Method of monitoring call state over single radio voice call continuity and related communication device
AssigneeHTC Corporation
InventorChih-Hsiang Wu
Life of this patent
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Abstract
A method of monitoring a call state over a single radio voice call continuity (SRVCC) handover, for a communication device in a wireless communication system is provided. The method includes performing, by a modem processor of the communication device, the SRVCC handover from a first type call to a second type call when an SRVCC handover command is received from a network of the wireless communication system, sending, by the modem processor, a first indication for notifying an occurrence of SRVCC handover to an application processor of the communication device, and monitoring, by the application processor, a call state of the second type maintained in the modem processor after the first indication is received.
Claims10
A method of monitoring a call state over a single radio voice call continuity (SRVCC) handover, for a communication device in a wireless communication system, comprising:
- performing, by a modem processor of the communication device, the SRVCC handover from a first type call to a second type call when an SRVCC handover command is received from a network of the wireless communication system;
- sending, by an application processor of the communication device, a query message to the modem processor to query the call state of the second type call;
- and
- sending, by the modem processor, a response message corresponding to the query message and containing the call state of the second type call, to the application processor after the SRVCC handover is performed successfully, wherein the call state is active, held, dialing, alerting, incoming or waiting;
- wherein the first type call is an Internet-Protocol Multimedia Subsystem (IMS) call and the second type call is a circuit-switched (CS) call, or the first type call is the CS call and the second type call is the IMS call.
A method of monitoring a call state over a single radio voice call continuity (SRVCC) handover, for a communication device in a wireless communication system, comprising:
- performing, by a modem processor of the communication device, handover from a first type call to a second type call when an SRVCC handover command is received from a network of the wireless communication system;
- sending, by the modem processor, a first indication for indicating a call state of the second type call to an application processor of the communication device after the SRVCC handover, wherein the call state is active, held, dialing, alerting, incoming or waiting;
- and
- sending, by the modem processor, a third indication for indicating the call state of the second type call to the application processor when the call state of the second type call changes;
- wherein the first type call is an Internet-Protocol Multimedia Subsystem (IMS) call and the second type call is a circuit-switched (CS) call, or the first type call is the CS call and the second type call is the IMS call.
A communication device in a communication system, adapted for monitoring a call state over a single radio voice call continuity (SRVCC) handover, comprising:
- a modem side;
- an application side;
- wherein the modem side comprises:
- a modem storage unit, for storing instructions of:
- performing handover from a first type call to a second type call when an SRVCC handover command is received from a network of the wireless communication system;
- sending a first indication for indicating a call state of the second type call to the application side after the SRVCC handover, wherein the call state is active, held, dialing, alerting, incoming or waiting;
- and
- sending a third indication for indicating the call state of the second type call to the application side when the call state of the second type call changes
- wherein the first type call is an Internet-Protocol Multimedia Subsystem (IMS) call and the second type call is a circuit-switched (CS) call, or the first type call is the CS call and the second type call is the IMS call;
- and
- a modem processor, coupled to the modem storage unit, configured to executed the instructions stored in the modem storage unit;
- wherein the application side comprises:
- an application storage unit, for storing instructions;
- an application processor, coupled to the application storage unit, configured to executed the instructions stored in the application storage unit.
Dependencies are inferred from the claim text.