Sidelink Control Channel Coordination for Inter-UE Resource Allocation
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Solution Overview
Problem
Current mobile communication systems face challenges in efficiently managing sidelink resource allocation between user equipment, particularly in inter-UE scenarios, leading to interference and suboptimal sensing performance due to the lack of standardized mechanisms for PSCCH and PSSCH transmission.
Innovation Solution
A method where a first user equipment (UE) receives resource allocation from a second UE, with the second UE optionally transmitting the 1st stage SCI on behalf of the first UE, allowing for optimized PSCCH and PSSCH transmission to avoid interference and improve sensing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a first UE performs autonomous resource selection for sidelink transmission, then resource allocation flexibility is improved, but interference management and sensing performance deteriorate due to lack of coordination with other UEs
Solution Approach 1:
The patent introduces a second UE as an intermediary that performs sensing on behalf of the first UE and reports resources to it. This mediator approach allows the first UE to benefit from coordinated resource allocation without performing autonomous sensing, thus improving interference management while maintaining allocation flexibility.
Solution Approach 2:
The second UE autonomously performs sensing and resource selection operations, serving itself and the first UE simultaneously. This self-service mechanism reduces the burden on the first UE while ensuring proper interference management through dedicated sensing operations.
2Measurement precision
If a first UE performs full sensing procedure for sidelink resource allocation, then sensing performance is improved, but power consumption and processing complexity increase
Solution Approach 1:
Instead of requiring the first UE to perform complete sensing procedures, the patent implements a mechanism where only the second UE performs full sensing. The first UE receives partial information (resource recommendations) without executing the complete sensing action, thus achieving adequate sensing performance with reduced power consumption.
Solution Approach 2:
The second UE acts as an intermediary sensing entity that performs the power-intensive sensing operations and shares results with the first UE. This distributes the sensing burden and allows the first UE to achieve good sensing performance without bearing the full power consumption cost.
3Extent of automation
If inter-UE resource allocation is implemented without standardized PSCCH transmission mechanisms, then device autonomy is improved, but communication reliability and resource allocation efficiency deteriorate due to interference
Solution Approach 1:
The patent introduces a standardized mechanism where a second UE serves as an intermediary that performs sensing and communicates resource allocation information to the first UE via PSCCH. This standardized intermediary approach maintains device autonomy while ensuring reliable communication through coordinated resource allocation and proper PSCCH transmission protocols.
Data Source
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AI summary
Systems, methods, apparatuses, and computer program products for physical sidelink transmission for sidelink inter-user equipment resource allocation. A method may include receiving at a first user equipment based on a decision of a second user equipment, a resource allocation from the second user equipment. The method may also include determining whether to transmit a sidelink control information associated to a transmission using the resource allocation over a control channel. The method may further include performing a transmission using the resource allocation.