Options for wireless packet captures in Windows January 23, 2019
In Windows, you cannot effectively analyze wireless frames, because you are unable to put the wireless NIC in "RF Monitor Mode" - that is the mode in which the wireless NIC can see ALL 802.11 frames in the air, not just ones intended for itself.
Historically, it's been an expensive proposition. There are some great tools out there like OmniPeek (which I use), the gold standard for Windows packet analysis. And for years, AirPcap Nx was the main NIC folks used for pcap'ing WLANs with Wireshark. Unfortunately, both options are pricey. And the AirPcap NX is no longer manufactured. You’d be lucky to find a used one on eBay. Linux and MacOS have been the only ways to cheaply get access to RF Monitor mode without spendy software and hardware, like Omnipeek and the AirPcap Nx.
But, not everyone uses Linux, or macOS. Fortunately, and fairly recently, there are more and more ways to get RF Monitor mode in Windows. Here are some relatively inexpensiveoptions (NOT an exhaustive list) to perform an RF Monitor Mode wireless packet capture in Windows using relatively inexpensive hardware. Here's a list from least to most expensive.
Wireless roaming for Apple & Samsung devices January 23, 2019
Knowing is half the battle. Understanding how your devices make decisions helps you determine design requirements to build better WLANs. Here’s documentation on how Apple and Samsung devices make roaming decisions.
MacOS & IOS Wireless Roaming For Enterprise
Apple was kind enough to provide this information for iOS.