Sony China Ref.: CNPA09032CN00
I Sa&ef : SP262367W
]en Ref.: IP092387 1ZX
lation of Application No. 20 1010002920.9
Communication System For Supporting Carrier Aggregation And
Method and Apparatus For Updating System Information
I
Thereof
Field
[Ol] The disclosure relates to the field of carrier aggregation supporting communications, and
particularly, to a communication system supporting carrier aggregation and- methods' and
apparatuses for updating the system informati~nth ereof. More particularly, the disclosure relates
to methods and apparatuses for providing and receiving system i-ation in a communication
system supporting carrier aggregation and communication system including such apparatuses.
Background
[02] Future LTE-A (Long Term Evolution-Advanced) system can support a transmission
bandwidth up to 1 OOMHz, while in LTE standard the largest supportable transmission bandwidth
is 20M.z. Therefore, it is desired to aggregate multiple component carriers to meet the higher
requirements for transmission bandwidth in LTE-A system. Carrier aggregation is a technique
proposed by 3GPP in which multiple component carriers are aggregated for transmission, in
order to support the ,higher requirements for transmission bandwidth in future mobile
I
communication system. The introduction of carrier aggregation brings about a new opportunity
and challenge in the development of communication technology.
Summary
[03] The following presents a simplified summary of the disclosure in order to provide a basic
unddrstanding of some aspects of the disclosure. This summary is not an exhaustive overview of;
the disclosure. It is not intended to identifj key or critical elements of the disclosure or to
delineate the scope of the disclosure. Its sole purpose is to present some concepts in a simplified
form as a prelude to the more detailed description that is discussed later.
[04] According to an aspect of the disclosure, a method of providing system information in a
communication system supporting carrier aggregation is provided, which includes: generating,
when there is a change in system information of the communication system, first information
which includes information indicating the change in system information; determining a first cell
*
of a user equipment involved in the change in system information, wherein the first cell is one of
Sony China Ref: CNPA09032CN00
I Sony Ref.: SP262367CNOO - . .
Ref.: IP092387 1ZX
lation of Application No. 2010 10002920.9 ,*
cells to which the user equipment is connected and corresponds to a component carrier which is
being used by the user equipment and is kept in connection with a base station of the
t ,
communication system; and transmiking the first information to the user equipment via the first
cell. 3
5 [05] According to another aspect of the disclosure, an apparatus of providing system
information in a communication system supporting carrier aggregation is provided, which
includes: an information generating device, configured to generate, when there is a change in
system information of the communication system, first information which includes information
indicating that there is a change in system information; a cell determining device, configured to
10 determine a first cell of a user equipment involved in the change .iks"$tem information, wherein
the first cell is one of cells to which the user equipment is connected and corresponds to a
component carrier which is being used by the user equipment and is kept in connection with a
base station of the communication system; and a transmitting device, configured to transmit the
first information to the user equipment via the first cell.
15 [06] According to another aspect of the disclosure, a method of receiving system information in
a communication system supporting carrier aggregation is provided, which includes: receiving
first information which includes information indicating that there is a change in system
I !
information of the communication system via a first cell corresponding to a component carrier
which is being used by a user equipment of the communication system and is kept in connection
1
20 with a base station of the communication system; and parsing the first information, to obtain the
L
information indicating that there is the change in system information.
1
[07] According to another aspect of the disclosure, an apparatus of receiving system
information in a communication system supporting carrier aggregation is provided, which
includes: a receiving device, configured to receive first information which includes information
4
25 indiqating that there is a change in system information of the communication system via a first
' I celI corresponding to a component carrier which is being used by the apparatus and is kept in
connection with a base station of the communication system; and a control device, configured to
parse the first information, to obtain the information indicating that there is the change in system
information.
30 [08] According to another aspect of the disclosure, a method of providing and receiving system
information in a communication system supporting carrier aggregation is provided, which
includes: generating, when there is a change in system information of the communication system,
first information which includes information indicating that there is the change in system
information; determining a first cell of a user equipment involved in the change in system
Sony China Ref.: CNPAO9032CN00
SP262367CNOO - .
en Ref.: IP0923871ZX . .1 of Application No. 201010002920.9
information, wherein the first cell is one of cells to which the user equipment is connected and
corresponds to a component carrier which is being used by the user equipment and is kept in
+
connection with a base station of the communication system; transmitting the first information to
the user equipment via the first cell; receiving by the user equipment the first information via the
first cell; and parsing by the user equipment the first information, to obtain the information
indicating that there is the change in system information.
[09] According to another aspect of the disclosure, a communication system is provided, which
supports carrier aggregation and includes a first apparatus of providing system information and a
second apparatus of receiving the system4 information. The first apparatus includes: an
information generating device, configured to generate, when is a change in system
information of the communication system, first information which comprises information
indicating that there is a change in system information; a cell determining device, configured to
determine a first cell of a user equipment involved in the change in system information, wherein
the first cell is one of cells to which the user equipment is connected and corresponds to a
component carrier which is being used by the user equipment and is kept in connection with a
base station of the communication system; and a transmitting device, configured to transmit the
first information to the user equipment via the first cell. The second apparatus includes: a
receiving device, configured to receive first information which includes infbrmation indicating
that there is a change in system information of the communication system via a first cell
a
corresponding to a component carrier which is being used by the apparatus and is kAPt in
connection with a base station of the communication system; and a control device, configured io
parse the first information, to obtain the information indicating that there is a change in system
information.
[lo] In addition, an embodiment of the invention provides computer program for realizing the
above method.
k
' \ [I 1 j Furthermore, an embodiment of the disclosure provides a computer program product in the
form of computer readable medium on which there are recorded computer program codes for the
above method.
Brief Description of -Drawings
[I21 The above and other objects, features and advantages of the embodiments of the disclosure
can be better understood with reference to the description given below in conjunction with the
accompanying drawings, throughout which identical or like components are denoted by identical
Sony China Ref.: CNPA09032CN00
I Sony Ref.: SP262367CN00 - 3.
en Ref.: IP0923871ZX
lation of Application No. 2010 10002920.9 .w 19
or like reference signs. In addition the components shown in the drawings are merely to illustrate
the principle of the disclosure. In the drawings:
!
[I31 Fig. 1 is a schematic diagram illustrating the structure of a communication system
\ -
supporting carrier aggregation;
I 5 [I41 Fig. 2 is a schematic flow chart illustrating a method of updating system information by
providing information to a user equipment under the carrier aggregation (CA) supporting
scenario according to an embodiment of the disclosure;
[15] Fig. 3 is a schematic diagram illustraljng special cells of some user equipment in the
communication system shown in Fig. 1; <.LS
10 [I61 Fig. 4 and Fig. 5 are schematic flow charts illustrating the processes of transmitting first
information to a user equipment via a first cell, respectively;
[17] Fig. 6 shows an example of a method of updating system information by receiving
information by a user equipment in the carrier aggregation supporting (CA-S) communication
system according to the embodiment shown in Fig. 2;
[18] Fig. 7 shows an example of a receiving process corresponding the transmitting process as
shown in Fig. 4;
I [19] Fig. 8 shows an example of a receiving process corresponding the transmitting process as
I shown in Fig. 5; I
[20] Fig. 9 is a schematic flow chart illustrating a method of notifying update of syst&
information in a CA-S communication system according to an embodiment of the disclosure; 1
[21] Fig. 10 is a schematic flow chart illustrating a method of receiving the notification
indicating that system information changes in a CA-S communication system according to an
embodiment of the disclosure;
>
' I
[22] Fig. 11 and Fig. 12 are schematic flow charts illustrating examples of transmitting
notification information to a UE via the first cell, respectively;
[23] Fig. 13 shows an example of a receiving process corresponding the transmitting process as
shown in Fig. 11 ;
[24] Fig. 14 shows an example of a receiving process corresponding the transmitting process as
shown in Fig. 12;
[25] Fig. 15 is a schematic flow chart illustrating a method of providing - updated system
information in a CA-S communication system according to an embodiment of the disclosure;
Sony China Ref.: CNPAO9032CN00
SP262367CN00 - , en Ref.: IP0923871ZX
ation of Application No. 201010002920.9
[26] Fig.. 16 is a schematic flow chart illustrating a method of receiving updated system
information in a CA-S communication system according to an embodiment of the disclosure;
I ~ [27] Fig. 17 is a schematic flow chart illustrating a method of receiving updated system I *
information according td another embodiment of the disclosure;
5 [28] Fig. 18 is a schematic flow chart illustrating a method of receiving updated system
inf;rmation according to yet another embodiment of the disclosure;
[29] Fig. 19 is a schematic diagram illustrating the process of notifying the change in system
information by using extended conventional signaling under a CA supporting scenario;
[30] Fig. 20 is a schematic diagram illustrating the process of Whiing the change in system
10 information by using a dedicated signaling under a CA supporting scenario;
[31] Fig. 21 is a schematic flow chart illustrating a method of providing updated system
information in a CA-S communication system according to an embodiment of the disclosure;
[32] Fig. 22 and Fig. 23 are schematic flow charts illustrating examples of transmitting first
information containing updated system information via the first cell to a user equipment,
15 respectively;
[33] Fig. 24 to Fig. 26 are schematic flow charts illustrating examples o{ receiving updated
system information by a user equipment according to embodiments of the disclosure,
respectively; r
I
[34] Fig. 27 is a schematic flow chart illustrating a method of providing system informatibn
20 when a component carrier is to be added according to an embodiment of the disclosure; I
[35] Fig. 28 is a schematic flow chart illustrating a method of receiving system information by
a user equipment corresponding to the providing method shown in Fig. 27;
[36], Fig. 29 is a schematic flow chart illustrating a method of providing system information
' ,
relkd to a carrier segment when the carrier segment is to be added for a currently used
25 component carrier according to another embodiment of the disclosure;
[37] Fig. 30 is a schematic flow chart illustrating a method of receiving system information
related to a carrier segment when the carrier segment is to be added for a currently used
component carrier,-corresponding to the providing method shown in Fig. 29;
[38] Fig. 31 is a schematic block diagram illustrating an apparatus of providing system
30 information in a CA-S communication system according to an embodiment of the disclosure;
[39] Fig. 32 is a schematic block diagram illustrating an apparatus of receiving system
Sony China Ref.: CNPA09032CN00
SP262367CNOO - ?.
en Ref.: IP0923871ZX
lation of Application No. 201010002920.9 . *
information in a CA-S communication system according to an embodiment of the disclosure;
[40] Fig. 33 is a schematic block diagram illustrating an apparatus of notifying update of
system information in a CA-S communication system according to an embodiment of the
\ -
disclosure;
[41] Fig. 34 is a schematic block diagram illustrating an apparatus of receiving the notification
of system information update in a CA-S communication system according to an embodiment of
the disclosure;
[42] Fig. 35 is a schematic block diagrav illustrating an apparatus of providing system
information when a component carrier is to be added a c c o r d i a o an embodiment of the
disclosure;
[43] Fig. 36 is a schematic block diagram illustrating an apparatus of receiving system
information when a component carrier is to be added according to an embodiment of the
disclosure;
[44] Fig. 37 is a schematic diagram illustrating a user equipment obtaining updated system
information when a component carrier is to be added under a CA supporting scenario; and
[45] Fig. 38 is a schematic block diagram illustrating the structure of a computer for realizing
8
embodiment or example of the disclosure.
Detailed Description b
[46] Some embodiments of the present disclosure will be described in conjunction with thk
accompanying drawings hereinafter, It should be noted that the elements and/or features shown
in a drawing or disclosed in an embodiments may be combined with the elements andlor features
shown in one or more other drawing or embodiments. It should be further noted that some details
>
regarding some components and/or processes irrelevant to the disclosure or well known in the art
are omitted for the sake of clarity and conciseness.
[47] Some embodiments of the disclosure provide methods and apparatus of updating system
information in a CA-S communication system as well as a communication system including the
above apparatus. -
[48] Fig. 1 shows an example of a CA-S communication system. As shown in Fig. 1, the
communication system includes a base station (e.g. e-NodeB) 101 and user equipments 102, 103,
and 104. In the example of Fig. 1, the component carriers supported by the communication
system include CC1, CC2 and CC3. The user equipment 102 can use the component carriers
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Sony China Ref.: CNPAO9032CN00
SP262367CNOO - 3.
en Ref.: IP0923871ZX
of Application No. 201010002920.9 ICCl
and OC2, the user equipment 103 supports the component carriers CC2 and CC3, and the
user equipment 104 supports the component carriers CC1, CC2 and CC3. That is, the user
equipments 102, 103 and 104 each are a carrier aggregation supporting (CA-S) user equipment.
As an example, the Eonimunication . system may further include a carrier aggregation
5 non-supporting (CA-NS) user equipment 105. As shown in Fig. 1, the user equipment 105 can
use only a component carrier, i.e. CCl. Among the component carriers supported by the
communication system, the component carrier CC1 is contiguous with the component carrier
CC2, while the component carrier CC3 is not contiguous with the component carriers CCl' and
CC2. The communication system as shown in Fig. 1 not only includes CA-S user equipments,
10 but also includes CA-NS user equipments. It should be noted thatAisis merely an example and
the disclosure should not be limited to such communication system. For example, the disclosure
may be applied to a communication system including only a base station and a CA-S user
equipment; a communication system including a base station, a relay station and a user
equipment or other CA-S communication system, the description of which is not detailed herein.
15 [49] It should be noted that the so called "User Equipment (UE)" or "Equipment" in the
disclosure may include but not limited to a mobile device used by a user to access a
communication network, such as a mobile phone (e.g. 102 and 103 shown in Fig. I), a personal
digital assistance or a portable personal computer, or the like. I I
[50] The system information of a communication system needs to be kept newest at all times.
I
20 When the system information changes, the main node (e.g. the base station) of the
b
communication system needs to notify the user equipments in some way. In a CA-S
communication system, a user equipment may communicate with the main node of tqe
communication system via multiple of component carriers. For example, the equipment, 104
shown in Fig. 1 may communicate with the base station via 3 component carriers CCl, CC2, and
25 CC3. Different components may have different coverage due to their different propagation
>
chracteristics. When a user equipment moves out of the coverage of a component carrier it
supported and just at this time the system information needs to be updated, if the updated
information is transmitted to this user equipment via the cell corresponding to this component
carrier, the user equipment can not receive the information. Thus, when the user equipment
30 moves back to the coverage of this component carrier, this component carrier will be unusable
due to the incorrect system information.
[51] Fig. 2 shows a flow chart of a method of updating system information by providing
information to a user equipment under the CA scenario according to an embodiment of the
disclosure.
- 7 -
Sony China Ref.: CNF'A09032CNOO
Ref.: SP262367CN00
len Ref.: IP092387 1ZX
lation of Application No. 201010002920.9
[52] As shown in Fig. 2, the method includes steps S202, S204 and S206.
[53] In step S202, 6hen the system information of the communication system changes, the
information for indicating the change of the system information is generated. In the following the
' .- information generated in this step is referred to as the first information for conciseness.
5 [54] The communication system herein is a CA-S communication system, such as the
communication system shown in Fig. 1. Whether the system information of the communication
system changes or not may be judged by the main node (For example, the base station) in the
communication system. For example, related information may be obtained from the
?
corresponding configuration file of the main node (the base station), to determine whether the
..c.s)r
lo system information changes.
[55] In step S204, the cell to be used for transmitting the first information to a user equipment
involved in the change of the system information is determined.
[56] As described above, in a CA-S communication system, a user equipment may
communicate with the main node via a plurality of component carriers. Each of the component
15 carriers correspond to a cell. Among the cells to which each user equipment is connected, there
exists a special cell which may be used to provide security input and non access stratum WAS)
mobility information, etc. The special cell corresponds to a component caarier which is being
used by the user equipment for keeping connection with the main node (e.g. the base station) in
#
the communication system. As an example, only one special cell can be configured for each user
20 equipment. In other words, the following definition may be made: each user equipment'is
connected to one special cell which corresponds to a component carrier keeping connection wi@
the base station, while other component carriers supported by this user equipment can be used as
the uplink andlor downlink resource; of this user equipment. In an example, the dells
corresponding to these other component carriers are also called as serving cells.
25 [573'. Fig. 3 shows the special cells of some user equipments in the communication system,
shown in Fig. 1. As shown in Fig. 3, the user equipment 102 (UE 102) supports component
carriers CCl and CC2, wherein the cell corresponding to CCl is the special cell of the user
equipment 102. The user equipment 103.(UE 103) supports component carriers CC2 and CC3,
wherein the cell corresponding to C& is the special cell of the user equipment 103. The user
30 equipment 104 (UE 104) supports component carriers CC1, CC2 and CC3, wherein the cell
corresponding to CC3 is the special cell of the user equipment 104.
[58] When there is a change in the system information, the base station may judge to which
user equipment(s) (i.e. the user equipment(s) affected by the change) the change should be
Sony China Ref.: CNPA09032CN00
r Sony Ref.: SP262367CN00 -- i..
en Ref.: IP0923871ZX .
slation of Application No. 201010002920.9
notified based on corresponding configuration files, determines the special cell of each of the
user equipment(s) as 'the cell for transmitting the first information to the each of the user
1
\ -
[59] As an example, the base station may sel,ect, among one or more cells to which a user
5 equipment is connected, one cell as the special cell of this user equipment. Particularly, the base
station may select the special cell of a user equipment according to the corresponding
configuration file or according to the information fed back by the user equipment (e.g. the
channel quality, the signal strength, and the location of the user equipment, etc), based on a
criterion (e.g. this special cell always keeps cbnnection to the base station). For example, before
lo transmitting the first information to a user equipment, the base sti=may select the special cell
of a user equipment and notify the result of selection to the user equipment. For another example,
the base station may perform the selecting step at a regular interval or as required, for example,
when the user equipment moves to the edge of the coverage of a cell or moves out of the
coverage of a cell, and may noti@ the result of selection to the user equipment and stores the
15 result of the corresponding configuration file of the base station. In this way, when the base
station needs to determine the special cell of the user equipment, it may query the corresponding
configuration file.
t
[60] As another example, the special cell may be selected y the user equipment and then notified
I to the base station. For example, the user equipment may determine the connection states of the
1
20 cells supported by the user equipment based on its own configuration and select, among the cells
b
that are kept in connection with the base station, one cell as the special cell for transmitting
system information. For example, the user equipment may reconfigure or select its special cell at b
regular interval, or based on its mobility conditions (e.g. when it moves to the edge, or moves out,
of a cell) or other information (e.g. the channel quality, the signal strength, etc) and transmit the
25 information of the special cell to the base station. The base station may stores the information In
>
corresponding configuration file. Thus, when the base station needs to determine the special' cellof the user equipment, it may query the corresponding configuration file. Alternatively, when the
base station needs to determine the special cell of the user equipment, the base station may
transmit to the user equipment a request instructing the user equipment to feed back the
30 information of the special cell of the user equipment.
[61] As described above, the special cell determined in step S204 is one of the cells to which
the user equipment is connected, and corresponds to a component carrier which is being used by
the user equipment and is kept in connection with the main node of the communication system.
In the following, the special cell is also called as the first cell.
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Sony China Ref.: (3NPA09032CN00 , Sony Ref.: SP262367CN00
en Ref: IP0923871ZX
lation of Application a&' No. 201010002920.9
[62] Then in step S206, the first information is sent to the user equipment via the first cell.
[63] In the CA-S cofismunication system, the first cell is always kept in connection with the
main node (e.g. the base station). Thus, by using the above method, the case that the user
equipment can not receive the updated system jnformation can be avoided, so that the system
5 information can be updated or provided in time. In addition, the base station needs not to
I transmit the system information or notify the update of the system information via each of the
I cells supported by the user equipment, thereby decreasing the signaling load of the whole
system.
4
[64] Fig. 4 and Fig. 5 each show an example of the process of transmitting the first information
-e
10 to the user equipment via the first cell.
[65] In the example of Fig. 4, the process of transmitting the first information to the user
equipment via the first cell may include sub-steps S406-1 and S406-2. In sub-step S406-1, the
first information generated in the preceding step is encapsulated in a dedicated signaling (also
referred to as the first dedicated signaling). Then in sub-step S406-2, the first dedicated signaling
15 is sent to the user equipment via the first cell. In this example, the signaling generated in sub-step
S406-1 is a dedicated signaling, thus in sub-step S406-2 this dedicated signaling is transmitted
via the dedicated channel of the first cell.
8
[66] In the disclosure, transmitting a dedicated signaling via a cell corresponding to a
#
component carrier means that the dedicated signaling is transmitted via the dedicated chanhel of
I 20 the cell, the description of which is not repeated hereinafter. The dedicated channel may be' a
1 Dedicated Control Channel (DCCH), such as the DCCH defined in LTE standard (e.g. ETSI T$
I . [67] When a communication system includes many CA-S user equipments and the number of
configured component carriers is relatively large, using dedicated signaling to transmit the first
25 infoqhation to the user equiprnents (i.e. transmitting the first information via the dedicated:
channels of the first cells) will increase the signaling load of the system significantly. In such a
case, the example of Fig. 5 may be used. As shown in Fig. 5, the process of transmitting the first
information to the user equipment via the fxst cell may include sub-steps S506-1 and S506-2. In
sub-step S506-1, the first information generated in the preceding step is encapsulated in a
30 broadcast signaling iabo called as the first broadcast signaling). Then in sub-step S506-2, the first
broadcast signaling is sent to user equipment via the broadcast channel of the first cell. The
broadcast channel may be a Broadcast Control Channel (BCCH), such as the BCCH defined in
LTE standard (e.g. ETSI TS 136 331 V8.5.0). Compared with the dedicated signaling in the
Sonv China Ref.: CNPA09032CNOO
I SOG Ref.: SP262367CN00
Ref.: IP092387 1ZX
lation ofApplication No. 201010002920.9
example of#Fig. 4, using the broadcast signaling of Fig. 5 can decrease the signaling load of the
system effectively.
i, .
[68] The embodiment and examples shown in Fig. 2, Fig. 4 and Fig. 5 illustrate examples of
3 -
the processes of transmitting information from a main node (e.g. the base station) of the
5 communication system to a user equipment. Fig. 6 to Fig. 8 respectively show the corresponding
process of receiving the information by a user equipment.
[69] Particularly, Fig. 6 shows an example of a method of receiving information by a .user
equipment so as to update the system information in the CA-S communication system according
t
to the embodiment of Fig. 2.
-2-G
[70] As shown in Fig. 6, the method may include steps S607 and S609.
[71] In step S607, the user equipment receives the first information transmitted by the base
station via the first cell, the first information includes information indicating that the system
information changes. In other words, the user equipment receives the first information by
listening to the component carrier (also called as the first component carrier) corresponding to
the first cell. The first cell has been described above, the description of which is not repeated.
[72] In step S609, the user equipment parses the received first information to obtain the
information indicating that the system information changes, so as to perfo#n the update of the
system information. ,
l
[73] By using the above receiving method, the user equipment may get known of the change of
the system information in time. Since the user equipment keeps being connected with the base
station via the fust cell (i.e. the special cell), the case that the user equipment can not receive the
updated system information can be avoided. In addition, by using the first cell, the user
equipment needs not to listen to all the cells corresponding to its supportable component c&ers,
thereby reducing the power consumption of the user equipment significantly and lengthening the
lift lime of the battery of the user equipment. ' i
[74] The transmitting process shown in Fig. 2 and the receiving process shown in Fig. 6
constitute an example of updating system information in the CA-S communication system.
[75] Fig. 7 shows an example of reieiving process corresponding to the transmitting process
shown in Fig. 4. A-S shown in Fig. 4, the first information is encapsulated in a dedicated signaling
(i.e. the first dedicated signaling) and is sent to the user equipment via the dedicated channel of
the fust cell. Thus in step S707, the user equipment receives the first dedicated signaling which
Contains the first information via the first cell thereof. In other words, the user equipment listens
Sony China Ref.: CNPA09032CN00
SP262367CN00 - . .
en Ref.: IP0923871ZX
slation of Application No. 201010002920.9
to the dedicated channel of its first cell to receive the first dedicated signaling. Similar to step
S609, in step S709, the user equipment parses the first dedicated signaling, to obtain the
1
information indicating that the system information changes.
\ -
[76] Fig. 8 shows an example of receiving process corresponding to the transmitting process
5 shown in Fig. 5. As shown in Fig. 5, the first information is encapsulated in the broadcast
signaling (i.e. the first broadcast signaling) and is sent to the user equipment via the broadcast
channel of the first cell. Thus in step S807, the user equipment receives the first broadcast
signaling containing the first information via the broadcast channel of the first cell. In other
words, the user equipment listens to the brokdcast channel of the first cell to receive the first
10 broadcast signaling. Step S809 is similar to step S609 or S709, tTiC&scription of which is not
repeated here.
[77] The transmitting process shown in Fig. 4 and the receiving process shown in Fig. 7, the
transmitting process shown in Fig. 5 and the receiving process shown in Fig. 8 respectively
constitute examples of updating the system information. Compared with the method of using
15 dedicated signaling as shown in Fig. 4 or Fig. 7, the examples shown in Fig. 5 and Fig. 8 utilize
the broadcast signaling, by which the signaling load of the system may be decreased.
[78] In addition, by using the first cell (the dedicated channel or the broadc st channel a thereof) ,
the user equipment needs not to listen to all the cells corresponding to all its supportable
component carriers, thefeby reducing the power consumption of the user equipment signifipantly
20 and lengthening the lift time of the battery of the user equipment. L
[79] As an embodiment, the first information may contain only the information indicating that
the system information changes, and in this case, the base station at the network side will
transmit the updated system information by subsequent transmitting processes and the user
equipment may receive the updated system information by subsequent receiving processes,
25 whiuh will be described below.
' i
[SO] As another embodiment, the first information may fwther include the updated system
information. That is, at the network side the base station transmit the updated system
information to the user equipment directly via the first cell; and the user equipment may obtain
the updated system information by the first information, which will be described below.
30 [Sl] As an example, the first information may further include the information (also referred to
as the third information) indicating whether the change of the system information affects the CA
transmission. For example, the third information may indicate the system information of which
*
part of the system changes and the user equipment may determine whether the change affects the
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Sony China Ref.: CNPA09032CN00
SP262367CN00
en Ref.: IP092387 1ZX
of Application No. 2010 10002920.9
CA transmission based on this information.
[82] Fig. 9 shows an example of a method of notifying the update of system information in a
CA-S communication system according to an embodiment of the disclosure. In the method, the
network side of the communication system (e.g. the base station) notifies the user equipment of
the change of the system information via the first cell. The first cell herein is the same as
described above.
[83] As shown in Fig. 9, the method includeq steps S902, S904 and S906.
[84] In step S906, when the system information of the c o r n m ~ i o nsy stem changes, the
notification information indicating that the system information changes is generated. The
notification information may include only the information indicating that the system information
changes. As described above, the notification information may be regarded as an example of the
first information.
[85] Similar to the above embodiments, the communication system herein is a CA-S
communication system, such as the communication system shown in Fig. 1. Whether the system
information of the communication system changes or not may be judged by the main node (e.g.
the base station) in the communication system. For example, related iAformation may be
obtained from the corrgsponding configuration file of the main node (the base station), to
1 .
determine whether the system information changes.
b
[86] In step S904, the cell to be used for transmitting the notification information to a user
1 equipment which is involved in the change of the system information is determined.
[87] Particularly, the base station may judge to which user equiiment(s) (i.e. the Pser
equipment(s) involved in the change) the change should be notified based on corresponding
configuration files, determines the special cell of each of the user equipment(s) as the cell for
>
transmitting the first information to the each of the user equipment(s). The special cell of a user'
equipment may be determined by using the above described method, the description of which is
not repeated here
[88] Similar to the above embodiments, the cell determined in step 904 is one of the cells to
which the user equipment is connected and corresponds to the component carrier which is being
used by the user equipment and keeps in connection with the main node of the communication
system. This cell is also called as the first cell or the special cell.
-.
[89] Then in step S906, the notification information is sent to the user equipment via the first
Sony China Ref.: CNPA09032CN00
S ny Ref.: SP262367CN00
alen Ref.: IP092387 1ZX
Islation of Application No. 2010 10002920.9 e
cell.
[go] Since the first ckll always keeps in connection with the base station, the case that the user
equipment can not receive the notification information can be avoided by using the above
'> -
method. In this way the change of the system iniormation can be notified to the user equipment
in time. In addition, the base station needs not to send the notification information to the user
equipment via each of a plurality of cells, by which the signaling load of the system may be
reduced.
[91] Fig. 10 shows an example of a method of receiving notification that the system
?
information changes in a CA-S communication system according to an embodiment of the
disclosure. In the method, the user equipment of the communication system receives the
notification information indicating that the system information changes from the base station by
listening to the first cell. The first cell herein is the same as described above.
[92] As shown in Fig. 10, the method includes steps S 1007 and S 1009.
[93] In step S1007, the user equipment receives the notification information indicating that the
system information changes which is transmitted from the base station via the first cell. In other
words, the user equipment listens to the component carrier (also called as the first component
carrier) corresponding to the first cell to receive the notification information. I
[94] In step S1009, the user equipment parses the received notification information, so as to get
I
aware that the system information changes.
b
[95] By using the above method, the user equipment can know the change of the system
I
information in time, so as to update the system information subsequently. Since the user
equipment keeps in connection with the base station via the first cell (i.e. the special cell),. the
case that it can not get the notification of the change can be avoided. In addition, by using the
first cell, the user equipment needs not to listen to all the cells corresponding to its supportable
component carriers, by which the power consumption of the user equipment can be redbced
significantly and the lift time of the battery of the user equipment can be lengthened.
[96] The transmitting process shown in Fig. 9 and the receiving process shown in Fig. 10
constitute an example of updating the system information in the CA-S communication system.
[97] Fig. 11 and ~ i12 ~resp.ecti vely show examples of transmitting notification information to
the user equipment via the first cell.
-[9 8] In the example of Fig. 1I , the step of transmitting the notification information via the first
cell to the user equipment may include sub-steps S 11 06- 1 and S 1 106-2. In sub-step S 1 106- 1, the
Sony China Ref.: CNPA09032CN00
r So y Ref.: SP262367CN00 k > - ..
U ' en Ref.: IP0923871ZX
T lation of ApplicationNo. 201010002920.9 \-
notification information generated in the preceding step is encapsulated in a dedicated signaling
(also called as the first dedicated signaling). Then in sub-step S1106-2, the first dedicated
i >
signaling is sent to the user equipment via the first cell. The signaling generated in sub- step
S 11 06-1 is a dedicated s'lgnaling, and in,sub-step S 11 06-2 the dedicated signaling is sent via the
5 dedicated channel of the first cell.
[99] When a communication system includes many CA-S user equipments and the number of
configured component carriers is relatively large, using dedicated signaling to transmit the first
information to the user equipments (i.e. transmitting the first information via the dedicated
channels of the first cells) will increase the siinaling load of the system significantly. In such a
10 case, the example of Fig. 12 may be used. As shown in Fig. 12, dE$rocess of transmitting the
notification information to the user equipment via the first cell may include sub-steps S1206-1 and
S 1206-2. In sub-step S 1206-1, the notification information generated in the preceding step is
encapsulated in a broadcast signaling (also called as the first broadcast signaling). Then in
sub-step S1206-2, the first broadcast signaling is sent to user equipment via the broadcast channel
1s of the first cell. Compared with the dedicated signaling in the example of Fig. 11, using the
broadcast signaling of Fig. 12 can decrease the signaling load of the system effectively.
[loo] Fig. 13 shows an example of a receiving process corresponding to the transmitting process
I I
shown in Fig. 11. As shown in Fig. 11, the first information is encapsulated in a dedicated
signaling (the first dediaated signaling) and is sent to the user equipment via the first cell. Thus
I
20 in step S1307, the user equipment receives the first dedicated signaling containing the
L
notification information via the component carrier (also called as the first component carrier)
corresponding to its first cell. In other words, the user equipment listens to the dedicated channdl
of the first cell to receive the first dedicated signaling. Similar to step S 1009, in step S 1309. the
user equipment parses the first dedicated signaling to obtain the notification information
25 indicating that the system information changes, so as to get aware of the change of the system
k
inforination. I
[loll Fig. 14 shows an example of receiving process corresponding to the transmitting process
shown in Fig. 12. As shown in Fig. 12, the notification information is encapsulated in the
broadcast signaling (the first broadcast .signaling) and is sent to the user equipment via the
30 broadcast channel-of the first cell. Thus in step S1407, the user equipment receives the first
broadcast signaling containing the notification information via the broadcast channel of the first
cell. In other words, the user equipment listens to the broadcast channel of the first cell to receive
b e first dedicated signaling. Step S1409 is similar to step S1009 or S1309, the description of
which is not repeated here.
Sony China Ref.: CNPAO9032CN00
SP262367CN00 - * -
en Ref.: IP092387 1ZX
lation of Application No. 20 10 10002920.9 k-
[lo21 The .transmitting process shown in Fig. 11 and the receiving process shown in Fig. 13, the
transmitting process shown in Fig. 12 and the receiving process shown in Fig. 14 respectively
constitute examples of updating the system information. Compared with the method of using
dedicated signaling as shown in Fig. 11 or Fig. 13, the examples shown in Fig. 12 and Fig. 14
5 utilize the broadcast signaling, by which the signaling load of the system may be decreased.
[lo31 In addition, by using the first cell (the dedicated channel or the broadcast channel) , the
user equipment needs not to listen to all the cells corresponding to its supportable comp,onent
carriers, by which the power consumption of the user equipment can be reduced and the life time
of the battery of the user equipment can be len'gthened.
~,-%
10 [lo41 It should be noted, the dedicated signaling and the broadcast signaling in this disclosure
each may be a newly defined signaling, or may be a signaling obtained by extending a known
signaling. The disclosure is not limited to any of the examples.
[I051 Fig. 15 shows a method of providing the updated system information in the CA-S
communication system according to an embodiment of the disclosure. The method shown in Fig.
15 15 is based on the example shown in Fig. 9, or Fig. 11, or Fig. 12. The difference lies in that, the
method of Fig. 15 further includes a process of transmitting the updated system information.
[lo61 As shown in Fig. 15, the method includes steps S 1502, S1504, S1506, $15 12 and S 15 14.
[lo71 Steps S1502, S1504 and S1506 may be similar to the corresponding steps shown in Fig. 9, '
I
Fig. 11 or Fig. 12, the description of which is not repeated here.
b
20 [lo81 In step S15 12, the network side (e.g. the base station) of the communication system
1
encapsulated the updated system information in a broadcast signaling (also called as the second
broadcast signaling). Then in step S1524, the second broadcast signaling is transmitted to the
user equipment via the cell (also called as the second cell) corresponding to the component
carrier involved in the change of the system information.
' 1
25 [I091 Fig. 16 shows a method of receiving the updated system information in the CA-S
communication system according to an embodiment of the disclosure. The method shown in Fig.
16 is based on the method shown in Fig. 10, Fig. 13 or Fig. 14. The difference lies in that, the
method shown in Fig. 16 further includes a process of receiving the updated system information.
[I101 As shown i n ~ i1~6, .th e method includes steps S1607, S1609 and S1611.
30 [I1 11 Step S 1607 and S 1609 are similar to the corresponding steps shown in Fig. 10, Fig. 13 or
F-i g. 14, the description of which is not repeated here.
[I121 As shown in Fig. 15, the network side (e.g. the base station) of the communication system
Sony China Ref.: CNPA09032CN00
SP262367CNOO
en Ref.: IP0923871ZX
lation of Application No. 201010002920.9
encapsulated the updated system information in the second broadcast signaling and transmits the
he second broadcast si naling via the broadcast channel of the second cell. ? Accordingly, since
the user equipment does not know on which cell's broadcast channel the base station will
transmit the updated sy'stem information, thus when the user equipment gets aware that the
5 system information changes, it starts to perform the process shown in step S1611. That is, the
user equipment starts listening to the broadcast channels of all the cells corresponding to its
supportable component carriers, in order to receive the second broadcast signaling. After
receiving the second broadcast signaling, the user equipment parses it to obtain the updated
system information. t
lo [I131 The transmitting process shown in Fig. 15 and the r e c e i ~ ~ ~ r o csehosws n in Fig. 16
constitute an example of updating the system information in the CA-S communication system.
[I 141 In the above embodiments, the network side (the base station) of the communication sends
the updated system information via the second cell corresponding to an involved component
carrier, and the base station needs to listens to all the cells corresponding to all of its supportable
15 component carriers. With the method, no additional information is needed to be transmitted
during the process of providing the notification information (e.g. steps S1502-S1506). Thus the
process of notifying the change of the system information can be simplified.
8
[I151 Fig. 17 shows a method of receiving the updated system information in the CA-S
communication system According to another embodiment of the disclosure. In the embodiment,
20 the notification information may further include information (also called as the seco~d
information) for identifying a component carrier involved in the change of the system
information. As shown in Fig. 17, after receives the notification information including the second
information and the information indicating that the system information changes in step S1707,
the user equipment parses the notification information to obtain the second information in step
25 S17q9. Then in step S1711, the user equipment listens to the broadcast channel of the cell
,
co&esponding to the component carrier involved in the change of the system information based'
on the second information, to obtain the updated system information. In the embodiment, the
user equipment needs not to listen to the broadcast channels of all the cells corresponding to all
of its supportable component carriers, Compared with the method shown in Fig. 16, with the
30 method of Fig. 17, the power consumption of the user equipment can be reduced significantly
and the life time of the battery of the user equipment can be lengthened.
[116] Fig. 18 shows a method of receiving the updated system information according to another
embodiment of the disclosure. In the embodiment, the notification information may further
include the information (also called as the third information) indicating whether the change of
-17-
Sony China Ref.: CNPA09032CN00
Ref.: SP262367CN00 -
Ref.: IP0923871ZX
lation of Application No. 201010002920.9
the system information affects the CA transmission. For example, the third information may
indicate that change of the system information occurs in which part(s) of the communication
1 ,
system and the user equipment can judge whether the change affects its CA transmission based
on this information. Part'icularly, when the user equipment receives the notification information
containing the third information and the information indicating that the system information
changes in step S1807, it may parses the notification information to obtain the third information
in step 1809. Then in step S1810, the user equipment decides whether to receive the updated
system,information based on the third information. For example, if the user equipment supports
CA and the third information indicates that the change of the system information does not affect
the CA transmission, the user equipment may choose not t o a ~ i v eth e updated system
information. On the other hand, if the user equipment does not support CA and the third
information indicates that the change of the system information affects the CA transmission, the
user equipment, the user equipment may also choose not to receive the updated system
information. If decides to receive the updated system information, the user equipment listens to
the corresponding channel to receive the updated system information in step S 18 1 1. Step S 18 1 1
may be similar to step S16ll or step S 17 11, the description of which is not repeated here.
[I171 In the transmitting and receiving processes shown in Fig. 15 and Fig. 16, the updated
system information is encapsulated in the second broadcast signaling and is transmitted and
received via the broadcast channel of the second cell. In another embodiment, the updated
system information may be encapsulated in a dedicated signaling (also called as the' third
dedicated signaling) and is transmitted and received via the dedicated channel of the second cell.
In this embodiment, the notification information further contains the information (the second
information) for identifying a component carrier involved in the change -of the system
information. When the user equipment receives the notification information including the second
information, it parses the notification information to obtain the second information and based o,n
the Becond information, it listens to the dedicated channel of the cell corresponding to, the,
component carrier involved in the change, so as to obtain the updated system information. In the
embodiment, the user equipment needs not to .listen to the broadcast channels of all the cells
corresponding to all of its supportable component carriers. Thus, the power consumption of the
user equipment can be reduced signific'antly and the life time of the battery of the user equipment
can be lengthened.-
[I181 As described above, the broadcast signaling and the dedicated signaling each may be a
n-e wly defined signaling, or may be an extension to a known signaling.
[I191 As an example, the first broadcast signaling may be an extension to the Paging message in
Sony China Ref.: CNPAO9032CN00
&Ref.: SP262367CN00 - c.
alen Ref: IP0923871ZX
lation of Application No. 20 10 10002920.9
LTE Release 8, or may be an extension to the system information block (SIBl) message. For
example, the second information and/or the third information can be inserted in the Paging or
SIBl message. Particularly, two indicators may be inserted in the Paging or SIBl message,
including a first indicator-(e.g. SystemInfoUpdateCCIndicator) and a second indicator (e.g.
CriticalSystemInfoIndicator). The first indicator may contain the second information, i.e. to
identify the system information of which component carrier changes. The second indicator
contains the third information, i.e. to identify whether the change of the system information
affects the CA transmission (e.g. it may indicate which part's system information changes,' and
the user equipment may determine whether its CA transmission is affected based on this
information). Fig. 19 is a schematic diagram showing the notifid* of the change of system
information by using the Paging or SIBl message as the first broadcast signaling under a CA
scenario. As shown in Fig. 19, the extended Paging or SIBl message is transmitted via the
broadcast channel of the first cell (corresponding to CCl) of the user equipment 102. Then, the
updated system information is transmitted via the cell corresponding to CC2. Of course, this is
only an example of using the first broadcast signaling, and the disclosure should not be regarded
as being limited to this. As described above, the first broadcast signaling may be a newly defined
signaling.
[I201 Similar to the first broadcast signaling, the first dedicated signalink may be a newly
defined signaling, or may be an extension to a known signaling. Also similar to the first
broadcast signaling, the first dedicated signaling may contain the second information and/or the
third information. For example, the first dedicated signaling may contain two indicators, such hs
the first indicator (e.g. SystemInfoUpdateCCIndicator) and the second indicator (e.g.
CriticalSysternInfoIndicator). The first indicator may contain the second information, i.e. to
identify the system information of which component carrier changes. The second indicator
contains the third information, i.e. to identify whether the change of the system information
affedis the CA transmission (e.g. the information may indicate which part's system information,
changes, and the user equipment may determine whether its CA transmission is affected based on
this information). Fig. 20 is a schematic diagram showing the notification of the change of
system information by using the first dedicated signaling under a CA scenario. As shown in Fig.
20, the first dedicated signaling (e.g. tfie SystemInfoUpdate message as shown) is transmitted via
the dedicated channel of the first cell (corresponding to CC1) of the user equipment 102. Then,
the updated system information is transmitted via the cell corresponding to CC2.
[I211 Fig. 21 shows a method of providing the updated system information in the CA-S
*
communication system according to an embodiment of the disclosure. In the method of Fig. 21,
Sony China Ref: CNPA09032CNOO
I Sony Ref.: SP262367CN00 - .
'talen Ref.: IP092387 1ZX
Iation of Application No. 2010 10002920.9 *
the network side (the base station) of the communication system transmits the updated system
information to the user equipment via the first cell (the special cell) of the user equipment.
I
[I221 As shown in Fig. 2 1, the method includes steps S2 102, S2 104 and S2 106.
> -
[I231 In step S2102, when the system informatjion of the communication system changes, the
5 first information is generated. Different from the embodiment shown in Fig. 2, in this
embodiment the first information further includes the updated system information, in addition to
I the information indicating that the system information changes.
I [I241 Similar to the above embodiments, whqher the system information of the communication
system changes or not may be judged by the main node (.eig,Jhe base station) of the
10 communication system. For example, related information may be obtained from the
corresponding configuration file of the main node (the base station), to determine whether the
system information changes. The updated system information may also be obtained from the
corresponding configuration file of the base station.
[I251 In step S2104, the cell, i.e. the first cell, to be used to transmit the first information to the
15 user equipment involved in the change of the system information is determined. The first cell
here is the same as described above, the description of which is not repeated.
[I261 When there is a change in the system information, the base station may judge to which
user equipment(s) (i.e. ,the user equipment(s) affected by the change) the change should be
1
notified based on corresponding configuration files, determines the special cell of each of the
b
20 user equipment(s) as the cell for transmitting the first information to the each of the user
equipment(s). The special cell of a user equipment can be determined by using the method as
described above, the description of which is not repeated here.
11271 Then in step S2106, the first information is sent to the user equipment via the first cell.
[128], Since the first cell is always kept in connection with the main node (e.g. the base station).
' I
25 T~USby, using the above method, the case that the user equipment can not receive the updated
system information can be avoided.
[I291 Fig. 22 and Fig. 23 respectively show the processes of transmitting the first information
containing the updated system information to the user equipment via the first cell.
[I301 In the example of Fig. 22, the step of transmitting the frst information to the user
30 equipment via the first cell may include sub-steps S2206-1 and S2206-2. In sub-step S2206-1,
the first information containing the updated system information generated in step S2102 is
encapsulated in a dedicated signaling (also called as the first dedicated signaling). Then in
Sony China Ref.: CNPAO9032CN00
r Sony Ref: SP262367CN00 - . .
talen Ref.: PO92387 1ZX
lation ofApplication No. 201010002920.9
*
sub-step S2206-2, the first dedicated signaling is sent to the user equipment via the first cell.
That is, the first dedicated signaling is sent via the dedicated channel of the first cell.
1
[131] In the example of Fig. 23, the step of transmitting the first information to the user
> -
equipment via the first cell may include sub-steps S2306-1 and S2306-2. In sub-step S2306-1,
5 the first information containing the updated system information generated in step S2102 is
encapsulated in a broadcast signaling (also called as the first broadcast signaling). Then in
sub-step S2306-2, the first broadcast signaling is sent to the user equipment via the broadcast
channel of the first cell. Compared with the method of using the dedicated signaling shown in
Fig. 22, using the broadcast signaling as shokn in Fig. 23 can effectively reduce the signaling
10 load of the system. .-
[I321 Fig. 24 to Fig. 26 show examples of receiving the updated system information by the user
equipment.
[I331 Fig. 24 shows a method of receiving the updated system information by the user
equipment in the CA-S communication system based on the embodiment of Fig. 21.
15 [I341 As shown in Fig. 24, the method includes steps S2407 and S2409.
I [I351 In step S2407, the user equipment receives the first information the transmitted by the base
I station via the first cell. The first information contains information indicat!ng that the system
information changes and the updated system information. In other words, the user equipment
listens to the component carrier (also called as the first component carrier) corresponding io the
b
20 first cell to receive the first information.
[I361 In step S2409, the user equipment pareses the first information to get aware of the change
1 of the system information and to obtain the updated system information.
[I371 By using the method, the user equipment may get the updated system information in time. ,
Since the user equipment keeps being connected with the base station via the first cell (i.e. the
' 25 special cell), the case that the user equipment can not receive the updated system information can
be avoided. In addition, by using the first cell, the user equipment needs not to listen to all the
I cells corresponding to its supportable component carriers, thereby reducing the power
I consumption of the user equipment significantly and lengthening the lift time of the battery of
the user equipment.
30 [I381 The transmitting process of Fig. 21 and the receiving process of Fig. 24 constitute an
example of updating the system information in the CA-S communication system.
d
[l39] Fig. 25 shows a receiving process corresponding to the transmitting process of Fig. 22. As
Sony China Ref.: CNPA09032CN00
I Sony Ref.: SP262367CN00 - :.
Ref.: IP092387 1ZX
lation ofApplication No. 201010002920.9 i*
shown in ,Fig. 22, the first information is encapsulated in a dedicated signaling (the first
dedicated signaling) and is sent to the user equipment via the dedicated channel of the first cell.
I Thus in step S2507, the user equipment receives the first dedicated signaling containing the first
information via its first Cell: In other words, the user equipment listens to the dedicated channel
5 of the first cell to receive the first dedicated signaling. Similar to step S2409, in step S2509 the
user equipment pareses the first dedicated signaling to obtain the updated system information.
[I401 Fig. 26 shows a receiving process corresponding to the transmitting process of Fig. 23 As
shown in Fig. 23, the first information is encapsulated in a broadcast signaling (the first
broadcast signaling) and is sent to the user eqhipment via the broadcast channel of the first cell.
10 Thus in step S2607, the user equipment receives the first broadcas5Sfgnaling containing the first
information via the broadcast channel of the first cell. In other words, the user equipment listens
to the broadcast channel of the first cell to receive the first broadcast signaling. Step S2609 is
similar to step S2409 or S2509, the description of which is not repeated here.
[141] The transmitting process of Fig. 22 and the receiving process of Fig. 25, the transmitting
15 process of Fig. 23 and the receiving process of Fig. 26 respectively constitute examples of
updating the system information of the disclosure. Compared with the methods of using the
dedicated signaling in Fig. 22 and Fig. 25, using the broadcast signaling as shown in Fig. 23 and
t I
Fig. 26 can effectively reduce the signaling load of the system.
[I421 In addition, by ding the first cell (the dedicated channel or the broadcast channel) , the
20 user equipment needs not to listen to all the cells corresponding to its supportable component
carriers, thereby reducing the power consumption of the user equipment significantly and
lengthening the lift time of the battery of the user equipment.
[I431 In addition, the change of system'information described in the disclosure may includeaany
change in the system information resulted from the change of the system configuration and
25 architecture. For example, the change may include but not limited to: adding a carrier segment to
an activated component carrier, adding an extension carrier, activating (adding) a new
component carrier, and the like. Thus, the updated system information may include any system
information related to such changes. For example, when adding a carrier segment to an activated
component carrier, the updated system information may include configuration information
30 related to the cari-ier segment; when adding an extension carrier for a user equipment, the
updated system information may include configuration information related to the extension
carrier; when adding an extension carrier, activating (adding) a new component carrier, the
npdated system information may include configuration information related to the new
component carrier, the description of which is not detailed herein.
-22-
Sonv China Ref.: CNPA09032CN00
I son? Ref.: SP262367CN00
1W;: len Ref.: IP0923871ZX
lation of Application No. 201010002920.9
[I441 Fig. 27 shows armethod of providing the system information in the case a component
carrier is to be added according to an embodiment of the disclosure.
\ -
[145] As shown in Fig. 27, the method includes steps S2702, S2704, S2706 and S2708.
I 5 [146] In step S2702, when a component carrier is to be added, the first information is generated.
The first information may include the information indicating that a component carrier is to be
added and the system information related to the component carrier.
[I471 In step S2704, the cell (the first cell) to be used to transmit the first information to the user
equipment for which component carrier is to be added is deterrrii.w& The first cell herein has
lo been described above and will not be repeated here.
[I481 Particularly, the base station determines the special cell of the user equipment based on
corresponding configuration file, as the cell for transmitting the first information to the user
equipment. The special cell of the user equipment can be determined by using the method
described above, the description of which is not repeated here.
15 [I491 In step S2706, the first information is encapsulated in a dedicated signaling (also called as
the second dedicated signaling). Then in step S2708, the second dedicated si aling is sent Y' to the
user equipment via the first cell. That is, the second dedicated signaling is transmitted via the
dedicated channel of the'first cell. I
[150] Since the first cell is always kept in connection with the main node (e.g. the base station).
20 Thus, by using the above method, the system information related to the component carrier to be
I added can be sent to the user equipment in time. And the case that the user equipment can not I receive the updated system information Can be avoided.
[I511 Fig. 28 shows an example of receiving the system information corresponding to the
I trandmitting process of Fig. 27. , I
I 25 [I521 As shown in Fig. 28, the method includes steps S2807, S2809 and S2811.
[I531 In step S2807, the user equipment receives the second dedicated signaling via the
dedicated channel of the first cell. ,
[I541 In step S2809, the user equipment parses the second dedicated signaling, to obtain the
component carrier to be added and to obtain the system information related to the component
30 carrier. -
[I551 In step S2811, the user equipment configures the component carrier to be added based on
Sony China Ref.: CNPA09032CN00
1 Sony Ref.: SP262367CNOO
Ref.: PO92387 1ZX
lation of Application No. 20 10 10002920.9
the system information so as to activate the component carrier.
[I561 By using the method, the user equipment may obtain the updated system information in
time. Since it keeps in connection with the base station via the first cell (the special cell), the
1 -
case that the system information can not be received is avoided. In addition, by using the
dedicated signaling, the CA-NS user equipment will not receive such information.
[I571 The transmitting process of Fig. 27 and the receiving process of Fig. 28 constitute an
example of updating the system information in the CA-S communication system.
[I581 In an example, the component carrier tq be added may be an extension carrier. And in such
a case, step S2706 may include encapsulating the configuratign$formation related to the
extension carrier in the second dedicated signaling. Accordingly, after the user equipment
receives the second dedicated signaling containing the configuration information related to the
extension carrier, it parses the second dedicated signaling to obtain the configuration information
and configures the extension carrier based on configuration information.
[I591 In another example, the component carrier to be added may include a carrier segment to be
attached to the component carrier. In this case, the network side (the base station) of the
communication system may transmit the configuration information related to carrier segment to
the user equipment via the first cell. As an example, the configuration infomation related to the
carrier segment and the system information related to the component carrier to be added both
8
may be encapsulated in the second dedicated signaling. Accordingly, the user equipment rekeives
the system information related to the component carrier via the dedicated channel of the first ctll
and configures the component carrier based on the information. If the configuration informatiop
related to the carrier segment and the system information related to the component carrier to be
added both are encapsulated in the secdnd dedicated signaling, the user equipment may fkther
obtain the configuration information related to the carrier segment by parsing the second
dediqated signaling and configure the carrier segment based on the configuration information.
[160] In an example, the system information related to the component carrier to be added may
include transmission bandwidth configuration information and frequency band indicator
information related to the component carrier to be added. If the component carrier to be added is
used for uplink transmission or if the component carrier to be added is used for downlink
transmission but uplink information needs to be configured for it, the system information related
to the component carrier to be added may further include the uplink carrier frequency, the uplink
transmission bandwidth and the configuration information of uplink channels of the component
c'arrier to be added. If the component carrier to be added is for downlink transmission, the system
Sony China Ref.: CNPAO9032(3NOO
Sony Ref.: SP262367CN00 - . .
talen Ref.: IP0923871ZX
lation of Application No. 201010002920.9
information related to the component carrier to be added may further include the configuration
information of the downlink channels of the component carrier to be added.
1 ,
[I611 As an example, the system information may adopt the format of the system information
defined in LTE standari. The system informatien may include main information block (MIB)
and one or more system information block (SIB). The MIB contains some most important
information and related parameters for obtaining other important information from the cell, such
as the downlink bandwidth configuration, the physical hybrid automatic repeat request indicator
channel configuration, and the like. An SIB may include information such as whether the user
equipment is allowed to be connected to a cell, the radio resource configuration information of
the user equipment, the cell reselection information, and the like. '-
[162] As described above, the second dedicated signaling may be newly defined signaling, or
may be an extension to a known signaling. As an example, the second dedicated signaling may
be an extension to the radio resource control connection reconfiguration message (e.g.
RRCConnectionReconfigurationmessage). In this case, step S2706 may include encapsulating
the first information in the radio resource control connection reconfiguration message. By using
the known signaling, the trouble of redefining a new message structure is avoided.
[163] As an example, the extension to the radio resource control connec on reconfiguration
message (RRCConnectionReconfiguration) may include the system information, such as MIB,
SIB 1, and SIB2, etc. Particularly, MIB may include the following: I
dl-Bandwidth: transmission bandwidth configuration information, i.e. the number of RBs
in the downlinks. i
phich-Config: PHICH (Physical hybrid-ARQ indicator channel) channel configuration
information.
[164] SIB1 may include: freqBandIndicator: which is a frequency indicator flag.
>
' I
[165] If the component carrier to be added is for uplink transmission or it needs to configure the
uplink information of a downlink component carrier, SIB2 may include the following:
ul-CarrierFreq: carrier frequency.
ul-Bandwidth: uplink transmission bandwidth, i.e. the number of RBs in the uplink.
rach-Config: RACH (Random Access Channel) channel configuration information.
prach-Config: PRACH (Physical Random Access Channel) channel configuration
islformation.
Sony China Ref.: CNPA09032CN00 , Sony Ref.: SP262367CN00 -- .
talen Ref.: IP092387 1ZX
lation of Application No. 20101 0002920.9 i a
pusch-Config: PUSCH (Physical uplink shared channel) channel configuration
information.
i
pucch-Config: PUCCH (Physical uplink control channel) channel configuration
\ -
information.
5 soundingRS-UL-Config: SoundingRS uplink configuration information.
uplinkPowerContro1: uplink power control.
ul-CyclicPrefixLength: uplink cyclic prefix length.
t
[I661 If the component carrier to be added is for downlink transmission, SIB2 may include:
.-*
mbsfn-SubframeConfigList: the subframe list reserved for MBSFN (Multimedia
lo Broadcast multicast service Single Frequency Network) of downlink.
bcch-Config: BCCH channel configuration information.
pcch-Config: PCCH (Paging Control Channel) channel configuration information.
pdsch-Config: PDSCH (Physical downlink shared channel) channel configuration
information.
15 [167] Of course, the above system information is merely an example, and re disclosure is not
limited to this. In addition, when using a dedicated signaling, the system information may be
transferred in the formal of an increment signaling. For example, the related information ,of the
first cell may be used as default information, and in this case, the update of the relat,ed
information may be identified with an on flag "ON". For example, when the on flag "ON" is 1, it
I
20 means that there is update in the related information; and when the flag "ON is 0, it means that
there is no update in the related information. When receiving the system information transmitted
via an increment signaling, the user equipment may determine which part's the system
info~ationis updated.
' 3
[I681 The second dedicated signaling and the third dedicated signaling both can be transmitted
25 in the format of an increment signaling. When the system information or the updated system
information is sent via a dedicated signaling, the signaling may also adopt the format of an
increment signaling. For example, when being transmitted by using a dedicated signaling, the
updated system information may include only the part of system information related to the
change, while the other information that is irrelevant to the change is excluded. For another
30 example, the second dedicated signaling may include only the system information that is related
te the component carrier to be added or to the carrier segment and that affects the CA
transmission.
-26-
Sonv China Ref.: CNPA09032CN00
1 S& Ref.: SP262367CN00 -
talen Ref.: IP092387 1ZX
lation ofApplication No. 201010002920.9
[I691 Fig.. 37 is a schematic diagram showing the process of obtaining the updated system
information by the user equipment when a component carrier is added under carrier aggregation
',
scenario (i.e. obtaining the system information related to the component carrier to be added). As
shown in Fig. 37, it is sopposed that the cell corresponding to the component carrier CCl of the
5 user equipment UE is the first cell (the special cell) of the user equipment and that a component
carrier CC2 is to be added for the user equipment. Firstly, the user equipment establishes an RRC
(Radio Resource Control) connection with CCl (the special cell) (the RRC connection can be
established by using any appropriate method, the description of which is omitted). The system
information of the component carrier CC2 to be added may be carried by using the extension of
10 the RRCConnectionReconfiguration message. The user equipmeLmy obtain the message via
the cell corresponding to CC1. Then the user equipment may activate the component carrier CC2
by using the system information contained in the message. By using this method, the CA
transmission may be facilitated. .
15 Extension Carrier
[I701 An extension carrier is a carrier that can not be used independently; it belongs to a set of
component carriers which includes at least one carrier that can be used ,independently. The
extension carrier has to co-exist with a carrier that can be used independently. Generally the
extension carrier is not bsed to transfer the system information. When an extension carrier is to
20 be added to a currently used component carrier, the related system information may be
transferred by using the transmitting and receiving methods as shown in Fig. 27 and Fig. 28.
1
[I711 Further, the channel configuration of the extension carrier may be different from that of
other types of carriers. For example, an'extension carrier does not contain RACH, PDCCM, and
PUCCH channels, and the like. Thus, when transmitting the system information in SIB2, such
25 information can be omitted. In this way, the amount of transmitted information can be fupher ,
reduced.
[I721 By using the method as shown in Fig. 27 and Fig. 28 to transmit and receive the system
information related to the extension carrier by using the dedicated signaling of the first cell, the
overhead for listening to the broadcast'channel can be avoided.
/
30 [I731 As described above, the change of the system information may include the case of adding
an extension carrier. In other words, the methods shown in Figs. 2-26 and the apparatuses and
systems shown in Figs. 3 1-36 to be described below may also be applied to transmit and receive
*
the system information related to the extension carrier, the description of which is not repeated
Sony China Ref.: CNPA09032CNOO
SP262367CNOO
en Ref.: IP092387 1ZX
lation of Application No. 20 10 10002920.9
here.
Carrier Segment l -
[I741 A carrier segment can be considered is a backward compatible data transmission
extension on component carrier, in which some consecutive resources blocks are attached to a
backward compatible component carrier so that the resulted component carrier can be used a
backward incompatible component carrier to be sued by the LTE-A user equipment.
[I751 The methods of providing and receiving' the system information shown in Figs. 27-28 may
be applied to the case that the component carrier to be added conta3m%carrier segment.
[I761 The methods of providing and receiving the system information and the methods of
updating the system information shown in Fig. 2 to Fig. 26 each can be applied to the case of
attaching a carrier segment to a currently used (activated) component carrier. As an example, in
such case, the first information / the notification information may include information indicating
the carrier segment to be added. As another example, the carrier segment to be added to the
currently used component carrier may be expressed by an indicator (also referred to the third
indicator, e.g. CarrierSegmentIndicator). If a CA-NS user equipment receives the information
transmitted from the base station, it may judge whether to accept the systerr! information based
on the third indicator. If the third indicator indicates that a carrier segment is to be added, the
CA-NS user equipment will not accept the system information. That is, the scenario of a d k g a
b
carrier segment will not affects the CA-NS user equipments.
I
[I771 In an example, if the method shown in Fig. 11, Fig. 13, or Fig. 15 is used to add a carrier
segment to a currently used component carrier (i.e. transmitting the first information /the
notification information via the first cell by using a dedicated signaling and transmitting
configuration information related to the carrier segment via the broadcast channel of tfie
corfesponding cell, i.e. the cell corresponding to the component carrier to which the cake?
segment is to be added), the base station may encapsulate the first information or the notification
information containing the third indicator in the first dedicated signaling in which the third
indicator is set as valid. In the broadcast channel of the corresponding cell, the system
information related to the carrier segment is broadcast via the second broadcast signaling.
However, no update notification is added in the second broadcast signaling, so as to be
compatible with LTE Release 8. For a user equipment which does not support LTE-A, the change
of the system information is transparent. That is, if a user equipment does not support LTE-A, it
will not receive the first dedicated signaling and will not listen to the broadcast channel of the
Sony Chiia Ref.: CNPA09032CN00
Fony Ref.: SP262367CNOO - ..
alen Ref: k IP092387 1ZX lation ofApplication No. 201010002920.9 i *
corresponding cell on which the updated system information is transferred. After a user
equipment supporting LTE-A receives the first information or notification information and
determines that the third indicator is valid, it begins to listen to the broadcast channel of the
corresponding, to receivk the updated system information.
[I781 In another example, if the method shown in Fig. 12, Fig. 14, or Fig. 15 is used to add a
carrier segment to a currently used component carrier (i.e. transmitting the first information /the
notification information via the broadcast channel of the first cell and transmitting configuration
information related to the carrier segment via the broadcast channel of the corresponding cell, i.e.
the cell corresponding to the component carrikr to which the carrier segment is to be added), the
base station may encapsulate the first information or the notificat-i*o n information containing the
third indicator in the first broadcast signaling in which the third indicator is set as valid. In the
broadcast channel of the corresponding cell, the updated system information, i.e. the system
information related to the carrier segment, is broadcast via the second broadcast signaling. If a
user equipment does not support LTE-A, it will not listen to the broadcast channel of the
corresponding cell on which the updated system information is transferred (or ignore the
broadcast updated system information) after it receives the first information or the notification
information and determines that the third indicator is valid. After a user equipment supporting
LTE-A receives the first information or notification information and deterhines that the third
indicator is valid, it begins to listen to the broadcast channel of the corresponding, to receive the
updated system information I
b
[I791 Fig. 29 shows a method of providing the system information related to a carrier segment in
the case that the carrier segment is to be attached to a currently used component carrier
according to another embodiment of the disclosure. In the method of Fig. 29, the related system
information is transmitted to the user equipment directly via the cell corresponding to the
currently used component carrier.
>
' ,
[18G As shown in Fig. 29, in step S2902, when adding a carrier segment to the currently used
component carrier, the system information related to the carrier segment is generated, and the
information indicating that a carrier segment is to be added may also be generated. Particularly,
the system information may be obtained from corresponding configuration file by the base
station of the communication system. In step S2904, the generated information is sent via the cell
corresponding to the currently used component carrier. As an example, the system information
can be encapsulated in a dedicated signaling (also called as the fourth dedicated signaling), and
t.e fourth dedicated signaling is transmitted via the dedicated channel of the cell. As another
example, the system information can be encapsulated in a broadcast signaling (also called as the
- 29 -
Sony China Ref.: CNPA09032CN00
I Sony Ref.: SP262367CNOO - . .
talen Ref.: IP092387 1ZX
lation of Application No. 201010002920.9 *
third broadcast signaling), and the third broadcast signaling is transmitted via the broadcast
channel of the cell.
i ,
[I811 Fig. 30 shows a method of receiving the system information related to the carrier segment
\ -
when adding the carrier segment to the currently used component carrier, which corresponds to
5 the transmitting process shown Fig. 29. As shown in Fig. 30, in step S3003 the user equipment
receives the system information related to the carrier segment and the information indicating that
the carrier segment is to be added via the cell corresponding to the currently used component
carrier. In step S3005, the user equipment configures the carrier segment based on the system
information, to activate the carrier segmed. In the case that the system information is
lo encapsulated in the fourth dedicated signaling, the user equipmeriPiGc"eives the fourth dedicated
signaling via the dedicated channel of the cell, parses the fourth dedicated signaling to obtain the
system information, and configures the carrier segment based on the system information. In the
case that the system information is encapsulated in the third broadcast signaling, the user
equipment receives the third broadcast signaling by listening to the broadcast channel of the cell,
15 parses the third broadcast signaling to obtain the system information, and configures the carrier
segment based on the system information.
[I821 The transmitting method shown in Fig. 29 and the receiving method shown in Fig. 30 may
a
also be used to add an extension carrier to a currently used component carrier, the description of
which is not repeated here.
20
[I831 Fig. 31 shows an apparatus of providing the system information in the CA-$
communication system according to an embodiment of the disclosure. As shown in Fig. 31, the
apparatus includes: an information device 3102, a cell determining device 3104 and a
transmitting device 3 106. I
25 [184]' The information generated device 3102 may generate the first information when? the.
system information of the communication system changes. The first information contains
information that the system information changes. The related information can be obtained fiom
the corresponding configuration file in. the base station of the communication system, to
determine whether the system information changes or not.
30 [185] The cell determining device 3104 may determines the first cell of a user equipment
involved in the change of the system information. The first cell is one of the cells to which the
user equipment is connected, and corresponds to a component carrier which is being used - by the
user equipment and is kept in connection with the base station of the communication system. The
Sony China Ref.: CNPA09032CNOO
Ref.: SP262367CN00 -- .$.
alen Ref.: IP0923871ZX
slation ofApplication No. 201010002920.9 L a
first cell (the special cell) is the same as described above, the description of which is not repeated
here. The cell determining device 3 104 may determine the special cell of the user equipment by
using the above method, the description of which is not repeated here.
' 1
[186] The transmitting device 3 106 may transmit the first information to the user equipment via
5 the first cell.
1 [I871 The above apparatus may be configured at the network side of the communication system,
I for example may be configured in the base station of the communication system. In the CA-S
communication system, the first cell always keeps in connection with the main node (e.g. the
f
base station) of the communication system. Thus, by using the above apparatus, the case that the
10 user equipment can not receive the updated system information can be avoided, so that the
I system information can be updated or provided in time. In addition, the base station needs not to
1 transmit the system information or notify the update of the system information via each of the
1 cells supported by the user equipment, thereby decreasing the signaling load of the whole
1 system.
1 15 [I881 In an example, the information generated device 3102 may be further configured to
1 encapsulate the first information in a dedicated signaling (the first dedicated signaling), and the
transmitting device 3106 may transmit the first dedicated signaling to the us r e ui ment ti q pme nt via the
first cell, i.e. via the dedicated channel of the first cell.
8
[I891 In another example, the information generated device 3102 may be further configu'red to
1 20 encapsulate the first information in a broadcast signaling (the first broadcast signaling) and the
1 transmitting device 3 106 may transmit the first broadcast signaling to the user equipment via th,e
I
broadcast channel of the first cell.
[I901 Fig. 32 shows an apparatus of receiving the system information in the CA-S
communication system according to an embodiment of the disclosure. As shown in Fig. 32, the
25 app&atus includes: a receiving device 3203 and a control device 3205. I (
[I911 The receiving device 3203 may receive the first information containing the information
indicating that the system information changes via the first cell.
[I921 The control device 3205 parses. the first information to obtain the information indicating
that the system information changes.
30 [I931 The apparatus of receiving the system information may be configured in the user
equipment of the communication system. With apparatus of receiving the system information,
fhe user equipment can know the change of the system information in time. Since the first cell
Sonv China Ref.: CNPAO9032CN00 & Ref.: SP262367CN00
alen Ref.: IP0923871ZX
lation ofApplication No. 201010002920.9
(the special cell) is always connected to the base station, the case that the information can not be
received is avoided. 'In addition, the user equipment needs not to listen to all the cells
i, .
corresponding to all of its supportable component carriers, by which the power consumption of
the user equipment cad be reduced significantly and the life time of the battery of the user
5 equipment can be lengthened.
[I941 In the case that the first information is encapsulated in the first dedicated signaling, the
receiving device 3203 may be configured to: receive the first dedicated signaling containing the
first information via the first cell, i.e. via the dedicated channel of the first cell.
t
[I951 In the case that the first information is encapsulated in the first broadcast signaling, the
.-*
lo receiving device 3203 may receive the first broadcast signaling containing the first information
via the broadcast channel of the first cell, e.g. by listening to the broadcast channel of the first
cell.
[196] According to an embodiment, a CA-S communication system may include the above
apparatus of providing the system information and the apparatus of receiving the system
15 information, for transferring and updating the system information.
[I971 Similar to the methods shown in Fig. 2 to Fig. 8, the first information may include only the
information indicating that the system information changes (also calledlas the notification
information). The apparatuses of transmitting and receiving the same are described below with
#
reference to Fig. 33 and Fig. 34. I
L
20 [I981 AS another embodiment, the first information generated by the information generated
device 3102 may also include the updated system information, and the transmitting device 3106
-
may transmit the first information containing the updated system information to the user
equipment via the first cell (e.g. by the first broadcast signaling or the first dedicated signaling).
And at the side of the user equipment, the control device 3205 parses the first information to
25 obtah the updated system information. As an example, the first information may also include the
information indicating whether the change of the system information affects the CA transmission
(also called as the third information). For example, the third information may indicate the system
information of which part(s) of the communication system changes and the user equipment (the
control device) may determine whethe; the CA transmission is affected by this information.
30 [I991 As another embodiment, the change of the system information may include the case of
adding a carrier segment andlor an extension carrier to a currently used component carrier. In
this case, the first information may include the system information related to the carrier segment
*
andlor the extension carrier. When the receiving device 3203 receives the first information via
Sony china Ref.: CNPA09032CNOO
Ref.: SP262367CN00
alen Ref. : IP0923871ZX
lation ofApplication No. 201010002920.9
the first cell (e.g. by the first broadcast signaling or the first dedicated signaling), the control
device 3205 parses the first information to know that the carrier segment and/or the extension
i ,
carrier is to be added and to obtain the system information related to the carrier segment and/or
the extension carrier, anL1 then configure the carrier segment and/or the extension carrier based
5 on the system information.
[ZOO] Fig. 33 shows an apparatus of notifying update of the system information in a CA-S
communication system according to an embodiment of the disclosure. As shown in Fig. 33, the
t
apparatus includes: a notification generating device 3302, a cell determining device 3304 and a
-.Lrdc
10 transmitting device 3306.
[201] The notification generating device 3302 may generate the notification information
indicating that the system information changes when the system information of the
communication system changes. The notification information is an example of the first
information.
15 [202] The cell determining device 3304 determines the first cell of a user equipment involved in
the change of the system information. The first cell is one of the cells to which the user
equipment is connected, and corresponds to a component carrier which is being used by the user
equipment and is kept in connection with the base station of the communication system. The first
I
cell (the special cell) is the same as described above, the description of which is not repeated
20 here. The cell determining device 3 104 may determine the special cell of the user equipment by
using the above method, the description of which is not repeated here. The cell determining
device 3304 may determine the special cell of the user equipment by using any of the above
described method, the description of which is not repeated here.
[203] The transmitting device 3306 may transmit to the user equipment the notification
25 infohation via the first cell. I I
[204] In an example, the notification generating device 3302 may encapsulate the notification
information in a dedicated signaling (the first dedicated signaling), and the transmitting device
3306 transmits the first dedicated signaling to the user equipment via the first cell, via the
dedicated channel of the first cell. In another example, the notification generating device 3302
30 may encapsulate the notification information in a broadcast signaling (the first broadcast
signaling), and the transmitting device 3306 transmits the first broadcast signaling to the user
equipment via the broadcast channel of the first cell.
[205] Fig. 34 shows an apparatus of receiving the notification of update of the system
-33-
Sony China Ref.: CNPA09032CN00
r Sony Ref.: SP262367CN00 - 3.
alen Ref.: a IP092387 1ZX lation of Application No. 201010002920.9 (-
information in a CA-S communication system according to an embodiment of the disclosure. As
shown in Fig. 34, the apparatus includes: a notification receiving device 340 and a control device
I .
3 -
[206] The notification receiving device 3403 receives via the first cell the notification
5 information transmitted from the network side of the communication system (the base station).
The notification information contains information indicating that the system information
changes.
[207] The control device 3405 parses the notification information to get aware that the system
?
information of the communication system changes.
,-L
lo [208] The apparatus of receiving the notification may be configured in the user equipment of the
communication system. With the apparatus, the user equipment can get the notification of the
change of the system information in time. Since the first cell (the special cell) is always
connected to the base station, the case that the information can not be received is avoided. In
addition, the user equipment needs not to listen to all the cells corresponding to all of its
15 supportable component carriers, by which the power consumption of the user equipment can be
reduced significantly and the life time of the battery of the user equipment can be lengthened.
[209] If the notification information is encapsulated in the first dedicated siaaling, the receiving
device 3403 may be configured to: receive the first dedicated signaling containing the notification
I
information via the first cell, i.e. via the dedicated channel of the first cell. 1
20 I2101 In the case that the notificationinformation is encapsulated in the first broadcast signaliAg,
the receiving device 3403 may receive the first broadcast signaling containing the notification
information via the broadcast channel of the first cell, e.g. by listening to the brpadcast channel
of the first cell.
[211] In an example, the notification generatkg device 3302 may encapsulate the updatdd
25 system information in a broadcast signaling (the second broadcast signaling), and' thd
transmitting device 3306 may transmit the second broadcast signaling to the user equipment via
the broadcast channel of the cell (the second cell) corresponding to the component carrier
involved in the change of the system information. In this case, at the side of the user equipment,
the control device 3405 parses the notification information to know the change of the system
30 information, and indicates the receiving device 3403 to listen to the broadcast channels of all the
cells corresponding to all of the component carriers supported by the user equipment, to receive
the updated system information transmitted from the network side (the base station) of the
?
communication system.
-34-
Sony China Ref.: CNPA09032CN00
Ref.: SP262367CNOO
alen Ref. : IP092387 1ZX
lation ofApplication No. 201010002920.9
[212] As another example, the notification information generated by the notification generating
device 3302 may further include the information for identifying a component carrier involved in
1
the change of the system information (the second information). When the receiving device 3403
of the user equipment receives the notification information containing the second information,
the control device 3405 parses the notification information to obtain the second information to
know the component carrier involved in the change of the system information based on the
second information, and then instructs the receiving device 3403 to listen to the broadcast
channel of the cell corresponding to this component carrier to receive the updated system
information. Thus the user equipment needstnot to listen to all the cells, by which the power
consumption of the user equipment can be reduced and the 1 i f e . b o f the battery of the user
equipment can be lengthened.
[213] As another example, the notification information generated by the notification generating
device 3302 may further include information (the third information) for identifying whether the
change of the system information affects the CA transmission. When the receiving device 3403
of the user equipment receives the notification information containing the third information, the
control device 3405 parses the notification information to obtain the third information, and based
on the third information, decides whether to receive the updated system information. For
example, if the user equipment supports CA and the third information indicbtes that the change
of the system information does not affect CA transmission, the control device 3405 may choose
8
to not receive the updated system information, and i.e. it does not instruct the receiving device
3403 to receive the updated system information. If the user equipment does not support CA afid
the third information indicates that the change of the system information affects the CA
transmission, the user equipment chooses to not receive the updated system information. If the
control device 3405 determines that the change of the system information affects the CA
transmission based on the third information and decides to receive the updated systepl
infohation, it instructs the receiving device 3403 to listen to the corresponding cell to receive,
the updated system information.
[214] As another example, the notification generating device 3302 may encapsulate the updated
system information in a dedicated signaling (also called as the third dedicated signaling) and the
30 signaling may be transmitted and received via the dedicated channel of the second cell. In the
embodiment, the notification information includes the information (the second information) for
identifying the component carrier involved in the change of the system information. When the
receiving device 3403 of the user equipment receives the notification information containing the
*
second information, the control device 3405 parses the notification information to obtain the
Sony China Ref.: CNPAO9032CN00
Sony Ref.: SP262367CN00
Ref.: IP092387 1ZX
lation of Application No. 20 1010002920.9
second information, and based on the second information, instructs the receiving device 3403 to
listen to the dedicated channel of the cell corresponding to this component carrier, so as to
i
receive the updated system information. In the embodiment, the user equipment needs not to
listen to other cells corresponding to the other component carriers supported by it, by which the
power consumption of the user equipment can be reduced and the life time of the battery of the
user equipment can be lengthened.
[215] Similar to the above method embodiments, the broadcast signaling andlor the dedicated
signaling may be newly defined signaling, or may be extension to known signaling, the
description of which are omitted herein. f
,-*
[216] According to an embodiment, a CA-S communication system may include the above
apparatus of notifying the update of the system information and the apparatus of receiving the
notification of the update of the system information, for notifying the update of the system
information.
[217] Fig. 35 shows an apparatus of transmitting the system information when adding a
component carrier according to an embodiment of the disclosure. As shown in Fig. 35, the
apparatus includes: a dedicated signaling generating device 3502, a cell deteqnining device 3504
and a transmitting device 3506.
?
12181 The dedicated signaling generating device 3502 may generate the first information ;hen a
component carrier is to added, the first information includes the information indicating that the
component carrier is to be added and the system information related to the component carrier tb
be added. The dedicated signaling generating device 3502 may be configured to.encapsulate the
first information in the second dedicated signaling.
[219] The cell determining device 3504 may determine the first cell of the user equipment
>
involved in the change of the system information. The first cell (the special cell) is the same as'
descrilied above, the description of which is not repeated here. The cell determining device 3 104
may determine the special cell of the user equipment by using the above method, the description
of which is not repeated here. The cell determining device 3304 may determine the special cell
of the user equipment by using any of the above described method, the description of which is
not repeated here. The cell determining device 3504 may determine the special cell of the user
equipment by using any of the above described methods, the description of which is not repeated
here.
*
12201 The transmitting device 3506 transmits the second dedicated signaling to the user
- 36 -
Sonv China Ref.: CNF'A09032CN00
I SO+ Ref.: SP262367CN00
talen &ta len Ref: IP0923871ZX lslation ofApplication No. 201010002920.9
equipmentvia the first cell, via the dedicated channel of the first cell.
[221] Fig. 36 shows an,apparatus of receiving the system information when a component carrier
is to be added, which corresponds to the apparatus of providing the system information shown in
\' -
Fig. 35. As shown in Fig. 36, the apparatus includes: a dedicated signaling.receiving device 3603
5 and a control device 3605.
[222] The signaling receiving device 3603 may be configured to receive the second dedicated
signaling containing the first information which includes the system information related to the
component carrier to be added via the first cell. The control device 3605 is configured to parse
@
the second dedicated signaling to know that the component carrier is to be added and to obtain
,-
lo the system information related to the component carrier, and then configure the component
carrier based on the system information related to this component carrier.
[223] Since the system information is transmitted via the first cell by using the dedicated
signaling, the user equipment needs not to listen to the broadcast channels of all the cells. In
addition, by using the dedicated signaling, such information becomes transparent to those
15 CA-NS user equipments.
[224] In an example, the component carrier to be added may be an extension carrier, and the first
information generated by the dedicated signaling generating device 3502 may further include the
system information related to the extension carrier. Accordingly, when the signaling receiving
I
device 3603 receives the second dedicated signaling containing the first information, the control
device 3605 parses the second dedicated signaling to know the extension carrier to be added ahd
to obtain the system information related to the extension carrier, and configures the extensiop
\ carrier based on the information.
[225] In another example, the component carrier to be added may include a carrier segment to be
attached to the component carrier. The dedicated signaling generating device 3502 is further
conAgured to generate the system information related to the carrier segment, and the transmitting
device- 3506 is further configured to transmit the system information related to the carrier
segment to the user equipment via the first cell. For example, the system information related to
the carrier segment may be capsulated in. the second dedicated signaling. Accordingly, when the
signaling receiving device 3603 reciives the second dedicated signaling containing the first
information, the control device 3605 parses the signaling to obtain the first information to know
the carrier segment is to be added and to obtain the system information related to the carrier
segment, and configures the carrier segment based on the information.
f
[226] According to an embodiment, a CA-S communication system may include the above
Sony China Ref.: CNPA09032CN00
Sony Ref.: SP262367CNOO a%' - ' .
en Ref: IP092387 1ZX
lation of Application No. 201010002920.9
apparatuses of providing and receiving the system information, to transmit the system
information in the case a component carrier is added.
1 .
[227] The system information and the second dedicated signaling may have similar formats and
transmission manners addescribed above with reference to Fig. 27 and Fig. 28, the description of
I 5 which is not repeated here.
[228] In some embodiments or examples, dedicated signaling is used during transmission of the
system information, and only important system information (e.g. the updated system information
or important information related to carrier aggregation, or the like) is transmitted, by which the
4
starting of the CA transmission is accelerated.
*-*
10 [229] In some embodiments or examples, during transmission of the system information, system
information update notification message is transmitted by using a cell (e.g. the special cell)
- corresponding to a certain component carrier, by which the receipt accuracy of the system update
notification message is improved, the energy consumption of the user equipment and monitoring
load is lowered, and the life time of the battery of the user equipment is lengthened.
15 [230] It should be understood that the above embodiments and examples are illustrative, rather
than exhaustive. The present disclosure should not be regarded as being limited to any particular
embodiments or examples stated above. 8
[23 11 In the above embgdiments and examples, the expressions, such as "the first", "the second",
and 'Zhe third" (e.g. the first dedicated signaling, and the second dedicated signaling, aAd the
like), are used. Those skilled in the art will appreciate that such expressions are used merely )to
differentiate the terms in literal, and should not be considered as defining the sequence or the like
of the terms.
[232] As an example, the components, units or steps in the above apparatuses and methods can
be configured with software, hardware, firmware or any combination thereof in the main node
t
(e.g. 'the base station) of the communication network, as part of the radio resource control'
apparatus of the base station. The components, units or steps in the above resource allocating
apparatuses and methods can b- e c n*
with software, hardware, firmware or any
- I . .
combination thereof by u;ig any apprhpri&e means or manners known in the art, the description
of which is not detailed herein.
30 [233] As an example, the above apparatuses and methods can be realized in an existing radio
resource control apparatus of the base station by modifLing the components of the existing radio
%source control apparatus.
Sony China Ref.: WAO9032CN00 - ?.
lation of Application No. 201010002920.9
[234] As an example, in the case of using software or firmware, programs constituting the
software for realizing the above method or apparatus can be installed to a computer with a
i
specialized hardware structure (e.g. the general purposed computer 3800 as shown in Figure 38)
from a storage medium.or a network. The computer, when installed with various programs, is
capable of carrying out various functions.
[235] In Figure 38, a central processing unit (CPU) 3801 executes various types of processing in
accordance with programs stored in a read-only memory (ROM) 3802, or programs loaded from
a storage unit 3808 into a random access memory (RAM) 3803. The RAM 3803 also stores the
data required for the CPU 3801 to execute darious types of processing, as required. The CPU
3801, the ROM 3802, and the RAM 3803 are connected to one a'iBt%?ir through a bus 3804. The
bus 3804 is also connected to an inputtoutput interface 3805.
[236] The input/output interface 3805 is connected to an input unit 3806 composed of a
keyboard, a mouse, etc., an output unit 3807 composed of a cathode ray tube or a liquid crystal
display, a speaker, etc., the storage unit 3808, which includes a hard disk, and a communication
unit 3809 composed of a modem, a terminal adapter, etc. The communication unit 3809 performs
communicating processing. A drive 3810 is connected to the input/output interface 3805, if
needed. In the drive 38 10, for example, removable media 38 1 1 is loaded as a recording medium
8 containing a program of the present invention. The program is read from the removable media
381 1 and is installed into the storage unit 3808, as required.
4
[237] In the case of using software to realize the above consecutive processing, the programs
constituting the software may be installed from a network such as Internet or a storage medium
such as the removable media 3 8 1 1.
[238] Those skilled in the art should 'understand the storage medium is not limited to'the
removable media 3811, such as, a magnetic disk (including flexible disc), an optical disc
(including compact-disc ROM (CD-ROM) and digital versatile disk (DVD)), an magneto-optical
' disc (including an MD (Mini-Disc) (registered trademark)), or a semiconductor memory, in
which the program is recorded and which are distributed to deliver the program to the user aside . -,
from a main body of a device, or the ROM 3802 or the hard disc involved in the storage unit
3808, where the program is recorded and which are previously mounted on the main body of the
device and delivered to the user.
[239] The present disclosure further provides a program product having machine-readable
instruction codes which, when being executed, may carry out the methods according to the
e'mbodiments.
Sony China Ref.: CNPA09032CNOO , Sony Ref.: SP262367CNOO -
'talen Ref.: IP092387 1ZX
&IS lation of Application No. 201010002920.9
[240] Accordingly, the storage medium for bearing the program product having the
machine-readable inst,ruction codes is also included in the disclosure. The storage medium
!
includes but not limited to a flexible disk, an optical disc, a magneto-optical disc, a storage card,
or a memory stick, or the like.
[241] In the above description of the embodiments, features described or shown with respect to
one embodiment may be used in one or more other embodiments in a similar or same manner, or
may be combined with the features of the other embodiments, or may be used to replace the
features of the other embodiments.
t
[242] As used herein, the terms the terms "comprise," "include," "have" and any variations
.,d
thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or
apparatus that comprises a list of elements is not necessarily limited to those elements, but may
include other elements not expressly listed or inherent to such process, method, article, or
apparatus.
12431 Further, in the disclosure the methods are not limited to a process performed in temporal
sequence according to the order described therein, instead, they can be executed in other
temporal sequence, or be executed in parallel or separatively. For example, in some
embodiments the step of determining the first cell may be performed before the step of
I
generating the first information or the notification information. That is, the executing orders
described above should hot be regarded as limiting the method thereto. I
[244] While some embodiments and examples have been disclosed above, it should be noted
that these embodiments and examples are only used to illustrate the present disclosure but not tq
limit the present disclosure. Various modifications, improvements and equivalents can be made
by those skilled in the art 'without defiarting from the scope of the present disclosure. &ch
modifications, improvements and equivalents should also be regarded as being covered by the
I
protection scope of the present disclosure.
' i

Claims
1. An apparatus for^vireless communication in a communication system, comprising:
an information generating device, configured to generate, when there is a change in system
information of the commimication system, first information which comprises information
indicating that there is a change in system information; and
a transmitting device, configured to transmit the first information to a user equipment
involved in the change in system information via a first cell only, and transmit updated system
information in a subsequent process after the tuansmitting of the first information,
wherein the first cell is one of cells to which the usef*equipment is cormected and
corresponds to a component carrier which is being used by the user equipment and is kept in
coimection with a base station of the communication system.
2. The apparatus according to claim 1, wherein the transmitting device is fiirther configured
to transmit the first information via a Broadcast Control Channel (BCCH) of the first cell.
3. The apparatus according to claim 1, wherein the transmitting device is further configured
to encapsulate the first iiiformation in a paging message to inform the user equipment about the
change in system information.
4. An apparatus for wireless communication in a communication system, comprising:
an information generating device, configured to generate, when there is a change in system
information of the communication system, first information which comprises information
indicating that there is a change in system information; and
a transmitting device, configured to encapsulate the first information in system information
block message and transmit the system iiiformation block message to a user equipment involved
in the change in system information via a first cell only, wherein the first cell is one of cells to
which the user equipment is cormected and corresponds to a component carrier which is being
used by the user equipment and is kept in connection with a base station of the communication
system.
- 1 /14 -
^||p. The apparatus according to claim 4, wherein the change in system inforrnation is
identified with a flag. j
6. An apparatus for wireless communication in a communication system, comprising:
an information generating device, configured to generate, when a cell is to be added to a
user equipment in the communication system, first information which comprises information
indicating that the cell is to be added and system information relevant for an operation of adding
the cell; and
a transmitting device, configured to transmit, via a dedicated channel, the first information
to the user equipment for which the cell is to be added. .^^.^i^
7. The apparatus according to claim 6, wherein the dedicated channel is between the user
equipment and a first cell, wherein the first cell is one of cells to which the user equipment is
connected and corresponds to a component carrier which is being used by the user equipment
and is kept in connection with a base station of the commimication system.
8. The apparatus according to claim 6, wherein the transmiting device is further configured
to encapsulate the first information in an RRC Connection Reconfiguration message before
transmiting.
9. An apparatus for wireless communication in a communication system, comprising:
an information generating device, configured to generate, when a cell is to be added to a
user equipment in the communication system, first information which comprises information
indicating that the cell is to be added and system information relevant for an operation of addiilg
the cell; and
a transmitting device, configured to transmit the first information to the user equipment via
a first cell, wherein the first cell is one of cells to which the user equipment is connected and
corresponds to a component carrier which is being used by the user equipment and is kept in
connection with a base station of the commimication system.
10. The apparatus according to claim 9, wherein the transmiting device is further configured
to transmit the first information to the user equipment via a dedicated channel of the first cell.
- 2 / 14 -
j
11. The apparatus according to claim 9, wherein the transmiting device is further configured
to encapsulate the first information in an RRC Connection Reconfiguration message before
transmiting.
12. An apparatus for wireless communication in a communication system, comprising:
a receiving device, configured to receive, via a first cell only, first information which
comprises information indicating that there is a change in system information relevant to the
apparatus, and receive updated system information in a subsequent process after the receiving of
the first information, ,k..^*
wherein the first cell is one of cells to which the apparatus is coimected and corresponds to
a component carrier which is being used by the apparatus and is kept in coimection with a base
station of the commimication system.
13. The apparatus according to claim 12, wherein the receiving device is further configured
to receive the first information via a Broadcast Control Chaimel (BCCH) of the first cell.
I
14. The apparatus according to claim 12, wherein the receiving device is fiirther configured
to decapsulate the first information encapsulated in a paging message. ^
15. An apparatus for wireless communication in a communication system, comprising:,
a receiving device, configured to receive, via a first cell only, and decapsulate a system
information block message with first information encapsulated in, the first information
comprising information indicating that there is a change in system information relevant to the
apparatus,
wherein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in coimection with a base
station of the communication system.
- 16. The apparatus according to claim 15, wherein the change in system information is
identified with a flag.
- 3 /14 -
17. An apparatus for wireless communication in a communication system, comprising: '
A receiving device, j configured to receive, via a dedicated channel, first information which
comprises information indicating that a cell is to be added to the apparatus and system
information relevant for an operation of adding the cell.
18. The apparatus according to claim 17, wherein the dedicated channel is between the
apparatus and a first cell, wherein the first cell is one of cells to which the apparatus is connected
and corresponds to a component carrier whieh is being used by the apparatus and is kept in
cormection with a base station of the communication system. .,,__^
19. The apparatus according to claim 17, wherein the receiving device is further configured
to decapsulate the first information from an RRC Connection Reconfiguration message.
20. An apparatus for wireless communication in a communication system, comprising:
a receiving device, configured to receive, via a first cell, first information which comprises
information indicating that a cell is to be added to the apparatus and system information relevant
for an operation of adding the cell, ,
wherein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in connection with a b^e
station of the communication system.
1
24. The apparatus according to claim 20, wherein the receiving device is fiirther configvired
to receive the first information via a dedicated channel of the first cell.
22. The apparatus according to claim 20, wherein the receiving device is further configured
to decapsulate the first information firom an RRC Connection Reconfiguration message.
23. A method for wireless communication in a communication system, comprising:
generating, when there is a change in system information of the communication system,
first information which comprises information indicating that there is a change in system
- 4 / 1 4 -
infijlpation: and , ,,
transmitting the first information to a user equipment involved in the change in system
information via a first ,cell only, and transmiting updated system information in a subsequent
process after the transmitting of the first information,
wherein the first cell is one of cells to which the user equipment is connected and
corresponds to a component carrier which is being used by the user equipment and is kept in
connection with a base station of the communication system.
24. The method according to claim 23, »wherein the first information is transmitted via a
Broadcast Control Channel (BCCH) of the first cell. ..^*
25. The method according to claim 23, wherein the first information is encapsulated in a
paging message to inform the user equipment about the change in system information.
26. A method for wireless communication in a communication system, comprising:
generating, when there is a change in system information of the commimication system,
first information which comprises information indicating that there is a change in system
information; and ' ,
encapsulating the first information in system information block message and transmiting the
system information block message to a user equipment involved in the change in system
information via a first cell only, wherein the first cell is one of cells to which the user equipment
is connected and corresponds to a component carrier which is being used by the user equipment
and is kept in coimection with a base station of the commimication system. ,
1 •
27. The method according to claim 26, wherein the change in system information is
identified with a flag.
28. A method for wireless communication in a communication system, comprising:
generating, when a cell is to be added to a user equipment in the commimication system,
first information which comprises information indicating that the cell is to be added and system
information relevant for an operation of adding the cell; and
- 5 / 14 -
jyxansmiting, via a dedicated channel, the first information to the user, equipment for which
the cell is to be added. • -.
'29. The method according to claim 28, wherein the dedicated channel is between the user
equipment and a first cell, wherein the first cell is one of cells to which the user equipment is
connected and corresponds to a component carrier which is being used by the user equipment
and is kept in connection with a base station of the communication system.
30. The method according to claim 28, wherein the first information is encapsulated in an
RRC Connection Reconfiguration message before transmiting. ,,.^»
31. A method for wireless communication in a communication system, comprising:
generating, when a cell is to be added to a user equipment in the communication system,
first information which comprises information indicating that the cell is to be added and system
information relevant for an operation of adding the cell; and
transmiting the first information to the user equipment via a first cell, wherein the first cell
is one of cells to which the user equipment is connected and corresponds to a component carrier
which is being used by the user equipment and is kept in connection with a base station of the
( • •
commimication system.
32. The method according to claim 31, wherein the first information is transmitted to the
user equipment via a dedicated channel of the first cell.
33. The method according to claim 31, wherein the first information is encapsulated in an
RRC Connection Reconfiguration message before transmiting.
34. A method for wireless communication in a communication system by an apparatus,
comprising:
receiving, via a first cell only, first information which comprises information indicating that
th^e is a change in system information relevant to the apparatus, and receiving updated system
information in a subsequent process after the receiving of the first information,
- 6 /14 -
4^herein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in connection with a base j
station of the communication system.
t,
35. The method according to claim 34, wherein the first information is received via a
Broadcast Control Channel (BCCH) of the first cell.
36. The method according to claim 34, wherein the first information is decapsulated the first
information encapsulated in a paging messagei.
37. A method for wireless commimication in a communication system by an apparatus,
comprising:
receiving, via a first cell only, and decapsulating a system information block message with
first information encapsulated in, the first information comprising information indicating that
there is a change in system information relevant to the apparatus,
wherein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in connection with a base
station of the communication system.
/ •
38. The method according to claim 37, wherein the change in system information is
identified with a flag.
39. A method for wireless communication in a communication system by an apparatus,
comprising:
receiving, via a dedicated channel, first information which comprises information indicating
that a cell is to be added to the apparatus and system information relevant for an operation of
adding the cell.
40. The method according to claim 39, wherein the dedicated channel is between the
apparatus and a first cell, wherein the first cell is one of cells to which the apparatus is connected
and corresponds to a component carrier which is being used by the apparatus and is kept in
- 7 / 14 -
coi|pction with a base station of the communication system.
41. The method Recording to claim 39, further comprising decapsulating the first
information from an RRC Connection Reconfiguration message.
42. A method for wireless communication in a commimication system by an apparatus,
comprising:
receiving, via a first cell, first information which comprises information indicating that a
cell is to be added to the apparatus and system information relevant for an operation of adding
the cell, .,»--*-
wherein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in coimection with a base
station of the communication system.
43. The method according to claim 42, wherein the first information is received via a
dedicated channel of the first cell.
I
44. The method according to claim 42, further comprising decapsulating tlie first
information from an RRC Connection Reconfiguration message. '
45. An apparatus for wireless communication in a communication system, comprising:'
at least one processor, configured to:
> . •
generate, when there is a change in system information of the commvmication system, first
information which comprises information indicating that there is a change in system information;
transmit the first information to a user equipment involved in the change in system
information via a first cell only; and .
fransmit updated system information in a subsequent process after the fransmitting of the
first information; and
a memory coupled to the at least one processor,
wherein the first cell is one of cells to which the user equipment is connected and
- 8 /14 -
coq|kponds to a component carrier which is being used by the user equipment and is. kept in
connection with a base station of the communication system. • .
f,
46. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
generating, when there is a change in system information of a communication system, first
information which comprises information indicating that there is a change in system information;
transmiting the first information to a user equipment involved in the change in system
information via a first cell only, wherein the first cell is one of cells to which the user equipment
is connected and corresponds to a component carrier which is beiag-iised by the user equipment
and is kept in connection with a base station of the communication system; and
transmitng updated system information in a subsequent process after the transmitting of the
first information,,
47. An apparatus for wireless communication in a communication system, comprising:
at least one processor, configured to:
I
generate, when there is a change in system information of the communication system, first
information which comprises mformation indicating that there is a change in system infomiation;
and
encapsulate the first information in system information block message and transmit ;the
system information block message to a user equipment involved in the change in system
information via a first cell only, wherein the first cell is one of cells to which the user equipment
is coimected and corresponds to a component carrier which is being used by the user equipment
and is kept in connection with a base station of the communication system; and
a memory coupled to the at least one processor.
48. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
generating, when there is a change in system information of a communication system, first
information which comprises information indicating that there is a change in system information;
and
- 9 / 14 -
„4|6Jicapsulatmg the first information in system information block message and transraiting the
system information block message to a user equipment involved in the change in system .
information via a first cell only, wherein the first cell is one of cells to which the user equipment
is connected and correspbnds to a component carrier which is being used by the user equipment
and is kept in connection with a base station of the communication system
49. An apparatus for wireless communication in a communication system, comprising:
at least one processor, configured to:
generate, when a cell is to be added to a user equipment in the communication system, first
information which comprises information indicating that the csLLis to be added and system
information relevant for an operation of adding the cell; and
transmit, via a dedicated channel, the first information to the user equipment for which the
cell is to be added; and
a memory coupled to the at least one processor.
50. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
generating, when a cell is to be added to a user equipment in a communication system, first
information which comprises information indicating that the cell is to be added and system
information relevant for an operation of adding the cell; and
transmiting, via a dedicated channel, the first information to the user equipment for which
the cell is to be added.
1 . •
51. An apparatus for wireless communication in a communication system, comprising:
at least one processor, configured to:
generate, when a cell is to be added to a user equipment in the communication system, first
information which comprises information indicating that the cell is to be added and system
information relevant for an operation of adduig the cell; and
transmit the first information to the user equipment via a first cell, wherein the first cell is
one of cells to which the user equipment is connected and corresponds to a component carrier
which is being used by the user equipment and is kept in cormection with a base station of the
- 10 / 14 -
cojjjjraunication system; and
a memory coupled to the at least one processor. "
52. A non-transistory machine-readable medium storing code that causes a machine to
• ^ - ~ •
execute the code for:
generating, when a cell is to be added to a user equipment in a communication system, first
information which comprises information indicating that the cell is to be added and system
information relevant for an operation of adding the cell; and
transmiting the first information to the user equipment via a first cell, wherein the first cell
is one of cells to which the user equipment is connected and corJSspmids to a component carrier
which is being used by the user equipment and is kept in connection with a base station of the
communication system
53. An apparatus for wireless communication in a communication system, comprising:
at least one processor, configured to:
receive, via a first cell only, first information which comprises information indicating that
there is a change in system information relevant to the apparatus, and receive updated system
information in a subsequent process after the receiving of the first information, wherein ]the first
cell is one of cells to which the apparatus is connected and corresponds to a component cajrier
which is being used by the apparatus and is kept in connection with a base station of the
commimication system; and '
a memory coupled to the at least one processor.
> . •
54. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
receiving, via a first cell only, first information which comprises information indicating that
there is a change in system information of a communication system relevant to the machine, and
receiving updated system information in a subsequent process after the receiving of the first
information,
wherein the first cell is one of cells to which the machine is coimected and corresponds to a
component carrier which is being used by the machine and is kept in connection with a base
station of the commimication system.
- 11 / 14 -
55. An apparatus for wireless communication in a commvmication system, comprising: -
at least one processor, configured to:
receive, via a first cell only, and decapsulate a system information block message with first
information encapsulated in, the first information comprising information indicating that there is
a change in system information relevant to the apparatus,
wherein the first cell is one of cells to which the apparatus is connected and corresponds to
a component carrier which is being used by the apparatus and is kept in connection with a base
station offhe communication system; and »
a memory coupled to the at least one processor. ^.^—*
56. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
receiving, via a first cell only, and decapsulating a system information block message with
first information encapsulated in, the first information comprising information indicating that
there is a change in system information of a communication system relevant to the machine,
t
wherein the first cell is one of cells to which the machine is connected and corresponds to a
component carrier whicK is being used by the machine and is kept in connection with a base
station of the commvmication system. ^
57. An apparatus for wireless communication in a commimication system, comprising:
at least one processor, configured to:
rfeceive, via a dedicated channel, first information which comprises information indicating
that a cell is to be added to the apparatus and system information relevant for an operation of
adding the cell; and
a memory coupled to the at least one processor.
58. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
receiving, via a dedicated channel, first information which comprises information indicating
that a cell is to be added to the machine and system information of a communication system
- 12 / 14 -
' A • -^
j .'reM||nt for an operation ofadding the cell. i; r.^
. i« -
59. An apparatus fo^ wireless communication in a conmiunication system, comprising:
''',
at least one processor, configured to:
receive, via a first cell, first information v^Mch comprises information indicating that a cell
is to be added to the apparatus and system information relevant for an operation of adding the
cell, wherein the first cell is one of cells to which the apparatus is connected and corresponds to a
component carrier which is being used by the apparatus and is kept in connection with a base
station of the communication system; and •
a memory coupled to the at least one processor. .,1^—*
60. A non-transistory machine-readable medium storing code that causes a machine to
execute the code for:
receiving, via a first cell, first information which comprises information indicating that a
cell is to be added to the machine and system information of a communication system relevant
for an operation of adding the cell, wherein the first cell is one of cells to which the machine is
connected and corresponds to a component carrier which is being used bV the machine and is
kept in connection with a base station of the communication system.
/ . • . ' ••
V
1
]
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Dated this 02/01/2013 l\hji^^\Mh^Lu^
[NEHA SRIVASTAVA]
OF REMFRY & SAGAR
ATTORNEY FOR THE APPLICANT[S]
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