RSS Measurement Using Power Boosting and CRS Ports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LTE MTC systems face challenges in improving RSRP and RSRQ measurement performance, particularly in utilizing power boosting information and CRS port information for enhanced measurement capabilities.
Innovation Solution
A method is introduced where a terminal receives power boosting information and CRS port information from a base station to perform RSRP and RSRQ measurements using Resynchronization Signals (RSS), with configurations such as fixing RSS ports to CRS ports, port cycling, and flexible signaling to enhance measurement performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RSRP and RSRQ measurements are performed using only CRS in LTE MTC systems, then the measurement process is simple, but the measurement performance and accuracy are limited
Solution Approach 1:
The patent combines RSS and CRS measurements into a unified measurement framework. The terminal device performs RSRP and RSRQ measurements by integrating both signal types, where RSS provides additional measurement opportunities and CRS provides reliable reference signals. This merging approach improves measurement performance by utilizing the complementary strengths of both signals without significantly increasing implementation complexity.
Solution Approach 2:
The patent enables the measurement system to serve multiple functions by using both RSS and CRS. The same measurement mechanism can operate with CRS alone, RSS alone, or both together depending on configuration and availability. This multi-functionality allows the system to adapt to different deployment scenarios while maintaining a unified measurement approach that improves overall accuracy.
2Measurement precision
If power boosting information and CRS port information are not utilized, then the measurement configuration is simple, but the measurement accuracy and reliability are insufficient
Solution Approach 1:
The patent applies preliminary action by having the network pre-configure power boosting information and CRS port information before measurement operations. The terminal device receives and stores these parameters in advance, allowing it to perform accurate RSRP and RSRQ measurements without real-time computation of complex parameters. This pre-configuration approach improves measurement accuracy while keeping the terminal device complexity low.
Solution Approach 2:
The patent utilizes parameter changes by incorporating power boosting information that indicates how RSS power relates to CRS power. The terminal device uses this power relationship parameter to adjust its measurements appropriately when combining RSS and CRS data. This parameter-based approach enables accurate measurements without requiring complex signal processing, resolving the contradiction between accuracy and complexity.
3Reliability
If RSS measurement is integrated with CRS measurement, then measurement performance improves, but the processing complexity increases
Solution Approach 1:
The patent applies segmentation by separating the measurement process into distinct stages: RSS measurement, CRS measurement, and combined RSRP/RSRQ calculation. Each stage processes specific signal types independently using dedicated algorithms, then combines results in a structured manner. This segmentation improves reliability by ensuring each signal type is measured with appropriate methods while keeping processing complexity manageable through modular organization.
Data Source
AI summary
The present specification provides a method for performing measurement by using an RSS in a wireless communication system. More specifically, the method performed by a terminal comprises the steps of: receiving, from a first base station, power boosting information indicating a relative value compared to cell-specific reference signal (CRS) power and CRS port information indicating the number of CRS antenna ports; receiving the RSS from the first base station; and measuring the reference signal received power (RSRP) and/or the reference signal received quality (RSRQ) of the RSS on the basis of the power boosting information and the CRS port information.