KR20100018303A - System and method making call setup using plural standard sip message - Google Patents

Abstract

PURPOSE: A system and a method for setting a call using plural standard SIP(Session Initiation Protocol) messages are provided to transmit standard SIP messages to set a call, thereby processing an SIP message without respect to a supporting standard of a system. CONSTITUTION: A terminal(100) transmits an SIP message by the first standard to a network server(200). The terminal transmits an SIP message by the second standard to the network server. The network server processes one of the SIP messages by the first and second standards to set a call. The SIP messages are generated based on an SIP.

Description

System and method making call setup using plural standard SIP message}

The present invention relates to a CDMA20001x Rev. It is a field of technology for improving call setup time based on Session Initiation Protocol (SIP) such as VoIP or PTT by transmitting call setup messages in a communication network including A network.

That is, the present invention relates to a method of effectively transmitting a SIP message, which is a call setup message, for a faster call setup time in a mobile communication network using a SIP protocol.

In particular, in the case of a system according to the standards-based SIP method or a local proprietary method (Local Proprietary), which is a carrier-specific method, it is a technical field that can facilitate call setup.

SIP is a protocol designed to make it easier for multiple people to invite the other party to a conference or phone call, rather than to control the user when making a video conference or phone call. SIP is not tied to any protocol stack and is defined as text based such as HTTP, so it is easy to extend and easy to use. SIP uses a conventional E-MAIL address and provides mobility through location-specific messages, making it a simple protocol for receiving calls from a designated location.

The configuration components are as follows.

A user agent (UA) refers to a terminal that can make and receive calls and supports the SIP protocol. The call requesting side is called UAC (Usr Agent Client), and the receiving side is a UAS (User Agent Server). It is called. Network Server controls the SIP network and plays a role similar to the gatekeeper of H.323. The type of network server is a redirect server to guarantee the mobility of the entire proxy server. have. A register is a component required for a SIP user mobile terminal to register as part of a SIP network. The location server is a component for retrieving a location matching the address after checking the address in the SIP network.

SIP provides two ways of connecting via proxy server and direct connection with other party. The calling party requests the caller to call the INVITE message using the SIP addressing method. Looking at the addresses used in SIP can be classified into three categories. The first is that you can add the network name you use and the host name to the username you are logging in as and use it as the SIP address. The second one can use the IP address itself as the SIP address. The third one can use the e-mail address or the DNS name used on the homepage as the SIP address. The most specific one is the existing e-mail address. Is the way to use it.

All messages in SIP are text-based and multiple messages are sent by a single TCP segment or UDP datagram, using either TCP or UDP to deliver the message. The data size of SIP is defined so that data can be sent for networks that know the maximum transmission unit (MTU) without exceeding the value of MTU and data for 1KByte or less for networks where the MTU is unknown.

Currently, the initial SIP protocol is generally used to provide IP-based services such as VoIP, video telephony, and PTT in mobile communication networks. SIP has been used in recent years because it has a simple structure for opening an initial session than H.xxx (protocol such as H.323) used in the mobile communication network.

An initial connection time is a factor that may be a performance problem in providing IP-based services such as VoIP or video telephone PTT service in a mobile communication network. This is the time until the caller calls the caller and the call becomes available, which can be very important to determine the success of the service according to the type of service. In the case of a specific operator or a specific network, a SIP message is transmitted through an ACH (Access Channel) to solve this problem.

Among the mobile communication network functions, SDB (Short Data Burst) messages can be transmitted through the access channel. However, since the size of messages that can be transmitted through the access channel is limited, call establishment messages are generally transmitted through the access channel. It may be difficult. That is, due to the limited data size that can be transmitted in the access channel, call establishment messages generally have limitations in transmitting through the access channel. One way to solve this problem is to apply a compression function to a call establishment message having a large size. However, according to the mobile communication network or the standard specification, when the Signal Compression function of 60 to 80% of SIP messages is applied, it is difficult to see a large effect because it exceeds the data size that can be transmitted through the access channel. As a result, it takes a signal compression or message configuration applying a local property by a self-implementation method rather than a standard method. Since this is not an implementation based on a standard, there may be an issue such as roaming.

In order to effectively transmit a SIP message irrespective of a standard supported by the system, in the present invention, a call setup method capable of setting up a call by transmitting a call setup message of a plurality of standards so as to process a SIP message regardless of a supported standard of the system It is a problem to be solved by the present invention to provide such an object.

That is, an object of the present invention is to provide a method for setting up a call by using a call setting message according to any one standard by transmitting a call setting message of a first standard and a second standard.

In a call setup system using a multi-standard message according to the first aspect of the present invention, a call setup system using a multi-standard call setup message includes a terminal of a user and a network server connected to the user terminal to set up a call. The terminal transmits a call setup message according to a first standard to the network server, a call setup message according to a second standard to the network server, and the network server sends a call setup message according to the first standard. Alternatively, a call is established by processing any one of the call setup message according to the second standard.

A network server for setting up a call using a call setup message of a plurality of standards according to the second aspect of the present invention receives a call setup message according to a first standard and a call setup message according to the second standard, and receives the first standard. The call setup message is processed by either one of the call setup message and the call setup message according to the second standard.

Preferably, the call setup message according to the first standard and the call setup message according to the second standard may be based on a Session Initiation Protocol (SIP).

The terminal for setting up a call using the call setup message according to the third aspect of the present invention transmits the call setup message according to the first standard and the call setup message according to the second standard, and sends the call setup message to the call setup message according to the first standard. The call is set up based on a response received first of the response or the response to the call setup message according to the second standard.

Preferably, the call setup message may be characterized in that the SIP-based.

Preferably, the terminal transmits a call setup message according to the first standard on an access channel, and transmits a call setup message according to the second standard on a traffic channel. A terminal for setting up a call using a call setup message of a plurality of standards.

More preferably, the terminal may transmit a call setup message according to the first standard and a call setup message according to the second standard through an access channel.

A call setup method using a call setup message of a plurality of standards according to a fourth aspect of the present invention includes a first transmission step of transmitting, by a terminal, a call setup message according to a first standard to a network server; A second transmission step of transmitting, by the terminal, a call setup message according to a second standard to the network server; And a call setup step, wherein the network server processes any one of the call setup message according to the first standard or the call setup message according to the second standard to establish a call.

Preferably, the call setup message according to the first standard may be transmitted to a network server through an access channel, and the call setup message according to the second standard may be transmitted to the network server through a traffic channel. .

More preferably, the call setup message according to the first standard and the call setup message according to the second standard may be transmitted to a network server through an access channel.

Preferably, the call setup message may be characterized in that the SIP-based.

Some network service providers handle only call setup messages based on specific standards, and call setup messages based on other standards may not be processed. In this case, according to the present invention, the effect of more easily establishing a call in a system of any standard is achieved.

That is, for example, the terminal sets up a call by sending a call setup message according to a local standard on a local network, and sets up a call by sending a call setup message based on a standard on a standard network. Even if the call processing is not possible, call processing by the call setup message according to the standard can be performed.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a conceptual diagram of a call setup method using a call setup message of multiple standards according to the present invention.

The first terminal 100 transmits a call setup message of the first standard to the network server of the system through the access channel (S101). The network server 200 is connected to an IP multimedia subsystem 300. The network server transmits the call setup message to the IMS (S102), transmits an acknowledgment (AC Ack) to the terminal, and establishes a wireless traffic channel (S104).

After the setting of the traffic channel is completed (S105), the terminal transmits a call setup message according to the second standard.

That is, when an application using the Session Initiation Protocol (SIP) is started, the first terminal attempts to transmit a SIP message, which is a call setup message, through an access channel. To this end, the SIP message is compressed to a size that can be transmitted through the access channel. It uses its own specifications. That is, it transmits a signal compressed SIP invite message according to a local standard, which is a user standard. In this process, SIP processing is performed at the application layer and a traffic channel is established at the same time as the radio section call setup.

The paging response or the like is transmitted from the second terminal 500 to the first terminal 100. At this time, a response to the first standard call setup message or the second standard call setup message transmitted by the first terminal may be received according to the type of standard supported by the system.

If the system supports the first standard, only the response to the call setup message of the first standard is transmitted. If the system supports the second standard, the process related to the call setup message according to the first standard is ignored and Only a response to the call setup message of Part 2 is transmitted.

The first standard call setup message may be a signal compressed call setup message according to a local standard, or may be a call setup message based on the second standard call setup standard IETF (Internet Engineering Task Force) IEC RFC standard.

The call setup message of the first standard detects the location of the called terminal through IMS and transmits paging. However, the process of inquiring the location of the called terminal from the IMS server using the location server and calling the other party using IP is relatively long.

The second standard call setup message is transmitted once more after the traffic setup using the interval time without response.

If the system is implemented by a standard that is a second standard and cannot decode a call setup message that is signal compressed to a local standard that is a first standard, then the second standard call setup message is a normal message that the system can handle. It is used. In this case, the local standard call setup message of the first standard transmitted during initial call setup is ignored by the system.

A call setup system using a call setup message of multiple standards of the present invention includes a user's terminal and a network server.

The terminal transmits a call setup message according to a first standard to a network server, establishes a traffic channel, and transmits a call setup message according to a second standard to the network server.

The network server sets up a call by processing either a call setup message according to the first standard or a call setup message according to the second standard.

A call setup method using a call setup message of a plurality of standards according to the present invention includes the steps of: [a] a terminal transmitting a call setup message according to a first standard to a network server and setting up a traffic channel; [b] the terminal, transmitting a call setup message according to a second standard to the network server; [c] the network server processing the call setting message according to the first standard or the call setting message according to the second standard to establish a call.

Some network service providers handle only call setup messages based on specific standards, and call setup messages based on other standards may not be processed. In this case, according to the present invention, the effect of more easily establishing a call in a system of any standard is achieved.

Accordingly, the present invention has industrial applicability in the telecommunications industry.

3 shows a conceptual diagram of an embodiment according to the present invention.

<Description of main parts of drawing>

100 and 500: mobile terminal 200: network server

300: IMS (IP multimedia subsystem)

Claims (11)

In a call setup system using a call setup message of a plurality of standards including a terminal of the user and a network server connected to the user terminal to establish a call, The terminal transmits a call setup message according to a first standard to the network server, sends a call setup message according to a second standard to the network server, And the network server processes a call setup message according to the first standard or a call setup message according to the second standard to establish a call. Receives a call setup message according to the first standard and a call setup message according to the second standard, and sets up a call by processing any one of the call setup message according to the first standard and the call setup message according to the second standard. A network server that sets up a call using a call setup message of multiple standards. The method of claim 2, The call setup message according to the first standard and the call setup message according to the second standard are based on SIP (Session Initiation Protocol); a network for establishing a call using a call setup message of a plurality of standards. server. The call setup message according to the first standard and the call setup message according to the second standard are transmitted, and either the response to the call setup message according to the first standard or the response to the call setup message according to the second standard is first received. A terminal for setting up a call using a call setup message for setting up a call based on a response. The method of claim 4, wherein The call setup message is a terminal for establishing a call using a call setup message of a plurality of standards, characterized in that the SIP-based. The method of claim 4, wherein The terminal transmits a call setup message according to the first standard through an access channel, and transmits a call setup message according to the second standard through a traffic channel. A terminal that sets up a call using a setup message. The method of claim 4, wherein And the terminal transmits a call setup message according to the first standard and a call setup message according to the second standard through an access channel. A first transmission step of transmitting, by the terminal, a call setup message according to the first standard to a network server; A second transmission step of transmitting, by the terminal, a call setup message according to a second standard to the network server; And A call setup method using a call setup message of a plurality of standards comprising a call setup step of the network server to set up a call by processing either the call setup message according to the first standard or the call setup message according to the second standard. . The method of claim 8, The call setup message of the first standard is transmitted to the network server through the access channel, and the call setup message of the second standard is transmitted to the network server through the traffic channel. Call setup using. The method of claim 8, And a call setup message according to the first standard and a call setup message according to the second standard to a network server through an access channel. The method of claim 8, The call setup message is a call setup method using a call setup message of a plurality of standards, characterized in that the SIP.

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