IPTV?? Triple play in the beginning – multimedia, IPTV, network convergence – HC Network Communication industry
IPTV and IP networks and IP-related business only, but also with the TV network and business operations. Three operations with the current network (cable TV, Internet and telecommunications networks) and its business directly related to, IPTV will be triple play services to start. This paper analyzes three IPTV, IPTV is one of the operational capacity, and the second is the ability of IPTV networks, IPTV and triple play their third. In general, the operational capacity of adaptation to network capabilities, the business can develop, resulting network can facilitate the development, on the contrary can only be a speculation.
1 Introduction IPTV is one of domestic and enthusiastically participated in the business, from surface IPTV sense, both with IP related, that is, with the IP network in IP-related business, but also with TV related, here also involves TV network and business. Obviously, the three operations with the current network (cable TV, Internet and telecommunications networks) and its business directly related to, IPTV will be triple play services start.
Interpretation of the IPTV operator's position is closely related. From telecommunications operators and Internet network operator perspective, IPTV is the TV program with IP network for delivery, it is a telecommunications and Internet services to television as a source of information services; from the cable television network operator point of view to consider, IPTV is cable television network to transmit television programs, will also be used to provide IP information services. Can be seen, on the one hand because the position of different operators whose interpretation is different, reflecting differences in thinking between the two. On the other hand, this position apparently represents the expectations of their desire to enter other business areas. In this sense, therefore, said, IPTV will be a triple play to start.
The following three aspects of IPTV, one is the ability of IPTV business, the other is the ability of IPTV networks, IPTV and triple play their third. In general, the operational capacity of adaptation to network capabilities, the business can develop, resulting network can facilitate the development, on the contrary can only be a speculation. Therefore, the analysis of these three issues are very important.
2 IPTV operational capacity First look at IPTV business. Different operators have different business location.
From the perspective of telecom operators, IPTV is the TV business in the IP network forms of organization and delivery. Here, IPTV has four forms of business, that is live television, mobile television, digital pay TV and TV loop. Live TV is currently broadcast network television programs transferred over from using interactive two-way communication network type (IP network) to complete the live television transmission; time-shifted TV is a user at a certain time period (eg: 48h), the free to choose a certain channel to see a particular program, in this occasion, television channels are no longer in the form of continuous playback (of course you can), and more are existed in the form of programs, the user is a program for the unit to select and watch their TV channels and TV shows when connected is the only TV program in the response to them, in order to facilitate user selections from television programs are based on single channel in order to arrange the. From the technology, the time-shifted TV and TV has had little to do, it is more close to the VOD (VideoOnDemand) business, that is, on-demand video programming on demand business. In between the form of a business cycle of TV programs broadcast operations, television programs broadcast business cycle is generally from time to time (such as: 5min) will be re-broadcast a program, it can be a program, it can be a channel. This work has the advantage of the user as long as such a limited time (eg: 5min) you can see that he wanted to see the show, the more people share, the higher the efficiency of the system.
Cable operators from the perspective of view, IPTV is the use of cable television network to provide digital television programs and information services other than television, because the current is fully IP-based information services, so IPTV is the use of cable television network to provide IP information services. On cable operators, it is very natural requirement, because the network operators, expand their business is their expectation of the rapid development of digital technology, especially digital cable networks, cable networks make greatly increased data transmission capacity (one-way, broadcast), digital television is certainly a major cable network business, but this business because of its poor business model and the real economy domestic users endurance limit its commercial application also limits its use of network resources. IP information services cable operators into the eyes of the natural aura.
Obviously, different network operators, IPTV, from their point of view of their views are necessarily different, they all have in common is that IPTV can enter through the opportunities in their respective fields, should be said that the two has a rational point, generally speaking, IPTV is indeed the two types of network operators the opportunity, it is likely to be the starting point of network convergence.
3 IPTV network capacity Let's look at networks, triple play is the beginning of the line starting from the user's. Hope to solve with a subscriber line telephone, television and data services (ie telephone network, Internet, TV) access. As the characteristics of cable broadband subscriber lines, which after transformation and digital two-way after the three networks in the user line of business in the transmission process of integration (mainly radio and television need a high concurrent bandwidth, other network access technology is difficult to do), so triple play hot start is HFC. Of course, HFC two-way transformation of this is not easy to reverse the noise within the connection pool makes the PoP limited to 500 the number of users within, and it addresses only the user access to the last paragraph, which is the last mile user access income. HFC is the work of the bus mode, the downlink of information between users is not isolated, for user information privacy and sound business model, users also need to address the downstream problem of information isolation, its technical difficulty is also very complicated.
Over time and technology, for the last mile of broadband users access to a variety of current technology: a Gigabit Ethernet subscriber line, a single fiber pair of waves (PON + radio wave ) and others have the ability to solve a physical line last mile of telephone, television and data services, access to three types of business. Seems more available technology. But a closer points
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