WO2011160352A1 - Procédé et dispositif de réseau permettant l'optimisation de relais dans un système lte - Google Patents

Procédé et dispositif de réseau permettant l'optimisation de relais dans un système lte Download PDF

Info

Publication number
WO2011160352A1
WO2011160352A1 PCT/CN2010/077473 CN2010077473W WO2011160352A1 WO 2011160352 A1 WO2011160352 A1 WO 2011160352A1 CN 2010077473 W CN2010077473 W CN 2010077473W WO 2011160352 A1 WO2011160352 A1 WO 2011160352A1
Authority
WO
WIPO (PCT)
Prior art keywords
enb
information
cell
neighboring
connection information
Prior art date
Application number
PCT/CN2010/077473
Other languages
English (en)
Chinese (zh)
Inventor
张鹏帅
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011160352A1 publication Critical patent/WO2011160352A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to the field of communication technologies, and specifically refers to an LTE (Long Term Evolution) system relay (Relay) optimization method and a network device.
  • LTE Long Term Evolution
  • Relay relay
  • the network is a flat structure, E-UTRAN (Evolved UTRAN, Evolved Universal Terrestrial Radio Access Network) by eNB (Base Station) and EPC (Evolved Packet Core) , Evolved Packet Switching Center).
  • E-UTRAN Evolved UTRAN, Evolved Universal Terrestrial Radio Access Network
  • eNB Base Station
  • EPC Evolved Packet Core
  • the eNB is connected to the EPC through the S1 interface, and the eNBs are connected through the X2 interface.
  • the S1 interface and the X2 interface are logical interfaces, one EPC can manage one or more eNBs, and one eNB can also be controlled by multiple EPCs, and one eNB manages multiple cells.
  • Relay technology is one of the core technologies of LTE-A (Long Term Evolution-Advance).
  • LTE-A Long Term Evolution-Advance
  • the Relay network is used to achieve blind spot coverage and increase the throughput of the system cell edge.
  • the introduction of Relay in LTE-A is mainly to improve the data coverage, group mobility, temporary network deployment speed, throughput in the cell edge area, and coverage of new areas in the LTE system.
  • the RN (Relay Node) is connected to the eNB through the Un interface.
  • the Un interface is a wireless interface.
  • the RN is connected to the UE (User Equipment) through the Un interface.
  • the main purpose of the present invention is to provide a LTE system relay optimization method and a network device. During the UE handover process, it is determined which operation steps need to be performed to optimize the Relay process.
  • An LTE system relay optimization method includes: adding, in a neighboring cell table of a first relay node RN, connection information of the first RN and a base station eNB and information of a neighboring RN; when the user equipment UE performs handover, according to the The connection information in the neighbor table of the first RN and the information of the neighboring RN are used to cut the steps in the handover process.
  • the method further includes: sending the connection information in the neighboring cell table of the RN to the eNB, and saving In the neighbor table of the eNB.
  • the connection information includes: whether the first RN is connected to the core network through the eNB.
  • the method further includes: receiving a measurement report sent by the UE; determining, according to the measurement report, a cell with the best signal quality, and determining an RN or an eNB to which the cell with the best signal quality belongs, and determining to use the UE Switch to the cell with the best signal quality.
  • a network device comprising: a list setting unit, configured to add connection information of the first RN and an eNB and information of a neighboring RN in a neighbor table of the first RN; and a clipping unit, configured to: when the UE performs handover, according to The connection information in the neighbor table of the first RN and the information of the neighboring RN are used to cut the steps in the handover process.
  • the network device further includes: an information sending unit, configured to send connection information in the neighboring cell table of the RN to the eNB, and save the information in a neighboring cell table of the eNB.
  • the connection information includes: whether the first RN is connected to the core network through the eNB.
  • the network device further includes: a report receiving unit, configured to receive a measurement report sent by the UE; And a switching unit, configured to determine, according to the measurement report, a cell with the best signal quality, and determine an RN or an eNB to which the cell with the best signal quality belongs, and switch the UE to the cell with the best signal quality.
  • the technical solution of the present invention has the following beneficial effects:
  • the method and the device provided by the present invention optimize the handover process of the Relay network by judging the connection between the UE and the RN, the RN and the eNB during the handover process of the UE. , improve the switching efficiency of the LTE system.
  • FIG. 3 is a schematic diagram of a relay network arrangement according to an embodiment of the present invention.
  • FIG. 4 is a network architecture diagram of a UE switching between RNs according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a UE switching between an RN connected to a core network through an eNB and an RN directly connected to a core network according to an embodiment of the present invention
  • Network architecture diagram ;
  • FIG. 6 is a schematic diagram of a network architecture of a UE switching between an RN and an eNB connected to the RN according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a network device according to another embodiment of the present invention. detailed description
  • An embodiment of the present invention provides a method for optimizing an LTE system Relay. As shown in FIG. 2, the method includes the following steps:
  • connection information of the first RN and the eNB and the information of the neighboring RN are added to the neighboring cell of the first RN.
  • the connection information includes: whether the first RN is connected to the eNB through another RN and/or whether the first RN is connected to the core network through the eNB. In this embodiment, whether the first RN is connected to the eNB through other RNs and/or the first one is determined by whether the RN and the eNB's ID (identity identification) information are in the neighboring cell table of the first RN. Whether the RN is connected to the core network through the eNB.
  • the specific field information is shown in Table 1 below:
  • the RN-related information added in the neighbor table of the RN is listed in Table 1. Whether the range of connection with the eNB is represented by 0-1: 0 means that there is no connection with the eNB, which means that the RN is directly connected to the core network, and the connected eNB information is invalid; 1 indicates that the RN is connected to the eNB, and the connected eNB information is valid.
  • the RN is connected to the core network through the eNB. If there is no ID of the eNB, the first RN is directly connected to the core network.
  • the first RN If the neighboring cell of the first RN has an ID of another RN, the first RN is in an adjacency relationship with the other RN, and according to the foregoing method, whether the eNB ID is determined in the neighboring cell table of the neighboring RN Whether the adjacent RN is connected to the core network through the eNB or directly accesses the core network.
  • the UE When the UE performs handover, according to the connection information in the neighbor table of the first RN.
  • the information of the neighboring RN is used to cut the corresponding steps in the handover process, such as: the step of reducing the data back-transmission operation.
  • connection information of the first RN and the eNB and the information of the neighboring RN are added to the neighboring cell of the first RN, and then further includes:
  • connection information in the neighboring cell table of the RN to the eNB, and save the information in the neighboring cell table of the eNB.
  • the information and the RN information connected by the eNB are modified for corresponding steps in the handover process. In this way, some unnecessary steps in the UE handover process are performed by the connection information of the eNB in the neighboring cell table of the eNB, for example, the data back-transfer operation between the RN and the connected eNB in the handover process is reduced. .
  • the S103 is configured to send the connection information in the neighboring cell table of the RN to the eNB, and save the information in the neighboring cell table of the eNB, so that when the UE performs handover, according to The connection information in the neighboring cell table of the eNB and the RN information connected by the eNB are used to cut corresponding steps in the handover process.
  • the steps in the handover process are performed according to the connection information in the neighboring cell table of the first RN, and the object of the present invention can also be achieved to achieve the present invention.
  • the goal of deploying RN is to enhance coverage, improve user throughput, and improve spectrum efficiency.
  • the RN is fixed.
  • the RN has a small cell range and is densely deployed.
  • the UE has a high density and can use Layer 3 Relay.
  • the UE may switch between the RNs, or the UE may switch between the RN and the eNB, or the UE may switch between the eNBs connected by the RN.
  • Embodiment 1 The UE switches between RNs, as shown in FIG. 4: RN1 is connected to RN2 and RN3 to different eNBs, that is, RN1 is connected to eNB1, RN2 and RN3 are connected to the same eNB2, and eNB1 and eNB2 are respectively connected to the core.
  • Network MME/S-GW
  • cell A belongs to RN1
  • cell B affiliated to RN2 cell C belongs to RN3.
  • the UE currently camps on cell B, and the UE sends a measurement report to RN2.
  • the RN2 finds that the signal quality of the cell A is better than that of the cell B, and the signal quality of the cell C is better than that of the cell B, and the RN2 decides that handover is required, and the cell A and the cell C are candidate cells of the handover target cell.
  • the RN2 checks the eNB connection information in the neighbor table and the information of the neighboring RN1, and finds that RN2 and RN1 are respectively connected to different eNBs, so the data in the handover process
  • the reverse transmission operation step may be performed only between the eNBs, or between the RNs, or simultaneously between the eNBs and the RNs.
  • the RN1 checks the information of the neighbor table, and finds that the RN2 and the RN3 are connected to the same eNB2, so the data back-transfer operation step in the handover process is only between the RNs. get on.
  • Embodiment 2 The UE switches between the RN1 connected to the eNB and the RN2 directly connected to the core network, as shown in FIG. 5: RN1 is connected to the eNB, RN2 is directly connected to the core network, and the cell A belongs to the RN1, and the cell B belongs to the RN2.
  • the UE currently camps on cell A, and the UE sends a measurement report to RN1.
  • RN1 finds that the signal quality of cell B is better than that of cell A, and the RN1 decision needs to be switched.
  • the RN1 checks the information of the neighboring cell table and finds that the RN1 is connected to the eNB, and the RN is directly connected to the core network. Therefore, the data back-transmission operation step in the handover process is only performed between the RNs, or the data back-transmission operation steps are performed.
  • Embodiment 3 The UE switches between the RN and the eNB connected to the RN.
  • the RN1 is connected to the eNB1
  • the eNB1 is connected to the core network
  • the cell A belongs to the RN1
  • the cell B belongs to the eNB1.
  • the specific implementation process is as follows:
  • the UE currently camps on cell A, and the UE sends a measurement report to RN1.
  • RN1 finds that the signal quality of cell B is better than that of cell A, and the RN1 decision needs to be switched.
  • the RN1 checks the information of the neighboring cell table and finds that the eNB1 to which the target cell belongs is the same as the eNB1 to which the RN1 is connected. Therefore, the data backhaul operation step in the handover process can be reduced.
  • the foregoing embodiment uses the handover of the UE in the Relay network as an example to describe whether the present invention connects to the eNB in the neighbor table of the RN node, and the related information of the connected eNB, and determines whether the related operation is performed when the related operation is switched. It is necessary to reduce related operations and reduce unnecessary steps to optimize the switching process and improve switching efficiency.
  • the embodiment of the present invention further provides a network device.
  • the network device includes: a list setting unit 710, configured to add connection information and adjacency of the first RN to the eNB in a neighbor table of the first RN. RN information;
  • the reducing unit 720 is configured to: when the UE performs the handover, perform, according to the connection information in the neighboring cell table of the first RN and the information of the neighboring RN, the corresponding step in the handover process.
  • the connection information includes: whether the first RN is connected to the core network through the eNB, or is directly connected to the core network; the information of the neighboring RN is: an ID of the neighboring RN, and an identifier of the neighboring RN
  • the neighboring cell table determines whether the neighboring RN is connected to the core network through the eNB or directly to the core network.
  • the network device further includes:
  • the information sending unit 730 is configured to send the connection information in the neighboring cell table of the RN to the eNB, and save the information in the neighboring cell table of the eNB, and when the UE performs the handover, according to the neighboring cell table of the eNB.
  • the connection information in the process is reduced for the corresponding steps in the handover process.
  • Corresponding steps in the handover process of the information of the neighboring cell table of the eNB are tailored to the phase in the handover process by using the connection information in the neighboring cell table of the first RN and the information of the neighboring RN.
  • the steps to be taken should be the same.
  • the network device further includes:
  • a report receiving unit 740 configured to receive a measurement report sent by the UE
  • the switching unit 750 is configured to determine, according to the measurement, a cell with the best signal quality and an RN or an eNB to which the cell with the best signal quality belongs, and switch the UE to the cell with the best signal quality.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de réseau permettant l'optimisation de relais dans un système d'Évolution à Long Terme (LTE, Long Term Evolution). Conformément à la solution de l'invention, les informations de connexion entre un premier nœud relais (RN, Relay Node) et un Nœud B évolué (eNB, enhanced Node B) et les informations du RN voisin sont ajoutées à la table de cellules voisines du premier RN (101) ; lorsqu'un équipement utilisateur (UE, User Equipment) effectue un transfert intercellulaire, les étapes du processus de transfert intercellulaire sont réduites en conformité avec les informations de connexion et avec les informations du RN voisin contenues dans la table de cellules voisines du premier RN (102). Lors du processus de transfert intercellulaire de l'UE, le procédé et le dispositif proposés par l'invention permettent d'optimiser le processus de transfert intercellulaire d'un réseau relais et améliorent l'efficacité du transfert intercellulaire du système LTE en évaluant l'état de la connexion entre un UE et un RN et l'état de la connexion entre un RN et un eNB.
PCT/CN2010/077473 2010-06-23 2010-09-29 Procédé et dispositif de réseau permettant l'optimisation de relais dans un système lte WO2011160352A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010208775.XA CN102300245B (zh) 2010-06-23 2010-06-23 Lte系统中继优化方法及网络设备
CN201010208775.X 2010-06-23

Publications (1)

Publication Number Publication Date
WO2011160352A1 true WO2011160352A1 (fr) 2011-12-29

Family

ID=45360338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/077473 WO2011160352A1 (fr) 2010-06-23 2010-09-29 Procédé et dispositif de réseau permettant l'optimisation de relais dans un système lte

Country Status (2)

Country Link
CN (1) CN102300245B (fr)
WO (1) WO2011160352A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103428789B (zh) * 2012-05-21 2016-08-10 普天信息技术研究院有限公司 一种中继设备的切换方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101014183A (zh) * 2005-10-17 2007-08-08 三星电子株式会社 无线接入通信系统中用于切换的设备和方法
CN101483893A (zh) * 2008-12-23 2009-07-15 同济大学 基于动态接入路径选择机制的快速接入点切换方法
WO2010026287A1 (fr) * 2008-09-08 2010-03-11 Nokia Corporation Modes de transmission adaptatifs pour un relais transparent
CN101742612A (zh) * 2008-11-19 2010-06-16 华为技术有限公司 保存邻区关系信息的方法、装置及演进基站

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101321240B1 (ko) * 2007-01-16 2013-12-19 삼성전자주식회사 이동통신시스템에서 홈셀 또는 개인네트워크로 셀 선택하는 장치 및 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101014183A (zh) * 2005-10-17 2007-08-08 三星电子株式会社 无线接入通信系统中用于切换的设备和方法
WO2010026287A1 (fr) * 2008-09-08 2010-03-11 Nokia Corporation Modes de transmission adaptatifs pour un relais transparent
CN101742612A (zh) * 2008-11-19 2010-06-16 华为技术有限公司 保存邻区关系信息的方法、装置及演进基站
CN101483893A (zh) * 2008-12-23 2009-07-15 同济大学 基于动态接入路径选择机制的快速接入点切换方法

Also Published As

Publication number Publication date
CN102300245B (zh) 2015-06-03
CN102300245A (zh) 2011-12-28

Similar Documents

Publication Publication Date Title
US10588065B2 (en) Method and apparatus for performing inter-MeNB handover without SeNB change in wireless communication system
JP6190058B2 (ja) 異種ネットワークにおいて２重接続の動作を実行するための方法及び装置
EP3035735B1 (fr) Procédé de transfert, station de base maître et station de base esclave
EP2547148B1 (fr) Procédé de commutation, dispositif de communication et système de communication
US8730918B2 (en) Handover method based on mobile relay and mobile wireless relay system
EP2982172B1 (fr) Indication de division d'une porteuse radio entre cellules par une requête de transfert
CN105637929A (zh) 用于数据承载路由的基站到接入点接口
JP5922145B2 (ja) 通信システム、無線通信ノード、及び通信制御方法
WO2009086787A1 (fr) Procédé et système pour notifier un type de cellule basé sur le système lte
CN107306455B (zh) 一种双连接操作的方法、基站、ue及mme
US20180049090A1 (en) Method for Transmitting Data during Base Station Handover, User Equipment, Base Station, and Storage Medium
WO2012155595A1 (fr) Procédé, station de base et terminal pour récupérer une connexion de contrôle de ressources radio
CN102143538B (zh) 一种无线接入网的切换方法及基站
CN106304060B (zh) 支持封闭成员组的双连接系统中的切换方法及系统
WO2015154345A1 (fr) Procédé et système pour mettre à jour un état d'identité de groupe d'abonnés fermé, et nœud b évolué
WO2013010393A1 (fr) Procédé et système pour nœud relais pour gérer un équipement utilisateur lors de l'interruption d'une liaison de retour
EP2836011B1 (fr) Appareils, procédés et programmes informatiques pour des émetteurs-récepteurs de station de base et un émetteur-récepteur mobile se rapportant à un changement de la réception de données de charge utile
EP2871887B1 (fr) Procédé de commutation de réseau, système correspondant, et dispositif sur le côté réseau
CN102413493A (zh) 决定重定位过程的方法和决定切换过程的方法
WO2011140777A1 (fr) Procédé et dispositif permettant de libérer rapidement des ressources côté source lors d'un transfert intercellulaire
WO2015014594A1 (fr) Appareils, procédés et programmes informatiques permettant à des émetteurs-récepteurs de stations de base de macrocellules et de petites cellules et à des émetteurs-récepteurs mobiles de fournir des informations de transfert
WO2011095127A1 (fr) Procédé d'acquisition d'informations de configuration et station de base
WO2024031289A1 (fr) Procédé de communication pour nœud de réseau, procédé de communication pour nœud mobile, nœud mobile et dispositif donneur
WO2011160352A1 (fr) Procédé et dispositif de réseau permettant l'optimisation de relais dans un système lte
CN102131250A (zh) 一种基于无线传输系统的数据前转方法及系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10853491

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10853491

Country of ref document: EP

Kind code of ref document: A1