CN100596157C - Method for realizing stream media switching and stream media server - Google Patents
Method for realizing stream media switching and stream media server Download PDFInfo
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- CN100596157C CN100596157C CN200510135981A CN200510135981A CN100596157C CN 100596157 C CN100596157 C CN 100596157C CN 200510135981 A CN200510135981 A CN 200510135981A CN 200510135981 A CN200510135981 A CN 200510135981A CN 100596157 C CN100596157 C CN 100596157C
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Abstract
The present invention discloses realizing stream media switching method. In Cell Multimedia Broadcast (CMB) service, local stream media server receives switching request of starting up local stream media living broadcast from local content management systems, then stopping receiving center living broadcasted global stream media and switching as receiving and retransmitting local living broadcast area stream media; after local stream media server detecting local living broadcast completion, said local stream media server ending local living broadcast service, and switching back receiving and retransmitting global stream media. The present invention also discloses a stream media server, through switching module set in local stream media server to control global/area stream media living broadcast switching and playing. The present invention ensures stream media living broadcast timelinest in CMB service.
Description
Technical field
The present invention relates to the mobile communication broadcast technology, refer to realize in a kind of cell multicast (CMB, Cell MultipleBroadcast) business method and the streaming media server that Streaming Media switches especially.
Background technology
Can realize multimedia broadcast multi-broadcasting business in third generation partner program version 6 (3GPP R6) agreement, but the R6 agreement does not have also to formulate to finish at present, ripe product is released market also needs the time of length.The product of Wideband Code Division Multiple Access (WCDMA) (WCDMA) R99, R4 agreement has been realized commercialization, but is merely able to provide point-to-point live streaming media and order program service for each user.
Given this, prior art provides cell multicast (CMB, Cell Multiple Broadcast) business, can realize broadcasting/packet service in WCDMA R99, R4 product under the contract.
The CMB business is multi-medium broadcast/group broadcast service (MBMS) business of the simplification carried out at the WCDMA system, and its characteristics are carried out the wireless multicast business exactly in existing WCDMA system.The advantage of CMB business is, a broadcasting Streaming Media can satisfy the demand of a plurality of user terminals, avoided clean culture (splitting) mode of present employing to take the problem of a large amount of wireless bandwidths.CMB wireless multicast network is made up of content supplier/service provider (CP/SP), mobile operator and mobile phone users.Wherein, the CP/SP tissue provides Streaming Media source, mobile operator to provide wireless multicast networking environment and Streaming Media transfer capability, mobile phone users to consume the CMB business by obtaining Streaming Media.At present, the most suitable business of carrying out of CMB business is exactly mobile terminal television such as mobile TV etc., promptly utilizes the multicast functionality of wireless environment, for mobile phone users provides visual broadcast service, realizes live streaming media.
Live streaming media comprises the live and local live two parts in center in the CMB business, and all can only play programmed content, can not play fresh content in real time.When emergency occurring, can not issue this emergency to the public immediately, and can only play this emergency content again by adjusting the Promgramming table in the somewhere.At present, live streaming media lacks ageing in the CMB business.
Fig. 1 is prior art center/local live streaming media principle schematic, as shown in Figure 1, the functional unit of center/local control flows medium living broadcast mainly comprises: CP/SP, Content Management System (CMS) and stream media system, live and control flows media system starts lively CP/SP by CMS issue, and stream media system is made streaming medium content and also issued this Streaming Media.Wherein, stream media system is made up of direct broadcast coder and streaming media server, streaming media server comprises media production subsystem (media creatorsubsystem) and media services subsystem (media service subsystem) two parts: audio analog signals is looked in the collection of media production subsystem responsible, with the analog signal conversion that collects is digital signal, and convert digital signal to meet the 3GPP/MP4 standard real-time transport protocol (rtp) Media Stream by direct broadcast coder, send this RTP Media Stream with clean culture or multicast form, perhaps convert the source media file to meet the 3GPP/MP4 standard media file and be stored in the central content storehouse (central content storage) by the off-line encoder; Analog live broadcasting device in the media services subsystem converts the media file that is stored in the central content storehouse to video/audio according to the analog live broadcasting channel table that has generated, sends this data with clean culture or multicast form.As shown in Figure 1, the center comprises center C P/SP, center C MS and center stream media system, and this locality comprises local CP/SP, local CMS and local stream media system.
Among Fig. 1, the direction of transfer of thick single arrow curve representation center live streaming media, center C P/SP starts the transmission Streaming Media by the control module in the center C MS control centre streaming media server; After center C P/SP received the startup response of the control module in the streaming media server of center, control centre's streaming media server started the center direct broadcast coder; Afterwards, under the control of center C MS, the center direct broadcast coder sends the medium delivery module of live media data in the streaming media server of center, medium delivery module receiving media data in the streaming media server of center also is transmitted to local streaming media server, local streaming media server will be transmitted to user terminal through wireless network from the media data of center streaming media server, finish the global flow medium living broadcast, realize CMB business of overall importance.Comprise control module and medium delivery module among Fig. 1 in the streaming media server of not shown center.
Specifically, the center comprises two kinds of the live and center analog live broadcastings in center to local center live streaming media.Wherein, the center is live to be with the analog signal from satellite TV, simulated television, the first-class type video and audio equipment of common shooting, convert the RTP Media Stream that digital video-audio signal and real-time coding become to meet the 3GPP/MP4 standard to, send to the local stream media system of assigned ip address with clean culture or multicast form; The center analog live broadcasting is with source media file such as mpeg2, avi or mpeg1 file, converts the target media file such as 3gp or the mp4 file that meet the 3GPP/MP4 standard to, sends to clean culture or multicast form on the local stream media system of assigned ip address.
Among Fig. 1, thick single arrow imaginary curve is represented the direction of transfer of local live streaming media, and what local live streaming media was realized is regional CMB business, and specific implementation is consistent with the center live streaming media, no longer repeats here.Local stream media system sends to radio network controller (RNC) with center live streaming media or the local live streaming media that receives; RNC sends to the live streaming media that receives on the multicast ip address and port of appointment; User terminal sends order request to RNC, obtains multicast ip address and port, after the adding multicast group, can obtain Media Stream by this multicast ip address and port.Local live streaming media comprises two kinds of local live and local analog live broadcastings equally, and specific implementation is live with the center respectively and the center analog live broadcasting is consistent, and no longer describing in detail just here, the related physical entity is on the different geographical position.Need to prove that local streaming media server comprises control module and medium sending module equally, and is not shown among Fig. 1.Control module in the local streaming media server receives the control from local CMS, and the medium sending module in the local streaming media server is used for to the Streaming Media of user's forwarding from center streaming media server or local direct broadcast coder.
For local stream media system, or forwarding realizes overall CMB business from the media data of center streaming media server; To be transmitted to user terminal through wireless network from the media data of local direct broadcast coder, and realize zone C MB business, unrelated between the dual mode, can only there be a kind of mode in independent existence and synchronization.When local stream media system retransmission center Streaming Media, even locally emergency occurs, can not issue this emergency to the public immediately in the somewhere, make that live streaming media lacks ageing in the CMB business.
The method of live streaming media from prior art CMB business, live streaming media can only be play programmed content, can not play fresh content in real time, especially, because it is not related between center live streaming media and the local live streaming media, can not realize the switching of the overall situation/regional live streaming media, emergency such as urgent notice appear in the somewhere, when local feature advertisement, local news etc., system can not issue this emergency to the public immediately, makes that live streaming media lacks the ageing demand that can not satisfy the local user in the CMB business.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes that Streaming Media switches, and can realize the switching of the overall situation/regional live streaming media, and live streaming media is ageing in the assurance CMB business, thereby satisfies local user's demand.
Another object of the present invention is to provide a kind of streaming media server, can realize the switching of the overall situation/regional live streaming media, live streaming media is ageing in the assurance CMB business, thereby satisfies local user's demand.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method that realizes that Streaming Media switches, this method comprises:
Local streaming media server receives the handoff request from the local live streaming media of startup of local Content Management System CMS, stops the live Streaming Media of receiving center, receives and transmit local live Streaming Media;
Described local streaming media server detects after local live streaming media playing finishes, and described local streaming media server finishes local live, receives and the live Streaming Media of retransmission center.
Described local streaming media server receives before the handoff request, and this method also comprises: described local streaming media server receives and the live Streaming Media of retransmission center.
This method also comprises: after described local streaming media server stops the live Streaming Media of receiving center, send the handover success response to local CMS.
This method also comprises: behind the live Streaming Media of described local streaming media server receiving center, send to switch to local CMS and finish response.
Described handoff request comprises: Streaming Media broadcast start time, Streaming Media sign, Streaming Media title, Streaming Media type and streaming media playing path.
When the local system time arrived described broadcast start time, described local streaming media server stopped the live Streaming Media of receiving center, received and transmit local live Streaming Media.
Described handoff request also comprises: Streaming Media English name and/or Streaming Media segment zero-time and/or streaming media playing duration.
Or streaming media playing duration.
Described handoff request comprises Streaming Media broadcast start time and streaming media playing duration, and the method that the local live streaming media playing of described detection is finished is:
Obtain to finish reproduction time according to described Streaming Media broadcast start time and streaming media playing duration, whether the described local streaming media server real-time monitoring system time arrives described end reproduction time, when system time arrived the end reproduction time, described local streaming media server detected local live streaming media playing and finishes;
Perhaps when described streaming media playing duration arrived, described local streaming media server detected local live streaming media playing and finishes.
A kind of streaming media server comprises control module and medium delivery module, also further is provided with the handover module that the control overall situation/regional live streaming media switches;
Be used for when the handoff request that receives from the local live streaming media of the startup of local CMS, notify described medium delivery module to stop to receive Streaming Media from the center stream media system, receive and transmit Streaming Media from local direct broadcast coder, detect after local live play finishes according to handoff request, control described medium delivery module and finish local direct broadcast service, switch tieback and receive and the live Streaming Media of retransmission center.
Being provided with described handover module between described handover module and the local CMS sends the handover success response or switches to described local CMS and finish being connected of response.
Described handover module is module independently, and perhaps described handover module is the logic function module with the control overall situation/regional live streaming media handoff functionality that increases in the described control module.
As seen from the above technical solution, the present invention is based on CMB wireless multicast network environment, in local streaming media server, be provided for controlling the handover module that the overall situation/regional live streaming media switches, handover module can be a module independently, also can be the logic function module with the control overall situation/regional live streaming media handoff functionality that increases in existing control module; Receive and the retransmission center Streaming Media at local streaming media server, when realizing that overall CMB is professional, if handover module in the local streaming media server or control module receive the handoff request from the local live streaming media of startup of local CMS, existing medium delivery module stops the live Streaming Media of receiving center in described handover module or the control module control flows media server, switch to and receive and transmit local live Streaming Media, and the transmission handover success responds to local CMS; When local streaming media server detects after local live play finishes according to handoff request, described handover module or control module are controlled described medium delivery module and are finished local direct broadcast service, switching tieback receives and the live Streaming Media of retransmission center, and to the response of local CMS transmission handover success, the local live real-time handed over service of notice is finished.
The present invention program, local operator can be on the basis that overall CMB business is provided, carry out regional CMB business voluntarily, utilize the live streaming media channel that has had certain influence power, transmit fresh content in real time, by the switching of the overall situation/regional live streaming media, guaranteed the ageing of live streaming media in the CMB business, thereby satisfied local user's demand.The CMB business that the present invention mentions can be mobile phone TV services etc.
Description of drawings
Fig. 1 is prior art center/local live streaming media principle schematic;
Fig. 2 is center of the present invention/local Streaming Media switching principle schematic diagram;
Fig. 3 is that the present invention realizes the flow chart that the center/local Streaming Media switches.
Embodiment
Core concept of the present invention is: local streaming media server receives the handoff request from the local live streaming media of startup of local CMS, stops the live global flow medium of receiving center, receives and transmit local live regional Streaming Media; After local streaming media server detected local live play and finishes, described local streaming media server finished local direct broadcast service, received and transmit the global flow medium.
The present invention realizes that by be provided for controlling the handover module that the overall situation/regional live streaming media switches in local streaming media server the switching of the overall situation/regional Streaming Media is play.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 2 is center of the present invention/local Streaming Media switching principle schematic diagram, in local streaming media server, be provided for controlling the handover module that the overall situation/regional live streaming media switches, handover module can be a module independently, also can be the logic function module with the control overall situation/regional live streaming media handoff functionality that increases in existing control module.Here suppose that handover module is a module independently.
As shown in Figure 2, if the handover module in the local streaming media server receives the handoff request from the local live streaming media of startup of local CMS, described handover module stops to receive global flow medium from the center stream media system according to existing medium delivery module in the handoff request control flows media server, receives and transmit from the regional Streaming Media of local direct broadcast coder to give the user; After handover module is finished switching, send the handover success response to local CMS; When handover module detects local live play and finishes according to handoff request after, controlling described medium delivery module finishes local live, switch the global flow medium that tieback is received and retransmission center is live and give the user, send to switch to local CMS and finish response, the local live real-time handed over service of expression is finished.
Fig. 3 is that the present invention realizes the flow chart that the center/local Streaming Media switches, and in conjunction with Fig. 2, describes the method that Streaming Media of the present invention switches in detail:
Step 300～step 301: the center streaming media server receives from after the live Streaming Media request in the startup center of center C MS, under the control of center C MS, the center direct broadcast coder is through center streaming media server and local streaming media server, stream medium data is transmitted to the user, realizes CMB business of overall importance.These two steps have realized the global flow medium living broadcast, and specific implementation belongs to prior art, no longer describe in detail here.
Step 302～step 303: local CMS sends the handoff request that starts local live streaming media to local streaming media server, local streaming media server is resolved this handoff request, when the local system time arrives switching time, suspend the live Streaming Media of receiving center, switch to and receive and transmit local live Streaming Media.
Can carry following attribute item in the handoff request:
Broadcast start time, the expression Streaming Media absolute time that begins to play, this attribute item is an essential option, can adopt character type to represent, form can adopt the year-moon-Ri hour: minute: second (yy-mm-ddhh:mm:ss).For the wheel broadcast mode, this attribute can be sky.When this property value was 00-00-0000:00:00, expression was play immediately;
The Streaming Media sign is used to identify the overall situation unique files in stream media or rtp streaming medium, and this attribute item is an essential option, can adopt character type to represent.Such as the rtp streaming medium is mobile TV program, and then Streaming Media is designated the programme televised live sign;
The Streaming Media title is used to identify the title of files in stream media or rtp streaming medium, and this attribute item is an essential option, can adopt character type to represent.Such as the rtp streaming medium is mobile TV program, and then the Streaming Media name is called the title of programme televised live;
The Streaming Media type, being used to identify live is files in stream media, or the rtp streaming medium, this attribute item is an essential option, can adopt INTEGER representation.Such as: this property value is 0 o'clock, and expression live broadcast stream media file is an analog live broadcasting, and this property value is 1 o'clock, represents live rtp streaming medium such as program;
The Streaming Media English name is used to identify the English name of files in stream media or rtp streaming medium, and this attribute item is an option, can adopt character type to represent;
The streaming media playing path is used to identify the broadcast path such as the uniform resource locator URL address of Streaming Media, and this attribute item is an essential option, can adopt character type to represent;
Streaming Media segment zero-time, only effective at files in stream media, be a relative time with respect to the files in stream media head.If this attribute item is set, represent that then this relative time from files in stream media begins to play; If this attribute item is not set, then is defaulted as from the files in stream media head and begins to play.This attribute item is an option, can adopt long to represent, form can adopt the year-moon-and Ri hour: minute: second (yy-mm-dd hh:mm:ss).When this property value was " 00-00-0000:00:00 ", expression was play immediately;
The streaming media playing duration, total duration of expression streaming media playing.If this attribute item is not set, for files in stream media, expression is played to this files in stream media and finishes, and for the rtp streaming medium, expression is ceaselessly play always, and the rtp streaming medium stop until the source.This attribute item is an option, can adopt long to represent.
The broadcast start time that just carry in the handoff request switching time of mentioning in this step,
Step 304: after streaming media server is finished switching, send the handover success response to local CM S.This step can be omitted.
Step 305: local direct broadcast coder is through local streaming media server, and the Streaming Media that this locality is live sends to the user.This step has realized regional live streaming media, and specific implementation belongs to prior art, no longer describes in detail here.What emphasize is, local streaming media server is according to the attribute item that carries in the handoff request, and the broadcast path of dependency item appointment is transmitted and specified the Streaming Media type, specifies the Streaming Media of Streaming Media sign and title to give the user.
Step 306: in regional streaming media playing process, whether the local streaming media server real-time monitoring system time arrives the end reproduction time, when system time arrive to finish reproduction time, local streaming media server stopped local live Streaming Media, and it is live to switch go back to the center again.
In this step, suppose the streaming media playing duration attribute item that carries in the handoff request, described end reproduction time is to obtain according to Streaming Media broadcast start time that carries in the handoff request and streaming media playing duration, and promptly Streaming Media broadcast start time and streaming media playing duration sum obtain finishing reproduction time.
In addition, local streaming media server also can be set according to the streaming media playing duration and regularly finish local lively, when promptly the streaming media playing duration arrives, stops local live Streaming Media, and it is live to switch go back to the center again.
Step 307: streaming media server sends switching to local CM S and finishes response after switching the live Streaming Media in tieback receipts center.This step can be omitted.
Step 308 has realized the global flow medium living broadcast, belongs to prior art, no longer repeats here.
What the inventive method was emphasized is, in local stream media system, realized the switching of global flow medium living broadcast and regional live streaming media, under the prerequisite of use habit that does not change user terminal and method, local operator can be on the basis that overall CMB business is provided, carry out regional CMB business voluntarily, utilize the live streaming media channel that has had certain influence power, transmit fresh content in real time, realized the switching of the overall situation/regional live streaming media, guarantee the ageing of live streaming media in the CMB business, thereby satisfied local user's demand.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. method that realizes that Streaming Media switches is characterized in that this method comprises:
Local streaming media server receives the handoff request from the local live streaming media of startup of local Content Management System CMS, stops the live Streaming Media of receiving center, receives and transmit local live Streaming Media;
Described local streaming media server detects after local live streaming media playing finishes, and described local streaming media server finishes local live, receives and the live Streaming Media of retransmission center.
2. method according to claim 1 is characterized in that, described local streaming media server receives before the handoff request, and this method also comprises: described local streaming media server receives and the live Streaming Media of retransmission center.
3. method according to claim 1 is characterized in that, this method also comprises: after described local streaming media server stops the live Streaming Media of receiving center, send the handover success response to local CMS.
4. method according to claim 1 is characterized in that, this method also comprises: behind the live Streaming Media of described local streaming media server receiving center, send to switch to local CMS and finish response.
5. method according to claim 1 is characterized in that, described handoff request comprises: Streaming Media broadcast start time, Streaming Media sign, Streaming Media title, Streaming Media type and streaming media playing path.
6. method according to claim 5 is characterized in that, when the local system time arrived described broadcast start time, described local streaming media server stopped the live Streaming Media of receiving center, receives and transmit local live Streaming Media.
7. method according to claim 5 is characterized in that, described handoff request also comprises: Streaming Media English name and/or Streaming Media segment zero-time and/or streaming media playing duration.
8. method according to claim 3 is characterized in that, described handoff request comprises Streaming Media broadcast start time and streaming media playing duration, and the method that the local live streaming media playing of described detection is finished is:
Obtain to finish reproduction time according to described Streaming Media broadcast start time and streaming media playing duration, whether the described local streaming media server real-time monitoring system time arrives described end reproduction time, when system time arrived the end reproduction time, described local streaming media server detected local live streaming media playing and finishes;
Perhaps when described streaming media playing duration arrived, described local streaming media server detected local live streaming media playing and finishes.
9. a streaming media server comprises control module and medium delivery module, it is characterized in that, also further is provided with the handover module that the control overall situation/regional live streaming media switches;
Be used for when the handoff request that receives from the local live streaming media of the startup of local CMS, notify described medium delivery module to stop to receive Streaming Media from the center stream media system, receive and transmit Streaming Media from local direct broadcast coder, detect after local live play finishes according to handoff request, control described medium delivery module and finish local direct broadcast service, switch tieback and receive and the live Streaming Media of retransmission center.
10. streaming media server according to claim 9 is characterized in that, is provided with described handover module between described handover module and the local CMS and sends the handover success response or switch to described local CMS and finish being connected of response.
11. according to claim 9 or 10 described streaming media servers, it is characterized in that, described handover module is module independently, and perhaps described handover module is the logic function module with the control overall situation/regional live streaming media handoff functionality that increases in the described control module.
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| CN200510135981A CN100596157C (en) | 2005-12-29 | 2005-12-29 | Method for realizing stream media switching and stream media server |
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| CN200510135981A CN100596157C (en) | 2005-12-29 | 2005-12-29 | Method for realizing stream media switching and stream media server |
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| CN100596157C true CN100596157C (en) | 2010-03-24 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340428A (en) * | 2007-07-05 | 2009-01-07 | 华为技术有限公司 | Method and system for providing media stream in process of media server switching |
| CN101399844B (en) * | 2007-09-26 | 2012-03-07 | 中兴通讯股份有限公司 | Method for fast switching content in mobile stream media service |
| CN101242581B (en) * | 2008-02-28 | 2011-04-06 | 华为技术有限公司 | Mobile stream media managing method, system and device |
| CN101547143B (en) * | 2008-03-28 | 2012-10-03 | 华为技术有限公司 | Method and device for switching streaming media service |
| CN101626396B (en) * | 2008-07-08 | 2014-01-08 | 华为技术有限公司 | Method, device and system for building multi-user service and controlling channel transfer |
| CN101540947B (en) * | 2009-04-03 | 2011-12-07 | 中兴通讯股份有限公司 | Analog live broadcasting method of mobile streaming media and content switching method thereof |
| CN106937131B (en) * | 2017-03-31 | 2021-02-19 | 广州方硅信息技术有限公司 | Video stream switching method, device and equipment |
| US10237584B2 (en) * | 2017-04-17 | 2019-03-19 | Sony Interactive Entertainment LLC | Real-time incorporation of user-generated content into third-party content streams |
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