Sidelink Resource Selection via Base Station Control Information
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Solution Overview
Problem
Current wireless communication systems face challenges in preventing resource collision between user equipment (UEs) operating with different sidelink transmission modes, leading to potential latency issues in signal transmission and reception.
Innovation Solution
A method where a base station transmits control information to UEs, including backoff values and candidate resource sets, to prevent resource collision, allowing UEs to select transmission resources based on this information and communicate effectively, even when they support different sidelink transmission modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UEs autonomously select transmission resources without network assistance, then device complexity and signaling overhead are reduced, but resource collision between UEs with different transmission modes increases
Solution Approach 1:
The base station acts as an intermediary by providing control information including backoff values and candidate resource sets to UEs. This mediator approach allows UEs to autonomously select resources while the network guides the selection process to prevent collisions between UEs with different transmission modes, resolving the contradiction between autonomous operation and collision prevention.
2Reliability
If the base station provides detailed control information to prevent resource collision, then resource collision prevention improves, but signaling overhead and network complexity increase
Solution Approach 1:
The control information is segmented into essential components (backoff values and candidate resource sets) that are transmitted to UEs. This segmentation allows the network to provide sufficient guidance for collision prevention while minimizing signaling overhead by only transmitting the most critical resource allocation parameters.
3Adaptability or versatility
If UEs with different sidelink transmission modes operate in the same cell, then system versatility and adaptability improve, but resource collision and latency issues worsen
Solution Approach 1:
Different backoff values and resource allocation strategies are applied locally to UEs based on their specific transmission modes. The base station provides mode-specific control information that tailors resource selection to each UE's characteristics, allowing diverse transmission modes to coexist without causing collisions or latency issues.
Data Source
AI summary
Presented in one embodiment of the present invention is a method by which a first terminal communicates with a second terminal in a wireless communication system, comprising the steps of: allowing the first terminal to receive control information from a base station; allowing the first terminal to select a transmission resource on the basis of the control information; and allowing the first terminal to communicate with a second terminal on the basis of the transmission resource, wherein the control information is transmitted to the first terminal and the second terminal by the base station, and the control information includes information for preventing a transmission resource selection collision between the first terminal and the second terminal. The first terminal is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.