TDD Interference Control via Dynamic Traffic Load Clustering
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Solution Overview
Problem
Current TDD networking systems face significant cross-link interference due to static uplink and downlink subframe configurations, particularly in environments with varying traffic demands across different cells, leading to reduced system performance.
Innovation Solution
A method and device for dynamic interference control, where a network side device determines traffic load parameters and measurement values between cells to set interference control thresholds, cluster cells based on these values, and adjust uplink and downlink configurations accordingly to minimize cross-link interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different uplink and downlink subframe configurations are set for different cells, then system flexibility and adaptability to traffic requirements are improved, but cross-link interference between adjacent cells increases
Solution Approach 1:
The patent implements dynamic adjustment of uplink and downlink subframe configurations based on real-time traffic load conditions. The network side device monitors traffic loads of adjacent cells and dynamically reconfigures subframe directions (uplink/downlink) to adapt to changing traffic requirements while minimizing cross-link interference through coordinated configuration changes.
Solution Approach 2:
The system employs a feedback mechanism where the network side device continuously monitors traffic load parameters of adjacent cells, compares them against thresholds, and adjusts subframe configurations accordingly. This closed-loop control enables the system to respond to traffic changes while maintaining interference control through coordinated configuration updates.
2Device complexity
If static uplink and downlink subframe configurations are used, then system complexity is reduced and network planning is simplified, but system performance deteriorates under varying traffic demands
Solution Approach 1:
The patent transitions from static to dynamic subframe configuration management. The network side device automatically adjusts uplink and downlink subframe assignments based on real-time traffic load monitoring, enabling the system to adapt to varying traffic demands without manual reconfiguration while maintaining manageable complexity through automated control.
Solution Approach 2:
The system implements self-service through automated traffic load monitoring and configuration adjustment. The network side device autonomously monitors traffic conditions, determines appropriate subframe configurations, and applies changes without external intervention, thereby improving system performance under varying traffic while keeping operational complexity low.
3Productivity
If dynamic reconfiguration of uplink and downlink subframes is implemented, then resource allocation efficiency is improved, but interference control difficulty increases
Solution Approach 1:
The patent employs feedback-based interference control where the network side device monitors traffic load parameters of adjacent cells and uses this information to coordinate subframe configuration changes. By comparing traffic loads against thresholds and adjusting configurations in response to feedback, the system achieves efficient resource allocation while managing interference control through automated coordinated adjustments.
Solution Approach 2:
The system controls interference by dynamically changing configuration parameters (uplink/downlink subframe assignments) based on monitored traffic load conditions. The network side device adjusts these parameters in response to traffic variations, enabling efficient resource allocation while maintaining interference control through parameter-based coordination between adjacent cells.
Data Source
AI summary
A method and device for performing interference control are provided. The method includes: network side device determines traffic load parameter value of each cell and the measurement parameter between the base stations which random two cells belongs to; For the two cells, the network side device determines an interference control threshold according to the traffic load parameter value of the two cells, and compares the determined the measurement parameter with the interference control threshold, and performs cluster partition according to the comparing result. The network side device performs interference control according to the partitioned cluster. Because the factor of cell traffic load is considered in performing TDD cross link interference control, thus the cross link interference in TDD networking is reduced.