By Alcibiade Zaganiaris, Kjell Stordahl, Borgar Tørre Olsen, Sotirios Markatos (auth.), Leif Aarthun Ims (eds.)
The entry community is anticipated to be one of many significant battlegrounds of telecommunications community operators, in view that improvements of the present narrowband entry community may be the severe consider offering multimedia broadband companies in a aggressive industry. the long run broadband entry community structure should be versatile sufficient to successfully help the supply of a whole set of broadband and narrowband companies with a variety of capability calls for. quite a lot of broadband entry applied sciences can be found. in addition, the main matters within the upgrading of the very fee delicate entry community are monetary in addition to technological, either for incumbent and new entrant operators. hence, so as to establish minimum-risk introductory concepts the commercial viability of entry community broadband improvements has to be rigorously assessed. despite the fact that, regardless of the sure desire for techno-economic reviews, only a few books were released during this box. one of many purposes may be that broadband entry community upgrading in simple terms very lately received huge attractiveness as a key problem for broadband supply. Secondly, this type of strategic paintings and those reports are usually thought of particularly delicate by way of operators, and hence either effects and methodologies usually are not frequently available. Thirdly, the paintings stated during this publication in lots of respects was once a huge pioneering attempt, which fairly ambitiously aimed toward modelling the total life-cycle bills and profit streams of entry community improvements, in place of numerous different efforts, which frequently are restricted to natural funding expense comparisons.
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Additional resources for Broadband Access Networks: Introduction Strategies and Techno-economic Evaluation
1 is a typical public switched telephone network (PSTN) access network infrastructure. The cable operators typically have a coaxial cable distribution network for broadcast television services. The signals are fed from a headend, which passes some tens of thousands of homes. The headend serves several hubs, which typically passes some thousands of homes. Optical fibres are usually used for the transmission of signals from the head end to the hubs, whilst the network between the hub and the subscriber is a coaxial cable network, with bandwidths of 300 MHz, 450 MHz, 606 MHz, 750 MHz or 860 MHz.
The answers from the experts are based on the assumption that the household demands the application. As pointed out before a household will order only a limited number of applications. Type of application Telecommunity/Telemedicine ......... Video on Demand ........................ Remote education, home .............. Home office, advanced ................ Videophony .................................. Home office, simple ...................... Interactive TV/Specialised channels Multimedia telegame ....................
Video distribution services such as television broadcasting, pay per channel (pPC), pay per view (PPV) and near video on demand (NVOD) require a fixed amount of bandwidth per customer. Additionally the establishment of connections on demand and the control of information flow and format requires the presence of a signalling channel up to the nearest network element capable of realising such functions. Mobility implies that some category of services can be implemented either on a fixed architecture or on a wireless architecture only, at least in the distribution part.