Artículo
Synchronization of multihop wireless sensor networks at the application layer
Autor/es | Marco Marco, Álvaro
Casas, Roberto Sevillano Ramos, José Luis Coarasa, Victorián Asensio, Ángel Obaidat, Mohammad S. |
Departamento | Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores |
Fecha de publicación | 2011 |
Fecha de depósito | 2020-03-04 |
Publicado en |
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Resumen | Time synchronization is a key issue in wireless
sensor networks; timestamping collected
data, tasks scheduling, and efficient communications
are just some applications. From all the
existing techniques to achieve ... Time synchronization is a key issue in wireless sensor networks; timestamping collected data, tasks scheduling, and efficient communications are just some applications. From all the existing techniques to achieve synchronization, those based on precisely time-stamping sync messages are the most accurate. However, working with standard protocols such as Bluetooth or ZigBee usually prevents the user from accessing lower layers and consequently reduces accuracy. A receiver-to-receiver schema improves timestamping performance because it eliminates the largest non-deterministic error at the sender’s side: the medium access time. Nevertheless, utilization of existing methods in multihop networks is not feasible since the amount of extra traffic required is excessive. In this article, we present a method that allows accurate synchronization of large multihop networks, working at the application layer while keeping the message exchange to a minimum. Through an extensive experimental study, we evaluate the protocol’s performance and discuss the factors that influence synchronization accuracy the most. |
Identificador del proyecto | TIN2006-15617-C03 |
Cita | Marco Marco, Á., Casas, R., Sevillano Ramos, J.L., Coarasa, V., Asensio, Á. y Obaidat, M.S. (2011). Synchronization of multihop wireless sensor networks at the application layer. IEEE Wireless Communications, 18 (1), 82-88. |
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