CN1852591B - Method for positioning mobile terminal - Google Patents

Method for positioning mobile terminal Download PDF

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CN1852591B
CN1852591B CN 200510118391 CN200510118391A CN1852591B CN 1852591 B CN1852591 B CN 1852591B CN 200510118391 CN200510118391 CN 200510118391 CN 200510118391 A CN200510118391 A CN 200510118391A CN 1852591 B CN1852591 B CN 1852591B
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mobile terminal
neighboring
cell
rnc
signal
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CN1852591A (en
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杨平
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华为技术有限公司
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Abstract

When mobile terminal in non-soft switch area, RNC determines current location of mobile terminal based on multiple distance values from mobile terminal to base stations in each neighboring cell as well as ToA distance value between mobile terminal to base station in current cell. The invention raises accuracy for positioning mobile terminal

Description

一种定位移动终端的方法 A method of locating a mobile terminal

技术领域 FIELD

[0001] 本发明涉及移动通信系统中的定位技术,特别涉及一种定位移动终端的方法。 [0001] The present invention relates to a positioning technique in a mobile communication system, and more particularly to a method for locating a mobile terminal.

背景技术 Background technique

[0002] 无线定位技术的研究始于20世纪60年代的自动车辆定位系统,随后该技术在公共交通、出租车调度以及安全追踪等范围内广泛应用。 Studies [0002] wireless location technology, automatic vehicle location system began in the 60s of the 20th century, then the technology is widely used in a range of public transportation, taxi dispatch and safety tracing. 后来,随着人们对基于位置的信息服务的需求增多,无线定位技术得到更多研究者的关注,全球定位系统(GPS)的出现更使得无线定位技术产生了质的飞跃,定位精度得到大幅度的提高。 Later, with the increase in demand for location-based information services, wireless location technology has been paid more attention to the researchers, the emergence of a global positioning system (GPS) wireless location technology makes more produced a qualitative leap, positioning accuracy has been greatly It improved.

[0003] 在宽带码分多址(WCDMA)系统中,定义了三种定位技术,即小区标识(Cell-ID)、观察到达时间差(OTDOA)和辅助GPS(A-GPS),其中,OTDOA和A-GPS都对WCDMA系统或WCDMA系统中的移动终端提出了较高要求,前者增加了WCDMA系统的网络成本,后者增加了移动终端的成本,而且A-GPS还受移动终端所处环境的制约。 [0003] In wideband code division multiple access (WCDMA) system, we define three positioning technology, i.e. the cell identity (Cell-ID), observed time difference of arrival (the OTDOA) and an auxiliary GPS (A-GPS), wherein, the OTDOA and are a-GPS system to the WCDMA system or WCDMA mobile terminal requirements made higher, increasing the cost of the network former WCDMA system, which increases the cost of the mobile terminal, and the a-GPS terminal is also affected by the environment in which the mobile constraints. Cell-ID实现最简单,但精度也最差。 Cell-ID to achieve the most simple, but the worst accuracy.

[0004] 因此,提出了增强型Cell-ID定位技术,即小区标识结合往返时间(CIRTT)定位方法,该定位方法的实现过程为:首先,无线网络控制器(RNC)向移动终端发送信号收发时间差(Rx-Tx Time Difference)测量请求,并根据移动终端的标识,确定移动终端当前所属的小区(一个或多个),向移动终端当前所属小区的基站发送信号往返时间(RTT) 测量请求;其次,移动终端当前所属小区的基站测试与移动终端之间的信号往返时间(RTT),接收到测量请求的移动终端测试自身的Rx-Tx Time Difference;再次,移动终端当前所属小区的基站将测量到的RTT发送给RNC,同时移动终端将测量到的Rx-Tx Time Difference值也发送给RNC ;最后,RNC根据公式(RTT -Rx-Tx Time Difference)/2得到到达时间(ToA),进而根据公式(RTT -Rx-Tx Time Difference)X光速/2得到ToA距离值,确定移动终端当前所处的位置。 [0004] Thus, the proposed enhanced Cell-ID location technology, i.e. the cell identifier binding round trip time (CIRTT) positioning method, the positioning method implementation is as follows: First, the radio network controller (RNC) sends a signal to the mobile terminal transceiver the time difference (Rx-Tx time difference) measurement request, and according to the identifier of the mobile terminal, determining the cell the mobile terminal currently belongs (s), the transmission signal round trip time (RTT) to the base station currently belongs cell mobile terminal measurement request; Secondly, the mobile terminal is currently signal round trip time (RTT) between the base station and the mobile terminal belongs test cell, the mobile terminal receives the measurement request tests its Rx-Tx time Difference; again, the base station of the current cell belongs to a mobile terminal the measurement RTT is sent to the RNC to, while the mobile terminal compares the measured Rx-Tx time Difference value is also sent to the RNC; Finally, RNC (RTT -Rx-Tx time Difference) / 2 to obtain an arrival time (the ToA) according to the formula, according to further equation (RTT -Rx-Tx Time Difference) X speed of light / 2 obtained from the ToA value, determining the position of the mobile terminal is currently located.

[0005] 采用CIRTT定位方法,对于处于非软切换区的移动终端,由于RNC只能获取到移动终端当前所属一个小区的基站与移动终端之间的RTT,结合移动终端的Rx-Tx Time Difference得到ToA距离值,因此定位移动终端的范围对于全向小区来说是一个圆环,对于扇形小区来说是一个弧环。 [0005] The CIRTT positioning method for the mobile terminal is in a soft handover region, since the RTT between the RNC can obtain the current cell belongs to a mobile terminal the base station and the mobile terminal, the mobile terminal binding Rx-Tx Time Difference give ToA distance value, and therefore the scope for locating a mobile terminal to a cell is a full circle, for an arc sector is cell ring. 如图1所示,图1为现有技术采用CIRTT定位方法定位处于非软切换区的移动终端的示意图。 1, FIG. 1 is a prior art schematic positioning method is employed CIRTT mobile terminal in a soft handoff region is positioned.

[0006] 采用CIRTT定位方法,对于处于软切换区的移动终端,由于RNC能够获取到移动终端当前所属多个小区的基站与移动终端之间的多个RTT,结合移动终端的Rx-Tx TimeDifference得到多个ToA距离值,从而对于全向小区可以得到多个圆环,对于扇形小区可以得到多个弧环,通过这多个圆(弧)环之间的交点,就能够定位移动终端的具体位置。 [0006] The CIRTT positioning method for the mobile terminal in soft handover region, since the RNC can obtain a plurality of RTT between the current cell belongs to a plurality of base stations and mobile terminals including mobile terminals, in conjunction with the mobile terminal Rx-Tx TimeDifference give ToA plurality of distance values, so that the whole can be obtained to a specific location of a plurality of annular cells, cells can be obtained for a plurality of fan-shaped arc of the ring, through which a plurality of circular (arc) the intersection between the rings, can be positioned with respect to the mobile terminal . 如图2所示,图2为现有技术采用CIRTT定位方法定位处于软切换区的移动终端的示意图。 2, FIG. 2 is a prior art schematic view of the positioning using the positioning method CIRTT mobile terminal is in a soft handover region.

[0007] 采用CIRTT定位方法定位移动终端存在着缺点,第一,对于处于非软切换区的移动终端定位,由于RNC只能获取到移动终端当前所属一个小区的基站与移动终端之间的RTT,因此能够定位移动终端的范围将只能是一个圆(弧)环,位置不确定并且范围较大;第二,对于处于软切换区的移动终端定位,虽然RNC可以获取到多个RRT从而确定移动终端的具体位置,但在WCDMA系统中,移动终端的软切换只占到一个较小的比例,即移动终端处于软切换区的概率较小,在大多数情况下移动终端处于非软切换区, 因此,在大多数情况下对移动终端的定位仍然存在位置不确定并且范围较大的问题。 [0007] The positioning method for locating a mobile terminal CIRTT there is a drawback, first, for the mobile terminal is in a soft handover region positioned, since the RTT between the RNC can obtain the current cell belongs to a mobile terminal the base station and the mobile terminal, the scope of the mobile terminal will be able to locate only a circular (arc) ring, and a large range of location uncertainty; second, for the mobile terminal in soft handover region positioned, although the RNC can be acquired to determine a plurality of mobile RRT the specific location of the terminal, but in a WCDMA system, a soft handover of a mobile terminal only to a smaller scale, i.e., the mobile terminal is in a low probability of a soft handover region, in most cases the mobile terminal is in a soft handover region, Thus, in most cases the positioning of the mobile terminal and location uncertainty still exists a wide range of problems. [0008] 因此,采用CIRTT定位方法定位移动终端,总的来说定位精度比较低。 [0008] Thus, using the method of locating a mobile terminal CIRTT positioning, positioning accuracy is relatively low in general.

发明内容 SUMMARY

[0009] 有鉴于此,本发明的主要目的在于提供一种定位移动终端的方法,该方法能够 [0009] In view of this, the main object of the present invention is to provide a method for locating a mobile terminal, which can be

在移动终端处于非软切换区时提高定位移动终端的定位精度。 Increase when the mobile terminal is in a soft handover region positioning accuracy of positioning the mobile terminal.

[0010] 根据上述目的,本发明的技术方案是这样实现的: [0010] According to the above-described object, the technical solution of the present invention is implemented as follows:

[0011] —种定位移动终端的方法,无线网络控制器RNC保存各个小区的信号传播模型,该方法包括:A、当RNC根据从移动终端当前所属小区的基站接收的往返时间RTT 和从移动终端接收的收发时间差Rx-Tx Time Difference计算,只得到移动终端到一个当前所属小区的基站之间的到达时间ToA距离值时,向移动终端发送邻区测量控制信号; [0012] B、移动终端向RNC上报各个邻区的下行路径损耗值或从各个邻区所接收到信号的信号强度; [0011] - method of locating a mobile terminal, radio network controller RNC saving signal propagation models for the respective cells, the method comprising: A, when the RTT according to the RNC received from the base station to the mobile terminal currently belongs and a cell from the mobile terminal receiving transceiver time difference Rx-Tx time difference calculation, only to give the mobile terminal to a current distance value of the arrival time ToA between the base station belongs cell transmits neighboring measurement control signal to the mobile terminal; [0012] B, the mobile terminal to RNC reports the downlink path loss value of each neighboring cell or neighboring cell received from the respective signal strength signal;

[0013] C、 RNC将上报的各个邻区的下行路径损耗值对应RNC保存的各个邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值;或者根据上报的从各个邻区所接收到信号的信号强度和各个邻区的发射信号的信号强度计算得到移动终端到各个邻区的下行路径损耗值后,对应RNC预先保存的各个邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值; [0013] C, the downlink path loss value reported by the RNC corresponding to each neighboring signal propagation model stored in each RNC neighboring cell, the mobile terminal to obtain a plurality of distance values ​​between the respective neighboring base stations; or according to the reported the signal strength calculating received from the respective neighbor to a transmit signal strength of the signal and each neighboring cell is obtained the mobile terminal to the downlink path loss value of each neighboring cell, a signal propagation model corresponding RNC pre-stored for each neighboring cell, to give mobile terminal to the plurality of distances between the respective neighboring base stations;

[0014] D、 RNC根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前 [0014] D, RNC mobile terminal according to the plurality of distance values ​​between the mobile terminal and each base station neighboring to the current

所属小区的基站之间的ToA距离值确定移动终端当前所在的位置。 ToA distance value between the base station belongs in the cell to determine current location of the mobile terminal.

[0015] 步骤A所述的Rx-Tx Time Difference是由移动终端测试得到的。 Rx-Tx Time Difference [0015] Step A by the mobile terminal according to tests.

[0016] 在步骤A之前,该方法还包括: [0016] Before step A, the method further comprising:

[0017] Al、 RNC向移动终端发送Rx-Tx Time difference测量请求,向移动终端当前所属小区的基站发送RTT测量请求; [0017] Al, RNC transmits Rx-Tx Time difference measurement request to the mobile terminal, the base station transmits the RTT measurement request cell the mobile terminal currently belongs;

[0018] A2、接收到RTT测量请求的移动终端当前所属小区的基站进行RTT测量,接收到Rx-Tx Time difference测量请求的移动终端进行Rx-Tx Time difference测量; [0019] A3、移动终端当前所属小区的基站将测量得到的RTT发送给RNC;移动终端将测量得到的Rx-Tx Time difference发送给RNC ; [0018] A2, received base station currently belongs to the cell of the mobile terminal RTT measurement request is RTT measurements, the receiving mobile terminal Rx-Tx Time difference measurement request is Rx-Tx Time difference measurement; [0019] A3, the mobile terminal is currently the cell of the base station belongs measured RTT transmitted to the RNC; measured by the mobile terminal Rx-Tx Time difference is sent to the RNC;

[0020] A4、 RNC采用公式(RTT-Rx-Tx Time Difference) X光速/2计算得到移动终端到移动终端当前所属小区的基站之间的ToA距离值; [0020] A4, RNC using Equation (RTT-Rx-Tx Time Difference) X speed of light / 2 to the mobile terminal ToA calculated distance value between the mobile station currently belongs to the cell terminal;

[0021] A5、 RNC判断是否计算得到一个以上的ToA距离值,如果是,执行步骤A6 ; 否则,执行步骤A; [0021] A5, RNC determines whether the calculated distance value obtained ToA more than one, if yes, step A6; otherwise, executing step A;

[0022] A6、 RNC根据一个以上的ToA距离值,得到移动终端当前所属小区分别定位移动终端的多个圆环或圆弧,将这些圆环或圆弧之间的交点作为移动终端当前所在的位置。 [0022] A6, RNC in accordance with one or more distance values ​​ToA obtain cell mobile terminal currently belongs are positioned a plurality of rings or arcs of the mobile terminal, the point of intersection between the circular ring or circular arc as the current location of the mobile terminal position. [0023] 当步骤B所述的移动终端上报各个邻区的下行路径损耗值时,邻区为同频邻区或者异频邻区; [0023] When step B, the mobile terminal reports the downlink path loss value of each neighboring cell, the same frequency for the neighboring inter-frequency neighboring cell or neighboring cell;

[0024] 当步骤B所述的移动终端上报所接收到信号的信号强度时,邻区为同频邻区、 异频邻区或异系统邻区。 [0024] Step B when the mobile terminal reports the received signal strength of the signal, for the neighboring intra-frequency neighbor, inter-frequency or inter-system neighboring neighbor.

[0025] 步骤B所述的下行路径损耗值的获得过程为: [0025] The process of obtaining a downlink pathloss value is the step B:

[0026] 移动终端从各个邻区接收到信号并且检测所接收信号的信号强度,并且通过各 [0026] The mobile terminal receives a signal from the respective neighbor and the detection signal intensity of the received signal, and through the

个邻区所广播的系统消息获取各个邻区的发射信号的信号强度,再计算各个邻区的发射 A neighboring cell system information broadcast transmission signal of each acquired signal strength of the neighboring cell, then calculating the respective neighboring emitter

信号的信号强度和接收信号的信号强度之差,获得各个邻区的下行路径损耗值。 Difference in signal strength and the signal strength of a received signal signal to obtain a downlink path loss value of each neighbor.

[0027] 步骤C所述各个邻区的发射信号的信号强度是RNC预先存储的; The signal strength of the transmitted signal [0027] Step C the respective neighboring RNC is stored in advance;

[0028] 步骤C所述计算得到移动终端到各个邻区的下行路径损耗值是各个邻区的发射 [0028] Step C the downlink to the mobile terminal calculated path loss value of each respective neighbor is transmitting the neighbor

信号的信号强度和接收信号的信号强度之差。 The difference between the signal strength and the signal strength signal of the received signal.

[0029] 步骤D所述的根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前所属小区的基站之间的ToA距离值确定移动终端当前所在的位置的过程为: [0030] RNC根据移动终端到各个邻区的基站之间的多个距离值得到各个邻区分别定位移动终端的多个圆环或圆弧,根据移动终端到当前所属小区的基站之间的ToA距离值得到移动终端当前所属小区定位移动终端的圆环或圆弧,将这些圆环或圆弧之间的交点作为移动终端的当前所在的位置。 [0029] The mobile terminals to a plurality of distance values ​​between the respective neighboring base stations and the mobile terminal to the ToA distance value between the current cell base station belongs is determined current location of a mobile terminal according to the procedure of step D: [0030] RNC to the mobile terminal a plurality of distances between the respective neighboring base stations to the respective neighboring worth are positioned a plurality of rings or arcs of the mobile terminal, the mobile terminal between the base station belongs to the ToA of the current cell It is worth to the ring or arcuate distance relevant to the current cell location of the mobile terminal the mobile terminal, the point of intersection between the circular ring or circular arc as the current location of the mobile terminal.

[0031] 步骤D所述的根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前所属小区的基站之间的ToA距离值确定移动终端当前所在的位置的过程为: [0032] 根据移动终端到当前所属小区的基站之间的ToA距离值和3GPP协议规定的测量误差确定移动终端的位置区域范围并分块,根据移动终端到各个邻区的基站之间的多个距离值,然后计算每个分块中心到各个邻区天线之间的距离与移动终端到各个邻区的基站的距离的差值的平方累加和,最后得到的具有最小的累加和的分块中心,将该分块中心位置作为移动终端当前所在的位置。 [0031] The mobile terminals to a plurality of distance values ​​between the respective neighboring base stations and the mobile terminal to the ToA distance value between the current cell base station belongs is determined current location of a mobile terminal according to the procedure of step D: [0032] the mobile terminal according to the current value of the distance between the ToA cell base station belongs and a predetermined measurement error 3GPP protocol to determine the position of the mobile terminal and regional block, a plurality of the mobile terminal between the base station of each neighboring cell distance values, and then calculates the difference of each block to the center of the distance between the mobile terminal to the base station of each neighboring antenna of each neighboring cell and the accumulated square of the distance, the center block having the smallest accumulated sum of the resulting , the center position of the block as the current location of the mobile terminal.

[0033] 所述的每个分块中心到各个邻区天线之间的距离的获得过程为: [0033] The center of each block according to the process of obtaining the distance between the respective neighboring antennas:

[0034] RNC预先保存各个邻区的天线位置,根据分块中心的位置和RNC预先保存的各 [0034] RNC previously stored location of each neighboring antenna, the position of the center block and pre-stored in each RNC

个邻区的天线位置计算每个分块中心到各个邻区天线之间的距离。 The distance between the center of each block to the respective antenna position neighboring antenna neighbor Zone.

[0035] RNC存储各个小区的扇区信息,所述确定移动终端的位置区域范围还根据RNC 所存储的移动终端所属小区的扇区信息。 [0035] RNC storage sector information of each cell, determining the sector location area information of the mobile terminal also belongs to the scope of mobile terminal according to a cell stored in the RNC.

[0036] 所述分块的方法为等间距分块方法或等弧长分块方法。 [0036] The method of the block for block equal pitch arc length method or the like method block. 从上述方案可以看出, 当移动终端处于非软切换区时,本发明的RNC根据移动终端到各个邻区的基站之间的多个距离值和采用现有技术得到的移动终端到当前所属小区的基站之间的ToA距离值确定终端的具体位置,而不是像现有技术那样只根据移动终端到当前所属小区的基站之间的ToA距离值确定移动终端的具体位置,从而提高了定位移动终端的定位精度。 From the above embodiment, when the mobile terminal is in soft handover region, the present invention is the RNC to a plurality of distance values ​​between the respective neighboring base stations mobile terminal according to the prior art and uses a mobile terminal currently belongs to the cell obtained ToA distance values ​​between base stations to determine the specific location of the terminal, rather than merely determine the specific location of the mobile terminal to the ToA distance value between the current cell base station belongs the mobile terminal as in the prior art, thereby improving the positioning of the mobile terminal positioning accuracy.

附图说明 BRIEF DESCRIPTION

[0037] 图1为现有技术采用CIRTT定位方法定位处于非软切换区的移动终端的示意图。 [0037] FIG. 1 is a prior art schematic positioning method is employed CIRTT mobile terminal in a soft handoff region is positioned.

[0038] 图2为现有技术采用CIRTT定位方法定位处于软切换区的移动终端的示意图。 [0038] FIG. 2 is a prior art schematic positioning method is employed CIRTT mobile terminal positioning soft handover region. [0039] 图3为本发明定位移动终端的方法一流程图。 [0039] FIG. 3 is a flowchart of a method for locating a mobile terminal of the present invention. [0040] 图4为本发明定位移动终端的方法二流程图。 [0040] FIG 4 is a flowchart of a method for locating mobile terminals two of the present invention. [0041] 图5为本发明所确定移动终端的位置区域和分块示意图。 [0041] FIG. 5 and the location area of ​​the mobile terminal of the determined block schematic diagram of the present invention.

具体实施方式 Detailed ways

[0042] 为了使本发明的目的、技术方案和优点更加清楚明白,以下举具体实施例并参照附图,对本发明进行进一步详细的说明。 [0042] To make the objectives, technical solutions, and advantages of the present invention will become apparent from, the following specific examples cited with reference to the accompanying drawings, the present invention will be further described in detail.

[0043] 为了提高定位移动终端的定位精度,本发明采用下述方法。 [0043] In order to increase the positioning accuracy of locating a mobile terminal, the present invention adopts the following method.

[0044] 当移动终端处于软切换区时,采用现有技术提供的方法定位移动终端。 [0044] When the mobile terminal is in soft handover region, the prior art method of locating mobile terminals provided.

[0045] 本发明在RNC中预先保存各个小区的信号传播模型,当移动终端处于非软切换 [0045] In the present invention, the RNC pre-stored signal propagation models for the respective cell, when the mobile terminal is in soft handover

区时,首先,RNC向移动终端发送邻区测量控制信号;其次,接收到邻区测量控制信号 Time zone, first, the RNC transmits the neighbor cell to the mobile terminal a control signal; secondly, the received neighboring cell measurement control signal

的移动终端向RNC上报自身检测到的各个邻区的下行路径损耗值,邻区可以为同频邻区 Mobile terminal to report its respective downlink path loss value of the detected neighbor to the RNC, may be neighboring intra-frequency neighbor

或者异频邻区;最后,RNC将所得到的各个邻区的下行路径损耗值对应预先存储的各个 Or inter-frequency neighbor cell; Finally, RNC downlink path to each neighboring cell corresponding to the obtained loss value previously stored respective

邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值,RNC根据移 Neighboring signal propagation model, the mobile terminal to obtain a plurality of distance values ​​between the respective neighboring base stations, the RNC of the transfer

动终端到各个邻区的基站之间的多个距离值和采用现有技术得到的移动终端到当前所属 A plurality of distance values ​​to the mobile terminal and the mobile terminal using the prior art between a base station obtained the respective neighbor belongs to the current

小区的基站之间的ToA距离值确定移动终端的具体位置。 ToA distance value between a base station cell determine the specific location of the mobile terminal.

[0046] 在RNC中预先保存的各个小区的信号传播模型分别定义了所对应小区的信号传播损耗特性,本发明根据各个邻区的信号传播模型和移动终端上报的各个邻区的下行路径损耗值就可以确定各个邻区的基站到移动终端之间的距离值。 [0046] The signal propagation model in the RNC pre-stored in each cell are defined the signal propagation loss characteristic of the corresponding cell, the downlink path according to the present invention is based on the signal propagation model and the mobile terminal of each neighboring cell reported by each neighbor loss value the base station can be determined to a respective neighbor distance value between the mobile terminal.

[0047] 移动终端检测各个邻区的下行路径损耗值的过程为:首先,移动终端从各个邻区接收到信号并且检测所接收信号的信号强度,其次,移动终端通过各个邻区所广播的系统消息中获取各个邻区的发射信号的信号强度;最后,移动终端计算各个邻区的发射信号的信号强度和所接收信号的信号强度之差,得到各个邻区的下行路径损耗值。 Downstream route process loss value of the [0047] mobile terminal detects respective neighboring: firstly, the mobile terminal receives from each neighbor signal and the detection signal intensity of the received signal, secondly, the mobile terminal by the respective neighbor broadcast system transmitting message signals each acquired signal strength of the neighboring cell; and finally, the difference between the signal strength of the mobile terminal calculates the transmission signal of each neighboring cell signal strength and the received signal to obtain a downlink path loss value of each neighbor. [0048] 当移动终端不支持上报各个邻区的下行路径损耗值的功能时,本发明还可以使移动终端向RNC上报从各个邻区所接收到信号的信号强度,RNC再根据移动终端上报的从各个邻区所接收到信号的信号强度和各个邻区的发射信号的信号强度计算得到各个邻区的下行路径损耗值。 [0048] When the functions of the mobile terminal does not support reported by each neighbor downlink path loss value, the present invention also allows the mobile terminal reported by the RNC received from the respective neighbor signal strength of a signal to, RNC and then reported to the mobile terminal received from each neighboring cell to the transmission signal strength of the signal and each neighboring cell signal strength of the downlink path loss value calculated from the respective neighboring cell. 各个邻区的发射信号的信号强度是RNC预先存储的。 The signal intensity of the emitted signal of each neighboring RNC is stored in advance. [0049] 当移动终端的邻区为异系统邻区时,本发明也采用移动终端向RNC上报从该邻区所接收到信号的信号强度,由RNC根据所上报的所接收到信号的信号强度和该邻区的发射信号的信号强度计算得到该邻区的下行路径损耗值,该邻区的发射信号的信号强度是RNC预先存储的。 [0049] When a neighbor of the mobile terminal for the inter-system neighboring cell, the present invention also uses the signal strength of the mobile terminal is received from the neighboring cell to the RNC reports the signal is received by the RNC based on the reported the signal strength of the signal the signal strength of the transmitted signal and the neighboring downlink path loss value calculated by the neighboring cell, the signal intensity of the emitted signal in the neighboring RNC is stored in advance.

[0050] RNC根据移动终端到各个邻区的基站之间的多个距离值和采用现有技术得到的移动终端到当前所属小区的基站之间的ToA距离值确定移动终端的具体位置有两种方法,以下对这两种方法分别进行说明。 [0050] RNC and a plurality of distance values ​​obtained using the related art mobile terminal between base stations of respective neighboring ToA distance value between the current base station belongs in the cell to determine the mobile terminal according to the specific location of the mobile terminal has two method, the following two methods are described separately.

[0051] 第一种方法,RNC根据移动终端到各个邻区的基站之间的多个距离值得到各个邻区分别定位移动终端的多个圆(弧)环,根据采用现有技术得到的移动终端到当前所属小区的基站之间的ToA距离值得到移动终端当前所属小区定位移动终端的圆(弧)环,这些圆环或圆弧之间的交点就是移动终端的具体位置。 [0051] The first method, the RNC to a plurality of distances between the respective neighboring base stations worth respectively positioned to the respective plurality of neighboring circular (arc) of the mobile terminal The mobile terminal rings according to the prior art using mobile obtained ToA terminal to the current distance between the cell base station belongs to a variety of cell the mobile terminal currently belongs positioning circle (an arc) of the mobile terminal rings, the intersection between the arc or ring is to the specific location of the mobile terminal.

[0052] 图3为本发明定位移动终端的方法一的流程图,其具体步骤为:[0053] 步骤300、 RNC向移动终端发送Rx-Tx Time difference测量请求,RNC根据移动终端的标识,确定移动终端当前所属小区(一个或多个),向移动终端当前所属小区的基站发送RTT测量请求。 [0052] FIG method of locating a mobile terminal 3 is a flowchart of the present invention, including the following steps: [0053] Step 300, RNC transmits Rx-Tx Time difference measurement request to the mobile terminal, the RNC according to the identifier of the mobile terminal, determining currently belongs cell (one or more) mobile terminals, the base station transmits RTT measurement request to the mobile terminal currently belongs cell.

[0054] 本发明RNC对在专用信道连接状态下的移动终端发起定位相关测试,如果移动终端当前处于非专用信道连接状态,则RNC通过寻呼等方式将移动终端转移到专用信道连接状态后再发起定位相关测试。 [0054] RNC to the present invention, a mobile terminal in a dedicated channel connection state initiated location-related test, if the mobile terminal is currently in a non-dedicated channel connection state, the RNC paging the like manner of the mobile terminal to a dedicated channel connection state after initiate a positioning related tests.

[OO55] 步骤301、接收到RTT测量请求的移动终端当前所属小区( 一个或多个)的基站进行RTT测量,接收到Rx-Tx Time difference测量请求的移动终端进行Rx-Tx Time difference领lj量。 [OO55] Step 301, receiving the current cell belongs to (one or more) mobile terminals RTT measurement request RTT measurements of the base station, Rx-Tx Time difference amount lj collar receiving mobile terminal Rx-Tx Time difference measurement request be .

[0056] 步骤302、移动终端当前所属小区( 一个或多个)的基站将测量得到的RTT发送给RNC ;移动终端将测量得到的Rx-Tx Time difference发送给RNC。 [0056] Step 302, the base station belongs to the current cell (s) the mobile terminal transmits the measured RTT to the RNC; measured by the mobile terminal Rx-Tx Time difference sent to the RNC. [0057] 步骤303 、 RNC采用公式ToA距离值=(RTT-Rx-Tx Time Difference) X光速/2计算得到移动终端到移动终端当前所属小区( 一个或多个)的基站之间的ToA距离值。 [0057] Step 303, RNC ToA distance value using a formula = (RTT-Rx-Tx Time Difference) X speed of light / 2 to the mobile terminal ToA calculated distance value between a base station currently belongs cell (s) of the mobile terminal . [0058] 步骤304、 RNC判断是否计算得到一个以上的ToA距离值,如果是,执行步骤305;否则,执行步骤306。 [0058] Step 304, RNC determines whether or not the calculated distance is more than one ToA value, if yes, perform step 305; otherwise, step 306 is performed.

[0059] 步骤305、 RNC根据一个以上的ToA距离值,得到移动终端当前所属小区分别定位移动终端的多个圆(弧)环,将这些圆(弧)环之间的交点作为移动终端当前所在的位置。 [0059] Step 305, RNC in accordance with one or more distance values ​​ToA obtain current cell belongs to a plurality of mobile terminals are positioned circular (arc) of the mobile terminal rings, the point of intersection between the circle (an arc) where the mobile terminal as the current ring s position.

[0060] 步骤306、 RNC向移动终端发送邻区测量控制信号。 [0060] Step 306, RNC transmits neighboring cell measurement control signal to the mobile terminal.

[0061] 步骤307、接收到邻区测量控制信号的移动终端对邻区进行测量,并向RNC上报自身检测到的各个邻区的下行路径损耗值。 [0061] Step 307, the received neighboring cell measurement control signal to the mobile terminal to measure neighboring cell, and reports the downlink path loss value of each neighbor to its own detected RNC.

[0062] 本发明的移动终端也可以向RNC上报从各个邻区所接收到信号的信号强度。 [0062] The mobile terminal according to the present invention can also report the signal strength of the received signal from each neighbor to the RNC. [0063] 步骤308、 RNC判断在设定的时间内是否接收到测量结果,如果是,执行步骤310 ;否则,执行步骤309。 [0063] Step 308, RNC receives the measurement result is determined whether within a set period of time, if yes, perform step 310; otherwise, step 309 is executed.

[0064] 步骤309、 RNC根据步骤303计算得到的ToA距离值,得到移动终端当前所属小区定位移动终端的圆(弧)环,将该圆(弧)环作为移动终端当前所在的位置。 [0064] Step 309, RNC according ToA distance value calculated in step 303, the mobile terminal currently belongs to obtain cell positioning circle (an arc) of the mobile terminal rings, the circle (an arc) ring as a current location of the mobile terminal. [0065] 步骤310、 RNC将所得到的各个邻区的下行路径损耗值对应预先存储的各个邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值,得到各个邻区分别定位移动终端的多个圆(弧)环,并且采用步骤309得到移动终端当前所属小区定位移动终端的圆(弧)环,将这些圆(弧)环之间的交点作为移动终端当前所在的位置,结束。 [0065] Step 310, RNC downlink path loss values ​​of each of the obtained neighboring cell corresponding to the respective signal propagation model of the neighboring pre-stored, the mobile terminal to obtain a plurality of distance values ​​between the respective neighboring base stations, each obtained are positioned a plurality of neighboring circular (arc) of the mobile terminal ring, and is employed in step 309 to obtain a circular (arc) cycloalkyl mobile terminal currently belongs, cell location of the mobile terminal, the point of intersection between the circle (an arc) ring as a mobile terminal is currently the location of the end.

[0066] 当移动终端上报的是从各个邻区所接收到信号的信号强度时,RNC根据所上报的从各个邻区所接收到信号的信号强度和各个邻区的发射信号的信号强度之差,得到各个邻区的下行路径损耗值后,再执行步骤310。 [0066] When the mobile terminal reported is received from each neighboring signal strength of the signal, RNC difference signal intensities of the transmitted signal's signal strength reports received from each neighboring signal and the respective neighbor based , to give the downlink path loss value of each neighboring cell, then step 310 is performed.

[0067] 采用图3所述的方法,虽然可以在移动终端处于非软切换区时提高定位移动终端的定位精度,但是由于移动终端的各个邻区的信号在传播过程中的衰减特性受环境影响很大,且信号本身也存在一定的波动性,因此RNC预先存储的各个小区的信号传播模型也很难准确地反映每一次实际情况。 [0067] using the method of FIG. 3, increase the positioning accuracy when locating a mobile terminal in a non Although soft handover region in a mobile terminal, but because of the attenuation characteristics of the signal of each neighboring cell of the mobile terminal in the communication process is affected by the environment large, and the signal itself, there are some volatility, the signal propagation model of each cell stored in the RNC in advance is difficult to accurately reflect the actual situation of each time. 如果简单地采用步骤310确定移动终端当前所在的位置,算法鲁棒性不够好,同时所定位的移动终端的具体位置可能存在较大偏差。 If step 310 determines simply using current location of the mobile terminal, the robustness of the algorithm is not good enough, while locating the specific location of the mobile terminal may be a big deviation. 因6/7页 Because 6/7

此,本发明提出了第二种方法。 Here, the present invention provides a second method.

[0068] 第二种方法,考虑到测量误差和非视线(NLOS)传播引起的距离偏差,该方法首先根据移动终端到当前所属小区的基站之间的ToA距离值确定移动终端的位置区域范围,对此区域范围进行分块,然后再根据分块中心的位置和RNC预先保存的各个小区的天线位置计算每个分块中心到各个邻区天线之间的距离,再计算每个分块中心到各个邻区天线之间的距离与移动终端到各个邻区的基站的距离的差值的平方累加和,最后得到的具有最小的累加和的分块中心,将该分块中心位置作为移动终端当前所在的位置。 [0068] The second method, taking into account the measurement errors and the non-line of sight (the NLOS) propagation distance deviation caused by the method firstly the current value of the distance between the ToA cell base station belongs range determined location area of ​​the mobile terminal The mobile terminal, this area range is divided into blocks, and each block of the distance between the center of each neighboring antenna to an antenna according to the recalculated position of the center block and the RNC in each cell is stored in advance, and then to calculate the center of each block squared difference of the distance between the mobile terminal and each neighbor base station antennas to the respective neighboring and cumulative distance, and having minimum cumulative center of the resulting block, the block as the center position of the mobile terminal is currently It is located. [0069] 其中,移动终端到各个邻区的距离可以采用图3所述的部分步骤。 [0069] wherein, the mobile terminal from the respective neighboring portion of the step of FIG. 3 may be employed. [0070] 图4为本发明的定位移动终端的方法二流程图,其具体步骤为: [0071] 步骤400〜409、采用步骤300〜309所叙述的过程。 The method of locating a mobile terminal two flowchart [0070] FIG. 4 of the present invention, including the following steps: [0071] Step 400~409, 300~309 using process steps as described.

[0072] 步骤410、 RNC根据步骤303计算得到的ToA距离值、预先保存的扇区信息、 NLOS引入偏差以及测量误差得到移动终端当前所属小区定位移动终端的位置区域。 [0072] Step 410, RNC according ToA distance value calculated in step 303, the sector information stored in advance, and the NLOS bias introduced into the measured cell belongs to a location area to obtain error locating mobile terminals in the mobile terminal is currently. [0073] 根据3GPP协议,RTT测量精度为+-0.5chips,量化精度1/16chips,量化误差+-l/32chips ; Rx-Tx Time Difference Type 1领lj量精度+-1.5chips, 量4七精度lchips, 量4七误差+-0.5chips ; Rx-Tx Time Difference Type 2领lj量精度+-lchips, 量化精度1/16chips, 量化误差+-l/32chips。 [0073] According to 3GPP protocol, RTT measurement accuracy of + -0.5chips, quantization accuracy 1 / 16chips, the quantization error of + -l / 32chips; Rx-Tx Time Difference Type 1 Precision of collar lj + -1.5chips, the accuracy of the amount of seven 4 lchips, the amount of error of seven 4 + -0.5chips; Rx-Tx Time Difference Type 2 precision of collar lj + -lchips, quantization accuracy 1 / 16chips, the quantization error of + -l / 32chips. NLOS引入偏差RNLOS与环境相关, 一般可以取0〜200m范围。 RNLOS NLOS bias introduced environment-related, generally take 0~200m range. 由此可以得到ToA距离值的上限以及下限: [0074] 使用Type 1测量时: An upper limit and a lower limit can be obtained from the ToA values: [0074] Type 1 measurements using:

[0075] ToA距离值下限1 = ToA距离值+(-0.5chips-l/32chips-1.5chips-0.5chips)X光速/2 = ToA距离值-98m [0075] ToA distance from the lower limit 1 = ToA value + (- 0.5chips-l / 32chips-1.5chips-0.5chips) X speed of light / 2 = ToA distance value -98m

[0076] ToA距离值上限1 = ToA距离值+(0.5chips+l/32chips+1.5chips+0.5chips) X光速/2+RNLOS = ToA距离值+98m+RNLOS [0077] 使用Type 2测量时: [0076] ToA distance from the upper limit 1 = ToA value + (0.5chips + l / 32chips + 1.5chips + 0.5chips) X speed of light / 2 + RNLOS = ToA distance value + 98m + RNLOS [0077] When using Type 2 Measurement:

[0078] ToA距离值下限2 = ToA距离值+(-0.5chips-l/32chips-lchips-l/32chips) X光速/2 =ToA距离值-59m [0078] ToA value from the lower limit 2 = ToA distance value + (- 0.5chips-l / 32chips-lchips-l / 32chips) X speed of light / 2 = ToA value from -59m

[0079] ToA距离值上限2 = ToA距离值+(0.5chips+l/32chips+lchips+l/32chips) X光速/2+RNLOS = ToA距离值+59m+RNLOS [0079] ToA distance from the upper limit value 2 = ToA + (0.5chips + l / 32chips + lchips + l / 32chips) X speed of light / 2 + RNLOS = ToA distance value + 59m + RNLOS

[0080] 本发明RNC根据ToA距离值上限以及ToA距离值下限就可以确定出移动终端的位置区域,如果预先在RNC中针对移动终端存储有扇区信息,则移动终端的位置区域是根据ToA距离值上限、ToA距离值下限以及扇区信息确定的。 [0080] According to the present invention RNC from the upper limit and a lower limit ToA ToA value can be determined from the location area of ​​the mobile terminal, if the sector in the RNC in advance the information stored for the mobile terminal, the mobile terminal is based on location area from the ToA upper limit, ToA and sector information from the lower limit of determination. 图5为本发明所确定移动终端的位置区域和分块示意图。 FIG location area of ​​the mobile terminal 5 and a block schematic diagram of the present invention is determined.

[0081] 步骤411、 RNC对移动终端的位置区域采用预先设定的方式分块,共分为N 块,各块的中心记为(Xn, Yn, Zn), n = 0,…,Nl。 [0081] Step 411, RNC location area of ​​the mobile terminal using a preset mode block, divided into N blocks, each block is referred to as a center (Xn, Yn, Zn), n = 0, ..., Nl.

[0082] 预先设置的方式可以为等间距或等弧长的方式,以及其他类似方式。 [0082] The embodiment may be set in advance at equal arc length spacing or the like manner, and other similar ways.

[0083] 步骤412、 RNC根据位置区域的分块结果和预先保存的各个邻区的天线位置, [0083] Step 412, RNC according to the position of the antenna block and a result of the position of the pre-stored region of respective adjacent areas,

分别计算各个分块中心到各个邻区天线之间的距离。 The distance between the center of each block to calculate the respective neighboring antennas.

[0084] 各个邻区的天线位置记为(X' m, Y' m, Z' m), m = 0,…,Ml,这里假设共得到M个邻区测量结果。 Antenna position [0084] of each neighboring referred to as (X 'm, Y' m, Z 'm), m = 0, ..., Ml, is assumed here to give a total of M neighbor measurements. 则分别得到各个分块中心到各个邻区天线之间的距离为Rnm =[(Xn-X, m)2+(Yn-Y, m)2+(Zn-Z, m)2]1/2, (n = 0,…,Nl, m = 0,…,Ml)。 Each block respectively to give the distance between the center of each neighboring antenna Rnm = [(Xn-X, m) 2+ (Yn-Y, m) 2+ (Zn-Z, m) 2] 1/2 , (n = 0, ..., Nl, m = 0, ..., Ml). [0085] 步骤413、 RNC将所得到的各个邻区的下行路径损耗值对应预先存储的各个邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值,记为R' m, m =0,…,Ml;计算各个分块中心到各个邻区天线之间的距离Rnm与R' m差值的平方 [0085] Step 413, the respective model signal propagation path to each neighboring downstream neighboring RNC resulting loss value corresponding to the previously stored, the mobile terminal to obtain a plurality of distance values ​​between the respective neighboring base stations, referred to as R 'm, m = 0, ..., Ml; Rnm and calculating a distance R between the center of each block to the respective neighboring antennas' m squared difference

累加和,即Rn2 = Z(及"m-及,爾》2 ,(n = 0,…,Nl)。 And accumulating, i.e. Rn2 = Z (and "m- and, Er" 2, (n = 0, ..., Nl).

[0086] 当移动终端上报的是从各个邻区所接收到信号的信号强度时,RNC根据所上报的从各个邻区所接收到信号的信号强度和各个邻区的发射信号的信号强度之差,得到各个邻区的下行路径损耗值后,再执行步骤413。 [0086] When the mobile terminal reported is received from each neighboring signal strength of the signal, RNC difference signal intensities of the transmitted signal's signal strength reports received from each neighboring signal and the respective neighbor based , to give the downlink path loss value of each neighboring cell, then step 413 is performed.

[0087] 步骤414、 RNC根据计算得到的Rn2, n = 0,…,Nl,取其中最小的^2对应的分块中心位置(Xn, Yn, Zn)作为移动终端当前所在的位置。 [0087] Step 414, RNC according to the calculated Rn2, n = 0, ..., Nl, ^ take the current location of the mobile terminal 2 corresponds to the smallest block center position (Xn, Yn, Zn) as a.

[0088] 当移动终端处于非软切换区时,本发明的RNC根据移动终端到各个邻区的基站 [0088] When the mobile terminal is in soft handover region, RNC according to the present invention a mobile terminal to a base station of each neighboring cell

之间的多个距离值和采用现有技术得到的移动终端到当前所属小区的基站之间的ToA距 And a plurality of distance values ​​obtained using the prior art between a mobile terminal between the base station belongs to the ToA of the current from the cell

离值确定终端的具体位置,而不是像现有技术那样只通过移动终端到所属小区的基站之 Value is determined from the specific location of the terminal, rather than the prior art by only the mobile terminal belongs to the cell of the base station

间的ToA距离值确定终端的具体位置,从而提高了定位移动终端的定位精度。 The distance between the ToA values ​​determine the specific location of the terminal, thereby improving the positioning accuracy of the positioning of the mobile terminal.

[0089] 更进一步地,为了使定位移动终端的定位精度更高,本发明采用基于移动终端 [0089] Still further, in order to make the positioning accuracy of the positioning of the mobile terminal later, the present invention is a mobile terminal based

到当前所属小区的基站之间的ToA距离值和测量误差确定移动终端的位置区域并分块, ToA of the current distance value between a base station belongs and the measurement cell area of ​​the mobile terminal to determine the position error and the block,

将移动终端到各个邻区的基站之间的多个距离值和各个分块中心到各个邻区之间的距离 The distance between the plurality of distance values ​​between the mobile terminal to each base station and each neighboring block to each neighboring cell center

进行计算,得到最符合的分块中心,将该分块中心位置作为移动终端当前所在的位置, Is calculated, to obtain the best match the center block, the center position of the block as the current location of the mobile terminal,

确保了定位移动终端位置的算法鲁棒性。 Ensuring the robustness of the algorithm to locate the mobile terminal location.

[0090] 本发明提供的方法不增加WCDMA系统的网络成本和移动终端成本,就能够完成移动终端的精确定位。 [0090] The present invention provides a method does not increase the cost of the mobile terminal and network cost WCDMA system, it is possible to complete the precise positioning of the mobile terminal.

[0091] 以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所做的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。 [0091] The foregoing is only preferred embodiments of the present invention but are not intended to limit the present invention, where any modifications within the spirit and principle of the present invention, equivalent substitutions and improvements should be included in the within the scope of the present invention.

Claims (11)

  1. 一种定位移动终端的方法,其特征在于,无线网络控制器RNC保存各个小区的信号传播模型,该方法包括:A、当RNC根据从移动终端当前所属小区的基站接收的往返时间RTT和从移动终端接收的收发时间差Rx-TxTime?Difference计算,只得到移动终端到一个当前所属小区的基站之间的到达时间ToA距离值时,向移动终端发送邻区测量控制信号;B、移动终端向RNC上报各个邻区的下行路径损耗值或从各个邻区所接收到信号的信号强度;C、RNC将上报的各个邻区的下行路径损耗值对应RNC保存的各个邻区的信号传播模型,得到移动终端到各个邻区的基站之间的多个距离值;或者根据上报的从各个邻区所接收到信号的信号强度和各个邻区的发射信号的信号强度计算得到移动终端到各个邻区的下行路径损耗值后,对应RNC预先保存的各个邻区的信号传播模型,得到移动终端到各 A method of locating a mobile terminal, wherein the radio network controller RNC saving signal propagation models for the respective cells, the method comprising: A, when the RTT according to the RNC received from the base station of the mobile terminal currently belongs and a cell from the mobile ? transceiving time difference Rx-TxTime received by the terminal difference calculation, only to give the mobile terminal to a current time of arrival ToA distance value between a base station belongs to a cell, and transmits the neighbor cell control signal to the mobile terminal; B, the mobile terminal reports to the RNC downlink path loss values ​​of the respective neighboring or received from each neighboring signal signal strength; C, the downlink path loss value RNC reports the respective neighboring corresponding signal propagation model RNC stored in the respective adjacent areas, to give a mobile terminal a plurality of distance values ​​between the respective neighboring base stations; or to give the mobile terminal to the downlink path to each neighboring calculate the signal strength of the transmitted signal received from the respective neighbor and the signal strengths reported by the respective neighboring signal after the loss value, the signal propagation model pre-stored corresponding to the respective RNC neighboring cell, the mobile terminal to each of the obtained 邻区的基站之间的多个距离值;D、RNC根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前所属小区的基站之间的ToA距离值确定移动终端当前所在的位置。 A plurality of distance values ​​between the neighboring base stations; D, RNC ToA value of the distance between the base station belongs in a cell is determined according to a current mobile terminal to the mobile terminal a plurality of distance values ​​between the mobile terminal and each base station neighboring to the current It is located.
  2. 2. 如权利要求1所述的方法,其特征在于,步骤A所述的Rx-Tx Time Difference是由移动终端测试得到的。 2. The method according to claim 1, wherein, Rx-Tx Time Difference is obtained in Step A by the mobile terminal testing.
  3. 3. 如权利要求1所述的方法,其特征在于,在步骤A之前,该方法还包括:Al、 RNC向移动终端发送Rx-Tx Time difference测量请求,向移动终端当前所属小区的基站发送RTT测量请求;A2、接收到RTT测量请求的移动终端当前所属小区的基站进行RTT测量,接收到Rx-Tx Time difference测量请求的移动终端进行Rx-Tx Time difference测量;A3、移动终端当前所属小区的基站将测量得到的RTT发送给RNC;移动终端将测量得到的Rx-Tx Time difference发送给RNC ;A4、 RNC采用公式(RTT-Rx-Tx Time Difference) X光速/2计算得到移动终端到移动终端当前所属小区的基站之间的ToA距离值;A5、 RNC判断是否计算得到一个以上的ToA距离值,如果是,执行步骤A6 ;否则,执行步骤A;A6、 RNC根据一个以上的ToA距离值,得到移动终端当前所属小区分别定位移动终端的多个圆环或圆弧,将这些圆环或圆弧之间的交点作为移动 3. The method according to claim 1, wherein prior to step A, the method further comprising: Al, RNC transmits Rx-Tx Time difference measurement request to the mobile terminal, the base station transmits to the RTT of the mobile terminal currently belongs cell measurement request; A2, received base station currently belongs to the cell of the mobile terminal RTT measurement request is RTT measurements, the receiving mobile terminal Rx-Tx Time difference measurement request is Rx-Tx Time difference measurement; A3, currently belongs to the cell of the mobile terminal the base station measured RTT is transmitted to the RNC; mobile terminal measured by the Rx-Tx Time difference to a RNC; A4, RNC using equation (RTT-Rx-Tx Time Difference) X speed of light / 2 calculated from the mobile terminal to the mobile terminal the current value of the distance between the ToA cell base station belongs; A5, RNC determines whether or not the calculated distance is more than one ToA value, if yes, step A6; otherwise, step a; A6, RNC ToA according to one or more distance values, to give the mobile terminal currently belongs cell are positioned a plurality of rings or arcs of the mobile terminal, the point of intersection between the circular ring or circular arc movement as 端当前所在的位置。 End position is currently located.
  4. 4. 如权利要求1所述的方法,其特征在于,当步骤B所述的移动终端上报各个邻区的下行路径损耗值时,邻区为同频邻区或者异频邻区;当步骤B所述的移动终端上报所接收到信号的信号强度时,邻区为同频邻区、异频邻区或异系统邻区。 4. The method according to claim 1, wherein said step B when the mobile terminal to report downlink path loss values ​​of the respective adjacent areas, the same frequency for the neighboring inter-frequency neighboring cell or neighboring cell; when the Step B when the mobile terminal reports the received signal strength of the signal, for the neighboring intra-frequency neighbor, inter-frequency or inter-system neighboring neighbor.
  5. 5. 如权利要求1所述的方法,其特征在于,步骤B所述的下行路径损耗值的获得过程为:移动终端从各个邻区接收到信号并且检测所接收信号的信号强度,并且通过各个邻区所广播的系统消息获取各个邻区的发射信号的信号强度,再计算各个邻区的发射信号的信号强度和接收信号的信号强度之差,获得各个邻区的下行路径损耗值。 5. The method according to claim 1, wherein the process of obtaining the downlink path loss value in step B is: a mobile terminal receives a signal from the respective neighbor and the detection signal intensity of the received signal, and by the respective system information broadcast neighbor acquired signal strength of the transmitted signal of each neighboring cell, and then calculates the difference between the signal strength and the signal strength of the received signal of each transmission signal of the neighbor, to obtain the downlink path loss value of each neighbor.
  6. 6. 如权利要求1所述的方法,其特征在于,步骤C所述各个邻区的发射信号的信号强度是RNC预先存储的;步骤C所述计算得到移动终端到各个邻区的下行路径损耗值是各个邻区的发射信号的信号强度和接收信号的信号强度之差。 6. The method according to claim 1, wherein the step of transmitting the signal strength of the signal C of the respective neighboring RNC is stored in advance; a step of the mobile terminal to C calculated downlink path loss of each neighboring value is the difference between the signal strength and the signal strength of a received signal of each transmission signal of the neighbor.
  7. 7. 如权利要求1所述的方法,其特征在于,步骤D所述的根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前所属小区的基站之间的ToA距离值确定移动终端当前所在的位置的过程为:RNC根据移动终端到各个邻区的基站之间的多个距离值得到各个邻区分别定位移动终端的多个圆环或圆弧,根据移动终端到当前所属小区的基站之间的ToA距离值得到移动终端当前所属小区定位移动终端的圆环或圆弧,将这些圆环或圆弧之间的交点作为移动终端的当前所在的位置。 7. The method according to claim 1, characterized in that, the ToA distance between the base station currently belongs to the cell a plurality of distance values ​​between base stations and mobile terminals of respective neighboring Step D according to the mobile terminal value determines current location of the mobile terminal for the process: RNC to the mobile terminal a plurality of distances between the respective neighboring base stations to the respective neighboring worth ring or a plurality of arcuate positioning of the mobile terminal, respectively, according to the mobile terminal ToA distance between the current cell base station belongs to the ring or arcuate worth current cell location of the mobile terminal belongs to the mobile terminal, the point of intersection between the circular ring or circular arc as the current location of the mobile terminal.
  8. 8. 如权利要求1所述的方法,其特征在于,步骤D所述的根据移动终端到各个邻区的基站之间的多个距离值和移动终端到当前所属小区的基站之间的ToA距离值确定移动终端当前所在的位置的过程为:根据移动终端到当前所属小区的基站之间的ToA距离值和3GPP协议规定的测量误差确定移动终端的位置区域范围并分块,根据移动终端到各个邻区的基站之间的多个距离值,然后计算每个分块中心到各个邻区天线之间的距离与移动终端到各个邻区的基站的距离的差值的平方累加和,最后得到的具有最小的累加和的分块中心,将该分块中心位置作为移动终端当前所在的位置。 8. The method according to claim 1, characterized in that, the ToA distance between the base station currently belongs to the cell a plurality of distance values ​​between base stations and mobile terminals of respective neighboring Step D according to the mobile terminal value determines current location of the mobile terminal process: ToA to the current base station belongs distance value between the measurement error and the cell specified in 3GPP protocol determines the position of the area range of the mobile terminal and the mobile terminal block, according to the respective mobile terminal a plurality of distance values ​​between the neighboring base station, and then calculates the difference of each block to the distance between the center of each neighboring mobile terminal to a base station antenna and each of the neighboring square of the distance and the accumulated, the resulting the center block having the smallest accumulated sum, as the center position of the block position of the current location of the mobile terminal.
  9. 9. 如权利要求8所述的方法,其特征在于,所述的每个分块中心到各个邻区天线之间的距离的获得过程为:RNC预先保存各个邻区的天线位置,根据分块中心的位置和RNC预先保存的各个邻区的天线位置计算每个分块中心到各个邻区天线之间的距离。 9. The method according to claim 8, wherein the center of each block of the process of obtaining the distance between the respective neighboring antennas: RNC previously saved position of each neighboring antenna, in accordance with block the distance between the center of each block to the respective neighboring antenna position the antenna and the center of each pre-stored RNC neighboring cell is calculated.
  10. 10. 如权利要求8所述的方法,其特征在于,RNC存储各个小区的扇区信息,所述确定移动终端的位置区域范围还根据RNC所存储的移动终端所属小区的扇区信息。 10. The method according to claim 8, characterized in that, each RNC stores cell sector information, the sector information to determine the location area of ​​the mobile terminal also belongs to the range of cells the mobile terminal stored in the RNC.
  11. 11. 如权利要求8所述的方法,其特征在于,所述分块的方法为等间距分块方法或等弧长分块方法。 11. The method according to claim 8, characterized in that the method is equally spaced block block block arc length method or the like method.
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