Mobility management in wireless internet protocol networks

Details Mobility management in wireless internet protocol networks Mobility management in wireless internet protocol networks

2005-05-05

2009-02-03

Sharma, Sujatha (Department: 2618)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S356000, C370S401000, C370S475000

Reexamination Certificate

active

07486641

ABSTRACT:
Handoff of (i) a mobile wirelessly communicating device—a mobile—between (ii) as plurality of stationary base stations within cells within a domain of (iii) a stationary gateway router all within (iv) a communications network based on the Internet Protocol (IP) is without interchange of control and responsive to the mobile, only. The gateway router assigns to the mobile at a time before the handoff IP addresses suitable for the mobile to connect to the gateway router through all the plurality of base stations of the domain. Unilaterally deriving a handoff decision to switch base stations, the mobile directs its wireless communications link to a new base station where signal level registration is performed. Responsive to a link layer trigger at the new base station, the gateway router is informed of the handoff, and both the router and the mobile independently construct the mobile's new IP address.

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