CN102523260A - Media transmitting method and media transmitting device - Google Patents
Media transmitting method and media transmitting device Download PDFInfo
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- CN102523260A CN102523260A CN2011103947847A CN201110394784A CN102523260A CN 102523260 A CN102523260 A CN 102523260A CN 2011103947847 A CN2011103947847 A CN 2011103947847A CN 201110394784 A CN201110394784 A CN 201110394784A CN 102523260 A CN102523260 A CN 102523260A
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Abstract
The invention discloses a media transmitting method and a media transmitting device. The method includes that a media server asks for media resource corresponding to business types carried by signals according to the signals coming from a circuit area user, converts the media form of the media resource and transmits converted media resource to the circuit area user. The media transmitting method and the media transmitting device reduce networking complexity, reduce equipment cost, and achieve the effect that the media server directly provides media for the circuit area user and increase application range of the media server.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of media transmitting method and device.
Background technology
Media server (Media Server; Abbreviate MS as) be the autonomous device that the specialized media resource function is provided in the soft exchanging system; It also is the visual plant in the packet network; Medium processing capacity in the fundamental sum enhancing business is provided; Comprise various resource functions and communication function and management maintenance functions such as conversion between the transmission, meeting, different code decode algorithm of dual-tone multifrequency (Dual Tone Multi Frequency the abbreviates DTMF as) collection of signal and the generation of decoding, signal tone and transmission, recorded announcement.
Soft switch (Soft Switch; Abbreviate SS as) be the nucleus equipment of Circuit Switching Network to Packet Based Network evolution; It also is one of visual plant of Next Generation Telecommunication Networks network; It is independent of the bottom bearing protocol, the main major functions such as calling out control, WMG access control, resource allocation, protocol processes, route, authentication, charging of accomplishing, and can be professional to the professional and diversified third party that the user provides the available circuit switch to provide.
Application server (Application Server; Abbreviation APP) logic of responsible various value-added services and IN service produces and management; And API (the Application Programming Interface of various openings is provided; Abbreviate API as), the exploitation professional for the third party provides authoring platform.Application server is an independently assembly; Irrelevant with the soft switch of key-course; Thereby realized business and called out separating of control that help the introducing of new business, APP is divided into VIG (Video Internet Gateway) business function and video traffic function in this networking.
WMG (Media Gateway abbreviates MGW as) becomes the desired media formats of another kind of network with the media conversion in a kind of network.For example: WMG can be changed between the Media Stream of the bearer path of Circuit Switching Network and Packet Based Network; Can processing audio, video, also can possess the ability of the combination in any of handling this three, can carry out the media translation of full duplex; Can demonstration video/audio message; Realize other interactive voice answering (Interactive Voice Response abbreviates IVR as) function, also can carry out media conference etc.
Fig. 1 is the networking sketch map according to the media services network of correlation technique, and is as shown in Figure 1, and SS inserts 2G user; And notice APP carries out the corresponding business butt joint; APP sends to MS and triggers the professional message of various 2G, and the session initiation protocol that MS issues according to APP (The Session Initiation Protocol abbreviates SIP as) signaling is carried out the corresponding audio-video frequency media that controls and issued MGW; MGW is again according to MGCP (Media Gateway ControlProtocol H.248/; Abbreviating MGCP as) protocol transmission is to SS, and MGW issues the 2G terminal to corresponding medium bag simultaneously, realizes functions such as polyphonic ringtone playing.
But, in the prior art, need accomplish the conversion of media formats through WMG, cause the networking of media server network complicated.
Summary of the invention
In correlation technique, the networking complicated problems of media services network and propose the present invention for this reason, the invention provides a kind of media transmitting method and device, to address the above problem at least.
According to an aspect of the present invention, a kind of media transmitting method is provided, has comprised: media server is asked the type of service corresponding resource of carrying with signaling according to the signaling from circuit domain user; The media formats of media server convert media resource; The media resource that sends after changing is given circuit domain user.
Preferably, according to the signaling from circuit domain user, before the type of service corresponding resource that request and signaling are carried, said method also comprises at media server: SS response circuit territory user's incoming call, send signaling to media server.
Preferably, according to the signaling from circuit domain user, before the type of service corresponding resource that request and signaling are carried, said method also comprises at media server: the signaling that media server sends through the direct receiving circuit of E1 territory user.
Preferably, according to the signaling from circuit domain user, after the type of service corresponding resource that request and signaling are carried, said method also comprises: the passage of opening media resource at media server.
Preferably; Media resource after sending conversion is given after the circuit domain user; Said method also comprises: media server receives the broadcast success message that circuit domain user sends, and wherein plays success message and is used to indicate the media resource after the conversion to play successfully at circuit domain user; Discharge the media resource after changing.
Preferably, after the media resource after discharging conversion, said method also comprises: the passage of closing media resource.
According to a further aspect in the invention, a kind of media transmission device is provided, has been applied to media server, having comprised: request module is used for according to the signaling from circuit domain user the type of service corresponding resource that request and signaling are carried; Modular converter is used for the media formats of convert media resource; Sending module, the media resource that is used to send after the conversion is given circuit domain user.
Preferably, said apparatus also comprises: first receiver module is used to receive SS response circuit territory user's incoming call and the signaling of sending.
Preferably, said apparatus also comprises: open module, be used to open the passage of media resource.
Preferably, said apparatus also comprises: second receiver module, be used for the broadcast success message that receiving circuit territory user sends, and wherein play success message and be used to indicate the media resource after the conversion to play successfully at circuit domain user; Release module is used to discharge the media resource after the conversion.
Networking of the present invention does not have WMG; And do not need extra signaling retransmission unit and Service Processing Unit, thereby reduced the complexity of networking, reduced equipment cost; Realize that media server directly provides medium to circuit domain user, increased the range of application of media server.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the networking sketch map according to the media services network of correlation technique;
Fig. 2 is the flow chart according to the media transmitting method of the embodiment of the invention;
Fig. 3 is the networking sketch map according to the media services network of the embodiment of the invention;
Fig. 4 is the flow chart of media transmitting method according to the preferred embodiment of the invention;
Fig. 5 is the structured flowchart according to the media transmission device of the embodiment of the invention;
Fig. 6 is the structured flowchart one of media transmission device according to the preferred embodiment of the invention;
Fig. 7 is the structured flowchart two of media transmission device according to the preferred embodiment of the invention;
Fig. 8 is the structured flowchart three of media transmission device according to the preferred embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
The invention provides a kind of media transmitting method, Fig. 2 is the flow chart according to the media transmitting method of the embodiment of the invention, and is as shown in Figure 2, comprises that following step S202 is to step S206.
Step S202, media server ask the type of service corresponding resource of carrying with signaling according to the signaling from circuit domain user.
Step S204, the media formats of media server convert media resource.
Step S206, the media resource that sends after changing is given circuit domain user.
In the correlation technique, the networking of media services network is complicated.In the embodiment of the invention, accomplish the translation function of former WMG by media server.Therefore, networking of the present invention does not have WMG, and does not need extra signaling retransmission unit and Service Processing Unit; Thereby reduced the complexity of networking; Reduce equipment cost, realized that media server directly provides medium to circuit domain user, increased the range of application of media server.
Before step S202, comprise that also media server receives the process from the signaling of circuit domain user, has following dual mode:
(1) SS response circuit territory user's incoming call is sent signaling to media server.
(2) media server is through the signaling of the direct receiving circuit of E1 territory user transmission.
Among the present invention, media server system is supported the E1 access function, utilizes H.248 agreement and Session Initiation Protocol realization signaling control and media services, coloring ring back tone playing.
After step S202, said method also comprises: the passage of opening media resource.
Media resource after sending conversion is given after the circuit domain user, also comprises: media server receives the broadcast success message that circuit domain user sends, and wherein plays success message and is used to indicate the media resource after the conversion to play successfully at circuit domain user; Discharge the media resource after changing.In this preferred embodiment, after circuit domain user plays medium, send to play success message notice media server and discharge media resource, can be in time resource be provided for the transmission of follow-up medium.
In addition, after the media resource after discharging conversion, also comprise: the passage of closing media resource.
Media transmitting method of the present invention, summarize as follows:
Steps A. user's incoming call SS, signaling is forwarded to MS to APP by APP under the SS, perhaps directly is issued to MS.
Step B.MS is that H248 agreement or Session Initiation Protocol are handled different flow processs according to received signaling.
Step C.MS is according to different business types, and the different resources type is obtained in application.
Step D. notice is opened each chnnels of resources, implements operation flow, and destination address sends medium (audio or video) outside media server.
Step e. media play finishes, and MS internal system resource discharges, and closes all passages.
Pass through above-mentioned steps; The invention provides a kind of software implementation method of supporting the new media server that circuit domain user directly inserts; Mainly be to utilize former media server signaling forwarding module and Service Processing Module; And under the situation that does not influence media server SIP handling process, accomplish communicating by letter of SS and media server through agreement H.248, the realization media server directly provides medium to CS territory user.This method can not only let the user enjoy media services widely, more can not change the existing equipment Signalling exchange not changing conventional network equipment, existing equipment is not proposed to reduce equipment cost under the situation of new adaptability change demand.Among the present invention, MS not only can send the RTP bag medium are provided, and can satisfy the E1 ability that inserts, and reduces the complexity of networking, increases the range of application of media server.
Fig. 3 is the networking sketch map according to the media services network of the embodiment of the invention, and is as shown in Figure 3, and media server is supported the E1 access function, utilizes H.248 agreement and Session Initiation Protocol realization signaling control and media services, coloring ring back tone playing.Implement CS territory connecting system (Circuit Switched Domain Access System; Abbreviate CSAS as) afterwards; Media server is supported the direct access media server of user in CS territory; Media server can be directly provides media services to the user in CS territory, no longer needs the translation function of WMG.Through the E1 access media server, there is media server to accomplish the medium conversion facilities of former WMG.Use H.248 agreement between SS and the media server, realize media services through signaling retransmission unit and Service Processing Unit on the former media server; No longer need extra signaling to transmit and Service Processing Module when service being provided, practiced thrift the equipment investment of operator the user in CS territory.The present invention is the technology and method that this kind CS territory connecting system in house software module realizes.
To combine instance that the implementation procedure of the embodiment of the invention is described in detail below.
Fig. 4 is the flow chart of media transmitting method according to the preferred embodiment of the invention, and is as shown in Figure 4, description be the idiographic flow of media server coloring ring back tone playing.
Step S402, H.248 module receives SS and issues the ADD request message, comprises some attributes of relaying TRUNK and RTP in the signaling.
Step S404, H.248 module is obtained the RTP resource to database.
Step S406, H.248 module is carried out encoding and decoding and is transmitted to the CALL module to related news agreement.
Step S408, the CALL module is replied to module H.248 and is received information response.
Step S410, H.248 module is replied the ADD_REPLAY response to SS.
Step S412, APP send the INVITE order, set up a session.
Step S414, the CALL module is to media resource collar extension of database application (IP, PORT).
Step S416 after the success of CALL module application resource, brings APP the SDP2 descriptor of media resource.
Step S418, H.248 module receives SS and issues the MODIFY request message, comprises some attributes of relaying TRUNK and RTP in the signaling.
Step S420, CALL module notice is opened RTP resource collar extension.
Step S422, CALL module notice is opened TRUNK resource mouth.
Step S424 opens the success of resource collar extension, and H.248 module is replied the MODIFY_REPLY response to SS.
Step S426, APP issues the MOML script through the INFO order.
Step S428, the playback of CALL module notice media services module.
Step S430, the playback of media services module notice CALL module is accomplished.
Step S432, CALL module notice is closed the media resource collar extension.
Step S434, the CALL module receives SS and issues the BYE request message.
Step S436, CALL module notification data library module discharge medium collar extension resource.
Step S438, H.248 module receives SS and issues the SUBSTRUCT request message, comprises some attributes of relaying Trunk and RTP in the signaling.
Step S440, CALL module notification database discharges the RTP resource.
Step S442, CALL module notification database discharges the TRUNK resource.
Step S444, CALL module notice RTP resource module is closed RTP resource collar extension.
Step S446, CALL module notice TRUNK resource module is closed TRUNK resource mouth.
Step S448 closes the resource success, and H.248 module is replied the SUBSTRUCT_REPLAY response to SS.
Need to prove; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in flow chart, in some cases, can have carried out step shown or that describe with the order that is different from here.
The embodiment of the invention provides a kind of media transmission device, is applied to media server, and this media transmission device can be used to realize above-mentioned media transmitting method.Fig. 5 is the structured flowchart according to the media transmission device of the embodiment of the invention, and is as shown in Figure 5, comprises request module 51, modular converter 52 and sending module 53.Be described in detail in the face of its structure down.
Fig. 6 is the structured flowchart one of media transmission device according to the preferred embodiment of the invention, and as shown in Figure 6, said apparatus also comprises: first receiver module 54 is used to receive that SS responds the incoming call of said circuit domain user and the signaling of sending.
Fig. 7 is the structured flowchart two of media transmission device according to the preferred embodiment of the invention, and as shown in Figure 7, said apparatus also comprises: open module 55, be connected to request module 51, be used to open the passage of media resource.
Fig. 8 is the structured flowchart three of media transmission device according to the preferred embodiment of the invention; As shown in Figure 8; Said apparatus also comprises: second receiver module 56; Be connected to sending module 53, be used for the broadcast success message that receiving circuit territory user sends, wherein play success message and be used to indicate the media resource after the conversion to play successfully at circuit domain user; Release module 57 is connected to second receiver module 56, is used to discharge the media resource after the conversion; Closing module 58 is connected to release module 57, is used to close the passage of media resource.
Need to prove that the media transmission device of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, repeat no more at this.
In sum, according to the abovementioned embodiments of the present invention, a kind of media transmitting method and device are provided.Media server networking of the present invention does not have WMG; And do not need extra signaling retransmission unit and Service Processing Unit; Thereby reduced the complexity of networking; Reduce equipment cost, realized that media server directly provides medium to circuit domain user, increased the range of application of media server.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. media transmitting method is characterized in that comprising:
Media server is asked the type of service corresponding resource of carrying with said signaling according to the signaling from circuit domain user;
Said media server is changed the media formats of said media resource;
The media resource that sends after changing is given said circuit domain user.
2. method according to claim 1; It is characterized in that; In the signaling of media server basis from circuit domain user; Before the type of service corresponding resource that request and said signaling are carried, also comprise: soft switch SS responds the incoming call of said circuit domain user, sends said signaling to said media server.
3. method according to claim 1; It is characterized in that; In the signaling of media server basis from circuit domain user; Before the type of service corresponding resource that request and said signaling are carried, also comprise: said media server directly receives the said signaling that said circuit domain user sends through E1.
4. method according to claim 1 is characterized in that,,, also comprises: the passage of opening said media resource after the type of service corresponding resource that request and said signaling are carried according to the signaling from circuit domain user at media server.
5. method according to claim 1 is characterized in that, the media resource after sending conversion is given after the said circuit domain user, also comprises:
Said media server receives the broadcast success message that said circuit domain user sends, and wherein said broadcast success message is used to indicate the media resource after the said conversion to play successfully at said circuit domain user;
Discharge the media resource after the said conversion.
6. method according to claim 5 is characterized in that, after the media resource after discharging said conversion, also comprises:
Close the passage of said media resource.
7. a media transmission device is applied to media server, it is characterized in that comprising:
Request module is used for according to the signaling from circuit domain user the type of service corresponding resource that request and said signaling are carried;
Modular converter is used to change the media formats of said media resource;
Sending module, the media resource that is used to send after the conversion is given said circuit domain user.
8. device according to claim 7 is characterized in that, said device also comprises: first receiver module is used to receive that SS responds the incoming call of said circuit domain user and the signaling of sending.
9. device according to claim 7 is characterized in that, said device also comprises: open module, be used to open the passage of said media resource.
10. device according to claim 7 is characterized in that, said device also comprises:
Second receiver module is used to receive the broadcast success message that said circuit domain user sends, and wherein said broadcast success message is used to indicate the media resource after the said conversion to play successfully at said circuit domain user;
Release module is used to discharge the media resource after the said conversion.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112468466A (en) * | 2020-11-16 | 2021-03-09 | 上海欣方智能系统有限公司 | Realization system for super-large-scale IMS AS technology |
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