2007 Fiscal Year Final Research Report Summary
Implementation of Active Mobile Sensing Networks
| Project/Area Number |
16300015
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Computer system/Network
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| Research Institution | Shizuoka University |
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Principal Investigator |
MIZUNO Tadanori Shizuoka University, Graduate School of Science and Technology, Professor (80252162)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Takashi Shizuoka University, Graduate School of Science and Technology, Professor (90201201)
ISHIHARA Susumu Shizuoka University, Graduate School of Science and Technology, Associate Professor (10313925)
MINENO Hiroshi Shizuoka University, Faculty of Informatics, Assistant Professor (40359740)
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| Project Period (FY) |
2004 – 2007
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| Keywords | sensor network / ubiquitous network / mobile computing / personal area network / location information / wireless communication |
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| Research Abstract |
In this research, we studied mobile sensing networks that enabled us to develop various applications by using heterogeneous sensing data. We mainly focused on 4 issues to achieve the mobile sensing network, 1) an environmental sensing, 2) an effective communication, 3) an adaptive networking, 4) sensing applications. As an environmental sensing, we examined communication methods that increase the arrival rate in a mutual complementary network environment. These methods improve reliability by mutually complementing, through PLC (Power Line Communication) and ZigBee, the places where nodes can't communicate through only one interface. As an effective communication, we proposed a meta-data-based data aggregation scheme in clustering wireless sensor networks. In our scheme, only one of the sensor nodes within the sensing range of an event in a cluster head via the meta-data negotiation. The simulation results showed that the cluster protocol with our data aggregation scheme is effective in
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prolonging the network lifetime and supporting scalable data aggregation. As an adaptive networking, we proposed a remote Plug and Play where mobile terminals can remotely use devices for network-transparency. We developed prototype software and confirmed that remote Plug and Play was 100ms if it had an environment with enough band width and low latency. As sensing applications, we thought node localization obtained by estimating node positions is an essential technique for applications. We presented an optimized link state routing-based localization that satisfies the following key design requirements: (i) Independency from anchor nodes, (ii) Robustness for non-convex network topology, and (iii) Compatibility with network protocol. We revealed characteristics of MPR (multipoint relay) selection and the farthest 2-hop node selection, and found how these node selections contribute to reducing the distance error for a localization scheme without ranging devices. We think each research result can be converged as a mobile sensing network by developing gateways that form an overlay network. Although we couldn't develop such gateways within this research period, we believe each research result promotes the development of basic technologies in this area. Less
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