Cross-Link Interference Measurement in Full Duplex Wireless Links
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Solution Overview
Problem
Full duplex communication in wireless systems causes significant interference between devices, affecting communication quality and efficiency.
Innovation Solution
A network device sends indication information to terminal devices to allocate resources for processing cross-link interference measurement signals, reducing interference through time-frequency domain resource allocation and beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex communication technology is directly applied to wireless communication system, then communication efficiency is improved, but interference between devices increases significantly
Solution Approach 1:
The network device performs preliminary actions by determining resource allocation information for cross-link interference measurement signals before full duplex communication occurs. This advance preparation allows terminal devices to measure and compensate for interference proactively, resolving the contradiction between maintaining high communication efficiency and reducing device interference through pre-configured resource allocation
Solution Approach 2:
The patent introduces cross-link interference measurement signals as an intermediary mechanism. These specialized signals act as mediators that enable terminal devices to quantify and compensate for interference effects, allowing full duplex communication to proceed efficiently while systematically managing the harmful interference through measurement and compensation protocols
2Object-affected harmful factors
If resource allocation information for cross link interference measurement signal is provided to terminal devices, then interference reduction is achieved, but network device complexity increases
Solution Approach 1:
The network device provides resource allocation information that enables terminal devices to perform self-service interference measurement and compensation. Terminal devices autonomously measure cross-link interference using the allocated resources and apply compensation without requiring complex centralized interference management, thus reducing network device complexity while achieving interference reduction through distributed self-service operations
3Reliability
If terminal devices perform full duplex communication based on allocated resource information, then communication quality is improved, but measurement precision requirements increase
Solution Approach 1:
The patent applies local quality by providing dedicated resource allocation information specifically tailored for cross-link interference measurement signals. This specialized resource allocation creates optimized measurement conditions with appropriate time-frequency resources, enabling terminal devices to achieve the necessary measurement precision for high-quality full duplex communication without requiring excessive precision across all communication parameters
Data Source
AI summary
A communication method performed by a network device comprises: sending first indication information, wherein the first indication information is used for indicating, to a terminal device, resource configuration information for processing a cross-link interference measurement signal. The first indication information may include time-frequency domain resource allocation information.