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Chips, Glorious Wi-Fi 6E Chips!

Qualcomm, owners of the Atheros line of Wi-Fi radios, recently announced the availability of Wi-Fi 6E chips. Game onnnnnnn! 6 GHz Wi-Fi is here. Sort of... Qualcomm is selling Wi-Fi 6E (802.11ax w/ 6 GHz support) chips, but we don't yet know when enterprise-grade APs and mobile devices will begin supporting 6 GHz Wi-Fi. Chip-to-product timelines can vary. Wi-Fi 5 (802.11ac) saw enterprise WLAN vendors sell products only a few months after chip announcements. Wi-Fi 6 (802.11ax) saw the big vendors wait a year or more before introducing new AP models. A ton of concerns factor into a vendor's decision on when to develop, manufacture and market new AP technology. Vendors with small market share may be extra eager. Aerohive tried to boost their enterprise Wi-Fi profile by being a leader in Wi-Fi 6. On the other hand, some vendors' enthusiasm for new Wi-Fi hardware may be dulled by competing organizational initiatives. Aruba/HPE, for example, was veering f...
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At Least They Didn't Blame the Wi-Fi

Prime Video's stream of the 49ers-Cardinals NFL game received plenty of bad reviews on social media. While most of the negativity focused on stream quality, Wi-Fi largely escaped blame. There is one application type that confounds networks above all others, and it is live video. Pick your poison: voice, location tracking, on-demand video, cloud-hosted apps... None of them cause problems as consistently or predictably as the livestream. The issue is a simple one: broadcast vs. two-way. Packetized data networks are a two-way communication medium. Receiver must acknowledge sender. Live video has, since its inception decades ago, been a broadcast technology. Your television doesn't send anything to the local broadcast tower. Same with cable boxes. Same with satellite dishes. Pushing against this immutable scientific fact is commerce. Sports leagues see the billions of dollars being spent by streaming services, and they want some. Streaming services see the millions of eyeballs tun...
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Go To Sleep, Go To Sleep, Go To Sleep Little iPhone

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In some circles, Apple Wi-Fi devices are knows to have problems with lost connections.  iPhones and iPads will unexpectedly miss incoming calls, have delays in receiving push notifications and even be forced to reauthenticate. There is a solution to Apple devices' connection problems, and as with most "device problems", the fix resides on the infrastructure.  The DTIM setting needs to be increased.  ( Apple recommends a setting of 3 or higher .)  Here's why: Some Apple Wi-Fi connection problems stem from Apple iOS devices' use of 802.11 power management.  To understand what Apple devices are doing with power management, one must first understand how 802.11 power management works. Let's start with unicast data.  The 802.11 standard allows devices' Wi-Fi radios to enter the Doze state in order to conserve battery life.  Wi-Fi radios in the Doze state are unable to receive data from the AP, so APs buffer all unicast data that has a destination MAC ...
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