Solving the problem of distributing WiFi to the 2nd floor

Something the router (adsl modem) has been lousy lately, but with the construction of the 2nd floor generally refused to distribute Wi-Fi there. Inet studied, but did not find anything intelligible. I decided to build a bi-square, try it. Took out a little over the wall (antenna cable length cm 70) screwed vertically! (this is the point) and it worked. Before that, I changed the antennas - it did not help. Maybe someone will come in handy. Threat removal of the antenna is not required. A vertical square gives out just the vertical)) the horizontal reception has worsened, but not critical.