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We propose a novel communication system for an emergency fire response team, which provides Internet service on the way to and in the disaster area. The system is composed of a multi-interface mobile ad-hoc network (MANET) router, a Global Positioning ...

Information and communications systems in Japan were badly damaged by the great earthquake and tsunami on March 11, 2011. Their importance as societal infrastructure was recognized strongly. Since 2006, NICT has been developing a resilient network, ...

Wireless mesh networking has been a very hot research topic in recent years. Large Cyber-Physical Systems, such as community health/security-monitoring networks and vehicle communication networks, are using wireless mesh network technology to build data ...

The new generation network or future Internet will be heterogeneous not only in terms of link layer technologies but also in network layer protocols and addressing (or locating) schemes. The ID/locator split concept will be applied to the protocol stack ...

Delaunay overlay networks have a Delaunay graph structure, which has spatial locality. This feature is useful for distributed spatial computing, distributed geographical database systems, and geometric routing networks. An incremental construction ...

Nerve Net is a concept of regional wireless access platform where multiple service providers can provide their own services with the shared use of the network and sensors, making various context-aware services practical. It works as the nervous system ...

With the emergence of functional wireless terminals, increased network capacity is needed for wireless LANs. Considering the limited available frequency channels for wireless LAN, improving spatial channel reuse performance of MAC protocol is a key ...

The ID/locator split concept has recently been introduced in the standardization activities of ITU-T Study Group 13 for use in future networks. To contribute to ITU-T's initiative, we first propose a naming system to configure host-names and identifiers ...

Mobility is not natively supported in the current Internet because it uses IP addresses as host or session identifiers in the transport and application layers and as locators in the network layer. In the mobile networking environment, a host should be ...

This paper identifies communication system functions and technologies that a local region, individuals living in that region, and various communities to which each individual belongs require and propose a community communication service platform for ...

In spite of recent advances of personal communication devices and access network technology, users are still facing the issues such as high device maintenance costs, complication of inter-device cooperation, illegal access to devices, and leakage of ...

Personal devices and access systems have recently become more diversified, and there is a need for technology that enables users to flexibly and securely create their own private services in a user-driven manner, utilizing the presently available access ...

A context-based adaptive communication system is introduced for use in heterogeneous networks. Context includes the user's presence, location, available network interfaces, network availability, network priority, communication status, terminal features, ...

We have designed and implemented a compact and simple network oriented device, a NetSpeaker, which mainly consists of a DA converter, an amplifier and buffers, in order to enable setting many terminals and realize ubiquitous computing environment. It ...

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