WO2017022039A1 - Communication system, apparatus, terminal, communication control method, and program - Google Patents

Communication system, apparatus, terminal, communication control method, and program Download PDF

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Publication number
WO2017022039A1
WO2017022039A1 PCT/JP2015/071881 JP2015071881W WO2017022039A1 WO 2017022039 A1 WO2017022039 A1 WO 2017022039A1 JP 2015071881 W JP2015071881 W JP 2015071881W WO 2017022039 A1 WO2017022039 A1 WO 2017022039A1
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WIPO (PCT)
Prior art keywords
location registration
relay node
terminal
registration area
mrn
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PCT/JP2015/071881
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French (fr)
Japanese (ja)
Inventor
長谷川　聡
拓人 大月
俊康 蔵杉
尚志 田部
敏彦 杉本
慶文 奥田
芹沢　昌宏
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日本電気株式会社
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Priority to PCT/JP2015/071881 priority Critical patent/WO2017022039A1/en
Publication of WO2017022039A1 publication Critical patent/WO2017022039A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies

Definitions

  • the present invention relates to a communication system, apparatus, terminal, method, and program.
  • a mobile relay node (also referred to as a mobile relay node (MRN)) studied in 3GPP (Third Generation Partnership Project) is a base station / access point mounted on a high-speed train, for example, and a donor base station (Donor eNB ( evolved NodeB): DeNB) is connected via a wireless interface to provide a wireless connection service to users in the vehicle (see Non-Patent Document 1).
  • the mobile relay node supports a subset of terminal functions that connect to the donor base station.
  • the mobile relay is at the stage where the study has started and has not yet been studied in detail.
  • the mobile relay trajectory
  • the mobile relay is used for a predetermined one.
  • the terminal is waiting (eg, in RRC (Radio Resource Control) idle state), and the location of the terminal is the location registration area of the evolved packet core (EPC).
  • EPC evolved packet core
  • a location registration area is called a tracking area (TA).
  • the TA is composed of one or a plurality of cells.
  • the base station of each cell uses a broadcast channel and periodically broadcasts, for example, a tracking area identifier (TAI) and the like to which the own cell belongs by SIB (System Information Block) or the like.
  • TAI includes, for example, a mobile communication system identifier (PLMN (Public Land Mobile Mobile Network) identifier) and a tracking area code (Tracking Area Code: TAC).
  • PLMN Public Land Mobile Mobile Network
  • TAC Tracking Area Code
  • the terminal in standby is registered in the tracking area where it is located.
  • the terminal stores the TAI of the tracking area where the current location is registered.
  • the terminal in the idle mode moves from cell to cell, it receives the TAI broadcast from the cell to move to and confirms that there is no change in TA.
  • the terminal accesses the EPC MME (Mobility Management Entity) via the base station and updates the location registration.
  • This location registration update is referred to as “tracking area update” (TAU: Tracking Area Update).
  • the MME performs terminal mobility management (for example, management of which location registration area TA the terminal is in) and authentication, and also performs user authentication in cooperation with an HSS (Home Subscriber Server) that holds subscriber information. .
  • HSS Home Subscriber Server
  • the terminal may control the location registration request: TAU using a tracking area list (TA list) including at least one TA.
  • TA list tracking area list
  • the terminal When the idle terminal moves from the current TA to another TA and the other TA to move to is not included in the TA list held in the terminal, the TAU is transmitted to the MME. In this TAU, the TA information of the destination is set. Note that if the destination TA is included in the TA list held by the terminal, the terminal does not transmit a TAU.
  • the MME receives the TAU from the terminal, the MME selects a TA list including the TA included in the TAU, sets it as a location registration request response signal (Tracking Area Update : Accept: TAU Accept), and transmits it to the terminal.
  • a paging channel (Paging Channel: PCH) is a channel for sending information to all terminals in the cell of the base station, and is one of the control channels.
  • a large number of passenger terminals in a train move all at once as the train moves, and when moving from one TA to another TA, TAUs from many terminals are relayed like mobile relay nodes. If the device exists, it is transmitted directly from the terminals to the network via the mobile relay node. If the device does not exist, the communication traffic of the network temporarily increases significantly. In addition, the processing of MME and HSS (Home Subscriber Server) for managing terminal location registration increases.
  • MME and HSS Home Subscriber Server
  • a moving body such as a train is provided with a relay device, and traffic related to a location registration request (location registration requests are generated all at once when a large number of passengers get on the train all at once) and traffic related to a call request.
  • a configuration for reducing is disclosed.
  • a relay device installed in a moving body such as a train notifies the mobile network (mobile communication network) of the identification numbers of all terminals (mobile communication terminals) subordinate to it together with its own identification number. Update location registration area information in a batch.
  • the relay apparatus receives a collective call request in which call requests for terminals are aggregated, reconfigures the received collective call request, and transmits the call request to each terminal subordinate to itself.
  • Patent Document 1 when a terminal enters the inside of a moving body such as a train, the relay device registers in the mobile communication network that the terminal is subordinate to the moving body.
  • the mobile body uses location registration area information indicating the changed location registration area to which the terminal belongs instead of the terminal accommodated in the mobile body. And register with the mobile communication network.
  • the terminal identification number of each terminal having a subordinate relationship is notified to the mobile communication network together with the location registration of the relay device.
  • Patent Document 2 when a mobile cell that belongs to a mobile access node and is associated with a neighbor cell list moves from the first position to the second position, it is determined whether or not the neighbor cell list needs to be updated.
  • a configuration is disclosed in which a moving cell is included in two sets of adjacent cell lists and a mobile access node is notified of the second set of adjacent cell lists.
  • Patent Document 1 since the location registration area information of the terminals to which the relay devices are subordinated is updated all at once, the total number of TAUs is reduced, but the terminal identification numbers are sent unchanged, so the update request Since the size is increased, similarly, there is a problem that the communication traffic of the network temporarily increases remarkably and the processing load of the MME and HSS increases. Furthermore, management of the subordinate relationship between the relay device and the terminal generated when the terminal gets on and off the train is also a problem.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a system, apparatus, method, and program that can suppress a terminal location registration request on a mobile object. is there.
  • a communication system including a relay node installed in a mobile body, wherein the relay node is at least the relay node with respect to a terminal located in a cell of the relay node.
  • a relay node that is installed in a mobile body and is connected to a mobility management device via a radio station, and at least the relay is connected to a terminal located in a cell of the relay node.
  • a relay node device including means for notifying information of a location registration area provided by a node.
  • a terminal is provided that receives at least information on a location registration area provided by the relay node from a relay node installed in a mobile body.
  • a mobility management device is connected to a relay node installed in a mobile body via a radio station, and receives a location registration request transmitted from the terminal via the relay node.
  • the location registration area information of the terminal As the location registration area information of the terminal, the location registration area information provided by the relay node where the terminal is located is associated with the current location registration area of the relay node as movement location registration area information.
  • a mobility management device including means for storing in a storage unit is provided.
  • a relay node installed in a moving body notifies at least information on a location registration area provided by the relay node to a terminal located in a cell of the relay node.
  • At least a location registration area provided by the relay node is provided to a computer that constitutes a relay node installed in a mobile body with respect to a terminal located in a cell of the relay node.
  • a program for executing a process for notifying information is provided.
  • a location registration request transmitted from a terminal via a relay node to a computer constituting a relay node installed in a mobile body and connected to a mobility management device via a radio station. And the location registration area information provided by the relay node in which the terminal is located as the location registration area information of the terminal, and the current location registration area of the relay node as movement location registration area information And a program for executing processing to be stored in the storage unit.
  • a computer-readable recording medium semiconductor memory, magnetic recording medium, CD (Compact Disk), etc. storage
  • CD Compact Disk
  • FIG. 6 illustrates paging in a second exemplary embodiment of the present invention. It is a figure explaining an example of the operation
  • a relay node Mobile Relay Node: MRN
  • MME mobility management device
  • a relay node (MRN) installed in a mobile unit notifies at least information of a location registration area provided by the relay node to a terminal (UE1) located in the cell of the relay node.
  • the terminal (UE1) entering the cell (TA2) of the relay node (MRN) sends a location registration request: TAU (UE1, TA2) to the mobility management device (MME: 30) via the relay node (MRN). ).
  • location registration area information including the area of the cell of the relay node (MRN) where the terminal (UE1) is located
  • TA2 location registration area information
  • the MRN may notify the terminal belonging to the MTA of a TA list including both TA0 and TA2.
  • the mobility management device When the relay node (MRN) enters a new location registration area (TA1) and receives a location registration request: TAU (MRN, TA1) from the relay node (MRN), the mobility management device (MME) The location registration area of the terminal (UE1) is stored in the storage unit in association with the new location registration area (TA1) and the cell information of the relay node (movement location registration area information: MTA (TA2)). May be. At this time, the mobility management device (MME) rewrites the location registration area TA0 of the terminal (UE1) in which the location registration area MTA is included in the stored location registration area information to TA1. Also good.
  • the location registration area of the terminal includes the area of the cell of the relay node with reference to the storage unit
  • the area information: MTA (TA2) is included
  • a paging signal is notified to the current location registration area (TA1) of the relay node (MRN), and when the relay node (MRN) receives the paging signal, the relay node (MRN)
  • the node (MRN) may be configured to send a paging signal to the cell of the relay node (MRN) to call the terminal.
  • Location registration request: TAU (UE1, TA2) is transmitted to the relay node (MRN), and the relay node (MRN) is included in the location registration request: TAU (UE1, TA2) from the terminal (UE1).
  • the current location registration area information (TA2) of the current terminal is rewritten to the current location registration area information (TA0) of the relay node (MRN) and transmitted to the mobility management device (MME).
  • the mobility management device (MME) may store the location registration area (TA0) of the relay node in the storage unit as the location registration area of the terminal (UE1).
  • the relay node (MRN) MRN when the relay node (MRN) moves to a new location registration area (TA1) and location registration of the relay node (MRN) is required, the relay node (MRN) MRN) sends a location registration request: TAU (MRN, TA1, terminal list) including information on one or more terminals located in the cell of the relay node (MRN) to the mobility management device (MME). You may make it transmit to.
  • the mobility management device (MME) that has received the location registration request may store the new location registration area (TA1) in the storage unit as the location registration area of the one or more terminals. .
  • the location of the relay node (MRN) stored as the location registration area of the terminal is referred to the storage unit
  • the paging signal may be transmitted to the cell of the relay node to call the terminal.
  • the relay node if there is no response from the terminal to the paging signal, the relay node (MRN) communicates with the mobility management device (MME), and You may make it delete from the memory
  • MME mobility management device
  • the mobile device includes a center unit (70) connected to the plurality of relay nodes included in the mobile body, and the same location registration is performed in the cells of the plurality of relay nodes. Area information is allocated, and the center unit (70) associates each of the plurality of terminals located in the cells of the plurality of relay nodes with the relay node in which the terminal is located, in accordance with the storage unit (701). ), And when the paging signal is received from the mobility management device, the paging signal may be distributed to the relay node where the destination terminal is located with reference to the storage unit. According to each aspect of the present invention, it is possible to suppress terminal location registration requests on a moving object.
  • exemplary embodiments will be described.
  • FIG. 1 is a diagram illustrating a first exemplary embodiment.
  • FIG. 2 is a diagram illustrating a typical operation sequence in the location registration according to the first embodiment.
  • numbers in parentheses attached to arrows and the like represent the sequence order and correspond to the sequence numbers in FIG. 2.
  • LTE TA Tracking Area
  • TAU Tracking Area Update
  • TAI Track Area Identity
  • UTRAN Universal Mobile Telecommunication System
  • TA2 is a cell tracking area (TA) provided by the MRN 20 and moves together with the MRN 20.
  • the terminal may be able to recognize that the TA provided by the base station (eNB) and the TA2 provided by the mobile relay node are different, the terminal may not be able to recognize.
  • the areas of the identification numbers of TA and MTA are divided.
  • the terminal 10 in the idle mode gets on a moving body such as a train (1).
  • the terminal 10 in the idle mode enters the cell of the MRN 20 and receives the tracking area identification information TAI (TA2) broadcast from the MRN 20.
  • TAI tracking area identification information
  • the terminal 10 makes a location registration request according to the TAU procedure. That is, when the terminal 10 detects that TA2 is not included in the TA list currently held by the terminal 10, the terminal 10 transmits a location registration request: TAU (UE1, TA2) to the MRN 20 (2).
  • TAU UE1, TA2
  • the MRN 20 relays the location registration request: TAU (UE1, TA2) from the terminal 10 and transmits it to the MME 30 via the donor base station (not shown) (3).
  • the MRN 20 adds, as TA information set in the TAU message, MTA to which information (MTA) indicating that TA2 which is the location registration area information of the MRN 20 is a moving location registration area (Moving Tracking Area: MTA) is added.
  • (TA2) may be set (or converted), and TAU (UE1, MTA (TA2)) may be transmitted to the MME 30.
  • the MRN 20 may store the identification information (UE1) of the terminal 10 that has transmitted the TAU (UE1, TA2) in the storage unit (terminal information storage unit 201 in FIG. 9) in the MRN 20.
  • the terminal 10 uses the mobile tracking area (TA2) of the MRN 20 as information for managing which location registration area the terminal 10 is in.
  • MTA (TA2) indicating presence in the area is stored in the storage unit 301 in association with the current TA0 of the MRN 20 (4).
  • UE1 is identification information of the terminal 10
  • TA0 is identification information TAI of the tracking area TA0.
  • associating cell information of the MRN 20 with the current location registration area: TA0 of the MRN 20, TA0 + MTA (TA2) It expresses. This also indicates that the movement location registration area: MTA (TA2) (the cell TA2 of the MRN 20) is subordinate to the TA 0 in which the MRN 20 is located, that is, included in the next lower layer.
  • the MRN 20 transmits a location registration request TAU when entering the tracking areas TA0 and TA1 for ease of explanation.
  • TA0 and TA1 are stored in the same TA list.
  • the location registration area may belong to (including one or more TAs). In this case, even when the MRN 20 moves from one TA to another TA, the location registration request: TAU is not performed if the other TA is included in the TA list held by the MRN 20.
  • the MME 30 selects a TA list (Tracking Area List) including the MTA (TA2), and transmits a response signal including the selected TA list: TAU ACCEPT to the terminal UE1.
  • the MME 30 may include the TA list (for example, TA0 + MTA (TA2)) to which TA0 is added and transmit it to the MRN 20 in the TAU ACCEPT (5).
  • the terminal 10 receives the TAU ACCEPT (UE1, TA list) from the MME 30, and stores it in a storage unit (not shown) inside the terminal 10. Thereafter, the terminal 10 receives the TAI (TA2) broadcast from the MRN 20, and even if the MRN 20 moves, until the terminal 10 moves out of the cell (movement location registration area: MTA) of the MRN 20 (for example, a train)
  • the terminal 10 does not transmit a location registration request: TAU to the MME 30 by itself until it gets off or there is another vehicle in the movement location registration area that is not included in the TA list (until it moves to that vehicle).
  • the MRN 20 moves to another location registration area TA1 (6).
  • the MRN 20 receives the location registration area information (TAI): TA1 broadcast from the destination cell, and the broadcast location registration area information: TA1 is included in the TA list currently held by the MRN 20.
  • TAU location registration request
  • the MRN 20 transmits a location registration request: TAU (MRN, TA1) to the MME 30 via a donor base station (not shown) (7).
  • the MRN 20 broadcasts the location registration area information TA2 in the cell of the MRN 20.
  • the terminal 10 in which the cell of the MRN 20 moved to the location registration area TA1 receives the location registration area information TA2 broadcast from the MRN 20, but TA2 is included in the TA list currently held by the MRN 20 Therefore, the terminal 10 does not transmit the location registration request: TAU with the reception of TA2.
  • the MME 30 updates the position information of the MRN 20 in the storage unit 301 and stores (MRN, TA1). Further, the MME 30 updates the location registration area information of the terminal 10 (UE1) belonging to the cell of the MRN 20 from TA0 + MTA (TA2) to TA1 + MTA (TA2) with the update of the location registration area of the MRN 20 (8). .
  • the MME 30 selects a TA list including TA1, and transmits a response signal TAU ACCEPT including the TA list to the MRN 20 (9). In the present embodiment, even if the MRN 20 moves to the location registration area TA1, the terminal 10 located in the cell of the MRN 20 does not transmit a TAU.
  • the MRN 20 that has received the location registration request: TAU (UE1, TA2) from the terminal 10 also adds information indicating that TA2, which is the location registration area of the MRN 20, is the movement location registration area: MTA, Location registration request: An example of a configuration in which TAU (UE1, MTA (TA2)) is transmitted to the MME 30 via a donor base station has been described. However, MTA (TA2) is reported as TAI information of the cell of the MRN 20 that the MRN 20 broadcasts.
  • the terminal 10 that enters the cell of the MRN 20 in the idle mode and receives the TAI information transmits a location registration request: TAU (UE1, MTA (TA2)) to the MRN 20, and the MRN 20 transmits the TAU (UE1, MTA (TA2) )) May be relayed to the MME 30 as it is.
  • the MRN 20 may relay the response signal from the MME 30: TAU ACCEPT (UE1, TA list + MTA (TA2)) and transmit it to the terminal 10 as it is.
  • TAI number into a number system indicating a normal TA and a number system indicating a movement location registration area, and to use a number system indicating a movement location registration area as an identifier of the MTA (TA2). is there. This is common in all embodiments.
  • FIG. 3 is a diagram for explaining processing when there is an incoming call addressed to the terminal 10 in the first exemplary embodiment described with reference to FIGS. 1 and 2.
  • the MME 30 refers to the storage unit 301, and the location registration area of the terminal 10 (UE1) is located in the cell of the relay node (MRN) (the movement location registration area MTA (TA2)), and the relay node (MRN) 20 It is recognized that the location registration area is TA1. Therefore, the MME 30 notifies the paging signal to the location registration area: TA1 (or all TAs in the TA list including TA1) (1).
  • the relay node MRN20 located in the location registration area: TA1 receives the paging signal
  • the relay node MRN20 transmits the paging signal to the cell of the MRN 20 and calls the terminal 10 (2).
  • the MRN 20 includes an antenna 207 that wirelessly communicates with a donor base station, an antenna 208 that wirelessly communicates with a terminal in a moving body such as a train, a communication unit 202 that includes a wireless unit (not shown), a baseband unit, a controller, and the like, and a terminal 10
  • the TAU processing unit 203 that receives the mobile registration request TAU from the mobile station and transmits it to the MME 30 via the donor base station, the TAI notification unit 204 that reports the cell information of the MRN 20 as the mobile location registration area information TAI, and the donor from the MME 30
  • a paging processing unit 205 that receives the paging signal received via the base station and broadcasts the paging signal to the cell of the MRN 20 is provided.
  • the terminal information management unit 206 manages the terminal located in the cell of the MRN 20 by the MRN 20 that functions as a base station for the terminal, so that terminal identification information (such as IMSI (International Mobile Subscriber Identity)) Is stored in the storage unit (terminal information storage unit) 201.
  • terminal identification information such as IMSI (International Mobile Subscriber Identity)
  • the processing of the TAU processing unit 203, the TAI notification unit 204, the paging processing unit 205, and the terminal information management unit 206 may be realized by a program that runs on a computer (processor) (not shown) that constitutes the MRN 20.
  • a program is loaded from a memory (HDD (Hard Disk Drive) or semiconductor memory) (not shown) into the computer of the MRN 20, and the program is executed by the computer.
  • the memory that stores the program may be the storage unit 201.
  • the MME 30 includes a communication unit 305 connected to the donor base station, a TAU processing unit 302 that receives a location registration request TAU transmitted from the terminal 10 and the MRN 20 via the donor base station, and a location registration of each of the terminal 10 and the MRN 20.
  • the TA information management unit 303 that manages area (TA) information, the storage unit 301 that stores the location registration area (TA) information of each of the terminal 10 and the MRN 20, and the terminal 10 and the MRN 20 via the donor base station, respectively.
  • a TAU ACCEPT transmission unit 304 that transmits a response (TAU ACCEPT) to the location registration request TAU, and a communication unit 306 that transmits location registration area (TA) information of the terminal 10 to the HSS.
  • the TA information management unit 303 uses the location registration area TA of the terminal 10 as the cell of the MRN 20 (movement location registration area MTA), and the location registration area (MTA) of the MRN 20 in the next higher layer is subordinate.
  • the control unit 307 performs control of each unit, communication control, and the like.
  • the processing of the TAU processing unit 302, the TA information management unit 303, the TAU ACCEPT transmission unit 304, and the like may be realized by a program that operates on a computer (processor) (not shown) that configures the MME 30.
  • a program is loaded into a computer (processor) of the MME 30 from a memory (HDD (Hard Disk Drive) or semiconductor memory), and the program is executed by the computer.
  • the memory for storing the program may be the storage unit 301.
  • the MRN 20 functions as a proxy / NAT (Network Address Translation). That is, when the location registration request: TAU transmitted from the terminal 10 is received in the cell provided by the MRN 20, the MRN 20 rewrites the TAI included in the location registration request: TAU and relays it to the MME.
  • TAU Transmission Control Protocol
  • NAT Network Address Translation
  • FIG. 4 is a diagram illustrating a second exemplary embodiment.
  • FIG. 5 is a diagram illustrating a typical operation sequence of the second embodiment.
  • numbers in parentheses attached to arrows and the like represent the sequence order, and correspond to the sequence numbers in FIG.
  • TA Tracking ⁇ ⁇ ⁇ Area
  • TAU Track Area Update
  • the location registration procedure of the terminal 10 will be described with reference to FIGS. 4 and 5, it is assumed that the MRN 20 is currently in the location registration area TA0 and has already been registered.
  • the MRN 20 has a function of connecting and communicating with a network as a terminal, and also has a function of providing a cell as a base station (eNB) and connecting and communicating with the terminal 1.
  • TA2 is a cell tracking area provided by the MRN 20 and moves together with the MRN 20.
  • the terminal may not be able to distinguish between the TA provided by the normal base station (eNB) and the movement location registration area MTA (the advantage is that the existing terminal can be used as it is).
  • the terminal 10 enters the cell (TA2) provided by the MRN 20 (1).
  • the terminal 10 in the idle mode receives the tracking area identification information TAI (TA2) notified from the MRN 20.
  • TAU tracking area identification information
  • the terminal 10 detects that TA2 is not included in the TA list currently held by the terminal 10, the terminal 10 transmits a location registration request: TAU (UE1, TA2) to the MME (2) .
  • UE1 is identification information of the terminal 10
  • TA2 is identification information TAI of the cell (TA2) of the MRN 20.
  • the MRN 20 Upon receiving the TAU (UE1, TA2) from the terminal 10, the MRN 20 converts the location registration area information TA2 into TA0 where the MRN 20 is located, and transmits it to the MME 30 via a donor base station (not shown) (3).
  • the MRN 20 enters the cell of the MRN 20 simply because, for example, the radio quality is good without being conscious of being the MRN 20.
  • the MRN 20 intervenes as a proxy, rewrites the location registration request: TAU (UE1, TA2) from the terminal 20 to the TAU (UE1, TA1), and then transmits it to the MME 30.
  • the MRN 20 performs signaling between the terminal 10 and the MME 30.
  • the MME 30 stores the terminal (UE1) in association with TA0 in the storage unit 301 (4).
  • 4 shows an example in which the MRN 20 transmits a location registration request TAU when entering the tracking areas TA0 and TA1, for ease of explanation.
  • TA0 and TA1 are assigned to different TAs.
  • the location registration area may belong to a list (including one or more TAs). In this case, when the MRN 20 moves from one TA to another TA, the location registration request is not performed when the other TA is included in the TA list held by the MRN 20.
  • TAU MRN, TA0
  • (MRN, TA0) is already stored in storage device 301.
  • the MME 30 selects a TA list including TA0, and transmits a response signal including the TA list: TAU ACCEPT to the MRN 20 (5).
  • the MRN 20 includes TA2 which is cell information of the MRN 20 in the TAU ACCEPT and transmits it to the terminal 10 (5 ').
  • the MRN 20 may transmit location registration area information obtained by adding TA2 that is the cell information of the MRN 20 to the TA list including TA0 included in the TAU ACCEPT from the MME 20 to the terminal 10 using the TAU ACCEPT.
  • the terminal 10 receives the TAU ACCEPT from the MME 30 and stores it in a storage unit (not shown) inside the terminal 10. Thereafter, the terminal 10 receives the TAI (TA2) broadcast from the MRN 20, and does not need to transmit the location registration request: TAU by itself until the terminal 10 is removed from the cell of the MRN 20, for example.
  • TAI TAI
  • ⁇ Location registration of MRN Batch TAU>
  • the MRN 20 moves from the position registration area TA0 to TA1 (6).
  • the MRN 20 transmits a location registration request: TAU (MRN, TA1) to the MME 30 in accordance with the TAU procedure (when the destination TA1 is not included in the TA list held by the MRN 20).
  • TAU location registration area information
  • the MRN 20 terminates location registration area information (TAI) broadcast from the destination cell in the MRN 20 and does not relay (broadcast) to the terminal 10 located in the cell of the MRN 20. May be.
  • the terminal 10 (terminal in the train) under the control of the MRN 20 does not make a location registration request: TAU from the terminal 10 even if the MRN 20 moves from the location registration area TA1 to TA2.
  • a list of identification information (ID) of subordinate terminals (including UE1) stored in the MRN 20 is included in the TAU message, and a plurality of terminal location registration requests are transmitted by one TAU message transmission. Are collectively transmitted to the MME 30 (7).
  • the collective TAU may be divided into a list of terminals for a certain number of units. In addition to time distribution, it is possible to prevent the size of messages sent at a time from increasing.
  • the MME 30 associates the terminals included in the TAU terminal ID list, the identification information, and TA1, and stores them in the storage unit 301 (8).
  • the TAU may not include information on the location registration area TA2, which is cell information of the MRN 20.
  • the MME 30 selects a TA list including TA1, and transmits a TAU ACCEPT including the TA list to the MRN 20 (9).
  • FIG. 6 is a diagram for explaining paging processing in the second embodiment. With reference to FIG. 6, the process in the case of calling the terminal 10 will be described.
  • the terminal 10 (UE1) is stored in association with the location registration area TA1.
  • the MME 30 receives an incoming call to the terminal 10 and pages the location registration area TA1 (1).
  • the MRN 20 that has received the paging signal: Paging (UE1, TA1) from the MME 30 is a paging signal for the terminal 10 in the subordinate cell (in the train), the paging signal Paging (UE1, TA1) is Relay to the cell provided by the MRN (tracking area is TA2) (2).
  • the MRN 20 that has received the paging signal: Paging (UE1, TA1) from the MME 30 relays the paging signal to the cell under the MRN regardless of whether or not the paging is for the terminal 10 (UE1) stored in the MRN 20 May be. Since the terminal 10 (UE1) exists in the cell: TA2 of the MRN 20, the terminal 10 (UE1) responds to the paging signal relayed by the MRN 20.
  • terminal information deletion processing stored in the MRN 20 will be described.
  • the terminal information deletion process can be applied to the first embodiment in which the MRN 20 stores terminal information in addition to the second embodiment.
  • the terminal 10 After the terminal 10 (UE1) moves to TA3 different from the cell (tracking area is TA2) provided by the MRN 20 such as getting off the train, the terminal 10 transmits TAU (UE1, TA3) to the MME 20.
  • TAU UE1, TA3
  • the MME 30 associates UE1 and TA3 and stores them in the storage unit 301.
  • the MRN 20 in the state where the identification information (UE1) of the terminal 10 is stored in the MRN 20 sends the TAU including the identification information UE1 of the terminal 10 in the terminal list to the MME 30.
  • the MME 30 sends the TAU including the identification information UE1 of the terminal 10 in the terminal list to the MME 30.
  • the MME 30 again stores UE1 in association with TA1. However, even if the MME 30 paging to TA1 in response to an incoming call to the terminal 10, the terminal 10 has already moved from TA2 to another TA3, and thus fails to call the terminal 10.
  • FIG. 7 is a diagram showing an example of the sequence.
  • terminal storage deletion signaling is introduced between the MME 30 and the MRN 20.
  • the MRN 20 is located in the TA1 cell, and the location registration of the MRN 20 is performed with respect to the MME 30 (1, 2).
  • the terminal 10 moves to the cell subordinate to the MRN 20 (3) and performs location registration (4).
  • the MRN 20 stores the terminal 10 (UE1)
  • the MME 30 stores the identification information (UE1) of the terminal 10 and TA1 in association with each other in the storage unit 301.
  • a flag indicating that the terminal 10 is located in the MRN 20 instead of the TA1 cell is provided.
  • the MRN 20 stores the identification information (UE1) of the terminal 10 in the storage unit 201 of the MRN 20 (5).
  • the MME 30 associates the identification information (UE1) of the terminal 10 with the flag flag value: yes / No and stores it in the storage unit 301 (6).
  • the terminal 10 moves from the cell under the control of the MRN 20 to the TA3 cell ( ⁇ TA2) (7).
  • the terminal 10 transmits TAU (UE1, TA3) to the MME 30 (8).
  • the MRN 20 relays the paging signal to the subordinate cell. In this case, since the terminal 10 has already moved to the TA3 cell, the paging response by the terminal 10 does not occur (10).
  • the MRN 30 executes a service request (SERVICE REQUEST) (11), and then the MME 30 starts a signaling procedure for deleting the information of the terminal 10 from the storage unit 201 from the MRN 20 (12). ).
  • the MRN 20 deletes the identification information (UE1) of the terminal 10 from the storage unit 201 of the MRN 20.
  • the MME 30 After completion of the signaling procedure, the MME 30 associates the identification information of the terminal 10 with TA3 and stores it in the storage unit 301 (14).
  • the MME 30 transmits a location registration request: a response TAU ACCEPT to the TAU (UE1, TA3) to the terminal 10 (15).
  • the TAU processing unit 203 uses the identification information (movement position registration area) of the cell of the MRN 20 as the position registration area information in which the MRN 20 is located. (For example, TA0 in FIG. 4) is transmitted to the MME 30 via the donor base station.
  • the terminal information management unit 206 stores, for example, the identification information of the terminal that has made the mobile registration request in the terminal information storage unit 201, and the terminal information between the MME 30 and the terminal that does not respond to paging for the cell of the MRN 20
  • the terminal identification information is deleted from the terminal information storage unit 201 based on the storage deletion signaling.
  • the TA information management unit 303 uses the location registration area information of the terminals located in the cell of the MRN 20 as the location registration area (MTA) of the MRN 20 in the next higher layer as in the first embodiment. It is not stored in the storage unit 301 in association with the area (location registration area on which the MTA is subordinate), but is stored as the location registration area of the MRN 20.
  • the TA information management unit 303 stores the terminal identification information and the flag value in association with each other. Further, when receiving the collective TAU from the MRN 20, the TA information management unit 303 stores the location registration area of the MRN 20 in the storage unit 301 in association with the identification information of each terminal in the terminal list included in the collective TAU. Note that the control unit 307 performs terminal deletion signaling with the MRN 20.
  • the present invention can also be applied to a case where a plurality of MRNs 20 move at the same time, such as when one MRN 20 is installed in each train vehicle.
  • a common TA may be used for cells provided by the plurality of MRNs. The TA does not change even if the terminal moves between a plurality of MRNs. For this reason, the terminal 10 may not perform the location registration request: TAU. For this reason, the TA of the cell in which the destination MRN is located is not associated with the terminal 10 within the MME 30. This may make it impossible to call the terminal. Therefore, it suffices to devise so that the TAs of the cells where the plurality of MRNs 20 are located are all equal.
  • the terminal can be called. However, since TAU is not performed in the MRN to which the terminal 10 is moved, considering that the terminal is not stored, the MRN 20 moves to the cell under the MRN 20 regardless of whether or not the paging is performed for the stored UE. Relay the paging signal. When a plurality of MRNs 20 move at the same time and the TAs in the area change, the collective TAU is performed by the MRN 20 that the terminal 10 has performed TAU.
  • one center unit 70 commonly connected to the plurality of MRNs 20 is arranged as a method for making all the TAs of the cells in which the plurality of MRNs 20 are located equal.
  • the center unit 70 may be representatively configured.
  • center unit 70 is connected to MRN 1 and 2 (20-1 and 20-2) for each of vehicles 60-1 and 60-2, and MRN 1 and 2 (20-1, 20-2). ),
  • the terminal located in the cell (TA2) is stored and managed for each MRN.
  • the center unit 70 is electrically connected to the MRN1 (20-1) and MRN2 (20-2) via a wire 703, and has an antenna 702 that communicates with the donor base station 40.
  • the MME 30 of the core network 50 stores the current location registration area information (TA1) of the MRN as a plurality of MRN1 and MRN2 as one MRN as location registration area information (TA information) of the terminal.
  • the center unit 70 stores the terminals 10 (UE1, UE2) located in the cell (TA2) of the MRN1 (20-1) in the storage unit 701 corresponding to the MRN1, and the MRN2 (20- The terminal 10 (UE3, UE4) located in the cell (TA2) of 2) is stored in the storage unit 701 corresponding to the MRN2.
  • the center unit 70 Refers to the storage unit 701 and recognizes that the terminal (UE1) is located in the cell of MRN1, and sends a paging signal to the cell of MRN1 (20-1) with respect to MRN1 (20-1). Instructs to transmit Paging (UE1, TA2).
  • MRN1 (20-1) calls the terminal (UE1) by broadcasting a paging signal to the cell (TA2).
  • the MRN 20 moves between the location registration area: TA and transmits the location registration request: TAU to the MME 30, the MRN 20 A list of one or a plurality of terminals residing in the cell of the MRN 20 is transmitted, and the location registration update of the plurality of terminals can be performed by one TAU (collective TAU). Also, the MRN 20 that has received the paging signal to the terminal relays it to the subordinate terminal.
  • the terminal since the terminal communicates with the MRN 20 that is close in distance, low power consumption can be realized.
  • the MRN 20 performs TAU in a lump, when the train crosses the TA boundary, it is possible to prevent a phenomenon such that the passenger terminals perform TAU all at once and the load is concentrated on the network.
  • MRN20 is -Conversion of TAI (Tracking Area Identity) in the TAU transmitted from the lower terminal and transmission of the converted TAU to the MME, -Location registration request of MRN20: Insertion of terminal list into TAU (collective TAU), ⁇ Relay to a terminal under paging, Etc.
  • TAI Track Area Identity
  • the MME 30 does not particularly distinguish between TA and MTA (Moving TA) as in the first exemplary embodiment. Therefore, the MME 30 stores and manages the TA in a hierarchy. Is not required. For this reason, the process of the TA information management unit 303 in the MME 30 is simplified.
  • the MME 30 and the MRN 20 are configured to support a signaling procedure for deleting the UE stored in the MRN 20.
  • the terminals under the MRN 20 are divided into groups according to destinations, and a group ID or the like is given to a set of grouped terminals,
  • the relationship between the ID of the MRN 20, the group ID of the terminal set, and the ID of each terminal may be stored and held as a table in the storage unit.
  • the location registration area information (TA information) of each terminal may be managed as the same as the location registration information of the MRN 20.
  • the group may be canceled and location registration management as an individual terminal may be performed.
  • terminal grouping may be performed based on destination information (obtained from ticket information or the like) of a subscriber holding the terminal, for example, with the approval of a subscriber, a railway operator, or the like.
  • TAU location registration requests from a plurality of terminals in the idle mode: TAU
  • TA2 terminal list
  • the mobile unit where the MRN is installed is not limited to trains (high-speed trains), but can be applied to any vehicle (city train, subway, elevated railway, conventional line, car, etc.) that accommodates multiple terminals. It is.
  • the relay node is A communication system characterized by notifying at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
  • (Appendix 2) The communication system according to attachment 1, wherein A mobility management device connected to the relay node via a wireless station; The relay node is Transmitting a location registration request from the terminal that has entered the cell of the relay node to the mobility management device, receiving a response signal to the location registration request from the mobility management device, and included in the response signal of the relay node
  • a communication system characterized by notifying the terminal of information obtained by adding the location registration area information provided by the relay node to location registration area information.
  • the mobility management device When receiving a location registration request transmitted from the terminal via the relay node, As the location registration area information of the terminal, The location registration area information provided by the relay node in which the terminal is located is stored in a storage unit as movement location registration area information in association with the current location registration area of the relay node.
  • the communication system according to Supplementary Note 2 or 3.
  • the mobility management device When a location registration request is received from the relay node that has entered a new location registration area, The location registration area information of the relay node stored in the storage unit is updated in the new location registration area, and the moving location is added to the new location registration area of the relay node as location registration area information of the terminal.
  • the communication system according to appendix 4, wherein registration area information is associated and stored in the storage unit.
  • the mobile management device When the mobile management device receives an incoming call to the terminal, the mobile management device searches the location registration area information of the terminal with reference to the storage unit, When the location registration area information of the terminal includes information on the movement location registration area associated with the location registration area of the relay node, a paging signal is notified to the location registration area of the relay node, 6.
  • the communication system according to appendix 4 or 5, wherein when the relay node receives the paging signal from the mobility management device, the relay node transmits the paging signal to the cell of the relay node and calls the terminal.
  • a relay node installed in a mobile body and connected to a mobility management device via a radio station, A relay node comprising: means for notifying at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
  • a location registration request from the terminal that has entered the cell of the relay node is transmitted to a mobility management device, a response signal to the location registration request is received from the mobility management device, and the location of the relay node included in the response signal
  • a mobility management device that connects to a relay node installed in a mobile body via a radio station, When receiving a location registration request transmitted from the terminal via the relay node, As the location registration area information of the terminal, The location registration area information provided by the relay node in which the terminal is located is provided as means for storing in a storage unit in association with the current location registration area of the relay node as movement location registration area information.
  • a mobility management device characterized by that.
  • a relay node installed in the mobile body A mobility management device connected to the relay node via a radio station; A communication system comprising: The terminal that has moved to the cell of the relay node transmits a location registration request to the relay node, The relay node rewrites the location registration area information included in the location registration request from the terminal to the location registration area information of the relay node, and transmits the location registration area information to the mobility management device.
  • the mobility management device stores a location registration area of the relay node in a storage unit as a location registration area of the terminal.
  • the relay node When the relay node enters a new location registration area and performs location registration, the relay node adds information on one or more terminals located in the cell of the relay node to the location registration request of the relay node. Including the batch transmission to the mobility management device, The mobility management device receives the location registration request of the relay node, and stores the new location registration area as the location registration area information of the one or more terminals included in the location registration request.
  • the communication system according to appendix 14, wherein the communication system is stored.
  • the relay node When there is no response from the terminal to the paging signal, the relay node communicates with the mobility management device and deletes the identification information of the terminal from the storage unit that stores the terminal located in the cell of the relay node
  • the communication system according to supplementary note 16, characterized in that:
  • (Appendix 18) A center unit connected to the plurality of relay nodes included in the mobile body; The same location registration area information is allocated to the cells of the plurality of relay nodes, The center unit is Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located, Any one of appendixes 15 to 17, wherein when the paging signal is received from the mobility management device, the paging signal is distributed to the relay node where the destination terminal is located by referring to the storage unit A communication system according to claim 1.
  • the relay node When the relay node enters a new location registration area and makes a location registration request, the relay node includes information on one or more terminals located in the cell of the relay node in the location registration request, and To the mobility management device, The relay according to claim 19, wherein the mobility management device stores the new location registration area information of the relay node in the storage unit as location registration area information of the one or more terminals. node.
  • the relay node When there is no response from the terminal to the paging signal from the mobility management device, the relay node communicates with the mobility management device, and the terminal is located in the cell of the relay node.
  • the relay node according to appendix 19 or 20, wherein the relay node is deleted from the relay node.
  • a mobility management device that connects to a relay node installed in a mobile body via a radio station,
  • the terminal that has moved to the cell of the relay node transmits a location registration request to the relay node, and the relay node uses the location registration area information of the current terminal included in the location registration request from the terminal as the relay node. Is rewritten to the current location registration area information and sent to the mobility management device,
  • the location registration area of the relay node is stored in a storage unit as the location registration area of the terminal.
  • the relay node When the relay node enters a new location registration area and performs location registration at the relay node, the relay node may request one or more of the relay node's cell in the relay node location registration request. Including terminal information, send to the mobility management device in a batch, The mobility management device that has received a batch location registration request from the relay node stores the new location registration area in the storage unit as location registration area information of the one or more terminals.
  • the mobility management device according to appendix 22.
  • Appendix 25 In the relay node, when there is no response from the terminal to the paging signal, communicate with the mobility management device, 25.
  • the mobility management apparatus according to appendix 24, wherein the mobility management apparatus instructs the relay node to delete from a storage unit that stores a terminal located in a cell of the relay node.
  • a center unit device connected to a plurality of relay nodes included in a mobile body and connected to a mobility management device via a radio station, The same location registration area information is assigned to a plurality of cells of the relay node, The center unit is Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located, When receiving a paging signal from the mobility management device, the center unit device distributes the paging signal to the relay node in which the destination terminal is located by referring to the storage unit.
  • the terminal entering the cell of the relay node transmits a location registration request to the relay node,
  • the relay node rewrites the location registration area information included in the location registration request from the terminal to the current location registration area information of the relay node, and transmits to the mobility management device,
  • the location registration area of the relay node is stored in a storage unit as the location registration area of the terminal.
  • the relay node When the relay node enters a new location registration area and performs location registration at the relay node, the relay node may request one or more of the relay node's cell in the relay node location registration request. Including terminal information, send to the mobility management device in a batch, The communication control method according to appendix 27, wherein the mobility management device stores the new location registration area in the storage unit as location registration area information of the one or more terminals.
  • Appendix 29 In the mobility management device, when there is an incoming call to the terminal, the storage unit is referred to notify a paging signal to the location registration area of the relay node, 29.
  • the relay node When there is no response from the terminal to the paging signal, the relay node communicates with the mobility management device, and deletes the terminal from a storage unit that stores terminals located in the cell of the relay node.
  • the communication control method according to supplementary note 29, wherein:
  • the same location registration area information is assigned to the cells of the plurality of relay nodes included in the mobile body, In the center unit connected to the plurality of relay nodes, Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located, 31.
  • (Appendix 33) Processing for transmitting a location registration request from the terminal that has entered the cell of the relay node to a mobility management device; Receiving a response signal to the location registration request from the mobility management device, and adding the location registration area information provided by the relay node to the location registration area information of the relay node included in the response signal,
  • the program according to attachment 32 which causes the computer to execute a process of notifying a terminal.
  • each cell is connected to a plurality of relay nodes to which the same location registration area information is assigned, and a computer that constitutes a center unit connected to a mobility management device via a radio station, A process of storing each of a plurality of terminals located in a cell of each of the plurality of relay nodes in a storage unit in association with the relay node where the terminal is located, When receiving a paging signal from the mobility management device, referring to the storage unit, a process of allocating the paging signal to the relay node where the destination terminal is located; A program that executes
  • Patent Documents 1 and 2 and Non-Patent Document 1 are incorporated herein by reference.
  • the embodiments and examples can be changed and adjusted based on the basic technical concept.
  • Various disclosed elements can be combined and selected within the scope of the claims of the present invention. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.
  • Terminals 10 Terminals 20, 20-1, 20-2 MRN 30 MME 40 Donor base station 50 Core network 60-1, 60-2 Vehicle 70 Center unit 201 Storage unit (terminal information storage unit) 202 Communication unit 203 TAU processing unit 204 TAI notification unit 205 Paging processing unit 206 Terminal information management unit 207, 208 Antenna 301 Storage unit 302 TAU reception unit 303 TA information management unit 304 TAU ACCEPT transmission unit 305, 306 Communication unit 701 Storage unit

Abstract

The present invention enables suppression of a position registration request from a terminal on a moving object. A relay node installed on the moving object transmits, to a terminal existing in the cell of the relay node, at least information about a position registration area provided by the relay node.

Description

通信システム、装置、端末、通信制御方法並びにプログラムCOMMUNICATION SYSTEM, DEVICE, TERMINAL, COMMUNICATION CONTROL METHOD, AND PROGRAM
　本発明は、通信システムと、装置、端末、方法並びにプログラムに関する。 The present invention relates to a communication system, apparatus, terminal, method, and program.
　３ＧＰＰ（Third Generation Partnership Project）で検討されているモバイルリレーノード（Mobile Relay　Node：MRN）ともいう）は、例えば高速列車等に搭載される基地局／アクセスポイントであり、ドナー基地局（Donor eNB（evolved NodeB）：DeNB)と無線インタフェースで接続し、車両内のユーザに無線接続サービスを提供する（非特許文献１参照）。モバイルリレーノードは、基地局の機能に加えて、ドナー基地局に接続する端末機能のサブセットをサポートする。なお、モバイルリレーは、検討が開始された段階であり、詳細の技術検討にまでは至っていないが、例えば列車など、移動トラジェクトリ（trajectory：軌道）が、予め定められたものを対象として、その上に、モバイルリレーノードを搭載したシナリオ構成を検討している。 A mobile relay node (also referred to as a mobile relay node (MRN)) studied in 3GPP (Third Generation Partnership Project) is a base station / access point mounted on a high-speed train, for example, and a donor base station (Donor eNB ( evolved NodeB): DeNB) is connected via a wireless interface to provide a wireless connection service to users in the vehicle (see Non-Patent Document 1). In addition to the base station functions, the mobile relay node supports a subset of terminal functions that connect to the donor base station. The mobile relay is at the stage where the study has started and has not yet been studied in detail. For example, the mobile relay (trajectory), such as a train, is used for a predetermined one. In addition, we are considering a scenario configuration with mobile relay nodes.
　ＬＴＥ（Long Term Evolution）の仕様によれば、端末が待ち受け中（例：RRC（Radio Resource Control）アイドル状態中）、端末の位置は、発展型パケットコア（Evolved Packet Core: EPC）の位置登録エリアを制御単位として管理される。ＬＴＥでは、位置登録エリアはトラッキングエリア（Tracking Area：TA）という。ＴＡは、１つ又は複数のセルから構成される。 According to LTE (Long （Term Evolution) specifications, the terminal is waiting (eg, in RRC (Radio Resource Control) idle state), and the location of the terminal is the location registration area of the evolved packet core (EPC). Are managed as a control unit. In LTE, a location registration area is called a tracking area (TA). The TA is composed of one or a plurality of cells.
　各セルの基地局は、報知チャネルを用い、例えばＳＩＢ（System Information Block）等により自セルが属するトラッキングエリアの識別子（ＴＡＩ：Tracking Area Identity）等を定期的に報知する。ＴＡＩは、例えば移動通信システム識別子（PLMN（Public Land Mobile Network ）識別子）とトラッキングエリアコード（Tracking Area Code: TAC)で構成される。 The base station of each cell uses a broadcast channel and periodically broadcasts, for example, a tracking area identifier (TAI) and the like to which the own cell belongs by SIB (System Information Block) or the like. The TAI includes, for example, a mobile communication system identifier (PLMN (Public Land Mobile Mobile Network) identifier) and a tracking area code (Tracking Area Code: TAC).
　待ち受け中（アイドルモード）の端末は、在圏するトラッキングエリアに位置登録している。端末は、現在位置登録しているトラッキングエリアのＴＡＩを記憶している。アイドルモードの端末はセルを移動すると、移動先のセルから報知されているＴＡＩを受信し、ＴＡに変化がないかを確認する。報知されているＴＡＩが、端末に記憶されているＴＡＩと異なる場合、前記端末は、基地局を介して、ＥＰＣのＭＭＥ（Mobility Management Entity）にアクセスし位置登録の更新を行う。この位置登録の更新を「トラッキングエリアアップデート」（TAU: Tracking Area Update）という。ＭＭＥは、端末の移動管理（例えば端末がどの位置登録エリアＴＡにいるか等の管理）や認証を行うとともに、加入者情報を保持するＨＳＳ（Home Subscriber Server）と連携してユーザの認証等を行う。 The terminal in standby (idle mode) is registered in the tracking area where it is located. The terminal stores the TAI of the tracking area where the current location is registered. When the terminal in the idle mode moves from cell to cell, it receives the TAI broadcast from the cell to move to and confirms that there is no change in TA. When the broadcasted TAI is different from the TAI stored in the terminal, the terminal accesses the EPC MME (Mobility Management Entity) via the base station and updates the location registration. This location registration update is referred to as “tracking area update” (TAU: Tracking Area Update). The MME performs terminal mobility management (for example, management of which location registration area TA the terminal is in) and authentication, and also performs user authentication in cooperation with an HSS (Home Subscriber Server) that holds subscriber information. .
　なお、端末では、少なくとも１つのＴＡを含むトラッキングエリアリスト（ＴＡリスト）を用いて位置登録要求：ＴＡＵを制御するようにしてもよい。アイドル状態の端末が現在のＴＡから他のＴＡに移動し、移動先の他のＴＡが、端末内に保持されているＴＡリストに含まれない場合、ＴＡＵをＭＭＥに送信する。このＴＡＵには、該移動先のＴＡ情報が設定される。なお、移動先のＴＡが、端末で保持するＴＡリスト内に含まれている場合、端末は、ＴＡＵを送信しない。ＭＭＥは、端末からＴＡＵを受信すると、該ＴＡＵに含まれるＴＡを含むＴＡリストを選択し、位置登録要求の応答信号（Tracking Area　Update Accept：TAU Accept）に設定し、端末に送信する。 Note that the terminal may control the location registration request: TAU using a tracking area list (TA list) including at least one TA. When the idle terminal moves from the current TA to another TA and the other TA to move to is not included in the TA list held in the terminal, the TAU is transmitted to the MME. In this TAU, the TA information of the destination is set. Note that if the destination TA is included in the TA list held by the terminal, the terminal does not transmit a TAU. When the MME receives the TAU from the terminal, the MME selects a TA list including the TA included in the TAU, sets it as a location registration request response signal (Tracking Area Update ： Accept: TAU Accept), and transmits it to the terminal.
　端末に対する着信に応答して、ＭＭＥは、端末が在圏する位置登録エリアを構成するすべてのセルに対してページングを行う。ページングチャネル（Paging Channel：PCH）は基地局のセル内にいる全端末に情報を送るチャネルであり、制御チャネルの１つである。 In response to an incoming call to the terminal, the MME performs paging for all cells constituting the location registration area where the terminal is located. A paging channel (Paging Channel: PCH) is a channel for sending information to all terminals in the cell of the base station, and is one of the control channels.
　列車内の大量の乗客の端末は、列車の移動に伴って一斉に移動し、一のＴＡから他のＴＡに跨って移動する場合、多数の端末からのＴＡＵが、モバイルリレーノードのような中継装置が存在すれば、モバイルリレーノードを介して、存在しなければ各端末から直接、ネットワークに送信されることで、ネットワークの通信トラヒックが一時的に著しく増大する。また、端末の位置登録を管理するＭＭＥ及びＨＳＳ（Home Subscriber Server）の処理が増大する。 A large number of passenger terminals in a train move all at once as the train moves, and when moving from one TA to another TA, TAUs from many terminals are relayed like mobile relay nodes. If the device exists, it is transmitted directly from the terminals to the network via the mobile relay node. If the device does not exist, the communication traffic of the network temporarily increases significantly. In addition, the processing of MME and HSS (Home Subscriber Server) for managing terminal location registration increases.
　なお、特許文献１には、列車等の移動体に中継装置を備え、位置登録要求に関するトラヒック（多数の乗客が列車に一斉に乗車時に位置登録要求が一斉に発生する）及び呼出要求に関するトラヒックを削減するための構成が開示されている。列車等の移動体に設置された中継装置が、自己の識別番号とともに、自己に従属するすべての端末（移動通信端末）の識別番号をモバイルネットワーク（移動通信網）に通知することによって、端末の位置登録エリア情報の更新を一括で行う。中継装置は、端末に対する呼出要求を集約した一括呼出要求を受信し、受信した一括呼出要求を再構成し、自己に従属するそれぞれの端末に呼出要求を送信する。 In Patent Document 1, a moving body such as a train is provided with a relay device, and traffic related to a location registration request (location registration requests are generated all at once when a large number of passengers get on the train all at once) and traffic related to a call request. A configuration for reducing is disclosed. A relay device installed in a moving body such as a train notifies the mobile network (mobile communication network) of the identification numbers of all terminals (mobile communication terminals) subordinate to it together with its own identification number. Update location registration area information in a batch. The relay apparatus receives a collective call request in which call requests for terminals are aggregated, reconfigures the received collective call request, and transmits the call request to each terminal subordinate to itself.
　上記特許文献１において、端末は列車等移動体の内部に入ると、当該端末が前記移動体に従属することを、前記中継装置が、前記移動通信網に登録する。前記移動体が属する位置登録エリアに変更があった場合、前記移動体は、前記移動体に収容されている端末の代わりに、前記端末が属する変更後の位置登録エリアを示す位置登録エリア情報を、前記移動通信網に登録する。移動体がある位置登録エリアから他の位置登録エリアに移動した時に、中継装置の位置登録と併せて、従属関係にある各端末の端末識別番号を移動通信網に対して報知する。 In Patent Document 1, when a terminal enters the inside of a moving body such as a train, the relay device registers in the mobile communication network that the terminal is subordinate to the moving body. When there is a change in the location registration area to which the mobile body belongs, the mobile body uses location registration area information indicating the changed location registration area to which the terminal belongs instead of the terminal accommodated in the mobile body. And register with the mobile communication network. When the mobile body moves from one location registration area to another location registration area, the terminal identification number of each terminal having a subordinate relationship is notified to the mobile communication network together with the location registration of the relay device.
　特許文献２には、移動アクセスノードに帰属し、隣接セルリストに関連付けられる移動セルが第１の位置から第２の位置へ位置移動すると、隣接セルリストの更新が必要か否か判断し、第２セットの隣接セルリストに移動セルを含め、移動アクセスノードに第２セットの隣接セルリストに通知する構成が開示されている。 In Patent Document 2, when a mobile cell that belongs to a mobile access node and is associated with a neighbor cell list moves from the first position to the second position, it is determined whether or not the neighbor cell list needs to be updated. A configuration is disclosed in which a moving cell is included in two sets of adjacent cell lists and a mobile access node is notified of the second set of adjacent cell lists.
特開２００６－１５７９５７号公報JP 2006-157957 A 米国特許出願公開第２０１５／０１６３７１１号明細書US Patent Application Publication No. 2015/0163311
　前述したように、列車等の移動体が一のＴＡから他のＴＡに跨って移動する場合、列車の多数の乗客の端末からのＴＡＵがモバイルリレーノード、ドナー基地局を介してＭＭＥに送信され、ネットワークの通信トラヒックが一時的に著しく増大し、ＭＭＥ及びＨＳＳの処理負荷が増大する、という問題がある。 As described above, when a moving body such as a train moves from one TA to another TA, TAUs from terminals of many passengers of the train are transmitted to the MME via the mobile relay node and the donor base station. However, there is a problem that the communication traffic of the network is significantly increased temporarily, and the processing load of the MME and the HSS is increased.
　特許文献１においても、中継装置が従属関係にある端末の位置登録エリア情報の更新を一括して行われるため、ＴＡＵの総数は減るが、端末の識別番号は変わらず送られるため、更新要求のサイズは大きくなるため、同様にネットワークの通信トラヒックが一時的に著しく増大し、ＭＭＥ及びＨＳＳの処理負荷が増大する、という問題がある。さらに、端末の列車等への乗降に伴い発生する中継装置と端末との従属関係の管理についても課題となる。 Also in Patent Document 1, since the location registration area information of the terminals to which the relay devices are subordinated is updated all at once, the total number of TAUs is reduced, but the terminal identification numbers are sent unchanged, so the update request Since the size is increased, similarly, there is a problem that the communication traffic of the network temporarily increases remarkably and the processing load of the MME and HSS increases. Furthermore, management of the subordinate relationship between the relay device and the terminal generated when the terminal gets on and off the train is also a problem.
　本発明は、上記課題を解決するための創案されたものであって、その目的は、移動体上での端末の位置登録要求を抑制可能とするシステム、装置、方法、プログラムを提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a system, apparatus, method, and program that can suppress a terminal location registration request on a mobile object. is there.
　本発明の１つの側面によれば、移動体に設置されたリレーノードを備えた通信システムであって、前記リレーノードは、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する通信システムが提供される。 According to one aspect of the present invention, there is provided a communication system including a relay node installed in a mobile body, wherein the relay node is at least the relay node with respect to a terminal located in a cell of the relay node. Provides a communication system for notifying information of a location registration area provided by.
　本発明の他の側面によれば、移動体に設置され、無線局を介して移動管理装置に接続するリレーノードであって、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する手段を備えたリレーノード装置が提供される。本発明のさらに別の側面によれば、移動体に設置されたリレーノードから、少なくとも前記リレーノードが提供する位置登録エリアの情報を受信する、端末が提供される。 According to another aspect of the present invention, there is provided a relay node that is installed in a mobile body and is connected to a mobility management device via a radio station, and at least the relay is connected to a terminal located in a cell of the relay node. There is provided a relay node device including means for notifying information of a location registration area provided by a node. According to still another aspect of the present invention, a terminal is provided that receives at least information on a location registration area provided by the relay node from a relay node installed in a mobile body.
　本発明の他の側面によれば移動体に設置されたリレーノードに無線局を介して接続する移動管理装置であって、前記端末から前記リレーノードを介して送信された位置登録要求を受信すると、前記端末の位置登録エリア情報として、前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する手段を備えた移動管理装置が提供される。 According to another aspect of the present invention, a mobility management device is connected to a relay node installed in a mobile body via a radio station, and receives a location registration request transmitted from the terminal via the relay node. As the location registration area information of the terminal, the location registration area information provided by the relay node where the terminal is located is associated with the current location registration area of the relay node as movement location registration area information. A mobility management device including means for storing in a storage unit is provided.
　本発明の他の側面によれば、移動体に設置されたリレーノードが、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する通信制御方法が提供される。 According to another aspect of the present invention, communication in which a relay node installed in a moving body notifies at least information on a location registration area provided by the relay node to a terminal located in a cell of the relay node. A control method is provided.
　本発明のさらに他の側面によれば、移動体に設置されたリレーノードを構成するコンピュータに、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する処理を実行させるプログラムが提供される。 According to still another aspect of the present invention, at least a location registration area provided by the relay node is provided to a computer that constitutes a relay node installed in a mobile body with respect to a terminal located in a cell of the relay node. A program for executing a process for notifying information is provided.
　本発明のさらに他の側面によれば、移動体に設置され、無線局を介して移動管理装置に接続するリレーノードを構成するコンピュータに、端末から前記リレーノードを介して送信された位置登録要求を受信する処理と、前記端末の位置登録エリア情報として、前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する処理と、を実行させるプログラムが提供される。 According to still another aspect of the present invention, a location registration request transmitted from a terminal via a relay node to a computer constituting a relay node installed in a mobile body and connected to a mobility management device via a radio station. And the location registration area information provided by the relay node in which the terminal is located as the location registration area information of the terminal, and the current location registration area of the relay node as movement location registration area information And a program for executing processing to be stored in the storage unit.
　本発明によれば、前記プログラムを記録したコンピュータ読み出し可能な記録媒体（半導体メモリや、磁気記録媒体、CD（Compact Disk）等のストレージ）が提供される。 According to the present invention, a computer-readable recording medium (semiconductor memory, magnetic recording medium, CD (Compact Disk), etc. storage) in which the program is recorded is provided.
　本発明によれば、移動体上での端末の位置登録要求を抑制可能としている。 According to the present invention, it is possible to suppress terminal location registration requests on a mobile object.
本発明の第１の例示的な実施形態を説明する図である。It is a figure explaining the 1st exemplary embodiment of the present invention. 本発明の第１の例示的な実施形態の動作シーケンスの一例を説明する図である。It is a figure explaining an example of the operation | movement sequence of the 1st exemplary embodiment of this invention. 本発明の第１の例示的な実施形態のページングを説明する図である。It is a figure explaining the paging of the 1st exemplary embodiment of the present invention. 本発明の第２の例示的な実施形態を説明する図である。It is a figure explaining the 2nd exemplary embodiment of the present invention. 本発明の第２の例示的な実施形態の動作シーケンスの一例を説明する図である。It is a figure explaining an example of the operation | movement sequence of the 2nd exemplary embodiment of this invention. 本発明の第２の例示的な実施形態のページングを説明する図である。FIG. 6 illustrates paging in a second exemplary embodiment of the present invention. 本発明の第２の例示的な実施形態の動作シーケンスの一例を説明する図である。It is a figure explaining an example of the operation | movement sequence of the 2nd exemplary embodiment of this invention. 本発明の第２の例示的な実施形態の変形例を説明する図である。It is a figure explaining the modification of the 2nd exemplary embodiment of this invention. 本発明の実施形態のＭＲＮを説明する図である。It is a figure explaining MRN of the embodiment of the present invention. 本発明の実施形態のＭＭＥを説明する図である。It is a figure explaining MME of the embodiment of the present invention.
　本発明の実施形態について以下に説明する。本発明のいくつかの形態の一つによれば、列車等の移動体に設置されたリレーノード（Mobile Relay Node:ＭＲＮ）と、前記リレーノードに基地局を介して接続する移動管理装置（ＭＭＥ）と、を備えている。移動体に設置されたリレーノード（ＭＲＮ）は、前記リレーノードのセルに在圏する端末（ＵＥ１）に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する。 Embodiments of the present invention will be described below. According to one of several embodiments of the present invention, a relay node (Mobile Relay Node: MRN) installed in a moving body such as a train, and a mobility management device (MME) connected to the relay node via a base station. ) And. A relay node (MRN) installed in a mobile unit notifies at least information of a location registration area provided by the relay node to a terminal (UE1) located in the cell of the relay node.
　前記リレーノード（ＭＲＮ）の前記セル（ＴＡ２）へ入った端末（ＵＥ１）は、位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）を、前記リレーノード（ＭＲＮ）を介して、移動管理装置（ＭＭＥ：３０）に送信する。 The terminal (UE1) entering the cell (TA2) of the relay node (MRN) sends a location registration request: TAU (UE1, TA2) to the mobility management device (MME: 30) via the relay node (MRN). ).
　移動管理装置（ＭＭＥ）では、前記端末（ＵＥ１）の位置登録エリア情報として、前記端末（ＵＥ１）が在圏する前記リレーノード（ＭＲＮ）の前記セルのエリアが含まれる位置登録エリアの情報（ＴＡ２）を、移動位置登録エリアＭＴＡとして、前記リレーノード（ＭＲＮ）の現在の位置登録エリア（ＴＡ０）に関連させて、記憶部に記憶するようにしてもよい。ここで、ＭＲＮはＭＴＡに帰属する端末に対して、ＴＡ０およびＴＡ２の双方を含むＴＡリストを通知するようにしてもよい。 In the mobility management apparatus (MME), as the location registration area information of the terminal (UE1), location registration area information (TA2) including the area of the cell of the relay node (MRN) where the terminal (UE1) is located ) May be stored in the storage unit as the movement location registration area MTA in association with the current location registration area (TA0) of the relay node (MRN). Here, the MRN may notify the terminal belonging to the MTA of a TA list including both TA0 and TA2.
　前記リレーノード（ＭＲＮ）が新たな位置登録エリア（ＴＡ１）に入り、前記リレーノード（ＭＲＮ）からの位置登録要求：ＴＡＵ（ＭＲＮ，ＴＡ１）を受けると、前記移動管理装置（ＭＭＥ）は、前記端末（ＵＥ１）の位置登録エリアを、前記新たな位置登録エリア（ＴＡ１）に、前記リレーノードの前記セル情報（移動位置登録エリア情報：ＭＴＡ（ＴＡ２））を関連付けて記憶部に記憶するようにしてもよい。この際、移動管理装置（ＭＭＥ）は、記憶されている位置登録エリアの情報に前記移動位置登録エリアＭＴＡが含まれている前記端末（ＵＥ１）の位置登録エリアＴＡ０を、ＴＡ１に書き換えるようにしてもよい。 When the relay node (MRN) enters a new location registration area (TA1) and receives a location registration request: TAU (MRN, TA1) from the relay node (MRN), the mobility management device (MME) The location registration area of the terminal (UE1) is stored in the storage unit in association with the new location registration area (TA1) and the cell information of the relay node (movement location registration area information: MTA (TA2)). May be. At this time, the mobility management device (MME) rewrites the location registration area TA0 of the terminal (UE1) in which the location registration area MTA is included in the stored location registration area information to TA1. Also good.
　前記移動管理装置（ＭＭＥ）では、前記端末（ＵＥ１）への着信があると、前記記憶部を参照して、前記端末の位置登録エリアが、前記リレーノードの前記セルのエリアを含む移動位置登録エリア情報：ＭＴＡ（ＴＡ２）を含む場合、前記リレーノード（ＭＲＮ）の現在の位置登録エリア（ＴＡ１）にページング信号を報知し、前記リレーノード（ＭＲＮ）は、前記ページング信号を受けると、前記リレーノード（ＭＲＮ）は、前記リレーノード（ＭＲＮ）のセルにページング信号を送信し、前記端末を呼び出す構成としてもよい。 In the mobility management apparatus (MME), when there is an incoming call to the terminal (UE1), the location registration area of the terminal includes the area of the cell of the relay node with reference to the storage unit When the area information: MTA (TA2) is included, a paging signal is notified to the current location registration area (TA1) of the relay node (MRN), and when the relay node (MRN) receives the paging signal, the relay node (MRN) The node (MRN) may be configured to send a paging signal to the cell of the relay node (MRN) to call the terminal.
　あるいは、本発明のさらに別のいくつかの形態の一つによれば、前記リレーノード（ＭＲＮ）の前記セルのエリアが含まれる移動位置登録エリアＭＴＡ（ＴＡ２）へ入った端末（ＵＥ１）は、位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）を、前記リレーノード（ＭＲＮ）に送信し、前記リレーノード（ＭＲＮ）は、前記端末（ＵＥ１）からの前記位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）に含まれる現在の端末の位置登録エリア情報（ＴＡ２）を、前記リレーノード（ＭＲＮ）の現在の位置登録エリア情報（ＴＡ０）に書き換えて、前記移動管理装置（ＭＭＥ）に送信する。前記移動管理装置（ＭＭＥ）では、前記端末（ＵＥ１）の位置登録エリアとして、前記リレーノードの位置登録エリア（ＴＡ０）を記憶部に記憶するようにしてもよい。 Alternatively, according to one of some other aspects of the present invention, a terminal (UE1) entering the mobile location registration area MTA (TA2) including the area of the cell of the relay node (MRN) Location registration request: TAU (UE1, TA2) is transmitted to the relay node (MRN), and the relay node (MRN) is included in the location registration request: TAU (UE1, TA2) from the terminal (UE1). The current location registration area information (TA2) of the current terminal is rewritten to the current location registration area information (TA0) of the relay node (MRN) and transmitted to the mobility management device (MME). The mobility management device (MME) may store the location registration area (TA0) of the relay node in the storage unit as the location registration area of the terminal (UE1).
　本発明の別の形態の一つによれば、前記リレーノード（ＭＲＮ）が新たな位置登録エリア（ＴＡ１）に移動し、前記リレーノード（ＭＲＮ）の位置登録が必要な場合、前記リレーノード（ＭＲＮ）は、前記リレーノード（ＭＲＮ）のセルに在圏する１つ又は複数の端末の情報を含めた、位置登録要求：ＴＡＵ（ＭＲＮ、ＴＡ１，端末リスト）を、前記移動管理装置（ＭＭＥ）に送信するようにしてもよい。該位置登録要求を受け取った前記移動管理装置（ＭＭＥ）では、前記１つ又は複数の端末の位置登録エリアとして、前記新たな位置登録エリア（ＴＡ１）を前記記憶部に記憶するようにしてもよい。 According to another aspect of the present invention, when the relay node (MRN) moves to a new location registration area (TA1) and location registration of the relay node (MRN) is required, the relay node (MRN) MRN) sends a location registration request: TAU (MRN, TA1, terminal list) including information on one or more terminals located in the cell of the relay node (MRN) to the mobility management device (MME). You may make it transmit to. The mobility management device (MME) that has received the location registration request may store the new location registration area (TA1) in the storage unit as the location registration area of the one or more terminals. .
　また、前記移動管理装置（ＭＭＥ）では、前記端末（ＵＥ１）への着信があると、前記記憶部を参照して、前記端末の位置登録エリアとして記憶されている前記リレーノード（ＭＲＮ）の位置登録エリア（ＴＡ１）にページング信号を報知し、前記リレーノード（ＭＲＮ）は、前記ページング信号を受けると、前記リレーノードのセルにページング信号を送信し、前記端末を呼び出す構成としてもよい。 In addition, when there is an incoming call to the terminal (UE1) in the mobility management device (MME), the location of the relay node (MRN) stored as the location registration area of the terminal is referred to the storage unit When the paging signal is notified to the registration area (TA1) and the relay node (MRN) receives the paging signal, the paging signal may be transmitted to the cell of the relay node to call the terminal.
　本発明の別の形態の一つによれば、前記リレーノード（ＭＲＮ）は、前記ページング信号に対する前記端末からの応答がないと、前記移動管理装置（ＭＭＥ）と通信し、前記端末を、前記リレーノード（ＭＲＮ）のセルに在圏する端末を記憶する記憶部から、削除するようにしてもよい。 According to another aspect of the present invention, if there is no response from the terminal to the paging signal, the relay node (MRN) communicates with the mobility management device (MME), and You may make it delete from the memory | storage part which memorize | stores the terminal located in the cell of a relay node (MRN).
　本発明のさらに別の形態の一つによれば、前記移動体に含まれる複数の前記リレーノードに接続されるセンターユニット（７０）を備え、複数の前記リレーノードのセルには同一の位置登録エリア情報が割り当てられ、前記センターユニット（７０）は、複数の前記リレーノードのセルにそれぞれ在圏する複数の端末の各々を、前記端末が在圏する前記リレーノードに対応付けて記憶部（７０１）で記憶管理し、前記移動管理装置からのページング信号を受けると、前記記憶部を参照して、着信先の端末が在圏する前記リレーノードに、前記ページング信号を振り分ける構成としてもよい。本発明の各形態によれば、移動体上での端末の位置登録要求を抑制可能としている。以下、例示的な実施形態について説明する。 According to another aspect of the present invention, the mobile device includes a center unit (70) connected to the plurality of relay nodes included in the mobile body, and the same location registration is performed in the cells of the plurality of relay nodes. Area information is allocated, and the center unit (70) associates each of the plurality of terminals located in the cells of the plurality of relay nodes with the relay node in which the terminal is located, in accordance with the storage unit (701). ), And when the paging signal is received from the mobility management device, the paging signal may be distributed to the relay node where the destination terminal is located with reference to the storage unit. According to each aspect of the present invention, it is possible to suppress terminal location registration requests on a moving object. Hereinafter, exemplary embodiments will be described.
＜実施形態１＞
　本発明の第１の例示的な実施形態について説明する。図１は、第１の例示的な実施形態を説明する図である。図２は、第１の実施形態の位置登録における代表的な動作シーケンスを例示した図である。図１において、矢線等に付した括弧内の番号は、シーケンスの順番を表しており、図２のシーケンス番号に対応している。以下では説明のために、位置登録エリアとしてＬＴＥのＴＡ（Tracking Area)、位置登録要求として、ＴＡＵ(Tracking Area Update)、位置登録エリアの識別子としてＴＡＩ（Tracking Area Identity）を用いるが、ＬＴＥに制限されるものではないことは勿論である。例えばＵＴＲＡＮ（UMTS（Universal Mobile Telecommunication System）Terrestrial Radio Access Network）のＲＡ（Routing Area）、ＲＡＵ（Routing Area Update）を用いて、ＵＴＲＡＮに適用することも可能である。 <Embodiment 1>
A first exemplary embodiment of the present invention will be described. FIG. 1 is a diagram illustrating a first exemplary embodiment. FIG. 2 is a diagram illustrating a typical operation sequence in the location registration according to the first embodiment. In FIG. 1, numbers in parentheses attached to arrows and the like represent the sequence order and correspond to the sequence numbers in FIG. 2. In the following, for the purpose of explanation, LTE TA (Tracking Area) is used as the location registration area, TAU (Tracking Area Update) is used as the location registration request, and TAI (Tracking Area Identity) is used as the location registration area identifier. Of course, it is not done. For example, it is also possible to apply to UTRAN using RA (Routing Area) or RAU (Routing Area Update) of UTRAN (UMTS (Universal Mobile Telecommunication System) Terrestrial Radio Access Network).
＜端末の位置登録＞
　図１及び図２において、ＭＲＮ２０は、現在、位置登録エリアＴＡ０に在圏しており、位置登録済みであるものとする。ＴＡ２はＭＲＮ２０が提供するセルのトラッキングエリア（ＴＡ）であり、ＭＲＮ２０と共に移動する。基地局（ｅＮＢ）が提供するＴＡとモバイルリレーノードが提供するＴＡ２が違うことを端末が認識できるようにしても良いが、認識できるようにしなくてもよい。認識できるようにするやり方としては、例えば、ＴＡとＭＴＡの識別番号の領域を分ける、などが考えられる。 <Terminal location registration>
1 and 2, it is assumed that the MRN 20 is currently in the location registration area TA0 and has already been registered. TA2 is a cell tracking area (TA) provided by the MRN 20 and moves together with the MRN 20. Although the terminal may be able to recognize that the TA provided by the base station (eNB) and the TA2 provided by the mobile relay node are different, the terminal may not be able to recognize. As a method for enabling recognition, for example, the areas of the identification numbers of TA and MTA are divided.
　アイドルモードの端末１０（端末識別情報＝ＵＥ１）が列車等の移動体に乗車する（１）。アイドルモードの端末１０は、ＭＲＮ２０のセルに入り、ＭＲＮ２０から報知されるトラッキングエリア識別情報ＴＡＩ（ＴＡ２）を受信する。 The terminal 10 in the idle mode (terminal identification information = UE1) gets on a moving body such as a train (1). The terminal 10 in the idle mode enters the cell of the MRN 20 and receives the tracking area identification information TAI (TA2) broadcast from the MRN 20.
　端末１０は、ＴＡＵ手順に従い、位置登録要求を行う。すなわち、端末１０は、ＴＡ２が、端末１０で現在保持しているＴＡリストに含まれていないことを検出すると、位置登録要求：ＴＡＵ（ＵＥ１、ＴＡ２）をＭＲＮ２０に送信する（２）。 The terminal 10 makes a location registration request according to the TAU procedure. That is, when the terminal 10 detects that TA2 is not included in the TA list currently held by the terminal 10, the terminal 10 transmits a location registration request: TAU (UE1, TA2) to the MRN 20 (2).
　ＭＲＮ２０は、端末１０からの位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）を中継しドナー基地局（不図示）を介してＭＭＥ３０へ送信する（３）。その際、ＭＲＮ２０は、ＴＡＵメッセージに設定されるＴＡ情報として、ＭＲＮ２０の位置登録エリア情報であるＴＡ２が移動位置登録エリア（Moving Tracking Area：ＭＴＡ）であることを示す情報（ＭＴＡ）を付加したＭＴＡ（ＴＡ２）を設定（又は変換）し、ＴＡＵ（ＵＥ１，ＭＴＡ（ＴＡ２））をＭＭＥ３０に送信してもよい。 The MRN 20 relays the location registration request: TAU (UE1, TA2) from the terminal 10 and transmits it to the MME 30 via the donor base station (not shown) (3). At that time, the MRN 20 adds, as TA information set in the TAU message, MTA to which information (MTA) indicating that TA2 which is the location registration area information of the MRN 20 is a moving location registration area (Moving Tracking Area: MTA) is added. (TA2) may be set (or converted), and TAU (UE1, MTA (TA2)) may be transmitted to the MME 30.
　ＭＲＮ２０は、ＴＡＵ（ＵＥ１，ＴＡ２）を送信した端末１０の識別情報（ＵＥ１）を、ＭＲＮ２０内の記憶部（図９の端末情報記憶部２０１）に記憶するようにしてもよい。 The MRN 20 may store the identification information (UE1) of the terminal 10 that has transmitted the TAU (UE1, TA2) in the storage unit (terminal information storage unit 201 in FIG. 9) in the MRN 20.
　ＭＭＥ３０は、ＭＲＮ２０から、ＴＡＵ（ＵＥ１，ＭＴＡ（ＴＡ２））を受信すると、端末１０がどの位置登録エリアにいるかを管理するための情報として、端末１０（ＵＥ１）がＭＲＮ２０の移動トラッキングエリア（ＴＡ２）に在圏することを表すＭＴＡ（ＴＡ２）を、ＭＲＮ２０の現在のＴＡ０と関連付けて記憶部３０１に記憶する（４）。ここで、ＵＥ１は端末１０の識別情報、ＴＡ０はトラッキングエリアＴＡ０の識別情報ＴＡＩである。図１では、ＭＲＮ２０の現在の位置登録エリア：ＴＡ０にＭＲＮ２０のセル情報を関連付けることを、便宜上、
ＴＡ０＋ＭＴＡ（ＴＡ２）
と表している。これは、移動位置登録エリア：ＭＴＡ（ＴＡ２）（ＭＲＮ２０のセルＴＡ２）が、ＭＲＮ２０が在圏するＴＡ０に従属する関係にあること、すなわち１つ下の階層に含まれることも表している。 When the MME 30 receives the TAU (UE1, MTA (TA2)) from the MRN 20, the terminal 10 (UE1) uses the mobile tracking area (TA2) of the MRN 20 as information for managing which location registration area the terminal 10 is in. MTA (TA2) indicating presence in the area is stored in the storage unit 301 in association with the current TA0 of the MRN 20 (4). Here, UE1 is identification information of the terminal 10, and TA0 is identification information TAI of the tracking area TA0. In FIG. 1, associating cell information of the MRN 20 with the current location registration area: TA0 of the MRN 20,
TA0 + MTA (TA2)
It expresses. This also indicates that the movement location registration area: MTA (TA2) (the cell TA2 of the MRN 20) is subordinate to the TA 0 in which the MRN 20 is located, that is, included in the next lower layer.
　なお、図１では、説明の容易化のため、ＭＲＮ２０は、トラッキングエリアＴＡ０、ＴＡ１に入ったときに、位置登録要求ＴＡＵを送信する例が示されているが、ＴＡ０、ＴＡ１を、同じＴＡリスト（１つ又は複数のＴＡを含む）に属する位置登録エリアとしてもよいことは勿論である。この場合、ＭＲＮ２０は、一つのＴＡから他のＴＡに移動した場合でも、他のＴＡがＭＲＮ２０で保持するＴＡリストに含まれるならば、位置登録要求：ＴＡＵは行わない。 1 shows an example in which the MRN 20 transmits a location registration request TAU when entering the tracking areas TA0 and TA1 for ease of explanation. However, TA0 and TA1 are stored in the same TA list. Of course, the location registration area may belong to (including one or more TAs). In this case, even when the MRN 20 moves from one TA to another TA, the location registration request: TAU is not performed if the other TA is included in the TA list held by the MRN 20.
　ＭＭＥ３０は、ＭＴＡ（ＴＡ２）を含むＴＡリスト（Tracking Area List）を選択し、選択したＴＡリストを含む応答信号：ＴＡＵ　ＡＣＣＥＰＴを、端末ＵＥ１に送信する。その際、ＭＭＥ３０は、ＴＡ０をを加えたＴＡリスト（例えば、ＴＡ０＋ＭＴＡ（ＴＡ２））を、ＴＡＵ　ＡＣＣＥＰＴに含めてＭＲＮ２０に送信するとしても良い（５）。 The MME 30 selects a TA list (Tracking Area List) including the MTA (TA2), and transmits a response signal including the selected TA list: TAU ACCEPT to the terminal UE1. At that time, the MME 30 may include the TA list (for example, TA0 + MTA (TA2)) to which TA0 is added and transmit it to the MRN 20 in the TAU ACCEPT (5).
　端末１０は、ＭＭＥ３０からのＴＡＵ　ＡＣＣＥＰＴ（ＵＥ１、ＴＡリスト）を受信し、端末１０内部の記憶部（不図示）に記憶する。以降、端末１０は、ＭＲＮ２０から報知されるＴＡＩ（ＴＡ２）を受信することになり、ＭＲＮ２０が移動しても、端末１０がＭＲＮ２０のセル（移動位置登録エリア：ＭＴＡ）から外れるまで（例えば列車を下車するか、ＴＡリストに含まれない移動位置登録エリアの別車両が存在すれば、その車両へ移動するまで）、端末１０が自らＭＭＥ３０に対して位置登録要求：ＴＡＵを送信することはない。 The terminal 10 receives the TAU ACCEPT (UE1, TA list) from the MME 30, and stores it in a storage unit (not shown) inside the terminal 10. Thereafter, the terminal 10 receives the TAI (TA2) broadcast from the MRN 20, and even if the MRN 20 moves, until the terminal 10 moves out of the cell (movement location registration area: MTA) of the MRN 20 (for example, a train) The terminal 10 does not transmit a location registration request: TAU to the MME 30 by itself until it gets off or there is another vehicle in the movement location registration area that is not included in the TA list (until it moves to that vehicle).
＜ＭＲＮの位置登録＞
　ＭＲＮ２０が別の位置登録エリアＴＡ１に移動する（６）。ＭＲＮ２０は、移動先のセルから報知されている位置登録エリア情報（ＴＡＩ）：ＴＡ１を受信し、報知されている位置登録エリア情報：ＴＡ１が、ＭＲＮ２０で現在保持しているＴＡリストに含まれていないことを検出すると、ＭＲＮ２０は位置登録要求：ＴＡＵ（ＭＲＮ，ＴＡ１）を不図示のドナー基地局を介してＭＭＥ３０に送信する（７）。ＭＲＮ２０は、ＭＲＮ２０のセルにおいて、位置登録エリア情報ＴＡ２を報知する。位置登録エリアＴＡ１に移動したＭＲＮ２０のセルの在圏する端末１０は、ＭＲＮ２０から報知された位置登録エリア情報ＴＡ２を受信するが、ＴＡ２は、ＭＲＮ２０で現在保持しているＴＡリストに含まれているため、端末１０がＴＡ２の受信に伴い、位置登録要求：ＴＡＵを送信することはない。 <Location registration of MRN>
The MRN 20 moves to another location registration area TA1 (6). The MRN 20 receives the location registration area information (TAI): TA1 broadcast from the destination cell, and the broadcast location registration area information: TA1 is included in the TA list currently held by the MRN 20. When it is detected that there is not, the MRN 20 transmits a location registration request: TAU (MRN, TA1) to the MME 30 via a donor base station (not shown) (7). The MRN 20 broadcasts the location registration area information TA2 in the cell of the MRN 20. The terminal 10 in which the cell of the MRN 20 moved to the location registration area TA1 receives the location registration area information TA2 broadcast from the MRN 20, but TA2 is included in the TA list currently held by the MRN 20 Therefore, the terminal 10 does not transmit the location registration request: TAU with the reception of TA2.
　ＭＭＥ３０は、記憶部３０１内のＭＲＮ２０の位置情報を更新し、（ＭＲＮ、ＴＡ１）を記憶する。また、ＭＭＥ３０は、ＭＲＮ２０の位置登録エリアの更新に伴い、ＭＲＮ２０のセルに帰属している端末１０（ＵＥ１）の位置登録エリア情報を、ＴＡ０＋ＭＴＡ（ＴＡ２）からＴＡ１＋ＭＴＡ（ＴＡ２）に更新する（８）。 The MME 30 updates the position information of the MRN 20 in the storage unit 301 and stores (MRN, TA1). Further, the MME 30 updates the location registration area information of the terminal 10 (UE1) belonging to the cell of the MRN 20 from TA0 + MTA (TA2) to TA1 + MTA (TA2) with the update of the location registration area of the MRN 20 (8). .
　ＭＭＥ３０は、ＴＡ１を含むＴＡリストを選択し、該ＴＡリストを含む応答信号：ＴＡＵ　ＡＣＣＥＰＴをＭＲＮ２０に送信する（９）。本実施形態においては、ＭＲＮ２０が位置登録エリアＴＡ１に移動しても、ＭＲＮ２０のセルに在圏する端末１０は、ＴＡＵを送信することはない。 The MME 30 selects a TA list including TA1, and transmits a response signal TAU ACCEPT including the TA list to the MRN 20 (9). In the present embodiment, even if the MRN 20 moves to the location registration area TA1, the terminal 10 located in the cell of the MRN 20 does not transmit a TAU.
　なお、上記では、端末１０から位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）を受けたＭＲＮ２０が、ＭＲＮ２０の位置登録エリアであるＴＡ２が移動位置登録エリア：ＭＴＡであることを示す情報も付加して、位置登録要求：ＴＡＵ（ＵＥ１，ＭＴＡ（ＴＡ２））をドナー基地局を介してＭＭＥ３０に送信する構成を例について説明したが、ＭＲＮ２０が報知するＭＲＮ２０のセルのＴＡＩ情報として、ＭＴＡ（ＴＡ２）を報知し、アイドルモードでＭＲＮ２０の該セルに入り該ＴＡＩ情報を受信した端末１０が、位置登録要求：ＴＡＵ（ＵＥ１，ＭＴＡ（ＴＡ２））をＭＲＮ２０に送信し、ＭＲＮ２０は、ＴＡＵ（ＵＥ１，ＭＴＡ（ＴＡ２））をそのままＭＭＥ３０に中継するようにしてもよい。この場合、ＭＭＥ３０からの応答信号：ＴＡＵ　ＡＣＣＥＰＴ（ＵＥ１、ＴＡリスト＋ＭＴＡ（ＴＡ２））をＭＲＮ２０は、そのまま中継して端末１０に送信するようにしてもよい。
　また、ＴＡＩの番号を、通常のＴＡを示す番号体系と移動位置登録エリアを示す番号体系に分け、ＭＴＡ（ＴＡ２）の識別子には、移動位置登録エリアを示す番号体系を用いるということも可能である。これは、全実施形態において共通である。 In the above, the MRN 20 that has received the location registration request: TAU (UE1, TA2) from the terminal 10 also adds information indicating that TA2, which is the location registration area of the MRN 20, is the movement location registration area: MTA, Location registration request: An example of a configuration in which TAU (UE1, MTA (TA2)) is transmitted to the MME 30 via a donor base station has been described. However, MTA (TA2) is reported as TAI information of the cell of the MRN 20 that the MRN 20 broadcasts. The terminal 10 that enters the cell of the MRN 20 in the idle mode and receives the TAI information transmits a location registration request: TAU (UE1, MTA (TA2)) to the MRN 20, and the MRN 20 transmits the TAU (UE1, MTA (TA2) )) May be relayed to the MME 30 as it is. In this case, the MRN 20 may relay the response signal from the MME 30: TAU ACCEPT (UE1, TA list + MTA (TA2)) and transmit it to the terminal 10 as it is.
It is also possible to divide the TAI number into a number system indicating a normal TA and a number system indicating a movement location registration area, and to use a number system indicating a movement location registration area as an identifier of the MTA (TA2). is there. This is common in all embodiments.
＜着信処理＞
　図３は、図１及び図２を参照して説明した第１の例示的な実施形態において、端末１０宛てに着信があった場合の処理を説明する図である。ＭＭＥ３０は、記憶部３０１を参照して、端末１０（ＵＥ１）の位置登録エリアが、リレーノード（ＭＲＮ）のセル（移動位置登録エリアＭＴＡ（ＴＡ２））に在圏し、リレーノード（ＭＲＮ）２０の位置登録エリアがＴＡ１であることを認識する。このため、ＭＭＥ３０は、ページング信号を位置登録エリア：ＴＡ１（又はＴＡ１を含むＴＡリストの全ＴＡ）に報知する（１）。位置登録エリア：ＴＡ１に在圏するリレーノードＭＲＮ２０は、ページング信号を受けると、ＭＲＮ２０のセルにページング信号を送信し端末１０の呼び出しを行う（２）。 <Incoming call processing>
FIG. 3 is a diagram for explaining processing when there is an incoming call addressed to the terminal 10 in the first exemplary embodiment described with reference to FIGS. 1 and 2. The MME 30 refers to the storage unit 301, and the location registration area of the terminal 10 (UE1) is located in the cell of the relay node (MRN) (the movement location registration area MTA (TA2)), and the relay node (MRN) 20 It is recognized that the location registration area is TA1. Therefore, the MME 30 notifies the paging signal to the location registration area: TA1 (or all TAs in the TA list including TA1) (1). When the relay node MRN20 located in the location registration area: TA1 receives the paging signal, the relay node MRN20 transmits the paging signal to the cell of the MRN 20 and calls the terminal 10 (2).
＜ＭＲＮの構成例＞
　図９を参照して、第１の実施形態のＭＲＮ２０の構成の一例を説明する。ＭＲＮ２０は、ドナー基地局と無線通信するアンテナ２０７と、列車等移動体内の端末と無線通信するアンテナ２０８と、不図示の無線部、ベースバンド部、コントローラ等を備えた通信部２０２と、端末１０からの移動登録要求ＴＡＵを受信し、ドナー基地局を介してＭＭＥ３０へ送信するＴＡＵ処理部２０３と、ＭＲＮ２０のセル情報を、移動位置登録エリア情報ＴＡＩとして報知するＴＡＩ報知部２０４と、ＭＭＥ３０からドナー基地局を介して受信したページング信号を受け、ＭＲＮ２０のセルにページング信号を報知するページング処理部２０５を備えている。なお、端末情報管理部２０６は、端末に対して基地局として機能するＭＲＮ２０が、当該ＭＲＮ２０のセルに在圏する端末を管理するため、該端末の識別情報（IMSI（International Mobile Subscriber Identity）等）を記憶部（端末情報記憶部）２０１に記憶する。なお、ＴＡＵ処理部２０３、ＴＡＩ報知部２０４、ページング処理部２０５、端末情報管理部２０６の処理は、ＭＲＮ２０を構成する不図示のコンピュータ（プロセッサ）で動作するプログラムで実現するようにしてもよい。この場合、ＭＲＮ２０のコンピュータに不図示のメモリ（HDD(Hard Disk Drive)あるいは半導体メモリ等）からプログラムをロードし、コンピュータでプログラムが実行される。なお、プログラムを記憶するメモリは記憶部２０１であってもよい。 <Configuration example of MRN>
An example of the configuration of the MRN 20 of the first embodiment will be described with reference to FIG. The MRN 20 includes an antenna 207 that wirelessly communicates with a donor base station, an antenna 208 that wirelessly communicates with a terminal in a moving body such as a train, a communication unit 202 that includes a wireless unit (not shown), a baseband unit, a controller, and the like, and a terminal 10 The TAU processing unit 203 that receives the mobile registration request TAU from the mobile station and transmits it to the MME 30 via the donor base station, the TAI notification unit 204 that reports the cell information of the MRN 20 as the mobile location registration area information TAI, and the donor from the MME 30 A paging processing unit 205 that receives the paging signal received via the base station and broadcasts the paging signal to the cell of the MRN 20 is provided. The terminal information management unit 206 manages the terminal located in the cell of the MRN 20 by the MRN 20 that functions as a base station for the terminal, so that terminal identification information (such as IMSI (International Mobile Subscriber Identity)) Is stored in the storage unit (terminal information storage unit) 201. Note that the processing of the TAU processing unit 203, the TAI notification unit 204, the paging processing unit 205, and the terminal information management unit 206 may be realized by a program that runs on a computer (processor) (not shown) that constitutes the MRN 20. In this case, a program is loaded from a memory (HDD (Hard Disk Drive) or semiconductor memory) (not shown) into the computer of the MRN 20, and the program is executed by the computer. The memory that stores the program may be the storage unit 201.
＜ＭＭＥの構成例＞
　図１０を参照して、第１の実施形態のＭＭＥ３０の構成の一例を説明する。ＭＭＥ３０は、ドナー基地局に接続する通信部３０５と、端末１０、ＭＲＮ２０からドナー基地局を介して送信された位置登録要求ＴＡＵを受信するＴＡＵ処理部３０２と、端末１０及びＭＲＮ２０のそれぞれの位置登録エリア（ＴＡ）情報を管理するＴＡ情報管理部３０３と、端末１０及びＭＲＮ２０のそれぞれの位置登録エリア（ＴＡ）情報を記憶する記憶部３０１と、端末１０及びＭＲＮ２０に対してそれぞれドナー基地局を介して位置登録要求ＴＡＵの応答（ＴＡＵ　ＡＣＣＥＰＴ）を送信するＴＡＵ　ＡＣＣＥＰＴ送信部３０４と、端末１０の位置登録エリア（ＴＡ）情報をＨＳＳへ送信する通信部３０６を備えている。 <Configuration example of MME>
An example of the configuration of the MME 30 according to the first embodiment will be described with reference to FIG. The MME 30 includes a communication unit 305 connected to the donor base station, a TAU processing unit 302 that receives a location registration request TAU transmitted from the terminal 10 and the MRN 20 via the donor base station, and a location registration of each of the terminal 10 and the MRN 20. The TA information management unit 303 that manages area (TA) information, the storage unit 301 that stores the location registration area (TA) information of each of the terminal 10 and the MRN 20, and the terminal 10 and the MRN 20 via the donor base station, respectively. A TAU ACCEPT transmission unit 304 that transmits a response (TAU ACCEPT) to the location registration request TAU, and a communication unit 306 that transmits location registration area (TA) information of the terminal 10 to the HSS.
　第１の実施形態では、ＴＡ情報管理部３０３は、端末１０の位置登録エリアＴＡを、ＭＲＮ２０のセル（移動位置登録エリアＭＴＡ）として、１つ上の階層のＭＲＮ２０の位置登録エリア（ＭＴＡが従属する位置登録エリア）に関連付けて記憶部３０１に記憶する。制御部３０７は、各部の制御、通信制御等を行う。なお、ＴＡＵ処理部３０２、ＴＡ情報管理部３０３、ＴＡＵ　ＡＣＣＥＰＴ送信部３０４等の処理は、ＭＭＥ３０を構成する不図示のコンピュータ（プロセッサ）で動作するプログラムで実現するようにしてもよい。この場合、ＭＭＥ３０のコンピュータ（プロセッサ）に、メモリ（HDD(Hard Disk Drive)、あるいは半導体メモリ等）からプログラムをロードし、コンピュータでプログラムが実行される。なお、プログラムを記憶するメモリは記憶部３０１であってもよい。 In the first embodiment, the TA information management unit 303 uses the location registration area TA of the terminal 10 as the cell of the MRN 20 (movement location registration area MTA), and the location registration area (MTA) of the MRN 20 in the next higher layer is subordinate. In the storage unit 301 in association with the location registration area). The control unit 307 performs control of each unit, communication control, and the like. The processing of the TAU processing unit 302, the TA information management unit 303, the TAU ACCEPT transmission unit 304, and the like may be realized by a program that operates on a computer (processor) (not shown) that configures the MME 30. In this case, a program is loaded into a computer (processor) of the MME 30 from a memory (HDD (Hard Disk Drive) or semiconductor memory), and the program is executed by the computer. The memory for storing the program may be the storage unit 301.
＜実施形態２＞
　次に、本発明の第２の実施形態を説明する。ＭＲＮ２０がプロキシ／ＮＡＴ（Network Address Translation）として機能する。すなわち、ＭＲＮ２０が提供するセルで端末１０から送信された位置登録要求：ＴＡＵを受信すると、ＭＲＮ２０が、当該位置登録要求：ＴＡＵに含まれるＴＡＩを書き換えてＭＭＥへ中継する。 <Embodiment 2>
Next, a second embodiment of the present invention will be described. The MRN 20 functions as a proxy / NAT (Network Address Translation). That is, when the location registration request: TAU transmitted from the terminal 10 is received in the cell provided by the MRN 20, the MRN 20 rewrites the TAI included in the location registration request: TAU and relays it to the MME.
　図４は、第２の例示的な実施形態を説明する図である。図５は、第２の実施形態の代表的な動作シーケンスを例示した図である。図４において、矢線等に付した括弧内の番号はシーケンスの順番を表しており、図２のシーケンス番号に対応している。以下では説明のためにＬＴＥのエリアコンセプトであるＴＡ(Tracking Area)、位置登録手順であるＴＡＵ（Tracking Area Update)を用いるが、本実施形態は、ＬＴＥに制限されるものでないことは勿論である。 FIG. 4 is a diagram illustrating a second exemplary embodiment. FIG. 5 is a diagram illustrating a typical operation sequence of the second embodiment. In FIG. 4, numbers in parentheses attached to arrows and the like represent the sequence order, and correspond to the sequence numbers in FIG. In the following, for the sake of explanation, TA (Tracking エ リ ア Area) which is an LTE area concept and TAU (Tracking Area Update) which is a location registration procedure are used, but it is needless to say that this embodiment is not limited to LTE. .
　図４及び図５を参照して、端末１０の位置登録手順を説明する。なお、図４及び図５において、ＭＲＮ２０は、現在、位置登録エリアＴＡ０に在圏しており、位置登録済みであるものとする。 The location registration procedure of the terminal 10 will be described with reference to FIGS. 4 and 5, it is assumed that the MRN 20 is currently in the location registration area TA0 and has already been registered.
＜端末の位置登録＞
　ＭＲＮ２０は、端末としてネットワークに接続・通信する機能を持つとともに、基地局（ｅＮＢ）としてセルを提供し端末１と接続・通信する機能も併せ持つ。ＴＡ２はＭＲＮ２０が提供するセルのトラッキングエリアであり、ＭＲＮ２０と共に移動する。通常の基地局（ｅＮＢ）が提供するＴＡと移動位置登録エリアＭＴＡとを端末が区別できるようにはしなくてもよい　（既存の端末がそのまま使えるメリットがある) 。 <Terminal location registration>
The MRN 20 has a function of connecting and communicating with a network as a terminal, and also has a function of providing a cell as a base station (eNB) and connecting and communicating with the terminal 1. TA2 is a cell tracking area provided by the MRN 20 and moves together with the MRN 20. The terminal may not be able to distinguish between the TA provided by the normal base station (eNB) and the movement location registration area MTA (the advantage is that the existing terminal can be used as it is).
　端末１０はＭＲＮ２０の提供するセル（ＴＡ２）に入る（１）。アイドルモードの端末１０は、ＭＲＮ２０から報知されるトラッキングエリア識別情報ＴＡＩ（ＴＡ２）を受信する。端末１０は、ＴＡ２が、端末１０で現在保持しているＴＡリストに含まれていないことを検出すると、端末１０は、ＭＭＥ宛てに位置登録要求：ＴＡＵ（ＵＥ１、ＴＡ２）を送信する（２）。ＵＥ１は端末１０の識別情報、ＴＡ２はＭＲＮ２０のセル（ＴＡ２）の識別情報ＴＡＩである。 The terminal 10 enters the cell (TA2) provided by the MRN 20 (1). The terminal 10 in the idle mode receives the tracking area identification information TAI (TA2) notified from the MRN 20. When the terminal 10 detects that TA2 is not included in the TA list currently held by the terminal 10, the terminal 10 transmits a location registration request: TAU (UE1, TA2) to the MME (2) . UE1 is identification information of the terminal 10, and TA2 is identification information TAI of the cell (TA2) of the MRN 20.
　ＭＲＮ２０は、端末１０からＴＡＵ（ＵＥ１，ＴＡ２）を受信すると、位置登録エリア情報ＴＡ２をＭＲＮ２０の在圏するＴＡ０に変換し、ドナー基地局（不図示）を介してＭＭＥ３０へ送信する（３）。なお、端末１０のセルサーチ、セルの選択等において、例えばＭＲＮ２０であることを特に意識せず、単に無線品質が良いなどの理由でＭＲＮ２０のセルに入る。この際、本実施形態では、ＭＲＮ２０がプロキシとして介入し、端末２０からの位置登録要求：ＴＡＵ（ＵＥ１，ＴＡ２）を、ＴＡＵ（ＵＥ１，ＴＡ１）に書き換えた後、ＭＭＥ３０へ送信する。ＭＲＮ２０は、端末１０とＭＭＥ３０とのシグナリングを代行する。 Upon receiving the TAU (UE1, TA2) from the terminal 10, the MRN 20 converts the location registration area information TA2 into TA0 where the MRN 20 is located, and transmits it to the MME 30 via a donor base station (not shown) (3). In the cell search and cell selection of the terminal 10, for example, the MRN 20 enters the cell of the MRN 20 simply because, for example, the radio quality is good without being conscious of being the MRN 20. At this time, in this embodiment, the MRN 20 intervenes as a proxy, rewrites the location registration request: TAU (UE1, TA2) from the terminal 20 to the TAU (UE1, TA1), and then transmits it to the MME 30. The MRN 20 performs signaling between the terminal 10 and the MME 30.
　この結果、ＭＭＥ３０は、端末（ＵＥ１）をＴＡ０と関連付けて記憶部３０１に記憶する（４）。なお、図４では、説明の容易化のため、ＭＲＮ２０は、トラッキングエリアＴＡ０、ＴＡ１に入ったときに、位置登録要求ＴＡＵを送信する例が示されているが、ＴＡ０、ＴＡ１を、それぞれ異なるＴＡリスト（１つ又は複数のＴＡを含む）に属する位置登録エリアとしてもよいことは勿論である。この場合、ＭＲＮ２０は、一つのＴＡから他のＴＡに移動した場合、他のＴＡがＭＲＮ２０で保持するＴＡリストに含まれる場合、位置登録要求は行わない。なお、ＭＲＮ２０がトラッキングエリアＴＡ０内に入ったときに、ＴＡＵ（ＭＲＮ、ＴＡ０）をＭＭＥ３０に送信し、記憶装置３０１内には（ＭＲＮ、ＴＡ０）がすでに記憶されている。 As a result, the MME 30 stores the terminal (UE1) in association with TA0 in the storage unit 301 (4). 4 shows an example in which the MRN 20 transmits a location registration request TAU when entering the tracking areas TA0 and TA1, for ease of explanation. However, TA0 and TA1 are assigned to different TAs. It goes without saying that the location registration area may belong to a list (including one or more TAs). In this case, when the MRN 20 moves from one TA to another TA, the location registration request is not performed when the other TA is included in the TA list held by the MRN 20. When MRN 20 enters tracking area TA0, TAU (MRN, TA0) is transmitted to MME 30, and (MRN, TA0) is already stored in storage device 301.
　ＭＭＥ３０は、ＴＡ０を含むＴＡリストを選択し、ＴＡリストを含む応答信号：ＴＡＵ　ＡＣＣＥＰＴを、ＭＲＮ２０に送信する（５）。ＭＲＮ２０は、ＭＲＮ２０のセル情報であるＴＡ２をＴＡＵ　ＡＣＣＥＰＴに含めて端末１０に送信する（５’）。なお、ＭＲＮ２０はＭＭＥ２０からのＴＡＵ　ＡＣＣＥＰＴに含まれるＴＡ０を含むＴＡリストに、ＭＲＮ２０のセル情報であるＴＡ２を加えた位置登録エリア情報を、ＴＡＵ　ＡＣＣＥＰＴで端末１０に送信するようにしてもよい。 The MME 30 selects a TA list including TA0, and transmits a response signal including the TA list: TAU ACCEPT to the MRN 20 (5). The MRN 20 includes TA2 which is cell information of the MRN 20 in the TAU ACCEPT and transmits it to the terminal 10 (5 '). The MRN 20 may transmit location registration area information obtained by adding TA2 that is the cell information of the MRN 20 to the TA list including TA0 included in the TAU ACCEPT from the MME 20 to the terminal 10 using the TAU ACCEPT.
　端末１０は、ＭＭＥ３０からのＴＡＵ　ＡＣＣＥＰＴを受信し、端末１０内部の記憶部（不図示）に記憶する。以降、端末１０は、ＭＲＮ２０から報知されるＴＡＩ（ＴＡ２）を受信することになり、例えばＭＲＮ２０のセルから外れるまで、端末１０自ら位置登録要求：ＴＡＵを送信しなくてもよい。 The terminal 10 receives the TAU ACCEPT from the MME 30 and stores it in a storage unit (not shown) inside the terminal 10. Thereafter, the terminal 10 receives the TAI (TA2) broadcast from the MRN 20, and does not need to transmit the location registration request: TAU by itself until the terminal 10 is removed from the cell of the MRN 20, for example.
＜ＭＲＮの位置登録：一括ＴＡＵ＞
　列車等移動体の移動に伴い、ＭＲＮ２０が位置登録エリアＴＡ０からＴＡ１に移動する（６）。ＭＲＮ２０は、ＴＡＵ手順に従い（移動先のＴＡ１がＭＲＮ２０で保持するＴＡリストに含まれていない場合）、位置登録要求：ＴＡＵ（ＭＲＮ，ＴＡ１）をＭＭＥ３０に送信する。本実施形態では、ＭＲＮ２０は、移動先のセルから報知される位置登録エリア情報（ＴＡＩ）をＭＲＮ２０内で終端し、ＭＲＮ２０のセルに在圏する端末１０への中継（報知）は行わないようにしてもよい。ＭＲＮ２０の配下の端末１０（列車内の端末）は、ＭＲＮ２０が位置登録エリアＴＡ１からＴＡ２に移動しても、端末１０から位置登録要求：ＴＡＵを行うことはない。 <Location registration of MRN: Batch TAU>
As the moving body such as a train moves, the MRN 20 moves from the position registration area TA0 to TA1 (6). The MRN 20 transmits a location registration request: TAU (MRN, TA1) to the MME 30 in accordance with the TAU procedure (when the destination TA1 is not included in the TA list held by the MRN 20). In the present embodiment, the MRN 20 terminates location registration area information (TAI) broadcast from the destination cell in the MRN 20 and does not relay (broadcast) to the terminal 10 located in the cell of the MRN 20. May be. The terminal 10 (terminal in the train) under the control of the MRN 20 does not make a location registration request: TAU from the terminal 10 even if the MRN 20 moves from the location registration area TA1 to TA2.
　本実施形態においては、ＭＲＮ２０が記憶している配下の端末（ＵＥ１を含む）の識別情報（ＩＤ）のリストを、ＴＡＵメッセージに含めて一回のＴＡＵメッセージの送信で複数の端末の位置登録要求を一括でＭＭＥ３０に送信する（７）。 In the present embodiment, a list of identification information (ID) of subordinate terminals (including UE1) stored in the MRN 20 is included in the TAU message, and a plurality of terminal location registration requests are transmitted by one TAU message transmission. Are collectively transmitted to the MME 30 (7).
　ＴＡＵ（ＭＲＮ，ＴＡ１，端末リスト＝（ＵＥ１、ＵＥ２，・・・）） TAU (MRN, TA1, terminal list = (UE1, UE2,...))
　なお、上記一括ＴＡＵは、ある単位の台数毎の端末のリストに分割して行っても良い。時間的な分散を行えると共に、一度に送るメッセージのサイズが大きくならないようにできる。 The collective TAU may be divided into a list of terminals for a certain number of units. In addition to time distribution, it is possible to prevent the size of messages sent at a time from increasing.
　ＭＭＥ３０は、ＴＡＵの端末ＩＤリストに含まれる端末と識別情報とＴＡ１とを関連付けて記憶部３０１に記憶する（８）。本実施形態では、ＴＡＵには、ＭＲＮ２０のセル情報である位置登録エリアＴＡ２の情報を含めなくてもよい。 The MME 30 associates the terminals included in the TAU terminal ID list, the identification information, and TA1, and stores them in the storage unit 301 (8). In the present embodiment, the TAU may not include information on the location registration area TA2, which is cell information of the MRN 20.
　ＭＭＥ３０は、ＴＡ１を含むＴＡリストを選択し、ＭＲＮ２０に、ＴＡリストを含むＴＡＵ　ＡＣＣＥＰＴを送信する（９）。 The MME 30 selects a TA list including TA1, and transmits a TAU ACCEPT including the TA list to the MRN 20 (9).
＜着信処理＞
　図６は、第２の実施形態におけるページング処理を説明する図である。図６を参照して、端末１０を呼び出す場合の処理を説明する。 <Incoming call processing>
FIG. 6 is a diagram for explaining paging processing in the second embodiment. With reference to FIG. 6, the process in the case of calling the terminal 10 will be described.
　ＭＭＥ３０の記憶部３０１内では、端末１０（ＵＥ１）は、位置登録エリア：ＴＡ１に関連づけられて記憶されている。ＭＭＥ３０は、端末１０に対する着呼を受け、位置登録エリア：ＴＡ１にページングする（１）。 In the storage unit 301 of the MME 30, the terminal 10 (UE1) is stored in association with the location registration area TA1. The MME 30 receives an incoming call to the terminal 10 and pages the location registration area TA1 (1).
　次に、ＭＭＥ３０からページング信号：Ｐａｇｉｎｇ（ＵＥ１、ＴＡ１）を受けたＭＲＮ２０は、配下のセル内（列車内）の端末１０に対するページング信号であることから、当該ページング信号Ｐａｇｉｎｇ（ＵＥ１、ＴＡ１）を、ＭＲＮ提供のセル（トラッキングエリアはＴＡ２）へ中継する（２）。 Next, since the MRN 20 that has received the paging signal: Paging (UE1, TA1) from the MME 30 is a paging signal for the terminal 10 in the subordinate cell (in the train), the paging signal Paging (UE1, TA1) is Relay to the cell provided by the MRN (tracking area is TA2) (2).
　あるいは、ＭＭＥ３０からページング信号：Ｐａｇｉｎｇ（ＵＥ１、ＴＡ１）を受けたＭＲＮ２０は、該ＭＲＮ２０で記憶している端末１０（ＵＥ１）に対するページングであるか否かに関係なくページング信号をＭＲＮ配下のセルに中継してもよい。端末１０（ＵＥ１）は、ＭＲＮ２０のセル：ＴＡ２内に存圏しているので、ＭＲＮ２０が中継したページング信号に応答する。 Alternatively, the MRN 20 that has received the paging signal: Paging (UE1, TA1) from the MME 30 relays the paging signal to the cell under the MRN regardless of whether or not the paging is for the terminal 10 (UE1) stored in the MRN 20 May be. Since the terminal 10 (UE1) exists in the cell: TA2 of the MRN 20, the terminal 10 (UE1) responds to the paging signal relayed by the MRN 20.
＜ＭＲＮにおける端末情報の削除＞
　次に、ＭＲＮ２０が記憶する端末情報の削除処理について説明する。なお、端末情報の削除処理は、第２の実施形態のほか、ＭＲＮ２０が端末情報を記憶する場合の第１の実施形態にも適用可能である。端末１０（ＵＥ１）が、列車を降りる等、ＭＲＮ２０が提供するセル（トラッキングエリアはＴＡ２）とは異なるＴＡ３へ移った後、端末１０は、ＴＡＵ（ＵＥ１，ＴＡ３）を、ＭＭＥ２０に送信する。端末１０からＴＡＵ（ＵＥ１，ＴＡ３）を受けたＭＭＥ３０は、ＵＥ１とＴＡ３を関連付けて記憶部３０１に記憶する。 <Deletion of terminal information in MRN>
Next, terminal information deletion processing stored in the MRN 20 will be described. The terminal information deletion process can be applied to the first embodiment in which the MRN 20 stores terminal information in addition to the second embodiment. After the terminal 10 (UE1) moves to TA3 different from the cell (tracking area is TA2) provided by the MRN 20 such as getting off the train, the terminal 10 transmits TAU (UE1, TA3) to the MME 20. Receiving TAU (UE1, TA3) from the terminal 10, the MME 30 associates UE1 and TA3 and stores them in the storage unit 301.
　しかしながら、その後、ＭＲＮ２０が位置登録エリア間を移動した場合、端末１０の識別情報（ＵＥ１）をＭＲＮ２０に記憶した状態のＭＲＮ２０は、端末１０の識別情報ＵＥ１を端末リストに含んだＴＡＵをＭＭＥ３０へ送ってしまったとする。 However, after that, when the MRN 20 moves between the location registration areas, the MRN 20 in the state where the identification information (UE1) of the terminal 10 is stored in the MRN 20 sends the TAU including the identification information UE1 of the terminal 10 in the terminal list to the MME 30. Suppose you have.
　この場合、再度、ＭＭＥ３０は、ＵＥ１をＴＡ１に関連付けて記憶してしまう。しかしながら、端末１０への着呼に応答してＭＭＥ３０が、ＴＡ１にページングしても、端末１０は、既にＴＡ２から、他のＴＡ３に移動しているため、端末１０の呼び出しに失敗してしまう。 In this case, the MME 30 again stores UE1 in association with TA1. However, even if the MME 30 paging to TA1 in response to an incoming call to the terminal 10, the terminal 10 has already moved from TA2 to another TA3, and thus fails to call the terminal 10.
　本実施形態において、この問題を解決するには、任意の手法が用いられる。以下では、そのうちの一例を説明する。図７は、その一例をシーケンスとして示す図である。図７の例では、ＭＭＥ３０とＭＲＮ２０間に端末記憶削除シグナリングを導入する。以下、図７を参照して、説明する。 In this embodiment, an arbitrary technique is used to solve this problem. Below, an example is demonstrated. FIG. 7 is a diagram showing an example of the sequence. In the example of FIG. 7, terminal storage deletion signaling is introduced between the MME 30 and the MRN 20. Hereinafter, a description will be given with reference to FIG.
　　ＭＲＮ２０はＴＡ１セルに在圏しており、ＭＲＮ２０の位置登録はＭＭＥ３０に対し行われている（１、２）。 The MRN 20 is located in the TA1 cell, and the location registration of the MRN 20 is performed with respect to the MME 30 (1, 2).
　端末１０は、ＭＲＮ２０配下セルに移動し（３）、位置登録を行う（４）。その結果、ＭＲＮ２０は、端末１０（ＵＥ１）を記憶し、ＭＭＥ３０は、端末１０の識別情報（ＵＥ１）とＴＡ１を関連付けて記憶部３０１に記憶する。 The terminal 10 moves to the cell subordinate to the MRN 20 (3) and performs location registration (4). As a result, the MRN 20 stores the terminal 10 (UE1), and the MME 30 stores the identification information (UE1) of the terminal 10 and TA1 in association with each other in the storage unit 301.
　本実施形態では、端末１０がＴＡ１セルではなく、ＭＲＮ２０に在圏していることを示すフラグを備えている。フラグの値は、ＭＲＮ２０で設定され、端末１０からの位置登録要求ＴＡＵ（ＵＥ，ＴＡ２）に対して、位置登録要求：
　ＴＡＵ（ＵＥ，ＴＡ１，ｆｌａｇ＝ｙｅｓ）
がドナー基地局を介してＭＭＥ３０に通知される（４）。 In the present embodiment, a flag indicating that the terminal 10 is located in the MRN 20 instead of the TA1 cell is provided. The value of the flag is set by the MRN 20, and the location registration request for the location registration request TAU (UE, TA2) from the terminal 10 is:
TAU (UE, TA1, flag = yes)
Is notified to the MME 30 via the donor base station (4).
　ＭＲＮ２０は、端末１０の識別情報（ＵＥ１）をＭＲＮ２０の記憶部２０１に記憶する（５）。 The MRN 20 stores the identification information (UE1) of the terminal 10 in the storage unit 201 of the MRN 20 (5).
　ＭＭＥ３０は、端末１０の識別情報（ＵＥ１）と、フラグｆｌａｇの値：ｙｅｓ／Ｎｏを関連付けて記憶部３０１に記憶する（６）。 The MME 30 associates the identification information (UE1) of the terminal 10 with the flag flag value: yes / No and stores it in the storage unit 301 (6).
　その後、端末１０はＭＲＮ２０配下セルから、ＴＡ３セル（≠ＴＡ２）へ移動する（７）。 Thereafter, the terminal 10 moves from the cell under the control of the MRN 20 to the TA3 cell (≠ TA2) (7).
　端末１０は、ＴＡＵ（ＵＥ１，ＴＡ３）をＭＭＥ３０に送信する（８）。 The terminal 10 transmits TAU (UE1, TA3) to the MME 30 (8).
　ＭＭＥ３０は、端末１０が、フラグｆｌａｇ＝ｙｅｓに関連付けられていることから、ＭＲＮ２０に対して、ＭＲＮ２０が保持している端末１０の情報を削除するための処理を行う。ＭＭＥ３０はまず、端末１０が関連付けられているＴＡ１を対象に端末１０のページングを行う（９）。 Since the terminal 10 is associated with the flag flag = yes, the MME 30 performs a process for deleting the information of the terminal 10 held by the MRN 20 with respect to the MRN 20. First, the MME 30 performs paging of the terminal 10 for TA1 to which the terminal 10 is associated (9).
　ＭＲＮ２０は、配下のセルへページング信号を中継する。この場合、端末１０は既にＴＡ３セルへ移動しているため、端末１０によるページング応答は発生しない（１０）。 The MRN 20 relays the paging signal to the subordinate cell. In this case, since the terminal 10 has already moved to the TA3 cell, the paging response by the terminal 10 does not occur (10).
　このことを確認したＭＲＮ３０は、サービス要求（ＳＥＲＶＩＣＥ　ＲＥＱＵＥＳＴ）を実行し（１１）、そのあと、ＭＭＥ３０は、ＭＲＮ２０から、端末１０の情報を記憶部２０１から削除するためのシグナリング手順を開始する（１２）。 Upon confirming this, the MRN 30 executes a service request (SERVICE REQUEST) (11), and then the MME 30 starts a signaling procedure for deleting the information of the terminal 10 from the storage unit 201 from the MRN 20 (12). ).
　ＭＲＮ２０は、端末１０の識別情報（ＵＥ１）をＭＲＮ２０の記憶部２０１から削除する。 The MRN 20 deletes the identification information (UE1) of the terminal 10 from the storage unit 201 of the MRN 20.
　シグナリング手順の完了後、ＭＭＥ３０は、端末１０の識別情報と、ＴＡ３を関連付けて記憶部３０１に記憶する（１４）。 After completion of the signaling procedure, the MME 30 associates the identification information of the terminal 10 with TA3 and stores it in the storage unit 301 (14).
　ＭＭＥ３０は、位置登録要求：ＴＡＵ（ＵＥ１、ＴＡ３）に対する応答ＴＡＵ　ＡＣＣＥＰＴを端末１０に送信する（１５）。 The MME 30 transmits a location registration request: a response TAU ACCEPT to the TAU (UE1, TA3) to the terminal 10 (15).
＜ＭＲＮの構成例＞
　次に、図９を参照して、第２の実施形態のＭＲＮ２０の構成の一例を説明する。図９において、ＴＡＵ処理部２０３は、端末１０から移動登録要求：ＴＡＵ（ＵＥ１、ＴＡ２）を受信すると、ＭＲＮ２０のセルの識別情報（移動位置登録エリア）を、ＭＲＮ２０が在圏する位置登録エリア情報（例えば図４のＴＡ０）で置き換えてドナー基地局を介してＭＭＥ３０へ送信する。端末情報管理部２０６は、例えば、移動登録要求を行った端末の識別情報を端末情報記憶部２０１に記憶し、ＭＲＮ２０のセルに対するページングに応答がない端末に対して、ＭＭＥ３０との間の端末情報の記憶削除シグナリングに基づき、該端末の識別情報を、端末情報記憶部２０１から削除する。 <Configuration example of MRN>
Next, an example of the configuration of the MRN 20 of the second embodiment will be described with reference to FIG. In FIG. 9, when receiving the movement registration request: TAU (UE1, TA2) from the terminal 10, the TAU processing unit 203 uses the identification information (movement position registration area) of the cell of the MRN 20 as the position registration area information in which the MRN 20 is located. (For example, TA0 in FIG. 4) is transmitted to the MME 30 via the donor base station. The terminal information management unit 206 stores, for example, the identification information of the terminal that has made the mobile registration request in the terminal information storage unit 201, and the terminal information between the MME 30 and the terminal that does not respond to paging for the cell of the MRN 20 The terminal identification information is deleted from the terminal information storage unit 201 based on the storage deletion signaling.
＜ＭＭＥの構成例＞
　次に、図１０を参照して、第２の実施形態のＭＭＥ３０の構成の一例を説明する。ＴＡ情報管理部３０３は、ＭＲＮ２０のセルに在圏する端末の位置登録エリア情報を、前記第１の実施形態のように、移動位置登録エリア（ＭＴＡ）として１つ上の階層のＭＲＮ２０の位置登録エリア（ＭＴＡが従属する位置登録エリア）に関連付けて記憶部３０１に記憶することは行わず、ＭＲＮ２０の位置登録エリアとして記憶する。 <Configuration example of MME>
Next, an example of the configuration of the MME 30 according to the second embodiment will be described with reference to FIG. The TA information management unit 303 uses the location registration area information of the terminals located in the cell of the MRN 20 as the location registration area (MTA) of the MRN 20 in the next higher layer as in the first embodiment. It is not stored in the storage unit 301 in association with the area (location registration area on which the MTA is subordinate), but is stored as the location registration area of the MRN 20.
　ＴＡ情報管理部３０３は、ＭＲＮ２０からのＴＡＵにフラグ情報が設定されていると、端末の識別情報と、フラグの値を関連付けて記憶する。また、ＴＡ情報管理部３０３は、ＭＲＮ２０から一括ＴＡＵを受け取ると、記憶部３０１に、一括ＴＡＵに含まれる端末リストの各端末の識別情報に対応させて、ＭＲＮ２０の位置登録エリアを記憶する。なお、制御部３０７は、ＭＲＮ２０と端末削除のシグナリングを行う。 When the flag information is set in the TAU from the MRN 20, the TA information management unit 303 stores the terminal identification information and the flag value in association with each other. Further, when receiving the collective TAU from the MRN 20, the TA information management unit 303 stores the location registration area of the MRN 20 in the storage unit 301 in association with the identification information of each terminal in the terminal list included in the collective TAU. Note that the control unit 307 performs terminal deletion signaling with the MRN 20.
＜変形例＞
　例えば、列車の各車両に一つずつＭＲＮ２０を設置するような場合など、複数のＭＲＮ２０が同時に移動する場合にも適用可能である。これら複数のＭＲＮが提供するセルに共通のＴＡを使ってもよい。複数のＭＲＮ間を、端末が移動しても、ＴＡが変わることはない。この為、端末１０では、位置登録要求：ＴＡＵは行わなくてもよい。このため、移動先のＭＲＮが在圏するセルのＴＡと、端末１０とがＭＭＥ３０内で関連付けられることはない。このため、端末への呼び出しができなくなるかもしれない。そのため、これら複数のＭＲＮ２０が在圏するセルのＴＡが全て等しくなるように工夫されていればよい。ＭＭＥ３０が端末１０と関連づけているＴＡと、移動先のＭＲＮが在圏するＴＡが等しいので、端末を呼び出すことができる。ただし、端末１０の移動先のＭＲＮでＴＡＵを行わないため、端末を記憶していないことを考慮し、ＭＲＮ２０は、記憶しているＵＥに対するページングであるかどうかに関係なく、ＭＲＮ２０配下のセルへページング信号を中継する。複数のＭＲＮ２０が同時に移動し、在圏するＴＡが変わった場合には、端末１０がＴＡＵを行ったＭＲＮ２０により、一括ＴＡＵが実施される。 <Modification>
For example, the present invention can also be applied to a case where a plurality of MRNs 20 move at the same time, such as when one MRN 20 is installed in each train vehicle. A common TA may be used for cells provided by the plurality of MRNs. The TA does not change even if the terminal moves between a plurality of MRNs. For this reason, the terminal 10 may not perform the location registration request: TAU. For this reason, the TA of the cell in which the destination MRN is located is not associated with the terminal 10 within the MME 30. This may make it impossible to call the terminal. Therefore, it suffices to devise so that the TAs of the cells where the plurality of MRNs 20 are located are all equal. Since the TA associated with the terminal 10 by the MME 30 is equal to the TA in which the destination MRN is located, the terminal can be called. However, since TAU is not performed in the MRN to which the terminal 10 is moved, considering that the terminal is not stored, the MRN 20 moves to the cell under the MRN 20 regardless of whether or not the paging is performed for the stored UE. Relay the paging signal. When a plurality of MRNs 20 move at the same time and the TAs in the area change, the collective TAU is performed by the MRN 20 that the terminal 10 has performed TAU.
　複数のＭＲＮ２０が在圏するセルのＴＡを全て等しくするための手法としては、例えば図８に示したように、複数のＭＲＮ２０に共通に接続する一つのセンターユニット７０を配置し、セルの選択処理は、センターユニット７０が代表して行う構成としてもよい。 For example, as shown in FIG. 8, one center unit 70 commonly connected to the plurality of MRNs 20 is arranged as a method for making all the TAs of the cells in which the plurality of MRNs 20 are located equal. The center unit 70 may be representatively configured.
　図８を参照すると、センターユニット７０は、車両６０－１、６０－２毎のＭＲＮ１、２（２０－１、２０－２）に接続されており、ＭＲＮ１、２（２０－１、２０－２）のセル（ＴＡ２）に在圏する端末を、ＭＲＮ毎に記憶管理する。センターユニット７０は、ＭＲＮ１（２０－１）、ＭＲＮ２（２０－２）に有線７０３で電気的に接続され、ドナー基地局４０と通信するアンテナ７０２を有する。コア網５０のＭＭＥ３０では、端末の位置登録エリア情報（ＴＡ情報）として、複数のＭＲＮ１、ＭＲＮ２を１つのＭＲＮとして、ＭＲＮの現在の位置登録エリア情報（ＴＡ１）を記憶している。 Referring to FIG. 8, center unit 70 is connected to MRN 1 and 2 (20-1 and 20-2) for each of vehicles 60-1 and 60-2, and MRN 1 and 2 (20-1, 20-2). ), The terminal located in the cell (TA2) is stored and managed for each MRN. The center unit 70 is electrically connected to the MRN1 (20-1) and MRN2 (20-2) via a wire 703, and has an antenna 702 that communicates with the donor base station 40. The MME 30 of the core network 50 stores the current location registration area information (TA1) of the MRN as a plurality of MRN1 and MRN2 as one MRN as location registration area information (TA information) of the terminal.
　図８の例では、センターユニット７０は、ＭＲＮ１（２０－１）のセル（ＴＡ２）に在圏する端末１０（ＵＥ１、ＵＥ２）をＭＲＮ１に対応して記憶部７０１に記憶し、ＭＲＮ２（２０－２）のセル（ＴＡ２）に在圏する端末１０（ＵＥ３、ＵＥ４）をＭＲＮ２に対応して記憶部７０１に記憶する。 In the example of FIG. 8, the center unit 70 stores the terminals 10 (UE1, UE2) located in the cell (TA2) of the MRN1 (20-1) in the storage unit 701 corresponding to the MRN1, and the MRN2 (20- The terminal 10 (UE3, UE4) located in the cell (TA2) of 2) is stored in the storage unit 701 corresponding to the MRN2.
　車両６０－１、６０－２にそれぞれ配設されたＭＲＮ１、ＭＲＮ２がＴＡ１にいるとき、ドナー基地局４０からＴＡ１に向けて報知されるページング信号Ｐａｇｉｎｇ（ＵＥ１，ＴＡ１）を受けると、センターユニット７０は、記憶部７０１を参照して、端末（ＵＥ１）がＭＲＮ１のセルに在圏していることを認識し、ＭＲＮ１（２０－１）に対して、ＭＲＮ１（２０－１）のセルにページング信号Ｐａｇｉｎｇ（ＵＥ１，ＴＡ２）を送信するように指示する。この指示を受けたＭＲＮ１（２０－１）はセル（ＴＡ２）にページング信号を報知することで、端末（ＵＥ１）を呼び出す。 When the paging signal Paging (UE1, TA1) broadcast from the donor base station 40 to TA1 is received when the MRN1 and MRN2 respectively disposed in the vehicles 60-1 and 60-2 are at TA1, the center unit 70 Refers to the storage unit 701 and recognizes that the terminal (UE1) is located in the cell of MRN1, and sends a paging signal to the cell of MRN1 (20-1) with respect to MRN1 (20-1). Instructs to transmit Paging (UE1, TA2). Receiving this instruction, MRN1 (20-1) calls the terminal (UE1) by broadcasting a paging signal to the cell (TA2).
　上記したように、第２の例示的な実施形態によれば、ＭＲＮ２０が、位置登録エリア：ＴＡ間を移動し、位置登録要求：ＴＡＵをＭＭＥ３０に送信する場合、ＭＲＮ２０は、当該ＴＡＵ内に、ＭＲＮ２０のセルに在圏する１つ又は複数の端末のリストを含めて送信し、一回のＴＡＵ（一括ＴＡＵ）で、複数の端末の位置登録更新を可能としている。また、端末へのページング信号を受けたＭＲＮ２０では配下の端末に中継する。 As described above, according to the second exemplary embodiment, when the MRN 20 moves between the location registration area: TA and transmits the location registration request: TAU to the MME 30, the MRN 20 A list of one or a plurality of terminals residing in the cell of the MRN 20 is transmitted, and the location registration update of the plurality of terminals can be performed by one TAU (collective TAU). Also, the MRN 20 that has received the paging signal to the terminal relays it to the subordinate terminal.
　第２の例示的な実施形態によれば、端末は、距離的に近いＭＲＮ２０と通信するため、低消費電力化を実現できる。また、ＭＲＮ２０が、一括でＴＡＵを行うため、列車がＴＡ境界を横断した際に、乗客の端末が一斉にＴＡＵを行いネットワークに負荷が集中するなどの現象を防ぐことができる。 According to the second exemplary embodiment, since the terminal communicates with the MRN 20 that is close in distance, low power consumption can be realized. In addition, since the MRN 20 performs TAU in a lump, when the train crosses the TA boundary, it is possible to prevent a phenomenon such that the passenger terminals perform TAU all at once and the load is concentrated on the network.
　第２の例示的な実施形態では、ＬＴＥ等への適用において、端末と基地局は変更不要である。ＭＲＮ２０は、
・下の端末から送信されたＴＡＵにおけるＴＡＩ（Ｔｒａｃｋｉｎｇ　Ａｒｅａ　Ｉｄｅｎｔｉｔｙ）の変換及び変換したＴＡＵのＭＭＥへの送信、
・ＭＲＮ２０の位置登録要求：ＴＡＵへの端末リストの挿入（一括ＴＡＵ）、
・ページングを配下の端末への中継、
等を行う。 In the second exemplary embodiment, the terminal and the base station need not be changed in application to LTE or the like. MRN20 is
-Conversion of TAI (Tracking Area Identity) in the TAU transmitted from the lower terminal and transmission of the converted TAU to the MME,
-Location registration request of MRN20: Insertion of terminal list into TAU (collective TAU),
・ Relay to a terminal under paging,
Etc.
　第２の例示的な実施形態では、ＭＭＥ３０は、第１の例示的な実施形態のように、ＴＡとＭＴＡ（Moving TA）を特に区別しないので、ＭＭＥ３０において、ＴＡを階層化して記憶管理することは必要とされない。このため、ＭＭＥ３０におけるＴＡ情報管理部３０３の処理を簡易化している。 In the second exemplary embodiment, the MME 30 does not particularly distinguish between TA and MTA (Moving TA) as in the first exemplary embodiment. Therefore, the MME 30 stores and manages the TA in a hierarchy. Is not required. For this reason, the process of the TA information management unit 303 in the MME 30 is simplified.
　第２の例示的な実施形態では、ＭＭＥ３０とＭＲＮ２０は、ＭＲＮ２０が記憶しているＵＥを削除するシグナリング手順をサポートする構成とされる。 In the second exemplary embodiment, the MME 30 and the MRN 20 are configured to support a signaling procedure for deleting the UE stored in the MRN 20.
　なお、第１、第２の実施形態におけるさらなる変形例として、ＨＳＳにおいて、該ＭＲＮ２０配下の端末を行先別にグループに分け、グループ化された端末の集合に対して、グループＩＤ等を付与し、該ＭＲＮ２０のＩＤと該端末集合のグループＩＤと、個々の端末のＩＤとの関係を記憶部でテーブルとして記憶保持するようにしてもよい。 As a further modification of the first and second embodiments, in the HSS, the terminals under the MRN 20 are divided into groups according to destinations, and a group ID or the like is given to a set of grouped terminals, The relationship between the ID of the MRN 20, the group ID of the terminal set, and the ID of each terminal may be stored and held as a table in the storage unit.
　この変形例において、各端末の位置登録エリア情報（ＴＡ情報）は、ＭＲＮ２０の位置登録情報と同一のものとして管理するようにしてもよい。グルーピングされた端末集合は、列車から下車すると、グループの解除を行い、個別端末としての位置登録管理を行うようにしてもよい。なお、端末のグルーピングを、例えば、加入者、鉄道事業者等の了承のもとで、端末を保持する加入者の行先情報（チケット情報等から取得）に基づき、行うようにしてもよい。 In this modification, the location registration area information (TA information) of each terminal may be managed as the same as the location registration information of the MRN 20. When the grouped terminal set gets off the train, the group may be canceled and location registration management as an individual terminal may be performed. Note that terminal grouping may be performed based on destination information (obtained from ticket information or the like) of a subscriber holding the terminal, for example, with the approval of a subscriber, a railway operator, or the like.
　なお、前記第１の例示的な実施形態において、ある駅で、列車に多数の乗客が乗車し、ＭＲＮ２０のセルにほぼ同時に入った場合等、アイドルモードの複数の端末からの位置登録要求：ＴＡＵ（図１、図２の（２））を所定の時間範囲内に受けたＭＲＮ２０において、個々の端末からの位置登録要求：ＴＡＵを個別にＭＭＥ３０へ送信する代わりに、ＴＡＵを送信した複数の端末の識別情報の集まりである端末リストと、セル情報：ＴＡ２を含めた一つ位置登録要求：ＴＡＵ（端末リスト＝（ＵＥ１，ＵＥ２，・・・），ＴＡ２）で送信するようにしてもよいことは勿論である。 In the first exemplary embodiment, when a large number of passengers get on the train at a certain station and enter the cell of the MRN 20 almost simultaneously, location registration requests from a plurality of terminals in the idle mode: TAU In the MRN 20 that has received (2 in FIG. 1 and FIG. 2) within a predetermined time range, a plurality of terminals that have transmitted TAUs instead of individually transmitting location registration requests: TAUs to the MME 30. May be transmitted in a terminal list that is a collection of identification information and cell information: one location registration request including TA2 (TAU (terminal list = (UE1, UE2,...), TA2)). Of course.
　ＭＲＮが設置される移動体は、列車（高速列車）等に制限されるものでなく、複数の端末を収容する任意の車両（市電、地下鉄、高架鉄道、在来線、車等）に適用可能である。 The mobile unit where the MRN is installed is not limited to trains (high-speed trains), but can be applied to any vehicle (city train, subway, elevated railway, conventional line, car, etc.) that accommodates multiple terminals. It is.
　また、上記の各実施形態におけるアイドルモードは、RRC Idle Modeであることを前提に説明されたが、ECM（EPS（Evolved Packet System） Connection Management）-IDLE MODE/STATEに置き換えて又は併用して、各実施形態が実施されてもよい。 In addition, the idle mode in each of the above embodiments has been described on the assumption that RRC Idle Mode, but ECM (EPS (Evolved Packet System) Connection Management) -IDLE MODE / STATE is replaced or used together Each embodiment may be implemented.
　上記した実施形態は、例えば以下のように付記される（ただし、以下に制限されない）。 For example, the above-described embodiment is added as follows (but is not limited to the following).
(付記１)
　移動体に設置されたリレーノードを備えた通信システムであって、
　前記リレーノードは、
　前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する、ことを特徴とする通信システム。 (Appendix 1)
A communication system including a relay node installed in a mobile body,
The relay node is
A communication system characterized by notifying at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
(付記２)
　付記１に記載の通信システムであって、
　前記リレーノードに無線局を介して接続する移動管理装置をさらに備え、
　前記リレーノードは、
　前記リレーノードのセルへ入った前記端末からの位置登録要求を前記移動管理装置に送信し、前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を、前記端末に通知する、ことを特徴とする通信システム。 (Appendix 2)
The communication system according to attachment 1, wherein
A mobility management device connected to the relay node via a wireless station;
The relay node is
Transmitting a location registration request from the terminal that has entered the cell of the relay node to the mobility management device, receiving a response signal to the location registration request from the mobility management device, and included in the response signal of the relay node A communication system characterized by notifying the terminal of information obtained by adding the location registration area information provided by the relay node to location registration area information.
(付記３)
　前記リレーノードは、前記リレーノードのセルに在圏する前記端末に対して、前記リレーノードが提供する前記位置登録エリア情報を報知する、ことを特徴とする付記１記載の通信システム。 (Appendix 3)
The communication system according to claim 1, wherein the relay node notifies the location registration area information provided by the relay node to the terminal located in a cell of the relay node.
(付記４)
　前記移動管理装置は、
　前記端末から前記リレーノードを介して送信された位置登録要求を受信すると、
　前記端末の位置登録エリア情報として、
　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する、ことを特徴とする付記２又は３記載の通信システム。 (Appendix 4)
The mobility management device
When receiving a location registration request transmitted from the terminal via the relay node,
As the location registration area information of the terminal,
The location registration area information provided by the relay node in which the terminal is located is stored in a storage unit as movement location registration area information in association with the current location registration area of the relay node. The communication system according to Supplementary Note 2 or 3.
(付記５)
　前記移動管理装置は、
　新たな位置登録エリアに入った前記リレーノードから位置登録要求を受信すると、
　前記記憶部に記憶された前記リレーノードの位置登録エリア情報を、前記新たな位置登録エリアで更新し、前記端末の位置登録エリア情報として、前記リレーノードの前記新たな位置登録エリアに前記移動位置登録エリア情報を関連させて前記記憶部に記憶する、ことを特徴とする付記４記載の通信システム。 (Appendix 5)
The mobility management device
When a location registration request is received from the relay node that has entered a new location registration area,
The location registration area information of the relay node stored in the storage unit is updated in the new location registration area, and the moving location is added to the new location registration area of the relay node as location registration area information of the terminal. The communication system according to appendix 4, wherein registration area information is associated and stored in the storage unit.
(付記６)
　前記移動管理装置は、前記端末への着信が到来すると、前記記憶部を参照して前記端末の位置登録エリア情報を検索し、
　前記端末の位置登録エリア情報が、前記リレーノードの位置登録エリアに関連付けされた前記移動位置登録エリアの情報を含む場合、前記リレーノードの前記位置登録エリアにページング信号を報知し、
　前記リレーノードは、前記移動管理装置からの前記ページング信号を受けると、前記リレーノードの前記セルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする付記４又は５記載の通信システム。 (Appendix 6)
When the mobile management device receives an incoming call to the terminal, the mobile management device searches the location registration area information of the terminal with reference to the storage unit,
When the location registration area information of the terminal includes information on the movement location registration area associated with the location registration area of the relay node, a paging signal is notified to the location registration area of the relay node,
6. The communication system according to appendix 4 or 5, wherein when the relay node receives the paging signal from the mobility management device, the relay node transmits the paging signal to the cell of the relay node and calls the terminal.
(付記７)
　移動体に設置され、無線局を介して移動管理装置に接続するリレーノードであって、
　前記リレーノードのセルに在圏する端末に対して、少なくとも、前記リレーノードが提供する位置登録エリアの情報を通知する手段を備えた、ことを特徴とするリレーノード。 (Appendix 7)
A relay node installed in a mobile body and connected to a mobility management device via a radio station,
A relay node comprising: means for notifying at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
(付記８)
　前記リレーノードのセルへ入った前記端末からの位置登録要求を移動管理装置に送信し、前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を、前記端末に通知する、ことを特徴とする付記７記載のリレーノード。 (Appendix 8)
A location registration request from the terminal that has entered the cell of the relay node is transmitted to a mobility management device, a response signal to the location registration request is received from the mobility management device, and the location of the relay node included in the response signal The relay node according to appendix 7, wherein the terminal is notified of information obtained by adding the location registration area information provided by the relay node to the registration area information.
(付記９)
　前記リレーノードのセルに在圏する前記端末に対して、前記リレーノードが提供する前記位置登録エリア情報を報知する、ことを特徴とする付記７又は８記載のリレーノード。 (Appendix 9)
The relay node according to appendix 7 or 8, wherein the location registration area information provided by the relay node is notified to the terminal located in the cell of the relay node.
(付記１０)
　移動体に設置されたリレーノードに無線局を介して接続する移動管理装置であって、
　端末から前記リレーノードを介して送信された位置登録要求を受信すると、
　前記端末の位置登録エリア情報として、
　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する手段を備えた、ことを特徴とする移動管理装置。 (Appendix 10)
A mobility management device that connects to a relay node installed in a mobile body via a radio station,
When receiving a location registration request transmitted from the terminal via the relay node,
As the location registration area information of the terminal,
The location registration area information provided by the relay node in which the terminal is located is provided as means for storing in a storage unit in association with the current location registration area of the relay node as movement location registration area information. A mobility management device characterized by that.
(付記１１)
　新たな位置登録エリアに入った前記リレーノードから位置登録要求を受信すると、
　前記記憶部に記憶された前記リレーノードの位置登録エリア情報を、前記新たな位置登録エリアで更新し、前記端末の位置登録エリア情報として、前記リレーノードの前記新たな位置登録エリアに前記移動位置登録エリア情報を関連させて前記記憶部に記憶する、ことを特徴とする付記１０記載の移動管理装置。 (Appendix 11)
When a location registration request is received from the relay node that has entered a new location registration area,
The location registration area information of the relay node stored in the storage unit is updated in the new location registration area, and the moving location is added to the new location registration area of the relay node as location registration area information of the terminal. The mobility management apparatus according to appendix 10, wherein registration area information is associated and stored in the storage unit.
(付記１２)
　前記端末への着信が到来すると、前記記憶部を参照して前記端末の位置登録エリア情報を検索し、
　前記端末の位置登録エリア情報が、前記リレーノードの位置登録エリアに関連付けされた前記移動位置登録エリアの情報を含む場合、
　前記リレーノードの前記位置登録エリアにページング信号を報知する手段を備え、
　前記リレーノードは、前記移動管理装置からの前記ページング信号を受けると、前記リレーノードの前記セルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする付記１０又は１１記載の移動管理装置。 (Appendix 12)
When an incoming call arrives at the terminal, the location registration area information of the terminal is searched with reference to the storage unit,
When the location registration area information of the terminal includes information of the movement location registration area associated with the location registration area of the relay node,
Means for reporting a paging signal to the location registration area of the relay node;
12. The mobility management device according to appendix 10 or 11, wherein, upon receiving the paging signal from the mobility management device, the relay node transmits a paging signal to the cell of the relay node and calls the terminal. .
(付記１３)
　移動体に設置されたリレーノードが、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する、ことを特徴とする通信制御方法。 (Appendix 13)
A communication control method, wherein a relay node installed in a mobile body notifies at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
(付記１４)
　移動体に設置されたリレーノードと、
　前記リレーノードに無線局を介して接続する移動管理装置と、
　を備えた通信システムであって、
　前記リレーノードのセルへ移動した前記端末は、位置登録要求を、前記リレーノードに送信し、
　前記リレーノードは、前記端末からの前記位置登録要求に含まれる位置登録エリア情報を、前記リレーノードの位置登録エリア情報に書き換えて、前記移動管理装置に送信し、
　前記移動管理装置では、前記端末の位置登録エリアとして、前記リレーノードの位置登録エリアを記憶部に記憶する、ことを特徴とする通信システム。 (Appendix 14)
A relay node installed in the mobile body;
A mobility management device connected to the relay node via a radio station;
A communication system comprising:
The terminal that has moved to the cell of the relay node transmits a location registration request to the relay node,
The relay node rewrites the location registration area information included in the location registration request from the terminal to the location registration area information of the relay node, and transmits the location registration area information to the mobility management device.
The mobility management device stores a location registration area of the relay node in a storage unit as a location registration area of the terminal.
(付記１５)
　前記リレーノードが新たな位置登録エリアに入り、位置登録を行う場合、前記リレーノードは、前記リレーノードの位置登録要求に、前記リレーノードのセルに在圏する１つ又は複数の端末の情報を含めて一括で前記移動管理装置に送信し、
　前記移動管理装置は、前記リレーノードの位置登録要求を受け、前記位置登録要求に含まれている前記１つ又は複数の端末の位置登録エリア情報として、前記新たな位置登録エリアを、前記記憶部に記憶する、ことを特徴とする付記１４記載の通信システム。 (Appendix 15)
When the relay node enters a new location registration area and performs location registration, the relay node adds information on one or more terminals located in the cell of the relay node to the location registration request of the relay node. Including the batch transmission to the mobility management device,
The mobility management device receives the location registration request of the relay node, and stores the new location registration area as the location registration area information of the one or more terminals included in the location registration request. The communication system according to appendix 14, wherein the communication system is stored.
(付記１６)
　前記移動管理装置では、前記端末への着信が到来すると、前記記憶部を参照して、前記リレーノードの位置登録エリアにページング信号を報知し、
　前記リレーノードは、前記移動管理装置から前記ページング信号を受けると、前記リレーノードのセルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする付記１４又は１５記載の通信システム。 (Appendix 16)
In the mobility management device, when an incoming call arrives at the terminal, the paging signal is notified to the location registration area of the relay node with reference to the storage unit,
16. The communication system according to appendix 14 or 15, wherein when the relay node receives the paging signal from the mobility management device, the relay node transmits the paging signal to a cell of the relay node and calls the terminal.
(付記１７)
　前記リレーノードは、前記ページング信号に対する前記端末からの応答がない場合、前記移動管理装置と通信し、前記端末の識別情報を、前記リレーノードのセルに在圏する端末を記憶する記憶部から削除する、ことを特徴とする付記１６記載の通信システム。 (Appendix 17)
When there is no response from the terminal to the paging signal, the relay node communicates with the mobility management device and deletes the identification information of the terminal from the storage unit that stores the terminal located in the cell of the relay node The communication system according to supplementary note 16, characterized in that:
(付記１８)
　前記移動体に含まれる複数の前記リレーノードに接続されるセンターユニットを備え、
　複数の前記リレーノードのセルには、同一の位置登録エリア情報が割り当てられ、
　前記センターユニットは、
　複数の前記リレーノードのセルにそれぞれ在圏する複数の端末の各々を、前記端末が在圏する前記リレーノードに対応付けて記憶部に記憶し、
　前記移動管理装置からのページング信号を受けると、前記記憶部を参照して、着信先の端末が在圏する前記リレーノードに、前記ページング信号を振り分ける、ことを特徴とする付記１５乃至１７のいずれか一に記載の通信システム。 (Appendix 18)
A center unit connected to the plurality of relay nodes included in the mobile body;
The same location registration area information is allocated to the cells of the plurality of relay nodes,
The center unit is
Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located,
Any one of appendixes 15 to 17, wherein when the paging signal is received from the mobility management device, the paging signal is distributed to the relay node where the destination terminal is located by referring to the storage unit A communication system according to claim 1.
(付記１９)
　リレーノードのセルへ移動した端末からの位置登録要求を受けると、前記端末からの前記位置登録要求に含まれる現在の端末の位置登録エリア情報を、前記リレーノードの現在の位置登録エリア情報に書き換えて、移動管理装置に送信する、ことを特徴とするリレーノード。 (Appendix 19)
Upon receiving a location registration request from a terminal that has moved to the cell of the relay node, the location registration area information of the current terminal included in the location registration request from the terminal is rewritten to the current location registration area information of the relay node. And transmitting to the mobility management device.
(付記２０)
　前記リレーノードが新たな位置登録エリアに入り、位置登録要求を行う場合、前記リレーノードは、前記リレーノードのセルに在圏する１つ又は複数の端末の情報を、位置登録要求に含め、一括で前記移動管理装置に送信し、
　前記移動管理装置は、前記１つ又は複数の端末の位置登録エリア情報として、前記リレーノードの前記新たな位置登録エリア情報を、前記記憶部に記憶する、ことを特徴とする付記１９記載のリレーノード。 (Appendix 20)
When the relay node enters a new location registration area and makes a location registration request, the relay node includes information on one or more terminals located in the cell of the relay node in the location registration request, and To the mobility management device,
The relay according to claim 19, wherein the mobility management device stores the new location registration area information of the relay node in the storage unit as location registration area information of the one or more terminals. node.
(付記２１)
　前記リレーノードは、前記移動管理装置からのページング信号に対して前記端末からの応答がない場合には、前記移動管理装置と通信し、前記端末を、前記リレーノードのセルに在圏する端末リストから削除する、ことを特徴とする付記１９又は２０記載のリレーノード。 (Appendix 21)
When there is no response from the terminal to the paging signal from the mobility management device, the relay node communicates with the mobility management device, and the terminal is located in the cell of the relay node. The relay node according to appendix 19 or 20, wherein the relay node is deleted from the relay node.
(付記２２)
　移動体に設置されたリレーノードに無線局を介して接続する移動管理装置であって、
　前記リレーノードのセルへ移動した端末は位置登録要求を前記リレーノードに送信し、前記リレーノードは、前記端末からの前記位置登録要求に含まれる現在の端末の位置登録エリア情報を、前記リレーノードの現在の位置登録エリア情報に書き換えて、前記移動管理装置に送信し、
　前記移動管理装置では、前記端末の位置登録エリアとして、前記リレーノードの位置登録エリアを記憶部に記憶する、ことを特徴とする移動管理装置。
(付記２３)
　前記リレーノードが新たな位置登録エリアに入り、前記リレーノードで位置登録を行う場合、前記リレーノードは、前記リレーノードの位置登録要求に、前記リレーノードのセルに在圏する１つ又は複数の端末の情報を含め、一括で前記移動管理装置に送信し、
　前記リレーノードからの一括の位置登録要求を受けた前記移動管理装置は、前記１つ又は複数の端末の位置登録エリア情報として、前記新たな位置登録エリアを前記記憶部に記憶する、ことを特徴とする付記２２記載の移動管理装置。 (Appendix 22)
A mobility management device that connects to a relay node installed in a mobile body via a radio station,
The terminal that has moved to the cell of the relay node transmits a location registration request to the relay node, and the relay node uses the location registration area information of the current terminal included in the location registration request from the terminal as the relay node. Is rewritten to the current location registration area information and sent to the mobility management device,
In the mobility management device, the location registration area of the relay node is stored in a storage unit as the location registration area of the terminal.
(Appendix 23)
When the relay node enters a new location registration area and performs location registration at the relay node, the relay node may request one or more of the relay node's cell in the relay node location registration request. Including terminal information, send to the mobility management device in a batch,
The mobility management device that has received a batch location registration request from the relay node stores the new location registration area in the storage unit as location registration area information of the one or more terminals. The mobility management device according to appendix 22.
(付記２４)
　前記端末への着信が到来すると、前記記憶部を参照して、前記端末の位置登録エリアとして記憶されている前記リレーノードの位置登録エリアにページング信号を報知し、
　前記リレーノードは、前記ページング信号を受けると、前記リレーノードのセルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする付記２２又は２３記載の移動管理装置。 (Appendix 24)
When an incoming call arrives at the terminal, the paging signal is notified to the location registration area of the relay node stored as the location registration area of the terminal with reference to the storage unit,
24. The mobility management apparatus according to appendix 22 or 23, wherein when the relay node receives the paging signal, the relay node transmits the paging signal to a cell of the relay node and calls the terminal.
(付記２５)
　前記リレーノードにおいて、前記ページング信号に対する前記端末からの応答がない場合に、前記移動管理装置と通信し、
　前記移動管理装置は、前記前記リレーノードに対して、前記リレーノードのセルに在圏する端末を記憶する記憶部から削除するように指示する、ことを特徴とする付記２４記載の移動管理装置。 (Appendix 25)
In the relay node, when there is no response from the terminal to the paging signal, communicate with the mobility management device,
25. The mobility management apparatus according to appendix 24, wherein the mobility management apparatus instructs the relay node to delete from a storage unit that stores a terminal located in a cell of the relay node.
(付記２６)
　移動体に含まれる複数のリレーノードに接続され、無線局を介して移動管理装置に接続されるセンターユニット装置であって、
　複数の前記リレーノードのセルには同一の位置登録エリア情報が割り当てられ、
　前記センターユニットは、
　複数の前記リレーノードのセルにそれぞれ在圏する複数の端末の各々を、前記端末が在圏する前記リレーノードに対応付けて記憶部に記憶し、
　前記移動管理装置からページング信号を受けると、前記記憶部を参照して、着信先の端末が在圏する前記リレーノードに、前記ページング信号を振り分ける、ことを特徴とするセンターユニット装置。 (Appendix 26)
A center unit device connected to a plurality of relay nodes included in a mobile body and connected to a mobility management device via a radio station,
The same location registration area information is assigned to a plurality of cells of the relay node,
The center unit is
Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located,
When receiving a paging signal from the mobility management device, the center unit device distributes the paging signal to the relay node in which the destination terminal is located by referring to the storage unit.
(付記２７)
　リレーノードのセルへ入った端末は、位置登録要求を、前記リレーノードに送信し、
　前記リレーノードは、前記端末からの前記位置登録要求に含まれる位置登録エリア情報を、前記リレーノードの現在の位置登録エリア情報に書き換えて、移動管理装置に送信し、
　前記移動管理装置では、前記端末の位置登録エリアとして、前記リレーノードの位置登録エリアを記憶部に記憶する、ことを特徴とする通信制御方法。 (Appendix 27)
The terminal entering the cell of the relay node transmits a location registration request to the relay node,
The relay node rewrites the location registration area information included in the location registration request from the terminal to the current location registration area information of the relay node, and transmits to the mobility management device,
In the mobility management apparatus, the location registration area of the relay node is stored in a storage unit as the location registration area of the terminal.
(付記２８)
　前記リレーノードが新たな位置登録エリアに入り、前記リレーノードで位置登録を行う場合、前記リレーノードは、前記リレーノードの位置登録要求に、前記リレーノードのセルに在圏する１つ又は複数の端末の情報を含め、一括で前記移動管理装置に送信し、
　前記移動管理装置は、前記１つ又は複数の端末の位置登録エリア情報として、前記新たな位置登録エリアを前記記憶部に記憶する、ことを特徴とする付記２７記載の通信制御方法。 (Appendix 28)
When the relay node enters a new location registration area and performs location registration at the relay node, the relay node may request one or more of the relay node's cell in the relay node location registration request. Including terminal information, send to the mobility management device in a batch,
The communication control method according to appendix 27, wherein the mobility management device stores the new location registration area in the storage unit as location registration area information of the one or more terminals.
(付記２９)
　前記移動管理装置では、前記端末への着信があると、前記記憶部を参照して、前記リレーノードの位置登録エリアにページング信号を報知し、
　前記リレーノードは、前記ページング信号を受けると、前記リレーノードのセルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする付記２７又は２８記載の通信制御方法。 (Appendix 29)
In the mobility management device, when there is an incoming call to the terminal, the storage unit is referred to notify a paging signal to the location registration area of the relay node,
29. The communication control method according to appendix 27 or 28, wherein when the relay node receives the paging signal, the relay node transmits the paging signal to a cell of the relay node and calls the terminal.
(付記３０)
　前記リレーノードは、前記ページング信号に対する前記端末からの応答がない場合、前記移動管理装置と通信し、前記端末を、前記リレーノードのセルに在圏する端末を記憶する記憶部から、削除する、ことを特徴とする付記２９記載の通信制御方法。 (Appendix 30)
When there is no response from the terminal to the paging signal, the relay node communicates with the mobility management device, and deletes the terminal from a storage unit that stores terminals located in the cell of the relay node. The communication control method according to supplementary note 29, wherein:
(付記３１)
　前記移動体に含まれる複数の前記リレーノードのセルには同一の位置登録エリア情報が割り当てられ、
　複数の前記リレーノードに接続されるセンターユニットにて、
　複数の前記リレーノードのセルにそれぞれ在圏する複数の端末の各々を、前記端末が在圏する前記リレーノードに対応付けて記憶部に記憶し、
　前記センターユニットは、前記移動管理装置からのページング信号を受けると、着信先の端末が在圏する前記リレーノードに前記ページング信号を振り分ける、ことを特徴とする付記２７乃至３０のいずれか一に記載の通信制御方法。 (Appendix 31)
The same location registration area information is assigned to the cells of the plurality of relay nodes included in the mobile body,
In the center unit connected to the plurality of relay nodes,
Each of the plurality of terminals located in the cells of the plurality of relay nodes is stored in the storage unit in association with the relay node where the terminal is located,
31. The appendix 27 to 30, wherein the center unit, when receiving a paging signal from the mobility management device, distributes the paging signal to the relay node in which the destination terminal is located. Communication control method.
(付記３２)
　移動体に設置されたリレーノードを構成するコンピュータに、
　前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する処理を実行させるプログラム。 (Appendix 32)
To the computer that configures the relay node installed in the mobile body,
A program for causing a terminal located in a cell of the relay node to execute a process of notifying at least information of a location registration area provided by the relay node.
(付記３３)
　前記リレーノードのセルへ入った前記端末からの位置登録要求を移動管理装置に送信する処理と、
　前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を、前記端末に通知する処理を、前記コンピュータに実行させる、付記３２に記載のプログラム。 (Appendix 33)
Processing for transmitting a location registration request from the terminal that has entered the cell of the relay node to a mobility management device;
Receiving a response signal to the location registration request from the mobility management device, and adding the location registration area information provided by the relay node to the location registration area information of the relay node included in the response signal, The program according to attachment 32, which causes the computer to execute a process of notifying a terminal.
(付記３４)
　移動体に設置されたリレーノードに無線局を介して接続する移動管理装置を構成するコンピュータに、
　端末から前記リレーノードを介して送信された位置登録要求を受信する処理と、
　前記端末の位置登録エリア情報として、
　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する処理と、を実行させるプログラム。 (Appendix 34)
In a computer constituting a mobility management device connected via a wireless station to a relay node installed in a mobile body,
Processing for receiving a location registration request transmitted from the terminal via the relay node;
As the location registration area information of the terminal,
The location registration area information provided by the relay node in which the terminal is located is associated with the current location registration area of the relay node as movement location registration area information and stored in a storage unit. Program to make.
(付記３５)
　移動体に含まれ、それぞれのセルには同一の位置登録エリア情報が割り当てられた複数のリレーノードに接続され、無線局を介して移動管理装置に接続されるセンターユニットを構成するコンピュータに、
　複数の前記リレーノードのセルにそれぞれ在圏する複数の端末の各々を、前記端末が在圏する前記リレーノードに対応付けて記憶部に記憶する処理と、
　前記移動管理装置からページング信号を受けると、前記記憶部を参照して、着信先の端末が在圏する前記リレーノードに、前記ページング信号を振り分ける処理と、
　を実行させるプログラム。 (Appendix 35)
In a mobile unit, each cell is connected to a plurality of relay nodes to which the same location registration area information is assigned, and a computer that constitutes a center unit connected to a mobility management device via a radio station,
A process of storing each of a plurality of terminals located in a cell of each of the plurality of relay nodes in a storage unit in association with the relay node where the terminal is located,
When receiving a paging signal from the mobility management device, referring to the storage unit, a process of allocating the paging signal to the relay node where the destination terminal is located;
A program that executes
　なお、上記の特許文献１、２、非特許文献１の各開示を、本書に引用をもって繰り込むものとする。本発明の全開示（請求の範囲を含む）の枠内において、さらにその基本的技術思想に基づいて、実施形態ないし実施例の変更・調整が可能である。また、本発明の請求の範囲の枠内において種々の開示要素（各付記の各要素、各実施例の各要素、各図面の各要素等を含む）の多様な組み合わせ乃至選択が可能である。すなわち、本発明は、請求の範囲を含む全開示、技術的思想にしたがって当業者であればなし得るであろう各種変形、修正を含むことは勿論である。 Note that the disclosures of Patent Documents 1 and 2 and Non-Patent Document 1 are incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiments and examples can be changed and adjusted based on the basic technical concept. Various disclosed elements (including elements in each supplementary note, elements in each embodiment, elements in each drawing, and the like) can be combined and selected within the scope of the claims of the present invention. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.
１０　端末
２０、２０－１、２０－２　ＭＲＮ
３０　ＭＭＥ
４０　ドナー基地局
５０　コア網
６０－１、６０－２　車両
７０　センターユニット
２０１　記憶部（端末情報記憶部）
２０２　通信部
２０３　ＴＡＵ処理部
２０４　ＴＡＩ報知部
２０５　ページング処理部
２０６　端末情報管理部
２０７、２０８　アンテナ
３０１　記憶部
３０２　ＴＡＵ受信部
３０３　ＴＡ情報管理部
３０４　ＴＡＵ　ＡＣＣＥＰＴ送信部
３０５、３０６　通信部
７０１　記憶部 10 Terminals 20, 20-1, 20-2 MRN
30 MME
40 Donor base station 50 Core network 60-1, 60-2 Vehicle 70 Center unit 201 Storage unit (terminal information storage unit)
202 Communication unit 203 TAU processing unit 204 TAI notification unit 205 Paging processing unit 206 Terminal information management unit 207, 208 Antenna 301 Storage unit 302 TAU reception unit 303 TA information management unit 304 TAU ACCEPT transmission unit 305, 306 Communication unit 701 Storage unit

Claims (15)

  1. 　移動体に設置されたリレーノードを備えた通信システムであって、
    　前記リレーノードは、
    　前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する、ことを特徴とする通信システム。     A communication system including a relay node installed in a mobile body,
    The relay node is
    A communication system characterized by notifying at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
  2. 　請求項１に記載の通信システムであって、
    　前記リレーノードに無線局を介して接続する移動管理装置をさらに備え、
    　前記リレーノードは、
    　前記リレーノードのセルへ入った前記端末からの位置登録要求を前記移動管理装置に送信し、前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を、前記端末に通知する、ことを特徴とする通信システム。     The communication system according to claim 1,
    A mobility management device connected to the relay node via a wireless station;
    The relay node is
    Transmitting a location registration request from the terminal that has entered the cell of the relay node to the mobility management device, receiving a response signal to the location registration request from the mobility management device, and included in the response signal of the relay node A communication system characterized by notifying the terminal of information obtained by adding the location registration area information provided by the relay node to location registration area information.
  3. 　前記移動管理装置は、
    　前記端末から前記リレーノードを介して送信された位置登録要求を受信すると、
    　前記端末の位置登録エリア情報として、
    　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する、ことを特徴とする請求項２に記載の通信システム。     The mobility management device
    When receiving a location registration request transmitted from the terminal via the relay node,
    As the location registration area information of the terminal,
    The location registration area information provided by the relay node in which the terminal is located is stored in a storage unit as movement location registration area information in association with the current location registration area of the relay node. The communication system according to claim 2.
  4. 　移動体に設置されたリレーノードに無線局を介して接続する移動管理装置であって、
    　端末から前記リレーノードを介して送信された位置登録要求を受信すると、
    　前記端末の位置登録エリア情報として、
    　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する手段を備えた、ことを特徴とする移動管理装置。     A mobility management device that connects to a relay node installed in a mobile body via a radio station,
    When receiving a location registration request transmitted from the terminal via the relay node,
    As the location registration area information of the terminal,
    The location registration area information provided by the relay node in which the terminal is located is provided as means for storing in a storage unit in association with the current location registration area of the relay node as movement location registration area information. A mobility management device characterized by that.
  5. 　新たな位置登録エリアに入った前記リレーノードから位置登録要求を受信すると、
    　前記記憶部に記憶された前記リレーノードの位置登録エリア情報を、前記新たな位置登録エリアで更新し、前記端末の位置登録エリア情報として、前記リレーノードの前記新たな位置登録エリアに前記移動位置登録エリア情報を関連させて前記記憶部に記憶する、ことを特徴とする請求項４に記載の移動管理装置。     When a location registration request is received from the relay node that has entered a new location registration area,
    The location registration area information of the relay node stored in the storage unit is updated in the new location registration area, and the moving location is added to the new location registration area of the relay node as location registration area information of the terminal. The mobility management apparatus according to claim 4, wherein registration area information is associated and stored in the storage unit.
  6. 　前記端末への着信が到来すると、前記記憶部を参照して前記端末の位置登録エリア情報を検索し、
    　前記端末の位置登録エリア情報が、前記リレーノードの位置登録エリアに関連付けされた前記移動位置登録エリアの情報を含む場合、
    　前記リレーノードの前記位置登録エリアにページング信号を報知する手段を備え、
    　前記リレーノードは、前記移動管理装置からの前記ページング信号を受けると、前記リレーノードの前記セルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする請求項４又は５に記載の移動管理装置。     When an incoming call arrives at the terminal, the location registration area information of the terminal is searched with reference to the storage unit,
    When the location registration area information of the terminal includes information of the movement location registration area associated with the location registration area of the relay node,
    Means for reporting a paging signal to the location registration area of the relay node;
    The movement according to claim 4 or 5, wherein when the relay node receives the paging signal from the mobility management device, the relay node transmits the paging signal to the cell of the relay node and calls the terminal. Management device.
  7. 　移動体に設置されたリレーノードが、前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する、ことを特徴とする通信制御方法。 A communication control method, wherein a relay node installed in a mobile body notifies at least information of a location registration area provided by the relay node to a terminal located in a cell of the relay node.
  8. 　前記リレーノードは、前記リレーノードのセルへ入った前記端末からの位置登録要求を移動管理装置に送信し、
    　前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を、前記端末に通知する、ことを特徴とする請求項７に記載の通信制御方法。     The relay node transmits a location registration request from the terminal that has entered the cell of the relay node to a mobility management device,
    Receiving a response signal to the location registration request from the mobility management device, and adding the location registration area information provided by the relay node to the location registration area information of the relay node included in the response signal, The communication control method according to claim 7, wherein the communication is notified to a terminal.
  9. 　前記移動管理装置は、
    　前記端末から前記リレーノードを介して送信された位置登録要求を受信すると、
    　前記端末の位置登録エリア情報として、
    　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する、ことを特徴とする請求項８に記載の通信制御方法。     The mobility management device
    When receiving a location registration request transmitted from the terminal via the relay node,
    As the location registration area information of the terminal,
    The location registration area information provided by the relay node in which the terminal is located is stored in a storage unit as movement location registration area information in association with the current location registration area of the relay node. The communication control method according to claim 8.
  10. 　前記移動管理装置は、
    　新たな位置登録エリアに入った前記リレーノードから位置登録要求を受信すると、
    　前記記憶部に記憶された前記リレーノードの位置登録エリア情報を、前記新たな位置登録エリアで更新し、前記端末の位置登録エリア情報として、前記リレーノードの前記新たな位置登録エリアに前記移動位置登録エリア情報を関連させて前記記憶部に記憶する、ことを特徴とする請求項９に記載の通信制御方法。     The mobility management device
    When a location registration request is received from the relay node that has entered a new location registration area,
    The location registration area information of the relay node stored in the storage unit is updated in the new location registration area, and the moving location is added to the new location registration area of the relay node as location registration area information of the terminal. The communication control method according to claim 9, wherein registration area information is associated and stored in the storage unit.
  11. 　前記移動管理装置は、前記端末への着信が到来すると、前記記憶部を参照して前記端末の位置登録エリア情報を検索し、
    　前記端末の位置登録エリア情報が、前記リレーノードの位置登録エリアに関連付けされた前記移動位置登録エリアの情報を含む場合、前記リレーノードの前記位置登録エリアにページング信号を報知し、
    　前記リレーノードは、前記移動管理装置からの前記ページング信号を受けると、前記リレーノードの前記セルにページング信号を送信し、前記端末を呼び出す、ことを特徴とする請求項９又は１０に記載の通信制御方法。     When the mobile management device receives an incoming call to the terminal, the mobile management device searches the location registration area information of the terminal with reference to the storage unit,
    When the location registration area information of the terminal includes information on the movement location registration area associated with the location registration area of the relay node, a paging signal is notified to the location registration area of the relay node,
    The communication according to claim 9 or 10, wherein when the relay node receives the paging signal from the mobility management device, the relay node transmits the paging signal to the cell of the relay node and calls the terminal. Control method.
  12. 　移動体に設置されたリレーノードを構成するコンピュータに、
    　前記リレーノードのセルに在圏する端末に対して、少なくとも前記リレーノードが提供する位置登録エリアの情報を通知する処理を実行させるプログラム。     To the computer that configures the relay node installed in the mobile body,
    A program for causing a terminal located in a cell of the relay node to execute a process of notifying at least information of a location registration area provided by the relay node.
  13. 　前記リレーノードのセルへ入った前記端末からの位置登録要求を移動管理装置に送信する処理と、
    　前記移動管理装置から前記位置登録要求に対する応答信号を受け、前記応答信号に含まれる、前記リレーノードの位置登録エリア情報に、前記リレーノードが提供する前記位置登録エリア情報を加えた情報を前記端末に通知する処理を、前記コンピュータに実行させる、請求項１２に記載のプログラム。     Processing for transmitting a location registration request from the terminal that has entered the cell of the relay node to a mobility management device;
    The terminal receives a response signal to the location registration request from the mobility management device and adds the location registration area information provided by the relay node to the location registration area information of the relay node included in the response signal. The program according to claim 12, which causes the computer to execute a process of notifying the computer.
  14. 　移動体に設置されたリレーノードに無線局を介して接続する移動管理装置を構成するコンピュータに、
    　端末から前記リレーノードを介して送信された位置登録要求を受信する処理と、
    　前記端末の位置登録エリア情報として、
    　前記端末が在圏する前記リレーノードが提供する前記位置登録エリア情報を、移動位置登録エリア情報として、前記リレーノードの現在の位置登録エリアに関連させて、記憶部に記憶する処理と、を実行させるプログラム。     In a computer constituting a mobility management device connected via a wireless station to a relay node installed in a mobile body,
    Processing for receiving a location registration request transmitted from the terminal via the relay node;
    As the location registration area information of the terminal,
    The location registration area information provided by the relay node in which the terminal is located is associated with the current location registration area of the relay node as movement location registration area information and stored in a storage unit. Program to make.
  15. 　移動体に設置されたリレーノードから、少なくとも前記リレーノードが提供する位置登録エリアの情報を受信する、端末。 A terminal that receives at least information of a location registration area provided by the relay node from a relay node installed in the mobile body.
PCT/JP2015/071881 2015-07-31 2015-07-31 Communication system, apparatus, terminal, communication control method, and program WO2017022039A1 (en)

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