CN1298146C - Method for notifying busy status to session initiating protocol network from end user - Google Patents

Abstract

A method for a terminal user to notify a busy state to a SIP network, which at least includes the following steps: Step 1: the user logs in to the network, and initiates a registration that includes his own busy information to a SIP registration server; Step 2: when the user and When other users have a conversation process or finish talking with other users, the user all refreshes its terminal address and busy/idle state information; the embodiment of the present invention explains that by extending the REGISTER request message of the SIP protocol (also can be based on the same principle) , expand other headers, such as INFO request message), realize the method of notifying the user's busy state information to the SIP network, and the SIP network can realize the centralized management of the state information of the network user, which is convenient for the provision and development of communication network services .

Description

Method for end user to notify session initiation protocol network of busy status

Technical field:

The present invention relates to a method for transmitting information of a communication device, in particular to a method for notifying an intelligent terminal of a communication system of its busy status to a Session Initiation Protocol (SIP) network.

Background technique:

In the operating environment of the IP communication network, SIP terminal users in the network need to periodically register with the SIP registration server; the registration information only includes valid address-related information of the terminal users. The registration server registers the user information in the database in the format of <user name, user address> pairs, and starts a refresh timer to refresh user information regularly. If the user does not refresh his registration information within the specified time, his valid address content will be discarded.

If a user has registered to go online, other users on the network can search the user's <username, user address> mapping list through the SIP proxy server (Proxy) on the network. After the proxy server finds the effective address of the called user through the user name field, it forwards the session establishment request (INVITE) to realize the final call. When the called user is in another session (CALL), the called user rejects the request and notifies the calling user that he is in a "busy" state. The calling user hangs up after receiving the final answer. Because there is no corresponding mechanism for the called user to return the called user's busy or idle status information to the calling user, when the called user is always in the "busy" situation, the calling user has to try repeatedly until the called user idle, or the calling user gives up voluntarily. This situation is not only present in ordinary calls, but also causes problems in many services. For example, in the click-to-dial (Click to dial) service, if the first called user is busy, the service may not be connected directly, or the calling user makes repeated attempts according to the configuration information, which will generate a large number of requests on the network packets, resulting in low efficiency and low session completion rate.

Invention content:

The main purpose of the present invention is to provide a method for a terminal user to notify the SIP network of the busy status, so that the SIP network server and its users can obtain the status information of any other user on the network in time, and on this basis, other users can be notified. User The current state of the user.

The purpose of the present invention is achieved like this:

A method for an end user to notify a session initiation protocol network of a busy state, which at least includes the following processes:

Step 1: The user logs in to the network, and initiates a registration to the SIP registration server with his busy/busy information;

Step 2: When the user has a conversation with other users or completes the conversation with other users, the user refreshes the busy status information;

The above step 1 specifically includes the following operations:

Dial up through the point-to-point communication protocol or directly boot into the broadband network and log in to the physical network;

Register with the registration server and log in to the business network through the user name and password provided by the service provider;

Wherein, the registration content includes the user's busy/busy registration information.

The users mentioned above all refresh their busy status information; specifically include:

When the user has a session with other users, the user immediately initiates a new registration refresh process after entering the session connection state, and the refreshed content is the terminal address and busy status information of the user;

When the user finishes talking with other users, the user initiates a new registration refresh process again, and the refreshed content is the terminal address and idle state information.

The method further includes: when the user receives a session invitation message from the third user while the user is in the process of talking, sending back rejection response information according to the normal flow of the SIP protocol.

When the third user sends a session invitation and receives a response of rejection due to busyness, follow the steps below:

The third user sends a subscription (SUBSCRIBE) request to the service server, and indicates that this is a service in which the subscriber is busy or idle;

The business server receives the request, processes it accordingly, and sends a success (OK) response;

The invited user ends the previous session, sends a busy state refresh message (REGISTER message) to the SIP registration server, and sets his state as ' idle 'state; the registration server sets the corresponding bit segment in the database;

The service server detects the change of the state of the invited user, and notifies the third user of the occurrence of the asynchronous event with a notification (NOTIFY) message, and the third user returns an OK response;

The third user immediately sends a new session invitation (INVITE) request to the invited user.

The content of the request message body sent by the third user to the service server is a predetermined service, the format of the message body is in XML format, and the message body carries corresponding service information.

The method for the terminal user to notify the busy state to the session initiation protocol network provided by the present invention enables the SIP network server and its users to obtain the state information of any other user on the network in a timely manner, and on this basis, can notify other users of the user current state of .

Description of drawings:

Fig. 1 is a block diagram of the registration and refreshing process of a communication network SIP user according to an embodiment of the present invention.

Fig. 2 is a flow chart of service reservation and event notification of service users according to another embodiment of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Example 1:

Referring to FIG. 1 , it is an embodiment of the present invention, a registration process of user A of a communication network based on an intelligent terminal; wherein, the final called user is called A, and the service user is called B.

Step 1 User A logs in to the network

User A logs in to the network in two steps:

1. Log in to the physical network (via PPP dial-up software or directly boot into the broadband network);

2. Log in to the service network (register with the registration server through the user name and password provided by the service provider). The above registration information is also added with the user's busy registration information: Status: idle.

Note that step 2 requires adding a new Status header to the registration request method (REGISTER).

After receiving the registration request, the SIP registration server sets the corresponding flag to 0 (idle) in the column of the effective address record of the user in the database.

Step 2 User A refreshes his registration information

When user A enters the session state with other users, user A immediately updates his registration information to the SIP registration server.

The above registration information is also added with the user's busy registration information: Status: busy.

The SIP registration server sets the corresponding flag to 1 (busy) in the database.

Step 3 User A refreshes his registration information

After user A completes the call, he sends a registration refresh message to the SIP registration server again to refresh his status information.

At this time, the user's busy registration information Status: idle.

The SIP registration server sets the corresponding flag to 0 (idle) in the database.

Step 4 During the call, user A receives other session invitation messages.

If user A receives a session invitation message from another user during the call, it will return a rejection response according to the normal process of the SIP protocol.

Example 2

Referring to FIG. 2 , it is another embodiment of the present invention, which is the process of scheduling an event and receiving an event notification message for user B of a communication network based on a smart terminal.

For reservation request (SUBSCRIBE) and notification request (NOTIFY), refer to the Internet network rfc (Request for comment) document: sip-events-03.txt (SIP-Specific EventNotification). This rfc document defines related extensions that support asynchronous information notification in the SIP network framework. In particular, it defines two new request methods: SUBSCRIBE request is used for customization of asynchronous events, and NOTIFY request is used for notification after detection of asynchronous events.

Step 1 User B logs in to the network

Step 2 User B talks to user A

User B invites User A to conduct a session; but User A is in the process of another session (returning a session rejection response); User B sends a SUBSCRIBE request to the service server, and the content of the request message body is a predetermined service, and the message body format adopts the PARLAY message body , and indicate that this is a service that prescribes whether the user is busy or not; the service server receives the request, processes it accordingly, and sends an OK response.

Step 3 User A changes from 'busy' to 'free'

User A ends the previous session, sends a REGISTER message to the SIP registration server, and sets his status as 'idle'; the registration server sets the corresponding bit in the database.

Step 4 User B gets user A's state switching information

The service server detects the change of user A's status, and notifies user B of the occurrence of the asynchronous event with a NOTIFY message; user B returns an OK response.

Step 5 User B and user A realize the call

User B immediately sends a new invitation (INVITE) request to user A. Since user A is 'idle', both parties enter the session connection phase, and the conversation succeeds at last (this process is a SIP standard session connection process).

Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions described in the present invention; therefore, although the specification has described the present invention in detail with reference to the above embodiments, ordinary people in the art The skilled person should understand that the present invention can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (6)

1, a kind of method of notifying busy status to session initiating protocol network from end user is characterized in that: which comprises at least following processing:

Step 1: user's logging in network, and initiate to carry the registration that comprises the own not busy information of doing to the Session initiation Protocol registration server;

Step 2: as this user and conversation procedure takes place other users or when finishing with other user's communications, this usefulness refreshes busy-idle condition information per family, and be stored in the Session initiation Protocol registration server in the network.

2, the method for notifying busy status to session initiating protocol network from end user according to claim 1 is characterized in that: step 1 specifically comprises following operation:

Enter broadband networks by PPP(Point to Point Protocol) dialing or direct start, login physical network;

By the username and password that the service provider provides,, login business network to the registration server registration;

Wherein, include user's busy not busy register information in this register content.

3, the method for notifying busy status to session initiating protocol network from end user according to claim 1 is characterized in that: described usefulness refreshes its busy-idle condition information per family, specifically comprises:

When conversation procedure took place for this user and other users, this user initiated a new registration refresh process to the Session initiation Protocol registration server after entering the session connection state immediately, and the content that refreshes is for this user place terminal address and put busy condition information;

When this user and other user's communications finish, this user initiates a new registration refresh process to the Session initiation Protocol registration server once more, and the content that refreshes is the place terminal address and puts not busy state information.

4, the method for notifying busy status to session initiating protocol network from end user according to claim 1, it is characterized in that: this method also further comprises: when the user receives the 3rd user's session invitation message during just at communication process, then by the Session Initiation Protocol normal flow loopback information that rejects response.

5, the method for notifying busy status to session initiating protocol network from end user according to claim 4 is characterized in that: after the 3rd user sends session invitation, when receiving because of busy rejecing response, then carry out as follows:

The 3rd user sends predetermined request to service server, and to indicate this be the busy not busy business of a predesignated subscriber;

Service server is received this request, carries out respective handling, and sends success response;

Invited user finishes a last session, sends the busy-idle condition refresh message to the SIP registration server, and oneself state is made as ' spare time ' state; Registration server is provided with corresponding position section in the database;

Service server detects the variation of invited user state, and with the generation of notification message to the 3rd this asynchronous event of user notification, the 3rd user returns success response;

The 3rd user sends a new session invitation request to invited user immediately.

6, the method for notifying busy status to session initiating protocol network from end user according to claim 5, it is characterized in that: the 3rd user is predetermined business to the request message body content that service server sends, this message body is the extending mark language form, carries corresponding business information in the message body.

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