Precoder Algorithm for Inter-Cluster Interference Mitigation
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Solution Overview
Problem
Current wireless communication systems face challenges in mitigating inter-cluster interference, particularly due to the lack of consideration for UE-specific capabilities and channel estimation errors in precoding algorithms, which affects network performance and throughput.
Innovation Solution
A method that estimates sounding channel interference from different wireless device categories and determines downlink precoder weights to minimize interference, taking into account UE capabilities and channel estimation errors, thereby reducing inter-cluster interference and enhancing network capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If precoding algorithms do not consider UE-specific capabilities and channel estimation errors, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies local quality by categorizing UEs into different groups based on their specific capabilities (e.g., interference mitigation capabilities, number of antennas) and applying different precoding strategies to each category. This allows the system to optimize precoding accuracy for each UE type without uniformly increasing complexity across all devices. The channel estimation error consideration also applies local quality by adapting precoding based on specific UE channel conditions.
Solution Approach 2:
The patent implements dynamics by making precoding algorithms adaptive to changing channel conditions and UE capabilities. The system dynamically adjusts precoding weights based on real-time channel estimation results and UE-specific parameters, allowing the algorithm to optimize performance without requiring fixed complex structures for all UEs.
2Productivity
If coordinated multipoint transmission is implemented across multiple clusters, then productivity is improved, but object-generated harmful factors worsen
Solution Approach 1:
The patent converts inter-cluster interference from a harmful factor into a useful resource by using it for channel estimation. The interference from other clusters, which would normally degrade performance, is instead utilized to estimate the channel state information needed for precoding. This transforms the harmful interference into beneficial information for improving throughput.
Solution Approach 2:
The patent introduces channel estimation as an intermediary process that mediates between coordinated multipoint transmission and inter-cluster interference. By using the interference signals as intermediaries for channel estimation, the system can perform coordinated transmission while managing interference effects through informed precoding decisions.
3Measurement precision
If sounding channel interference is used for channel estimation, then measurement precision is improved, but object-generated harmful factors worsen
Solution Approach 1:
The patent applies blessing in disguise by converting sounding channel interference, which is normally a harmful factor degrading channel estimation, into a useful resource. The interference signals from other clusters during sounding are utilized to estimate channel state information, transforming what would be noise into valuable measurement data for improving precoding accuracy.
Data Source
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AI summary
The present disclosure relates to methods and devices for mitigating inter-cluster interference in clusters where one or more network nodes are transmitting in coordination using several transceiver antennas. In particular the disclosure relates to improved precoder algorithms to be used for coordinated multipoint transmission applications. The disclosure also relates to corresponding computer programs. The disclosure proposes a method, performed in a communication system, of mitigating inter-cluster interference, wherein the communication system is configured to coordinate transmissions of one or more wireless devices within two or more wireless device categories and one or more network nodes, wherein the one or more network nodes are transmitting in coordination to the wireless devices in the cluster using several transceiver antennas.