Sidelink Resource Selection Using Coordinated Time-Frequency Sets
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Solution Overview
Problem
In the 5G New Radio Vehicle-to-Everything (NR V2X) system, terminals face challenges in determining time-frequency resources for Sidelink communication to avoid resource collisions, particularly in resource allocation mode 2 where terminals self-select resources without comprehensive conflict information from other terminals.
Innovation Solution
A method where a first terminal transmits coordination information to a second terminal, including preferred, non-preferred, and conflicting resource sets, using RSRP information and priority indicators to assist in resource selection, facilitated through SCI, DCI, or RRC signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals self-select resources in resource allocation mode 2, then resource selection flexibility is improved, but resource collision probability increases
Solution Approach 1:
The patent implements feedback mechanisms where terminals send resource selection information to the network device, which then provides coordination information back to terminals. This closed-loop feedback enables terminals to adjust their resource selection based on actual resource usage status, reducing collisions while maintaining self-selection flexibility.
Solution Approach 2:
The network device acts as an intermediary that collects resource selection information from multiple terminals and generates coordination information. This intermediary facilitates resource coordination between terminals without requiring direct terminal-to-terminal communication, resolving the contradiction between autonomous selection and collision avoidance.
2Speed
If terminals perform resource exclusion based on own sensing results, then resource selection speed is improved, but resource coordination completeness deteriorates
Solution Approach 1:
The patent employs preliminary action by having terminals report their resource selection intentions to the network device before actual resource usage. The network device then pre-coordinates resource allocation by providing coordination information that indicates preferred, non-preferred, and conflicting resource sets, allowing terminals to make informed decisions without exhaustive sensing.
Solution Approach 2:
The network device serves as an intermediary that aggregates resource selection information from multiple terminals and provides comprehensive coordination information. This intermediary compensates for the limited sensing capability of individual terminals, ensuring complete resource coordination while maintaining fast resource selection.
Data Source
AI summary
An information processing method, an information processing device and a readable storage medium are provided. The information processing method includes transmitting, by a first terminal, first coordination information to a second terminal. The first coordination information is used by the second terminal to perform resource selection in accordance with the first coordination information, the first coordination information includes time-frequency resource indication information of at least one of a first resource set, a second resource set or a third resource set, the first resource set is a set of resources preferred to be used by the second terminal for Sidelink communication, the second resource set is a set of resources non-preferred to be used by the second terminal for the Sidelink communication, and the third resource set is a set of resources where there is a resource conflict.