Method for providing early-media service based on session initiation protocol
a technology of session initiation and media service, which is applied in the field of providing an early media service based on a session initiation protocol, can solve the problems of extremely wasteful circuit resources, limited media provided as a ring back tone to audio data, voice or music, etc., and achieve efficient and flexible session management and maximize the effect of circuit resources
Inactive Publication Date: 2009-10-08
SK TELECOM CO LTD
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Benefits of technology
[0010]In addition, another object of the present invention is to provide a method of providing an early media service based on back-to-back user agent (B2BUA) mode operation, in which an Internet protocol (IP) packet network based on SIP is used instead of a circuit network to thereby maximize efficiency of circuit resources.
[0011]Particularly, a further object of the present invention is to provide a method of providing an early media service, in which when the early media service is provided ii SIP based multimedia communication environment of a packet network, an early session for early media processing is used, and thus an originating terminal can receive and play back the early media regardless of regular session processing, thereby allowing efficient and flexible session management.
Problems solved by technology
However, although a variety of ring back tones based on the selection of a subscriber is provided instead of a conventional uniform ring back tone, media provided as a ring back tone are limited to audio data, such as a voice or music.
Therefore, there is a limitation in fulfilling further higher desire of a user of a mobile communication terminal that call implement high quality audio and video owing to recent development of mobile communication terminal techniques.
In additions the conventional early media service described above is a method using a circuit network, which has a problem in that due to the nature of the circuit network in which a circuit is exclusively used until a call connection is released, a circuit is exclusively used even when data is intermittently transmitted, and thus resources of the circuit is extremely wasted.
In addition, the conventional service method has a problem in that after an early service is provided, when the session is switched to another session to transmit and receive media to and from a counterpart terminal, the burden of a corresponding mobile communication terminal is heavy in the process of negotiating terminal capacity of a corresponding session and handling the session switch.
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[0018]Hereinafter, a method of providing an early media service based on SIP according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.
[0019]Before describing the present invention in detail, a session initiation protocol configuring the present invention will be described first. The session initiation protocol is a very simple text-based application layer control protocol, which is a signaling protocol that allows one or more participants to initiated update and terminate a session together. The session initiation protocol provides flexibility and extensibility, through which the session initiation protocol call be combined with many other protocols and create a variety of services. For example, information on a session is provided to an interesting group, and a counterpart who desires to talk is invited to participate in the session through the session initiation protocol. Thus, information on the type of media...
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The present invention relates to a method of providing an early media service based on a session initiation protocol (SIP), wherein early media of a multimedia form can be provided under SIP-based B2BUA mode operation. According to the present invention, in a case where early media are provided to an originating terminal when a call connection with a terminating terminal is established at the request of the originating terminal, the early media is provided in the form of multimedia data, such as text, image, moving image, flash animation and the like, as well as audio data, and thus users desires are fulfilled and users, satisfactions are maximized. In addition, with individual operation management of the terminating terminal and the originating terminal according to B2BUA mode operation based on the session initiation protocol and an early session initiation with the originating terminal, an early media service can be normally provided to the originating terminal even when the terminating terminal is in an abnormal operation state.
Description
TECHNICAL FIELD[0001]The present invention relates to a method of providing an early media service based on a session initiation protocol (SIP), and more particularly, to a method of providing an early media service based on SIP, wherein an application server and a media server can provide early media of a multimedia form, such as images, moving images and the like, as well as audios, using an early session or a regular session.BACKGROUND ART[0002]As mobile communication subscribers rapidly increase in number, service providers providing mobile communication services adopt a variety of additional services in order to attract customers and enhance quality of service for users, and provide an early media service, such as a ring back tone service, as one of such services.[0003]The early media service is a service for providing media instead of a dial tone to an originating terminal, from a point when a call connection is tried until a connection is established and a communication is st...
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Login to View More IPC IPC(8): H04L12/66H04M3/42
CPCH04M3/42017H04L65/1063H04L65/1006H04L65/1096H04L65/1069H04M3/42H04W80/10H04L65/1104
InventorCHOI, WOOYONGKIM, SUNGLEE, SANGYUN
OwnerSK TELECOM CO LTD