Communication Handovers from Networks Using Unlicensed Spectrum to Circuit-Switched Networks

摘要

Devices configured to initiate a handover of a communication session of a user device from an access network associated with unlicensed spectrum to a circuit-switched access network are described herein. The devices may provide a handover request to a server associated with the circuit-switched network, receive a response from the server indicating that the circuit-switched access network has been prepared for the handover, and instruct the user device connect to the circuit-switched access network to continue the communication session. The devices may initiate the handover responsive to measurement reports received from the user device. In some embodiments, the devices may also enable registration of the communication session, determine a session transfer number identifying a component of the telecommunication network which maintains continuity for the communication session, and provide that session transfer number to the server associated with the circuit-switched access network as part of the handover request.

主权项

1. A telecommunication network comprising:
a gateway device configured to initiate a handover of a communication session of a user device from an access network associated with unlicensed spectrum to a circuit-switched access network; a mobile switching center (MSC) server of the circuit-switched access network to receive a handover request for the handover of the communication session, to allocate circuit-switched access network resources for the communication session, and to initiate a session transfer; and an Internet Protocol (IP) messaging subsystem (IMS) configured to carry out the session transfer and provide continuity for the communication session, wherein the MSC server notifies the gateway device upon completion of the session transfer, and the gateway device instructs the user device to connect to the circuit-switched access network to continue the communication session.