Terminal RSRP Averaging for Uplink Power Control in 5G
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication technologies face challenges in efficiently communicating between terminal apparatuses and base station apparatuses, particularly in reducing complexity and interference in fifth-generation cellular systems with high-speed and low-latency requirements, such as eMBB, URLLC, and mMTC, especially with the use of massive MIMO and beamforming.
Innovation Solution
The solution involves a terminal apparatus and base station apparatus that utilize a receiver to measure and average the RSRP of multiple reference signals, enabling efficient transmit power control for uplink signals, and a base station that transmits and receives RSRP measurements to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple reference signals are transmitted for beamforming in massive MIMO systems, then coverage and communication reliability are improved, but measurement complexity and processing overhead increase
Solution Approach 1:
The patent combines multiple RSRP measurement values into a single reference RSRP by selecting the maximum value and adding a predetermined offset. This merging approach consolidates multiple measurements into one representative value, reducing the complexity of processing multiple reference signals while maintaining communication reliability through beamforming.
Solution Approach 2:
The patent introduces a predetermined offset value that is added to the maximum RSRP measurement to generate the reference RSRP. This parameter change allows the system to account for variations in reference signal power while simplifying the measurement process, thereby improving reliability without proportionally increasing measurement complexity.
2Measurement precision
If RSRP measurements are performed for multiple reference signals, then transmit power control accuracy is improved, but processing time and complexity increase
Solution Approach 1:
The patent extracts only the maximum RSRP value from multiple measurements and uses it as the basis for calculating reference RSRP. This extraction approach focuses on the most relevant measurement data, improving transmit power control accuracy by considering the strongest signal while reducing processing time by eliminating the need to process all measurement values equally.
Solution Approach 2:
The patent performs preliminary selection of the maximum RSRP value before calculating the reference RSRP. This preliminary action identifies the most significant measurement in advance, allowing the system to achieve accurate power control decisions more quickly by focusing computational resources on the critical value rather than processing all measurements simultaneously.
3Area of stationary object
If multiple reference signals are used for downlink measurements, then beamforming gain and coverage are improved, but interference between terminal apparatuses increases
Solution Approach 1:
The patent enables each terminal apparatus to independently calculate its own reference RSRP by selecting the maximum RSRP from its measurements and adding a predetermined offset. This self-service approach allows terminals to autonomously determine their reference values without coordinating with other terminals, thereby improving coverage through independent beamforming while reducing interference caused by conflicting measurement and reporting procedures.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A terminal apparatus includes: a receiver configured to receive a plurality of reference signals from a base station apparatus in a cell; a measurement unit configured to measure at least one reference signal received power (RSRP) of at least one of the plurality of reference signals; and a calculating unit configured to average N highest ones of the at least one RSRP measured to obtain a reference RSRP of the cell.