4.2 Mutual Impact of Wi-Fi and ZigBee on each other
The ZigBee delivery ratio for different number of Wi-Fi
nodes with fixed number of three ZigBee nodes is shown in
Fig. 3(a). The delivery ratio for ZigBee is affected highly
and the delivery reduced from 100% when no Wi-Fi exists
down to around 73% when 9 Wi-Fi nodes Present. The WiFi
delivery ratio for different number of Wi-Fi nodes with fixed
number of three ZigBee nodes is shown in figure 3(b). It
decreases on increasing the number of Wi-Fi nodes. It can
be observed in fig. 4(a) that the ZigBee average end to end
delay is not affected by increasing the number of Wi-Fi
nodes. However, the WiFi average end to end delay is