Vertical handover control algorithm for WLAN and UMTS
US7363037B2 · kind B2 · utility
9Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Oct 26, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Oct 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In this invention, a novel vertical handover control algorithm, consisting of a throughput-based mapping function, QoS-based dynamic handover thresholds, and performance-based trigger timers, are proposed to resolve uncommon pilot problem, QoS requirements, and ping-pong effects, respectively. An analytic model based on a finite state machine is developed to evaluate the proposed algorithm in terms of the handover frequency and achievable throughput. A numerical analysis is also provided to further quantify the performance impacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.