Method and system for call set-up between mobile communication terminals
First Claim
Patent Images
1. A method for a call set-up between mobile communication terminals, comprising steps of:
- receiving a signaling message for a call set-up with a call-incoming terminal from a call-originating terminal through short data burst (SDB);
setting up a traffic channel of the call-originating terminal depending on a first origination signal sent by the call-originating terminal after transmitting the signaling message;
receiving a response message of the call-incoming terminal to the signaling message; and
setting up a traffic channel of the call-incoming terminal depending on a second origination signal sent by the call-incoming terminal after transmitting the response message,wherein the signaling message is a binary session initiation protocol (SIP) message comprising information about Method (MT), Application ID (AP), and Service Type (ST) for Push-To-Talk session,wherein the step of setting up the traffic channel of the call-originating terminal comprises;
receiving the first origination signal from the call-originating terminal;
converting the binary SIP message received from the call-originating terminal into a standard full SIP message by a proxy server managing the call-originating terminal; and
routing the standard full SIP message to a group talk server (GTS), andwherein the step of receiving the response message of the call-incoming terminal further comprises converting the response message from a standard full SIP type into a binary SIP type if the call-originating terminal is in a dormant state.
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Abstract
A method and system for a call set-up in a mobile communication terminal perform a call set-up using a binary Session Initiation Protocol (SIP) message of short data burst, instead of using a general traffic channel, when a call is set up between the mobile communication terminals on the basis of the SIP. Consequently, it is possible to minimize a delay time required for the call set-up between the mobile communication terminals for providing an SIP signaling protocol service.
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Citations
11 Claims
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1. A method for a call set-up between mobile communication terminals, comprising steps of:
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receiving a signaling message for a call set-up with a call-incoming terminal from a call-originating terminal through short data burst (SDB); setting up a traffic channel of the call-originating terminal depending on a first origination signal sent by the call-originating terminal after transmitting the signaling message; receiving a response message of the call-incoming terminal to the signaling message; and setting up a traffic channel of the call-incoming terminal depending on a second origination signal sent by the call-incoming terminal after transmitting the response message, wherein the signaling message is a binary session initiation protocol (SIP) message comprising information about Method (MT), Application ID (AP), and Service Type (ST) for Push-To-Talk session, wherein the step of setting up the traffic channel of the call-originating terminal comprises; receiving the first origination signal from the call-originating terminal; converting the binary SIP message received from the call-originating terminal into a standard full SIP message by a proxy server managing the call-originating terminal; and routing the standard full SIP message to a group talk server (GTS), and wherein the step of receiving the response message of the call-incoming terminal further comprises converting the response message from a standard full SIP type into a binary SIP type if the call-originating terminal is in a dormant state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for a call set-up between mobile communication terminals, comprising:
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a call-originating base station and first proxy server to receive a signaling message for a call set-up with a call-incoming terminal from a call-originating terminal, to receive a first origination signal for a set-up of a traffic channel from the call-originating terminal after receiving the signaling message, and to set up the traffic channel of the call-originating terminal depending on the first origination signal; a call-incoming base station and second proxy server to transmit the signaling message to the call-incoming terminal, to receive a response message to the signaling message from the call-incoming terminal, to receive a second origination signal for a set-up of a traffic channel from the call-incoming terminal after receiving the response message, and to set up the traffic channel of the call-incoming terminal depending on the second origination signal; and a group talk server (GTS) to intermediate between the call-originating base station and first proxy server and the call-incoming base station and second proxy server, and to transmit/receive the signaling message and the response message, wherein the signaling message transmitted from the call-originating terminal is a binary session initiation protocol (SIP) message comprising information about Method (MT), Application ID (AP), and Service Type (ST) for Push-To-Talk session, the first proxy server converts the binary SIP message sent from the call-originating terminal into a standard full SIP message, and then transmits the standard full SIP message to the GTS, and wherein the first proxy server converts the response message of the call-incoming terminal from a standard full SIP type into a binary SIP type if the call-originating terminal is in a dormant state. - View Dependent Claims (10, 11)
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Specification