Technical field
[0001]
　[Related description of the application]
　The present invention, Japanese Patent Application: is based on Japanese Patent Application No. 2015-077066 (April 3, 2015 application), the entire description of the application document to the built-in described by reference thereto It is assumed to be.
　The present invention is a core network node, base station, mobile station, server, communication system, a paging method and a program.
Background technique
[0002]
　With the advent of smart phones, the mobile communication operator network is enormous data flow, the amount is steadily increasing. There are several reasons for this. That are connected to the Internet are more and more people to download and upload of videos, that the person to contact in the pictures and letters is increasing in the application in which it was installed on a smartphone instead of a voice call function of the smart phone, the maintenance of health heart rate - the management purposes, blood pressure, number of steps, calorie consumption amount, to obtain information, such as sleep time from wearable devices to upload the data, more and more people to download the data in order to receive a service that matches the purpose Being, application and the like that transmit and receive data at all times regardless of the intention of the owner.
[0003]
　In addition, a new factor to spur the increase of data flowing through the network, Internet of Things (also referred to as the "Internet of things". Below, "IoT") efforts that are underway. This built-in communication capabilities to any equipment, it is intended to create value not in until now by controlling. Assignable IP address to the device by the introduction of IPv6 is increased significantly, Machine Type Communication (hereinafter, "MTC") as a device for exchanging information in machine between rather than human beings called terminal can be installed everywhere by became, it is certainly realize IoT is accelerated.
[0004]
　MTC terminal for ease of installation, to send data acquired by radio rather than by wire to another device, such as a server is assumed. And it is also used of course cellular networks not only wireless LAN as a wireless communication network. MTC terminal may receive control information from the network, in this case first Mobility Management Entity (hereinafter "MME") sends a paging message to the MTC terminal. Long Term Evolution (hereinafter, "LTE") in which manages the location of the terminal in units of TAI List (Tracking Area Identity List), paging all having a cell assigned the TAI the MME is included in the TAI the List the Evolved NodeB (base station, hereinafter "eNB") to the. When sending a paging message to Therefore MTC terminal, the paging message to all eNB with cell assigned the same TAI as cell visited the MTC terminal has been transmitted. Each MTC terminal sends periodic data, when a message such as its acknowledgment to the paging message is sent to transmit to MTC, the network is fear that congested in the processing of the paging message ing.
[0005]
　Non-patent Documents 1 and 2, a document relating to the processing of the paging message. Non-patent document 3-6 are 3GPP specifications that may be relevant to the present invention.
CITATION
Non-Patent Document
[0006]
非特許文献1 : ３ＧＰＰ　ＳＡ　ＷＧ２　ＴＤ、“Ｐａｇｉｎｇ　Ｏｐｔｉｍｉｚａｔｉｏｎ　ｆｏｒ　ｔｈｅ　ｌｏｗ　ｍｏｂｉｌｉｔｙ　ｄｅｖｉｃｅｓ”、　Ｓ２－１４１８８４　３ＧＰＰ　ＴＳＧ－ＳＡ－ＷＧ２　Ｍｅｅｔｉｎｇ　＃１０３、２０１４年５月１９－２３日、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/FTP/TSG_SA/WG2_Arch/TSGS2_103_Phoenix/Docs/S2-141884.zip〉
非特許文献2 : ３ＧＰＰ　ＳＡ　ＷＧ２　ＴＤ、“Ｐａｇｉｎｇ　Ｌｏａｄ　Ｒｅｄｕｃｔｉｏｎ”、Ｓ２－１４４２７３　３ＧＰＰ　ＴＳＧ－ＳＡ－ＷＧ２　Ｍｅｅｔｉｎｇ　＃１０６、２０１４年１１月１７－２１日、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/ftp/tsg_sa/WG2_Arch/TSGS2_106_San_Francisco/Docs/S2-144273.zip〉
非特許文献3 : Ｅｖｏｌｖｅｄ　Ｕｎｉｖｅｒｓａｌ　Ｔｅｒｒｅｓｔｒｉａｌ　Ｒａｄｉｏ　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ　（Ｅ－ＵＴＲＡＮ）；　Ｓ１　Ａｐｐｌｉｃａｔｉｏｎ　Ｐｒｏｔｏｃｏｌ　（Ｓ１ＡＰ）　［３ＧＰＰ　ＴＳ３６．４１３　ｖ１２．４．０］、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/ftp/Specs/archive/36_series/36.413/36413-c40.zip〉
非特許文献4 : Ｇｅｎｅｒａｌ　Ｐａｃｋｅｔ　Ｒａｄｉｏ　Ｓｅｒｖｉｃｅ　（ＧＰＲＳ）　ｅｎｈａｎｃｅｍｅｎｔｓ　ｆｏｒ　Ｅｖｏｌｖｅｄ　Ｕｎｉｖｅｒｓａｌ　Ｔｅｒｒｅｓｔｒｉａｌ　Ｒａｄｉｏ　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ　（Ｅ－ＵＴＲＡＮ）　ａｃｃｅｓｓ　［３ＧＰＰ　ＴＳ２３．４０１　ｖ１３．１．０］ 、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/ftp/Specs/archive/23_series/23.401/23401-d10.zip〉
非特許文献5 : Ｅｖｏｌｖｅｄ　Ｕｎｉｖｅｒｓａｌ　Ｔｅｒｒｅｓｔｒｉａｌ　Ｒａｄｉｏ　Ａｃｃｅｓｓ　（Ｅ－ＵＴＲＡ）　ａｎｄ　Ｅｖｏｌｖｅｄ　Ｕｎｉｖｅｒｓａｌ　Ｔｅｒｒｅｓｔｒｉａｌ　Ｒａｄｉｏ　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ　（Ｅ－ＵＴＲＡＮ）；　Ｏｖｅｒａｌｌ　ｄｅｓｃｒｉｐｔｉｏｎ；　Ｓｔａｇｅ　２　［３ＧＰＰ　ＴＳ３６．３００　ｖ１２．４．０］、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/ftp/Specs/archive/36_series/36.300/36300-c40.zip〉
非特許文献6 : Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎ　ｍａｎａｇｅｍｅｎｔ；　Ｓｕｂｓｃｒｉｂｅｒ　ａｎｄ　ｅｑｕｉｐｍｅｎｔ　ｔｒａｃｅ；　Ｔｒａｃｅ　ｃｏｎｔｒｏｌ　ａｎｄ　ｃｏｎｆｉｇｕｒａｔｉｏｎ　ｍａｎａｇｅｍｅｎｔ　［３ＧＰＰ　ＴＳ３２．４２２　ｖ１２．４．０］、［online］、［平成27年3月23日検索］、インターネット〈URL：http://www.3gpp.org/ftp/Specs/archive/32_series/32.422/32422-c40.zip〉
非特許文献7 : Ｅｖｏｌｖｅｄ　Ｕｎｉｖｅｒｓａｌ　Ｔｅｒｒｅｓｔｒｉａｌ　Ｒａｄｉｏ　Ａｃｃｅｓｓ　（Ｅ－ＵＴＲＡ)；　Ｒａｄｉｏ　Ｒｅｓｏｕｒｃｅ　Ｃｏｎｔｒｏｌ　（ＲＲＣ）；　Ｐｒｏｔｏｃｏｌ　ｓｐｅｃｉｆｉｃａｔｉｏｎ　［３ＧＰＰ　ＴＳ３６．３３１　ｖ１２．５．０］、[online]、［平成27年4月1日検索］、インターネット　
Summary of the Invention
Problems that the Invention is to Solve
[0007]
　The amount of the control signal in the network that result in an increase in the number of above-mentioned terminal and the suppression of increase in the processing load of the control signal is desired.
[0008]
　The invention, and the amount of control signals in the network, a core network node that can contribute to the suppression of increase in the processing load of the control signal, the base station, the mobile station, a server, a communication system, to provide a paging method and program for the purpose.
Means for Solving the Problems
[0009]
　According to a first aspect, the core network node comprising a paging candidate storage unit that stores the candidate destination to become the base station of the paging message is provided. The core network node further comprises a base station information storage unit that stores information about the communication capabilities of the candidate of the base station. Paging The core network node further, when performing paging for a given mobile station, from among the candidates of the base station, based on the communication function of the candidate of the base station, to select a range of performing paging provided with a previous selection unit. The core network node further comprises a paging instruction unit that instructs the paging base station corresponding to a range of the selected.
[0010]
　According to a second aspect, to a core network node as described above, the base station transmitting information about the communication capabilities of the candidate of the base station, the mobile station or server is provided.
[0011]
　According to a third aspect, the communication system comprising a core network node as described above is provided.
[0012]
　According to a fourth aspect includes a paging candidate storage unit that stores the candidate base station to send the paging message, the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, the in the core network node, the steps in performing paging for a given mobile station, from among the candidates of the base station, based on the communication function of the candidate of the base station, to select a range for performing paging, the paging method comprising the steps of instructing the paging base station corresponding to the selected range, is provided. The method of a core network node that instructs the paging base station, is tied to a particular machine.
[0013]
　According to a fifth aspect, a computer program for realizing the functions of the core network node is provided. Incidentally, this program may be computer recorded the possible (non-transient of) storage medium read. That is, the present invention can also be embodied as a computer program product.
　Incidentally, the above-mentioned core network node, base station, mobile station, server, each element of the communication system, a paging method and program, respectively contribute to the resolution of the problems described above.
Effect of the invention
[0014]
　According to the present invention, it is possible to contribute to the suppression of increase in the processing load of the quantity and the control signal of the control signal in the network. The present invention also is a core network node shown in the background art, and the amount of control signals in the network, also shall be converted to a core network node with the points in superiority of suppression of increase in the processing load of the control signal ing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.
2 is a diagram showing a configuration of a mobile communication system of the first embodiment of the present invention.
3 is a diagram for a base station of the first embodiment will be described cell configuration of the present invention.
[4] which is an example of base station information held by the MME of the first embodiment of the present invention.
[5], which is an example of terminal information held by the MME of the first embodiment of the present invention.
6 is a sequence diagram showing the operation (acquisition of eNB information) of the first embodiment of the present invention.
Is a sequence diagram showing the FIG. 7 the operation of the first embodiment of the present invention (paging).
8 is a diagram showing an example of a message sent from the eNB in the first embodiment to the MME of the present invention.
9 is a diagram showing an example of a message sent from the eNB in the first embodiment to the MME of the present invention.
[10] FIG 8 is a diagram for describing the information elements included in the message of FIG.
11 is a diagram for a base station of the second embodiment will be described cell configuration of the present invention.
[12] is an example of base station information held by the MME of the second embodiment of the present invention.
13 is a sequence diagram showing the operation (acquisition of eNB information) of the second embodiment of the present invention.
Is a sequence diagram showing the FIG. 14 operation of the second embodiment of the present invention (paging).
15 is a diagram for describing the information elements included in the message sent from the eNB of the second embodiment to the MME of the present invention.
16 is a diagram showing an example of a paging message from MME of the second embodiment to the eNB of the present invention.
17 is a diagram for describing the information elements included in the paging message of FIG.
Is a diagram for explaining the difference between the FIG. 18 second embodiment and the non-patent document 3 of the present invention.
19 is an example of base station information held by the MME of the third embodiment of the present invention.
FIG. 20 is a sequence diagram showing the operation (acquisition of eNB information) of the third embodiment of the present invention.
21 is a sequence diagram showing the operation (paging) of the third embodiment of the present invention.
22 is a diagram showing an example of a message sent from the eNB in the first embodiment to the MME of the present invention.
23 is a diagram showing an example of a message sent from the eNB in the first embodiment to the MME of the present invention.
[24] FIG 22 is a diagram for describing the information elements included in the message of FIG. 23.
Is a diagram for explaining the difference between the third embodiment and the non-patent document 4 in FIG. 25 the present invention.
FIG. 26 is a diagram for explaining a difference between the third embodiment and the non-patent document 4 of the present invention.
FIG. 27 is a diagram for explaining the difference between the third embodiment and the non-patent document 5 of the present invention.
[FIG. 28] is a diagram showing an example of a paging message from MME of the third embodiment in the eNB of the present invention.
Is a diagram for describing the information elements included in the paging message [29] Figure 28.
[FIG. 30] is an example of base station information held by the MME of the fourth embodiment of the present invention.
[FIG. 31] is a sequence diagram showing the operation (acquisition of eNB information) of the fourth embodiment of the present invention.
[FIG. 32] is a sequence diagram showing the operation (paging) of the fourth embodiment of the present invention.
[33] is a diagram showing an example of a message sent from the eNB of the fourth embodiment to the MME of the present invention.
FIG. 34 is a diagram showing an example of a message sent from the eNB of the fourth embodiment to the MME of the present invention.
[35] FIG 33 is a diagram for describing the information elements included in the message of FIG. 34.
[FIG. 36] is a diagram showing an example of a paging message from MME of the fourth embodiment to the eNB of the present invention.
Is a diagram for describing the information elements included in the paging message [37] Figure 36.
[FIG. 38] is an example of base station information held by the MME of the fifth embodiment of the present invention.
[39] is a sequence diagram showing the operation (acquisition of eNB information) of the fifth embodiment of the present invention.
Is a sequence diagram showing the FIG. 40 operation of the fifth embodiment of the present invention (paging).
[FIG. 41] is a diagram showing an example of a message sent from the eNB in the fifth embodiment to the MME of the present invention.
[FIG. 42] is a diagram showing an example of a message sent from the eNB in the fifth embodiment to the MME of the present invention.
[43] FIG 41 is a diagram for describing the information elements included in the message of FIG. 42.
[FIG. 44] is a diagram showing an example of a paging message from MME of the fifth embodiment in the eNB of the present invention.
Is a diagram for describing the information elements included in the paging message [45] Figure 44.
[FIG. 46] is a sixth sequence diagram showing the operation (acquisition of eNB information) of an embodiment of the present invention.
Is a sequence diagram showing the FIG. 47 operation of the sixth embodiment of the present invention (paging).
[FIG. 48] is a diagram for describing the information elements included in the message sent to the MME from the UE in FIG. 45.
FIG 49 is a seventh diagram showing a configuration of a mobile communication system of an embodiment of the present invention.
FIG 50 is a seventh sequence diagram showing the operation (acquisition of eNB information) of an embodiment of the present invention.
Is a sequence diagram showing the Figure 51] Operation of the seventh embodiment of the present invention (paging).
[FIG. 52] is a diagram showing a modification of the paging message of the second embodiment of the present invention.
DESCRIPTION OF THE INVENTION
[0016]
　First with reference to the accompanying drawings for an overview of an embodiment of the present invention will be described. The drawings reference numerals denoted in the this summary is intended for convenience appended to each element as an example to aid understanding and is not intended to be limited to the illustrated embodiment of the present invention.
[0017]
　The present invention, in one embodiment, as shown in FIG. 1, the core network node 100A comprising a paging candidate storage unit 101A, and the base station information storage unit 102A, and the paging destination selecting unit 103A, and a paging instruction unit 104A, the It can be realized by.
[0018]
　The paging candidate storage unit 101A stores the candidate base stations 200A to send the paging message. Candidates for this base station can be used a list of base stations having a cell assigned the TAI included in the TAI the List of the terminal.
[0019]
　Base station information storage unit 102A stores information about the communication capabilities of the candidate of the base station. The communication function, as long as it can exclude the base station of the base station or outside the paged narrow down the time of paging to a specific mobile station is not particularly limited. For example, for each base station, information that can identify the corresponding possible frequency of the base station is maintained. Of course, not only the frequency may hold information such as whether a base station the function corresponding to the communication function of the mobile station as a target is provided.
[0020]
　Paging destination selecting unit 103A, when performing paging for a given mobile station, from among the candidate base stations 200A, based on the communication function of the candidate of the base station, to select a range for performing paging. For example, if the mobile station to be paged is found that only a specific frequency does not correspond, the paging destination selection unit 103A, as paging destination, selects a base station or cell corresponding to said specific frequency to.
[0021]
　Paging instruction unit 104A informs the base station corresponding to the range of the selected, instructs the paging. For example, if the mobile station of the paging target does not correspond only to a particular frequency is known, the paging destination selecting unit 103A, from the base station to send the paging message to said specific frequency It selects the corresponding base station to the paging destination. At this time, the base station or cell which does not correspond to a particular frequency, will be excluded from the paging request destination. Thus, it is possible to reduce the communication load of the core network node 100A and base station 200A. In this case, with respect to the paging number of occurrences for all terminals, as the ratio of the paging to the mobile station which does not comply with a specific frequency to be increased, the effect is improved.
[0022]
[First Embodiment]
　Next, a first embodiment of the present invention with reference to the accompanying drawings. Figure 2 is a diagram showing an example of a configuration of a first mobile communication system according to an embodiment of the present invention. Referring to FIG. 2, MME100, eNB200, eNB210, eNB220 and a mobile communication system including the UE300 is shown.
[0023]
　MME100 includes a transceiver 101, processor 102 and memory unit 103, a node that performs location management of UE 300, call management, such as handover between base stations (one example of the above-mentioned core network nodes). MME100 can communicate with eNB 210, ENB220 and eNB230 and S1AP (S1 Application Protocol). Here MME100 performs transmission and reception processing of the information by transmitting and receiving unit 101 performs a process of generating and analyzing information transmitted and received by the processing unit 102 performs a process for storing information transmitted and received in the storage unit 103. Storage unit 103 corresponds to the paging candidate storage unit 101A and the base station information storage unit 102A described above, transceiver 101 and processor 102 will serve as the paging destination selecting unit 103A, and a paging indicator portion 104A.
[0024]
　(Corresponding to the above base station) eNB 200 ~ 220 each include a transceiver 201, processor 202 and memory 203. eNB 200 ~ 220 transmits and receives messages using the S1AP between MME100. eNB 200 ~ 220 transmits and receives messages using X2AP (X2 Application Protocol) is with another eNB.
[0025]
　Further, eNB 200 ~ 220 via the Uu interface, and can communicate with the UE 300. eNB 200 ~ 220 are respectively subjected to reception processing of information by transmitting and receiving unit 201 performs processing generation and analysis of information to be transmitted and received by the processing unit 202 performs a process for storing information transmitted and received in the storage unit 203.
[0026]
　UE300 includes a transceiver 301, processor 302 and memory 303. UE300 is, eNB as described above (e.g., eNB 200) communicates wirelessly with the. Here, UE 300 performs the process of transmitting and receiving information by transmitting and receiving unit 301 performs processing generation and analysis of information to be transmitted and received by the processing unit 302 performs a process for storing information transmitted and received in the storage unit 303.
[0027]
　Figure 3 is a diagram for explaining a cell base station of the first embodiment is the configuration of the present invention. In the example of FIG. 3, the cell 200-1, 200-2, 200-3 that eNB200 constitutes being operated at all frequencies F0. eNB210 is operating in all likewise cell 210-1 constituting the frequency F0. On the other hand, cell 220-1,220-2,220-3 which eNB220 constitutes being operated at all frequencies F1. In the following description, the frequency F0 is the frequency where the UE300 is MTC terminal corresponds, F1 is The UE300 a MTC terminal MTC terminal other than that did not correspond UE300 is the frequency that support . Here, the frequency F0, F1 both terminals other than MTC terminal may correspond. Incidentally, UE 300 is assumed to be located in the cell 200-1 of the eNB 200.
[0028]
　4, in the above case is an example of base station information held in the storage unit 103 of MME100. In the example of FIG. 4, each available frequency has been stored for eNB 200 ~ 220. How to collect such base station information will be described together with the operation of the embodiment later.
[0029]
　Figure 5 is an example of terminal information held in the storage unit 103 of MME100. In the example of FIG. 5, the UE 300, and the terminal category, corresponding frequency it is stored. Further, in the example of FIG. 5, only the UE300 is registered. This, UE 300 has means that it is selectable terminals paging destination. How to collect such terminal information is described together with the operation of the embodiment later.
[0030]
　Next, the operation of this embodiment with reference to the accompanying drawings. 6, FIG. 7 is a sequence diagram showing the operation of the first embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0031]
　First, referring to FIG. 6, (see the broken line in S110 of FIG. 6) the operation flow will be described to the base station information is obtained from a state where no established S1 connection between the eNB200 and MME100. In this case, eNB 200, to the MME100, S1AP: S1 SETUP sends a REQUEST message (S 111). Incidentally, eNB 210 and eNB220 also operates similarly to that eNB 200. The message in order to establish the S1 connection, the transport network layer: first eNB after the connection has become available (TNL Transport Network Layer) is a message sent to the MME, the details of non-patent document 3 It is described in. By the message, eNB 200 is the MME100, notifies the information element ENB Supporting Frequency the List containing information all frequencies eNB 200 can be used. The details of these information will be described later.
[0032]
　On the other hand, the operation flow when the already established S1 connection between the eNB200 and MME100 (see dashed in S120 of FIG. 6). In this case, eNB 200, to the MME100, S1AP: transmits the ENB CONFIGURATION UPDATE message (S121). Incidentally, eNB 210 and eNB220 also operates similarly to that eNB 200. S1AP: ENB CONFIGURATION details of UPDATE messages are described in Non-Patent Document 3. By the message, eNB 200 is the MME100, notifies the information element ENB Supporting Frequency the List containing information of all frequencies can be used for eNB 200. The details of these information will be described later.
[0033]
　Then, MME100 refers to ENB Supporting Frequency the List of the S1AP received message, eNB 200 and eNB210 is F0, ENB220 stores that are usable F1, the table 103-1 in the storage unit 103 (S131). As described above, here, ENB200,210 corresponds to the frequency F0, ENB220 is information that corresponds to the frequency F1 is to be stored in the storage unit 103 of MME100 (see FIG. 4). This operation corresponds to the base station information acquisition unit.
[0034]
　Will now be described with reference to FIGS. 8 to 10 for the aforementioned information elements eNB Identity and ENB Supporting Frequency List.
[0035]
　8, S1AP: S1 SETUP REQUEST message information element is a diagram showing an example of a (Information Element, hereinafter referred to as "IE"). Further, FIG. 9 is S1AP: a diagram showing an example of the IE ENB CONFIGURATION UPDATE message. Included in both messages, the ENB Supporting Frequency the List, described in detail below.
[0036]
　10, FIG. 8 is a diagram showing details of ENB Supporting Frequency the List 9. In the example of FIG. 10, the ENB Supporting Frequency List, eNB is E-UTRAN Absolute Radio-Frequency Channel Number of all frequencies can be used (hereinafter, "EARFCN") is set (in the upper part of FIG. 10 see the bottom line of the table).
[0037]
　Referring again to FIG. 7, the paging in the present embodiment will be described operation flow when that occurred. A MTC terminal UE300 attempts to connect to MME100 when starting (S132 in FIG. 7). The connection procedure, for example, 150-151 pages Non-Patent Document 5 "18 UE capabilities" reference. MME100 refers to information elements capacity marked the UE300 called UE Radio Capability acquired from UE300 at the S132, the UE300 are classified into the Category 0 (which means that the UE300 is MTC terminal ) and, UE 300 is a frequency that corresponds to stores that the F0 (S133). Here, UE 300 is a terminal that is classified into the Category 0, information indicating that the corresponding frequency is F0 is to be stored in the storage unit 103 of MME100 (see FIG. 5). Note that the UE Radio Capability, are described in 3GPP TS 36.306 version 12.3.0 (especially "4.1 ue-the Category", see "4.3.5 RF parameters").
[0038]
　Thereafter, MME100 receives the incoming request from the 3GPP TS23.682 v13.0.0 a defined MTC-IWF (short for MTC-InterWorkingFunction. Not shown here) to the UE 300 (S134). Whether or not UE for which the incoming request is UE300 can refer to the table 103-UE storing the terminal information shown in FIG. 5, the determination is.
[0039]
　MME100 having received the incoming request, refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-1, the inside of the specified eNB, to see if there are eNB is available frequencies F0 to UE300 corresponds. This identifies that MME100 is an eNB eNB200 the eNB 210 corresponds decides to send a paging message to eNB200 the eNB 210 (S135).
[0040]
　And MME100 sends a paging message to eNB200 the eNB 210 (S136). S1AP: Details of PAGING message are described in Non-Patent Document 3.
[0041]
　Then, eNB 200 and eNB210 transmits a RRC Paging message to the cells are operating in a frequency that is currently used from among the frequency can be used. In the present embodiment, eNB 200 in the cell 200-1, 200-2, 200-3, eNB 210 cell 210-1, the cell 210-2, and transmits a paging message to the cell 210-3 (S137).
[0042]
　As described above, MME100 according to the first embodiment, the eNB to transmit the paging message, from the eNB with cell assigned the TAI included in the TAI the List transmission destination becomes UE in the paging message, eNB selects a paging destination based on the frequency is available (i.e., excluding the corresponding frequencies do not match the eNB of the UE from paging the destination). Therefore, as compared with the case of transmitting a paging message to all eNB with cell assigned the TAI included in the UE of TAI the List to send the paging message, it is possible to reduce significantly the number of paging messages it can. Thus without sensors and integrated with potential paging messages to the MTC terminal that is set throughout the increasing processing load and communication load Uu interface of the communication load and eNB processing load and S1 interfaces MME in a corner, it is avoided to impair the benefits of a normal user.
[0043]
[Second Embodiment]
　Next, a description first second embodiment adds a paging destination selection function in each cell to an embodiment of with reference to the drawings in detail of the present invention. Since the overall configuration is similar to that of the first embodiment, following the difference it will be mainly described. Figure 11 is a diagram for explaining a cell base station of the second embodiment of the present invention constitutes. In this embodiment, the cell 200-1 among the cells eNB200 constitutes the frequency F0, cells 200-2,200-3 is assumed to be operated at the frequency F1. Similarly, the cell 210-1 among the cells eNB210 constitutes frequency F0, cells 210-2,210-3 frequency F1, cell 220-1 among the cells eNB220 constitutes the frequency F0, cells 220-2, 220-3 is assumed to be operating at a frequency F1.
[0044]
　Figure 12 is an example of base station information held by MME100 the second embodiment of the present invention. Referring to FIG. 12, the cells that form the eNB 200 ~ 220, respectively and can store frequency information.
[0045]
　Next, the operation of this embodiment with reference to the accompanying drawings. 13, FIG. 14 is a sequence diagram showing the operation of the second embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0046]
　S410 in FIG. 13 corresponds to S110 in FIG. 6, S420 corresponds to S120 of FIG. 15, S1AP sent to the MME from the eNB according to this embodiment: S1 SETUP REQUEST message or S1AP: ENB CONFIGURATION is a diagram for explaining an information element ENB Supporting Frequency the List included in the UPDATE message. Referring to FIG. 15, the upper of the first embodiment in addition to the information elements ENB Supporting Frequency the List, it contains E-UTRAN CGI (Cell Global ID) as an identifier of the cell (Fig. 15 shown in FIG. 10 see the bottom line of the table).
[0047]
　Then, MME100 refers to ENB Supporting Frequency the List of the S1AP message received, the cell 200-1 among the cells constituting the eNB200 frequency F0, cells 200-2,200-3 frequency F1, eNB 210 is configured cell 210-1 frequency F0 of the cells, the cell 210-2,210-3 cell 220-1 among the cells frequency F1, ENB220 constitutes the frequency F0, cells 220-2,220-3 frequency F1 that you are using, and stores the table 103-2 in the storage unit 103 (S431).
[0048]
　Next, with reference to FIG. 14, it continues to explain the operation flow. S432 from to S434 in FIG. 14 is the same as the S132 in Fig. 7 to S134. MME100 that has received a call request in S434 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-2 of FIG. 12, the inside of the specified eNB, to see if there is eNB with cells can be used to frequency F0 which UE300 corresponds. Here MME100 identifies that the cells corresponding each cell 200-1,210-1,220-1 the eNB 200 ~ 220, to ENB200,210,220, a paging message to identify the cell in which the paging It decides to transmit (S435).
[0049]
　And MME100 sends a paging message to eNB200,210,220 (S436). S1AP: Details of PAGING message are described in Non-Patent Document 3. Figure 16 is S1AP sent in S436: is a diagram showing an example of a PAGING message. Referring to FIG. 16, S1AP: as eNB that receives the PAGING message can identify the cells to send a paging message, is added information element UE Supporting Frequency List.
[0050]
　Figure 17 is a diagram showing details of the information elements UE Supporting Frequency List. In the example of FIG. 17, the UE Supporting Frequency the List, other EARFCN all frequencies UE is available, (see the bottom line of the upper table of FIG. 17) that E-UTRAN CGI is set. eNB200,210,220 identifies the cell which transmits the paging message by referring to the E-UTRAN CGI. Figure 18 is a diagram for explaining the difference between the second embodiment and the non-patent document 3 of the present invention. In short, the "8.5.2 Successful The Operation" of Non-Patent Document 3 process S436 of FIG. 14, (eNB according italics bold letters underlined in FIG. 18, information elements UE Supporting the paging message when detecting frequency the List, it is feasible at the contents adding a cell using the frequency (the paging target)).
[0051]
　Then, eNB 200 ~ 220 are, S1AP respectively received: Referring to UE Supporting Frequency the List of PAGING message, identifies the cell 200-1,210-1,220-1 as cells to send a paging message (S437) . Then eNB200, eNB210, eNB220 each RRC: sending a Paging message to the cell 200-1,210-1,220-1 (S438).
[0052]
　As described above, in the present embodiment, it becomes possible to identify in units of cells rather than a range of paging eNB basis. Thus, the present embodiment can be compared with the first embodiment, further reducing the processing load and communication load Uu interface eNB. Specifically, when applying the method proposed in the first embodiment to the configuration of the second embodiment, eNB 200, eNB 210 and eNB220 are and besides in use available frequencies F0 and F1. Therefore, the cell 200-2 MTC terminal other than UE300 is composed of a frequency that corresponds, cell 200-3, the cell 210-2 and the cell 210-3 and the cell 220-2, to the cell 220-3 also it would send a paging message. That we can further reduce the transmission of such unnecessary paging messages are effective in the second embodiment.
[0053]
[Third Embodiment]
　Next, a base station information, rather than the frequency, stores information for specifying a frequency, to the accompanying drawings third embodiment which is adapted to select the paging destination based on the value It is described in detail with reference to the. Since the overall configuration is similar to that of the first embodiment, following the difference it will be mainly described. In the present embodiment, the frequency F0 is, E-UTRA Operating Band 1 of Table 5.5-1 of 3GPP TS36.101 v12.6.0, the frequency F1 belongs to E-UTRA Operating Band 5.
[0054]
　Figure 19 is an example of base station information held by MME100 the third embodiment of the present invention. Referring to FIG. 19, the eNB 200 ~ 220, respectively and can store E-UTRA Operating Band.
[0055]
　Next, the operation of this embodiment with reference to the accompanying drawings. Figure 20, Figure 21 is a sequence diagram showing the operation of the third embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0056]
　S510 in FIG. 20, S110, S520 of FIG. 6 in S120 basically in FIG match. The difference is, as shown in FIGS. 22 and 23, S1AP: S1 SETUP REQUEST message and S1AP: the ENB CONFIGURATION UPDATE message, a point that contains the information element called ENB Supporting E-UTRA Operating Band Indicator List shown in FIG. 24 . The ENB Supporting E-UTRA Operating Band Indicator List, among the values ​​of the E-UTRA Operating Band of Table 5.5-1 of 3GPP TS36.101 v12.6.0, eNB is available values ​​in list format 1 One or the plurality stored (see the upper table of FIG. 24).
[0057]
　Then, it MME100 refers to the ENB Supporting E-UTRA Operating Band Indicator List of the S1AP received message, eNB 200 and eNB210 the E-UTRA Operating Band 1, eNB220 can be used for E-UTRA Operating Band 5 , and stores the table 103-3 in the storage unit 103 (S531).
[0058]
　Next, referring to FIG. 21, subsequently described operation flow. From S532 of FIG. 21 to S534 receives the result of S532 of the UE connection procedure, MME100 is in S533, except that stores the UE300 is using the E-UTRA Operating Band 1, from S132 in FIG. 7 S134 is the same as that to. MME100 that has received a call request in S534 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-3 of FIG. 19, the inside of the specified eNB, to determine whether UE300 there is eNB available to E-UTRA Operating Band correspond. MME100 Here, by referring to the table 103-3 of FIG. 19, eNB 200 of to 220, with respect to eNB200,210 are usable E-UTRA Operating Band 1, decides to send a paging message ( S535).
[0059]
　Process S535 of FIG. 21, the "19.2.2 S1 Interface Signaling Procedures" in "5.3.4.3 Network Triggered Service Request" and Non-Patent Document 5 Non-Patent Document 4, FIGS 25-27 is a description of italic underlined bold feasible in contents to be added. Incidentally, FIG. 25 and 26, the 3a of the "5.3.4.3 Network Triggered Service Request" in Non-Patent Document 4 (2 places), as the paging policy (Strategy) in MME, it is reported by the eNodeB MTC terminal indicated Operating Band Indicator was that with the addition of a point can be selected paging destination eNodeB by Operating Band support. Figure 27 is obtained by adding the same contents to "19.2.2.1 Paging procedure" section "19.2.2 S1 Interface Signaling Procedures" in Non-Patent Document 5.
[0060]
　And MME100 sends a paging message to eNB200,210 (S536). S1AP: Details of PAGING message are described in Non-Patent Document 3. Figure 28 is S1AP sent in S536: is a diagram showing an example of a PAGING message. Referring to FIG. 28, S1AP: the PAGING message, UE 300 is an information element UE Supporting E-UTRA Operating Band Indicator List for setting that corresponds to the E-UTRA Operating Band 1 has been added.
[0061]
　Figure 29 is a diagram showing details of the information elements UE Supporting E-UTRA Operating Band Indicator List. In the example of FIG. 29, UE Supporting E-UTRA Operating Band Indicator List, similar to FIG. 24, of the value of the E-UTRA Operating Band of Table 5.5-1 of 3GPP TS36.101 v12.6.0, the UE available values ​​is one or more stored in a list format.
[0062]
　Then, ENB200,210 is, S1AP respectively received: Referring to UE Supporting E-UTRA Operating Band Indicator List of PAGING message, constituted by a frequency included in the E-UTRA Operating Band 1 among the frequency currently in use transmitting a RRC Paging message to be that cell. In the present embodiment, eNB 200 in the cell 200-1, 200-2, 200-3, eNB 210 cell 210-1, the cell 210-2, and transmits a paging message to the cell 210-3 (S537).
[0063]
　As described above, in the present embodiment is to use the information elements that different E-UTRA Operating Band Indicator and frequency, it is possible to obtain the same effect as the first embodiment. Incidentally, a combination of the above third embodiment and the second embodiment, it is possible to instruct the paging unit of cells using the E-UTRA Operating Band Indicator.
[0064]
Fourth Embodiment]
　Next, a base station information, rather than the frequency, the fourth embodiment stores information indicating a communication scheme such as a base station, and to select the paging destination based on this information for with reference to the accompanying drawings will be described in detail. Since the overall configuration is similar to that of the first embodiment, following the difference it will be mainly described. In the present embodiment, Duplex mode is Half-Duplex Frequency Division Duplex base station 200 and 210 (hereinafter, HD-FDD), the frequency width of 1.4 MHz, MIMO antenna configuration is 1 × 1, the Duplex mode of eNB220 FDD, frequency width of 20 MHz, MIMO antenna configuration is that the UE300 in 2 × 2 not connectable. Further, like the first, third embodiment, UE 300 is described as being connectable to the base station 200, 210. Note that the MIMO is obtained by omitting the Multiple-Input and Multiple-Output. The example of the information element indicating the communication system or the like of the base station is merely an example, MTC terminal a is UE300 can use Duplex mode and frequency width may be one MIMO configurations other than this.
[0065]
　Figure 30 is an example of base station information held by MME100 the fourth embodiment of the present invention. Referring to FIG. 30, the eNB 200 ~ 220, as described above assumptions, respectively Duplex mode, frequency width, and can store the MIMO configuration.
[0066]
　Next, the operation of this embodiment with reference to the accompanying drawings. Figure 31, Figure 32 is a sequence diagram showing the operation of the fourth embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0067]
　S610 in FIG. 31, S110, S620 of FIG. 6 in S120 basically in FIG match. The difference is, as shown in FIGS. 33 and 34, S1AP: S1 SETUP REQUEST message and S1AP: the ENB CONFIGURATION UPDATE message, a point that contains the information element called ENB Supporting Configuration the List of FIG. 35. The ENB Supporting Configuration List, Duplex mode, the frequency width corresponds to eNB, MIMO antenna configuration is set (see the upper table of FIG. 35).
[0068]
　Then, MME100 refers to ENB Supporting Configuration the List of the S1AP received message, eNB 200 and eNB210 the Duplex mode is HD-FDD, the frequency width 1.4 MHz, MIMO antenna configuration 1 × 1, eNB220 corresponds and has Duplex mode is FDD, frequency width is 20 MHz, and stored in the table 103-4 in the storage unit 103 that MIMO antenna configuration is 2 × 2 (S631).
[0069]
　Next, with reference to FIG. 32, subsequently described operation flow. S632 from to S634 in FIG. 32 receives the result of S632 of the UE connection procedure, MME100 is in S633, Duplex mode is HD-FDD to UE300 is compatible, the frequency width of 1.4 MHz, MIMO antenna configuration 1 except for storing it is × 1, is the same as that from S132 of FIG. 7 to S134. MME100 that has received a call request in S634 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-4 of FIG. 30, the inside of the identified eNB, a base station employing a communication scheme UE300 is compatible, i.e., Duplex mode, the frequency width described above, MIMO to determine whether there are available eNB the antenna configuration. MME100 Here, by referring to the table 103-4 of FIG. 30, among the eNB 200 ~ 220, to Duplex mode, the frequency width UE300 is compatible and can use the MIMO configuration ENB200,210, paging message It decides to send (S635).
[0070]
　And MME100 sends a paging message to eNB200,210 (S636). S1AP: Details of PAGING message are described in Non-Patent Document 3. Figure 36 is S1AP sent in S636: is a diagram showing an example of a PAGING message. Referring to FIG. 36, S1AP: the PAGING message, UE is Duplex mode, the frequency width corresponds, have been added information element UE Supporting Configuration the List for setting to be a MIMO configuration.
[0071]
　Figure 37 is a diagram showing details of the information elements UE Supporting Configuration List. In the example of FIG. 37, UE Supporting Configuration List, similar to FIG. 35, Duplex mode, the frequency width corresponds to UE 300, MIMO antenna configuration is set.
[0072]
　Then, ENB200,210 is, S1AP respectively received: Referring to UE Supporting Configuration the List of PAGING message, Duplex mode is HD-FDD, frequency width of 1.4 MHz, MIMO antenna configurations to cells is 1 × 1 to send a RRC Paging message Te. In the present embodiment, eNB 200 in the cell 200-1, 200-2, 200-3, eNB 210 cell 210-1, the cell 210-2, and transmits a paging message to the cell 210-3 (S637).
[0073]
　As described above, unlike the frequency in the present embodiment, Duplex mode, frequency width, but uses the information element indicating the communication system or the like of the base station, such as MIMO configuration, the same effect as the first embodiment it is possible to obtain. Note that by combining the above fourth embodiment and the second embodiment, Duplex mode, frequency width, it is possible to instruct the paging cell units using a MIMO configuration.
[0074]
Fifth Embodiment]
　Subsequently, as the base station information, rather than the frequency, stores the operation mode as a variant of the communication functions of the base station, a 5 to choose a paging destination based on the value with reference to the drawings in detail embodiments. Since the overall configuration is similar to that of the first embodiment, following the difference it will be mainly described. Operation mode in the present embodiment, ENB220 has taken operation form the base station 200, 210 to communicate only with MTC terminal can not take the operation mode in which only communicate with the MTC terminal performs a communication with the normal terminal and it is taking. Although not shown, both MTC terminal with normal terminal there may be a base station operational modes of carrying out the communication. MTC terminal and the base station operational modes of carrying out communications with normal terminal with the base station and the MTC terminal operation mode in which communications only, for example, including an information element that category0Allowed defined in Non-Patent Document 7 SystemInformationBlockType1 and it may be notified. Further, like the first, third embodiment, UE 300 is described as being connectable to the base station 200, 210.
[0075]
　Figure 38 is an example of base station information held by MME100 the fifth embodiment of the present invention. Referring to FIG. 38, the eNB 200 ~ 220, as described above assumption, which is whether or not each taking operation mode in which only communicate with MTC terminal and can be stored. In the example of FIG. 38, "MTC Only" is set to "Normal Only" but to these may be replaced by a code (e.g., MTC Only = 0, Normal Only = 1), UE category 0 allowed, UE category 0 not allowed, that may be used other representation is a matter of course.
[0076]
　Next, the operation of this embodiment with reference to the accompanying drawings. Figure 39, Figure 40 is a sequence diagram showing operations of the fifth embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0077]
　S710 in FIG. 39, S110, S720 of FIG. 6 in S120 basically in FIG match. The difference is, as shown in FIG. 41 and FIG. 42, S1AP: S1 SETUP REQUEST message and S1AP: the ENB CONFIGURATION UPDATE message, a point that contains the information element called ENB Supproting Capability List shown in FIG. 43. The ENB Supproting Capability List, operation modes can be implemented (Operationg Mode) is set in a list format (see the upper table of FIG. 43).
[0078]
　Then, MME100 refers to ENB Supproting Capability List of the S1AP received message, eNB 200 and eNB210 has taken the operation form of operating as a base station of the MTC terminal-exclusive, ENB220 is a base of general including MTC terminal stored in the table 103-5 in the storage unit 103 that takes an operation mode that operates as a station (S731).
[0079]
　Next, referring to FIG. 40, subsequently described operation flow. S732 from to S734 in FIG. 40 receives the result of S732 of the UE connection procedure, MME100 is in S733, except that stores the UE300 is MTC, is the same as that from S132 of FIG. 7 to S134. MME100 that has received a call request in S734 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-5 of FIG. 38, the inside of the specified eNB, to see if there is eNB take only operation mode in UE300 is compatible. MME100 Here, by referring to the table 103-5 of FIG. 38, among the eNB 200 ~ 220, to eNB200,210 only operates in an operation mode in UE300 is compatible decides to send a paging message (S735). The reason for selecting the eNB200,210 only operates in an operation mode in UE300 of eNB 200 ~ 220 correspond, remove the eNB220 from paged, in order to reduce the associated load.
[0080]
　And MME100 sends a paging message to eNB200,210 (S736). S1AP: Details of PAGING message are described in Non-Patent Document 3. Figure 44 is S1AP sent in S736: is a diagram showing an example of a PAGING message. Referring to FIG. 44, S1AP: the PAGING message, the information element UE Supproting Capability List for setting the operating mode of a UE is added.
[0081]
　Figure 45 is a diagram showing details of the information elements UE Supproting Capability List. In the example of FIG. 45, UE Supproting Capability List, similar to FIG. 43, corresponding to that operation form of UE300 (Operationg Mode) is set.
[0082]
　As described above, unlike the frequency in the present embodiment, using the information element specifying the operation form as a variant of the communication functions of the base station, to obtain the same effect as the first embodiment it can. Incidentally, by combining the embodiment and the second embodiment of the fifth, it is also possible to instruct the paging unit of cells using the operation form.
[0083]
[Sixth Embodiment]
　Next, rather than from the eNB, Non Access Stratum from UE (hereinafter, NAS) sixth embodiment of which is adapted gather frequency information of the cell units from the message detail with reference to the accompanying drawings It will be explained. Since the overall configuration is similar to the second embodiment, following the difference it will be mainly described. In this embodiment, the cell 200-1 among the cells eNB200 constitutes the frequency F0, cells 200-2,200-3 is assumed to be operated at the frequency F1. Similarly, the cell 210-1 among the cells eNB210 constitutes frequency F0, cells 210-2,210-3 frequency F1, cell 220-1 among the cells eNB220 constitutes the frequency F0, cells 220-2, 220-3 is assumed to be operating at a frequency F1.
[0084]
　Next, the operation of this embodiment with reference to the accompanying drawings. Figure 46, Figure 47 is a sequence diagram showing the operation of the sixth embodiment of the present invention. It will now be described with reference to UE 300, the operation of eNB200 and MME100 both FIG.
[0085]
　Referring to FIG. 46, first, UE 300 cell 200-1 to 200-3 of the eNB 200, the cells 210-1 to 210-3 of the eNB 210, receives a signal from the cell 220-1 to 220-3 of ENB220, respectively determining frequencies that in the cell being used (S811).
[0086]
　Next, UE 300 is referred to as a NAS message, the TRACKING AREA UPDATE REQUEST message is one of messages transmitted and received through transparently the eNB200 between UE 300 and MME100, corresponding to ENB Supporting Frequency the List shown in FIG. 15 to send by setting the information element (S812).
[0087]
　Figure 48 shows an example of a TRACKING AREA UPDATE REQUEST message usable in the present embodiment. In the example of FIG. 48, information elements ENB Supporting Frequency the List underlined in FIG end lines are added. In the present embodiment, although the sending information elements corresponding to ENB Supporting Frequency the List with TRACKING AREA UPDATE REQUEST message, the other of the NAS message, may be added similar information elements. Figure 48 of ENB Supporting Frequency List, UE300 cell 200-1 to the eNB200 measured 200-3, cells 210-1 to 210-3 of the eNB 210, is used in the cell 220-1 to 220-3 of eNB220 frequency it is is set in the form of a list.
[0088]
　MME100 refers to ENB Supporting Frequency the List of the NAS message received, the cell 200-1 among the cells constituting the eNB200 frequency F0, cells 200-2,200-3 the cell frequency F1, eNB 210 is configured among cell 210-1 frequency F0, cells 210-2,210-3 cell 220-1 frequency F0 among the cells frequency F1, ENB220 constitutes, cell 220-2,220-3 uses frequency F1 that is, stored in the table 103-2 in the storage unit 103 (S813).
[0089]
　Next, referring to FIG. 47, subsequently described operation flow. S814 from to S820 in FIG. 47 is the same as the S432 in Fig. 14 to S438. MME100 that has received a call request in S816 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100 refers to the table 103-2 of FIG. 12, the inside of the specified eNB, to see if there is eNB with cells can be used to frequency F0 which UE300 corresponds. Here MME100 identifies that the cells corresponding each cell 200-1,210-1,220-1 the eNB 200 ~ 220, to ENB200,210,220, a paging message to identify the cell in which the paging It decides to transmit (S817).
[0090]
　And MME100 sends a paging message to eNB200,210,220 (S818). S1AP: Details of PAGING message are described in Non-Patent Document 3. Paging message transmitted here is the same as that shown in FIG. 16.
[0091]
　Then, eNB 200 ~ 220 are, S1AP respectively received: Referring to UE Supporting Frequency the List of PAGING message, identifies the cell 200-1,210-1,220-1 as cells to send a paging message (S819) . Then eNB200, eNB210, eNB220 each RRC: sending a Paging message to the cell 200-1,210-1,220-1 (S820).
[0092]
　As described above, also in this embodiment does not use the S1AP message to collect base station information, it is possible to obtain the same effect as in the second embodiment.
[0093]
[Seventh Embodiment]
　Next, with reference to the accompanying drawings seventh embodiment which is adapted by using an external server collects UE information including the frequency of the eNB will be described in detail. Figure 49 is a seventh diagram showing a configuration of a mobile communication system of an embodiment of the present invention. Differs from the first embodiment shown in FIG. 2, is arranged accessible external server 900 from both MME100 and UE 300, it has become capable of transmitting information including the frequency of the base station from the UE 300 to the MME is the point.
[0094]
　External server 900 includes a transceiver 901, processor 902 and memory unit 903. External server 900 has a function of receiving the measurement results of the frequency of the base station received from the UE 300, manages. The external server 900, in response to queries from MME100, based on the measurement results of the frequency of the base station has a function to answer the base station to be the paging.
[0095]
　Next, the operation of this embodiment with reference to the accompanying drawings. Figure 50, Figure 51 is a seventh sequence diagram showing the operation of an embodiment of the present invention. Hereinafter, with reference to both FIG UE 300, eNB 200, for explaining the operation of MME100 and external server 900.
[0096]
　Referring to FIG. 50, first, UE 300 cell 200-1 to 200-3 of eNB200 as part of the measurement of the radio information, the cell 210-1 of eNB 210 ~ 210-3, the cell 220-1 to 220-3 of eNB220 receiving a signal, identifying a frequency used in each cell (S1001). Next, UE 300 transmits a measurement result of the radio information to the external server 900 (S1002). Specifically, UE 300 is Minimization of Drive Test (hereinafter, MDT) described in Non-Patent Document 6, etc. When acting as a terminal corresponding to this case, in this case, the measurement results via the UE300 eNB200, MME100 It is transmitted to the external server 900 Te. Incidentally, the form of transmission of the measurement results to the external server 900 from UE300 is not limited thereto, and may be transmitted in any other form. The information sent from UE300 to the external server 900, in addition to the frequency used by eNB, the UE300 longitude, latitude and altitude position information such as the moving speed may include other information such as operation history . The position information and the moving speed can be used as information for identifying a cell that UE300 is located. Further, the moving speed, the operation history can be used as information for estimating whether UE300 is MTC terminal.
[0097]
　Then, the external server 900 stores the received measurement result in the storage unit 903 (S1003). For example, by using a table equivalent to the table 103-1 of FIG. 4, eNB 200 and eNB210 is F0, ENB220 it is stored can be used for F1. Also, the external server 900, the location information, when the moving speed is receiving other information such as the operation history, the external server 900, using a table, and stores the information for each UE.
[0098]
　Next, with reference to FIG. 51, subsequently described operation flow. S1004 from to S1006 in FIG. 51 is the same as the S132 in Fig. 7 to S134. MME100 that has received a call request in S1006 is the external server 900, to specify the UE according to incoming requests, requests to estimate the base stations corresponding to the frequency of the UE 300. External server 900, and the like correlation of information stored in the storage unit 903, and returns the results of estimation with respect MME100 (S1007). For example, the external server 900, based on the frequency that UE300 is compatible, responds with an eNB corresponds to the frequency. At that time, if more narrow down the base station to be paged, the estimation results using information other than this may be returned to MME100. For example, the external server 900, the collected UE 300 longitude, latitude and altitude position information, such as from UE 300, the moving speed, using an operation history from the eNB corresponding to a particular frequency F0, more specific eNB it is possible to answer to MME100 by selecting.
[0099]
　The MME100 received a reply from the external server 900 refers to the location registration information of the UE, and identify the eNB having a cell assigned the TAI included in the TAI the List of UE 300. Furthermore, MME100, based on the information received from the external server 900, the inside of the specified eNB, to see if there is eNB estimated in the external server 900. This identifies that MME100 is an eNB eNB200 the eNB 210 corresponds decides to send a paging message to eNB200 the eNB 210 (S1008).
[0100]
　And MME100 sends a paging message to eNB200 the eNB 210 (S1009). Then, eNB 200 and eNB210 transmits a RRC Paging message to the cells are operating in a frequency that is currently used from among the frequency can be used. In the present embodiment, eNB 200 in the cell 200-1, 200-2, 200-3, eNB 210 cell 210-1, the cell 210-2, and transmits a paging message to the cell 210-3 (S1010).
[0101]
　As described above, the present invention can also be modified and implemented in the form of use of the external server 900. In particular, in the present embodiment, information of the external server 900 (e.g., location information of the UE) can be expected an excellent effect that further narrowed down to the base station or cell to be carried out paging with. In the example of FIG. 51, it has been described that the external server 900 narrows down the base station may perform a part in MME100 side. For example, since MME100 has a function of performing location management of UE, responded candidate base stations external server 900 based on the frequency, the base of the paging destination based on the position and movement history of the UE in MME100 side Filters may be carried out of the station. Further, as described in the embodiment of the third to sixth, the communication function and the operating mode of a base station external server 900 collects in the seventh embodiment, the MME100, based on the information and the information configured to respond to the base station or the like has also be employed.
[0102]
　Having described the embodiments of the present invention, the present invention is not limited to the embodiments described above, without departing from the basic technical concept of the present invention, further modifications, substitutions, and adjustments it can be added. For example, the system configuration shown in the drawings, configurations of components, expressed form of a message is an example to aid in understanding the present invention, is not limited to the configuration shown in the drawings.
[0103]
　Further, FIGS. 1, 2, the core network node shown in FIG. 49 or the like (MME), the base station (eNB), each part of the terminal (UE) (process means), a computer constituting these devices, that hard with wear (processor, memory, storage, etc.), it can also be realized by a computer program for executing each process described above.
[0104]
　In the first embodiment, MME100 but has been described a frequency is available for eNB as being obtained from eNB, these information may be set as office data in advance MME100.
[0105]
　Further, in the second embodiment, eNB has been notified of the frequency composing the cells to send a paging message from MME100, this frequency may be set as the office data of the eNB. For example eNB200 is stored as a frequency that corresponds to the frequency F0 is MTC terminal, S1AP received from MME100: PAGING S-TMSI or Paging DRX in UE Paging Identity contained in the message, such as UE Radio Capability for Paging based on the information, determines that eNB200 is paging message for MTC terminal may send a paging message only to frequencies MTC device supports.
[0106]
　Further, in the present embodiment it has been described mainly assuming application to LTE, the applicable wireless communication system to which the present invention is not limited to LTE. For example, WCDMA (Wideband Code Division Multiple Access) (registered trademark), GSM (global system for mobile communications) (registered trademark), is applicable to other wireless communication systems such CDMA2000, WiMAX (Worldwide Interoperability for Microwave Access).
[0107]
　Further, in the above embodiments, MME, eNB, has been described using a configuration with a UE, it is also applicable to a network of other configurations. For example, small cell gateway, network and comprising Relay node and Donnor eNB, connection called Dual Connectivity means may be applied to a network is achieved.
[0108]
　In the second embodiment described above has been set to PAGING message together ECGI and set of frequencies is a cell identifier the eNB should be paged in the UE Supporting Frequency the List in a list format, Figure 52 only ECGI should be paged may be set in a list format as.
[0109]
　In the fourth embodiment described above, the single of eNB have been described taking an example in which a LTE services, single of the eNB service area composed of a plurality of wireless communication technology called 3G and WLAN simultaneously it is also applicable to a case of providing. In this case, eNB notifies the MME100 the information of the wireless communication system providing at the same time, it is possible MME100 is utilized in determining the destination of the paging message.
[0110]
　Shows the effect of analysis and the present invention is described below with respect to existing proposals according to the background art (Non-Patent Documents 1 and 2). Non-Patent Document 1 proposes to optimize the paging for low mobility terminal. Specifically, Non-Patent Document 1, to identify that the MTC terminal does not move much from the movement history of the MTC terminal, it is proposed to narrow the eNB should send the paging message. However, MTC terminal may also be part of a machine which moves like a car. Terminal operating in an LTE wireless communication system including a MTC terminal takes two kinds of states of Connected mode and Idle mode, the core network when in the latter condition can not identify the location only in units of TAI the List. Therefore, even though elaborate squeezed eNB to transmit a paging message from the movement history of the time was Connected mode, also will fail to send a paging message to the eNB. Finally, you need to send a paging message to all eNB results with cell assigned the TAI included in the TAI the List. According to the present invention, without depending on the state of the terminal, it is possible to suppress the load of processing a paging message in an amount and MME and eNB paging message through the network.
[0111]
　Non-Patent Document 2 proposes a load reduction techniques related paging. Specifically, Non-Patent Document 2, a technique of reducing the processing load and S1 interface of the communication load of MME, eNB processing load and the eNB and MTC terminal radio section between (hereinafter, Uu interface) a communication load of We have proposed a method to reduce each. The former sends a paging message to the eNB MTC terminal has previously used, eNB transfers the paging message to the appropriate eNB via an interface connecting the eNB together called X2 interface, received the eNB a paging message to MTC terminal transmitting (as a result, the decrease also processing load and communication load Uu interface eNB in ​​that eNB is reduced to send a paging message to the MTC terminal). When a parameter called UE Radio Capability in the latter eNB receives from the MTC terminal from which retrieves the information of the UE is available frequencies to generate new information element, and transmits it to the MME. The MME, including the information element in the paging message, sends a paging message to all eNB with cell assigned the TAI included in the TAI the List, eNB sends a paging message to the cell of the corresponding frequency. Similar to non-patent document 1, the former may not work well is clear. The latter is the processing load and Uu interfaces load eNB is reduced, the processing load and S1 interface of the communication load MME to send a paging message to all eNB with cell assigned the TAI included in the TAI the List is not reduced . If the macro base station considers that it has a service area with a radius of several kilometers, the number of MTC terminals present therein without never less, paging to MTC terminal increases the processing load and S1 interface communication load MME It is, Voice-over-LTE to normal terminal (hereinafter, VoLTE) may affect the like incoming is considered to be sufficient. The present invention, the non
[0112]
　Finally, to summarize the preferred embodiment of the present invention.
First Embodiment
　(see core network node according to the first viewpoint)
Second Embodiment]
　In the core network node of the first embodiment,
　information relating to the communication function, a frequency use of candidates of the base station a identifiable information, the paging destination selecting unit, a core network node which the predetermined mobile station selects a pageable base stations or cells in the corresponding frequency.
[Third Embodiment]
　In the core network node of the second embodiment,
　the information element of the message to be exchanged with the base station, retrieves the information for specifying the use frequency of a candidate of the base station, the base station information storage core network node comprises a base station information acquisition unit that stores the parts.
[Fourth Embodiment]
　In the core network node of the first embodiment,
　the information element of the message to be exchanged with the base station, retrieves the information for specifying the use frequency of the cell candidate of the base station, the base station core network node comprises a base station information acquisition unit to be stored in the information storage unit.
[Fifth Embodiment]
　In the core network node of the first embodiment,
　information relating to the communication function, the duplex mode of the candidate of the base station, the frequency width is information including a MIMO configuration, the paging destination selecting unit, core network node which the predetermined mobile station selects a pageable base stations or cells in the corresponding communication method.
Sixth Embodiment
　In the core network node of the first embodiment,
　Information relating to the communication function is information indicating the operating mode of a candidate of the base station, the paging destination selecting unit selects a base station or cell is operating in the operational mode corresponding to the predetermined mobile station core network node.
[Seventh Embodiment]
　In the core network node of the first to sixth any one form,
　instead of the information element of the message to be exchanged with the base station, the information element of the message to be exchanged with the mobile station of the base station core network node to obtain information about the communication capabilities of the candidates.
[Eighth Embodiment]
　In the core network node of any one of Embodiment first to sixth,
　in place of the information element of the message to be exchanged with the base station,
　the information about the communication capabilities of the candidate of the base station from the mobile station via an external server to receive a core network node to obtain information for selecting a range for the paging.
Ninth Embodiment
　(base station according to the second aspect, the mobile station or server reference)
[Tenth Embodiment
　(refer to a communication system according to the third aspect)
[eleventh embodiment]
　(the fourth Referring paging method according to the viewpoint)
twelfth embodiment
　(refer to a computer program according to the fifth aspect)
　It should be noted that the ninth to twelfth embodiment, like the first embodiment, the form of the second to eighth it is possible to deploy to.
[0113]
　The disclosures of Non-Patent Document described above, are incorporated by reference herein. Within the bounds of the full disclosure of the present invention (including the claims), and based on the basic technical concept, it is possible to modify and adjustments of embodiments and examples. Also, various combinations of various disclosed elements within the framework of the disclosure of the present invention (each element of each claim, including the elements of the embodiments or examples, each element of each figure), or can be selected it is. That is, the present invention naturally including the entire disclosure, various modifications will be made by those skilled in the art according to the technical concept, modification and in the appended claims. In particular, for the numerical ranges described herein, any numerical or small range comprised within the range should be construed as specifically described, even if otherwise stated.
DESCRIPTION OF SYMBOLS
[0114]
　100 MME
　100A network core nodes
　101,201,211,221,301,901 transceiver
　101A paging candidate storage unit
　102,202,212,222,302,902 processor
　102A base station information storage unit
　103,203,213,223, 303,903 storage unit
　103-1,103-2,103-3,103-4,103-5,103-UE table
　103A paging destination selection section
　104A paging instruction unit
　200 ~ 220,200A eNB (base
　station) 200- 1 ~ 200-3,210-1 ~ 210-3,220-1 ~ 220-3 cell
　300 UE
　900 external server

The scope of the claims
[Claim 1]
　Paging candidate storage unit that stores the candidate destination to become the base station of the paging message,
　the base station information storage unit that stores information about the communication capabilities of the candidate of the base station,
　implementing paging for a given mobile station when, from among the candidates of the base station, based on the communication function of the candidate of the base station, the paging destination selecting section for selecting a range for paging,
　instructs the paging base station corresponding to a range of the selected a paging instruction unit that,
　the core network node comprising a.
[Claim 2]
　Information relating to the communication function, the a information capable of specifying the used frequency of the base station candidate, the paging destination selecting unit, said predetermined mobile station selects a pageable base stations or cells in the corresponding frequency the core network node according to claim 1.
[Claim 3]
　The information element of the message to be exchanged with the base station, retrieves the information for specifying the use frequency of a candidate of the base station, the core according to claim 2 which comprises a base station information acquisition unit to be stored in the base station information storage unit network node.
[Claim 4]
　The information element of the message to be exchanged with the base station, retrieves the information for specifying the use frequency of the cell candidate of the base station, according to claim 1, further comprising a base station information acquisition unit to be stored in the base station information storage unit core network node of.
[Claim 5]
　Information relating to the communication function, the duplex mode of the candidate of the base station, the frequency width is information including a MIMO configuration, the paging destination selecting unit, pageable base station in a communication system in which the predetermined mobile station corresponding or the core network node of claim 1 for selecting a cell.
[Claim 6]
　Information relating to the communication function is information indicating the operating mode of a candidate of the base station, the paging destination selecting unit selects a base station or cell is operating in the operational mode corresponding to the predetermined mobile station the core network node according to claim 1.
[Claim 7]
　Wherein instead of the information element of the message to be exchanged with the base station, 6 any one of a core network node of claims 1 to obtain information about the communication capabilities of the candidate of the base station from the information element of the message to be exchanged with the mobile station.
[8.]
　Instead of the information element of the message to be exchanged with the base station,
　via an external server to receive information regarding the communication function of the candidate of the base station from the mobile station, according to obtain information for selecting a range for the paging 6 any of the core network node from claim 1.
[Claim 9]
　Implementing paging candidate storage unit that stores the candidate destination to become the base station of the paging message, the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, a paging for a given mobile station when, from among the candidates of the base station, based on the communication function of the candidate of the base station, instructs the paging destination selecting section for selecting a range for paging, a paging base station corresponding to a range of the selected a base station capable of communicating with a core network node, comprising: a paging instruction unit, a to
　the base station to the core network node, for transmitting information about the communication capabilities of the candidate of the base station.
[Claim 10]
　The information regarding the communication function, a base station according to claim 9, which is information capable of specifying the use frequency of a candidate of the base station.
[Claim 11]
　The information element of the message to be exchanged with the core network node, a base station of claim 10, storing the information for specifying the use frequency of a candidate of the base station comprises a base station information transmitting unit that transmits to the core network node .
[Claim 12]
　The base station of claim 9 to be transmitted to the information element of the message to be exchanged with the core network node, the core network node stores the information for specifying the use frequency of the cell candidate of the base station.
[Claim 13]
　The information element of the message to be exchanged with the core network node, the base station according to claim 9 to transmit the duplex mode of the candidate of the base station, frequency width, the core network node stores information including a MIMO configuration.
[Claim 14]
　The base station of claim 9, the information element of the message, and stores information indicating the operating mode of a candidate of the base station transmits to the core network node for exchanging with said core network node.
[Claim 15]
　Implementing paging candidate storage unit that stores the candidate destination to become the base station of the paging message, the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, a paging for a given mobile station when, from among the candidates of the base station, based on the communication function of the candidate of the base station, instructs the paging destination selecting section for selecting a range for paging, a paging base station corresponding to a range of the selected a mobile station capable of communicating with a core network node, comprising: a paging instruction unit, a to
　mobile station to the core network node, for transmitting information about the communication capabilities of the candidate of the base station.
[Claim 16]
　Implementing paging candidate storage unit that stores the candidate destination to become the base station of the paging message, the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, a paging for a given mobile station when, from among the candidates of the base station, based on the communication function of the candidate of the base station, instructs the paging destination selecting section for selecting a range for paging, a paging base station corresponding to a range of the selected a paging instruction section for, a server capable of communicating with a core network node comprising a
　said core to the network node, for selecting a paging range based on the communication function of the candidate of the base station received from the mobile station server to send the information.
[Claim 17]
　Implementing paging candidate storage unit that stores the candidate destination to become the base station of the paging message, the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, a paging for a given mobile station when, from among the candidates of the base station, based on the communication function of the candidate of the base station, instructs the paging destination selecting section for selecting a range for paging, a paging base station corresponding to a range of the selected communication system including a core network node comprising a paging instruction unit, the for.
[Claim 18]
　Paging candidate storage unit that stores the candidate destination to become the base station of the paging message,
　the core network node and a base station information storage unit that stores information about the communication capabilities of the candidate of the base station,
　the mobile predetermined station in performing paging to, from among the candidates of the base station, based on the communication function of the candidate of the base station, selecting a range for paging,
　the base station corresponding to the range of the selected a step of instructing the paging
　paging method comprising.
[Claim 19]
　Paging candidate storage unit that stores the candidate destination to become the base station of the paging message,
　the base station information storage unit that stores information about the communication capabilities of the candidate of the base station, the computer constituting the core network node comprising a ,
　when performing paging for a given mobile station, from among the candidates of the base station, based on the communication function of the candidate of the base station, a process of selecting a range for paging,
　the range in which the selected a process of instructing the paging to the corresponding base station
　program for executing.