Concentration transmission mode poses larger burden on the nodes near sink node in wireless sensor networks

so these nodes are prone to running out of energy early with decreased network lifetime.To deal with the problem

analyze the typical source routing strategies in square lattice topology structure based on symmetry and predictability of regular topological structure

calculate load of bottleneck node and data transmission delay of each strategy

propose calculation model for energy consumption

and discuss energy consumption for communication

standing-by and totality of network node.Numerical analysis shows that balance forwarding strategy leads to minimal overall energy consumption.