Mobile Device Assisted Handoff Control
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Solution Overview
Problem
In dense urban or high-speed environments, existing wireless communication systems face challenges in maintaining reliable real-time services like Voice over IP due to rapid degradation of cell signals during mobile device handoffs between base stations, leading to performance issues.
Innovation Solution
A method where a mobile device assists the handoff process by providing connection data to a handoff server, which generates and transmits handoff data to facilitate a seamless transfer from one base station to another, incorporating signal strength, mobility state, and other relevant factors to enhance handoff control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a network service provider server controls the handoff process, then the handoff can be managed centrally, but the handoff speed and reliability deteriorate in dense urban or high-speed environments where cell signals degrade rapidly
Solution Approach 1:
The patent inverts the traditional handoff control architecture by enabling the mobile device to autonomously control the handoff process based on local measurements, rather than relying on network server control. The mobile device determines handoff timing and selects target base stations using locally available signal strength information and stored handoff data, eliminating the time delay associated with server-based control decisions.
Solution Approach 2:
The patent implements preliminary action by having the mobile device continuously monitor and store handoff data including signal strength measurements from multiple base stations before actual handoff is needed. This pre-collected information enables rapid handoff decisions without requiring real-time server computation when signal degradation occurs.
2Reliability
If additional information is provided from the mobile device to the controlling base station, then the handoff control is improved, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by utilizing the mobile device's existing capabilities for signal measurement and data storage to perform handoff control functions. The same hardware components used for normal communication are leveraged for autonomous handoff decision-making, avoiding the need for specialized additional hardware while still providing improved handoff control reliability.
Data Source
AI summary
A method for controlling a handoff from a first base station to a second base station involves receiving a hand off request including connection data from a client of a mobile device from the first base station at a handoff server of a system network provider. Handoff data is generated for controlling the handoff from the first base station to the second base station responsive to the connection data. The handoff data is transmitted from the handoff server of the system network provider to the client of the mobile device.