Uplink Power Control Parameter Segmentation for VoLTE Coverage
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Solution Overview
Problem
VoLTE/VoNR performance is hindered by uplink coverage holes due to transmission power imbalances in LTE/NR networks, necessitating effective uplink power control to ensure quality of service.
Innovation Solution
A base station in a wireless communication system identifies and determines first and second uplink power control parameters based on received signals, with a longer time period for the first parameter and a shorter time period for the second, updating these parameters to optimize uplink transmit power, employing deep learning modules for hierarchical power control and utilizing algorithms like Greedy-SA and Nelder-Mead to optimize power control settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink power control parameters are updated frequently to improve response speed, then coverage holes are reduced, but system complexity and processing overhead increase
Solution Approach 1:
The power control parameters are segmented into two distinct types: first parameters updated at a first frequency and second parameters updated at a second frequency. This segmentation allows the system to manage complexity by updating different parameters at different rates, ensuring critical parameters are updated frequently while less critical ones are updated less often, thus improving coverage without proportionally increasing overall system complexity.
Solution Approach 2:
The patent implements dynamic power control by adjusting update frequencies based on network conditions and parameter importance. The first power control parameters are updated at a first update frequency while second parameters are updated at a second update frequency, allowing the system to adaptively respond to changing conditions without maintaining a uniformly high update rate for all parameters.
2Reliability
If multiple power control parameters are updated simultaneously to optimize performance, then VoLTE/VoNR quality improves, but processing time and computational resources increase
Solution Approach 1:
The power control parameters are divided into two groups that are updated at different frequencies. First parameters are updated at a first update frequency while second parameters are updated at a second update frequency. This segmentation enables the system to optimize VoLTE/VoNR service quality by ensuring critical parameters are updated frequently while managing processing time by staggering updates across different parameter groups rather than updating all parameters simultaneously.
3Reliability
If uplink transmission power is increased to eliminate coverage holes, then signal reliability improves, but energy consumption and interference increase
Solution Approach 1:
The system dynamically adjusts uplink transmission power based on real-time channel conditions and parameter updates. By updating power control parameters at optimized frequencies rather than continuously, the system maintains reliable uplink signals when needed while avoiding unnecessary power increases during stable conditions, thus reducing overall energy consumption while maintaining signal reliability.
Solution Approach 2:
The power control mechanism uses feedback from channel quality indicators and uplink signal measurements to adjust transmission power. The system monitors coverage hole conditions and only increases power when actually needed to maintain reliability, rather than maintaining high power continuously, thereby reducing energy loss while ensuring signal reliability when required.
Data Source
AI summary
Methods and apparatuses for voice over long-term evolution/voice over new radio (VoLTE/VoNR) performance for a cellular communication system. A method of operating a base station includes receiving, from a user equipment (UE), uplink (UL)signals; identifying, based on the UL signals, a first and second parameters; determining first and second UL power control parameters based on the first and second parameters, respectively; determining a first time period for the first UL power control parameter and a second time period for the second UL power control parameter, wherein the first time period is longer than the second time period; updating the first UL power control parameter based on the first time period and the second UL power control parameter based on the second time period; and transmitting, to the UE, the updated first and second UL power control parameters for an UL transmit power of the UE.