WO2006079242A1 - Procede destine a realiser des mesures dans un systeme amrc large bande - Google Patents

Procede destine a realiser des mesures dans un systeme amrc large bande 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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WO
WIPO (PCT)
Prior art keywords
inter
measurement
frequency
mobile station
intra
Prior art date
Application number
PCT/CN2005/000109
Other languages
English (en)
Chinese (zh)
Inventor
Bin Xu
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to CN2005800423518A priority Critical patent/CN101073216B/zh
Priority to PCT/CN2005/000109 priority patent/WO2006079242A1/fr
Publication of WO2006079242A1 publication Critical patent/WO2006079242A1/fr

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Classifications

    • 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. TPC [Transmission Power Control], power saving 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé destiné à réaliser des mesures dans un système AMRC large bande et consistant à obtenir des informations de position d'une zone de commutation dans la bande, entre les bandes et entre les systèmes pour la cellule dans le système AMRC large bande, à déterminer des informations de position de la station mobile accédant à la cellule, à comparer les informations de position de la station mobile avec celles de la zone de commutation, et à ouvrir ou fermer la mesure dans la bande, entre les bandes et entre les systèmes sur la base du résultat de la comparaison. Le procédé de l'invention destiné à réaliser des mesures dans un système AMRC large bande consiste à fermer toutes les mesures en association avec la commutation lorsque l'équipement utilisateur se trouve au-delà de la zone de commutation, ce qui permet d'atténuer considérablement les conséquences des mesures sur l'interface hertzienne, de réduire la consommation d'énergie avec l'équipement utilisateur et de prolonger le temps d'attente de l'équipement utilisateur, d'où une amélioration sensible de la performance de tout le système AMRC large bande.
PCT/CN2005/000109 2005-01-26 2005-01-26 Procede destine a realiser des mesures dans un systeme amrc large bande WO2006079242A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2005800423518A CN101073216B (zh) 2005-01-26 2005-01-26 一种wcdma系统中测量的方法
PCT/CN2005/000109 WO2006079242A1 (fr) 2005-01-26 2005-01-26 Procede destine a realiser des mesures dans un systeme amrc large bande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/000109 WO2006079242A1 (fr) 2005-01-26 2005-01-26 Procede destine a realiser des mesures dans un systeme amrc large bande

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WO2006079242A1 true WO2006079242A1 (fr) 2006-08-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111836313B (zh) * 2019-04-17 2022-08-09 华为技术有限公司 一种小区切换测量的指示方法、网络设备及终端

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061337A (en) * 1996-12-02 2000-05-09 Lucent Technologies Inc. System and method for CDMA handoff using telemetry to determine the need for handoff and to select the destination cell site
WO2000067512A1 (fr) * 1999-04-30 2000-11-09 Nokia Networks Oy Procede et dispositif de mise en oeuvre d'un transfert utilisant des informations de localisation
US6321090B1 (en) * 1998-11-06 2001-11-20 Samir S. Soliman Mobile communication system with position detection to facilitate hard handoff
EP1225782A1 (fr) * 1999-10-29 2002-07-24 Fujitsu Limited Technique de commande de transfert d'un systeme amcr, station de base utilisee a cet effet et unite de commande de station de base
EP1349413A1 (fr) * 2002-03-26 2003-10-01 NTT DoCoMo, Inc. Procedure de transfert d'appel basée sur des données de position d'un terminal mobile dans une système de radiotéléphonie mobile
CN1464665A (zh) * 2002-06-11 2003-12-31 华为技术有限公司 Cdma通信系统中异系统间切换的方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061337A (en) * 1996-12-02 2000-05-09 Lucent Technologies Inc. System and method for CDMA handoff using telemetry to determine the need for handoff and to select the destination cell site
US6321090B1 (en) * 1998-11-06 2001-11-20 Samir S. Soliman Mobile communication system with position detection to facilitate hard handoff
WO2000067512A1 (fr) * 1999-04-30 2000-11-09 Nokia Networks Oy Procede et dispositif de mise en oeuvre d'un transfert utilisant des informations de localisation
EP1225782A1 (fr) * 1999-10-29 2002-07-24 Fujitsu Limited Technique de commande de transfert d'un systeme amcr, station de base utilisee a cet effet et unite de commande de station de base
EP1349413A1 (fr) * 2002-03-26 2003-10-01 NTT DoCoMo, Inc. Procedure de transfert d'appel basée sur des données de position d'un terminal mobile dans une système de radiotéléphonie mobile
CN1464665A (zh) * 2002-06-11 2003-12-31 华为技术有限公司 Cdma通信系统中异系统间切换的方法

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CN101073216A (zh) 2007-11-14
CN101073216B (zh) 2010-11-10

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