KR101467388B1 - System and Method transmitting call setup message - Google Patents
System and Method transmitting call setup message Download PDFInfo
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- KR101467388B1 KR101467388B1 KR1020080077018A KR20080077018A KR101467388B1 KR 101467388 B1 KR101467388 B1 KR 101467388B1 KR 1020080077018 A KR1020080077018 A KR 1020080077018A KR 20080077018 A KR20080077018 A KR 20080077018A KR 101467388 B1 KR101467388 B1 KR 101467388B1
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Abstract
A call setup message providing system according to the present invention is a system for providing a call setup message in which a mobile terminal transmits an access probe including a call setup message to a radio network server through an access channel, A message providing system, wherein the mobile terminal divides the call setup message to include the divided call setup message in a first connection probe and a second connection probe, respectively, and transmits the first connection probe and the second connection probe And the wireless network server extracts the call setup message from the first connection probe and the second connection probe and establishes a call with the mobile terminal based on the call setup message.
Therefore, according to the present invention, since the size of a call setup message that can be transmitted through an access channel through two connection probes can be increased several times, a call setup message having a large capacity can be transmitted more easily.
SIP, call setup time, multiple connection probe, call setup message division transmission
Description
The present invention is applicable to CDMA20001x Rev. A network, and the like, thereby improving the call setup time.
More particularly, the present invention relates to a method for efficiently transmitting a SIP-based call setup message for a shorter call setup time in a Session Initiation Protocol (SIP) based mobile communication network.
That is, it is a technical field to transmit a call setup message having a larger capacity by transmitting a call setup message to an access channel by including it in a plurality of connection probes, thereby enabling quick call setup.
SIP is a protocol designed to allow a large number of people to easily invite parties to meetings or phone calls, rather than protocols for controlling users when making video conferences or telephone calls. SIP is not restricted to any protocol stack, but is easy to extend and easy to use because it is defined as text based on HTTP. SIP uses a conventional E-MAIL address and provides mobility through a location-specific message, so it is a simple protocol that can receive a call at a specified location.
The components are as follows.
A user agent (UA) is a terminal that can make and receive calls and supports SIP protocol functions. A user requesting a call is called a Usr Agent Client (UAC), a receiving side is called a User Agent Server (UAS) . The network server controls the SIP network. It acts as a gatekeeper of H.323. The type of the network server is a proxy server that handles the whole network, and a redirect server that guarantees the mobility of the user. It is a component for searching for a location that matches an address.
SIP provides two ways of connecting through a proxy server and a direct connection with the other party. The calling party uses the addressing method appropriate to the SIP to request the calling party to call the INVITE message. The address used in SIP can be roughly divided into three categories. First, you can use the network name of the user and the name of the host together with the ID that the user logs in as the SIP address. Second, the IP address itself can be used as a SIP address. Third, the e-mail address or the DNS name used in the homepage can be used as the SIP address. Now, the most specific thing is the existing e-mail address It is a way to use.
All messages in SIP are text based, and when delivering messages, multiple messages are sent by one TCP segment or UDP datagram using TCP or UDP. The size of the SIP data is defined so that data can be sent to a network that knows the MTU (Maximum Transmission Unit) without exceeding the MTU value, and to transmit data of 1 KByte or less for a network in which the MTU is unknown.
Currently, the initial SIP protocol is commonly used to provide IP-based services such as VoIP, video telephony, and PTT in the mobile communication network. SIP has a simple structure for opening an initial session than H.xxx (a protocol such as H.323) which is used in the mobile communication network in recent years.
There is an initial connection time (connection time) as a factor to be a performance problem in providing IP based services such as VoIP and video phone PTT service in mobile communication network. This may be a very important factor in determining the success of the service depending on the type of service, which is the time from when the caller calls the callee to make the call available. In the case of a specific service provider or a specific network, a method of transmitting a SIP message through an ACH is used to solve the problem. (Qualcomm's QCHAT method)
Among mobile communication network functions, there is a function of transmitting an SDB (Short Data Burst) message through an ACH (Access Channel). However, since the size of a message to be transmitted through an access channel is limited, It is very difficult to transmit. That is, due to the limited data size that can be transmitted on the access channel, the SIP initial message generally has a restriction to transmit through the access channel. One of the methods to solve this problem is to apply a compression function for a SIP message having a large size. However, depending on the mobile communication network or according to the standard, when the SIP signal compression function of about 60 to 80% is applied, it is difficult to see a great effect because it exceeds the data size that can be transmitted through the access channel.
FIG. 1 shows one type of SIP message provided by the Internet Engineering Task Force (IFTF) and its size. If signal compression is applied (50% ~ 75%), even if this signal compression is applied, it will be big size up to 600 bytes ~ 1200 Bye, which is a relatively large size for transmission on a general access channel or a shared channel There is still a problem of opening the traffic channel. In the case of the right table of FIG. 1, the signal compression of about 60% is applied, and the problem is that the size is still relatively large. It can be said that it has no effect on the setup time improvement.
Figure 2 shows an example of EV-DO Rev.A. In the case of 1xEV-DO Rev.A, when the maximum capacity size of the access channel is maximized, the SIP message capacity that can be transmitted through the access channel is 211 bytes or less. 1xEV-DO Rev. In order to transmit SIP messages (in particular, Invite, 180 Ringing messages) from the A to the access channel, the signal compression should be 85% or more. In this case, a different standard (Local Proprietary) should be used.
The size of a message that can be transmitted through an access channel is limited, and it is an object of the present invention to overcome the above limitation effectively.
That is, a method of including a call setup message of a large capacity in each of a plurality of connection probes, and continuously transmitting the call setup message through an access channel, thereby effectively transmitting a call setup message of a larger capacity, is provided. .
A call setup message providing system according to a first aspect of the present invention is a system in which a mobile terminal transmits an access probe including a call setup message to a radio network server through an access channel, Wherein the mobile terminal divides the call setup message to include the divided call setup message in a first connection probe and a second connection probe, respectively, and the first connection probe and the second connection probe, And the wireless network server extracts the call setup message from the first connection probe and the second connection probe and transmits the call setup message to the mobile terminal based on the call setup message, Make settings.
A mobile terminal for transmitting a call setup message according to a second aspect of the present invention includes a mobile terminal for transmitting a call setup message for establishing a call by transmitting a connection probe including a call setup message to the radio network server through an access channel, The mobile terminal divides the call setup message to include the divided call setup message in the first connection probe and the second connection probe, respectively, and transmits the first connection probe and the second connection probe to the access channel To the wireless network server.
Advantageously, the first connection probe does not include the call setup message and includes a connection request message, and the second connection probe includes the call setup message.
More preferably, the call setup message is based on a Session Initiation Protocol (SIP).
More preferably, the first connection probe includes information indicating the presence of the second connection probe.
More preferably, the first connection probe and the second connection probe are transmitted at the same transmission power.
A wireless network server for making a call according to a third aspect of the present invention is a wireless network server for receiving a connection probe including a call setup message on an access channel and setting up a call, A first connection probe and a second connection probe, each of which includes a first connection probe and a second connection probe, and extracts a call setup message from the first connection probe and the second connection probe.
Advantageously, the first connection probe does not include the call setup message and includes a connection request message, and the second connection probe includes the call setup message.
More preferably, the call setup message is based on a Session Initiation Protocol (SIP).
More preferably, the first connection probe includes information indicating the presence of the second connection probe.
More preferably, the first connection probe and the second connection probe are transmitted at the same transmission power.
A method for providing a call setup message according to a fourth aspect of the present invention is a method for providing a call setup message for a mobile terminal to transmit a connection probe including a call setup message to a wireless network server through an access channel, A first connection probe transmission step of dividing the call setup message into the connection channel and transmitting a first connection probe including the divided part; A second connection probe transmission step in which the mobile terminal transmits a second connection probe including the remainder of the divided call setup message to the connection channel; And the wireless network server extracting the call setup message from the first connection probe and the second connection probe and making a call setup with the mobile terminal based on the call setup message.
More preferably, the first connection probe transmission step is a step in which the mobile terminal transmits a first connection probe that does not include the call setup message and includes a connection request message, And a step of transmitting the call setup message including the call setup message.
More preferably, the call setup message is based on a Session Initiation Protocol (SIP).
More preferably, the first connection probe includes information indicating the presence of the second connection probe.
More preferably, the first connection probe and the second connection probe are transmitted at the same transmission power.
In a call setup message providing system according to a fifth aspect of the present invention, a mobile terminal transmits a connection probe including a call setup message to a wireless network server through an access channel, The terminal divides the call setup message according to the first standard and includes the divided call setup message in the first connection probe and the second probe respectively and transmits the first standard first connection probe and the second connection probe to the access channel To the wireless network server, and transmits to the wireless network server a third connection probe including a call setup message according to the second specification, and the wireless network server transmits the third connection probe to the first connection probe and the second connection probe, 1 standard and extracts a call setup message according to the second specification from the third connection probe Extraction, and of the first call setup message by the call set-up message or said second specification according to the first standard processes the one to establish a call.
A mobile terminal providing a call setup message according to a sixth aspect of the present invention is a terminal for transmitting a call setup message for establishing a call by transmitting a connection probe including a call setup message to a wireless network server through an access channel, The mobile terminal divides the call setup message according to the first standard and includes the divided call setup message in the first connection probe and the second connection probe, respectively, and transmits the first standard first connection probe and the second connection probe And transmits a third connection probe, which includes a call setup message according to the second specification, to the wireless network server.
Advantageously, the second connection probe transmits on a traffic channel.
A wireless network server for making a call according to a seventh aspect of the present invention is a wireless network server for receiving a connection probe including a call setup message on an access channel and setting up a call,
Wherein the network server receives a first connection probe and a second connection probe each including a divided call setup message of a first standard on the connection channel and transmits a call of a first specification from the first connection probe and the second connection probe, Extracts a setup message, receives a third connection probe including a call setup message according to a second specification, extracts a call setup message according to the second specification from the third connection probe, Setting message or the call setup message according to the second specification.
Advantageously, the second connection probe transmits on a traffic channel.
A method for providing a call setup message according to an eighth aspect of the present invention is a method for providing a call setup message in which a mobile terminal transmits a connection probe including a call setup message to an access network in a wireless network server, A first connection probe transmission step of dividing a call setup message according to a first specification into the connection channel and transmitting a first connection probe including the divided part; A second connection probe transmission step in which the mobile terminal transmits a second connection probe including the remainder of the divided call setup message to the connection channel; A third transmission step of transmitting a third connection probe including a call setup message according to a second standard to the wireless network server; And the wireless network server receives the first connection probe and the second connection probe on the connection channel and extracts a call setup message of the first specification from the first connection probe and the second connection probe, And a call setting step of setting a call by extracting a call setup message according to a second standard and processing either the call setup message according to the first standard or the call setup message according to the second standard.
Advantageously, the second connection probe transmits on a traffic channel.
According to the present invention, even when a call setup message is transmitted on an access channel, a call setup message having a larger capacity can be transmitted. That is, even when the traffic channel is opened, since a large capacity call setup message can be transmitted through the access channel, the call setup connection time can be minimized.
In addition, there is an advantage that it is not necessary to set the maximum capacity size that can be transmitted in the access channel to be excessively large.
Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 3 is a conceptual diagram of a call setup time reduction method according to the present invention.
And transmits a
And the second connection probe includes the remaining portion of the call setup message not included in the first connection probe. The wireless network server waits for reception of the second connection probe with reference to the information about the second connection probe contained in the first connection probe and extracts the call setup message from the first connection probe and the second connection probe. The wireless network server establishes a call using the extracted call setup message with the terminal.
In the wireless network server, the first connection probe and the second connection probe are appropriately combined to extract the original call setup message. The second connection probe transmit power is transmitted at the same power as the first connection probe to minimize the system's interference.
The first connection probe and the second connection probe spacing are minimized, preferably 128 slots.
FIG. 4 shows a conceptual diagram according to another embodiment of the call setup time reduction method according to the present invention.
And transmits a first connection probe not including the call setup message to the access channel. At this time, the
FIG. 5 illustrates signal transmission between components according to an embodiment of the present invention. 5 includes
FIG. 6 shows a signal flowchart of another embodiment including the above-described embodiment of the present invention, in which a call setup method using a call setup message of a plurality of standards is added.
The
After completing the setting of the traffic channel (S105), the terminal transmits a third connection probe including a call setup message according to the second specification.
That is, the first terminal attempts to transmit a SETUP message through the access channel. To this end, the call setup message is compressed to a size that can be transmitted on the access channel according to the first specification. The call setup message according to the first standard is compressed and the call setup message is divided and included in the first connection probe and the second connection probe.
In this process, the call setup is performed in the application layer and the traffic channel is set up simultaneously with the radio area call setup.
At this time, the terminal transmits a third connection probe including a call setup message according to the second specification to the network server as a traffic channel.
The first standard call setup message may be a signal-compressed call setup message according to a local standard, and may be a call setup message based on the second standard call setup standard Internet Engineering Task Force (IETF) RFC standard.
Due to such a configuration, if the first specification is supported by the system, only the response to the call setup message of the first specification is transmitted. If the second specification is supported by the system, The process is ignored and only the response to the call setup message of the second standard is transmitted.
The process of inquiring the location of the destination terminal in the IMS server using the location server and calling the destination using the IP is relatively long. In order to use the delay time with no response, a process of transmitting the second standard call setup message once more after traffic setting is added.
In the case where the system is implemented by the standard of the second standard and the call setup message compressed with the local standard of the first standard can not be decoded, the second standard call setup message is a normal message that can be processed by the system It is used. In this case, the local standard call setup message of the first standard transmitted in the initial call setup is ignored in the system.
Therefore, since a plurality of standard call setup messages can be transmitted, it is possible to set up a smooth call even when the standard is different, and therefore, a faster call setup becomes possible.
A call setup message providing system according to the present invention is a call setup message providing system in which a mobile terminal transmits a connection probe including a call setup message to a wireless network server through an access channel to set up a call, Message to divide the message and to include the divided call setup message in the first connection probe and the second connection probe, respectively, and transmit the first connection probe and the second connection probe to the radio access network with the access channel, The server extracts the call setup message from the first connection probe and the second connection probe and makes a call setup with the mobile terminal based on the call setup message,
It is possible to transmit a call setup message having a larger capacity even when the call setup message is transmitted on the access channel. That is, since the call setup can be performed even before the traffic channel is opened, it is possible to minimize the call setup connection time. In addition, there is an advantage that it is not necessary to set the maximum capacity size that can be transmitted in the access channel to be excessively large.
Therefore, the present invention enables communication services to be performed more effectively, which is industrially applicable to the field of communication industry.
1 shows the structure and capacity of a SIP message.
2 is a block diagram of an EV-DO Rev. A system SIP message.
3 shows a conceptual diagram of an embodiment according to the present invention.
4 shows a conceptual diagram of another embodiment according to the present invention.
5 is a flowchart of a method of providing a call setup message according to the present invention.
FIG. 6 shows a flowchart of another embodiment of a method for providing a call setup message according to the present invention.
DESCRIPTION OF THE EMBODIMENTS
100: mobile terminal 200: network server
300: IP multimedia subsystem (IMS)
310, 350: first connection probe
320: SIP message part
330, 370: Additional information
360: CR and RU information
410, 450: second connection probe
460: SIP message
Claims (23)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020080077018A KR101467388B1 (en) | 2008-08-06 | 2008-08-06 | System and Method transmitting call setup message |
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| KR1020080077018A KR101467388B1 (en) | 2008-08-06 | 2008-08-06 | System and Method transmitting call setup message |
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| KR20100018307A KR20100018307A (en) | 2010-02-17 |
| KR101467388B1 true KR101467388B1 (en) | 2014-12-01 |
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| KR1020080077018A KR101467388B1 (en) | 2008-08-06 | 2008-08-06 | System and Method transmitting call setup message |
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| KR101460007B1 (en) * | 2008-08-06 | 2014-11-20 | 에스케이텔레콤 주식회사 | System and Method making call setup using plural standard SIP message |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100437180B1 (en) * | 2001-12-26 | 2004-06-23 | 엘지전자 주식회사 | Apparatus and Method for parsing the SIP message and producing method there of |
| KR20040073717A (en) * | 2003-02-14 | 2004-08-21 | 삼성전자주식회사 | Apparatus and method for call control message redundancy in wireless soft-switch system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100437180B1 (en) * | 2001-12-26 | 2004-06-23 | 엘지전자 주식회사 | Apparatus and Method for parsing the SIP message and producing method there of |
| KR20040073717A (en) * | 2003-02-14 | 2004-08-21 | 삼성전자주식회사 | Apparatus and method for call control message redundancy in wireless soft-switch system |
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