Base Station Beam-Formed Hot-Spot Power Sharing
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Solution Overview
Problem
Existing solutions for enhancing network capacity in radio networks, such as Densify Macro and Add Small Cells, are inefficient in providing adequate service to moving users due to high Capital Operating Expense (COPEX) and require excessive transmission power, leading to inefficiencies and increased costs.
Innovation Solution
A base station method utilizing beam-formed carriers to serve hot-spots within a cell, sharing total transmission power with macro carriers, allowing for directional and adaptive coverage of moving hot-spots with lower power allocation than required for entire area coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Densify Macro solution is used to increase the number of macro BSs, then network capacity is improved, but COPEX increases significantly
Solution Approach 1:
The patent segments the network into macro BS for coverage and small cells for capacity enhancement. This segmentation allows operators to add capacity in specific areas without deploying more macro BSs, thereby improving network capacity while controlling COPEX.
Solution Approach 2:
The patent applies local quality by deploying small cells with specific characteristics (lower transmission power, targeted coverage) in specific locations (hot-spots) rather than uniformly increasing macro BS density across the entire network. This targeted approach improves capacity where needed while minimizing overall COPEX.
2Productivity
If Add Small Cells solution is used to serve hot-spots, then network capacity is improved, but COPEX is relative high and performance is sensitive to hot-spot location accuracy
Solution Approach 1:
The patent introduces dynamic small cells that can adjust their coverage area and transmission power based on real-time traffic conditions and UE locations. This dynamic behavior allows the system to adapt to moving hot-spots without requiring precise pre-positioning, reducing the sensitivity to location accuracy while maintaining capacity improvement.
3Ease of manufacture
If Pico BSs are deployed to serve hot-spots with lower transmission power, then COPEX is reduced compared to Densify Macro, but the solution is sensitive to hot-spot location changes
Solution Approach 1:
The patent makes small cells dynamic by enabling them to adjust their coverage and power levels in response to changing traffic patterns and UE movements. This dynamic capability allows the system to maintain effective service to hot-spots even when they move, improving adaptability while keeping COPEX lower than macro densification.
4Productivity
If multiple carriers are added to improve macro capacity, then network capacity is improved, but large radio bandwidth resources are needed
Solution Approach 1:
The patent segments capacity enhancement into macro layer and small cell layer, allowing small cells to handle additional traffic on existing carriers rather than requiring multiple carriers at the macro level. This reduces the total radio bandwidth resources needed while still improving network capacity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively enhances network capacity while reducing transmission power requirements, maintaining macro coverage and efficiently managing traffic congestion in hot-spots, thus lowering overall power consumption and operational costs.
Implementation Method 1
serving a hot-spot within the area with one or more beam-formed second carriers
Data Source
AI summary
There is provided a base station (BS) (1000) and a method at the BS that is capable of enhancing network capacity with low transmission power in a radio network. The method comprises serving a cell with one or more first carriers. The method further comprises serving a hot-spot within the cell with one or more beam-formed second carriers, wherein the first and second carriers share a total transmission power for serving the cell. Beam-forming based hot-spot carriers can efficiently save transmission power and contribute to the total power utilization efficiency. The base station (1000) thus can meet the capacity enhancement requirement with low transmission power.