Multi-Slot Resource Selection Order Under LBT Uncertainty
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Solution Overview
Problem
In communication systems using unlicensed frequency bands, the uncertainty of listen before talk (LBT) results in failed data transmission, and existing systems struggle to ensure continuous multi-slot resource selection when multiple transport blocks arrive simultaneously, impacting channel access efficiency.
Innovation Solution
A method and apparatus for continuous multi-slot resource selection that determines the order of resource selection for multiple transport blocks (TBs) arriving at a user equipment (UE) and sequentially selects resources based on this order to ensure continuous resource allocation, reducing the impact of LBT failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transport blocks arrive simultaneously and resource selection is performed without a determined order, then resource selection flexibility is maintained, but continuous multi-slot resource selection cannot be ensured
Solution Approach 1:
The patent applies preliminary action by determining the resource selection order for multiple transport blocks before actual resource selection is performed. The higher layer pre-establishes the selection sequence when multiple TBs arrive simultaneously, ensuring that subsequent resource selection can proceed in a predetermined order to achieve continuous multi-slot resource allocation.
2Reliability
If resource selection is performed sequentially for multiple TBs, then continuous resource allocation is achieved, but resource selection time increases
Solution Approach 1:
The patent resolves this contradiction by pre-determining the resource selection order in the higher layer before the actual resource selection process. This preliminary ordering allows the physical layer to efficiently select resources sequentially without time-consuming dynamic decision-making during the selection process itself, thus maintaining both reliability and minimizing time loss.
3Reliability
If LBT is performed before each transmission slot, then channel access compliance is ensured, but transmission efficiency decreases due to uncertain LBT results
Solution Approach 1:
The patent applies continuity of useful action by securing continuous multi-slot resources in advance through predetermined selection ordering. Once resources are selected for multiple consecutive slots, the transmission can proceed continuously across these slots without repeated LBT interruptions, thereby maintaining channel access compliance while significantly improving transmission efficiency through uninterrupted data flow.
Data Source
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AI summary
The present disclosure belongs to the technical field of communications. Provided are a resource selection method and apparatus for multiple consecutive slots, and a device and a storage medium. The method comprises: determining m transport blocks (TBs) which simultaneously arrive at a physical layer of a terminal device, wherein m is a positive integer greater than 1; determining a resource selection order of the m TBs; and selecting a resource for each of the m TBs in sequence according to the determined order, wherein when a resource is selected for each TB, a resource located in an adjacent slot to a resource(s) of one or more TBs present in a higher layer of the terminal device, which resource(s) has/have been selected but not used for actual transmission, is preferentially selected. In the present disclosure, a method of "resource selection for multiple consecutive slots" is provided, such that resource selection for multiple consecutive slots can be implemented according to a determined resource selection order, thereby reducing the impact of LBT failure, and improving the channel access efficiency.