WO2017121406A1 - Procédé et dispositif d'établissement d'ensemble coopératif - Google Patents

Procédé et dispositif d'établissement d'ensemble coopératif Download PDF

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Publication number
WO2017121406A1
WO2017121406A1 PCT/CN2017/071292 CN2017071292W WO2017121406A1 WO 2017121406 A1 WO2017121406 A1 WO 2017121406A1 CN 2017071292 W CN2017071292 W CN 2017071292W WO 2017121406 A1 WO2017121406 A1 WO 2017121406A1
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WIPO (PCT)
Prior art keywords
user equipment
channel quality
backhaul link
information
link
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PCT/CN2017/071292
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English (en)
Chinese (zh)
Inventor
何青春
谢峰
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中兴通讯股份有限公司
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Publication of WO2017121406A1 publication Critical patent/WO2017121406A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • This document relates to, but is not limited to, the field of wireless communication technologies, and in particular, to a method and apparatus for establishing a cooperative set.
  • a user equipment at the cell edge or a user equipment without a macro cell coverage may need to be assisted by the user equipment to access the wireless network to maintain normal voice and data services or obtain better quality of service.
  • the development law of user equipment penetration rate determines that the initial version of user equipment is not much in the total amount of user equipment, or even the proportion is small.
  • a large number of low-level user equipments are not only difficult to obtain from high-level networks. It will benefit and will make the high performance of the high-level network not fully utilized. This problem will exist between the high-version user devices of different sub-versions even after the low-level user devices completely exit the market.
  • the multiple user cooperative communication is a technology for improving the throughput of a certain UE by using a plurality of User Equipments (UEs) in a wireless communication system.
  • UEs User Equipments
  • the cooperative user equipment serves as a data relay between the base station and the benefit user equipment, and forwards the wireless service data between the base station and the benefit user equipment.
  • the wireless link between the base station and the benefit user equipment is defined as a direct link, which has a relatively small bandwidth and a low data rate.
  • the wireless link between the base station and the cooperative user equipment is defined as a backhaul link, which has a large bandwidth and a high data rate.
  • the wireless link between the collaborative user equipment and the benefit user equipment is defined as an access link, because the number of beneficial user equipments served by the cooperative user equipment is generally not large, and the distance between the cooperative user equipment and the beneficial user equipment is relatively close.
  • the link quality is good, so the data rate of the access link is usually higher than the direct link.
  • the information interaction between the multiple network elements causes the establishment delay of the cooperation set to be large.
  • This paper provides a method and device for establishing a collaboration set, which can reduce the delay of collaboration set establishment.
  • An embodiment of the present invention provides a method for establishing a collaboration set, which is applied to a collaborative user equipment, and the method includes:
  • the backhaul link is a communication link between the coordinated user equipment and the base station; the cooperation information includes channel quality information of the backhaul link.
  • the method further includes:
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the cooperative user equipment and the benefit user equipment.
  • the acquiring channel quality information of the backhaul link includes:
  • Measure a downlink pilot transmitted by the base station determine a channel quality of the backhaul link according to the measurement result, or receive a broadcast message that carries the cooperation information sent by the base station, where the collaboration information includes channel quality information of the backhaul link .
  • the broadcasting the broadcast message carrying the collaboration information to the benefit user equipment includes:
  • the embodiment of the invention further provides a method for establishing a cooperative set, which is applied to a base station, and the method package include:
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the backhaul link is a communication link between the cooperative user equipment and the base station.
  • the method before receiving the measurement event reported by the benefit user equipment or the measurement event reported by the benefit user equipment that is forwarded by the user equipment, the method further includes:
  • the cooperation information includes channel quality information of the backhaul link.
  • the acquiring channel quality information of the backhaul link includes:
  • the uplink reference signal sent by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • the embodiment of the present invention further provides a method for establishing a collaboration set, which is applied to a benefit user equipment, and the method includes:
  • the measurement event is reported to the coordinated user equipment or the base station;
  • the measurement event includes: a channel quality measurement result of the access link and a backhaul link.
  • Channel quality measurement result a channel quality measurement result of the access link and a backhaul link.
  • the backhaul link is a communication link between the cooperative user equipment and the base station;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the collaboration information includes the back Channel quality information of the transmitted link.
  • the acquiring channel quality information of the access link includes:
  • the downlink pilot transmitted by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • the embodiment of the present invention further provides a device for establishing a collaboration set, which is applied to a collaborative user equipment, and includes:
  • An information acquiring module configured to acquire channel quality information of a backhaul link between the base station and the coordinated user equipment
  • a broadcast module configured to broadcast a broadcast message carrying the collaboration information to the benefit user equipment
  • the backhaul link is a communication link between the coordinated user equipment and the base station; the cooperation information includes channel quality information of the backhaul link.
  • the device further includes:
  • the receiving and reporting module is configured to receive the measurement event reported by the benefit user equipment and forward the measurement event to the base station;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the cooperative user equipment and the benefit user equipment.
  • the information acquiring module is configured to obtain channel quality information of the backhaul link in the following manner:
  • Measure a downlink pilot transmitted by the base station determine a channel quality of the backhaul link according to the measurement result, or receive a broadcast message that carries the cooperation information sent by the base station, where the collaboration information includes channel quality information of the backhaul link .
  • the broadcast module is configured to broadcast the broadcast message carrying the collaboration information to the benefit user equipment in the following manner:
  • the embodiment of the present invention further provides a device for establishing a cooperation set, which is applied to a base station, and includes:
  • a receiving module configured to receive a measurement event reported by the benefit user equipment or a measurement event reported by the beneficial user equipment forwarded by the coordinated user equipment;
  • a decision module configured to determine, according to the measurement event, whether the collaborative user equipment is instructed to establish a collaboration set
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the backhaul link is a communication link between the cooperative user equipment and the base station.
  • the device further includes:
  • a broadcast module configured to acquire channel quality information of a backhaul link between the base station and the coordinated user equipment, and broadcast a broadcast message carrying the cooperation information to the cooperative user equipment or the benefit user equipment;
  • the cooperation information includes channel quality information of the backhaul link.
  • the broadcast module is configured to obtain channel quality information of the backhaul link in the following manner:
  • the uplink reference signal sent by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • the embodiment of the invention further provides a device for establishing a collaboration set, which is applied to the benefit user equipment, and includes:
  • a first information acquiring module configured to receive a broadcast message carrying the cooperation information sent by the base station or the coordinated user equipment, and acquire channel quality information of the backhaul link between the base station and the coordinated user equipment;
  • a second information acquiring module configured to acquire channel quality information of the access link when the channel quality of the backhaul link meets the first threshold requirement
  • the reporting module is configured to report a measurement event to the coordinated user equipment or the base station when the channel quality of the access link meets the second threshold requirement;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the backhaul link is a communication link between the cooperative user equipment and the base station;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the collaboration information includes the back Channel quality information of the transmitted link.
  • the second information acquiring module is configured to obtain channel quality information of the access link in the following manner:
  • the downlink pilot transmitted by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.
  • a method and an apparatus for establishing a collaboration set carries a collaboration message that can be used to establish a priori information for a collaboration set in a broadcast message sent to a benefit user equipment, thereby reducing a collaboration set. Established delay.
  • FIG. 1 is a schematic diagram of a network architecture of multi-user cooperative communication in the related art
  • FIG. 2 is a flowchart (collaboration user equipment) of a method for establishing a collaboration set according to an embodiment of the present invention
  • FIG. 3 is a flowchart (base station) of a method for establishing a cooperative set according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for establishing a collaboration set according to an embodiment of the present invention (beneficial user equipment);
  • FIG. 5 is a schematic diagram of a device for establishing a collaboration set according to an embodiment of the present invention (collaborative user equipment);
  • FIG. 6 is a schematic diagram of a device (base station) for establishing a cooperation set according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a device for establishing a collaboration set according to an embodiment of the present invention (beneficial user equipment);
  • FIG. 8 is a schematic diagram of establishing a collaboration set in a single link scenario according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of establishing a collaboration set in a dual link scenario according to an embodiment of the present invention.
  • an embodiment of the present invention provides a method for establishing a collaboration set, which is applied to a collaborative user equipment, and the method includes:
  • the backhaul link is a communication link between the coordinated user equipment and the base station;
  • the cooperation information includes channel quality information of a backhaul link
  • the collaboration information further includes an identifier of the coordinated user equipment corresponding to the backhaul link;
  • the acquiring channel quality information of the backhaul link includes:
  • Measure a downlink pilot transmitted by the base station determine a channel quality of the backhaul link according to the measurement result, or receive a broadcast message that carries the cooperation information sent by the base station, where the collaboration information includes channel quality information of the backhaul link ;
  • the downlink pilot includes but is not limited to a cell reference signal CRS (Cell Reference Signal);
  • the broadcast message carrying the collaboration information is broadcast to the benefit user equipment, including:
  • the method further includes:
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • an embodiment of the present invention provides a method for establishing a cooperative set, which is applied to a base station, and the method includes:
  • S301 Receive a measurement event reported by the benefit user equipment or a measurement event reported by the beneficial user equipment forwarded by the coordinated user equipment;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the backhaul link is a communication link between the cooperative user equipment and the base station.
  • the method further includes: before receiving the measurement event reported by the benefit user device or the measurement event reported by the benefit user equipment forwarded by the collaborative user equipment, the method further includes:
  • the cooperation information includes channel quality information of the backhaul link.
  • the collaboration information further includes an identifier of the coordinated user equipment corresponding to the backhaul link.
  • the acquiring channel quality information of the backhaul link includes:
  • the uplink reference signal includes: a sounding reference signal SRS (Sounding Reference Signal);
  • the determining, according to the measurement event, whether the collaborative user equipment is instructed to establish a collaboration set includes:
  • the cooperative user equipment is indicated as Deriving the user equipment to establish a collaboration set
  • the most suitable cooperative user equipment is selected according to the access link channel quality, the backhaul link channel quality, and the load corresponding to each coordinated user equipment, and the indication is
  • the selected collaborative user equipment establishes a collaboration set for the beneficial user equipment
  • an embodiment of the present invention provides a method for establishing a collaboration set, which is applied to a benefit user equipment, and the method includes:
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the backhaul link is a communication link between the cooperative user equipment and the base station;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the collaboration information includes the back Channel quality information of the transmission link;
  • the measurement event is used by the base station to determine whether the collaborative user equipment is instructed to establish a collaboration set.
  • the collaboration information further includes an identifier of the coordinated user equipment corresponding to the backhaul link.
  • the acquiring channel quality information of the access link includes:
  • the downlink pilot includes but is not limited to a cell reference signal CRS (Cell Reference Signal);
  • the measuring the downlink pilot transmitted by the coordinated user equipment includes:
  • the first threshold is configured by the base station to measure channel quality of the backhaul link
  • the second threshold is configured by the base station to measure channel quality of the access link.
  • an embodiment of the present invention provides a device for establishing a collaboration set, which is applied to a collaborative user equipment, including:
  • the information obtaining module 501 is configured to acquire channel quality information of a backhaul link between the base station and the coordinated user equipment.
  • the broadcast module 502 is configured to broadcast a broadcast message carrying the collaboration information to the benefit user equipment;
  • the backhaul link is a communication link between the coordinated user equipment and the base station; the cooperation information includes channel quality information of the backhaul link.
  • the device further comprises:
  • the receiving and reporting module 503 is configured to receive the measurement event reported by the benefit user equipment and forward the measurement event to the base station;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the cooperative user equipment and the benefit user equipment.
  • the information acquiring module 501 is configured to obtain channel quality information of the backhaul link in the following manner:
  • Measure a downlink pilot transmitted by the base station determine a channel quality of the backhaul link according to the measurement result, or receive a broadcast message that carries the cooperation information sent by the base station, where the collaboration information includes channel quality information of the backhaul link .
  • the broadcast module 502 is configured to broadcast the broadcast message carrying the collaboration information to the user equipment in the following manner, including:
  • an embodiment of the present invention provides a device for establishing a cooperative set, which is applied to a base station, and includes:
  • the receiving module 601 is configured to receive the measurement event reported by the benefit user equipment or the measurement event reported by the beneficial user equipment forwarded by the coordinated user equipment;
  • the determining module 602 is configured to determine, according to the measurement event, whether the collaborative user equipment is instructed to establish a collaboration set;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the backhaul link is a communication link between the cooperative user equipment and the base station.
  • the device further comprises:
  • the broadcast module 603 is configured to acquire channel quality information of a backhaul link between the base station and the coordinated user equipment, and broadcast a broadcast message carrying the cooperation information to the cooperative user equipment or the benefit user equipment;
  • the cooperation information includes channel quality information of the backhaul link.
  • the broadcast module 603 is configured to acquire the backhaul link in the following manner.
  • Channel quality information :
  • the uplink reference signal sent by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • an embodiment of the present invention provides a device for establishing a collaboration set, which is applied to a user equipment, including:
  • the first information acquiring module 701 is configured to receive a broadcast message carrying the cooperation information sent by the base station or the coordinated user equipment, and acquire channel quality information of the backhaul link between the base station and the coordinated user equipment;
  • the second information acquiring module 702 is configured to acquire channel quality information of the access link when the channel quality of the backhaul link meets the first threshold requirement;
  • the reporting module 703 is configured to report a measurement event to the coordinated user equipment or the base station when the channel quality of the access link meets the second threshold requirement;
  • the measurement event includes: a channel quality measurement result of the access link and a channel quality measurement result of the backhaul link;
  • the backhaul link is a communication link between the cooperative user equipment and the base station;
  • the access link is a communication link between the benefit user equipment and the cooperative user equipment;
  • the collaboration information includes the back Channel quality information of the transmitted link.
  • the second information acquiring module 702 is configured to obtain channel quality information of the access link in the following manner:
  • the downlink pilot transmitted by the coordinated user equipment is measured, and the channel quality of the backhaul link is determined according to the measurement result.
  • the downlink pilot includes but is not limited to a cell reference signal CRS (Cell Reference Signal);
  • Step S801 The cooperative user equipment sends a broadcast message carrying the cooperation information, and the benefit user equipment receives the broadcast message and acquires the collaboration information.
  • the cooperative user equipment includes: a handheld user equipment, an RRU (Remote Radio Unit) supporting a wireless backhaul line backhaul, a relay, and the like;
  • RRU Remote Radio Unit
  • the benefit user equipment includes: a handheld mobile user equipment;
  • the broadcast message is generated by the coordinated user equipment, or is a broadcast message of the base station that is forwarded by the coordinated user equipment.
  • the coordinated user equipment forwards the broadcast message carrying the cooperation information to the benefit user equipment.
  • the collaboration information is reference information required for establishing a collaboration set, including but not limited to: a backhaul link channel quality parameter and an ID of the collaborative user equipment; the collaboration information can be the collaboration set Establish a priori information.
  • the backhaul link channel quality parameter in the collaboration information may be: the latest measurement result of the backhaul link channel quality.
  • the downlink link channel quality parameter may be obtained by the coordinated user equipment measuring the downlink pilot transmitted by the base station, where the downlink pilot includes but is not limited to a cell reference signal CRS (Cell Reference Signal); or
  • CRS Cell Reference Signal
  • the backhaul link channel quality parameter may be obtained by the base station measuring a reference signal sent by the coordinated user equipment, where the reference signal includes, but is not limited to, a sounding reference signal (SRS).
  • SRS sounding reference signal
  • the coordinated user equipment sends a broadcast message carrying the collaboration information, including:
  • the collaborative user equipment periodically broadcasts system messages carrying the collaboration information.
  • the coordinated user equipment is triggered to broadcast a broadcast message carrying the cooperation information
  • the backhaul link threshold may be configured by a base station, and used to measure the backhaul link.
  • Channel quality when the channel quality of the backhaul link is good, the value of the channel quality parameter of the backhaul link is greater than or equal to the threshold of the backhaul link;
  • Step S802 The benefiting user equipment determines whether the channel quality of the backhaul link meets the threshold of the backhaul link, and if yes, step S803 is performed;
  • the backhaul link threshold may be configured by the base station to measure the channel quality of the backhaul link; when the channel quality of the backhaul link is good, the value of the backhaul link channel quality parameter is Greater than or equal to the backhaul link threshold;
  • Step S803 The benefit user equipment acquires the access link channel quality parameter, determines whether the access link channel quality meets the access link threshold requirement, and if yes, proceeds to step S804;
  • the access link threshold may be configured by a base station to measure channel quality of the access link; when the channel quality of the access link is good, the value of the channel quality parameter of the access link Greater than or equal to the access link threshold;
  • the access link channel quality parameter is obtained by the benefit user equipment by measuring a cell reference signal CRS (Cell Reference Signal) sent by the coordinated user equipment;
  • CRS Cell Reference Signal
  • the cooperative user equipment sends a CRS in a designated subframe configured by the base station;
  • Step S804 The benefit user equipment performs uplink synchronization with the cooperative user equipment, and reports the measurement result of the channel quality of the access link and the measurement result of the channel quality of the backhaul link to the cooperative user equipment;
  • Step S805 The cooperative user equipment receives the measurement result reported by the benefit user equipment and forwards the measurement result to the base station.
  • the coordinated user equipment does not perform uplink synchronization with the base station, perform uplink synchronization with the base station, and then send the measurement result to the base station;
  • Step S806 The base station determines that the cooperative user equipment is instructed to establish a cooperation set.
  • Step S901 The base station sends a broadcast message carrying the cooperation information, and the benefit user equipment receives the broadcast message carrying the cooperation information.
  • the collaboration information is reference information required for establishing a collaboration set, including but not limited to: a backhaul link channel quality parameter and an ID of the collaborative user equipment; the collaboration information can be the collaboration set Establish a priori information.
  • the backhaul link channel quality parameter in the collaboration information may be: the latest measurement result of the backhaul link channel quality.
  • the channel quality parameter of the backhaul link is obtained by the base station measuring an uplink reference signal sent by the coordinated user equipment, where the uplink reference signal includes, but is not limited to, a sounding reference signal (SRS); or
  • the backhaul link channel quality parameter is obtained by the base station by using a channel quality indicator CQI (Channel Quality Indicator) reported by the coordinated user equipment.
  • CQI Channel Quality Indicator
  • Step S902 The benefiting user equipment determines whether the channel quality of the backhaul link meets the threshold of the backhaul link, and if yes, step S903 is performed;
  • the backhaul link threshold may be configured by the base station to measure the channel quality of the backhaul link; when the channel quality of the backhaul link is good, the value of the backhaul link channel quality parameter is Greater than or equal to the backhaul link threshold;
  • Step S903 The benefit user equipment acquires the access link channel quality parameter, determines whether the access link channel quality meets the access link threshold requirement, and if yes, proceeds to step S904;
  • the access link threshold may be configured by a base station to measure channel quality of the access link; when the channel quality of the access link is good, the value of the channel quality parameter of the access link Greater than or equal to the access link threshold;
  • the access link channel quality parameter is obtained by the benefit user equipment by measuring a cell reference signal CRS (Cell Reference Signal) sent by the coordinated user equipment;
  • CRS Cell Reference Signal
  • the cooperative user equipment sends a CRS in a designated subframe configured by the base station;
  • Step S904 The benefit user equipment reports the measurement result of the access link channel quality and the measurement result of the backhaul link channel quality to the base station;
  • Step S905 The base station determines that the collaborative user equipment is instructed to establish a collaboration set.
  • the base station determines the received measurement result, and sends a collaboration indication to the coordinated user equipment, instructing the coordinated user equipment to establish a collaboration set.
  • the method and apparatus for establishing a collaboration set provided by the foregoing embodiment carry the collaboration information that can be used to establish a priori information for the collaboration set in the broadcast message sent by the benefit user equipment, thereby reducing the delay of establishing the cooperation set.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. Instructions to achieve their corresponding functions. This application is not limited to any specific combination of hardware and software.
  • the coordinated user equipment acquires channel quality information of the backhaul link between the base station and the coordinated user equipment, and broadcasts a broadcast message carrying the cooperation information to the benefit user equipment.
  • Embodiments of the present invention are capable of reducing the delay of cooperation set establishment.

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  • 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 d'établissement d'un ensemble coopératif. Le procédé d'établissement d'un ensemble coopératif, applicable dans un équipement d'utilisateur coopératif, consiste à : acquérir des informations de qualité de canal d'une liaison de raccordement entre une station de base et un équipement d'utilisateur coopératif ; envoyer à un équipement d'utilisateur bénéficiaire un message de diffusion contenant des informations de coopération, la liaison de raccordement étant une liaison de communication entre l'équipement d'utilisateur coopératif et la station de base, et les informations de coopération comprenant les informations de qualité de canal de la liaison de raccordement.
PCT/CN2017/071292 2016-01-15 2017-01-16 Procédé et dispositif d'établissement d'ensemble coopératif WO2017121406A1 (fr)

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CN201610027854.8A CN106982083A (zh) 2016-01-15 2016-01-15 一种协作集建立的方法和装置

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WO2019090722A1 (fr) * 2017-11-10 2019-05-16 北京小米移动软件有限公司 Procédé et appareil d'établissement de liaison terrestre, et station de base
US11483747B2 (en) 2018-04-23 2022-10-25 Beijing Xiaomi Mobile Software Co., Ltd. Methods of restoring wireless backhaul link and establishing wireless backhaul link, NR wireless backhaul base station, and NR donor base station
CN112566277B (zh) * 2019-09-25 2023-01-31 成都鼎桥通信技术有限公司 数据回传方法及装置

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