Co-Channel Sidelink Resource Preemption for LTE-NR Collision Avoidance
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Solution Overview
Problem
Existing technologies fail to effectively manage resource collisions and ensure high-priority service transmission between Long Term Evolution (LTE) and New Radio (NR) sidelink (SL) transmissions when they coexist on the same channel, necessitating a solution to minimize collisions and maintain system performance.
Innovation Solution
A method and apparatus for preempting co-channel SL resources by performing a resource allocation procedure based on information from both LTE and NR radio access modules to determine a resource set, followed by preempting resources that meet specific conditions to reduce collisions, ensuring high-priority service transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NR SL and LTE SL transmissions coexist on the same channel without resource preemption, then both systems can operate independently, but resource collisions occur between LTE SL and NR SL transmissions degrading system performance
Solution Approach 1:
The patent performs resource preemption in advance by determining a first resource set for NR SL transmission and comparing it with a second resource set for LTE SL transmission before actual transmission occurs. This preliminary action identifies and resolves potential resource collisions before they degrade system performance, ensuring reliable transmission for both systems.
Solution Approach 2:
The patent applies preliminary anti-action by preempting LTE SL resources that would collide with high-priority NR SL transmissions. By identifying overlapping resources in advance and preventing LTE SL from using those resources, the system counteracts the harmful effect of resource collisions before they can occur, thereby protecting NR SL transmission reliability.
2Productivity
If resource preemption is implemented between LTE SL and NR SL, then resource collisions are reduced, but system complexity increases due to coordination requirements
Solution Approach 1:
The terminal device performs resource preemption autonomously by internally determining both the first resource set (for NR SL) and the second resource set (for LTE SL), comparing them to identify collisions, and preempting conflicting resources without requiring complex inter-system coordination. This self-service approach reduces resource collisions while minimizing the increase in system complexity.
Solution Approach 2:
The patent merges the resource management functions of LTE SL and NR SL into a unified resource preemption mechanism within the terminal device. By combining the determination and comparison of resource sets from both systems into a single coordinated process, the patent improves resource utilization efficiency while managing complexity through integration rather than separate coordination procedures.
Data Source
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AI summary
The present application provides a method and apparatus for preempting co-channel sidelink (SL) resources, and a storage medium. The method comprises: executing a resource allocation procedure according to first information of a first radio access module of a first terminal and second information of a second radio access module of a first terminal, and determining a first resource set; and preempting resources on the basis of the first resource set and a second resource set, the second resource set is determined according to resources currently occupied or granted for transmission of the first radio access module of the first terminal.