JP7227268B2 - 超信頼性低レイテンシ通信（ｕｒｌｌｃ）のための改善された物理ダウンリンク制御チャネル（ｐｄｃｃｈ）信頼性 - Google Patents

超信頼性低レイテンシ通信（ｕｒｌｌｃ）のための改善された物理ダウンリンク制御チャネル（ｐｄｃｃｈ）信頼性 Download PDF

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JP7227268B2
JP7227268B2 JP2020550109A JP2020550109A JP7227268B2 JP 7227268 B2 JP7227268 B2 JP 7227268B2 JP 2020550109 A JP2020550109 A JP 2020550109A JP 2020550109 A JP2020550109 A JP 2020550109A JP 7227268 B2 JP7227268 B2 JP 7227268B2
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repetition
pdcch
transmission
cce
actions
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JP2021518696A (ja
JP2021518696A5 (enExample
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ホッセイニ、サイードキアヌーシュ
チェン、ワンシ
ガール、ピーター
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Qualcomm Inc
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Qualcomm Inc
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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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H04L1/0018—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement based on latency requirement
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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
    • 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
    • H04L1/187—Details of sliding window 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • 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
    • H04L1/1893—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
JP2020550109A 2018-03-19 2019-03-19 超信頼性低レイテンシ通信（ｕｒｌｌｃ）のための改善された物理ダウンリンク制御チャネル（ｐｄｃｃｈ）信頼性 Active JP7227268B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201862644994P 2018-03-19 2018-03-19
US62/644,994 2018-03-19
US16/356,095 US20190289478A1 (en) 2018-03-19 2019-03-18 Physical downlink control channel (pdcch) reliability for ultra-reliability low latency communication (urllc)
US16/356,095 2019-03-18
PCT/US2019/022957 WO2019183085A1 (en) 2018-03-19 2019-03-19 Improved physical downlink control channel (pdcch) reliability for ultra-reliability low latency communication (urllc)

Publications (3)

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JP2021518696A JP2021518696A (ja) 2021-08-02
JP2021518696A5 JP2021518696A5 (enExample) 2022-03-03
JP7227268B2 true JP7227268B2 (ja) 2023-02-21

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EP (1) EP3769456B1 (enExample)
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KR (1) KR102755396B1 (enExample)
CN (1) CN111886826B (enExample)
AU (1) AU2019239842B2 (enExample)
BR (1) BR112020018784A2 (enExample)
SG (1) SG11202007472UA (enExample)
TW (1) TWI805718B (enExample)
WO (1) WO2019183085A1 (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3769573A4 (en) * 2018-03-23 2022-01-05 Telefonaktiebolaget Lm Ericsson (Publ) METHODS AND DEVICES FOR PDCCH MONITORING
WO2019209017A1 (ko) 2018-04-23 2019-10-31 엘지전자 주식회사 무선 통신 시스템에서 물리 하향링크 공유 채널을 송수신하기 위한 방법 및 이를 지원하는 장치
EP3841834B1 (en) 2018-08-23 2025-05-07 British Telecommunications public limited company Cellular telecommunications network
WO2020057952A1 (en) 2018-09-21 2020-03-26 British Telecommunications Public Limited Company Cellular telecommunications network
GB201815377D0 (en) * 2018-09-21 2018-11-07 British Telecomm Cellular telecommunications network
CN112804753A (zh) * 2019-11-14 2021-05-14 大唐移动通信设备有限公司 信道传输方法及装置
EP3905827A1 (en) * 2020-04-29 2021-11-03 Nokia Technologies Oy User equipment and base station
US12526075B2 (en) * 2020-05-14 2026-01-13 Qualcomm Incorporated Delay parameter determination for control message repetition
US11595931B2 (en) * 2020-07-07 2023-02-28 Qualcomm Incorporated Apparatus and methods for target user equipment recommendation for sidelink-assisted positioning
US12349148B2 (en) * 2020-11-06 2025-07-01 Electronics And Telecommunications Research Institute Method and apparatus for operating frame in factory automation system
WO2022150944A1 (en) * 2021-01-12 2022-07-21 Qualcomm Incorporated Blind decoding limit techniques for wireless communications
WO2022151345A1 (zh) * 2021-01-15 2022-07-21 华为技术有限公司 Pdcch重复传输的配置方法及相关装置
CN113395083B (zh) * 2021-06-24 2022-12-16 国网河北省电力公司信息通信分公司 一种基于5g网络的配网自动毫秒级低时延设备
WO2023011190A1 (en) * 2021-08-06 2023-02-09 Mediatek Singapore Pte. Ltd. Method and apparatus for autonomous reliability enhancements in mobile communications
CN116684045A (zh) * 2022-02-21 2023-09-01 大唐移动通信设备有限公司 一种信息处理方法、装置及可读存储介质
US12355841B2 (en) * 2022-04-19 2025-07-08 Qualcomm Incorporated Adaptation for extended reality transmissions
FR3142861B1 (fr) * 2022-12-01 2025-07-18 Commissariat Energie Atomique Procédé et dispositif de communication dans un réseau de communication sans fil
US20240195533A1 (en) * 2022-12-12 2024-06-13 GM Global Technology Operations LLC Optimization of vehicle communications employing retransmission request protocol

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017538371A (ja) 2014-11-06 2017-12-21 インテル アイピー コーポレイション Ｍｔｃのための繰り返し送信の早期の終了

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9036564B2 (en) * 2008-03-28 2015-05-19 Qualcomm Incorporated Dynamic assignment of ACK resource in a wireless communication system
WO2013017154A1 (en) * 2011-07-29 2013-02-07 Fujitsu Limited Control channel for wireless communication
CN104067640B (zh) * 2012-01-30 2019-03-19 华为技术有限公司 用于通信系统中的公共控制信道的系统和方法
EP2635082A1 (en) * 2012-02-29 2013-09-04 Panasonic Corporation Dynamic subframe bundling
US9635644B2 (en) * 2012-08-10 2017-04-25 Qualcomm Incorporated Downlink coverage enhancements
KR102096927B1 (ko) * 2012-09-04 2020-04-06 삼성전자주식회사 제어 채널 엘리먼트들에 대한 어그리게이션 레벨들 개수 조정 장치 및 방법
CN109327822B (zh) * 2012-10-05 2022-10-25 交互数字专利控股公司 增强机器类型通信（mtc）设备覆盖的方法和装置
US9144066B2 (en) * 2012-12-28 2015-09-22 Sierra Wireless, Inc. Method and system for hybrid automatic repeat request combining on an lte downlink control channel
US20150085796A1 (en) * 2013-09-20 2015-03-26 Qualcomm Incorporated Flexible operation of enhanced tti-bundling modes in lte
JP6368028B2 (ja) * 2014-03-28 2018-08-01 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． ダウンリンク制御チャネルの繰り返し回数を決定するための方法および装置
US20160050667A1 (en) * 2014-08-18 2016-02-18 Samsung Electronics Co., Ltd. Communication on licensed and unlicensed bands
US11057921B2 (en) * 2014-10-01 2021-07-06 Samsung Electronics Co., Ltd. System and method for improving spectral efficiency and coverage for user equipments
US11140713B2 (en) * 2014-12-10 2021-10-05 Telefonaktiebolaget Lm Ericsson (Publ) Preemptive retransmissions on Listen-Before-Talk cells
US10314070B2 (en) * 2015-01-23 2019-06-04 Lg Electronics Inc. Method of transmitting/receiving signal in wireless communication system supporting machine type communication and device therefor
CN112073166B (zh) * 2015-01-28 2023-10-13 交互数字专利控股公司 Wtru及其实施的方法
EP3372032B1 (en) * 2015-11-04 2020-09-30 Convida Wireless, LLC Communications device, infrastructure equipment, communications system and methods
US11070344B2 (en) * 2016-01-13 2021-07-20 Lg Electronics Inc. Method and user equipment for receiving downlink channel, and method and base station for transmitting downlink channel
WO2018110961A1 (ko) * 2016-12-15 2018-06-21 엘지전자 주식회사 다중 집합 레벨에 따라 하향링크 제어 정보를 디코딩하는 방법 및 단말
US10958384B2 (en) * 2017-01-15 2021-03-23 Lg Electronics Inc. Method for transmitting HARQ-ACK signal in wireless communication system, and apparatus therefor
US11838933B2 (en) * 2017-03-17 2023-12-05 Ntt Docomo, Inc. User terminal and radio communication method
EP3626009B1 (en) * 2017-06-15 2024-01-10 Huawei Technologies Co., Ltd. Method and devices for multiple transmit receive point cooperation for reliable communication
WO2019011332A1 (en) * 2017-07-14 2019-01-17 Cheng Yu Hsin HIGH RELIABILITY ULTRA-RELIABLE LATENCY COMMUNICATION TRANSMISSION SYSTEMS AND METHODS
KR102573235B1 (ko) * 2017-08-11 2023-09-01 한국전자통신연구원 하향링크 제어 채널의 송수신 방법 및 이를 이용하는 장치
US10779174B2 (en) * 2017-08-11 2020-09-15 Lenovo (Singapore) Pte. Ltd. Method and apparatus for monitoring control candidates based on assignments of data packets with different reliabilities
US20190081835A1 (en) * 2017-09-12 2019-03-14 Mediatek Inc. Utilization Of SRS For RPD Calibration In Wireless Communications
JP7305551B2 (ja) * 2017-11-29 2023-07-10 株式会社Ｎｔｔドコモ 端末、無線通信方法、基地局及びシステム
EP3629503B1 (en) * 2017-12-08 2022-11-02 LG Electronics Inc. Method for transmitting or receiving signal in wireless communication system and apparatus therefor
EP3738237A1 (en) * 2018-01-10 2020-11-18 IDAC Holdings, Inc. Methods for identifying resources of a new radio physical downlink control channel which have been preempted by ultra-reliable low latency communication
JP2021510969A (ja) * 2018-01-11 2021-04-30 ノキア テクノロジーズ オサケユイチア ブラインド探索を管理するための装置および方法
WO2019141805A1 (en) * 2018-01-19 2019-07-25 Telefonaktiebolaget Lm Ericsson (Publ) Beta offset management for urllc uci
CN111713039A (zh) * 2018-02-13 2020-09-25 夏普株式会社 用于下行链路半持久调度的用户设备、基站和方法
US11096043B2 (en) * 2018-02-16 2021-08-17 Apple Inc. Downlink control information format for ultra-reliable physical downlink control channel
US10912071B2 (en) * 2018-02-16 2021-02-02 Apple Inc. Reliability mechanisms for physical downlink control channel (PDCCH) transmissions in new radio (NR) systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017538371A (ja) 2014-11-06 2017-12-21 インテル アイピー コーポレイション Ｍｔｃのための繰り返し送信の早期の終了

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LG Electronics，Discussion on PDCCH repetition for URLLC，3GPP TSG RAN WG1 Meeting #92 R1-1802227，2018年02月16日，pp.1-4
vivo，Discussion on PDCCH repetition for URLLC，3GPP TSG RAN WG1 Meeting #92 R1-1801549，2018年02月15日，pp.1-6

Also Published As

Publication number Publication date
EP3769456A1 (en) 2021-01-27
CN111886826A (zh) 2020-11-03
TW201941636A (zh) 2019-10-16
TWI805718B (zh) 2023-06-21
KR20200130827A (ko) 2020-11-20
AU2019239842A1 (en) 2020-09-03
CN111886826B (zh) 2023-05-30
SG11202007472UA (en) 2020-10-29
JP2021518696A (ja) 2021-08-02
US20190289478A1 (en) 2019-09-19
EP3769456B1 (en) 2022-07-20
AU2019239842B2 (en) 2023-11-23
BR112020018784A2 (pt) 2020-10-13
WO2019183085A1 (en) 2019-09-26
KR102755396B1 (ko) 2025-01-15

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