Sidelink Resource Allocation for UE Leaving Network Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in requesting and allocating sidelink resources for communications outside of a network service region, leading to disruptions in sidelink communications.
Innovation Solution
A user equipment (UE) predicts when it will leave a network service region and transmits assistance information to receive an allocation of sidelink resources before exiting the region, ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE requests sidelink resources only when currently inside a network service region, then the resource allocation process is simple, but sidelink communications are disrupted when the UE moves outside the network service region
Solution Approach 1:
The UE performs preliminary actions by requesting and receiving sidelink resource allocations while still inside the network service region, before actually moving outside. The network node allocates resources in advance based on the UE's movement prediction, so that when the UE exits the service region, resources are already available and communication continuity is maintained without requiring complex real-time allocation mechanisms outside the region
2Productivity
If the network node allocates sidelink resources dynamically when the UE is outside the network service region, then resource utilization is optimized, but communication disruptions occur due to lack of network coverage
Solution Approach 1:
The network node performs preliminary resource allocation while the UE is still within network coverage, storing the allocation for later use. This allows the UE to immediately access pre-allocated resources upon exiting the service region, maintaining communication reliability without requiring complex dynamic allocation mechanisms outside network coverage
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit assistance information while the UE is located in a network service region and based at least in part on a prediction that the UE will leave the network service region. The UE may receive, based at least in part on the assistance information, an allocation of a set of sidelink resources. Numerous other aspects are provided.