Method and system for user-requested vertical handoff

Details Method and system for user-requested vertical handoff Method and system for user-requested vertical handoff

2011-08-30

2011-08-30

D'Agosta, Stephen M (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S437000, C455S438000, C455S439000, C455S442000, C455S443000, C455S444000, C455S552100, C455S553100, C370S328000, C370S331000, C370S332000, C370S334000

Reexamination Certificate

active

08010107

ABSTRACT:
While a mobile node is engaged in a communication session via a first air interface channel, the user of the mobile node requests a vertical handoff. In response to the user's handoff request, the mobile node goes into a dormant mode to release the first air interface channel. The mobile node then acquires a second air interface channel, which may have a higher data rate than the first air interface channel, and continues the communication session via the second air interface channel. The mobile node may also determine that a vertical handoff may be available, e.g., by checking a preferred roaming list (PRL), and then indicate to the user that a vertical handoff may be available.

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Glen Dobson, “Supporting Streamed Multimedia in a Mobile Environment,” BSc. Thesis, Lancaster University, Apr. 2002.
Chen, “A Smart Decision Model for Vertical Handoff,” Proc. 4thANWIRE International Workshop on Wireless Internet and Re-configurability, 2004.

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