WO2021108817A3 - Methods and apparatus for channel sensing for beamformed transmissions - Google Patents

Methods and apparatus for channel sensing for beamformed transmissions Download PDF

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Publication number
WO2021108817A3
WO2021108817A3 PCT/US2021/026458 US2021026458W WO2021108817A3 WO 2021108817 A3 WO2021108817 A3 WO 2021108817A3 US 2021026458 W US2021026458 W US 2021026458W WO 2021108817 A3 WO2021108817 A3 WO 2021108817A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensing
methods
transmitting device
channel sensing
channel
Prior art date
Application number
PCT/US2021/026458
Other languages
French (fr)
Other versions
WO2021108817A2 (en
Inventor
Weimin Xiao
George Calcev
Qian CHENG
Jialing Liu
Original Assignee
Futurewei Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Futurewei Technologies, Inc. filed Critical Futurewei Technologies, Inc.
Publication of WO2021108817A2 publication Critical patent/WO2021108817A2/en
Publication of WO2021108817A3 publication Critical patent/WO2021108817A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection

Landscapes

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

Abstract

A method implemented by a transmitting device includes sensing, by the transmitting device during a sensing slot using a sensing beam, an availability of a channel for performing at least one transmission using at least one transmit beam; determining, by the transmitting device, a sensing threshold in accordance with the sensing beam and the at least one transmit beam; and determining, by the transmitting device, that the channel is idle in accordance with the sensing threshold, and based thereon, transmitting, by the transmitting device, on the channel using the at least one transmit beam.
PCT/US2021/026458 2020-05-22 2021-04-08 Methods and apparatus for channel sensing for beamformed transmissions WO2021108817A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063029035P 2020-05-22 2020-05-22
US63/029,035 2020-05-22

Publications (2)

Publication Number Publication Date
WO2021108817A2 WO2021108817A2 (en) 2021-06-03
WO2021108817A3 true WO2021108817A3 (en) 2021-09-02

Family

ID=75747108

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2021/026458 WO2021108817A2 (en) 2020-05-22 2021-04-08 Methods and apparatus for channel sensing for beamformed transmissions

Country Status (1)

Country Link
WO (1) WO2021108817A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11672011B2 (en) * 2021-04-02 2023-06-06 Qualcomm Incorporated Eligible transmission beams based on directional listen-before-talk
WO2023050133A1 (en) * 2021-09-29 2023-04-06 北京小米移动软件有限公司 Method and apparatus for using unlicensed channel, device, and storage medium
WO2023050454A1 (en) * 2021-10-02 2023-04-06 Huizhou Tcl Cloud Internet Corporation Technology Co., Ltd User equipment, base station, and methods for ed threshold configuration for cot sharing
WO2023076397A1 (en) * 2021-10-27 2023-05-04 Apple Inc. Sensing beam determination in unlicensed spectrum
CN113727388B (en) * 2021-11-01 2022-01-18 广东省新一代通信与网络创新研究院 Channel using method and system based on directional monitoring
CN114391238A (en) * 2021-12-08 2022-04-22 北京小米移动软件有限公司 Communication method, device, equipment and readable storage medium
WO2023203538A1 (en) * 2022-04-21 2023-10-26 Lenovo (Singapore) Pte. Ltd. Method and apparatus for determining a sensing beam associated with a plurality of communication target devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019099530A1 (en) * 2017-11-20 2019-05-23 Qualcomm Incorporated Adaptive medium sensing thresholds
WO2019160741A1 (en) * 2018-02-14 2019-08-22 Idac Holdings, Inc. Methods, apparatus, and system using multiple antenna techniques for new radio (nr) operations in unlicensed bands

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019099530A1 (en) * 2017-11-20 2019-05-23 Qualcomm Incorporated Adaptive medium sensing thresholds
WO2019160741A1 (en) * 2018-02-14 2019-08-22 Idac Holdings, Inc. Methods, apparatus, and system using multiple antenna techniques for new radio (nr) operations in unlicensed bands

Also Published As

Publication number Publication date
WO2021108817A2 (en) 2021-06-03

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