Patent ID: 8345625

Claim:
A method of performing a handover in a mobile node which establishes a data communication through a point of attachment (PoA), the method comprising: receiving information regarding capabilities of a new PoA, the information including an IPv6 prefix available field indicating whether an Internet Protocol version 6 (IPv6) prefix is available at the new PoA; determining whether the IPv6 prefix is available at the new PoA, based on the IPv6 prefix available field; and generating an address to be used by the mobile node in a data communication with the new PoA based on whether the IPv6 prefix is available at the new PoA, wherein the receiving the information regarding the capabilities of the new PoA comprises receiving a PoA capabilities information element which contains the information regarding the capabilities of the new PoA, wherein the PoA capabilities information element comprises a value field representing the information regarding the capabilities of the new PoA in a form of a bit map, wherein a fifth bit of the value field comprises an IPv6 prefix available field indicating whether the IPv6 prefix is available at the new PoA.