PSSCH Preparation Timing for Faster Sidelink Resource Allocation
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Solution Overview
Problem
Existing wireless communication systems face challenges in reducing the time required for sidelink preparation procedures, which can impact the efficiency of sidelink communications.
Innovation Solution
The proposed solution involves initiating a physical sidelink shared channel (PSSCH) preparation procedure prior to receiving a resource allocation, and utilizing a buffer status report (BSR) to determine a transport block size (TBS) for optimizing resource allocation in sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the PSSCH preparation procedure is initiated after receiving resource allocation, then the procedure can be properly configured with accurate resource parameters, but the preparation time is increased, reducing communication efficiency
Solution Approach 1:
The UE initiates the PSSCH preparation procedure before receiving the resource allocation from the network entity. By performing preparation actions in advance (such as buffer status reporting and transport block size determination), the UE reduces the overall preparation time while ensuring that accurate resource parameters are received and applied when they become available.
2Productivity
If resource allocation is optimized based on accurate TBS information, then resource utilization efficiency is improved, but the time to obtain and process BSR information is increased
Solution Approach 1:
The UE determines the transport block size (TBS) and reports buffer status information to the network entity before receiving the resource allocation. This preliminary determination of TBS based on buffer status allows the network entity to perform optimized resource allocation without delaying the overall process, as the critical sizing information is already available.
Solution Approach 2:
The UE provides feedback to the network entity through buffer status reports (BSR) indicating the TBS required for sidelink communication. This feedback mechanism enables the network entity to make informed resource allocation decisions that optimize resource utilization while maintaining efficient timing, as the network has accurate information about the UE's buffer requirements.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a resource allocation associated with a sidelink communication. The UE may initiate a physical sidelink shared channel preparation procedure associated with the sidelink communication prior to receiving the resource allocation associated with the sidelink communication. Numerous other aspects are described.