Description
Title of Invention
APPARATUS AND METHOD
Tecl~nicalF ield
[OOOl]
The present disclosure relates to an apparatus and a method.
10 Background Art
[0002]
The multimedia broadcast multicast service (MBMS) has been standardized
in the 3rd generation partnership project (3GPP). The MBMS allows broadcast
services or multicast services to be provided for tenninal device devices in a mobile
15 communication network. Various technologies have been developed with respect to
the MBMS.
[0003]
For example, Non-Patent Literature I discloses control infonnation allowing
reception and acquisition of data to be broadcast or multicast in the MBMS (MBMS
20 session).
Citation List
Non-Patent Literature
[0004]
25 Non-Patent Literature 1: 3GPP TS 36.33 1 V11.5.0 (2013-09) LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control
(RRC); Pl.otocoI Specification
Summary of Invention
30 Technical Problem
[0005]
Howevel; in the technology disclosed in Non-Patent Literatore I , a load
related to MBMS for a terminal device snpporting carrier aggregation nlay increase.
More specifically, for example, in the technology disclosed in Non-Patent Literature
1 , the control infor~nation enabling the reception and acquisition of data to be
5 broadcast or multicast in the MBMS is transmitted using each component carrier.
Thus, the terminal device, when using a plurality of component carriers, acquires the
control information transmitted using each of the plurality of component carriers.
In addition, the terminal device acquires the control information each time the
component carrier to be used is changed. In this way, a load on the terminal device
10 may increase.
[0006]
Thus, it is desirable to provide a mechanism that makes it possible to reduce
the load related to MBMS for the tenninal device supporting carrier aggregation.
15 Solution to Problem
[0007]
According to the present disclosure, there is provided an apparatus
including: an acquisition unit configured to acquire specific information used to
specify a physical multicast channel (PMCH) of hvo or tnore component carriers
20 including a first coniponent carrier; and a control unit configured to control
transmission of the specific information on the first component carrier.
[OOOS]
According to the present disclosure, there is provided a method including:
acquiring specific information used to specify a PMCN of h o or tnore component
25 carriers including a first conlponent carrier; and cotitrolling transmission of the
specific information on the first component carrier by a processor.
[0009]
According to the present disclosure, there is provided an apparatns
including: an acquisition unit configured to acquire specific information transmitted
30 on a first component carrier by a base station, the specific information being used to
specify a PMCH of hvo or more component carriers including the first component
carrier; and a control unit configured to specif>{ a PMCH of a cotnponent carrier
included in the two or more component carriers based otl the specific information.
Advantageous Effects of Invention
5 [OOIO]
According to the present disclosure as described above, it is possible to
reduce the load related to MBMS for the terminal device supporting carrier
aggregation. Note that, the above-described advantageous effects are not
necessarily litnited thereto, but any of the effects described herein or other effects
10 that can be understood from the present disclosure may be achieved in combination
with or instead of the above-described effects.
Brief Description of Drawings
[OOII]
15 [FIG. 11 FIG. 1 is a diagram illustrated to describe an example of the technique for
specifying a MCCH.
[FIG. 21 FIG. 2 is a diagram illustrated to describe an example of the technique for
specifying a PMCH.
[FIG. 31 FIG. 3 is a diagran~ illustrated to describe an example of the technique for
20 specifying a radio resource allocated to each MBMS session.
[FIG. 41 FIG. 4 is a diagram illustrated to describe an example of a first use case for
MBMS sessions.
[FIG. 51 FIG. 5 is a diagram illustrated to describe an example of a second use case
for MBMS,sessions. .
26 [FIG. 61 FIG. 6 is a diagratn illustrated to describe an example of a third use case for
MBMS sessions.
[FIG. 71 FIG. 7 is a diagram illustrated to describe an example of the schematic
configuration of a con~n~unicatiosnys tem according to an embodiment ofthe present
disclosure.
30 [FIG. 81 FIG. 8 is a block diagratn illustrating an exemplary configuration of a base
station according to the first embodiment.
[FIG. 91 FIG. 9 is a diagram illustrated to describe a first example of the SIB 13
including MCCH scheduling infournation for two or more CCs.
[FIG. 101 FIG. 10 is a diagram illustrated to describe a second example of the SIB 13
including MCCH scheduling infon~iationf or two or more CCs.
5 [FIG. 1 I ] FIG. 11 is a diagram illustrated to describe a third exatnple of the SIB 13
including MCCH scheduling information for two or more CCs.
[FIG. 121 FIG. 12 is a diagratn illustrated to describe a fourth example of the SIB 13
including MCCH scheduling infonnation for two or inore CCs.
[FIG. 131 FIG. 13 is a diagram illustrated to describe a first example of the radio
10 frame and subfranie in which an MCCH is located.
[FIG. 141 FIG. 14 is a diagram illustrated to describe a second example of the radio
frame and subframe in which an MCCH is located.
[FIG. 151 FIG. 15 is a block diagram illustrating an exemplary configoration of a
tertninal device according to the first embodiment.
15 [FIG. 161 FIG. 16 is a flo\vchart illustcating schematically an exemplary procedure of
a communication cot~tropl rocess by a base station according to the first embodiment.
[FIG. 171 FIG. 17 is a flowchart illustrating schematically an exemplary procedure of
a communication control process by the terminal device according to the first
embodiment.
20 [FIG. 181 FIG. 18 is a diagram illustrated to describe an example of the SIB 13
including notification information for two or more CCs.
[FIG. 191 FIG. 19 is a block diagram illustrating at1 exemplary configuration of a base
station according to a second embodiment.
[FIG. 201 FIG. 20. is a diagram illustrated to describe an example of MBSFN area
25 configuration information.
[FIG. 211 FIG. 21 is a diagram illustrated to describe an example of a subfiame in
which a PMCH is located.
[FIG. 221 FIG. 22 is a diagram illustrated to describe a first example of the
transmission on an MCCH of MBSFN area configuration infonnation for two or
30 more CCs.
[FIG. 231 FIG. 23 is a diagram illustrated to describe a second example of the
transmission on an MCCI-1 of MBSFN area configoration information for two or
more CCs.
[FIG. 241 FIG. 24 is a diagram illustrated to describe a third example of the
transtnission on an MCCH of MBSFN area configuration information for two or
5 more CCs.
[FIG. 251 FIG. 25 is a diagram illustrated to describe a fourth example of the
transmission on an MCCH of MBSFN area configuration information for two or
more CCs.
[FIG. 261 FIG. 26 is a block diagram illustrating an exemplary configuration of a
10 terminal device according to the second embodiment.
[FIG. 271 FIG. 27 is a flowchart illustrating schematically an exemplary procedure of
a communication control process by a base statio~i according to the second
embodiment.
[FIG. 281 FIG. 28 is a flowchart illustrating schematically an exemplary procedure of
15 a communication control process by the terminal device according to the second
emboditnent.
[FIG. 291 FIG. 29 is a diagram illustrated to describe a first example of an MBSFN
area configuration message including one or more pieces of PMCH allocation
information.
20 [FIG. 301 FIG. 30 is a diagram illustrated to describe a second example of an MBSFN
area configuration message including one or more pieces of PMCH allocation
information.
[FIG. 311 FIG. 31 is a diagram illustrated to describe a third example of an MBSFN
area configuration-message including one or more pieces of PMCN allocation
25 information.
[FIG. 321 FIG. 32 is a diagram illustrated to describe a fourth example of an MBSFN
area configaration message including one or more pieces of PMCH allocation
information.
[FIG. 331 FIG. 33 is a diagram illustrated to describe an example of the transtnissiofl
30 on an MCCH of an MBSFN area configuration message including one or more
pieces of PMCI-I allocation information.
[FIG. 341 FIG. 34 is a diagram illustrated to describe a first exanlple of MBSFN area
configuration infonilation incloding infomiation that indicates a tilultiple CC PMCH.
[FIG. 351 FIG. 35 is a diagram illustrated to describe a second exatnple of MBSFN
area configuration iclfonnation including infonnation that indicates a multiple CC
5 PMCI-I.
[FIG. 361 FIG. 36 is a diagram illustrated to describe a first example of the multiple
CC PMCH.
[FIG. 371 FIG. 37 is a diagram illustrated to describe a second example of the
tnultiple CC PMCH.
10 [FIG. 381 FIG. 38 is a block diagram illustrating a first example of a schetnatic
configitration of at1 eNB.
[FIG. 391 FIG. 39 is a block diagram illustrating a second exatnple of a schematic
configuration of a11 eNB.
[FIG. 401 FIG. 40 is a block diagram illustrating an example of a schematic
15 configutation of a smartphone.
[FIG. 411 FIG. 41 is a block diagram illustrating an exatnple of a schematic
configoration of a car navigation apparatus.
Description of Embodiments
20 [0012]
Hereinafter, (a) preferred etnbodiment(s) of the present disclosure will be
described in detail with reference to the appended drawings. In this specificatiotl
and the appended drawings, stroctural elements that have substantially the same
functiot~a ud structlzrewe denoted with the same reference numerals, and repeated
25 explanation of these structoral eleuletlts is omitted.
[0013]
The description will be given in the following order.
1. Introduction
2. Schematic Configuration of Communication System
3. First Embodiment
3.1. Configuration of Base Station
3.2. Configuration ofTerminal Device
3.3. Processing Procedure
3.4. Modification
4. Second Embodiment
4.1. Configuration of Base Station
4.2. Confignration of Terminal Device
4.3. Processing Procedure
4.4. First Modification
4.5. Second Modification
5. Application Example
5.1. Application Example regarding Base Station
5.2. Application Example regarding Terminal Device
6. Conclusion
[0014]
15 <>
General description regarding MBMS and consideration of MBMS in the
case where carrier aggregation is supported will be first described with reference to
FIGS. 1 to 6.
[0015]
20 (General Description regarding MBMS)
- MBMS Session
One program to be broadcast or multicast is referred to as MBMS session.
The MBMS session is mapped to a physical multicast channel (PMCI-1) that is a
physical channel.for the MBMS.
25 [0016]
- MBSFN
The MBMS over a single frequency network (MBSFN) service area is a
region where one MBMS service is provided. In addition, MBMSFN service area
is a region that constitutes a single fi'equency network (SFN). Up to eight MBSFN
30 service areas may be set in one evolved Node B (eNB).
[0017]
Tlie SFN is the technology in which a plurality of cNRs transmit the same
downlink signal at the satile time and at tlie same freqi~eticy and UE syntliesizes
these downlink signals by regarding the downli~iks ignals fro111 the plurality of eNBs
as reflected waves. This improves the signal strength. In the case of broadcasting,
5 the reception is necessary to be performed for widely dispersed terminal devices, and
thus such SFN is used.
[OO 1 81
-Channel
Two logical channels, a multicast transport channel (MTCH) and a inulticast
10 control channel (MCCH) are provided for tlie MBMS. In addition, the physical
channel called a physical multicast chanuel (PMCH) is provided for the MBMS.
Both the MTCI-1 and MCCN are mapped to the PMCH via a multicast channel
(MCT) serving as a transport channel.
[0019]
15 In the PMCH, a long cyclic prefix (CP) called Extended CP is transmitted.
This is intended to configure the SFN. In other words, this allows a terminal device
to synthesize downlink signals frotn multiple eNBs.
[002O]
A subframe for the MBSFN iticludes a physical downlink control chantlel
20 (PDCCH) portion and a physical downlink shared clianncl (PDSCH) portion. The
PDCCH portion in the subfratne is used to convey uplink-scheduling infortnation of
a nonnal subframe, not used for MBMS. On the other hand, the PDSCN portion in
the subfiatne is used for MBMS. In other words, the PDSCH portion in the
snbfratne becomes the PMCH.
25 [0021]
Ill the PMCH, both the MCCH and MTCH are transmitted, and tnulticast
channel (MCH) scheduling infor~iiation (MSI: MCH schedulitlg information)
generated as media access control (MAC) signaling is also transmitted. The MSI is
infortnation indicating which of subfra~iiesin tlie PMCH is mapped to each MBMS
30 session (or each MTCH). Tlie MSI is transmitted in the first sobfianie of PMCH.
[0022]
- MBMS Scheduling
The UE can receive a desired program (MBMS session) only if a radio
resource to be used for transmission of the desired progt.am is specified. Thus, the
UE specifies the radio resource based on the in for ma ti or^ provided from the eNB. A
5 technique for specifying the radio resource will be described with reference to FIGS.
I to3.
[0023]
FIG. 1 is a diagram illustrated to describe an example of the technique for
specifyiug an MCCH. Referring to FIG. 1, a system information block (SLB) 13
10 includes MCCH scheduling infonnation. Specifically, the MCCH scheduling
information includes an MCCH offset and an MCCH repetition period. A radio
frame in which an MCCH is located is specified from these pieces of information.
111 addition, the MCCH scheduling information contains subfra~ne allocatiotl
information. From this information, a subframe in which MCCH is located is
15 specified. In this way, the MCCH is specified from the MCCH scheduling
information included in the SIB 13.
[0024]
FIG. 2 is a diagram illustrated to describe an example of the technique for
specifying a PMCH. Referring to FIG. 2, in the MCCH, an MBSFN area
20 configuration message is transmitted. The MBSFN area configuration message
includes comnlon subframe allocation, a cornmoll subframe allocatiotl period, and a
PMCH information list. The colnlnon subfratne allocation indicates a subfra~nef or
the MBSFN. In addition, the common subframe allocation period indicates a period
of time at which a subframe indicated by the common subframe allocatio~l is
25 allocated to the PMCH. In other words, subframes (e.g., 20 subfiames) to be
allocated to the PMCH are specified from the common sobfiatne allocation and the
common subframe allocatio~l period. Furthennore, the PMCI-1 infonnation list
indicates a subframe to be allocated to each PMCH (e.g., each of PMCHs 1 to 3).
Tile subframe is allocated to up to 16 PMCHs. 111 addition, the PMCH infornlation
30 list further indicates the MTCH and the MBMS session that are mapped to each
PMCH. Up to 30 MBMS sessions are mapped to up to 16 PMCHs. In one
example, MBMS sessions I to 4 are mapped to PMCH 1. MBMS sessions 5 and 6
may be mapped to PMCH 2. Thus, the PMCH, and the MTCH and MBMS session
mapped to the PMCH are specified from the MBSFN area configuration message
transmitted on the MCCH. The comtuon subfiame allocation in the MBSFN area
5 configuration message may be substituted by MBSFN subflame configuration
included in SIB 2.
[0025]
FIG. 3 is a diagram illustrated to describe an example of the technique for
specifying the radio resource allocated to each MBMS session. Referring to FIG. 3,
10 the PMCH includes MSI in a subfia~ne at the head of the PMCH. The MSI
indicates a radio resource (e.g., subframe) to which each of the MBMS sessions (e.g.,
MBMS sessions 1 to 4) is mapped. Thus, the radio resource allocated to each
MBMS session is specified &om the MSI transmitted through the PMCH.
[0026]
15 -Target UE of MBMS
The MBMS is provided for not only a UE in the radio resource control
(RRC) connected mode but also a UE in the RRC idle [node. In other words, both
the UE in the RRC connected mode and the UE in the RRC idle mode can receive
and acquire MBMS sessions.
20 [0027]
- Modulation and Coding Sehetne
The modulation and coding scheme (MCS) can be changed by a multitnedia
broadcast multicast coordination entity (MCE). However, the MCS is not changed
frequently it1 broadcasting. Thus, in one example, a hard-coded MCS is used.
25 [0028]
- Feedback ltlformation
In MBMS for LTE, there is no feedback information from the UE.
Although there is a mixed mode in which both normal communication and MBMS
are performed, feedback inforination regarding MBMS is not determined on the
30 standard even in the rnixed mode.
[0029]
(Consideration of MBMS in case when Carrier Aggregation is st~pported)
- Use Case
In the case where the carrier aggregation is supported, a plurality of
component carriers (CCs) may be used. For example, an eNB in a small cell can
6 use a plurality of CCs. For the transmission of MBMS session when a plurality of
CCs are used, several use cases are considered. Such use cases will be described
below with reference to FIGS. 4 to 6.
[0030]
FIG. 4 is a diagram illustrated to describe an example of a first use case for
10 an MBMS session. Referring to FIG. 4, in one example, five CCs, i.e. CC 1 to CC 5
are used, and the MBMS sessions are transmitted on each respective colnponent
carrier of CC I to CC 5. For example, MBMS session 1 is transmitted on CC 1, and
MBMS session 4 is transmitted on CC 4. For example, as described above, MBMS
sessions are transmitted on each respective CC. In such a case, for example, the UE
16 receives MCCH scheduling information, an MBSFN area configuration message,
MSI, and other information on different CCs for receiving different MBMS sessions.
[0031]
FIG. 5 is a diagram illustrated to describe an example of a second use case
for an MBMS session. Referring to FIG. 5, in one example, five CCs, i.e. CC I to
20 CC 5 are used, and the same MBMS session is transmitted on each respective
component carrier of CC 1 to CC 5. In other words, MBMS session 1 is transmitted
on all of CC 1 to CC 5. For example, as described above, the same MBMS session
is transmitted on each respective CC. Accordingly, even if CC used by UE changes
with a change in the comtnunication quality, the UE can receive the same MBMS
25 session without interruption. In such a case, for cxample, when a CC used by the
UE is changed, the UE receives MCCH scheduling information, an MBSFN area
configuration tnessage,~MSI, and other infonnation on a new CC for receiving the
same MBMS session.
[0032]
30 FIG. 6 is a diagram illustrated to describe an example of a third nse case for
at1 MBMS session. Referring to FIG. 6, in one example, five CCs, i.e. CC 1 to CC 5
are used, and individual parts of the same MBMS session are transmitted on the
respective component carriers, CC I to CC 5. For example, MBMS session 1
includes palls 1 to 5. The pall I of the MBMS session 1 is transmitted on the CC I ,
and the part 4 of the MBMS session 1 is transmitted on the CC 4. For example, as
5 described above, individual parts of the same MBMS session are transmitted on the
respective CCs. Thus, for example, the UE can receive an MBMS session \vith
large data size. In such a case, the UE receives MCCH sclleduling information, an
MBSFN area configuration message, MSI, and other information on the respective
CCs for receiving individual parts of the MBMS session.
10 100331
- UE Operation for each CC
An example of the operation of UE for each CC will be described.
100341
(I) UE achieves the kequency synchronization and time synchronization
15 with CC.
[0035]
(2) The UE acquires SIB 2 transmitted on CC. The SIB 2 includes
MBSFN subkame configuration that indicates a subframe for MBSFN. The UE
specifies the sobkame for MBSFN fro111 the SIB 2. This allows the UE to
20 recognize that a cyclic prefix (CP) for MBSFN is used in the PDSCH portion of the
subkame for MBSFN.
100361
(3) The UE acquires SIB 13 transmitted on CC. Then, the UE specifies an
MCCN from the MCCH scheduling infonnation included in the SIB 13. In other
25 words, the UE specifies a radio fi.anle and subframe in which the MCCH is located.
[0037]
(4) The UE acquires the MBSFN area configuration message transmitted on
the MCCH.
[0038]
30 (5) The UE specifies the subfiame for MBSFN fiotn the comtnon subkatne
allocation and cotnmon subframe allocation period included in the MBSFN area
configuratiofl message. The subkame for MBSFN may be specified kom the SIB 2
in the above iten1 (2).
[0039]
(6) The UE specifies a PMCH to which a desired MBMS sessiot~is mapped
5 from the PMCH information list included in the MBSFN area configuration message.
hi other words, the UE specifies a subfiatne to be allocated to the PMCH to which a
desired MBMS session is mapped.
[0040]
(7) The UE specifies a radio resource (subfixne) to \vhich the desired
10 MBMS is mapped, kotn the MSI transmitted on the PMCH to which the desired
MBMS session is mapped.
[0041]
(8) The UE receives and acquires the desired MBMS session through the
specified radio resource (subkame).
15 [0042]
The operations of item (1) to (8) as described above are performed for each
CC.
[0043]
<<2. Schematic Configuration of Communication System>>
20 Subsequently, the schematic configuration of a cotnmunication system I
according to an embodiment of the present disclosure will be described with
reference to FIG. 7. FIG. 7 is a diagram illustrated to describe an example of the
schematic configuration of the comtnunication system I according to the present
* embodiment: Referring to FIG. 7, the communication system 1 is configured to
25 include a base station 100 and a terminal device 200. For example, the
comlnunication system I is a system according to LTE, LTE-Advanced, and other
communication standards equivalent thereto.
[0044]
The base station 100 communicates wirelessly with the tem~inal device 200
30 located within a cell 10. In addition, the base station 100 supports the carrier
aggregation. 111 other words, the base station 100 can use a plurality of compot~eot
carriers (CCs) simultaneously to communicate wirelessly with one terminal device
200.
[0045]
The terminal device 200, when entering the area covered by the cell 10,
5 communicates wirelessly with tRc base station 100. In addition, the ternlinal device
200 suppotts the carrier aggregation, and thus can use a plurality of CCs
sim~lltaneouslyto communicate wirelessly with the base station 100.
[0046]
Although FIG. 7 illustrates only one base station 100 and one terminal
10 device 200, it will be understood that the comn~unication system I tnay be
configured to include two or tnore base stations 100 and/or two or more terminal
devices 200.
[0047]
<<3. First Embodiment>>
15 Subsequently, a first embodiment of the present disclosure will be described
with reference to FIGS. 8 to 18.
[0048]
In the embodiment of the present disclosure, the base station 100 transmits
specific information on a first CC. The specific infornlation is used to specify a
20 PMCH of two or more CCs including the first CC. Particularly, in the first
embodiment, the specific information is MCCH scheduling information for the two
or more CCs. In other words, the base station 100 transmits the MCCH scheduling
information for the two or more CCs on the first CC included in the two or Inore CCs.
This makes it possible to reduce, for example, the load on the MBMS for the
25 tenninal device 200.
[0049]
<3.1. Configuration of Base Station>
The exelnplaty configuration of a base station 100-1 according to the first
embodiment \\fill be first described with reference to FIGS. 8 to 14. FIG. 8 is a
30 block diagram illustrating an exen~plary configuration of the base station 100-1
according to the first embodiment. Referring to FIG. 8, the base station 100-1 is
configured to include an antenna unit 110, a wireless com~nunication nnit 120, a
network communication unit 130, a storage nnit 140, and a processing nnit 150.
[0050]
(Antenna Unit I 1 0)
5 The antenna unit 110 radiates signals, which are outputted by the \\tireless
communication nnit 120, into space as radio waves. In addition, the antenna unit
110 converts the radio waves coming fro111 space into signals and outputs the signals
to the wireless communication unit 120.
[0051]
(Wireless Communication Unit 120)
The wireless communication unit 120 performs wireless communication.
In one example, the wireless communication unit 120 transmits a downlink signal to
a terminal device 200-1 located within the cell 10, and receives an uplink signal from
the terminal device 200-1 located within the cell 10. In addition, the wireless
15 cotninunication unit 120 performs wireless comtnunication on each of a plurality of
CCs.
[0052]
(Network Conitnunication Unit 130)
The network cotn~nunication unit 130 communicates with other nodes. In
20 one example, the network co~ntnt~nicatiounn it 130 comtnunicates with other base
stations. In addition, the net\vork communication unit 130 communicates with a
core net\vork node (e.g., sewing gateway (S-GW) and mobility management entity
(MME)).
[0053] ~.-.,."
25 (Storage Unit 140)
The storage unit 140 stores a program and data used to operate the base
station 100-1 in a temporary or permanent manner.
[0054]
(Processing Unit 150)
The processing unit 150 implements various functions of the base station
100-1. The processing unit 150 is configured to include an information acquisition
unit 15 1 and a comnlunication control nnit 153.
[OOSS]
(Information Acquisition Unit 15 1)
The information acquisition unit I51 acqnires specific infornlation nsed to
5 specify a PMCH of two or more CCs including the first CC.
[0056]
Particularly, in the first embodiment, the specific information is the
scheduling information of MCCI-I (hereinafter referred to as "MCCH scheduling
infonnation") for the h o or more CCs. In other words, the infor~nationa cquisition
10 unit 151 acql~iresth e MCCH scheduling information for the hvo or more CCs. The
MCCH scheduling information is, for example, information indicating a radio frame
and sobfian~ew here the MCCH is located.
[0057]
- System Information Block (SIB)
15 In one example, the information acquisition unit 151 acquires a
predete~mined system infonnation block (SIB) that includes the MCCH scheduling
information for the two or more CCs. The pt.edetermined SIB is, for example, an
SIB for the first CC. In addition, the predetermined S1B is, for example, an SIB 13
(also called SIB type 13).
20 [OOSS]
- Individual MCCH Scheduling Information
The MCCH scheduling information for the hvo or more CCs contains one or
more pieces of individual MCCH scheduling information. In addition, each of the
one or more pieces of individual MCCH scheduling inforn~ation is MCCH
25 scheduling information for at least one CC of the hvo or more CCs.
[0059]
Furthel; for example, the predetermined SIB includes the one or more pieces
of individual MCCH scheduling information and identification information for a CC
that corresponds to each of the one or more pieces of individual MCCH scheduling
30 information. The identification information is, for example, the cell identity (ID).
For example, this allo\\fs the terlniaal device 200-1 to identify which of CCs is
cor~espondcd to the individual MCCI-I scheduling infonnation within the
predeterniined SIB.
[0060]
- Individual MCCH Scheduling Information for each CC
5 For exa~nplet,h e MCCH schedoling infonnation contains individual MCCH
scheduling infolniation for each of the hvo or more CCs. In other words, the
infonnation acquisition unit 151 acquires the predetermined SIB that includes
individual MCCH scheduling information for each of the two or Inore CCs. The
detailed description will be given below on this point with reference to FIG. 9.
10 [0061]
FIG. 9 is a diagram illustrated to describe a first example of SIB 13 that
includes the MCCH scheduling information for hvo or more CCs. Referring to FIG.
9, the SIB 13 for CC1 is illustrated. In this example, the base station 100-1 uses CC
I to CC 5, and the SIB 13 includes individual MCCH scheduling information for
15 each of the CC 1 to CC 5. In addition, the SIB 13 includes a cell ID of the CC
corresponding to each of five pieces of individual MCCH scheduling information.
The cell ID of CC is associated with the individual MCCH scheduling infolmation
for the CC. In other words, the cell ID ofthe CC 1 is associated with the individual
MCCH scheduling infonnation for the CC 1. In addition, the cell ID of the CC 3 is
20 associated with the individual MCCH scheduling infomation for the CC 3.
[0062]
Thus, for example, it is possible to perform scl~edulingo f MCCH for each
CC.
[0063] . Bs
25 The predetermined SIB (e.g., SIB 13) is not necessary to include the MCCH
scheduling information for all the CCs (e.g., CC 1 to CC 5) used by the base station
100-1, but may include the MCCH scheduling infor~nation for some of the CCs. In
other words, the hvo or more CCs are not necessary to be all the CCs (e.g., CC 1 to
CC 5), but may be some of thetn. 111 addition, some of the CCs nlay be different
30 depending on the type of CCs on which the MCCH scheduling infonnation is
transmitted. The detailed description will be given below on this point with
reference to FIG. 10.
[0064]
FIG. I0 is a diagram illustrated to describe a second exatuple of the SIB 13
that includes the MCCH scheduling information for two or more CCs. Referring to
5 FIG. 10, the SIB 13 for CC 1 and the SIB 13 for CC 5 are illustrated. In this
example, the base station 100-1 uses the CC 1 to CC 5, and the SIB 13 for CC I
includes the individual MCCH scheduling infonnation for each of the CC 1 to CC 3.
hl addition, the SIB 13 for CC 5 includes the individual MCCH scheduling
information for each of the CC 3 to CC 5. In this way, the MCCH scheduling
10 information for all the CCs nsed by the base station 100-1 is not necessarily included
in the SIB 13 for each CC (LC. SIB 13 transmitted on each CC).
[0065]
- Common MCCH Scheduling Information between CCs
The one or more individual MCCI-I scheduling information may contain
15 MCCH scheduling information that is common behveen at least two CCs that are
incloded in the two or more CCs. In other words, the information acquisition unit
151 may acquire the predetermined SIB including the MCCH scl~edulingin fonnation
that is common between the at least two CCs. The detailed description will be
given below on this point with reference to FIGS. 11 and 12.
20 [0066]
FIG. 11 is a diagram illustrated to describe a third example of the SIB 13
that includes the MCCH scheduling information for two or more CCs. Referring to
FIG. 11, the SIB 13 for CC I is illustrated. In this example, the base station 100-1
uses the CC 1 to CC 5, and the scheduling of MCCH is tlle same among the CC I to
25 CC 5. Thus, the SIB 13 includes MCCH scheduling information that is colnnlon
among the CC 1 to CC 5. In addition, the SIB 13 includes cell IDS of the CC 1 to
CC 5 that correspond to the MCCI-I scheduling information. The cell IDS of the CC
1 to CC 5 ace associated with the MCCH scheduling information that is common
among the CC I to CC 5.
30 [0067]
FIG. 12 is a diagram illustrated to describe a fourth example of the SIB 13
that includes the MCCH scheduling information for h o or more CCs. Referring to
FIG. 12, the SIB 13 for CC 1 is illustrated. In this exatnple, the base station 100-1
uses the CC 1 to CC 5, and the scheduling of MCCH is the satne between the CC 1
and CC 2. Thus, the SIB 13 includes MCCH scheduling information that is
5 common between the CC 1 and CC 2. In addition, the SIB 13 includes cell 1Ds of
the CC I and CC 2 that correspond to the MCCH scheduling information. The cell
1Ds of the CC I and CC 2 are associated with the MCCH scheduling infom~ationth at
is common between the CC 1 and CC 2.
[0068]
10 In this way, the MCCH scheduling information that is comtnon among CCs
may be used. Thus, for exatnple, information to be transmitted is reduced.
Accordingly, for exatnple, radio resources to be consumed (e.g., radio resource to be
used for SIB) can be reduced. In addition, for example, the power consutnption of
the base station 100-1 can be reduced.
15 [0069]
- Details of Infonnation included in MCCH Scheduling Infonnation
In one example, the MCCH scheduling information includes an MCCH
offset, an MCCH repetition period, and sobfratne allocation information. Thus, for
example, the MCCH is specified. In other words, a radio frame and subframe in
20 which the MCCH is located are specified. The detailed description will be given
below on this point with reference to FIGS. 13 and 14.
[0070]
FIG. 13 is a diagram illustrated to describe a first exanlple of the radio frame
and subframe in which an MCCH is located. Referring to FIG. 13, there are
25 illostrated a plurality of radio frames and 10 subframes, which are included in one
radio fiame of the plurality of radio frames are illustrated. The MCCH repetition
period indicates a period of the radio frame in which the MCCH is located, and the
MCCH offset indicates the starting point of the period. For example, a radio h t n e
of systen~ frame number (SFN) that satisfies the condition of "SFN mod MCCH
30 repetition period = MCCH offset" becomes the radio frame in which the MCCH is
located. In this exatnple, the MCCH repetition period is 6, and the MCCH offset is
0. l'hus, the radio frames with the SFN of 0, 6, 12, ... are tlie radio frames in \vhich
tlie MCCH is located. In this way, the radio frame in which the MCCII is located is
specified fiu~nth e MCCH repetition period and the MCCI-1 offset. In addition, the
subframe allocation information indicates a subframe in which the MCCH is located
5 (in this example, sobframes with the subfra~iie numbers of 1 and 6) alllong 10
subframes included in the radio frame. Thus, the subfratne in which the MCCH is
located is specified from the subframe allocation infonnation.
[0071]
FIG. 14 is a diagram illustrated to describe a second exanlple of the radio
10 frame and subfiarne in which the MCCH is located. Referring to FIG. 14, in this
example, the MCCH repetition period is 3 and the MCCH offset is 2. Thus, radio
frames with the SFNs of 2, 5, 8, 11, 14, 17, ... are the radio frames in which the
MCCH is located. In addition, in this example, the subfratne allocatiotl information
indicates subframes with the subfranie numbers of 3 and 8, and these subfiames are
15 subfra~~ieins which the MCCII is located. In this way, the radio fratne and
subframe in which MCCH is located are specified.
[0072]
The foregoing has described the information acquisition uuit 151
particularly based on the first CC (e.g., CC 1). It will be understood that the
20 information acquisition unit 151 can acquire a predetermined SIB (e.g., SIB 13) for a
different CC (e.g., any of CC 2 to CC 5). Then, the predetermined SLB can include
the MCCH scheduling information for hvo or more CCs that include the other CC.
[0073]
(Cotntnonication Control Unit 153)
25 The communicatio~c~o ntrol unit 153 controls the transmission of the
specific information on the first CC.
[0074]
Particularl); in the first embodiment, for example, the communication
control unit 153 cot~trolsth e transmission of the predetermined SIB on the first CC.
30 As described above, tlie predetermined SIB itlcludes the MCCH scheduling
information for the two or tnore CCs.
[0075]
Specifically, in one example, the cotnmunication control onit 153 controls
the transmission by inapping a signal of the predetermined SIB 13 (e.g., SIB 13) to
the radio resource scheduled to the SIB 13 of the radio resources of the first CC.
5 This allows the SIB 13 to be transmitted on the first CC. In other words, the
MCCJ-I scheduling information for the hvo or more CC is transmitted on the first CC.
[0076]
In another example, the communication control unit 153 may control the
transmission by triggering the transmission of the predetermined SIB on the first CC
10 to control the trat~s~~~issiSopne.c ifically, the comtnunication control anit 153 may
control the transmission by instructing another component in the base station 100-1
(e.g., another component included in the processing unit 150) to transmit the
predetermined SIB on the first CC. This may allow the SIB 13 to be transmitted on
the first CC.
15 [0077]
As described above, the MCCN scheduling information for the two or tnore
CCs including the first CC is traosmittcd on the first CC. For exatnple, this makes
it possible to reduce the load on MBMS for the tenninal device 200-1 that supports
carrier aggregation. More specifically, for example, the terminal device 200-1, even
20 when using two or more CCs, may be configured not to receive and acquire the
MCCH schedllling infonnation on each of the two or more CCs. For example, the
MCCH scheduling infonnation for the two or more CCs can be received and
acquired using one CC. Thus, it is possible to reduce the load on the terminal
device 200-1 to specify the radio resource in which the MCCH is located (i.e. radio
25 frame and subfratiie).
[0078]
In one example, even when CCs for receiving MBMS sessiotls frequently
vary with a change in communication quality of the CC, the tenninal device 200-1 is
not ticccssary to acquire the MCCN scheduling information each time the CC varies.
30 In another example, even when the same MBMS session is transmitted on each CC
as illustrated in FIG. 5 and the terminal device 200-1 receives the MBMS session on
the CC having satisfactory communication qt~ality,t he ter~ninadl evice 200-1 is not
necessary to acquire the MCCH scheduling information on each CC. In still
another example, even when different parts of the same MBMS session are
transmitted on each CC as illustrated in FIG. 6 and the terminal device 200-1 receives
5 the different parts on each CC, the terminal device 200-1 is not necessary to acquire
the MCCI-I scl~edulingin for~nationo n each CC. Thus, it is possible to reduce the
load on the terminal device 200-1.
[0079]
The foregoing has described the cotnmunication control unit 153
10 particularly based on the first CC (e.g., CC 1). It \ \ r i l l be understood that the
communication control unit 153 can control the t~ansmission of a predetermined SIB
on a different CC (e.g., any of CC 2 to CC 5). In addition, the predetermined SIB
can include the MCCH scheduling information for hvo or Inore CCs that include the
other CC.
16 [0080]
<3.2. Configuration of Terminal Device
Next, an exe~nplaryc onfiguration oft he terminal device 200-1 according to
the first embodiment will be described with reference to FIG. 15. FIG. 15 is a block
diagram illustrating the exe~npla~cyo nfiguration of the terminal device 200-1
20 according to the first embodiment. Referring to FIG. 15, the tenninal device 200-1
is configured to include an antenna unit 210, a wireless cotnmunication unit 220, a
storage unit 230, an input unit 240, a display onit 250, and a processing unit 260.
[008 11
(Antmaa~Wflit2 10 )
25 The antenna unit 210 radiates signals, which are outputted by the wireless
com~nunicationu nit 220, into space as radio waves. In addition, the antenna unit
21 0 converts the radio waves coming fio~nsp ace into signals and outpots the signals
to the wireless communication unit 220.
[0082]
30 (Wireless Communication Unit 220)
The wireless communication unit 220 performs wireless connnonication.
In one example, the wireless com~nunication unit 220 receives a downlink signal
froin the base station 100-1 and transmits an uplink signal to the base station 100-1
when the terminal device 200-1 is located within the cell 10.
[0083]
5 (Storage Unit 230)
The storage unit 230 stores a program and data nsed to operate the ternlinal
device 200-1 in a temporary or permanent manner.
[0084]
(Input Unit 240)
10 The input unit 240 receives an operation by the user of the terlninal device
200-1 as an input. Then, the input unit 240 provides a result obtained by the input
for tlle processing unit 260.
[OOS5]
(Display Unit 250)
15 The display unit 250 displays a screen (i.e. picture) of the terminal device
200-1. In one example, the display unit 250 displays the screen under the control
by the processing unit 260 (display control unit 265).
[0086]
(Processing Unit 260)
20 'She processing unit 260 impletnents various functions of the terminal
device 200-1. The processing unit 260 is configured to include an information
acquisition unit 261, a colnmunication control unit 263, and a display contml unit
265.
[0087]
25 (Infortnation Acquisition Unit 261)
The information acqnisition unit 261 acquires the specific inforn~ation,
\vhich is used to specify the PMCI-I of hvo or Inore CCs including the first CC and is
transmitted on the first CC by the base station 100-1.
[OOSS]
30 Particularly, in the first embodiment, the specific information is the MCCH
scheduling infortnation for the hvo or more CCs. In other words, the infom~ation
acquisition unit 261 acquires the MCCH scheduling information for the two or more
ccs.
[0089]
As described above, for example, the MCCH scheduling information is
5 included in the predetermined SIB (e.g., SIB 13), and the infonnation acquisition
unit 261 acquires the MCCH scheduling informatiou included it1 the predetermined
SIB. The predetermined SIB is, for example, the SIB of the first CC.
[0090]
The contents of the MCCH scheduling information are as described
10 previously with reference to the base station 100-1.
[0091]
The foregoing has described the infortnation acquisition unit 261
particularly based on the first CC. It will be understood that the MCCH scheduling
infortnation for two or more CCs including a different CC can be included in the
15 predetermined SIB for the different CC. Then, the infonnation acquisition unit 261
can acquire the MCCH scheduling information that is included in the predetermined
SIB.
[0092]
(Communication Control Unit 263)
20 The communication control unit 263 specifies a PMCI-I of the CC included
in the two or more CCs based on the specific information,
[0093]
Pa~ticularly, in the first embodiment, the specific information is the MCCH
scheduling~information for the two or more CCs. In other words, the
25 communication control unit 263 specifies the PMCH of the CC included in the two
or more CCs based on the MCCH scheduling infonnation for the two or more CCs.
[0094]
More specificall>: for example, the co~nmunication control unit 263
specifies the MCCH of at least one CC of the two or more CCs based on the MCCH
30 schedulillg informatiou for the h o or more CCs. 111 other words, the
co~nmunication control unit 263 specifies the radio frame and subframe in which the
MCCH is located. Then, the co~nmunicationc ontrol unit 263 acquires the MBSFN
area configuration message transmitted on the specified MCCH for each of the at
least one CC. Furthermore, the co~nmi~nicatiocno ntrol unit 263 specifies the
PMCH to which a desired MBMS session is mapped, based on the MBSFN area
5 configuration message. In other words, the commc~nication control unit 263
specifies a subfranle to be allocated to the PMCH to which the desired MBMS
session is mapped. Then, the comn~onicationc ontrol unit 263 acquires the desired
MBMS session that is transmitted on the specified PMCH. In other words, the
co~nmunication control unit 263 specifies a radio resource (subfiatne) to which the
10 desired MBMS session is mapped fro111 the MSI transmitted on ihe specified PMCH,
and acquires the desired MBMS session transmitted through the specified radio
resource.
[0095]
The foregoing has described the cotnmunication control unit 263 based on
15 the MCCH scheduling information for the two or more CCs, which is transmitted on
the first CC. It will be understood that, based on the MCCH scheduling information
for two or more CCs transmitted on a different CC included in the two or more CCs,
the communication control unit 263 can specify the PMCI-1 of the CC included in the
two or Inore CCs.
20 [0096]
(Display Control Unit 265)
The display control unit 265 controls the display unit 250 to display a screen.
For example, the display control unit 265 generates a screen to be displayed by the
display anit.,250 and causes the display unit 250 to display the screen.
26 [0097]
<3.3. Processing Procedure>
Subsequently, an example of a communication control process according to
the first embodiment will be described with reference to FIGS. 16 and 17.
[0098]
30 (Comn~unicationC ontrol Process in Base Station)
FIG. 16 is a flo\\cllart illustrating schematically an exemplary procedure of
a comolunication control process by the base station 100-1 according to the first
e~nbodiment.
[a0991
The information acquisition unit 151 acquires a predetermined SIB (e.g.,
5 SIB 13) that includes the MCCH scheduling information for two or more CCs (S301).
The two or more CCs include the first CC.
[OlOO]
The comtnunication control unit 153 controls the transmission of the
predetermined SIB on the first CC (S303). Then, the SIB 13 is transmitted on the
10 first CC. Then, the process ends.
[OlOl]
(Commonication Control Process in Tenninal Device)
FIG. 17 is a flowchart illustrating scheinatically an exemplary procedure of
a communication control process by the terminal device 200-1 according to the fitst
15 embodiment.
[O 1021
The information acquisition unit 261 acquires the MCCH scheduling
information for hvo or more CCs (S311). More specifically, the hvo or more CCs
include the first CC. The predetermined SIB (e.g., SIB 13) that includes the MCCI-1
20 scheduling information is transmitted on the first CC. The information acquisition
unit 261 acquires the MCCH schedulitlg information that is included in the
predetermined SIB.
[0 1031
Next;~the.cotnt~~onicatiocno ntrol unit 263 specifies an MCCH of at least
25 one CC of the hvo or more CCs based on the MCCH scheduling information (S313).
Then, the commi~nication control urlit 263 acquires the MBSFN area configuration
message transmitted on the specified MCCH with respect to each of the at least one
CC (S3 15).
[0 1041
30 Fu~thel; the communication control unit 263 specifies a PMCH to which a
desired MBMS session is mapped, based on the MBSFN area configuration message
(S317). In other words, tlie communication control unit 263 specifies a subfiame to
be allocated to tlie PMCH to which the desired MBMS session is mapped.
[0 1051
Then, the commotiication control unit 263 acquires the desired MBMS
5 session transmitted on tlie specified PMCH (S3 19). In other words, the
communication control unit 263 specifies a radio resource (subfiame) to w\~hieh the
desired MBMS session is tiiapped from the MSI transmitted on the specified PMCH,
and acquires the desired MBMS session transmitted through the specified radio
resource. Then, the process ends.
10 [0106]
<3.4. Modification>
Next, ~nodificationso f the first embodiment will be described with reference
to FIG. 18. According to tlie modification of the first embodiment, the
predeteniiined SIB (e.g., SIB 13) further includes different information for the two or
15 mot= CCs, in addition to the MCCH scheduling information for the two or Inore CCs.
[0 1071
(Base Station 100-1: Information Acqoisition Unit 151)
- System Infortnation Block (SLB)
In the tnodifieation of tlie first embodiment, the predetermined SIB (e.g.,
20 SIB 13) fi~t-thcir~ lcludesd ifferent information for the two or more CCs.
[0108]
-- Notification Infomation
In one example, the predetennioed SIB fi~tther iticludes notificatioti
infomlation for the ,.hvo or more CC. The notificatiotl infannation notifies the
25 terminal device 200-1 of the location of itifortnatio~l used to indicate a change of tlie
MCCH.
[O 1 091
More specifically, for example, the notification infor~natiotl includes at least
one of a notification indicator and a notification configuration. The tlotification
30 indicator indicates which of PDCH bits is used to notify the terminal device 200-1 of
the change of tlie MCCI-I. 111 addition, the notification configuration indicates a
radio fra~atne and snbfiame nsed to transmit the MCCH information change
notification.
[OI 101
In one example, the notification infonnation contains one or more pieces of
5 individual notification infonnation. In other words, the predetermined SIB includes
the one or more pieces individual notification information. The detailed description
will be given below on this point with reference to FIG. 18.
[Olll]
FIG. 18 is a diagram illustrated to describe an example of the SIB 13 that
10 includes notification inforruation for two or more CCs. Referring to FIG. 18, the
SIB 13 for CCI is illustrated. In this example, the base station 100-1 uses CC 1 to
CC 5, and the SIB 13 includes individual notification information for each of the CC
1 to CC 5. In addition, five pieces of individual notification information are
associated wit11 a cell ID for each corresponding CC.
15 [0112]
Although the example of FIG. 18 is an exatnple in which the predetermined
SIB includes individual notification infonnation for each CC, in another example, the
predetermined SIB ma)' include notification information that is colntnon atnong CCs.
[0113]
20 As described above, the notification infonnation for two or more CCs is
included in the predetermined SIB. This allows, for example, the reduction in the
load on the MBMS for the terminal device 200-1 that supports carrier aggregation.
More specifically, for example, even when two or more CCs are used, it is not
necessary for the tertninal device 200-1 to receive and acquire the notification
26 information for each of the two or more CCs, but can receive and acqnire the
notification infonnation for the t\vo or more CCs on one CC. Thus, it is possible to
reduce the load on the tenninal device 200-1 for specifying the location of
inforn~ationu sed to indicate a change of the MCCH.
[0114]
30 -- Others
In one exa~nplet,h e predetermined SIB finther includes an MBSFN area ID,
non-MBSFN region length, andlor signaling modulation and coding scheme (MCS)
for the two or more CCs, as different information for the two or more CCs. Thus,
for example, tlie load on MBMS for the terminal device 200-1 that supports carrier
aggregation is reduced.
5 [0115]
(Terminal Device 200-1: Information Acquisition Unit 261)
In the modification of the first embodiment, the information acquisition unit
261 further acquires different inforn~ationfo r tlie two or more CCs.
[0116]
10 In one example, as described above, the predetermined SIB includes the
notification information for the hvo or more CCs, and the infonuation acquisition
unit 261 acquires the notification infonnation that is included in tlie predetermined
SIB.
[0117]
15 In addition, the predetermined SIB further includes an MBSFN area ID,
non-MBSFN region length, and/or signaling MCS for the two or more CCs, as
different infortnation for the hvo or more CCs, and the infot~nationa cquisition unit
261 acquires tliese pieces of infor~nation.
[0118]
20 (Terminal Device 200-1 : Information Acquisition Unit 261)
In the modification of the first embodiment, for example, the
colnmunication control unit 263 specifies a location of the information to be used to
indicate a change of an MCCI-I based on the notification information.
[0119] . .-,
25 In addition, for example, the co~umunication control unit 263 specifies the
length of a non-MBSFN region in the MBSFN frame based on the noti-MBSFN
region length. In addition, for example, the communication control unit 263
specifies applicable MCS based on the signaling MCS.
[O 1201
30 <<4. Second Embodi~nent>>
Subsequently, a second embodinlent of the present disclosure \will be
described with reference to FIGS. 19 to 37.
[0121]
In the embodiment of the present disclosure, the base station 100 transmits
specific information on a first CC. The specific infortnation is used to specify a
6 PMCI-I of hvo or more CCs inciuding the first CC. Pai-ticolarly, in the second
embodiment, the specific infomation is MBSFN area configuration information for
the two or more CCs. In other words, the base station 100 transmits the MBSFN
area confignration information for the two or more CCs on the first CC included in
the two or more CCs. This makes it possible to reduce, for example, the load on the
10 MBMS for the terminal device 200.
[0122]
<4.1. Configuration of Base Station>
The exemplary configuration of a base station 100-2 according to the first
embodiment will be first described with reference to FIGS. 19 to 25. FIG. 19 is a
15 block diagram illustrating an exentplary configuration of the base station 100-2
according to the second embodiment. Referring to FIG. 19, the base station 100-2
is configuird to include an antenna unit 110, a wireless communication unit 120, a
network comn~onicationu nit 130, a storage nnit 140, and a processing unit 160.
[0123]
20 For the antenna unit 110, the wireless communication unit 120, the network
communication unit 130, and the storage unit 140, there is no pat-ticular difference
between the first etnbodi~nent and the second embodiment. Thas, in this
description, only the processing unit 160 will be described.
[0 1241
25 (Processing Unit 160)
The processing nnit 160 i~nple~nenvtsa rious functions of the base station
100-2. The processing nnit 160 is configured to include an infomiation acquisition
unit 161 and a communication control unit 163.
[0125]
30 (Information Acquisition Unit 161)
The information acquisition unit 161 acquires specific information used to
specify a PMCH of two or more CCs that includes the first CC.
[0 1261
Particularly, in the second embodiment, the specific information is MBSFN
area configuration information for the hvo or Inore CCs. In other words, the
5 information acqaisition unit 161 acquires the MBSFN area configuratioll information
for the hvo or more CCs.
[0127]
- MBSFN Area Cot~figurationM essage
The MBSFN area configuratiol~ information includes, for example, one or
10 more MBSFN area configuration messages. In addition, each of the one or more
MBSFN area configuration messages is the MBSFN area cot~figaration message for
at least one CC of the two or more CCs.
[0 1281
-- MBSFN Area Cotlfiguration Message for each CC
15 In one example, the MBSFN area configuration infomation includes the
MBSFN area configuration tnessage for each of the hvo or more CCs. In other
words, the infornlation acquisition unit 161 acquires the MBSFN area configuration
message for each of the hvo or more CCs. The detailed description will be given on
this point with reference to FIG. 20.
20 [0129]
FIG. 20 is a diagram illustrated to describe an example of the MBSFN area
configuration information. Referring to FIG. 20, five MBSFN area configuration
messages are illustrated as the MBSFN area configuration information. 111 this
example, the base station 100-2 uses CC 1 to CC 5, and the MBSFN area
25 configuration information includes an MBSFN area configuration tnessage for each
of CC 1 to CC 5.
[0130]
It is not necessary for the MBSFN area configuration information to include
MBSFN area configuration messages for all the CCs used by the base station 100-2,
30 but may include an MBSFN area configuration message for some of CCs. In one
example, the MBSFN area configuration itlfonnatiorl may include the MBSFN area
configuration messages for CC 1 to CC 3, not for CC 1 to CC 5 used by the base
station 100-2. In other words, it is not necessary for the two or more CCs to be all
the CCs (e.g., CC 1 to CC 5), but may be sotile of them (e.g., CC 1 to CC 3). In
addition, these some of CCs lnay be changed depending on the type of CC on which
5 the MBSFN area configuration information is transmitted.
[0131]
-- Cotntnon MBSFN Area Configuration Message between CCs
The one or Inore MBSFN area configuration messages may include an
MBSFN area configuration message that is common between at least two CCs
10 included in the two or more CCs. In other \vords, the infor~nation acquisition unit
161 may acquire the MBSFN area cotifigaration message that is common behveeil
the at least two CCs.
[0132]
In one example, tile base station 100-2 uses CC 1 to CC 5, and the same
15 MBSFN area configuration message rnay be used among CC 1 to CC 5. In this case,
the information acquisition unit 161 may acquire the MBSFN area configuration
message that is cotnlnon atnong CC 1 to CC 5. Alternatively, the same MBSFN
area configuration message may be used between at least two CC (e.g., CC 1 and CC
2). In this case, the information acquisition unit 161 may acquire an MBSFN area
20 configuration message that is common beheen the at least two CCs (e.g., CC 1 and
CC 2) and an MBSFN area configuration message for each of the remaining CCs
(CC 3 to CC 5).
[O 1331
- Details of Information included in MBSFN Area Configuratiotl Message
25 In one example, the MBSFN area configuration message includes coulnlon
subframe allocation, a common subfra~ne allocation period, and a PMCI-I
information list. Accordingly, for example, the PMCH is specified. In other
words, a subframe in which the PMCH is located is specified. The detailed
description will be given on this point with reference to FIG. 21.
30 [0134]
FIG. 21 is a diagram illustrated to describe an example of a subframe in
which the PMCH is located. Referring to FIG. 21, the MBSFN area configuration
message for CC I is illustrated. The MBSFN area configuration lnessage inclodes
common subfsa~ame allocation, a common subfsame allocation period, and a PMCI-1
itlformation list. Tlie cotninon subfsa~ne allocation indicates a sobframe for
5 MBSFN. In addition, the comlilon subfiatne allocation period indicates a period
duriog which a subfratue indicated by the common subfiame allocation is allocated
to the PMCH. In other \\fords, subframes to be allocated to the PMCH (e.g., 20
subfsan~es) are specified from the common subfsame allocation and the common
subfsatame allocation period. Further, tlie PMCI-I information list (e.g., PMCH
10 configuration) indicates a sobfsa~ne to be allocated to each of the PMCHs (e.g.,
PMCHs 1 to 3). In this example, the PMCH infortnation list indicates that, among
20 subfsatnes, the first to seventh subfsa~nesa re allocated to PMCH 1, the eighth to
eleventh subfsames are allocated to PMCH 2, and tlie hvelfth to hventieth subframes
are allocated to PMCH 3. The PMCH infonnation list (e.g., MBMS session
15 infonnation list) fi~ttlier indicates an MBMS session (or MTC1-1) to be mapped to
each of the PMCHs (PMCNs 1 to 3).
[0135]
The foregoing has described the information acquisitiotl unit 161
particularly based on the first CC (e.g., CC I). It will be onderstood that the
20 information acquisition unit 161 can acquire the MBSFN area configuration
information for hvo or more CCs including different CCs (e.g., CC 2 to CC 5).
[OI 361
(Communication Control Unit 163)
The cotu~nunication control unit 163 controls the transmission of the
25 specific information on the first CC.
[0137]
Particularly, in the second emboditnent, as described above, the specific
i~ifonnation is the MBSFN area configoration infostnation for the two or inore CCs.
In other words, the communication control unit 163 controls the transmission of tlie
30 MBSFN area configuration infonnation on the first CC.
[0138]
-Transmission on MCCH
In one example, ,the communication control nnit 163 controls the
transtnission of the MBSFN area confignration information on the MCCH of the first
CC.
5 [0139]
As described above, for example, the MBSFN area configuration
information includes one or more MBSFN area confignration messages. 111 other
words, the communication control unit 163 controls the transmission of the one or
more MBSFN area configuration messages on the MCCH of the first CC.
10 [0140]
In addition, tlle information to be transmitted on the MCCH includes the one
or Inore MBSFN area configuration tnessages and the identification information of
the CC that corresponds to each of the one or more MBSFN area configuration
messages. The identification information is, for example, a cell ID. Thus, for
15 exatnple, the terminal device 200-2 can identify which of CCs is corresponded to
individual MBSFN area confignration message transmitted on the MCCH.
[0141]
-- MBSFN Area configuration Message for each CC
As described above, for example, the MBSFN area confignration
20 inforlnation includes the MBSFN area confignration tnessage for each of the two or
more CCs. The detailed description of the transmission on the MCCH in such a
case will be given with reference to FIG. 22.
[0 1421
FIG:- 22 is a diagram illustrated to describe a first exatnple of the
25 transtuission on the MCCH of MBSFN area confignration infonnation for hvo or
more CCs. Referring to FIG. 22, the MCCI-1 of CC 1 is illustrated. In this
example, the base station 100-2 uses CC 1 to CC 5, and the MBSFN area
configuration information includes an MBSFN area confignration message for each
of CC 1 to CC 5. Thus, the MBSFN area configuration message for each of CC 1
30 to CC 5 is transmitted on the MCCH. In addition, a cell ID of the CC
corresponding to each of five MBSFN area confignration nlessages is also
transmitted on the MCCH. The cell ID o f CC is associated with the MBSFN area
configuration message for the CC. In other wol.ds, the cell ID of the CC I is
associated with the MBSFN area configuration lncssage for the CC 1. In addition,
the cell ID of the CC 3 is associated with the MBSFN area configuration mcssage for
5 the CC 3.
[O 1431
This makes it possible to determine, for example, a PMCH for each CC.
More specifically, for example, it is possible to determine, for each CC, a sobframe
to be allocated to the PMCH, and an MBMS session or MTCH mapped to the PMCH.
10 101441
As described above, it is not necessary for the MBSFN area configuration
infonnation to itlclude the MBSFN area configuration messages for all the CCs used
by the base station 100-2, but may include an MBSFN area configuration message
for some of the CCs. 111 addition, some of the CCs may be changed depending on
15 the type o f CCs on which the MBSFN area configuration information is transmitted.
The detailed description o f the transtnission on the MCCH in such a case will be
given with reference to FIG. 23.
[0 1451
FIG. 23 is a diagram illustrated to describe a second example o f the
20 transmission on the MCCH of MBSFN area configuration information for hvo or
Inore CCs. Referring to FIG. 23, the MCCH o f CC 1 and the MCCH o f CC5 are
illustrated. In this example, the base station 100-2 uses CC 1 to CC 5, and the
MBSFN area configuration message for each of CC I to CC3 is traostnitted on the
MCCH of CC 8 1 . In addition, the MBSFN area configuration message for each o f
25 CC 3 to CC 5 is transmitted on the MCCH of CC 5. Thus, the MBSFN area
configuration messages for all the CCs used by the base station 100-2 are not
necessarily transmitted on the MCCH of each CC.
101461
-- Common MBSFN Area Configuration Message behveen CCs
30 As described above, for example, the at least one MBSFN area
configuration messages tnay include the MBSFN area configuration message that is
cotnmon between at least two CCs included in the two or nlore CCs. in other words,
the MBSFN area configuration inforn~ation may include the MBSFN area
confignration message that is cotntnon between the at least two CCs. The detailed
description of the transtnission on the MCCI-I in such a case will be given with
5 reference to FIG. 24.
[0 1471
FIG. 24 is a diagram illustrated to describe a third exanlple of the
transmission on the MCCH of MBSFN area configuration information for two or
more CCs. Referring to FIG. 24, the MCCH of CC 1 is illnstrated. In this
10 example, the base station 100-2 uses CC 1 to CC 5, and the same MBSFN area
configuration tnessage is used atnong CC 1 to CC 5. Thus, the MBSFN area
configu~ation tilessage that is comtnon among CC 1 to CC 5 is transmitted on the
MCCH. The cell IDS of CC 1 to CC 5 alp, associated with the MBSFN area
configuration message that is colntnon among CC 1 to CC 5.
15 [0148]
FIG. 25 is a diagram illustrated to describe a fourth example o f the
transmission on the MCCH of MBSFN area configuration information for two or
11101.e CCs. Referring to FIG. 25, the MCCH of CC 1 is illustrated. In this
example, the base station 100-2 uses CC I to CC 5, and the same MBSFN area
20 configuration tnessage is used between CC 1 and CC 2. Thus, the MBSFN area
configuration tnessage that is comtnon between CC 1 and CC 2 is transmitted on the
MCCH. The cell IDS of CC 1 and CC 2 are associated \\it11 the MBSFN area
configuration message that is cotntnon between CC 1 and CC 2.
[0149] , ,
25 In this way, the MBSFN area configuration message that is common among
CCs may be transmitted on the MCCH. Thus, for example, infortnation to be
transtnitted is reduced. Accordingly, for example, a radio resource to be consutned
radio resource to be used on the MCCH) can be reduced. In addition, for example,
the power consumption of the base station 100-2 can be reduced.
30 [0150]
- Details of Transmission Control
In one example, the communication control unit 163 controls the
trat~stnission by mapping a signal of the MBSFN area configoration infol.mation (and
CC identification information) to the radio resource of the MCCI-I of the first CC, as
the control of the tra~tsmission. Thus, the MBSFN area configuration information
5 (and CC identification it~fortnatioo)is transmitted on the MCCH.
[0151]
In another example, the communication control unit 163 may control the
transmission by triggering the transmission of the MBSFN area configuration
information (and CC identification information) on the MCCH of the first CC.
10 Specifically, the communication control imit 163 may control the transmission by
instructing another component of the base station 100-2 (e.g., another constituent
elelllent included in the processing unit 160) to transmit the MBSFN area
configutation information (and CC identification information) on the MCCH of the
first CC. Thus, the MBSFN area configuration information (and CC identification
15 information) may be transmitted on the MCCH of the first CC.
[0152]
As described above, the MBSFN area configuration information for two or
more CCs including the first CC is transmitted on the first CC. For example, this
makes it possible to reduce the load on the MBMS for the terminal device 200-2 that
20 supports carrier aggregation. More specifically, for example, even when two or
more CCs are used, it is not necessary for the terminal device 200-2 to receive and
acquire the MBSFN area configuration message for each of the two or more CCs.
For example, the MBSFN area configuration inforination for tlle two or more CCs
can be received and acquired using one CC. Thus, it is possible to reduce the load
25 on the terminal device 200-2 to specify the PMCH (i.e. subframe allocated to the
PMCH).
[0153]
Furthermore, it is not necessary for the terminal device 200-2 to receive and
acquire the MCCH scheduling information on each of the two or more CCs, but the
30 MCCH scheduling information may be received and acquired, for exatnple, using
one CC. Thus, the load on the tenninal device 200-2 can be fi~rthere duced.
[0 1541
In one example, even when CCs for receiving MBMS sessions frequently
vary with a change in communication quality of the CC, the terminal device 200-2 is
not necessary to acquire the MCCH scheduling information and the MBSFN area
5 configuration information each time the CC varies. In another example, even when
the same MBMS session is transmitted on each CC as illustrated in FIG. 5 and the
tenninal device 200-2 receives the MBMS session on the CC having satisfactory
communication quality, the terminal device 200-2 is not necessary to acquire the
MCCH scheduling information and the MBSFN area configuration information on
10 each CC. In still another example, even when different parts of the same MBMS
session are transmitted on each CC as illustrated in FIG. 6 and the tennitla1 device
200-2 receives the different parts on each CC, the terminal device 200-2 is not
necessary to acquire the MCCH scheduling information and the MBSFN area
configuration information on each CC. Thus, it is possible to reduce the load on the
15 te~minadl evice 200-2.
[0155]
The foregoing has described the communication control unit 163
particularly based on the first CC (e.g., CC I ) . It will be understood that the
communication cotltrol unit 163 cat1 control the transmission of the MBSFN area
20 configuration information for two or more CCs including a different CC (e.g., any of
CC 2 to CC 5) on the MCCH of the other CC.
101561
<4.2. Configuration of Terminal Device>
Next,-an-ex%rnpla~y configuration of the terminal device 200-2 according to
25 the second embodiment will be described with reference to FIG. 26. FIG. 26 is a
block diagram illostratitlg the exemplary configuration of the terminal device 200-2
according to the second embodiment. Referring to FIG. 26, the tenninal device
200-2 is configured to include an antenna unit 210, a wireless cotntnunication unit
220, a storage unit 230, an input unit 240, a display unit 250, and a processing onit
30 270.
[0 1571
For the antenna unit 210, the wireless communication unit 220, the storage
unit 230, the input unit 240, and the display unit 250, there is no pa~ticular difference
between the first c~nbodiment and the second embodiment. Thus, in this
description, only the processing unit 270 will be described.
5 [01581
(Processing Unit 270)
The processing unit 270 i~nplelnentsv arious fi~~ictiotlos f the terminal
device 200-2. The processing unit 270 is configured to include an information
acquisition unit 271, a co~n~municatiocno ntrol unit 273, and a display control unit
10 275.
[0159]
(Information Acquisition Unit 271)
The ir~fonnation acquisition unit 271 acquires the specific infor~nation,
which is used to specify the PMCI-I o f two or more CCs including the first CC and is
15 transmitted on the first CC by the base station 100-2.
[0 1601
Particularly, in the second embodiment, the specific information is MBSFN
area configi~ratio~iln formation for the two or more CCs. In other words, the
information acquisition unit 271 acquires the MBSFN area configuration information
20 for the two or more CCs.
[0161]
As described above, for example, the MBSFN area configuration
information is transmitted on the MCCI-1 of the first CC. The information
acquisition inlit 271 acquires the MBSFN area configuration information transmitted
25 on the MCCH ofthe first CC.
[0 1621
The contents of the MBSFN area configuration information is as described
previously in connection \vith the base station 100-2.
[0 1631
30 The foregoing has described the information acquisition unit 271
pa~ticulariy based on the first CC. It will be understood that the MBSFN area
configuration information for two or more CCs including a different CC cat1 be
transmitted on the MCCH of the other CC. The i~lfor~natioatcl quisition unit 271
can acquire the MBSFN area configuration infomation transmitted on the MCCH of
the other CC.
5 [0164]
(Communication Control Unit 273)
The communication control unit 273 specifies a PMCIi of the CC included
in the two or more CCs based on the specific information.
[0 1651
10 Particularly, in the second emboditnent, the specific information is the
MBSFN area configuration infor~nationfo r the hvo or tnore CCs. In other words,
the cotnmunication control unit 273 specifies the PMCH of the CC included in the
hvo or tnore CCs based on the MBSFN area configuration infor~nationfo r the two or
Inore CCs.
15 [0166]
More specificallj; for example, the communication control unit 273
specifies a PMCH to which a desired MBMS sessiotl is mapped, based on the
MBSFN area configuration infortnatiotl for the hvo or more CCs. In other words,
the cornrnutlication control unit 273 specifies a subfratne to be allocated to the
20 PMCH to which a desired MBMS session is mapped. Then, the communication
control unit 273 acquires the desired MBMS session transmitted on the specified
PMCI-I. In other words, the comtnunication control unit 273 specifies a radio
resource (subframe) to which the desired MBMS session is mapped, from the MSI
transmitted on the specified PMCH, and acquires the desired MBMS session
25 transmitted through the specified radio resource.
[0 1671
The foregoing has described the co~ntnunicatiotl control unit 273 based on
the MBSFN area configuration information for the hvo or tnore CCs, which is
transmitted on the first CC. It will be understood that, based on the MBSFN area
30 configuration information for hvo or tnore CCs tra~~stnittedo n a different CC
included in the t\vo or more CCs, the communication control unit 273 cat1 specify the
PMCI-I of the CC included in the two or more CCs.
[OI 681
(Display Control Unit 275)
The display control unit 275 controls the display unit 250 to display a screen.
6 For example, the display control unit 275 generates a screen to be displayed by the
display unit 250 and causes the display unit 250 to display the screen.
[0 1691
<4.3. Processing Procedure>
Subseqoently, an example of a commutiication control prncess according to
10 the second etnbodituent will be described with reference to FIGS. 27 and 28.
[0 1701
(Communication Control Process in Base Station)
FIG. 27 is a flowchart illustrating schematically an exemplary procedure of
a communication control process by the base station 100-2 according to the second
15 embodiment.
[0171]
The information acquisition unit 161 acquires the MBSFN area
configuration information for two or more CCs (S401). The two or more CCs
include the first CC.
20 [0172]
The communication control unit 163 controls the transmission of the
MBSFN area configuration information on the MCCH of the first CC (S403). Then,
the MBSFN area configuration information on the MCCH of the first CC is
trat~stnitted. Then, the process ends.
25 [Of731
(Communication Control Process in Terminal Device)
FIG. 28 is a flowchart illustrating schematically an exetnplary procedure of
a communication cotltrol process by the terminal device 200-2 according to the
second etnbodi~nent.
30 [0174]
The infomiation acquisition unit 271 acquires the MCCN scheduling
information for the first CC (S411). More specificall): the predetermined SIB (SIB
13) that inclndes the MCCH scheduling information is transmitted on the first CC.
The information acquisition unit 271 acqnires the MCCH scheduling information
that is included in thc predetermined SIB.
5 [0175]
Next, the information acqnisition uuit 271 specifies an MCCH of the first
CC based on the MCCH scheduling information (S413). Then, the information
acquisition unit 271 acquires the MBSFN area configuration itifonnation for two or
more CCs including the first CC, which is transmitted on the MCCH of the first CC
10 (S415).
[0 1761
Further, the communication control unit 273 specifies a PMCH to which a
desired MBMS session is mapped, based on the MBSFN area configi~ration
information (S417). In other words, the cotn~nunication control unit 273 specifies a
15 subframe to be allocated to the PMCH to which the desired MBMS session is
mapped.
[O 1771
Then, the communication control unit 273 acquires the desired MBMS
session transmitted on the specified PMCH (S419). In other words, the
20 co~nmunication control unit 273 specifies a radio resource (subframe) to which the
desired MBMS session is mapped from the MSI transmitted on the specified PMCH,
and acquires the desired MBMS session transmitted through the specified radio
resource. Then, the process ends.
[0178]
25 x4.4. First Modification>
A first modification of the second embodiment will be described with
reference to FIGS. 29 to 33.
[O 1791
As described above, in the second embodiment, the MBSFN area
30 configuration information for two or more CCs including the first CC is transmitted
on the first CC. In addition, as described above, for example, the MBSFN area
configuration information includes one or more MBSFN area configuration messages.
[0 1 801
On the other hand, according to the first modification of the second
embodiment, the MBSFN area configuration inforlllation includes one MBSFN area
5 configuration message including one or more pieces of PMCH allocation information.
[0181]
(Base Station 100-2: Information Acquisition Unit 161)
- MBSFN Area Configuration Message
In the first modification, the MBSFN area configuration informatiou
10 includes one MBSFN area configoration message including one or more pieces of
PMCH allocation information. In addition, each of the one or more pieces of
PMCH allocation information is PMCH allocation information for at least one CC of
the two or more CCs. The PMCH allocation information is, for example,
information that indicates at least a subframe in which the PMCH is located.
15 [0182]
In addition, for example, the one MBSFN area configuration message
includes the one or more pieces of PMCH allocation information and the
identification information of the CC that corresponds to the one or more pieces of
PMCH allocatiotl infonnation. The identification information is, for example, a cell
20 ID. Thus, for example, the terminal device 200-2 can identify which of CCs
corresponds to individual PMCH allocation information iucluded in the one MBSFN
area configuration message.
[0183]
-- MBSfhT-Area Configuratioll Message for each CC
25 In one example, the one MBSFN area cotlfiguration message includes the
PMCH allocation infonnation for each of the two or more CCs. The detailed
description will be give11 on this point with reference to FIG. 29.
[0 1841
FIG. 29 is a diagram illustrated to describe a first example of the MBSFN
30 area configuration message that includes one or more pieces of PMCH allocation
infonnation. Referring to FIG. 29, the MBSFN area configuration message for CC
I is illustrated. In this example, the base station 100-2 uses CC 1 to CC 5, and the
MBSFN area configuration message includes the PMCI-I allocation information for
each of CC 1 to CC 5. In addition, the MBSFN area configuration message
includes a cell ID of the CC that corresponds to each of five pieces of PMCI-I
5 allocation infonnation. The cell ID of the CC is associated with the PMCH
allocation information for the CC. In other ~vordst,h e cell ID for CC 1 is associated
with the PMCH allocation infonnation for CC 1. In addition, the cell ID for CC 3 is
associated with the PMCH allocation information for CC 3.
[0185]
10 Thus, for example, it is possible to determine the PMCH for each CC.
[01 861
It is not necessary for the one MBSFN area configuration message to
include the PMCH allocation info~mation for all the CCs (e.g., CC 1 to CC 5) used
by the base station 100-2, but may include the PMCH allocation information for
15 some of the CCs. In other words, it is not necessary for the two or more CCs to be
all the CCs (e.g., CC 1 to CC 5), but may be some of them. In addition, these some
of CCs may be changed depending on the type of CC on which the one MBSFN area
configuration message is transmitted. The detailed description will be given on this
point with reference to FIG. 30.
20 [0187] .
FIG. 30 is a diagram illustrated to describe a second example of the MBSFN
area configuration message including one or more pieces of PMCH allocation
information. Referring to FIG. 30, the MBSFN area configuration message for CC
1 and the-MBSFN area configuration message for CC5 are illustrated. In this
25 example, the base station 100-2 uses CC I to CC 5, and the MBSFN area
configuration message for CC 1 includes the PMCH allocation information for each
of CC 1 to CC 3. In addition, the MBSFN area configuration message for CC 5
includes the PMCH allocation infonnation for each of CC 3 to CC 5. Thus, the
PMCH allocation information for all the CCs used by the base station 100-2 is not
30 necessarily included in the MBSFN area configuration message for each CC.
[0 1881
-- Comlnon PMCH Allocation Information between CCs
The one or more pieces of PMCH allocation infor~nation may include the
PMCH allocation infonnation that is cotnmon between at least two CCs included in
the two or tnore CCs. In other words, the information acqoisition unit 161 (nay
5 acquire the MBSFN area configuration message that includes the PMCH allocation
infonnation that is common between the at least hvo CCs. The detailed description
will be given on this point with reference to FIGS. 31 and 32.
[0 1891
FIG. 31 is a diagram illustrated to describe a third exatnple of the MBSFN
10 area configuration message that includes one or more pieces of PMCH allocation
infonnation. Referring to FIG. 31, the MBSFN area configuration message for CC
I is illustrated. In this exatnple, the base station 100-2 uses CC 1 to CC 5, and the
allocation of PMCH is the same among CC 1 to CC 5. Thns, the MBSFN area
configuration message includes the PMCH allocation information that is colnlnon
15 atnong CC 1 to CC 5. In addition, the MBSFN area configuration message iucludes
the cell IDS of CC I to CC 5 that corresponds to the PMCH allocation information.
The cell IDS of CC 1 to CC 5 are associated with the PMCH allocation infortnation
that is common among CC 1 to CC 5.
[O 1901
20 FIG. 32 is a diagram illustrated to describe a fourth example of the MBSFN
area configoration tnessage that includes one or more pieces of PMCH allocation
information. Referring to FIG. 32, the MBSFN area configoration message for CC
I is illustrated. In this exatnple, the base station 100-2 uses CC 1 to CC 5, and the
allocation of: PMCH is the same between CCI and CC 2. Thus, the MBSFN area
25 configuration tnessage includes the PMCH allocation itlfortnation that is common
behveen CCl and CC 2. In addition, the MBSFN area configuration message
includes the cell IDS of CC I and CC 2 that corresponds to the PMCH allocation
infomlation. The cell IDS of CC 1 and CC 2 are associated with the PMCH
allocation information that is common betlveen CC 1 and CC 2.
30 [0191]
In this way, the PMCH infonnation that is coinman atnong CCs nlay be
used. Thus, for example, information to be transmitted is reduced. Accordingl~:
for example, radio resources to be consumed (e.g., radio resource to be used for an
MBSFN area configuration message) can be reduced. In addition, for exatnple, the
power consumption of the base station 100-2 can be reduced.
5 [0192]
- Details of Information contained in PMCH Allocation It~fornlation
In one example, each of the one or more pieces of PMCH allocation
information includes at least the PMCH information list. In addition, for example,
each of the one or more pieces of PMCH allocation information fin-ther includes
10 cotntnon subfra~ne allocation and comlnon subframe allocation period. Thus, for
example, a PMCH to which a desired MBMS session and/or MTCH is mapped is
specified. In other words, a subframe in which the PMCH is located is specified.
[0 1931
(Base Station 100-2: Communication Control Unit 163)
15 - Transtnission on MCCH
As described above, for example, the cotnmunication control unit 163
controls the transmission of the MBSFN area configuration information on the
MCCH of the first CC.
[O 1941
20 Particularly, in the fitst modification, the MBSFN area configuration
information it~cludcso ne MBSFN area configuration message including one or more
pieccs of PMCH allocation infonnation. III other words, the communication control
unit 163 controls the transmission of the one MBSFN area configuration message on
., the MCCH of the first CC. The detailed description will be given on this point with
25 reference to FIG. 33
[0 1951
FIG. 33 is a diagram illustrated to describe an example of the transmission
on the MCCH of the MBSFN area configuration tnessage that includes one or inore
pieccs of PMCH allocation information. Referring to FIG. 33, the MCCH of CC 1
30 is illustrated. The MBSFN area configuration message for CC 1 is transmitted on
the MCCH of CC I. In this exatnple, the base station 100-2 uses CC 1 to CC 5, and
the MBSFN area configuration message includes the PMCH allocation information
for each of CC 1 to CC 5.
[0 1961
As described above, the MBSFN area configuratiotl information for two or
5 more CCs including the first CC is transmitted on the first CC. Thus, for example,
it is possible to reduce the load on the MBMS for the terminal device 200-2 that
supports carrier aggregation. This point is as described previously in the second
embodiment.
[O197]
10 x4.5. Second Modificatiotl>
A second modification of the second embodiment \\rill be described with
reference to FIGS. 34 to 37.
[0 1981
In general, the PMCH is present in each CC. In other \\lords, the PMCH is
15 located in a radio resource within one, CC. On the other hand, in the second
modification, a PMCH that covers at least two CCs is newly defined. Then, the
MBSFN area configuration information includes information indicating the PMCH
that covers at least two CCS i~lcluded in the two or more CCs.
[O 1991
20 (MBSFN Area Configuratiotl Itlfonnation)
In the second modification, a PMCI-1 that covers at least two CCs i~lcluded
in the two or more CCs including the first CC (hereinafter referred to as "multiple
CC PMCH") is determined as the PMCH to be used in an MBSFN area. In this
case, the MBSFN area configuration infor~nation for the two or Inore CCs includes
25 information indicating a tnultiple CC PMCH. The detailed description will be
given on this point with reference to FIGS. 34 and 35.
[O2OO]
FIG. 34 is a diagram illustrated to describe a first example of the MBSFN
area configuration information that includes information indicating a ~nultipie CC
30 PMCM. Referring to FIG. 34, three MBSFN area configuration messages are
illustrated as the MBSFN area configuration information. In this example, one of
the three MBSFN area confignration tnessages is a norlnal MBSFN area
configuration tnessage for CC 1 (i.e. it indicates PMCH of CC I ) . In addition, the
remaining two of the three MBSFN area configuration tnessages are multiple CC
MBSFN area configuration tnessages for CC 1 and CC 2. These two multiple CC
5 MBSFN area configuration tnessages indicate the multiple CC PMCH that covers
CC 1 and CC 2. For example, the tnrtltiple CC MBSFN area configuration tnessage
for CC 1 includes a radio resource (subframe) of the CC I allocated to the multiple
CC PMCH and identification infonnation of another CC in \vl~ich the multiple CC
PMCH is located (e.g., cell ID of CC 2). 111 addition, the tnultiple CC MBSFN area
10 configuration message for CC 2 includes a radio resource (subframe) of the CC 2
allocated to the multiple CC PMCH and identification information of another CC in
which the multiple CC PMCH is located (e.g., cell ID ofCC 1). In addition, when a
plurality of tnultiple CC PMCHs covering CC 1 and CC 2 are determined as the
PMCH to be used in the MBSFN area, the multiple CC MBSFN area configuration
15 message for each of CC 1 and CC2 may further include identification infortnation for
identifying the multiple CC PMCH. Accordingly, radio resources are associated
between CCs, and thus it is possible for the tenninal device 200-2 to specify a
multiple CC PMCH.
[020 1 ]
20 FIG. 35 is a diagratn illustrated to describe a second example of the MBSFN
area configuration infortnation that includes information indicating a multiple CC
PMCH. The diagram is illustrated to describe a second exatnple of the MBSFN
area configuration information that includes information indicating a multiple CC
PMCH. Referring to FIG. 35, one MBSFN area configuration niessage is illustrated
25 as the MBSFN area configuration infonnation. The one MBSFN area configuration
tnessage includes three pieces of PMCH allocation information. In this example,
one of the three pieces of PMCH allocation information is norn~al PMCI-I allocation
information for CC 1 (i.e. it indicates PMCH of CC 1). In addition, the remaining
two of the three pieces of PMCH allocation infonnation are tnultiple CC PMCH
30 allocation informatiot~fo r CC 1 and CC 2. These two pieces of multiple CC PMCH
allocation information indicate a multiple CC PMCH that covers CC 1 and CC 2.
For example, the multiple CC PMCH allocation information for CC I includes a
radio resource (subfiame) of the CC I allocated to the tuoltiple CC PMCH and
identification information of another CC in which the ~nultipleC C PMCH is located
(e.g., cell ID of CC 2). For exatnple, the multiple CC PMCH allocation information
5 for CC 2 includes a radio resource (subframe) of the CC 2 allocated to the multiple
CC PMCH and identificatiotl information of another CC in which the multiple CC
PMCH is located (e.g., cell ID of CC 1). In addition, when a plurality of tnultiple
CC PMCHs covering CC 1 and CC 2 are set, the tnultiple CC PMCH allocation
information for each of CC 1 and CC2 tnay fin-ther include identification infornlation
10 for identifying the ~nultipleC C PMCI-I. Accordingly, radio resources are associated
between CCs, and thus it is possible for the tertninal device 200-2 to specify the
tnultiple CC PMCH.
[0202]
For example, the base station 100-2 transmits the MBSFN atca
-
15 configu~ation information as described above on the MCCH. The tertninal device
200-2 specifies the tnultiple CC PMCH based on the MBSFN area configuration
infortnation. Various types of MBSFN area configi~ration information that includes
infonnation indicating the nlultiple CC PMCH can be applicable, but not litnited to
exanlples illustrated in FIGS. 34 and 35. The detailed description will be given of
20 the multiple CC PMCH with reference to FIGS. 36 and 37.
[0203]
FIG. 36 is a diagratn illustrated to describe a first example of the multiple
CC PMCH. Referring to FIG. 36, the subfiame for PMCH with respect to each of
CC 1 and CC-2 is-illustrated. In this exatuple, all the subframes for PMCH are
25 allocated to one multiple CC PMCH. The MSI for the multiple CC PMCH is
transmitted through the head portion of the ~nultiple CC PMCH (e.g., one or Inore
subfra~nesin the head).
[0204]
FIG. 37 is a diagratn illustrated to describe a second example of the multiple
30 CC PMCH. Referring to FIG. 36, the subfiame for PMCH with respect to each of
CC 1 and CC 2 is illustrated. In this example, some of subframes for PMCH, rather
than all the sabfra~nesfo r PMCH, are allocated one multiple CC PMCH. The MSI
for the multiple CC PMCH is transtnitted throagh the head portion of the multiple
CC PMCH (e.g., one or more subframes in the head). The retnaining subframes
may be allocated to a different multiple CC PMCN 01. may be allocated to a PMCI-1
5 for each CC.
[0205]
The second modification of the second etnbodiment has been described
above. According to the second modification of the second embodiment, it is
possible to transmit one MBMS session (or one MTCH) using a plurality of radio
10 resources. Thus, for example, according to the second modification, it is possible to
broadcast a large amount of data (e.g., high-qoality moving pictures).
[0206]
<<5. Application Example>>
Tecl~nology according to embodiments of the present disclosure is
15 applicable to various products. For example, a base station 100 may be realized as
any type of evolved Node B (eNB) such as a macro eNB, and a small eNB. A small
eNB may be an eNB that covers a cell smaller than a tnacro cell, such as a pico eNB,
micro eNB, or home (femto) eNB. Instead, the base station 100 may be realized as
any other types of base stations such as a NodeB and a base transceiver station (BTS).
20 The base station 100 may include a main body (that is also referred to as a base
station apparatus) configured to control wireless communication, and one or more
remote radio heads (RRH) disposed in a different place from the main body.
Additionally, various types of tenninal devices to be discussed later may also operate
as the base station 100 by temporarily or setni-permanently executing a base station
25 function.
[0207]
For example, a terminal device 200 may be realized as a mobile terminal
such as a smartphone, a tablet personal cotnputer (PC), a notebook PC, a portable
game terminal, a po~tableldongle type mobile router, and a digital camera, or an in-
30 vehicle terminal such as a car navigation apparatus. The terminal device 200 may
also be realized as a terminal (that is also referred to as a machine type
cotnmunication ( M E ) terminal) that performs machine-to-machine (M2M)
cotntnu~~ication. Furthennore, the terminal device 200 tnay be a \\,ireless
communication module (such as an integrated circuit tnodule including a single die)
tnounted on each of the terminals.
5 [0208]
<5.1. Application Examples Regarding Base Station>
(First Application Example)
FIG. 38 is a block diagram illustrating a first exatnple of a schematic
configuration of an eNB to which the technology of the present disclosure may be
10 applied. At1 eNR 800 includes one or more antennas 810 and a base station
apparatus 820. Each antenna 810 and the base station apparatus 820 tnay be
connected to each other via an RF cable.
[0209]
Each of the antennas 810 includes a single or tnultiple antenna elements
15 (such as tnultiple antenna elements included in an MMO antenna), and is used for
the base station apparatus 820 to transmit and receive wireless signals. The eNB
800 may include the tnultiple antennas 810, as illustrated in FIG. 38. For example,
the tnultiple antennas 810 may be compatible with tnultiple frequency bands used by
the eNB 800. Although FIG. 38 illustrates the example in which the eNB 800
20 includes the multiple antennas 810, the eNB 800 tnay also include a single antenna
810.
[02 101
The base statiou apparatus 820 includes a controller 821, a memory 822, a
network interface 823, atld a wireless comtnunication interface 825.
25 [0211]
The controller 821 may be, for example, a CPU or a DSP, and operates
various functions of a higher layer of the base station apparatus 820. For exatnple,
the controller 821 generates a data packet from data in signals processed by the
wireless communication interface 825, and transfers the generated packet via the
30 net\vork interface 823. The controller 821 tnay bu~tdle data from multiple base
band processors to generate the bundled packet, and transfer the generated bundled
packet. The controller 821 may have logical fimctions of performing control such
as radio resource control, radio bearer control, mobility management, admission
control, and scheduling. The co~~tronla y be performed in corporation \\rith an eNB
or a core network node in the vicinity. The nlemoly 822 includes RAM and ROM,
5 and stores a program that is executed by the controller 821, and various types of
control data (such as a terminal list, transmission power data, and scheduling data).
[02 121
The network interface 823 is a communication interface for connecting the
base station apparatus 820 to a core nehvork 824. The controller 821 may
10 conlmunicate with a core tiehvork node or atlother eNB via the network interface 823.
In that ease, the eNB 800, and the core nehvork node or the other eNB may be
connected to each other through a logical interface (such as an S1 interface and an
X2 interface). The network interface 823 may also be a wired communication
interface or a wireless communication interface for wireless backhaul. I f the
15 nehvork interface 823 is a wireless communication interface, the network interface
823 may use a higher frequency band for wireless communication than a frequency
band used by the wireless communication interface 825.
[02 131
The wireless co~l~munication interface 825 supports any cellular
20 communication scheme such as Long Term Evolution (LTE) and LTE-Advanced, and
provides wireless connection to a terminal positioned in a cell of the eNB 800 via the
antenna 810. The wireless communication interface 825 tnay typically include, for
example, a baseband (BB) processor 826 and an RF circuit 827. The BB processor
826 tnay perform, for example, encodinddecoding, modulating/demodulating, and
25 multiplexing/demuItiplexing, and perfonns various types of signal processing of
layers (such as L1, medium access control (MAC), radio link control (RLC), and a
packet data convergence protocol (PDCP)). The BB processor 826 may have a part
or all of the above-described logical functions instead of the controller 821. The
BB processor 826 may be a memory that stores a com~nu~~icatcioonnt rol program, or
30 a module that includes a processor and a related circuit configured to execute the
program. Updating the program map allo\\f the functions of the BB processor 826
to be changed. The module may be a card or a blade that is inserted into a slot of
the base station apparatus 820. Alternatively, the tnodule may also be a chip that is
mounted on the card or the blade. Meanwhile, the RF circuit 827 may include, for
example, a mixel; a filter, and an amplifier, and transtnits and receives wireless
5 sigtlals via the antenna 8 10.
[02 141
The wireless communication interface 825 may include the multiple BB
processors 826, as illustrated in FIG. 38. For exatnple, the ~nultipleB B processors
826 may be corl~patiblew ith ~nultiplef reqoency bauds used by the eNB 800. The
10 wireless communication interface 825 (nay include the tnultiple RF circuits 827, as
illustrated it1 FIG. 38. For example, the multiple RF circuits 827 may be compatible
with tnultiple antenna elements. Although FIG. 38 illustrates the example in which
the wireless corn~nl~tlicatioinn terface 825 itlcludes the tnultiple BB processors 826
and the multiple RF circuits 827, the wireless cotnmunication interface 825 may also
15 include a single BB processor 826 or a single RF circuit 827.
[02 151
(Second Application Example)
FIG. 39 is a block diagram illustrating a second exa~nple of a schc~natic
configuration of an eNB to \vhich the technology of the present disclosure may be
20 applied. An eNB 830 includes one or more antennas 840, a base station apparatus
850, and an RRH 860. Each atltenna 840 and the RRH 860 may be connected to
each other via an RF cable. The base station apparatus 850 and the RRH 860 may
be cot~rlectedt o each other via a high speed line such as an optical fiber cable.
[0216] ',
25 Each of the antennas 840 inclodes a single or multiple anteuna elements
(such as m~~ltipalen tenna elements included in an MIMO antenna), and is used for
the RRH 860 to t~aosmit and receive wireless signals. The eNB 830 may include
the multiple antennas 840, as illustrated in FIG. 39. For example, the multiple
antennas 840 may be compatible with ~nultiplef requency bands used by the eNB 830.
30 Although FIG. 39 illustrates the exa~nplein which the eNB 830 includes the tnultiple
antennas 840, the cNB 830 may also include a single antenna 840.
[02 171
The base station apparatus 850 includes a controller 851, a memory 852, a
network interface 853, a wireless communication interface 855, and a connection
interface 857. The controller 851, the memory 852, and the network interface 853
5 are the same as the cotitroller 821, the tnemory 822, and the nehvork interface 823
described with reference to FIG. 38.
[02 181
The wireless comtnunicatio~~ interface 855 supports any cellular
com~nunication scheme such as LTE and LTE-Advanced, and provides wireless
10 corn~nunication to a termitlal positioned in a sector corresponding to the RRH 860
via the RRH 860 and the antenna 840. The wireless comtnunication interface 855
may typically include, for example, a BB processor 856. The BB processor 856 is
the same as the BB processor 826 described with reference to FIG. 38, except the BB
processor 856 is conttected to the RF circuit 864 of the RRH 860 via the connection
15 interface 857. The wireless cornmunicatiotl interface 855 may include the ~nultiple
BB processors 856, as illustrated in FIG. 39. For example, the ~nultiple BB
processors 856 nlay be compatible with multiple frequency bands used by the eNB
830. Although FIG. 39 illustrates the example in which the \vireless comtnunication
interface 855 includes the tnultiple BB processors 856, the wireless comtnunicatio~~
20 interface 855 may also it~cludea single BB processor 856.
[02 191
The connection interface 857 is an interface for connecting the base station
apparatus 850 (wireless communication interface 855) to the RRH 860. The
connection interface 857 may also be a communicatiot~ module for communication in
25 the above-described high speed line that connects the base station apparatus 850
(\\rireless communication interface 855) to the RRH 860.
[0220]
The RRH 860 includes a connection interface 861 and a wireless
cotntnurlication interface 863.
30 [0221]
The conuection itlterface 861 is at1 interface for connecting the RRI-I 860
(\\rireless commonication interface 863) to the base station apparatus 850. The
connection interface 861 may also be a co~nninriication module for commonication in
the above-described high speed line.
[0222]
5 The wireless co~nmanication interface 863 transmits and receives wireless
signals via the antenna 840. The wireless connnunication interface 863 may
typically include, for example, the RF circuit 864. The RF circuit 864 !nay include,
for example, a mixel; a filter, and an amplifier, and transmits and receives wireless
signals via the antenna 840. The \vireless comtnunication interface 863 may
10 include multiple RF circuits 864, as illustrated in FIG. 39. For example, the
lnultiple RF circuits 864 may support mnltiple antenna elen~ents. Although FIG. 39
illustrates the example in which the wireless cotn~nunication interface 863 includes
the nlultiple RF circuits 864, the wireless communication interface 863 may also
include a single RF circuit 864.
15 102231
In the eNB 800 and the eNB 830 illustrated in FIG. 38 and FIG. 39
respectively, the information acquisition unit 15 1 and the communication control nnit
153 described with reference to FIG. 8 may be provided in the wireless
conn~nunication interface 825 and the wireless co~nmunication interface 855 andlor
20 the wireless communicatio~i~n terface 863. In one example, the infor~nation
acquisition unit 151 and the communication control unit 153 nlap be provided in one
BB processor 826 or two or more BB processors 826, and one BB processor 856 or
two or more BB processors 856. In addition, at least some of these functions may
be provided in the controller 821 and the controller 851. In this regard, the
25 information acquisition unit I61 and the co~nnlnnicationc ontrol unit 163 described
with reference to FIG. 19 are also similar to the information acquisition nnit 151 and
the cornn~ut~icatiocno ntrol nnit 153, respectively.
[0224]
4.2. Application Exan~plesR egarding Terminal device>
30 (First Application Example)
FIG. 40 is a block diagranl illustrating an example of a schematic
configuration of a smartphone 900 to which the tecllnology of the present disclosure
map be applied. The sma~tphone 900 includes a processor 901, a memory 902, a
storage 903, an external connection interface 904, a camera 906, a sensor 907, a
micropl~one9 08, an input device 909, a display device 910, a speaker 91 1, a wireless
5 colnrnunication interface 912, one or more antetltla switches 915, one or more
antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.
[0225]
The processor 901 may be, for example, a CPU or a system on a chip (SoC),
and controls fimctiol~so f an application layer and another layer of the smartphone
10 900. The rnelnory 902 includes RAM and ROM, and stores a program that is
executed by the processor 901, and data. The storage 903 may include a storage
medium such as a semicondoctor memory and a hard disk. The external connection
interface 904 is at1 interface for connecting an external device such as a tnetnory card
and a univetsal serial bus (USB) device to the smattphone 900.
15 [0226]
The camera 906 includes an itnage sensor such as a charge coupled device
(CCD) and a cotnplementary metal oxide semiconductor (CMOS), and generates a
captured image. The sensor 907 may include a group of sensors such as a
measorement sensor, a gyro sensor, a geomagnetic sensor, and an acceleratiotl sensor.
20 The microphot~e9 08 converts sounds that are input to the smattphone 900 to audio
signals. The input device 909 includes, for example, a touch sensor configured to
detect touch onto a screen of the display device 910, a keypad, a keyboard, a button,
or a switch, and receives an operation or an information input from a usel: The
display device 910 includes a screen such as a liquid ctystal display (LCD) and an
25 organic light-emitting diode (OLED) display, and displays an output image of the
smartphone 900. The speaker 91 1 converts audio signals that are output from the
smartphone 900 to sounds.
[0227]
The wireless comm~unication interface 912 suppo~ts any cellular
30 con~monication scheme such as LTE and LTE-Advanced, and perfonns \vireless
communication. The wireless comtnunication interface 912 may typically include,
for example, a BB processor 913 and an RF circuit 914. The RB processor 913
may perfonn, for example, encoding/decoding, modulatinddemod~~latinga, nd
~nultiplexing/demultiplexing,a nd perfom~sv arious types of signal processing for
wireless conlmunication. Meanwhile, the RF circuit 914 may include, for example,
5 a mixel; a filte~; and an amplifier, and traosmits and receives wireless signals via the
antelma 916. The wireless communication interface 912 tnay also be a one chip
module that has the BB processor 913 and the RF circuit 914 integrated thereon.
The \vireless communication iuterface 912 may include the multiple BB processors
913 and the multiple RF circuits 914, as illustrated in FIG. 40. Although FIG. 40
10 illustrates the example in which the wireless commonication interface 912 iilcludes
the tnultiple BB processors 913 artd the multiple RF circuits 914, the wireless
communication interface 912 may also include a sitlgle BB processor 913 or a single
RF circuit 914.
[0228]
15 Fullhermore, in addition to a cellular co~nmunication scheme, the wireless
cotnmunication interface 912 tnay support atlother type of wireless communication
scheme such as a short-distance wireless cotllmunicatiotl scheme, a near field
conlmunication scheme, and a wireless local area network (LAN) scheme. In that
case, the wireless communication interface 912 may include the BB processor 913
20 and the RF circuit 914 for each wireless communication scheme.
[0229]
Each of the antenna switches 915 switches connection destinations of the
antelmas 916 among multiple circuits (such as circuits for different wireless
communication schemes) included in the wireless cotnmunication interface 912.
25 [0230]
Each of the antennas 916 includes a single or tnultiple antenna elements
(such as multiple antenna elements included in an MIMO antenna), and is used for
the wireless comtnunication interface 912 to transmit and receive wireless signals.
The smartphone 900 may include the multiple antennas 916, as illustrated in FIG. 40.
30 Although FIG. 40 illustrates the example in which the smartphone 900 includes the
multiple autennas 91 6, the smartphone 900 may also include a single antenna 916.
[023 I]
Furthemlore, the smartphone 900 may include the antenna 916 for each
wireless cominunication scheme. In that case, the antenna switches 915 may be
omitted from the configuration of the smartphone 900.
5 [0232]
The bus 917 connects the processor 901, the memory 902, the storage 903,
the external connection interface 904, the camera 906, the sensor 907, the
microphone 908, the input device 909, the display device 910, the speaker 911, the
wireless communication interface 912, and the auxiliary controller 919 to each other.
10 The battery 91 8 supplies power to blocks of the smartphone 900 illustrated in FIG. 40
via feeder lines, which are partially shown as dashed lines in the figure. The
auxiliary co~ltlaller9 19 operates a minimum necessary function of the stnartphone
900, for example, in a sleep mode.
[0233]
15 In the stnartphone 900 illustrated in FIG. 40, the information acquisition unit
261 and the communication control unit 263 described with reference to FIG. 15 may
be provided in the wireless communication interface 912. In one example, the
information acquisition unit 261 and the communication control unit 263 may be
provided in one BB processor 913 or may be provided in two or more BB processors
20 913. In addition, at least some of these functions may be provided in the processor
901 or the auxiliary controller 919. 111 this regard, the information acquisition unit
271 aud the communication cor~trolu nit 273 described with reference to FIG. 26 are
also similar to the information acquisition unit 261 and the communication control
unit 263, respectively.
25 [0234]
(Second Application Example)
FIG. 41 is a block diagram illustrating an example of a schematic
configaration of a car uavigatiou apparatus 920 to which the technology of the
present disclosure map be applied. The car navigation apparatus 920 includes a
30 processor 921, a memory 922, a global positioning system (GPS) module 924, a
sensor 925, a data interface 926, a content player 927, a storage mediom interface
928, an input device 929, a display device 930, a speaker 931, a wireless
communication interface 933, one or nlore antenna switches 936, one or more
antennas 937, and a battery 938.
[0235]
5 The processor 921 may be, for example, a CPU or a SoC, and controls a
navigation finlction and another function of the car navigation apparatns 920. The
memory 922 includes RAM and ROM, and stores a program that is executed by the
processor 92 1 , and data.
[0236]
10 The GPS module 924 uses GPS signals received ftom a GPS satellite to
measure a position (such as latitude, longitude, and altitude) of the car navigation
apparatus 920. The sensor 925 may ii~clude a group of sensors such as a gyro
sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 926 is
connected to, for example, an in-vehicle network 941 via a terminal that is not shown,
15 and acquires data generated by the vehicle, such as vehicle speed data.
[0237]
The content player 927 reproduces content stored in a storage medium (such
as a CD and a DVD) that is inserted into the storage medium interface 928. The
input device 929 includes, for example, a touch sensor configured to detect touch
20 onto a screen of the display device 930, a button, or a switch, and receives an
operation or an inforination input from a user. The display device 930 includes a
screen such as a LCD or an OLED display, atid displays an image of the navigation
function or content that is reproduced. The speaker 931 outputs sounds of the
navigation function or the content that is reprodoced.
25 [0238]
The wireless cotnmunication interface 933 suppolls any cellular
communication scheme such as LET and LTE-Advanced, and performs wireless
communication. The wireless con~n~anicatioint erface 933 may typically include,
for example, a BB processor 934 and an RF circuit 935. The BB processor 934
30 may perform, for example, encoding/decoding, modulating/demodulating, and
multiplexing/demultiplexing, and performs various types of signal processing for
wireless communication. Meanwhile, the RF circuit 935 may include, for csamplc,
a mixel; a filter, aud an amplifiel; and transmits and receives wireless signals via the
antenna 937. The wireless communication interface 933 may bc a one chip module
having the BB processor 934 and the RF circuit 935 integrated thereon. The
5 wireless co~nmunication interface 933 may include the multiple BB processors 934
and the multiple RF circuits 935, as illustrated in FIG. T4. Although FIG. T4
illustrates the example in which the wireless communication interface 933 includes
the multiple BB processors 934 and the multiple RF circuits 935, the wireless
communication interface 933 nlaji also include a single BB processor 934 or a single
10 RF circuit 935.
[0239]
Fullhermore, in addition to a cellular commonicatio~s~c heme, the \\fireless
communication interface 933 may suppo~at nother type of wireless communication
scheme such as a short-distance wireless communication scheme, a near field
15 cotnmut~ication scheme, and a wireless LAN scheme. In that case, the wireless
communication interface 933 may include the BB processor 934 and the RF circuit
935 for each wireless communication scheme.
[0240]
Each of the antenna switches 936 switches co~luectiou destinations of the
20 antennas 937 among multiple circuits (such as circuits for different wireless
conm~unication schemes) included in the wireless communication interface 933.
[024 1 ]
Each of the antennas 937 includes a single or multiple antenna elements
(such as multiple antenna elements included in an MIA40 antenna), and is used for
25 the wireless commonication interface 933 to transmit aud receive wireless signals.
The car navigation apparatus 920 may include the multiple antennas 937, as
illustrated in FIG. 41. Although FIG. 41 illustrates the example in \vhich the car
~lavigation apparatus 920 includes the multiple antennas 937, the car navigation
apparatus 920 may also include a single antenna 937.
30 [0242]
Furthermore, the car navigation apparatus 920 may include the antenna 937
for each wireless cotunuinication scheme. In that case, the antenna sivitches 936
[nay be omitted from the configuration of the car navigation apparatus 920.
[0243]
The battery 938 supplies power to blocks of the car navigation apparatus
5 920 illustrated in FIG. 41 via feeder lines that are partially shown as dashed lines in
the figure. The battery 938 accumulates power supplied form the vel~icle.
[0244]
In the car navigation apparatus 920 illustrated in FIG. 41, the infannation
acquisition unit 261 and the comtnunication control unit 263 described with
10 reference to FIG. 15 [nay be provided in the wireless communication interface 933.
In one example, the information acquisition unit 261 and the cotnlnunication control
~lnit2 63 may be provided in one BB processor 934 or lnay be provided in t\vo or
more BB processols 934. In addition, at least some of these functions may be
provided in the processor 921. In this regard, the infonnation acquisition unit 271
15 and the com~nunieationc ontrol unit 273 described with reference to FIG. 26 are also
similar to the infonnation acquisition unit 261 and the communication control unit
263, respectively.
[0245]
The technology of the present disclosure [nay also be realized as an in-
20 vehicle system (or a vehicle) 940 including one or more blocks of the car navigation
apparatus 920, the in-vehicle network 941, and a vehicle module 942. The vehicle
tnodule 942 generates vel~icled ata such as vehicle speed, engine speed, and trouble
information, and outputs the generated data to the in-vehicle network 941.
[0246]
25 <<6. Conclusion>>
The etnbodiments of the present disclosure have been described with
reference to FIGS. 1 to 41.
[0247]
According to the elnbodilnents according to the present disclosure, the base
30 station 100 is configured to include the information acquisition nnit and the
cominunication control onit. The information acquisition unit is configured to
acquire the specific information used to specify the PMCI-I of two or inore CCs
including the first CC. The cornnumication control nnit is configured to control the
transmission ofthe specific information on the first CC.
[0248]
5 In addition, according to the embodiments according to the present
disclosure, the terminal device 200 is configored to include the infomiation
acquisition unit and the communication control unit. The information acquisition
unit is configured to acquire the specific information transmitted on the first CC by
the base station 100 as the specific information to be used to specify the PMCH of
10 hvo or more CCs including the first CC. The communication control unit is
configured to specify the PMCH of the CC included in the hwfo or more CCs based
on the specific information.
[0249]
Thus, it is possible to reduce the load on the MBMS for the terminal device
15 200 that supports carrier aggregation.
[0250]
-First Embodiment
In the first embodiment, the specific information is the MCCH scheduling
information for the two or more CCs.
20 [0251]
For example, this makes it possible to reduce the load on MBMS for the
terminal device 200 that supports carrier aggregation. More specificall): for
example, the terminal device 200, even when using hvo or more CCs, may be
configured not to receive and acquire the MCCH scheduling inforn~ation on each of
25 the two or more CCs. For example, the MCCH scheduling information for the hvo
or more CCs can be received and acquired using one CC. Thos, it is possible to
reduce the load on the terminal device 200 to specify the radio resource in which the
MCCI-I is located (i.e. radio kame and subfiamc).
[0252]
30 - Second Embodiment
In the second embodiment, the specific information is the MBSFN area
configuration information for the two or Inore CCs.
[0253]
For example, this nlakes it possible to reduce the load on the MBMS for the
terminal device 200 that suppo~ts carrier aggregation. More specifically, for
5 example, even when two or Inore CCs are used, it is not necessary for the terminal
device 200 to receive and acquire the MBSFN area configuration message for each
of the two or more CCs. For exaunple, the MBSFN area configuration inforn~ation
for the two or more CCs can be received and acquired using one CC. Thus, it is
possible to reduce the load on the tenninal device 200 to specify the PMCH (i.e.
10 subframe allocated to the PMCI-I).
[0254]
Fut.thernlore, it is not necessary for the terminal device 200 to receive and
acquire the MCCH scheduling infonnation on each of the hvo or more CCs, but the
MCCH scheduling infonnation ]nay be received and acquired, for example, using
15 one CC. Thus, the load on the tenninal device 200 can be futther reduced.
[0255]
The preferred embodiment(s) of the present disclosure has/have been
described above with reference to the accompanying drawings, whilst the present
disclosure is not limited to the above examples. A person skilled in the art may find
20 various alterations and nlodifications within the scope of the appended claims, and it
should be undetstood that they will naturally cotne under the technical scope of the
present disclosure.
[0256]
For example, the exatnple in \vhich the co~nlnunication systetn is a systeln
25 compliant with LTE, LTE-Advanced, or comtnunication standards confornling
thereto has been described, but the present disclosure is not limited to the example.
For example, the communication system may be a systeln colnpliant with other
coln~nunications tandards.
[0257]
30 In addition, a conlputer program, which allows hardware such as a processor
(e.g., CPU and DSP) and a memory (e.g., ROM and RAM) provided in the node
described herein (e.g., base station and/or terminal device) to fi~nction as a
component of the node (e.g., inforlnation acquisition unit and communication control
unit) can be created. Furthemlore, a storage tnediu~n used to store the computer
progratn may be provided. Moreover, a device, whic11 is equipped with a memory
5 used to store the computer program and one or more processors (e.g., a processing
circuit, a chip, or a tnodole (in one example, BB processor)) capable of executing the
computer program, may be provided.
[0258]
In addition, the effects described in the present specification are merely
10 illustrative and demonstrative, and not limitative. In other words, the technology
according to the present disclosure can exhibit other effects that are evident to those
skilled in the art along with or instead of the effects based on the present
specification.
[0259]
15 Additionally, the present technology may also be configured as below.
(1)
An apparatus including:
an acqaisition unit configured to acquire specific information used to
specify a physical multicast channel (PMCH) of hvo or Inore cotnponent carriers
20 including a first cotnponent carrier; and
a control unit configured to control transmission of the specific information
on the first component carrier.
(2)
The apparatus according to (I),
26 wherein the specific infortnation is scheduling information of a multicast
control cllannel (MCCH) for the two or more colnponent carriers.
(3)
The apparatus according to (Z),
wherein the scheduling information includes an MCCH offset, an MCCH
30 repetition period, and subfratame allocation information.
(4)
The apparatus according to (2) or (3),
wherein the acquisition unit acquires a predetermined system information
block including the sclieduling infonnation, and
wherein the control unit controls transmission of the predetermined system
5 information block on the first component carrier.
(5)
The apparatus according to (4),
wherein the scheduling information includes one or more pieces of
individual scheduling information, and
10 wherein each ofthe one or more pieces of individual scheduling infor~~latiotl
is scheduling infor~natiorlo f an MCCH for at least one component carrier of the hvo
or more component carriers.
(6)
The apparatus according to (5),
15 wherein the one or tnore pieces of individual scheduling infornlation include
scheduling info~mation that is colntnon behveen at least hvo component carriers
included in the two or more component carriers.
(7)
The apparatus according to (5) or (6),
20 wherein the acquisition unit acquires a predetermined system inforniation
block including the specific information,
wherein the control unit controls transmission of the predetermined systetn
information block on the first component carrier, and
wherein the predetermined systetn itiformation block includes the one or
25 more pieces of individual scheduling infonnation and identification information of a
component carrier corresponding to each of the one or more pieces of individual
scheduling information.
(8)
The apparatus according to any one of (4) to (7),
30 wherein the predetermined system information block further includes
notification infor~llatiotl for the two or more component carriers, the notification
information being used for notifying a terminal device of a location of infomiation
used to indicate a change of an MCCH, and
wherein the notification information includes at least one of a notification
indicator and a notification configuration.
5 (9)
The apparatus according to ( I ) ,
wherein the specific iofomlation is multimedia broadcast multicast services
(MBMS) over a single fiequency network (MBSFN) area configuration infortnation
for the two or Inore component carriers.
10 (10)
The apparatus according to (9),
wherein the control unit control transmission of the MBSFN area
configuration infonnation on an MCCH ofthe first cotnponent carrier.
(11)
15 The apparatus according to (lo),
wherein the MBSFN area configuration infonnation it~clodes one or tnore
MBSFN area configuration tnessages, and
wherein each of the one or more MBSFN area configuration messages is an
MBSFN area configuration tilessage for at least one component carrier of the t\vo or
20 more cotnponent carriers.
(12)
The apparatus according to (1 I),
wherein the one or tnore MBSFN area configuration messages includes an
MBSFN area configuration message that is cotnmon between at least two component
25 carriers included in the two or more cotnponent carriers.
(13)
The apparatus according to (11) or (l2),
wherein the information transmitted on the MCCH includes the one or tnore
MBSFN area configuration messages and identification information of a cotnponetlt
30 carrier corresponding to each of the one or more MBSFN area configuration
(14)
The apparatus according to (lo),
wherein the MBSFN area confignration inforination includes one MBSI7N
area configuration message including one or more pieces of PMCH allocation
5 infonnation, and
wherein each of the one or more pieces of PMCH allocation inforrnation is
PMCH allocation information for at least one colnponent carrier of the two or more
component carriers.
(15)
10 The apparatus according to (14),
wherein each of the one or more pieces of PMCH allocation information
includes at least a PMCH information list.
(16)
The apparatus according to (14) or (15),
15 wherein the one or more pieces of PMCH allocation infonnation include
PMCH allocation infonnation that is cotntnon between at least two component
carriers included in the two or more component carriers.
(17)
The apparatus according to any one of (14) to (16),
20 wherein the one MBSFN area configuration message includes the one or
more pieces of PMCH allocation inforrnation and identification information of a
component carrier corresponding to the one or more pieces of PMCH allocation
information.
(1 8)
25 The apparatus according to any one of (10) to (17),
wherein the MBSFN area confignration information includes information
that indicates a PMCH covering at least two component carriers included in the twvo
01. more co~nponenct arriers.
(19)
30 A method including:
acqniring specific information used to specify a PMCH of twvo or more
component carriers including a first component carrier; and
controlling transmission of the specific information on the first component
carrier by a processor.
(20)
6 An apparatus including:
an acquisition unit configured to acquire specific infonnation transmitted on
a first component carrier by a base station, the specific information beiug used to
specify a PMCH of t\vo or more component carriers itlciuding the first component
carrier; and
10 a control unit configured to specify a PMCH of a component carrier
included in the two or more component carriers based on the specific infonnation.
Reference Signs List
[0260]
15 1 communication system
10 cell
100 base station
151, 161 information acquisition unit
153, 163 communication control unit
20 200 tenninal device
261,271 infonnation acquisition unit
263,273 comtnunicatiot~c ontrol unit
69/74
CLAIMS
Claim 1
An apparatus comprising:
an acquisition unit configured to acquire specific iufor~nation used to
5 specify a physical multicast chan~lel (PMCH) of two or more component carriers
including a first component carrier; and
a control unit configured to control transmission of the specific information
on the first component carrier.
10 Claitn 2
The apparatus according to claim 1,
whereill the specific information is scheduling information of a multicast
control channel (MCCH) for the two or more component carriers.
15 Claim 3
The apparatus according to claim 2,
wherein the scheduling infonnation includes an MCCH offset, an MCCH
repetition period, and subfian~ea llocation infomlation.
20 Clairn 4
The apparatus according to claim 2,
wherein the acquisition unit acquires a predetermined system information
block including the scheduling information, and
wherein the control unit controls transmission of the predetermined system
25 infonnation block on the first component can'ien
Claim 5
The apparatus according to claim 4,
wherein the scheduling infomation includes one or more pieces of
30 individual scheduling infonnation, and
whereill each of the one or more pieces of individual scheduling infomlation
is scheduling information of an MCCI-I for at least one component carries of the two
or Inore cotnponcnt carriers.
Claim 6
The apparatus according to claim 5,
wherein the one or more pieces of individual scheduling information include
scheduling infortnation that is common behveen at least hvo component carriers
included in the hvo or more component carriers.
10 Claitn 7
The apparatus according to claitn 5,
wherein the acquisition unit acquires a predetermined systetn information
block including the specific infonnation,
wherein the control unit controls transmission of the predetermined system
15 information block on the fitst component carrier, and
wherein the predetermined systetn infortnation block includes the one or
motp. pieces of individual scheduling information and identification infonnation of a
cotnponcnt carrier corresponding to each of the one or more pieces of individual
scheduling infortnation.
20
Claim 8
The apparatus according to claim 4,
wherein the predetermined systenl information block fultlier includes
notification information for the two or more component carriers, the notification
25 illfortnation being used for notifjing a tenninal device of a location of information
used to indicate a change of an MCCH, and
wherein the notification information includes at least one of a notification
indicator and a notification configuration.
30 Claim 9
The apparatus according to claim 1,
wherein the specific information is multimedia broadcast multicast services
(MBMS) over a single fi.equency network (MBSFN) area configuration information
for the two or more component carriers.
5 Claim 10
The apparatus according to claitn 9,
wherein the control unit control tra~ismission of the MBSFN area
corifiguration information on an MCCH of the first component carrier.
10 Clairn 11
The apparatus according to claim 10,
wherein the MBSFN area configuration information includes one or more
MBSFN area configuration messages, and
wlierein each of the one or more MBSFN area configuration messages is an
15 MBSFN area configuration message for at least one component carrier of the two or
mole component carriets.
Claim 12
The apparatus according to claim 11,
20 \vhereitl the one or more MBSFN area configuration messages includes an
MBSFN area configuration message that is common between at least two component
carriers included in the two or tnore campotlent carriers.
Claim 13 . .
25 The apparatus accorditlg to claim 11,
wherein the information transmitted on the MCCH includes the one or more
MBSFN area configuration messages and identification information of a component
carrier corresponding to each of the one or tiiore MBSFN area configuratio~~
messages.
30
Claim 14
The apparatus according to claitn 10,
wherein the MBSFN area configoration infornlation includes one MBSFN
area configuration message including one or more pieces of PMCH allocation
infomation, and
5 wherein each of the one or more pieces of PMCH allocatiott information is
PMCH allocation infonnation for at least one componetlt carrier of the two or more
cotnponent carriers.
Claim 15
The apparatus according to claim 14,
wherein each of the one or tnore pieces of PMCI-I allocation information
includes at least a PMCH infonnation list.
Claitn 16
15 The apparatus accorditlg to claim 14,
wherein the one or more pieces of PMCH allocation information include
PMCH allocation information that is common behveen at least hvo component
calriers included in the two or more component carriers.
20 Claim 17
The apparatus according to claim 14,
wherein the one MBSFN area configuration message includes the one or
more pieces of PMCH allocation infortnation and identification infonnation of a
component carrier corresponding to the one or more pieces of PMCH allocation
25 infomation.
Claim 18
The apparatus according to claitn 10,
whereill the MBSFN area configuration information includes information
30 that indicates a PMCH covering at least two component carriers included in the two
or more component carriers.
Claim 19
A method conrprising:
acquiring specific information used to specify a PIvICH of two or Inore
5 conlponent carriers including a first cornponcnt carrier; and
controlling translnission of the specific information on the first conlpo~ient
carrier by a processor.
Claiin 20
10, An apparatus conlprising:
an acquisition unit configured to acquire specific information transmitted on
a first co~nponentc arrier by a base station, the specific information being used to
specify a PMCH of two or Inore conlponent carriers including the first conlponent
' carrier; and
15 a control unit configured to specify a PMCH of a conlponent carrier
included in the two or Inore compot~enct arriers based on the specific information.