Carrier Power Planning in Cellular Networks
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Solution Overview
Problem
Current cellular mobile radio networks face challenges in optimizing network capacity and data rates, particularly in areas with low signal-to-noise ratios, leading to inefficient power usage and inadequate radio access in CDMA-type systems.
Innovation Solution
A method for planning carrier power in CDMA-type cellular networks that involves a data processing system to distribute traffic across service areas based on radio attenuation, allowing for optimized power sharing between carriers to maximize traffic handling capacity and ensure consistent data rates across all sectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant transmission power is used across all cells on the same frequency, then network simplicity is maintained, but network capacity and data rates are not optimized especially in areas with low signal-to-noise ratios
Solution Approach 1:
The patent applies local quality by differentiating power planning between different geographical zones within a cell. Service areas are divided into multiple zones based on signal-to-noise ratio characteristics, and each zone is assigned appropriate power levels. This allows optimization of data rates in specific areas (particularly in low signal-to-noise ratio regions) without requiring complete reconfiguration of the entire network, thus improving network capacity while limiting the increase in overall complexity.
2Reliability
If power is increased to improve data rates in areas with low signal-to-noise ratio, then radio access quality improves, but accumulated transmission power towards user terminals increases leading to inefficiency
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting power levels based on service area characteristics. Instead of using constant power, the system modifies transmission power parameters according to the signal-to-noise ratio conditions in different zones. Power is increased only in specific service areas where it is needed to maintain acceptable data rates, while other areas operate at lower power levels, thereby improving radio access quality where necessary without causing accumulated power inefficiency across the entire network.
3Productivity
If existing power planning methods are used within each cell, then individual cell operation is simplified, but load disparities within the same cell are not addressed and network optimization is limited
Solution Approach 1:
The patent applies segmentation by dividing each cell into multiple service areas or zones based on signal-to-noise ratio characteristics. This segmentation allows the network to address load disparities within the same cell by applying different power planning strategies to different zones. The segmentation enables targeted optimization of network capacity in specific areas without requiring complex centralized control of the entire cell, thus improving productivity while maintaining reasonable operational simplicity through automated zone-based management.
Data Source
AI summary
A system allowing reuse of one same frequency on all the cells of a network. It includes means storing data characteristic of the network and a computing module provided with means to associate carriers of a transmitter with service areas to distribute the traffic to be handled in the sector over N shares of traffic in N complementary areas determined in relation to their radio attenuation, and a determined frequency with each service area, the different carriers used being respectively associated with a single service area of a sector.With the system it is possible to adjust the transmission power of each carrier in relation to the determination made by the computing module to share the power of transmitter between the carriers of one same sector.