Sidelink Resource Selection via Peer Coordination Feedback
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Solution Overview
Problem
The existing resource allocation mode in New Radio (NR) SideLink technology lacks an effective enhancement scheme for terminal-based sidelink resource selection, relying on base station scheduling or autonomous terminal selection without efficient peer terminal coordination.
Innovation Solution
The method involves a terminal requesting and receiving sidelink resource selection information from a peer terminal through multiple transmissions of request and coordination information, allowing for adaptive resource selection based on provided information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal performs autonomous resource selection based on channel sensing, then resource allocation flexibility is improved, but resource selection accuracy deteriorates due to lack of peer terminal coordination information
Solution Approach 1:
The patent implements a feedback mechanism where terminals exchange coordination information including preferred and non-preferred resource indicators through SCI messages. This feedback loop allows terminals to adjust their resource selections based on peer terminal preferences, thereby improving resource selection accuracy while maintaining autonomous selection flexibility
Solution Approach 2:
The patent introduces coordination information as an intermediary element that mediates between autonomous resource selection and peer terminal preferences. The coordination information including preferred resource indicators and non-preferred resource indicators acts as a mediator to guide resource selection without requiring base station intervention, thus improving accuracy while preserving autonomy
2Ease of operation
If terminal randomly selects resource from resource set, then resource selection simplicity is improved, but transmission reliability deteriorates due to potential interference
Solution Approach 1:
The patent applies preliminary action by having terminals pre-indicate their preferred resources and non-preferred resources before actual data transmission. This advance coordination allows other terminals to avoid selecting conflicting resources, thereby improving transmission reliability while maintaining the simplicity of random selection from the resource set
Solution Approach 2:
The patent implements preliminary anti-action by having terminals proactively indicate non-preferred resources to prevent potential interference before it occurs. Other terminals use this information to avoid selecting the indicated non-preferred resources, thus preventing interference in advance while keeping the resource selection process simple
3Reliability
If base station schedules sidelink resources, then resource allocation reliability is improved, but system complexity and signaling overhead increase
Solution Approach 1:
The patent implements self-service by enabling terminals to autonomously perform resource selection with coordination information exchange between peers. Terminals independently determine their transmission resources based on exchanged coordination information without requiring base station scheduling, thereby reducing system complexity and signaling overhead while maintaining reliable resource allocation through peer-to-peer coordination
Data Source
AI summary
An information transmission method, a terminal, and a non-transitory computer-readable storage medium are provided. The information transmission method includes: transmitting, by a first terminal, request information or coordination information for one or more times. The request information is used to request a second terminal to feed back the coordination information, and the coordination information is used to provide sidelink resource selection information for the second terminal.