Patent ID: 7908386
Filing Date: 2011-03-15
Classification: H04L,H04W

Abstract:
1. A method in a telecommunications network, the method comprising: a mobile station (MS) beginning a session in a first Network Address Translation (NAT) domain, wherein dynamic NAT rules are created for the session; the MS moving from the first NAT domain to a second NAT domain; transferring the dynamic NAT rules created in the first NAT domain to the second NAT domain via a first Media Policy Routing (MPR) function; activating the dynamic NAT rules, created in the first NAT domain, in the second NAT domain; creating a tunnel between the second NAT domain and the first MPR for transferring the MS session traffic between the second NAT domain and the first MPR; utilizing a new set of dynamic NAT rules created in the second NAT domain, wherein the active sessions are continuing to be transferred between the second NAT domain and the first MPR via the tunnel; and removing the tunnel between the second NAT domain and the first MPR when all transferred sessions are terminated.