An Interference Avoidance Method of Wireless Body Area Network Based on Chinese Medical Band

摘要

An interference avoidance mechanism for Chinese Wireless Body Area Network (WBAN) is proposed in thispaper. This mechanism firstly classifies the channels by priority based on the distribution characteristics of potentialinterference on the China medical band, commits energy detection on all channels in the network initialization phase,and compares to energy threshold to form available channel set. Then differentiated channel maintenance strategyis utilized to avoid interference as far as possible in network running phase. The scheme proposed in this thesis isproved to be superior by simulation from either the interference probability or packet loss rate. Apart from that, theinterference detection threshold that can satisfy the least communication demand is calculated for every Type B, Cchannel by simulation and convenient for referring to.