Wi-Fi networks will become severely stressed by the use of Wi-Fi networks in the neighbors’ residences, particularly as 4K streams and IoT (Internet-of-Things) communications increase as surely they will.
Wireline home networking technologies will use that to justify using their technologies as the home’s network backbone.
So says ASSIA chief Dr John Cioffi speaking last week at the Marconi Society’s Webinar on “Spectrum Choices”.
Neighborhood Wi-Fi speed drop
“Wi-Fi speeds can be expected to drop very significantly in neighborhoods and buildings where several Wi-Fi access points are in use with typical numbers of Wi-Fi-capable devices, namely the IoT today, and even more so into the future. Recent field tests of true throughputs in such crowded systems (using state of the art Wi-Fi access points and chips) often see speeds of just a few tens of Mbps, or even less.
Super crowded systems, such as the 50 million “digital divided” users in the USA who go to public libraries for free Internet connection, will see speeds of less than 1 Mbps at times because of heavy use during busy hours (4 pm to 8 pm at libraries).
Schools also can experience very low speeds from over-use, an issue to be addressed hopefully by recent E-rate allocations for public schools in the USA.”
We asked Dr Cioffi how the coming of 4K video streams will stress Wi-Fi networks. He said:
“As 4K content finds increasing distribution and use, it will stress all Internet connections. Typical 4K requires a very stable 15-30 Mbps bit stream over the entire period of viewing. Wi-Fi systems, particularly in urban and suburban environments where as many as a few to dozens of Wi-Fi access points’ transmissions overlap with collisions and contention, need significant management (such as ASSIA’s Cloudcheck Smartifi) to ensure good quality 4K viewing.
“Over-the-top 4K’s high bandwidth consumption also will stress all access networks where sharing of the physical connection is used (like PONs, cable-modem systems) or longer-line DSL’s that have insufficient bandwidth. Short-line DSLs at 50 Mbps to 1 Gbps, such as new vectored DSL or G.fast used in systems like [AT&T’s] GigaPower, should be OK if they also have stability management like that in ASSIA DSL Expresse. In short, Wi-Fi systems generally …
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