CLI Reference Signal Exchange for Wireless Interference Mitigation
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing cross-link interference (CLI) between network nodes and user equipment, which affects communication quality and efficiency.
Innovation Solution
Implementing methods and apparatuses for exchanging cross-link interference (CLI) information between network nodes and user equipment (UE) to facilitate better management and configuration of communications, including receiving and transmitting CLI reports and reference signal measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless communication systems support device-to-device communication and full-duplex operations, then communication efficiency and spectral utilization are improved, but cross-link interference between network nodes and user equipment increases
Solution Approach 1:
The patent implements a feedback mechanism where user equipment measures CLI reference signals and reports CLI measurements to the network node. The network node uses this feedback information to identify interfering UEs and adjust communication parameters, creating a closed-loop system that dynamically responds to interference conditions while maintaining full-duplex operations
Solution Approach 2:
The patent changes communication parameters based on CLI measurements, including adjusting time offsets, frequency resources, and power levels for CLI reference signals and data transmissions. These parameter modifications allow the system to mitigate interference while preserving the benefits of device-to-device communication and full-duplex operations
2Use of energy by moving object
If network nodes transmit and receive signals simultaneously in full-duplex mode, then spectral efficiency is improved, but interference management complexity increases
Solution Approach 1:
The patent segments the interference management process into distinct functional components: CLI reference signal transmission, UE measurement and reporting, network node identification, and parameter adjustment. This segmentation allows each component to be optimized independently while maintaining the overall full-duplex system
Solution Approach 2:
The patent introduces CLI reference signals as intermediary elements that facilitate interference measurement and characterization. These reference signals act as mediators between the interfering UEs and the network node, enabling systematic interference management without disrupting full-duplex operations
3Measurement precision
If user equipment performs CLI measurements on reference signals, then interference identification accuracy is improved, but measurement and signaling overhead increases
Solution Approach 1:
The patent implements partial measurement action by configuring UEs to measure CLI reference signals only in specific time windows and frequency resources where interference is likely to occur. This selective measurement approach maintains identification accuracy while reducing overall measurement and signaling overhead
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive, from a user equipment (UE), a cross-link interference (CLI) report. The network node may transmit, to a second network node and based at least in part on the CLI report, CLI information indicating CLI associated with the UE. Numerous other aspects are described.