Robust and energy-efficient data gathering in mobile wireless sensor networks

In Mobile Wireless Sensor Networks (MWSNs), nodes are supplemented with implicit or explicit mechanisms that enable these devices to move in space. Packet loss is one of the main challenges that occurs in such networks due to the mobility of the nodes or links failures and it comes in parallel with energy consumption. Many data gathering studies by considering energy-efficiency or reliability are done in MWSNs. However, these goals are generally orthogonal to each other. Apart from achieving proper energy consumption, data gatering approach proposed in this study also will ensure data delivery. In this paper, first, we propose a reliable forward routing mechanism to increase the rate of data delivery regarding the mobility of the nodes. Next, we propose an error recovery mechanism against link failures. On the other hand, by limiting a number of redundant and unnecessary responses from sensors,we have reduced the average energy consumption of the network. As a result, in the proposed data gathering approach, by utilization the aforementioned proposed mechanims, data packets are forwarded through the most reliable and energy-efficient paths and the lifetime of the whole network could be maximized. Streszczenie. W artykule przedstawiono niezawodny mechanizm routowania w celu zwiekszenie ilości dostarczania danych w systemach mobilnych czujnikow bezprzewodowych. Nastepnie opisano system odzyskiwania utraconych polączen. Dzieki osiągnietej redukcji powielanych odpowiedzi czujnikow, ograniczono średnie zuzycie mocy. Osiągniete rezultaty świadczą o efektywności proponowanego rozwiązania. (Energooszczedny system, o wysokiej odporności, do zbierania danych w sieciach mobilnych czujnikow bezprzewodowych).

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