subject: Iptv Communications Industry Standards On The Latest Developments-iptv, Communication, Network Tv - [print this page] IPTV Standardization become the focus of attention at home and abroad. IPTV services are different countries with different forms of rapidly developing. IPTV technology and construction of large-scale diversification at this stage needs a single network to promote IPTV standardization become the hot topics. International Standards Organization has carried out several related studies or undertake research, domestic Communicate Industry has also set up a special task team is working on IPTV-related work and standards system and recent progress in urgent need of the project.
Progress in the standardization of foreign IPTV
Worldwide, there are many international organizations or regional standardization organizations set standards for IPTV services research, generally speaking still in its infancy, and many standards organizations have developed some associated with the IPTV technology standardization of documents: such as the International Telecommunications Union ( IT U), Streaming Media Alliance (IS? MA), Open Mobile Alliance (OMA), Telecommunications Industry Solutions Alliance (ATIS), Digital Audio / Video Coalition (DAV IC ), ETSI, ISO, interactive TV Union (ITV), DSL Union, the Union and the IETF and other broadband services. The standards set by these organizations can be summarized as: involving the overall IPTV service standards, video / audio compression standards, compressed file package standards, information control standards, network quality of service standards, metadata standards, digital rights management standards. Overall standards, including ISMA and DAVIC standards; media coding standards including ITU-T recommendations G. 7XX, H. 26x series and the ISO's MPEG series, in addition to international companies own video coding standard; compressed file package, including the ISMA standard proposal, Microsoft and REALNETWORKS corporate standards; transmission standard developed mainly IETF IP network transmission of information related to audio and video Standard: IGMPRTP Real-time Transport Protocol, RTCP Real-time Transport Control Protocol, RSVP bandwidth reservation protocol, TCP Transmission Control Protocol, IP internet protocol, RTSP Real Time Streaming Protocol and IP multi-point Broadcasting (Multicast) protocol.
Network quality of service in the relevant standard is still perfect; metadata standards, including ISO made some of the standards; digital rights management standards including OMA's recommendations and ISMA MPEG-4 proposal.
Domestic IPTV Standards Task Group Overview
International and IPTV-related standards (including the frame, media encoding, digital rights protection, etc.) have not formed a targeted system, but also many of the core Intellectual property rights Lies in the hands of foreign companies. China already has a developed telecommunications industry standard for IPTV, the domestic research results have been applied to the formulation of industry standards in the promotion of domestic business development, to protect the interests of domestic manufacturers will play a positive role. To meet the current situation, according to China Communications Standards Association's work plan, IP and multimedia communication Technical Committee (CCSATC1) established the "IPTV Task Force (TC1SWG2)", in full on the basis of preparation and coordination, in particular, has convened a group of number of meetings, made the first version of IPTV system, the draft standard, and IPTV services family of standards (first edition) of the first seven issues of the draft.
China Communications Standards Association has ATM-based video-on-demand business, network and systems, and IP-based networks to carry out research on standardization of information on-demand systems, a number of research results can be applied to development in the IPTV industry standards; the current system of radio and television departments are developing and DRM, and video coding standardization of the related research work, both parties had some degree of communication; China Telecom and China Netcom And other companies have their own characteristics suitable for drafting enterprise standards; Ministry of Information Industry China Academy of Telecommunications Research and other units jointly submitted to the ITU-T "F.741 and description of video-on-demand business needs," such as international recommendations for national standards future transition to international standards basis.
Digital Audio Video Coding Standard Working Group (the Working Group AVS) for "Information Technology: Advanced Audio Video Coding" standard, including the system, video, audio, digital rights management and protection of four major criteria and consistent sex Test Other supporting standards, filled a second-generation source standard, blank, representing the country in IPTV technology, intellectual property rights on some of the core began to make progress. Industry standard-setting to various views taken into account, progressive research, proper balance in the future development of additional business needs, to consider the need for internationalization, but first based on the domestic.
IPTV Standards in key issues that need to
Research work in the standard solution to focus on intellectual property issues to consider, bearing network problems, system architecture issues, uniform coding standards, standardization and interoperability within the system interface to the problem, the system of open-ended questions.
- Intellectual Property Issues IPTV business development in the current technology used there is a series of intellectual property rights, in addition to an impact on equipment manufacturers, operators will also impact on business development; for digital rights protection mechanisms include use of the OMA program the patent fees for operations policy and always be a hidden danger; IPTV business with some of the video coding technology in addition to the manufacturing equipment required to pay the patent fee, operators also need to increase every year to pay foreign patent fees; with their own knowledge property rights, although the AVS video coding standard in efforts to promote, but the use of the standards development of related products are still in the initial stage, there are currently some difficulties in large-scale application; more hidden problems are still at the patent; industry standards adoption of relevant technologies must consider this issue, and to illustrate the user.
- Bearer network problems
Our existing broadband IP networks (mainly ADSL access) to the number of users is growing rapidly, but the existing access network can not fully meet the demand for video services such IPTV; can guarantee IPTV business services quality requirements of the IP network should have good stability, bandwidth, delay, jitter and error and other aspects of Internet business is different from the previous requirement, this is a long-term research project; the current network to support multicast limited number of routing devices, if a comprehensive network to provide multicast services need to be modified, the cost will be considerable; to ensure quality of service to customers under the premise of the general promotion of IPTV services, to carry the network on a large scale transformation, including access network, end-to-Q
