In the first part of this article, I described a basic analogy that exists between roads and wireless communications. In this part, I will explain the speed benefits and relevant innovations of 5G WiFi using this analogy.
The one obvious way to solve traffic clogs is to widen the roads. This allows more commuters to use it at any point in time. Bandwidth is like the width of the road. Increasing the bandwidth of the wireless medium allows more data to be sent. With 5G WiFi, the bandwidth can be increased up to 4x that of 802.11n Wi-Fi. This allows for optimal use of the unlicensed 5 GHz spectrum. Incidentally, 5 GHz is like a highway or expressway without traffic lights or “interference”. Unlike the 2.4 GHz, the 5 GHz link is not affected by Microwave, cordless phones or Bluetooth devices, thus enabling data to go through more reliably. You can get more information on the benefits of the 5 GHz here and here.
Another way to address the traffic issue is to mandate carpools and public transportation. This immediately allows more people to be transported for the same road-width. Modulation schemes serve a similar purpose. When a link uses higher modulation schemes, more data can be packed in the same bandwidth. 5G WiFi, in addition to increasing available bandwidth, has also incorporated the higher modulation scheme of 256-QAM for greater speeds. This higher modulation scheme allows us to transmit the same amount of data in lesser time.
Carpools help us conserve fuel and go-green by reducing the number of cars on the road for the same number of people! The more efficient data transfer, together with the higher bandwidth, allows us to save battery life of devices using 5G WiFi making it ideal for mobile computing and transfer of media content!
In summary, 5G WiFi’s innovations give us faster speeds and better battery life. In the concluding part of this series, I will describe the higher reliability offered by 5G WiFi using the same road analogy.