Tell us a bit about your professional interests. I started my career working in telecommunications for about 10 years, then joined Toyota 13 years ago. My early time at Toyota was focused on wireless communications—including PHY, media access control, and security and privacy. For the past seven or eight years, I’ve worked on broader topics, trying to answer the question, “What should Toyota do...

An opportunistic network (OPPNET) is a wireless networks without an infrastructure. In OPPNET, communication intermittently occurs when one node meets with another node. Thus, a connected path between the source and destination nodes rarely exists. For this reason, nodes need not only to forward messages but are also to store and carry messages as relay nodes. In OPPNET, several routing algorit...

As the use of WLANs based on IEEE 802.11 increase, the need for QoS becomes more obvious. The upcoming IEEE 802.11e aims at providing QoS, but its contention-based medium access mechanism, enhanced distributed channel access (EDCA), provides only service differentiation. In order to provide QoS guarantees, we have proposed an extension called EDCA with resource reservation (EDCA/RR), which enha...

In an opportunistic network (OPPNET), the forwarding schemes for adhoc networks are not applicable since there is no complete path between the source and the destination node and relay nodes should store messages when no forwarding opportunity exists. Recently several proper schemes have been proposed in an OPPNET. Among them, floodingbased schemes result in very high network traffic and low tr...

In this paper, we focus on developing driver-in-the loop fuel economic control strategy for multiple connected vehicles. The control strategy is considered to work in a driver assistance framework where the controller gives command to a driver to follow while considering the ability of the driver in following control commands. Our proposed method uses vehicleto-vehicle (V2V) communication, expl...

The proliferation of the diverse information in the Internet makes the information gathering via a single mobile agent difficult. In addition, the limitations of the traditionally sequential task restrain the single agent to be applied to large, complicate applications. As a result, the applicable scope of a single mobile agent is limited. The advent of the collaborating multi-agents infrastruc...

This paper presents a predictive mobility management framework with the secure context management in mobile networks. We devised the authentication method for seamless handovers that exploit the knowledge of the mobility prediction. Previous Access Router (AR) forwards the preestablished context information to the new AR in the predicted target wireless cell where MN might move in the near futu...

In this paper we present a visual analytics approach for deriving spatio-temporal patterns of collective human mobility from a vast mobile network traffic data set. More than 88 million movements between pairs of radio cells—so-called handovers—served as a proxy for more than two months of mobility within four urban test areas in Northern Italy. In contrast to previous work, our approach relies...

We investigate the relationship between the motions of the same peptide loop segment incorporated within a protein structure and motions of free or end-constrained peptides. As a reference point we also compare against alanine chains having the same length as the loop. Both the analysis of atomic molecular dynamics trajectories and structure-based elastic network models, reveal no general depen...

The recent years have witnessed a tremendous growth in the number of mobile internet users and the need for mobility support is indispensable for seamless internet connectivity. Mobile IP is a mobility support protocol that supports roaming across multiple Access Points without having to re-establish the end to end connection. In this paper, we take the position that despite several challenges ...