@article {IOPORT.05537966, author = {Chen, Yuh-Shyan and Ann, Shin-Yi and Lin, Yun-Wei}, title = {VE-mobicast: a variant-egg-based mobicast routing protocol for sensornets.}, year = {2008}, journal = {Wireless Networks}, volume = {14}, number = {2}, issn = {1022-0038}, pages = {199-218}, publisher = {Springer, Dordrecht}, doi = {10.1007/s11276-006-9957-9}, abstract = {Summary: In this paper, we present a new ``spatiotemporal multicast'', called a ``mobicast'', protocol for supporting applications which require spatiotemporal coordination in sensornets. The spatiotemporal character of a mobicast is to forward a mobicast message to all sensor nodes that will be present at time $t$ in some geographic zone (called the forwarding zone) $Z$, where both the location and shape of the forwarding zone are a function of time over some interval $(t _{start },t _{end })$. The mobicast is constructed of a series of forwarding zones over different intervals $(t _{start },t _{end })$, and only sensor nodes located in the forwarding zone in the time interval $(t _{start },t _{end })$ should be awake in order to save power and extend the network lifetime. Existing protocols for a spatiotemporal variant of a multicast system were designed to support a forwarding zone that moves at a constant velocity, $\overrightarrow{v}$, in sensornets. To consider the path of a mobile entity which includes turns, this work mainly develops a new mobicast routing protocol, called the variant-egg-based mobicast (VE-mobicast) routing protocol, by utilizing the adaptive variant-egg shape of the forwarding zone to achieve high predictive accuracy. To illustrate the performance achievement, a mathematical analysis is conducted and simulation results are examined.}, identifier = {05537966}, }