TITLE:
A Chain-Based Routing Protocol to Maximize the Lifetime of Wireless Sensor Networks
AUTHORS:
Mourad Hadjila, Hervé Guyennet, Mohammed Feham
KEYWORDS:
Wireless Sensor Networks; Chain; Energy Conservation; Lifetime
JOURNAL NAME:
Wireless Sensor Network,
Vol.5 No.5,
May
24,
2013
ABSTRACT:
Energy conservation is a key issue in the design of systems based on
wireless sensor networks. Clustering routing protocols have been
developed in order to reduce the network traffic toward the sink and therefore
prolong the network lifetime. An alternative of clustering is to build chains
instead of clusters. In this context, we propose a routing protocol for
Wireless Sensor Networks (WSN). It is based on constructing multiple chains in
the direction of the sink. The first node of each chain sends data to the
closest node in the same chain. This latter collects, aggregates and transmits
data to the next closest node. This process repeats until reaching the last
node, which aggregates and transmits data directly to the sink. An improvement
of this approach is proposed. It works as follows: In addition to forming
multiple chains as previously, it constructs a main chain, which includes
leader node of each chain. Since, initially all main chain nodes have the same
amount of power, the nearest node to the sink aggregates data from others then
transmits it to the sink. In the next transmission, main chain node having the
higher residual energy performs this task. Compared with the first approach,
simulation results show that improvement approach consumes less energy and
effectively extends the network lifetime.