Sidelink Resource Sharing for LTE-NR Co-Channel Coexistence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is no solution for sharing and utilizing resource selection information between LTE SL and NR SL modules for co-channel coexistence, as they separately perform resource selections at their own physical and MAC layers.
Innovation Solution
A communication apparatus and method that enables sharing of resource selection information between LTE SL and NR SL modules through transceivers, allowing modules to select resources based on information received from each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LTE SL and NR SL modules separately perform resource selections at their own physical and MAC layers, then each module can independently optimize its resource selection, but resource conflicts and interference occur between the two modules on the same channel
Solution Approach 1:
The patent introduces a resource selection information sharing mechanism as an intermediary between LTE SL and NR SL modules. The sharing module collects resource selection information from one module and provides it to the other module, enabling coordinated resource selection without direct interference. This mediator approach allows both modules to maintain their independence while avoiding conflicts through information exchange.
2Reliability
If resource selection information is shared between LTE SL and NR SL modules, then resource conflicts are reduced, but system complexity increases due to additional information exchange mechanisms
Solution Approach 1:
The patent merges the resource selection information sharing functionality into the existing physical layer and MAC layer structures of both LTE SL and NR SL modules. By combining the sharing mechanism with existing layers rather than adding completely separate systems, the patent reduces overall system complexity while maintaining the ability to share critical resource selection information for improved coexistence.
3Productivity
If LTE SL and NR SL use the same time-frequency resources, then spectral efficiency is maximized, but co-channel interference degrades communication performance
Solution Approach 1:
The patent implements preliminary action by having modules exchange resource selection information before actually selecting and using resources. The sharing module receives resource selection information from one module and provides it to the other module in advance, allowing both modules to perform resource selection with knowledge of the other's intentions. This preliminary information exchange enables spectral efficiency through resource reuse while preventing interference through coordinated selection.
Data Source
AI summary
The present disclosure provides a communication apparatus and a communication method for sidelink co-channel coexistence resource selection information sharing, the communication apparatus comprising: a first module, which, in operation, is configured to select a list of first resources from a first plurality of candidate resources based on information relating to one or more resources of a second plurality of candidate resources received from a second module: and a transceiver, which, in operation, transmits to and/or receive from another communication apparatus a signal in one of the list of first resources.