Wireless Terminal Measurement Using CRS and RSS Signals
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Solution Overview
Problem
Current wireless communication systems face challenges in improving terminal measurement performance, mobility, and reducing signaling overhead, particularly in supporting high-speed data services and massive device connections with low latency and high energy efficiency.
Innovation Solution
A method for a terminal in a wireless communication system that involves receiving configuration information for reference signal measurement, calculating reference signal receive power (RSRP) and quality (RSRQ) using cell-specific reference signals (CRS) and resynchronization signals (RSS), and reporting these values to the serving base station, while optimizing antenna port configuration and RSS transmission parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal uses only CRS for measurement, then the measurement process is simple, but the measurement performance and mobility are limited
Solution Approach 1:
The patent combines CRS and RSS signals for joint measurement to improve measurement performance. The terminal measures both CRS and RSS from neighbor cells and uses their combination for RSRP/RSRQ calculation, thereby enhancing measurement accuracy and mobility support while managing complexity through unified measurement configuration.
Solution Approach 2:
The RSS signal is introduced to serve multiple functions: it acts as both a synchronization signal and a measurement signal. This multi-functionality allows the system to improve measurement performance without adding separate dedicated measurement signals, thereby managing complexity while enhancing capabilities.
2Measurement precision
If the terminal measures both CRS and RSS from neighbor cells, then measurement performance is improved, but signaling overhead increases
Solution Approach 1:
The network pre-configures the terminal with RSS measurement parameters including signal characteristics, resource locations, and measurement conditions before actual measurement. This preliminary configuration reduces runtime signaling overhead by establishing measurement rules in advance, allowing the terminal to efficiently measure both CRS and RSS without continuous network instructions.
3Productivity
If the system supports massive device connections with high data traffic, then service capacity increases, but resource shortage and latency increase
Solution Approach 1:
The system implements periodic RSS transmission and measurement rather than continuous operation. RSS is transmitted at specific periodic intervals, and the terminal performs measurements at these periodic occasions, reducing resource consumption and latency while maintaining adequate service capacity for massive device connections.
Data Source
AI summary
Disclosed are a method for improving measurement performance of a terminal in a wireless communication system, and an apparatus therefor. Specifically, in a method wherein a terminal performs measurement in a wireless communication system, a method performed by the terminal comprises the steps of: receiving, from a serving base station, configuration information for measurement of a reference signal receive power (RSRP) and/or a reference signal received quality (RSRQ), wherein the configuration information includes port configuration information related to an antenna port to which a reference signal is transmitted and measurement configuration information related to a correlation between a cell-specific reference signal (CRS) and a re-synchronization signal (RSS) for the measurement; receiving the CRS and/or the RSS from a neighbor base station; calculating the RSRP and/or the RSRQ according to the configuration information by using the CRS and the RSS; and reporting the RSRP and/or the RSRQ to the serving base station.