Sidelink Feedback Bundling for Multi-Grant Resource Efficiency
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing sidelink feedback messaging, particularly in scenarios involving multi-stage grants, multi-packet grants, and relaying communications, leading to excessive utilization of network resources.
Innovation Solution
Implementing a sidelink feedback format that consolidates multiple acknowledgements into a single bundled feedback message, using a PSCCH format or MAC CE, to optimize resource usage and reduce network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate feedback messages are transmitted for each sidelink communication, then acknowledgment reliability is improved, but network resource utilization deteriorates
Solution Approach 1:
The patent combines multiple separate feedback messages into a single bundled feedback message that contains multiple acknowledgments. This merging approach maintains the reliability of individual acknowledgments while reducing the total number of feedback transmissions, thereby optimizing network resource utilization and reducing energy consumption in sidelink communications.
2Measurement precision
If individual feedback messages are sent for each grant or data packet, then feedback accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple individual feedback messages into a single bundled feedback message that contains multiple acknowledgments. This approach maintains feedback accuracy by including all necessary acknowledgments while reducing the complexity of managing and transmitting multiple separate feedback messages, thereby optimizing device resource usage.
3Reliability
If separate feedback messages are transmitted for multi-stage grants and multi-packet grants, then communication reliability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies feedback bundling to multi-stage grants and multi-packet grants by consolidating multiple acknowledgments into a single feedback message. This maintains communication reliability by ensuring all necessary acknowledgments are transmitted while improving resource allocation efficiency by reducing the number of feedback transmissions and freeing up network resources.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive at least one sidelink communication on a sidelink, wherein the at least one sidelink communication includes at least one of a grant, data received on a resource identified by a grant, a multi-stage grant, a multi-packet grant, or a relaying communication; and transmit, on the sidelink or an uplink, a feedback message including a plurality of acknowledgements in connection with receiving the at least one sidelink communication. Numerous other aspects are provided.