WO2006079242A1 - Method for measuring in wcdma system - Google Patents

Method for measuring in wcdma system Download PDF

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Publication number
WO2006079242A1
WO2006079242A1 PCT/CN2005/000109 CN2005000109W WO2006079242A1 WO 2006079242 A1 WO2006079242 A1 WO 2006079242A1 CN 2005000109 W CN2005000109 W CN 2005000109W WO 2006079242 A1 WO2006079242 A1 WO 2006079242A1
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inter
measurement
frequency
mobile station
intra
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French (fr)
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Bin Xu
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ZTE Corp
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ZTE Corp
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Priority to CN2005800423518A priority Critical patent/CN101073216B/zh
Priority to PCT/CN2005/000109 priority patent/WO2006079242A1/zh
Publication of WO2006079242A1 publication Critical patent/WO2006079242A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to an improved method of measuring a wideband code division multiple access system, and more particularly to a method for controlling the opening and closing of a WCDMA system and handover related measurement using position information of a mobile station. Background technique
  • the WCDMA system supports a very wide variety of measurement types, among which the correlation related to handover is mainly the measurement of the same frequency cell (intra-frequency measurement), the measurement of the inter-frequency cell (inter-frequency measurement) and the measurement of the different system cell (inter-system measurement).
  • intra-frequency measurement the measurement of the same frequency cell
  • inter-frequency measurement the measurement of the inter-frequency cell
  • inter-system measurement the measurement of the different system cell
  • UEs mobile stations
  • UEs mobile stations
  • the opening of these measurements adds extra overhead to the network, UE and airborne radio resources.
  • inter-frequency measurement and inter-system measurement often need to open the compressed mode, and the compression mode will increase the cell.
  • the load has a bad influence on the capacity of the cell; at the same time, the UE is limited by the volume and the battery capacity, and reducing the power consumption of the UE is also a very urgent problem.
  • the standby time of the UE is an important indicator for evaluating the performance of the WCDMA network. Under the premise of not affecting the execution of the switching function, the opening time of various types of switching-related measurements can be reduced as much as possible, which has a beneficial effect on both the network and the UE.
  • the purpose of the present invention is to enable the measurement required by the UE to be turned on in a targeted manner by using the location information of the UE, and to turn off the measurement that the UE does not need, so as to minimize the overhead caused by the measurement to the network, the UE, and the over-the-air radio resource.
  • the present invention provides a method of measurement in a WCDMA system, comprising the steps of:
  • Step a acquiring location information of an intra-frequency handover area, an inter-frequency handover area, and an inter-system handover area of the cell in the WCDMA system;
  • Step b determining location information of the mobile station accessing the cell
  • Step c comparing the location information of the mobile station with the location information of the handover area; and step d, turning on or off the intra-frequency measurement, the inter-frequency measurement, and the inter-system measurement according to the comparison result.
  • the step b further includes: Step M, the radio network controller in the WCDMA system measures a time difference of sending and receiving of the mobile station;
  • Step b2 the base station subsystem in the WCDMA system measures the loop delay of the corresponding wireless link of the mobile station, and periodically reports it to the radio network controller;
  • Step b3 The radio network controller calculates location information of the mobile station according to the transceiver time difference and loop delay.
  • the step d further includes the following steps: Step dl, if the result of the comparison in the step c is that the mobile station is in the intra-frequency switching region, the intra-frequency measurement is turned on. , otherwise the intra-frequency measurement is turned off;
  • Step d2 if the result of the comparison in the step c is that the mobile station is in the inter-frequency switching area, the inter-frequency measurement is turned on, otherwise the inter-frequency measurement is turned off; In step d3, if the result of the comparison in the step c is that the mobile station is in the inter-system handover area, the inter-system measurement is initiated, otherwise the inter-system measurement is turned off.
  • the step a obtains the switching position information by actual road test.
  • the step a and the step b further include the steps of: the mobile station accessing the cell, and the radio network controller in the WCDMA system establishes a service for the mobile station.
  • the step a and the step b further include the steps of: respectively, according to the position information of the intra-frequency switching area, the inter-frequency switching area, and the inter-system switching area, and using hysteresis parameters respectively Obtaining the position information of the intra-frequency measurement open area, the inter-frequency measurement open area, and the inter-system measurement open area, and the position information of the intra-frequency measurement closed area, the inter-frequency measurement closed area, and the inter-system measurement closed area
  • the step b further includes: Step bl, the radio network controller in the WCDMA system measures a time difference of sending and receiving of the mobile station;
  • Step b2 the base station subsystem in the WCDMA system measures the loop delay of the corresponding wireless link of the mobile station, and periodically reports it to the radio network controller;
  • Step b3 The radio network controller calculates location information of the mobile station according to the transceiver time difference and loop delay.
  • the step d further includes the following steps: Step dl, if the result of the comparison in the step c is that the mobile station is in the intra-frequency measurement open area, the intra-frequency is turned on. Measuring, the mobile station is in the intra-frequency measurement closed area, and the intra-frequency step d2 is turned off. If the result of the comparison in the step c is that the mobile station is in the inter-frequency measurement open area, the inter-frequency measurement is turned on. If the mobile station is in the inter-frequency measurement closed area, the inter-frequency measurement step d3 is turned off. If the result of the comparison in the step c is that the mobile station is in the inter-system measurement open area, the inter-system measurement is turned on. The inter-system measurement is turned off when the mobile station is in the inter-system measurement off zone.
  • Step dl if the result of the comparison in the step c is that the mobile station is in the intra-frequency measurement open area, the intra-frequency is turned on. Measuring, the mobile station is in the intra-
  • the method of the invention greatly shortens the opening time of the intra-frequency measurement, the inter-frequency measurement and the inter-system measurement, reduces the load of the system and the UE, increases the capacity of the system, and prolongs the UE. Standby time.
  • FIG. 1 is a schematic diagram of a handover area of a cell in a WCDMA system
  • Figure 2 is a schematic diagram of the results of different positioning methods
  • FIG. 3 is a schematic diagram of a signaling process for measuring UE location information
  • Figure 4 is a schematic diagram of a signaling flow for measuring RTT
  • Figure 5 is a flow chart of a method of measurement in a WCDMA system of the present invention. detailed description
  • the handover area 11 occupies a relatively small area. If the user moves to the edge of the cell and approaches the handover area 11, the measurement related to the handover is turned on. At the moment, the measurement is turned off, so that the user can be switched while minimizing the overhead caused by the measurement. That is, if it can be determined that the UE is not in the handover area 11, all measurements related to the handover can be turned off.
  • WCDMA systems have provided a variety of methods for measuring UE location, such as cell center coordinates plus RTT (Round Trip Time) and network-assisted Global Positioning System (A-GPS) positioning methods. Different methods have different positioning accuracy. As shown in Fig. 2, the A-GPS positioning method has high precision and can be located in a certain polygonal area 3 with a small range. However, the method has a large overhead and is complicated to calculate; The RTT method has low accuracy and can only be located within a certain ring 4 with a radius d from the center of the cell. However, the method is simple, basically does not require the participation of the UE, and can also meet the requirements of position measurement. By using the cell center coordinate plus RTT method, it can be determined that at least the UE is located on a certain ring 4 centered on the center of the cell.
  • RTT Real Time
  • A-GPS Global Positioning System
  • the location of the handover area of the cell in the WCDMA system can be obtained by actual road test, and the form can be in the form of a polygonal connection or a circular form indicated by a radius, and is stored in a database at the same time. By comparing the location of the UE with the location of the handover area, a decision can be made to turn the measurement associated with the handover on or off.
  • the invention adopts the method of cell center coordinate plus RTT to determine the location of the mobile station.
  • the principle of the positioning method is to measure the time difference of the UE transceiving data UE Rx_Tx time difference type 2 (hereinafter abbreviated as UE Rx_Tx) and Node B (the station station) System) Corresponding to the loop delay RTT of the radio link, determining the distance d value between the UE and the cell antenna center position according to the following formula:
  • Equation 1 d 2 c X (RTT-UE Rx_Tx) 12 (Equation 1) where c is the speed of light.
  • the error range of d is approximately plus or minus 35 meters. Therefore, for each cell, the UE is located somewhere inside the ring 4 centered on the transmitting antenna and having a radius of d + 35 m and d - 35 m.
  • the UE Rx_Tx of the UE is determined. Therefore, as long as the UE Rx_Tx is measured once, the location of the UE can be determined only by measuring the RTT, and the measurement of the RTT is performed at the Node B without occupying the empty resources.
  • the UE sends and receives data time difference UE x — Tx through the radio network controller (RNC: Radio
  • the network controller is measured by the UE.
  • the signaling process is as shown in Figure 3.
  • the RNC sends a "MEASUREMENT CONTROL" signaling to the UE.
  • the UE returns the MEASUREMENT with the time difference of the receiving and receiving data UE Rx-Tx according to the received signaling command. REPORT".
  • the RTT measurement is performed at Node B.
  • the signaling flow is shown in Figure 4.
  • the RNC sends a "DEDICATED MEASUREMENT INITIATION EQUEST" message to NODE B.
  • the NODE B period measurement RTT is sent.
  • NODE B sends a "DEDICATED MEASUREMENT INITIATION RESPONSE” message to the RNC.
  • the establishment of this dedicated measurement The NODE B then reports the RTT measurement via the "DEDICATED MEASUREMENT REPORT" cycle.
  • Step 501 During the network planning, the intra-frequency handover area and the inter-system handover are obtained by using the actual road test result. Location information of the zone, and saved in the database;
  • Step 502 Waiting for the mobile station to access
  • Step 503 The new mobile station access system RNC establishes a service for the mobile station to camp on the cell.
  • Step 505 The RNC turns on the dedicated measurement of the Node B, and measures the ring of the corresponding wireless link of the user.
  • Step 506 The RNC receives the period of the Node B and reports the RTT.
  • Step 507 The RNC calculates the location where the UE is located by combining the UE Rx_Tx and the RTT.
  • Step 508 Compare the location of the UE with the location of the intra-frequency handover zone saved by the database.
  • step 509 If the UE is in the intra-frequency handover zone and the UE intra-frequency measurement is not turned on, the intra-frequency measurement is turned on, and the process proceeds to step 509;
  • step 509 If the UE is in the intra-frequency handover area and the UE intra-frequency measurement is turned on, proceed to step 509;
  • step 509 If the UE is not in the intra-frequency handover zone and the UE intra-frequency measurement is turned on, the intra-frequency measurement is turned off, and the process proceeds to step 509;
  • Step 509 Compare the UE location with the inter-frequency handover area saved by the database,
  • step 510 If the UE is in the inter-frequency handover area and the UE inter-frequency measurement is not turned on, the inter-frequency measurement is turned on, and the process proceeds to step 510;
  • step 510 If the UE is in the inter-frequency handover area and the UE inter-frequency measurement is turned on, proceed to step 510;
  • step 510 If the UE is not in the inter-frequency handover area and the UE inter-frequency measurement is turned on, the inter-frequency measurement is turned off, and the process proceeds to step 510;
  • Step 510 Compare the UE location with the location of the inter-system handover area saved by the database,
  • the inter-system measurement is turned on, and the process returns to step 502;
  • step 502 If the UE is in the inter-system handover area and the UE inter-system measurement is turned on, then return to step 502; if the UE is not in the inter-system handover area and the UE inter-system measurement is turned on, the inter-system measurement is turned off, and the process returns to step 502;
  • the present invention introduces hysteresis parameters, intra-frequency/inter-frequency/system when performing position information comparison.
  • Inter-switching zone position information combined with two hysteresis parameters of intra-frequency/inter-frequency/inter-system measurement on and off, respectively, can be used to obtain intra-frequency/inter-frequency/inter-system measurement open area and intra-frequency/inter-frequency/inter-system measurement closed area. s position.
  • the intra-frequency/inter-frequency/inter-system measurement is turned on accordingly, and the intra-frequency/inter-frequency/inter-system measurement is turned off if the UE is in the intra-frequency/inter-frequency/inter-system measurement off zone.
  • the introduction of the hysteresis parameter ensures that the measurement related to the switching is opened in advance when entering the switching area, and the relevant measurement is turned off after leaving the switching area.
  • the two hysteresis parameters can be set differently to avoid frequent switching on and off related to the switching.
  • Different hysteresis parameters can be set for intra-frequency, inter-frequency and inter-system measurements as needed.
  • the method for measuring in the WCDMA system of the present invention can turn off all measurements related to handover when the UE is not in the handover area, thereby minimizing the influence of the measurement on the air interface, reducing the power consumption of the UE, and prolonging the standby of the UE. Time, the improvement of the entire WCDMA system.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
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Description

一种 WCDMA系统中测量的方法 技术领域
本发明涉及一种对宽带码分多址系统测量的改进方法特别是一种利用移 动台的位置信息来控制 WCDMA系统与切换相关测量开启和关闭的方法。 背景技术
WCDMA系统支持非常丰富的测量种类， 其中与切换相关的主要是同频 小区的测量 （频内测量）、 异频小区的测量 （频间测量） 和异系统小区的测量 (系统间测量） 这三种。 这些测量是移动台 （以下称之为 UE)进行频内、 频 间和系统间切换的基础。在大多数情况下， 只有打幵了这些测量， 与之对应的 切换才能顺利进行。 同时还要看到， 这些测量的开启， 对网络， UE以及空中 无线资源增加了额外的开销，尤其是频间测量和系统间测量往往需要打开压缩 模式才能进行， 而压缩模式的开启会增加小区的负荷， 对小区的容量造成不良 的影响； 同时 UE受限于体积和电池容量， 降低 UE的功耗也是一个十分迫切 的问题。 UE的待机时间是评估 WCDMA网络性能的一个重要指标。在不影响 切换功能执行的前提下， 尽可能地减少各类与切换相关测量的开启时间， 对网 络和 UE都会起到有益的效果。
目前国内外已有降低 WCDMA系统中测量开销相关的专利。
申请号为 02112023.4的中国专利 "CDMA通信系统中异系统间切换的方 法"，该专利是通过检测激活集小区质量的好坏以决定是否打幵压缩模式进行 系统间测量， 虽然该专利可以根据需要打开系统间测量， 但是频内测量始终都 需要打开， 不是一个彻底降低测量开销的解决方案。
申请号为 01144933.0 的中国专利 "一种系统间切换方法"， 该专利的实 现是通过监测小区的信号质量来实现对系统间测量的控制，但其仍然必须打开 频内测量才能实现。
申请号为 858672 的美国专利 " Systems and methods for intelligent inter-system handoff" ， 该专利必须使用一个外置的全球定位装置， 精确定位 终端位置实现切换， 但其切换的执行完全不依据不同系统的质量， 故其切换有 一定的盲目性。 又如专利号为 EP 1349413 的欧洲专利 " Handover procedure based on position data of mobile terminal in multi-mode mobile communications system" ， 该专利利用 UE的位置信息直接决定系统间切换， UE位置信息的 测量如果精度高， 如使用 GPS， 则势必增加测量器件成本和复杂度； 如果用普 通的测量器件， 贝 立置信息的测量又不足够精确， 不足以满足系统间切换的需 要， 容易造成掉话。 发明内容
本发明的目的在于通过 UE的位置信息， 有针对性地开启 UE需要的测 量， 关闭 UE不需要的测量， 使测量对网络、 UE和空中无线资源带来的额外 开销最小化。
为了实现上述目的， 本发明提供了一种 WCDMA系统中测量的方法， 包 括以下步骤：
步骤 a, 获取所述 WCDMA系统中小区的频内切换区、 频间切换区和系 统间切换区的位置信息；
步骤 b, 确定接入所述小区的移动台的位置信息；
步骤 c, 比较所述的移动台的位置信息和所述切换区的位置信息； 及 步骤 d, 根据比较结果开启或关闭频内测量、 频间测量和系统间测量。 上述的 WCDMA系统中测量的方法， 其中， 所述步骤 b又包括： 步骤 M,所述 WCDMA系统中的无线网络控制器测量所述移动台的收发 时间差；
步骤 b2,所述 WCDMA系统中的基站子系统测量所述移动台对应无线链 路的环路时延并周期上报给所述无线网络控制器；
步骤 b3,所述无线网络控制器根据所述收发时间差和环路时延计算所述 移动台的位置信息。
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 d又包括以下步骤： 步骤 dl,如果所述步骤 c中比较的结果为所述移动台处于频内切换区，则 开启所述频内测量， 否则关闭所述频内测量；
步骤 d2,如果所述步骤 c中比较的结果为所述移动台处于频间切换区， 则 开启所述频间测量， 否则关闭所述频间测量； 及 步骤 d3,如果所述步骤 c中比较的结果为所述移动台处于系统间切换区， 则幵启所述系统间测量， 否则关闭所述系统间测量。
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 a通过实际路测获 取所述切换位置信息。
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 a和步骤 b之间还 包括步骤： 移动台接入所述小区， 所述 WCDMA系统中的无线网络控制器为 所述移动台建立业务。
上述的 WCDMA系统中测量的方法， 其中， 还包括： 返回步骤13。
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 a和步骤 b之间还 包括步骤： 根据所述的频内切换区、频间切换区和系统间切换区的位置信息并 利用迟滞参数分别获取频内测量开启区、频间测量开启区和系统间测量开启区 的位置信息和频内测量关闭区、频间测量关闭区和系统间测量关闭区的位置信
Λ≤、 ο
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 b又包括： 步骤 bl,所述 WCDMA系统中的无线网络控制器测量所述移动台的收发 时间差；
步骤 b2,所述 WCDMA系统中的基站子系统测量所述移动台对应无线链 路的环路时延并周期上报给所述无线网络控制器；
步骤 b3,所述无线网络控制器根据所述收发时间差和环路时延计算所述 移动台的位置信息。
上述的 WCDMA系统中测量的方法， 其中， 所述步骤 d又包括以下步骤： 步骤 dl,如果所述步骤 c中比较的结果为所述移动台处于频内测量开启 区， 则开启所述频内测量， 所述移动台处于频内测量关闭区， 则关闭所述频内 步骤 d2,如果所述步骤 c中比较的结果为所述移动台处于频间测量开启 区， 则开启所述频间测量， 所述移动台处于频间测量关闭区， 则关闭所述频间 步骤 d3,如果所述步骤 c中比较的结果为所述移动台处于系统间测量开启 区， 则开启所述系统间测量， 所述移动台处于系统间测量关闭区则关闭所述系 统间测量。 上述的 WCDMA系统中测量的方法， 其中， 还包括： 返回步骤13。
釆用本发明所述方法， 与现有技术相比， 会大大缩短频内测量、频间测量 及系统间测量的开启时间， 降低系统和 UE的负荷， 增大了系统的容量， 延长 了 UE的待机时间。
以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明的 限定。 附图说明
图 1为 WCDMA系统中小区的切换区示意图；
图 2为不同定位方式的结果示意图；
图 3为测量获得 UE位置信息的信令流程示意图；
图 4为测量获得 RTT的信令流程示意图；
图 5为本发明 WCDMA系统中测量的方法流程图。 具体实施方式
如图 1所示， 与一个小区 1的覆盖相比， 其切换区 11相对只占较小的面 积， 如果在用户移动到小区边缘， 接近切换区 11的时候才打开与切换相关的 测量， 其余时刻该测量关闭， 则可以实现保证用户切换的同时最大限度地减小 了测量带来的开销。 也就是说， 如果能确定 UE不处于切换区 11， 那么与切换 相关的所有测量都可以关闭。
WCDMA系统已经提供了多种测量 UE位置的方法， 如小区中心坐标加 RTT ( Round Trip Time,环路时延）的方法及网络辅助的全球定位系统（ A-GPS ) 定位方法等。 不同方法定位精度不同， 如图 2所示， A-GPS定位方法精度高， 可定位到范围很小的某一多边形区域 3内， 但该方法开销较大， 计算也比较复 杂； 小区中心坐标加 RTT的方法精度较低， 只能定位到离小区中心半径为 d 的某一圆环 4之内， 但该方法简单， 基本不需要 UE的参与， 也可以满足位置 测量的要求。 通过利用小区中心坐标加 RTT的方法， 可以至少确定出 UE位 于以小区中心为圆心的某一圆环 4上。
而 WCDMA系统中的小区的切换区位置可以通过实际路测得到， 其形式 可以是多边型连线的形式或半径指示的圆周形式， 同时将其保存在数据库中， 通过将 UE的位置与切换区的位置作比较， 从而可作出开启或关闭与切换相关 测量的判决。
本发明采用小区中心坐标加 RTT的方法来确定移动台的位置， 该定位方 法的原理是通过测量 UE收发数据时间差 UE Rx_Tx time difference type 2 (以 下简记为 UE Rx_Tx)和 Node B (机站子系统）对应无线链路的环路时延 RTT， 根据下面的公式确定 UE和小区天线中心位置的距离 d值：
d二 c X (RTT-UE Rx_Tx) 12 (公式 1 ) 其中 c为光速。
如图 2所示， 由于测量误差的影响， d的误差范围大约为正负 35米。 所 以对每一个小区来说， UE位于以发射天线为中心， 半径为 d + 35m和 d— 35m 的圆环 4内部某处。
UE的 UE Rx—Tx是确定的， 因此只要测量得到一次 UE Rx_Tx， 后续只需 要测量 RTT就可以确定 UE的位置， 而 RTT的测量在 Node B进行， 不占用空 中资源。
其中， UE收发数据时间差 UE x— Tx通过无线网络控制器（RNC: Radio
Network Controller)对 UE测量得到， 信令流程如图 3所示， 首先 RNC对 UE 发出 "MEASUREMENT CONTROL"信令， UE根据接受到的信令指令返回 带有收发数据时间差 UE Rx— Tx的 "MEASUREMENT REPORT" 。
RTT的测量在 Node B进行其信令流程如图 4所示， 首先 RNC向 NODE B发 送" DEDICATED MEASUREMENT INITIATION EQUEST "消息要求 NODE B 周期测量 RTT ， NODE B向 RNC发送 " DEDICATED MEASUREMENT INITIATION RESPONSE"消息确认该专用测量的建立。 随后 NODE B通过 "DEDICATED MEASUREMENT REPORT"周期上报 RTT的测量结果。
本发明的 WCDMA系统中测量的方法流程如图 5所示， 包括以下步骤： 步骤 501 : 在网络规划时， 通过实际路测结果， 得到各小区的频内切换区 频间切换区和系统间切换区的位置信息， 并保存在数据库中；
步骤 502: 等待移动台接入；
步骤 503 :有新的移动台接入系统 RNC在移动台驻留小区为其建立业务 步骤 504: R C通过对 UE的测量得到 UE收发时间差 UE Rx_Tx;
步骤 505: RNC打开 Node B的专用测量， 测量该用户对应无线链路的环 路时延 RTT;
步骤 506: RNC收到 Node B的周期上报 RTT;
步骤 507: RNC结合 UE Rx_Tx和 RTT计算出 UE所处的位置； 步骤 508 : 将 UE位置与数据库保存的频内切换区位置比较，
如果 UE处于频内切换区且 UE频内测量没有打开， 则打开频内测量， 并 进入步骤 509;
如果 UE处于频内切换区且 UE频内测量已打开， 则进入步骤 509;
如果 UE没有处于频内切换区且 UE频内测量已打开， 则关闭频内测量， 并进入步骤 509;
如果 UE没有处于频内切换区且 UE频内测量没有打开， 则进入步骤 509; 步骤 509: 将 UE位置与数据库保存的频间切换区位置比较，
如果 UE处于频间切换区且 UE频间测量没有打开， 则打开频间测量， 并 进入步骤 510;
如果 UE处于频间切换区且 UE频间测量已打开， 则进入步骤 510;
如果 UE没有处于频间切换区且 UE频间测量已打开， 则关闭频间测量， 并进入步骤 510;
如果 UE没有处于频间切换区且 UE频间测量没有打开，则进入步骤 510; 步骤 510: 将 UE位置与数据库保存的系统间切换区位置比较，
如果 UE处于系统间切换区且 UE系统间测量没有打开， 则打开系统间测 量， 并返回步骤 502;
如果 UE处于系统间切换区且 UE系统间测量已打开， 则返回步骤 502; 如果 UE没有处于系统间切换区且 UE系统间测量已打开， 则关闭系统间 测量， 并返回步骤 502;
如果 UE没有处于系统间切换区且 UE频间测量没有打开，则返回步骤 502。 同时， 考虑到测量得到的位置信息会有一定的误差、 与切换相关的测量本 身需要一定的时间才能完成等因素，在进行位置信息比较时，本发明引入迟滞 参数， 频内 /频间 /系统间切换区位置信息分别结合频内 /频间 /系统间测量开启 和关闭的两个迟滞参数， 可以得到频内 /频间 /系统间测量开启区和频内 /频间 / 系统间测量关闭区的位置。
相应的，在图 5所示的流程中，如果 UE处于频内 /频间 /系统间测量开启区， 则相应打开频内 /频间 /系统间测量，如果 UE处于频内 /频间 /系统间测量关闭区 则关闭频内 /频间 /系统间测量。
迟滞参数的引入可以保证在进入切换区时提前打开与切换相关的测量， 离 开切换区后才关闭相关测量。
同时这两个迟滞参数可设置的不同， 避免与切换相关的测量频繁的开启和 关闭。 根据需要， 频内、 频间和系统间测量可以设置不同的迟滞参数。
当然， 本发明还可有其他多种实施例， 在不背离本发明精神及其实质的情 况下， 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形， 但 这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 工业应用性
本发明的 WCDMA系统中测量的方法当 UE不处于切换区时，可以关闭与 切换相关的所有测量， 最大限度地降低了测量对空中接口的影响， 降低了 UE 的功耗， 延长了 UE的待机时间， 对整个 WCDMA系统有明显的改进效果。

Claims

权利要求书
1. 一种 WCDMA系统中测量的方法， 包括以下步骤：
步骤 a， 获取所述 WCDMA系统中小区的频内切换区、 频间切换区和系 统间切换区的位置信息；
步骤 b， 确定接入所述小区的移动台的位置信息；
步骤 c， 比较所述的移动台的位置信息和所述切换区的位置信息； 及 步骤 d，根据比较结果开启或关闭频内测量、 频间测量和系统间测量。
2. 根据权利要求 1所述的 WCDMA系统中测量的方法，其特征在于，所 述步骤 b又包括：
步骤 bl，所述 WCDMA系统中的无线网络控制器测量所述移动台的收发 时间差；
步骤 b2，所述 WCDMA系统中的基站子系统测量所述移动台对应无线链 路的环路时延并周期上报给所述无线网络控制器；
步骤 b3， 所述无线网络控制器根据所述收发时间差和环路时延计算所述 移动台的位置信息。
3.根据权利要求 1或 2所述的 WCDMA系统中测量的方法，其特征在于， 所述步骤 d又包括以下步骤：
步骤 dl,如果所述步骤 c中比较的结果为所述移动台处于频内切换区， 则开启所述频内测量， 否则关闭所述频内测量；
步骤 d2,如果所述步骤 c中比较的结果为所述移动台处于频间切换区，则 开启所述频间测量， 否则关闭所述频间测量； 及
步骤 d3,如果所述步骤 c中比较的结果为所述移动台处于系统间切换区， 则开启所述系统间测量， 否则关闭所述系统间测量。
4.裉据权利要求 3所述的 WCDMA系统中测量的方法，其特征在于，所 述步骤 a通过实际路测获取所述切换位置信息。
5. 根据权利要求 1或 2所述的 WCDMA系统中测量的方法，其特征在于， 所述步骤 a和步骤 b之间还包括步骤： 移动台接入所述小区， 所述 WCDMA 系统中的无线网络控制器为所述移动台建立业务。
6. 根据权利要求 3所述的 WCDMA系统中测量的方法，其特征在于，还 包括步骤： 返回步骤13。
7.根据权利要求 1所述的 WCDMA系统中测量的方法，其特征在于，所 述步骤 a和步骤 b之间还包括步骤： 根据所述的频内切换区、频间切换区和系 统间切换区的位置信息并利用迟滞参数分别获取频内测量开启区、频间测量开 启区和系统间测量开启区的位置信息和频内测量关闭区、频间测量关闭区和系 统间测量关闭区的位置信息。
8. 根据权利要求 7所述的 WCDMA系统中测量的方法，其特征在于，所 述步骤 b又包括：
步骤 bl，所述 WCDMA系统中的无线网络控制器测量所述移动台的收发 时间差；
步骤 b2，所述 WCDMA系统中的基站子系统测量所述移动台对应无线链 路的环路时延并周期上报给所述无线网络控制器；
步骤 b3, 所述无线网络控制器根据所述收发时间差和环路时延计算所述 移动台的位置信息。
9.根据权利要求 7或 8所述的 WCDMA系统中测量的方法，其特征在于， 所述步骤 d又包括以下步骤- 步骤 dl，如果所述步骤 c中比较的结果为所述移动台处于频内测量开启 区， 则开启所述频内测量， 所述移动台处于频内测量关闭区， 则关闭所述频内 步骤 d2,如果所述步骤 c 中比较的结果为所述移动台处于频间测量开启 区， 则开启所述频间测量， 所述移动台处于频间测量关闭区， 则关闭所述频间 测量； 及
步骤 d3， 如果所述步骤 c中比较的结果为所述移动台处于系统间测量开 启区， 则开启所述系统间测量，所述移动台处于系统间测量关闭区则关闭所述 系统间测量。
10. 根据权利要求 9所述的 WCDMA系统中测量的方法， 其特征在于， 还包括步骤： 返回步骤
PCT/CN2005/000109 2005-01-26 2005-01-26 Method for measuring in wcdma system Ceased WO2006079242A1 (en)

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