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Managing communication in pervasive environments is a difficult challenge because of characteristics such as: no central server and frequent disconnections. Furthermore, services to be composed for coordination are sometimes distributed in multiple networks. In that case, intermediate nodes linking these networks have to route communication data toward appropriate destinations. However, incorporating...
The objective of our research is to develop a wireless sensor network construction system by teleoperated mobile robot. Our proposed system is that mobile robot carries the sensor nodes and deploys them for constructing wireless network in the working environment. For deployment of the sensor nodes, we introduced to estimate maintainable data transfer speed based on statistic approach. When estimated...
After the earthquake, it is very important to recognize the situation of the disaster area as soon as possible. Therefore, the objective of our research is to realize information gathering system applying wireless sensor network technology. This paper describes about development of a novel camera node for gathering the information and also experimental results by using the camera node via wireless...
This paper discusses a mobile robot teleoperation system via a wireless sensor network (WSN) to support for rescue operation in underground mall at disaster situation. For this purpose, the teleoperation interface server that controls communication between an operator and a robot via WSN was developed and a routing protocol based on AODV-uu was installed to WSN. The operator can teleoperate of mobile...
This paper describes a wireless camera node with passive pendulum mechanism. We focus on transferring captured movie via wireless network and easy setting-up operation at demonstration site.
As mobile terminals in ad-hoc networks have low battery resources, designing light-weight routing protocols has become a significant goal along with other power-saving technologies. One way to meet these requirements is to utilize cars as intermediate nodes in mobile ad hoc networks. However, the high velocities of cars may seriously degrade network quality. We need an efficient routing protocol that...
In Mobile Ad-hoc Networks (MANET), wireless links' capability varies in transporting data packets on their sizes. Two main reasons are topology changes due to mobility and higher bit error rate on wireless links over longer distances. Many researches have been carried out to adopt more reliable links in making stable end-to-end routes. However, these approaches depend on link history which is difficult...
This paper presents an overview of WISER which is a communication architecture for multiple mobile robots with short-range wireless links aiming at cooperative sensing. WISER deals with several features which were not observed in conventional wireless ad hoc networks: intentional mobility and allowance for disconnection. In this paper we describe the design and the prototype implementation of WISER
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