CN101516019A

CN101516019A - Terminal selection admission or method, device and system for controlling the terminal selection admission

Info

Publication number: CN101516019A
Application number: CNA2009101293795A
Authority: CN
Inventors: 曾建洪
Original assignee: Shenzhen Huawei Communication Technologies Co Ltd
Current assignee: Huawei Device Shenzhen Co Ltd
Priority date: 2009-03-24
Filing date: 2009-03-24
Publication date: 2009-08-26
Also published as: WO2010108404A1

Abstract

The embodiment of the invention relates to a method for terminal selection admission, a method for controlling the terminal admission, a access server, a terminal device, a medium control server and a system for terminal selection admission. The method for terminal selection admission includes steps of obtaining all conference information which can be joined by the terminal or all conference information which can be subscribed by the terminal; selecting conference identification of conference needed to join or subscribe in the all conference information which can be joined or subscribed by the terminal; and initiating conference access call to the selected conference identification. The method solves problem that the terminal can not selectively join a conference, and increases free degree of admission for the terminal. The users can join different conferences on their own responsibility and can reasonably arrange the different conferences.

Description

Terminal selection admission or control terminal are selected method, equipment and the system of affiliation

Technical field

The present invention relates to multimedia technology field, particularly relate to a kind of method of terminal selection admission, the system that control terminal is selected method, access server, terminal equipment, media control server and the terminal selection admission of affiliation.

Background technology

Along with the continuous development of modern enterprise, more and more enterprises is ready to select multimedia conference system to hold the multi-medium video-signal meeting.Generally, multimedia conference system comprises management server, access server, some media control server (with MCU, Multipoint Control Unit, H.323 the multipoint control unit in the agreement is an example) and terminal; Management server, can define need conference participation from the meeting-place, also can the conference setup resource.A terminal can participate in a plurality of meetings constantly in difference, but can only participate in a meeting at synchronization.If a terminal needs conference participation, can realize by the mode of call-conference number, also can pass through the mode that management server calls out with known meeting number corresponding meeting-place and realize.

Generally, terminals joining the conference can be realized by dual mode:

A kind of mode is: terminals joining the conference is realized by the mode of call-conference.Terminal need be known meeting number in advance.The mode of the mode that terminal is obtained meeting number is generally the conference convening person passed through before meeting is held artificial or mail is notified the participant terminal, and the process of terminal conference participation (being the process of terminals joining the conference) is:

Terminal is sent request to access server after learning the meeting that will join number, asks the media control server address at called meeting place; Access server is resolved this media control server address, the address in the meeting number corresponding meeting-place that acquisition and terminal are learned, i.e. destination address; After access server is resolved successfully, return correct destination address to this terminal, terminal is directly sent call request to the media control server of this destination address correspondence, after this media control server is received call request, answering call after verification is legal, allows this terminals joining the conference.

The defective of this mode is that terminal can only not selected the chance of affiliation according to the meeting of knowing in advance number affiliation, has limited the freedom of terminals joining the conference; And then because terminal needs to obtain meeting number through manual type, efficient is low, occurs careless mistake easily.

Another kind of mode is: terminal need not to know participant meeting number, but terminal call special service number (abbreviation: shortcode), it is corresponding which conference number that access server is discerned this shortcode, terminal will be directed into the meeting of corresponding appointment, that is to say,, be responsible for resolving meeting number according to this shortcode by access server at endpoint registration behind access server, the automatic guiding terminal of access server enters preassigned meeting.The defective of this mode is that terminal is inducted into meeting by access server, does not select the freedom of affiliation.

In research and practice process to prior art, the present inventor finds, in the existing implementation, has following defective at least: terminal is not selected the right of affiliation before affiliation, can only enter the appointment meeting according to prearranging; And then, at some extraordinary meeting, when any terminal all can be joined, because terminal before affiliation, is not understood the meeting of having no way of selecting whether to enter to Session Topic information.

Summary of the invention

The embodiment of the invention provides a kind of system of method, access server, terminal equipment, media control server and terminal selection admission of method, control terminal affiliation of terminal selection admission, solve terminal and can't select the problem of joining, thereby changed the situation that terminals joining the conference can't be selected.

For solving the problems of the technologies described above, the present invention is the method that embodiment provides a kind of terminal selection admission, comprising:

Obtain all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to;

From all conferencing informations that described all conferencing informations that can participate in maybe can be subscribed to, select to need to participate in or subscribe to the meeting identification of meeting;

Initiate meeting to the meeting identification of described selection and insert calling.

Correspondingly, the embodiment of the invention provides a kind of terminal equipment, comprising:

Acquiring unit is used to obtain all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to;

Selected cell is used for getting access to all conferencing informations that all conferencing informations that terminal can participate in maybe can subscribe to from described acquiring unit and selects needs to participate in or the meeting identification of subscription meeting;

Calling unit, the meeting identification that is used for selecting according to described selected cell is initiated meeting and is inserted calling.

Correspondingly, the embodiment of the invention provides a kind of control terminal to select the method for affiliation, comprising:

The request message that receiving terminal sends, described request message comprises: all conferencing informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to;

Obtain all conferencing informations that all conferencing informations that terminal can participate in or terminal can be subscribed to according to described request message from management server;

Send request response to described terminal, the described request response message comprises: all conferencing informations that all conferencing informations that terminal can be participated in or terminal can be subscribed to.

Correspondingly, the embodiment of the invention provides a kind of access server, comprising:

Receiving element is used for the request message that receiving terminal sends, and described request message comprises: all meeting modification informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to;

Acquiring unit is used for obtaining all conferencing informations that terminal can participate in or the conferencing information that can subscribe to according to described request message from management server;

Transmitting element is used for sending response message to described terminal, and described response message comprises: all conferencing informations that terminal can be participated in or the conferencing information that can subscribe to.

Correspondingly, the embodiment of the invention provides a kind of media control server, comprise: access server, be used for the request message that receiving terminal sends, described request message comprises: all meeting modification informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to; And obtain all conferencing informations that terminal can participate in or the conferencing information that can subscribe to from management server according to described request message; Send response message to described terminal, described response message comprises: all conferencing informations that terminal can be participated in or the conferencing information that can subscribe to.

Correspondingly, the embodiment of the invention provides a kind of system of terminal selection admission, comprising: terminal equipment, access server and management server, wherein,

Described terminal equipment, be used for sending a request message to access server, described request message comprises: all conferencing informations that all conferencing informations that terminal need be participated in or needs are subscribed to, and receiving access server transmission response message, described response message comprises all conferencing informations that terminal can be participated in or all conferencing informations that can subscribe to; And the meeting identification that selection really need participate in a conference from all conferencing informations that all conferencing informations that described terminal can be participated in maybe can be subscribed to; And initiate meeting to the meeting identification that described selection really need participate in a conference and insert calling;

Described access server is used for the request message that receiving terminal sends, and obtains all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to according to described request message from management server; And to described terminal transmission request response, described response message comprises: all conferencing informations that terminal can be participated in or all conferencing informations that can subscribe to;

Described management server is used to access server that all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to are provided.

By such scheme as can be known, the embodiment of the invention is by obtain terminal all the list of conference information that can participate in or the list of conference modification information that can subscribe to, and select really to need to participate in or subscribe to the meeting identification (such as meeting number etc.) of meeting, when having solved terminals joining the conference, can't select to participate in the problem of which kind of meeting, promptly solve terminal and can't select the problem of joining, present embodiment has improved the degree of freedom of terminals joining the conference, the user can independently select to enter different meetings, is convenient to the user different meetings is rationally arranged.

Description of drawings

Fig. 1 is the flow chart of the method for terminal selection admission in the embodiment of the invention 1;

Fig. 2 is the particular flow sheet of the method for terminal selection admission in the embodiment of the invention 2;

Fig. 3 is the particular flow sheet of the method for terminal selection admission in the embodiment of the invention 3;

Fig. 4 is the particular flow sheet of the method for terminal selection admission in the embodiment of the invention 4;

Fig. 5 is the particular flow sheet of the method for terminal selection admission in the embodiment of the invention 5;

Fig. 6 is the flow chart that control terminal is selected the method for affiliation in the embodiment of the invention 6;

The structural representation of the access server that Fig. 7 provides for the embodiment of the invention 7;

The another kind of structural representation of the access server that Fig. 8 provides for the embodiment of the invention 7;

The structural representation of the terminal equipment that Fig. 9 provides for the embodiment of the invention 8;

The another kind of structural representation of the terminal equipment that Figure 10 provides for the embodiment of the invention 8;

The structural representation of the media control server that Figure 11 provides for the embodiment of the invention 9;

The structural representation of the system that the meeting that Figure 12 provides for the embodiment of the invention 10 inserts.

Embodiment

Below we will be in conjunction with the accompanying drawings, optimum implementation of the present invention is described in detail.

See also Fig. 1, for a kind of flow chart of method of terminal selection admission is provided in the embodiment of the invention 1, described method comprises:

Step 101: obtain all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to;

Step 102: the meeting identification (, but being not limited to this) of from all conferencing informations that described all conferencing informations that can participate in maybe can be subscribed to, select to need participating in or subscribe to meeting such as meeting number;

Step 103: terminal is initiated meeting to the meeting identification of described selection and is inserted calling.

Wherein, describedly obtain all list of conference information that terminal can participate in or all the list of conference information that can subscribe to specifically comprise: obtain all list of conference information that terminal can participate in or all the list of conference information that can subscribe to by the content of carrying in the nonstandard field.

The specific implementation process of the described method of present embodiment sees following concrete Application Example for details.

See also Fig. 2, particular flow sheet for the method for the terminal selection admission that provides in the embodiment of the invention 2, in the present embodiment, access server is with gatekeeper GK (Gatekeeper, the equipment in the management h323 territory of H.323 stipulating in the agreement, abbreviate GK or gatekeeper as) be example, terminal, GK and media control server are (such as MCU, but be not limited to this, down with) between the three adopting H.323 agreement (International Telecommunication Association is about the suggestion of packet multimedia communication system), terminal is an example with all list of conference information of obtaining this terminal and can participating in, terminal and media control server all are registered on the GK, its concrete implementation procedure comprises as shown in Figure 2:

Step 201, terminal is sent to GK and is inserted request (ARQ, Admission Request) message, that is to say, terminal is called out GK by shortcode, send ARQ message to GK, all conferencing informations that carried terminal need participate in this ARQ message, all conferencing informations that terminal need participate in comprise meeting that terminal can conference participation number, the information such as theme that can also comprise meeting, described meeting number and information thereof pass through to insert that identification field realizes in the nonstandard field of ARQ, its specific implementation process sees for details following.To step 202.

Step 202, GK receives terminal by after the calling of shortcode, sends shortcode to management server (such as the conference management platform, but be not limited to this, down with), and the terminal that requires inquiry to make a call all conferencing informations that can participate in, to step 203.

Step 203, management server receive shortcode, determine termination number (promptly determining the calling number of terminal) according to shortcode according to shortcode, then according to termination number, all conferencing informations that can participate in the current management server queries terminal corresponding with termination number, to step 204, wherein, the meeting of the inquiry of management server comprises:

(1) all comprise the meeting of the termination number that makes a call;

(2) all anonymous meetings of terminals joining the conference without limits.

Step 204, management server feed back to GK with the conferencing information of finding according to certain form, to step 205.

Step 205, GK receive this conferencing information, difference according to the meeting number that comprises in the conferencing information, selection is back to meeting information the type of message of terminal, the type of message here can be admission confirm (ACF, Admission Confirm) message or admission reject (ARJ, Admission Reject) message or other H323 message:

(1) when the meeting number is 0, promptly corresponding meeting with termination number, when also not having anonymous meeting, GK replys this terminal ARJ message, and informing does not have meeting to exist, and refuses the request for conference of this terminal, process ends;

(2) when the meeting number is 1, promptly corresponding with termination number meeting has only one, GK directly resolves the meeting of carrying in this conferencing information number, obtain the network address (present embodiment is an example with the IP address of MCU) of this meeting place media control server, then, GK passes through ACF message the IP address of this meeting place MCU is fed back to terminal, to step 209;

(3) when the meeting number greater than 1 the time, promptly corresponding with termination number meeting has two when above, GK is according to certain nonstandard form, can pass through ARJ or other H323 signaling message meeting information is fed back to terminal with the form of tabulating, be that GK is back to terminal with the meeting list information, to step 206.

Step 206, terminal receive the list of conference information that GK returns, show this list of conference information, promptly terminal shows the various conferencing informations that receive, and optionally display mode is WEB mode or television interfaces mode, the user can select suitable meeting number according to the needs of oneself, to step 207.

Step 207, terminal send meeting that the user selected number to GK, to step 28;

The meeting that step 208, GK receiving terminal send number, resolve the network address (present embodiment is an example with the IP address of MCU) of media control server at the meeting place of this meeting correspondence, GK passes through ACF message the IP address of this meeting place MCU is fed back to terminal, to step 209;

Step 209, terminal receive the network flow address (present embodiment is an example with the IP address) of this media control server, according to the IP address of this media control server make a call and this media control server mutual, after being proved to be successful, insert the meeting-place, finish affiliation, get final product conference participation.

More than the technical scheme of method of the terminals joining the conference that provides for the invention process 2, in this technical scheme, carrying all conferencing informations and the shortcode that need inquiry terminal to participate in realizes by the nonstandard field in ARQ message, that is to say, nonstandard protocol extension explanation between GK and the terminal: according to realization flow, nonstandard agreement between GK and the terminal comprises: terminal is initiated to need to increase nonstandard field (all conferencing informations that terminal can participate in are obtained in statement) in the ARQ message that shortcode calls out, and ARJ or other H323 message that GK returns to terminal need increase nonstandard field (carrying all list of conference information that this terminal can be consulted).Following mask body is introduced its implementation:

At first, learn about the particular content of the nonstandard field in the ARQ message.

With reference to the H225 agreement about long-range access service (RAS, Remote Access Service) (to comprise ARQ message, ACF message and ARJ message is example to message, but be not limited to this) the content of nonstandard field, define nonstandard field with NonStandardParameter, wherein, H323 is a framework agreement, it specifically is the regulation interaction flow, and H225 is the concrete H323 message field of definition, such as ARQ, application for registration (RRQ, Registration Request), and the regulation field how to fill in.Concrete define program is:

NonStandardParameter::＝SEQUENCE

{

nonStandardIdentifier NonStandardIdentifier，

data OCTET STRING

}

Wherein, the define program of NonStandardIdentifier is:

NonStandardIdentifier::＝CHOICE

{

object OBJECT IDENTIFIER，

h221NonStandard H221NonStandard，

...

}

Wherein the define program of H221NonStandard is:

H221NonStandard::＝SEQUENCE

{t35CountryCode INTEGER(0..255)，

t35Extension INTEGER(0..255)，

manufacturerCodeINTEGER(0..65535)，

...

}

In this embodiment, nonstandard field defines with nonStandardidentifier in the ARQ message, nonStandardidentifier adopts the H221NonStandard form, content among the H221NonStandard is: t35ContryCode=0x26, t35Extension=0x00, manufacturerCode=0xt011.

Employing＜TLV〉form is filled in the content of H221NonStandard, but the data field is specifically filled out method reference table 1.Wherein T is a message identifier, and L is a message-length, and V is the message value, and described message value is, request message interior with, conferencing information etc.

Data defines with OctetString in the nonstandard field in the ARJ message, and basic format is with ARQ message, the form employing＜TLV of specifying information〉form, but specifically fill out method reference table 2.

All conferencing informations that terminal can participate in occur in the mode of list of conference information, list of conference information can comprise: the meeting number is meeting number, the meeting title of meeting number, each meeting, subject information, zero-time and the concluding time etc. of meeting, and the user can oneself want the meeting that participates in a conference number according to this list of conference Information Selection.But the form reference table 3 of list of conference information.

The contents list of table 1:H221NonStandard

The contents list of table 2:OctetString

Table 3: list of conference information

Project

Explanation of field

The remarks explanation

Conferencing information

The meeting number, (2 bytes) meeting 1 total information length, (2 bytes) meeting 1 meeting length, the meeting of (1 byte) meeting No. 1, the meeting title length of (n byte) meeting 1, the meeting title of (1 byte) meeting 1, the zero-time of (n byte) meeting 1, the concluding time of (4 bytes) meeting 1, the subject information length of (4 bytes) meeting 1, the subject information of (2 bytes) meeting 1, (n byte) ... the subject information of meeting N, (n byte)

If the length of corresponding certain field is 0, the corresponding field of then representing the back does not exist, can skip the coding of this field information, for example: the meeting title length of meeting 1 is 0, represent that then there is not the meeting title in meeting 1, then can skip the coding of meeting name field, carry out the coding of zero-time of the meeting 1 of back.

Also see also Fig. 3, flow chart for the method for terminal selection admission in the embodiment of the invention 3, in the present embodiment, adopt SIP (Session Initiation Protocol, conversation initialized protocol) agreement, access server is example with the sip server, between terminal, sip server and the media control server three to adopt Session Initiation Protocol, terminal is an example with all list of conference information of obtaining this terminal and can participating in, terminal and media control server all are registered on the GK, concrete implementation procedure comprises as shown in Figure 3:

Step 301, terminal is by shortcode or unified resource identifier (URI, Uniform ResourceIdentifier) address sends INFO to sip server, carry all conferencing informations that need inquiry terminal to participate in the INFO, these information that INFO carries realize by insert nonstandard field in the BODY of INFO field, the definition of nonstandard field can be with reference to the definition of nonstandard field in the ARQ message in the INFO, specific implementation is existing detailed description the in detail in embodiment 2, do not repeat them here.

Step 302, sip server are replied 200ok to terminal, and the INFO that expression has received terminal and sent is to step 303.

Step 303, sip server is forwarded to management server with shortcode, and the terminal that requires inquiry to make a call all conferencing informations that can participate in, to step 304.

Step 304, management server receives shortcode, determine termination number (promptly determining the calling number of terminal) according to shortcode according to shortcode, then according to termination number, all conferencing informations that can participate in the current management server queries terminal corresponding with termination number, to step 305, wherein, the inquiry of management server is according to being:

(1) all comprise the meeting of the termination number that makes a call;

(2) all anonymous meetings of terminals joining the conference without limits.

Step 305, management server feeds back to sip server with the conferencing information of finding according to certain form, to step 306.

Step 306, sip server receive this conferencing information, with the INFO form meeting information are back to terminal, to step 307;

Step 307, terminal receive the list of conference information that sip server returns, show this list of conference information, be that terminal shows the various conferencing informations receive, optionally display mode is WEB mode or television interfaces mode, and the user can be according to the suitable meeting of own needs selection number;

Step 308, terminal are returned 200ok to sip server;

Step 309, terminal send meeting that the user selected number to sip server, can send the meeting selected number by inviting, to step 310;

The meeting that step 310, sip server receiving terminal send number, resolve the network address (present embodiment is an example with the IP address of MCU) of media control server at the meeting place of this meeting correspondence, sip server sends to this media control server and invites (INVITE) message, to step 311;

Step 311, media control server receive this INVITE, respond sip server 200ok message, to step 312;

After step 312, sip server receive the 200ok message of media control server response, carry the successful 200ok message of affiliation to the terminal feedback, to step 313;

Step 313, terminal carry out finishing follow-up calling procedure alternately with this media control server after receiving the 200ok message of sip server feedback.

In this embodiment, step 302 and step 303 do not have sequencing, and step 308 and step 309 do not have sequencing yet.

Need to prove, when adopting Session Initiation Protocol to realize session in the present embodiment, also can adopt other sip message to replace INFO to realize corresponding function, such as OPTION message etc., soon the nonstandard field in the BODY message body of OPTION message is inserted all conferencing informations that terminal can be participated in; In like manner, insert all list of conference information that the terminal in the BODY message body can be participated in the nonstandard field in the OPTION message BODY message body of sip server feedback.Its process that realized is similar, does not repeat them here.In addition, also can encode, insert all list of conference information that all conferencing informations that terminal can participate in or terminal can be participated in also can the nonstandard field behind coding for nonstandard field.

Certainly, being not limited to use INFO or OPTION message to realize all list of conference information of asking and return terminal to participate in the present embodiment, also can be other message.

Also see also Fig. 4, particular flow sheet for the method for terminal selection admission in the embodiment of the invention 4, in the present embodiment, access server is an example with gatekeeper GK, to adopt H.323 agreement, terminal is an example with the list of conference modification information that can subscribe between terminal, GK and the media control server three, and terminal and media control server all are registered on the GK, its concrete implementation procedure comprises as shown in Figure 4:

Step 401, terminal sends the register requirement rrq message to GK and subscribes to all conferencing informations, the process of described subscription also can realize by other H323 signaling, present embodiment does not limit, carry all list of conference information that terminal need be subscribed in this rrq message, all list of conference information that described terminal need be subscribed to can identification field realizes by inserting in the nonstandard field of RRQ or certain H323 signaling, and its specific implementation process sees for details following, to step 402;

Wherein, in this step, it is heavyweight RRQ that terminal sends rrq message to access server, that is to say, each H323 terminal when access server is registered, all can send heavyweight RRQ registration earlier, after succeeding in registration for the first time, send lightweight RRQ (being step 405) in the cycle, its objective is to inserting the report oneself of clothes server still online.Heavyweight RRQ is with the difference of lightweight RRQ: the keepAlive field value that it carries is different, if the keepAlive field value is TRUE, then is lightweight RRQ, if the keepAlive field value is to be FALSE, then is heavyweight RRQ.

Step 402 after GK receives the subscribe request of terminal, knows that terminal wishes to subscribe to all conferencing informations, promptly transmits this subscribe request to management server, to step 403;

Step 403, management server receive this subscribe request, registration sends the termination number of subscribe request, examine, respond GK simultaneously and subscribe to result's (comprise subscribes to successfully or fail), as if subscribing to successfully, then management server is inquired about the conferencing information that this terminal can relate to according to termination number, and write down these conferencing informations, then these conferencing informations are fed back to GK according to certain form, to step 404

Wherein, in this step, the inquiry of management server according to and process with embodiment 2, do not repeat them here, when these conferencing informations change, change etc. such as the time of attending a meeting, to step 406;

Behind the subscription result of step 404, GK receiving management server feedback (comprising success or failure), should subscribe to the result and send to terminal, and can send by RCF message, and certainly, can send by other message yet, present embodiment does not limit.

Step 405, terminal regularly send the lightweight rrq message to GK and register, and described lightweight RRQ is that terminal periodic ground sends to sip server, and purpose is to inform that this terminal of sip server is still online, and sip server can be communicated by letter with it;

In addition, regularly send in the lightweight rrq message to GK in terminal, also can revise the solicited message of the meeting that cancels subscriptions, its concrete process of carrying sees following table 5 for details.

Step 406, when list of conference information changes, management server upgrades the list of conference information of this terminal subscribes, to step 407;

Step 407, management server send to GK with the meeting modification information of tabulating; To step 408;

Step 408, GK is transmitted to terminal with the list of conference modification information that receives, and can pass through the RCF forwards, certainly, also can be that present embodiment does not limit by other message, to step 409;

Step 409, terminal receive the list of conference modification information of GK feedback, and the user selects the meeting that oneself will participate in, and determine its meeting number, to step 410;

Wherein, terminal shows this conferencing information after receiving the conferencing information that GK returns, and promptly terminal shows the various conferencing informations that receive, and optionally display mode is WEB mode or television interfaces mode, and the user can be according to the suitable meeting of own needs selection number.

Meeting that step 410, terminal are determined according to the user number or URI initiate the ARQ call request to GK, to step 411;

Step 411, GK resolves according to the meeting of determining number, obtains the network address (present embodiment is an example with the IP address of MCU) of place, the meeting-place media control server of this meeting correspondence, the IP address of this media control server is back to terminal, to step 412;

Wherein, the meeting of determining number can be the user when terminal is selected meeting, definite meeting number also can be only to comprise a meeting number in the list of conference modification information of the management server feedback that receives of GK;

Step 412, terminal according to the IP address of this media control server, carry out finishing follow-up calling procedure alternately with corresponding media control server after receiving the IP address of the media control server that GK returns, and can insert the meeting-place, conference participation.

In this embodiment, step 405 and step 406 do not have sequencing.

Among this embodiment, the H323 signaling that uses or the definition of H323 message can be with reference to the definition of the nonstandard field in RRQ or certain the H323 signaling, during specific implementation, difference according to message, the setting of data field is also different, and in the signaling of carrying subscribe request, the data field is provided with according to table 4; In the signaling of carrying the request of cancelling subscriptions, the data field is provided with according to table 5; For carrying in the signaling of subscribing to the result, the data field is provided with according to table 6.Wherein, in the table 6, the setting of " subscription result " field is referring to table 7.Need to prove that this kind set-up mode is a kind of embodiment of the present invention, be not used for limiting the present invention.

Table 4

Table 5

Table 6

Table 7

Project	Explanation of field	The remarks explanation
Project	Explanation of field	The remarks explanation	Subscribe to the result	The result (success: 1, failure: 0, totally 2 bytes) refresh cycle (2 byte)	Refresh cycle, acquiescence 30s

Among this embodiment, the nonstandard definition of conferencing information during specific implementation, need be inserted the content of meeting subscription information in the nonstandard field of RRQ, RCF or certain H323 signaling according to definition, perhaps inserts in the nonstandard field behind the coding.

It should be noted that, this embodiment can use rrq message to realize, also can use NSM message to realize subscribe request, and the conferencing information of acquisition subscription, and be not limited to this two H323 type of messages, can also adopt other type of message, realize subscribe request, carry out the technical scheme of this embodiment.

Also see also Fig. 5, particular flow sheet for the method for terminal selection admission in the embodiment of the invention 5, in this embodiment, adopt Session Initiation Protocol to realize subscribing to conferencing information, promptly in embodiment 4, request message is realized subscribing to conferencing information by the signaling in the Session Initiation Protocol, and the specific implementation flow process comprises as shown in Figure 5:

Step 501, terminal sends SUBSCRIBE message or other H323 signaling to sip server, subscribe to conferencing information, carry terminal in this SUBSCRIBE message and need subscribe to all conferencing informations, identification field realizes all conferencing informations of this subscription by inserting in the nonstandard field of SIP signaling, its specific implementation process sees for details above-mentioned, does not repeat them here, to step 502;

After step 502, sip server are received the request of subscription conferencing information of terminal, know that terminal wishes to subscribe to conferencing information, promptly transmit the asking of this subscription conferencing information, to step 503 to management server;

Step 503, management server receives the request of this subscription conferencing information, registration sends the termination number of subscribe request, and the terminal of subscribing to conferencing information carried out authentication, result according to authentication, the responds SIP server is subscribed to the result and (is comprised and subscribe to successfully or fail, present embodiment is successfully being example), if subscribe to successfully, then management server is inquired about the related conferencing information of this terminal according to termination number, and writes down these conferencing informations, these conferencing informations are fed back to sip server according to certain form, to step 504, at this, the inquiry of management server foundation is with embodiment 3, when these conferencing informations change, to step 506;

The conferencing information of step 504, sip server receiving management server feedback, can be according to the difference of the meeting number that comprises in the conferencing information, selection is back to the type of message of terminal with meeting information, and the type of message here is 200ok (subscribing to successfully) message or 4xx (subscribing to failure) message or other sip messages.

Such as, greater than 1 o'clock, sip server was replied 200ok message to terminal as if the meeting number, and the conferencing information that simultaneously management server is forwarded to sip server feeds back to terminal, if the meeting number is 1 o'clock, sip server is replied 200ok message to terminal; If the meeting number is 0 o'clock, sip server is replied 4xx message to terminal, process ends; The conferencing information that sip server also can directly feed back management server is forwarded to terminal, terminal receives the conferencing information of sip server feedback, display conference information, the user selects the meeting that oneself will participate in view of the above, determine its meeting number, wherein, behind the conferencing information that terminal reception sip server returns, show this conferencing information, be that terminal shows the various conferencing informations that receive, optionally display mode is WEB mode or television interfaces mode, and the user can be according to the suitable meeting of own needs selection number.

Step 505, when conferencing information changed, management server upgraded the list of conference modification information, to step 506;

Step 506, the list of conference lastest imformation after management server will upgrade is sent to sip server, makes sip server can in time notify the terminal of these conferencing informations of subscription to upgrade the conferencing information of subscribing to, to step 507;

Step 507, the list of conference modification information after the renewal that sip server will receive is sent to terminal, can send terminal by NOTIFY, but be not limited to this, to step 508;

Step 508, terminal is selected meeting number according to the list of conference lastest imformation that receives; To step 509;

The meeting that step 509, terminal are determined according to the user number is initiated the INVITE call request to sip server, really need promptly to initiate the calling of the meeting of calling out number again, to step 510;

Step 510, the meeting that sip server makes a call according to terminal number is resolved, and obtains the network address (present embodiment is an example with the IP address of MCU) of place, the meeting-place media control server of this meeting correspondence, according to the corresponding media control server of this IP address call, to step 511;

Wherein, the meeting of determining number can be the user when terminal is selected meeting, definite meeting number also can be to select a meeting number in the list of conference lastest imformation of the management server feedback that receives of sip server;

After the INVITE that step 511, the media control server corresponding with the IP address receive the transmission of sip server calls out, reply 200ok message, be proved to be successful, to step 512 to sip server;

After step 512, sip server are received the 200ok message of media control server answer, reply 200ok message (promptly joining successfully) to terminal, to step 513;

Step 513, terminal carries out finishing follow-up calling procedure alternately with corresponding media control server, and promptly terminal can insert meeting-place, conference participation.

Accordingly, a kind of control terminal that the embodiment of the invention 6 also provides is selected the method for affiliation, its flow chart as shown in Figure 6, described method comprises:

Step 601: the request message that the access server receiving terminal sends, described request message comprises: all conferencing informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to;

Step 602: access server obtains all conferencing informations that all conferencing informations that terminal can participate in or terminal can be subscribed to according to described request message from management server;

Step 603: access server sends request response to described terminal, and the described request response message comprises: all conferencing informations that all conferencing informations that terminal can be participated in or terminal can be subscribed to.

Preferably, after obtaining all list of conference information that terminal can participate in or the list of conference modification information that can subscribe to, described method can also comprise: judge whether the meeting number that terminal can be participated in or subscribe to is a plurality of, if be a plurality of, then send request response and specifically comprise to described terminal:

All list of conference information that the terminal of carrying in the nonstandard field by ARJ, sip message can be participated in send to terminal; Perhaps the list of conference modification information that can subscribe to of the terminal of carrying in the nonstandard field by RCF message, notification message sends to terminal.

Preferably, described method can also comprise: if judge that the meeting number that terminal can be participated in or subscribe to is 1, resolve the network address of media control server at the meeting identification place of described meeting, and the network address of described media control server is sent to terminal.

The specific implementation process of method described in the present embodiment sees the counterpart of the foregoing description 2, embodiment 3, embodiment 4, embodiment 5 for details, does not repeat them here.

Based on said method, a kind of access server that the embodiment of the invention 7 also provides, the structural representation of described access server as shown in Figure 7, comprise: receiving element 71, acquiring unit 72 and transmitting element 73, wherein, described receiving element 71, be used for the request message that receiving terminal sends, described request message comprises: all meeting modification informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to; Described acquiring unit 72 is used for obtaining all conferencing informations that terminal can participate in or the conferencing information that can subscribe to according to described request message from management server; Described transmitting element 73 is used for sending response message to described terminal, and described response message comprises: all conferencing informations that terminal can be participated in or the conferencing information that can subscribe to.

On the basis of Fig. 7, described access server can further include: judging unit 74 and resolution unit 75, its structural representation figure as shown in Figure 8, wherein, described judging unit 74, all conferencing informations that the terminal that is used for obtaining according to described acquiring unit can be participated in or the conferencing information that can subscribe to, if judge that the meeting number that terminal can be participated in or subscribe to is a plurality of, then described transmitting element specifically is used for sending to terminal by all conferencing informations that the terminal that the nonstandard field of ARJ or sip message is carried can be participated in; Perhaps the conferencing information that can subscribe to of the terminal of carrying in the nonstandard field by RCF message or notification message sends to terminal.

If judge that the meeting number that terminal can be participated in or subscribe to is 1, also comprise: resolution unit 75 is used to resolve the network address of media control server at the meeting place of described meeting, and the network address of described media control server is sent to terminal.

A kind of preferred embodiment, described receiving element also is used for the receiving management server and sends described terminal and can participate in the meeting modification information that maybe can subscribe to conferencing information;

Described transmitting element also is used for the described meeting modification information that receiving element receives is sent to terminal.

The implementation procedure of the function of each unit and effect sees implementation procedure corresponding in the said method for details in the described access server, does not repeat them here.

This access server can be integrated in the media control server, also can not rely on any equipment and independent the existence.

Accordingly, the embodiment of the invention 8 also provides a kind of terminal equipment, the structural representation of described terminal equipment as shown in Figure 9, this device comprises: acquiring unit 91, selected cell 92 and calling unit 93, wherein,

Described acquiring unit 91 is used to obtain all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to; Described selected cell 92 is used for getting access to all conferencing informations that all conferencing informations that terminal can participate in maybe can subscribe to from described acquiring unit 91 and selects needs to participate in or the meeting identification of subscription meeting; Described calling unit 93 is used for initiating meeting according to the meeting identification that described selected cell 92 is selected and inserts calling.

Described acquiring unit comprises: send subelement and receive subelement, wherein, described transmission subelement is used for sending a request message to access server, comprises all conferencing informations that all conferencing informations that terminal need be participated in or terminal need be subscribed in the nonstandard field of described request message; Described reception subelement is used to receive the response message that access server sends, and comprises all conferencing informations that all conferencing informations that terminal can be participated in or terminal can be subscribed in the nonstandard field of described response message.

On the basis of Fig. 9, described terminal equipment can also comprise: determining unit 94 and address acquisition unit 95, specifically as shown in figure 10, wherein

Described determining unit 94, be used for when described selected cell 92 selects the meeting of meeting that terminals need participate in or subscription to be a plurality of meeting, and the affiliation time of described a plurality of meetings conflicts mutually, a meeting that then needs definite terminal really need participate in, and a meeting that will need real needs to participate in sends to address acquisition unit;

Described address acquisition unit 95, be used for when receiving meeting that this terminal that described determining unit 94 sends really need participate in or subscribe to, then obtain the network address that the pairing media control server of meeting identification of meeting really need be participated in or subscribe to described terminal, and the network address of described media control server is sent to calling unit to access server;

Described calling unit 93, specifically be used for behind the network address that receives the media control server that needs call-conference that described address acquisition unit 95 sends, initiate meeting to the network address of the media control server of the meeting identification correspondence of described selection meeting and insert and call out.

The implementation procedure of the function of each unit and effect sees implementation procedure corresponding in the said method for details in the described terminal equipment, does not repeat them here.

The embodiment of the invention 9 provides a kind of media control server 11, its structural representation sees Figure 11 for details, comprise: access server 111, be used for the request message that receiving terminal sends, described request message comprises: all meeting modification informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to; And obtain all conferencing informations that terminal can participate in or the conferencing information that can subscribe to from management server according to described request message; Send response message to described terminal, described response message comprises: all conferencing informations that terminal can be participated in or the conferencing information that can subscribe to.

Wherein, described access server comprises: receiving element, acquiring unit and transmitting element, wherein the function of each unit and effect see Fig. 7 for details, and Fig. 8, do not repeat them here.

The embodiment of the invention 10 also provides a kind of system of terminal selection admission, comprise terminal equipment and access server, certainly, can also comprise management server and media control server, the structural representation of this system as shown in figure 12, this system comprises that terminal equipment 121 (can be arbitrary terminal equipment, also can be a plurality of terminal equipments, here for sake of convenience, be example only with terminal equipment A), access server 122, management server 123 and media control server 124 (technical scheme that the embodiment of the invention provides does not limit the number of media control server), wherein

Terminal equipment A, be used to send request message to access server 122, this request message comprises: all conferencing informations that all conferencing informations that terminal need be participated in or needs are subscribed to, and receiving access server transmission response message, described response message comprises all conferencing informations that terminal can be participated in or all conferencing informations that can subscribe to; And the meeting identification of from all conferencing informations that all conferencing informations that described terminal can be participated in maybe can be subscribed to, selecting really need to participate in a conference (present embodiment can number be an example with meeting); And initiate meeting to the meeting identification that described selection really need participate in a conference and insert calling; Perhaps call out access server 122 by shortcode, the conferencing information of all meetings that acquisition terminal equipment A can participate in, the user can be according to these conferencing informations, the meeting that autonomous selection need participate in;

Access server 122 is used for the request message that receiving terminal sends, and obtains all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to according to described request message from management server 123; And to described terminal transmission request response, described response message comprises: all conferencing informations that terminal can be participated in or all conferencing informations that can subscribe to;

Management server 123, be used to receive the request message that access server 122 is transmitted, according to the shortcode in the request message, obtain termination number, according to termination number, inquiry also obtains all conferencing informations that all conferencing informations that described terminal can participate in maybe can be subscribed to, and the conferencing information that all conferencing informations that described terminal can be participated in maybe can be subscribed to feeds back to access server 122;

Media control server 124 is used for the calling according to terminal A, with its interactive communication, makes terminal equipment A can participate in the meeting that the user will participate in.

The implementation procedure of the function of each unit and effect sees implementation procedure corresponding in the said method for details in the described system, does not repeat them here.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1, a kind of method of terminal selection admission is characterized in that, comprising:

2, method according to claim 1 is characterized in that, describedly obtains all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to specifically comprise:

Obtain all conferencing informations that terminal can participate in or all conferencing informations that can subscribe to by the content that comprises in the nonstandard field.

3, method according to claim 2 is characterized in that, describedly obtains all conferencing informations that terminal can participate in by the content that comprises in the nonstandard field and specifically comprises:

Send access request ARQ message to access server, comprise all conferencing informations that terminal need be participated in the nonstandard field of described ARQ message;

Receive the admission reject ARJ message that described access server sends, comprise all conferencing informations that terminal can be participated in the nonstandard field of described ARJ message.

4, method according to claim 2 is characterized in that, describedly obtains all conferencing informations that terminal can participate in by the content that comprises in the nonstandard field and specifically comprises:

Send the Session initiation protocol SIP signaling message to access server, comprise all conferencing informations that terminal need be participated in the nonstandard field of described SIP signaling message;

Receive the SIP signaling response message that described access server sends, comprise all conferencing informations that terminal can be participated in the nonstandard field of described SIP signaling response message.

5, method according to claim 4 is characterized in that, described SIP signaling message comprises: INFO signaling message and OPTION signaling message;

Comprise in the nonstandard field of described SIP signaling message that all conferencing informations that terminal need be participated in are specially: comprise all conferencing informations that terminal need be participated in the nonstandard field of the BODY message body of INFO signaling message or OPTION signaling message;

Comprise in the nonstandard field of described SIP signaling response message that all conferencing informations that can participate in are specially: comprise all conferencing informations that terminal can be participated in the nonstandard field of the BODY message body of INFO signaling response message or OPTION signaling response message.

6, method according to claim 2 is characterized in that, describedly obtains all conferencing informations that terminal can subscribe to by the content of carrying in the nonstandard field and specifically comprises:

Send heavyweight application for registration rrq message to access server, comprise all conferencing informations that terminal need be subscribed in the nonstandard field of described heavyweight application for registration rrq message;

Receive the accreditation verification RCF message that access server sends, comprise all conferencing informations that terminal can be subscribed in the nonstandard field of described RCF message.

7, method according to claim 6 is characterized in that, after receiving the RCF message that access server sends, describedly obtains the conferencing information that terminal can subscribe to by the content of carrying in the nonstandard field and specifically also comprises:

Send lightweight RRQ information to access server;

Receive the RCF message that described access server sends, comprise the meeting modification information that terminal can be subscribed in the nonstandard field of described RCF message.

8, method according to claim 2 is characterized in that, describedly obtains the conferencing information that terminal can subscribe to by the content of carrying in the nonstandard field and specifically comprises:

Send subscribe message to access server, comprise all conferencing informations that terminal need be subscribed in the nonstandard field of described subscribe message;

Receive the notification message that access server sends, comprise the conferencing information that terminal can be subscribed in the nonstandard field of described notification message.

9, method according to claim 8 is characterized in that, after receiving the notification message that access server sends, describedly obtains the conferencing information that terminal can subscribe to by the content of carrying in the nonstandard field and specifically also comprises:

Receive the Notification of Changes message that access server sends, described Notification of Changes message comprises the meeting modification information.

10, according to claim to 3 to 9 each described methods, it is characterized in that described method also comprises:

When the meeting of select to need participating in terminal or the meeting of subscription are a plurality of meeting, and the affiliation time of described a plurality of meetings conflicts mutually, a meeting that then needs definite terminal really need participate in, and the network address that obtains the pairing media control server of meeting identification of a described real meeting need participating in;

Described meeting identification to described selection meeting is initiated meeting and inserted to call out and specifically comprise: the network address of the pairing media control server of meeting identification of a meeting of participating in to described real needs is initiated meeting and is inserted calling.

11, according to each described method of claim 2 to 9, it is characterized in that the content of described nonstandard field specifically comprises: type of message, message identifier, message-length and message value.

12, a kind of control terminal is selected the method for affiliation, it is characterized in that, comprising:

13, method according to claim 12 is characterized in that, after obtaining all conferencing informations that all conferencing informations that terminal can participate in or terminal can subscribe to, described method also comprises:

If judge that the meeting number that terminal can be participated in or subscribe to is a plurality of, then describedly send request response to terminal and specifically comprise:

All conferencing informations that the terminal of carrying in the nonstandard field by ARJ or sip message can be participated in send to terminal; Perhaps

All conferencing informations that the terminal of carrying in the nonstandard field by RCF message or notification message can be subscribed to send to terminal.

14, method according to claim 12 is characterized in that, described method also comprises:

If judge that the meeting number that terminal can be participated in or subscribe to is 1, resolve the network address of media control server at the meeting identification place of described meeting, and the network address of described media control server is sent to terminal.

15, a kind of terminal equipment is characterized in that, comprising:

16, terminal equipment according to claim 15 is characterized in that, described acquiring unit comprises:

Send subelement, be used for sending a request message, comprise all conferencing informations that all conferencing informations that terminal need be participated in or terminal need be subscribed in the nonstandard field of described request message to access server;

Receive subelement, be used to receive the response message that access server sends, comprise all conferencing informations that all conferencing informations that terminal can be participated in or terminal can be subscribed in the nonstandard field of described response message.

17, according to claim 15 or 16 described terminal equipments, it is characterized in that described terminal equipment also comprises: determining unit and address acquisition unit, wherein

Described determining unit, be used for when described selected cell selects the meeting of meeting that terminal need participate in or subscription to be a plurality of meeting, and the affiliation time of described a plurality of meetings conflicts mutually, a meeting that then needs definite terminal really need participate in, and a meeting that will need real needs to participate in sends to address acquisition unit;

Described address acquisition unit, be used for when receiving meeting that this terminal that described determining unit sends really need participate in or subscribe to, then obtain the network address that the pairing media control server of meeting identification of meeting really need be participated in or subscribe to described terminal, and the network address of described media control server is sent to calling unit to access server;

Described calling unit, specifically be used for behind the network address that receives the media control server that needs call-conference that described address acquisition unit sends, initiate meeting to the network address of the media control server of the meeting identification correspondence of described selection meeting and insert and call out.

18, a kind of access server is characterized in that, comprising:

19, access server according to claim 18 is characterized in that, also comprises:

Judging unit, all conferencing informations that the terminal that is used for obtaining according to described acquiring unit can be participated in or the conferencing information that can subscribe to,

If judge that the meeting number that terminal can be participated in or subscribe to is a plurality of, then

Described transmitting element specifically is used for sending to terminal by all conferencing informations that the terminal that the nonstandard field of ARJ or sip message is carried can be participated in; Perhaps the conferencing information that can subscribe to of the terminal of carrying in the nonstandard field by RCF message or notification message sends to terminal.

20, access server according to claim 18 is characterized in that, if judge that the meeting number that terminal can be participated in or subscribe to is 1, also comprises:

Resolution unit is used to resolve the network address of media control server at the meeting place of described meeting, and the network address of described media control server is sent to terminal.

21, access server according to claim 18 is characterized in that,

Described receiving element also is used for the receiving management server and sends described terminal and can participate in the meeting modification information that maybe can subscribe to conferencing information;

22, a kind of media control server is characterized in that, comprising: access server, be used for the request message that receiving terminal sends, and described request message comprises: all meeting modification informations that all conferencing informations that terminal need be participated in or terminal need be subscribed to; And obtain all conferencing informations that terminal can participate in or the conferencing information that can subscribe to from management server according to described request message; Send response message to described terminal, described response message comprises: all conferencing informations that terminal can be participated in or the conferencing information that can subscribe to.

23, a kind of system of terminal selection admission is characterized in that, comprising: terminal equipment, access server and management server, wherein,