A method for avoiding conflicts between wifi and zigbee nodes in wireless body area network
A wireless body area network and conflict avoidance technology, applied in the field of communication networks, can solve problems such as increasing cost and energy consumption, and achieve the effect of saving energy consumption and monitoring data in real time
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[0031] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0032] like figure 1 As shown, the present invention provides a method for avoiding conflicts between WiFi and ZigBee nodes in a wireless body area network, comprising the following steps:
[0033] 1) Model the transmission channel state of ZigBee and WiFi through invisible Markov model;
[0034] Specifically, according to the hidden Markov model, the listable state space is modeled on the discretized time parameter space. When performing channel conflict analysis, the channel conflict sequence is first divided into many different types of channel conflicts (there may be overlaps), and feature extraction is performed on each conflicting or non-conflicting signal, thus obtaining a one-dimensional feature vector sequence o =o 1 o 2 o 3 ...o T . It is considered that each eigenvector is a random vector satisfying a certain probability distribution, and this rando...
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