WO2003065627A1 - Procede de gestion et d'optimisation de ressources radio dans un systeme armc - Google Patents

Procede de gestion et d'optimisation de ressources radio dans un systeme armc Download PDF

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Publication number
WO2003065627A1
WO2003065627A1 PCT/CN2003/000094 CN0300094W WO03065627A1 WO 2003065627 A1 WO2003065627 A1 WO 2003065627A1 CN 0300094 W CN0300094 W CN 0300094W WO 03065627 A1 WO03065627 A1 WO 03065627A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
station controller
information
serving base
Prior art date
Application number
PCT/CN2003/000094
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English (en)
Chinese (zh)
Inventor
Yu Zhang
Yu Liu
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2003065627A1 publication Critical patent/WO2003065627A1/fr
Priority to AP2005003333A priority Critical patent/AP1874A/xx

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]

Definitions

  • the present invention relates to a communication system, and in particular, to a method for optimizing radio resource management between different nodes in a code division multiple access (CDMA) cellular mobile communication system.
  • CDMA code division multiple access
  • CDMA is a spread spectrum communication technology.
  • Spread spectrum communication technology was mainly used in military communications in the early days. Due to its excellent performance, it will also be widely used in the field of civil communications.
  • CDMA cellular mobile communication systems operating in telecommunication networks.
  • Soft handover means that the user terminal (UE) communicates with multiple cell base stations at the same time by using different channel codes in the same frequency band and the same time.
  • the application of soft handover is one of the distinguishing characteristics of CDMA system from other systems. The use of soft handover improves the handover performance.
  • Migration is a series of signaling processes that ultimately enables the drifting base station controller to perform the role of serving the base station controller at the same time, and communicates with the core network through the base station controller.
  • the interface on the side maintains communication with the core network, and the interface transmission resources between the original serving base station controller and the drift base station controller are released, and the interface transmission resources between the original serving base station controller and the core network are also released.
  • the user communicates with multiple cells at the same time, regardless of whether these cells belong to the same base station controller.
  • the serving base station controller that first establishes a connection with the user terminal, in order to achieve the most economical and reasonable use of the wireless resources of the cell and the more convenient use by the user, All need to perform radio resource management according to a certain algorithm.
  • This has two advantages: 1) radio resource management saves operators valuable radio frequency resources; 2) but more importantly, it indirectly brings economic benefits to end users: moving without using radio resources Compared with communication systems, users can pay less for their telephone bills and enjoy higher quality services.
  • the radio resource management itself needs to obtain relevant information before it can be successfully completed. This includes the status of the user terminal, the status of the user service, the status of the cell connected to the user, the wireless environment in which the user is located, and so on. Some of this information is obtained by storing the information in a database, or some is obtained by measurements from the cell and the user terminal.
  • the cells communicating with the user terminal do not belong to the same base station controller, information about these cells needs to be transmitted to the serving base station controller through the interface between the base station controllers; or Or, if all the cells belong to the same base station controller, but do not belong to the serving base station controller, and the system is not migrated, the information of these cells also needs to be transmitted to the serving base station controller through the interface between the base station controllers.
  • the interface between the base station controllers is called a lur interface, and it is an open interface.
  • WCDMA wideband code division multiple access
  • the serving base station controller only the most necessary information is transmitted to the serving base station controller, including the scrambling code of the cell where the current handover is successful. Only a small amount of necessary cell information is transmitted to the serving base station controller in the message via the lur interface. This information can only ensure that the most necessary handover actions can be performed, but cannot meet the needs of the serving base station controller to optimally perform radio resource management. Many useful information that can promote the use efficiency of the cell radio resources are not transmitted to the serving base station controller, so the serving base station controller cannot optimally complete the radio resource management of the cell. This is a more prominent defect in the prior art. Summary of the Invention
  • the main object of the present invention is to provide a method for optimizing radio resource management in a CDMA system, adding a lur interface to upload cell attribute information to a serving base station controller, and transmitting more useful cell attribute information to the serving base station.
  • the controller classifies part of them to better implement radio resource management of the cell.
  • the serving base station controller where the user terminal is initially connected and the drifting base station controller where the current connection is located are in a separated state or across different base station controller states
  • the serving base station controller is used.
  • the interface with the drifting base station controller includes the cell information of the cell covered by the base station under the control of the drifting base station controller, including the scrambling code of the cell to be switched to the cell and its neighbors, and other small guarantees that the handover action of the base station controller can be performed.
  • the necessary cell information is transmitted to the serving base station controller where the user terminal is initially connected.
  • the key lies in transmitting from the drift base station controller to the serving base station controller.
  • cell attribute information related to radio resource management optimization strategies including: cell user density characteristics, cell mobility characteristics, cell shape, cell size, cell sector shape, and cell latitude and longitude; serving base station control
  • the device classifies the user density characteristics, mobility characteristics, and shape attribute information of the cell transmitted from the interface between the serving base station controller and the drifting base station controller, and performs radio resource management optimization based on all cell attribute information. Including optimized handover, power control, positioning, and channel allocation.
  • the cell attribute information described above specifically includes: The user density characteristic information of the cell is classified into a commercial area, a residential area, a suburb, and a village.
  • the mobility characteristic information of a residential area is classified into a vehicle environment, a walking environment, and an indoor environment.
  • the shape information of a cell is classified into an omnidirectional cell, a directional cell, a hexagon, and a circle.
  • the cell size information includes the radius of the cell.
  • the sector shape information of a cell is the angle of the sector.
  • the longitude and latitude information of the cell is the coordinate information of the cell.
  • the cell attribute information may also include all other information related to radio resource management policies.
  • the radio resource management performed by using the foregoing information includes the following methods and strategies:
  • the user density characteristics of the cell and the service distribution characteristics of the users in the cell are used to determine the capacity of the public channel in the cell, and based on this, for each
  • the power control algorithm uses the user density and mobility characteristics of the cell to perform different power control. For example, for users in the vehicle environment, the power control algorithm considers how to provide tracking speed; for indoor environments, it focuses on how to improve the accuracy of power control and reduce the remaining error in power control. That is, the power control algorithm is determined by the characteristics of the cell itself.
  • the method of the present invention transmits more cell attribute information to the serving base station controller through the Iur interface, thereby facilitating the serving base station controller to use these cell attribute information to better implement the cell attribute information classification and wireless of the serving base station controller.
  • Optimization of resource management so that the base station server where the user initially connects can maintain an optimized wireless resource management strategy, and ultimately bring about the optimized use efficiency of wireless resources and the best guarantee of user service quality.
  • FIG. 1 is a schematic diagram of a user terminal connected only to a serving base station controller
  • FIG. 2 is a schematic diagram of a user terminal connection in a state of a cross base station server
  • Figure 3 is a schematic diagram of the user terminal connection in a separated state.
  • FIG. 1 Schematic diagrams of node connections in the three states of CDMA system without base station controller migration, cross-base station controller, and separation are shown in Figure 1, Figure 2, and Figure 3, and Figures 1 to 3 are composed of the following parts: Core Network 1, serving base station controller 2, drifting base station controller 3, base station one 4, base station two 5, base station three 6, and user terminal 7, the interface between core network 1 and serving base station controller 2 is represented as an Iu interface, The interface between the serving base station controller 2 and the drifting base station controller 3 is represented as an Iur interface, the interface between the serving base station controller 2 or the drifting base station controller 3 and each base station is represented as an Iub interface, and the base station and the user terminal 7 The interface between them is represented as a Uu interface.
  • the user terminal 7 initially establishes a connection with the serving base station controller 2 and starts communication, and the base station that has a wireless connection with the user terminal 7 is base station 4. Since the attributes of the base station-1 and the cell controlled by it are all stored at the serving base station controller 2, Online resource management strategies can be optimal.
  • the user terminal 7 will continuously report the signal quality of the surrounding cells it measures during the movement process. If the quality of these cells is good, the serving base station controller 2 may make a handover decision and perform a handover procedure. If these cells belong to the serving base station controller 2, the serving base station controller 2 can still perform optimal radio resource management.
  • the movement of the user terminal may also appear that the neighboring cell with a better signal measured by it is under the control of another base station controller, that is, the drift base station controller 3. If the serving base station controller 2 switches the decision to add the cell to the active set, it sends a radio link setup message Radio Link Setup to the drift base station controller 3 through the Iur interface.
  • the serving base station controller 2 switches the decision to add the cell to the active set, it sends a radio link setup message Radio Link Setup to the drift base station controller 3 through the Iur interface.
  • the attribute information of the cell is brought back.
  • the attribute information may include:
  • the shape of the cell that is, the cell belongs to an omnidirectional cell, a directional cell, a hexagon, and / or a circle;
  • the size of the cell that is, the radius of the cell, etc .
  • the target cell for the user handover is not under the control of the current serving base station controller, for each base station controller, storing the cell information controlled by each base station controller around it is too complicated and uneconomical. Generally, this method is used.
  • the serving base station controller is configured with the information of the few neighboring cells in its immediate vicinity, while other cell information is transmitted to the Iur interface. Serving base station controller.
  • the CDMA system node connection state diagram is shown in Figure 2.
  • the user terminal maintains connection with base station 1 and base station 2 at the same time, while base station 1 is under the control of the serving base station controller 2, and base station 2 5 is under the control of the drift base station controller 3.
  • the serving base station controller 2 classifies the user density characteristics, mobility characteristics, and shape attribute information of the cells according to the cell attribute information obtained from the Radio Link Setup Response message of the Iur interface, and optimizes all the cell attribute information according to the cell attribute information.
  • the algorithm performs radio resource management to obtain optimized performance and quality of service. Radio resource management according to an optimized algorithm refers to optimized handover, power control, positioning, and channel allocation.
  • the attribute information of the cell may also include all other information related to the radio resource management strategy.
  • Radio resource management using cell attribute information includes the following methods and strategies: Utilizing the user density characteristics of the cell and the service distribution characteristics of users in the cell to determine the capacity of the public channel in the cell, and based on this, for each A user with a specific service attribute and service rate decides to establish the user under a common channel or a dedicated channel during channel allocation, and further determines its channel parameters according to these characteristics of the cell. If the capacity of the common channel in the small area is large, the serving base station controller 2 allocates low-rate users to the common channel during channel allocation, thereby saving dedicated channel resources. Conversely, more user services need to be allocated to dedicated channels to ensure the quality of user services.
  • the user terminal 4 is located by using the shape of the cell, the sector shape of the directional cell, the size of the cell, and the like.
  • the power control algorithm uses the user density characteristics and mobility characteristics of the cell for different power control. For example, for users in a vehicle environment, the power control algorithm considers how to provide tracking speed, For indoor environment, how to improve the accuracy of power control and reduce the remaining error of power control, that is, the power control algorithm is determined by the characteristics of the cell itself.
  • the base station controller 2 can maintain optimal radio resource management for the user terminal 7.
  • the method according to the present invention is still applicable.

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

Abstract

La présente invention concerne un procédé de gestion et d'optimisation des ressources radio dans un système ARMC, le procédé de gestion et d'optimisation des ressources radio s'appliquant aux différents noeuds dans le système de communication mobile ARMC. Le procédé transmet les informations d'attributs de cellules du contrôleur de dérive des stations de base avec lequel le terminal utilisateur établit au fur et à mesure la liaison vers le contrôleur de station de base de desserte avec lequel la liaison initiale a été établie, par l'intermédiaire de l'interface entre les contrôleurs de station de base, et classifie lesdites informations d'attributs de cellules, puis il optimise la gestion des ressources radio selon les informations d'attributs de cellules, ainsi le contrôleur de station de base de desserte par lequel a été établie la liaison initiale du terminal peut préserver une stratégie de gestion optimisant les ressources radio et enfin il améliore le rendement d'utilisation des ressources radio et par la même il assure une garantie optimale de la qualité du trafic de l'utilisateur.
PCT/CN2003/000094 2002-01-30 2003-01-28 Procede de gestion et d'optimisation de ressources radio dans un systeme armc WO2003065627A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AP2005003333A AP1874A (en) 2002-11-16 2003-11-10 A shaft coupling unit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB02110705XA CN1182672C (zh) 2002-01-30 2002-01-30 一种cdma系统中无线资源管理优化的方法
CN02110705.X 2002-01-30

Publications (1)

Publication Number Publication Date
WO2003065627A1 true WO2003065627A1 (fr) 2003-08-07

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CN (1) CN1182672C (fr)
WO (1) WO2003065627A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2139254A1 (fr) * 2007-03-21 2009-12-30 ZTE Corporation Méthode et appareil signalant la capacité d'une cellule à effectuer la modulation d'une liaison descendante de haut niveau

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CN100369496C (zh) * 2004-10-11 2008-02-13 中兴通讯股份有限公司 一种cdma智能网信号漂移时的计费方法及其计费系统
CN100428827C (zh) * 2006-03-30 2008-10-22 华为技术有限公司 一种icr配置数据的配置管理方法及系统
CN101047930A (zh) * 2006-03-30 2007-10-03 华为技术有限公司 演进移动网络中发送icr信息测量报告的方法及系统
GB0702169D0 (en) 2007-02-05 2007-03-14 Nec Corp Resource Allocation
CN101272316B (zh) * 2007-03-21 2012-01-11 中兴通讯股份有限公司 报告小区对下行高阶调制不支持的方法和装置
CN101217764B (zh) * 2008-01-16 2012-03-07 中兴通讯股份有限公司 优化无线本地环路通信网络的方法及系统
EP3869867A1 (fr) 2016-06-12 2021-08-25 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de communication et appareil de communication
CN108259151B (zh) * 2016-12-29 2021-03-30 华为技术有限公司 一种信息传输方法及无线接入网设备

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CN1223775A (zh) * 1996-05-01 1999-07-21 夸尔柯姆股份有限公司 支持系统间软切换的系统间呼叫
WO2000011878A2 (fr) * 1998-08-19 2000-03-02 Telefonaktiebolaget Lm Ericsson (Publ) Reseau de systemes et technique afferente de routage d'une information de transfert de cellule
CN1250272A (zh) * 1998-08-26 2000-04-12 日本电气株式会社 基站控制器之间实现软切换的移动通信系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1223775A (zh) * 1996-05-01 1999-07-21 夸尔柯姆股份有限公司 支持系统间软切换的系统间呼叫
WO2000011878A2 (fr) * 1998-08-19 2000-03-02 Telefonaktiebolaget Lm Ericsson (Publ) Reseau de systemes et technique afferente de routage d'une information de transfert de cellule
CN1250272A (zh) * 1998-08-26 2000-04-12 日本电气株式会社 基站控制器之间实现软切换的移动通信系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2139254A1 (fr) * 2007-03-21 2009-12-30 ZTE Corporation Méthode et appareil signalant la capacité d'une cellule à effectuer la modulation d'une liaison descendante de haut niveau
EP2139254A4 (fr) * 2007-03-21 2013-11-27 Zte Corp Méthode et appareil signalant la capacité d'une cellule à effectuer la modulation d'une liaison descendante de haut niveau

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CN1435963A (zh) 2003-08-13
CN1182672C (zh) 2004-12-29

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