Basically what I intend to do is to use this particular method for transferring files between these devices and Ubuntu/Windows laptops. But I don’t know how. Could you help me? Thanks.
I use File Expert for all of my connection needs. It even has WiFi Direct support besides Web sharing, ftp, samba etc...
Hello, another possibility for you is something like Tonido:
I would say your best chance would be with connectify.
You can also install an SSH or ftp server on the phone and then use Nautilus with ssh://ip-or-name-of-your-phone/ or ftp://ip-or-name-of-your-phone/ URLs.
AirDroid is a free app that lets you wirelessly manage your Android from your favorite browser of Windows/Mac/Linux computer or other devices.
How to Transfer Files Between Your PC and Android Phone Wirelessly
Use Connectify Hotspot, they have a free Lite and a Pro version. Check at http://www.connectify.me/hotspot/
Look at Connectify, VirtualRouter, Winhotspot and/or AndroidWifi.