Patent ID: 8464321
Filing Date: 2013-06-11
Classification: H04L,H04W

Abstract:
1. A method for assigning network addresses, when a mobile node (MN) moves to an access network (AN) of a visited network, the method, in the visited network, comprising: receiving a network access request sent by the MN; determining a home network of the MN according to user information of the MN, and sending an authentication request to the home network for authenticating the MN; receiving an authentication response returned by the home network, wherein the authentication response comprises a local home of address (L-HoA) for identifying the AN where the MN is currently located, when the MN moves and hands over in one AN the L-HoA is not changed, when the MN bands over among ANs, the L-HoA is changed; assigning a local care of address (L-CoA) to the MN, wherein the L-CoA identifies position information of the MN in the current AN, when the MN moves and hands over in one AN, the L-CoA is changed; sending a proxy binding update request message to the home network, when the MN successfully passes the authentication, wherein the proxy binding update request message comprises the L-CoA and an identity of the MN; and receiving a proxy binding update response message returned by the home network to obtain the L-HoA in the proxy binding update response message return by the home network, and bind the identity of the MN, the L-HoA, and the L-CoA.