JP6161104B2 - Communications system - Google Patents

Description

  The present invention relates to a communication system, a femtocell base station, a gateway device, and a control method.

  With the widespread use of wireless communication devices such as mobile phones and smartphones, the number of emergency calls made to emergency organizations that originate from wireless communication devices is increasing. Since the location of the emergency call source is important for prompt and reliable response by the emergency organization, the location information of the wireless communication device is notified to the emergency organization when the wireless communication device sends an emergency call. It is demanded. For specifying the position of the wireless communication device that has transmitted the emergency call, cell positioning that specifies the position of the wireless communication device based on the position information of the base station that communicates with the wireless communication device that has transmitted the emergency call (Patent Literature 1 ( International Publication No. 2010/074034 pamphlet)), or GPS positioning in which a wireless communication apparatus receives a GPS signal from a GPS (Global Positioning System) satellite and specifies a position based on the received GPS signal. In general, the accuracy of cell positioning is about several hundred meters in radius, and the accuracy of GPS positioning is about several meters in radius. For this reason, it is required to mount a GPS function in a wireless communication apparatus and notify emergency information of more accurate position information.

  In GPS positioning by a wireless communication device, the wireless communication device acquires assist data necessary for GPS positioning such as GPS satellite orbit information and current time information from the communication network, and positioning based on the GPS signal using the assist data. An AGPS (Assisted GPS) system is used.

  In the AGPS method, an SMS (Short Message Service) message indicating that an AGPS server that manages assist data requests GPS positioning in response to an emergency call from the radio communication device is transmitted to the radio communication device that has issued the emergency call. Send to. When receiving the SMS message, the wireless communication device automatically establishes PS (Packet Switching) connection with the communication network, acquires assist data from the AGPS server, and performs GPS positioning. Hereinafter, GPS positioning performed in response to a request from the AGPS server using the SMS message is referred to as GPS positioning by SMS-PUSH opportunity.

  In recent years, it has been found that some smartphones having a GPS function do not support GPS positioning based on the SMS-PUSH opportunity.

  In response to the above-mentioned problems, the existing 3G-Macro network equipped with a base station for a macro cell that constructs a communication area (macro cell) with a radius of several hundred meters to several kilometers supports GPS positioning by SMS-PUSH opportunity. A technique for performing GPS positioning when an emergency call is sent to a wireless communication device that has not been used has been studied. In this technique, when a wireless communication device that does not support GPS positioning triggered by SMS-PUSH issues an emergency call, the AGPS server sends a positioning request of the wireless communication device to an RNC (Radio) that manages a macro cell base station. To Network Controller). The RNC can control the wireless communication device in accordance with a protocol called RRC (Radio Resource Control). Upon receiving a positioning request from the AGPS server, the RNC obtains assist data through communication with the AGPS server and sends an emergency call. The positioning based on the GPS signal using the assist data acquired by the wireless communication apparatus is performed.

International Publication No. 2010/074034 Pamphlet International Publication No. 2010/074033 Pamphlet

  Recently, a communication system including not only a 3G-Macro network but also a 3G-Femto network in which a femtocell base station for constructing a communication area (femtocell) having a radius of several tens of meters has been introduced into an IMS (IP Multimedia Subsystem) network. Is being developed (see Patent Document 2 (WO 2010/074033 pamphlet)). In such a communication system, it is required to construct a 3G-Femto network without changing the existing system configuration as much as possible.

  In the 3G-Femto network, a technique for notifying location information when a wireless communication device transmits an emergency call has not been sufficiently studied. Here, the technology studied in the 3G-Macro network described above is applied to the 3G-Femto network, and the femtocell base station capable of controlling the radio communication device according to RRC acquires assist data through communication with the AGPS server. Then, it is conceivable that the GPS communication is performed using the assist data acquired by the wireless communication device that has transmitted the emergency call. However, since the protocols used in the 3G-Macro network and the 3G-Femto network are generally different, the AGPS server has a function of processing the protocol used in the 3G-Femto network in order to communicate with the femtocell base station. It is necessary to change the existing system configuration such as adding to the AGPS server.

  An object of the present invention is a communication system capable of causing a radio communication device that has made an emergency call to perform GPS positioning in a communication system having a 3G-Femto network while suppressing changes in the existing system configuration. A base station, a gateway device, and a control method are provided.

In order to achieve the above object, the communication system of the present invention provides:
A wireless communication device that performs positioning based on a GPS signal, a server that manages assist data used for positioning based on the GPS signal, and a femtocell that is provided in an IMS network and communicates with the wireless communication device in a communication area A base station,
In the IMS network, a message of a first protocol that can be processed by the femtocell base station and a message of a second protocol that can be processed by the server can be converted into each other, and the femtocell base station When a message is received from one of the station and the server, conversion means for converting the received message into a message of a protocol that can be processed by the other is provided,
When the positioning request of the wireless communication device that has transmitted the emergency call is input in response to the transmission of an emergency call by the wireless communication device, the femtocell base station communicates with the server via the conversion unit. Then, the assist data is acquired, and the wireless communication device that has transmitted the emergency call is caused to perform positioning based on the GPS signal using the acquired assist data.

In order to achieve the above object, the femtocell base station of the present invention comprises:
A femtocell base station provided in an IMS network capable of communicating with a wireless communication device that performs positioning based on a GPS signal,
A message of the first protocol that can be processed by the femtocell base station and a message of the second protocol that can be processed by the server that manages assist data used for positioning based on the GPS signal can be mutually converted. A gateway device provided with the IMS network that receives a message from one of the femtocell base station and the server and converts the received message into a message of a protocol that can be processed by the other; A communication unit for communication;
In response to the transmission of an emergency call by the wireless communication device, when a positioning request of the wireless communication device that has transmitted the emergency call is input, the assist data is acquired by communication with the server via the gateway device, A control unit that causes the wireless communication device that has transmitted the emergency call to perform positioning based on the GPS signal using the acquired assist data.

In order to achieve the above object, the gateway device of the present invention provides:
A gateway device provided in the IMS network for transferring messages,
A first communication unit that communicates with a femtocell base station provided in the IMS network, capable of communicating with a wireless communication device that performs positioning based on a GPS signal;
A second communication unit that communicates with a server that manages assist data used for positioning based on the GPS signal;
A message of a first protocol that can be processed by the base station for femtocell and a message of a second protocol that can be processed by the server can be mutually converted, and the first communication unit and the second protocol When one of the communication units receives a message, the conversion unit converts the received message into a message of a protocol that can be processed by the communication destination of the other communication unit and transmits the message to the other communication unit.

In order to achieve the above object, a method for controlling a femtocell base station of the present invention includes:
A method for controlling a femtocell base station provided in an IMS network capable of communicating with a wireless communication device that performs positioning based on a GPS signal,
When a positioning request of the wireless communication device that has transmitted the emergency call is input in response to the emergency call transmitted by the wireless communication device, the first protocol message that can be processed by the femtocell base station, and The server that manages the assist data used for positioning based on the GPS signal can mutually convert the message of the second protocol that can be processed, and when a message is received from one of the base station for the femtocell and the server, The received message is converted into a message of a protocol that can be processed by the other and transferred, and the assist data is acquired by communication with the server via the gateway device provided with the IMS network,
The wireless communication device that has made the emergency call is caused to perform positioning based on the GPS signal using the acquired assist data.

In order to achieve the above object, the gateway device control method of the present invention provides:
It is possible to communicate with a femtocell base station provided in the IMS network that can communicate with a wireless communication device that performs positioning based on GPS signals, and a server that manages assist data used for positioning based on the GPS signals. , A gateway device control method provided in the IMS network,
When a message is received from one of the femtocell base station and the server, the received message is converted into a message of a protocol that can be processed by the other and transferred.

  According to the present invention, in a communication system having a 3G-Femto network, it is possible to cause a wireless communication device that has made an emergency call to perform GPS positioning while suppressing changes in the existing system configuration.

It is a figure which shows the principal part structure of the communication system of one Embodiment of this invention. It is a block diagram which shows the principal part structure of FAP shown in FIG. It is a block diagram which shows the principal part structure of PCAPGW shown in FIG. It is a block diagram which shows the principal part structure of AGPS shown in FIG. It is a sequence diagram which shows operation | movement of the communication system shown in FIG. It is a sequence diagram which shows operation | movement of the communication system shown in FIG. It is a figure which shows schematic structure of a SIP message. It is a figure which shows schematic structure of a SCCP-DT1 message. It is a figure which shows schematic structure of a SCCP-DT1 message. It is a figure which shows schematic structure of a SIP message. It is a sequence diagram which shows operation | movement of the communication system shown in FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings.

  FIG. 1 is a diagram showing a main configuration of a communication system 100 according to an embodiment of the present invention.

  The communication system 100 includes a UE (User Equipment) 110, a GMLC (Gateway Mobile Location Center) 120, an AGPS 130, a 3G-Macro network 140, and a 3G-Femto network 150.

  The UE 110 is a wireless communication device that can be connected to the 3G-Macro network 140 and the 3G-Femto network 150. Further, the UE 110 includes a GPS function that receives a GPS signal from a GPS satellite (not shown in FIG. 1) and performs positioning (GPS positioning) based on the received GPS signal.

  The GMLC 120 is a server that notifies the emergency organization 200 of the location information of the UE 110 that has sent the emergency call.

  The AGPS 130 is a server that manages assist data for the UE 110 to perform GPS positioning. In addition, when a positioning request of a UE 110 that has issued an emergency call is input from the GMLC 120, the AGPS 130 causes the UE 110 to perform GPS positioning using assist data.

  The 3G-Macro network 140 is an existing 3G network. The 3G-Macro network 140 includes an NB (Node-B) 101, an RNC 142, an MSC (Mobile Switching Center) 143, an HLR (Home Location Register) 144, and an SGW (Serving Gateway) 145. In FIG. 1, one node is shown for simplification of the drawing, but a plurality of nodes are usually provided.

  The NB 141 is a macro cell base station that constructs a communication area (macro cell) with a radius of several hundred meters to several kilometers, and communicates with the UE 110 in the communication area.

  The RNC 142 controls the plurality of NBs 141 to perform outgoing / incoming call control, call termination control, handover control, and the like. Further, the RNC 142 acquires assist data through communication with the AGPS 130 when the UE 110 that has made an emergency call does not support GPS positioning triggered by SMS-PUSH (GPS positioning triggered by SMS-PUSH is not possible). Then, the UE 110 that has made an emergency call using the acquired assist data is caused to perform GPS positioning using the assist data. In this case, communication is performed between the RNC 142 and the AGPS 130 in accordance with a protocol called PCAP (Positioning Calculation Application Part).

  The MSC 143 is an exchange that performs call connection control, service control, and the like.

  The HLR 144 manages subscriber information such as a mobile phone number and terminal identification information of the UE 110.

  The SGW 145 outputs a message input from the AGPS 130 to the 3G-Macro network 140 or the 3G-Femto network 150 according to the communication network to which the UE 110 is connected.

  Since the NB 141, the RNC 142, the MSC 143, the HLR 144, and the SGW 145 are devices that perform processing compliant with 3GPP, descriptions of specific configurations and operations of these devices are omitted. The technology used for the 3G-Macro network 140 is disclosed in, for example, 3GPP TS 23.060.

  The 3G-Femto network 150 is a communication network in which a femtocell base station is introduced into an IMS network. The 3G-Femto network 150 includes a FAP (Femto Access Point) 151, a PDG (Packet Data Gateway) 152, an AAA (Authentication Authorization Accounting) 153, and a P-CSCF (Proxy-Call Session 15). CSCF (Serving-CSCF) 155, HSS (Home Subscriber Server) 156, IPSMGW (IP Short Message Gateway) 157, MGCF / MGW (Media Gateway Control), MGCF / MGW (Media Gateway Control) (Calculation Application Part Gateway) 159. In FIG. 1, only one node is illustrated for simplification of the drawing, but a plurality of nodes are usually provided.

  The FAP 151 is a femto cell base station that constructs a communication area (femto cell) with a radius of about several tens of meters that is narrower than the macro cell, and communicates with the UE 110 in the communication area.

  The PDG 152 relays a message between the FAP 151 and the core side.

  The AAA 153 performs authentication of the UE 110 and the like.

  The P-CSCF 154 and the S-CSCF 155 perform processing such as session control, management, authentication, and routing using SIP (Session Initiation Protocol), which is a protocol used in the 3G-Femto network 150. The P-CSCF 154 performs security control and the like with the UE 110. The S-CSCF 155 performs control of services provided to the UE 110 and the like.

  The HSS 156 acquires the subscriber information of the UE 110 from the HLR 144 and manages it.

  The IPSMGW 157 performs SMS message delivery control and the like.

  The MGCF / MGW 158 connects the 3G-Femto network 150 and the existing telephone network.

  The PCAPGW 159 is an example of a conversion unit. The PCAPGW 159 can communicate with the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152, and can communicate with the AGPS 130. The PCAPGW 159 can mutually convert a SIP message (SIP message) that is the first protocol that can be processed by the FAP 151 and a PCAP message (PCAP message) that is the second protocol that can be processed by the AGPS 130. When a message is received from one of FAP 151 and AGPS 130, the message is converted into a message of a protocol that can be processed by the other and transferred.

  Next, the configuration of the FAP 151, the PCAPGW 159, and the AGPS 130 will be described. In addition, about the other node shown in FIG. 1, since the structure is well known to those skilled in the art, description is abbreviate | omitted.

  First, the configuration of the FAP 151 will be described.

  FIG. 2 is a block diagram showing a main configuration of the FAP 151. As shown in FIG.

  The FAP 151 includes a communication unit 201 and a control unit 202.

  The communication unit 201 communicates with the PCAPGW 159 via the PDG 152, the P-CSCF 154, and the S-CSCF 155. As described above, since the PCAPGW 159 performs message transfer processing between the FAP 151 and the AGPS 130, the communication unit 201 can communicate with the AGPS 130 via the PCAPGW 159.

  When the GPS positioning request of the UE 110 that has sent the emergency call is input, the control unit 202 causes the communication unit 201 to communicate with the AGPS 130 via the PCAPGW 159 to obtain assist data, and to the UE 110 that has sent the emergency call. GPS positioning is performed using the acquired assist data.

  Next, the configuration of PCAPGW159 will be described.

  FIG. 3 is a block diagram showing a main configuration of the PCAPGW 159. As shown in FIG.

  The PCAPGW 159 includes a SIP interface unit 301, a PCAP interface unit 302, and a conversion unit 303. The SIP interface unit 301 is an example of a first communication unit, and the PCAP interface unit 302 is an example of a second communication unit.

  The SIP interface unit 301 communicates with the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152. When receiving the SIP message from the FAP 151, the SIP interface unit 301 outputs the SIP message to the conversion unit 303. In addition, when the SIP message is output from the conversion unit 303, the SIP interface unit 301 transmits the SIP message to the FAP 151.

  The PCAP interface unit 302 communicates with the AGPS 130. When receiving the PCAP message from the AGPS 130, the PCAP interface unit 302 outputs the PCAP message to the conversion unit 303. Further, when the PCAP message is output from the conversion unit 303, the PCAP interface unit 302 transmits the PCAP message to the AGPS 130.

  When a SIP message is input from the SIP interface unit 301, the conversion unit 303 converts the SIP message into a PCAP message and outputs the PCAP message to the PCAP interface unit 302. Further, when a PCAP message is input from the PCAP interface unit 302, the conversion unit 303 converts the PCAP message into a SIP message and outputs the SIP message to the SIP interface unit 301.

  Next, the configuration of the AGPS 130 will be described.

  FIG. 4 is a block diagram showing a main configuration of the AGPS 130. As shown in FIG.

  The AGPS 130 includes a communication unit 401 and a control unit 402.

  The communication unit 401 communicates with the SGW 145 and the PCAPGW 159. As described above, since the PCAPGW 159 performs a message transfer process between the FAP 151 and the AGPS 130, the communication unit 401 can communicate with the FAP 151 via the PCAPGW 159.

  When the positioning request of the UE 110 that has transmitted the emergency call is input from the GMLC 120, the control unit 402 causes the UE 110 to perform GPS positioning using assist data. Here, the control unit 402 determines whether or not the UE 110 that has sent the emergency call is compatible with GPS positioning triggered by SMS-PUSH. Here, based on the identifier indicating the type of the UE 110 included in the message transmitted from the UE 110 when the communication with the communication network is established, the control unit 402 corresponds to the GPS positioning of the SMS-PUSH opportunity. Determine whether or not.

  When the UE 110 that has sent the emergency call is compatible with GPS triggered by SMS-PUSH, the control unit 402 transmits an SMS message indicating that the GPS positioning of the UE 110 is requested to the UE 110 that has sent the emergency call. To do.

  On the other hand, when the UE 110 that has made an emergency call is not compatible with the GPS triggered by SMS-PUSH, the control unit 402 sends a GPS positioning request (MAP-PSL (MAP-Provision Subscriber Location (High Priority)) to the communication unit 401. )) Is transmitted to the SGW 145. Here, the GPS positioning request includes an MSC Number for identifying the MSC 143 or the IPSMGW 157. The GPS positioning request transmitted to the SGW 145 is included in the GPS positioning request. Depending on the MSC Number, it is transferred to the MSC 143 or the IPSMGW 157. Therefore, from the viewpoint of the control unit 402 (AGPS 130), the UE 110 that has made an emergency call is connected to the 3G-Macro network 140 or 3 Regardless of the connection to the G-Femto network 150, a GPS positioning request may be transmitted to the SGW 145.

  Next, the operation of the communication system 100 of this embodiment will be described. The present invention mainly relates to how the UE 110 performs GPS positioning when an emergency call is made while the UE 110 is connected to the 3G-Femto network 150. Description of the operation when an emergency call is made while connected to the 3G-Macro network 140 is omitted.

  5A and 5B are sequence diagrams illustrating an operation when the UE 110 makes an emergency call after the location registration of the UE 110 to the 3G-Femto network 150. FIG. 5B is a sequence diagram following FIG. 5A.

  Referring to FIG. 5A, when the UE 110 moves into the communication area established by the FAP 151, the UE 110 starts location registration. It is assumed that location registration to the 3G-Macro network 140 has been completed.

  UE110 transmits a location registration request | requirement (Location Update Request) to FAP151 (step A1).

  When the FAP 151 receives the location registration request from the UE 110, the FAP 151 transmits an authentication request for the UE 110 to the PDG 152. This authentication request is transmitted to the HLR 144 via the PDG 152, AAA 153, and HSS 156 (step A2).

  When the HLR 144 receives the authentication request of the UE 110, the HLR 144 acquires authentication information corresponding to the UE 110. Specific examples of the authentication information include RAND / AUTH / CK / IK / XRES. RAND / AUTH / CK / IK / XRES is information conforming to 3GPP. RAND is Random Challenge. AUTH is Authentication Token. CK is Cipher Key. IK is Integrity Key. XRES is an Expected RESponse.

  The HLR 144 transmits an authentication request response including the acquired authentication information to the HSS 156. This authentication request response is transmitted to the FAP 151 via the HSS 156, the AAA 153, and the PDG 152 (step A3).

  When the FAP 151 receives an authentication request response to the authentication request, the FAP 151 transmits an authentication result including RAND / AUTH among the authentication information included in the authentication request response to the UE 110 (step A4).

  When the UE 110 receives the authentication result from the FAP 151, the UE 110 performs an authentication calculation by a method based on 3GPP based on RAND / AUTH included in the authentication result, and transmits an authentication result response including the calculation result to the FAP 151 (step A5). ).

  The result of the authentication calculation by the UE 110 is transmitted to the AAA 153 via the FAP 151 and the PDG 152. The AAA 153 authenticates the UE 110 by a method based on 3GPP based on the result of the authentication calculation. When the AAA 153 successfully authenticates the UE 110, the AAA 153 transmits a message indicating that to the FAP 151 via the PDG 152. Note that, in FIG. 5A, description of messages transmitted and received regarding authentication of UE 110 by AAA 153 is omitted.

  When the FAP 151 receives a message indicating that the UE 110 has been successfully authenticated from the AAA 153, the FAP 151 transmits a location registration request for the UE 110 to the PDG 152. This location registration request is transmitted to the HLR 144 via the PDG 152, the P-CSCF 154, the S-CSCF 155, and the HSS 156 (step A6).

  When the HLR 144 receives the location registration request of the UE 110, the HLR 144 transmits a location registration response including the subscriber information of the UE 110 to the HSS 156. This location registration response is transmitted to the FAP 151 via the HSS 156, the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A7). The HSS 156 acquires the subscriber information of the UE 110 included in the location registration response, and registers it in a VLR (Visitor Location Register) not shown in FIG.

  When the FAP 151 receives the location registration response to the location registration request, the FAP 151 transmits the location registration response to the UE 110 (step A8).

  The location registration of the UE 110 is completed by the processing from Step A1 to Step A8 described above.

  Next, when inputting that an emergency call is to be transmitted, the UE 110 transmits an emergency call transmission request (Emergency Setup) to the FAP 151 (step A9).

  When the FAP 151 receives the emergency call transmission request from the UE 110, the FAP 151 transmits a call request (SIP: INVITE) to the PDG 152. This call request is transmitted to MGCF / MGW 158 via PDG 152, P-CSCF 154, and S-CSCF 155 (step A10).

  When the MGCF / MGW 158 receives the call request, the MGCF / MGW 158 sets a call to the emergency organization (step A11). The call request includes the destination telephone number, and the MGCF / MGW 158 can determine the destination based on the telephone number included in the call request. When the call setup to the emergency organization is performed, the MGCF / MGW 158 transmits an emergency call transmission response to the S-CSCF 155. This emergency call transmission response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A12).

  FAP151 will transmit an emergency call transmission response to UE110, if an emergency call transmission response is received (step A13).

  When the S-CSCF 155 receives an emergency call origination response from the MGCF / MGW 158, the simple location information notification (TCP (GEO)) including simple location information roughly indicating the location of the UE 110 that originated the emergency call is obtained by cell positioning. Is transmitted to the HSS 156 (step A14).

  When receiving the simple location information notification from the S-CSCF 155, the HSS 156 transmits a simple location information notification (MAP-SLR (Subscriber Location Report)) to the GMLC 120 (Step A15). This simple position information notification includes the simple position information included in the simple position information notification received from the S-CSCF 155.

  When receiving the simple location information notification from the HSS 156, the GMLC 120 transmits a reception response (MAP-SLRack) to the simple location information notification to the HSS 156 (step A16). In addition, the GMLC 120 transmits a simple position information notification to the emergency engine 200 (step A17). This simple position information notification includes the simple position information included in the simple position information notification received from the HSS 156.

  Next, GMLC120 transmits the GPS positioning request | requirement of UE110 which transmitted the emergency call to AGPS130 (step A18). The GPS positioning request includes simple position information included in the simple position information notification received from the HSS 156. Based on this simple position information, the AGPS 130 identifies assist data (such as orbit information of GPS satellites that transmit GPS signals that can be received by the UE 110 that sent the emergency call) necessary for GPS positioning by the UE 110 that sent the emergency call. can do.

  When the AGPS 130 receives the GPS positioning request of the UE 110 that has transmitted the emergency call from the GMLC 120, the AGPS 130 determines whether or not the UE 110 can perform the GPS positioning of the SMS-PUSH opportunity. As described above, the AGPS 130 can perform GPS positioning when the UE 110 is SMS-PUSH based on the identifier indicating the type of the UE 110 included in the message transmitted from the UE 110 when communication with the communication network is established. It is determined whether or not. The AGPS 130 holds, for example, a database indicating whether or not the UE is capable of GPS positioning triggered by SMS-PUSH for each type of UE, and an emergency call is transmitted using the database. It is possible to determine whether or not the UE 110 can perform GPS positioning at the SMS-PUSH opportunity. In addition, the database may be managed by a server different from the AGPS 130, and the AGPS 130 may make an inquiry to the server.

  If the UE 110 that has made an emergency call can perform GPS positioning triggered by SMS-PUSH, the AGPS 130 transmits an SMS message indicating that the GPS positioning is requested to the UE 110. When the UE 110 receives the SMS message, the UE 110 establishes a PS connection with the 3G-Femto network 150, acquires assist data from the AGPS 130, and performs GPS positioning. In addition, about the detail of GPS positioning of an SMS-PUSH opportunity, since it is not directly related to this invention, description is abbreviate | omitted. Below, UE110 which transmitted the emergency call shall not be able to perform GPS positioning of an SMS-PUSH opportunity.

  If the UE 110 that sent the emergency call cannot perform GPS positioning triggered by SMS-PUSH, the AGPS 130 sends a routing information transmission request (MAP-SRI for SM (MAP-SEND ROUTING INFO FOR) to the FAP 151 communicating with the UE 110. SM) is transmitted to the HLR 144 via the SGW 145 (step A19).

  Upon receiving the routing information transmission request from the AGPS 130, the HLR 144 transmits a request response including the routing information corresponding to the transmission request to the AGPS 130 (step A20). Here, the HLR 144 includes, in the routing information, the MSC number corresponding to the communication network to which the UE 110 that has issued the emergency call is connected. Specifically, the HLR 144 includes the MSC Number indicating the MSC 143 corresponding to the connection destination of the UE 110 in the routing information when the UE 110 that has made an emergency call connects to the 3G-Macro network 140, and the HLR 144 When the UE 110 that has made an emergency call connects to the 3G-Femto network 150, the MSC Number indicating the IPMSGW 157 corresponding to the connection destination of the UE 110 is included in the routing information.

  Upon receiving the request response from the HLR 144, the AGPS 130 transmits a GPS positioning request (MAP-PSL (High Priority)) to the SGW 145. Here, the AGPS 130 sets the MSC Number included in the routing information received from the HLR 144 in the GPS positioning request. The SGW 145 transfers the GPS positioning request transmitted from the AGPS 130 to the IPSMGW 157 because the MSC Number included in the GPS positioning request indicates the IPSMGW 157 (step A21).

  When receiving the GPS positioning request, the IPSMGW 157 transmits a GPS positioning request (SIP: MESSAGE (Location Report Request)) to the S-CSCF 155. The GPS positioning request is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152. (Step A22).

  Referring to FIG. 5B, when receiving the GPS positioning request, the FAP 151 transmits an acceptance response (SIP: 202) to the GPS positioning request to the PDG 152. This acceptance response is transmitted to IPSMGW 157 via PDG 152, P-CSCF 154, and S-CSCF 155 (step A23). Next, the FAP 151 performs paging and establishes communication with the UE 110 that has made an emergency call. In addition, if FAP151 and UE110 are communicating, establishment of communication with UE110 by paging is unnecessary.

  Next, FAP151 produces | generates the positioning start request | requirement which shows requesting | requiring the start of GPS positioning using assist data according to SIP.

  FIG. 6 is a diagram showing a schematic configuration of a SIP message.

  As shown in FIG. 6, the SIP message is composed of a Request-Line part, a Message-Header part, and a Message-Body part.

  Information indicating the type of message and the like is set in the Request-Line section.

  In the Message-Header section, information such as a message source and destination is set.

  The Message-Body part is the body part of the SIP message.

  In addition, description is abbreviate | omitted about the specific content of the parameter contained in each part.

  The FAP 151 sets, in the Message-Body part of the SIP message, information indicating by the PCAP that the start of GPS positioning using assist data is requested. Specifically, as illustrated in FIG. 6, the FAP 151 includes information (00 09 xx xx...) Indicating that the message-body portion of the positioning start request requests the start of GPS positioning using assist data by the PCAP. xx (PCAP-Position-Initiation-Req)).

  Referring to FIG. 5B again, the FAP 151 determines a positioning start request (SIP: MESSAGE (Body = PCAP: Position) in which information (00 09 xx xx. Xx (PCAP-Position-Initiation-Req)) is set in the Message-Body part. -Activation Req)) to PDG 152. This positioning start request is transmitted to the PCAPGW 159 via the PDG 152, the P-CSCF 154, and the S-CSCF 155 (step A24).

  When receiving the positioning start request, the PCAPGW 159 transmits an acceptance response (SIP: 202) to the positioning start request to the S-CSCF 155. This acceptance response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A25).

  Next, the PCAPGW 159 converts the received positioning start request (SIP: MESSAGE (Body = PCAP: Position-Initiation-Req)) into a PCAP message. Specifically, as shown in FIG. 7, the PCAPGW 159 receives the data of the signal transmission method called SCCP (Signaling Connection Control Part), the data format of which is DT1 (SCCP-DT1), in the DATA part. Information (00 09 xx xx... Xx (PCAP-Position-Initiation-Req)), which is set in the Message-Body part of the positioning start request and indicates that the start of GPS positioning using assist data is requested by PCAP. Set. By doing so, the PCAPGW 159 converts the SIP positioning start request into a PCAP positioning start request (PCAP: Position-Initiation-Req) which is a protocol that can be processed by the AGPS 130. Note that the specific contents of each item included in the SCCP-DT 1 are not directly related to the present invention, and thus the description thereof is omitted.

  The PCAPGW 159 transmits the generated positioning start request (PCAP: Position-Initiation-Req) to the AGPS 130 (step A26).

  When the AGPS 130 receives a positioning start request from the PCAPGW 159, the AGPS 130 includes assist data necessary for GPS positioning by the UE 110 that has made an emergency call, and indicates a positioning processing request (PCAP: Position-) indicating that the GPS positioning processing by the UE 110 is requested. Activation-Req) is generated. Specifically, as shown in FIG. 8, the AGPS 130 uses information (00 0a xx xx.. Xx (PCAP: Position) indicating to the Data part of the SCCP-DT1 message that the GPS positioning process by the UE 110 is requested. -Activation-Req)).

  The AGPS 130 transmits the generated positioning processing request (PCAP: Position-Activation-Req) to the PCAPGW 159 (step A27).

  When receiving a positioning processing request (PCAP: Position-Activation-Req) from the AGPS 130, the PCAPGW 159 converts the positioning processing request into a message according to SIP. Specifically, the PCAPGW 159 receives information (00 0a xx xx.. Xx (PCAP-Activation-Req)) set in the Data part of the positioning processing request (PCAP: Position-Activation-Req) shown in FIG. As shown in FIG. 9, it is set in the Message-Body part of the SIP message. By doing so, the PCAPGW 159 converts the positioning processing request by PCAP into a positioning processing request by SIP (SIP: MESSAGE (Body = PCAP: Position-Activation-Req)).

  Referring to FIG. 5B again, the PCAPGW 159 transmits the generated positioning processing request (SIP: MESSAGE (Body = PCAP: Position-Activation-Req)) to the S-CSCF 155. This positioning processing request is transmitted to the FAP 151 via the S-CSCF 155, P-CSCF 154, and PDG 152 (step A28).

  When the FAP 151 receives the positioning processing request, the FAP 151 transmits an acceptance response (SIP: 202) to the positioning processing request to the PDG 152. This acceptance response is transmitted to PCAPGW 159 via PDG 152, P-CSCF 154, and S-CSCF 155 (step A29).

  Next, the FAP 151 acquires assist data included in the received positioning processing request, causes the UE 110 that has made an emergency call to perform GPS positioning using the acquired assist data, and acquires position information from the UE 110. When the location information is acquired from the UE 110, the FAP 151 generates a request response to the positioning processing request. Here, the FAP 151 sets, in the Message-Body part of the SIP message, information (200 0a xx xx xx .. xx (PCAP-Position-Activation-Resp)) indicating that it is a response to the positioning processing request. A request response (SIP: Message (Body = PCAP: Position-Activation-Resp) is generated.

  The FAP 151 transmits the generated request response (SIP: Message (Body = PCAP: Position-Activation-Resp)) to the PDG 152. This request response is transmitted to the PCAPGW 159 via the PDG 152, the P-CSCF 154, and the S-CSCF 155. (Step A30).

  When receiving the request response to the positioning processing request, the PCAPGW 159 transmits an acceptance response (SIP: 202) to the request response to the S-CSCF 155. This acceptance response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A31).

  Further, the PCAPGW 159 converts the request response (SIP: Message (Body = PCAP: Position-Activation-Resp)) received from the FAP 151 into a PCAP message. Specifically, the PCAPGW 159 includes the Data part of the SCCP-DT1 message, The information set in the Message-Body part of the received request response (200a xx xx xx .. xx (PCAP-Position-Activation-Resp)) is set, whereby the PCAPGW 159 makes a positioning processing request by SIP. Request response (SIP: Message (Body = PCAP: Position-Activation-Resp)) to request response (PCAP To convert to Position-Activation-Resp).

  The PCAPGW 159 transmits the generated request response (PCAP: Position-Activation-Resp) to the AGPS 130 (step A32).

  When receiving a request response to the positioning processing request, the AGPS 130 generates a request response to the positioning start request. Here, the AGPS 130 is a request in which the information (20 09 xx xx... Xx (PCAP: Position-Initiation-Resp)) indicating that it is a response to the positioning start request is set in the Data portion of the SCCP-DT1 message. A response (PCAP: Position-Initiation-Resp) is generated.

  Next, the AGPS 130 transmits the generated request response (PCAP: Position-Initiation-Resp) to the PCAPGW 159 (step A33).

  When receiving a request response (PCAP: Position-Initiation-Resp) from the AGPS 130, the PCAPGW 159 converts the request response into an SIP message. Specifically, the PCAPGW 159 transmits the information (20 09 xx xx... Xx (PCAP: Position-Initiation-Resp)) set in the Data part of the request response to the positioning start request to the Message-Body part of the SIP message. Set. By doing so, the PCAPGW 159 makes a request response to the positioning start request by PCAP (PCAP: Position-Initiation-Resp) as a request response to the positioning start request by SIP (SIP: MESSAGE (Body = PCAP: Position-Initiation-Resp)). Convert to

  The PCAPGW 159 transmits the generated request response (SIP: MESSAGE (Body = PCAP: Position-Initiation-Resp)) to the S-CSCF 155. This request response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A34).

  When the FAP 151 receives a request response to the positioning start request, the FAP 151 transmits an acceptance response to the request response to the PDG 152. This acceptance response is transmitted to the PCAPGW 159 via the PDG 152, the P-CSCF 154, and the S-CSCF 155 (step A35).

  Next, the FAP 151 transmits a GPS positioning response (SIP: MESSAGE (Location-Report-Answer)) including the location information acquired from the UE 110 to the PDG 152. The GPS positioning response includes the PDG 152, the P-CSCF 154, and the S-CSCF 155. To the IPSMGW 157 (step A36).

  Upon receiving the GPS positioning response, IPSMGW 157 transmits an acceptance response (SIP: 202) to S-CSCF 155. This acceptance response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step A37).

  Also, the IPSMGW 157 transmits a GPS positioning response (MAP-PSLack (Location Estimate)) to the AGPS 130 via the SGW 145 (step A38). This GPS positioning response includes position information included in the GPS positioning response received from the S-CSCF 155.

  Upon receiving the GPS positioning response from IPSMGW 157, AGPS 130 transmits the GPS positioning response to GMLC 120 (step A39). This GPS positioning response includes position information included in the GPS positioning response received from IPSMGW 157.

  When receiving the GPS positioning response from the AGPS 130, the GMLC 120 notifies the emergency organization 200 of the position information included in the GPS positioning response (step A40).

  The location information of the UE 110 that has sent the emergency call is notified to the emergency organization 200 by the processing from Step A9 to Step A40 described above.

  In addition, in FIG. 5A and FIG. 5B, after the position registration of UE110 to 3G-Femto network 150, operation | movement when the UE110 originated an emergency call was demonstrated. When an emergency call is sent, the location information of the UE 110 that has forcibly sent the emergency call may be acquired by the GMLC 120 after the emergency call ends. The operation in this case will be described with reference to FIG. In FIG. 10, it is assumed that the location registration of the UE 110 has already been completed and the UE 110 has made an emergency call.

  When it is input that the emergency call is terminated, the UE 110 transmits a call disconnection request (CC: Disconnect) indicating that a call disconnection process is requested to the FAP 151 (step B1).

  When the FAP 151 receives a call disconnection request from the UE 110, the FAP 151 transmits a call disconnection request (SIP: BYE) to the PDG 152. This call disconnect request is transmitted to MGCF / MGW 158 via PDG 152, P-CSCF 154, and S-CSCF 155 (step B2).

  When receiving the call disconnect request, MGCF / MGW 158 releases the call connection with the emergency organization (step B3). Further, the MGCF / MGW 158 transmits a call disconnection response to the call disconnection request to the S-CSCF 155. This call disconnection response is transmitted to the FAP 151 via the S-CSCF 155, the P-CSCF 154, and the PDG 152 (step B4).

  When the FAP 151 receives the call disconnection response, the FAP 151 transmits a call disconnection response for the call disconnection request received from the UE 110 to the UE 110 (step B5).

  When the call connection is released, the emergency organization 200 transmits a location information notification request of the UE 110 that has transmitted the emergency call to the GMLC 120 (step B6).

  When the GMLC 120 receives the location information notification request of the UE 110 from the emergency organization 200, the GMLC 120 transmits a simple location information notification request (MAL-PSL (No Priority)) indicating that the UE 110 is requested to transmit the simple location information to the HSS 156. (Step B7).

  When receiving the simple location information notification request of the UE 110 from the GMLC 120, the HSS 156 transmits a simple location information notification (MAP-PSLack) including the simple location information of the UE 110 to the GMLC 120 (step B8).

  The GMLC 120 transmits a GPS positioning request indicating that the GPS positioning of the UE 110 that has issued the emergency call is requested to the AGPS 130 (step A18). The GPS positioning request includes simple position information included in the simple position information notification received from the HSS 156.

  Thereafter, the processing after Step A18 shown in FIGS. 5A and 5B is performed, and the location information of the UE 110 that has sent the emergency call is notified to the emergency organization 200.

  As described above, the communication system 100 according to the present embodiment mutually converts the first protocol message (SIP message) that can be processed by the FAP 151 and the second protocol message (PCAP message) that can be processed by the AGPS 130. When a message is received from one of the FAP 151 and the AGPS 130, the message is converted into a message of a protocol that can be processed by the other and transferred to the other (PCAPGW 159). When the UE 110 connected to the 3G-Femto network 150 issues an emergency call, the AGPS 130 inputs the GPS positioning request of the UE 110 to the FAP 151, and the FAP 151 acquires assist data through communication with the AGPS 130 via the PCAPGW 159. The GPS positioning is performed using the assist data acquired by the UE 110 that has transmitted the call.

  Therefore, also in the 3G-Femto network 150, the UE 110 that has issued an emergency call can perform GPS positioning. Also, by providing the PCAPGW 159 that can convert the SIP message and the PCAP message to each other, the AGPS 130 has a function to process the SIP, and each component in the 3G-Femto network 150 has a function to process the PCAP. Therefore, it is possible to suppress changes in the existing system configuration. Further, by providing the PCAPGW 159, when viewed from the AGPS 130, the 3G-Femto network 150 can be virtually regarded as one RNC (can be converted into a virtual RNC). Usually, a very large number of FAPs 151 are provided. When the AGPS 130 directly transmits / receives a message to / from each of these FAPs 151, the processing load on the AGPS 130 increases. By providing the PCAPGW 159 and converting the 3G-Femto network 150 into a virtual RNC, the processing load on the AGPS 130 can be reduced as compared with the case where the AGPS 130 directly transmits and receives messages to and from many FAPs 151.

  The above-described embodiment is a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiment alone, and various modifications are made without departing from the gist of the present invention. Implementation is possible.

  In addition, the communication system according to the present embodiment can perform processing without depending on the 3GPP version.

  In addition, the control operation in each device configuring the communication system in the present embodiment described above can be executed using hardware, software, or a composite configuration of both.

  In the case of executing processing using software, it is possible to install and execute a program in which a processing sequence is recorded in a memory in a computer incorporated in dedicated hardware. Alternatively, the program can be installed and executed on a general-purpose computer capable of executing various processes.

  For example, the program can be recorded in advance on a hard disk or a ROM (Read Only Memory) as a recording medium. Alternatively, the program can be stored (recorded) temporarily or permanently in a removable recording medium. Such a removable recording medium can be provided as so-called package software. Examples of the removable recording medium include a floppy (registered trademark) disk, a CD-ROM (Compact Disc Read Only Memory), an MO (Magneto Optical) disk, a DVD (Digital Versatile Disc), a magnetic disk, and a semiconductor memory.

  The program is installed in the computer from the removable recording medium as described above. In addition, it is wirelessly transferred from the download site to the computer. In addition, it is transferred to the computer via a network by wire.

  In addition, the communication system according to the present embodiment not only executes processing in time series according to the processing operation described in the above embodiment, but also the processing capability of the apparatus that executes the processing, or in parallel as necessary. It is also possible to construct to execute processing individually.

  In addition, the communication system according to the present embodiment can be constructed so as to have a logical set configuration of a plurality of devices or a configuration in which devices of each configuration exist in the same casing.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A wireless communication device that performs positioning based on a GPS signal, a server that manages assist data used for positioning based on the GPS signal, and a femtocell that is provided in an IMS network and communicates with the wireless communication device in a communication area A base station,
In the IMS network, a message of a first protocol that can be processed by the femtocell base station and a message of a second protocol that can be processed by the server can be converted into each other, and the femtocell base station When a message is received from one of the station and the server, conversion means for converting the received message into a message of a protocol that can be processed by the other is provided,
When the positioning request of the wireless communication device that has transmitted the emergency call is input in response to the transmission of an emergency call by the wireless communication device, the femtocell base station communicates with the server via the conversion unit. A communication system, wherein the assist data is acquired by using the wireless communication device that has made the emergency call and performs positioning based on the GPS signal using the acquired assist data.

(Appendix 2)
In the communication system according to attachment 1,
The first protocol is SIP;
The communication system, wherein the second protocol is PCAP.

(Appendix 3)
In the communication system according to attachment 2,
The femtocell base station embeds the PCAP message in the SIP message and transmits it to the conversion means.

(Appendix 4)
A femtocell base station provided in an IMS network capable of communicating with a wireless communication device that performs positioning based on a GPS signal,
A message of the first protocol that can be processed by the femtocell base station and a message of the second protocol that can be processed by the server that manages assist data used for positioning based on the GPS signal can be mutually converted. A gateway device provided with the IMS network that receives a message from one of the femtocell base station and the server and converts the received message into a message of a protocol that can be processed by the other; A communication unit for communication;
When the positioning request of the wireless communication device that has transmitted the emergency call is input following the transmission of the emergency call by the wireless communication device, the assist data is acquired by communication with the server via the gateway device, A femtocell base station, comprising: a control unit that causes a wireless communication device that has made an emergency call to perform positioning based on the GPS signal using the acquired assist data.

(Appendix 5)
A femtocell base station according to appendix 4,
The first protocol is SIP;
The femtocell base station, wherein the second protocol is PCAP.

(Appendix 6)
A gateway device provided in the IMS network for transferring messages,
A first communication unit that communicates with a femtocell base station provided in the IMS network, capable of communicating with a wireless communication device that performs positioning based on a GPS signal;
A second communication unit that communicates with a server that manages assist data used for positioning based on the GPS signal;
A message of a first protocol that can be processed by the base station for femtocell and a message of a second protocol that can be processed by the server can be mutually converted, and the first communication unit and the second protocol A conversion unit that, when one of the communication units receives a message, converts the received message into a message of a protocol that can be processed by the communication destination of the other communication unit, and transmits the message to the other communication unit. A gateway device.

(Appendix 7)
In the gateway device according to attachment 6,
The first protocol is SIP;
The gateway apparatus, wherein the second protocol is PCAP.

(Appendix 8)
A method for controlling a femtocell base station provided in an IMS network capable of communicating with a wireless communication device that performs positioning based on a GPS signal,
When a positioning request of the wireless communication device that has transmitted the emergency call is input in response to the emergency call transmitted by the wireless communication device, the first protocol message that can be processed by the femtocell base station, and The server that manages the assist data used for positioning based on the GPS signal can mutually convert the message of the second protocol that can be processed, and when a message is received from one of the base station for the femtocell and the server, The received message is converted into a message of a protocol that can be processed by the other and transferred, and the assist data is acquired by communication with the server via the gateway device provided with the IMS network,
A method for controlling a femtocell base station, comprising: causing a radio communication apparatus that has made an emergency call to perform positioning based on the GPS signal using the acquired assist data.

(Appendix 9)
A method for controlling a femtocell base station according to attachment 8, comprising:
The first protocol is SIP;
The method for controlling a femtocell base station, wherein the second protocol is PCAP.

(Appendix 10)
It is possible to communicate with a femtocell base station provided in the IMS network that can communicate with a wireless communication device that performs positioning based on GPS signals, and a server that manages assist data used for positioning based on the GPS signals. , A gateway device control method provided in the IMS network,
When a message is received from one of the femtocell base station and the server, the received message is converted into a message of a protocol that can be processed by the other and transferred.

(Appendix 11)
In the gateway device control method according to attachment 10,
The first protocol is SIP;
The gateway device control method, wherein the second protocol is PCAP.

100 communication system 110 UE
120 GMLC
130 AGPS
140 3G-Macro network 150 3G-Femto network 200 Emergency organization 141 NB
142 RNC
143 MSC
144 HLR
145 SGW
151 FAP
152 PDG
153 AAA
154 P-CSCF
155 S-CSCF
156 HSS
157 IPSMGW
158 MGCF / MGW
159 PCAPGW
DESCRIPTION OF SYMBOLS 201 Communication part 202 Control part 301 SIP interface part 302 PCAP interface part 303 Conversion part 401 Communication part 402 Control part

Claims (3)

A wireless communication device that performs positioning based on a GPS signal and assist data used for positioning based on the GPS signal are managed, and the assist data is used when a positioning request for a wireless communication device that has made an emergency call is input. A server that causes the wireless communication device to perform positioning, and a femtocell base station that is provided in an IMS network and communicates with the wireless communication device in a communication area,
In the IMS network, a message of a first protocol that can be processed by the femtocell base station and a message of a second protocol that can be processed by the server can be converted into each other, and the femtocell base station When a message is received from one of the station and the server, conversion means for converting the received message into a message of a protocol that can be processed by the other is provided,
When the positioning request of the wireless communication device that cannot perform GPS positioning triggered by SMS-PUSH is input, the femtocell base station acquires the assist data through communication with the server via the conversion unit, and SMS-PUSH opportunity GPS positioning is not allowed to wireless communication device to perform positioning based on the GPS signal using the acquired assist data ,
The server determines whether the wireless communication device that has sent the emergency call is capable of GPS positioning triggered by SMS-PUSH. communication system to the femto cell base station -push GPS positioning opportunity to communicate with the wireless communication device is not possible, it characterized that you send a positioning request for the wireless communication apparatus via the IMS network. The first protocol is SIP;
The second protocol is a PCAP, communication system of claim 1, wherein. The communication system according to claim 2 , wherein the femtocell base station embeds the PCAP message in the SIP message and transmits the message to the conversion unit.

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