Method and system for guaranteeing seamless session when replacing PoC terminal in PoC system
First Claim
1. A server method for guaranteeing a seamless session when replacing one of a plurality of terminals as a terminal communicating with a server by request of a particular user having the plurality of terminals, the method comprising the steps of:
- receiving a terminal replacement request message from a terminal requesting replacement, the terminal replacement request message for requesting replacement by a terminal to be replaced among the plurality of terminals;
transmitting, by the server, an INVITE message to the terminal to be replaced;
receiving a response message to the INVITE message from the terminal to be replaced;
transmitting media to the terminal to be replaced; and
transmitting a session termination request message to the terminal requesting replacement after connecting the session with the terminal to be replaced for transmitting the media to the terminal to be replaced,wherein the terminal replacement request message uses an SIP (Session Initiation Protocol) REFER message including at least one of a conference URI (Uniform Resource Identifier) of the session set as a Request URI and address information of the terminal to be replaced.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for guaranteeing a seamless session when replacing a PoC terminal in a PoC system is provided, in which a currently busy PoC client can be replaced in an existing busy PoC session using a PoC compliant client capable of connecting the PoC session, thereby preventing a transmitted media stream of the running PoC session from being lost when the PoC client is replaced. The method includes transmitting, by an arbitrary PoC user, a message for replacing a terminal from a user terminal to a session management server while maintaining the session; receiving, by the session management server, the replacement request message, and transmitting an INVITE message to a terminal to be replaced, or a target terminal; and receiving, by the target terminal, the INVITE message, and media through an existing session. In a situation where there is a need to replace the PoC terminal according to change of the media for the PoC call, request of mobility, etc. by the PoC user, the user is allowed to make a continuous call. Thus, it is possible to improve QoE of the user and expand the markets for the PoC terminal and its services.
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Citations
25 Claims
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1. A server method for guaranteeing a seamless session when replacing one of a plurality of terminals as a terminal communicating with a server by request of a particular user having the plurality of terminals, the method comprising the steps of:
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receiving a terminal replacement request message from a terminal requesting replacement, the terminal replacement request message for requesting replacement by a terminal to be replaced among the plurality of terminals; transmitting, by the server, an INVITE message to the terminal to be replaced; receiving a response message to the INVITE message from the terminal to be replaced; transmitting media to the terminal to be replaced; and transmitting a session termination request message to the terminal requesting replacement after connecting the session with the terminal to be replaced for transmitting the media to the terminal to be replaced, wherein the terminal replacement request message uses an SIP (Session Initiation Protocol) REFER message including at least one of a conference URI (Uniform Resource Identifier) of the session set as a Request URI and address information of the terminal to be replaced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A terminal requesting replacement method for guaranteeing a seamless session when replacing one of a plurality of terminals as a terminal communicating with a server by request of a particular user having the plurality of terminals, the method comprising the steps of:
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establishing, by a terminal requesting replacement, an established session with the server; transmitting a terminal replacement request message to a terminal to be replaced, the terminal replacement request message including a unique identity of the session and address information of the terminal to be replaced; transmitting, by the terminal to be replaced to the server, an INVITE message including information; receiving, by the terminal to be replaced from the server, a response message to the INVITE message; receiving, by the terminal to be replaced from the server through the established session, a media; and receiving, by the terminal requesting replacement, a session termination request message for terminating the established session with the terminal requesting replacement. - View Dependent Claims (10, 11, 12, 13)
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14. A server for guaranteeing a seamless session when replacing one of a plurality of terminals as a terminal communicating with the server by request of a particular user having the plurality of terminals, the server comprising:
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a device for receiving a terminal replacement request message from a terminal requesting replacement, the terminal replacement request message for requesting replacement by a terminal to be replaced among the plurality of terminals; a device for transmitting an INVITE message to the terminal to be replaced; a device for receiving a response message for the INVITE message from the terminal to be replaced or for receiving an INVITE message including information on an existing session from the terminal to be replaced; a device for transmitting media to the terminal to be replaced; and a device for transmitting a session termination request message to the terminal requesting replacement after connecting the session with the terminal to be replaced for transmitting the media to the terminal to be replaced, wherein the terminal replacement request message uses a Session Initiation Protocol (SIP) REFER message including at least one of a conference Uniform Resource Identifier (URI) of the session set as a Request URI and address information of the terminal to be replaced. - View Dependent Claims (15, 16, 17)
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18. A method of a terminal for guaranteeing a seamless session when replacing one of a plurality of terminals as a terminal communicating with a server by request of a particular user having the plurality of terminals, the method comprising the steps of:
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transmitting, by a terminal requesting replacement, a terminal replacement request message to the server; receiving, by terminal to be replaced from the server, a response to the terminal replacement request message; receiving, by the terminal to be replaced from the server, an INVITE message including information; transmitting, by the terminal to be replaced to the server, a response message to the INVITE message; receiving the media from the server; and receiving a session termination request message from the server after connecting the session with the terminal to be replaced for transmitting the media to the terminal to be replaced. - View Dependent Claims (19, 20, 21)
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22. A terminal for guaranteeing a seamless session when replacing one of a plurality of terminals as terminal communicating with a server by request of a particular user having the plurality of terminals, the terminal comprising:
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a device for establishing a session with the server; a device for transmitting a terminal replacement request message to a terminal to be replaced, the terminal replacement request message including a unique identity of the session and address information of the terminal to be replaced; a device for receiving the terminal replacement request message from a terminal requesting replacement; a device for transmitting, by the terminal to be replaced to the server, an INVITE message including information; a device for receiving, by the terminal to be replaced from the server, a response message of the INVITE message; and a device for receiving a session termination request message for terminating the session with the terminal requesting replacement. - View Dependent Claims (23, 24, 25)
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Specification