Q: repeatedly disconnecting WIFI signal

Hello,

4 weeks ago i just bought a new MacBook Pro with retina (having OS X Yoesmite version 10.10.3). I haven't installed yet any new sw, any file and made any change (i did just software update of OS) and since the first start i have a serious problems with internet connections.

All my PC's incuding MacBook Pro are connected to router Tp link TL-WR340GD. I have checked out the delay from my MacBook to router by using a command in terminal (ping ip..).

The response is following....My internet is working fine half of the time and another half not working, having "request timeout / no route to host". This status is changing on avg every minute and randomly. All of this happening when i am physically 5 metres in the next room, through 1 wall..

Interesting findings is that more closer i am to my router the "disconnections" are more rarer.

When i am sitting with MacBook 1-2 metres from my router my internet is working fine but still have short 15 sec disconnection to way to router after each 5 mins.

For more info:

I connect to router with my phone and other non-apple notebook and everything is 100% fine without any small disconnection ("request timeout / no route to host") even when i am 10 metres from the router....From this i assume there is no doubt that the problem is on MacBook's side.

We can see on interent thousands guides how to solve wifi connection problems for MacBooks. Just already tried several of them and nothing changed...thats the reason why i am here..

Thanks so much for your opinions guys

Regards

Peter