Mobile communication method and mobile communication system
AssigneeNEC Corporation
InventorsKatsutoshi NISHIDA, Toshiyuki TAMURA
Life of this patent
Estimating the term…
Abstract
A mobile communication method according to the present invention includes the steps of: sending “INVITE” from a UE#1 to a P-CSCF/VATF in a visited network of the UE#1; sending “INVITE” from the P-CSCF/VATF to an IMS; and allocating, by the P-CSCF/VATF, an MGW#1 to the path for voice communications.
Claims4
A mobile communication method in a mobile communication system for SRVCC (Single Radio Voice Call Continuity) including a mobile station, a first radio access network that does not support circuit-switched communications, a second radio access network that supports the circuit-switched communications, a gateway within a serving network of the mobile station for switching a path for voice communications between the mobile station and a communication partner of the mobile station, from a path using the first radio access network, to a path using the second radio access network, and a control node within the serving network of the mobile station, the mobile communication method comprising:
- transmitting, by the mobile station, a registration request to the control node;
- transmitting, by the control node, a registration response to the mobile station;
- transmitting, by the mobile station, an INVITE signal to the control node;
- and
- determining, by the control node, whether to anchor the path for the voice communications based on SRVCC capability of the mobile station.
A mobile communication system for SRVCC (Single Radio Voice Call Continuity), the mobile communication system comprising:
- a mobile station;
- a first radio access network that does not support circuit-switched communications;
- a second radio access network that supports the circuit-switched communications;
- a gateway within a serving network of the mobile station for switching a path for voice communications between the mobile station and a communication partner of the mobile station, from a path using the first radio access network, to a path using the second radio access network;
- and
- a control node within the serving network of the mobile station, wherein
- the mobile station is configured to transmit a registration request to the control node,
- the control node is configured to transmit a registration response to the mobile station;
- the mobile station is configured to transmit an INVITE signal to the control node, and
- the control node is configured to determine whether to anchor the path for the voice communications based on SRVCC capability of the mobile station.
A communication method for a mobile station, comprising:
- transmitting a registration request to a control node within a serving network of the mobile station,
- receiving a registration response from the control node,
- transmitting an INVITE signal to the control node;
- and
- causing the control node to determine whether to anchor a path for voice communications between the mobile station and a communication partner of the mobile station in a gateway with in the serving network of the mobile station for switching the path from a path using a first radio access network that does not support circuit-switched communications, to a path using a second radio access network that supports the circuit-switched communications, for SRVCC (Single Radio Voice Call Continuity), based on SRVCC capability of the mobile station.
A mobile station, comprising:
- a memory storing instructions;
- and
- at least one processor configured to process the instructions to:
- transmit a registration request to a control node within a serving network of the mobile station,
- receive a registration response from the control node,
- transmit an INVITE signal to the control node, and
- cause the control node to determine whether to anchor a path for voice communications between the mobile station and a communication partner of the mobile station in a gateway with in the serving network of the mobile station for switching the path from a path using a first radio access network that does not support circuit-switched communications, to a path using a second radio access network that supports the circuit-switched communications, for SRVCC (Single Radio Voice Call Continuity), based on SRVCC capability of the mobile station.
Dependencies are inferred from the claim text.