%0 Journal Article %T Directed Cooperation in Multihop Wireless Sensors Network %A Jan Nikodem %A Ryszard Klempous %A Maciej Nikodem %A Marek Woda %A Zenon Chaczko %J International Journal of Electronics and Telecommunications %D 2010 %I %R 10.2478/v10177-010-0001-8 %X This paper proposes a relational abstraction for Wireless Sensors Network where node can identify its neighbors around it. Because of limited radio link range only some of nodes have a direct contact with the base station and transmission is carried out in a multihop way so information is send from one node to another towards the BS. We propose a relation ¦Ð that represents cooperation between nodes and takes advantages of topological properties of the network. Based on the hop-distance from the BS any node k can determine a set N<(k) that consists of nodes to which/ k should send messages in order to retain a data-flow direction towards the BS. %K Wireless sensors network %K directed cooperation %K relations %U http://versita.metapress.com/content/c714012252551026/?p=53ad911483d7453a9aee5a84d9caafec&pi=0