WO2014183654A1

WO2014183654A1 - Method for performing session based on sip, terminal and call service server

Info

Publication number: WO2014183654A1
Application number: PCT/CN2014/077563
Authority: WO
Inventors: 张继栋
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-09-22
Filing date: 2014-05-15
Publication date: 2014-11-20
Also published as: KR20160062081A; KR101831083B1; CN103716299B; CN103716299A

Abstract

The embodiments of the present invention provide a method for performing a session based on an SIP, and a terminal. The method comprises: a terminal establishing a transmission control protocol link or a user datagram protocol link with a call service server; when starting a session initiation protocol session, the terminal performing session initiation protocol registration; and when ending the session initiation protocol session, the terminal performing session initiation protocol cancellation. The embodiments of the present invention can effectively reduce the network bandwidth occupation, and particularly effectively reduce the requirements for the capacity and performance of devices such as an SBC, so as to reduce the invested costs of the devices.

Description

Method for using SIP to conduct session, terminal and call service server

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a call service server for performing a session based on a SIP (Session Initiation Protocol).

Background technique

With the rapid development of information technology and the rapid spread of the Internet, people's demand for communication is characterized by broadband, individualization and integration. The IP (Internet Protocol) and broadbandization of traditional communication networks based on circuit switching, and the realization of the goal of NGN (Next-Generation Network), is an inevitable trend in the development of telecommunication networks.

SIP (Session Initiation Protocol) is a core protocol in NGN networks and has a wide range of applications in various services based on NGN networks. For example, the most commonly used voice, video call, and multimedia conference services based on audio, video and data are based on the SIP protocol for session establishment and media negotiation. The session persistence feature of SIP itself determines that the SIP number online status requires more bandwidth and more high-capacity access gateways (such as SBC (Session Border Controller)).

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method for using a SIP-based session, a terminal, and a call service server to effectively reduce the occupation of network bandwidth.

In order to solve the above technical problem, an embodiment of the present invention provides a method for performing a session based on a session initial protocol, including:

The terminal establishes a transmission control protocol link or a user datagram protocol link with the call service server; when the terminal starts the session initial protocol session, the session initial protocol registration is performed, and after the registration is successful, the transmission control protocol link or the user datagram protocol link is used. Notifying the call service server.

Preferably, the foregoing method further has the following features: when the terminal starts a session initial protocol session, Perform session initial protocol registration, including:

When the terminal initiates a session initial protocol session request as a calling party, the terminal initiates a session initial protocol registration through the access gateway to the softswitch or the IP multimedia subsystem core network.

Preferably, the foregoing method further has the following features: when the terminal starts a session initial protocol session, performing session initial protocol registration, including:

After receiving the session initial protocol session request, the terminal initiates a session initial protocol registration through the access gateway to the softswitch or the IP multimedia subsystem core network, if receiving an instruction for the user to select to answer.

Preferably, the foregoing method further has the following features: After the terminal starts the session initial protocol session, the method further includes:

The terminal ends the session initial protocol session, performs the session initial protocol logout, and after the logout is successful, notifies the call service server by using the transmission control protocol link or the user datagram protocol link.

In order to solve the above problem, an embodiment of the present invention further provides a terminal, where the method includes: an establishing module, configured to establish a transmission control protocol link or a user datagram protocol link with a call service server;

The registration module is configured to start the session initial protocol session, and after the registration is successful, notify the call service server by using the transmission control protocol link or the user datagram protocol link.

Preferably, the terminal further has the following features:

The registration module is configured to initiate a session initial protocol registration to the softswitch or the IP multimedia subsystem core network through the access gateway when the caller initiates the session initial protocol session request.

Preferably, the terminal further has the following features:

The registration module is configured to, after receiving the session initial protocol session request, receive an initial protocol registration from the access gateway to the softswitch or the IP multimedia subsystem core network, if the user receives an instruction to select the answer.

Preferably, the terminal further has the following features: The terminal further includes: The logout module is configured to end the session initial protocol session, perform the session initial protocol logout, and after the logout is successful, notify the call service server by using the transmission control protocol link or the user datagram protocol link.

In order to solve the above problem, the embodiment of the present invention further provides a method for performing a session based on a session initiation protocol, including:

After the call service server signs up for registration, establish a transmission control protocol link or a user data report protocol link with the terminal;

After the call service server receives the session initial protocol registration successfully through the transmission control protocol link or the user datagram protocol link, the session initial protocol session processing is performed. .

Preferably, the foregoing method further has the following features: the call service server performs session initial protocol session processing, including:

The call service server receives the session initial protocol session request initiated by the terminal; queries the session initial protocol registration state and the idle state of the called terminal, and performs session processing according to the registration state and the idle state. Preferably, the foregoing method further has the following features: the call service server performs session processing according to the registration status and the idle state, and includes:

If the call service server queries that the called terminal is not in the session initial protocol registration and idle state, the called terminal is notified by the established transmission control protocol link or the user data protocol link. If the called terminal has been queried for the session initial protocol registration, the next initial call to the called terminal is used to register the session initial protocol number; if the called terminal is queried to process the busy state, The established transmission control protocol link or user datagram protocol link notifies the calling terminal.

Preferably, the foregoing method further has the following features: after the call service server notifies the called terminal that the call arrives, the method further includes:

If the call service server receives the notification that the called terminal sends a session initial protocol registration success, it records and calls the session initial protocol number that the called terminal registers successfully.

Preferably, the foregoing method further has the following features: after the recording and subscribing to the session initial protocol number that the called terminal successfully registers, the method further includes: If the call service server receives the session initial protocol cancellation notification of the calling terminal or the called terminal, the session initiation protocol number corresponding to the calling terminal or the called terminal is deleted.

In order to solve the above problem, the embodiment of the present invention further provides a call service server, including: an establishing module, configured to establish a transmission control protocol link or a user data report protocol link with the terminal after being set up for registration;

The processing module is configured to perform the session initial protocol session processing after the session initial protocol registration is successfully received through the transmission control protocol link or the user datagram protocol link.

Preferably, the above call service server further has the following features:

The processing module is configured to perform session initial protocol session processing, including: receiving a session initial protocol session request initiated by the terminal; querying a session initial protocol registration state and a busy state of the called terminal, according to the registration state and idle Busy state for session processing. Preferably, the above call service server further has the following features:

The processing module is configured to perform session processing according to the registration status and the free busy state, including: if the called terminal is in the absence of the session initial protocol registration and the idle state, by using the established transmission control protocol a link or a user datagram protocol link, notifying the called terminal that a call arrives; if the called terminal has queried the initial protocol registration, directly calling the session initial protocol number registered by the called terminal; If the called terminal is queried to process the busy state, the calling terminal is notified by the established transmission control protocol link or the user datagram protocol link.

Preferably, the above call service server further has the following features:

The processing module is further configured to notify the called terminal that after the call arrives: if receiving the notification that the called terminal sends the session initial protocol registration success, recording and calling the session that the called terminal registers successfully Initial agreement number.

The processing module is further configured to record and call the session initial protocol number after the called terminal is successfully registered: if the session initial protocol cancellation notification of the calling terminal or the called terminal is received, deleting the calling terminal or being The session initial protocol number corresponding to the terminal.

In summary, the embodiment of the present invention provides a method, a terminal, and a call industry for conducting a session based on SIP. Servers, effectively reducing network bandwidth usage, especially reducing the capacity and performance requirements of devices such as SBC to reduce equipment input costs.

BRIEF abstract

FIG. 1 is a flowchart of a method for performing a session based on SIP according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for performing a session based on SIP according to another embodiment of the present invention; FIG. 4 is a schematic diagram of a method for performing a session based on SIP according to an application example of the present invention; FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a call service server according to an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other without conflict.

FIG. 1 is a flowchart of a method for performing a session based on SIP according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment includes:

Sl l, the terminal establishes a TCP (Transmission Control Protocol) link or a UDP (User Datagram Protocol) link with the call service server;

S12. When the terminal starts the SIP session, perform SIP registration. After the registration is successful, notify the call service server by using the TCP link or the UDP link.

S13. When the terminal ends the SIP session, perform SIP logoff. After the logout is successful, the call service server is notified by using the TCP link or the UDP link.

FIG. 2 is a flowchart of a method for performing a session based on SIP according to another embodiment of the present invention. As shown in FIG. 2, the method in this embodiment includes:

521. After the call service server signs up for registration, establish a TCP link or a UDP link with the terminal.

522. The call service server receives the SIP registration through the TCP link or the UDP link. After the work, SIP session processing is performed.

In the method of this embodiment, when the SIP client needs to perform a SIP session with other terminals, the SIP registration is performed, and when the session ends, the SIP logout is performed immediately. When the SIP client is idle, you only need to establish a TCP (Transmission Control Protocol) link or UDP (User Datagram Protocol) with the call service server, and keep the heartbeat with a small TCP packet or UDP packet. That is, there is no need to register SIP at this time. In this way, when constructing a SIP-based multimedia call service system, most of the idle SIP clients do not need to maintain the SIP number registration status in real time, thereby greatly reducing the capacity and performance of the access gateway (for example, SBC). Claim.

The method of implementing this embodiment requires a set of call service servers and any smart terminal or computer with SIP client software installed, as shown in FIG.

The call service server registers with the softswitch or IMS (IP Multimedia Subsystem) core network and receives a TCP link or UDP link request from the SIP client.

The SIP client software runs on a smart terminal or a computer, and the smart terminal or computer has to have

The IP network connection capability, and the collection or playback device of the media used for the SIP session, such as a microphone, speaker or camera, the SIP client software always establishes a TCP link or UDP link with the call service server.

After the call service server and the SIP client software are installed and configured, the following solutions can be implemented. As shown in Figure 4, the following steps are included:

Step 101: The call service server signs up registration on the softswitch or the IMS core network; Step 102: The SIP client actively establishes a TCP link or a UDP link with the call service server; the calling and called SIP clients can initiate TCP to the call service server respectively. Chain or UDP link.

Step 103: When the SIP client prepares to initiate a SIP session as a calling party (that is, when the calling SIP client 1 initiates a call), first initiates a SIP registration to the softswitch or the IMS core network through the SBC;

Step 104: After the SIP registration is successful, the SIP client notifies the call service server that the SIP client is in a registered and busy state, and then initiates a SIP session invitation directly to the called party through the SIP link. After the calling SIP client 1 initiates the SIP registration, it notifies the call service server at the same time, the call service server records the SIP registration status of the calling SIP client 1, and sends a call request (INVITE) to the called SIP client.

This call request is routed to the call service server after passing through the SBC, softswitch or IMS core network. Step 105: If the SIP client is called, because the call service server is already in softswitch or

The IMS core network has signed up for registration, so the call request first arrives at the call service server. At this time, if the calling service server queries that the called SIP client is in the unregistered state and the idle state of the SIP number, the SIP client is notified by the previously established TCP link or UDP link that the call arrives; for example, the call service server queries The called SIP client is in the SIP number registered and idle state, and directly forwards the call request to the called SIP client; if the called SIP client is busy, the calling SIP client is notified.

The calling service server finds that the called SIP client 2 is not currently in the SIP number registration success state, so it notifies the called SIP client 2 whether to answer the incoming call.

Step 106: At this time, the SIP client 2 pops up the incoming call request. If the user chooses to answer the call, the SIP registration is first initiated to the softswitch or the IMS core network through the SBC, and the TCP link or UDP link notification that has been established before is still succeeded. The call service server SIP registration has succeeded and accepts the call request, and then proceeds to step 107.

If the user directly chooses to reject the incoming call, the call service server is directly notified by the previously established TCP link or UDP link to reject the incoming call, and subsequent SIP registration is not required.

Step 107: After the calling service server learns that the called SIP client 2 answers and completes the registration of the SIP number, the SIP client successfully registers the SIP number successfully registered by the SIP client, and the SIP client 2 automatically answers the call after receiving the SIP session request. The media negotiation is completed and the SIP session is successfully established.

Step 108: After the SIP session ends, the SIP client initiates a SIP logout to the softswitch or the IMS core network through the SBC. After successful, the SIP service client is notified that the SIP client is not registered and idle.

Regardless of whether the calling or called SIP client ends the SIP session, both parties initiate SIP deregistration to the softswitch or IMS core network through the SBC, and notify the calling service server to log off successfully after completion. FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 5, the terminal in this embodiment may include:

Establishing a module, configured to establish a transmission control protocol link or a user datagram protocol link with the call service server;

a registration module, configured to start a session initial protocol session, perform a session initial protocol registration, and after the registration is successful, notify the call service server by using the transmission control protocol link or a user datagram protocol link;

When the logout module is set to end the session initial protocol session, the session initial protocol is cancelled. After the logout is successful, the call service server is notified by the transmission control protocol link or the user datagram protocol link.

In a preferred embodiment, when the registration module is configured to start a session initial protocol session, the session initial protocol registration may include: when the calling party initiates a session initial protocol session request, the device controls the device to the softswitch or the IP through the session boundary. The multimedia subsystem core network initiates a session initial protocol registration.

In a preferred embodiment, when the registration module is configured to start a session initial protocol session, the session initial protocol registration may include: after receiving the incoming call request, if the user receives an instruction to select the answer, the session is passed. The border control device initiates a session initial protocol registration to the softswitch or IP Multimedia Subsystem core network.

FIG. 6 is a schematic diagram of a call service server according to an embodiment of the present invention. As shown in FIG. 6, the call service server in this embodiment includes:

Establish a module, set to sign up for registration, establish a transmission control protocol link or a user datagram protocol link with the terminal;

The processing module is configured to perform SIP session processing after successfully receiving the session initial protocol by using the transmission control protocol link or the user datagram protocol link.

The processing module, configured to perform the session initial protocol session processing, may include: receiving a session initial protocol session request initiated by the terminal; querying a session initial protocol registration state and a busy state of the called terminal, The registration status and the idle status are used for session processing.

The processing module is configured to perform a session according to the registration state and the free busy state. The method may include: if the called terminal is in the absence of the session initial protocol registration and the idle state, notify the called terminal that the called terminal arrives by using the established transmission control protocol link or the user datagram protocol link. If the called terminal has queried the session initial protocol registration, directly, the session initial protocol number that has been registered by the called terminal is directly called; if the called terminal is queried to process the busy state, the The established transmission control protocol link or user data protocol link informs the calling terminal.

The processing module is further configured to notify the called terminal that after the call arrives: if receiving the notification that the called terminal sends the session initial protocol registration success, recording and calling the called terminal to register successfully Session initial protocol number.

The processing module is further configured to record and call the session initial protocol number after the called terminal is successfully registered: if the session initial protocol cancellation notification of the calling terminal or the called terminal is received, deleting the calling terminal or being Call the SIP number corresponding to the terminal.

In the embodiment of the present invention, the SIP number is registered only when the SIP session is to be performed, and the SIP number is in the logout state at other times. In this way, when the call service system is set up, the performance and capacity requirements of the SBC can be greatly reduced, and the equipment input cost can be effectively saved. At the same time, the fact that fewer SIP numbers are registered also means lower IP network bandwidth usage, which is also directly effective for IP network operators to reduce equipment investment costs and reduce network load.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. Embodiments of the invention are not limited to any particular form of combination of hardware and software.

The above is only a preferred embodiment of the present invention, and of course, the present invention may be embodied in various other embodiments without departing from the spirit and scope of the embodiments of the present invention. One or more corresponding changes and modifications may be made in accordance with the embodiments of the present invention, but such changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability

The embodiments of the present invention provide a SIP-based session method, a terminal, and a call service server, which effectively reduce network bandwidth occupation, and in particular, effectively reduce the capacity and performance requirements of devices such as SBCs, so as to reduce equipment input costs.

Claims

claims

1. A method for conducting sessions based on session initialization protocol, including:

The terminal establishes a transmission control protocol link or a user datagram protocol link with the call service server; when the terminal starts a session initialization protocol session, it performs session initialization protocol registration. After successful registration, it passes the transmission control protocol link or user datagram protocol link. Notify the call service server.

2. The method of claim 1, wherein: when the terminal starts a session initialization protocol session, the terminal performs session initialization protocol registration, including:

When the terminal initiates a session initialization protocol session request as the caller, it initiates session initialization protocol registration to the softswitch or IP multimedia subsystem core network through the access gateway.

3. The method of claim 1, wherein: when the terminal starts a session initialization protocol session, the terminal performs session initialization protocol registration, including:

After receiving the session initialization protocol session request as the called party, the terminal initiates session initialization protocol registration to the softswitch or IP multimedia subsystem core network through the access gateway if it receives an instruction from the user to choose to answer.

4. The method according to any one of claims 1-3, wherein: after the terminal starts a session initialization protocol session, it further includes:

The terminal ends the session initialization protocol session, performs session initialization protocol logout, and after successful logout, notifies the call service server through the transmission control protocol link or the user datagram protocol link.

5. A terminal, including:

Establish a module and set it to establish a transmission control protocol link or a user datagram protocol link with the call service server;

The registration module is configured to perform session initial protocol registration when starting a session initialization protocol session. After successful registration, notify the call service server through the transmission control protocol link or the user datagram protocol link.

6. The terminal according to claim 5, wherein: The registration module, when set to start a session initialization protocol session, performs session initialization protocol registration including: when initiating a session initialization protocol session request as the caller, through the access gateway to the softswitch or

The IP multimedia subsystem core network initiates session initialization protocol registration.

7. The terminal as claimed in claim 5, wherein:

The registration module, when set to start a session initialization protocol session, performs session initialization protocol registration including: After receiving the session initialization protocol session request as the called party, if the user chooses to answer the instruction, then through the access gateway to the softswitch Or the IP multimedia subsystem core network initiates session initialization protocol registration.

8. The terminal according to any one of claims 5 to 7, wherein: the terminal further includes: a logout module, configured to end the session initialization protocol session, perform session initialization protocol logout, and after the logout is successful, use the transmission control The protocol link or user datagram protocol link notifies the call service server.

9. A method for conducting sessions based on session initialization protocol, including:

After the call service server is signed and registered, it establishes a transmission control protocol link or a user datagram protocol link with the terminal;

After receiving the successful session initialization protocol registration through the transmission control protocol link or the user datagram protocol link, the call service server performs session initialization protocol session processing.

10. The method of claim 9, wherein: the call service server performs session initialization protocol session processing, including:

The call service server receives the session initialization protocol session request initiated by the terminal; queries the session initialization protocol registration status and idle-busy status of the called terminal, and performs session processing according to the registration status and idle-busy status.

11. The method of claim 10, wherein: the call service server performs session processing according to the registration status and the idle/busy status, including:

If the call service server inquires that the called terminal is in an idle state without session initialization protocol registration, it will notify the called terminal through the established transmission control protocol link or user data protocol link. The call arrives; if it is found that the called terminal has been registered with the session initialization protocol and is idle, the call is made directly to the registered session initialization protocol number of the called terminal; If it is found that the called terminal is in a busy processing state, the calling terminal is notified through the established transmission control protocol link or user datagram protocol link.

12. The method of claim 11, wherein: after the calling service server notifies the called terminal that a call has arrived, it further includes:

If the call service server receives a notification that the session initialization protocol registration is successful from the called terminal, it records and calls the session initialization protocol number of the called terminal that is successfully registered.

13. The method of claim 12, wherein: after recording and calling the session initialization protocol number for which the called terminal has successfully registered, the method further includes:

If the call service server receives a session initialization protocol logout notification from the calling terminal or the called terminal, it deletes the session initialization protocol number corresponding to the calling terminal or the called terminal.

14. A call service server, including:

Establish a module, set it to sign and register, and establish a transmission control protocol link or user datagram protocol link with the terminal;

The processing module is configured to perform session initialization protocol session processing after receiving successful registration of the session initialization protocol through the transmission control protocol link or the user datagram protocol link.

15. The call service server as claimed in claim 14, wherein:

The processing module is configured to perform session initialization protocol session processing including: receiving a session initialization protocol session request initiated by the terminal; querying the session initialization protocol registration status and idle/busy status of the called terminal, and based on the registration status and idleness status. Busy status for session processing.

16. The call service server as claimed in claim 15, wherein:

The processing module is configured to perform session processing according to the registration status and idle/busy status, including: If it is found that the called terminal is in the session initialization protocol registration and idle status, use the established transmission control protocol link or user datagram protocol link to notify the called terminal that a call has arrived; if it is found that the called terminal has registered the session initialization protocol, the called terminal will directly call the registered session initialization protocol number; If it is found that the called terminal is in a busy state, the calling terminal is notified through the established transmission control protocol link or user datagram protocol link.

17. The call service server as claimed in claim 16, wherein: The processing module is further configured to notify the called terminal that after a call arrives: if a notification of successful session initialization protocol registration is received from the called terminal, record and place a call to the session in which the called terminal has successfully registered. Initial agreement number.

18. The call service server as claimed in claim 17, wherein:

The processing module is also configured to record and call the session initialization protocol number of the called terminal that has been successfully registered. If a session initialization protocol deregistration notification from the calling terminal or the called terminal is received, delete the calling terminal or the called terminal. Call the session initialization protocol number corresponding to the terminal.