Patent ID: 7885410
Filing Date: 2011-02-08
Classification: H04L,H04W

Abstract:
1. A method comprising: receiving data from a roaming client at a new access point; transmitting a registration request to an access server from the new access point for the roaming client registered with the access server and previously in communication with an old access point; receiving a registration reply message from the access server at the new access point, the registration reply message comprising a ticket encrypted with a session key of the old access point and a context transfer key; transmitting a context request message from the new access point to the old access point, the context request message comprising the ticket and an authenticator; receiving a context response message from the old access point at the new access point, the context message comprising an updated authenticator and context information for the roaming client, said context information comprising state information and address bindings; and transmitting to the client, in response to a location discovery request, a ticket encrypted with a session key of a second client and containing a sidestream key used to provide private sidestream transmissions between the clients.