Patent ID: 7697934
Filing Date: 2010-04-13
Classification: H04W

Abstract:
1. A method of registering a mobile station in a telecommunication network having a core network portion of a licensed mobile communication network and at least two mobile communication access networks, at least one of which is an unlicensed radio access network, said method comprising the steps of: receiving by an access network controller in the unlicensed radio access network, a registration request message from the mobile station, wherein the registration request message is received via an access point utilizing an unlicensed radio interface; creating a mobile context for the mobile station; setting a value of an access reselection timer, wherein the mobile station is prevented from registering with the unlicensed radio access network before the access reselection timer expires; sending the value of the access reselection timer to the mobile station in a registration accept message; receiving a de-registration message from the mobile station; starting a context keep-alive timer, wherein a value of the context keep-alive timer is greater than the value of the access reselection timer; receiving by the access network controller another registration request message from the mobile station; noting that the mobile context already is created; stopping the context keep-alive timer; resetting the value of the access reselection timer; and sending the reset value of the access reselection timer to the mobile station in a second registration accept message.