LTE Resynchronization Signal RSRP Calculation
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately measuring reference signal received power (RSRP) in user equipment (UE) operating in machine type communication (MTC), which affects network functionality such as UE mobility and cell selection/reselection.
Innovation Solution
The method involves receiving a resynchronization signal (RSS) from the radio access network (RAN) and calculating RSRP using equations based on scalar products in both time and frequency domains, with options for combining signals and averaging across subframes, to enhance measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional RSRP measurement methods are used in MTC UE, then the measurement process is simple, but the measurement accuracy is insufficient
Solution Approach 1:
The patent segments the RSRP calculation process into distinct domain-specific methods (time domain, frequency domain, and combined time-frequency domain). Each segment uses appropriate mathematical operations (scalar products) tailored to its domain characteristics, allowing the system to achieve high measurement accuracy by selecting the most suitable calculation method for specific measurement scenarios without requiring all calculation complexities.
2Measurement precision
If signal combining and averaging across subframes is performed, then measurement accuracy improves, but processing time increases
Solution Approach 1:
The patent implements partial action by allowing the UE to perform signal combining and averaging operations selectively based on measurement requirements. The system can choose to average across a limited number of subframes or perform combining operations only when measurement accuracy requirements demand it, rather than always performing full processing. This enables the system to achieve sufficient measurement accuracy while minimizing unnecessary processing time consumption.
Data Source
AI summary
This disclosure describes methods, systems, and devices for measuring a reference signal received power (RSRP) in a user equipment (UE) that operates in machine type communication (MTC). In one example, a method involves receiving, from a radio access network (RAN) serving the UE, a resynchronization signal (RSS). The method also involves calculating a reference signal received power (RSRP) of the RSS.