The invention relates to a fractional-bunch
energy balance route defining method for a binary-tree-based
wireless sensor network. The method adopts a binary-
tree structure in a
data structure and the backward sequence
traverse of the binary-
tree structure, and combines the
energy balance mechanism of a sensing-network
nodal point to provide the
route defining method. During the fractional-bunch network-organized procedure of a
wireless sensing network, the
energy consumption of the
nodal points of the integral
wireless sensor network is effectively reduced and balanced, and the existence period of the integral network is prolonged. In the
route building stage, according to the
energy balance mechanism and the previous circumstance of the
nodal point, the probability that the nodal point which has a bigger surplus energy and a less elected times becomes a bunch head is greatly increased, in the T D M A time
interval distribution, when a multi-jump communication is made inside the bunch, the member nodal points successively join the bunch head according to the
signal intensity, the bunch head builds the binary-tree according to the sequence of the arriving time, and distributes the
operation time interval for every nodal point according to the backward sequence
traverse of the binary-tree, the minimum communication distance is realized, the
energy consumption of the nodal points which have a relevant long distance to the bunch head is effectively reduced. The method of the invention is simpler, and is easy to be realized, thereby being suitable for various application occasions for the
wireless sensor network with data as the center.