Naotoshi Watanabe

Viewing approaches to a large scale Internet backbone with ATM technology

The explosion of the Internet is still continuing due to the expansion of the number of users and multimedia services. To replace the conventional router network, a new paradigm of some multi-layer switching techniques are proposed in the standardization sectors and forums. We estimate the best solution for a very large scale Internet backbone, i.e. a nationwide scale. After estimating the size of the Internet in the future, we study the high speed internetworking solutions. We especially compare the multiprotocol label switching (MPLS) and CL (connectionless)-network from the view point of scalability and the size of the buffers of each node.

Traffic engineering for IoT

Considering IoT environment, where even network nodes are having not only data transfer function but also data processing function, we are studying which processing entity should execute an IoT application and how to connect the processing entity with terminals requesting the application. Then, we show 4 types of traffic engineering (TE) to minimize delay by the selection of processor and the rearrange of route. Next, we evaluate the complexity of algorithm for each TE type and clarify the effectiveness of each TE in term of the reduction of delay for delay relatively sensitive application. Finally we map IoT applications with adoptable TE types.