Sidelink Resource Feedback for Collision-Aware Wireless Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sidelink transmissions and receptions, particularly in scenarios where devices are out of coverage, leading to potential collisions and the need for reliable communication methods to support services like platooning and autonomous driving.
Innovation Solution
A device and method for sidelink transmission/reception that includes terminals capable of receiving signals, determining the need for retransmission or collision, and broadcasting frequency, time, and status information to manage resource allocation and ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If devices perform sidelink transmission without centralized coordination, then device autonomy and simplicity are improved, but transmission collisions and resource conflicts increase
Solution Approach 1:
The patent implements a feedback mechanism where receiving devices send back received signal information to transmitting devices. This feedback loop enables devices to adjust their transmission parameters autonomously based on actual reception conditions, resolving the contradiction between operational simplicity and transmission reliability.
Solution Approach 2:
The patent introduces dynamic resource allocation where devices can change transmission parameters (time, frequency, power) based on real-time conditions. This dynamic adjustment allows the system to adapt to changing environments while maintaining both autonomy and reliability without requiring centralized control.
2Productivity
If devices broadcast transmission signals without collision detection, then transmission speed and efficiency are improved, but resource waste and interference increase
Solution Approach 1:
The patent implements preliminary action by having devices detect and report received signals before initiating transmission. This advance awareness allows devices to select optimal transmission parameters that avoid collisions, ensuring efficient resource utilization while preventing energy waste from failed transmissions.
Solution Approach 2:
The patent employs parameter changes by adjusting transmission characteristics (time slot, frequency, power level) based on feedback information. This dynamic parameter adaptation optimizes transmission efficiency while minimizing energy consumption by avoiding redundant or failed transmissions.
3Device complexity
If devices operate independently in sidelink communication, then system complexity is reduced, but coordination and collision avoidance become difficult
Solution Approach 1:
The patent implements self-service by enabling devices to autonomously perform collision detection and resource allocation based on received signal information. Each device independently processes feedback and adjusts its transmission parameters, maintaining low system complexity while achieving effective coordination without centralized management.
Solution Approach 2:
The patent introduces received signal information as an intermediary element that mediates between independent devices. This intermediary feedback mechanism enables coordination and collision avoidance while preserving device independence and minimizing overall system complexity.
Data Source
AI summary
A first terminal of a wireless communication system is provided. The first terminal includes a transceiver, memory, comprising one or more storage media, storing instructions, and one or more processors communicatively coupled to the transceiver and the memory, wherein the instructions, when executed by the one or more processors individually or collectively, cause the first terminal to receive at least one of a first signal broadcasted from a second terminal or a second signal broadcasted from a third terminal, determine whether retransmission is needed or whether a collision occurs, based on at least one of the first signal or the second signal, and broadcast a third signal comprising frequency resource information, time resource information, and status information determined based on whether the retransmission is needed or whether the collision occurs.