| Metropolitan Area Networks (MANs) interconnecting high-speed backbone and low speed access networks mostly rely on IP Router and SONET/SDH Transport layer. Although SONET/SDH combined with WDM technology has increased transmission capacity, the efficiency issue regarding data transmission over a circuit switched network is still present. In addition, IP Router is not scalable solution in terms of cost, size and power requirement. Recently, access networks starts to provide a large amount of bandwidth by employing advanced LAN technologies, such as xDSL, cable modems, passive optical network (PON), and wireless access. Consequently, metro networks are expected to suffer a lack of bandwidth to support access network traffic in the near future. Although optical network solutions would solve such a metro gap problem, it is not simple for service providers to deploy a new optical MAN solution over a legacy MAN. While high bandwidth and reliable service are in users' interests, the reduction of OPEX and CAPEX is an important consideration to the service provider. Optical burst mode transmission allows different senders to transmit through the same channel, and saves network deployment cost. Besides their resource sharing features, burst mode transmission is feasible to data transmission, because it can achieve on time bandwidth provisioning for the network traffic having bursty nature. Furthermore, Burst mode transmission can provide scalability with optical bypassing capability. In this talk, the author proposes new metro network architecture using burst mode transmission technology. Its performance analysis and implementation issues in reality are discussed. The solution is verified using experimental testbed as well as simulation model. |
