CN102017646B - 用于在网络上分发tv内容的方法和*** - Google Patents
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; 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
- H04N21/63—Control 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
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
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- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
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- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; 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
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; 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
- H04N21/63—Control 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
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/812—Monomedia components thereof involving advertisement data
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Abstract
为了使得大量用户能够在广告间隙期间接收到目标TV广告而不需要单播内容传输,本发明请求保护一种用于在网络上(尤其是在IP网络上)分发TV内容的方法,其中TV内容包括主要内容和广告内容,以及其中将多播地址作为连接信息发送给用户,在网络内关于所述多播地址分发主内容的TV频道。该方法包括将另外的连接信息发送至用户的步骤,另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段。此外,本发明请求保护一种用于在网络上分发TV内容的相应***,优选地用于执行上述方法。
Description
技术领域
本发明涉及一种用于在网络上分发TV内容的方法和***,尤其是在IP网络上,其中,TV内容包括主内容和广告内容,以及将多播地址作为连接信息发送给用户,在网络内关于该多播地址分发主内容的TV频道。
背景技术
TV(电视)内容在例如IP(互联网协议)网络上的分发通常涉及IP多播,以便与IP单播相比节省带宽消耗。在IPTV装置(例如,IPTV机顶盒)能够“调谐”到IP网络上的TV频道之前,首先需要获悉IP多播地址,在运营商网络中关于该IP多播地址广播或分发TV频道。
尝试在IP网络中传送目标内容的根本问题在于单播点到点业务所引起的带宽消耗。尽管对于诸如web浏览和电子邮件之类的传统互联网使用而言这是可行的,然而,它在IPTV***中引起了严重的问题。主要区别在于IPTV***对于网络具有一部分苛刻的实时需求,并且需要充足的稳定带宽用于AV(音频-视频)内容传送。为了能够向大量用户传送IPTV频道,必须使用IP多播,以将带宽消耗保持在运营商核心网的可接受界限。由于假设正在观看相同IPTV频道的所有用户看的是相同内容,因此为了广播TV频道而对IPTV内容进行的多播运行良好。然而,这并不适用于目标广告场景,其中假设正在观看相同IPTV频道的用户在同一时间看到的是不同的广告内容或广告片段。尽管在广告间歇(break)期间从IP多播切换到IP单播能够将目标广告内容或广告片段传送到各个用户,然而这也可能超过IPTV网络带宽能力。
在本发明中,广告片段是广告内容中主要以一个或多个特定用户或用户群为目标的子部分。
发明内容
本发明的目的是改进并进一步开发一种用于在网络上分发TV内容的方法和***,以使得大量用户能够接收到目标TV广告,而不需要单播内容传输。
根据本发明,上述目的是通过一种包括权利要求1中的特征在内的方法和一种包括权利要求11中的特征在内的***来实现的。根据权利要求1,该方法的特征在于向用户发送另外的连接信息的步骤,所述另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段。根据权利要求11,该***的特征在于向用户发送另外的连接信息的装置,所述另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段。
根据本发明,应该认识到,可以通过向用户发送另外的连接信息的步骤来使得大量用户都能够接收到目标TV广告。这种另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段。换言之,用户将接收使得他能够接收到广告内容中所请求的或选择的广告片段的特定连接信息。具体地,该另外的连接信息将使得大量用户能够接收到目标TV广告,而不需要单播内容传输。
这提高了广告效率,同时将网络上的带宽消耗保持在可接受的比率。
优选地,该另外的连接信息包括另外的多播地址,关于所述另外的多播地址分发所述广告片段。因此,基于多播,用户将能够从两个不同的多播组接收主内容和广告内容,两个不同的多播组中一个针对主内容,一个针对广告内容。这一方法或***是基于ASM(任意源多播)操作的。
备选地,另外的连接信息包括主内容的源地址和广告片段的源地址。在这种情况下,用户将根据多播地址,仅通过一个多播组来接收主内容和广告内容。通过主内容和广告内容的不同源地址来区分主内容和广告内容。该方法和***能够在节省网络资源的同时基于标准SSM(源特定多播)机制进行操作。
关于最佳可能效率和带宽消耗节省,将正在分发主内容和广告内容的所有流传输服务器同步,以使得在用户处在给定时间点或时间段只接收主内容或广告内容。换言之,用户在给定时间点或时间段只接收主内容或广告内容。这避免了并行分发。
在本发明的优选实施例中,给定时间点或时间段是广告间隙。因此,广告内容仅在广告间隙期间在针对主内容的TV频道上传输。
关于根据本发明的一种非常简单的方法和***,连接信息和/或另外的连接信息可以由EPG(电子节目指南)服务器提供。这类EPG服务器可以给用户或接收IPTV装置提供IPTV频道连接细节。
备选地,连接信息和/或另外的连接信息承载在会话建立信令中。在基于IMS(IP多媒体子***)的IPTV的情况下,这类会话建立信令可以由SIP(会话发起协议)信令提供。
备选地,连接信息和/或另外的连接信息可以通过预配置或手动配置来提供。这种预配置优选地可以通过连接信息和另外的连接信息的前一天下载来提供。这类下载可以包括所有连接信息和另外的连接信息。
附图说明
存在若干种方式可以有利地设计和进一步发展本发明的教导。为此,一方面参考从属于专利权利要求1和11的专利权利要求,另一方面参考下列对附图所示意的本发明优选实施例的说明。结合借助于附图对本发明优选实施例的说明,将对本发明教导的通常优选的实施例和进一步发展进行说明。在附图中:
图1示意了常规的IPTV频道广播,以及
图2示意了在广告间隙期间的IPTV频道广播。
具体实施方式
本发明的实施例使得大量用户能够在广告间隙期间在同一个广播TV频道上接收目标TV广告,而不需要IP单播AV内容传输。这通过利用IP多播,提高了广告效率,同时将运营商IP网络上的带宽消耗保持在可接受的比率。
用户的IPTV装置接收连接信息,该连接信息取决于终端用户被分配给的广告片段。本发明的重要特征在于,连接信息可以包括一组IP多播组和源地址,IPTV装置将预期从这一组IP多播组和源地址接收包含TV内容的IP业务。在源特定多播(SSM)中,IPTV装置接收针对期望IPTV频道的多播组IP地址、针对主内容流传输服务器的源IP地址和针对片段广告流传输服务器的源IP地址。在广告间隙期间,主内容流传输服务器和片段广告流传输服务器以同步方式轮流,以使得在IPTV装置处在给定时间点只接收一个IPTV AV流。IGMPv3和MLDv2是两个支持SSM的多播协议。
在优选实施例中,可以使用标准SSM机制,以使IPTV装置接收分段的广告,同时节省广播IPTV网络资源。使用SSM是遵从基于ETSITISPAN IMS的IPTV,或者对于基于ETSI TISPAN IMS的IPTV是透明的。网络侧(例如,针对地址的服务器)可以决定如何将用户分配给片段,即,对受黑客攻击的IPTV装置屏蔽针对该决定的商业逻辑。
个性化EPG或SIP信令(前者可以用于所有IPTV方案,而后者用于基于IMS的IPTV)可以用于承载根据TV频道的片段相关信息。
尽管具有SSM能力的核心网是有益的,然而也可以利用任意源多播(ASM)来实现所提出的概念。这是下列情形:例如,在只是IGMPv2的网络中,向IPTV装置IP分组接收机添加少量附加逻辑,并将广告多播组与IPTV频道组相关联(而不是引入广告特定源地址)。然后,客户端需要同时加入该广告组和关联的频道。
在优选实施例中,将IPTV频道的所有流传输服务器同步。换言之,广告服务器仅在广告间隙中进行流传输,而内容服务器在广告间隙期间不能进行流传输,反之亦然。
在优选实施例中,EPG服务器给接收IPTV装置提供IPTV频道连接细节。频道连接细节或连接信息可以包括广播IPTV频道的多播组IP地址,以及如果不使用SSM,则还可以包括针对与用户的片段分类和IPTV频道相对应的广告组的广告多播组IP地址。
如果使用SSM,则连接信息包括广播IPTV频道的多播组IP地址、针对广播IPTV频道的主内容服务器IP源地址以及与用户的片段分类相对应的广告服务器的IP源地址。
如果使用ASM,则IPTV装置使用ASM加入消息来加入所请求的IPTV频道的多播组和关联的广告组。这意味着,IPTV可以从两个ASM组接收数据分组。
如果使用SSM,则IPTV装置使用SSM加入消息来加入所请求的IPTV频道的多播组,该SSM加入消息将主内容服务器和片段广告服务器指定为多播IP业务源。
代替使用EPG服务器,可以在会话建立信令中承载上述信息,例如在基于IMS的IPTV的情况下的SIP信令中。此外,可以预配置/手动配置频道信息,例如通过对频道/广告数据的前一天下载。
在SSM场景下,可以使用源地址来标识广告片段。此外,流传输服务器可以以同步方式轮流。
由于所提出的方法也适用于不具有SSM能力的IP网络,例如IGMPv2,因此SSM的使用不是必须的。
为了进一步节省IPTV网络上的带宽,如果只有接收IPTV装置请求相应的广告内容,则广告内容服务器可以位于这一接收IPTV装置附近。
在SSM情况下,所提出的方法对于接收IPTV装置是完全透明的。该方法也可以透明地应用于ETSI TISPAN IPTV标准。本发明能够在广播IPTV频道中进行细粒度的广告分段。也可以在网络中进行用户片段分类和分配,例如,对于受黑客攻击的IPTV装置屏蔽针对该分配的商业逻辑。此外,本发明还允许使用ASM,但是这对于IPTV装置并不透明,因为它需要同时加入两个多播组,即,广告和频道本身。
根据现有技术的其他方案可能取决于由接收IPTV装置或者由所谓的接合器所解析/理解的流信令,该接合器在接合点将广告***IP流内。尽管该接合器方案也可以应用于例如ETSI IPTV标准,然而,这应用起来并不容易。显然,接合器需要具有关于用户片段的知识,以能够对适当的广告进行流传输。在本发明中,在开始阶段可以容易地使用个性化EPG(常规特征)或会话建立以分发针对片段的用户分配。
本发明不依赖于接合器,而是取决于在逻辑上耦合且同步的通用流传输服务器。除了该同步(可以使用标准装置进行同步,但这不是本发明的一部分)之外,重用标准IP机制也使得设备更加便宜。与接合器方案类似,本发明也可以应用于ETSI IPTV标准。
图1示出了TV主内容的IPTV频道传输的情形。示出了TV广播站流传输服务器、一个TV A/V内容服务器和三个广告A/V内容服务器。流传输服务器同步控制提供对所有流传输服务器的同步。该同步将导致:在给定时间点或给定时段,只接收TVA/V内容服务器或广告A/V内容服务器。
图1示出了终端用户接收TV A/V内容服务器时的情形。
图2示出了在广告间隙期间接收广告A/V内容服务器时的情形。
在上述两个情形下,内容服务器流传输到多播组地址225.0.0.1内。IGMPv3网络转发针对“多播组+服务器地址预订”的业务。该传输是经由到IGMPv3IP STB(机顶盒)的IGMPv3IP路由器实现的。机顶盒(STB)请求来自多播组225.0.0.1和组/片段特定广告服务器地址(广告服务器地址)的流。
本发明所属技术领域中的技术人员借助于以上描述及相关附图中所呈现的教导,将想到这里所阐述的本发明的许多修改和其他实施例。因此,应理解,本发明不局限于所公开的特定实施例,并且修改和其他实施例也包括在所附权利要求的保护范围内。尽管这里采用了特定术语,然而这些术语仅仅用于一般性的描述,而不是为了限制。
Claims (15)
1.一种用于在IP网络上分发TV内容的方法,其中所述TV内容包括主内容和广告内容,以及将多播地址作为连接信息发送给用户,在所述网络内关于所述多播地址分发主内容的IPTV频道,所述方法的特征在于向用户发送另外的连接信息的步骤,所述另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段,
其中,在任意源多播ASM情况下,所述另外的连接信息包括另外的多播地址,关于所述另外的多播地址分发所述广告片段,
或者,在源特定多播SSM情况下,所述另外的连接信息包括主内容的源地址和广告片段的源地址,
其中,用户的IPTV装置使用ASM加入消息来加入所请求的IPTV频道的多播组和关联的广告组,或者,用户的IPTV装置使用SSM加入消息来加入所请求的IPTV频道的多播组,该SSM加入消息将主内容服务器和片段广告服务器指定为多播IP业务源。
2.根据权利要求1所述的方法,其中,将正在分发主内容和广告内容的所有流传输服务器同步,以使得在用户处在给定时间点或时间段只接收主内容或广告内容。
3.根据权利要求2所述的方法,其中,所述给定时间点或时间段是广告间隙。
4.根据权利要求1-3中任一项所述的方法,其中,所述连接信息和/或另外的连接信息是由EPG服务器提供的。
5.根据权利要求1-3中任一项所述的方法,其中,所述连接信息和/或另外的连接信息承载在会话建立信令中。
6.根据权利要求5所述的方法,其中,在基于IP多媒体子***IMS的IPTV的情况下,所述连接信息和/或另外的连接信息承载在会话发起协议SIP信令中。
7.根据权利要求1-3中任一项所述的方法,其中,所述连接信息和/或另外的连接信息是通过预配置或手动配置来提供的。
8.根据权利要求7所述的方法,其中,所述预配置优选地是通过所述连接信息和另外的连接信息的前一天下载来提供的。
9.一种用于在IP网络上分发TV内容的***,所述***用于执行根据权利要求1-8中任一项所述的方法,其中,所述TV内容包括主内容和广告内容,以及将多播地址作为连接信息发送给用户,在所述网络内关于所述多播地址分发主内容的IPTV频道,所述***包括向用户发送另外的连接信息的装置,所述另外的连接信息取决于所述广告内容中用户正在请求的或者用户被分配给的至少一个广告片段,
其中,在任意源多播ASM情况下,所述另外的连接信息包括另外的多播地址,关于所述另外的多播地址分发所述广告片段,
或者,在源特定多播SSM情况下,所述另外的连接信息包括主内容的源地址和广告片段的源地址,
其中,所述***还包括用于使用ASM加入消息来加入所请求的IPTV频道的多播组和关联的广告组的用户的IPTV装置,或者用于使用SSM加入消息来加入所请求的IPTV频道的多播组的用户的IPTV装置,该SSM加入消息将主内容服务器和片段广告服务器指定为多播IP业务源。
10.根据权利要求9所述的***,其中,将正在分发主内容和广告内容的所有流传输服务器同步,以使得在用户处在给定时间点或时间段只接收主内容或广告内容,所述给定时间点或时间段是广告间隙。
11.根据权利要求9或10所述的***,其中,所述连接信息和/或另外的连接信息是由EPG服务器提供的。
12.根据权利要求9或10所述的***,其中,所述连接信息和/或另外的连接信息承载在会话建立信令中。
13.根据权利要求12所述的***,其中,在基于IP多媒体子***IMS的IPTV的情况下,所述连接信息和/或另外的连接信息承载在会话发起协议SIP信令中。
14.根据权利要求9或10所述的***,其中,所述连接信息和/或另外的连接信息是通过预配置或手动配置来提供的。
15.根据权利要求14所述的***,其中,所述预配置优选地是通过所述连接信息和另外的连接信息的前一天下载来提供的。
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PCT/EP2009/006831 WO2010034459A1 (en) | 2008-09-24 | 2009-09-22 | A method and a system for distributing tv content over a network |
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EP (1) | EP2243295B1 (zh) |
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CN102017646A (zh) | 2011-04-13 |
US8458743B2 (en) | 2013-06-04 |
JP2011515923A (ja) | 2011-05-19 |
WO2010034459A1 (en) | 2010-04-01 |
KR101227787B1 (ko) | 2013-01-29 |
EP2243295B1 (en) | 2018-02-28 |
JP5225394B2 (ja) | 2013-07-03 |
KR20100109560A (ko) | 2010-10-08 |
US20110030003A1 (en) | 2011-02-03 |
EP2243295A1 (en) | 2010-10-27 |
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