Patent application state of wireless sensor networks（ WSNs） is introduced

various technology branches and typical patent technologies of WSNs for energy saving are tidied up based on patent applications in form of network hierarchical model

patent technologies for saving energy aiming at data transmission are described especially

and a branch diagram of patent technologies for energy saving is drawn

thereby provide helps to person skilled in the art for learning background technology entirely

understanding technical essential

and discerning patent technology developing trend by using the technology survey.