WO2012048558A1 - 一种通过网关移动位置中心实现定位的方法及装置 - Google Patents

一种通过网关移动位置中心实现定位的方法及装置 Download PDF

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Publication number
WO2012048558A1
WO2012048558A1 PCT/CN2011/072297 CN2011072297W WO2012048558A1 WO 2012048558 A1 WO2012048558 A1 WO 2012048558A1 CN 2011072297 W CN2011072297 W CN 2011072297W WO 2012048558 A1 WO2012048558 A1 WO 2012048558A1
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gmlc
positioning
location information
location
rnc
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PCT/CN2011/072297
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English (en)
French (fr)
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叶建阳
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中兴通讯股份有限公司
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Publication of WO2012048558A1 publication Critical patent/WO2012048558A1/zh

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    • 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
    • H04W4/02Services making use of location information

Definitions

  • the present invention relates to a positioning technology in the field of communications, and in particular, to a method and apparatus for realizing positioning through a Gateway Mobile Location Center (GMLC).
  • GMLC Gateway Mobile Location Center
  • LBS Location Based Service
  • AGP Assisted Global Positioning System
  • the GMLC and the SMLC are required to participate in the positioning of the terminal.
  • the GMLC is mainly responsible for processing the location request sent by the positioning client (LCS Client), obtaining the latitude and longitude information of the user and returning it to the LCS Client.
  • GMLC is also the operating platform for positioning business systems, and completes functions such as user data management, business data management, service provider (SP), and billing.
  • the SMLC is mainly responsible for collecting measurement data related to location services, performing positioning calculations and obtaining positioning results.
  • the SMLC function is usually integrated inside a Radio Network Controller (RNC) or a Base Station Controller (BSC). Or it can be implemented by an independently set SMLC functional entity.
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • SMLC integrated in RNC or BSC limited by RNC or BSC hardware and software resources, only SMLC devices with specific computing functions are integrated into RNC or BSC, only some specific positioning calculations can be realized, and processing performance is extremely limited. And when upgrading and maintaining, it needs to be upgraded together with other software. Especially when it is necessary to interrupt the operation of the service, the RNC and the BSC can easily and cannot interrupt the service.
  • the maintenance and upgrade of the SMLC function integrated in the RNC or the BSC is It is very inconvenient; the independently set SMLC functional entity requires the RNC to support the Iupc interface or the BSC to support the Lb interface to connect to the independently set SMLC functional entity, which greatly increases the hardware and link overhead.
  • the main object of the present invention is to provide a method and apparatus for realizing positioning by using GMLC to solve the problems of limited processing performance, difficulty in maintenance and upgrade, and the like in the existing positioning technology.
  • the present invention provides a method for implementing positioning by a Gateway Mobile Location Center (GMLC), the method comprising: acquiring, by a GMLC, a location information of a located terminal from a base station controller (BSC) or a radio network controller (RNC), and according to The obtained location information is subjected to positioning calculation to obtain a positioning result of the positioned terminal.
  • GMLC Gateway Mobile Location Center
  • the GMLC acquires the location information of the located terminal from the BSC or the RNC, where: the BSC or the RNC collects the location information of the located terminal, and passes the mobile switching center where the located terminal is located ( MSC) is sent to the GMLC.
  • the BSC or the RNC collects the location information of the located terminal, and sends the location information of the located terminal to the GMLC by using the MSC where the located terminal is located, including: BSC or RNC. And the collected location information is encapsulated into the location response signaling or the location report signaling, and sent to the MSC of the located terminal; the MSC where the located terminal is located reports from the execution location response signaling or location Extracted to the location in signaling Information, and the location information is carried to the GMLC by providing a user location response.
  • the method further includes: after receiving the mobile location protocol request sent by the positioning client, the GMLC sends the user location signaling To the MSC, the MSC sends an execution location request signaling or a location report control signaling to the RNC or the BSC, requesting to acquire location information of the located terminal.
  • the method further includes: sending, by the GMLC, the obtained positioning result to the positioning client.
  • the present invention also provides an apparatus for performing positioning, the apparatus is a GMLC, the GMLC includes: an obtaining unit and a calculating unit, wherein the acquiring unit is configured to acquire location information of the located terminal from the BSC or the RNC; The unit is configured to perform positioning calculation according to the location information acquired by the acquiring unit, to obtain a positioning result of the located terminal.
  • the GMLC further includes a receiving unit, configured to receive a mobile positioning protocol request sent by the positioning client, where the acquiring unit is further configured to: after the receiving unit receives the mobile positioning protocol request, The BSC or the RNC acquires location information of the located terminal.
  • the GMLC further includes a sending unit, configured to send the positioning result obtained by the calculating unit to the positioning client.
  • the GMLC acquires the location information of the located terminal from the BSC or the RNC, and performs positioning calculation according to the acquired location information to obtain the location of the located terminal.
  • the SMLC function is integrated into the GMLC, and the integrated deployment of the GMLC and the SMLC is realized, the integration degree of the system is improved, the investment of the operator is saved, and the SMLC function under the 3GPP network becomes easy to implement and deploy.
  • FIG. 1 is a structural diagram of a positioning system network in a 3GPP network
  • FIG. 3 is a schematic structural diagram of a device configured to implement positioning according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a 2G SMLC positioning system according to Embodiment 1 of the present invention
  • 5 is a schematic structural diagram of a 3G SMLC positioning system provided by Embodiment 2 of the present invention.
  • the basic idea of the present invention is: Integrating the SMLC function into the GMLC, the positioning of the positioned terminal can be realized by the GMLC, which not only facilitates the improvement of the processing capability of the positioning system, but also facilitates the maintenance of the positioning system and the sharing of resources. At the same time, it can also save the operator's investment.
  • a method for realizing positioning by using GMLC according to the present invention is as shown in FIG. 2, and the method mainly includes:
  • Step 201 The GMLC acquires location information of the located terminal from the BSC or the RNC.
  • Step 202 Perform positioning calculation according to the obtained location information, and obtain a positioning result of the located terminal.
  • the GMLC obtains the location information of the located terminal from the BSC or the RNC, and may be: the BSC or the RNC collects the location information of the located terminal, and passes the mobile switching center where the located terminal is located (MSC, Mobile Switching) Center ) is sent to the GMLC.
  • MSC Mobile Switching
  • the BSC or the RNC collects location information of the located terminal, and collects The obtained location information is encapsulated into an Perform Location Response signaling or Location Report signaling, and sent to the MSC of the located terminal; the MSC of the located terminal receives the execution location response Signaling or location reporting signaling, extracting the location information from the performing location response signaling or location reporting signaling, and transmitting the location information to the location by providing a user location response (PSL, Provide Subscriber Location Response) GMLC.
  • PSL Provide Subscriber Location Response
  • the location information collected by the RNC may include, but is not limited to, a cell identifier (Cellid) of the local cell and the neighboring cell, and any one or more of the following parameters: RTT, Round-Trip Time, and path loss (Pathloss) ), Received Signal Code Power (RSCP, Received Signal Code Power), Signal-to-Noise Ratio (Ec/N0), RNC Identification (RNCID), Latitude and Longitude Data, and Up and Down Time of Arrival (TOA), and Time Difference of Arrival (TDOA) ) and other parameters.
  • Cellid cell identifier
  • RTT Round-Trip Time
  • Path loss Pathloss
  • RSCP Received Signal Code Power
  • Ec/N0 Signal-to-Noise Ratio
  • RNCID RNC Identification
  • TOA Up and Down Time of Arrival
  • TDOA Time Difference of Arrival
  • the method may further include: sending, by the GMLC, the obtained positioning result to the LCS Client.
  • the present invention further provides an apparatus configured to implement positioning.
  • the apparatus mainly includes: an obtaining unit 31 and a calculating unit 32, wherein the obtaining unit 31 is configured to obtain from a BSC or an RNC.
  • the location information of the located terminal is calculated.
  • the calculation unit 32 is configured to perform positioning calculation according to the location information acquired by the acquiring unit 31, and obtain a positioning result of the located terminal.
  • the GMLC may further include a receiving unit 33, configured to receive a mobile positioning protocol request sent by the positioning client, where the acquiring unit 31 is configured to: after the receiving unit 33 receives the mobile positioning protocol request, The BSC or the RNC acquires location information of the located terminal.
  • the BSC when the BSC receives the Perform Location Request sent by the MSC, the BSC collects the location information of the TA and NMR of the located terminal, and directly encapsulates it in the Perform Location Response and sends it to the MSC. The MSC then passes the PSL. In response to returning the location information to the GMLC, the positioning calculation is performed by the GMLC, and the obtained positioning result is directly returned to the LCS Client.
  • the RNC receives the Location Report Control signaling sent by the MSC, the location information including the RTT, the neighbor's Pathloss, RSCP, Ec/N0, RNCID, Cellid, and corresponding latitude and longitude is directly encapsulated in the Location Report. And sending the location information to the GMLC through the PSL response, performing positioning calculation by the GMLC, and directly returning the obtained positioning result to the LCS Client.
  • the process of positioning by using GMLC specifically includes the following steps:
  • the LCS Client sends an MLP Location Request (MLP Request) to the GMLC.
  • MLP Request MLP Location Request
  • the GMLC completes the authentication, sends PSL signaling to the MSC where the located terminal is located, and requests location information of the located terminal.
  • the GMLC obtains, from the HLR, an identifier of the MSC/Visitor Location Register (VLR, Servicing GPRS Support Node) of the located terminal, such as an MSC number (msc-Number) or an SGSN number. (sgsn-Number), and according to the obtained identifier of the MSC/VLR/SGSN, send PSL signaling to the MSC where the located terminal is located.
  • VLR MSC/Visitor Location Register
  • Step S403 After receiving the PSL sent by the GMLC, the MSC sends a Perform Location Request to the BSC to request location information of the located terminal.
  • Step S406 The GMLC extracts location information of the located terminal from a PSL response sent by the MSC, and uses information such as a cell identifier (Cellid), a timing advance (TA), and a network measurement report (NMR) included in the location information. Apply the empirical radio wave propagation model, for example, the Okumura-Hata model, to complete the positioning calculation, such as trigonometric calculation, or least squares iterative calculation, to obtain the positioning result, and realize the function of SMLC.
  • a cell identifier for example, the timing advance (TA), and a network measurement report (NMR) included in the location information.
  • TA timing advance
  • NMR network measurement report
  • an empirical radio wave propagation model is applied by using a cell identifier (Callid), a timing advance (TA), and a neighboring average reception level (RxLev) measurement value in a network measurement report (NMR) included in the location information.
  • a cell identifier Callid
  • TA timing advance
  • RxLev neighboring average reception level
  • NMR network measurement report
  • RxLev is a statistical parameter describing the received signal strength (Sign Strengh), and the height of RxLev reflects the distance.
  • the parameters included in the position information are different, and the positioning calculation method used is different, which is a commonly used means well known to those skilled in the art, and will not be described herein.
  • the calculated positioning result is directly sent to the LCS Client.
  • the process of locating through GMLC specifically includes the following steps:
  • Step S503 After receiving the PSL signaling sent by the GMLC, the MSC sends a Location Report Control signaling to the RNC to request location information of the located terminal.
  • Step S510 The GMLC extracts the location information from the PSL response sent by the MSC, completes the positioning calculation, obtains the positioning result, and implements the SMLC function.
  • the RTT and the measurement set in the location information and the RSCP, Ec/N0, and Pathloss parameters of the monitoring set cell may be utilized, and corresponding positioning calculation methods, such as triangulation calculation, may be used to complete the positioning calculation. Position the results.
  • the parameters included in the location information are different, and the positioning calculation methods used are different.
  • the triangulation method is used for positioning calculation, and the least-squares iterative calculation method can also be used.
  • Step S511 The GMLC sends an MLP Request to the LCS Client, and directly obtains the calculated positioning result to the LCS Client.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

一种通过网关移动位置中心实现定位的方法及装置 技术领域
本发明涉及通信领域的定位技术, 尤其涉及一种通过网关移动位置中 心 (GMLC, Gateway Mobile Location Center ) 实现定位的方法及装置。 背景技术
基于位置的业务(LBS, Location Based Service ) 又称为移动位置业务 或定位业务, 该业务的主要内容包括: 移动定位中心与移动通信网络中的 部分实体进行交互; 通过无线定位技术或辅助全球定位系统 (AGPS , Assisted Global Positioning System )定位技术获取移动终端的必要测量数据; 通过位置计算实体的地理位置信息, 例如, 经纬度坐标的估算, 基于移动 终端的位置提供相应的呼叫或非呼叫业务和信息服务。
在第三代合作伙伴计划( 3GPP, 3rd Generation Partner Project )网络中, 定位系统网络结构如图 1所示,与 LBS相关的网元主要有 GMLC和移动位 置服务中心( SMLC, Serving Mobile Location Center )或独立 SMLC ( SAS, Stand-Alone SMLC ), 为了描述方便, 将 SMLC和 SAS统称为 SMLC。
在现有的定位技术中,需要 GMLC与 SMLC共同参与实现对终端的定 位。 其中, GMLC主要负责处理对定位客户端(LCS Client )发送的位置请 求, 获得用户的经纬度信息并返回给 LCS Client。 同时, GMLC还是定位 业务系统的运营平台,完成用户数据管理、业务数据管理、业务提供商(SP, Service Provider )管理和计费等功能。 SMLC主要负责收集位置业务相关的 测量数据、 以及进行定位计算并得到定位结果。
实际应用中, SMLC 功能通常集成在无线网络控制器 (RNC , Radio Network Controller )或基站控制器(BSC, Base Station Controller ) 内部, 或者由一个独立设置的 SMLC功能实体实现。 对于集成在 RNC或 BSC内 部的 SMLC, 受 RNC或 BSC硬件和软件资源的限制, 只是将具有特定计 算功能的 SMLC器件集成到 RNC或 BSC中, 只能实现一些特定的定位计 算, 处理性能极其有限, 并且升级和维护时, 需要和其它软件一起升级, 特别是需要中断业务进行操作的时候, RNC和 BSC是轻易不能中断服务的, 因此, 集成在 RNC或者 BSC内部的 SMLC功能的维护和升级是很不方便 的; 独立设置的 SMLC功能实体, 需要 RNC支持 Iupc接口或 BSC支持 Lb 接口, 才能与独立设置的 SMLC功能实体连接, 而这种方式会大大增加硬 件和链路开销。 发明内容
有鉴于此, 本发明的主要目的在于提供一种通过 GMLC实现定位的方 法及装置, 以解决现有定位技术中处理性能有限、 维护和升级困难等问题。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供了一种通过网关移动位置中心 (GMLC ) 实现定位的方法, 所述方法包括: GMLC从基站控制器(BSC )或无线网络控制器 (RNC ) 获取被定位终端的位置信息, 并根据所获取到的位置信息, 进行定位计算, 得到被定位终端的定位结果。
在上述方案中, 所述 GMLC从 BSC或 RNC获取被定位终端的位置信 息, 为: 所述 BSC或 RNC收集所述被定位终端的位置信息, 并通过所述 被定位终端所在的移动交换中心 (MSC )发送给所述 GMLC。
在上述方案中, 所述 BSC或 RNC收集所述被定位终端的位置信息, 并通过所述被定位终端所在的 MSC发送给所述 GMLC,包括: BSC或 RNC 收集所述被定位终端的位置信息, 将收集到的位置信息封装到执行位置响 应信令或位置报告信令中, 发送给所述被定位终端的 MSC; 所述被定位终 端所在的 MSC从所述执行位置响应信令或位置报告信令中提取到所述位置 信息, 并将所述位置信息通过提供用户位置响应携带给所述 GMLC。
在上述方案中, 所述 BSC收集到的位置信息, 包括小区标识, 以及以 下参数的任意一个或多个: 时间提前量、 网络测量报告中的各参数、 上下 行链路的到达时间、 到达时间差; 所述 RNC收集到的位置信息, 包括本小 区和邻接小区的小区标识以及以下参数的任意一个或多个: 本小区和邻接 小区的往返时延、 路损、 接收信号码功率、 信噪比、 RNC标识, 经纬度数 据、 上下行链路的到达时间、 到达时间差。
在上述方案中, 在所述 BSC或 RNC收集所述被定位终端的位置信息 之前, 所述方法还包括: 所述 GMLC接收到定位客户端发送的移动定位协 议请求后, 发送提供用户位置信令到所述 MSC, 所述 MSC再向 RNC或 BSC发送执行位置请求信令或位置报告控制信令, 请求获取被定位终端的 位置信息。
在上述方案中, 在得到被定位终端的定位结果之后, 所述方法还包括: 所述 GMLC将所得到的定位结果发送给定位客户端。
本发明还提供了一种设置为实现定位的装置, 所述装置为 GMLC, 该 GMLC 包括: 获取单元和计算单元, 其中, 获取单元, 设置为从 BSC 或 RNC获取被定位终端的位置信息; 计算单元, 设置为根据所述获取单元获 取到的位置信息, 进行定位计算, 得到被定位终端的定位结果。
在上述方案中, 所述 GMLC还包括接收单元, 设置为接收定位客户端 发送的移动定位协议请求; 所述获取单元, 还设置为在所述接收单元接收 到所述移动定位协议请求后, 从 BSC或 RNC获取被定位终端的位置信息。
在上述方案中, 所述 GMLC还包括发送单元, 设置为将所述计算单元 得到的定位结果发送给定位客户端。
本发明的定位方法中, GMLC从 BSC或 RNC获取被定位终端的位置 信息, 并根据所获取到的位置信息进行定位计算, 得到被定位终端的定位 结果, 从而将 SMLC功能集成到了 GMLC中 , 实现了 GMLC和 SMLC的 合一部署, 提高了系统的集成度, 节约了运营商的投资, 使得 3GPP网络下 SMLC功能变得易于实现和部署。 附图说明
图 1为 3GPP网络中定位系统网络结构图; 图 3为本发明实施例中设置为实现定位的装置的组成结构示意图; 图 4为本发明实施例一提供的 2G SMLC定位系统的结构示意图; 图 5为本发明实施例二提供的 3G SMLC定位系统的结构示意图。 具体实施方式
本发明的基本思想是: 将 SMLC功能集成到 GMLC中, 通过 GMLC 便能够实现对被定位终端的定位, 不仅有利于定位系统处理能力的提升, 而且有利于定位系统的维护、 以及资源的共享, 同时还可以节省运营商的 投资。
本发明的一种通过 GMLC实现定位的方法, 参照图 2所示, 所述方法 主要包括:
步骤 201: GMLC从 BSC或 RNC获取被定位终端的位置信息; 步骤 202: 根据所获取到的位置信息, 进行定位计算, 得到被定位终端 的定位结果。
其中, GMLC从 BSC或 RNC获取被定位终端的位置信息, 可以为: 所述 BSC或 RNC收集所述被定位终端的位置信息, 并通过所述被定位终 端所在的移动交换中心 (MSC , Mobile Switching Center ) 发送给所述 GMLC。
具体地, 所述 BSC或 RNC收集所述被定位终端的位置信息, 将收集 到的位置信息封装到执行位置响应 ( Perform Location Response )信令或位 置报告(Location Report )信令中, 发送给所述被定位终端的 MSC; 所述被 定位终端的 MSC接收所述执行位置响应信令或位置报告信令,从所述执行 位置响应信令或位置报告信令中提取所述位置信息, 再将所述位置信息通 过提供用户位置响应 ( PSL, Provide Subscriber Location Response )发送给 所述 GMLC。
这里, BSC收集到的位置信息可以包括但不限于: 小区标识(Cellid ), 以及以下参数的任意一个或多个: 时间提前量(TA, Timing Advance ), 网 络测量才艮告(NMR, Network Measurement Report ) 中的各参数、 上下行链 路的到达时间 (TOA )、 以及到达时间差 (TDOA )等参数; 这里, 网络测 量才艮告(NMR, Network Measurement Report ) 中的参数, 可以包括部区平 均接收电平 (RxLev )等参数。
RNC收集到的位置信息可以包括但不限于: 本小区和邻接小区的小区 标识( Cellid ),以及以下参数的任意一个或多个:往返时延( RTT, Round-Trip Time ), 路损 ( Pathloss ), 接收信号码功率(RSCP, Received Signal Code Power )、 信噪比(Ec/N0 )、 RNC标识( RNCID ), 经纬度数据、 以及上下 行链路的到达时间 (TOA )、 以及到达时间差 (TDOA )等参数。
在 BSC或 RNC收集所述被定位终端的位置信息之前, 所述方法还包 括: GMLC接收到 LCS Client发送的移动定位协议请求( MLP Request, Mobile Location Protocol Request )后, 发送提供用户位置信令( PSL )到所 述 MSC, MSC再向 RNC或 BSC发送执行位置请求信令 ( Perform Location Request )或位置 4艮告控制信令 ( Location Report Control ), 请求获取被定位 终端的位置信息。
在得到被定位终端的定位结果之后,所述方法还可以包括:所述 GMLC 将所得到的定位结果发送给所述 LCS Client。 为了实现上述方法, 本发明还提供了一种设置为实现定位的装置, 参 照图 3所示, 该装置主要包括: 获取单元 31和计算单元 32, 其中, 获取单 元 31设置为从 BSC或 RNC获取被定位终端的位置信息; 计算单元 32, 设 置为根据所述获取单元 31获取到的位置信息, 进行定位计算, 得到被定位 终端的定位结果。
其中, 所述 GMLC还可以包括接收单元 33 , 设置为接收定位客户端发 送的移动定位协议请求; 所述获取单元 31 ,设置为在所述接收单元 33接收 到所述移动定位协议请求后, 从 BSC或 RNC获取被定位终端的位置信息。
其中,所述 GMLC还可以包括发送单元 34,设置为将所述计算单元 32 得到的定位结果发送给定位客户端。
实际应用中, 通过上述的装置实现定位的具体过程, 请参照上文相关 方法的描述、 以及下文实施例的描述, 在此不再赘述。
实际应用中,对于 2G网络,当 BSC接收到 MSC下发的 Perform Location Request时, BSC将收集被定位终端的 TA和 NMR等位置信息, 直接封装 在 Perform Location Response中发送给 MSC, MSC再通过 PSL响应将所述 位置信息返回到 GMLC, 由 GMLC进行定位计算, 并将得到的定位结果直 接返回给 LCS Client。
对于 3G网络, 当 RNC接收到 MSC下发的 Location Report Control信 令时, 将包含 RTT、 邻区的 Pathloss、 RSCP、 Ec/N0、 RNCID、 Cellid以及 相应的经纬度等的位置信息直接封装在 Location Report中, 发送给 MSC; 再通过 PSL响应将所述位置信息返回到 GMLC, 由 GMLC进行定位计算, 并将得到的定位结果直接返回给 LCS Client。
实施例一
在 2G 网络中, 通过 GMLC实现定位的过程, 如图 4所示, 具体包括 以下步骤: 步骤 S401 , LCS Client向 GMLC发送 MLP定位请求( MLP Request )。 步骤 S402, GMLC完成鉴权, 向被定位终端所在的 MSC发送 PSL信 令, 请求被定位终端的位置信息。
具体地, GMLC 从 HLR 获得被定位终端的 MSC/拜访位置寄存器 ( VLR, Visitor Location Register) / GPRS服务支持节点 (SGSN, Servicing GPRS Support Node ) 的标识, 例如 MSC号码( msc-Number )或者 SGSN 号码( sgsn-Number ), 并根据所获得的 MSC/VLR/SGSN的标识, 向被定位 终端所在的 MSC发送 PSL信令。
步骤 S403 , MSC收到 GMLC发送的 PSL后, 向 BSC发送 Perform Location Request, 请求被定位终端的位置信息。
步骤 S404, BSC收集到被定位终端的、 包含有 TA和 NMR等数据的 位置信息后, 打包后封装在 Perform Location Response中返回给 MSC; 具体地, 可以借用 Perform Location Response中的现有字段, 或者可以 在 Perform Location Response中定义专用的扩展字段, 来封装所述位置信 息。
步骤 S405、 MSC将 BSC所发送 Perform Location Response中的位置信 息转移到 PSL响应 ( PSL ACK ) 中, 发送给 GMLC。
步骤 S406、 GMLC从 MSC发送的 PSL响应中提取所述被定位终端的 位置信息, 利用位置信息中包含的小区的标识(Cellid )、 时间提前量(TA )、 以及网络测量报告(NMR )等信息, 应用经验电波传播模型, 例如, 奥村- 哈塔( Okumura-Hata )模型, 完成定位计算, 如三角计算、 或最小二乘迭 代计算, 得到定位结果, 实现 SMLC的功能。
具体地,利用位置信息中包含的小区的标识( Cellid )、时间提前量( TA )、 以及网络测量报告 (NMR ) 中的邻区平均接收电平 (RxLev ) 的测量值, 应用经验电波传播模型, 例如, Okumura-Hata模型, 釆用相应的定位计算 方法, 如三角计算或最小二乘迭代计算等计算方法, 完成定位计算, 得到 定位结果。
其中, RxLev是描述收到信号强度( Signal Strengh )的统计参数, RxLev 的高低反映了距离的远近。
这里, 在定位计算中, 位置信息中包含的参数不同, 所釆用的定位计 算方法也不同, 这是本领域技术人员熟知的常用手段, 在此不再赘述。 将计算得到的定位结果直接给 LCS Client。
实施例二
在 3G 网络中, 通过 GMLC实现定位的过程, 如图 4所示, 具体包括 以下步骤:
步骤 S501 , LCS Client向 GMLC发送 MLP定位请求( MLP Request )。 步骤 S502, GMLC完成鉴权, 并向被定位终端的 MSC发送 PSL信令, 请求被定位终端的位置信息。
具体地, GMLC从 HLR获得被定位终端的 MSC/VLR/SGSN的标识, 例如 MSC号码或者 SGSN号码,并根据所获得的 MSC/VLR/SGSN的标识, 向被定位终端的 MSC发送 PSL信令。
步骤 S503 , MSC收到 GMLC发送的 PSL信令后,向 RNC发送 Location Report Control信令, 请求被定位终端的位置信息。
步骤 S504~S507 , RNC分别向 UE和 NodeB发送测量请求( Measurement Request ),获取包含有 RTT、Pathloss、RSCP、Ec/NO等测量结果( Measurement Response ) 的位置信息。
步骤 S508, RNC将获取到的位置信息, 以及通过查询数据库得到的被 定位终端所在小区及其邻接小区的天线的经纬度等位置信息, 打包在 Location Report信令中返回给 MSC; 具体地, 可以借用 Location Report 中的现有字段, 或者在 Location Report中定义专用的扩展字段, 来封装所述位置信息。
步骤 S509、 MSC将 RNC所发送 Location Report中的位置信息转移到 PSL响应 (PSLACK ) 中, 发送给 GMLC。
步骤 S510、 GMLC从 MSC发送的 PSL响应中提取所述位置信息, 完 成定位计算, 得到定位结果, 实现 SMLC的功能。
具体地, 可以利用位置信息中包含的 RTT和测量报告中的激活集和监 测集小区的 RSCP 、 Ec/N0、 Pathloss等参数, 釆用相应的定位计算方法, 如三角计算, 完成定位计算, 得到定位结果。
在 3G网络中, 同理, 位置信息中包含的参数不同, 所釆用的定位计算 方法也不同, 一般釆用三角计算的方法进行定位计算, 也可以釆用最小二 乘迭代计算的方法。
步骤 S511、 GMLC 向 LCS Client发送 MLP定位请求( MLP Request ), 将计算得到的定位结果直接给 LCS Client。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种通过网关移动位置中心 (GMLC ) 实现定位的方法, 其中, 所 述方法包括:
GMLC从基站控制器(BSC )或无线网络控制器(RNC )获取被定位 终端的位置信息, 并根据所获取到的位置信息, 进行定位计算, 得到被定 位终端的定位结果。
2、 根据权利要求 1所述的通过 GMLC实现定位的方法, 其中, 所述 GMLC从 BSC或 RNC获取被定位终端的位置信息, 为:
所述 BSC或 RNC收集所述被定位终端的位置信息, 并通过所述被定 位终端所在的移动交换中心 (MSC )发送给所述 GMLC。
3、 根据权利要求 2所述的通过 GMLC实现定位的方法, 其中, 所述 BSC或 RNC收集所述被定位终端的位置信息,并通过所述被定位终端所在 的 MSC发送给所述 GMLC, 包括:
BSC或 RNC收集所述被定位终端的位置信息,将收集到的位置信息封 装到执行位置响应信令或位置报告信令中,发送给所述被定位终端的 MSC; 所述被定位终端所在的 MSC从所述执行位置响应信令或位置报告信令中提 取到所述位置信息, 并将所述位置信息通过提供用户位置响应携带给所述 GMLC。
4、 根据权利要求 2或 3所述的通过 GMLC实现定位的方法, 其中, 所述 BSC收集到的位置信息, 包括小区标识, 以及以下参数的任意一 个或多个: 时间提前量、 网络测量报告中的各参数、 上下行链路的到达时 间、 到达时间差;
所述 RNC收集到的位置信息, 包括本小区和邻接小区的小区标识以及 以下参数的任意一个或多个: 本小区和邻接小区的往返时延、 路损、 接收 信号码功率、 信噪比、 RNC标识, 经纬度数据、 上下行链路的到达时间、 到达时间差。
5、根据权利要求 2或 3所述的通过 GMLC实现定位的方法, 其中, 在 所述 BSC或 RNC收集所述被定位终端的位置信息之前, 所述方法还包括: 所述 GMLC接收到定位客户端发送的移动定位协议请求后, 发送提供 用户位置信令到所述 MSC, 所述 MSC再向 RNC或 BSC发送执行位置请 求信令或位置报告控制信令, 请求获取被定位终端的位置信息。
6、根据权利要求 1所述的通过 GMLC实现定位的方法, 其中, 在得到 被定位终端的定位结果之后, 所述方法还包括: 所述 GMLC将所得到的定 位结果发送给定位客户端。
7、 一种设置为实现定位的装置, 其中, 所述装置为 GMLC, 该 GMLC 包括: 获取单元和计算单元, 其中,
获取单元, 设置为从 BSC或 RNC获取被定位终端的位置信息; 计算单元, 设置为根据所述获取单元获取到的位置信息, 进行定位计 算, 得到被定位终端的定位结果。
8、 根据权利要求 7所述的设置为实现定位的装置, 其中, 所述 GMLC 还包括接收单元, 设置为接收定位客户端发送的移动定位协议请求;
所述获取单元, 还设置为在所述接收单元接收到所述移动定位协议请 求后, 从 BSC或 RNC获取被定位终端的位置信息。
9、 根据权利要求 7 或 8 所述的设置为实现定位的装置, 其中, 所述 GMLC还包括发送单元, 设置为将所述计算单元得到的定位结果发送给定 位客户端。
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