To the best of my knowledge, the cost associated with a wireless link following the ZigBee standard is calculated using the below formula.
C(l)= min(7, round(1/p(l)4) )
where p(l) is probability of successful packet delivery over the wireless link l.
The paper "Wireless Sensor Network With Perpetual Motes for Terrestrial Snail Activity Monitoring (http://ieeexplore.ieee.org/abstract/document/7954581/)" calculates it using the below formula.
p(l) = 1 - ((0.8/radio range) * distance between two nodes + rand (-0.1, 0.1))
Is it a correct way to obtain p(l) ?
Otherwise, how to obtain the probability of successful packet delivery (p(l) ) in the simulations?
Any help is highly appreciated. Thank you in advance.
The formulas you mention seem to be heuristics and cannot be generally applied to all cases.
You can run simulations and take the ratio of packets successfully received at destination to total packets transmitted
@Luay Abdulwhid: Sir, Please answer my question.
@Shubham Gupta: I am doing simulations using Matlab, how can I know whether a packet is successfully received or not?
@amar - MATLAB wouldn't be able to provide that details. It's available as direct output of simulation if you use a standard network simulator like NetSim or OPNET.
It depends on the probability distribution or randomness of signal strength of the packets which is caused by medium of propagation. It also depends on the Signal to noise ratio (SNR). For high SNR, the minimum signal strength should be high.
I think you may try the normrnd(mu,sigma) function to generate a random variable with normal probability distribution and add this to your generated signal strength of packets. Then you may consider a minimum SNR below which the packet will not be considered as delivered. Thanks
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