Sidelink Feedback Reporting Period Configuration
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in sidelink communication feedback, leading to increased overhead and reduced frame structure efficiency due to unnecessary feedback reporting symbols and turnaround symbols.
Innovation Solution
A method and apparatus for wireless communication that configures the reporting period for sidelink feedback communications to occupy only a subset of slots in the frame structure, with a configurable periodicity, and to occupy the entire bandwidth of the resource pool, thereby reducing overhead and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback reporting is performed in every slot, then feedback reliability is improved, but overhead increases and frame structure efficiency deteriorates
Solution Approach 1:
The patent implements feedback reporting with configurable periodicity, where feedback is transmitted only in specific slots determined by a reporting period parameter. This periodic feedback mechanism maintains adequate feedback reliability while significantly reducing the number of feedback reporting symbols compared to every-slot reporting, thereby reducing overhead and improving frame structure efficiency.
2Loss of information
If feedback reporting symbols are allocated in every slot, then feedback completeness is improved, but frame structure efficiency deteriorates due to unused symbols
Solution Approach 1:
The patent introduces a reporting period configuration that determines which slots contain feedback reporting symbols. By spacing feedback reporting slots periodically rather than allocating them in every slot, the system maintains feedback completeness for critical communications while eliminating unused feedback symbols in non-reporting slots, thereby improving frame structure efficiency and resource utilization.
3Reliability
If turnaround symbols are allocated in every slot, then communication reliability is improved, but overhead increases
Solution Approach 1:
The patent configures turnaround symbols to appear periodically in specific slots rather than in every slot. This periodic allocation maintains communication reliability by providing sufficient turnaround time for UE processing in feedback reporting slots while reducing the total quantity of turnaround symbols, thereby lowering overhead and improving overall system efficiency.
4Loss of time
If feedback reporting period is shortened, then feedback timeliness is improved, but overhead increases
Solution Approach 1:
The patent implements dynamic feedback reporting period configuration, allowing the network to adjust the reporting period based on traffic conditions, channel quality, and service requirements. This dynamic adjustment enables the system to achieve timely feedback when needed while reducing overhead during periods with lower requirements, optimizing the trade-off between feedback timeliness and overhead.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a sidelink communication on a sidelink between the UE and another UE. The UE may transmit, on the sidelink, one or more feedback communications associated with the sidelink communication in a reporting period having a configurable periodicity and/or being configured to occupy an entire bandwidth of a resource pool configured for the sidelink. Numerous other aspects are provided.