Sidelink Resource Reselection After Consistent LBT Failure
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Solution Overview
Problem
Existing wireless communication systems lack a method for processing sidelink consistent listen-before-talk failures, which occur due to resource contention in unlicensed bands, leading to communication disruptions.
Innovation Solution
A method and apparatus for processing sidelink consistent listen-before-talk failures by determining the failure and performing operations such as clearing grant resources, selecting or reselecting resources, performing resource pool reselection, or canceling the failure, based on configuration information and time periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If listen-before-talk procedure is implemented in unlicensed bands to ensure fair resource usage, then resource contention is managed, but consistent LBT failures occur leading to communication disruptions
Solution Approach 1:
The network device pre-configures the terminal with a target time period and operational instructions before LBT failures occur. When consistent LBT failures are detected, the terminal executes the pre-planned operations (clearing grant resources, resource selection, or resource pool reselection) within the configured time period, enabling rapid response without complex real-time decision-making
Solution Approach 2:
The system dynamically adjusts resource allocation strategies based on LBT failure detection. The terminal can transition between different operational states (normal operation, clearing grant resources, resource selection, resource pool reselection) based on the detected failure conditions and the configured time period, making the resource management adaptive to changing channel conditions
2Productivity
If comprehensive resource management operations are performed after LBT failure detection, then resource utilization is optimized, but system complexity increases
Solution Approach 1:
The network device provides pre-configured instructions specifying which operations to perform (clearing grant resources, resource selection, or resource pool reselection) and the target time period for execution. This pre-configuration simplifies the terminal's processing burden during actual LBT failure events, as the decision logic is already established
Solution Approach 2:
The resource management process is divided into distinct operational stages: detection of consistent LBT failures, execution of pre-configured operations within the target time period, and resumption of normal operation. This segmentation allows the system to handle complex resource management through a structured, step-by-step approach rather than requiring simultaneous complex decisions
Data Source
AI summary
Disclosed in the present application are a method and apparatus for processing a sidelink consistent listen-before-talk failure, and a terminal. The method includes: a terminal determining that a sidelink consistent listen-before-talk failure is triggered on a target resource; and the terminal executing a first operation, wherein the first operation includes at least one of the following: clearing a first sidelink licensed resource, which includes the target resource on which the sidelink consistent listen-before-talk failure is triggered; executing resource selection or re-selection for the first sidelink licensed resource; performing resource pool re-selection; and canceling a sidelink consistent listen-before-talk failure which has been triggered, but has not been canceled on the target resource.