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Using formula (1) to calculate the number of hops of path i.
In formula 2 ,Assuming that there are d packets waiting to be sent during a transmission from S to D. The packets sent each path are .
The residual energy of the i-th path is defined as follows 3 ,4
The path selection factor is defined as 5
We defined a path selection factor and proved that this model conforms to the path selection model of the finite Markov chain, as shown in equations 6,7
the probability of choosing the j-th path as 8
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