Patent ID: 8514812

Claim:
A method for transitioning of a state machine after a radio access network (RAN) is reselected, comprising: generating first information when a mobile terminal reselects from a high rate packet data (HRPD) network to a long term evolution (LTE) network; setting, by a Signaling Adaptation Protocol (SAP) of the HRPD module air interface protocol, a TunnelModeEnabled parameter to a first identifier after receiving the first information, so that air interface related sub-protocols of an HRPD module know that the mobile terminal has reselected to the LTE network; and transitioning, by state machines of air interface related sub-protocols of the HRPD module, to a tunnel state; wherein the transitioning to the tunnel state comprising: generating, by the SAP or other HRPD module air interface protocols, second information; and receiving, by the air interface related sub-protocols of the HRPD module, the first information or the second information, and enabling the state machines to transition to the tunnel state.