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[Photo] IPTV technology, system components and its development trend-IPTV, video broadcasting, multi

[Photo] IPTV technology, system components and its development trend-IPTV, video broadcasting, multi

Article by hi joiney









Chapter Overview 1.1 IPTV ReviewBooming broadband IP network operators to provide a unique business opportunity. Applications, video, games, stocks, e-commerce, have become ever wonderful for broadband.   To seize the opportunity, IP network operator needs to build its physical network based on a set of high value-added services for broadband network operations support platform. On the one hand, to attract a variety of value-added service providers to provide services in this platform, on the other hand, the platform will provide users with a simple bridge for access to services. Therefore, IPTV services as a value-added services have been charged with the market conditions. IPTV video broadcasting systems are mainly there for a long time Multicast IGMP protocol technology and based on existing IP metro network for the actual operating conditions and operator demands, proposed management platform architecture and software architecture design, in theory solution to the client from the center of the video broadcasting technology and management issues. 1.2 IPTV related concepts IPTV: practice is to use broadband multimedia networks to deliver a clear television programs, its image quality is much higher than the current audio cable signal quality, up to DVD surround sound audio effects, and even the AC-35.1-channel effects. The transmission program “Channel Number” is also more than the traditional wired networks, traditional cable television transmission up to about 70 analog channels, and broadband multimedia network set up to transmit more than 200 DVD-quality digital TV programs. Live: The use of UDP protocol, using IP multicast technology, through an internal LAN or the Internet to digital video programming broadcast to the desktop computer, customers can use real-time PC, or set-top box can accept the broadcast, it can live. Editing and Broadcasting: The timing of the stored program for a multi-channel digital video programming simultaneously in LAN or Internet play, each user on the computer to use the TV’s way of random connections, select, switch, receive the necessary programs. 1.3 IPTV key technologies?? IP MulticastConsider the characteristics of IPTV business, require network support for IP multicast environment. In video transmission, IP Multicast technology has its unique advantages?? In the multicast network, even if the number of users doubled, the trunk does not require increased bandwidth, so that network operators can significantly reduce the cost of investment. Multicast is to allow one or more of the sender (multicast source) sends a single packet to multiple recipients (once, while the) network technology. Multicast source to send packets to a specific multicast group, and only belong to the multicast group address to receive the data packet. Multicast can greatly save network bandwidth, because no matter how many destination address, in any of the network links only send a single packet. It improves data transfer efficiency and reduce the possibility of backbone network congestion occurs. Multicast group of hosts can be in the same physical network, you can also come from different physical network (if any multicast routers support). The network model is shown below: Figure 1 Multicast Network 1.4 this work to be done1, the program selection Provincial telecommunications network for the actual situation in sub-multicast video transmission Multicast and Unicast Unicast two methods proposed for IPTV multicast network access bandwidth, more in line with the existing backbone bandwidth is enough and the lack of status, multicast can significantly reduce the backbone bandwidth, but that each terminal have received high-quality video programming. According to provincial telecom operators to manage the core features of proposed management platform designed to target the provincial telecom operators, telecom operators as in municipal operations is not completely right, so give up to municipal programs. According to the multicast backbone of the provincial level, single-center proposed provincial and provincial-type programs distributed IPTV IPTV program, both programs are likely to be used in practical applications, it is proposed that two kinds of program design. 2, protocol and Theoretical Review Based IPTV business properties, select the IP multicast technology as the basis for building IPTV services. Discusses the IP multicast technology, UDP and related technology constitutes agreement to introduce encryption, key technologies, authentication works. 3, IPTV system construction Discusses IPTV services constitute great works.4, IPTV IPTV system construction and management system software architecture design Discuss design ideas and IPTV IPTV system management software architecture design



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IPTV business conditions are not ripe standards embarrassing-IPTV, H.264, set-top box – HC Network b

IPTV business conditions are not ripe standards embarrassing-IPTV, H.264, set-top box – HC Network b

Article by jekky









While the just-concluded International Telecommunications Exhibition, 18 Road, across the board manufacturers have claimed IPTV Products intended for practical commercial IPTV Operation IPTV is already difficult to set the threshold very high, they decided to adopt the most stringent manner to ensure that the eyes of the killer application of the mature floor, and really squeeze the ring, but 45.

  Outskirts of Beijing secret test In about July, when China Telecom, China Netcom And the China Communications Standard Association of IP and multimedia communication Technical Committee (CCSATC1) combined with 5 large equipment manufacturers?? ZTE Huawei, Alcatel Shanghai Bell, Siemens And UT Starcom, a secret joint specification Test. It is understood that this test has been carried out about 3 months, lagging behind China Telecom in July in the first test.

CCSATC1 Chairman Jiang Lintao revealed that at present the Committee in its business needs, including IPTV, IPTV platform, the overall architecture, IPTV STB Specification, set top boxes and IPTV platform interface specification, IPTV operators and content platform operations platform interface requirements, IPTV on the DSLAM equipment and the technical requirements Intellectual property rights Research, including a number of research projects, and strive to come up within 3 months of China’s first IPTV standard draft. Although the vendors involved in testing different solutions, the Committee is expected by the norms agree on the fundamentals.

According to report, Telecommunications Research Institute from the beginning divided into several groups, each exchange, and then finishing the first draft, respectively, further discussion, comments, discussions are completed, the formation of the memorandum. Some of the vendors participating in the test, said the options included in this specification is very comprehensive, not necessarily each vendor can do, of course, will not affect future purchases, just prior to the formation of the first large-scale commercial draft specification, albeit a thoroughly, but it hoped the introduction of this specification can be useful for future selection.

Said that due to the norm-setting strict, some foreign companies because of certain legal provisions were norm-setting Organization Turned away.

More important than technology is the businessChina Telecom in July in the first test conducted, only Shanghai, China may tend to think H.264 And to participate in the second test, the vendors began to have widespread support for H.264, which also affected the final Shanghai Telecom uses H.264 as the standard result.

Initiator Onewave technology, however in the second test, not on the list, according to senior vice president of its money out told reporters in July when the first test of China Telecom, China Telecom, commissioned by Shanghai Telecom to test list confirmed by the headquarters, while the second test is due to hurry Shanghai Telecom IPTV, leading to the test on their own, so the two tests are not the same list. But the end result is far beyond the headquarters unexpected.

According to the professional development of the only set-top box in communication with the Island electronic manufacturers responsible for overseas expansion, said Dr. Cao Lihua, compared to H.264, the MPEG 4 has been very stable, and cost advantages, Shanghai Telecom with H.264 standard has a strong forward-looking, but there are Risk.

Reporter learned that this is because IPTV must go because the front docking system, the R & D set-top box that will undoubtedly cause a lot of pressure. Set-top box device is very complex, in a test of China Telecom, the product almost from scratch with the Island change to the tail, taking into account future business upgrades and improvements, if change in front-end equipment, set-top boxes change accordingly. So it has a professional and strong after-sales team will also be considered for operators in the world. Although the H.264 MPEG4

relatively expensive cost a lot, but because the manufacturers IPTV fast tracking, Expert Forecast products based on H.264 can be out within 3 months of the program, will mature within six months, the price impact of the terminal by chip prices will drop accordingly.

Insiders said operators prefer seamless development of technology, it embodies the business is more important than technology.

Precocious Apple ? As the first national IPTV standard, Jiang Lintao and his organization role to play. Starting from August, they held a number of closed-end row Meeting To strive in a short time for the domestic commercial practice IPTV operators to develop a reference. Such a powerful line-up will be what we offer to an IPTV “meal”? Led by the government or the operator will? All of these are unknown.

But the most worrying is that China still does not appear in the current large-scale commercial success Case Before it is too early to develop standards for IPTV? China Telecom Guangzhou Research Institute of Sun Jing said: “The view of the current application status, in addition to on-demand and broadcast services may be a unified standard, other standards for IPTV services is also difficult to form.” Abroad there is a mature approach is to first program, then the standard, just the opposite of the risk. According to Sun Jing said, from Shanghai Telecom’s IPTV test results to see all kinds of IPTV programs, there are still many problems, large-scale commercial and technological conditions not ripe “without a mature program, the standard as empty talk.” Sun Jing said.

Si Hua Qian Ming Senior Vice President of Science and Technology also expressed similar concerns, he said: “The standards for IPTV is very important, but at this stage, it is not without standards do not IPTV, is still an urgent task or complete technology solutions made to promote the value of a set of large-scale commercial success stories. “

Standards concern IPTV is a complex system, if not based on open standards technology to support expansion of both systems, or system upgrade, the future, there are some difficult issues. The so-called skin hair adhere, large-scale promotion of IPTV soon in time, the development of relevant standards to guide the implementation has become a top priority.

For Streaming Media Technology and IPTV technology, ISO and related manufacturers already have the relevant protocols and coding standards or recommendations. In this regard, China has made many useful attempts have such a number of telecom operators and chip manufacturers, equipment manufacturers, terminal manufacturers and even the content of such operators and content providers including the formation of many joint, carried out research related to enterprise standards and development work. According to report, Alcatel Shanghai Bell is one of the main driving



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ATCA architecture based on application-IPTV-IPTV CDN communications industry – waist seal and girdle

ATCA architecture based on application-IPTV-IPTV CDN communications industry – waist seal and girdle

Article by jekky









About CND CDN English full name is Content DeliveryNetwork, or Internet content distribution network. Construction of a new network means that it is able to publish in the traditional IP network optimized for broadband-rich media and the network cover; and from a broader perspective, CDN represents a quality-based network service model and order. In short, content delivery network (CDN) is a strategic deployment by the overall system, including distributed storage, load balancing, request redirection and web content management four elements, and content management and overall network traffic management ( trafficmanagement) is the core of CDN. By the user and server load near the judge, CDN to ensure the content to an extremely efficient way for users to request services. General, content-based caching server, also known as proxy cache (Surrogate), which is located in the edge of the network from the user only “hop” ( singlehop) away. Meanwhile, the proxy cache is the source of the content provider server (usually located in the CDN service provider’s data center) is a transparent image. This structure makes the CDN service providers to represent their clients, that is, content providers, to provide the best possible end user experience, and these users can not tolerate any delay in response time for requests of. With currently available compared to other content distribution models, CDN content delivery network emphasized the importance of. Content through the introduction of active management and global load balancing, CDNN fundamentally different from traditional content distribution models. In the traditional model of content distribution, content publishing completed by the ICP application server, the performance of the network only as a transparent data transmission channel, the performance of such transparency of quality assurance in the network just to stay level in the data packet, and not distinction between the content of the object under different quality of service. CDS: content distribution server, for content distribution, to provide data directly to users usually in order to load share the form of work; MS: Management Server, complete user and system management, load balancing and other functions. Usually work as hot standby; ATCA architecture based IPTV CDN center ATCA veneer used to achieve content distribution server and management server ATCA structure built with carrier grade CDN Center Evaluation: Computing performance Achieve CDS and the calculation of blade aTCA MS, the general use of the latest dual Xeon or Quad Xeon design. Computing performance and a single fully comparable to mainstream server performance. The whole system to achieve high-density parallel computing, single system for maximum support of 16 parallel blade [includes data exchange blade. Network performance Blade chip all the Gigabit Ethernet port configuration Blade external network port configuration compatible with optical Interconnect architecture aTCA unique Base Channel and FabricChannel above the maximum realization of data exchange within the 2.4T Fabric Channel can carry Ethernet, FC, Infiniband, Star Fabric andPCI Express And similar to the internal exchange of IP is similar to the help of Fabric Channel and FC switch blades to achieve the internal exchange of FC and FC interface unification External Interface ATCA framework for standardized I / O Interface: PMC, PTMC, AMC Facilitate the achievement of E1, ATM, FC, Ethernet, and other telecommunications network access System Features Natural Carrier Grade Architecture Design High reliability and high availability, high scalability Modular architecture of the management interface to facilitate users to achieve local and remote management and upgrades Economic characteristics Mainstream global industry standard designs Good Ecosystem, cost-effective Modular design, accelerate speed to market Prospects In with Intel, Motorola, ADLINK, Rittal, Schroff as the representative of the great efforts of PICMGaTCA Industry Alliance, the national mainstream TEM manufacturers Huawei, ZTE, UTStarcom has begun to try to aTCA framework and mainstreaming its core equipment application, and such as 3G, IPTV field for successful commercial applications. Moreover, operators are also very popular aTCA build devices and applications, its carrier-class design, modular framework of open standards, will the telecommunications industry, the industrialization process of the network play a critical role. [Keywords]: IPTV Comment Large In Small



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Harbin Netcom: diversified modes of cooperation to explore IPTV-IPTV, CNC – Communications Industry

Harbin Netcom: diversified modes of cooperation to explore IPTV-IPTV, CNC – Communications Industry

Article by jekky

As one of the few domestic IPTV Success Stories, Harbin model what distinguishes? Factor in its success what is?   2004 7, Heilongjiang Netcom in Harbin, Heihe, Yichun to proceed with the three test and operational test IPTV networks, IPTV quest has taken a welcome step on the road. World Telecommunication Day 2005, Harbin, China Netcom launched IPTV service, becoming the first IPTV commercial city. By the end of April 2006, Mudanjiang, Heihe smooth opening of the two IPTV services, IPTV users in Harbin nearly 50 000, formed by the industry keen to learn of the “Harbin model.” In late 2006, Harbin, Heihe, Mudanjiang three IPTV subscribers exceed 10 million mark, so far the global IPTV Heilongjiang become the largest regional user groups. Diversified business model As the first one to eat “crab”, in Heilongjiang Netcom IPTV new business development on the lack of experience to draw on. To this end, Heilongjiang Netcom IPTV project set up a group forward. In the most critical issues the license, they also won the national first IPTV operator license SMG Shanghai Media Group has established business cooperation, the two sides of the operation of the broadcasting business content for the network operator responsible for operating the communications, two major carriers operating in collaboration, joint marketing, co-operating income into the new model, to successfully cross this bottleneck. May 17, 2005, to the World Telecommunication Day as an opportunity to take the lead in Harbin, Heilongjiang Netcom launched IPTV services, this is the first commercial IPTV service city. In the development of IPTV in 2006, Heilongjiang Netcom adhere to the “new media, new business, new value-added” development ideas. Year on April 28, Mudanjiang, Heihe the two IPTV services also began to distribute telephone numbers, Heilongjiang, Harbin, China Netcom IPTV services range from rapid expansion to other cities. They also insisted on the business model diversification, increased demand value-based package + package (ie “1 + N”) business model, enrich the standard tariff. Heilongjiang Netcom IPTV development in 2006 formed the “four changes”: the user group from the high end user base to all needs of users change; tariff policy by the business to a single package to “1 + N ‘mode as the core of the multi- Product category tariff changes; business to access by the means of positioning, content applications for the core business of broadband applications to content-based new media change; marketing strategy and by an independent business to broadband access, telephone, PHS, etc. the development of many types of bundled services, mutual penetration changes. This development of Heilongjiang Netcom IPTV played a good role in promoting. Some experts think that only the operators as the main body of the whole IPTV industry chain, while the joint multiple content providers and content aggregators to provide services to end users in order to fully reflect the difference between IPTV and traditional television. In the current industrial policy is still unclear, IPTV limited number of licenses issued under the premise of cooperation with several content providers can not realize the time being, be a valid approach Harbin move. 4:00 inspiration Today, IPTV development in China can be described in full swing. Heilongjiang Netcom time in more than a year, a series of fruitful exploration and bold attempt to provide the industry some useful inspiration. 1. The development of IPTV business must follow the relevant national policies. The relevant state department has issued a number of related management practices, therefore, we must grasp the business development of policy direction, local conditions and reasonable planning and positioning of business models, according to local conditions to promote the development of IPTV business. This is the basic guarantee of the development of IPTV business, the decision will become industry value chain parties and gradually become an important guarantee. 2. The IPTV business operating model. Different industries, different enterprises and competition and cooperation between the full game, IPTV and digital TV are not interchangeable between the relationship, but in cooperation to achieve common development. The existing business model is still relatively simple, should actively explore diversified modes of cooperation, and gradually introduce other operators qualified content providers, increased integration with the local radio and television content with the resources of society’s cooperation and further enrich the content of IPTV services to carry out complementary cooperation, and multi-mode operation for mutual benefit. 3. IPTV services on construction investment of thought. Fixed network operator has an excellent network coverage and large customer resources, Heilongjiang Netcom in the development of IPTV business, in-depth excavation and full use of existing resources, the use of existing networks and optimization. However, as the user continues to expand the scale of the existing metro and the city to the county, county to the township’s transport network can not carry IPTV services, to accelerate business development, there should be a considerable amount of upfront investment and IPTV- drawing on input and output, a big question mark. 4. IPTV services on sustainable development and innovation of thought. IPTV in the IP and the TV are not substitutes for one another, but the combination of complementary. IPTV to its differentiation of demand, time shifting, multicasting, and interactive features to attract the attention of consumers, through business, innovation, development of distance education, telemedicine, video communication, television messages, television and other telecommunications value-added services Yellow Pages eventually explore a telephone, Internet, TV, mobile communications, “Four in One” integration of the road, thereby enhancing the user’s usage of IPTV services. This is the sustainable development of IPTV business inexhaustible source.



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