Interference Measurement Reference Information in Distributed Antenna Systems
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Solution Overview
Problem
In a distributed antenna system, existing methods for interference measurement are not suitable for limiting interference measurement for terminals, leading to inaccuracies and resource wastage due to the lack of standardized methods for interference measurement reference information notification.
Innovation Solution
A method where a base station notifies a terminal of interference measurement reference information specifying a reference signal or resource position for interference measurement, using high-level signaling to instruct the use of CRS, CSI-RS, or DMRS for accurate interference measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If interference measurement is performed without standardized reference information notification, then terminals can perform interference measurement using existing methods, but measurement accuracy deteriorates and transmission resources are wasted
Solution Approach 1:
The base station performs preliminary action by notifying the terminal of interference measurement reference information (such as CRS resource positions and CSI-RS resource configurations) before the terminal performs interference measurement. This advance notification enables the terminal to accurately identify reference signals for interference measurement, improving measurement accuracy and preventing resource waste from incorrect measurements
Solution Approach 2:
The interference measurement reference information acts as an intermediary between the base station and terminal. It includes specific configurations such as CRS resource positions, CSI-RS resource indicators, and measurement resource sets that mediate the interference measurement process, enabling accurate measurement while avoiding resource waste
2Adaptability or versatility
If multiple reference signals are supported for interference measurement, then adaptability to different distributed antenna configurations is improved, but device complexity increases
Solution Approach 1:
The patent implements universality by enabling the system to support multiple reference signal types (CRS and CSI-RS) for interference measurement within a unified framework. The base station can configure different reference signals based on distributed antenna configurations, and the terminal can adaptively measure interference using the appropriate reference signal, achieving multi-functionality without proportionally increasing complexity
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting interference measurement configurations based on system conditions. The base station modifies parameters such as reference signal types, resource positions, and measurement settings according to different distributed antenna configurations, enabling adaptability while managing complexity through controlled parameter variation
Data Source
AI summary
Disclosed in the present document is a method for notifying interference measurement reference information, and a method and apparatus for measuring interference, wherein a base station notifies a terminal of interference measurement reference information which specifies a reference signal used for interference measurement and/or a reference resources position for interference measurement. According to the solution in the present document, in a distributed antenna system, the base station, through an interference measurement reference message, specifies for the terminal the reference signal used for interference measurement and/or the reference resources position for interference measurement; after receiving the interference measurement reference information, the terminal performs interference measurement according to the reference signal and/or the reference resources position for interference measurement specified by the base station.