Sidelink Resource Synchronization in LBE Mode to Cut Interference
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Solution Overview
Problem
Wireless communication networks face challenges in load based equipment (LBE) mode due to cross-link interference and listen before talk (LBT) failures, leading to excessive overhead.
Innovation Solution
A user equipment (UE) identifies resources for sidelink communication, allocates a subset of these resources, configures synchronization points with an offset value and period, and transmits control information to a neighboring UE to manage sidelink communication effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LBE mode is used for sidelink communication, then flexibility in resource allocation is improved, but cross-link interference and LBT failures increase
Solution Approach 1:
A synchronization point configuration is introduced as an intermediary mechanism between UEs in LBE mode. The first UE configures synchronization points with offset values and periods, which mediate the resource allocation process and enable coordinated transmissions, thereby reducing cross-link interference and LBT failures while preserving LBE flexibility
Solution Approach 2:
Synchronization points are configured in advance before actual sidelink communications occur. The offset value and period parameters are predetermined and communicated via control information, allowing UEs to pre-coordinate their resource usage patterns, which prevents interference issues rather than reacting to them
2Adaptability or versatility
If LBE mode is used for sidelink communication, then resource allocation flexibility is improved, but overhead increases
Solution Approach 1:
The resource allocation process is segmented into distinct components: synchronization point configuration, offset value parameters, and periodic patterns. This segmentation allows the system to achieve flexible resource allocation through structured, modular control elements rather than requiring extensive signaling for each resource assignment
Solution Approach 2:
The invention uses parameter changes (offset value and period) to control synchronization behavior. By varying these parameters, the system can adapt resource allocation patterns dynamically without requiring complex signaling overhead, as the parameters themselves encode the resource allocation strategy
3Object-affected harmful factors
If synchronization points are configured with offset value and period, then cross-link interference is reduced, but device complexity increases
Solution Approach 1:
Synchronization points are configured to operate periodically with defined periods and offset values. This periodic structure simplifies the interference management mechanism by creating predictable, repeating patterns rather than requiring complex adaptive algorithms, thereby reducing device complexity while effectively mitigating cross-link interference
Data Source
AI summary
Aspects of the present disclosure include methods, apparatuses, and computer readable media for identifying a plurality of resources for sidelink communication between the UE and a neighbor UE, allocating a subset of the plurality of resources for one or more sidelink channels, configuring one or more synchronization points of the subset of the plurality of resources by identifying an offset value and a period associated with the one or more synchronization points, transmitting, to the neighboring UE, control information indicating the offset value and the period, and transmitting or receiving sidelink information via at least a portion of the subset of the plurality of resources.