Femtocell Management Entity Registry for Interference Control
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Solution Overview
Problem
Femtocells face challenges in efficient registration and management within cellular networks, particularly due to interference issues and regulatory complexities, especially in dense urban areas with overlapping frequency usage and lack of coordination between broadband and femtocell operators.
Innovation Solution
A system and method for registering femtocells, where a femtocell management entity determines and updates a registry with parameters like GNSS coordinates, interference levels, power, and directionality, enabling communication devices to select and connect to suitable femtocells for data transmission, and dynamically manages these parameters to optimize network performance and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If femtocells operate in dense urban areas with overlapping frequency usage, then network coverage is improved, but interference between femtocells and macrocellular networks increases
Solution Approach 1:
The system performs preliminary registration and parameter collection for femtocells before they begin operation. The femtocell management entity collects parameters including location, power levels, and antenna directionality in advance, enabling the network to pre-assess interference levels and allocate frequencies accordingly, thus preventing interference issues before they arise.
Solution Approach 2:
The system establishes a feedback mechanism where femtocells communicate parameters to the femtocell management entity, which then provides feedback on suitable frequencies and power levels. This continuous feedback loop allows dynamic adjustment of operating parameters to minimize interference while maintaining network coverage in dense urban areas.
2Productivity
If a centralized registration system is implemented for femtocells, then management efficiency is improved, but system complexity increases
Solution Approach 1:
The patent introduces a femtocell management entity as an intermediary component that handles the complexity of centralized registration and parameter management. This intermediary simplifies the overall system architecture by providing a dedicated layer between femtocells and the broader network infrastructure, making the centralized management process more manageable despite the increased system complexity.
3Reliability
If femtocells use licensed frequencies at very low power, then regulatory compliance is improved, but network capacity utilization decreases
Solution Approach 1:
The system dynamically adjusts femtocell operating parameters including power levels and frequency assignments based on real-time network conditions and regulatory requirements. This dynamic adaptation allows the network to maximize capacity utilization while maintaining compliance with regulatory constraints, rather than operating at fixed low power levels.
Data Source
AI summary
Aspects of a method and system for registering femtocells to provide service are provided. In this regard, a communication device may be operable to determine a plurality of femtocells within a vicinity of its location. The communication device may be operable to receive information communicated from one or more of the plurality of femtocells, which are managed by a femtocell management entity. One or more of the plurality of femtocells may be selected for transmitting and/or receiving cellular data based on the communicated information. The communicated information may comprise one or more of global navigation system satellite (GNSS) coordinates, an identification number, potential interference, power levels, location, associated communication devices, and/or directionality of antennas of the one or more femtocells.