Sidelink Resource Coordination via Triggered Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink resource reservations, leading to resource congestion and reduced reliability in device-to-device communications, particularly in scenarios with aperiodic or periodic traffic patterns.
Innovation Solution
A method where a first user equipment (UE) sends a sidelink transmission to trigger a second UE to report on resource availability, allowing for request-based reporting instead of frequent periodic reporting, thereby conserving resources and improving reliability by adapting to traffic patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequent periodic reporting is used to monitor sidelink resource availability, then resource availability information is updated frequently, but resource congestion increases and reliability decreases
Solution Approach 1:
The patent applies periodic action by implementing request-based reporting where the second UE transmits resource availability reports only when triggered by specific events (such as resource reservation changes or transmission opportunities) rather than continuously or periodically. This event-driven approach reduces reporting frequency during stable conditions while maintaining information accuracy when changes occur, thereby reducing resource congestion and improving transmission reliability.
2Measurement precision
If frequent periodic reporting is used to monitor sidelink resource availability, then resource availability is tracked accurately, but resource congestion increases
Solution Approach 1:
The patent implements periodic action through event-driven reporting mechanisms where the second UE sends resource availability information only when specific triggering events occur (such as resource reservation changes, transmission completions, or scheduled opportunities). This reduces the quantity of reporting messages significantly compared to continuous periodic reporting, thereby conserving resources while maintaining accurate resource availability tracking when needed.
Solution Approach 2:
The system applies self-service by having the second UE autonomously determine when to send resource availability reports based on local conditions and triggering events, rather than receiving continuous commands from the first UE. This autonomous event-driven approach optimizes resource consumption by sending reports only when necessary, reducing overall resource usage while maintaining measurement precision.
3Quantity of substance
If request-based reporting is used instead of frequent periodic reporting, then resource congestion is reduced, but resource availability information may be less timely
Solution Approach 1:
The patent applies feedback by implementing a request-response mechanism where the first UE sends requests for resource availability information and the second UE responds when triggered by specific events. This feedback loop ensures that information is provided timely in response to actual needs rather than continuously, reducing resource consumption while maintaining acceptable timeliness through event-driven responses.
Solution Approach 2:
The system implements preliminary action by having the second UE prepare and cache resource availability information in advance, so that when a request is received or a triggering event occurs, the information is immediately available for rapid transmission. This pre-preparation reduces the delay between information generation and transmission while maintaining low resource consumption through event-driven delivery.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for requesting inter-UE coordination messages for sidelink communications. In some cases, a method for wireless communications by a first user equipment (UE), include sending a first sidelink transmission to at least one second UE to trigger the second UE to transmit a report regarding sidelink resource availability and monitoring for a second sidelink transmission from the second UE after sending the first sidelink transmission.