Multi-TRP Clustering and Power Allocation for Edge Interference
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Solution Overview
Problem
Increasing the number of transceiver units (TXRUs) in wireless communication systems to enhance performance is limited by practical feasibility and results in interference issues, particularly at cluster edges, which existing technologies struggle to mitigate effectively.
Innovation Solution
Implement multi-tier clustering and dynamic cluster selection across multiple transmit-receive-point (TRP) sets, utilizing 2nd-tier clusters to mitigate interference at cluster edges and optimize power allocation based on user equipment signal power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of transceiver units (TXRUs) is increased to enhance system performance, then transmission capacity and reliability are improved, but interference at cluster edges increases and practical feasibility decreases
Solution Approach 1:
The patent divides the transmission system into multiple clusters, each served by a dedicated TRP. This segmentation isolates interference to specific cluster boundaries while maintaining clean service areas within each cluster, thereby reducing overall interference impact despite having multiple TXRUs active.
Solution Approach 2:
The patent introduces a cluster head as an intermediary node that coordinates between TRPs and UEs. The cluster head manages power allocation and transmission scheduling to mitigate interference at cluster edges, acting as a mediator that enables multiple TXRUs to operate cooperatively without causing excessive mutual interference.
2Productivity
If the number of antenna elements is increased to improve transmission performance, then data rates increase, but deployment complexity increases and space correlation issues arise
Solution Approach 1:
Instead of increasing the horizontal number of antenna elements, the patent utilizes vertical stacking of TRPs at different heights. This dimensional transition from 2D horizontal expansion to 3D vertical arrangement achieves higher TXRU counts without the space correlation and deployment complexity issues of horizontal expansion.
Solution Approach 2:
The patent combines multiple TRPs serving different clusters into a coordinated joint transmission system. By merging the capabilities of multiple TRPs while maintaining their spatial separation, the system achieves enhanced performance without requiring a single large complex antenna array.
3Quantity of substance
If multiple TRPs are deployed to increase TXRU plurality, then transmission capacity improves, but interference mitigation becomes more difficult
Solution Approach 1:
The patent segments the service area into distinct clusters with dedicated TRPs, creating clear interference boundaries. This segmentation makes interference mitigation easier by localizing interference problems to specific cluster interfaces rather than dealing with interference from multiple TRPs simultaneously across the entire area.
Solution Approach 2:
The patent dynamically adjusts transmission parameters including power allocation and timing based on the specific cluster configuration and UE locations. By changing these parameters adaptively, the system manages interference between multiple TRPs effectively while maintaining high transmission capacity.
Data Source
AI summary
A method and device for clustering and power allocation for multi-TRP transmission. A method comprises providing multi-tier clustering to enable joint transmission across multiple transmit-receive-point (TRP) sets. The method includes utilizing one or more 2nd-tier clusters located in an intersection of one or more adjacent 1st-tier clusters to mitigate interference at cluster edges, and providing dynamic cluster selection to enable the joint transmission across the multiple TRPs while mitigating interference at cluster edges based on selecting a tailored cluster with respect to a signal power of each user equipment (UE) within the 1st-tier clusters.