WO2017118142A1 - Procédé et dispositif de communication sur une bande de fréquence sans licence - Google Patents

Procédé et dispositif de communication sur une bande de fréquence sans licence Download PDF

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Publication number
WO2017118142A1
WO2017118142A1 PCT/CN2016/102473 CN2016102473W WO2017118142A1 WO 2017118142 A1 WO2017118142 A1 WO 2017118142A1 CN 2016102473 W CN2016102473 W CN 2016102473W WO 2017118142 A1 WO2017118142 A1 WO 2017118142A1
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WO
WIPO (PCT)
Prior art keywords
unlicensed carrier
uplink
user equipment
lbt
downlink
Prior art date
Application number
PCT/CN2016/102473
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English (en)
Chinese (zh)
Inventor
刘壮
Original Assignee
中兴通讯股份有限公司
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Publication date
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Publication of WO2017118142A1 publication Critical patent/WO2017118142A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the base station and the user equipment establish a data service carried on the unlicensed carrier
  • the present disclosure also proposes a device for communicating on an unlicensed frequency band, which is applied to a base station, including the industry.
  • a module, a congestion decision module, and a parameter adjustment module wherein:
  • the present disclosure also proposes a non-transitory computer readable storage medium storing computer executable instructions for performing the above described method of communicating over an unlicensed carrier.
  • FIG. 8 is a block diagram showing a system for performing communication on an unlicensed frequency band according to a fifth embodiment of the present disclosure
  • the base station When the base station sends the downlink data to the user equipment, the base station initiates the downlink LBT on the unlicensed carrier to compete for the unlicensed carrier resource, and when the downlink LBT successfully contends to the unlicensed carrier resource, the downlink data is sent to the user equipment through the unlicensed carrier;
  • the base station counts at least one of the number of downlink LBTs initiated before successfully competing for the unlicensed carrier resources to transmit the downlink data and the time taken to initiate the downlink LBT before successfully competing for the unlicensed carrier resources for transmitting the downlink data, and
  • the statistic result performs layer 3 filtering; when at least one of the number of downlink LBTs initiated and the time taken to initiate the downlink LBT exceeds a threshold, the base station determines that the unlicensed carrier generates contention congestion, when the number of downlink LBTs initiated and the downlink LBT are initiated. When the threshold is not exceeded, it is determined that the unlicensed carrier does not generate competing congestion. This process of downlink data transmission over an un
  • the base station increases the maximum number of retransmissions of the HARQ or increases the timing length of the RLC retransmission polling timer.
  • NumLBT DLFailure The number of LBT failures before the EUTRAN initiates the downlink LBT and successfully competes to the unlicensed carrier due to the transmission of the downlink data. In other words, it is the downlink LBT initiated by the EUTRAN before successfully competing for the unlicensed carrier resources for transmitting the downlink data. frequency.
  • the LBT DLTime is the time required for the EUTRAN to initiate the downlink LBT and successfully compete for the unlicensed carrier due to the transmission of the downlink data.
  • the HysLBT DLTime is the hysteresis parameter of the set time statistic of the downlink LBT successfully competing for the resource
  • LBT DLTime Thresh is the threshold (ie, the maximum threshold parameter) of the time statistic required for the downlink LBT to successfully compete for resources.
  • the EUTRAN may consider any one or two of the congestion decision conditions 1 and 2 according to the Quality of Service (QoS). For example, when the congestion judgment condition 1 is satisfied, the competition is judged to be generated; or when the congestion judgment condition 2 is satisfied, the competition is generated; or when the congestion judgment conditions 1 and 2 are simultaneously satisfied, the competition is judged. congestion.
  • QoS Quality of Service
  • the EUTRAN establishes a data service with the UE that is carried by the unlicensed carrier.
  • LBT ULTime is the time required for the UE to initiate the uplink LBT and successfully compete for the unlicensed carrier due to the transmission of the uplink data. In other words, it is the cost of the UE to initiate the downlink LBT before successfully competing for the unlicensed carrier resource for transmitting the downlink data. time.
  • the measurement parameters may also be configured in the RRC Connection Setup establishment process when the data service is established in step S31. Similar.
  • the EUTRAN may receive the N1 event of the NumLBT ULFailure measurement value or the A1 event of the LBT ULTime measurement value reported by the UE according to the service QOS requirement, or receive the NumLBT ULFailure and the LBT ULTime simultaneously in a time period.
  • the A1 event of the measured value is reported, it is determined that the UE generates competing congestion when transmitting the uplink data through the unlicensed carrier.
  • the EUTRAN establishes a data service carried by the UE with an unlicensed carrier.
  • LBT ULTime is the time required for the UE to initiate the uplink LBT and successfully compete for the unlicensed carrier due to the transmission of the uplink data. In other words, it is the cost of the UE to initiate the downlink LBT before successfully competing for the unlicensed carrier resource for transmitting the downlink data. time.
  • RRC Connection is initiated separately as in step S42 of the present embodiment.
  • the Reconfiguration reconfiguration process is used to configure the measurement parameters.
  • the measurement parameters may also be configured during the establishment of the RRC Connection Setup when the data service is established in step S41. The two processes are similar.
  • the EUTRAN sends an uplink scheduling command to the UE by using an unlicensed carrier.
  • the UE measures at least one of the NumLBT ULFailure and the LBT ULTime according to the measured parameters configured in step S42, and performs layer three filtering on the measurement result.
  • EUTRAN pair with At least one of the statistics is performed, and the statistical result is subjected to layer three filtering. among them:
  • Step S48 may also be performed simultaneously with step S44, or before any of steps S45-S47 or simultaneously with any of the steps.
  • the UE reports a periodic measurement report to the EUTRAN.
  • the maximum number of uplink HARQ retransmissions on the current UE side is an initial value.
  • the initial value of the service establishment is generally 4).
  • the timing length of the RLC retransmission polling timer is the initial value of the service establishment.
  • the EUTRAN sends an RRC Connection Reconfiguration message to the UE, and the MAC-MainConfig cell is carried in the message to notify the UE to configure the maximum number of HARQ retransmissions of the uplink service as Or by notifying the UE in the message that the RLC-Config cell (for the uplink AM RLC mode) adjusts the timing length of the RLC timer of the uplink service to Therefore, the competition tolerance of the unlicensed carrier is increased to a certain extent, the data loss is reduced, and data retransmission is generated in the HARQ layer as much as possible to avoid unnecessary retransmission of the RLC layer.
  • the EUTRAN decides that the congestion cancellation is performed on the unlicensed carrier set of the UE downlink data bearer.
  • step S42 may be omitted, but in the uplink scheduling command sent by the EUTRAN to the UE through the unlicensed carrier, the UE is required to perform measurement in step S44. And at least one of the LBT ULTimes .
  • the method for communicating on an unlicensed carrier of the present disclosure by performing a contention congestion judgment on an unlicensed carrier, when detecting that the unlicensed carrier of the service bearer has certain contention congestion, appropriately increasing the maximum number of retransmissions of the HARQ or extending the retransmission of the RLC
  • the polling timer enables the retransmission to adopt the fast retransmission of the HARQ as much as possible, and enhances the tolerance of the RLC retransmission, thereby avoiding excessive unnecessary retransmission of the RLC layer caused by not acquiring the unlicensed carrier resources in time.
  • the problem of HARQ and RLC retransmission generated when communicating on an unlicensed frequency band is solved, the user delay is reduced, and the data transmission efficiency is improved.
  • the system includes a base station 100 and a user equipment 200.
  • the base station 100 may be an EUTRAN, and the user equipment 200 may be a mobile phone or a tablet.
  • Such as mobile terminals can also be other terminal devices.
  • At least one of the time and layer 3 filtering of the statistical result when at least one of the number of downlink LBTs initiated and the time taken to initiate the downlink LBT exceeds a threshold, the base station 100 determines that the unlicensed carrier generates contention congestion. When the number of downlink LBTs initiated and the time taken to initiate the downlink LBT does not exceed the threshold, it is determined that the unlicensed carrier does not generate contention congestion.
  • the user equipment 200 when at least one of the number of uplink LBTs initiated and the time taken to initiate the uplink LBT exceeds a threshold, the user equipment 200 is required to be sent to the base station.
  • the user equipment 200 is required to report the second event to the base station 100; the user equipment 200 configures the measurement parameter according to the measurement control.
  • the first event is reported by the user equipment 200 when the number of the uplink LBTs and the time taken to initiate the uplink LBT are not exceeded. At this time, the measurement report reported by the user equipment 200 reports the event information.
  • the initial parameters of the HARQ or RLC are restored.
  • the maximum number of retransmissions of the restored HARQ is an initial value, or the timing length of the LC retransmission polling timer is restored to an initial value.
  • the congestion decision module 120 is configured to determine whether the unlicensed carrier generates contention congestion during data transmission between the base station and the user equipment.
  • the logic instructions in the memory 113 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the technical solution of the present disclosure may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in various embodiments of the present disclosure.

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

Abstract

Procédé et dispositif de communication sur une bande de fréquence sans licence. Le procédé comporte les étapes suivantes: une station de base établit un service de données porté sur une porteuse sans licence avec un équipement d'utilisateur; tandis que la station de base réalise une transmission de données avec l'équipement d'utilisateur, la station de base détermine si un encombrement par concurrence est généré sur la porteuse sans licence; et lorsqu'un encombrement par concurrence est généré sur la porteuse sans licence, la station de base ajoute le nombre maximal de réémissions d'une demande de répétition automatique hybride (HARQ) ou augmente la longueur de minutage d'une temporisation de scrutation de réémission RLC.
PCT/CN2016/102473 2016-01-04 2016-10-18 Procédé et dispositif de communication sur une bande de fréquence sans licence WO2017118142A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610003950.9 2016-01-04
CN201610003950.9A CN106941397B (zh) 2016-01-04 2016-01-04 在非授权频段上通信的方法和装置

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KR20170043608A (ko) * 2014-09-24 2017-04-21 후아웨이 테크놀러지 컴퍼니 리미티드 타이머의 길이 조절 방법 및 기지국
WO2020153610A1 (fr) * 2019-01-24 2020-07-30 엘지전자 주식회사 Procédé pour transmettre et recevoir en liaison montante dans une bande sans licence, et dispositif associé

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CN109906660B (zh) * 2017-07-17 2021-03-23 华为技术有限公司 数据传输方法、网络设备及终端设备
CN109391374B (zh) * 2017-08-03 2020-08-28 维沃移动通信有限公司 一种数据传输方法、数据检测方法及装置
WO2019095113A1 (fr) * 2017-11-14 2019-05-23 Oppo广东移动通信有限公司 Procédé, dispositif terminal et dispositif réseau pour retransmission de données
WO2019127148A1 (fr) * 2017-12-27 2019-07-04 Oppo广东移动通信有限公司 Procédé et dispositif de transmission d'informations, et support de stockage informatique
CN110475343A (zh) 2018-05-10 2019-11-19 索尼公司 电子装置、无线通信方法和计算机可读介质
CN111615146B (zh) * 2019-06-28 2023-01-10 维沃移动通信有限公司 处理方法及设备
CN111615147B (zh) * 2019-06-28 2022-05-03 维沃移动通信有限公司 配置方法及终端设备
CN112291842A (zh) * 2019-07-22 2021-01-29 华为技术有限公司 一种通信方法及装置
CN110418370B (zh) * 2019-09-12 2021-08-31 展讯通信（上海）有限公司 一种非授权频段的测量方法、终端、网元及存储介质

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WO2020153610A1 (fr) * 2019-01-24 2020-07-30 엘지전자 주식회사 Procédé pour transmettre et recevoir en liaison montante dans une bande sans licence, et dispositif associé
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CN106941397B (zh) 2020-04-24
CN106941397A (zh) 2017-07-11

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