Co-existence of ZigBee, Wi-Fi and Bluetooth

bluetooth zigbee coexistence

Does anyone have any information regarding the co-existence of the three standards? ne doing ne related topics...??

wifi zigbee coexistence

I will say something about wi-fi and BT only, since I am not informed on zigbee.
Wi-fi and BT do operate at the same frequency band so it is obvious they make interference to each other during transmitting/receiving. Actually, wi-fi packets are larger in frequency than BT ones, and they keep the channel busy for a longer time as weel: therefore, wi-fi transmission is in general more damaged than BT.
Since a few years, it is trying to develope a coexistence mechanism between BT and wi-fi and currently some of those mechanisms are recognized and recommended by IEEE. You can distinguish cooperative from not-cooperative mechanisms, coexistence mecanisms which work at driver or MAC level, and finally some hardware modifications can be reccomended to get the best performance. The simplest stratagem could be to place BT and wi-fi antennas as far as possible from each other, in case they are on the same device. But the best is to use some specific chipset which is able to implement BT and wi-fi protocols with some built-in coexistence mechanism. Some chipsets come with hw connections between BT and wi-fi parts, so coexistence mechanism (e.g. AFH) can take place at the best way. Those chipset are provided by a lot of electronics companies today. See to ST, TI or others' datasheet...


Nicola

zigbee bluetooth coexistence

Bluetooth works on Frequency Hopping Spread Spectrum techniques....