Cell Power Parameter Adjustment for Fixed RRU Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ensuring cell coverage when the RRU power is fixed, particularly when the cell bandwidth increases, as reducing CRS power to prevent RRU power from exceeding a threshold results in reduced cell coverage.
Innovation Solution
Adjusting power parameters such as transmit power spectral density, user-level parameter, and demodulation reference signal power based on the location relationship between the terminal and the access network device to maintain CRS power and prevent RRU power from exceeding a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the cell bandwidth increases, then the frequency parameter is improved, but the CRS power must be reduced which causes cell coverage to shrink
Solution Approach 1:
The patent changes power allocation parameters by introducing transmit power spectral density as a new controllable parameter. When cell bandwidth increases, the system adjusts the transmit power spectral density parameter to maintain appropriate power distribution, allowing both increased bandwidth and maintained cell coverage through parameter optimization rather than simple power reduction.
2Power
If the CRS power is reduced to prevent RRU power from exceeding the threshold, then the RRU power constraint is satisfied, but the cell coverage shrinks
Solution Approach 1:
The patent applies local quality by differentiating power allocation for different terminal types. Cell-edge terminals receive higher power allocation while non-cell-edge terminals receive standard allocation. This localized power distribution allows the system to maintain cell coverage for edge terminals while controlling overall RRU power consumption through selective rather than uniform power reduction.
3Power
If the transmit power spectral density is reduced to maintain total power within threshold, then the RRU power limit is satisfied, but the power available for cell coverage is reduced
Solution Approach 1:
The patent introduces dynamic power allocation that adapts to terminal location relationships. The system dynamically determines whether terminals are cell-edge or non-cell-edge based on their position relative to the access network device, and dynamically adjusts power parameters accordingly. This dynamic approach allows transmit power spectral density to be reduced overall while maintaining adequate power for cell coverage through selective allocation to terminals that need it most.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
This application provides a parameter adjustment method and a related device. The method includes: monitoring a frequency parameter of a cell; if it is detected that the frequency parameter of the cell increases, determining a location relationship between a first terminal and an access network device, where the first terminal is a terminal camping on the cell; and adjusting a target power parameter of the first terminal based on the location relationship between the first terminal and the access network device, so that a radio remote unit power does not exceed a preset power, where the target power parameter is a power parameter other than a cell-specific reference signal power. According to the foregoing method, cell coverage can be ensured when the RRU power is fixed.