Vertical Sectorization and CoMP for Cellular Interference
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Solution Overview
Problem
Modern cellular communication networks face interference issues in edge regions of cooperation areas, particularly due to vertical sectorization, which affects spectral efficiency and requires optimization of beam widths, and CoMP methods generate high backhaul capacity requirements.
Innovation Solution
A method combining vertical sectorization and coordinated multipoint (CoMP) processing to configure communication channels, where the base station determines the user equipment's location within cooperation areas and applies CoMP for optimal channel adaptation, reducing interference and backhaul requirements by selecting UE-specific CoMP sets based on direction-on-arrival measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vertical sectorization is applied to increase spectral efficiency, then spectral efficiency is improved, but interference is generated in edge regions
Solution Approach 1:
The patent combines vertical sectorization with coordinated multipoint (CoMP) processing to merge the benefits of both techniques. The base station applies vertical sectorization to create cooperation areas for spectral efficiency enhancement, while simultaneously employing CoMP processing at cell edge locations to mitigate interference. This merging allows the system to achieve both improved spectral efficiency and reduced interference by coordinating multiple points (base stations or sectors) to serve edge users.
Solution Approach 2:
The patent applies different processing strategies to different locations within the cooperation area. For cell center locations, vertical sectorization is applied to maximize spectral efficiency. For cell edge locations, CoMP processing is applied to reduce interference. This local differentiation allows the system to optimize performance according to the specific requirements of different spatial regions.
2Object-generated harmful factors
If CoMP processing is applied to reduce interference, then interference is reduced, but backhaul capacity requirements increase
Solution Approach 1:
The patent applies CoMP processing selectively only at cell edge locations where interference mitigation is most needed, rather than applying it uniformly across all locations. This localized application reduces the overall backhaul capacity requirements compared to universal CoMP deployment, while still providing effective interference reduction where it is most beneficial for user experience.
3Productivity
If beam widths are optimized for vertical sectorization, then spectral efficiency is improved, but system complexity increases
Solution Approach 1:
The base station autonomously determines the optimal beam widths for vertical sectorization without requiring complex external optimization systems. The base station uses its own measurements and knowledge of the network configuration to select appropriate beam widths, thereby simplifying the overall system architecture while maintaining spectral efficiency gains.
Data Source
AI summary
There is provided a method for configuring a communication channel between a base station and a user equipment within a cellular network system. The cellular network system includes at least one cooperation area. The base station is assigned to the at least one cooperation area, and the user equipment is served by the base station. The method includes applying, by the base station, a vertical sectorization and thereby creating the at least one cooperation area, determining, by the base station, the location of the user equipment in relation to the at least one cooperation area, and configuring, by the base station, the communication channel between the base station and the user equipment by using coordinated multipoint processing, if the determined location of the user equipment corresponds to a predetermined location.