Sidelink Resource State Feedback for Unlicensed Band Utilization
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Solution Overview
Problem
Current SideLink (SL) transmission frameworks are primarily designed for licensed frequency bands and struggle with efficient resource utilization in unlicensed frequency bands, leading to resource wastage due to inadequate communication between user equipment and control nodes regarding resource availability.
Innovation Solution
The method involves determining state information about sidelink resources on unlicensed frequency bands and sending this information to control nodes or target terminals, ensuring both parties are aware of resource availability, thereby improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user equipment performs channel access sensing on unlicensed frequency bands independently, then user equipment can attempt to initiate transmission when resources appear idle, but control nodes cannot obtain real-time resource state information leading to resource scheduling inefficiency and waste
Solution Approach 1:
The patent implements a feedback mechanism where user equipment sends resource state information to control nodes. Specifically, the terminal determines whether a sidelink resource is idle or occupied through sensing, then feeds back this state information to the control node. This enables the control node to make informed scheduling decisions, resolving the information asymmetry between user equipment and control nodes in unlicensed frequency band operations.
2Productivity
If control nodes schedule resources for user equipment without real-time sensing information, then scheduling simplicity is maintained, but resource preemption fails and resource waste occurs
Solution Approach 1:
The patent applies preliminary action by having user equipment perform resource sensing and determine resource state information before transmission. The terminal senses the sidelink resource in advance, determines whether it is idle or occupied, and prepares this information for feedback. This preliminary determination enables effective resource preemption while maintaining simple control node scheduling operations.
3Ease of operation
If user equipment operates autonomously on unlicensed bands without informing control nodes, then operational independence is achieved, but resource coordination fails leading to conflicts and inefficiency
Solution Approach 1:
The patent implements self-service by enabling user equipment to autonomously sense and determine the state of sidelink resources on unlicensed frequency bands. The terminal independently performs channel access sensing and resource state determination without requiring control node intervention for each sensing operation. This maintains operational independence while the subsequent feedback ensures coordination reliability.
Data Source
AI summary
An information transmission method and apparatus, and a storage medium, are provided. The information transmission method includes: determining, by a terminal, state information corresponding to a sidelink resource on an unlicensed frequency band; and sending, by the terminal, the state information to a target node, where the target node includes a control node or a target terminal.