Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CHANNEL ACCESS METHOD AND APPARTUS FOR TRANSMISSION OF A SIGNAL IN UNLICENSED SPECTRUM
Document Type and Number:
WIPO Patent Application WO/2021/000080
Kind Code:
A1
Abstract:
Embodiments of the present invention provides a method and an apparatus for channel access for the transmission of a signal. The method includes: counting down, by a first device, an initial value N of a random backoff counter within a contention window; sensing, by the first device, a channel status; determining, by the first device, whether or not to perform transmission of the signal within a periodic window based on the sensed channel status; transmitting, by the first device, the signal after sensing the channel to be idle. Therefore, the channel access method and apparatus adapt to the data and control traffic load in the channel using LBT with random back-off with a contention window of variable size.

Inventors:
MAZZARESE DAVID JEAN-MARIE (CN)
ZHANG JIAYIN (CN)
Application Number:
CN2019/093966
Publication Date:
January 07, 2021
Filing Date:
June 29, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W74/08; H04L27/26; H04W16/14; H04W72/04
Domestic Patent References:
WO2019023586A12019-01-31
Foreign References:
CN105050190A2015-11-11
CN101252510A2008-08-27
Other References:
ANONYMOUS: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on NR-based Access to Unlicensed Spectrum; (Release 16)", 3GPP STANDARD; TECHNICAL REPORT; 3GPP TR 38.889, vol. RAN WG1, no. V0.3.0, 30 November 2018 (2018-11-30), pages 1 - 109, XP051590971
ANONYMOUS: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Physical layer procedures for shared spectrum channel access (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 37.213, no. V15.2.0, 31 March 2019 (2019-03-31), pages 1 - 20, XP051722947
WI RAPPORTEUR (ERICSSON; HUAWEI): "RAN1 Agreements and Working Assumptions for Rel-13 LAA", 3GPP DRAFT; R1-156379, vol. RAN WG1, 3 November 2015 (2015-11-03), Malmö, Sweden, pages 1 - 9, XP051022038
SAMSUNG: "DRS design and LBT procedure", 3GPP DRAFT; R1-154767 DRS DESIGN AND LBT PROCEDURE, vol. RAN WG1, 28 August 2015 (2015-08-28), Beijing, China, pages 1 - 7, XP051021041
Download PDF: