A method, comprising: at a trusted wireless local area network access network receiving a request from a user device to establish a connection to a wireless local area network, the user device having an existing connection to a packet data network via a cellular network; at the trusted wireless local area network access network generating and transmitting an authentication request to a 3GPP server; at the trusted wireless local area network access network receiving an answer indicating communication between the trusted wireless local area network access network and a mobility management entity via a first interface is authorized, the mobility management entity being enabled to perform integrated cellular and wireless local area network communications; at the trusted wireless local area network access network generating and transmitting a request to create a session to the mobility management entity over the first interface, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the mobility management entity generating and transmitting a request to a serving gateway, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the serving gateway generating and transmitting a request to a packet data network gateway, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the serving gateway receiving a response from the packet data network gateway, the response comprising a network address previously allocated to the user device in connection with the existing connection to the packet data network via a cellular network; at the serving gateway transmitting the response to the mobility management entity; at the mobility management entity transmitting the response to the trusted wireless local area network access network over the first interface; and at the trusted wireless local area network access network generating and transmitting to the user device information indicating a connection has been established with the user device. at a trusted wireless local area network access network receiving a request from a user device to establish a connection to a wireless local area network, the user device having an existing connection to a packet data network via a cellular network; at the trusted wireless local area network access network generating and transmitting an authentication request to a 3GPP server; at the trusted wireless local area network access network receiving an answer indicating communication between the trusted wireless local area network access network and a mobility management entity via a first interface is authorized, the mobility management entity being enabled to perform integrated cellular and wireless local area network communications; at the trusted wireless local area network access network generating and transmitting a request to create a session to the mobility management entity over the first interface, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the mobility management entity generating and transmitting a request to a serving gateway, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the serving gateway generating and transmitting a request to a packet data network gateway, the request specifying to handover the existing connection to the packet data network via a cellular network to communication via the trusted wireless local area network access network; at the serving gateway receiving a response from the packet data network gateway, the response comprising a network address previously allocated to the user device in connection with the existing connection to the packet data network via a cellular network; at the serving gateway transmitting the response to the mobility management entity; at the mobility management entity transmitting the response to the trusted wireless local area network access network over the first interface; and at the trusted wireless local area network access network generating and transmitting to the user device information indicating a connection has been established with the user device.