Multi-Node Reference Signal Identification via Node-Specific Parameters
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Solution Overview
Problem
In multi-node wireless communication systems, there is a need for a method to identify and differentiate reference signals transmitted by various nodes to improve system performance and user equipment (UE) feedback accuracy.
Innovation Solution
The method involves transmitting node-specific information, such as unique node IDs, antenna port information, and reference signal configurations, allowing each node to transmit distinct reference signals, enabling the user equipment to identify and differentiate between nodes based on cell IDs, antenna ports, and reference signal configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If nodes transmit reference signals using the same cell ID and configuration, then system complexity is reduced, but node identification accuracy deteriorates
Solution Approach 1:
The patent segments the reference signal transmission by introducing node-specific parameters (node ID, antenna port index, reference signal configuration) that differentiate each node's signal. This segmentation allows the system to maintain simplicity in overall structure while enabling precise node identification through distinct signal characteristics from each node.
2Measurement precision
If each node transmits a unique reference signal, then node identification accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning specific identifying parameters (node ID, antenna port, reference signal configuration) to each node's reference signal transmission. This allows each node to have unique signal characteristics locally while maintaining a unified system framework, thereby achieving accurate node identification without proportionally increasing overall system complexity.
3Adaptability or versatility
If nodes operate independently as separate base stations, then node autonomy is improved, but system performance deteriorates
Solution Approach 1:
The patent implements universality by having nodes operate under unified control from the base station while maintaining their individual reference signal transmissions. Each node serves multiple functions: it operates autonomously in transmitting its unique reference signal but also cooperates with other nodes under base station management, achieving both node autonomy and improved system performance through coordinated operation.
Data Source
AI summary
A method of transmitting a reference signal in a multi-node system including a plurality of nodes and a base station for controlling the plurality of nodes is provided. The method includes: transmitting node information to a user equipment; and transmitting the reference signal to the user equipment from at least one node among the plurality of nodes on the basis of the node information, wherein the node information includes information capable of identifying the reference signal transmitted from the at least one node, and wherein each of the plurality of nodes transmits a different reference signal.