Base Station Reference Signal Configuration for Cross-Link Interference Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing LTE system's rigid resource configuration framework is unable to adapt flexibly to dynamic changes in traffic loads, leading to strong cross-link interference (CLI) in flexible duplex technologies, which hampers system performance as it cannot effectively estimate and identify CLI between neighboring cells.
Innovation Solution
A method and apparatus for acquiring and applying reference signal configuration information, allowing base stations and terminals to measure and manage links that may cause interference, thereby estimating and identifying CLI, by acquiring and applying reference signal configuration information including local, neighboring, or terminal cell information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible resource configuration is implemented to adapt to dynamic traffic loads, then system adaptability is improved, but cross-link interference between neighboring cells increases
Solution Approach 1:
The patent implements a feedback mechanism where the first base station receives interference information from the second base station about downlink resources used by terminals in the second cell. Based on this feedback, the first base station adjusts uplink resource allocations to avoid conflicts and interference, enabling dynamic adaptation while managing CLI
Solution Approach 2:
The patent introduces reference signals as an intermediary mechanism to detect and identify cross-link interference. These reference signals enable the base stations to measure and assess interference levels between cells, facilitating informed resource configuration decisions that balance flexibility with interference management
2Productivity
If flexible duplex technology is used to improve traffic load adaptation, then resource utilization is improved, but CLI estimation and identification capability deteriorates
Solution Approach 1:
The patent applies preliminary action by having the second base station proactively send downlink resource information to the first base station before interference occurs. This advance information allows the first base station to pre-adjust uplink resource allocations, preventing CLI while maintaining flexible duplex operation
Solution Approach 2:
Reference signals serve as an intermediary measurement tool that enables accurate CLI estimation in flexible duplex scenarios. These signals provide a dedicated mechanism for interference measurement that works independently of the flexible resource configuration, resolving the contradiction between resource flexibility and measurement precision
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
Provided is a method for applying reference signal configuration information. The method includes: acquiring, by a base station, the reference signal configuration information, where the reference signal configuration information includes at least one of: reference signal configuration information of a local cell, reference signal configuration information of a neighboring cell, or reference signal configuration information of a terminal in the neighboring cell; and performing, by the base station, a transmission or a measurement according to the acquired reference signal configuration information. Further provided are another method and apparatus for applying reference signal configuration information and a storage medium.