(Redirected) dell xps 13 wifi problem

Hello all. I have just bought Dell XPS 13 9343 and its wifi is giving me problem. After every few minutes wifi disconnects automatically at its own. I have done troubleshooting via dell website after entering my service code but nothing abnormal was detected. My device manager shows BROADCOM 802.11AC network adapter while on dell website DELL WIRELESS 1560 WIFI DRIVER is shown. Please help me resolving the problem of wifi disconnect. thanks