Multi-TRP Wireless Communication Using Virtual Cell IDs
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Solution Overview
Problem
Existing wireless communication systems struggle to efficiently utilize multiple transmission/reception points within the same cell with the same physical cell identity (PCI), as current standards are designed for environments with distinct cell identities, leading to inefficiencies and performance degradation.
Innovation Solution
A wireless communication system that employs multiple transmission/reception points within the same cell by using a first transmission/reception point with wider coverage and a virtual cell identity, allowing coordinated signal transmission and reception among points with the same PCI, while minimizing changes to existing standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission/reception points use the same physical cell identity (PCI) within the same cell, then communication efficiency is improved and standard modifications are minimized, but interference management and signal coordination become more complex
Solution Approach 1:
The patent segments the cell into multiple transmission/reception points (TRPs), each with distinct spatial locations but sharing the same PCI. This segmentation allows efficient resource utilization while maintaining unified cell identity, resolving the contradiction between communication efficiency and coordination complexity through structured spatial division.
Solution Approach 2:
The patent introduces reference signals as intermediary elements that facilitate coordination between multiple TRPs sharing the same PCI. These reference signals enable channel estimation and interference management without requiring complex direct coordination protocols, thus improving communication efficiency while controlling system complexity.
2Area of stationary object
If multiple transmission/reception points are deployed within the same cell, then network coverage and capacity are improved, but interference between transmission points increases
Solution Approach 1:
The patent applies local quality by assigning different spatial characteristics and beamforming patterns to each TRP within the same cell. Each TRP optimizes its transmission locally for its specific coverage area while sharing the same PCI, thereby expanding overall network coverage while minimizing inter-TRP interference through localized signal optimization.
Solution Approach 2:
The patent employs dynamic resource allocation and beamforming adjustments for each TRP based on real-time channel conditions. This dynamic adaptation allows multiple TRPs to operate simultaneously within the same cell with the same PCI, expanding coverage while actively managing and reducing interference through continuous optimization.
Data Source
AI summary
Disclosed is a wireless communication system using multiple transmission and reception points. In a wireless communication system having a first transmission and reception point and at least one second transmission and reception point belonging to the same cell, the first transmission and reception point has a wider transmission area than the at least one second transmission and reception point, and the first transmission and reception point and the at least one second transmission and reception point generate downlink transmission signals by using the same physical layer cell ID or virtual cell IDs allocated to each terminal, and then the terminals generate uplink transmission signals by using the allocated virtual cell IDs.