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WO2011020375A1 - 长期演进网络中终端切换时的定位处理方法及增强型服务移动位置中心 - Google Patents

长期演进网络中终端切换时的定位处理方法及增强型服务移动位置中心 Download PDF

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Publication number
WO2011020375A1
WO2011020375A1 PCT/CN2010/074383 CN2010074383W WO2011020375A1 WO 2011020375 A1 WO2011020375 A1 WO 2011020375A1 CN 2010074383 W CN2010074383 W CN 2010074383W WO 2011020375 A1 WO2011020375 A1 WO 2011020375A1
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Prior art keywords
positioning
smlc
terminal
pdu
term evolution
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PCT/CN2010/074383
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English (en)
French (fr)
Inventor
黄波
黄亚达
吴昊
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ZTE Corp
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ZTE Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0064Transmission or use of information for re-establishing the radio link of control information between different access points
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to a positioning service of a Long Term Evolution (LTE) network, and more particularly to a positioning processing method and an enhanced service mobile location center in a terminal handover in an LTE network.
  • LTE Long Term Evolution
  • FIG. 1 is a flow chart of an inter-Evolved NodeB (eNB) handover using an X2 interface, including the following steps: Step 110: The source eNB sends a handover request to the target eNB;
  • eNB inter-Evolved NodeB
  • Step 120 The target eNB determines that the handover can be continued, and sends a handover response to the source eNB, where the target eNB related information, such as a new Cell-Radio Network Temporary Identifier (C-RNTI), and target eNB security information. And random access parameters, etc.;
  • C-RNTI Cell-Radio Network Temporary Identifier
  • Step 130 After receiving the handover response of the target eNB, the source eNB sends a handover command to the terminal (UE), where the new eNB carries the new C-RNTI, the target eNB security information, the random access parameter, and the like.
  • Step 140 The UE receives After the handover command, the synchronization with the target eNB is performed, and the access is successful. After the target cell, sending a handover complete message to the target eNB;
  • Step 150 The target eNB updates the bearer path with the Mobility Management Entity ( ⁇ ), and notifies the service gateway of the new bearer path.
  • Step 160 The target eNB sends a release resource message to the source eNB, requesting the source eNB to release related resources, such as a UE context, and the handover process ends.
  • Location Services is a new type of value-added service provided by mobile communication networks.
  • the service obtains the location information (latitude and longitude, movement speed, etc.) of the terminal through wireless positioning technology, and provides it to the terminal, the mobile communication network or other external entities to implement various location-related services.
  • the current positioning methods can be divided into two categories, namely, a network-based positioning method and a UE-related (based on UE or UE-assisted) positioning method.
  • the UE does not participate in the positioning signaling interaction of the positioning process.
  • the positioning measurement and reporting are performed independently by the network.
  • the UE-related UE or UE-assisted positioning method the UE participates in the positioning measurement and reporting process, such as the Observed Time Difference (OTDOA) positioning method.
  • OTDA Observed Time Difference
  • the terminal can measure the signal of the serving cell or the neighboring cell, or measure the satellite signal through the built-in positioning module to obtain data for calculating the current location of the terminal.
  • the continuity of the positioning service needs to be maintained according to requirements.
  • the continuity of the positioning service when the handover occurs is not described in the current protocol, so it needs to be improved.
  • the technical problem to be solved by the present invention is to provide a positioning processing method for a terminal handover in a long term evolution network and an enhanced service mobile location center, which can maintain positioning service continuity when a UE switches during a positioning service.
  • the present invention provides a positioning processing method for terminal handover in a long term evolution network, including:
  • the terminal or the source evolved base station eNB transmits the long term evolution location protocol protocol data unit to the enhanced service mobile location center E-SMLC during the location service processing process.
  • the above method can also have the following characteristics:
  • the step of transmitting the Long Term Evolution (Positioning Protocol Protocol) data unit to the enhanced service mobile location center E-SMLC includes:
  • LDP Long Term Evolution Location Protocol
  • the source evolved base station eNB transmits the Long Term Evolution Location Protocol LPPa Protocol Data Unit PDU to the Enhanced Service Mobile Location Center E-SMLC before transmitting the handover command.
  • the above method can also have the following characteristics:
  • the information required for the positioning service includes one or more of positioning measurement information, terminal positioning capability information, and information for requesting or updating positioning assistance data.
  • the above method can also have the following characteristics:
  • the step of performing the processing of the location service according to the information required by the location service includes:
  • the E-SMLC ends the positioning process when performing subsequent positioning processing, or sends a positioning data request to restart the terminal positioning measurement process;
  • the LPP PDU received by the E-SMLC includes the terminal location capability information
  • the positioning method is selected to continue the positioning process.
  • the E-SMLC collects new positioning assistance data and sends the information to the terminal when performing subsequent positioning processing.
  • the E-SMLC resends the positioning assistance data to the terminal when performing subsequent positioning processing.
  • the above method can also have the following characteristics:
  • the terminal After the terminal completes the handover, the terminal sends the LPP PDU to the E-SMLC. After the terminal completes the handover, the LPP PDU is sent to the E-SMLC by using the following method:
  • the terminal controls the RRC uplink UL information transmission message by using a radio resource, and the LPP is
  • the PDU is sent to the target eNB
  • the target eNB transmits a message through the S1 application protocol S1AP uplink non-access stratum NAS, and transparently transmits the LPP PDU to the mobility management entity;
  • the mobility management entity passes the LPP PDU and the terminal identity to the E-SMLC.
  • the above method can also have the following characteristics:
  • the step of performing the processing of the positioning service according to the information required by the positioning service includes:
  • the E-SMLC determines to suspend transmission of positioning data, and the E-SMLC pauses to send positioning data to the source eNB and The terminal; and/or
  • the E-SMLC determines to collect positioning assistance data, and the E-SMLC continues to collect positioning assistance data, but does not send the positioning assistance data. ;
  • the method further includes:
  • the E-SMLC determines to suspend transmission of the positioning data
  • the positioning data is sent to the target eNB or the terminal to continue the positioning process
  • the above method can also have the following characteristics:
  • the source eNB constructs the LPPa PDU before transmitting the handover request, or before the source eNB receives the handover response after transmitting the handover request, or before the source eNB sends the handover command after receiving the handover response, through the SI
  • the application location report message is sent to the mobility control entity; the mobility control entity transparently transmits the received LPPa PDU to the E-SMLC.
  • the present invention further provides a positioning processing method for terminal handover in a long term evolution network, including:
  • the terminal performs the handover, and the enhanced service mobile location center E-SMLC receives the status update message sent by the mobility control entity indicating that the handover is complete, and the E-SMLC sends the data required to carry the location service to the terminal.
  • the Long Term Evolution Location Protocol LPP Protocol Data Unit PDU continues the positioning process.
  • the above method can also have the following characteristics:
  • the step of sending the LPP PDU to the terminal by the E-SMLC includes:
  • the E-SMLC sends, to the target eNB, a long-term evolution positioning protocol (LPPA) that carries data required for the positioning service, where the data required for the positioning service is request positioning assistance data or update positioning assistance data;
  • LPPA long-term evolution positioning protocol
  • the target eNB After receiving the LPPa PDU, the target eNB collects positioning assistance data according to the request carried in the update or the positioning assistance data, and sends the collected positioning assistance data to the E-SMLC through the LPPa PDU;
  • the E-SMLC sends the positioning assistance data to the terminal through the LPP PDU.
  • the present invention also provides an enhanced service mobile location center.
  • An E-SMLC where the E-SMLC is configured to receive a Long Term Evolution (LTE) protocol data unit sent by the terminal or the source evolved base station, and according to information required for the location service carried in the data unit of the Long Term Evolution (LTE) protocol, Performing the processing of the positioning service; or
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the terminal After receiving the status update message, the terminal sends a long-term evolution positioning protocol protocol data unit carrying the data required for the positioning service to the terminal, and continues the positioning process.
  • the above E-SMLC can also have the following characteristics:
  • the E-SMLC is a Long Term Evolution Location Protocol (LPP) Data Unit PDU that is configured to be sent by the receiving terminal.
  • LPP Long Term Evolution Location Protocol
  • the above E-SMLC can also have the following characteristics:
  • the E-SMLC is configured to receive a Long Term Evolution Location Protocol LPPa Protocol Data Unit (PDU) sent by the source evolved base station.
  • PDU Protocol Data Unit
  • the above E-SMLC can also have the following characteristics:
  • the E-SMLC is a Long Term Evolution Location Protocol LPP Protocol Data Unit PDU configured to transmit data required to carry a positioning service to a terminal.
  • the foregoing method and the E-SMLC are used for the UE or the UE-assisted positioning service to notify the E-SMLC of the positioning progress in the handover process through the LPP or LPPa protocol message notification. After the handover, the subsequent processing process is determined according to the positioning process. Maintain the continuity of the positioning business. BRIEF abstract
  • FIG. 2 is a flowchart of a process for maintaining continuity of a positioning service during handover according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a process for maintaining continuity of a positioning service during handover according to Embodiment 2 of the present invention
  • FIG. 5 is a flowchart of a process for maintaining the continuity of a positioning service during handover according to Embodiment 4 of the present invention
  • FIG. 6 is a flowchart of a process for maintaining continuity of a positioning service during handover according to Embodiment 5 of the present invention.
  • LPP LTE Positioning Protocol
  • LPPa LTE Positioning Protocol
  • the positioning data may be continuously transmitted to the UE during the handover process, but the implementation is complicated.
  • the present invention can maintain positioning continuity in the handover process by transmitting an LPP Protocol Data Unit (PDU) or an LPPa PDU for the UE or UE-assisted positioning service according to the concept of LTE simplification processing.
  • PDU LPP Protocol Data Unit
  • LPPa PDU LPPa PDU for the UE or UE-assisted positioning service according to the concept of LTE simplification processing.
  • the embodiments of the present invention are described by using the E-UTRAN internal inter-eNB handover procedure of the X2 interface shown in FIG. 1 as an example. However, all embodiments of the present invention are applicable to the handover procedure between all E-UTRAN internal eNBs. It is not limited to X2 interface switching, such as S1 interface.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the UE when a handover occurs, the UE sends an LPP PDU to notify an Enhanced Serving Mobile Location Center (E-SMLC), which is determined by the E-SMLC. Continue the positioning process or end the positioning process.
  • E-SMLC Enhanced Serving Mobile Location Center
  • Step 210 The source eNB sends a handover request to the target eNB.
  • Step 220 The target eNB determines that the handover can be continued, and sends a handover response to the source eNB, where the related information of the access target eNB, such as a new C-RNTI, target eNB security information, and random access parameters, is provided.
  • the related information of the access target eNB such as a new C-RNTI, target eNB security information, and random access parameters
  • Step 230 After receiving the handover response of the target eNB, the source eNB sends a handover command to the UE, where the new eNB carries the new C-RNTI, the target eNB security information, and the random access parameters.
  • Step 240 After receiving the handover command, the UE performs synchronization with the target eNB, and after successfully accessing the target cell, sends a handover complete message to the target eNB;
  • Step 250 If there is an ongoing positioning service based on the UE or the UE, the UE sends the LPP PDU to the E-SMLC, and the E-SMLC performs the subsequent positioning process after receiving the LPP PDU.
  • the specific steps include the following steps:
  • Step 2501 If there is an ongoing UE or UE-assisted positioning service, the UE constructs an LPP PDU, and sends the LPP PDU to the target eNB through an RRC UL Information Transfer message;
  • the LPP PDU carries one or more of positioning measurement information, terminal positioning capability information (such as a positioning method supported by the terminal), and requesting or updating the positioning assistance data. See the existing positioning process for details.
  • Step 2502 The target eNB passes the S1AP Uplink NAS Transport (SI application protocol).
  • SI application protocol S1AP Uplink NAS Transport
  • the link non-access layer transmits a message, and transparently transmits the LPP PDU to the MME;
  • Step 2503 The MME transmits the LPP PDU and the UE identifier (ID) to the E-SMLC. After the E-SMLC receives the LPP PDU, the terminal is connected to the target eNB, so the process is as follows:
  • the E-SMLC may decide to end the positioning process according to the positioning QoS, the positioning initiator, or the like, or send the positioning data request to restart the UE positioning measurement process, etc. .
  • the E-SMLC can select the positioning method in combination with the network positioning capability and the positioning QoS to perform the positioning process.
  • the E-SMLC may collect new positioning assistance data and send it to the UE according to different positioning methods when performing subsequent positioning processing; or Resend the positioning assistance data to the UE.
  • the continuity of the positioning process can be maintained after the UE handover; if the LPP PDU carries the positioning measurement information, the terminal positioning capability information, and requests or updates multiple types of positioning assistance data, the same is performed.
  • Step 260 The target eNB updates the bearer path with the MME, and the MME notifies the serving gateway of the new 7-carrier path.
  • Step 270 The target eNB sends a release resource message to the source eNB, requesting the source eNB to release related resources, such as the UE context, and the handover process ends.
  • Step 280 The MME sends a status update message to the E-SMLC to notify the E-SMLC that the handover is complete.
  • a system for implementing the long-term evolution network positioning service of the first embodiment includes a terminal and an enhanced service mobile location center (E-SMLC), where
  • the terminal is configured to perform the handover of the terminal in the process of the positioning service, and after the terminal completes the handover, the LPP PDU is constructed and sent to the E-SMLC, and the information required for the positioning service is carried in the LPP PDU;
  • the E-SMLC is configured to receive the LPP PDU sent by the terminal and carry it according to the LPP PDU.
  • the information required for the service is located and the subsequent processing of the location service is performed.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the UE or the UE assists the positioning service.
  • the source eNB determines to send the LPPa PDU to the E-SMLC through the source eNB before the UE sends the handover request to the target eNB after the handover, and the E-SMLC determines the positioning process. Or ending the positioning process; after the completion of the handover, the E-SMLC performs the continuation or the locating process according to the determined result, as shown in FIG. 3, which specifically includes the following steps:
  • Step 310 The source eNB determines that the UE is to perform eNB handover. If there is an ongoing UE-based or UE-assisted location service, the source eNB sends an LPPa PDU to notify the E-SMLC, and the E-SMLC determines the subsequent processing of the location service. Steps:
  • Step 3101 The source eNB determines that the UE is to perform the eNB handover, if there is a positioning service based on the UE or the UE, the source eNB constructs the LPPa PDU, and sends the message to the MME through the SI AP Location Reporting message.
  • the LPPa PDU includes one or more of positioning measurement information, terminal positioning capability information, requesting or updating positioning assistance data;
  • Step 3102 The MME transparently transmits the received LPPa PDU to the E-SMLC. After receiving the LPPa PDU, the E-SMLC determines whether to continue the positioning process or terminate the positioning process according to the positioning method and the positioning processing procedure. Is to suspend sending positioning data to the source eNB and the UE, or collecting positioning assistance data;
  • the E-SMLC determines to suspend the transmission of the positioning data, and the E-SMLC suspends transmitting the positioning data to the source eNB and the UE; if the LPPa PDU carries the request or update the positioning assistance Data, E-SMLC is determined to collect positioning assistance data, and the E-SMLC continues to collect positioning assistance data, but does not send;
  • Step 320 The source eNB sends a handover request to the target eNB.
  • Step 330 The target eNB determines that the handover can continue, and sends a handover response message to the source eNB, where the related information of the access target eNB, such as a new C-RNTI, target eNB security information, and random access parameters, is provided.
  • the related information of the access target eNB such as a new C-RNTI, target eNB security information, and random access parameters
  • Step 340 After receiving the handover response of the target eNB, the source eNB sends a handover command to the UE. And carrying the new C-RNTI, the target eNB security information, and the random access parameter, etc.; Step 350: After receiving the handover command, the UE performs synchronization with the target eNB, and after successfully accessing the target cell, sends a handover complete message to the target. eNB; during this period, the UE suspends and locates the related measurement reporting process;
  • Step 360 The target eNB updates the bearer path between the MME and the MME, and the MME notifies the service gateway of the new bearer path.
  • Step 370 The target eNB requests the source eNB to release related resources, such as the UE context, and the handover process ends.
  • Step 380 The MME sends a status update message to the E-SMLC, indicating that the handover is completed. After receiving the status update message, the E-SMLC continues to perform the positioning process according to the result determined in step 3102.
  • the positioning data may be sent to the target eNB or the UE to continue the positioning process.
  • the collected positioning assistance data may be sent to the target eNB or the UE at this time;
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the source eNB determines the UE handover and sends a handover request to the target eNB
  • the source eNB notifies the E-SMLC by using the LPPa PDU
  • the E-SMLC determines whether to continue the positioning process or terminate the positioning process.
  • the E-SMLC performs the positioning process or the positioning process according to the determined result, as shown in FIG.
  • the difference between this embodiment and the second embodiment is that the source eNB uses the LPPa PDU to notify the E-SMLC of different timings.
  • the other processing procedures are the same as those in the second embodiment, including the following steps:
  • Step 410 The source eNB sends a handover request to the target eNB.
  • Step 420 If there is an ongoing UE-based or UE-assisted positioning service, the source eNB sends an LPPa PDU to notify the E-SMLC, and the E-SMLC determines whether to continue the positioning process or end the positioning process.
  • Step 4201 After the source eNB sends a handover request to the target eNB, if there is a UE based or The UE-assisted positioning service, the source eNB constructs an LPPa PDU, and sends the LPPa PDU to the MME by using an SI AP Location Reporting message; and includes one or more of positioning measurement information, terminal positioning capability information, and request or update positioning assistance data.
  • Step 430 The target eNB determines that the handover can continue, and sends a handover response message to the source eNB, where the target eNB related information, such as a new C-RNTI, target eNB security information, and random access parameters, is provided.
  • the target eNB related information such as a new C-RNTI, target eNB security information, and random access parameters
  • Step 440 After receiving the handover response of the target eNB, the source eNB sends a handover command to the UE, where the new eNB carries the new C-RNTI, the target eNB security information, and the random access parameters.
  • Step 450 After receiving the handover command, the UE performs synchronization with the target eNB, and after successfully accessing the target cell, sends a handover complete message to the target eNB;
  • Step 460 The target eNB updates the bearer path with the MME, and the MME notifies the service gateway of the new bearer path.
  • Step 470 The target eNB requests the source eNB to release related resources, such as the UE context, and the handover process ends.
  • Step 480 The MME sends a status update message to the E-SMLC, indicating that the handover is completed.
  • the E-SMLC may, according to the result determined in step 4202, if it is determined to temporarily send the positioning data to the source eNB and the UE, then the positioning data may be sent to the target eNB or the UE to continue the positioning process;
  • the positioning assistance data may be sent, and the collected positioning assistance data may be sent to the target eNB or the UE at this time; or the positioning process is ended.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the source eNB after the source eNB determines the UE handover and sends the handover request to the target eNB, the source eNB notifies the E-SMLC by using the LPPa PDU after the source eNB receives the handover response of the target eNB.
  • the E-SMLC determines to perform the suspension of transmitting the positioning data to the source eNB, collects the positioning assistance data, or ends the positioning process according to requirements, and the specific process is as shown in the figure.
  • the difference between the embodiment and the embodiment 2 and the third embodiment is only the timing of the source eNB notifying the E-SMLC. The other processes are the same, and are not described here.
  • the source eNB is configured to: when the terminal performs the handover, the source eNB sends an LPPa PDU to the E-SMLC, which carries the information required for the location service, before sending the handover command.
  • the E-SMLC is configured to receive the LPPa PDU sent by the source eNB, and perform subsequent processing of the positioning service according to the information required to carry the positioning service in the LPPa PDU.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the E-SMLC For the positioning service based on the UE or the UE, after the E-SMLC receives the status update message of the MME, the E-SMLC actively sends the positioning assistance data to the UE, and continues the positioning process, as shown in FIG. Including the following steps:
  • Step 610-step 660 is the same as step 110-step 160, and is not described here;
  • Step 670 The MME sends a status update message to the E-SMLC, where the eNB carries the flag of the eNB, indicating that the handover is complete.
  • Step 680 After receiving the status update message of the MME, the E-SMLC triggers the positioning auxiliary data sending process.
  • the positioning assistance data transmission process is different for different positioning methods, including: If the positioning is global navigation satellite positioning system (GNSS), since the positioning assistance data does not need to be updated after the handover, the E-SMLC receives the MME to the status. After the update message, the positioning assistance data is directly sent to the UE;
  • GNSS global navigation satellite positioning system
  • the E-SMLC is updated when the positioning assistance data needs to be updated after the handover.
  • the target eNB or other entity capable of acquiring new positioning assistance data such as an OA&M (Operation and Maintenance Center), acquires new positioning assistance data, which is subsequently sent to the UE.
  • OA&M Operaation and Maintenance Center
  • Step 681 £-8 ⁇ constructs 1 ⁇ ?3?01;, which carries the request positioning assistance data, and sends the LPPa PDU to the target eNB to request positioning assistance data;
  • Step 682 After receiving the LPPa PDU, the target eNB collects the positioning assistance data according to the request to carry the positioning assistance data, and sends the collected positioning assistance data to the E-SMLC through the LPPa PDU.
  • Step 683 The E-SMLC sends the positioning assistance data to the UE through the LPP PDU.
  • the UE may report the measurement information to the switched cell according to the received positioning assistance data, thereby continuing the positioning process.
  • the system for implementing the long term evolution network positioning service of Embodiment 5 includes an MME and an E-SMLC, where:
  • the mobility control entity is configured to send a status update message to the E-SMLC after the handover is completed;
  • the E-SMLC is configured to send an LPP PDU carrying the data required for the positioning service to the terminal after receiving the status update message, and continue the positioning process.
  • the E-SMLC can notify the positioning progress in the handover process in time, and determine the subsequent processing according to the positioning process after the handover, and maintain the continuity of the positioning service. .
  • the present invention also provides an enhanced service mobile location center E-SMLC, where the E-SMLC is configured as a long-term evolution location protocol protocol data unit sent by a receiving terminal or a source evolved base station, and according to the foregoing long-term evolution positioning protocol protocol data.
  • the terminal After receiving the status update message, the terminal sends a long-term evolution positioning protocol protocol data unit carrying the data required for the positioning service to the terminal, and continues the positioning process.
  • the E-SMLC is configured to receive the Long Term Evolution Protocol LPP Protocol Data Unit PDU transmitted by the terminal.
  • the E-SMLC In order to receive information required for the location service from the source evolved base station, the E-SMLC is configured to receive the Long Term Evolution Location Protocol LPPa Protocol Data Unit PDU transmitted by the source evolved base station.
  • the E-SMLC In order to send the data required for the positioning service to the terminal, the E-SMLC is configured to send the Long Term Evolution Location Protocol (LPP) Data Unit PDU carrying the data required for the positioning service to the terminal.
  • LPP Long Term Evolution Location Protocol
  • the functions of the above E-SMLC are the same as those of the E-SMLC in the above system embodiment, and are not described here.
  • the foregoing E-SMLC can timely understand the positioning progress in the handover process through the Long Term Evolution (Positioning and Location Protocol) data unit, so that the positioning continuity can be maintained during the handover process; and after the handover, the subsequent processing process can be determined according to the positioning progress, and the maintenance process is maintained. Locate the continuity of the business.
  • the Long Term Evolution (Positioning and Location Protocol) data unit so that the positioning continuity can be maintained during the handover process; and after the handover, the subsequent processing process can be determined according to the positioning progress, and the maintenance process is maintained. Locate the continuity of the business.
  • the positioning processing method and the enhanced service mobile location center in the long-term evolution network provided by the present invention are provided, and the E-SMLC can be timely notified by the LPP or LPPa protocol message for the UE or UE-assisted positioning service.
  • the localization progress is known in the handover process, and after the handover, the subsequent processing is determined according to the positioning process, thereby maintaining the continuity of the positioning service.

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Abstract

本发明提供了一种长期演进网络中终端切换时的定位处理方法及增强型服务移动位置中心,该方法包括:在定位业务处理过程中终端发生切换,向增强型服务移动位置中心E-SMLC发送长期演进定位协议数据单元,在所述长期演进定位协议数据单元中携带所述定位业务所需的信息;以及所述E-SMLC收到所述长期演进定位协议数据单元后,根据所述定位业务所需的信息执行所述定位业务的处理。长期演进网络中终端切换时的定位处理方法及E-SMLC,针对基于UE或UE辅助的定位业务,通过LPP或LPPa协议消息通知,使得E-SMLC能及时地了解切换过程中定位进展,在切换后根据定位进程,决定后续处理过程,从而维持了定位业务的连续性。

Description

长期演进网络中终端切换时的定位处理方法及增强型服务移动位置中心
技术领域
本发明涉及长期演进 ( Long Term Evolution, LTE ) 网络的定位业务, 更 具体地说涉及 LTE网络中终端切换时的定位处理方法及增强型服务移动位置 中心。
背景技术
目前的移动通信技术面临着为用户提供更高的数据速率的问题, 需要为 网络提供更好的覆盖和更大的容量。 为了解决上述问题, 第三代合作伙伴计 划 ( 3rd Generation Partnership Project, 3 GPP )在 2004年 12月启动了无线接 入网 LTE, 演进的接入技术( Evolved-UTRA, E-UTRA )和演进的接入网络 ( Evolved-UTRAN, E-UTRAN ) , 以及面向全 IP 的分组域核心网演进项目 系统架构演进( System Architecture Evolution, SAE ) , 希望通过对无线接口 到核心网络的持续演进和增强, 为运营商和用户不断增长的需求提供更好的 支持, 从而在今后 10年甚至更长的时间, 一直保持在移动通信领域的技术先 发优势。
在 LTE定位过程中, 如果 UE位置移动发生切换时, E-UTRAN内部需 要进行一系列的消息交互完成切换。图 1所示为一个使用 X2接口的 E-UTRAN 内部演进基站(evolved NodeB, eNB ) 间切换的流程图, 包括如下步骤: 步骤 110: 源 eNB发送切换请求给目标 eNB;
步骤 120: 目标 eNB判断切换可以继续, 发送切换响应给源 eNB, 其中 提供目标 eNB 相关信息, 如新的小区级无线网络临时标识 (Cell- Radio Network Temporary Identifier, C-RNTI )、 目标 eNB安全信息和随机接入参数 等;
步骤 130: 源 eNB收到目标 eNB的切换响应后, 源 eNB发送切换命令给 终端( UE ) , 其中携带新的 C-RNTI、 目标 eNB安全信息和随机接入参数等; 步骤 140: UE收到切换命令后, 执行与目标 eNB的同步, 在成功接入目 标小区后, 发送切换完成消息给目标 eNB;
步骤 150: 目标 eNB更新与移动管理实体 ( Mobility Management Entity , ΜΜΕ ) 间承载路径, 同时 ΜΜΕ通知服务网关新的承载路径;
步骤 160: 目标 eNB发送释放资源消息给源 eNB, 请求源 eNB释放相关 资源如 UE上下文(context )等, 切换过程结束。
定位业务(LCS, Location Services )是移动通信网所提供的一种新型增 值业务。 该业务通过无线定位技术来获得终端的位置信息 (经纬度、 移动速 度等) , 并提供给终端、 移动通讯网络或者其它外部实体, 实现各种与位置 相关的业务。
目前的定位方法可以分为两大类,即基于网络的定位方法和 UE相关(基 于 UE或 UE辅助) 的定位方法; 其中, 基于网络的定位方法中, UE不参与 定位过程的定位信令交互, 由网络独立完成定位测量、 上报; UE相关即基于 UE或 UE辅助的定位方法中, UE参与到定位测量和上报过程, 如观察到达 时间差(OTDOA )定位方法。 终端可以通过对服务小区或相邻小区的信号进 行测量, 或者通过内置的定位模块对卫星信号进行测量, 以获得用于计算该 终端当前位置的数据。
在 LTE定位过程中, 如果 UE位置移动发生切换, 根据需求, 需要维持 定位业务的连续性。针对基于 UE及 UE辅助的定位,切换发生时定位业务的 连续性在当前协议中没有相关描述, 因此需要完善。
发明内容
本发明要解决的技术问题是提供长期演进网络中终端切换时的定位处理 方法及增强型服务移动位置中心, 能够在定位业务进行过程中 UE发生切换 时, 维持定位业务连续性。
为了解决上述问题, 本发明提供了一种长期演进网络中终端切换时的定 位处理方法, 包括:
在定位业务处理过程中终端发生切换, 所述终端或源演进基站 eNB向增 强型服务移动位置中心 E-SMLC发送长期演进定位协议协议数据单元, 在所 述长期演进定位协议数据单元中携带所述定位业务所需的信息; 以及 所述 E-SMLC收到所述长期演进定位协议数据单元后, 根据所述定位业 务所需的信息执行所述定位业务的处理。
相应地, 上述方法还可具有如下特点:
所述向增强型服务移动位置中心 E-SMLC发送长期演进定位协议协议数 据单元的步骤包括:
该终端完成切换后, 所述终端发送长期演进定位协议 LPP协议数据单元 PDU给增强型服务移动位置中心 E-SMLC; 或者
源演进基站 eNB 在发送切换命令前, 向增强型服务移动位置中心 E-SMLC发送长期演进定位协议 LPPa协议数据单元 PDU。
相应地, 上述方法还可具有如下特点:
所述定位业务所需的信息包括定位测量信息, 终端定位能力信息, 以及 请求或更新定位辅助数据的信息中的一种或多种。
相应地, 上述方法还可具有如下特点:
所述 E-SMLC收到所述长期演进定位协议协议数据单元后, 根据所述定 位业务所需的信息执行所述定位业务的处理的步骤包括:
所述 E-SMLC收到的所述 LPP PDU如果包含所述定位测量信息, 所述 E-SMLC在进行后续定位处理时, 结束定位过程, 或者发送定位数据请求重 新启动终端定位测量过程; 和 /或
所述 E-SMLC收到的所述 LPP PDU如果包含所述终端定位能力信息,
E-SMLC在进行后续定位处理时, 选择定位方法, 继续定位过程; 和 /或
所述 E-SMLC收到的所述 LPP PDU如果包含所述请求定位辅助数据的信 息, 所述 E-SMLC在进行后续定位处理时, 收集新的定位辅助数据, 发送给 所述终端; 和 /或
所述 E-SMLC收到的所述 LPP PDU如果包含所述更新定位辅助数据的信 息, 所述 E-SMLC在进行后续定位处理时, 重新发送定位辅助数据给所述终 端。 相应地, 上述方法还可具有如下特点:
在该终端完成切换后, 所述终端发送 LPP PDU给 E-SMLC的步骤中, 所述终端完成切换后, 通过以下方法将所述 LPP PDU发送到所述 E-SMLC:
所述终端通过无线资源控制 RRC上行链路 UL信息传输消息,将所述 LPP
PDU发给目标 eNB;
所述目标 eNB通过 S1应用协议 S1AP上行链路非接入层 NAS传送消息, 将所述 LPP PDU透传给移动管理实体;
所述移动管理实体将所述 LPP PDU和终端标识传给所述 E-SMLC。
相应地, 上述方法还可具有如下特点:
所述 E-SMLC收到所述长期演进定位协议数据单元后, 根据所述定位业 务所需的信息执行所述定位业务的处理的步骤包括:
如果所述 LPPa PDU携带的是所述定位测量信息或所述定位能力信息, 则所述 E-SMLC确定为暂停发送定位数据, 此时所述 E-SMLC暂停发送定位 数据给所述源 eNB和所述终端; 和 /或
如果所述 LPPa PDU携带的是所述请求或更新定位辅助数据, 所述 E-SMLC确定为收集定位辅助数据, 此时所述 E-SMLC继续收集定位辅助数 据, 但不发送所述定位辅助数据;
其中, 在根据所述定位业务所需的信息执行所述定位业务处理的步骤之 后, 所述方法还包括:
当切换完成后, 如果所述 E-SMLC确定为暂停发送定位数据, 则发送定 位数据给目标 eNB或所述终端, 继续定位过程; 和 /或
如果所述 E-SMLC确定为收集定位辅助数据, 则发送收集到的定位辅助 数据给目标 eNB或所述终端 UE; 或者
结束定位过程。
相应地, 上述方法还可具有如下特点:
在向增强型服务移动位置中心 E-SMLC发送 LPPa PDU的步骤中, 所述源 eNB在发送切换请求之前,或者所述源 eNB在发送切换请求之后 接收到切换响应之前, 或者所述源 eNB在接收到切换响应之后发送切换命令 之前,构建所述 LPPa PDU,通过 SI应用位置报告消息发送给移动控制实体; 所述移动控制实体将收到的所述 LPPa PDU透传给所述 E-SMLC。
为了解决上述问题, 本发明还提供了一种长期演进网络中终端切换时的 定位处理方法, 包括:
在定位业务处理过程中终端发生切换, 增强型服务移动位置中心 E-SMLC 收到移动控制实体发送来的表示切换完成的状态更新消息, 所述 E-SMLC向终端发送携带有定位业务所需数据的长期演进定位协议 LPP协议 数据单元 PDU, 继续定位过程。
相应地, 上述方法还可具有如下特点:
所述 E-SMLC向终端发送所述 LPP PDU的步骤包括:
所述 E-SMLC向目标 eNB发送携带有定位业务所需数据的长期演进定位 协议 LPPaPDU, 其中, 所述定位业务所需数据为请求定位辅助数据或更新定 位辅助数据;
所述目标 eNB收到所述 LPPa PDU后, 根据其中携带的请求或更新定位 辅助数据, 收集定位辅助数据, 并通过 LPPa PDU将收集到的定位辅助数据 发送给所述 E-SMLC; 以及
所述 E-SMLC通过所述 LPP PDU将定位辅助数据发送给终端。
为了解决上述问题, 本发明还提供了一种增强型服务移动位置中心
E-SMLC, 所述 E-SMLC设置为, 接收终端或源演进基站发送来的长期演进 定位协议协议数据单元, 并根据所述长期演进定位协议协议数据单元中携带 的定位业务所需的信息, 执行所述定位业务的处理; 或者
在收到状态更新消息后, 向终端发送携带有定位业务所需数据的长期演 进定位协议协议数据单元, 继续定位过程。
相应地, 上述 E-SMLC还可具有如下特点:
所述 E-SMLC是设置为接收终端发送来的长期演进定位协议 LPP协议数 据单元 PDU。 相应地, 上述 E-SMLC还可具有如下特点:
所述 E-SMLC是设置为接收源演进基站发送来的长期演进定位协议 LPPa 协议数据单元 PDU。
相应地, 上述 E-SMLC还可具有如下特点:
所述 E-SMLC是设置为向终端发送携带有定位业务所需数据的长期演进 定位协议 LPP协议数据单元 PDU。
上述方法和 E-SMLC针对基于 UE或 UE辅助的定位业务,通过上述 LPP 或 LPPa协议消息通知, 使 E-SMLC能及时了解切换过程中定位进展, 在切 换后根据定位进程, 决定后续处理过程, 维持了定位业务的连续性。 附图概述
图 1 是现有技术中切换处理流程图;
图 2 是本发明实施例一切换时维持定位业务连续性的处理流程图; 图 3 是本发明实施例二切换时维持定位业务连续性的处理流程图; 图 4 是本发明实施例三切换时维持定位业务连续性的处理流程图; 图 5 是本发明实施例四切换时维持定位业务连续性的处理流程图; 图 6是本发明实施例五切换时维持定位业务连续性的处理流程图。 本发明的较佳实施方式
为了支持定位业务, 在 LTE现有技术的基础上, 引入了新的协议: LTE 定位协议 LPP ( LTE Positioning Protocol, LPP )和 LPPa。 其中, LPP指 UE 和增强型移动位置服务中心 (E-SMLC )之间的定位传输协议; LPPa指 eNB 和 E-SMLC之间的定位传输协议。
基于 UE或 UE辅助的定位业务处理过程中,发生切换时,可以在切换过 程中续传定位数据给 UE, 但实现比较复杂。 本发明本着 LTE从简处理的理 念,针对基于 UE或 UE辅助的定位业务,通过发送 LPP协议数据单元( Protocol Data Unit, PDU )或 LPPa PDU, 能够在切换过程中维持定位连续性。 下面结合附图详细说明本发明的具体实施方式。
本发明的实施例均以如图 1所示的 X2接口的 E-UTRAN内部 eNB间切 换流程为例进行说明, 但本发明的全部实施例都适用于所有 E-UTRAN 内部 eNB间的切换流程, 并不限于 X2接口切换, 如还可以是 S1接口。
实施例一:
本实施例在基于 UE或 UE辅助的定位业务处理过程中, 当发生切换时, UE发送 LPP PDU通知增强型服务移动位置中心 (Enhanced Serving Mobile Location Center, E-SMLC ) , 由 E-SMLC确定执行继续定位过程或者结束定 位过程。 本实施例的切换过程中维持定位连续性的方案如图 2所示, 具体包 括以下步骤:
步骤 210: 源 eNB发送切换请求给目标 eNB;
步骤 220: 目标 eNB判断切换可以继续, 发送切换响应给源 eNB, 其中 提供接入目标 eNB的相关信息, 如新的 C-RNTI、 目标 eNB安全信息和随机 接入参数等;
步骤 230: 源 eNB收到目标 eNB的切换响应后, 发送切换命令给 UE, 其中携带新的 C-RNTI、 目标 eNB安全信息和随机接入参数等;
步骤 240: UE收到切换命令后, 执行与目标 eNB的同步, 在成功接入目 标小区后, 发送切换完成消息给目标 eNB;
步骤 250: 如果存在进行中的基于 UE或 UE辅助的定位业务, UE发送 LPP PDU给 E-SMLC , E-SMLC收到 LPP PDU后执行后续的定位处理过程; 具体包括如下步骤:
步骤 2501 : 如果存在进行中的基于 UE或 UE辅助的定位业务, UE构建 LPP PDU, 通过 RRC UL Information Transfer (无线资源控制上行链路信息传 输) 消息将该 LPP PDU发给目标 eNB;
其中, 该 LPP PDU中携带有定位测量信息, 终端定位能力信息(如终端 支持的定位方法等) , 请求或更新定位辅助数据中的一种或多种。 具体可参 见现有的定位流程。
步骤 2502: 目标 eNB通过 S1AP Uplink NAS Transport ( SI应用协议上 行链路非接入层传送) 消息, 将 LPP PDU透传给 MME;
步骤 2503: MME把 LPP PDU和 UE标识( ID )传给 E-SMLC, E-SMLC 收到 LPP PDU后 , 由于此时终端已经连接到目标 eNB , 因此处理如下:
如果收到的 LPP PDU包含定位测量信息, E-SMLC在进行后续定位处理 时, 可以根据定位 QoS、 定位发起方等, 决定结束定位过程, 或者发送定位 数据请求重新启动 UE定位测量过程, 等等。
如果收到的 LPP PDU包含终端定位能力信息, E-SMLC在进行后续定位 处理时, 可以结合网络定位能力、 此次定位 QoS等选择定位方法, 继续定位 过程。
如果收到的 LPP PDU 包含请求定位辅助数据或更新定位辅助数据的信 息, E-SMLC在进行后续定位处理时, 才艮据定位方法的不同, 可以收集新的 定位辅助数据, 发送给 UE; 或者重新发送定位辅助数据给 UE。
以上 E-SMLC进行的后续定位处理过程可以参见相应的定位处理流程。 通过以上处理, 可以在 UE切换后维持定位过程的连续性; 如果 LPP PDU中 携带有定位测量信息, 终端定位能力信息, 请求或更新定位辅助数据中的多 种时, 则同时执行。
步骤 260: 目标 eNB更新与 MME间承载路径, 同时 MME向服务网关 通知新的 7 载路径;
步骤 270: 目标 eNB向源 eNB发送释放资源消息,请求源 eNB释放相关 资源如 UE context等, 切换过程结束;
步骤 280: MME发送 status update (状态更新) 消息给 E-SMLC, 通知 E-SMLC切换完成。
用于实现实施例一长期演进网络定位业务的系统包括终端和增强型服务 移动位置中心 (E-SMLC), 其中,
终端设置为,在定位业务处理过程中该终端发生切换, 终端完成切换后, 构建 LPP PDU并发送给 E-SMLC, 在 LPP PDU中携带所述定位业务所需的 信息;
E-SMLC设置为,接收终端发送来的 LPP PDU, 并根据 LPP PDU中携带 定位业务所需的信息, 执行定位业务的后续处理。
实施例二:
本实施例基于 UE或 UE辅助的定位业务, 在切换过程中, 源 eNB判定 UE切换后给目标 eNB发送切换请求前, 通过源 eNB发送 LPPa PDU通知 E-SMLC , 由 E-SMLC 确定继续定位过程或结束定位过程; 当切换完成后 E-SMLC根据所确定的结果执行继续定位过程或结束定位过程, 如图 3所示, 具体包括如下步骤:
步骤 310: 源 eNB判定 UE要进行 eNB切换,如果存在进行中的基于 UE 或 UE辅助的定位业务, 源 eNB发送 LPPa PDU通知 E-SMLC, 由 E-SMLC 确定定位业务的后续处理; 具体包括如下步骤:
步骤 3101 : 源 eNB判断 UE要进行 eNB切换后, 如果存在基于 UE或 UE辅助的定位业务, 源 eNB构建 LPPa PDU, 通过 SI AP Location Reporting ( S1AP位置报告 ) 消息发送给 MME;
其中, 该 LPPa PDU中包括定位测量信息, 终端定位能力信息, 请求或 更新定位辅助数据中的一种或多种;
步骤 3102: MME将收到的 LPPa PDU透传给 E-SMLC, E-SMLC收到 LPPa PDU后, 根据定位方法及定位处理过程, 确定继续定位过程或结束定 位过程; 其中, 继续定位过程进一步可以是暂停发送定位数据给源 eNB 和 UE, 或者收集定位辅助数据;
如果 LPPa PDU携带的是定位测量信息或定位能力信息, E-SMLC确定 为暂停发送定位数据, 此时 E-SMLC暂停发送定位数据给源 eNB和 UE; 如果 LPPa PDU携带的是请求或更新定位辅助数据, E-SMLC确定为收 集定位辅助数据, 此时 E-SMLC继续收集定位辅助数据, 但不发送;
步骤 320: 源 eNB发送切换请求给目标 eNB;
步骤 330: 目标 eNB判断切换可以继续, 发送切换响应消息给源 eNB, 其中提供接入目标 eNB的相关信息, 如新的 C-RNTI、 目标 eNB安全信息和 随机接入参数等;
步骤 340: 源 eNB收到目标 eNB的切换响应后, 发送切换命令给 UE, 其中携带新的 C-RNTI、 目标 eNB安全信息和随机接入参数等; 步骤 350: UE收到切换命令后, 执行与目标 eNB的同步, 在成功接入目 标小区后, 发送切换完成消息给目标 eNB; 在此期间, UE暂停和定位相关的 测量上报过程;
步骤 360: 目标 eNB更新与 MME间承载路径, 同时 MME通知服务网 关新的承载路径;
步骤 370: 目标 eNB请求源 eNB释放相关资源如 UE context等, 切换过 程结束;
步骤 380: MME发送 status update消息给 E-SMLC, 表示切换完成。 当 E-SMLC收到 status update消息后, 根据步骤 3102所确定的结果继续执行定 位过程;
如果是暂停发送定位数据, 则此时可以发送定位数据给目标 eNB或 UE, 继续定位过程;
如果是收集定位辅助数据, 此时可以发送收集到的定位辅助数据给目标 eNB或 UE;
或者结束定位过程。
实施例三:
本实施例针对基于 UE或 UE辅助的定位业务, 在源 eNB判定 UE切换 并向目标 eNB发送切换请求后, 源 eNB利用 LPPa PDU通知 E-SMLC, 由 E-SMLC确定继续定位过程或结束定位过程, 在切换完成后, E-SMLC根据 确定的结果执行继续定位过程或结束定位过程, 如图 4所示。 本实施例与实 施例二的区别在于源 eNB利用 LPPa PDU通知 E-SMLC的时机不同 , 其他处 理流程同实施例二相同, 具体包括如下步骤:
步骤 410: 源 eNB发送切换请求给目标 eNB;
步骤 420: 如果存在进行中的基于 UE或 UE辅助的定位业务, 源 eNB 发送 LPPa PDU通知 E-SMLC, 由 E-SMLC确定继续定位过程或结束定位过 程; 具体包括:
步骤 4201 : 源 eNB发送切换请求给目标 eNB后, 如果存在基于 UE或 UE辅助的定位业务, 源 eNB构建 LPPa PDU, 通过 SI AP Location Reporting 消息将该 LPPa PDU发给 MME; 其中包括定位测量信息、 终端定位能力信息 和请求或更新定位辅助数据中的一种或多种; 步骤 4202: MME将收到的 LPPa PDU透传给 E-SMLC, E-SMLC收到 LPPa PDU后, 根据定位方法及定位处理过程, 确定继续定位过程或结束定 位过程; 其中, 继续定位过程可以是暂停发送定位数据给源 eNB和 UE或收 集定位辅助数据; 具体的执行过程参见步骤 3102;
步骤 430: 目标 eNB判断切换可以继续, 发送切换响应消息给源 eNB, 其中提供目标 eNB相关信息, 如新的 C-RNTI、 目标 eNB安全信息和随机接 入参数等;
步骤 440: 源 eNB收到目标 eNB的切换响应后, 发送切换命令给 UE, 其中携带新的 C-RNTI、 目标 eNB安全信息和随机接入参数等;
步骤 450: UE收到切换命令后, 执行与目标 eNB的同步, 在成功接入目 标小区后, 发送切换完成消息给目标 eNB;
步骤 460: 目标 eNB更新与 MME间承载路径, 同时 MME通知服务网 关新的承载路径;
步骤 470: 目标 eNB请求源 eNB释放相关资源如 UE context等, 切换过 程结束。
步骤 480: MME发送 status update 消息给 E-SMLC, 表示切换完成。 E-SMLC收到 status update消息后, 根据步骤 4202确定的结果, 如果确定为 暂停发送定位数据给源 eNB和 UE, 则此时可以发送定位数据给目标 eNB或 UE, 继续定位过程; 如果是收集定位辅助数据, 此时可以发送收集到的定位 辅助数据给目标 eNB或 UE; 或者结束定位过程。
实施例四:
本实施例基于 UE或 UE辅助的定位业务, 在源 eNB判定 UE切换, 发 送切换请求给目标 eNB后, 当源 eNB收到目标 eNB的切换响应后, 源 eNB 利用 LPPa PDU通知 E-SMLC, 由 E-SMLC判断确定执行暂停发送定位数据 给源 eNB, 收集定位辅助数据, 或者根据需求结束定位过程, 具体过程如图 5所示, 本实施例同实施例二和实施例三的区别仅仅是源 eNB通知 E-SMLC 的时机不同, 其它处理过程相同, 此处不再赘述。
用于实现实施例二、三和四的长期演进网络定位业务的系统,包括源 eNB 和 E-SMLC, 其中:
源 eNB设置为,在定位业务处理过程中终端发生切换, 源 eNB在发送切 换命令前, 向 E-SMLC发送 LPPa PDU, 其中携带定位业务所需的信息;
E-SMLC设置为, 接收源 eNB发送来的 LPPa PDU, 并根据 LPPa PDU 中携带定位业务所需的信息, 执行定位业务的后续处理。
实施例五:
本实施例为针对基于 UE或 UE辅助的定位业务,在 E-SMLC收到 MME 的 status update消息后, 由 E-SMLC主动发送定位辅助数据给 UE, 继续定位 过程, 如图 6所示, 具体包括如下步骤:
步骤 610-步骤 660同步骤 110-步骤 160, 此处不在赘述;
步骤 670: MME发送 status update消息给 E-SMLC , 其中携带 eNB切换 标志位, 表示切换完成;
步骤 680: E-SMLC收到 MME的 status update消息后, 触发定位辅助数 据发送过程;
其中, 定位辅助数据发送过程对于不同的定位方法有所不同, 包括: 如果是全球导航卫星定位系统( GNSS )定位, 由于切换后定位辅助数据 不需要更新, 因此 E-SMLC在收到 MME到 status update消息后,直接发送定 位辅助数据给 UE;
如果是下行定位方法如 OTDOA (观察到达时间差)或其它定位方法, 如在 UE计算定位结果的 E-CID (增强式蜂窝小区识别定位) , 在切换后定 位辅助数据需要更新时, E-SMLC从目标 eNB或者其它能够获取新的定位辅 助数据的实体如 OA&M (操作维护中心)处获取新的定位辅助数据, 后续发 送给 UE。
以 OTDOA定位方法为例, 从目标 eNB请求定位辅助数据流程如下: 步骤 681 : £-8 〇构建1^?3 ?01;, 其中携带请求定位辅助数据, 并将 该 LPPa PDU发送给目标 eNB , 请求定位辅助数据;
步骤 682: 目标 eNB收到 LPPa PDU后, 根据其中携带的请求定位辅助 数据, 收集定位辅助数据, 并通过 LPPa PDU将收集到的定位辅助数据发送 给 E-SMLC。
步骤 683: E-SMLC通过 LPP PDU将定位辅助数据发送给 UE。
此时, UE可以根据收到的定位辅助数据, 对切换后的小区测量后, 上报 测量信息, 从而继续了定位过程。
用于实现实施例五的长期演进网络定位业务的系统包括 MME 和 E-SMLC, 其中:
移动控制实体设置为, 在切换完成后向 E-SMLC发送状态更新消息;
E-SMLC设置为, 在收到状态更新消息后, 向终端发送携带有定位业务 所需数据的 LPP PDU, 继续定位过程。
针对基于 UE或 UE辅助的定位业务,通过上述 LPP或 LPPa协议消息通 知, E-SMLC 能及时了解切换过程中定位进展, 在切换后根据定位进程, 决 定后续处理过程, 维持了定位业务的连续性。
本发明还提供了一种增强型服务移动位置中心 E-SMLC, 上述 E-SMLC 设置为, 接收终端或源演进基站发送来的长期演进定位协议协议数据单元, 并根据上述长期演进定位协议协议数据单元中携带的定位业务所需的信息, 执行上述定位业务的处理; 或者
在收到状态更新消息后, 向终端发送携带有定位业务所需数据的长期演 进定位协议协议数据单元, 继续定位过程。
为了接收来自终端的定位业务所需的信息, 上述 E-SMLC是设置为接收 终端发送来的长期演进定位协议 LPP协议数据单元 PDU。
为了接收来自源演进基站的定位业务所需的信息, 上述 E-SMLC是设置 为接收源演进基站发送来的长期演进定位协议 LPPa协议数据单元 PDU。
为了向终端发送定位业务所需数据, 上述 E-SMLC是设置为向终端发送 携带有定位业务所需数据的长期演进定位协议 LPP协议数据单元 PDU。 上述 E-SMLC的功能与上述系统实施例中的 E-SMLC的功能相同, 在此 不赘述。
上述 E-SMLC通过长期演进定位协议协议数据单元能够及时地了解切换 过程中的定位进展, 从而可以在切换过程中维持定位连续性; 也可以在切换 后根据定位进展, 决定后续处理过程, 维持了定位业务的连续性。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性 本发明提供的长期演进网络中终端切换时的定位处理方法及增强型服务 移动位置中心, 针对基于 UE或 UE辅助的定位业务, 通过 LPP或 LPPa协议 消息通知, 使得 E-SMLC能及时地了解切换过程中定位进展, 在切换后根据 定位进程, 决定后续处理过程, 从而维持了定位业务的连续性。

Claims

权 利 要 求 书
1、 一种长期演进网络中终端切换时的定位处理方法, 包括:
在定位业务处理过程中终端发生切换, 所述终端或源演进基站 eNB向增 强型服务移动位置中心 E-SMLC发送长期演进定位协议协议数据单元, 在所 述长期演进定位协议数据单元中携带所述定位业务所需的信息; 以及
所述 E-SMLC收到所述长期演进定位协议数据单元后, 根据所述定位业 务所需的信息执行所述定位业务的处理。
2、 如权利要求 1 所述的方法, 其中, 所述终端或源演进基站 eNB 向 E-SMLC发送长期演进定位协议协议数据单元的步骤包括:
该终端完成切换后, 所述终端发送长期演进定位协议 LPP协议数据单元
PDU给增强型服务移动位置中心 E-SMLC; 或者
源演进基站 eNB 在发送切换命令前, 向增强型服务移动位置中心 E-SMLC发送长期演进定位协议 LPPa协议数据单元 PDU。
3、 如权利要求 2所述的方法, 其中,
所述定位业务所需的信息包括定位测量信息, 终端定位能力信息, 以及 请求或更新定位辅助数据的信息中的一种或多种。
4、如权利要求 3所述的方法, 其中, 所述 E-SMLC收到所述长期演进定 位协议协议数据单元后, 根据所述定位业务所需的信息执行所述定位业务的 处理的步骤包括:
所述 E-SMLC收到的所述 LPP PDU如果包含所述定位测量信息, 所述
E-SMLC在进行后续定位处理时, 结束定位过程, 或者发送定位数据请求重 新启动终端定位测量过程; 和 /或
所述 E-SMLC收到的所述 LPP PDU如果包含所述终端定位能力信息, E-SMLC在进行后续定位处理时, 选择定位方法, 继续定位过程; 和 /或
所述 E-SMLC收到的所述 LPP PDU如果包含所述请求定位辅助数据的信 息, 所述 E-SMLC在进行后续定位处理时, 收集新的定位辅助数据, 发送给 所述终端; 和 /或 所述 E-SMLC收到的所述 LPP PDU如果包含所述更新定位辅助数据的信 息, 所述 E-SMLC在进行后续定位处理时, 重新发送定位辅助数据给所述终 端。
5、 权利要求 2或 3或 4所述的方法, 其中, 在该终端完成切换后, 所述 终端发送 LPP PDU给 E-SMLC的步骤中,
所述终端完成切换后, 通过以下方法将所述 LPP PDU发送到所述 E-SMLC:
所述终端通过无线资源控制 RRC上行链路 UL信息传输消息,将所述 LPP PDU发给目标 eNB;
所述目标 eNB通过 S1应用协议 S1AP上行链路非接入层 NAS传送消息, 将所述 LPP PDU透传给移动管理实体; 以及
所述移动管理实体将所述 LPP PDU和终端标识传给所述 E-SMLC。
6、如权利要求 3所述的方法, 其中, 所述 E-SMLC收到所述长期演进定 位协议数据单元后, 根据所述定位业务所需的信息执行所述定位业务的处理 的步骤包括:
如果所述 LPPa PDU携带的是所述定位测量信息或所述定位能力信息, 则所述 E-SMLC确定为暂停发送定位数据, 此时所述 E-SMLC暂停发送定位 数据给所述源 eNB和所述终端; 和 /或
如果所述 LPPa PDU携带的是所述请求或更新定位辅助数据, 所述 E-SMLC确定为收集定位辅助数据, 此时所述 E-SMLC继续收集定位辅助数 据, 但不发送所述定位辅助数据;
其中, 在根据所述定位业务所需的信息执行所述定位业务处理的步骤之 后, 所述方法还包括:
当切换完成后, 如果所述 E-SMLC确定为暂停发送定位数据, 则发送定 位数据给目标 eNB或所述终端, 继续定位过程; 和 /或
如果所述 E-SMLC确定为收集定位辅助数据, 则发送收集到的定位辅助 数据给目标 eNB或所述终端 UE; 或者
结束定位过程。
7、 如权利要求 2或 3或 6所述的方法, 其中, 在向增强型服务移动位置 中心 E-SMLC发送 LPPa PDU的步骤中 ,
所述源 eNB在发送切换请求之前,或者所述源 eNB在发送切换请求之后 接收到切换响应之前, 或者所述源 eNB在接收到切换响应之后发送切换命令 之前,构建所述 LPPa PDU,通过 S1应用位置报告消息发送给移动控制实体; 所述移动控制实体将收到的所述 LPPa PDU透传给所述 E-SMLC。
8、 一种长期演进网络中终端切换时的定位处理方法, 包括:
在定位业务处理过程中终端发生切换, 增强型服务移动位置中心 E-SMLC 收到移动控制实体发送来的表示切换完成的状态更新消息, 所述 E-SMLC向终端发送携带有定位业务所需数据的长期演进定位协议 LPP协议 数据单元 PDU, 继续定位过程。
9、 如权利要求 8所述的方法, 其中, 所述 E-SMLC向终端发送所述 LPP PDU的步骤包括:
所述 E-SMLC向目标 eNB发送携带有定位业务所需数据的长期演进定位 协议 LPPaPDU, 其中, 所述定位业务所需数据为请求定位辅助数据或更新定 位辅助数据;
所述目标 eNB收到所述 LPPa PDU后, 根据其中携带的请求或更新定位 辅助数据, 收集定位辅助数据, 并通过 LPPa PDU将收集到的定位辅助数据 发送给所述 E-SMLC; 以及
所述 E-SMLC通过所述 LPP PDU将定位辅助数据发送给终端。
10、 一种增强型服务移动位置中心 E-SMLC, 所述 E-SMLC设置为, 接 收终端或源演进基站发送来的长期演进定位协议协议数据单元, 并根据所述 长期演进定位协议协议数据单元中携带的定位业务所需的信息, 执行所述定 位业务的处理; 或者
在收到状态更新消息后, 向终端发送携带有定位业务所需数据的长期演 进定位协议协议数据单元, 继续定位过程。
11、如权利要求 10所述的 E-SMLC, 所述 E-SMLC是设置为接收终端发 送来的长期演进定位协议 LPP协议数据单元 PDU。
12、如权利要求 10所述的 E-SMLC, 所述 E-SMLC是设置为接收源演进 基站发送来的长期演进定位协议 LPPa协议数据单元 PDU。
13、如权利要求 10所述的 E-SMLC, 所述 E-SMLC是设置为向终端发送 携带有定位业务所需数据的长期演进定位协议 LPP协议数据单元 PDU。
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