Wi-Fi Overhead Becoming an Issue?

Wi-Fi, the well-known standard for wireless internet, is reaching its technical limits in areas of high usage, a study suggests. Wi-Fi efficiency, measured as a percentage of theoretical ability to handle "bearer" traffic, compared to signaling overhead,  drops significantly in busy surroundings where many different networks and numerous wireless internet enabled devices are operating, the study suggests.

In some cases, the amount of bearer traffic that can be carried can drop to less than 20 percent.