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A channel access monitoring method and terminal equipment

A technology for channel access and terminal equipment, which is used in wireless communication, error prevention/detection using return channels, digital transmission systems, etc. It can solve the problems of high equipment overhead, inability to determine the trigger time of resource reselection, and reduce collisions. , the effect of reducing equipment overhead and improving transmission efficiency

Active Publication Date: 2021-08-10
CHINA ACADEMY OF INFORMATION & COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a channel access monitoring method and terminal equipment, which solves the problems that the existing methods and equipment cannot determine the triggering time of resource reselection and the equipment overhead introduced by resource reselection is large

Method used

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  • A channel access monitoring method and terminal equipment
  • A channel access monitoring method and terminal equipment
  • A channel access monitoring method and terminal equipment

Examples

Experimental program
Comparison scheme
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no. 1 Embodiment

[0025] figure 1 It is an embodiment of the channel access listening sequence in the prior art, and introduces the channel access listening sequence in the prior art.

[0026] Assuming that the originating UE needs to transmit data, the time when the resource selection is triggered, that is, the resource selection time is n, and when channel access is initiated using the channel detection method, the channel detection window corresponding to the time n is [n-T0, n-Tproc0 ], the resource selection window corresponding to time n is [n+T1, n+T2], that is, to select the time window [n+T1, n+T2] based on the channel monitoring results of the time window [n-T0, n-Tproc0] ], and continue to listen to the channel after n until the data is sent.

[0027] In the present invention, Tproc0 is the first trigger processing delay, which is the minimum time for triggering resource selection at time n when the originating UE detects that the resource selection condition is satisfied within the...

no. 2 Embodiment

[0033] figure 2 It is a first embodiment of a channel access listening sequence including resource reselection time, and describes a method for determining a resource reselection trigger time, specifically:

[0034] [n, m-T3] When one or more resource reselection conditions are met within the time window, the corresponding resource reselection trigger time is m-T3, where n is assumed to be the current resource selection or reselection Trigger time, m is the selected resource transmission time corresponding to the n time, that is, the resource transmission time selected in the resource selection time window corresponding to the n time, T3 is the third time parameter, when the originating UE triggers the processing at the m time delay.

[0035]The resource reselection condition may be that the selected transmission resources at time m are occupied by other devices, and the resource interference corresponding to the measurement is higher than a certain threshold; or that the tr...

no. 3 Embodiment

[0041] image 3 It is a second embodiment of a channel access listening sequence including a resource reselection time sequence, and describes a method for determining a resource reselection trigger time, specifically:

[0042] [n, min(n+W, m-T3)] The resource reselection condition is met one or more times detected within the time window, and the corresponding first resource reselection trigger time is min(n+W, m-T3 ).

[0043] Wherein, W is a preset resource reselection interval, assuming that n is the current resource selection or reselection trigger time, m is the resource sending time selected in the resource selection time window corresponding to time n, and T3 is the third processing delay Time.

[0044] The resource reselection condition is met one or more times as described in Embodiment 2.

[0045] In the third embodiment of the present invention, a resource reselection trigger time window is configured, that is, the resource reselection interval W, and resource re...

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Abstract

The invention discloses a channel access monitoring method and terminal equipment, which solves the problems that the existing methods and equipment cannot solve the problem of determining the triggering time of resource reselection and the equipment overhead introduced by resource reselection. The method includes: determining the latest resource reselection trigger time g after the current time n, and the determination method of the latest resource reselection trigger time is at least one of the following: (1) continue channel monitoring after n until Satisfy the resource reselection condition at time x; (2) continue channel monitoring after n, and the latest resource reselection trigger time g is m-T3; (3) continue channel monitoring after n until at time min(n +W, m-T3) or min(n+W, m-T3)-Tproc0 when it is judged that the channel listening result satisfies the resource reselection condition, the latest resource reselection trigger time g is min(n+W, m -T3). The terminal device uses the method. The present invention can be used for channel detection and access of communication between 5G terminals.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a channel access monitoring method and terminal equipment. Background technique [0002] In 5G Internet of Vehicles communication, when a sending terminal (sending UE) needs to send data to one or more receiving terminals (receiving UEs), the corresponding transmission resources can be selected through channel monitoring to carry the corresponding Sidelink control information (SCI, Sidelink control information) and associated sidelink data channel (PSSCH). In the existing channel access monitoring method, when the originating UE needs to perform data transmission, the originating UE continuously monitors the channel state until the data is sent; if it detects that the resource for data transmission is occupied, it needs to perform resource reselection. However, there is no corresponding solution for how to determine the trigger moment of resource reselection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04L1/18
CPCH04L1/1812H04W74/0808
Inventor 沈霞
Owner CHINA ACADEMY OF INFORMATION & COMM
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