ISSN : 1796-2056
Volume : 2    Issue : 5    Date : September 2007

The Effect of Physical Topology on Wireless Sensor Network Lifetime
Debdhanit Yupho and Joseph Kabara
Page(s): 14-23
Full Text:
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Wireless sensor networks must measure environmental conditions, such as temperature, over
extended periods and therefore require a long system lifetime. The design of long lifetime networks
in turn requires efficient sensor node circuits, algorithms, and protocols. Protocols such as GSP
(Gossip-based Sleep Protocol) have been shown to mitigate energy consumption in idle listening
and receiving, by turning off the receiver circuit. However, previous studies of network lifetime have
been based on physical topologies in which nodes were placed on a square grid or randomly
distributed throughout the service area. This paper shows that the lifetime of a sensor network
depends on the physical topology of the sensor nodes. The lifetime of a sensor network varies as a
function of both the size of the network and the transmission range of individual nodes.

Index Terms
wireless sensor network, energy efficiency, routing protocol, grid topology