Inter-UE Resource Allocation via Unused Resource Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in enhancing the reliability and reducing the latency of UE communications, particularly in resource selection and allocation procedures for sidelink communications.
Innovation Solution
The method involves reporting a set of unused resources from a first transceiver to a second transceiver in a NR sidelink mode 2, where resources are scheduled autonomously. The second transceiver determines a set of candidate resources from the reported set and performs a sidelink transmission using selected resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If autonomous resource scheduling is used in NR sidelink mode 2, then device complexity and autonomy are improved, but resource allocation efficiency and reliability deteriorate due to lack of coordination between UEs
Solution Approach 1:
UE-A performs sensing of sidelink resources and provides feedback information to UE-B about the sensed resources. This feedback mechanism enables UE-B to make informed resource selection decisions, improving resource allocation reliability while maintaining autonomous operation. The sensing and feedback process allows UEs to coordinate resource usage without centralized control.
Solution Approach 2:
The patent introduces an intermediary feedback mechanism where UE-A acts as a mediator that senses resources and communicates resource quality information to UE-B. This intermediary information exchange enables indirect coordination between UEs, resolving the reliability issue without requiring direct UE-UE communication or network intervention.
2Loss of time
If autonomous resource selection is implemented, then latency is reduced due to direct UE-to-UE communication, but resource conflicts and interference increase
Solution Approach 1:
UE-A performs sensing of sidelink resources in advance before UE-B makes its resource selection. This preliminary sensing action identifies suitable resources and potential conflicts beforehand, allowing UE-B to select resources that minimize interference. The advance sensing prevents resource conflicts rather than resolving them after they occur.
Solution Approach 2:
The sensing feedback from UE-A to UE-B provides real-time information about resource availability and quality. This feedback enables UE-B to select resources with minimal interference, reducing harmful effects while maintaining the low-latency benefit of autonomous selection.
3Device complexity
If UEs operate independently in sidelink mode 2, then system complexity is reduced, but resource utilization efficiency decreases
Solution Approach 1:
UE-A autonomously performs sensing of sidelink resources and generates feedback information for UE-B without external intervention. This self-service capability allows distributed UEs to improve resource utilization through mutual information sharing while maintaining operational independence and avoiding complex centralized control systems.
Data Source
AI summary
Embodiments provide a method for sharing unused resources between at least two transceivers of a wireless communication system, at least a second transceiver of the at least two transceivers operating in a sidelink in-coverage, out of coverage or partial coverage scenario, in which resources for a sidelink communication over a sidelink are pre-configured by the wireless communication system or scheduled autonomously by the second transceiver, the method having: reporting, by a first transceiver of the at least two transceivers, a set of unused resources of the first transceiver to the second transceiver, determining, by the second transceiver, a set of candidate resources out of the resources of the sidelink, the set of candidate resources comprising at least a part of the unused resources of the first transceiver, performing, by the second transceiver, a sidelink transmission using selected resources selected out of the set of candidate resources.