For the introduction of broadband access network, sophisticated and strategic decision is required because of its enormous initial investment and long establishment period. This thesis suggests the optimal strategy which evolves into broadband access network. ADSL(Asymmetric Digital Subscriber Line), FTTC(Fiber To The Curb), FTTH (Fiber To The Home), HFC(Hybrid Fiber Coaxial) and HFR(Hybrid Fiber Radio) available in present times are analyzed as the alternatives of the broadband access network.
For each alternative, economic and technical problems are considered within the scope of competitive environment. In particular, I placed increased emphasis on economic evaluation. Considering the density of population, the penetration rate of service, and the price trends of facilities, I make up an economic evaluation model. In the model, the cost per line for each alternative which includes the cost of operation, administration and maintenance as well as the cost of network deployment is calculated. In addition, profitability analysis is also incorporated into the model.
In the low density area ADSL and HFR are superior, whereas in the high density area ADSL and FTTC are superior. ADSL and HFR are also superior under low penetration rate, ADSL and FTTC are superior under high penetration rate. As a result, ADSL is generally acceptable, but it may create additional cost in transfering to FTTH afterward. While, on the technical point of view, FTTH is the best technique, followed by FTTC, HFR, HFC, ADSL.
Finally, effective solutions for the different operators which are incumbent local telephone network operator, new local telephone network operator,and CATV operator are suggested. In addition, I suggests the government's role for effective evolution.
