Sidelink Resource Allocation with Periodic Sensing Occasions
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing sidelink resource allocation and sensing to reduce power consumption and improve efficiency in direct wireless device communications.
Innovation Solution
Implementing techniques for determining sidelink resource pools, sensing occasions, and selecting candidate resources based on reservation periods and coordination messages to enhance sidelink sensing and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous sensing and monitoring of sidelink resources is performed to ensure reliable resource allocation, then resource allocation reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic sensing occasions at specific intervals (e.g., every 10ms, 20ms, or 40ms) rather than continuous monitoring. The wireless device determines sensing occasions based on reservation periods and performs resource pool sensing only at these periodic intervals, reducing power consumption while maintaining reliable resource allocation through regular monitoring
Solution Approach 2:
The patent performs preliminary sensing and resource selection in advance before actual data transmission. The device determines candidate resources, selects resources from the candidate set, and prepares transmission parameters beforehand, allowing the device to enter low-power states during idle periods while ensuring resources are ready when needed
2Productivity
If comprehensive sensing of all sidelink resources is performed to optimize resource selection, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the sidelink resource pool into multiple resource sets or groups and divides the sensing process accordingly. The device determines candidate resources from segmented portions of the resource pool rather than processing all resources simultaneously, reducing computational complexity while maintaining allocation efficiency through systematic resource evaluation
Solution Approach 2:
The patent implements partial sensing by evaluating only a subset of resources that are most likely to be suitable for transmission. The device determines candidate resources based on partial sensing of the resource pool and selects from this candidate set, avoiding the need to comprehensively evaluate every resource while still achieving efficient allocation
3Productivity
If coordination messages are exchanged between multiple wireless devices to improve resource allocation coordination, then resource utilization is improved, but communication overhead increases
Solution Approach 1:
The patent introduces coordination messages as intermediaries that carry resource allocation information between wireless devices. These messages convey sensed resource pool information, candidate resource sets, or resource selection parameters, enabling devices to coordinate resource usage and improve utilization without requiring extensive direct communication between all device pairs
Data Source
AI summary
Techniques for power savings by a wireless device. The technique including determining, by a first wireless device, a sidelink resources pool including a set of sidelink resources for communicating directly with a second wireless device; determining one or more reservation periods associated with resources of the sidelink resources pool; determining a number of sensing occasions based on the one or more reservation periods; sensing a wireless medium within the sidelink resources pool based on the determined number of sensing occasions and the determined one or more reservation periods; selecting a set of candidate resources from the sidelink resources pool based on the sensing; and transmitting data to the second wireless device based on the selected set of candidate resources.