Sensing Signal Transmission via Listen Before Talk Resource Allocation
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Solution Overview
Problem
In the sensing system, interference occurs when sensing signals are sent in unlicensed frequency bands due to the lack of mutual coordination among sensing devices.
Innovation Solution
A method executed by user equipment (UE) to determine the characteristic of a sensing service, identify an unoccupied sensing resource, and send the sensing signal based on that resource, ensuring the resource is not occupied by other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing signals are sent in unlicensed frequency bands without coordination, then the sensing system can operate flexibly, but interference occurs due to lack of mutual coordination among sensing devices
Solution Approach 1:
The patent applies preliminary action by performing LBT (Listen Before Talk) checks before transmitting sensing signals. The UE detects whether the channel is occupied by other devices prior to sending the sensing signal, and only transmits when the channel is clear. This advance detection and preparation prevents interference before it occurs, resolving the contradiction between flexible unlicensed band operation and interference avoidance.
2Speed
If sensing signals are sent without checking resource occupancy, then transmission speed is fast, but the success rate of sending sensing signals decreases due to interference
Solution Approach 1:
The patent implements feedback through the LBT mechanism where the UE continuously monitors the channel occupancy status and adjusts its transmission behavior accordingly. The system receives feedback about channel availability from the environment and uses this information to decide whether to transmit. This feedback loop ensures that sensing signals are only sent when the channel is unoccupied, maintaining both transmission speed and success rate by avoiding collisions.
Data Source
AI summary
A method for sending a sensing signal includes: determining a characteristic of a sensing service; determining, based on the characteristic of the sensing service, an unoccupied first sensing resource in sensing resources to be allocated; and sending the sensing signal based on the first sensing resource.