Distributed CLI Training for Aggressor-Victim UE Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in managing cross-link interference (CLI) between user equipment (UE) devices, particularly when uplink transmissions from one UE interfere with downlink receptions at another UE, leading to degraded performance.
Innovation Solution
Implementing distributed aggressor and victim UE determination through CLI measurement and reporting training sessions, where UEs transmit and measure cross-link interference reference signals, generating feedback information on Received Reference Signal Power (RSRP) or Received Signal Strength Indicator (RSSI) to identify and manage CLI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distributed CLI measurement and reporting training sessions are implemented among UEs, then CLI identification accuracy is improved, but system complexity and overhead increase
Solution Approach 1:
The system divides CLI measurement and reporting into separate training sessions: CLI measurement training sessions where UEs measure CLI reference signals, and CLI reporting training sessions where UEs report measurements to the network. This segmentation allows independent optimization of each function and reduces overall system complexity.
Solution Approach 2:
The network entity (base station) acts as an intermediary that coordinates CLI measurement and reporting training sessions, configures CLI reference signal resources, and processes CLI feedback information. This centralized coordination simplifies the distributed UE measurements by providing a central point of control.
2Reliability
If multiple CLI measurement and reporting training session iterations are performed, then CLI management accuracy is improved, but time consumption and signaling overhead increase
Solution Approach 1:
The system performs CLI measurement and reporting training sessions in periodic iterations, allowing the network to adapt to changing interference conditions over time. Each iteration refines CLI identification and management, with the network entity configuring subsequent iterations based on previous results.
Solution Approach 2:
The network entity pre-configures CLI reference signal resources and measurement parameters before CLI measurement training sessions begin. This preliminary configuration reduces signaling overhead during actual measurements and enables UEs to perform measurements efficiently without repeated configuration exchanges.
3Object-affected harmful factors
If UEs transmit CLI feedback information including RSRP or RSSI measurements, then CLI mitigation effectiveness is improved, but uplink signaling overhead increases
Solution Approach 1:
The system configures different CLI reference signal resources and measurement requirements for different UEs based on their specific interference situations. Each UE measures and reports CLI feedback information tailored to its local interference conditions, allowing targeted CLI mitigation without requiring all UEs to report all possible measurements.
Solution Approach 2:
The network entity configures CLI reference signal parameters such as periodicity, frequency resources, and power levels according to specific CLI scenarios. By adjusting these parameters, the system optimizes the balance between measurement accuracy and uplink signaling overhead for different deployment conditions.
Data Source
AI summary
Systems and techniques are provided for performing wireless communications. In some aspects, a use equipment (UE) may receive a crosslink interference (CLI) training session configuration from a network entity, wherein the CLI training session configuration corresponds to a CLI training session for a plurality of UEs including the UE. The UE may determine a CLI feedback information associated with performing the CLI training session and may transmit the CLI feedback information to the network entity. The CLI feedback information may be indicative of CLI between the UE and one or more additional UEs.