WO2012027971A1 - 向移动终端发送定位请求的方法及系统、定位平台 - Google Patents

向移动终端发送定位请求的方法及系统、定位平台 Download PDF

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Publication number
WO2012027971A1
WO2012027971A1 PCT/CN2011/070046 CN2011070046W WO2012027971A1 WO 2012027971 A1 WO2012027971 A1 WO 2012027971A1 CN 2011070046 W CN2011070046 W CN 2011070046W WO 2012027971 A1 WO2012027971 A1 WO 2012027971A1
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WO
WIPO (PCT)
Prior art keywords
mobile terminal
signaling
positioning
request
terminal
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Application number
PCT/CN2011/070046
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English (en)
French (fr)
Inventor
洪骏
叶松青
袁俊
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012027971A1 publication Critical patent/WO2012027971A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for transmitting a location request to a mobile terminal, and a positioning platform.
  • a location-based service also referred to as a mobile location service or a location service, refers to a mobile network acquiring geographic location information (latitude and longitude coordinates) of a mobile terminal through a specific positioning technology, and providing the same to a mobile user. I, communication system or third party.
  • the positioning technology can be divided into a user plane (User-Plane) positioning technology and a control plane (Control-Plane) positioning technology.
  • the user plane positioning technology mainly implements message stream transmission through an IP connection in a Packet-Switching (PS) domain; the control plane positioning technology mainly uses circuit switching.
  • PS Packet-Switching
  • the signaling link of the domain implements the transmission of the message stream.
  • the common positioning methods of the user plane are the Secure User Plane Location (SUPL) technology and the gpsOne positioning technology proposed by the Open Mobile Alliance (OMA).
  • the common positioning method of the control plane includes: Any Time Interrogation (ATI) signaling, providing user location (provenSubscriberLocation, referred to as PSL) in the 3rd Generation Partnership Project (3GPP) network. Signaling, providing user information (Provide Subscriberlnformation, abbreviated as PSI) signaling.
  • ATI Time Interrogation
  • PSL ProvenSubscriberLocation
  • 3GPP 3rd Generation Partnership Project
  • PSI Public Subscriberlnformation
  • FIG. 1 is a network structure diagram of a SUPL positioning platform in a 3GPP network according to the prior art. As shown in FIG.
  • the method for sending a SUPL INIT message by the SLP is as follows: The first type, the SLP encapsulates the SUPL INIT message through the Wireless Application Protocol (WAP), and then pushes the Push Proxy Gateway (PPG); and then sends the WAP PUSH message to the terminal (
  • the SUPL Enabled Terminal referred to as SET
  • the Push Access Protocol PAP
  • the SLP sends a short message to the mobile terminal through the Short Message Service Center (SMSC).
  • SMSC Short Message Service Center
  • MT SMS Short Message Peer to Peer
  • SMPP Short Message Peer to Peer
  • the terminal status is normal, you can only passively wait for the connection timeout. If the SUPL INIT message is sent if the terminal status is abnormal (such as shutdown, roaming, out of service area, etc.), system resources will be wasted. In addition, since the number of terminals currently supporting the SUPL protocol is limited, most terminals do not have the SUPL capability, and thus cannot be further located, and only failure processing can be performed.
  • the hybrid positioning of the related art especially the hybrid positioning of the user plane high-precision positioning platform, is to perform an abnormal process to obtain a coarse positioning result when the AGPS positioning fails or the terminal uplink response message is not received.
  • the main object of the present invention is to provide a method and system for transmitting a location request to a mobile terminal, and a positioning platform. To solve the above problems.
  • a method of transmitting a location request to a mobile terminal is provided.
  • the method for sending a location request to a mobile terminal includes: the positioning platform sends a request signaling to a home location register of the mobile terminal, where the request signaling includes signaling for requesting to query status information of the mobile terminal; the positioning platform returns according to the home location register The status information determines whether the status of the mobile terminal is normal. When the status of the mobile terminal is normal, the positioning platform sends a secure user plane positioning SUPL request to the mobile terminal through the mobile switching center where the mobile terminal is located.
  • the foregoing request signaling further includes signaling for requesting to query the mobile switching center information where the mobile terminal is located
  • the positioning platform sending the secure user plane positioning SUPL request to the mobile terminal by using the mobile switching center where the mobile terminal is located includes: The mobile switching center sends signaling carrying the secure user plane positioning initialization message; the mobile switching center sends the secure user plane positioning initialization message to the mobile terminal.
  • the method further includes: establishing, by the mobile terminal, a link with the positioning platform, so that the positioning platform locates the location of the mobile terminal.
  • the foregoing request signaling further includes signaling for requesting to query the cell information in which the mobile terminal is located.
  • the method further includes: the cell information that the positioning platform returns to the mobile terminal where the home location register is located. Sent to the requester.
  • the method further includes: the positioning platform determining, according to the signaling response returned by the home location register, whether the data age of the cell information exceeds a predetermined period; the data age of the cell information If the period exceeds the predetermined period, the positioning platform sends signaling for querying the cell information to the home location register again; the positioning platform updates the location information of the mobile terminal according to the signaling response returned by the home location register.
  • the status information of the mobile terminal includes information indicating that the mobile terminal is in one of the following states: a normal state, a shutdown state, an out of service state, and a roaming out service zone state, wherein the shutdown state, the out of service state, and roaming
  • the out of service area status indicates that the mobile terminal is in an abnormal state.
  • the system for transmitting a location request to a mobile terminal includes: a home location register of the mobile terminal, a positioning platform, and a mobile switching center where the mobile terminal is located, where the positioning platform is configured to send request signaling to the home location register of the mobile terminal, where The request signaling includes signaling to request querying status information of the mobile terminal; the home location register is used to return status information to the positioning platform; and the positioning platform is further configured to move through the mobile terminal if the state of the mobile terminal is normal
  • the switching center sends a secure user plane positioning SUPL request to the mobile terminal.
  • a positioning platform is provided.
  • the positioning platform includes: a first sending module, configured to send request signaling to a home location register of the mobile terminal, where the request signaling includes signaling for requesting to query status information of the mobile terminal; The status information returned by the home location register determines whether the state of the mobile terminal is normal.
  • the second sending module is configured to send the secure user plane location SUPL to the mobile terminal by using the mobile switching center where the mobile terminal is located when the state of the mobile terminal is normal. request.
  • the request signaling further includes signaling for requesting to query the mobile switching center information where the mobile terminal is located, and the second sending module is further configured to send, by the mobile switching center, signaling that carries the secure user plane positioning initialization message.
  • the foregoing request signaling further includes signaling for requesting to query the cell information in which the mobile terminal is located
  • the positioning platform further includes: a second determining module, configured to determine, according to the signaling response returned by the home location register, the data age of the cell information Whether the predetermined period is exceeded, wherein, in a case that the data age of the cell information exceeds the predetermined period, the first sending module sends the signaling for querying the cell information to the home location register again; and the updating module is configured to return according to the home location register The signaling response updates the location information of the mobile terminal.
  • FIG. 1 is a network structure diagram of a SUPL positioning platform in a 3GPP network according to the related art
  • FIG. 2 is a flowchart of a method for transmitting a positioning request to a mobile terminal according to an embodiment of the present invention
  • 2a is a flowchart of a positioning method for transmitting a positioning request to a mobile terminal according to the first embodiment of the present invention
  • FIG. 2b is a flowchart of a positioning method for transmitting a positioning request to a mobile terminal according to the second embodiment of the present invention
  • Figure 5 is a flow chart of a preferred embodiment of a method for locating a mobile terminal according to an embodiment of the present invention
  • Figure 6 is a schematic diagram of a positioning platform according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. 2 is a flow chart of a method for a mobile terminal to send a location request to a mobile terminal according to an embodiment of the present invention. As shown in FIG.
  • the method includes the following steps (step S12 to step S16):
  • Step S12 The positioning platform sends request signaling to a home location register of the mobile terminal, where the request signaling includes requesting to query the mobile terminal. Signaling of status information.
  • the request signaling may further include signaling requesting to query mobile switching center information where the mobile terminal is located.
  • Step S14 The positioning platform determines whether the state of the mobile terminal is normal according to the status information returned by the home location register.
  • Step 4 gathers S 16, in the case that the state of the mobile terminal is normal, the positioning platform sends a secure user plane positioning SUPL request to the mobile terminal through the mobile switching center where the mobile terminal is located.
  • the positioning platform may further query the location information of the mobile terminal to the mobile switching center by using the mobile switching center information where the mobile terminal returned by the home location register to achieve more precise positioning of the mobile terminal.
  • the request signaling may further include signaling for requesting to query the cell information in which the mobile terminal is located. If the state of the mobile terminal is abnormal, the positioning platform sends the cell information of the mobile terminal returned by the home location register to the requester ( That is, the party that requests the mobile terminal is requested, so that the positioning of the mobile terminal can be realized even when the state of the mobile terminal is abnormal.
  • 2a is a flowchart of a positioning method for transmitting a positioning request to a mobile terminal according to the first embodiment of the present invention. As shown in FIG.
  • the method includes the following steps (S102 to S108): Step S102, positioning platform Sending request signaling to a home location register of the mobile terminal, wherein the request signaling is used to query status information of the mobile terminal, cell information in which the mobile terminal is located, and mobile switching center information in which the mobile terminal is located.
  • the above request signaling may be a random query ATI signaling.
  • Step S104 The positioning platform receives the signaling response from the home location register, where the signaling response includes status information of the mobile terminal, cell information where the mobile terminal is located, and mobile switching center information where the mobile terminal is located.
  • the method further includes: determining, by the positioning platform, whether the data age of the cell information exceeds a predetermined period; and if the data age of the cell information exceeds a predetermined period, positioning The platform sends the random query ATI signaling to the home location register again; the signaling response returned by the location platform in the home location register updates the location information of the mobile terminal.
  • Step S106 The location information of the mobile terminal determines whether the state of the mobile terminal is normal. If the determination result is yes, step S108 is performed, and if the determination result is negative, step 4 is performed. 110. Step S108: If the status of the mobile terminal is abnormal, the positioning platform sends the cell information where the mobile terminal is located to the content provider.
  • Step S110 if the state of the mobile terminal is normal, the positioning platform resides in the mobile terminal.
  • the mobile switching center information is located to query the mobile switching center for location information of the mobile terminal, and sends the location information to the content provider. Locating the location information of the mobile terminal to the mobile switching center according to the information about the mobile switching center where the mobile terminal is located may include: the positioning platform sends the signaling carrying the secure user plane positioning initialization message to the mobile switching center; the mobile switching center The secure user plane positioning initialization message is sent to the mobile terminal; and the mobile terminal establishes a link with the positioning platform to enable the positioning platform to locate the location of the mobile terminal.
  • step S201 to step S205 is a flowchart of a positioning method for transmitting a positioning request to a mobile terminal according to a second embodiment of the present invention.
  • the positioning method provided by the embodiment of the present invention mainly includes the following steps (step S201 to step S205):
  • the SLP For the location type initiated by the network, before sending the SUPL INIT message, the SLP sends a time inquiry (ATI) request signaling to the terminal home location register (HLR); requesting to return the terminal status, the cell in which the cell is located Information and mobile switching center information.
  • ATI time inquiry
  • HLR terminal home location register
  • the SLP sends a signaling to the mobile switching center according to the obtained information, where the signaling carries the SUPL INIT message, and the mobile switching center sends the SUPL INIT message to the terminal to be located, and activates the terminal to connect to the terminal.
  • SLP open the SUPL positioning interaction process.
  • the mobile switching center may be a Mobile Switch Center (MSC) or a Visitor Location Register (VLR). Specifically, the SLP obtains an ATI request from the HLR.
  • MSC Mobile Switch Center
  • VLR Visitor Location Register
  • the terminal status is obtained; if the terminal is in an abnormal state (including: shutdown, out of service area, or roaming out of the service area), the SLP can only passively wait for the terminal connection to time out, in order to avoid the meaningless waiting of the SLP in this case.
  • the SLP determines that the current state of the terminal is an abnormal state according to the state information returned by the HLR, the SLP prohibits sending the signaling carrying the SUPL INIT message to the mobile switching center, and ends the SUPL positioning process of the terminal.
  • the base station database (BaseStaion Database, BSDB for short) is obtained according to the cell information, and the location result is returned, and a rough position result is returned to the external client;
  • BSDB BaseStaion Database
  • the positioning platform After receiving the SUPL INIT message, if the terminal capability supports the SUPL protocol, Sending a message to the SLP, establishing a connection with the SLP, if the terminal establishes a connection with the SLP, the positioning platform interacts with the terminal, performs AGPS positioning and calculation, and obtains the location information of the terminal. After the SLP obtains the location information of the terminal, Returning the location information of the terminal to the external client that initiates the location request. Specifically, if the signaling of carrying the SUPL INIT message fails, or the terminal does not have the SUPL capability, or the terminal fails to establish a connection with the SLP, or performs AGPS The positioning and calculation failed. At this time, the SUPL positioning will fail and the terminal location information cannot be obtained.
  • the SLP determines whether to perform the step according to the length of the cell information data in the ATI response in the step S201. If the age of the cell information in the ATI signaling response is short, the location data is sufficiently new, and the step is not performed. If the cell information data in the above ATI signaling response is older, the location data is relatively old; while the mobile positioning center sends the SUPL INIT message, the terminal to be located has completed paging, so the mobile positioning center has the latest The location update result, at this time, this step is performed, and the ATI signaling request is sent again to obtain the most recently updated location result, wherein the step is optional.
  • the positioning platform sends a secure user plane positioning SUPL request to the mobile terminal to perform accurate positioning, in the case that the positioning terminal determines that the mobile terminal is normal, in the mobile switching center where the mobile terminal is located. Rough when the mobile terminal is abnormal
  • the positioning avoids sending a secure user plane positioning SUPL request in case of abnormality of the mobile terminal, thereby reducing the waste of network resources and solving the problem that the positioning time of the mobile terminal is relatively long and the failure rate is relatively high, thereby enabling Enables fast and efficient positioning of mobile terminals.
  • FIG. 3 is a flowchart of positioning a mobile terminal when the terminal is in an abnormal state according to an embodiment of the present invention. As shown in FIG. 3, the process of positioning the terminal mainly includes the following steps (step S301 to step S304). ):
  • a content provider sends a Mobile Location Protocol (MLP) request to the SUPL positioning platform (SLP), and requests the positioning terminal to perform SUPL AGPS positioning; S302, SLP is to be located.
  • MLP Mobile Location Protocol
  • the home location register (HLR) of the terminal sends the ATI request signaling; specifically, the ATI request signaling is used to query the status of the terminal to be located, the cell information, and the mobile switching center information;
  • the HLR returns the mobile switching center information and the cell information where the terminal to be located is located in the ATI signaling response, and indicates the current state of the terminal.
  • the current location of the to-be-located terminal may be any of the following: : Shut down, or not in the service area or roam out of the service area.
  • the returned cell information refers to the cell information where the terminal is at the critical point when the terminal is changed from the normal state to the abnormal state, and the critical time point is recorded, and the current time is subtracted. The above critical time gives the data age of the cell information.
  • the SLP determines that the current state of the terminal to be located cannot perform SUPL positioning, but obtains cell information when the terminal is in a normal state. Specifically, if the data age meets the requirement for location aging in the MLP positioning request, the SLP queries the base station database. (BSDB) acquiring the latitude and longitude information corresponding to the cell and returning to the CP, and indicating the data age of the positioning result and acquiring by the cell mode; if the data age does not meet the requirement for the location aging in the MLP positioning request, returning the response of the positioning failure to CP, the process ends.
  • BSDB base station database
  • the SUPL AGPS method is not applicable, and the SUPL process is ended to avoid invalid waiting when the user is in a pure user condition.
  • the method for processing the current state of the located terminal in an abnormal situation can effectively control the sending of the SUPL INIT message, reduce the burden of the useless message on the network, and also obtain the position of the terminal when it is in the normal state. information.
  • the process of positioning the terminal mainly includes the following steps (step S401 to step S410): S401, the CP sends an MLP request to the SLP, and requests the positioning terminal to perform SUPL AGPS positioning;
  • the SLP sends an ATI request signaling to the HLR, and queries the status of the terminal to be located, the cell information, and the information of the mobile switching center.
  • the SLP is connected from the HLR to the ATI signaling response, the response message indicates that the terminal is normal, and returns the mobile switching center information where the terminal to be located is currently located, and returns the cell information and data finally registered by the terminal in the mobile switching center.
  • the SLP sends the MT Forward SM signaling to the mobile switching center where the terminal to be located is currently located, where the signaling carries the SUPL INIT code stream.
  • the mobile switching center delivers the MT Forward SM signaling carrying the SUPL INIT code stream to the to-be-located terminal, and activates the terminal to be located to connect to the SLP to start the SUPL AGPS positioning process.
  • the mobile switching center returns a response message sent by the MT Forward SM signaling, indicating that the MT Forward SM signaling carrying the SUPL INIT code stream has been sent to the terminal;
  • the SLP determines the age of the cell information data in the ATI signaling response, and if it is relatively old, initiates ATI request signaling to the HLR to query the recently updated cell information. If it is newer, skip this step; specifically, since the mobile switching center has completed paging in the process of delivering MT Forward SM signaling, the MSC/VLR has the latest location update result, and the control plane is located. The process only needs to use the ATI signaling without the Current Location identifier to quickly obtain the cell information currently in the terminal from the HLR, and does not trigger the MSC to additionally page the user.
  • the SLP receives the ATI signaling response returned from the HLR, and the response message has the latest cell information of the terminal;
  • the terminal to be located opens the SUPL positioning interaction after receiving the SUPL INIT message. Specifically, the terminal establishes a link with the SLP and sends a SUPL POS INIT message (ie, a SUPL POS INIT message); the terminal to be located and the SLP perform a user plane-based message interaction, that is, perform SUPL POS interaction, and the SLP is acquired in the process.
  • a SUPL POS INIT message ie, a SUPL POS INIT message
  • SLP sends a positioning end message (SUPL END) to the terminal to release the resource, and ends the SUPL positioning process.
  • the step 4 is initiated by the terminal to initiate and interact with the SLP, and there is no time sequence between the S406, S407, and S408.
  • the user plane message interaction has no control plane signaling interaction. Therefore, for a complete SUPL interaction flow, its end time must be after step S408.
  • FIG. 5 is a flowchart of a preferred embodiment of a positioning method of a mobile terminal according to an embodiment of the present invention.
  • the processing of various anomalies is covered, and the timer setting is increased in order to satisfy the requirement that the CP returns the timeliness of the positioning result.
  • the detailed processing procedure for positioning the terminal mainly includes the following steps (step S501 to step S514):
  • the CP sends an MLP request to the SLP, and requests the positioning terminal to perform SUPL AGPS positioning.
  • the timer T1 of the positioning session is set. Specifically, after the SLP receives the MLP request, the timer T1 of the total time control of the positioning process is set, and once the timer time is found in the entire positioning service flow, the MLP response is returned to the CP, and the process ends. Due to control plane signaling, ATI's transmission and reception time is much smaller than the user plane.
  • the SLP waits for the terminal to establish a connection timeout, or the AGPS session is not completed or the terminal does not reply to the SUPL POS message, the SLP can still obtain the ATI positioning result; therefore, the SLP ends the positioning process when the timer T1 arrives. Returns the positioning result of the ATI method to the CP. In this way, the time requirement of the CP to return the positioning result can be satisfied, the waiting time is reduced, and the user experience is improved.
  • the SLP sends an ATI request signaling to the HLR, and queries the status of the terminal to be located, the cell information, and the mobile switching center information.
  • S503 The SLP receives the ATI signaling response from the HLR, and the response message indicates the current status information of the terminal and the mobile switching center information where the terminal to be located is currently located, and returns the cell information and the data age of the last registration of the terminal in the mobile switching center.
  • the current location of the to-be-located terminal may be any one of the following: normal, shutdown, or out of service area or roaming out of the service area.
  • S504 The SLP determines whether the current state of the terminal is normal.
  • the SLP query base station database obtains the latitude and longitude information corresponding to the cell and returns it to the CP, and indicates the data age of the positioning result. Obtained by the cell mode; if the data age does not meet the requirements for location aging in the MLP positioning request, the response to the positioning failure is returned to the CP, and the process ends. If the terminal status is normal, the process proceeds to step S505.
  • the SLP sends the MT Forward SM signaling to the mobile switching center where the terminal to be located is currently located, where the signaling carries the SUPL INIT code stream.
  • the MSC processes the paging of the terminal, and delivers MT Forward SM signaling carrying the SUPL INIT code stream to the terminal.
  • the MSC may query the VLR for terminal information, including whether the terminal is reachable or the like; the VLR sends a paging request to the MSC, requesting to establish a wireless connection; the MSC sends a paging message to the terminal; the terminal paging succeeds, and enters the access procedure; Notifying the VLR that the paging is successful, the VLR completes the operations of authentication, location update, encryption, etc., and notifies the MSC that the access is successful; the MSC sends an access confirmation message to the terminal; the MSC forwards the MT short message to the terminal, carrying the SUPL INIT code stream; The MSC returns a response message that the short message was successfully received. Further, if the terminal fails to correctly receive the MT short message due to insufficient memory of the terminal, congestion of the communication network, etc., the MSC also notifies the SLP by the VLR
  • the SLP receives a response sent by the MT Forward SM signaling message from the MSC.
  • the SLP obtains, from the foregoing response, an indication of whether the terminal successfully receives the MT short message. Specifically, if the terminal fails to receive the MT short message, that is, the SUPL INIT fails to be delivered, the SUPL positioning process cannot be started; if the terminal successfully receives the MT short message carrying the SUPL INIT code stream, waiting for step S52 to occur, step 4 S52 is initiated by the terminal, and the SLP is passively waiting.
  • the SLP obtains cell information and data age from the ATI signaling response. Specifically, if the age is sufficiently new (the old and new judgments can be quantized by setting a specific value, such as within 60 seconds), there is no need to resend the ATI request signaling again, and the process proceeds to step S512; if the age is not new enough (such as Before 60 seconds), enter step 4 to gather S510.
  • the SLP sends the ATI request signaling without the Current Location identifier to the HLR.
  • the MSC/VLR since the paging terminal is completed in the process of delivering the MT Forward SM signaling, the MSC/VLR has the latest location update.
  • the control plane positioning process only needs to use the ATI signaling without the Current Location identifier to quickly obtain the cell information currently in the terminal from the HLR, and does not trigger the MSC to additionally page the user.
  • the SLP receives an ATI signaling response message of the HLR, and obtains information about the cell that is recently updated by the terminal after paging.
  • step S52 is also in progress, the SLP is waiting for the terminal to establish a connection, and once the terminal and the SLP connection are successfully established, the SUPL interaction positioning process is started.
  • the SUPL interaction message is sent and received based on the packet switched domain (PS) channel.
  • PS packet switched domain
  • the MS sends a SUPL POS INIT message; the MS performs a user plane-based message interaction with the SLP, that is, performs SUPL POS interaction, in which the SLP and the MS provide and acquire auxiliary information, and complete the positioning calculation process of the terminal; Upon completion, the SLP sends a SUPL END message to the terminal to release the resource and end the location process.
  • S512 After obtaining the nearest location cell of the terminal by using the control plane ATI signaling manner, the SLP determines whether the MT short message carrying the SUPL INIT code stream is successfully sent.
  • step S52 is being performed at this time, that is, the SUPL positioning process is started, and the SUPL interaction process is ended or the set positioning session timer T1 is reached, and the process proceeds to step S513; if the MT is short If the message fails to be sent, it indicates that the SUPL interaction has not been initiated, and the process proceeds to step S51.
  • the positioning session timer T1 set by the S501 or the SUPL interaction ends, it is determined whether the SUPL positioning successfully acquires the location result. Specifically, if the user plane SUPL locates the location result successfully, the process proceeds to step S515. If the user plane SUPL positioning interaction is not supported by the terminal, or the terminal establishes a connection timeout, or the AGPS session is not completed, or the terminal does not reply to the SUPL message, or the auxiliary information is insufficient, the positioning calculation fails, or is set. After the positioning session timer T1 arrives, the SUPL interaction has not ended yet, and jtb proceeds to step 4 to S514.
  • the hybrid positioning of the processing terminal When the hybrid positioning of the processing terminal is used in the processing terminal, the high-precision positioning of the user plane and the coarse positioning of the control plane are simultaneously performed, thereby avoiding the trial-and-error mode of the control plane when the high-precision positioning mode of the user plane fails.
  • the long timeout waits, and when the third party initiates the request on the network side, if the time response time of the positioning result is high, the demand can also be met.
  • the SLP queries the base station database BSDB according to the cell information in the ATI signaling response to obtain the latitude and longitude result of the location.
  • S515 the SLP returns an MLP positioning result response to the CP, and the location result indicates that the source is from the SUPL high-precision positioning or the cell coarse positioning, that is, the control plane ATI positioning result, and indicates the generation time of the location result.
  • the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein.
  • the positioning platform includes a first sending module 602, a first determining module 604, and a second sending module 606.
  • the first sending module 602 is configured to send request signaling to the home location register of the mobile terminal, where the request signaling includes signaling for requesting to query status information of the mobile terminal, and the first determining module 604 is configured to use the home location register.
  • the returned status information determines whether the status of the mobile terminal is normal.
  • the second sending module 606 is configured to send a secure user plane positioning SUPL request to the mobile terminal by using the mobile switching center where the mobile terminal is located if the status of the mobile terminal is normal.
  • the foregoing request signaling further includes signaling for requesting to query the mobile switching center information where the mobile terminal is located, and the second sending module 606 is further configured to send, by the mobile switching center, signaling that carries the secure user plane positioning initialization message.
  • the foregoing request signaling may further include: requesting to query the signaling of the cell information in which the mobile terminal is located, where the positioning platform may further include: a second determining module, configured to determine, according to the signaling response returned by the home location register, the cell information Whether the age exceeds a predetermined period, wherein, in a case that the data age of the cell information exceeds a predetermined period, the first sending module sends the random query ATI signaling to the home location register again; and an update module, configured to return according to the home location register The signaling response updates the location information of the mobile terminal.
  • the embodiment of the present invention further provides a positioning system for a mobile terminal, where the positioning system of the mobile terminal includes a home location register of the mobile terminal, a positioning platform, a mobile switching center where the mobile terminal is located, and a content provider, wherein the positioning platform, Sending request signaling to a home location register of the mobile terminal, the request signaling includes signaling requesting to query status information of the mobile terminal; the home location register is used to return status information to the positioning platform; and the positioning platform is further used for moving When the state of the terminal is normal, the secure user plane positioning SUPL request is sent to the mobile terminal through the mobile switching center where the mobile terminal is located.
  • the positioning system of the mobile terminal includes a home location register of the mobile terminal, a positioning platform, a mobile switching center where the mobile terminal is located, and a content provider, wherein the positioning platform, Sending request signaling to a home location register of the mobile terminal, the request signaling includes signaling requesting to query status information of the mobile terminal; the home location register is used to return status information to the
  • the current state of the terminal and the cell information are queried through the ATI signaling.
  • the SLP can directly end the SUPL positioning process without passive waiting.
  • the terminal connection is timed out, thereby avoiding the SLP meaningless waiting, and also providing a cell-precision location data.
  • the control plane can be played. The advantage of timely transmission is avoided, the problem of SUPL INIT message transmission delay is avoided, and the dependency of SUPL positioning is reduced.
  • the ATI positioning of the control plane without the Current Location identifier is optionally performed to obtain the latest updated cell information of the terminal, which is used when the AGPS fails or takes too long.
  • the AGPS positioning process can be ended midway to provide a cell-precision location data; thereby improving the SLP positioning service capability and enhancing the operator's competitiveness.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

本发明公开了一种向移动终端发送定位请求的方法及系统、定位平台。其中,该向移动终端发送定位请求的方法包括:定位平台向移动终端的归属位置寄存器发送请求信令,其中,请求信令包括请求查询移动终端的状态信息的信令;定位平台根据归属位置寄存器返回的状态信息判断移动终端的状态是否正常;在移动终端的状态正常的情况下,定位平台通过移动终端所处的移动交换中心向移动终端发送安全用户平面定位请求。通过本发明,能够减少网络资源的浪费。

Description

向移动终端发送定位请求的方法及系统、 定位平台 技术领域 本发明涉及通信领域, 具体而言, 涉及一种向移动终端发送定位请求的 方法及系统、 定位平台。 背景技术 基于位置的业务 ( Location Based Services, 简称为 LBS ), 又称移动位 置业务或定位业务, 是指移动网络通过特定的定位技术获取移动终端的地理 位置信息 (经纬度坐标), 提供给移动用户本人、 通信系统或第三方。 具体地, 按照定位流程中消息^载层面的不同, 定位技术可以分为用户 平面 (User-Plane ) 定位技术和控制平面 (Control-Plane ) 定位技术。 其中, 用户平面定位技术主要是通过分组交换 ( Packet-Switching, 简称为 PS )域的 IP连接实现消息流的传输; 控制平面定位技术主要是通过电路交换
( Circuit-Switching, 简称为 CS ) 域的信令链路实现消息流的传输。 用户平面常用的定位方法主要有开放式移动联盟( Open Mobile Alliance, 简称为 OMA )提出的安全用户平面定位 ( Secure User Plane Location , 简称 为 SUPL )技术以及 gpsOne定位技术。 控制平面常用的定位方法在第三代移动通讯计划 ( 3rd Generation partnership project, 简称为 3GPP ) 网络中包括: 随时查询 ( Any Time Interrogation, 简称为 ATI )信令、 提供用户位置 ( ProvideSubscriberLocation, 简称为 PSL )信令、 提供用户信息 (ProvideSubscriberlnformation, 简称为 PSI )信令。 目前, 在 3GPP网络中基于用户平面的定位方法 SUPL AGPS ( Assisted GPS ), 在网络侧第三方发起网络初始化 (Network Initiated, 简称为 NI ) 请 求时,通过 SUPL定位平台( SUPL Location Platform,简称为 SLP )发送 SUPL INIT消息来触发手机终端启动 SUPL交互¾¾程。 具体地, 图 1是才艮据现有技术中 3GPP网络中的 SUPL定位平台所处的 网络结构图, 如图 1所示, 根据 OMA规范, 上述 SLP发送 SUPL INIT消息 的方法有:^下两种: 第一种, SLP通过无线应用通讯协议 ( Wireless Application Protocol , 简 称为 WAP )封装 SUPL INIT消息后推送代理网关 ( Push Proxy Gateway, 简 称为 PPG;), 再由其发送 WAP PUSH消息至终端 ( SUPL Enabled Terminal, 简称为 SET ), SLP与 WAP PPG之间釆用推送访问协议( Push Access Protocol, 简称为 PAP )。 第二种, SLP通过短消息月艮务中心 (Short Message Service Center, 简称 为 SMSC )发送移动终端短消息月艮务 ( Mobile Terminated Short Message
Service,简称为 MT SMS )至终端, SLP与 SMSC之间釆用短消息点对点( Short Message Peer to Peer, 简称为 SMPP ) 十办议。 在上述的发送 SUPL INIT消息方法中, 由于 WAP PPG和 SMSC均不能 对 SUPL INIT消息进行实时发送, 而必须和其他普通短消息一样排队发送, 从而导致在艮多时候 SLP已经等待终端连接超时,终端才收到 SUPL INIT消 息, 在这种情况下, 如果终端再向 SLP建立链接不但会失败, 而且还会造成 额外的网络连接负担, 进而易引起用户投诉; 并且通过这两种发送方法 SLP 均不能获知终端状态是否正常, 只能被动等待连接超时, 如果在终端状态不 正常 (如: 关机、 漫游、 不在服务区等) 的情况下发送了 SUPL INIT消息, 则将造成系统资源的浪费。此外, 由于目前支持 SUPL协议的终端数量有限, 从而导致大多数的终端不具备 SUPL能力, 因而也不能对其进行进一步的定 位, 只能进行失败处理。 相关技术的混合定位, 尤其是用户面高精度定位平台的混合定位, 是在 AGPS定位失败, 或者是没有收到终端上行响应消息的情况下, 才执行异常 流程, 获取较粗的定位结果的。 这是一种典型的试错处理方式, 需要较长的 超时等待时间, 一般为 30到 60秒左右, 这样整个完成定位的时间 4艮长, 即 使是相对于正常的 AGPS定位一般也需要 20秒左右的完成时间, 相对而言 也 4艮长, 用户感受明显不好。 因此, 目前在网络侧第三方发起 NI请求时, 若请求参数中对定位结果响应时间及时性要求较高, 则无法满足用户需求。 根据上述描述可知, 现有相关技术中不能对 SUPL INIT消息进行实时发 送、 也不能在 SUPL INIT消息发送之前对终端状态进行必要的判断, 从而导 致定位失败率高、 系统和网络资源浪费等问题; 同时在网络侧第三方发起 NI 请求时, 无法满足对定位结果响应时间的及时性要求。 发明内容 针对相关技术中对移动终端进行定位时网络资源浪费比较严重的问题而 提出本发明, 为此, 本发明的主要目的在于提供一种向移动终端发送定位请 求的方法及系统、 定位平台, 以解决上述问题。 为了实现上述目的, 才艮据本发明的一个方面, 提供了一种向移动终端发 送定位请求的方法。 该向移动终端发送定位请求的方法包括: 定位平台向移 动终端的归属位置寄存器发送请求信令, 其中, 该请求信令包括请求查询移 动终端的状态信息的信令; 定位平台根据归属位置寄存器返回的状态信息判 断移动终端的状态是否正常; 在移动终端的状态正常的情况下, 定位平台通 过移动终端所处的移动交换中心向移动终端发送安全用户平面定位 SUPL请 求。 进一步地, 上述请求信令还包括请求查询移动终端所处的移动交换中心 信息的信令, 定位平台通过移动终端所处的移动交换中心向移动终端发送安 全用户平面定位 SUPL请求包括: 定位平台向移动交换中心发送携带有安全 用户平面定位初始化消息的信令; 移动交换中心将安全用户平面定位初始化 消息发送给移动终端。 进一步地, 在定位平台通过移动终端所处的移动交换中心向移动终端发 送安全用户平面定位 SUPL请求之后, 还包括: 移动终端与定位平台建立链 接以使定位平台对移动终端的位置进行定位。 进一步地, 上述请求信令还包括请求查询移动终端所处的小区信息的信 令, 在移动终端的状态异常的情况下, 还包括: 定位平台将归属位置寄存器 返回的移动终端所处的小区信息发送给请求者。 进一步地, 在定位平台获取移动终端所处的小区信息之后, 该方法还包 括: 定位平台根据归属位置寄存器返回的信令响应判断小区信息的数据龄期 是否超过预定期限; 在小区信息的数据龄期超过预定期限的情况下, 定位平 台再次向归属位置寄存器发送查询小区信息的信令; 定位平台根据归属位置 寄存器返回的信令响应更新移动终端的位置信息。 进一步地, 移动终端的状态信息包括用于指示移动终端处于以下状态之 一的信息: 正常状态、 关机状态、 不在服务区状态、 漫游出服务区状态, 其 中, 关机状态、 不在服务区状态、 漫游出服务区状态指示移动终端处于异常 状态。 为了实现上述目的, 根据本发明的另一方面, 提供了一种向移动终端发 送定位请求的系统。 该向移动终端发送定位请求的系统包括: 移动终端的归 属位置寄存器、 定位平台、 移动终端所处的移动交换中心, 其中, 定位平台 用于向移动终端的归属位置寄存器发送请求信令, 其中, 请求信令包括请求 查询移动终端的状态信息的信令; 归属位置寄存器用于向定位平台返回状态 信息; 以及定位平台还用于在移动终端的状态正常的情况下, 通过移动终端 所处的移动交换中心向移动终端发送安全用户平面定位 SUPL请求。 为了实现上述目的, 根据本发明的另一方面, 提供了一种定位平台。 该 定位平台包括: 第一发送模块, 用于向移动终端的归属位置寄存器发送请求 信令, 其中, 该请求信令包括请求查询移动终端的状态信息的信令; 第一判 断模块, 用于根据归属位置寄存器返回的状态信息判断移动终端的状态是否 正常; 第二发送模块, 用于在移动终端的状态正常的情况下, 通过移动终端 所处的移动交换中心向移动终端发送安全用户平面定位 SUPL请求。 进一步地, 上述请求信令还包括请求查询移动终端所处的移动交换中心 信息的信令, 第二发送模块还用于移动交换中心发送携带有安全用户平面定 位初始化消息的信令。 进一步地, 上述请求信令还包括请求查询移动终端所处的小区信息的信 令, 定位平台还包括: 第二判断模块, 用于根据归属位置寄存器返回的信令 响应判断小区信息的数据龄期是否超过预定期限, 其中, 在小区信息的数据 龄期超过预定期限的情况下, 第一发送模块再次向归属位置寄存器发送查询 小区信息的信令; 以及更新模块, 用于根据归属位置寄存器返回的信令响应 更新移动终端的位置信息。 通过本发明, 釆用上述提供的移动终端的定位方法及系统, 解决了相关 技术中对移动终端进行定位时网络资源浪费比较严重的问题, 进而达到了减 少网络资源浪费的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据相关技术中 3GPP网络中的 SUPL定位平台所处的网络结构 图; 图 2是才艮据本发明实施例的向移动终端发送定位请求的方法的流程图; 图 2a是 居本发明第一实施例的向移动终端发送定位请求的定位方法 的流程图; 图 2b是 居本发明第二实施例的向移动终端发送定位请求的定位方法 的流程图;
定位的流程图;
位的流程图; 图 5是本发明实施例的移动终端的定位方法的优选实施例的流程图; 图 6是根据本发明实施例提供的定位平台的示意图。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 图 2是才艮据本发明实施例的移动终端的向移动终端发送定位请求的方法 的流程图。 如图 2所示, 该方法包括如下步骤 (步骤 S 12至步骤 S 16 ): 步骤 S 12, 定位平台向移动终端的归属位置寄存器发送请求信令, 其中, 该请求信令包括请求查询移动终端的状态信息的信令。 优选地, 上述请求信令还可以包括请求查询移动终端所处的移动交换中 心信息的信令。 步骤 S 14, 定位平台才艮据归属位置寄存器返回的状态信息判断移动终端 的状态是否正常。 步 4聚 S 16, 在移动终端的状态正常的情况下, 定位平台通过移动终端所 处的移动交换中心向移动终端发送安全用户平面定位 SUPL请求。 在移动终端的状态正常的情况下, 定位平台还可以 居归属位置寄存器 返回的移动终端所处的移动交换中心信息向移动交换中心查询移动终端的位 置信息以实现对移动终端的更精确定位。 上述请求信令还可以包括请求查询移动终端所处的小区信息的信令, 在 移动终端的状态异常的情况下, 定位平台将归属位置寄存器返回的移动终端 所处的小区信息发送给请求者(即, 请求对移动终端进行定位的一方), 从而 在移动终端状态异常的情况下, 也可以实现对移动终端的定位。 在该实施例中, 由于定位平台在接收到归属位置寄存器返回的移动终端 状态信息之后, 根据该状态信息判断移动终端的状态是否正常, 并且在移动 终端正常的情况下, 才向移动终端所处的移动交换中心向移动终端发送安全 用户平面定位 SUPL请求, 从而能够避免在移动终端异常的情况下, 发送安 全用户平面定位 SUPL请求, 因而, 通过该实施例, 能够降低网络资源的浪 费。 图 2a是 居本发明第一实施例的向移动终端发送定位请求的定位方法 的流程图, 如图 2a所示, 该方法包括如下步骤 (S 102至步骤 S 108 ): 步骤 S 102,定位平台向移动终端的归属位置寄存器发送请求信令,其中, 该请求信令用于查询移动终端的状态信息、 移动终端所处的小区信息以及移 动终端所处的移动交换中心信息。 上述请求信令可以为随机查询 ATI信令。 步骤 S 104, 定位平台接收来自归属位置寄存器的信令响应, 其中, 信令 响应包括移动终端的状态信息、 移动终端所处的小区信息以及移动终端所处 的移动交换中心信息。 其中, 在定位平台接收来自归属位置寄存器的信令响应之后, 上述方法 还包括: 定位平台判断小区信息的数据龄期是否超过预定期限; 在小区信息 的数据龄期超过预定期限的情况下, 定位平台再次向归属位置寄存器发送随 机查询 ATI信令; 定位平台 居归属位置寄存器返回的信令响应更新移动终 端的位置信息。 步骤 S 106,该定位平台 居移动终端的状态信息判断该移动终端的状态 是否正常; 在判断结果为是的情况下, 执行步骤 S 108, 在判断结果为否的情 况下, 执行步 4聚 S 110。 步骤 S 108, 在移动终端的状态异常的情况下, 定位平台将该移动终端所 处的小区信息发送给内容提供商; 步骤 S 110, 在移动终端的状态正常的情况下, 定位平台 居移动终端所 处的移动交换中心信息向移动交换中心查询该移动终端的位置信息, 并将位 置信息发送给内容提供商。 定位平台才艮据移动终端所处的移动交换中心信息向移动交换中心查询移 动终端的位置信息可以包括: 定位平台向移动交换中心发送携带有安全用户 平面定位初始化消息的信令; 移动交换中心将安全用户平面定位初始化消息 发送给移动终端; 以及移动终端与定位平台建立链接以使定位平台对移动终 端的位置进行定位。 图 2b是 居本发明第二实施例的向移动终端发送定位请求的定位方法 的流程图; 如图 2b所示, 本发明实施例提供的定位方法主要包括以下步骤 (步骤 S201至步骤 S205 ):
S201 , 对于网络始发的定位类型, 在下发 SUPL INIT消息前, SLP向终 端归属位置寄存器 ( Home Location Register, 简称为 HLR )发送随时查询 ( ATI ) 请求信令; 要求返回终端状态、 所处小区信息以及移动交换中心信 息。
S203 , SLP才艮据获取到的移动交换中心信息, 向其发送信令, 其中该信 令中携带有 SUPL INIT消息,移动交换中心将此 SUPL INIT消息发送给待定 位终端, 激活该终端连接至 SLP, 开启 SUPL定位交互流程。 在具体应用中, 移动交换中心可以为移动交互中心 ( Mobile Switch Center, 简称为 MSC ), 也可以为访问用户位置寄存器 ( Visitor Location Register,简称为 VLR )„ 具体地, SLP从 HLR获取到 ATI请求的响应后, 得到终端状态; 若终 端处于非正常状态 (包括: 关机、 不在服务区域或漫游出服务区) 时, SLP 只能被动等待终端连接超时, 为了避免这种情况下 SLP的无意义等待, 在本 发明实施例中, 如果 SLP根据 HLR返回的状态信息确定该终端的当前状态 为非正常状态,则 SLP禁止向移动交换中心发送携带 SUPL INIT消息的信令, 结束上述终端的 SUPL定位流程, 由于从 ATI响应中获取到终端所处的小区 信息, 才艮据小区信息查询基站数据库 (BaseStaion Database, 简称为 BSDB ) 获取到位置结果, 向外部客户端返回一个较为粗略的位置结果; 只有在待定 位的终端当前状态为正常的情况下, SLP才会向移动交换中心发送上述信令。 在移动交换中心接收到上述信令后, 移动交换中心将 SUPL INIT消息发 送给终端,终端接收到该 SUPL INIT消息后,如果终端能力支持 SUPL协议, 则向 SLP发送消息, 与 SLP建立连接, 如果终端与 SLP建立连接成功, 则 定位平台与终端交互, 进行 AGPS的定位和计算, 获取该终端的位置信息。 SLP在获取到终端的位置信息后, 将该终端的位置信息返回给发起定位请求 的外部客户端。 具体地, 如果上述携带 SUPL INIT消息的信令发送失败, 或终端不具备 SUPL能力, 或终端与 SLP建立连接失败, 或在进行 AGPS的定位和计算失 败, 此时 SUPL定位将会失败, 无法获取到终端位置信息。
S205 , SLP根据 S201步骤中 ATI响应中小区信息数据龄期的长短决定 是否执行本步骤; 如果上述 ATI信令响应中小区信息数据龄期较短, 说明位 置数据足够新, 此时不执行本步骤; 如果上述 ATI信令响应中小区信息数据 龄期较长, 说明位置数据比较陈旧; 而移动定位中心在下发 SUPL INIT消息 的过程中, 待定位终端已经完成寻呼, 因此在移动定位中心有最新的位置更 新结果, 此时执行本步骤, 再次发送 ATI信令请求以获取最近更新的位置结 果, 其中, 该步骤为可选的。 在上述移动终端定位方法的实施例中, 由于定位平台在判断出移动终端 正常的情况下, 才向移动终端所处的移动交换中心向移动终端发送安全用户 平面定位 SUPL请求以进行精确定位, 在移动终端异常的情况下进行粗略的 定位,避免了在移动终端异常的情况下,发送安全用户平面定位 SUPL请求, 从而既减少了网络资源的浪费, 又解决了对移动终端进行定位时间比较长且 失败率比较高的问题, 进而能够实现快速、 高效地对移动终端进行定位。 图 3是才艮据本发明实施例的终端处于非正常状态时对移动终端进行定位 的流程图,如图 3所示,对该终端进行定位的处理过程主要包括以下步骤(步 骤 S301至步骤 S304 ):
S301 , 内容提供商 ( Content Provider, 简称为 CP ) 发送移动定位协议 ( Mobile Location Protocol, 简称为 MLP ) 请求至 SUPL定位平台 ( SLP ), 请求对待定位终端进行 SUPL AGPS定位; S302, SLP向待定位终端的归属位置寄存器 (Home Location Register, 简称为 HLR )发送 ATI请求信令; 具体地, 上述 ATI请求信令用于查询待定位终端的状态、 小区信息以及 移动交换中心信息;
5303 , HLR在 ATI信令响应中返回待定位终端所处的移动交换中心信息 以及小区信息, 并指示终端当前所处的状态; 具体地, 上述待定位终端当前所处状态可为以下任一项: 关机, 或不在 服务区或漫游出服务区。 进一步地, 当待定位终端处于上述非正常状态时, 返回的小区信息是指 终端在由正常状态变更为非正常状态时的临界点所处小区信息, 并记录该临 界时间点, 当前时间减去上述临界时间得到小区信息的数据龄期。
5304 , SLP判断待定位终端的当前状态无法进行 SUPL定位, 但是获取 到终端最后处于正常状态时的小区信息; 具体地, 如果数据龄期符合 MLP定位请求中对位置时效的要求, SLP 查询基站数据库 (BSDB )获取该小区对应的经纬度信息返回给 CP, 并指示 定位结果的数据龄期和由小区方式获取; 如果数据龄期不符合 MLP定位请 求中对位置时效的要求, 返回定位失败的响应给 CP, 流程结束。 进一步地, 当待定位终端的当前状态为关机、 不在服务区和漫游出服务 区任一项时, SUPL AGPS方法均不适用, 结束 SUPL流程进而避免了纯粹用 户面情况时的无效等待。 釆用本发明对被定位终端当前状态处于非正常情况下的处理方法, 可以 有效控制对 SUPL INIT消息的发送, 减轻无用消息对网络的负担; 同时也能 获取终端在最后处于正常状态时的位置信息。
位的流程图, 如图 4所示, 对该终端进行定位的处理过程主要包括以下步骤 (步骤 S401至步骤 S410 ): S401 , CP发送 MLP请求至 SLP, 请求对待定位终端进行 SUPL AGPS 定位;
5402, SLP向 HLR发送 ATI请求信令, 查询待定位终端状态、 小区信 息以及移动交换中心信息;
5403 , SLP从 HLR接) 到 ATI信令响应, 响应消息中指示终端 ^| 态正 常, 且返回待定位终端目前所在的移动交换中心信息, 且返回终端在移动交 换中心最后登记的小区信息及数据龄期;
5404, SLP向待定位终端目前所在的移动交换中心发送 MT Forward SM 信令, 该信令中携带有 SUPL INIT码流;
5405 , 移动交换中心向待定位终端投递携带有 SUPL INIT码流的 MT Forward SM信令,激活待定位终端连接上述 SLP后启动 SUPL AGPS定位流 程;
5406 , 移动交换中心返回 MT Forward SM信令下发的响应消息, 指示携 带有 SUPL INIT码流的 MT Forward SM信令已发送到终端;
5407 , SLP判断上述 ATI信令响应中的小区信息数据龄期, 若较为陈旧 则再次向 HLR发起 ATI请求信令, 查询最近更新的小区信息。 若较新, 则 跳过本步骤; 具体地,由于移动交换中心在投递 MT Forward SM信令的过程中已对待 定位终端完成寻呼, 因此 MSC/VLR中有最新的位置更新结果, 控制面定位 流程只需要使用不带有 Current Location标识的 ATI信令, 就可以从 HLR快 速获取终端当前所处的小区信息, 不会触发 MSC对用户额外的寻呼过程。
S408, 对应于上面步 4聚 S407, SLP接收从 HLR返回的 ATI信令响应, 响应消息中有终端最新的所处小区信息; S409, 待定位终端在接收到 SUPL INIT消息后, 开启 SUPL定位交互流 程; 具体地, 终端与 SLP建立链接并发送 SUPL定位初始化消息 (即 SUPL POS INIT消息); 待定位终端与 SLP进行基于用户面的消息交互, 即进行 SUPL POS的交互, 在该过程中 SLP获取辅助信息并进行位置计算, 最终完 成终端的定位过程; SLP向终端发送定位结束消息( SUPL END )释放资源, 结束 SUPL定位流程。 该步 4聚由终端主动发起向 SLP建链并交互, 与步 4聚 S406、 S407、 S408 没有时间上的先后顺序之分; 但一般来说用户面消息交互没有控制面的信令 交互快, 因此对于一次完整的 SUPL交互流程来说, 其结束时间肯定位于步 骤 S408之后。
S410, SLP与终端正常进行 SUPL交互过程结束后, 成功获取到位置结 果, 通过 MLP响应返回给 CP。 图 5是本发明实施例的移动终端的定位方法的优选实施例的流程图。 在该实施例中, 涵盖了各种异常的处理, 同时为了满足 CP对定位结果 返回及时性的要求, 增加定时器设置。 如图 5所示, 对终端进行定位的详细 处理过程主要包括以下步骤 (步骤 S501至步骤 S514 ):
S501 , CP发送 MLP请求至 SLP, 请求对待定位终端进行 SUPL AGPS 定位; SLP接收后设定本次定位会话的定时器 Tl。 具体地, 在 SLP接收到 MLP请求后, 设定本次定位流程总时间控制的 定时器 T1 , 在整个定位业务流程中一旦发现定时器时间到达, 返回 MLP响 应给 CP, 结束流程。 由于控制面信令 ATI的发送和接收时间远小于用户面
SUPL交互的时间, 在 SLP等待终端建立连接超时、 或 AGPS会话没有完成 或终端没有回复 SUPL POS消息等情形下, SLP仍可获取到 ATI定位结果; 所以 SLP在定时器 T 1到达时结束定位流程,返回 ATI方式的定位结果给 CP。 这样就可满足 CP对定位结果返回的及时性要求, 减少等待时间, 提升了用 户体验。
S502, SLP向 HLR发送 ATI请求信令, 查询待定位终端状态、 小区信 息以及移动交换中心信息。 S503 , SLP从 HLR接收到 ATI信令响应, 响应消息中指示终端当前状 态信息和待定位终端目前所在的移动交换中心信息, 并返回终端在移动交换 中心最后登记的小区信息及数据龄期。 具体地, 上述待定位终端当前所处状态可为以下任一项: 正常, 关机, 或不在服务区或漫游出服务区。 S504, SLP判断终端当前 ^1大态是否处于正常。 具体地, 如果终端状态不正常, 即为关机, 或不在服务区或漫游出服务 区, SLP不再无谓的下发 SUPL INIT消息, 不会启动 SUPL定位流程。 进一步地, 如果 ATI信令响应中数据龄期符合 MLP定位请求中对位置 时效的要求, SLP查询基站数据库 (BSDB ) 获取该小区对应的经纬度信息 返回给 CP, 并指示定位结果的数据龄期和由小区方式获取; 如果数据龄期不 符合 MLP定位请求中对位置时效的要求, 返回定位失败的响应给 CP, 流程 结束。 如果终端状态处于正常, 进入步骤 S505。
5505 , SLP向待定位终端目前所在的移动交换中心发送 MT Forward SM 信令, 该信令中携带 SUPL INIT码流。
5506, MSC对待定位终端寻呼, 向其投递携带有 SUPL INIT码流的 MT Forward SM信令。 具体地, MSC可能向 VLR查询终端信息, 包括终端是否可到达等; VLR 向 MSC发送寻呼请求, 要求建立无线连接; MSC向终端发送寻呼消息; 终 端寻呼成功, 进入接入过程; MSC通知 VLR寻呼成功, VLR完成鉴权、 位 置更新、 加密等操作, 通知 MSC接入成功; MSC向终端发送接入证实消息; MSC向终端转发 MT短消息, 携带有 SUPL INIT码流; 终端向 MSC返回短 消息成功接收的响应消息。 进一步地, 如果出现终端内存不足、 通讯网络拥塞等原因, 终端未能正 确接收 MT短消息的话, MSC也会通过错误代码通知 SLP。
5507, SLP从 MSC接收 MT Forward SM信令消息下发的响应。
5508, SLP从上述响应中获取终端是否成功接收 MT短消息的指示。 具体地,如果终端未能成功接收到 MT短消息,即 SUPL INIT下发失败, 则无法启动 SUPL定位流程; 如果终端成功接收到携带有 SUPL INIT码流的 MT短消息,等待步骤 S52 发生, 步 4聚 S52由终端主动发起, SLP被动等待。
5509, SLP从上述 ATI信令响应获取到小区信息以及数据龄期。 具体地, 如果龄期足够新 (新旧判断可通过设定某一具体数值来量化, 如 60秒之内), 则无需再次重发 ATI请求信令, 进入步骤 S512; 如果龄期不够新 (如 60秒以前), 进入步 4聚 S510。
5510, SLP向 HLR发送不带有 Current Location标识的 ATI请求信令; 具体地,由于在投递 MT Forward SM信令的过程中已对待定位终端完成 寻呼, 因此 MSC/VLR中有最新的位置更新结果, 控制面定位流程只需要使 用不带有 Current Location标识的 ATI信令, 就可以从 HLR快速获取终端当 前所处的小区信息, 不会触发 MSC对用户的额外的寻呼过程。
5511 , SLP收到 HLR的 ATI信令响应消息, 获取到终端在寻呼后最近 更新的所处小区信息。 在步骤 S509 S511的过程中, 步骤 S52也在同步进行中, SLP在等待终 端建立连接, 一旦终端与 SLP连接成功建立, 则启动 SUPL交互定位流程。 SUPL交互消息的收发均基于分组交换域 (PS ) 通道。 具体地, MS发送 SUPL POS INIT消息; MS与 SLP进行基于用户面的 消息交互, 即进行 SUPL POS的交互, 在该过程中 SLP和 MS提供并获取辅 助信息,并完成终端的定位计算过程;定位完成后 SLP向终端发送 SUPL END 消息以释放资源, 结束定位流程。 S512 , SLP在通过控制面 ATI信令方式获取到终端最近的位置小区后, 判断携带有 SUPL INIT码流的 MT短消息是否发送成功。 具体地, 如果上述 MT短消息发送成功, 表明此时正在进行步骤 S52 , 即启动 SUPL定位流程, 应等待 SUPL交互流程结束或设定的定位会话定时 器 T1到达, 进入步骤 S513 ; 如果上述 MT短消息发送失败, 则表明没有启 动 SUPL交互¾¾程, 进入步骤 S5 14。
5513 ,在步 4聚 S501设定的定位会话定时器 T1到达或 SUPL交互结束时, 判断 SUPL定位是否成功获取到位置结果。 具体地, 如果用户面 SUPL定位成功获取到位置结果, 进入步骤 S515。 如果用户面 SUPL定位交互由于终端不支持 SUPL十办议, 或终端建立连 接超时, 或 AGPS会话没有完成, 或终端没有回复 SUPL消息, 或辅助信息 不够等异常导致定位计算失败,或在设定的定位会话定时器 T1到达后 SUPL 交互仍未结束, jtb时进入步 4聚 S514。 釆用本发明在处理终端混合定位时, 用户面高精度定位和控制面粗定位 同时进行, 从而避免了在用户面高精度定位方式失败后才执行控制面粗定位 方式这种试错方式 I起的较长超时等待, 在网络侧第三方发起 ΝΙ请求时, 若对定位结果响应时间及时性要求较高时, 也可满足其需求。
5514 , SLP根据 ATI信令响应中的小区信息查询基站数据库 BSDB获取 到位置的经纬度结果。 S515 , SLP向 CP返回 MLP定位结果响应,位置结果中指出来源自 SUPL 高精度定位或是小区粗定位即控制面 ATI定位结果, 并指示位置结果的产生 时间。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执 行指令的计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是 在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤。 图 6是根据本发明实施例提供的定位平台的示意图。 如图 6所示, 该定位平台包括第一发送模块 602、 第一判断模块 604、 第二发送模块 606。 第一发送模块 602 , 用于向移动终端的归属位置寄存器发送请求信令, 其中, 该请求信令包括请求查询移动终端的状态信息的信令; 第一判断模块 604, 用于根据归属位置寄存器返回的状态信息判断移动终端的状态是否正 常; 第二发送模块 606, 用于在移动终端的状态正常的情况下, 通过移动终 端所处的移动交换中心向移动终端发送安全用户平面定位 SUPL请求。 进一步地, 上述请求信令还包括请求查询移动终端所处的移动交换中心 信息的信令, 第二发送模块 606还用于移动交换中心发送携带有安全用户平 面定位初始化消息的信令。 上述的请求信令还可以包括请求查询移动终端所处的小区信息的信令, 上述的定位平台还可以包括: 第二判断模块, 用于 居归属位置寄存器返回 的信令响应判断小区信息的数据龄期是否超过预定期限, 其中, 在小区信息 的数据龄期超过预定期限的情况下, 第一发送模块再次向归属位置寄存器发 送随机查询 ATI信令; 以及更新模块, 用于根据归属位置寄存器返回的信令 响应更新移动终端的位置信息。 本发明实施例还提供了一种移动终端的定位系统, 该移动终端的定位系 统包括移动终端的归属位置寄存器、 定位平台、 移动终端所处的移动交换中 心、 内容提供商, 其中, 定位平台, 用于向移动终端的归属位置寄存器发送 请求信令, 该请求信令包括请求查询移动终端的状态信息的信令; 归属位置 寄存器用于向定位平台返回状态信息; 以及定位平台还用于在移动终端的状 态正常的情况下, 通过移动终端所处的移动交换中心向移动终端发送安全用 户平面定位 SUPL请求。 综上所述, 借助本发明实施例提供的上述技术方案, 通过 ATI信令查询 终端的当前状态以及小区信息, 在终端当前处于不正常状态时, SLP可以直 接结束 SUPL定位流程, 而无需被动等待终端连接超时, 从而避免了 SLP无 意义的等待, 同时还可以提供一个小区精度的位置数据; 在本发明实施例中, 通过向移动交换中心发送信令发送 SUPL INIT消息, 可以发挥控制面的信令 发送及时的优势, 避免了 SUPL INIT消息发送延迟的问题, 降低了 SUPL定 位的依赖性。 另外, 在本发明实施例中, 在 SUPL定位交互时, 可选的同步 进行控制面不带 Current Location标识的 ATI定位,以获取终端最新更新的小 区信息, 用于当 AGPS失败或耗时太长的话, 可中途结束 AGPS定位流程, 提供一个小区精度的位置数据; 从而提高了 SLP的定位服务能力, 增强了运 营商的竟争力。 从以上的描述中, 可以看出, 本发明可以减少网络资源的浪费问题, 进 一步地, 可以实现快速高效地对移动终端进行定位。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种向移动终端发送定位请求的方法, 其特征在于, 包括:
定位平台向移动终端的归属位置寄存器发送请求信令, 其中, 所 述请求信令包括请求查询所述移动终端的状态信息的信令;
所述定位平台才艮据所述归属位置寄存器返回的所述状态信息判断 所述移动终端的状态是否正常; 在所述移动终端的状态正常的情况下, 所述定位平台通过所述移 动终端所处的移动交换中心向所述移动终端发送安全用户平面定位
SUPL请求。
2. 居权利要求 1所述的方法, 其特征在于, 所述请求信令还包括请求 查询所述移动终端所处的移动交换中心信息的信令, 所述定位平台通 过所述移动终端所处的移动交换中心向所述移动终端发送安全用户平 面定位 SUPL请求包括:
所述定位平台向所述移动交换中心发送携带有安全用户平面定位 初始化消息的信令;
所述移动交换中心将所述安全用户平面定位初始化消息发送给所 述移动终端。
3. 居权利要求 1所述的方法, 其特征在于, 在所述定位平台通过所述 移动终端所处的移动交换中心向所述移动终端发送安全用户平面定位 SUPL请求之后, 还包括:
所述移动终端与所述定位平台建立链接以使所述定位平台对所述 移动终端的位置进行定位。
4. 居权利要求 1所述的方法, 其特征在于, 所述请求信令还包括请求 查询所述移动终端所处的小区信息的信令, 在所述移动终端的状态异 常的情况下, 还包括:
所述定位平台将所述归属位置寄存器返回的所述移动终端所处的 小区信息发送给请求者。
5. 居权利要求 4所述的方法, 其特征在于, 在所述定位平台获取所述 移动终端所处的小区信息之后, 所述方法还包括:
所述定位平台才艮据所述归属位置寄存器返回的信令响应判断所述 小区信息的数据龄期是否超过预定期限;
在所述小区信息的数据龄期超过所述预定期限的情况下, 所述定 位平台再次向所述归属位置寄存器发送查询所述小区信息的信令; 所述定位平台 居所述归属位置寄存器返回的信令响应更新所述 移动终端的位置信息。
6. 根据权利要求 1所述的方法, 其特征在于, 所述移动终端的状态信息 包括用于指示所述移动终端处于以下状态之一的信息:
正常状态、 关机状态、 不在服务区状态、 漫游出服务区状态, 其 中, 所述关机状态、 所述不在服务区状态、 所述漫游出服务区状态指 示所述移动终端处于异常状态。
7. 一种定位平台, 其特征在于, 包括:
第一发送模块,用于向移动终端的归属位置寄存器发送请求信令 , 其中, 所述请求信令包括请求查询所述移动终端的状态信息的信令; 第一判断模块, 用于才艮据所述归属位置寄存器返回的所述状态信 息判断所述移动终端的状态是否正常;
第二发送模块, 用于在所述移动终端的状态正常的情况下, 通过 所述移动终端所处的移动交换中心向所述移动终端发送安全用户平面 定位 SUPL请求。
8. 居权利要求 7所述的定位平台, 其特征在于, 所述请求信令还包括 请求查询所述移动终端所处的移动交换中心信息的信令, 所述第二发 送模块还用于所述移动交换中心发送携带有安全用户平面定位初始化 消息的信令。
9. 才艮据权利要求 7所述的定位平台, 其特征在于, 所述请求信令还包括 请求查询所述移动终端所处的小区信息的信令,所述定位平台还包括: 第二判断模块, 用于根据所述归属位置寄存器返回的信令响应判 断所述小区信息的数据龄期是否超过预定期限, 其中, 在所述小区信 息的数据龄期超过所述预定期限的情况下, 所述第一发送模块再次向 所述归属位置寄存器发送查询所述小区信息的信令; 以及
更新模块, 用于根据所述归属位置寄存器返回的信令响应更新所 述移动终端的位置信息。 一种移动终端的定位系统, 其特征在于, 包括移动终端的归属位置寄 存器、 定位平台、 所述移动终端所处的移动交换中心, 其中, 所述定 位平台用于向所述移动终端的归属位置寄存器发送请求信令, 其中, 所述请求信令包括请求查询所述移动终端的状态信息的信令; 所述归 属位置寄存器用于向所述定位平台返回所述状态信息; 以及所述定位 平台还用于在所述移动终端的状态正常的情况下, 通过所述移动终端 所处的移动交换中心向所述移动终端发送安全用户平面定位 SUPL请 求。
PCT/CN2011/070046 2010-09-02 2011-01-05 向移动终端发送定位请求的方法及系统、定位平台 WO2012027971A1 (zh)

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