Patent ID: 6907017
Filing Date: 2005-06-14
Classification: H04L,H04W

Abstract:
1. A method of handing off of (i) a mobile wirelessly communicating device—a mobile—between (ii) a 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), the method comprising: assigning from the gateway router to the mobile at a time before the handoff a set of 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 at the mobile; directing a wireless communications link of the mobile to a new base station; registering at a signal level at the new base station the wireless communications link of the mobile; responsive to a link layer trigger at the new base station, informing the gateway router of the handoff; and independently constructing at both the gateway router, and also at the mobile in consideration of the assigned set of IP addresses, the mobile's new IP address; wherein handoff transpires without interchange of control, and responsive to the mobile, only.