Some possible solutions might be ...
1) If the current WiFi router has detachable antennas, consider replacing them with higher gain antennas.
2) Adding a WiFi repeater at a location between the current wireless router and your room. For maximum speed you would need a true repeater that can transmit and receive at the same time, on two different channels. You would also need to find a suitable location that has strong signals to the router and to your room and has an AC outlet handy to power it.
1) If the current WiFi router has detachable antennas, consider replacing them with higher gain antennas.
2) Adding a WiFi repeater at a location between the current wireless router and your room. For maximum speed you would need a true repeater that can transmit and receive at the same time, on two different channels. You would also need to find a suitable location that has strong signals to the router and to your room and has an AC outlet handy to power it.