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Channel access method for carrying out transmission in unlicensed band, and device using same

A technology of channel access and random access response, applied in transmission systems, access restrictions, digital transmission systems, etc., can solve problems such as difficult communication quality assurance, interference, etc.

Pending Publication Date: 2021-09-24
WILUS INST OF STANDARDS & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, when an unlicensed frequency band is used for cellular communication services, it is difficult to guarantee the communication quality to the level provided in the licensed frequency band, and there is a high possibility that there will be problems with existing wireless communication devices (for example, wireless LAN devices) using the unlicensed frequency band. ) interference

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  • Channel access method for carrying out transmission in unlicensed band, and device using same
  • Channel access method for carrying out transmission in unlicensed band, and device using same
  • Channel access method for carrying out transmission in unlicensed band, and device using same

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Embodiment Construction

[0056] The terms used in the specification adopt general terms widely used at present as much as possible by considering functions in the present invention, but the terms may be changed according to intentions, habits of those skilled in the art, and appearance of new technologies. In addition, in a specific case, there are terms arbitrarily selected by the applicant, and in this case, the meaning thereof will be described in the corresponding description section of the present invention. Therefore, it is intended that the terms used in the disclosure specification should not be analyzed only based on the name of the term, but should be analyzed based on the substantial meaning of the terms and contents throughout the specification.

[0057] Throughout the specification and the following claims, when it is described that an element is "connected" to another element, the element may be "directly connected" to the other element or "electrically connected" to the other element thr...

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Abstract

Disclosed are wireless communication system base stations. Each wireless communication base station comprises a communication module and a processor. When the base stations carry out DRS- and nonunicast data-multiplexed transmission, the processors select one channel access type among two channel access types according to whether both of two conditions are satisfied, the two conditions being that the duration of the DRS- and nonunicast data-multiplexed transmission is 1 ms or less, and the duty cycle of DRS transmission is 1 / 20 or less. Among the two channel access types, the first type is channel access in which random backoff is carried out using a variable-size contention window (CW), the size of the CW being determined according to channel access priority class; and the second type is channel access in which only single time interval-based LBT is carried out.

Description

technical field [0001] The present disclosure relates to a wireless communication system. In particular, the present disclosure relates to a channel access method for including transmission of a discovery reference signal and uplink / downlink transmission in a wireless communication system operating in an unlicensed frequency band and an apparatus using the method. Background technique [0002] Following the commercialization of the fourth generation (4G) communication system, efforts are being made to develop a new fifth generation (5G) communication system in order to meet the increasing demand for wireless data services. The 5G communication system is referred to as a super 4G network communication system, a post-LTE system, or a new radio (NR) system. In order to achieve a high data transmission rate, the 5G communication system includes a system operating using a millimeter wave (mmWave) frequency band of 6 GHz or higher, and includes a communication system operating us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W74/00H04L1/18
CPCH04L1/18H04W74/0816H04W74/0808H04W74/0875H04W74/002H04L1/1812H04W72/12H04W16/14H04W48/10H04W56/001H04W72/53H04W74/08
Inventor 卢珉锡崔庚俊郭真三
Owner WILUS INST OF STANDARDS & TECH