CN103428168A - Method, system and signaling gateway for SIP client side to visit RTSP media resource - Google Patents
Method, system and signaling gateway for SIP client side to visit RTSP media resource Download PDFInfo
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Abstract
The invention provides a method, system and signaling gateway for an SIP client side to visit an RTSP media resource so that the SIP client side can visit the RTSP media resource. The signaling gateway comprises an SIP module, a message transformation module and an RTSP module. The method and system for the SIP client side to visit the RTSP media resource can realize organic combination of a video monitoring system based on an RTSP and a communication system based on an SIP, and therefore video monitoring image taking can be as easy as phone call making as long a user uses an SIP terminal supporting video display; much convenience is brought to the video monitoring application field effectively expanded through special software adopted in an existing monitoring system in a PC picture taking mode, in particular to video taking of handheld mobile devices. The user can use the SIP video terminal for taking RTSP monitoring device video images, and therefore the video monitoring application range is effectively expanded.
Description
Technical field
The present invention relates to a kind of resource access method and system thereof, especially a kind of method, system and SGW of SIP client-access RTSP media resource.
Background technology
RTSP is an application Cheng Xieyi in the ICP/IP protocol system.This agreement is based on server/customer end constitution, is used for controlling the multi-medium data stream protocol of sound or image, and allows a plurality of data flow demands to control.The RTSP agreement is not synchronous to the time especially by force, so higher to the network delay tolerance.
RTSP has the characteristics higher to the network delay tolerance, is usually used in transmission and the control of the video image in field of video monitoring.It is a kind of Network Video Transmission control protocol that common both at home and abroad IP video monitoring collecting device (as: Haikang, large China, Sony) generally adopts.At present video monitoring system is all system architectures independently, needs to adopt special-purpose software to carry out the broadcasting of video image and to transfer, and can't combine with communication system.
SIP is a text based application layer control protocol, is independent of bottom host-host protocol TCP/UDP/SCTP, for setting up, revise and stop both sides on IP network or Multimedia session in many ways.Utilize Session Initiation Protocol to realize that the voip communications system is current commonplace a kind of networking telephone control protocol scheme.
The fusion that realizes at present RTSP and SIP communication system does not also realize.If sip user wishes to obtain the media resource on the RTSP media device, but the SIP client is only supported Session Initiation Protocol, the RTSP media device is only supported the RTSP agreement, so the SIP client can't be accessed the media resource above the RTSP media device.
Summary of the invention
The invention provides and a kind ofly can realize method, system and the SGW of SIP client to the SIP client-access RTSP media resource of the access of RTSP media resource.
Realize the SGW of one of the object of the invention, comprise SIP module, message conversion module and RTSP module; Wherein,
The SIP module, the sip message and the sip response message that for receiving the SIP client, send, and sip message and sip response information correspondence that described message conversion module conversion is obtained send to described SIP client;
Message conversion module, for sip message being converted to corresponding RTSP message, is corresponding sip message by the RTSP message conversion; Or the RTSP response message is converted to sip response message, sip response message is converted to the RTSP response message;
The RTSP module, the RTSP message and the RTSP response message that for receiving the RTSP media device, send, and RTSP message and RTSP response message correspondence that described message conversion module conversion is obtained send to described RTSP media device.
Described SGW, also comprise memory module, and this memory module is for storing the corresponding relation of SIP client, SIP Session ID, RTSP client, RTSP Session ID.
Realize the system of two the SIP client-access RTSP media resource of the object of the invention, comprise SIP client, purpose RTSP media device and above-mentioned SGW.
Realize the method for three the SIP client-access RTSP media resource of the object of the invention, comprise the steps:
(1) set up the session between session initiation protocol SIP client and SGW;
(2) set up the session between SGW and purpose real-time streaming protocol RTSP media device;
(3), according to the described session of setting up, the Media Stream of SIP client-requested transmission is transferred to the SIP client from purpose RTSP media device through SGW;
Wherein, the step of the session between the described SIP of foundation client and purpose RTSP media device comprises:
The SIP session establishment request message sent to SGW according to the SIP client, SGW sends RTSP session establishment request message to purpose RTSP media device;
SGW is after receiving the response message corresponding with described RTSP session establishment request message that purpose RTSP media device returns, according to this response message, send the response message corresponding with described SIP session establishment request message to described SIP client, set up this session.
Wherein, the step that SGW receives the SIP session establishment request message occurred from the SIP client is: extract the SIP CALL-ID information in SIP session establishment request message, preserve this SIP CALL-DI for the session between unique identification SIP client and SGW.
Wherein, the step that SGW sends RTSP session establishment request message to purpose RTSP media device comprises:
SIP Uniform Resource Identifier URI according to the Media Stream comprised in described SIP session establishment request message, search corresponding RTSP URI;
SIP session establishment request message is converted to corresponding RTSP session establishment request message;
The RTSP session establishment request message that will comprise RTSP URI sends to the purpose RTSP media device corresponding with this RTSP URI.
Wherein, the step that SIP session establishment request message is converted to corresponding RTSP session establishment request message is: add the session description informations such as the IP address of the RTSP URI of Media Stream, transmission means, media stream and port numbers to described RTSP session establishment request message.
Wherein, the step that SGW receives the response message that RTSP session establishment request message that the RTSP media device returns is corresponding is: extract and preserve the RTSP Session ID in the response message that described RTSP session establishment request message is corresponding, this RTSP Session ID is for this session between unique identification SGW and RTSP media device.
The beneficial effect of method, system and the SGW of SIP client-access RTSP media resource of the present invention is as follows:
Method and the system thereof of SIP client-access RTSP media resource of the present invention, video monitoring system based on RTSP and communication system based on Session Initiation Protocol can be realized to organic combination, the user uses that the sip terminal of supporting video to show is just can be as making a phone call light realizes transferring of video monitoring picture; The mode that the special-purpose software adopted for existing supervisory control system and PC transfer picture is the application of the video monitoring of expansion effectively, especially for the video of handheld mobile device, transfers and provides a great convenience.Use the SIP video terminal can transfer the ability of RTSP watch-dog video image, effectively expanded the range of application of video monitoring.
The accompanying drawing explanation
The structural representation of the system that Fig. 1 is SIP client-access RTSP media resource of the present invention.
The flow chart of SIP client-access RTSP service end in the embodiment 1 of the method that Fig. 2 is SIP client-access RTSP media resource of the present invention.
Fig. 3 is the flow chart of SGW inquiry media description in the embodiment 2 of method of SIP client-access RTSP media resource of the present invention.
Fig. 4 processes the flow chart of conversation end in the embodiment 3 of method of SIP client-access RTSP media resource of the present invention.
Fig. 5 processes the flow chart of conversation end in the embodiment 4 of method of SIP client-access RTSP media resource of the present invention.
Embodiment
As shown in Figure 1, SIP client-access RTSP media resource system of the present invention, comprise SIP client, purpose RTSP media device and above-mentioned SGW.SGW, comprise SIP module, message conversion module and RTSP module; Wherein,
The SIP module, the sip message and the sip response message that for receiving the SIP client, send, and sip message and sip response information correspondence that described message conversion module conversion is obtained send to described SIP client;
Message conversion module, for sip message being converted to corresponding RTSP message, is corresponding sip message by the RTSP message conversion; Or the RTSP response message is converted to sip response message, sip response message is converted to the RTSP response message;
The RTSP module, the RTSP message and the RTSP response message that for receiving the RTSP media device, send, and RTSP message and RTSP response message correspondence that described message conversion module conversion is obtained send to described RTSP media device.
The embodiment of the method for SIP client-access RTSP media resource of the present invention.
Embodiment 1:
As shown in Figure 2, this flow process comprises the following steps:
Step 101:SIP client sends SIP INVITE Request message.
In this step, the SIP INVITE Request that the SIP client sends is for setting up session to side's request of accepting this message.The session description informations such as the IP address of the SIP URI that comprises requested Media Stream in this SIP INVITE Request message, transmission means, code/decode format, media stream and port numbers, this IP address is the address of SIP client for receiving media stream.
In this step, the SIP client can produce a SIP CALL-ID, and this SIP CALL-ID is for the session between unique identification SIP client and SGW.Owing between SGW and SIP client, may having a plurality of sessions, in all interaction messages about this session between follow-up SGW and SIP client, all need to comprise this SIP CALL-ID, to distinguish with other sessions.
Step 102: after SGW receives SIP INVITE Request message, to the RTSP service end, send RTSP SETUP Request request.
In this step, after SGW receives SIP INVITE Request message, inquire about the RTSP URI corresponding with SIP URI, as SIP URI
Corresponding RTSP URI " rtsp: //camera 01.bj.com " build RTSP SETUP Request message, send this RTSP SETUP Request message to the RTSP service end corresponding with this RTSP URI.
In the present embodiment, can adopt conventional inquiry way to inquire about the RTSP URI corresponding with SIP URI, as the data base querying of SIP URI and RTSP URI corresponding relation is arranged to a special configuration, or to the dns server inquiry.
The way that is RTSP SETUP Request message by SIP INVITE Request message conversion can be: resolve the information such as sender, recipient and message content of SIP INVITE Request message, this information is filled in structure RTSP SETUP Request message.
In this step, the RTSP SETUP Request that SGW sends is for setting up session to the request of RTSP service end.In this RTSP SETUP Request message, comprise by session description informations such as the IP address of the RTSP URI of the Media Stream of program request, transmission means, media stream and port numbers, this IP address is the address of SGW for receiving media stream.
After step 103:RTSP service end receives RTSP SETUP Request message, to signal server, reply RTSP SETUP Response.
In this step, the RTSP service end is replied the information that comprises the session establishment success in RTSP SETUP Response message.If failure information is returned in the session establishment failure.
In this step, the RTSP service end need to produce a RTSP Session ID, and this RTSP Session ID is for this session between unique identification SGW and RTSP service end.The RTSP service end is added RTSP Session ID in RTSP SETUP Response message to.Because directly may there be a plurality of sessions in SGW and RTSP service end, therefore, follow-up SGW and RTSP service end directly in all interaction messages about this session, all need to comprise this RTSP Session ID, to distinguish with other sessions.
Step 104: after signal server is received RTSP SETUP Response, to the SIP client, reply SIP INVITE Response.
In this step, the session description informations such as the IP address of the transmission means of the Media Stream that comprises session establishment in the SIP INVITE Response message that SGW is replied, code/decode format, media stream and port numbers.If during the information of the session establishment failure that the RTSP service end that SGW receives is replied, the information that comprises the session establishment failure in the SIP INVITE Response that SGW will be replied to the SIP client.
After the success of step 105:RTSP session establishment, SGW sends RTSP PLAY Request message, request media play to the RTSP service end.
After step 106:RTSP service end is received RTSP PLAY Request, to SGW, reply RTSP PLAY Response.
Step 107: SGW is replied SIP INVITE Response to the SIP client.
In this step, if the RTSP PLAY Response that SGW receives is success message, SGW sends the information of SIP INVITE Response call setup success to the SIP client.If during the information of the media play failure that SGW receives, SGW will be replied the information that comprises the session establishment failure in SIPINVITE Response to the SIP client.
Step 108:SIP client sends SIP ACK message to SGW, confirms session establishment.
It should be noted that, in various embodiments of the present invention, can store the corresponding relation of current SIP client, SIP CALL-ID, RTSP service end, RTSP Session ID on the memory cell of SGW, SGW, according to the corresponding relation of current SIP client, SIP Session ID, RTSP service end, RTSP Session ID, is determined the Session ID of the corresponding opposite end of this session and opposite end.This corresponding relation can form a session relationship table.After a session establishment success, all to add respective entries in the session relationship table to.From certain SIP client has been received the message of certain session, can correspond to certain session of certain RTSP service end like this.Because may have a plurality of sessions between SIP client and SGW, also may there be a plurality of sessions between RTSP service end and SGW, so can distinguish concrete session with the drawing relation table.
In the present embodiment, this SIP client, SIP CALL-ID and RTSP service end, RTSP Session ID need be put into to the session relationship table as a newly-increased entry.
Step 109: according to the session of setting up, the RTSP service end will ask the Media Stream of transmission to send to SGW.
In this step, the RTSP service end according to and SGW between the session of setting up, according to the session negotiation result, as the transmission means of Media Stream etc., start media stream.
In this step, the RTSP service end adopts RTP (RTP) media stream.
Step 110: according to the session of setting up, the forwarding media stream that SGW will receive from the RTSP service end is to the SIP client.
In this step, SGW according to and the SIP client between the session of setting up, according to the session negotiation result, as the transmission means of Media Stream etc., start media stream.
In this step, SGW adopts RTP (RTP) media stream.
Embodiment 2:
As shown in Figure 3, this flow chart can complete before SIP client-requested media play, for obtaining the target medium object, as the media description information of RTSP service end.This flow process comprises step:
Step 201: SGW sends RTSP DESCRIBE Request.
In this step, SGW is inquired about the media description request by transmission, and request obtains the RTSP service end media description information that will access.RTSP media description information commonly used comprises: medium type, code/decode format, transmission means, transport address etc.
After step 202:RTSP service end receives RTSP DESCRIBE Request, to SGW, reply RTSP DESCRIBE Response.
In this step, SGW is kept at the media description information of the RTSP service end that comprises in the RTSP DESCRIBE Response message received in signal server.
Embodiment 3:
The present embodiment will be processed the unasked end session request of SIP client.In conversation procedure, the SIP client can be used SIP BYE Request, thinks that the SGW request finishes this session.After SGW is received this request, can discharge the resource of distributing to this session, after the SIP client is received the reply of server, also can discharge the resource that this session is used, to finish this session.
As shown in Figure 4, this flow process comprises some steps:
Step 301:SIP client sends SIP BYE Request message, and request finishes this session.
Step 302: after SGW is received the SIP BYE Request message of SIP client transmission, to the RTSP service end, send RTSP TEARDOWN Reuqest, request finishes this session.
Step 303:RTSP service end is replied RTSP TEARDOWN Response message, agrees end session.
Step 304: after SGW receives RTSP TEARDOWN Response message, to the SIP client, reply SIP BYE Response message, mean that the request of end session is treated.
Embodiment 4:
The present embodiment will be processed the unasked end session request of RTSP service end.
As shown in Figure 5, this flow process comprises the following steps:
Step 401:RTSP service end sends RTSP TEARDOWN Reuqest message, request end session to SGW.
Step 402: after SGW receives RTSP TEARDOWN Reuqest message, to the SIP client, send SIP BYE Request message, request finishes this session.
Step 403:SIP client is replied SIP BYE Response message, agrees end session.
Step 404: after SGW receives SIP BYE Response message, to the RTSP service end, reply RTSP TEARDOWN Response message, mean that the request of end session is treated.
In the various embodiments described above, the SIP client can be sip terminal, can be also sip application server.Wherein, sip application server is also to utilize SIP URI to be identified.
In sum, the embodiment of the present invention provides the SIP client-access RTSP method of media resource, by SGW, between SIP client and purpose RTSP media device, sets up session; According to the session of setting up, the Media Stream of SIP client-requested transmission is transferred to the SIP client from purpose RTSP media device through SGW, thereby realizes the access of SIP client to the RTSP media resource.
After the sip request message that the SGW that the embodiment of the present invention provides can send the SIP client is converted to corresponding RTSP request message, send to the RTSP media device; After the response message that also the RTSP media device can be returned is converted to corresponding sip response message, occur to the SIP client; By the message transformation function of this SGW, set up session between SIP client and purpose RTSP media device, and then realize the access of SIP client to the RTSP media resource.
In the system of the SIP client-access RTSP media resource that the embodiment of the present invention provides, comprise SIP client, purpose RTSP media device and above-mentioned SGW, set up the drawing between SIP client and purpose RTSP media device by this SGW, and then realize the access of SIP client to the RTSP media resource.
Embodiment recited above is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under spiritual prerequisite not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical solution of the present invention, all should fall in the definite protection range of claims of the present invention.
Claims (8)
1. a SGW, is characterized in that: comprise SIP module, message conversion module and RTSP module; Wherein,
The SIP module, the sip message and the sip response message that for receiving the SIP client, send, and sip message and sip response information correspondence that described message conversion module conversion is obtained send to described SIP client;
Message conversion module, for sip message being converted to corresponding RTSP message, is corresponding sip message by the RTSP message conversion; Or the RTSP response message is converted to sip response message, sip response message is converted to the RTSP response message;
The RTSP module, the RTSP message and the RTSP response message that for receiving the RTSP media device, send, and RTSP message and RTSP response message correspondence that described message conversion module conversion is obtained send to described RTSP media device.
2. SGW according to claim 1 is characterized in that: also comprise memory module, this memory module is for storing the corresponding relation of SIP client, SIP Session ID, RTSP client, RTSP Session ID.
3. the system of a SIP client-access RTSP media resource, is characterized in that: comprise SIP client, purpose RTSP media device and the described SGW of claim 1 or 2.
4. the method for a SIP client-access RTSP media resource, comprise the steps:
(1) set up the session between session initiation protocol SIP client and SGW;
(2) set up the session between SGW and purpose real-time streaming protocol RTSP media device;
(3), according to the described session of setting up, the Media Stream of SIP client-requested transmission is transferred to the SIP client from purpose RTSP media device through SGW;
Wherein, the step of the session between the described SIP of foundation client and purpose RTSP media device comprises:
The SIP session establishment request message sent to SGW according to the SIP client, SGW sends RTSP session establishment request message to purpose RTSP media device;
SGW is after receiving the response message corresponding with described RTSP session establishment request message that purpose RTSP media device returns, according to this response message, send the response message corresponding with described SIP session establishment request message to described SIP client, set up this session.
5. the method for SIP client-access RTSP media resource according to claim 4, it is characterized in that: the step that SGW receives the SIP session establishment request message occurred from the SIP client is: extract the SIP CALL-ID information in SIP session establishment request message, preserve this SIP CALL-DI for the session between unique identification SIP client and SGW.
6. the method for SIP client-access RTSP media resource according to claim 4 is characterized in that: the step that SGW sends RTSP session establishment request message to purpose RTSP media device comprises:
SIP Uniform Resource Identifier URI according to the Media Stream comprised in described SIP session establishment request message, search corresponding RTSP URI;
SIP session establishment request message is converted to corresponding RTSP session establishment request message;
The RTSP session establishment request message that will comprise RTSP URI sends to the purpose RTSP media device corresponding with this RTSP URI.
7. the method for SIP client-access RTSP media resource according to claim 4, it is characterized in that: the step that SIP session establishment request message is converted to corresponding RTSP session establishment request message is: add the session description informations such as the IP address of the RTSP URI of Media Stream, transmission means, media stream and port numbers to described RTSP session establishment request message.
8. according to the method for the arbitrary described SIP client-access RTSP media resource of claim 4-7, it is characterized in that: the step that SGW receives the response message that RTSP session establishment request message that the RTSP media device returns is corresponding is: extract and preserve the RTSP Session ID in the response message that described RTSP session establishment request message is corresponding, this RTSP Session ID is for this session between unique identification SGW and RTSP media device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104994067A (en) * | 2015-05-25 | 2015-10-21 | 南京邮电大学 | System and method for SIP network to access RTSP monitoring network |
| CN107734284A (en) * | 2017-09-18 | 2018-02-23 | 深圳市麦斯杰网络有限公司 | Media session method for building up, device and computer-readable recording medium |
| CN108307149A (en) * | 2017-12-29 | 2018-07-20 | 上海顶竹通讯技术有限公司 | A kind of video proxy system and monitoring method |
| CN109327435A (en) * | 2018-09-20 | 2019-02-12 | 安徽云森物联网科技有限公司 | Media resource acquisition methods, device and gateway |
| CN110138826A (en) * | 2019-04-02 | 2019-08-16 | 视联动力信息技术股份有限公司 | A kind of method and apparatus of business processing |
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| CN114448949A (en) * | 2022-02-18 | 2022-05-06 | 南京甄视智能科技有限公司 | Method and system for solving streaming phenomenon of client |
| CN114679435A (en) * | 2022-05-27 | 2022-06-28 | 武汉中科通达高新技术股份有限公司 | Session management system, method, computer device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104994067B (en) * | 2015-05-25 | 2018-05-18 | 南京邮电大学 | SIP network accesses the system and method for RTSP monitoring networks |
| CN104994067A (en) * | 2015-05-25 | 2015-10-21 | 南京邮电大学 | System and method for SIP network to access RTSP monitoring network |
| US10931720B2 (en) | 2017-06-08 | 2021-02-23 | Avaya Inc. | IP tolerance and signaling interworking |
| US11677792B2 (en) | 2017-06-08 | 2023-06-13 | Avaya Inc. | IP tolerance and signaling interworking |
| CN107734284A (en) * | 2017-09-18 | 2018-02-23 | 深圳市麦斯杰网络有限公司 | Media session method for building up, device and computer-readable recording medium |
| CN108307149A (en) * | 2017-12-29 | 2018-07-20 | 上海顶竹通讯技术有限公司 | A kind of video proxy system and monitoring method |
| CN109327435B (en) * | 2018-09-20 | 2021-05-25 | 安徽云森物联网科技有限公司 | Media resource acquisition method and device and gateway equipment |
| CN109327435A (en) * | 2018-09-20 | 2019-02-12 | 安徽云森物联网科技有限公司 | Media resource acquisition methods, device and gateway |
| CN110149306A (en) * | 2019-04-02 | 2019-08-20 | 视联动力信息技术股份有限公司 | A kind of processing method and processing device of media data |
| CN110138826A (en) * | 2019-04-02 | 2019-08-16 | 视联动力信息技术股份有限公司 | A kind of method and apparatus of business processing |
| CN110149306B (en) * | 2019-04-02 | 2022-01-04 | 视联动力信息技术股份有限公司 | Media data processing method and device |
| CN113329040A (en) * | 2021-08-03 | 2021-08-31 | 江苏怀业信息技术股份有限公司 | Protocol conversion method and device in media stream forwarding process |
| CN113329040B (en) * | 2021-08-03 | 2021-11-02 | 江苏怀业信息技术股份有限公司 | Protocol conversion method and device in media stream forwarding process |
| CN114448949A (en) * | 2022-02-18 | 2022-05-06 | 南京甄视智能科技有限公司 | Method and system for solving streaming phenomenon of client |
| CN114448949B (en) * | 2022-02-18 | 2024-03-01 | 小视科技(江苏)股份有限公司 | Method and system for solving streaming phenomenon of client |
| CN114679435A (en) * | 2022-05-27 | 2022-06-28 | 武汉中科通达高新技术股份有限公司 | Session management system, method, computer device and storage medium |
| CN114679433A (en) * | 2022-05-27 | 2022-06-28 | 武汉中科通达高新技术股份有限公司 | Video access session management system, method, computer device and storage medium |
| CN114679433B (en) * | 2022-05-27 | 2022-08-30 | 武汉中科通达高新技术股份有限公司 | Video access session management system, method, computer device and storage medium |
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Application publication date: 20131204 |