WO2010045830A1 - Procédé et appareil pour la mise en oeuvre d'un service de flux multimédia - Google Patents

Procédé et appareil pour la mise en oeuvre d'un service de flux multimédia Download PDF

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Publication number
WO2010045830A1
WO2010045830A1 PCT/CN2009/073847 CN2009073847W WO2010045830A1 WO 2010045830 A1 WO2010045830 A1 WO 2010045830A1 CN 2009073847 W CN2009073847 W CN 2009073847W WO 2010045830 A1 WO2010045830 A1 WO 2010045830A1
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WO
WIPO (PCT)
Prior art keywords
streaming media
user equipment
protocol
streaming
connection
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Application number
PCT/CN2009/073847
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English (en)
Chinese (zh)
Inventor
刘轶
仝庆贻
龚旭晖
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2010045830A1 publication Critical patent/WO2010045830A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]

Definitions

  • the present invention relates to the field of communications, and in particular to a method and an apparatus for implementing a streaming media service.
  • BACKGROUND Stream media is a multimedia file transmitted by an application stream technology on a network.
  • the so-called streaming technology is a network in which continuous image and sound information is compressed and placed on the website server, allowing users to watch and listen while downloading, without having to wait until the entire compressed file is downloaded to their own machine.
  • Transmission technology. Streaming media has the following characteristics:
  • the client receives, processes, and plays back a streaming media file, but the file does not reside on the client, does not occupy the storage space of the client, and is cleared after streaming media processing and playback.
  • Streaming media is a media format that uses variable bandwidth technology to play on the Internet in a "streaming" manner, such as audio, video or multimedia files, enabling people to operate from 28 kbit/s to 1200 kbit/s.
  • Audio, video or multimedia files enabling people to operate from 28 kbit/s to 1200 kbit/s.
  • streaming media technology has been widely used in multimedia news release, online live broadcast, online advertising, e-commerce, video on demand, telemedicine, Internet radio, real-time video conferencing and other information on the Internet.
  • Streaming media can be divided into unicast, broadcast and multicast.
  • unicast means that a separate data channel needs to be established between the client and the media server.
  • the data packets sent from one server can only be transmitted to one.
  • Client computer. Broadcast refers to the passive reception of streaming media by users. During the broadcast process, the client receives streaming media but cannot control streaming media.
  • Multicast Internet Protocol (Internet Protocol)
  • the multicast technology builds a multicast-capable network that allows routers to replicate packets to multiple channels at once. With multicast, a single server can simultaneously send continuous data streams to hundreds of thousands of clients without delay. The media server only needs to send one packet, not multiple; all requesting clients share the same packet. According to the playback mode of streaming media content, it is divided into download and play, on-demand and live broadcast.
  • Download Play The user downloads and stores the streaming media content to the local terminal, and then can choose to play at any time.
  • Streaming on-demand The content provider pre-edits, compresses, and compresses a piece of multimedia content to form a file in a specified format, and then stores it on the streaming server. The user selects the content file on the streaming server as needed to play.
  • Streaming media broadcast When the terminal player plays streaming live content, the content playing time is the same as the content source event. That is, the streaming media encoding server compresses and encodes the content source in real time, and sends it to the user terminal via the streaming server.
  • 1 is a block diagram of a streaming media protocol according to the related art. The protocol composition of a streaming media service is as shown in FIG.
  • the ten-transmission protocol includes: HyperText Transfer Protocol (HTTP) / Transmission Control Ten Control (Transmission Control Protocol) is a User Datagram Protocol (User Datagram Protocol) called UDP.
  • HTTP is mainly used to discover streaming media content and obtain real-time streaming media protocol (Real Time)
  • Streaming Protocol called RTSP
  • the universal resource locator Uniform Resource Locator
  • MIME Multi-purpose Internet Mail Extension
  • SDP Session Description Protocol
  • HTTP can also be used to transfer content such as still images and text in streaming media, and is used for audio and video downloads.
  • the HTTP protocol requirements are in accordance with RFC2616 and 3GPP TS 26.234.
  • MIME is the type of file used to mark the transfer. It is mainly used for booting the player in the streaming media.
  • RTSP mainly establishes session description information (DESCRIBE), establishes streaming media connection (SETUP), content playback (PLAY), connection pause (PAUSE) and connection abort (TEARDOWN) control messages to achieve streaming media session establishment, playback, pause , abort, etc.
  • the RTSP protocol requirements are in accordance with RFC 2326 and 3GPP TS 26.234.
  • the Real Time Transport Protocol (RTP) is mainly used to transport media content such as video, audio and voice in streaming media.
  • the RTP protocol requirements are compliant with RFC3550 and 3GPP TS 26.234.
  • the Real Time Control Protocol (RTCP) is mainly used for traffic control and congestion control between the server and the client.
  • each participant periodically transmits RTCP packets, which contain statistics such as the number of transmitted packets and the number of lost packets.
  • the server can use this information to dynamically change the transmission rate.
  • RTP works with RTCP to optimize transmission efficiency with efficient feedback and minimal overhead.
  • the RTCP protocol requirements are compliant with RFC3550 and 3GPP TS 26.234.
  • SDP is a format (protocol) used for session description. It is not a transport protocol, nor is it included in the codec of the media. It is a notification protocol for transmitting messages between different transport protocols. Its main purpose is It is to solve the multimedia session notification, invitation and session initialization work.
  • the SDP file can be passed to the player either by a response to the user's HTTP request or by a response to the user's RTSP DESCRIBE request.
  • the SDP protocol requirements are in accordance with RFC 2327 and 3GPP TS 26.234.
  • WCDMA Wide Code Division Multiple Access
  • a major advantage of WCDMA technology is that it can provide high-speed packet domain (Packet Switching).
  • HSDPA High Speed Downlink Packet Access
  • WCDMA wireless data cards For the PS) service, its High Speed Downlink Packet Access (HSDPA) downlink rate can reach 7.2M.
  • HSDPA High Speed Downlink Packet Access
  • WCDMA wireless data cards For the high rate characteristics of the PS domain, WCDMA wireless data cards have been widely used. However, the functions of the currently used wireless data cards are too numerous, and the main functions are limited to the MODEM Internet access, as well as the short message service (SMS) and voice call. While providing high-speed rates, WCDMA networks also provide users with a wealth of applications. However, current wireless data card users cannot enjoy these rich applications due to the single function of network cards. If you need to enjoy these applications, you need to purchase dedicated applications. The terminal increases the user's overhead.
  • a streaming media service implementation method is provided.
  • the method for implementing the streaming media service includes: the user equipment establishes a radio bearer with the core network through the wireless data card; the user equipment establishes a connection with the streaming media server according to the established radio bearer; and the user equipment receives the streaming media.
  • the server streams the streaming data and plays the streaming data stream.
  • the method further comprises: the user equipment receiving the session description protocol file of the streaming media data stream from the streaming media server.
  • the process for the user equipment to establish a connection with the streaming media server according to the established radio bearer specifically includes: the user equipment establishes a real-time streaming media protocol connection with the streaming media server according to the session description protocol file.
  • the processing of the user equipment receiving the streaming media data stream from the streaming media server comprises: the user equipment establishes a real-time streaming protocol connection with the streaming media server, and performs real-time transmission protocol port negotiation with the streaming media server; the user equipment receives the stream from the stream Real-time transport protocol data for the media server.
  • a streaming media service implementing apparatus is also provided.
  • the streaming media service implementation apparatus includes: a radio bearer establishing module, configured to establish a radio bearer with a core network by using a wireless data card; and a connection establishing module, configured to perform radio bearer and flow according to the established data of the user equipment.
  • the media server establishes a connection; the receiving and playing module is configured to receive, by the user equipment, the streaming media data stream from the streaming media server, and play the streaming media data stream.
  • connection establishing module further comprises: a session description protocol file receiving module, a session description protocol file for receiving a streaming media data stream from the streaming media server; a real-time streaming media protocol connection establishing module, configured to receive according to the receiving module
  • the session description protocol file establishes a real-time streaming protocol connection with the streaming server.
  • the receiving and playing module specifically includes: a port negotiation module, configured to perform real-time transmission protocol port negotiation with the streaming media server; a data receiving module, configured to receive real-time transmission protocol data from the streaming media server; and a playing module, configured to play Transfer protocol data in real time.
  • FIG. 1 is a block diagram of a streaming media protocol structure according to the related art
  • FIG. 2 is a flowchart of a method for implementing a streaming media service according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a method according to the present invention.
  • FIG. 4 is a block diagram of a streaming media service implementing apparatus according to an embodiment of the present invention
  • FIG. 5 is a flow through a wireless network card according to an embodiment of the present invention;
  • a block diagram of the media function protocol. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings.
  • the present invention provides a streaming media service implementation solution, and the processing principles of the solution are as follows: Considering the problem that the wireless data card function in the related art is not compatible with a plurality of applications and the application of the application is increased.
  • the streaming media service is implemented by using the wireless data card as a wireless implementation tool, and the streaming data stream received from the wireless network card is parsed and played in the playing area of the computer PC software, so that the function of the streaming media service can be realized in the PC.
  • a streaming media service implementation method is provided.
  • 2 is a flowchart of a method for implementing a streaming media service according to an embodiment of a method according to the present invention. As shown in FIG. 2, the method includes: (Steps S202-S206): Step S202: A user equipment establishes a radio bearer with a core network by using a wireless data card.
  • wireless data card wireless network card
  • it is required to support the PS domain call service, and an interface module of the same network card PC software is required on the network card side, which is responsible for parsing the commands sent by the PC software and transmitting and receiving the data of the streaming media.
  • PC software On the PC software of the network card, an operation interface needs to be provided to the user, and the user can initiate a streaming media service through the operation interface. And the streaming media data stream received from the wireless network card can be parsed and played in the playing area of the computer PC software.
  • Step S204 The user equipment establishes a connection with the streaming media server according to the established radio bearer.
  • Step S206 The user equipment receives the streaming media data stream from the streaming media server, and plays the streaming media data stream.
  • FIG. 3 is a preferred embodiment of the RTSP/RTP-based streaming media service according to the method embodiment of the present invention.
  • Process flow chart As shown in Figure 3, a successful call flow mainly includes the following four phases: content discovery, connection establishment, content playback, and connection suspension.
  • the process includes the following processing: Content discovery step S302, the user operation triggers the network card to complete the establishment of the wireless load. For example, browse the web.
  • Step S304 the user clicks on a certain streaming media content on the portal through the PC, and the browser sends the content to the portal. From the HTTP Get command (including user agent, User Agent).
  • the mouth-of-mouth browser obtains the RTSP link of the streaming media content from the web server through the HTTP 200 OK response message, and the user clicks the link, and the PC software of the network card activates the streaming media player. If the browser obtains the HTTP link of the SDP file from the web server through the HTTP 200 OK response message, and the user clicks the link, the PC software of the network card requests the SDP file from the streaming server. The server returns the SDP file, obtains the RTSP link of the streaming media content, and the PC software of the network card activates the streaming media player.
  • the connection establishment step S306 acquires session description information (DESCRIBE).
  • the player on the PC software side requests the SDP through the DESCRIBE command of the RTSP protocol.
  • the server provides the description information of the streaming media content in the response.
  • the SDP text message tells the player the multimedia session information, which mainly includes: the protocol version. Creator and session ID, session name, session activation time, media name transfer address, and other information. If the server has returned an SDP file via an HTTP response, the player no longer sends a DESCRIBE request. Step S308, establishing a streaming media connection (SETUP).
  • the player on the PC software side establishes an RTSP connection with the media server according to the information of the SDP.
  • the SETUP message must include the session identifier and the transport protocol (RTP) port number of the player.
  • the media server After receiving the information, the media server provides the RTP port number of the response server, and finally completes the dynamic 1" business of the RTP port.
  • Content Play (PLAY) Step S310 the player on the PC software side issues a play command in the RTSP to the server side.
  • the PLAY message must include a session identifier, a time start point, a media server session identifier, and a media play time.
  • Step S312 The media server transmits the media content to the player of the PC software through the RTP.
  • the network card is only a wireless bearer function.
  • All the received RTP data is forwarded to the streaming media player of the PC software.
  • the PC software decodes and plays the RTP data.
  • the connection is aborted (TEARDOWN) Step S314, after the normal playing of the media is completed, or when the user actively suspends playing or actively closes the player (excluding the user to pause playing), the streaming media player on the PC software side must issue an abort command in the RTSP protocol to the server.
  • the server receives a 200 OK response after receiving it.
  • the streaming media service is implemented by using the wireless data card as an implementation tool of the wireless bearer, and the streaming media service can be implemented on the PC.
  • a streaming media service implementing apparatus is also provided.
  • 4 is a block diagram of a streaming media service implementation apparatus according to an embodiment of the present invention.
  • the streaming media service implementation apparatus includes: a radio bearer establishing module 10, configured to The data card establishes a radio bearer with the core network; the connection establishing module 20 is connected to the radio bearer establishing module 10, and is configured to establish a connection between the user equipment and the streaming media server according to the established radio bearer; and the receiving and playing module 30 is connected to the connection establishing module 20 And for the user equipment to receive the streaming media data stream from the streaming server, and play the streaming media data stream.
  • the connection establishing module 20 may include: a session description protocol file receiving module (not shown), a session description protocol file for receiving a streaming media data stream from the streaming media server; a real-time streaming media protocol connection establishing module (not shown), configured to establish a real-time streaming protocol connection with the streaming server according to the session description protocol file received by the receiving module.
  • the receiving and playing module 30 specifically includes: a port negotiation module (not shown) for performing real-time transmission protocol port negotiation with the streaming server; and a data receiving module (not shown) for receiving real-time from the streaming server Transmission protocol data; a playback module (not shown) for playing real-time transport protocol data.
  • FIG. 5 is a structural block diagram of a streaming media function protocol stack implemented by a wireless network card according to an embodiment of the present invention.
  • the implementation of the streaming media is divided into four parts according to the module.
  • Part A is a multimedia function that is ported from the terminal side supporting streaming media to the PC side
  • Part B can be implemented by using the protocol stack on the network card. Considering the processing efficiency in the application process, it is recommended that this part be also implemented on the PC side.
  • Part C is a control interface module on the same PC side that is added to the network card in order to implement the streaming function.
  • Part D establishes a ten-party part for the wireless bearer of the network card itself.
  • Part A includes: Module 1 (Video, Audio, Speech Resolution Playback and Corresponding Link Status Reporting), Module 2 (Implementing Capabilities Exchange, Scene Description, Still Images, Bitmaps, Vectors, Text, Synchronized Text, Composite Audio) ), Module 3 (Complete Control Message, Session Description (SDP)).
  • Module 1 Video, Audio, Speech Resolution Playback and Corresponding Link Status Reporting
  • Module 2 examplementing Capabilities Exchange, Scene Description, Still Images, Bitmaps, Vectors, Text, Synchronized Text, Composite Audio
  • Module 3 Complete Control Message, Session Description (SDP)).
  • This part needs to be implemented on the PC software side corresponding to the wireless network card.
  • Part B is the ten-party part of streaming media, including RTP/RTCP, HTTP and RTSP. The content of this part of the protocol can be implemented on the PC software side or on the network card. Considering the processing efficiency in the application process, it is implemented in the PC software in this solution.
  • Part C is the transport protocol
  • Part D is mainly a network card control interface module for analyzing the control commands sent by the PC side to increase the streaming media function on the PC side.
  • Part E is the functional module of the network card itself.
  • the streaming media service is implemented by using the wireless data card as an implementation tool of the wireless bearer, and the streaming media data received from the wireless data card can be streamed in the playing area of the computer PC software. Play, which improves the user experience and saves the user's expense.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Abstract

La présente invention concerne un procédé et un appareil pour la mise en oeuvre d'un service de flux multimédia, ledit procédé se déroulant comme suit: un équipement utilisateur établit une porteuse radio avec un réseau central par le biais d'une carte de données radio; l'équipement utilisateur établit une connexion avec un serveur de flux multimédia en fonction de la porteuse radio établie; l'équipement utilisateur reçoit un flux de données multimédia en continu du serveur de flux multimédia et reproduit le flux de données multimédia en continu. Cette invention permet d'améliorer l'expérience utilisateur des utilisateurs.
PCT/CN2009/073847 2008-10-21 2009-09-09 Procédé et appareil pour la mise en oeuvre d'un service de flux multimédia WO2010045830A1 (fr)

Applications Claiming Priority (2)

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CN200810169489.XA CN101399836A (zh) 2008-10-21 2008-10-21 流媒体业务实现方法及装置
CN200810169489.X 2008-10-21

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WO2010045830A1 true WO2010045830A1 (fr) 2010-04-29

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Cited By (1)

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CN111629250A (zh) * 2020-05-28 2020-09-04 海信视像科技股份有限公司 一种显示设备及视频播放方法

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CN101399836A (zh) * 2008-10-21 2009-04-01 中兴通讯股份有限公司 流媒体业务实现方法及装置

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CN111629250A (zh) * 2020-05-28 2020-09-04 海信视像科技股份有限公司 一种显示设备及视频播放方法

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