Patent ID: 7860073
Filing Date: 2010-12-28
Classification: H04L,H04W

Abstract:
1. A telecommunications system for communicating internet packet data in accordance with a first internet protocol via a packet radio network operable in accordance with a second internet protocol, the system comprising a user equipment operable to request a bearer for communicating internet protocol data according to the second internet protocol to and from a gateway support node of the packet radio network, the gateway support node being operable to establish a tunnelling protocol bearer for communicating the internet packet data to and from the user equipment across the packet radio network, wherein the user equipment is operable in combination with the gateway support node to form a link local address comprising an interface identifier including a tunnelling end identifier of the tunnelling protocol bearer which ends at the gateway support node of the core network part of the packet radio network, an address component which identifies the address as being local to the packet radio network according to the first internet protocol, to communicate a request for an internet protocol address according to the first internet protocol to an address allocation server using the link local address, to receive an allocated internet protocol address according to the first internet protocol, and to communicate using the allocated internet protocol address.