The paper describes tests run to determine the effect of using bluetooth and wifi in near proximity like on various network cards nowadays. They found that when bluetooh is being used wifi effectiveness drops drastically though the converse is not nearly as notable for bluetooth. To solve this issue AHF was used to disable bluetooth on the bands that were being used for wifi on the same card but this doesn't solve all the issues. Use of AHF causes bluetooth and wifi to have 0 interference if the adapters are at a distance of 2m from each other. Various methods are being used to allow for full bandwidth use: the most common inter card communication to balance packets. Noncollaborative methods also exist which rely on sending smaller packets so less data need be resent if failure occurs. Another system which uses bit error rate spams data on channels and determines the one with the least interference to send data on. Other collaborative techniques simply kill one transmitter when another is in use much like a mutex on data sending between the cards.
If found the knowledge that bluetooth and wifi are running on nearly the same bandwith extremely interesting. I did not know that the technologies were so similar and the main difference between them is simply power consumption. Knowing more about the basis of what our project runs on has provided greater insight into what is possible and the limitations of our idea. It also explains some issues I noted when testing with different devices as the hop nodes: when a phone with wifi was used signal to the mobile node occurred much more quickly. I find the issue extremely interesting and note that the current setup is worlds better than it was 7 years ago.
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