Sidelink Resource Availability Communication Without Legacy Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in communicating sidelink resource availability without interference from legacy user equipment (UE).
Innovation Solution
A method and apparatus for a user equipment (UE) to identify and exchange sidelink resource availability information using specific resources not allocated to legacy UEs, ensuring priority and avoiding interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource availability information is communicated using legacy allocated resources, then compatibility with existing systems is maintained, but interference from legacy UEs occurs and communication reliability deteriorates
Solution Approach 1:
The resource pool is segmented into two distinct parts: resources allocated to legacy UEs and resources allocated to non-legacy UEs for sidelink resource availability communication. This segmentation ensures that non-legacy UEs can exchange resource availability information without legacy UE interference while maintaining compatibility with legacy systems that continue to use their originally allocated resources.
Solution Approach 2:
The patent extracts the resource availability communication function from the legacy resource pool and creates a dedicated resource pool specifically for this purpose. By taking out the resource availability information exchange from the general resource pool used by legacy UEs, the system eliminates interference while preserving legacy system operation.
2Reliability
If dedicated resources are allocated for sidelink resource availability communication, then interference from legacy UEs is avoided, but system complexity increases
Solution Approach 1:
The resource pool is divided into legacy-allocated resources and non-legacy-allocated resources, with clear demarcation through higher-layer signaling. This segmentation approach provides dedicated resources for sidelink resource availability communication while maintaining a structured and manageable resource allocation framework that does not excessively increase system complexity.
Solution Approach 2:
The dedicated resources allocated for sidelink resource availability communication serve multiple functions: they enable resource availability information exchange, support both unicast and groupcast communications, and maintain backward compatibility. This multi-functionality reduces the need for additional separate mechanisms, thereby limiting the increase in system complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may identify a set of resources for exchanging, with a second UE, resource availability information associated with a sidelink channel. The set of resources are not allocated to a legacy UE. Accordingly, the first UE may exchange, with the second UE and using the set of resources, the resource availability information associated with the sidelink channel. Alternatively, the legacy UE may receive, from the second UE, a communication on a sidelink channel and determine that the communication is associated with resource availability information for the sidelink channel Accordingly, the first UE may discard the communication based at least in part on the communication being associated with resource availability information for the sidelink channel. Numerous other aspects are provided.