Sidelink Resource Reselection Using RSRP and Priority Checks
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Solution Overview
Problem
Current methods for resource reselection in sidelink communication, particularly in the New Radio (NR) system, face challenges in efficiently managing resource selection and reselection, especially when dealing with overlapping resource pools from different communication systems, leading to potential resource collisions and reduced communication reliability.
Innovation Solution
A method and apparatus for resource reselection in terminal devices, which involves re-evaluating and reselecting resources based on sidelink control information from different communication systems, using conditions such as resource set determination, RSRP threshold checks, and priority comparisons to avoid collisions and ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices select transmission resources from a resource pool by monitoring in sidelink communication, then resource selection flexibility is improved, but resource collisions increase when resource pools from different communication systems overlap
Solution Approach 1:
The patent segments the resource pool into multiple resource sets based on different communication systems (e.g., NR and LTE). Each resource set is independently managed and monitored, allowing terminal devices to selectively access resources from appropriate sets. This segmentation prevents collisions between overlapping resource pools from different systems while maintaining flexibility in resource selection.
Solution Approach 2:
The patent implements dynamic resource reselection mechanisms where terminal devices continuously monitor resource availability and adjust their resource selection based on current system conditions. When resource conflicts are detected or channel conditions change, devices can dynamically reselect resources from alternative resource sets, ensuring both flexibility and reliability in varying communication scenarios.
2Productivity
If terminal devices monitor resources from multiple communication systems, then resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent divides the monitoring task into separate resource sets corresponding to different communication systems. Terminal devices can configure and monitor multiple resource sets independently, allowing efficient utilization of resources from both NR and LTE systems without requiring a single complex monitoring mechanism. This segmentation simplifies the overall monitoring process while improving resource utilization.
3Reliability
If resource reselection is performed based on multiple conditions (resource set, RSRP threshold, priority), then communication reliability is improved, but processing overhead increases
Solution Approach 1:
The patent performs preliminary resource set determination and condition evaluation before actual resource selection. Terminal devices pre-configured resource sets and evaluation criteria (RSRP thresholds, priority levels) based on system information and historical data. This preliminary action reduces processing time during runtime by avoiding complex real-time calculations, thus improving reliability without significant processing overhead.
Data Source
AI summary
Provided is a method for resource reselection. The method is applicable to a terminal device and includes: reselecting a first resource in a case that the first resource meets a first condition. The first condition includes at least one of the following items: the first resource is not within a first resource set, wherein the first resource set is determined based on first sidelink control information and second sidelink control information; a second resource determined based on the first resource is overlapped with a resource determined based on first sidelink control information or second sidelink control information, and a reference signal received power (RSRP) threshold condition is met; or a priority indicated by first sidelink control information or second sidelink control information is higher than a priority of data transmission and/or higher than a priority threshold. The first sidelink control information is different from the second sidelink control information.