An Efficient Tree-Based Scheme for Geocast Protocol in Heterogeneous Wireless Sensor Network
نویسندگان
چکیده
-Geocast is a variation of traditional multicast. It realized the forwarding of messages from source node to the nodes residing at specified geographic areas often referred to as a Geocast region. This paper describes a new scenario of Geocast protocol in which a source node locating outside the mobile ad hoc network sends packets to all sensor nodes within a specified geographical region in order to gather monitoring data from sensor nodes within the region. Consequently, a new Geocast protocol is put forward to improve the current Geocast protocols by supporting this heterogeneous network environment. Our protocol attains energy efficiency and accuracy through the use of an treebased routing algorithm in Geocast region. Meanwhile, by using dynamic hello-message frequency and link lifetime evaluation, our method ensures the stability of route from the source node to Geocast region. Keywords--Geocast;hello-message;link-lifetime;multicast tree; BIP
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