Implementation of a Modified Wireless Sensor Network MAC Protocol for Critical Environments

Table 2

Simulation parameters.

Channel parameters
Maximum transmission power	100 mW
Saturation	−90 dBm (minimum signal attenuation threshold)
Alpha	3.0 (minimum path loss coefficient)
Carrier frequency	2.412 GHz
Physical layer parameters
Thermal noise	−77 dBm
Sensitivity	−90 dBm
Maximum transmission power	100 mW
Physical header length	0 bit
MAC layer parameters
Transmission power	100 mW
Bitrate	15360 bit/sec
CCA detection time	0.0005 s
Unit backoff period	40 ms
Backoff method	exponential
MAC header length	24 bits
Ack packet length	40 bits
Ack wait duration (Ack timeout)	10 ms
Neighbour-Ack wait duration (neighbour-Ack timeout)	13 ms
SIFS time	192 µs
Network layer parameters
Network header length	32 bits
Application layer parameters
Application header length	512 bits