  For some applications, we need to deploy a network of sensors in working
field to sense the environment and send collected data to a base station for
processing; these sensors depend on non-rechargeable batteries, so the routing
protocols for such network of sensors need to be efficient. LEACH is one of
these protocols which is a hierarchical routing protocol and helps in saving
energy in wireless sensor networks. Enhanced LEACH depends on a mathematical
model to calculate the estimated average energy in each round. consequently,
utilizing the node remaining energy to ensure rotating cluster head role over
all the nodes. It also depends on a mathematical model to calculate base
station distance from work field whereas LEACH does not take into its account
any consideration for remaining energy of node. In this paper, we enhance LEACH
(work efficiency in homogeneous networks) to adapt with base-station distance,
thus more energy saving for certain distances from base-station. The obtained
simulation results show that enhanced LEACH saves energy better than LEACH and
increase network stability and reliability when base-station is inside working
field and consume the same energy as LEACH when base-station is outside work
field.
