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CN101552800A - Method, device and system for providing media content - Google Patents

Method, device and system for providing media content Download PDF

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Publication number
CN101552800A
CN101552800A CN 200810090969 CN200810090969A CN101552800A CN 101552800 A CN101552800 A CN 101552800A CN 200810090969 CN200810090969 CN 200810090969 CN 200810090969 A CN200810090969 A CN 200810090969A CN 101552800 A CN101552800 A CN 101552800A
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Prior art keywords
media
content
providing
device
system
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Application number
CN 200810090969
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Chinese (zh)
Inventor
何靖桐
吴向阳
新 方
李洪武
立 温
黄世碧
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17318Direct or substantially direct transmission and handling of requests
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRICAL DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/30Information retrieval; Database structures therefor ; File system structures therefor
    • G06F17/30017Multimedia data retrieval; Retrieval of more than one type of audiovisual media
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/218Source of audio or video content, e.g. local disk arrays
    • H04N21/2181Source of audio or video content, e.g. local disk arrays comprising remotely distributed storage units, e.g. when movies are replicated over a plurality of video servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/222Secondary servers, e.g. proxy server, cable television Head-end
    • H04N21/2225Local VOD servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/472End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/478Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4788Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/60Selective content distribution, e.g. interactive television, VOD [Video On Demand] using Network structure or processes specifically adapted for video distribution between server and client or between remote clients; Control signaling specific to video distribution between clients, server and network components, e.g. to video encoder or decoder; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/632Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/60Selective content distribution, e.g. interactive television, VOD [Video On Demand] using Network structure or processes specifically adapted for video distribution between server and client or between remote clients; Control signaling specific to video distribution between clients, server and network components, e.g. to video encoder or decoder; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
    • H04N21/65Transmission of management data between client and server
    • H04N21/658Transmission by the client directed to the server
    • H04N21/6581Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Abstract

The invention discloses a method, a device and a system for providing media content, which belong to the technical field of multimedia. The method comprises the following steps: receiving media content request from a media terminal; obtaining position information of requested media content slicing files in a plurality of media storage entities according to the media content request; reading the media content slicing files according to the position information and providing the media content slicing files for the media terminal. The device comprises a receiving module, an acquiring module and a providing module. The system comprises a plurality of media storage entities, a media content distribution device and a media content providing device. The invention provides the service quality of the media content, without switching media providing entities, avoids the switching time delay, improves the user service experience, is simpler and can be implemented.

Description

提供媒体内容的方法、装置和系统 Providing media content method, apparatus and system for

技术领域 FIELD

本发明涉及多媒体技术领域,特别涉及一种提供媒体内容的方法、装置和系统。 The present invention relates to the field of multimedia technology, particularly to a method for providing media content, devices and systems. 背景技术 Background technique

IPTV (IPTelevision, IP电视)业务或流媒体业务是目前迅速发展的一种新业务,该业务利用流式传输技术,在IP包交换网络上传输多媒体文件,包括视频、音频等文件内容,这些内容在访问时无需完全下载即可立即播放。 IPTV (IPTelevision, IP television) service or streaming media service is a new service rapidly, the service using streaming technologies, IP packet-switched transmission network multimedia files, including video, audio, file content, which when access without having to completely download and play away. 流式传输技术与文件下载业务不同,它把连续的视频和音频信息经过处理后存储在服务器上,用户无需等到整个文件下载到用户终端后再观看,而是可以一边下载一边观看、收听。 Different streaming technologies and file download services, it is the continuous video and audio information after processing on the server, users do not need to wait until the entire file is stored and then downloaded to the user terminal to watch, but you can watch while downloading, listening.

应用级协议RTSP (Real-Time Streaming Protocol,实时流协议)用来控制实时数据的发送。 Application level protocol RTSP (Real-Time Streaming Protocol, Real Time Streaming Protocol) to control the real-time data transmission. 它提供一种可扩展框架,使能实时数据(如音频与视频)的受控传送、点播传送。 It provides an extensible framework to enable real-time data (e.g., audio and video) the controlled transmission, on-demand delivery. 数据源包括现场数据(如直播)与剪辑。 Data sources include field data (e.g., broadcast) the clip. 该协议目的在于控制多个数据传送会话,提供选择传送通道的方法,以及提供基于RTP (Real-time Transport Protocol,实时传输协议)选择传输机制的方法。 This protocol aims to control multiple data transmission sessions, to provide a method selected transport channel, and provides a method of selecting a transmission mechanism based on RTP (Real-time Transport Protocol, Real Time Transport Protocol). 其中,传送通道包括UDP (User Datagram Protocol,用户数据报协议)、组播UDP 与TCP (Transmission Control Protocol,传输控制协议)等等。 Wherein the conveying path includes a UDP (User Datagram Protocol, User Datagram Protocol), multicast UDP and TCP (Transmission Control Protocol, Transmission Control Protocol) and the like.

应用层的控制协议SIP (Session Initiation Protocol,会话初始化协议)可以用来建立、修改和终止多媒体会话(或者会议),如Internet电话;SIP协议也支持邀请参与者参加已经存在的会话,如多方会议。 The application layer control protocol SIP (Session Initiation Protocol, Session Initiation Protocol) can be used to establish, modify and terminate multimedia sessions (conferences) such as Internet telephony; SIP protocol support also invite participants to already existing sessions, such as multi-party conference .

随着IPTV业务或流媒体业务的进一步普及,高比特率多媒体流式传输尤其是高比特率音视频流式传输,已从处理数千并发用户发展到百万级用户的阶段。 With the further popularization of IPTV services or streaming services, high bit-rate multimedia streaming especially high bit rate audio and video streaming, handle thousands of concurrent users from the development stage to one million users. 传统的集中式媒体服务器已发展成为集群式服务器,即由多个集成了存储能力的媒体单元组成集群式服务器,每个媒体单元上被放置一些节目内容文件。 Traditional media server has become centralized server cluster, i.e., a plurality of integrated storage capacity of the media units clustered servers, some of the program content file is placed on each media unit. 集群内所有媒体单元的存储空间可被视为统一的全局空间,集群控制单元根据一定的均衡策略进行媒体内容存储和播放调度,初步实现了集群内存储资源共享与协同。 All cluster storage media units may be regarded as a unified global space, the cluster control unit for media content storage and playback schedule according to certain equilibrium strategy, the initial realization within the clustered storage resource sharing and collaboration.

由于在实际部署中,单个媒体单元的播放处理和存储访问能力是相对有限的,为了避免出现整个集群内部资源不能得到充分利用的局面,现有技术通过将多个集成了存储和播放功能的ME (MediaEngine,媒体引擎)集群来实现一个MS (Media Station,媒体站),媒体内容被分片后存储在一个媒体站内的多个ME上,也可以存储在多个媒体站上,以保证集群内部各ME的存储访问和播放处理的负载均衡,提高系统的可靠性和稳定性。 Since the actual deployment, the playback processing and storage capacity of a single media access unit is relatively limited, in order to avoid the occurrence of internal resources throughout the cluster can not be fully utilized situation, the prior art integrated by a plurality of storage and playback of ME (MediaEngine, media engine) a cluster to achieve MS (media station, media station), media content is stored fragmented over multiple ME station within a medium, it may be stored in the plurality of media stations within the cluster to ensure ME each storage access and load balancing playing process, improve the reliability and stability of the system. 该系统在向用户提供媒体内容服务时,由多个ME协同完成,通过保存有所有节目的位置的媒体引向器来定位当前分片文件所在的ME,使媒体控制台从定位出的ME接收数据,并通过ME与媒体引向器的交互,以及ME之间的交互,使得当前分片文件传输完成后,由该分片文件所在的ME 通知下一个ME,继续传输下一个分片文件,直到用户所请求的分片文件全部传输完毕。 The system providing media content service to a user, performed by the plurality of cooperative ME, ME locating where the current segment file by saving the location of all of the media program director, so that the positioning of the media console from the receiving ME data, and is directed by the ME media interaction, and the interaction between the ME, such that after the current segment file transfer is completed, the ME is located notified by the ME a segment file, continues to transmit a next segment file, segment file until the user has completed all of the requested transmission. 在对现有技术进行分析后,发明人发现: After the analysis of the prior art, the inventors found that:

在向媒体终端提供媒体内容的服务过程中,提供媒体内容分片文件和播放处理的ME不是固定的,而是根据分片文件所在位置和ME负载状况而不断切换的。 In the service process providing media content to the media terminal, ME providing media content segment file and playing process it is not fixed, but according to the location and segment file ME load conditions continuously switched. 切换过程复杂,对ME 要求较高,且需要ME之间较多交互。 Switching process complex, ME demanding and requires more interaction between ME. 切换前后ME的IP地址发生变化,可能需要双方重新进行媒体协商建立承载,从而引入切换时延,造成客户端频繁缓冲,降低客户端播放质量, 影响了用户业务感受。 ME before and after switching the IP address changes, you may need both sides to re-establish a bearer media negotiation, introducing the handover delay, resulting in frequent client buffer, reducing client playback quality, affecting the business user experience. 而且,由于切换前后不同ME所发送的RTP包的序列号、时间戳和同步源标识符等包头信息可能不同,因此,很难对用户端保持单一流连续性。 Further, since the sequence numbers of RTP packets transmitted ME different before and after switching, synchronization source identifier and time stamp and other header information may be different, it is difficult to maintain continuity of the single stream clients. 在ME之间进行切换时,当前服务的ME在当前分片文件传输结束时指示存储下一分片文件的ME开始提供服务,如果存储下一分片文件的ME位于另外的媒体站中,则该指示消息不在集群内部总线上传输,而是经过外部以太网传输,网络延迟抖动较大,带来切换时延,降低用户业务感受。 When switching between ME, ME service indication of the current memory of the next segment file at the end of the current segment file transfer begins providing service ME, ME if the next segment file storage located in another media station, the the indication message is not transmitted on the bus within a cluster, but through an external Ethernet transport network delay jitter is large, bringing the switching delay, reduce user service experience. ME是播放功能和存储功能的合设体,两者的紧耦合关系决定了架构灵活性不足,对系统扩容带来局限,不利于保护运营商的投资。 ME is playback and storage capabilities of the co-located body, tightly coupled relationship between the two determines the lack of architectural flexibility, bring the limitations of the system expansion is not conducive to protecting the operator's investment.

发明内容 SUMMARY

为了提高向媒体终端提供媒体内容的服务质量,本发明实施例提供了一种提供媒体内容 In order to improve the quality of service to provide media content to the media terminal, embodiments of the present invention provides a method of providing media content

的方法、装置和系统。 The method, apparatus and system. 所述技术方案如下: The technical solutions are as follows:

一方面,本发明实施例提供了一种提供媒体内容的方法,所述方法包括: 接收来自媒体终端的媒体内容请求; In one aspect, embodiments of the present invention provides a method of providing media content, the method comprising: receiving media content from a media request from the terminal;

根据所述媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置 According to the media content request to obtain the requested media content segment file location in a plurality of media storage entities

<曰息•, <Said interest rates •,

根据所述位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 According to the location information, reading the media content segment files, and provided to the media terminal. 另一方面,本发明实施例还提供了一种提供媒体内容的装置,所述装置包括: On the other hand, embodiments of the present invention further provides an apparatus for providing media content, the apparatus comprising:

接收模块,用于接收来自媒体终端的媒体内容请求;获取模块,用于根据所述接收模块收到的媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息; Receiving means for receiving a request for media content from a media terminal; obtaining module, configured to receive a request receiving module according to the media content, obtaining the requested media content file location information pieces in a plurality of media storage entities ;

提供模块,用于根据所述获取模块得到的位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 Providing module for module according to the acquired position information obtained by reading the media content segment files, and provided to the media terminal.

另一方面,本发明实施例还提供了一种提供媒体内容的系统,所述系统包括: 多个媒体存储实体,用于存储媒体内容; On the other hand, embodiments of the present invention also provides a system for providing media content, the system comprising: a plurality of media storage entity, for storing media content;

媒体内容分发装置,用于将所述媒体内容分别存储在所述多个媒体存储实体中; 媒体内容提供装置,用于接收来自媒体终端的媒体内容请求,根据所述媒体内容请求, 获取所请求的媒体内容分片文件在所述多个媒体存储实体中的位置信息,根据所述位置信息, 读取所述媒体内容分片文件,并提供给所述媒体终端。 Media content delivery means for each of the media content stored in said plurality of storage media entities; media content providing means for receiving a request for media content from a media terminal, the request according to the media content, obtaining the requested media content file location information pieces stored in said plurality of media entities, according to the location information, reading the media content segment files, and provided to the media terminal.

本发明实施例通过固定的媒体提供实体提供媒体内容,由该媒体提供实体从多个媒体存储实体中读取相应的媒体内容分片文件,提高了提供媒体内容的服务质量。 Embodiments of the invention provide a fixed entity providing media content to the media, the media provided by the plurality of entity read from storage media entities corresponding media segment file content, improve the quality of the service providing media content. 与现有技术相比, 在媒体内容的服务过程中不需要媒体提供实体的切换,不会引入额外的切换时延,提高了用户业务感受,避免了媒体提供实体间的交互,以及切换带来的虚拟IP地址、端口和保持单一流连续性的问题,更简单且具有可实施性。 Compared with the prior art, no media in the service process media content provided in the switching entity, does not introduce additional handover delay, improve the business user experience, interaction between the entities to avoid the media provided, and switching to bring the virtual IP address, port, and to maintain the continuity of a single class of problem, but a simple and enforceable.

附图说明 BRIEF DESCRIPTION

图1是本发明实施例提供的媒体终端、媒体提供实体与媒体存储实体组网示意图; 图2是本发明实施例提供的提供媒体内容的方法流程图; FIG 1 is a media terminal according to an embodiment of the present invention, the media and media storage entity providing entity networking diagram; FIG. 2 is a method of providing media content according to an embodiment of the present invention, a flow chart;

图3是本发明实施例提供的在多个媒体存储实体中对称存储媒体内容示意图; FIG 3 is symmetrical media content stored in the storage entity in a schematic view of a plurality of media according to an embodiment of the present invention;

图4是本发明实施例提供的提供文件下载类业务的媒体内容时并行读取分片文件示意 FIG 4 is a fragmented file is read in parallel embodiment providing a file download service class of the embodiments of the present invention provides a schematic of the media content

图; Figure;

图5是本发明实施例提供的提供视频点播类业务的媒体内容时串行读取分片文件示意 FIG 5 is a schematic serial read segment file when the media content based video on demand service embodiment embodiment of the present invention provides

图; Figure;

图6是本发明实施例提供的用户产生VCR操作时提供媒体内容流程图; 图7是本发明实施例提供的提供媒体内容的装置结构图; 图8是本发明实施例提供的提供媒体内容的系统结构图。 6 is a flowchart providing media content is generated VCR operation of the user according to an embodiment of the present invention; FIG. 7 is a configuration diagram of an apparatus for providing media content according to an embodiment of the present invention; FIG. 8 is an embodiment of the present invention provides a media content provided by the system configuration FIG.

具体实施方式 detailed description

下面结合附图对本发明实施方式作进一步地详细描述。 Drawings, embodiments of the present invention will be described in further detail below in conjunction. 本发明实施例提供了一种提供媒体内容的方法,具体包括:接收来自媒体终端的媒体内容请求;根据所述媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息;根据所述位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 Example embodiments provide a method of providing media content according to the present invention comprises: receiving media content from a media terminal request; according to the media content request to obtain the requested media content segment file in a plurality of media storage entities position information; according to the location information, reading the media content segment files, and provided to the media terminal.

本发明实施例中,在向媒体终端提供媒体内容的过程中,媒体提供实体固定不变,媒体提供实体与媒体存储实体是各自独立的装置,均位于网络侧,媒体提供实体用于向用户侧的媒体终端提供媒体内容,媒体存储实体用于存储媒体内容分片文件。 Embodiments of the present invention, in the process of providing media content to the media terminal, the fixed entity provides the media, the media and the media providing entity is an entity separate storage means are located at the network side, for media provision entity to a user side the media terminal providing media content, media storage entity for storing media content segment file. 另外,本发明实施例中媒体存储实体与媒体提供实体分别可以有多个,且媒体提供实体与媒体存储实体之间通过内部高速以太网或内部交换总线相连;媒体存储实体还可以以SAN (Storage Area Network,存储区域网络)方式实现,此时,多个媒体提供实体通过光通道交换机访问一个共享的虚拟存储空间(如多个磁阵)以获得媒体内容分片文件。 Further, this embodiment provides the media storage media entities each entity embodiment of the present invention may have a plurality, and the media provided between the entity and the media storage entity by an internal high-speed Ethernet, or internal bus is connected; media storage entity may also be in a SAN (Storage Area network, storage Area network) manner, case, a plurality of media through the optical path switch providing entity access a shared virtual memory space (e.g. a plurality of magnetic arrays) to obtain media content segment file.

参见图1,媒体提供实体与媒体终端之间的接口是业务提供接口,该接口功能主要是用于媒体提供实体接收来自媒体终端的业务请求和完成向媒体终端传送媒体内容;媒体提供实体与媒体存储实体之间的接口是存储访问接口,该接口功能主要用于提供媒体内容服务时媒体提供实体向媒体存储实体进行所需数据的读取访问等。 Referring to Figure 1, provides an interface between the media and the media terminal entity is a service provider interface, which is primarily used to provide a media entity receives a service request from the media terminal and the completion of transferring media content to a media terminal; providing entity media and media the interface between the storage entity is a memory access interface, which is mainly used for the media function entity that provides media content service providing read access to the desired data storage media like the entity.

本发明实施例中的媒体内容包括但不限于:视频点播类业务的流媒体内容、文件下载类业务的文件数据内容等等。 The embodiments of the present invention include, but are not limited to media content: video on demand streaming media content service class, the class file data content file download service, and the like. 本发明实施例中的媒体终端可以是基于固定接入方式的用户侧终端设备,也可以是基于无线接入方式的用户移动终端。 Media Terminal embodiment of the present invention may be based on the user-side equipment of fixed access terminal may be a mobile user terminal based on radio access.

参见图2,本发明实施例提供了一种提供媒体内容的方法,具体包括: Referring to Figure 2, embodiments of the present invention provides a method of providing media content comprises:

201:将媒体内容分片文件存储在多个媒体存储实体中。 201: The media content files stored in a plurality of sheet media storage entity.

为了使访问热度尽量均匀分摊在各个媒体存储实体上,在本实施例中,对媒体内容分片文件进行复制,并采用对称策略进行存储,具体过程如下:将媒体内容分片文件与为其复制的副本组成对称因子,媒体内容分片文件与其副本具有完全相同的访问特性,设有N个媒体存储实体,将媒体内容分片文件m[i, j]存储到位置为M[(imodN+j)modN]的媒体存储实体中,将媒体内容分片文件的副本存储到位置为M[(i modN + (N—l)-j) modN]的媒体存储实体中,从而使各个媒体存储实体实现相对理想的访问热度均衡;其中,N为多个媒体存储实体的个数,i表示第i个媒体内容,j表示第j个分片文件,m[i, j]表示第i个媒体内容的第j 个分片文件,M[k]表示第k个媒体存储实体,N、 i、 j和k均为大于零的正整数。 In order to share access to heat as uniformly as possible in the various media storage entity, in the present embodiment, the media content copied segment files, and symmetrical strategy stored procedure is as follows: The media content file and its copy sheet copies composition asymmetry factor, media content file and its copies have identical access characteristics, physical storage media with N, segment file of media content m [i, j] is stored in the position m [(imodN + j ) modN] media storage entity, a copy sheet media content file stored in the position M [(i modN + (N-l) -j) modN] media storage entity, so that each media storage entity is implemented relatively good access to the heat equalization; wherein, N is the number of the plurality of media storage entity, i denotes an i-th media content, j denotes the j-th segment file, m [i, j] denotes the i-th media content the j-th segment files, M [k] denotes the k-th physical storage media, N, i, j and k are positive integers greater than zero. 参见图3, 在存储实体0至5上分别存储节目0、节目l和节目2的分片文件及副本,各个节目均和自己的副本对称放置,如节目0的分片文件[0,0]、 [O,l]、 [0,2]、 [0,3]、 [0,4]和[0,5],与节目0的副本分片文件[0,5]'、 [0,4],、 [0,3],、 [0,2],、 [0,1],和[0,0],分别对称存储在存储实体0至5上。 Referring to Figure 3, in the storage entity 0-5 0 respectively store the program, the program and program segment l documents and copies of each program are placed symmetrically and 2 copies of their own, such as a program segment file is 0. [0,0] , [O, l], [0,2], [0,3], [0,4] and [0,5], and 0 copies of the program segment file [0,5] ', [0,4 ],, [0,3],, [0,2],, [0,1] and [0,0], are symmetrically stored on the storage entity 0-5. 202:媒体提供实体接收来自媒体终端的媒体内容请求。 202: an entity that provides media content from a media terminal receives media request.

具体地,媒体终端可以使用SIP、 RTSP或HTTP (Hypertext Transfer Protocol,超文本传输协议)等协议发起媒体内容请求,如文件下载类业务请求或视频点播类业务请求等等。 Specifically, the media terminal may use SIP, RTSP or HTTP (Hypertext Transfer Protocol, Hypertext Transfer Protocol) protocol to initiate the requested media content, such as file download type service request or service request based video on demand and so on. 该媒体内容请求中通常携带媒体终端所请求的媒体内容的标识,还可以携带媒体终端类型和/或媒体终端所支持的编解码信息等。 Typically the media content request carries a media identifier of the media content requested by the terminal, may also carry the media codec information terminal type and / or media supported by the terminal and the like. 如使用SIP invite消息,其中携带媒体内容标识cid,并在SDP (Session Description Protocol,会话描述协议)字段中携带媒体终端类型、媒体终端所支持的编解码信息等信息。 As used SIP invite message, which carries media content identifier CID, and codec information carrying media terminal type information, the media supported by the terminal in the SDP (Session Description Protocol, SDP) field.

另外,媒体终端可以向负载均衡实体发出媒体内容请求,负载均衡实体将其转发给选中的媒体提供实体,该媒体提供实体通过负载均衡实体接收该媒体内容请求。 Further, the media terminal may issue the requested media content, load balancing entity forwards the media to the selected load balancing provision entity to entity, the media providing entity receives the media content request through the load balancing entity. 其中,负载均衡实体是指维护集群中各媒体提供实体的负载信息,并根据负载信息为来自媒体终端的媒体内 Wherein the load balancing entity refers to maintain the cluster load information provided in the media entity, and the media from the media to the terminal according to the load information

容请求选择一个合适的媒体提供实体进行服务的实体;该负载信息包括但不限于:各媒体提 Receiving a request to select the appropriate media service entity providing entity; the load information include but are not limited to: the media mentioned

供实体的当前处理性能占用率、当前处理性能剩余值等等,负载均衡实体根据负载信息选择出用来完成此次媒体内容服务的媒体提供实体,从而达到各媒体提供实体负载均衡的目的。 Processing performance for the current usage of the entity, and so the current value of the remaining processing performance, load balancing entity selected media to accomplish the media content service provision entity according to load information, so as to achieve the media entity that provides load balancing.

203:媒体提供实体根据媒体内容请求,获取媒体终端所请求的媒体内容分片文件在上述 203: providing the media request entity according to the media content, the media content file obtaining media fragments requested by the terminal in the above

多个媒体存储实体中的位置信息。 A plurality of position information in the media storage entity.

其中,该位置信息通常为媒体内容分片文件的索引,获取位置信息的方式包括但不限于以下三种- Wherein the location information is usually divided into the index file for the media content, acquiring location information including but not limited to the following three -

1) 媒体提供实体向集中式管理媒体内容分片文件索引信息的实体査询,获取媒体终端所 1) providing entity media query to a centralized entity managing media content segment file index information, acquiring the media terminal

请求的媒体内容分片文件的索引; Requested media content in the index file;

2) 媒体提供实体在本地预先配置的媒体内容分片文件索引信息中,获取媒体终端所请求的媒体内容分片文件的索引,本地配置的索引信息通常由完成分片文件放置的媒体内容分发实体下发到本地; 2) medium providing entity media content segment file index information of the local pre-configured, the index to be retrieved media content segment file of the media requested by the terminal, the index information locally configured generally distribution entity by the complete segment file placed media content issued to the local;

3) 媒体提供实体在通过采用分布式哈希表的方式(DHT)与其它媒体提供实体共享的媒体内容分片文件索引信息中,获取媒体终端所请求的媒体内容分片文件的索引。 3) providing entity providing entity media shared with other media by way of using distributed hash table (DHT) media content segment index information file, obtaining an index of the media content of the media segment file requested by the terminal.

204:媒体提供实体根据位置信息,读取媒体终端所请求的媒体内容分片文件,并将其提供给媒体终端。 204: an entity that provides the position information of the media, the media reading the media content requested by the terminal segment file and provides it to the media terminal.

当媒体终端所请求的媒体内容分片文件存储在上述多个媒体存储实体中的至少两个媒体存储实体上时,可以釆用同时读取媒体内容分片文件的方式(即并行读取),则媒体提供实体读取媒体内容分片文件,并提供给媒体终端,具体包括: When the physical storage media at least two media media content requested by the terminal segment files stored in the plurality of media storage entities can be simultaneously read preclude the use of the media content segment file mode (i.e., read in parallel), the entity that provides media content segment file readable medium, and provided to the media terminal, comprises:

分别向媒体终端所请求的媒体内容分片文件所在的至少两个媒体存储实体,读取相应的媒体内容分片文件;在媒体终端所请求的媒体内容分片文件中的第一个分片文件读取完成后,开始提供已读取的分片文件给媒体终端,后续媒体内容分片文件的读取在当前服务提供时同时进行,直到媒体终端所请求的媒体内容分片文件全部提供给媒体终端。 At least two media storages are located media content to the media segment file requested by the terminal, reads the corresponding media content segment file; first segment file in the file of media sheet media content requested by the terminal in after reading is completed, a segment file has been read to provide to the media terminal, to read the subsequent media content segment file simultaneously when the current service provision, the media until the media content requested by the terminal segment file to the media of all terminal.

例如,参见图4,媒体终端通过SIPhwite消息请求媒体提供实体2提供文件下载类业务的媒体内容,媒体提供实体2获取媒体内容分片文件索引信息后,同时向媒体存储实体l至n读取分片文件,在取得所请求内容的第一个分片文件后开始提供给媒体终端,发送分片文件1的IP包给媒体终端,后续分片文件2、 3、 4文件的读取在当前提供分片文件1的IP包的同时继续进行。 For example, referring to FIG. 4, the media message requesting the terminal by a media entity that provides SIPhwite 2 type service providing a file download media content, a media entity that provides media content 2 after obtaining the index information file sheet, and to media storage entity l to n read points sheet document, after the first obtaining a fragment of the requested content file to the media terminal begins transmitting IP 1 segment file of the media packet to the terminal, the subsequent segment file 2, 3, 4 reads the file provided in the present IP packet segment file is continued while 1. 向媒体终端提供分片文件1完毕后直接继续后续分片文件2、 3、 4的提供,直到所有请求的媒体内容提供完毕。 Providing the media segment file to the terminal 1 after the completion of the file continues directly subsequent segment 2, 3, 4 are provided, until all of the requested media content to provide complete.

另外,当媒体终端所请求的媒体内容分片文件存储在上述多个媒体存储实体中的至少两个媒体存储实体上时,也可以采用按顺序先后读取媒体内容分片文件的方式(即串行读取),则媒体提供实体读取媒体内容分片文件,并提供给媒体终端,具体包括: Further, when at least two physical storage media sheet media content file storing the media requested by the terminal in said plurality of media storage entities, may be used successively in order to read the media content segment file mode (i.e., a string row read), the entity that provides media content segment file readable medium, and provided to the media terminal, comprises:

按媒体内容分片文件的顺序以及开始提供当前分片文件时读取下一个分片文件的原则,读取媒体终端所请求的媒体内容分片文件;在媒体终端所请求的媒体内容分片文件中的第一个分片文件读取完成后,开始提供己读取的分片文件给媒体终端,直到媒体终端所请求的媒体内容分片文件全部提供给媒体终端。 Under the principle of a read segment file press sheet media content file and the start sequence provides the current segment file, reads the media content of the requested media terminal segment files; media segment file in the media content requested by the terminal after the first completed segment file read, has started to provide the read segment file to the media terminal, the media until the media content requested by the terminal segment file to the media terminal all.

例如,参见图5,媒体终端通过SIP invite消息请求媒体提供实体2提供视频点播类业务的流媒体内容,媒体提供实体2获取媒体内容分片文件索引信息后,按顺序以及开始提供当前分片文件时读取下一个分片文件的原则,向媒体存储实体l至n读取分片文件,先从媒体存储实体1读取媒体终端所请求的分片文件1,在取得第一个分片文件后开始提供给媒体终端,发送分片文件1的RTP包给媒体终端,并在开始提供分片文件1后,开始从媒体存储实体2读取分片文件2;分片文件l提供完毕后,继续提供分片文件2,并在开始提供分片文件2后,从媒体存储实体n读取分片文件3;以此类推,直到所有请求的媒体内容提供完毕。 For example, referring to Figure 5, media terminal through the SIP invite message requesting media providing entity 2 video on demand type service streaming media content, the media providing entity 2 after obtaining the media content segment file index information, order and started to provide a current segment file under the principle of a read segment file, the media storage entity l to n read segment files, starting with the media segment file readable medium stores 1 entity requested by the terminal 1, to obtain a first segment file provided to the media after the start of a terminal, it transmits the sub-packet to RTP sheet document media terminal 1, and starts to provide slice file 1 starts from the media storage entity 2 read segment files 2; segment file l after completion of the offer, after 2 to continue to provide segment files, and the file 2 starts to provide slice, read from the media segment file storage entity n 3; and so on until all of the requested media content to provide complete.

本发明实施例的媒体提供实体在提供媒体内容的过程中,如果用户产生VCR操作,则媒体提供实体会释放原有的会话,根据用户的操作重新建立一个会话,并继续提供媒体内容。 Media embodiments of the present invention provides a process entity providing media content, if the user generates VCR operation, the media providing entity releases the original session, re-establish a session according to a user's operation, and continues to provide media content. 参见图6,媒体提供实体2在向媒体终端提供流媒体内容时,用户拖动时间刻度条,媒体终端播放器通过用户指定的新位置在整个时间刻度条中的比例,计算出该位置对应于整个媒体文件播放时间段的时间点。 Referring to Figure 6, when the media 2 in the provision entity providing the streaming media content to the media terminal, the user drags the time scale bar, the media player via the user terminal the new position specified proportion of the total time scale strips, calculating the position corresponding to the entire media file playback point of the time period. 媒体终端向媒体提供实体2发送基于RTSP协议的PAUSE命令指示暂停媒体流传输,正在传输的媒体流立刻停止,RTSP会话被释放。 Media terminal providing entity transmits a command based on the RTSP PAUSE 2 indicates suspension of transmission of the media stream, the media stream being transmitted immediately stop, RTSP session is released to the media. 媒体终端向媒体提供实体2发送基于RTSP协议的PLAY命令,其中携带NPT参数以指定媒体流播放开始时间。 Media terminal providing entity based on the RTSP PLAY command sent to the media 2, which carries media stream NPT parameters to specify the playback start time. 媒体提供实体2根据RTSP消息中的NPT参数定位目标分片文件,读取目标分片文件n,在取得分片文件n后开始进行流化处理并提供给媒体终端。 2 providing entity media segment file according to the RTSP message parameters NPT targets, to read the target segment file n, starts streaming process, after obtaining n segment file and provided to the media terminal. 媒体提供实体2对分片文件n+l的读取启动时间是在分片文件n开始向媒体终端提供后,由媒体提供实体2向相应媒体存储实体读取。 Providing two pairs of entities media segment file n + l of the read start time is after the start slice n files available to the media terminal, providing entity 2 read by the media to the respective storage media entity. 媒体提供实体2在分片文件n向媒体终端提供完毕后直接继续分片文件n+l的提供,以此类推,直至用户视频点播的流媒体内容提供完毕时结束。 Providing entity media segment file 2 after completion of n provides the terminal proceeds directly to the media segment file provided n + l, and so on, until completion of the end user provides the VOD streaming media content.

本发明实施例提供的提供媒体内容的方法,通过固定的媒体提供实体提供媒体内容,由该媒体提供实体从多个媒体存储实体中读取相应的媒体内容分片文件,提高了提供媒体内容的服务质量。 The method of providing media content according to an embodiment of the present invention, there is provided a fixed entity that provides media content to the media, the media provided by the entity reads the corresponding media content file from the plurality of sheet media storage entities, providing media content to improve the service quality. 与现有技术相比,在媒体内容的服务过程中不需要媒体提供实体的切换,不会引入额外的切换时延,提高了用户业务感受,避免了媒体提供实体间的交互,以及切换带来的虚拟IP地址、端口和保持单一流连续性的问题,更简单且具有可实施性。 Compared with the prior art, no media in the service process media content provided in the switching entity, does not introduce additional handover delay, improve the business user experience, interaction between the entities to avoid the media provided, and switching to bring the virtual IP address, port, and to maintain the continuity of a single class of problem, but a simple and enforceable. 采用支持容错的分片文件对称放置方法,兼顾了用户访问特性,利用数据复制来构造对称因子,具有较强的实施性,有效地实现了各个媒体存储实体的存储访问均衡,避免出现个别磁盘I/O访问瓶颈的问题,有利于延长磁盘的使用寿命、提高系统的可靠性和稳定性。 Using support fault-tolerant segment file placed symmetrically method, taking into account the characteristics of the user to access, using data copied to construct symmetric factor, embodiments of a strong, effective implementation of the various media stored in storage access entity balanced, to avoid individual disk I / O bottleneck problem of access, help extend the life of the disk to improve the reliability and stability of the system. 另外,媒体提供实体和媒体存储实体分离,架构灵活,利于系统扩容或支持其它存储实现,有利于保护系统投资。 In addition, the media and provide physical storage media entities separation, flexible architecture facilitates system expansion or other storage implementation support, help protect system investments.

参见图7,本发明实施例还提供了一种提供媒体内容的装置,具体包括: Referring to Figure 7, an embodiment of the present invention further provides an apparatus for providing media content comprises:

接收模块,用于接收来自媒体终端的媒体内容请求; Receiving means for receiving media content from a media terminal request;

获取模块,用于根据接收模块收到的媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息; Acquiring module, for acquiring media content segment file the requested location information of the plurality of media storage entities based on the media content received by the request receiving module;

提供模块,用于根据获取模块得到的位置信息,读取媒体内容分片文件,并提供给媒体终端。 Providing module, a module according to the acquired position information obtained by reading the media content segment file and provided to the media terminal.

其中,获取模块具体包括: Wherein the obtaining module comprises:

第一获取单元,用于向管理媒体内容分片文件索引信息的实体査询,获取所请求的媒体内容分片文件的索引; A first obtaining unit configured to segment file index information to manage media content query entity, obtain the media content index segment file requested;

或者包括第二获取单元,用于在本地由媒体内容分发实体配置的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引; Or comprises a second acquisition unit for distributing media content from the media content entity configuration file fragment in the local index information, the index acquiring media content of the requested document sheet;

或者包括第三获取单元,用于在通过采用分布式哈希表的方式与其它媒体内容提供装置共享的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引。 Or a third obtaining unit includes, means for providing shared with other media content distributed hash table by way of the media content segment file index information, obtaining the requested media content segment file index.

图7所示的装置中,提供模块可以具体包括: Apparatus shown in Figure 7, the module may be provided comprises:

第一读取单元,用于当所请求的媒体内容分片文件存储在多个媒体存储实体中的至少两个媒体存储实体上时,根据获取模块得到的位置信息,分别向至少两个媒体存储实体读取相应的媒体内容分片文件; A first reading unit configured to when the media content of the requested media storage when the at least two entities segment file stored in the plurality of media storage entities, based on the acquired position information obtained by the module, to store at least two media entity reads the corresponding media content segment file;

第一提供单元,用于当第一读取单元完成所请求的媒体内容分片文件中的第一个分片文 A first providing unit configured to, when the first reading unit completes the requested media content segment file in the first packet fragment

件的读取后,开始提供己读取的分片文件给媒体终端,直到所请求的媒体内容分片文件全部提供给媒体终端。 After reading member, has started to provide the read segment file to the media terminal, until the requested media content segment file to the media terminal all.

另外,图7所示的装置中,提供模块还可以具体包括- Further, the device shown in Figure 7, the module may further comprises providing -

第二读取单元,用于当所请求的媒体内容分片文件存储在多个媒体存储实体中的至少两个媒体存储实体上时,根据获取模块得到的位置信息,按顺序以及开始提供当前分片文件时读取下一个分片文件的原则,读取所请求的媒体内容分片文件; A second reading unit for, when the media content of the requested media storage when the at least two entities segment file stored in the plurality of media storage entities, based on the position information acquisition module obtained, in order to provide the current slice and start under the principle of a read segment file when the file, reading the requested media content segment file;

第二提供单元,用于当第二读取单元完成所请求的媒体内容分片文件中的第一个分片文 A second providing unit configured to, when the second reading unit completes the requested media content segment file in the first packet fragment

件的读取后,开始提供己读取的分片文件给媒体终端,直到所请求的媒体内容分片文件全部提供给媒体终端。 After reading member, has started to provide the read segment file to the media terminal, until the requested media content segment file to the media terminal all.

本发明实施例提供的提供媒体内容的装置,通过从多个媒体存储实体中读取相应的媒体内容分片文件,并提供给媒体终端,提高了提供媒体内容的服务质量。 Means for providing media content according to an embodiment of the present invention, segment file by reading the appropriate media content from the plurality of media storage entity, and provided to the media terminal, to improve the quality of the service providing media content. 与现有技术相比,在媒体内容的服务过程中不需要媒体提供实体的切换,不会引入额外的切换时延,提高了用户业务感受,避免了媒体提供实体间的交互,以及切换带来的虛拟IP地址、端口和保持单一流连续性的问题,更简单且具有可实施性。 Compared with the prior art, no media in the service process media content provided in the switching entity, does not introduce additional handover delay, improve the business user experience, interaction between the entities to avoid the media provided, and switching to bring the virtual IP address, port, and to maintain the continuity of a single class of problem, but a simple and enforceable. 另外,媒体提供实体和媒体存储实体分离,架构灵活,利于系统扩容或支持其它存储实现,有利于保护系统投资。 In addition, the media and provide physical storage media entities separation, flexible architecture facilitates system expansion or other storage implementation support, help protect system investments.

参见图8,本发明实施例还提供了一种提供媒体内容的系统,具体包括: Referring to Figure 8, embodiments of the present invention further provides a system for providing media content comprises:

多个媒体存储实体,用于存储媒体内容; A plurality of media storage entity, for storing media content;

媒体内容分发装置,用于将媒体内容分别存储在多个媒体存储实体中;媒体内容提供装置,用于接收来自媒体终端的媒体内容请求,根据媒体内容请求,获取 Media content delivery apparatus, for a plurality of media content are stored in the media storage entity; media content providing means for receiving a request for media content from a media terminal, the request according to the media content, obtaining

所请求的媒体内容分片文件在多个媒体存储实体中的位置信息,根据位置信息,读取媒体内 Media content segment file in the requested location information of the plurality of media storage entities, based on position information, to read the media

容分片文件,并提供给该媒体终端。 Receiving segment file, and provided to the media terminal.

其中,媒体内容分发装置具体包括: Wherein the media content distribution apparatus comprises:

第一分发模块,用于将媒体内容分片文件m[i, j]存储到多个媒体存储实体中位置为S[(imod N + j) mod N]的媒体存储实体中; First distribution means for the media content segment file m [i, j] is stored in the plurality of storage media entities position S [(imod N + j) mod N] media storage entity;

第二分发模块,用于将媒体内容分片文件的副本存储到多个媒体存储实体中位置为S[(imodN + (N—1)—j)modN]的媒体存储实体中; Second distribution module, a copy of the media content segment file for storing a plurality of media storage entity location S [(imodN + (N-1) -j) modN] media storage entity;

N为多个媒体存储实体的个数,i表示第i个媒体内容,j表示第j个分片文件,N、 i和j均为大于零的正整数。 N is the number of the plurality of media storage entities, i denotes an i-th media content, j denotes the j-th segment files, N, i and j are positive integers greater than zero. 进一步地,图8所示的系统还可以包括: Further, the system shown in FIG. 8 may further comprise:

负载均衡实体,用于维护多个上述媒体内容提供装置的负载信息,当接收到媒体终端发送的媒体内容请求后,根据维护的负载信息选择其中一个媒体内容提供装置,并将收到的媒体内容请求转发给选中的媒体内容提供装置。 Load balancing entity for the plurality of media content to maintain load information apparatus, when receiving the media content transmission request to the media terminal, wherein a media content selection device according to maintain load information, and receive media content forwards the request to the selected media content providing apparatus.

本实施例中的媒体内容分发装置可以是独立的设备,也可以是集成媒体提供实体上,或者集成在媒体存储实体上。 Media content distribution apparatus in this embodiment may be an independent device, or may be provided on the integrated media entities, or integrated in the media storage entity.

本发明实施例提供的提供媒体内容的系统,通过固定的媒体提供装置提供媒体内容,由该媒体提供装置从多个媒体存储实体中读取相应的媒体内容分片文件,提高了提供媒体内容的服务质量。 The system provides media content according to an embodiment of the present invention, there is provided apparatus for providing media content through a fixed media provided by the media device reads the corresponding media content file from the plurality of sheet media storage entities, providing media content to improve the service quality. 与现有技术相比,在媒体内容的服务过程中不需要媒体提供实体的切换,不会引入额外的切换时延,提高了用户业务感受,避免了媒体提供实体间的交互,以及切换带来的虚拟IP地址、端口和保持单一流连续性的问题,更简单且具有可实施性。 Compared with the prior art, no media in the service process media content provided in the switching entity, does not introduce additional handover delay, improve the business user experience, interaction between the entities to avoid the media provided, and switching to bring the virtual IP address, port, and to maintain the continuity of a single class of problem, but a simple and enforceable. 媒体内容分发装置采用支持容错的分片文件对称放置方法,兼顾了用户访问特性,利用数据复制来构造对称因子,具有较强的实施性,有效地实现了各个媒体存储实体的存储访问均衡,避免出现个别磁盘I/0访问瓶颈的问题,有利于延长磁盘的使用寿命、提高系统的可靠性和稳定性。 Media content distribution apparatus using support fault-tolerant segment file placed symmetrically method, taking into account the characteristics of the user to access, using data copied to construct symmetric factor, embodiments of a strong, effective implementation of the various media stored in storage access entity balanced, to avoid emergence of individual disk I / 0 access bottleneck problems, help extend the life of the disk to improve the reliability and stability of the system. 另外,媒体提供装置和媒体存储实体分离,架构灵活,利于系统扩容或支持其它存储实现,有利于保护系统投资。 In addition, media storage devices and media entities to provide separation, flexible architecture facilitates system expansion or other storage implementation support, help protect system investments.

本发明实施例可以利用软件实现,相应的软件程序可以存储在可读取的存储介质中,例如,计算机的硬盘、缓存或光盘中。 Embodiments of the invention may be implemented by software, the corresponding software program may be stored in a readable storage medium, e.g., a computer hard disk, or optical disk cache.

以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 The above are only preferred embodiments of the present invention, not intended to limit the present invention, any modifications within the spirit and principle of the present invention, the, equivalent substitutions, improvements should be included in the protection of the present invention within range.

Claims (16)

  1. 1.一种提供媒体内容的方法,其特征在于,所述方法包括: 接收来自媒体终端的媒体内容请求; 根据所述媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息; 根据所述位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 CLAIMS 1. A method for providing media content, wherein the method comprises: receiving a request for media content from a media terminal; media content according to the request to obtain the requested media content fragment file is stored in a plurality of physical media the position information; according to the location information, reading the media content segment files, and provided to the media terminal.
  2. 2. 根据权利要求l所述的提供媒体内容的方法,其特征在于,所述接收来自媒体终端的媒体内容请求之前,还包括:将媒体内容分片文件m[i, j]存储到所述多个媒体存储实体中位置为M[(i modN + j) mod N]的媒体存储实体中;将所述媒体内容分片文件的副本存储到所述多个媒体存储实体中位置为M[(imodN + (N 一1)-j)modN]的媒体存储实体中;所述N为所述多个媒体存储实体的个数,所述i表示第i个媒体内容,所述j表示第j个分片文件,所述N、 i和j均为大于零的疋整数。 2. The method of providing media content according to claim l, characterized in that, before the media content from the media terminal to the received request, further comprising: a segment file of media content m [i, j] to the storage a plurality of physical storage media in media storage location of the entity is M [(i modN + j) mod N] in; to store a copy of the media content file to the fragment positions of the plurality of media storage entity M [( imodN + (N a 1) -j) modN] media storage entity; N is the number of the plurality of media storage entities, i denotes the i-th media content, j denotes the j-th segment file, said N, i and j are integers greater than zero Cloth.
  3. 3. 根据权利要求l所述的提供媒体内容的方法,其特征在于,所述接收来自媒体终端的媒体内容请求之前,还包括:所述媒体终端使用会话初始化协议、实时流协议或超文本传输协议协议发送媒体内容请求,所述媒体内容请求具体为文件下载类业务请求或视频点播类业务请求。 3. The method of providing media content according to claim l, wherein said receiving a request from the media content before the media terminal, further comprising: the media terminal uses a Session Initiation Protocol, Real Time Streaming Protocol, or hypertext transfer agreement protocol to send the requested media content, the media content as a file download request specific class VOD service request or service request type.
  4. 4. 根据权利要求3所述的提供媒体内容的方法,其特征在于,所述媒体内容请求中包含所述媒体终端所请求的媒体内容的标识,还包含所述媒体终端的类型和所述媒体终端所支持的编解码信息中的至少一种。 4. The method of providing media content according to claim 3, wherein the media content includes an identifier of the media content of the requested media requested by the terminal, the terminal further comprises a type of the media and said media codecs supported by the terminal at least one of information.
  5. 5. 根据权利要求1所述的提供媒体内容的方法,其特征在于,所述接收来自媒体终端的媒体内容请求之前,还包括:所述媒体终端发送媒体内容请求给负载均衡实体;所述负载均衡实体收到后,根据维护的多个媒体提供实体的负载信息,选择其中一个媒体提供实体,并将所述媒体内容请求转发给选中的媒体提供实体; 相应地,所述接收来自媒体终端的媒体内容请求,具体为: 所述媒体提供实体接收所述负载均衡实体发来的所述媒体内容请求。 The method of providing media content according to claim 1, characterized in that, before the media content from the media terminal to the received request, further comprising: the media terminal sends a media content request to the load balancer entity; the load after equalization entity receives, provide load information according to a plurality of media maintenance entity selects one media provider entity, and forwards the request to the media content selected media provision entity; accordingly, the terminal receives the media requested media content, specifically: the entity receives the media providing load balancing entity sent from the media content request.
  6. 6. 根据权利要求1所述的提供媒体内容的方法,其特征在于,所述获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息,具体为:向管理媒体内容分片文件索引信息的实体査询,获取所请求的媒体内容分片文件的索引; 在本地由媒体内容分发实体配置的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引;在通过采用分布式哈希表的方式与其它媒体提供实体共享的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引。 The method of providing media content according to claim 1, wherein the obtaining position information of the media content segment requested file is stored in a plurality of media entities, specifically: managing media content fragment to index information file query entity acquires the requested media content of the index file; distributed by the local media content entity configured media content segment file index information, obtain the media content index segment file requested; in providing entity shared with other media distributed hash table by way of media content segment file index information, obtaining the requested media content in the index file.
  7. 7. 根据权利要求1所述的提供媒体内容的方法,其特征在于,所述读取所述媒体内容分片文件,并提供给所述媒体终端,具体包括:当所述所请求的媒体内容分片文件存储在所述多个媒体存储实体中的至少两个媒体存储实体上时,分别向所述至少两个媒体存储实体读取相应的媒体内容分片文件;在所述所请求的媒体内容分片文件中的第一个分片文件读取完成后,开始提供已读取的分片文件给所述媒体终端,直到所述所请求的媒体内容分片文件全部提供给所述媒体终端。 7. A method of providing media content according to claim 1, wherein said sheet reading the media content file and provided to the media terminal specifically comprises: when the requested media content segment files stored in said plurality of media storage entity when at least two physical storage medium, respectively, reads the corresponding media content to the at least two media segment file storages; in the requested media after the contents of the first segment file in a complete read segment file, segment file provides the start has been read to the media terminal, until the requested media content segment file provided to the media terminal all .
  8. 8. 根据权利要求l所述的提供媒体内容的方法,其特征在于,所述根据所述位置信息, 读取所述媒体内容分片文件,并提供给所述媒体终端,具体包括-当所述所请求的媒体内容分片文件存储在所述多个媒体存储实体中的至少两个媒体存储实体上时,按顺序以及开始提供当前分片文件时读取下一个分片文件的原则,读取所述所请求的媒体内容分片文件;在所述所请求的媒体内容分片文件中的第一个分片文件读取完成后,开始提供已读取的分片文件给媒体终端,直到所述所请求的媒体内容分片文件全部提供给所述媒体终端。 8. A method for providing media content according to claim l, wherein said position information based on the reading of the media content segment files, and provided to the media terminal comprises - when the said media content of the requested file stored in the plurality of sheet media storage entity when at least two physical storage medium, according to sequence and the start time of the current segment file provided under the principle of a read segment file, read take the media content of the requested document sheet; after the first fragment of the file requested media content fragment in the file read is completed, a segment file provides the read terminal to the media, until the requested media content segment file provided to the media terminal all.
  9. 9. 根据权利要求l所述的提供媒体内容的方法,其特征在于,所述媒体终端具体为基于固定接入方式的用户侧终端设备或基于无线接入方式的用户移动终端。 9. A method for providing media content as claimed in claim l, wherein said particular media terminal based on subscriber side terminal equipment or a fixed access radio access scheme of the mobile terminal user.
  10. 10. —种提供媒体内容的装置,其特征在于,所述装置包括: 接收模块,用于接收来自媒体终端的媒体内容请求;获取模块,用于根据所述接收模块收到的媒体内容请求,获取所请求的媒体内容分片文件在多个媒体存储实体中的位置信息;提供模块,用于根据所述获取模块得到的位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 10. - kind of means for providing media content, characterized in that said apparatus comprises: a receiving module, configured to receive media content from a media request from the terminal; obtaining module, configured to receive a request receiving module according to the media content, obtain the requested media content file location information pieces stored in the plurality of media entities; providing means for acquiring location information based on the obtained module reads the media content segment files, and to provide the media terminal.
  11. 11. 根据权利要求IO所述的提供媒体内容的装置,其特征在于,所述获取模块具体包括: 第一获取单元,用于向管理媒体内容分片文件索引信息的实体査询,获取所请求的媒体内容分片文件的索引;或者包括第二获取单元,用于在本地由媒体内容分发实体配置的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引;或者包括第三获取单元,用于在通过采用分布式哈希表的方式与其它媒体内容提供装置共享的媒体内容分片文件索引信息中,获取所请求的媒体内容分片文件的索引。 11. The apparatus according to claim IO providing media content, characterized in that said acquisition module comprises: a first obtaining unit configured to segment file index information to manage media content query entity, acquiring the requested the media content of the index file; or comprises a second acquisition unit for distribution entity configured by the local media content in the media content file fragmentation index information, the index acquiring media content of the requested document sheets; includes or third obtaining unit, means for providing shared with other media content distributed hash table by way of the media content segment file index information, the index acquiring media content of the requested document sheet.
  12. 12. 根据权利要求IO所述的提供媒体内容的装置,其特征在于,所述提供模块具体包括: 第一读取单元,用于当所述所请求的媒体内容分片文件存储在所述多个媒体存储实体中的至少两个媒体存储实体上时,根据所述获取模块得到的位置信息,分别向所述至少两个媒体存储实体读取相应的媒体内容分片文件;第一提供单元,用于当所述第一读取单元完成所述所请求的媒体内容分片文件中的第一个分片文件的读取后,开始提供已读取的分片文件给所述媒体终端,直到所述所请求的媒体内容分片文件全部提供给所述媒体终端。 12. The apparatus according to claim IO providing the media content, wherein said providing module comprises: a first reading unit for, when the requested media content file stored in the multi-slice media storage entity when at least two physical storage medium, the position information obtained by the acquisition module, each read the corresponding media content to the at least two media segment file storages; a first providing unit, after a first reading unit when the completion of the requested media content fragment reads the first file in the file sheet, providing start segment file has been read to the media terminal, until the requested media content segment file provided to the media terminal all.
  13. 13. 根据权利要求IO所述的提供媒体内容的装置,其特征在于,所述提供模块具体包括: 第二读取单元,用于当所述所请求的媒体内容分片文件存储在所述多个媒体存储实体中的至少两个媒体存储实体上时,根据所述获取模块得到的位置信息,按顺序以及开始提供当前分片文件时读取下一个分片文件的原则,读取所述所请求的媒体内容分片文件;第二提供单元,用于当所述第二读取单元完成所述所请求的媒体内容分片文件中的第一个分片文件的读取后,开始提供已读取的分片文件给媒体终端,直到所述所请求的媒体内容分片文件全部提供给所述媒体终端。 13. The apparatus as claimed in claim IO providing the media content, wherein said providing module comprises: a second reading unit for, when the requested media content file stored in the multi-slice when the storage media at least two entities media storage entities, based on position information obtained by the obtaining module, under the principle of a read segment file by providing the current time and the start sequence of segment files, by reading the requested media content segment file; a second providing unit configured to, when the reading of the first fragment of the second document reading unit completes the requested media content fragment in the file, is started to provide segment file is read to the media terminal, the media content segment file until all of the requested media is provided to the terminal.
  14. 14. 一种提供媒体内容的系统,其特征在于,所述系统包括: 多个媒体存储实体,用于存储媒体内容;媒体内容分发装置,用于将所述媒体内容分别存储在所述多个媒体存储实体中; 媒体内容提供装置,用于接收来自媒体终端的媒体内容请求,根据所述媒体内容请求,获取所请求的媒体内容分片文件在所述多个媒体存储实体中的位置信息,根据所述位置信息,读取所述媒体内容分片文件,并提供给所述媒体终端。 14. A system of providing media content, characterized in that, the system comprising: a plurality of media storage entity, for storing media content; media content delivery means for each of the media content stored in the plurality of media storage entity; media content providing means for receiving media content from a media terminal request, in accordance with a request of the media content, media content acquiring location information of the requested document sheet in said plurality of storage media entities, according to the location information, reading the media content segment files, and provided to the media terminal.
  15. 15. 根据权利要求14所述的提供媒体内容的系统,其特征在于,所述媒体内容分发装置具体包括:第一分发模块,用于将媒体内容分片文件m[i, j]存储到所述多个媒体存储实体中位置为S[(i mod N + j) mod N]的媒体存储实体中;第二分发模块,用于将所述媒体内容分片文件的副本存储到所述多个媒体存储实体中位置为S[(imodN + (N—l)-j)modN]的媒体存储实体中;所述N为所述多个媒体存储实体的个数,所述i表示第i个媒体内容,所述j表示第j个分片文件,所述N、 i和j均为大于零的正整数。 15. A system of providing media content according to claim 14, wherein the media content distribution apparatus comprises: a first distribution module for a media content segment file m [i, j] stored in the storing said plurality of physical media in media storage location of the entity is S [(i mod N + j) mod N] in; second distribution means for the media content segment files to the plurality of copy storage media storage media storage location entity entity S [(imodN + (N-l) -j) modN] in; N is the number of said plurality of said storage media entities, i denotes the i-th medium content, j denotes the j-th segment files, said N, i and j are positive integers greater than zero.
  16. 16. 根据权利要求14所述的提供媒体内容的系统,其特征在于,所述系统还包括: 负载均衡实体,用于维护多个所述媒体内容提供装置的负载信息,当接收到所述媒体终端发送的媒体内容请求后,根据所述负载信息选择其中一个所述媒体内容提供装置,并将所述媒体内容请求转发给选中的所述媒体内容提供装置。 16. A system of providing media content according to claim 14, characterized in that the system further comprises: load balancing entity for maintaining said plurality of load information of media content providing device, when receiving the media after the media content transmission request to the terminal, the media content providing apparatus according to the load information selecting one of the media content providing apparatus, and forwarding the request to the media content selected.
CN 200810090969 2008-04-01 2008-04-01 Method, device and system for providing media content CN101552800A (en)

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