NR Resource Exclusion for LTE Control Channel Coexistence
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Solution Overview
Problem
In LTE/NR co-channel coexistence scenarios, NR sidelink transmissions may not sense LTE transmissions, leading to resource conflicts and reduced communication reliability due to overlapping resource usage by LTE and NR sidelink.
Innovation Solution
A method for resource exclusion where the NR module determines a resource selection window and excludes candidate resources that overlap with reserved resources for LTE control information transmission, using RSRP measurement values adjusted for power differences and priority considerations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If NR modules select resources from a shared resource pool in LTE/NR co-channel coexistence scenarios, then resource utilization efficiency is improved, but resource conflicts occur because NR modules cannot sense LTE transmissions
Solution Approach 1:
The NR module performs preliminary exclusion of LTE reserved resources (PSCCH resources) from the candidate resource set before resource selection. By proactively removing resources that would conflict with LTE control information transmission, the system prevents resource conflicts before they occur, thereby maintaining both high resource utilization and communication reliability
Solution Approach 2:
The patent introduces an intermediary mechanism where the NR module uses information about LTE reserved resources (obtained through sensing or indication) to filter the candidate resource set. This intermediary filtering process acts as a mediator between NR resource selection and LTE transmissions, preventing direct conflict while allowing both systems to operate in the shared resource pool
2Use of energy by moving object
If NR sidelink transmissions use the same resources as LTE sidelink transmissions, then spectrum efficiency is improved, but transmission conflicts arise due to lack of sensing capability
Solution Approach 1:
The patent extracts and removes LTE reserved resources (specifically PSCCH resources used for control information transmission) from the NR candidate resource set. By taking out these specific resources that would cause conflicts with LTE control channels, the system allows NR data transmissions to share the spectrum with LTE data transmissions while avoiding harmful interference with LTE control information
Data Source
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AI summary
The present application discloses a method for resources exclusion and a related apparatus. The present application relates to communication, and may be applied to a terminal device including a first communication module and a second communication module. The method includes: determining, by a first communication module of the terminal device, a resource selection window according to a time unit triggering resource selection; and excluding, by the first communication module of the terminal device, a first candidate resource from a candidate resource set corresponding to the resource selection window, wherein the first candidate resource overlaps with a first reserved resource, the first reserved resource being a resource for transmitting control information of a radio access network RAN technology supported by the second communication module. The embodiments of the present application may be employed to avoid resource conflicts and improve communication reliability.