Digital Unit Power Allocation for Boundary Terminals
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Solution Overview
Problem
Current communication base station systems face limitations in optimizing cell design and reducing inter-cell interference due to fixed transmission power settings that do not account for terminal location, particularly in boundary areas between cells.
Innovation Solution
A signal processing system with a digital unit and physically separated radio units that differentiate transmission power based on terminal location by using signal strength values and transmission power equations to allocate higher power to terminals in boundary areas, reducing inter-cell interference and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed transmission power is used for all terminals, then device complexity is reduced and operation is simplified, but inter-cell interference increases and terminal performance in boundary areas deteriorates
Solution Approach 1:
The patent applies local quality by differentiating transmission power control based on terminal location. Terminals in boundary areas between cells receive different transmission power treatment compared to terminals in central areas. The digital unit determines terminal location using signal strength values from multiple radio units and applies location-specific transmission power equations, thereby reducing inter-cell interference in boundary areas while maintaining simple fixed power control in central areas.
2Reliability
If transmission power is increased for all terminals to improve coverage, then terminal performance is improved, but energy consumption increases and interference to other cells increases
Solution Approach 1:
The patent implements local quality by applying different transmission power strategies to different spatial regions. Terminals in boundary areas experience better performance through location-aware power control, while terminals in central areas operate under standard power control. This localized approach ensures reliable service where needed without unnecessarily increasing energy consumption across the entire network.
3Reliability
If more radio units are deployed to improve coverage in boundary areas, then terminal performance in boundary areas is improved, but device complexity and system cost increase
Solution Approach 1:
The patent applies parameter changes by modifying transmission power parameters based on terminal location rather than changing the physical system configuration. The digital unit uses signal strength values and transmission power equations to dynamically adjust power parameters for boundary area terminals, achieving improved boundary area performance without adding more radio units or increasing system complexity.
Data Source
AI summary
A signal processing system, a digital signal processing device (or a digital unit), and a method of controlling transmission power in the system are provided. The digital unit allocates relatively high transmission power to a terminal located in a boundary area of adjacent cells served by two radio units, which is higher than transmission power for transmitting data to a terminal located at about a central area of each cell, rather than the boundary cell of adjacent cells.