Cellular Basestation Mobility Parameter Control
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Solution Overview
Problem
Femtocell access points and other cellular basestations face challenges in efficiently managing mobility, leading to penalties in connection efficiency when handing over between cells or selecting the strongest signal, which affects user equipment device performance.
Innovation Solution
A method where a cellular basestation receives load reports from other basestations, determines its own load, and sets mobility parameters based on this information, as well as success rates and signal quality, to optimize handovers and cell reselection, thereby controlling user equipment device connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment device maintains connection with basestation that does not provide strongest signal, then connection stability is improved, but connection efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by making the basestation's cell ID and mobility parameters dynamically adjustable based on real-time load conditions. When load is high, the basestation modifies its parameters to discourage user equipment from selecting it, automatically balancing the trade-off between maintaining stable connections and preserving connection efficiency across the network.
Solution Approach 2:
The patent changes physical parameters of the basestation (cell ID, mobility parameters) based on load conditions. By modifying these parameters dynamically, the system resolves the contradiction between connection stability and efficiency, allowing user equipment to make optimal selection decisions that balance both concerns across the entire network.
2Productivity
If basestation modifies mobility parameters dynamically, then load balancing is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling the basestation to automatically adjust its own mobility parameters based on its measured load conditions. This self-regulating mechanism improves load balancing efficiency without requiring complex external control systems, thereby limiting the increase in device complexity to minimal self-monitoring and parameter adjustment capabilities.
3Reliability
If user equipment device frequently measures neighbour cells, then signal quality is improved, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by having the basestation pre-modify its cell ID and mobility parameters based on predicted or current load conditions. This allows user equipment to make informed cell selection decisions without needing to frequently measure neighbour cells, thereby reducing energy consumption while maintaining signal quality through proactive parameter adjustment by the network.
Data Source
AI summary
A cellular basestation can select its own mobility parameters in order to achieve desirable effects in terms of the overall network performance. When a cellular basestation forms part of a group of such basestations on a single local area network, it can receive information from the other basestations in the group, for example relating to the loading on the other basestations, and can use this information in order to set mobility parameters. Where the basestation receives loading information from other basestations in the group, it can set mobility parameters so that a user equipment device becomes less likely to select a more highly loaded cell, and more likely to select a less highly loaded cell.