WO2017219754A1 - 一种位置信息获取方法、设备及系统 - Google Patents

一种位置信息获取方法、设备及系统 Download PDF

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Publication number
WO2017219754A1
WO2017219754A1 PCT/CN2017/082039 CN2017082039W WO2017219754A1 WO 2017219754 A1 WO2017219754 A1 WO 2017219754A1 CN 2017082039 W CN2017082039 W CN 2017082039W WO 2017219754 A1 WO2017219754 A1 WO 2017219754A1
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Prior art keywords
location information
location
information
subscription request
identifier
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PCT/CN2017/082039
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English (en)
French (fr)
Inventor
彭宇才
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华为技术有限公司
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Publication of WO2017219754A1 publication Critical patent/WO2017219754A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a location information acquisition method, device, and system.
  • the network has developed from 3G to Long Term Evolution (LTE), and mobile voice has evolved to mobile broadband voice.
  • LTE Long Term Evolution
  • the voice service is carried by a Circuit Switching (CS) domain.
  • the core network is a Mobile Switching Center (MSC)/Vistor Location Register (VLR) and a home location register. (Home Location Register, HLR) provides routing control and business processing.
  • MSC Mobile Switching Center
  • VLR Visitor Location Register
  • HLR Home Location Register
  • the voice service is based on the Voice over LTE (VoLTE) of the IP Multimedia Subsystem (IMS), which is carried by the Packet Switching (PS) domain, and is provided by the IMS in the core network.
  • VoIP Voice over LTE
  • IMS IP Multimedia Subsystem
  • LTE networks cannot cover all areas. Therefore, in order to ensure the use of users, 2G/3G networks and LTE networks coexist. Therefore, CS voice and VoLTE coexist. Based on user experience, network maintenance, etc., it is very important for VoLTE to inherit the voice service and voice functions in CS voice.
  • the evolved NodeB eNodeB
  • the eNodeB needs to report the UE location change information to the voice core network when the location of the user equipment (User Equipment, UE) changes. .
  • the eNodeB cannot report the location change information of the UE to the voice core network when the location of the UE changes, so that VoLTE cannot fully inherit the voice function in the CS voice.
  • the embodiment of the invention discloses a method, a device and a system for acquiring location information.
  • the voice core network can monitor the location of the UE.
  • the first aspect discloses a method for acquiring location information, which is applied to a Proxy-Call Session Control Function (P-CSCF) device in an IMS, and a Policy and Charging Rules Function (PCRF).
  • P-CSCF Proxy-Call Session Control Function
  • PCRF Policy and Charging Rules Function
  • the device sends a subscription request carrying the identifier of the UE and the location change information of the UE, and receives the location information of the UE that is sent by the PCRF device according to the subscription request.
  • the user location change information may indicate that the location information of the UE is reported when the location of the UE identified by the identifier changes, and the UE is any UE that is registered with the IMS.
  • the P-CSCF device can receive the location information of the UE that is sent to the PCRF device when the location of the UE changes, and the P-CSCF device is the device in the voice core network. Therefore, the voice core network pair can be implemented. Monitoring of the location of the UE.
  • the location of the UE is sent to the Serving-Call Session Control Function (S-CSCF) device.
  • S-CSCF Serving-Call Session Control Function
  • the information is such that the S-CSCF device transmits the location information of the UE to the Multi Media Telephony Application Server (MMTel AS). Since the service in the IMS core network is generally processed in the MMTel AS, the location information of the UE is sent to the MMTel AS, so that when the MMTel AS performs the service processing, if the location information of the UE is needed, the location information of the UE may be used. Conduct business processing.
  • MMTel AS Multi Media Telephony Application Server
  • an Rx session with the PCRF device needs to be established to communicate with the PCRF device.
  • the subscription termination request may be sent to the PCRF device, and the subscription termination request may instruct the PCRF device to tear down the Rx session. Therefore, the Rx session may be established or the Rx session may be removed as needed, which may be improved between the PCRF device and the PCRF device.
  • the flexibility of communication In the LTE voice and the voice over WIFI (VoWIFI), the subscription termination request may be a Session-Termination-Request (STR).
  • the location information of the UE may be the identifier of the cell where the UE is located.
  • the location information of the UE may be the IP address of the UE, and thus, The voice core network monitors the location of the UE in different voice services.
  • the IP address may be a Wireless Local Area Networks (WLAN) IP address, an Internet IP address, or the like.
  • the subscription request may be an Authentication Authorization Request (AAR) message.
  • AAR Authentication Authorization Request
  • the location information of the UE may be carried in a Re-Auth-Request (RAR) and sent by the PCRF device.
  • RAR Re-Auth-Request
  • the location information of the UE may be carried in an Authentication Authorization Answer (AAA) message and sent by the PCRF device.
  • AAA Authentication Authorization Answer
  • the location information of the UE when the location information of the UE is carried in the RAR or AAA message, after receiving the RAR or AAA message, the location information of the UE needs to be extracted from the RAR or AAA message, and then the location information of the UE is stored, and then The location information of the UE is transmitted to the S-CSCF device.
  • a second aspect discloses a P-CSCF device, the P-CSCF device comprising means for performing the location information acquisition method provided by the first aspect or any of the possible implementations of the first aspect.
  • a third aspect discloses a P-CSCF device including a processor, a memory, a receiver, and a transmitter, wherein:
  • the memory stores a set of program codes, and the processor is configured to call the program code stored in the memory to control the transceiver to communicate with other network elements;
  • a sender configured to send a subscription request to the PCRF device, where the subscription request carries the identifier of the UE and the location change information of the UE, where the location change information is used to indicate that the location information of the UE is reported when the location of the UE changes, and the UE is registered. Any UE of the IMS;
  • a receiver configured to receive location information of the UE that is sent by the PCRF device according to the subscription request.
  • a fourth aspect discloses a readable storage medium storing program code for a P-CSCF device for performing the location information acquisition method disclosed in the first aspect or any of the possible implementations of the first aspect.
  • the fifth aspect discloses a method for acquiring a location information, where the method is applied to a PCRF device, and receives a subscription request sent by a P-CSCF device, and when determining that the subscription request carries a user that is used to indicate that the location information of the UE is reported when the location of the UE changes.
  • a trigger message carrying the user location change information and the identifier of the UE is sent to the Serving/Packet Data Network (PDN) GateWay, S/P-GW, and the S/P- is received.
  • PDN Packet Data Network
  • S/P-GW Serving/Packet Data Network
  • the GW sends the location information of the UE to the P-CSCF device according to the location information of the UE that is sent by the trigger message.
  • the UE is any UE that has registered the IMS
  • the P-CSCF device is a P-CSCF device that establishes an Rx session with the PCRF device.
  • the PCRF device can send the location information of the UE reported to the PCRF device to the P-CSCF device when the location of the UE changes, and the P-CSCF device is a device in the voice core network, so the voice core network can be implemented to the UE. Position monitoring.
  • receiving a subscription termination request sent by the P-CSCF device tearing down the Rx session with the P-CSCF device according to the subscription termination request, and sending an event trigger message to the S/P-GW, the event trigger message carrying The information indicating that the location information of the UE is reported is stopped, so that the monitoring of the location of the UE is stopped, so that unnecessary processing can be reduced.
  • the subscription termination request may be an STR.
  • the location information of the UE may be the identifier of the cell where the UE is located.
  • the location information of the UE may be the IP address of the UE, and thus, The voice core network monitors the location of the UE in different voice services.
  • the IP address may be a WLAN IP address, an Internet IP address, or the like.
  • the subscription request may be an AAR message.
  • the location information of the UE may be carried in the RAR and sent to the P-CSCF device.
  • the location information of the UE may be carried in an AAA message and sent to the P-CSCF device.
  • the trigger message may be an event triggering an Attribute Value Pair (AVP) message, and the location information of the UE is carried in a Credit Control Request Update (CCR-U) message by S/
  • the P-GW sends, in the WIFI voice, the location information of the UE is carried in the Credit Control Request Initial (CCR-I) message and sent by the S/P-GW.
  • AVP Attribute Value Pair
  • the CCR-U message or the CCR-I message when the location information of the UE is carried in the CCR-U message or the CCR-I message, after receiving the CCR-U message or the CCR-I message, the CCR-U message or the CCR-I message is needed first. The location information of the UE is extracted, and then the location information of the UE is sent to the P-CSCF device.
  • a sixth aspect discloses a PCRF device, the PCRF device comprising means for performing the location information acquisition method provided by any of the possible implementations of the fifth aspect or the fifth aspect.
  • a seventh aspect discloses a PCRF device including a processor, a memory, a receiver, and a transmitter, wherein:
  • a receiver configured to receive a subscription request sent by the P-CSCF device
  • a transmitter configured to: when determining that the subscription request carries user location change information for reporting location information of the UE when the location of the UE changes, sending, to the S/P-GW, the identifier that carries the user location change information and the identifier of the UE Triggering message, the identifier is an identifier carried in the subscription request, and the UE is any UE that has registered the IMS;
  • the receiver is further configured to receive location information of the UE that is sent by the S/P-GW according to the trigger message;
  • the transmitter is further configured to send location information of the UE to the P-CSCF device.
  • the eighth aspect discloses a readable storage medium storing program code for a location information acquisition method disclosed by the PCRF device for performing the fifth aspect or any of the possible implementations of the fifth aspect.
  • a ninth aspect discloses a location information acquisition system, including a P-CSCF device, a PCRF device, and an S/P-GW, where:
  • the P-CSCF device is configured to send a subscription request to the PCRF device, where the subscription request carries the identifier of the UE and the location change information of the user, where the location change information is used to indicate that the location information of the UE is reported when the location of the UE changes, and the UE is registered. Any UE of the IMS;
  • the PCRF device is configured to receive a subscription request sent by the P-CSCF device, and when determining that the subscription request carries the user location change information, send a trigger message carrying the user location change information and the identifier of the UE to the S/P-GW;
  • An S/P-GW configured to send location information of the UE to the PCRF device according to the trigger message
  • the PCRF device is further configured to receive location information of the UE that is sent by the S/P-GW according to the trigger message, and send the location information to the P-CSCF device;
  • the P-CSCF device is further configured to receive location information sent by the PCRF device.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for acquiring location information according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart diagram of another method for acquiring location information according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a P-CSCF device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another P-CSCF device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a PCRF device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another PCRF device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a location information acquiring system according to an embodiment of the present invention.
  • the embodiment of the invention discloses a method, a device and a system for acquiring location information.
  • the voice core network can monitor the location of the UE. The details are described below separately.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention.
  • the network architecture may include an eNodeB, an Evolved Packet Core (EPC), and an IMS core network (Core), where the EPC includes a Mobility Management Entity (MME), S/ P-GW and PCRF equipment, the IMS core network includes a P-CSCF device, an S-CSCF device, and an MMTEL AS.
  • EPC Evolved Packet Core
  • Core IMS core network
  • the eNodeB can report the changed location information of the UE to the PCRF device through the MME and the S/P-GW, so that the EPC can monitor the location of the UE.
  • the EPC cannot monitor.
  • the location information of the UE is further reported to the IMS core network, so that the IMS core network cannot monitor the location of the UE. That is, the IMS core network cannot monitor the location of the UE in the LTE voice service.
  • FIG. 2 is a schematic flowchart of a method for acquiring location information according to an embodiment of the present invention.
  • the location information acquisition method is from the corners of the S/P-GW, the PCRF device, and the P-CSCF device. Degree to describe.
  • the location information acquisition method may include the following steps.
  • the P-CSCF device sends, to the PCRF device, a subscription request that carries the identifier of the UE and the location change information of the user.
  • the P-CSCF device when it is detected that the UE is registered with the IMS, if the location of the UE needs to be monitored, the P-CSCF device sends a subscription request carrying the identifier of the UE and the location change information of the user to the PCRF device, where the user is located.
  • the change information may indicate that the location information of the UE is reported when the location of the UE changes.
  • the subscription request may be an AAR message.
  • the AAR message when the AAR message carries the USER_LOCATION_CHANGE, the AAR message can be considered as carrying the user location change information, and the USER_LOCATION_CHANGE can be the value of the specific action (Specific-Action) AVP, and the value type is an enumerated type.
  • the AAR message when the AAR message carries the UE-Local-IP-Address AVP, the AAR message can be considered to carry the user location change information, and the UE-Local-IP-Address AVP can be a special action (Specific-Action).
  • the value of AVP is of the enumerated type.
  • USER_LOCATION_CHANGE is added to the AVP based on the 29.214 protocol, and an application function (AF) for the user location information is received in the AAR message (AF is equivalent to P -CSCF device)
  • the USER_LOCATION_CHANGE in the AAR indicates that the PCRF is receiving the Policy and Charging Enforcement Function (PCEF) device/bearing binding and event reporting function (BBERF).
  • PCEF Policy and Charging Enforcement Function
  • BBERF Policy and Charging Enforcement Function
  • the device (equivalent to the S/P-GW) reports the user location information (that is, the location information of the UE) sent by the AF session, the user location information is reported to the PCRF device.
  • the user location information is carried in the Requested Access Information (Required-Access-Info) AVP.
  • the PCRF device sends a trigger that carries the user location change information and the identifier of the UE to the S/P-GW. Message.
  • the PCRF device determines whether the subscription request carries the user location change information for indicating the location information of the UE when the location of the UE changes, when the subscription request is received.
  • the user location change information is carried, it indicates that when the location of the UE changes, the location information after the location change of the UE needs to be reported. Therefore, the user location change information and the information carried by the Gx interface are sent to the S/P-GW.
  • the trigger message for the identity is indicating the location information of the UE when the location of the UE changes, when the subscription request is received.
  • the trigger message may be an EventTrigger AVP message.
  • the S/P-GW sends the location information of the UE to the PCRF device according to the trigger message.
  • the S/P-GW in the LTE voice service, after receiving the EventTrigger AVP message, the S/P-GW will carry the CCR-U of the location information of the UE when receiving the location information of the UE reported by the eNodeB through the MME. The message is sent to the PCRF device. When the CCR-U message carries User Location Info, the CCR-U message is considered to carry the location information of the UE.
  • the S/P-GW when receiving the location information of the UE reported by the eNodeB through the MME, the S/P-GW sends a CCR-I message carrying the location information of the UE to the PCRF device.
  • the location information of the UE may be the IP address of the UE, or may be the IP address and port number of the UE.
  • the PCRF device sends the location information of the UE to the P-CSCF device.
  • the PCRF device may first extract the location information of the UE from the CCR-U message, that is, extract the UE from the User Location Info. Location information.
  • the RAR carrying the location information of the UE is then transmitted to the P-CSCF device.
  • the RAR may carry the USER_LOCATION_CHANGE and the 3GPP-User-Location-Info AVP, where the location information of the UE is included in the 3GPP-User-Location-Info AVP, and the USER_LOCATION_CHANGE is used to indicate the location of the subscription request before the P-CSCF device. Reported.
  • the PCRF reports the user using USER_LOCATION_CHANGE. location information.
  • the PCRF device may first extract the location information of the UE from the CCR-I message.
  • the AAA message carrying the location information of the UE is then sent to the P-CSCF device.
  • the AAA message may carry the UE-Local-IP-Address AVP, where the IP address of the UE is included in the UE-Local-IP-Address AVP.
  • the AAA message may also carry a WLAN-UE-WiFi-Local-Port AVP, where the port number of the UE is included in the WLAN-UE-WiFi-Local-Port AVP.
  • the PCRF device may send the received location information of the reported UE to the P-CSCF device, and the P-CSCF device is a device in the voice core network (ie, the IMS core network). Therefore, the voice core network can monitor the location of the UE.
  • FIG. 3 is a schematic flowchart of another method for acquiring location information according to an embodiment of the present invention.
  • the location information obtaining method is described from the perspectives of an eNodeB, an MME, an S/P-GW, a PCRF device, a P-CSCF device, an S-CSCF device, and an MMTEL AS.
  • the location information acquisition method may include the following steps.
  • the P-CSCF device establishes an Rx session with the PCRF device.
  • the P-CSCF device sends, to the PCRF device, a subscription request that carries the identifier of the UE and the location change information of the user.
  • the step 302 is the same as the step 201 in the previous embodiment, and is not described herein again.
  • the PCRF device sends a trigger message carrying the user location change information and the identifier to the S/P-GW. .
  • the step 303 is the same as the step 202 in the previous embodiment, and is not described herein again.
  • the S/P-GW sends a report message carrying the identifier of the UE to the MME.
  • the MME may change the capability information of the report to the location information by using the flag in the Create Session Request or the Modify Bearer Request.
  • Reporting Support Indication is sent to the S/P-GW.
  • the S/P-GW determines whether the MME supports the reporting of the location information according to the flag in the Create Session Request or the Modify Bearer Request.
  • the S/P-GW sends the report message carrying the identifier of the UE to the MME, which may be a change report carrying the action to start the reporting in the Create Session Response message.
  • Action (Change Reporting Action Cell), indicating that the MME needs to notify the S/P-GW when the location changes.
  • the MME sends a location report message carrying the identifier of the UE to the eNodeB.
  • the MME when the MME receives the identifier carried by the S/P-GW and carries the UE, The MME will send a location report message carrying the identifier of the UE to the eNodeB, that is, the location report control message is sent to the eNodeB, that is, the Location Reporting Control message is sent to the eNodeB, and the Location Reporting Control message is sent to the eNodeB.
  • the Reporting Control message can include an Event and a Report Area cell.
  • the event indicates the number of times of reporting, that is, the report is reported only once or the location is changed.
  • the Report Area indicates the granularity of the report, that is, when the cell where the UE is located changes once, or the cell where the UE is located changes twice.
  • the eNodeB When detecting that the location of the UE identified by the identifier changes, the eNodeB sends the location information of the UE to the MME.
  • the eNodeB when the eNodeB detects that the location of the UE identified by the identifier changes, the eNodeB sends the location information of the UE to the MME by using a location report (LOCATION REPORT) message.
  • LOCATION REPORT location report
  • the MME sends the location information of the UE to the S/P-GW.
  • the S/P-GW sends the location information of the UE to the PCRF device according to the trigger message.
  • the step 308 is the same as the step 203 in the previous embodiment, and is not described herein again.
  • the PCRF device sends the location information of the UE to the P-CSCF device.
  • the step 309 is the same as the step 204 in the previous embodiment, and is not described herein again.
  • the P-CSCF device sends the location information of the UE to the S-CSCF device.
  • the P-CSCF device may extract the location information of the UE from the 3GPP-User-Location-Info AVP in the RAR, and store the location of the UE.
  • the information is filled in the P-Access network info (PANI) header field, and the INFO message is constructed and sent to the S-CSCF device.
  • PANI P-Access network info
  • the P-CSCF device may extract the location information of the UE from the UE-Local-IP-Address AVP in the AAA message, and store the location information of the UE.
  • the PANI header field constructs an INFO message for transmission to the S-CSCF device.
  • the S-CSCF device sends the location information of the UE to the MMTel AS.
  • the S-CSCF device after receiving the location information of the UE sent by the P-CSCF device, that is, the INFO message, the S-CSCF device extracts the location information of the UE from the INFO message and stores the location information of the UE to the MMTel AS. , the INFO message will be forwarded to MMTel AS.
  • the MMTel AS after receiving the location information of the UE sent by the S-CSCF device, that is, the INFO message, the MMTel AS extracts the location information of the UE from the INFO message and stores it.
  • the P-CSCF device When detecting that the UE deregisters the IMS, the P-CSCF device sends a subscription termination request to the PCRF device.
  • the IMS ie, IMS de-registration
  • the P-CSCF device will send the STR to the PCRF device.
  • the PCRF device removes the Rx session with the P-CSCF device according to the subscription termination request, and sends an event trigger message carrying the location information for instructing to stop reporting the UE to the S/P-GW.
  • the PCRF device after receiving the STR sent by the P-CSCF device, the PCRF device removes the Rx session with the P-CSCF device according to the STR, and sends the bearer to the S/P-GW.
  • the event triggering message is used to indicate that the location information of the UE is to be reported, and the S/P-GW stops the reporting according to the event triggering message, and sends indication information for instructing the MME to cancel the location information of the reporting UE, and the MME receives the indication information.
  • the report is cancelled, and the indication information for instructing the eNodeB to cancel the location information of the UE is sent to the eNodeB.
  • the PCRF device may send the received location information of the reported UE.
  • the device is sent to the P-CSCF device, and the P-CSCF device is a device in the voice core network (ie, the IMS core network). Therefore, the voice core network can monitor the location of the UE. That is, the location information of the UE location change can be reported to the IMS core network, which can inherit the traditional location information acquisition service, thereby maintaining the consistency of the user experience and network maintenance.
  • the IMS core network/MMTel AS obtains the change of the user location information in real time, it can expand and implement many services: for example, listening, calling, and recording the user's running track during the call recording process. The operator can grasp the user's movement in the network through the location information of the user change outputted by the MMTel AS, and the supervisory department can query and obtain the user's location in real time through the operation and maintenance interface.
  • FIG. 4 is a schematic structural diagram of a P-CSCF device according to an embodiment of the present invention.
  • the P-CSCF device may include:
  • the sending unit 401 is configured to send a subscription request to the PCRF device, where the subscription request carries the identifier of the UE and the user location change information, where the user location change information is used to indicate that the location information of the UE is reported when the location of the UE changes, and the UE is registered. Any UE of the IMS;
  • the receiving unit 402 is further configured to receive location information of the UE that is sent by the PCRF device according to the subscription request sent by the sending unit 401.
  • the sending unit 401 is further configured to receive, by the S-CSCF device, the location information of the transmitting UE that is received by the unit 402, so that the S-CSCF device sends the location information of the UE to the MMTel AS.
  • the location information of the UE may be an IP address of the UE or an identifier of a cell where the UE is located.
  • the P-CSCF device can receive the location information of the UE that is sent by the PCRF device and is reported to the PCRF device when the location of the UE changes, and the P-CSCF device is the voice core network.
  • the device in the device therefore, can realize the monitoring of the location of the UE by the voice core network.
  • FIG. 5 is a schematic structural diagram of another P-CSCF device according to an embodiment of the present invention.
  • the P-CSCF device may include a processor 501, a memory 503, a receiver 503, a transmitter 504, and a bus 505.
  • the processor 501 can be a general purpose central processing unit (CPU), a plurality of CPUs, a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of the present invention. integrated circuit.
  • the memory 502 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • Memory 502 can exist independently and bus 505 is coupled to processor 501. Memory 502 can also be integrated with processor 501.
  • the receiver 503 and the transmitter 504 are configured to communicate with other devices, network elements or communication networks, such as Ethernet, Radio Access Network (RAN), no WLAN, and the like.
  • Bus 505 can include a path for communicating information between the components described above. among them:
  • the memory 502 stores a set of program codes
  • the processor 501 is configured to call the program code stored in the memory 502 to control the receiver 503 and the transmitter 504 to communicate with other network elements;
  • the sender 503 is configured to send a subscription request to the PCRF device, where the subscription request carries the identifier of the UE and the user location change information, where the user location change information is used to indicate that the location information of the UE is reported when the location of the UE changes, and the UE is registered. Any UE of the IMS;
  • the receiver 504 is configured to receive location information of the UE that is sent by the PCRF device according to the subscription request, and send the information to the processor 501.
  • the transmitter 504 is further configured to send the location information of the UE to the S-CSCF device, so that the S-CSCF device will The location information of the UE is sent to the MMTel AS.
  • the location information of the UE may be an IP address of the UE or an identifier of a cell where the UE is located.
  • the P-CSCF device can receive the location information of the UE that is sent by the PCRF device and is reported to the PCRF device when the location of the UE changes, and the P-CSCF device is the voice core network.
  • the device in the device therefore, can realize the monitoring of the location of the UE by the voice core network.
  • FIG. 6 is a schematic structural diagram of a PCRF device according to an embodiment of the present invention.
  • the PCRF device may include:
  • the receiving unit 601 is configured to receive a subscription request sent by the P-CSCF device.
  • the sending unit 602 is further configured to: when the receiving unit 601 determines that the subscription request carries the user location change information for indicating the location information of the UE when the location of the UE changes, sending the user location change information to the S/P-GW. And a trigger message of the identifier of the UE, where the identifier of the UE is an identifier carried in the subscription request, and the UE is any UE that is registered with the IMS;
  • the receiving unit 601 is further configured to receive location information of the UE that is sent by the S/P-GW according to the trigger message sent by the sending unit 602.
  • the sending unit 602 is further configured to send the location information of the UE received by the receiving unit 601 to the P-CSCF device.
  • the location information of the UE may be an IP address of the UE or an identifier of a cell where the UE is located.
  • the PCRF device may transmit the location information of the UE reported to the PCRF device to the P-CSCF device when the location of the UE changes, and the P-CSCF device is the device in the voice core network. Therefore, the voice core network can monitor the location of the UE.
  • FIG. 7 is a schematic structural diagram of another PCRF device according to an embodiment of the present invention.
  • the PCRF device may include a processor 701, a memory 703, a receiver 703, a transmitter 704, and a bus 705.
  • the processor 701 can be a general purpose central processing unit (CPU), a plurality of CPUs, a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present invention. integrated circuit.
  • the memory 702 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 702 can exist independently and the bus 705 is coupled to the processor 701. Memory 702 can also It is integrated with the processor 701.
  • the receiver 703 and the transmitter 704 are configured to communicate with other devices, network elements or communication networks, such as Ethernet, Radio Access Network (RAN), no WLAN, and the like.
  • Bus 705 can include a path for communicating information between the components described above. among them:
  • the memory 702 stores a set of program codes, and the processor 701 is configured to call the program code stored in the memory 702 to control the receiver 703 and the transmitter 704 to communicate with other network elements;
  • the receiver 703 is configured to receive a subscription request sent by the P-CSCF device and send the request to the processor 701.
  • the sender 704 is configured to: when determining that the subscription request carries the user location change information used to indicate the location information of the UE when the location of the UE changes, send the identifier that carries the user location change information and the UE to the S/P-GW.
  • the trigger message, the identifier of the UE is an identifier carried in the subscription request, and the UE is any UE that has registered the IMS;
  • the receiver 703 is further configured to receive the location information of the UE that is sent by the S/P-GW according to the trigger message, and send the information to the processor 701;
  • the transmitter 704 is further configured to send location information of the UE to the P-CSCF device.
  • the location information of the UE may be an IP address of the UE or an identifier of a cell where the UE is located.
  • the P-CSCF device since the PCRF device can transmit the location information of the UE reported to the PCRF device when the location of the UE changes, the P-CSCF device is a device in the voice core network. Therefore, the voice core network can monitor the location of the UE.
  • FIG. 8 is a schematic structural diagram of a location information acquiring system according to an embodiment of the present invention.
  • the system may include a P-CSCF device 801, a PCRF device 802, and an S/P-GW 803, where:
  • the P-CSCF device 801 is configured to send a subscription request to the PCRF device 802, where the subscription request carries the identifier of the UE and the location change information of the UE, where the location change information is used to indicate that the location information of the UE is reported when the location of the UE changes. Is any UE that has registered IMS;
  • the PCRF device 802 is configured to receive a subscription request sent by the P-CSCF device 801, and when it is determined that the subscription request carries the user location change information, send a trigger message carrying the user location change information and the identifier of the UE to the S/P-GW 803.
  • S/P-GW 803, configured to send location information of the UE to the PCRF device 802 according to the trigger message
  • the PCRF device 802 is further configured to receive location information of the UE sent by the S/P-GW 803, and send the location information of the UE to the P-CSCF device 801.
  • the P-CSCF device 801 is further configured to receive location information of the UE sent by the PCRF device 802.
  • the system may further include an S-CSCF device 804 and an MMTel AS 805;
  • the P-CSCF device 801 is further configured to send location information of the UE to the S-CSCF device 804.
  • the S-CSCF device 804 is configured to receive location information of the UE and store the location information of the UE, and send the location information of the UE to the MMTel AS 805.
  • the MMTel AS805 is configured to receive location information of the UE and store it.
  • the location information of the UE may be an IP address of the UE or an identifier of a cell where the UE is located.
  • the P-CSCF device 801 is further configured to establish an Rx session with the PCRF device 802.
  • the P-CSCF device 801 is further configured to: when detecting that the UE logs out of the IMS, send a subscription termination request to the PCRF device 802;
  • the PCRF device 802 is further configured to receive the subscription termination request, remove the Rx session with the P-CSCF device 802 according to the subscription termination request, and send an event trigger message to the S/P-GW 803, where the event trigger message carries the indication to stop reporting the UE. Location information.
  • the system may further include an MME 806 and an S/P-GW 807, where:
  • the S/P-GW 807 is configured to receive a trigger message, and when the MME 806 supports the reporting of the location information, send the report message carrying the identifier of the UE to the MME 806.
  • the MME 806 is configured to receive the report message, and send a location report message carrying the identifier of the UE to the eNodeB 807.
  • the eNodeB 807 is configured to receive the location report message, and when detecting that the location of the UE identified by the identifier changes, send the location information of the UE to the MME 806;
  • the MME 806 is further configured to receive location information of the UE, and send the location information of the UE to the S/P-GW 803.
  • the PCRF device may send the received location information of the reported UE to the P-CSCF device, and the P-CSCF device is the network element in the voice core network (ie, the IMS core network). Therefore, the voice core network can monitor the location of the UE.
  • the embodiment of the invention further discloses a readable storage medium storing program codes of the P-CSCF device and/or the PCRF device for performing the location information acquisition method shown in FIG. 2 or FIG.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, read-only memory (ROM), random access memory (RAM), disk or optical disk.

Abstract

一种位置信息获取方法、设备及系统，包括：P-CSCF设备向PCRF设备发送订阅请求，该订阅请求携带有UE的标识和用户位置变化信息，用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；接收PCRF设备根据订阅请求发送的UE的位置信息。实施本发明实施例，在LTE网络中，可以实现语音核心网对UE位置的监听。

Description

一种位置信息获取方法、设备及系统
本申请要求于2016年6月24日提交中国专利局、申请号为201610472502.3、发明名称为“一种位置信息获取方法、设备及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种位置信息获取方法、设备及系统。
背景技术
随着移动通信技术的不断发展，网络由3G向长期演进(Long Term Evolution，LTE)发展，移动语音向移动宽带语音发展。在2G/3G网络中，语音业务由电路交换(Circuit Switching,CS)域承载，在核心网由移动交换中心(Mobile Switching Center，MSC)/拜访位置寄存器(Vistor Location Register，VLR)和归属位置寄存器(Home Location Register，HLR)提供路由控制和业务处理。在LTE网络中，语音业务是基于网络协议多媒体子系统(IPMultimedia Subsystem，IMS)的LTE语音(Voice over LTE，VoLTE)，由分组(Packet Switching,PS)域承载，在核心网由IMS提供路由控制和业务处理。
在LTE网络发展的初期，LTE网络无法覆盖全部区域，因此，为了保证用户的使用，2G/3G网络和LTE网络是并存的，因此，CS语音与VoLTE是共存的。基于用户体验、网络维护等原因，VoLTE能否继承CS语音中的语音业务和语音功能非常重要。目前，在2G/3G网络中，为了满足监听等语音功能，用户设备(User Equipment，UE)的位置发生变化时，演进型基站(evolved NodeB，eNodeB)需要将UE位置变化信息上报给语音核心网。然而，在LTE网络中，eNodeB无法在UE位置发生变化时，将UE的位置变化信息上报给语音核心网，以致VoLTE无法全部继承CS语音中的语音功能。
发明内容
本发明实施例公开了一种位置信息获取方法、设备及系统，在LTE网络中，可以实现语音核心网对UE位置的监听。
第一方面公开一种位置信息获取方法，该方法应用于IMS中的代理呼叫会话控制功能(Proxy-Call Session Control Function，P-CSCF)设备，向策略控制规则功能(Policy and Charging Rules Function，PCRF)设备发送携带有UE的标识和用户位置变化信息的订阅请求，接收PCRF设备根据订阅请求发送的UE的位置信息。其中，用户位置变化信息可以指示当该标识所标识的UE的位置发生变化时上报该UE的位置信息，该UE是注册了IMS的任一UE。由于P-CSCF设备可以接收到PCRF设备发送的当UE的位置发生变化时上报给PCRF设备的UE的位置信息，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
在一个实施例中，接收到PCRF设备根据订阅请求发送的UE的位置信息之后，将向服务呼叫会话控制功能(Serving-Call Session Control Function，S-CSCF)设备发送UE的位置 信息，以使S-CSCF设备将UE的位置信息发送给多媒体电话应用服务器(Multi Media Telephony Application Server，MMTel AS)。由于在IMS核心网中的业务一般在MMTel AS中进行处理，因此，将UE的位置信息发送给MMTel AS，以便MMTel AS在进行业务处理时，如果需要UE的位置信息，可以根据UE的位置信息进行业务处理。
在一个实施例中，向PCRF设备发送订阅请求之前，先需要建立与PCRF设备的Rx会话，以便与PCRF设备进行通信。此外，当检测到该UE注销IMS时，可以向PCRF设备发送订阅终止请求，订阅终止请求可以指示PCRF设备拆除Rx会话，因此，可以根据需要建立Rx会话或拆除Rx会话，可以提高与PCRF设备间通信的灵活性。其中，在LTE语音和WIFI语音(Voice over WIFI，VoWIFI)中，订阅终止请求可以为会话终止请求(Session-Termination-Request，STR)。
在一个实施例中，当语音业务为LTE语音时，UE的位置信息可以为UE所在小区的标识，当语音业务为WIFI语音时，UE的位置信息可以为UE的IP地址，因此，可以实现在不同语音业务中语音核心网对UE位置的监听。其中，IP地址可以为无线局域网(Wireless Local Area Networks，WLAN)IP地址、因特网IP地址等。
在一个实施例中，在LTE语音和WIFI语音中，订阅请求可以为鉴权授权请求(Authentication Authorization Request，AAR)消息。在LTE语音中，UE的位置信息可以携带在信用重授权消息(Re-Auth-Request，RAR)中由PCRF设备发送过来。在WIFI语音中，UE的位置信息可以携带在鉴权授权响应(Authentication Authorization Answer，AAA)消息中由PCRF设备发送过来。
在一个实施例中，当UE的位置信息携带在RAR或AAA消息中时，接收到RAR或AAA消息之后，先需要从RAR或AAA消息中提取UE的位置信息，之后存储UE的位置信息，并向S-CSCF设备发送UE的位置信息。
第二方面公开一种P-CSCF设备，该P-CSCF设备包括用于执行第一方面或第一方面的任一种可能实现方式所提供的位置信息获取方法的单元。
第三方面公开一种P-CSCF设备，该P-CSCF设备包括处理器、存储器、接收器和发送器，其中：
存储器中存储有一组程序代码，处理器用于调用存储器中存储的程序代码控制收发器与其它网元进行通信；
发送器，用于向PCRF设备发送订阅请求，该订阅请求携带有UE的标识和用户位置变化信息，该用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；
接收器，用于接收PCRF设备根据订阅请求发送的UE的位置信息。
第四方面公开一种可读存储介质，该可读存储介质存储了P-CSCF设备用于执行第一方面或第一方面的任一种可能实现方式所公开的位置信息获取方法的程序代码。
第五方面公开一种位置信息获取方法，该方法应用于PCRF设备，接收P-CSCF设备发送的订阅请求，当确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，将向服务/分组数据网关(Serving/(Packet Data Network，PDN)GateWay，S/P-GW)发送携带有用户位置变化信息和UE的标识的触发消息，接收S/P-GW根据触发消息发送的UE的位置信息，并向P-CSCF设备发送UE的位置信息。其中，UE的标识 是订阅请求中携带的标识，UE是注册了IMS的任一UE，P-CSCF设备是与PCRF设备建立Rx会话的P-CSCF设备。由于PCRF设备可以将当UE的位置发生变化时上报给PCRF设备的UE的位置信息发送给P-CSCF设备，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
在一个实施例中，接收P-CSCF设备发送的订阅终止请求，根据订阅终止请求拆除与P-CSCF设备的Rx会话，并向S/P-GW发送事件触发消息，该事件触发消息携带有用于指示停止上报UE的位置信息的信息，以便停止对UE位置的监听，从而可以减少不必要的处理。其中，在LTE语音和WIFI语音中，订阅终止请求可以为STR。
在一个实施例中，当语音业务为LTE语音时，UE的位置信息可以为UE所在小区的标识，当语音业务为WIFI语音时，UE的位置信息可以为UE的IP地址，因此，可以实现在不同语音业务中语音核心网对UE位置的监听。其中，IP地址可以为WLAN IP地址、因特网IP地址等。
在一个实施例中，在LTE语音和WIFI语音中，订阅请求可以为AAR消息。在LTE语音中，UE的位置信息可以携带在RAR中发送给P-CSCF设备。在WIFI语音中，UE的位置信息可以携带在AAA消息中发送给P-CSCF设备。在LTE语音中，触发消息可以为的事件触发属性值对(Attribute Value Pair，AVP)消息，UE的位置信息是携带在信用控制请求更新(Credit Control Request Update，CCR-U)消息中由S/P-GW发送过来，在WIFI语音中，UE的位置信息是携带在信用控制请求初始(Credit Control Request Initial，CCR-I)消息中由S/P-GW发送过来。
在一个实施例中，当UE的位置信息携带在CCR-U消息或CCR-I消息中时，接收到CCR-U消息或CCR-I消息之后，先需要从CCR-U消息或CCR-I消息中提取UE的位置信息，之后向P-CSCF设备发送UE的位置信息。
第六方面公开一种PCRF设备，该PCRF设备包括用于执行第五方面或第五方面的任一种可能实现方式所提供的位置信息获取方法的单元。
第七方面公开一种PCRF设备，该PCRF设备包括处理器、存储器、接收器和发送器，其中：
接收器，用于接收P-CSCF设备发送的订阅请求；
发送器，用于当确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，向S/P-GW发送携带有用户位置变化信息和UE的标识的触发消息，该标识是订阅请求中携带的标识，UE是注册了IMS的任一UE；
接收器，还用于接收S/P-GW根据触发消息发送的UE的位置信息；
发送器，还用于向P-CSCF设备发送UE的位置信息。
第八方面公开一种可读存储介质，该可读存储介质存储了PCRF设备用于执行第五方面或第五方面的任一种可能实现方式所公开的位置信息获取方法的程序代码。
第九方面公开一种位置信息获取系统，包括P-CSCF设备、PCRF设备和S/P-GW，其中：
P-CSCF设备，用于向PCRF设备发送订阅请求，订阅请求携带有UE的标识和用户位置变化信息，用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；
PCRF设备，用于接收P-CSCF设备发送的订阅请求，当确定订阅请求携带有用户位置变化信息时，向S/P-GW发送携带有用户位置变化信息和UE的标识的触发消息；
S/P-GW，用于根据触发消息向PCRF设备发送的UE的位置信息；
PCRF设备，还用于接收S/P-GW根据触发消息发送的UE的位置信息，并向P-CSCF设备发送所述位置信息；
P-CSCF设备，还用于接收PCRF设备发送的位置信息。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例公开的一种网络架构示意图；
图2是本发明实施例公开的一种位置信息获取方法的流程示意图；
图3是本发明实施例公开的另一种位置信息获取方法的流程示意图；
图4是本发明实施例公开的一种P-CSCF设备的结构示意图；
图5是本发明实施例公开的另一种P-CSCF设备的结构示意图；
图6是本发明实施例公开的一种PCRF设备的结构示意图；
图7是本发明实施例公开的另一种PCRF设备的结构示意图；
图8是本发明实施例公开的一种位置信息获取系统的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例公开了一种位置信息获取方法、设备及系统，在LTE网络中，可以实现语音核心网对UE位置的监听。以下分别进行详细说明。
为了更好地理解本发明实施例公开的一种位置信息获取方法、设备及系统，下面先对本发明实施例使用的网络架构进行描述。请参阅图1，图1是本发明实施例公开的一种网络架构示意图。如图1所示，该网络架构可以包括eNodeB、演进型分组核心网(Evolved Packet Core，EPC)和IMS核心网(Core)，其中，EPC包括移动管理实体(Mobility Management Entity，MME)、S/P-GW和PCRF设备，IMS核心网包括P-CSCF设备、S-CSCF设备和MMTEL AS。在LTE网络中，当UE的位置发生变化时，eNodeB可以通过MME和S/P-GW将UE变化后的位置信息上报给PCRF设备，从而实现EPC对UE位置的监听，然而，EPC无法将监听到的UE的位置信息进一步上报给IMS核心网，以致无法实现IMS核心网对UE位置的监听，即LTE语音业务中无法实现IMS核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图2，图2是本发明实施例公开的一种位置信息获取方法的流程示意图。其中，该位置信息获取方法是从S/P-GW、PCRF设备和P-CSCF设备的角 度来描述的。如图2所示，该位置信息获取方法可以包括以下步骤。
201、P-CSCF设备向PCRF设备发送携带有UE的标识和用户位置变化信息的订阅请求。
本实施例中，当检测到UE注册完IMS时，如果需要对该UE的位置进行监听，则P-CSCF设备将向PCRF设备发送携带有UE的标识和用户位置变化信息的订阅请求，用户位置变化信息可以指示当UE的位置发生变化时上报UE的位置信息。
本实施例中，在LTE语音业务和WIFI语音业务中，订阅请求可以为AAR消息。在LTE语音业务中，当AAR消息中携带有USER_LOCATION_CHANGE时，可以认为AAR消息携带有用户位置变化信息，USER_LOCATION_CHANGE可以是特殊动作(Specific-Action)AVP的取值，取值类型为枚举类型。在WIFI语音业务中，当AAR消息中携带有UE-Local-IP-Address AVP时，可以认为AAR消息携带有用户位置变化信息，UE-Local-IP-Address AVP可以是特殊动作(Specific-Action)AVP的取值，取值类型为枚举类型。
本实施例中，在LTE语音中，是在29.214协议基础上，在AVP中增加了USER_LOCATION_CHANGE，在AAR消息中，接收到用于用户位置信息的应用功能(Application Function，AF)(AF相当于P-CSCF设备)请求之后，AAR中的USER_LOCATION_CHANGE指示PCRF在接收到策略和计费执行功能(Policy and Charging Enforcement Function，PCEF)设备/承载绑定及事件报告功能(Bearing Binding and Event Report Function，BBERF)设备(相当于S/P-GW)对应AF会话发送的用户位置信息(即UE的位置信息)报告时，将用户位置信息上报给PCRF设备。用户位置信息携带在请求接入信息(Required-Access-Info)AVP中。
202、当确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，PCRF设备向S/P-GW发送携带有用户位置变化信息和UE的标识的触发消息。
本实施例中，PCRF设备接收到P-CSCF设备发送的订阅请求之后，将判断订阅请求中是否携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息，当订阅请求中携带有用户位置变化信息时，表明当UE的位置发生变化时，需要上报UE的位置变化后的位置信息，因此，将通过Gx接口向S/P-GW发送携带有用户位置变化信息和该标识的触发消息。
本实施例中，在LTE语音业务中，当AAR消息中存在USER_LOCATION_CHANGE时，确定订阅请求中携带有用户位置变化信息。在WIFI语音业务中，当AAR消息中存在UE-Local-IP-Address AVP时，确定订阅请求中携带有用户位置变化信息。在LTE语音业务中，触发消息可以为事件触发(EventTrigger)AVP消息。
203、S/P-GW根据该触发消息将该UE的位置信息发送给PCRF设备。
本实施例中，在LTE语音业务中，S/P-GW接收到EventTrigger AVP消息之后，当接收到eNodeB通过MME上报的该UE的位置信息时，将携带有该UE的位置信息的CCR-U消息发送给PCRF设备。当CCR-U消息携带有用户位置信息(User Location Info)时，将认为CCR-U消息携带有该UE的位置信息。在WIFI语音业务中，当接收到eNodeB通过MME上报的该UE的位置信息时，S/P-GW将携带有该UE的位置信息的CCR-I消息发送给PCRF设备。在WIFI语音业务中，UE的位置信息可以为UE的IP地址，也可以为UE的IP地址和端口号。
204、PCRF设备向P-CSCF设备发送UE的位置信息。
本实施例中，在LTE语音业务中，PCRF设备接收到S/P-GW发送的CCR-U消息之后，可以先从CCR-U消息中提取UE的位置信息，即从User Location Info中提取UE的位置信息。之后向P-CSCF设备发送携带有UE的位置信息的RAR。其中，RAR可以携带有USER_LOCATION_CHANGE和3GPP-User-Location-Info AVP，其中，UE的位置信息包括在3GPP-User-Location-Info AVP中，USER_LOCATION_CHANGE用于表明是针对P-CSCF设备之前订阅请求的位置上报。在29.214协议基础上，在RAR中，在接收到PCEF设备/BBERF设备(相当于S/P-GW)对应AF会话发送的用户位置信息(即UE的位置信息)报告时，PCRF使用USER_LOCATION_CHANGE上报用户位置信息。
本实施例中，在WIFI语音业务中，PCRF设备接收到S/P-GW发送的CCR-I消息之后，可以先从CCR-I消息中提取UE的位置信息。之后向P-CSCF设备发送携带有UE的位置信息的AAA消息。其中，AAA消息可以携带有UE-Local-IP-Address AVP，其中，UE的IP地址包括在UE-Local-IP-Address AVP中。此外，AAA消息还可以携带有WLAN-UE-WiFi-Local-Port AVP，其中，UE的端口号包括在WLAN-UE-WiFi-Local-Port AVP中。
在图2所描述的位置信息获取方法中，PCRF设备可以将接收的上报的UE的位置信息发送给P-CSCF设备，而P-CSCF设备是语音核心网(即IMS核心网)中的设备，因此，可以实现语音核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图3，图3是本发明实施例公开的另一种位置信息获取方法的流程示意图。其中，该位置信息获取方法是从eNodeB、MME、S/P-GW、PCRF设备、P-CSCF设备、S-CSCF设备和MMTEL AS的角度来描述的。如图3所示，该位置信息获取方法可以包括以下步骤。
301、P-CSCF设备建立与PCRF设备的Rx会话。
302、P-CSCF设备向PCRF设备发送携带有UE的标识和用户位置变化信息的订阅请求。
其中，步骤302与前面实施例中的步骤201相同，本发明实施例此处不作赘述。
303、当确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，PCRF设备向S/P-GW发送携带有用户位置变化信息和该标识的触发消息。
其中，步骤303与前面实施例中的步骤202相同，本发明实施例此处不作赘述。
304、当MME支持上报位置信息时，S/P-GW向MME发送携带有UE的标识的上报消息。
本实施例中，在LTE语音业务中，MME可以将是否支持上报位置信息的能力信息通过创建会话请求(Create Session Request)或修改承载请求(Modify Bearer Request)中的标志位改变上报支持指示(Change Reporting Support Indication)发送给S/P-GW，S/P-GW接收到PCRF设备发送的事件触发AVP消息之后，将根据创建会话请求或修改承载请求中的标志位判断MME是否支持上报位置信息，当MME支持上报位置信息时，S/P-GW向MME发送携带有UE的标识的上报消息，可以是在创建会话响应(Create Session Response)消息中携带动作为开始上报(Starting Reporting)的改变上报动作(Change Reporting Action信元)，指示MME需要在位置变化时通知S/P-GW。
305、MME向eNodeB发送携带有UE的标识的位置上报消息。
本实施例中，在LTE语音业务中，当MME接收到S/P-GW发送的携带有UE的标识的上 报消息，即接收到Create Session Response中存在Change Reporting Action和Starting Reporting时，MME将向eNodeB发送携带有UE的标识的位置上报消息，即向eNodeB发送位置上报控制(Location Reporting Control)消息，该Location Reporting Control消息中可以包含次数(Event)和上报粒度(Report Area)信元。其中，Event指示上报的次数，即只上报一次还是位置变化就上报，Report Area指示上报的粒度，即当UE所在小区变化一次时进行上报，还是UE所在小区变化两次进行上报。
306、当检测到该标识所标识的UE的位置发生变化时，eNodeB将UE的位置信息发送给MME。
本实施例中，eNodeB检测到该标识所标识的UE的位置发生变化时，将UE的位置信息通过位置上报(LOCATION REPORT)消息发送给MME。
307、MME将UE的位置信息发送给S/P-GW。
308、S/P-GW根据该触发消息将UE的位置信息发送给PCRF设备。
其中，步骤308与前面实施例中的步骤203相同，本发明实施例此处不作赘述。
309、PCRF设备向P-CSCF设备发送UE的位置信息。
其中，步骤309与前面实施例中的步骤204相同，本发明实施例此处不作赘述。
310、P-CSCF设备向S-CSCF设备发送UE的位置信息。
本实施例中，在LTE语音业务中，P-CSCF设备接收到PCRF设备发送的RAR之后，可以从RAR中的3GPP-User-Location-Info AVP提取UE的位置信息并存储，以及将UE的位置信息填入接入网信息(P-Access network info，PANI)头域，构造INFO消息发送给S-CSCF设备。在WIFI语音业务中，P-CSCF设备接收到PCRF设备发送的AAA消息之后，可以从AAA消息中的UE-Local-IP-Address AVP提取UE的位置信息并存储，以及将UE的位置信息填入PANI头域，构造INFO消息发送给S-CSCF设备。
311、S-CSCF设备将UE的位置信息发送给MMTel AS。
本实施例中，S-CSCF设备接收到P-CSCF设备发送的UE的位置信息，即INFO消息之后，将从INFO消息中提取UE的位置信息并存储，以及将UE的位置信息发送给MMTel AS，即将INFO消息转发给MMTel AS。
本实施例中，MMTel AS接收到S-CSCF设备发送的UE的位置信息，即INFO消息之后，将从INFO消息中提取UE的位置信息并存储。
312、当检测到UE注销IMS时，P-CSCF设备向PCRF设备发送订阅终止请求。
本实施例中，当UE离开LTE网络(WIFI网络)覆盖范围或关机时，将发起注销IMS(即IMS去注册)，当检测到UE注销IMS时，P-CSCF设备将向PCRF设备发送STR。
313、PCRF设备根据订阅终止请求拆除与P-CSCF设备的Rx会话，并向S/P-GW发送携带有用于指示停止上报UE的位置信息的事件触发消息。
本实施例中，在LTE语音业务和WIFI语音业务中，PCRF设备接收到P-CSCF设备发送的STR之后，将根据STR拆除与P-CSCF设备的Rx会话，并向S/P-GW发送携带有用于指示停止上报UE的位置信息的事件触发消息，S/P-GW将根据事件触发消息停止上报，并向MME发送用于指示MME取消上报UE的位置信息的指示信息，MME接收到指示信息之后，将取消上报，并向eNodeB发送用于指示eNodeB取消上报UE的位置信息的指示信息。
在图3所描述的位置信息获取方法中，PCRF设备可以将接收的上报的UE的位置信息发 送给P-CSCF设备，而P-CSCF设备是语音核心网(即IMS核心网)中的设备，因此，可以实现语音核心网对UE位置的监听。也即是可以将UE位置变化后的位置信息上报给IMS核心网，可以实现对传统位置信息获取业务的继承，从而可以保持用户体验和网络维护的一致性。此外，当IMS核心网/MMTel AS实时获取到用户位置信息的变化情况后，则可以扩展实现很多业务：例如监听、呼叫话单记录呼叫过程中用户的运行轨迹。运营商通过MMTel AS输出的用户变化的位置信息掌握用户在网络中移动情况、监管部门通过运维接口可以实时查询获得用户位置等等。
基于图1所示的网络架构，请参阅图4，图4是本发明实施例公开的一种P-CSCF设备的结构示意图。如图4所示，该P-CSCF设备可以包括：
发送单元401，用于向PCRF设备发送订阅请求，订阅请求携带有UE的标识和用户位置变化信息，用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；
接收单元402，还用于接收PCRF设备根据发送单元401发送的订阅请求发送的UE的位置信息。
作为一种可能的实施方式，发送单元401，还用于向S-CSCF设备接收单元402接收的发送UE的位置信息，以使S-CSCF设备将UE的位置信息发送给MMTel AS。
作为一种可能的实施方式，UE的位置信息可以为UE的IP地址或UE所在小区的标识。
在图4所描述的P-CSCF设备中，由于P-CSCF设备可以接收到PCRF设备发送的当UE的位置发生变化时上报给PCRF设备的UE的位置信息，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图5，图5是本发明实施例公开的另一种P-CSCF设备的结构示意图。如图5所示，该P-CSCF设备可以包括：处理器501、存储器503、接收器503、发送器504和总线505。处理器501可以是一个通用中央处理器(CPU)，多个CPU，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。存储器502可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器502可以是独立存在，总线505与处理器501相连接。存储器502也可以和处理器501集成在一起。接收器503和发送器504，用于与其他设备、网元或通信网络通信，如以太网，无线接入网(RAN)，无WLAN等。总线505可包括一通路，在上述组件之间传送信息。其中：
存储器502中存储有一组程序代码，处理器501用于调用存储器502中存储的程序代码控制接收器503和发送器504与其它网元进行通信；
发送器503，用于向PCRF设备发送订阅请求，订阅请求携带有UE的标识和用户位置变化信息，用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；
接收器504，用于接收PCRF设备根据订阅请求发送的UE的位置信息并发送给处理器501。
作为一种可能的实施方式，接收器503接收PCRF设备根据订阅请求发送的UE的位置信息之后，发送器504，还用于向S-CSCF设备发送UE的位置信息，以使S-CSCF设备将UE的位置信息发送给MMTel AS。
作为一种可能的实施方式，UE的位置信息可以为UE的IP地址或UE所在小区的标识。
在图5所描述的P-CSCF设备中，由于P-CSCF设备可以接收到PCRF设备发送的当UE的位置发生变化时上报给PCRF设备的UE的位置信息，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图6，图6是本发明实施例公开的一种PCRF设备的结构示意图。如图6所示，该PCRF设备可以包括：
接收单元601，用于接收P-CSCF设备发送的订阅请求；
发送单元602，还用于当接收单元601确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，向S/P-GW发送携带有用户位置变化信息和UE的标识的触发消息，UE的标识是订阅请求中携带的标识，UE是注册了IMS的任一UE；
接收单元601，还用于接收S/P-GW根据发送单元602发送的触发消息发送的UE的位置信息；
发送单元602，还用于向P-CSCF设备发送接收单元601接收的UE的位置信息。
作为一种可能的实施方式，UE的位置信息可以为UE的IP地址或UE所在小区的标识。
在图6所描述的PCRF设备中，由于PCRF设备可以将当UE的位置发生变化时上报给PCRF设备的UE的位置信息发送给P-CSCF设备，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图7，图7是本发明实施例公开的另一种PCRF设备的结构示意图。如图7所示，该PCRF设备可以包括：处理器701、存储器703、接收器703、发送器704和总线705。处理器701可以是一个通用中央处理器(CPU)，多个CPU，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。存储器702可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器702可以是独立存在，总线705与处理器701相连接。存储器702也可以 和处理器701集成在一起。接收器703和发送器704，用于与其他设备、网元或通信网络通信，如以太网，无线接入网(RAN)，无WLAN等。总线705可包括一通路，在上述组件之间传送信息。其中：
存储器702中存储有一组程序代码，处理器701用于调用存储器702中存储的程序代码控制接收器703和发送器704与其它网元进行通信；
接收器703，用于接收P-CSCF设备发送的订阅请求并发送给处理器701；
发送器704，用于当确定订阅请求携带有用于指示当UE的位置发生变化时上报UE的位置信息的用户位置变化信息时，向S/P-GW发送携带有用户位置变化信息和UE的标识的触发消息，UE的标识是订阅请求中携带的标识，UE是注册了IMS的任一UE；
接收器703，还用于接收S/P-GW根据触发消息发送的UE的位置信息并发送给处理器701；
发送器704，还用于向P-CSCF设备发送UE的位置信息。
作为一种可能的实施方式，UE的位置信息可以为UE的IP地址或UE所在小区的标识。
在图7所描述的PCRF设备中，由于PCRF设备可以将当UE的位置发生变化时上报给PCRF设备的UE的位置信息发送给P-CSCF设备，而P-CSCF设备是语音核心网中的设备，因此，可以实现语音核心网对UE位置的监听。
基于图1所示的网络架构，请参阅图8，图8是本发明实施例公开的一种位置信息获取系统的结构示意图。如图8所示，该系统可以包括P-CSCF设备801、PCRF设备802和S/P-GW803，其中：
P-CSCF设备801，用于向PCRF设备802发送订阅请求，订阅请求携带有UE的标识和用户位置变化信息，用户位置变化信息用于指示当UE的位置发生变化时上报UE的位置信息，UE是注册了IMS的任一UE；
PCRF设备802，用于接收P-CSCF设备801发送的订阅请求，当确定订阅请求携带有用户位置变化信息时，向S/P-GW803发送携带有用户位置变化信息和UE的标识的触发消息
S/P-GW803，用于根据触发消息向PCRF设备802发送的UE的位置信息；
PCRF设备802，还用于接收S/P-GW803发送的UE的位置信息，并向P-CSCF设备801发送UE的位置信息；
P-CSCF设备801，还用于接收PCRF设备802发送的UE的位置信息。
作为一种可能的实施方式，该系统还可以包括S-CSCF设备804和MMTel AS805；
P-CSCF设备801，还用于向S-CSCF设备804发送UE的位置信息；
S-CSCF设备804，用于接收UE的位置信息并存储，以及将UE的位置信息发送给MMTel AS805；
MMTel AS805，用于接收UE的位置信息并存储。
作为一种可能的实施方式，UE的位置信息可以为UE的IP地址或UE所在小区的标识。
作为一种可能的实施方式，P-CSCF设备801，还用于建立与PCRF设备802的Rx会话；
P-CSCF设备801，还用于当检测到UE注销IMS时，向PCRF设备802发送订阅终止请求；
PCRF设备802，还用于接收订阅终止请求，根据订阅终止请求拆除与P-CSCF设备802的Rx会话，并向S/P-GW803发送事件触发消息，事件触发消息携带有用于指示停止上报UE 的位置信息的信息。
作为一种可能的实施方式，该系统还可以包括MME806和S/P-GW807，其中：
S/P-GW807，用于接收触发消息，并当MME806支持上报位置信息时，向MME806发送携带有UE的标识的上报消息；
MME806，用于接收该上报消息，并向eNodeB 807发送携带有UE的标识的位置上报消息；
eNodeB807，用于接收该位置上报消息，并当检测到该标识所标识的UE的位置发生变化时，将UE的位置信息发送给MME806；
MME806，还用于接收UE的位置信息，并将UE的位置信息发送给S/P-GW803。
在图8所描述的位置信息获取系统中，PCRF设备可以将接收的上报的UE的位置信息发送给P-CSCF设备，而P-CSCF设备是语音核心网(即IMS核心网)中的网元，因此，可以实现语音核心网对UE位置的监听。
本发明实施例还公开了一种可读存储介质，该可读存储介质存储了P-CSCF设备和/PCRF设备用于执行图2或图3所示的位置信息获取方法的程序代码。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：闪存盘、只读存储器(read-only memory，ROM)、随机存取器(random access memory，RAM)、磁盘或光盘等。
尽管在此结合各实施例对本发明进行了描述，然而，在实施所要求保护的本发明过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
以上对本发明实施例公开的位置信息获取方法、设备及系统进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (13)

  1. 一种位置信息获取方法，应用于多媒体系统IMS中的代理呼叫会话控制功能P-CSCF设备，其特征在于，包括：
    向策略控制规则功能PCRF设备发送订阅请求，所述订阅请求携带有用户设备UE的标识和用户位置变化信息，所述用户位置变化信息用于指示当所述UE的位置发生变化时上报所述UE的位置信息，所述UE是注册了所述IMS的任一UE；
    接收所述PCRF设备根据所述订阅请求发送的所述UE的位置信息。
  2. 根据权利要求1所述的方法，其特征在于，所述接收所述PCRF设备根据所述订阅请求发送的所述UE的位置信息之后，所述方法还包括：
    向服务呼叫会话控制功能S-CSCF设备发送所述位置信息，以使所述S-CSCF设备将所述位置信息发送给多媒体电话应用服务器MMTel AS。
  3. 根据权利要求1或2所述的方法，其特征在于，所述位置信息为所述UE的IP地址或所述UE所在小区的标识。
  4. 一种位置信息获取方法，其特征在于，包括：
    接收代理呼叫会话控制功能P-CSCF设备发送的订阅请求；
    当确定所述订阅请求携带有用于指示当用户设备UE的位置发生变化时上报所述UE的位置信息的用户位置变化信息时，向服务/分组数据网关S/P-GW发送携带有所述用户位置变化信息和所述UE的标识的触发消息，所述标识是所述订阅请求中携带的标识，所述UE是注册了多媒体系统IMS的任一UE；
    接收所述S/P-GW根据所述触发消息发送的所述UE的位置信息；
    向所述P-CSCF设备发送所述位置信息。
  5. 根据权利要求4所述的方法，其特征在于，所述位置信息为所述UE的IP地址或所述UE所在小区的标识。
  6. 一种代理呼叫会话控制功能P-CSCF设备，其特征在于，包括：
    发送单元，用于向策略控制规则功能PCRF设备发送订阅请求，所述订阅请求携带有用户设备UE的标识和用户位置变化信息，所述用户位置变化信息用于指示当所述UE的位置发生变化时上报所述UE的位置信息，所述UE是注册了多媒体系统IMS的任一UE；
    接收单元，还用于接收所述PCRF设备根据所述发送单元发送的订阅请求发送的所述UE的位置信息。
  7. 根据权利要求6所述的P-CSCF设备，其特征在于，所述发送单元，还用于向服务呼叫会话控制功能S-CSCF设备发送所述位置信息，以使所述S-CSCF设备将所述位置信息发送给多媒体电话应用服务器MMTel AS。
  8. 根据权利要求6或7所述的P-CSCF设备，其特征在于，所述位置信息为所述UE的IP地址或所述UE所在小区的标识。
  9. 一种策略控制规则功能PCRF设备，其特征在于，包括：
    接收单元，用于接收代理呼叫会话控制功能P-CSCF设备发送的订阅请求；
    发送单元，还用于当确定所述接收单元接收的订阅请求携带有用于指示当用户设备UE的位置发生变化时上报所述UE的位置信息的用户位置变化信息时，向服务/分组数据网关S/P-GW发送携带有所述用户位置变化信息和所述UE的标识的触发消息，所述标识是所述订阅请求中携带的标识，所述UE是注册了多媒体系统IMS的任一UE；
    所述接收单元，还用于接收所述S/P-GW根据所述发送单元发送的触发消息发送的所述UE的位置信息；
    所述发送单元，还用于向所述P-CSCF设备发送所述接收单元接收的位置信息。
  10. 根据权利要求9所述的PCRF设备，其特征在于，所述位置信息为所述UE的IP地址或所述UE所在小区的标识。
  11. 一种位置信息获取系统，其特征在于，包括代理呼叫会话控制功能P-CSCF设备、策略控制规则功能PCRF设备和服务/分组数据网关S/P-GW，其中：
    所述P-CSCF设备，用于向所述PCRF设备发送订阅请求，所述订阅请求携带有用户设备UE的标识和用户位置变化信息，所述用户位置变化信息用于指示当所述UE的位置发生变化时上报所述UE的位置信息，所述UE是注册了多媒体系统IMS的任一UE；
    所述PCRF设备，用于接收所述P-CSCF设备发送的所述订阅请求，当确定所述订阅请求携带有所述用户位置变化信息时，向所述S/P-GW发送携带有所述用户位置变化信息和所述标识的触发消息；
    所述S/P-GW，用于根据所述触发消息向所述PCRF设备发送的UE的位置信息；
    所述PCRF设备，还用于接收所述S/P-GW发送的所述UE的位置信息，并向所述P-CSCF设备发送所述位置信息；
    所述P-CSCF设备，还用于接收所述PCRF设备发送的所述位置信息。
  12. 根据权利要求11所述的系统，其特征在于，所述系统还包括服务呼叫会话控制功能S-CSCF设备和多媒体电话应用服务器MMTel AS；
    所述P-CSCF设备，还用于向所述S-CSCF设备发送所述位置信息；
    所述S-CSCF设备，用于接收所述位置信息并存储，以及将所述位置信息发送给所述MMTel AS；
    所述MMTel AS，用于接收所述位置信息并存储。
  13. 根据权利要求11或12所述的系统，其特征在于，所述位置信息为所述UE的IP地址或所述UE所在小区的标识。
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