Cooperative Radar Sensing Session Establishment
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Solution Overview
Problem
Current wireless communication systems lack the ability for user equipment (UE) to discover and establish cooperative radar sensing sessions with other UEs, which limits the performance of radar sensing and increases interference between nearby UEs.
Innovation Solution
The implementation of a method where a first UE transmits a discovery message to establish a cooperative radar sensing session with another UE, with the second UE sending a join request and both UEs agreeing on a joint configuration to process both monostatic and bistatic returns, enhancing radar sensing performance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UEs operate independently without cooperative sensing, then device complexity is reduced, but radar sensing performance deteriorates and interference increases
Solution Approach 1:
The system enables UEs to autonomously discover and establish cooperative radar sensing sessions through self-service mechanisms. UEs transmit discovery messages and process responses independently to form cooperative groups, with each UE managing its own session establishment without requiring network controller intervention, thus improving sensing performance while maintaining operational simplicity
Solution Approach 2:
Discovery messages serve as intermediary carriers that facilitate cooperative session establishment between UEs. These messages enable UEs to exchange capability information and establish connections without complex direct negotiations, resolving the contradiction by providing a standardized communication protocol that simplifies the interaction process
2Object-affected harmful factors
If UEs establish cooperative radar sensing sessions, then interference between nearby UEs is reduced, but communication overhead increases
Solution Approach 1:
The system merges radar sensing operations of multiple UEs into cooperative sessions where UEs share time-frequency resources and coordinate their transmissions. By combining sensing efforts, the system reduces individual UE transmission power and avoids redundant measurements, thereby reducing interference while minimizing the additional communication overhead through efficient resource sharing
Solution Approach 2:
Cooperative radar sensing sessions are established through periodic discovery message transmissions rather than continuous communication. UEs transmit discovery messages at specific intervals to maintain and update cooperative sessions, which reduces communication overhead compared to continuous signaling while still effectively managing interference through periodic coordination
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit a discovery message to discover another UE with which to establish a cooperative radar sensing session. The first UE may receive, from a second UE, a join request for the first UE to establish the cooperative radar sensing session with the second CE, The first UE may transmit, to the second UE, an acceptance indication based at least in part on the join request. The first UE may communicate with the second UE to establish a joint configuration to be used by the first UE and the second UE for the cooperative radar sensing session, Numerous other aspects are described.