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Mobile P2P Databases

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Encyclopedia of GIS

Definition

A mobile peer-to-peer (P2P) database is a database that is stored in the peers of a mobile P2P network. The network is composed by a finite set of mobile peers that communicate with each other via short-range wireless protocols, such as IEEE 802.11, Bluetooth, Zigbee, or ultra wide band (UWB). These protocols provide broadband (typically tens of Mbps) but short-range (typically 10–100 meters) wireless communication. On each mobile peer there is a local database that stores and manages a collection of data items or reports. A report is a set of values sensed or entered by the user at a particular time, or otherwise obtained by a mobile peer. Often a report describes a physical resource, such as an available parking slot. All the local databases maintained by the mobile peers form the mobile P2P database. The peers communicate reports and queries to neighbors directly, and the reports and queries propagate by transitive multi-hop transmissions. Figure 1below illustrates the...

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Luo, Y., Wolfson, O. (2008). Mobile P2P Databases. In: Shekhar, S., Xiong, H. (eds) Encyclopedia of GIS. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35973-1_795

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