WO2008043213A1 - Système de diffusion mobile multimédia destiné à augmenter l'efficacité de transmisstion au moyen d'une trame à longueur variable et procédé associé - Google Patents

Système de diffusion mobile multimédia destiné à augmenter l'efficacité de transmisstion au moyen d'une trame à longueur variable et procédé associé Download PDF

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Publication number
WO2008043213A1
WO2008043213A1 PCT/CN2006/003781 CN2006003781W WO2008043213A1 WO 2008043213 A1 WO2008043213 A1 WO 2008043213A1 CN 2006003781 W CN2006003781 W CN 2006003781W WO 2008043213 A1 WO2008043213 A1 WO 2008043213A1
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WO
WIPO (PCT)
Prior art keywords
component
data
video
audio
length
Prior art date
Application number
PCT/CN2006/003781
Other languages
English (en)
Chinese (zh)
Inventor
Xiangbiao Yan
Can Shen
Rong Li
Original Assignee
Zte Corporation
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
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2008043213A1 publication Critical patent/WO2008043213A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • 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
    • H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
    • 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
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to multimedia broadcast technologies, and in particular to a multimedia broadcast system and method for improving transmission efficiency by using variable length data frames.
  • BACKGROUND OF THE INVENTION Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. With a handheld terminal, you can watch TV at high speeds. The terminal receives the program list through the wireless protocol, and can select the channel that has the right to watch, so that the multimedia data of the selected channel can be accepted, and the television is watched on the mobile terminal.
  • the mobile multimedia broadcast system is divided into different channels, and the media data stream of each channel may include a video data component, an audio data component, and an ancillary data component, which need to be transmitted on a channel of the mobile multimedia broadcast system through a multiplexing technology, and the terminal can receive Related components, and play on the terminal.
  • the transport stream TS mode which is one of the Moving Picture Experts Group MPEG standards, which places video data components, audio data components, and ancillary data components.
  • a packet with a fixed length of 188 bytes is transmitted, and clock synchronization is implemented by transmitting a clock correction packet.
  • the real-time transport protocol RTP mode is a method for transmitting media data streams in an IP network.
  • the size of the packets is not fixed.
  • the time stamp of each packet header is used to ensure the time synchronization of the play, and the sequence of the packets is guaranteed by the serial number.
  • the existing methods have their own advantages and disadvantages.
  • the RTP mode can only be used on an IP network.
  • the TS mode uses a fixed length, resulting in a relatively low transmission efficiency, often less than 90%.
  • the monthly network can provide a wide range of wireless bandwidth for mobile terminals. To meet the clear display of the terminal, there must be sufficient transmission rate. However, the lower transmission efficiency will inevitably reduce the actual transmission rate. Business requirements for mobile multimedia broadcasting.
  • the technical problem to be solved by the present invention is to provide a mobile multimedia broadcast system and a method thereof for improving communication efficiency by using a frame structure, which can improve the transmission efficiency of a multimedia data stream and meet the requirements of mobile multimedia broadcast.
  • the above first technical problem of the present invention is solved by providing a mobile multimedia broadcast system that uses a variable length data frame to transmit a multimedia data stream to a mobile terminal within its coverage; the variable length data frame includes a packet header and A payload comprising one or more of a video component, an audio component, and an ancillary data component; the packet header including a component flag indicating the presence or absence of the video component, the audio component, and the ancillary data component in the data frame.
  • the header includes component parameters, component flags, and the video component, the audio component, and the ancillary data component.
  • component parameters corresponding to the video component include the length of the video data component, the encoding type and rate of the video data component.
  • component parameters corresponding to the audio component include the length of the audio data component, the encoding type and rate of the audio data component.
  • component parameters corresponding to the ancillary data component include the length of the ancillary data component, the type and rate of the ancillary data component.
  • the toe cap further includes a length of the toe cap.
  • Another technical problem of the present invention is to provide a mobile multimedia broadcasting method, which uses a mobile multimedia broadcasting system to complete transmission of a multimedia data stream by using a variable length data frame;
  • the variable length data frame includes a packet header and includes a video component, and audio a variable length payload of all or part of the component and the ancillary data component;
  • the header includes a component flag indicating the presence or absence of the video component, the audio component, and the ancillary data component in the data frame;
  • the method includes the following corresponding steps :
  • the service network assembles one or more of the video component, the audio component, and the ancillary data component that need to be transmitted over a period of time in accordance with the structure of the variable length data frame;
  • the mobile terminal receives and then disassembles the variable length data frame according to the component flag, and takes out the video component, the audio component or the ancillary data component, and then processes.
  • the need to transmit may be one, two or all of a video component, an audio component and an ancillary data component.
  • the header further includes a header length and a component parameter, the component parameter corresponding to the component flag and the video component, the audio component, and the ancillary data component.
  • the component parameters include the length, type or encoding type and rate of the corresponding component.
  • the method further includes the mobile terminal selecting only the corresponding processing play program of the existing component according to the component flag.
  • the invention provides a mobile multimedia broadcast system and a method thereof for improving transmission efficiency by using variable length frames, which are efficiently transmitted in one channel by encapsulating components of the multimedia data stream, and each component needs to transmit component parameters in the packet header, the component The parameters are used to provide the mobile terminal to play components.
  • the channel resources of the multimedia broadcast system are saved, and a component flag is indicated in the packet header to indicate components in the media data stream.
  • the component flag is used to clearly indicate the composition of the media data stream, only the necessary components and component parameters are transmitted, avoiding unnecessary component and component parameters, and improving the transmission efficiency of the multimedia broadcasting system, for example, only the audio component is transmitted in the audio broadcast channel.
  • Audio component parameters only parameters of the audio component in the header, no parameters of the video data component and parameters of the auxiliary data component, reducing the overhead of the package and improving the efficiency of the package; and the component indication can also guide the receiving terminal of the multimedia broadcast to play the program, Only the player of the channel media data stream component is used in the terminal, and it is not necessary to use the playing program of all components, so that the terminal can save more power and prolong the battery life of the mobile terminal.
  • FIG. 1 is a schematic diagram showing the structure of a multimedia data stream transmission frame adopted by the multimedia broadcasting system and method of the present invention.
  • 2 is a schematic diagram showing the structure of a packet header in the frame structure shown in FIG. 1.
  • FIG. 3 is a schematic diagram showing the internal logical relationship between the video data component and the corresponding portion of the packet header in the frame structure shown in FIG. 1.
  • 4 is a schematic diagram showing the internal logical relationship between the audio data component and the corresponding portion of the packet header in the frame structure shown in FIG. 1.
  • FIG. 1 is a schematic diagram showing the structure of a multimedia data stream transmission frame adopted by the multimedia broadcasting system and method of the present invention.
  • FIG. 3 is a schematic diagram showing the internal logical relationship between the video data component and the corresponding portion of the packet header in the frame structure shown in FIG. 1.
  • 4 is a schematic diagram showing the internal logical relationship between the audio data component and the corresponding portion of the packet header in the frame structure shown in FIG. 1.
  • FIG. 5 is a schematic diagram showing the internal logical relationship between the ancillary data component and the corresponding portion of the packet header in the frame structure shown in FIG. 1.
  • DETAILED DESCRIPTION OF THE INVENTION The key to the present invention is the component flags, component parameters and components that are combined into a complete package, the component flags and component parameters are placed in the header, and the component acts as a payload for the package.
  • the component flags indicate whether the package contains the corresponding component parameters and components.
  • the present invention encapsulates one or more components of a multimedia data stream to achieve high efficiency of data transfer, including the following:
  • the multimedia broadcasting system has multiple channels, each of which transmits the media data stream of the channel.
  • a certain data stream of the channel may include a video data component, an audio data component, and an auxiliary data component
  • the media t data stream may be composed of one component or several components, for example, the media data stream includes only the video data component and Audio data component, no ancillary data component; or media data stream only audio data component and ancillary data component.
  • the media data stream uses a flexible encapsulation format consisting of a packet header, a video data component, an audio data component, and an ancillary data component.
  • the header is a parameter describing the media data stream of the channel, including the length information of the packet header, the component flag information of the media data stream, the parameters of the component, and the like.
  • the component flags of the media data stream include a frequency data component flag, an audio data component flag, and an ancillary data component flag.
  • the video data component flag is used to indicate whether the video data stream of the channel includes a video data component;
  • the audio data component flag is used to indicate whether the audio data component is included in the media data stream of the channel;
  • the accessory data component flag is used to indicate the channel Whether the auxiliary data component is included in the media data stream;
  • the component parameter in the packet header is determined by the component flag. If the video data component flag indicates that the media data stream of the channel includes the video data component, the media data stream packet header includes the video component. Parameters such as the length of the video data component, the encoding type and rate of the video data component, etc.; if the audio data component flag indicates that the audio data component is included in the media data stream of the channel, the media data stream packet header contains parameters of the audio component, Such as the length of the audio data component, the encoding type and rate of the audio data component, etc.; if the ancillary data component flag indicates that the media data stream of the channel contains an ancillary data component, the media data stream header contains parameters of the ancillary data component, such as an attachment Parameters such as the length of the data component, the type and rate of the ancillary data component;
  • the method for packaging the video data component, the audio data component, and the accessory data component in the multimedia broadcast media stream is specifically shown in FIG. 1.
  • the mobile multimedia broadcast has multiple channels 3, and each channel 3 transmits media data streams of different programs.
  • the encapsulated media stream is composed of a packet header 10, a video data component 21, an audio data component 22, and an ancillary data component 23, each component needs to transmit component parameters in the packet header, and the component parameters are used when being provided to the playback component of the mobile terminal, Reduce the transmission of redundant components and component parameters, save channel resources of the multimedia broadcast system, and have component flags in the header to indicate the components in the media data stream.
  • the media data stream is composed of a packet header 10 and a payload 20, wherein the packet header 10 is mainly some control information and must be provided.
  • the specific content is:
  • Header length information 101 Indicates the length of the packet header.
  • the component parameter 105 may include a video data component parameter 1051, including: a length of the video data component, a video encoding algorithm type, a video encoding bit rate, a video frame rate, a video horizontal resolution, a video vertical resolution, and the like.
  • the component parameter 105 may include an audio data component parameter 1052, including: an audio data component length, a coding algorithm type, an encoding rate, a sampling rate, and the like.
  • Component parameters 105 which may include ancillary data component parameters 1053, including: the length of the ancillary data component, the type of the ancillary data component, and the like.
  • the payload 20 includes a video data component 21, an audio data component 22, and an ancillary data component 23.
  • video data component flag 102 is used to indicate that video data component 1051 is included in the media data stream, while indicating the parameters of the video data component in the header.
  • the audio data component flag 103 is used to indicate that the audio data component 1052 is included in the media data stream, while indicating the parameters of the audio data component contained in the packet header.
  • the affiliate data component flag 104 is used to indicate that the media data stream includes the ancillary data component 1053, while indicating the parameters of the subordinate data component in the header.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de diffusion mobile multimédia destiné à augmenter l'efficacité de transmisstion au moyen d'une trame à longueur variable et procédé associé, où le système transmettant le flux de données multimédia au terminal mobile utilise une trame de données à longueur variable provenant du serveur réseau pour couvrir la zone; dans ce procédé, le serveur réseau encapsule le composant vidéo, le composant audio et le composant de données auxiliaires requises à des fins de transmission dans un intervalle correspondant à une trame de données à longueur variable à transmettre; un terminal mobile recevant et dégroupant la trame de données à longueur variable basée sur l'indication du composant permettant d'extraire les composants encapsulés, les composants encapsulés sont ensuite traités séparément; la trame de données à longueur variable comprend une tête de paquet (10) comprenant des indications et des charges utiles (20) comprenant un ou plusieurs composants vidéo (21), audio (22) et accidentels (23). Le système et le procédé permettent de transmettre efficacement un flux de données multimédia dans un canal au moyen de composants d'encapsulation, et au grâce aux indications du composant permettent de transmettre uniquement le composant requis et le programme de lecture du composant requis correspondant à un appel dans le terminal mobile, ce qui permet d'améliorer l'efficacite de transmission, de sauvegarder la puissance du terminal mobile et de mieux satisfaire les besoins du service multimédia.
PCT/CN2006/003781 2006-09-28 2006-12-30 Système de diffusion mobile multimédia destiné à augmenter l'efficacité de transmisstion au moyen d'une trame à longueur variable et procédé associé WO2008043213A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006101410051A CN100561931C (zh) 2006-09-28 2006-09-28 采用变长帧提高传送效率的移动多媒体广播系统及其方法
CN200610141005.1 2006-09-28

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WO2008043213A1 true WO2008043213A1 (fr) 2008-04-17

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WO (1) WO2008043213A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9319737B2 (en) 2010-01-05 2016-04-19 Qualcomm Incorporated Transport layer modification to enable transmission gaps
US9942606B2 (en) 2010-01-05 2018-04-10 Qualcomm Incorporated Application layer modification to enable transmission gaps
KR20130040090A (ko) 2011-10-13 2013-04-23 삼성전자주식회사 복합 네트워크에서 멀티미디어 데이터를 전송하기 위한 장치 및 그 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1294798A (zh) * 1999-03-01 2001-05-09 松下电器产业株式会社 可变长帧发送装置及可变长帧发送方法
CN1316139A (zh) * 1999-05-24 2001-10-03 三星电子株式会社 移动通信系统中根据无线链路协议交换可变长度数据的装置和方法
US6711177B1 (en) * 1999-06-28 2004-03-23 Rockwell Collins, Inc. Method and apparatus for managing communication resources using frame fitting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1294798A (zh) * 1999-03-01 2001-05-09 松下电器产业株式会社 可变长帧发送装置及可变长帧发送方法
CN1316139A (zh) * 1999-05-24 2001-10-03 三星电子株式会社 移动通信系统中根据无线链路协议交换可变长度数据的装置和方法
US6711177B1 (en) * 1999-06-28 2004-03-23 Rockwell Collins, Inc. Method and apparatus for managing communication resources using frame fitting

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CN1960270A (zh) 2007-05-09
CN100561931C (zh) 2009-11-18

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