WO2012174995A1 - Procédé, système et dispositif de commutation dans un réseau relais mobile - Google Patents

Procédé, système et dispositif de commutation dans un réseau relais mobile Download PDF

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Publication number
WO2012174995A1
WO2012174995A1 PCT/CN2012/076909 CN2012076909W WO2012174995A1 WO 2012174995 A1 WO2012174995 A1 WO 2012174995A1 CN 2012076909 W CN2012076909 W CN 2012076909W WO 2012174995 A1 WO2012174995 A1 WO 2012174995A1
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WO
WIPO (PCT)
Prior art keywords
node
handover
information
target node
relay
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PCT/CN2012/076909
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English (en)
Chinese (zh)
Inventor
杨宁
高有军
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China Mobile Communications Group Co Ltd
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China Mobile Communications Corp
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Publication of WO2012174995A1 publication Critical patent/WO2012174995A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • 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 mobile communication technologies, and in particular, to a handover method, system, and device in a mobile relay network. Background technique
  • LTE Long Term Evolution System
  • reselection and handover are defined for the mobile characteristics of a common terminal (UE).
  • UE common terminal
  • Figure 1 shows the main handover procedures in the current LTE system.
  • the process includes:
  • Step 101 The network side configures the terminal to perform radio link measurement.
  • Step 102 The terminal performs radio link quality measurement according to the configuration on the network side, and reports the measurement result according to the network configuration event.
  • Step 103 The source eNB determines whether to perform handover according to the measurement result reported by the terminal, and sends a handover request to the target base station (Target eNB), where the context information of the terminal is included.
  • Target eNB target base station
  • Step 104 The target base station receives the handover request, and feeds back, by the source base station, target base station information to the terminal, and a corresponding preamble Preamble and the like allocated by the target base station to the terminal.
  • Step 105 The terminal synchronizes with the target base station, and performs radio resource reconfiguration. After the reconfiguration is completed, the reconfiguration complete message is sent, indicating that the reconfiguration is complete.
  • FIG. 2 is a detailed flow of a handover method of the current LTE system.
  • the process includes:
  • Step 1 The source base station sends a Measurement Control message to the UE, where
  • Step 2 The UE performs radio link measurement according to the measurement control message, and sends measurement reports (Measure Reports) to the source base station.
  • Step 3 The source base station makes a handover decision (HO decision) according to the measurement result.
  • Steps 4 to 7 are for the Handover Preparation phase.
  • Step 4 When the source base station determines that the UE needs to perform handover, send a Handover Request message to the target base station.
  • Step 5 The target base station performs admission control according to the handover request message.
  • Step 6 After the target base station determines to accept the UE, send a Handover Request Ack message to the source base station.
  • Step 7 The source base station sends downlink resource configuration (DL allocation) information, radio link connection reconfiguration information (RRC Conn. Reconf. incl.), mobility control information, and the like to the UE.
  • DL allocation downlink resource configuration
  • RRC Conn. Reconf. incl. radio link connection reconfiguration information
  • mobility control information and the like to the UE.
  • Steps 8 to 11 are the Handover Execution phase: the UE leaves the source cell and synchronizes to the new cell; the source base station forwards the buffered data to the target base station.
  • steps 8 to 11 are respectively:
  • Step 8 The source base station forwards data to the target base station (SN Status Transfer).
  • Step 9 The UE sends a synchronization request (Synchronisation) to the target base station.
  • Step 10 The target base station sends uplink resource allocation information and an uplink time adjustment advance amount (TA) to the UE.
  • TA uplink time adjustment advance amount
  • Step 11 The UE and the target base station complete radio resource reconfiguration.
  • Steps 12 through 18 are the Handover Completion phases.
  • steps 12 to 18 are respectively:
  • Step 12 The target base station sends a Path Switch Request message to the mobility management entity (MME).
  • MME mobility management entity
  • Step 13 The MME sends a User Plane update request message to the Serving Gateway.
  • Step 14 The serving gateway performs downlink path switching.
  • Step 15 The service gateway sends a user plane update response to the MME (User Plane update Response ) message.
  • MME User Plane update Response
  • Step 16 The MME sends a Path Switch Request Ack message to the target base station.
  • Step 17 The target base station sends a UE Context Release message to the source base station.
  • Step 18 The source base station releases the resources occupied by the UE.
  • the UE in the handover process of the existing UE, the UE first performs radio link measurement according to the configuration of the network side, and then reports the measurement report. After the handover decision is made on the network side, the UE also needs to wait for the handover preparation information delivered by the network side. For example, downlink resource configuration information, radio link connection reconfiguration information, and the like, and then switched to the target base station according to the handover preparation information, and therefore, the entire handover procedure is long.
  • the relay node acts as a base station for the UE and as a UE for the base station.
  • the relay network it is in is called a mobile relay network.
  • a mobile relay network for example, a mobile relay network set up in a high-speed rail environment
  • the wireless network environment changes also [very fast, if the handover process of the existing UE is still used.
  • the handover occurs because the time from the source base station making the handover decision to the completion of the relay node handover is too long, and the wireless network environment when the relay node actually performs the handover is compared to the wireless network environment when the source base station makes the handover decision. Large changes can easily cause the relay node to fail to switch, which ultimately leads to a decrease in the relay node switching success rate.
  • the link between the relay node and the base station is called a backhaul link. If the relay node fails to switch, it will not be able to communicate with the base station through the backhaul link. Because of the relay network, some UEs are relayed. The node communicates with the base station. Therefore, once the relay node fails to switch, the part of the UE cannot communicate with the network side, and the consequences are serious. Summary of the invention
  • the present invention provides a handover method, system and device in a mobile relay network to improve handover success rate.
  • a handover method in a mobile relay network comprising: The relay node performs backhaul link measurement, and makes a handover decision according to the backhaul link measurement result; the relay node switches to the target node of the current handover according to the handover decision result made by the relay node.
  • a handover system in a mobile relay network comprising a relay node, a source node currently camped by the relay node, and a target node of the current handover;
  • the relay node is configured to perform a backhaul link measurement between the relay node and the source node, and perform a handover decision according to the backhaul link measurement result, and when it is determined that the handover needs to be performed,
  • the source node currently camping on the relay node sends a handover request message, and performs handover to the target node of the current handover, where the handover request message carries the target node information of the current handover;
  • the source node currently camped on the relay node sends the context information and the downlink data that the source node needs to send to the relay node to the target node according to the target node information carried in the handover request message.
  • the context information is context information of the relay node and/or the UE covered by the relay node;
  • the target node is configured to receive and store the context information and the downlink data.
  • a relay device comprising: a measurement module, a decision module, and a handover module; the measurement module, configured to perform backhaul link measurement;
  • the determining module is configured to make a handover decision according to the backhaul link measurement result
  • the switching module is configured to switch to the target node of the current handover according to the handover decision result of the decision module.
  • a base station device comprising a receiving module and a sending module
  • the receiving module is configured to receive a handover request message sent by the relay node, where the handover request message carries the target node information that the relay node performs handover this time;
  • the sending module is configured to send, according to the target node information carried in the handover request message, context information and downlink data that needs to be sent to the relay node, where the context information is the relay node. And/or context information of the UE covered by the relay node.
  • the base station device may further include a handover preparation module
  • the handover pre-preparation module is configured to send a handover preparation message to each candidate target node, and forward information of each candidate target node itself returned by each candidate target node to the relay node.
  • a method of processing handover information comprising:
  • the source node to which the relay node belongs receives the handover request message sent by the relay node, where the handover request message carries the target node information that the relay node performs handover this time;
  • the source node sends the context information and the downlink data that the source node needs to send to the relay node to the target node according to the target node information carried in the handover request message, where the context information is the relay node. And/or context information of the UE covered by the relay node.
  • the method for processing the switching information may further include:
  • the source node sends a handover preparation message to each candidate target node, and forwards information of each candidate target node itself returned by each candidate target node to the relay node.
  • the relay node after the relay node performs the backhaul link measurement, the measurement result is not required to be reported to the network side, and the relay node itself performs the handover decision, thereby saving the measurement result to the network side. Therefore, the time required for handover can be greatly shortened, so that in the mobile scenario, the wireless network environment when the relay node actually performs handover and the change of the wireless network environment when the handover decision is made are small, thereby improving the relay node. Switch the success rate.
  • the base station device and the method for processing the handover information provided by the present invention enable the network side to perform corresponding handover information processing when the handover node makes a handover decision, so that the relay node can successfully complete the handover.
  • Figure 1 is the main handover procedure in the current LTE system
  • FIG. 2 is a detailed handover procedure of the current LTE system
  • FIG. 3 is a flowchart of a handover method in a mobile relay network provided by the present invention.
  • FIG. 4 is a detailed flowchart of a handover method in a mobile relay network provided by the present invention.
  • FIG. 5 is a schematic diagram of the composition of a handover system in a mobile relay network provided by the present invention.
  • FIG. 6 is a structural diagram of a relay device provided by the present invention. detailed description The preferred embodiments of the present invention are described with reference to the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention.
  • the present invention optimizes the handover procedure shown in FIG. 1 and FIG. 2, and shortens the handover procedure to complete the fast handover of the relay node in the mobile relay network, ensuring that the relay node completes the handover in a short time, and improves the handover success.
  • the rate improves the security of the backhaul link to a certain extent, thereby avoiding the situation that the UE covered by the relay node cannot communicate with the network side due to the failure of the relay handover.
  • FIG. 3 is a flow chart of a handover method in a mobile relay network provided by the present invention.
  • the method includes:
  • Step 301 The relay node performs backhaul link measurement.
  • the relay node performs backhaul link measurement according to the requirements of other network nodes other than the relay node and/or the configuration of the relay node itself.
  • Step 302 The relay node makes a handover decision according to the backhaul link measurement result.
  • the relay node After the relay node makes a handover decision, it may send a handover request message to the source node where the relay node currently camps.
  • the handover request message may carry the target node information of the current handover.
  • Step 303 The relay node performs handover to the target node of the current handover according to the handover decision result made by the relay node.
  • the source node currently camped by the relay node sends the context information and the source node to the location according to the target node information carried in the handover request message.
  • the downlink data of the relay node is sent to the target node, and the context information is context information of the relay node and/or the UE covered by the relay node.
  • the relay node performs the handover to the target node of the current handover, and can be implemented by using at least the following two embodiments:
  • the relay node obtains information of each candidate target node in advance, and the information of each candidate target node includes access information of each candidate target node, and relays.
  • the relay node determines the access information of the target node of the current handover according to the access information obtained in advance, and accesses according to the access information of the target node of the current handover. The target node of the current handover.
  • the information that the relay node obtains the information of each candidate target node in advance may include: the source node currently camped on by the relay node sends a handover preparation message to each candidate target node, and each candidate target After receiving the handover preparation message, the node sends the information of the candidate target node itself to the relay node by using the source node.
  • each candidate target node may also pass the radio resource configuration information through the relay.
  • the source node that the node is currently camping on is sent to the relay node. Then, the relay node may perform radio link reconfiguration according to the radio resource configuration information of the target node of the current handover.
  • the relay node can access the target node of the current handover through a random access procedure.
  • the relay node may be a mobile relay node, for example, a mobile relay node disposed on a high-speed train, the source node is generally a source base station, and the target node is generally a target base station.
  • the source node may determine alternative target nodes according to physical location relationships or the like of other nodes. For example, in a high-speed rail environment, the source base station may determine other neighboring base stations along which the high-speed train is arranged as an alternative target base station.
  • the handover method provided by the present invention is described in detail below by using the first embodiment to switch to the target node of the current handover. For details, refer to FIG. 4 .
  • FIG. 4 is a detailed flowchart of a handover method in a mobile relay network provided by the present invention.
  • the process includes:
  • Step 401 The relay node receives the handover measurement configuration information sent by the source base station, and performs backhaul link measurement according to the handover measurement configuration information.
  • the relay node may also perform backhaul link measurement according to its own configuration. If the relay node performs backhaul link measurement according to its own configuration, the source base station does not need to send handover measurement configuration information to the relay node.
  • Step 402 The source base station sends a handover preparation message to each candidate target base station, and each candidate target base station sends its own access information and radio resource configuration information to the relay node through the source base station.
  • the source base station may determine an candidate target base station according to a physical location relationship between the base stations.
  • Step 403 The relay node performs a handover decision according to the measurement result of the backhaul link.
  • Steps 404 to 405 are preparation preparation phases.
  • Step 404 The relay node sends a handover request message to the source base station, where the target base station information of the current handover is carried.
  • Step 405 The source base station sends a handover request to the target base station of the current handover according to the handover request message sent by the relay node.
  • Step 406 is to switch the execution phase.
  • Step 406 The relay node establishes synchronization with the target base station according to the access information and the radio resource configuration information of the target base station that is currently switched.
  • the source base station stores downlink data that needs to be sent to the relay node, and the downlink data and the middle
  • the context information of the UE that is covered by the node is sent to the target base station of the current handover, and the target base station of the current handover stores the downlink data sent by the source node and the context information.
  • the relay node establishes synchronization with the target base station, and after establishing synchronization with the relay node, the target base station allocates downlink resources to the relay node.
  • the target base station may further send a handover request acknowledgement message to the source base station of the relay node, where the handover request acknowledgement message is an optional message.
  • the source base station of the relay node After the source base station of the relay node sends the handover request message to the target base station of the current handover, the downlink data that needs to be sent to the relay node and the context information of the UE that is covered by the relay node are forwarded to the target base station of the handover.
  • the target base station of the current handover stores downlink data and the context information sent by the source base station.
  • the relay node After establishing the synchronization with the target base station of the current handover and receiving the downlink resource allocation information sent by the target base station of the current handover, the relay node transmits a message indicating that the handover is completed to the target base station of the current handover.
  • the message that the identity switch is completed is also an optional message.
  • the relay node sends a handover request message to the source base station, and the source base station configures the relay node to perform measurement result reporting and performs handover decision according to the report result, and the source base station Sending a handover request message to the target base station, the target base station sends a handover response message to the source base station, the source base station instructs the relay node to perform handover according to the handover response message, and sends corresponding configuration information to the relay node, and the relay node switches according to the corresponding configuration. Go to the target base station.
  • Steps 12 to 18 in Fig. 4 are the switching completion stages, which are the same as steps 12 to 18 in Fig. 2.
  • the handover node performs the handover decision, and the relay node does not.
  • the measurement report needs to be reported to the network side, and the handover decision result on the network side is not required. Therefore, the handover procedure can be shortened.
  • the base station sends the access information necessary for the candidate target base station in advance, such as a random access (RACH) codeword.
  • RACH random access
  • the candidate target base station is a base station to which the target cell to which the relay node may be handed over, and the source base station may send a list of target cells that may be handed over, and access information of each target cell that may be handed over to the medium. Following the node.
  • the present invention also provides a handover system and a relay device, as shown in FIG. 5 to FIG. 6.
  • FIG. 5 is a schematic diagram of the composition of a handover system in a mobile relay network provided by the present invention.
  • the switching system includes a relay node 501, a source node 502 in which the relay node currently resides, and a target node 503 of the current handover.
  • the relay node 501 is configured to perform a backhaul link measurement between the relay node 501 and the source node 502, and make a handover decision according to the backhaul link measurement result, and when it is determined that the handover needs to be performed, to the relay
  • the source node 502 that the node currently resides sends a handover request message to the target node 503 of the current handover, where the handover request message carries the information of the target node 503 of the current handover.
  • the source node 502 currently camping on the relay node sends the context information and the downlink data that the source node needs to send to the relay node to the target node 503 according to the target node information carried in the handover request message.
  • the context information is context information of the relay node and/or the UE covered by the relay node.
  • the target node 503 is configured to receive and store the context information and the downlink data.
  • the relay node 501 may be further configured to obtain information of each candidate target node in advance before the handover decision is made, where the information of each candidate target node includes access information of each candidate target node, according to The access information obtained in advance determines the access information of the target node 503 of the current handover, and accesses the target node 503 of the current handover according to the access information of the target node 503 of the current handover.
  • the source node 502 currently camped on by the relay node 501 can be used to send a handover preparation message to each candidate target node.
  • Each of the candidate target nodes may send the information of the candidate target node itself to the relay node 501 through the source node 502 after receiving the handover preparation message.
  • the information of each candidate target node may further include: radio resources of each candidate target node Configuration information.
  • the relay node 501 may be further configured to perform radio resource reconfiguration according to the radio resource configuration information of the target node that is currently switched.
  • the relay node 501 can also be used to access the target node of the current handover through random access.
  • 6 is a structural diagram of a relay device provided by the present invention.
  • the relay device includes a measurement module 601, a decision module 602, and a switching module 603.
  • the measuring module 601 is configured to perform backhaul link measurement.
  • the decision module 602 is configured to make a handover decision according to the backhaul link measurement result.
  • the switching module 603 is configured to switch to the target node of the current handover according to the handover decision result of the decision module 602.
  • the measurement module 601 is configured to perform backhaul link measurement according to requirements of other network nodes and/or configurations of the relay device itself.
  • the switching module 603 can be configured to send a handover request message to a source node that the relay device currently camps on.
  • the relay device also includes an information obtaining module.
  • the information obtaining module is configured to obtain, before the decision module 602 makes a handover decision, information of each candidate target node, where the information of each candidate target node includes access information of each candidate target node. .
  • the switching module 603 is configured to determine access information of the target node of the current handover according to the access information obtained in advance, and access the target node of the current handover according to the access information of the target node that is currently switched.
  • the relay device also includes a wireless link reconfiguration module.
  • the information of each candidate target node further includes radio resource configuration information of each candidate target node.
  • the radio link reconfiguration module is configured to perform radio link reconfiguration according to the radio resource configuration information of the target node that is currently switched.
  • the switching module 603 can be configured to access the target node of the current handover by using random access.
  • the present invention also provides a base station device, which includes a receiving module and a transmitting module.
  • the receiving module is configured to receive a handover request message sent by the relay node, where the handover request message carries the target node information that the relay node performs handover this time.
  • the sending module is configured to send, according to the target node information carried in the handover request message, context information and downlink data that needs to be sent to the relay node, where the context information is the relay node. And/or context information of the UE covered by the relay node.
  • the base station device may further include a handover preparation module.
  • the handover pre-preparation module is configured to send a handover preparation message to each candidate target node, and forward information of each candidate target node itself returned by each candidate target node to the relay node.

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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, un système et un dispositif de commutation dans un réseau relais mobile. Le procédé comprend les étapes suivantes : un nœud relais effectue une mesure de liaison de retour et prend une décision de commutation selon le résultat de la mesure de liaison de retour ; et le nœud relais effectue une commutation vers un nœud cible de cette commutation selon le résultat de la décision de commutation prise par le nœud relais. L'application de la présente invention permet d'améliorer le taux de réussite de commutations.
PCT/CN2012/076909 2011-06-24 2012-06-14 Procédé, système et dispositif de commutation dans un réseau relais mobile Ceased WO2012174995A1 (fr)

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CN201110175561.1A CN102843716B (zh) 2011-06-24 2011-06-24 一种移动中继网络中的切换方法、系统和设备

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210258847A1 (en) * 2018-07-05 2021-08-19 Lenovo (Beijing) Limited Method and apparatus for backhaul link switching

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103974374B (zh) * 2013-01-29 2018-02-23 中国移动通信集团公司 一种接入控制方法及装置
EP3114882B1 (fr) * 2014-03-06 2018-10-10 LG Electronics Inc. Procédé et appareil pour effectuer un transfert intercellulaire dans un système de communication sans fil
CN106686674B (zh) * 2015-11-05 2019-12-13 索尼公司 无线通信系统中的电子设备和无线通信方法
CN105744477B (zh) * 2016-03-07 2019-07-12 深圳百米宏创网络信息有限公司 一种列车的无线通信系统及方法
CN109328483A (zh) * 2016-07-04 2019-02-12 华为技术有限公司 一种无线链路失败处理方法、相关设备及通信系统
CN107483330B (zh) * 2017-07-20 2020-07-03 深圳市盛路物联通讯技术有限公司 一种中继器桥接方法和网关
CN113068240B (zh) 2018-02-14 2023-01-10 维沃移动通信有限公司 一种回传路径的转换方法、无线中继、网络侧节点及终端
JP6967491B2 (ja) * 2018-07-12 2021-11-17 Kddi株式会社 中継伝送路を含んだハンドオーバが実行される無線通信システムにおける端末装置、基地局装置、その制御方法、及びプログラム
CN113676963B (zh) * 2020-05-14 2023-03-14 展讯通信（上海）有限公司 切换方法及装置、存储介质、终端
WO2022036612A1 (fr) * 2020-08-19 2022-02-24 Oppo广东移动通信有限公司 Procédé de commutation de nœud relais, dispositif terminal et dispositif de réseau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1477887A (zh) * 2002-06-24 2004-02-25 日本电气株式会社 移动通信系统、无线电交换方法、移动基站和移动终端
US20080108350A1 (en) * 2006-11-07 2008-05-08 Motorola, Inc. Intermediate station and method for facilitating handover in a multi-hop communication system
WO2008084943A1 (fr) * 2007-01-08 2008-07-17 Electronics And Telecommunications Research Institute Procédé de transfert utilisant une station relais présentant une fonction de commande de transfert et système de relais à sauts multiples
CN101651971A (zh) * 2009-09-15 2010-02-17 新邮通信设备有限公司 一种下行切换方法及系统
CN101841824A (zh) * 2009-03-17 2010-09-22 大唐移动通信设备有限公司 一种实现小区切换的方法、系统和中继设备
CN101965027A (zh) * 2009-07-23 2011-02-02 中兴通讯股份有限公司 一种小区同步切换的方法和系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1477887A (zh) * 2002-06-24 2004-02-25 日本电气株式会社 移动通信系统、无线电交换方法、移动基站和移动终端
US20080108350A1 (en) * 2006-11-07 2008-05-08 Motorola, Inc. Intermediate station and method for facilitating handover in a multi-hop communication system
WO2008084943A1 (fr) * 2007-01-08 2008-07-17 Electronics And Telecommunications Research Institute Procédé de transfert utilisant une station relais présentant une fonction de commande de transfert et système de relais à sauts multiples
CN101841824A (zh) * 2009-03-17 2010-09-22 大唐移动通信设备有限公司 一种实现小区切换的方法、系统和中继设备
CN101965027A (zh) * 2009-07-23 2011-02-02 中兴通讯股份有限公司 一种小区同步切换的方法和系统
CN101651971A (zh) * 2009-09-15 2010-02-17 新邮通信设备有限公司 一种下行切换方法及系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210258847A1 (en) * 2018-07-05 2021-08-19 Lenovo (Beijing) Limited Method and apparatus for backhaul link switching
US11864043B2 (en) * 2018-07-05 2024-01-02 Lenovo (Beijing) Limited Method and apparatus for backhaul link switching

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