WO2008014716A1 - A system for providing the terminal location information and the method thereof - Google Patents

Abstract

A system for providing the terminal location information and the method thereof, the system comprises: at least one user terminal; one or more access networks for accessing the user terminal; a location service control unit for obtaining the location information of the user terminal from the access network and sending the location information to the location service client. The method comprises: the location service control unit connected to the location service client and the access network obtaining the location information of the user terminal from one or more access networks; the location service control unit sending the location information of the user terminal to the locaiton service client. Quering the location information of the user terminal and the service combined with other IMS service can be achieved neatly.

Description

 Instruction terminal location information providing system and method

 [1] Technical field

 [2] The present invention relates to the field of communications, and in particular, to a terminal location information providing system and method.

 [3] Background of the invention

 [4] IMS (IP Multimedia Subsystem) is 3GPP (Third)

 Generation Partnership Projects, 3rd Generation Partnership Project) in Release

 Subsystem proposed in version 5 to support IP multimedia services. The core feature of IMS is the use of SIP (Session Initiated)

 Protocol, starting session protocol) Protocol independence from access. IMS is a multimedia control/call control platform in the PS (packet switching) domain. It supports both session and non-session multimedia services, providing a common service platform for future multimedia applications.

[5] 3GPP TS 22.071 defines LCS (Location

 Service, Location Service) A requirement specification that requires the network to report the location information of a user terminal to a user, mobile terminal, network operator, service provider, or value-added service provider in a standard format.

 [6] The location information of the user terminal can be a direct location information (such as latitude and longitude, city address, cell identifier, network line identifier, area code, etc.); it can also be an index point through which the query can be obtained. Location information of the user terminal.

[7] The location service system functionally includes three functional modules, LCS client, LCS

 Server (server) and target user terminal.

[8] The LCS client is the client of the location service, which sends a location request to the LCS Server and from the LCS

The Server receives the location response and the location information of the target user terminal.

[9] LCS Server is a server for location services, it receives from LCS

 The location request of the client, and the location process of the target user terminal is initiated, the location information of the target user terminal is obtained, and then, to the LCS

The client sends the location response and the obtained location information of the target user terminal. The above location request, The position response and subsequent position information may be collectively referred to as a position command.

 [10] The target user terminal is an object used for positioning, which can participate in the positioning process of the user terminal, and realize the positioning of the user terminal together with the network; or can participate in the positioning process, and the positioning of the user terminal is completed by the network.

 [11] Common location services include:

 [12] 1. Public security services, for example, emergency services, providing location information of the calling user terminal;

[13] 2. Listening services, for example, location-based monitoring services;

[14] 3. Location-based billing services;

 [15] 4. Tracking business, for example, fleet and asset tracking, traffic monitoring;

 [16] 5, enhanced call routing, for example, routing to the nearest business client, such as roadside help;

 [17] 6. Location-based information services, such as navigation, city tours, location-based content broadcasting, mobile yellow pages, location-sensing Internet services;

[18] 7. Network enhanced services, such as network planning, network service quality improvement, and wireless resource management improvement

[19] Each of the above locations requires the network to be able to LCS

 The client reports the location information. Therefore, in order for the IMS network to support the location service, the IMS network needs to report the location information to the LCS client.

[20] In addition to 3GPP, other standards organizations such as TISPAN (telecommunications and Internet converged services and protocols for advanced

 Networking, telecommunications and Internet convergence services and advanced network protocols) are also researching location services. The requirements for next-generation networks defined by TISPAN include the need to provide location services to user terminals that pass fixed access.

 [21] The LCS system architecture in the IMS network defined by 3GPP TS 23.271 LCS is shown in Figure 1. UE (User Equipment, User Equipment) via GPRS (General Packet Radio

 Service, General Data Radio Service) Network access to the mobile network, the GPRS network can be GERAN (GSM Radio Access Network, GSM Edge Access Network) or UTRAN (Universal Terrestril Radio Access)

Network, Universal Terrestrial Radio Access Network). When the mobile network is 2G (Second Generation, second generation mobile communication) Network吋, UE access to 2G-MSC (2G Mobile)

 Switching Centre, 2G Mobile Service Switching Center) or 2G-SGSN (2G Serving GPRS Supporting Node, 2G Service GPRS Access Point), when the mobile network is 3G (Third)

Generation, third-generation mobile communication) Network吋, UE access to 3G-SGSN (3G service GPRS access)

Server, Mobile Service Switching Server), 2G-MSC, 2G-SGSN, 3G-SGSN, MSC

Centre, visit gateway mobile location control unit), VGMLC is connected to HGMLC via Lr interface (H

 Centre, the home gateway mobile location control unit), the HGMLC is connected to the RMGLC (Req uest Gateway Mobile Location Centre) through the Lr interface, and the external LCS Client is connected to the RGGLC through the Le interface to obtain the user terminal. location information.

 [22] HGMLC and RGMLC are connected to HSS via the Lh interface (Home Subscriber

 Server, home subscriber server) /HLR (Home Location

 Register, home location register), via HSS/

 The HLR query obtains the user's subscription data and routing information. When the UE is located in the IMS network, the location service function is implemented by the LIMS-I WF (IMS interface function module), and the LIMS-IWF includes the RLIMS-IWF (Request IMS Interface Function Module) and the HLIMS-IWF (Home IMS Interface Function Module), RLIMS -IWF is used to implement the routing function of the location request. The HLIMS-IWF is used to implement the conversion of the IMS user identity to the mobile network user identity.

 [23] For IMS users, the function of location information query is implemented by the LIMS-IWF function module, LIMS-IWF includes two sub-function modules, and the RLIMS-IWF (Request Domain LIMS-IWF) sub-module is used according to the user's IMS. The public subscriber identity requests the LCS service to the user's home domain, and the HLIMS-IWF (Home Domain LI MS-IWF) obtains the MSISDN (Mobile Station Number) associated with the IMS public subscriber identity from the HSS. The general positioning process is shown in Figure 2, including the following processing steps:

S202, the LCS client queries the location information of the user terminal, LCS The client can query the location information of the user terminal according to the public user identifier of the user terminal, and the LCS client queries the R-GMLC through the Le interface to send a location service request to the R-GMLC.

[25] S204, R-GMLC through pre-configuration or DNS (domin Name

 Server, domain name server) configuration point method, select a request domain LIMS-IWF, use the Lr interface to forward the above location service request to the request domain LIMS-IWF;

[26] S206, the request domain LIMS-IWF determines the LIMS-IWF address of the home domain, and uses the Lr interface to forward the location service request to the home domain LIMS-IWF through the pre-configuration or DNS configuration method;

[27] S208, the home domain LIMS-IWF queries the SLF to obtain the HSS address through the Dh interface; (step S206, S20)

8 optional)

 [28] S210, the SLF returns the HSS address to the home domain LIMS-IWF through the Dh interface;

 [29] S212, the home domain LIMS-IWF queries the MSISDN of the HSS user through the PULL request of the Sh (including the IMS user identity SIP-URI);

[30] S214, the home domain LIMS-IWF obtains the user's MSISDN from the HSS through the PULL request of Sh;

[31] S216, the home domain LIMS-IWF queries the HLR to query the address of the H-GMLC (Home Gateway Mobile Location Control Unit) through the MAP message;

[32] S218, the home domain LIMS-IWF obtains the address of the H-GMLC from the HLR;

[33] S220, the home domain LIMS-IWF forwards the location service request to the H-GMLC through the Lr interface;

[34] S222, H-GMLC for policy control;

 [35] S224, the H-GMLC queries the HLR to query the address of the V-GMLC through the MAP message;

 [36] S226, the H-GMLC obtains the address of the V-GMLC from the HLR;

 [37] S228, the H-GMLC forwards the location service request to the V-GMLC;

 [38] S230, V-GMLC initiates a positioning process;

 [39] S232-S242, V-GMLC forwards the position response to the LCS client.

 [40] In the process of implementing the present invention, the inventors have found that the above prior art solution only considers the case where the user terminal accesses the IMS through the GPRS network, and when the user accesses the IMS network through other access methods, such as by TISPAN. Defined NASS (Natwork Attachment

Subsystem, network attachment subsystem) After accessing the IMS network, the location service of the IMS user cannot be implemented. [41] The foregoing prior art solution only implements the method for obtaining location information by using the IMS identifier, and does not consider the service authority control for the I MS user identifier, and cannot implement the service of combining the location service with other IMS services (such as the presence service).

 [42] The above prior art solution requires the RLIMS-IWF (Requesting Domain LIMS-IWF) to request the LCS service to the user's home domain according to the user's IMS public user identity, but how the RLIMS-IWF implements this function remains to be studied.

 [43] In the above prior art solution, the User Policy Control Unit (H-GMLC) obtains the address of the (V-GMLC) of the user terminal location information providing unit through the Lh interface to the HSS query according to the M SISDN of the user terminal. The process is not applicable to the IMS network; in the IMS network, how the user policy control unit routes the location service request to the location information providing unit remains to be studied.

 [44] Summary of the invention

 [45] The present invention provides a terminal location information providing system and method, which enables flexible acquisition of terminal location information.

[46] A terminal location information providing system, the system comprising:

[47] at least one user terminal;

 [48] one or more access networks, configured to access the user terminal;

[49] Location Service Control Unit

 And acquiring location information of the user terminal from the access network, and sending the location information to a location service client.

[50] A terminal location information providing method, the method comprising:

[51] Location Service Control Unit connected to the location service client and the access network

 Obtaining location information of the user terminal from one or more access networks;

[52] The location service control unit sends the location information of the user terminal to the location service client.

[53] A location command routing system, comprising a sender and a receiver, the system further comprising a location service routing unit, the location command routing system routing the location command from the sender in at least one of the following three manners To the recipient:

[54] the sender directly sends the location command to the receiver;

[55] The sender sends a location command to the location service routing unit, the location service routing unit Routing the location command to the recipient; and

 [56] The sender sends a location command to the location service routing unit, where the location service routing unit sends the location information of the receiver to the sender, and the sender according to the location information The location command is sent to the recipient.

 [57] With the present invention, it is possible to flexibly perform acquisition of location information of a user terminal, and can be combined with other services.

 [58] BRIEF DESCRIPTION OF THE DRAWINGS

 BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in the claims In the drawing,

 1 is a schematic diagram of a location service system architecture in an IMS network according to the prior art;

 2 is a schematic diagram of a user terminal location location process according to the prior art;

 Figure 3 is a block diagram of a terminal location information providing system in accordance with the present invention;

 4 is a flowchart of a terminal location information providing method according to the present invention;

 5 is a schematic diagram of a general terminal location information providing method according to an embodiment of the present invention;

 6 is a schematic diagram of a terminal location information providing method in an emergency service according to an embodiment of the present invention;

 7 is a block diagram of a location command routing system in accordance with the present invention.

 [67] Mode for carrying out the invention

 The invention will be described in detail below with reference to the accompanying drawings.

 The present invention will provide a complete method of providing location information to LCS clients in a packet telecommunications network that uses SIP as the core network call control signaling.

3 is a block diagram showing the structure of a terminal location information providing system according to the present invention. As shown in FIG. 3, the terminal location providing system of the present invention includes:

[71] a location service client 302 (LCS client), configured to receive location information of the user terminal from the location service control unit 304;

 [72] The location service control unit 304 is configured to acquire location information of the user terminal from one or more access networks and send the location information to the location service client 302;

[73] one or more access networks 308 for implementing access by user terminals; and one or more user terminals 3 10;

 [74] Call session control function unit 306, and location service control unit 304 and one or more access networks

, used to implement registration and access control of the user terminal;

[75] The subscriber subscription data unit 312 is coupled to the location service control unit 304 and the call session control function unit 306 for storing subscription data of the user terminal.

[76] The location service control unit 304 obtains the location information of the user terminal from the access network in at least one of the following situations, and sends the location information to the location service client 302:

[77] The location service client 302 sends a location information request to the location service control unit 304; the location service control unit 304 periodically transmits the location information of the user terminal to the location service client 302; and the location information of the location service control unit ₃₀₄ at the user terminal. The location information of the user terminal is transmitted to the location service client 302 in the event of a change.

[78] The location service control unit 304 described above includes: a location information providing unit 304-6, configured to collect location information for locating a location of the user terminal from one or more access networks, and send the location information to the location service Client ₃₀₂ .

 [79] In the case that the client policy control and the user policy control are required, the location service control unit 304 further includes: a client policy control unit 304-2, configured to control the location command of the location service client 302. And sending the location command to the user policy control unit; the user policy control unit 304-4, configured to perform policy control of the location information query of the user, and send the location information to the location service client 302 or the client policy control unit .

 The location service control unit 304 further includes: a location service routing unit 304-8, connected to the client policy control unit, the user policy control unit, and the location information providing unit, for routing the location request message.

 [81] The call session control function unit 306 includes: a user registration control unit 310-2, configured to complete a registration function of the user terminal, and provide an address of the location information providing unit to the user registration control unit; and user access control The unit 310-4 is connected to the user registration control unit and one or more access networks, and is configured to complete access control of the user terminal, and send information from the user terminal to the IP multimedia network.

[82] The location service client 302 is a client of the location service, which sends the location to the client policy control unit. Requesting, receiving location response or location information from the client policy control unit, the LCS client may also send a location request and/or receive location response or location information to the user policy control unit or the location information providing unit, the interface being the same as the LCS client Interface between client policy control units. The LCS client may be located inside the IMS network, such as an IMS user terminal, providing a charging information collection point based on the location charging function, or may be external to the IMS network, such as a PSAP (Public Service Access Point) providing emergency services. Business location point for commercial location business.

[83] The client policy control unit receives the location request from the LCS client and sends a location response or location information to the LCS client, for the LCS

 Client access policy control; client policy control unit and LCS

 The interface between the clients is an L1 interface, and the interface protocol can be an MLP protocol. The client policy control unit is usually located in the LCS client subscription domain. For example, when the LCS client is an IMS user terminal, the client policy control unit is located in the home domain of the LCS client. The client policy control unit can route the location request of the LCS client to the user policy control unit, and the interface is an internal interface or an L2 interface, using the R LP protocol, or the LCS.

 The location request of the client is routed to the location information providing unit, and the interface is an internal interface or an L20 interface (omitted in FIG. 3), and the RLP protocol is used.

 [84] The user policy control unit receives a location request from the LCS client or the client policy control unit, sends a location response or location information to the LCS client or the client policy control unit, and uses the location attribute of the user according to the subscription attribute of the user. Positioning for policy control, such as limiting the provision of location information. The user policy control unit is usually located in the home domain of the located user. The user policy control unit obtains the subscription data of the user from the user subscription data unit 312, and the interface is an internal interface or an L5 interface, and the interface protocol may be a MAP or Diameter protocol. The user policy control unit routes the location request to the location information providing unit, and the interface is an internal interface or an L3 interface, and the RLP protocol is used.

 [85] The location information providing unit receives a location request from an LCS client or a client policy control unit or a user policy control unit, collects location information of the located user terminal from each different access network, and sends a location response or location information to the LCS.

Client or client policy control unit or user policy control unit. The location information providing unit is usually located in the visited domain of the located user; the GPRS access user is obtained by the RLP protocol to the V-GMLC query. Set the information. The location information providing unit may also be located in the home domain of the located user, such as integrated in the user policy control unit. In this way, the user policy control unit may obtain the location information of the user directly from the access network.

 [86] The location information providing unit obtains the location information of the user terminal from the access network, and the interface is an L4 interface, and the access network may be various access networks such as GPRS, ADSL, WLAN, LAN, etc., for different access networks, The L4 interface can use different access protocols, such as the RLP protocol and the Diameter protocol. The location information providing unit can be implemented on the function of the existing V-GMLC. To this end, the V-GMLC needs to obtain the location information of the user terminal through the L4 interface to a network other than GPRS such as ADSL, WLAN, LAN, and the like.

 [87] The user terminal can access the IMS network through various access networks, and the interface is an L9 interface. The user terminal can be a fixed terminal or a mobile terminal. When the user terminal is a fixed terminal, it can be an IP terminal directly. Accessing the packet network may also be that the legacy circuit terminal accesses the packet network through the access gateway.

 [88] The user access control unit completes the access control function of the user, and receives the session signaling from the user terminal, and sends the session signaling to the IMS network; the interface between the user access control unit and the user terminal is an L21 interface (not shown). When the user terminal accesses through the SIP protocol, the interface protocol is SIP. When the user terminal accesses the traditional circuit terminal through the access gateway, the interface protocol is SIP, H248 or other media control protocol. The user access control unit controls the access network through the L8 interface, and the interface protocol is the Diameter protocol. In the IMS architecture defined by 3GPP and TISPAN, the user access control unit is P-CSCF or AGCF.

[89] The user registration control unit completes the registration function of the user terminal, and the interface between the user and the access control unit is an internal interface or an L7 interface, and the SIP protocol is used. The user registration control unit obtains the subscription data of the IMS user from the user subscription data unit 312, and the interface is an internal interface or an L6 interface, and the Diameter protocol is used.

[90] The user subscription data unit 312 holds the subscriber's subscription data, including the subscription data of the IMS subscriber location service.

 [91] In order to implement the routing of the location command in the above architecture, the network also includes an LCS routing unit (location service routing unit) to complete the routing function of the location command.

[92] LCS

The routing unit works in two ways: proxy mode and redirect mode. In proxy mode, location command The sending point routes the location command to the LCS routing unit, which routes the location command to the location command receiving point. In the redirect mode, the location command sending point routes the location command to the LCS routing unit, the LCS routing unit routes the location command to the location command sending point, and the location command sending point routes the location command to the location command receiving point, in one route. The process can use only proxy mode or redirect mode, or use proxy mode and redirect mode.

[93] LCS

 The interface between the routing unit and the client policy control unit, the user policy control unit, and the location information providing unit is an internal interface or an L10 interface, and the protocol is SIP, Diameter or HTTP protocol.

[94] In the above architecture, the user policy control unit may obtain the address of the location information providing unit from the user registration control unit in order to obtain the address of the appropriate location information providing unit, and the interface is an internal interface, a direct interface, or through other functions. Physical indirect interface. When the direct interface is used, the interface is L11, which is implemented by SIP, Diameter or HTTP protocol. When the indirect interface is used, the interface can be performed through other intermediate nodes, such as the user contracted data unit 312, and the interface protocol is SIP. , Diameter or HTT P protocol.

 4 is a flow chart of a terminal location information providing method according to the present invention. As shown in FIG. 4, the terminal location information providing method of the present invention includes the following steps: Step S402: The location service control unit 304 acquires location information of the user terminal from one or more access networks; and step S404, the location service control unit 304 The location information of the user terminal is sent to the location service client 302.

 [96] In step 404, the user policy control unit in the location service control unit 304 may acquire the subscription data of the user terminal from the user subscription data unit 312, and perform policy control on the provision of the location information. When the user terminal does not subscribe to the location service, In the case of restricting the provision of location information, etc., it is restricted to provide location information to the user terminal.

 [97] In step 404, the client policy unit in the location service control unit 304 can perform policy control on the location service client 302, and if the location service client 302 lacks rights, etc., then the location service client is restricted to the location service client. End 302 provides location information.

[98] In step S404, the location information providing unit may directly route the location information to the location service client 302; or may route the location information to the client policy control unit or the user policy control unit through the location service routing unit, and then Routed by the client policy control unit, or the user registration control unit The business client 302 is placed.

 [99] The location service routing unit may forward the message by using at least one of the following routing methods: proxy mode, forwarding the location command from the sender directly to the receiver; and redirecting, determining the address of the receiver according to the location command from the sender And send the recipient address information to the sender, who then sends the location command to the recipient.

 [100] The location service control unit 304 transmits the location information of the user terminal to the location service client 302 in at least one of the following situations: the location service client 302 sends a location information request to the location service control unit 304; the location service control unit 304 The location information of the user terminal is periodically sent to the location service client 302; and the location service control unit 304

 Sending the location of the user terminal to the location service client 302 in the event that the location of the user terminal changes

Ι π Λ∑! ,.

 [101] When the location service client 302 is directed to the location service control unit 304

 After the location information request is sent, the location service client 302 can directly send the location request message to the location service control unit 304.

 Client policy control unit, user policy control unit, or location information providing unit.

[102] When the location service client 302 sends a location request message to the location service control unit 304

 In the client policy control unit, the client policy control unit may route the location request message to the user policy control unit or the location information providing unit through the location service routing unit.

[103] When the location service client 302 sends the location request message to the user policy control unit directly or through the client policy control unit, the user policy control unit can route the location request message to the location information providing unit through the location service routing unit.

[104] The location service routing unit forwards the message by using at least one of the following routing methods: proxy mode, forwarding the location request message from the sender directly to the receiver; and redirecting, determining the receiver according to the location request message from the sender The location, and send the location information to the sender, who then sends the location request message to the recipient.

[105] In the case where the location service client 302 sends a location request message to the client policy control unit, the client policy control unit performs policy control on the access of the location service client 302, and forwards the location request message to the user. Policy control unit or location information providing unit. [106] In the case where the location service client 302 sends the location request message directly or through the location service routing unit to the user policy control unit, the user policy control unit acquires the subscription data of the user terminal from the user subscription data unit 312, The information is controlled by the policy, and the location request message is forwarded to the location information providing unit or the location information of the user terminal is directly obtained from the access network.

 [107] In the case where the location service client 302 sends the location request message to the location information providing unit directly or through the client policy control unit or the user policy control unit, the location information providing unit acquires the location information of the user terminal from the access network. .

 [108] The location information providing unit is an independent location information providing unit or a visited domain gateway moving position control unit

[109] wherein the access network comprises at least one of the following networks: a GPRS network, a WLAN network, an ADSL network, and a LAN network.

 FIG. 5 is a schematic diagram of a general terminal location information providing method according to an embodiment of the present invention. As shown in FIG. 5, in a general case, the method for the LCS client to query the location information of the user terminal includes the following steps: [111] S502

 The LCS client queries the client policy control unit for the location information of the user terminal, and the LCS client can query the location information of the IMS user according to the IMS user identity of the user terminal, LCS.

 The client does not need to know the access network type of the user terminal, nor does it need to know which home network the user terminal is in. It only needs to use the MLP protocol to query the location server client policy control unit to query the location information of the user terminal.

[112] S504, the client policy control unit checks the permissions of the LCS client, if the LCS

 If the client does not have permission, the LCS is rejected.

 The client's location query request; if the LCS client queries with a non-IMS subscriber identity, the client policy control unit can convert the non-IMS subscriber identity to the authentic identity of the IMS subscriber.

[113] S506

 The client policy control unit needs to obtain the routing information of the user policy control unit, and routes the location query request to the user policy control unit. In order to complete the routing of the user policy control unit by the client policy control unit, the following methods can be used:

[114] Method a. Store the address information of the user policy control unit in the client policy by configuration or other means. On the control unit, the client policy control unit routes the location query request to the user policy control unit according to the home domain information of the queried user and the address information of the configured user policy control unit.

[115] Method b. The client policy control unit obtains the address information of the user policy control unit according to the queried user information to the LCS routing unit, and routes the location query request to the user policy control unit. The queried user information may be user identification information, home domain information, or other information related to the queried user. The client policy control unit may obtain the address information of the user policy control unit by using the Diameter protocol, the HTTP protocol, the SIP protocol or other protocols to the LCS routing unit query; in the above protocol, the queried user information, the user policy control unit address information It can be passed in xml or other description language.

 [116] Method c. The client policy control unit stores the address information of the home domain interface location server corresponding to the user policy control unit of the queried user by configuration or other manner; the home domain interface location server is a special type of LCS routing unit. The client policy control unit routes the location query request to the home domain interface location server according to the home domain information of the queried user, and the home domain interface location server further routes the location query request to the user policy control unit. The home domain interface location server is usually located in the home domain of the queried user as the entry function unit of the home domain user location query request.

 [117] Method d. The client policy control unit queries the LCS routing unit according to the queried user information, obtains the address information of the home domain interface location server, and routes the location query request to the home domain interface location server, the home domain The interface location server then routes the location query request to the user policy control unit. The queried user information may be user identification information, home domain information, or other information related to the queried user. The client policy control unit may obtain the address information of the user policy control unit by using the Diameter protocol, the HTTP protocol, or other protocols to the LCS routing unit. In the above protocol, the queried user information, the interface user policy control unit address information may pass Xml or other description language to pass.

[118] Method e. The client policy control unit sends a location query request to the LCS routing unit, and the LCS routing unit routes the location query request to the user policy control unit according to the queried user information, or the next hop L CS route The unit, the next hop LCS routing unit continues to perform the routing operation, and finally routes to the user policy control unit; the client policy control unit/LCS routing unit can directly obtain the address of the next hop LCS routing unit/user policy control unit, Can be obtained by routing to other LCS routing units The address of the next hop LCS routing unit/user policy control unit.

[119] The client policy control unit/LCS routing unit may obtain the address information of the next hop LCS routing unit/user policy control unit by using the Diameter protocol, the HTTP protocol, the SIP protocol, or other protocols to the LCS routing unit to query; In the protocol, the queried user information, the next hop LCS routing unit, and the user policy control unit address information may be delivered through xml or other description language.

[120] The above five methods a, b, c, d, e can be summarized into the following three types:

[121] 1) The client policy control unit directly routes the location query to the user policy control unit;

[122] 2

 The client policy control unit routes the location request to the LCS routing unit, and the LCS routing unit routes the location request to the user policy control unit; the intermediate may pass through multiple LCS routing units; and [123] 3

 The client policy control unit routes the location request to the LCS routing unit, the LCS routing unit routes the location request to the client policy control unit, and the client policy control unit routes the location request to the user policy control unit, which can continue through one Or multiple LCS routing units.

 [124] The client policy control unit queries the user policy control unit to query the location information of the user terminal through the above method, and uses the LLP interface to use the RLP protocol.

 [125] S508-S510

 The user policy control unit checks the LCS service subscription data of the IMS user, and adds the relevant LC S attribute, such as the location accuracy, signed by the user to the location query request, if the location information of the user is not allowed to be LCS.

 If the client accesses, the location query request is rejected. In order to obtain the LCS service subscription data of the IMS user, the user policy control unit needs to query the user subscription data unit 312 to obtain the subscription data of the IMS user, and use the Diameter protocol. The user subscription data unit 312 returns the device identification information of the user terminal, such as the device identifier, the IP address, and the like. If an IMS user identifier corresponds to multiple user terminals, the user subscription data unit 312 can return multiple user terminal device identification information.

[126] S512

The user policy control unit obtains routing information of the location information providing unit, and routes the location query request to the location information providing unit. In order to complete the user policy control unit to the location information providing unit By, you can use the following methods:

 [127] Method a. The address information of the location information providing unit is stored in the user policy control unit by configuration or other manner, and the user policy control unit sends the location query request according to the user information of the queried user (eg, the visited domain information) Routed to the location information provider.

[128] Method b. The user policy control unit queries the LCS routing unit according to the user information of the queried user, obtains the address information of the location information providing unit, and routes the location query request to the location information providing unit. The user information of the queried user may be the IMS identification information of the user, the device identification information, the IP address information, the visited domain information, or other information related to the queried user. The user policy control unit may obtain the address information of the location information providing unit by using the Diameter protocol, the HTTP protocol, the SIP protocol, or other protocols to the LCS routing unit. In the above protocol, the user information of the queried user, the location information providing unit address Information can be passed in _xm l or other description language. The LCS routing unit may obtain the address information of the location information providing unit by using a configuration method, or obtain the address information of the location information providing unit by using a method of user registration/notification, such as in the registration information of the user terminal, by the user terminal or the visited domain. The network inserts address information of the location information providing unit, notifying the user of the registration control unit, and the user registration control unit saves the information to the LCS routing unit. The LCS routing unit can be implemented on a user registration control unit, a subscriber subscription data unit 312, or other separate LCS routing unit.

[129] When the function of the LCS routing unit is implemented on the user registration control unit, the user policy control unit can directly access the user registration control unit through the internal or L11 interface to obtain the address information of the location information providing unit.

 [130] When the function of the LCS routing unit is implemented in the user subscription data unit 312, if the address information of the location information providing unit is updated or queried through the Diameter protocol, the AVP of the Diameter protocol needs to be extended as follows:

[131] Add a location information provider unit address attribute value pair, such as V-LCSName

A VP, which is a URI, or a host name, or an IP address; the external application can query the IMS user ID by using the UDR (Us er-Data-Request) / UDA (User-Data- Answer) command. The location information providing unit address information may also be updated by the PUR (Profile-Update-Request) / P UA (Profile-Update-Answer) command to update the location information providing unit address information corresponding to the IMS user identifier. [132] Method c. The user policy control unit sends a location query request to the LCS routing unit, and the LCS routing unit routes the location query request to the location information providing unit or the next hop LCS routing unit according to the queried user information. The routing operation is continued by the next hop LCS routing unit, and finally the location query request is routed to the location information providing unit; the user policy control unit/LCS routing unit can directly obtain the next hop L CS routing unit/location information providing unit. The address may also be obtained by routing to other LCS routing units to obtain the address of the next hop LCS routing unit/location information providing unit.

 [133] The user policy control unit/LCS routing unit may query the LCS routing server to obtain the address information of the next hop LCS routing unit/location information providing unit through the Diameter protocol, the HTTP protocol, the SIP protocol, or other protocols; The queried user information, the LCS routing unit, and the location information providing unit address information can be delivered in xml or other description language.

 [134] The above three methods a, b, c can be summarized into the following three types:

 [135] 1) The user policy control unit directly routes the location query to the location information providing unit.

[136] 2

 The user policy control unit routes the location request to the LCS routing unit, and the LCS routing unit routes the location request to the location information providing unit; the intermediate may pass through multiple LCS routing units.

[137] 3

 The user policy control unit routes the location request to the LCS routing unit, the LCS routing unit routes the location request to the user policy control unit, and the user policy control unit routes the location request to the location information providing unit, which may continue through one or more LCS routing unit.

 [138] The user policy control unit queries the location information of the user terminal according to the device identification information of the user terminal, such as the device identifier, the IP address, and the like, and uses the RLP protocol. If an IMS user corresponds to multiple user terminals, the user policy control unit may query a plurality of location information providing units to obtain location information of each user terminal.

 [139] S514

The location information providing unit receives the location query request of the user policy control unit, checks whether the user policy control unit has the right to query, and if not, rejects the location query request. If yes, the location information providing unit queries the access network to obtain the location information of the user terminal. When the user terminal accesses the IMS through the GPRS network, the location information providing unit can check the V-GMLC through the RLP protocol. The location information of the user terminal is obtained. When the user terminal accesses through the NASS network, the location information providing unit can obtain the location information of the user terminal by using the Diameter protocol to the NASS query.

[140] S516

 The location information providing unit sends the location information of the user terminal to the user policy control unit. The location information providing unit may implement the route to the user policy control unit by recording the user policy control unit address in the request message, or may use the class. The method of requesting a message, implementing routing to the user policy control unit through the LCS routing unit.

[141] S518

 The user policy control unit checks the LCS service subscription data of the user terminal corresponding to the IMS user, if the location information of the user is not allowed to be LCS

 If the client accesses, the location information is refused to be forwarded. In order to obtain the LCS service subscription data of the IMS user, the user policy control unit needs to query the user subscription data unit 312 to obtain the subscription data of the IMS user, and use the Diameter protocol. The user policy control unit sends the location information of the user terminal to the client policy control unit; the user policy control unit may implement the route to the client policy control unit by recording the address of the client policy control unit in the request message, or may also The route to the client policy control unit is implemented by the LCS routing unit by using the class request message method.

[142] S520

 The client policy control unit checks the rights of the LCS client. If successful, the client policy control unit sends the location information of the user terminal to the LCS client.

[143] The above method describes a method for an LCS client to obtain location information of a user terminal by sending a query command.

The LCS client can also obtain the location information of the user terminal from the network by other means. In this case, in order to provide the location information of the user terminal to the LCS client, the network directly passes through steps S516, S518.

The S520 sends the location information of the user terminal to the LCS client.

6 is a schematic diagram of a terminal location information providing method in an emergency service according to an embodiment of the present invention.

 As shown in Figure 6, in the case of emergency services, LCS

 The method for the client to query the location information of the user terminal includes the following steps:

[145] S602

To S612, the user terminal initiates an emergency call and establishes a call with a PSAP (Public Service Access Point). [146] S614, PSAP (LCS

 The client sends a location query request to the client policy control unit of the IMS domain. The PSAP can configure the address information of the client policy control unit.

[147] S616

 The client policy control unit needs to obtain routing information of the location information providing unit, and routes the location query request to the location information providing unit. In order to complete the routing of the client policy control unit to the location information providing unit, the following methods can be used:

[148] Method a. The address information of the location information providing unit is stored in the client policy control unit by configuration or other manner, and the client policy control unit is based on the device identification information of the queried user, such as the device identifier, the IP address, and the like. Obtaining address information of the location information providing unit;

[149] Method b. The client policy control unit queries the LCS routing unit according to the terminal information of the queried user, and obtains the address information of the location information providing unit.

[150] The queried user information may be device identification information of the user terminal, such as a device identifier, an IP address, or the like, or other information related to the queried user terminal. The client policy control unit can pass the Diameter protocol.

, the HTTP protocol, or other protocol to the LCS routing unit query obtains the address information of the location information providing unit; in the above protocol, the terminal information of the queried user, the location information providing unit address information may be transmitted through xml or other description language .

[151] Method c. Carry the corresponding information after the user initiates an emergency call, such as the user is initiating an emergency registration, P-C

The SCF inserts the address information of the location information providing unit, or inserts the access network type of the user, and the client policy control unit determines the address information of the location information providing unit according to the access network type of the emergency call user.

 [152] Method d. The client policy control unit sends a location query request to the LCS routing unit, and the LCS routing unit routes the location query request to the location information providing unit according to the queried user information, or the next hop L CS route The unit continues to perform the routing operation by the next hop LCS routing unit, and finally routes to the location information providing unit; the client policy control unit/LCS routing unit can directly obtain the address of the next hop LCS routing unit/location information providing unit, The address of the next hop LCS routing unit/location information providing unit can be obtained by querying other LCS routing unit methods.

[153] Client Policy Control Unit/LCS Routing Unit can pass Diameter Protocol, HTTP Protocol, SIP Association Or the other protocol to the LCS routing unit to obtain the address information of the next hop LCS routing unit/location information providing unit; in the above protocol, the queried user information, the next hop LCS routing unit, the location information providing unit address information It can be passed in xml or other description language.

[154] Method e. The above client policy control unit and location information providing unit are the same physical entity, and are implemented by using an internal interface.

[155] The above five methods a, b, c, d, e can be summarized into the following three types:

[156] 1) The client policy control unit directly routes the location query to the location information providing unit.

[157] 2

 The client policy control unit routes the location request to the LCS routing unit, and the LCS routing unit routes the location request to the location information providing unit; the intermediate may pass through multiple LCS routing units.

[158] 3

 The client policy control unit routes the location request to the LCS routing unit, the LCS routing unit routes the location request to the client policy control unit, and the client policy control unit routes the location request to the location information providing unit, which can continue through one Or multiple LCS routing units.

 [159] The client policy control unit queries the location information of the user terminal according to the device identification information of the user terminal, such as the device identifier, the IP address, and the like, and uses an internal protocol or an RLP protocol.

 [160] S618

 The location information providing unit receives the location query request of the client policy control unit, checks that this is an emergency service, obtains the location information of the user terminal by accessing the network query, and accesses the IMS through the GPRS network when the user terminal accesses the IMS network. The location information providing unit may obtain the location information of the user terminal by using the RLP protocol to the V-GMLC query. When the user terminal accesses through the NASS network, the location information providing unit may obtain the location information of the user terminal by using the Diameter protocol to the NASS query.

[161] S620

 The location information providing unit returns the response and the location information of the user terminal to the client policy control unit; the location information providing unit may implement the route to the client policy control unit by recording the client policy control unit address in the request message. It is also possible to use the method of the class test request message to implement routing to the client policy control unit through the L CS routing unit.

[162] S622, the client policy control unit returns the location information of the user terminal to the PSAP. 7 is a block diagram of a location command routing system in accordance with the present invention. As shown in FIG. 7, the location command routing system of the present invention includes a sender 702 and a receiver 704, and the system further includes a location service routing unit 706.

 [164] The location command routing system of the present invention routes a location command from a sender to a receiver in at least one of the following three ways: the sender directly sends the location command to the receiver; the sender sends the location command to the location a service routing unit, the location service routing unit routes the location command to the receiver; and the sender sends the location command to the location service routing unit, and the location service routing unit sends the location information of the receiver to the sender, and the sender according to the location information The location command is sent from the receiver. Wherein, the location command can be routed to the receiver through one or more location service routing units.

 [165] In summary, the solution of the present invention can be combined with other services such as IMS. For example, when the user terminal accesses the IMS network through multiple access methods, for example, the NASS defined by the TISPAN accesses the IMS network, and the location information of the user terminal can be queried through the IMS network.

 [166] With the solution of the present invention, an IMS user can sign a location service, can set a prohibition, or allow LC S

 The client accesses the location information of the IMS user, and the application server accesses and processes the location information of the user terminal, so that the location service and other IMS services (such as presence services) can be combined.

 [167] The solution of the present invention can provide control functions of the location service client 302 and the user terminal. For example, the client policy control unit may route the LCS service request to the user policy control unit or the location information providing unit; the user policy control unit may route the LCS service request to the location information providing unit.

 The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of within the technical scope disclosed by the present invention. Changes or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim  [1] 1. A terminal location information providing system, wherein the system comprises:  At least one user terminal; one or more access networks, configured to access the user terminal;  Location service control unit  And acquiring location information of the user terminal from the access network, and sending the location information to a location service client.  [2] 2. The terminal location information providing system according to claim 1, wherein:  Location service control unit  Transmitting the location information of the user terminal to the location service client in at least one of the following situations: the location service client sends a location information request to the location service control unit; the location service control unit  Sending location information of the user terminal to the location service client periodically; and the location service control unit  The location information of the user terminal is sent to the location service client if the location of the user terminal changes.  [3] The terminal location information providing system according to claim 1, wherein the system further comprises: a call session control function unit, and the location service control unit and the one or more accesses The network is connected to complete registration and access control of the user terminal.  [4] The terminal location information providing system according to claim 1, wherein the system further comprises: a user subscription data unit, and the location service control unit  Connected, used to save subscription data of the user terminal.  [5] The terminal location information providing system according to any one of claims 1 to 4, characterized in that , the location service control unit The method includes: a location information providing unit, configured to collect location information for locating a location of the user terminal from the one or more access networks. [6] 6. The terminal location information providing system according to claim 5, wherein the location service control unit  The method further includes: a client policy control unit, configured to control a location command of the location service client.  [7] 7. The terminal location information providing system according to claim 5, wherein the location service control unit  The method further includes: a user policy control unit, configured to perform policy control of the location information query of the user terminal.  [8] 8. The terminal location information providing system according to claim 7, wherein the user policy control unit is located in a home domain of the user terminal. [9] The terminal location information providing system according to claim 5, wherein the location information providing unit is an independent location information providing unit or a visited domain gateway moving location control unit. [10] 10. The terminal location information providing system according to claim 5, wherein the location service control unit  The method further includes: a location service routing unit, connected to the at least one of the client policy control unit, the user policy control unit, and the location information providing unit, for routing a location command.  [11] The terminal location information providing system according to claim 10, wherein the routing manner of the location service routing unit comprises at least one of the following:  Proxy mode, forwarding the location command from the sender directly to the receiver; and redirecting, determining the address of the receiver according to the location command from the sender, and transmitting the recipient address information to the sender And then the sender sends the location request message to the recipient. [12] 12. The terminal location information providing system according to claim 10, wherein the call session control function unit comprises: a user registration control unit, configured to complete a registration function of the user terminal, and to locate the location The address of the information providing unit is provided to the location service routing unit [13] The terminal location information providing system according to claim 12, wherein the call session control function unit further comprises: a user access control unit, and the user registration control unit and the one or A plurality of access networks are connected to complete access control of the user terminal, and send information from the user terminal to the IP multimedia network.  [14] The terminal location information providing system according to claim 12 or 13, wherein the user registration control unit acquires address information of the location information providing unit from the user terminal or the access network, And storing the address information in the location service routing unit.  [15] The terminal location information providing system according to claim 12, wherein the location service routing unit is a user registration control unit, a user subscription data unit, or an independently set location service routing unit.  [16] 16. The terminal location information providing system according to claim 10, wherein the location service routing unit provides an update and query function of the address information of the location information providing unit. [17] 17. A terminal location information providing method, the method comprising:  Location service control unit  Obtaining location information of the user terminal from one or more access networks, where the location service control unit is connected to the location service client and the access network;  Location service control unit  Sending the location information of the user terminal to the location service client. [18] 18. The terminal location information providing method according to claim 17, wherein the method further comprises:  Location service control unit  Obtaining subscription data of the user terminal, and performing policy control on the provision of the location information according to the subscription data.  [19] The terminal location information providing method according to claim 17, wherein the method further comprises: the location service control unit  Policy control is also performed on the location command of the location service client. [20] 20. The terminal location information providing method according to claim 17, wherein the bit is The service control unit forwards the message by using at least one of the following routing methods:  Proxy mode, forwarding the location command from the sender directly to the receiver; and redirecting, determining the address of the receiver according to the location command from the sender, and transmitting the recipient address information to the sender And then the sender sends the location command to the recipient.  [21] The terminal location information providing method according to claim 17, wherein the location service control unit  The location information of the user terminal is sent to the location service client in at least one of the following cases:  The location service client sends a location information request to the location service control unit; the location service control unit  Sending location information of the user terminal to the location service client periodically; and the location service control unit  The location information of the user terminal is sent to the location service client if the location of the user terminal changes.  [22] 22. A location command routing system, including a sender and a receiver, wherein the system further includes a location service routing unit, and the location command routing system uses at least one of the following three manners. The location command is routed from the sender to the receiver: the sender directly sends the location command to the receiver;  Sending, by the sender, a location command to the location service routing unit, the location service routing unit routing the location command to the recipient;  Sending, by the sender, a location command to the location service routing unit, the location service routing unit transmitting location information of the receiver to the sender, where the sender places the location according to the location information A command is sent to the recipient. [23] 23. The terminal location information providing system according to claim 22, wherein the location command is routed to the recipient by one or more location service routing units.