CN101237337A - Method, system and device for transmitting multimedia message to the terminal in the conference system - Google Patents
Method, system and device for transmitting multimedia message to the terminal in the conference system Download PDFInfo
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- CN101237337A CN101237337A CNA2007100064592A CN200710006459A CN101237337A CN 101237337 A CN101237337 A CN 101237337A CN A2007100064592 A CNA2007100064592 A CN A2007100064592A CN 200710006459 A CN200710006459 A CN 200710006459A CN 101237337 A CN101237337 A CN 101237337A
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Abstract
The embodiment of the invention discloses a method used to send a multimedia message to a terminal inside a conference system based on session initial protocol (SIP). The method comprises the following steps: a conference center server receives a multimedia message sent from a sender terminal and judges whether the sender terminal supports the multimedia message; if the sender terminal does not support the multimedia message, the multimedia message is operated according to a conference strategy allocated in advance. The embodiment of the invention also discloses a system and a conference center server used to send a multimedia message to a terminal inside a conference system based on SIP. The method, the system and the conference center server can improve the capability of a terminal in receiving a multimedia message, thereby improving conference quality accordingly.
Description
Technical field
The present invention relates to the multimedia conferencing technology, particularly a kind of method, system and equipment that in the conference system of dialogue-based initiation protocol (SIP), sends Multimedia Message to terminal.
Background technology
In current multimedia conference system (being designated hereinafter simply as conference system) based on SIP, each participant is when sending the Multimedia Message of oneself, wish that all this message can correctly be received by other participants, and show or play by appropriate mode.But, because different participants' terminal there are differences with the negotiation ability of conference centre, thus cause other participant's terminals can not normally receive Multimedia Message possibly from sending side terminal, thus reduction meeting quality.
Each participant is when newly adding conference system, conference centre can at first carry out capability negotiation with participant's terminal, negotiate content comprises medium type, message size and the message-length etc. that conference centre and participant's terminal are supported, conference centre can note the negotiation ability information of participant's terminal after negotiation is finished.Like this, carry out in the process in meeting, when certain participant (transmit leg) will be when other certain participants (recipient) send Multimedia Message, conference centre can check at first whether receiving side terminal supports the Multimedia Message that sending side terminal sends, such as the multimedia type of whether supporting to be sent, if support, then this Multimedia Message sent to receiving side terminal by normal flow; If do not support, then conference centre will can not be transmitted to receiving side terminal with this Multimedia Message, and receiving side terminal also just can't receive this Multimedia Message certainly, thereby causes conversation failure.
Proposed a kind of solution at the above-mentioned similar problem that exists in the multimedia short message service (MMS) in the MMS business at present, Fig. 1 is the point to point service, PTP realization flow figure among the MMS, as shown in Figure 1, may further comprise the steps:
Step 101～102: sending side terminal sends multimedia short message to multimedia short message service center (MMSC) and submits request (MM1_Submit.REQ) message to, carries the multimedia short message content that sending side terminal will send to receiving side terminal in this MM1_Submit.REQ message; After MMSC successfully receives this MM1_Submit.REQ message, submit response (MM1_Submit.RES) message to sending side terminal loopback multimedia short message.
Step 103～104:MMSC sends multimedia short message notice request (MM1_Notification.REQ) message to receiving side terminal, and the notice receiving side terminal has a multimedia short message to need its reception in MMSC; After receiving side terminal receives MM1_Notification.REQ message, to MMSC loopback multimedia short message push-notification-answer (MM1_Notification.RES) message.
Step 105～106: receiving side terminal sends multimedia short message to MMSC and extracts request (MM1_Retrieve.REQ) message, and the multimedia short message that sending side terminal sends is extracted in request; MMSC extracts response (MM1_Retrieve.RES) message to receiving side terminal loopback multimedia short message, carries the multimedia short message that sending side terminal sends to receiving side terminal in the MM1_Retrieve.RES message.
Step 107: after receiving side terminal receives above-mentioned multimedia short message, confirm request (MM1_Acknowledge.REQ) message to MMSC loopback multimedia short message.
In the said process, if receiving side terminal does not extract the multimedia short message that sending side terminal sends in the given time, then MMSC carries out the unloading processing with this multimedia short message, and when receiving side terminal is not supported this multimedia short message, MMSC will provide the content adaptation ability for receiving side terminal, so that receiving side terminal can correctly receive and handle this multimedia short message.
But, though being applied among the MMS, said method can reach effect preferably, also inapplicable in multimedia conference system.At first, the multimedia short message that MMSC will be received from sending side terminal stores the scheduled time into, if do not receive the extraction request that receiving side terminal sends yet, just this multimedia short message can be carried out unloading is exactly to be not suitable for conference system, because conference system is the process of a real-time process information; Secondly, the content adaptation ability is the actual ability that possesses of terminal among the MMS, adaptive when unsuccessful, MMS can send to initial multimedia messages receiving side terminal or directly this initial multimedia messages be deleted, but the content adaptation ability in the SIP conference system is consulted by conference centre's server and participant's terminal, it does not possess above-mentioned functions, can not handle Multimedia Message according to the strategy of oneself, like this, each terminal in the conference system just can't normally receive the Multimedia Message that other terminal is sent, thereby caused the decline of each terminal receiving ability, and further reduced the meeting quality.
Summary of the invention
In view of this, the main purpose of the embodiment of the invention is to provide a kind of method that sends Multimedia Message in based on the conference system of SIP to terminal, can improve the receiving ability of terminal to Multimedia Message.
Another purpose of the embodiment of the invention is to provide a kind of system that sends Multimedia Message in based on the conference system of SIP to terminal, can improve the receiving ability of terminal to Multimedia Message.
The 3rd purpose of the embodiment of the invention is to provide a kind of conference centre's server that sends Multimedia Message in based on the conference system of SIP to terminal, can improve the receiving ability of terminal to Multimedia Message.
For achieving the above object, the technical scheme of the embodiment of the invention is achieved in that
A kind of method that in the conference system of dialogue-based initiation protocol SIP, sends Multimedia Message to terminal, this method may further comprise the steps:
Conference centre's server receives the Multimedia Message from sending side terminal;
Conference centre's server judges whether receiving side terminal supports described Multimedia Message, if do not support, then according to pre-configured conferencing policy described Multimedia Message is operated.
A kind of system that in based on the conference system of SIP, sends Multimedia Message to terminal, this system comprises sending side terminal, receiving side terminal and conference centre's server, key is;
Described conference centre server is used to receive the Multimedia Message from sending side terminal, and judges whether receiving side terminal supports described Multimedia Message, if do not support, then according to pre-configured conferencing policy described Multimedia Message is operated.
A kind of conference centre's server that in based on the conference system of SIP, sends Multimedia Message to terminal, this conference centre's server comprises: message pick-up extraction module, terminal capability memory module and conferencing policy Executive Module;
Described message pick-up extraction module is used to receive the Multimedia Message from sending side terminal, and extracts the characteristic information of described Multimedia Message, and the characteristic information that extracts is sent to the conferencing policy Executive Module;
Described terminal capability memory module is used for the negotiation ability information of each terminal of storage system, and after the negotiation ability that receives the conferencing policy Executive Module is extracted request, to the negotiation ability information of conferencing policy Executive Module loopback receiving side terminal;
Described conferencing policy Executive Module, be used to receive characteristic information from the Multimedia Message of message pick-up extraction module, and to terminal capability memory module transmission negotiation ability extraction request, consult ability information according to the receiving side terminal of described terminal capability memory module loopback and judge whether receiving side terminal supports the characteristic information of described Multimedia Message, if do not support, then described Multimedia Message is operated according to pre-configured conferencing policy.
As seen, adopt the technical scheme of the embodiment of the invention, conference centre's server is after receiving the Multimedia Message of sending side terminal, can judge at first whether this Multimedia Message can access the support of receiving side terminal, if can not get supporting, then can carry out respective handling, thereby improve the received probability of this Multimedia Message according to conferencing policy, promptly improve the receiving ability of receiving side terminal, and then improve the meeting quality.
Description of drawings
Fig. 1 is the point to point service, PTP realization flow figure among the MMS;
Fig. 2 is a system embodiment structural representation of the present invention;
Fig. 3 is a conference centre of the present invention server architecture schematic diagram;
Fig. 4 is preferred embodiment structural representation of system of the present invention;
Fig. 5 is the inventive method embodiment overview flow chart;
Fig. 6 is the flow chart of first preferred embodiment of the inventive method;
Fig. 7 is the flow chart of second preferred embodiment of the inventive method;
Fig. 8 is the flow chart of the 3rd preferred embodiment of the inventive method;
Fig. 9 is the flow chart of the 4th preferred embodiment of the inventive method.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.Need to prove that conference system of the present invention is the conference system based on SIP.
Fig. 2 is a system embodiment structural representation of the present invention, and as shown in Figure 2, this system comprises sending side terminal 201, receiving side terminal 203 and conference centre's server (Conference Server) 202 at least.
Wherein, Conference Server202 is used to receive the Multimedia Message from sending side terminal 201, and judges whether receiving side terminal 203 supports described Multimedia Message, if do not support, then Multimedia Message is operated according to pre-configured conferencing policy.
When conferencing policy for directly abandoning Multimedia Message and when receiving side terminal sends discard notification message, Conference Server202 specifically is used for, reception is from the Multimedia Message of sending side terminal 201, judge whether receiving side terminal 203 supports this Multimedia Message, if do not support, then abandon this Multimedia Message, and send discard notification message to receiving side terminal 203; Conference Server can be further used for, and sends discard notification message to sending side terminal 201.
When conferencing policy is a unloading Multimedia Message and when receiving side terminal sends the unloading notification message, said system further comprises a network storage entity, this network storage entity is used to receive the Multimedia Message of storage from Conference Server202, and carries the response message of memory address link or message identification (message ID) to Conference Server202 loopback; Correspondingly, Conference Server202 specifically is used for, reception is from the Multimedia Message of sending side terminal 201, judge whether receiving side terminal 203 supports this Multimedia Message, if do not support, then this Multimedia Message is transmitted to network storage entity, and behind the response message that receives network storage entity, sends the unloading notification message to receiving side terminal 203; Conference Server202 is further used for, and sends the unloading notification message to sending side terminal 201.
Above-mentioned network storage entity can be an independent entity, also can be arranged in the home server of ConferenceServer202 or receiving side terminal.
When conferencing policy when Multimedia Message is carried out content adaptation and the Multimedia Message after the content adaptation is sent to receiving side terminal, Conference Server202 specifically is used for, reception is from the Multimedia Message of sending side terminal 201, judge whether receiving side terminal 203 supports this Multimedia Message, if do not support, then this Multimedia Message is carried out content adaptation, and the Multimedia Message after the adaptive success is sent to receiving side terminal 203; Conference Server202 also can be further used for, and to the unsuccessful Multimedia Message of content adaptation, directly abandons or carries out unloading, and send to receiving side terminal 203 and to abandon or the unloading notification message.
Fig. 3 is a Conference Server202 structural representation of the present invention, and as shown in Figure 3, C onferenceServer202 comprises message pick-up extraction module 301, terminal capability memory module 302 and conferencing policy Executive Module 303.
Message pick-up extraction module 301 is used to receive the Multimedia Message from sending side terminal 201, and extracts the characteristic information of this Multimedia Message, and the characteristic information that extracts is sent to conferencing policy Executive Module 303;
Terminal capability memory module 302 is used for the negotiation ability information of each terminal of storage system, and after the negotiation ability that receives conferencing policy Executive Module 303 is extracted request, to the negotiation ability information of conferencing policy Executive Module 303 loopback receiving side terminals 203;
Conferencing policy Executive Module 303, be used to receive characteristic information from the Multimedia Message of message pick-up extraction module 301, and to the 302 transmission negotiation abilities extraction requests of terminal capability memory module, consult ability information according to the receiving side terminal 203 of terminal capability memory module 302 loopbacks and judge whether receiving side terminal 203 supports described multimedia characteristic information, if do not support, then this Multimedia Message is operated according to pre-configured conferencing policy.
According to the difference of mode of operation, conferencing policy Executive Module 303 specifically is used for, and Multimedia Message is abandoned or unloading, and abandon or the unloading notification message to receiving side terminal 203 transmissions; Perhaps, be used for Multimedia Message is carried out content adaptation, and the Multimedia Message after the content adaptation is transmitted to receiving side terminal 203; Conferencing policy Executive Module 303 also can be further used for, and sends to sending side terminal 201 to abandon or the unloading notification message.
Above-mentioned Conference Server202 also can further comprise a network storage entity 304, be used to receive and store Multimedia Message from conferencing policy Executive Module 303, and to the memory address link of conferencing policy Executive Module 303 these Multimedia Messages of loopback.
Based on above-mentioned introduction, Fig. 4 is preferred embodiment structural representation of system of the present invention, present embodiment is that conferencing policy is the unloading Multimedia Message and sends the unloading notification message to receiving side terminal, and the system configuration schematic diagram of network storage entity when being an independent functional entity.As shown in Figure 4, this system mainly comprises sending side terminal 401, Conference Server402, network storage entity 403 and receiving side terminal 405, simultaneously, because the present embodiment system is the conference system based on SIP, so further comprise SIP/IP core net 404 in the system.
Message session trunk protocol (MSRP) passage that sending side terminal 401 is set up when setting up meeting sends Multimedia Message to Conference Server402; After Conference Server402 receives Multimedia Message, extract the characteristic information of this Multimedia Message, such as medium type, message size and message-length etc., hypothesis is only extracted media type information in the present embodiment, the terminal of Conference Server402 inquiry self storage is consulted ability information, the medium type that extracts and the negotiation ability of receiving side terminal 405 are compared, discovery receiving side terminal 405 is not supported this medium type, then according to pre-configured conferencing policy decision this Multimedia Message is dumped in the network storage entity 403; Conference Server402 regards network storage entity 403 as a common user of attending a meeting, and it is joined in the conference system, and send above-mentioned Multimedia Message to network storage entity 403; Network storage entity 403 receives and stores this Multimedia Message, and carry the response message of this multimedia message-storing addresses link to Conference Server402 loopback, afterwards, network storage entity 403 can select to withdraw from meeting, also can select to participate in a conference, until end always; After Conference Server402 receives response message from network storage entity 403, send the unloading notification messages to receiving side terminal 405 by SIP/IP core net 404; Receiving side terminal 405 is known according to described unloading notification message because the own terminal ability of consulting is not supported, a Multimedia Message that sends to oneself has been transferred in the network storage entity 403, and receiving side terminal 405 also can be transmitted notification message by this and learn information such as the title of the terminal name that sends this Multimedia Message, this Multimedia Message and type; Receiving side terminal 405 is to Conference Server402 back response message.If receiving side terminal 405 wants to obtain this Multimedia Message afterwards, can extract this Multimedia Message according to the memory address link of this Multimedia Message by himself terminal or alternate manner such as changing a terminal of supporting this Multimedia Message.
The preferable composition structure of other possible system is nothing but the difference according to conferencing policy, do not comprise that network storage entity or network storage entity are arranged in the home server of Conference Server or receiving side terminal, those skilled in the art can come out according to above-mentioned introduction in more or less freely derivation, repeat no more herein.
Fig. 5 is the overall embodiment flow chart of the inventive method, and the solution of the present invention all is to have set up on the basis of meeting in hypothesis to carry out, and as shown in Figure 5, may further comprise the steps:
Step 501:Conference Server receives the Multimedia Message from sending side terminal.
The MSRP passage that sending side terminal is set up when setting up meeting sends Multimedia Message to Conference Server, this Multimedia Message can be carried at MSRP and send in (SEND) request message or in other the sip message, after Conference Server receives this Multimedia Message, to sending side terminal back response message.
Step 502:Conference Server judges whether receiving side terminal supports this Multimedia Message, if do not support, then according to pre-configured conferencing policy this Multimedia Message is operated.
In this step, Conference Server judges whether receiving side terminal supports the mode of this Multimedia Message to be: Conference Server extracts the characteristic information of this Multimedia Message, such as medium type, message size and message-length etc., and consult ability information according to the terminal of storage in advance and judge whether the negotiation ability of receiving side terminal supports this Multimedia Message feature.It is that terminal initial is consulted the ability information supported with Conference Server when adding conference system that the above-mentioned terminal of storage is in advance consulted ability information, such as medium type, message size and the message-length etc. of terminal support.
If above-mentioned deterministic process demonstration receiving side terminal is supported this Multimedia Message, then Conference Server sends to receiving side terminal with this Multimedia Message, and receiving side terminal carries out relevant treatment to this message, and these are prior art, no longer introduce; If do not support, then Conference Server carries out respective handling according to pre-configured conferencing policy, here the said pre-configured unified configuration in Conference Server when meeting is set up that is meant, or afterwards by Conference Server configuration, or when adding meeting, in Conference Server, disposes terminal initial; Described conferencing policy can for: directly abandon this Multimedia Message and send discard notification message, this Multimedia Message of unloading and send the unloading notification message, or this Multimedia Message is carried out content adaptation and the Multimedia Message after the content adaptation is sent to receiving side terminal to sending side terminal to sending side terminal.
Different conferencing policy correspondences different processing methods:
(1) when conferencing policy for directly abandoning this Multimedia Message and when sending side terminal sends discard notification message, may further comprise the steps:
Conference Server abandons this Multimedia Message; Conference Server sends discard notification message to receiving side terminal; Receiving side terminal is to Conference Server back response message.
If carry an above media content in the Multimedia Message, and when receiving side terminal is not supported wherein part of media content, Conference Server can directly send to receiving side terminal with the media content that can access the receiving side terminal support, and the media content that will can not get the receiving side terminal support abandons; Perhaps, directly all media contents are abandoned.
This method can further comprise: Conference Server sends discard notification message to sending side terminal.
(2) when conferencing policy be this Multimedia Message of unloading and when sending side terminal sends the unloading notification message, may further comprise the steps:
Conference Server dumps to this Multimedia Message in the network storage entity of conference centre, and the network storage entity of described conference centre carries the response message of multimedia message-storing addresses link to Conference Server loopback; Perhaps, Conference Server dumps to this Multimedia Message in the network storage entity of receiving side terminal this locality, and the network storage entity of described receiving side terminal this locality carries the response message of message ID to the ConferenceServer loopback;
Conference Server sends the unloading notification message that carries memory address link or message ID to receiving side terminal; Receiving side terminal is to Conference Server back response message.
Equally, if carry an above media content in the described Multimedia Message, and when receiving side terminal is not supported wherein part of media content, Conference Server can directly send to receiving side terminal with the media content that can access the receiving side terminal support, and the media content that can not get recipient's support is carried out unloading; Perhaps, all media contents are carried out unloading.
This method can further comprise: Conference Server sends the unloading notification message to sending side terminal.
If receiving side terminal wants to obtain the Multimedia Message of unloading later on, can extract this Multimedia Message according to memory address link or message ID.
(3) when conferencing policy when this Multimedia Message being carried out content adaptation and the Multimedia Message after the content adaptation sent to receiving side terminal, may further comprise the steps:
Conference Server carries out content adaptation to this Multimedia Message, if the content adaptation success then sends to receiving side terminal with the Multimedia Message after the content adaptation; The Multimedia Message of receiving side terminal after to content adaptation handled, and to Conference Server back response message;
If adaptive unsuccessful, then Conference Server continues according to directly abandoning this Multimedia Message and sending discard notification message or this Multimedia Message of unloading and to the method that receiving side terminal sends the unloading notification message this Multimedia Message is handled to receiving side terminal.
Fig. 6 is the flow chart of first preferred embodiment of the inventive method, and present embodiment adopts the mode that directly abandons back transmission discard notification to handle and can not get the Multimedia Message that receiving side terminal is supported, as shown in Figure 6, may further comprise the steps:
Step 601: the some participants in the conference system will send Multimedia Message to other participants, by this participant's terminal, promptly the MSRP passage set up when setting up meeting of sending side terminal sends MSRP SEND request message to Conference Server.
Carry the Multimedia Message that sending side terminal will send in the MSRP SEND request message, this MSRP SEND request message sends to Conference Server by the SIP/IP core net.
After step 602:Conference Server receives MSRP SEND request message, to sending side terminal loopback MSRP 200 OK response messages.
Step 603:Conference Server judges whether receiving side terminal supports this Multimedia Message, if do not support, then this Multimedia Message is abandoned.
Conference Server judges whether receiving side terminal supports the method for this Multimedia Message to be: Conference Server extracts the characteristic information of this Multimedia Message, such as, medium type, message-length etc., hypothesis is only extracted media type information in the present embodiment, and consult ability information by the receiving side terminal of inquiring about self storage and judge whether receiving side terminal supports this medium type, if support, then handle by prior art; If do not support, then this Multimedia Message is abandoned.
Step 604～605:Conference Server sends discard notification message by the SIP/IP core net to receiving side terminal, and the discard notification message in the present embodiment is a sip message (MESSAGE).
Carry Multimedia Message among the SIP MESSAGE and be dropped, send information such as the title of terminal, this Multimedia Message of this Multimedia Message and type.
Above-mentioned discard notification message is transmitted by the SIP/IP core net, in actual applications, also can by MSRP passage or other as predetermined (SUBSCRIBE)/notify (NOTIFY) mode to send to receiving side terminal.
Step 606: receiving side terminal learns that according to the SIP MESSAGE that receives a participant had once sent Multimedia Message to oneself, but owing to can not get this Multimedia Message of support of self terminal and be dropped.
Step 607～608: receiving side terminal passes through the SIP/IP core net to Conference Server loopback 200OK response message.
Conference Server also can further send discard notification message to sending side terminal, with its which Multimedia Message that sends to which terminal and transmission of notice sending side terminal is dropped.
Need to prove, if include a plurality of media contents in the Multimedia Message that sending side terminal sends, and receiving side terminal is not just supported one of them or several media content rather than all the time, Conference Server can select to abandon all media contents or just abandon the unsupported media content of receiving side terminal according to conferencing policy.
Fig. 7 is the flow chart of second preferred embodiment of the inventive method, the mode that sends the unloading notice after the present embodiment employing unloading is handled the Multimedia Message that can not get the receiving side terminal support, and network storage entity (NS) is an independent functional entity, as shown in Figure 7, may further comprise the steps:
Step 701: the MSRP passage that sending side terminal is set up when setting up meeting sends MSRP SEND request message to ConferenceServer.
Carry the Multimedia Message that sending side terminal will send in the MSRP SEND request message, this MSRP SEND request message sends to Conference Server by the SIP/IP core net.
After step 702:Conference Server receives MSRP SEND request message, to sending side terminal loopback MSRP 200 OK response messages.
Step 703:Conference Server judges whether receiving side terminal supports this Multimedia Message, if do not support, then decision is with this Multimedia Message unloading.
Conference Server judges whether receiving side terminal supports the method for this Multimedia Message to be: Conference Server extracts the characteristic information of this Multimedia Message, such as, medium type, message length etc., hypothesis is only extracted media type information in the present embodiment, and consult ability information by the receiving side terminal of inquiring about self storage and judge whether receiving side terminal supports this medium type, if support, then handle by prior art; If do not support that then execution in step 704.
Step 704:Conference Server sends to NS with this Multimedia Message.
NS in the present embodiment is the unified network storage entity of an independent network entity or conference centre, Conference Server had set up interface channel with NS before sending Multimedia Message to it, method for building up is for to regard NS as a participant, according to the mode that in the prior art participant is added meeting NS is joined in the conference system, like this, Conference Server can send Multimedia Message to NS by the MSRP passage of setting up.
After step 705:NS receives and stores this Multimedia Message,, carry this Multimedia Message institute address stored link in the response message to Conference Server back response message.
After the back response message, NS can select to withdraw from meeting, also can select to continue to participate in a conference, until meeting adjourned.
Step 706～707:Conference Server sends the unloading notification message by the SIP/IP core net to receiving side terminal, and the unloading notification message in the present embodiment is a SIP MESSAGE.
Carry Multimedia Message among the SIP MESSAGE by information such as the title of unloading, the terminal that sends this Multimedia Message, this Multimedia Message, type and the links of unloading address.
Step 708: receiving side terminal learns that according to the SIP MESSAGE that receives a participant had once sent Multimedia Message to oneself, but owing to can not get this Multimedia Message of support of self terminal and be transferred among the NS.
According to the address link information among the SIP MESSAGE, receiving side terminal can be afterwards by self terminal or otherwise, support the terminal of above-mentioned multimedia type to obtain described Multimedia Message such as changing one.
Step 709～710: receiving side terminal passes through the SIP/IP core net to Conference Server loopback 200OK response message.
Conference Server also can further send the unloading notification message to sending side terminal, to notify its which Multimedia Message that sends to which terminal and transmission of sending side terminal by unloading.
Need to prove, if include a plurality of media contents in the Multimedia Message that sending side terminal sends, and receiving side terminal is not just supported one of them or several media content rather than all the time, Conference Server can be according to conferencing policy, selects all media contents of unloading or the unsupported media content of unloading receiving side terminal just.
Fig. 8 is the flow chart of the 3rd preferred embodiment of the inventive method, present embodiment adopts the mode that sends the unloading notice after the unloading to handle equally and can not get the Multimedia Message that receiving side terminal is supported, comparing difference with embodiment two only is: the Multimedia Message that will can not get the receiving side terminal support in the present embodiment dumps among the NS of receiving side terminal home server, and NS is not re-used as an independent functional entity and occurs; Correspondingly, home server carries Message id information rather than memory address link information in the response message of Conference Server loopback behind the storage Multimedia Message.Other flow process and embodiment two are similar, repeat no more.
Fig. 9 is the flow chart of the 4th preferred embodiment of the inventive method, and present embodiment adopts the mode of carrying out content adaptation to handle and can not get the Multimedia Message that receiving side terminal is supported, as shown in Figure 9, may further comprise the steps:
Step 901: the MSRP passage that sending side terminal is set up when setting up meeting sends MSRP SEND request message to ConferenceServer.
Carry the Multimedia Message that sending side terminal will send in the MSRP SEND request message, this MSRP SEND request message sends to Conference Server by the SIP/IP core net.
After step 902:Conference Server receives MSRP SEND request message, to sending side terminal loopback MSRP 200 OK response messages.
Step 903:Conference Server judges whether receiving side terminal supports this Multimedia Message, if do not support, then this Multimedia Message is directly abandoned.
Conference Server judges whether receiving side terminal supports the method for this Multimedia Message to be: Conference Server extracts the characteristic information of this Multimedia Message, such as, medium type, message length etc., hypothesis is only extracted media type information in the present embodiment, and consult ability information by the receiving side terminal of inquiring about self storage and judge whether receiving side terminal supports this medium type, if support, then handle by prior art; If do not support, then this Multimedia Message is carried out content adaptation, be the difference that Conference Server relatively is received from the medium type and the medium type that receiving side terminal is supported of sending side terminal, the medium type that is received from sending side terminal is converted to the medium type that receiving side terminal is supported.
Such as, sending side terminal has sent the picture of a GIF (GIF) to receiving side terminal, and receiving side terminal can only receive the picture of JPEG (joint photographic experts group) form (JPEG), so, Conference Server just needs in this step the GIF format picture to be converted to the jpeg format picture.
Step 904～905:Conference Server sends MSRP SEND request message by the SIP/IP core net to receiving side terminal.
Carry in the MSRP SEND request message through the Multimedia Message after the content adaptation.
Step 906: the Multimedia Message of receiving side terminal after to the process content adaptation that receives carries out relevant treatment.
Step 907～908: receiving side terminal passes through the SIP/IP core net to Conference Server loopback 200OK response message.
Need to prove that if content adaptation is unsuccessful, Conference Server can continue according to the method described in embodiment one, two or three this Multimedia Message to be handled.
As seen, adopt the technical scheme of the embodiment of the invention, improved the receiving ability of receiving side terminal, strengthened participant's the ability of attending a meeting, improved participant's business experience, improved the meeting quality Multimedia Message.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (23)
1. method that sends Multimedia Message in the conference system of dialogue-based initiation protocol SIP to terminal is characterized in that this method may further comprise the steps:
Conference centre's server receives the Multimedia Message from sending side terminal;
Conference centre's server judges whether receiving side terminal supports described Multimedia Message, if do not support, then according to pre-configured conferencing policy described Multimedia Message is operated.
2. method according to claim 1 is characterized in that, described conference centre server judges whether receiving side terminal supports the step of described Multimedia Message to comprise:
Conference centre's server extracts the characteristic information of Multimedia Message, and consults ability information according to the terminal of storage in advance and judge whether the negotiation ability of described receiving side terminal supports the feature of described Multimedia Message.
3. method according to claim 1 is characterized in that, the step that described conference centre server is operated described Multimedia Message according to pre-configured conferencing policy comprises:
Conference centre's server abandons described Multimedia Message; Conference centre's server sends discard notification message to receiving side terminal; Receiving side terminal is to conference centre's server back response message.
4. method according to claim 3, it is characterized in that, carry an above media content in the described Multimedia Message, and receiving side terminal do not support part of media content wherein, then conference centre's server step of abandoning described Multimedia Message comprises:
The media content that conference centre's server can access the receiving side terminal support directly sends to receiving side terminal, and the media content that can not get the receiving side terminal support is abandoned; Perhaps, directly all media contents are abandoned.
5. according to claim 3 or 4 described methods, it is characterized in that this method further comprises: conference centre's server sends discard notification message to sending side terminal.
6. method according to claim 1 is characterized in that, the step that described conference centre server is operated described Multimedia Message according to pre-configured conferencing policy comprises:
Conference centre's server dumps to described Multimedia Message in the network storage entity of conference centre, and the network storage entity of described conference centre carries the response message of multimedia message-storing addresses link to conference centre's server loopback; Perhaps, conference centre's server dumps to described Multimedia Message in the network storage entity of receiving side terminal this locality, and the network storage entity of described receiving side terminal this locality carries the response message of message identification message ID to conference centre's server loopback;
Conference centre's server sends the unloading notification message that carries memory address link or message ID to receiving side terminal; Receiving side terminal is to conference centre's server back response message.
7. method according to claim 6, it is characterized in that, carry an above media content in the described Multimedia Message, and receiving side terminal do not support part of media content wherein, then the step of the described Multimedia Message of conference centre's server unloading comprises:
The media content that conference centre's server can access the receiving side terminal support directly sends to receiving side terminal, and the media content that can not get recipient's support is carried out unloading; Perhaps, all media contents are carried out unloading.
8. according to claim 6 or 7 described methods, it is characterized in that this method further comprises: conference centre's server sends the unloading notification message to sending side terminal.
9. method according to claim 8 is characterized in that, this method further comprises: described receiving side terminal extracts described Multimedia Message according to memory address link or message ID.
10. method according to claim 1 is characterized in that, the step that described conference centre server is operated described Multimedia Message according to pre-configured conferencing policy comprises:
Conference centre's server carries out content adaptation to described Multimedia Message, if the content adaptation success then sends to receiving side terminal with the Multimedia Message after the content adaptation; The Multimedia Message of receiving side terminal after to described content adaptation handled, and to conference centre's server back response message.
11. method according to claim 10 is characterized in that, this method further comprises:
If adaptive unsuccessful, then conference centre's server continues according to directly abandoning described Multimedia Message and sending discard notification message or the described Multimedia Message of unloading and to the method that sending side terminal sends the unloading notification message described Multimedia Message is handled to sending side terminal.
12. a system that sends Multimedia Message in based on the conference system of SIP to terminal, this system comprises sending side terminal, receiving side terminal and conference centre's server, it is characterized in that;
Described conference centre server is used to receive the Multimedia Message from sending side terminal, and judges whether receiving side terminal supports described Multimedia Message, if do not support, then according to pre-configured conferencing policy described Multimedia Message is operated.
13. system according to claim 12 is characterized in that, when conferencing policy for directly abandoning described Multimedia Message and when receiving side terminal sends discard notification message;
Described conference centre server specifically is used for, and receives the Multimedia Message from sending side terminal, judges whether receiving side terminal supports described Multimedia Message, if do not support, then abandons described Multimedia Message, and sends discard notification message to receiving side terminal.
14. system according to claim 13 is characterized in that, described conference centre server is further used for, and sends discard notification message to sending side terminal.
15. system according to claim 12 is characterized in that, when conferencing policy is the described Multimedia Message of unloading and when receiving side terminal sends the unloading notification message, this system further comprises a network storage entity;
Described network storage entity is used to receive and store the Multimedia Message from conference centre's server, and carries the response message of memory address link or message ID to conference centre's server loopback;
Described conference centre server specifically is used for, reception is from the Multimedia Message of sending side terminal, judge whether receiving side terminal supports described Multimedia Message, if do not support, then described Multimedia Message is transmitted to network storage entity, and behind the response message that receives described network storage entity, sends the unloading notification message to receiving side terminal.
16. system according to claim 15 is characterized in that, described conference centre server is further used for, and sends the unloading notification message to sending side terminal.
17., it is characterized in that described network storage entity is an independent entity, or is arranged in conference centre's server according to claim 15 or 16 described systems, or be arranged in the home server of receiving side terminal.
18. system according to claim 12 is characterized in that, when conferencing policy when described Multimedia Message is carried out content adaptation and the Multimedia Message after the content adaptation is sent to receiving side terminal;
Described conference centre server specifically is used for, reception is from the Multimedia Message of sending side terminal, judge whether receiving side terminal supports described Multimedia Message, if do not support, then described Multimedia Message is carried out content adaptation, and the Multimedia Message after the content adaptation success is sent to receiving side terminal.
19. system according to claim 18 is characterized in that, described conference centre server is further used for, and to the unsuccessful Multimedia Message of content adaptation, directly abandons or carries out unloading, and send to receiving side terminal and to abandon or the unloading notification message.
20. the conference centre's server that sends Multimedia Message in based on the conference system of SIP to terminal is characterized in that this conference centre's server comprises: message pick-up extraction module, terminal capability memory module and conferencing policy Executive Module;
Described message pick-up extraction module is used to receive the Multimedia Message from sending side terminal, and extracts the characteristic information of described Multimedia Message, and the characteristic information that extracts is sent to the conferencing policy Executive Module;
Described terminal capability memory module is used for the negotiation ability information of each terminal of storage system, and after the negotiation ability that receives the conferencing policy Executive Module is extracted request, to the negotiation ability information of conferencing policy Executive Module loopback receiving side terminal;
Described conferencing policy Executive Module, be used to receive characteristic information from the Multimedia Message of message pick-up extraction module, and to terminal capability memory module transmission negotiation ability extraction request, consult ability information according to the receiving side terminal of described terminal capability memory module loopback and judge whether receiving side terminal supports the characteristic information of described Multimedia Message, if do not support, then described Multimedia Message is operated according to pre-configured conferencing policy.
21. conference centre according to claim 20 server is characterized in that, described conferencing policy Executive Module is further used for, and described Multimedia Message is abandoned or unloading, and abandon or the unloading notification message to the receiving side terminal transmission; Perhaps, be used for described Multimedia Message is carried out content adaptation, and the Multimedia Message after the content adaptation success is transmitted to receiving side terminal.
22. conference centre according to claim 21 server is characterized in that, described conferencing policy Executive Module is further used for, and sends to sending side terminal to abandon or the unloading notification message.
23. according to each described conference centre server in the claim 20～22, it is characterized in that, described conference centre server further comprises a network storage module, be used to receive and store Multimedia Message from the conferencing policy Executive Module, and to the memory address link of the described Multimedia Message of conferencing policy Executive Module loopback.
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| CN2007100064592A CN101237337B (en) | 2007-01-30 | 2007-01-30 | Method, system and device for transmitting multimedia message to the terminal in the conference system |
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| CN2007100064592A CN101237337B (en) | 2007-01-30 | 2007-01-30 | Method, system and device for transmitting multimedia message to the terminal in the conference system |
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| CN2007100064592A Active CN101237337B (en) | 2007-01-30 | 2007-01-30 | Method, system and device for transmitting multimedia message to the terminal in the conference system |
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