I try learning through youtube and other resources for example WiFi works on 2.4Ghz actually there are other 8 bands too (some other frequencies next/before 2.4Ghz) so different devices use those different bands/frequencies to communicate at same time, for sure on receiving end we have 8 listeners, listening on those 8 channels. But still looks like there is a lot hidden, for example around my home at least 24 wifi gateways are installed that i can see while looking for available networks, that makes sense that those are locked and have keys to communicate with on related devices but they have only those 8 channels to communicate then how come they all can communicate at same time, at my home only 5/6 devices are continuously working, how do they share those channels.
Other than wifi how do other RF modules (2.4Ghz, 433Mhz etc) can work simultaneously and avoid collision, I assume just like wifi they must have 8/12 channels to work, but when I see we have lots of devices working like security systems, door sensors and other monitoring sensors, how do they manage communication collisions.
Even if we look at LoRa, its gateway also have 8 channels to communicate with nodes, by reducing on air time we can manage time for other devices but how can we avoid collision if timer based devices accidently transmit at same time?
My question is not specific to wifi, I generally want to know if timer based receiver end has no control when to send data how can we avoid communication collisions or if there are some methods used, what are those?
Edit: updated spelling mistake
Other than wifi how do other RF modules (2.4Ghz, 433Mhz etc) can work simultaneously and avoid collision, I assume just like wifi they must have 8/12 channels to work, but when I see we have lots of devices working like security systems, door sensors and other monitoring sensors, how do they manage communication collisions.
Even if we look at LoRa, its gateway also have 8 channels to communicate with nodes, by reducing on air time we can manage time for other devices but how can we avoid collision if timer based devices accidently transmit at same time?
My question is not specific to wifi, I generally want to know if timer based receiver end has no control when to send data how can we avoid communication collisions or if there are some methods used, what are those?
Edit: updated spelling mistake
Last edited: