I would suggest you to conduct site survey first. Moreover Most wireless routers and wireless adapters that have external antennas come with cheap omnidirectional antennas (those that send the signals equally in all directions). Replacing those cheap omnidirectional models with higher-gain antennas (those that concentrate the signals in a specific direction) can help increase your Wi-Fi range, especially if you have a home or office that's narrow and extends predominantly in one direction from the router's location. If that's the case, consider purchasing any higher-gain antennas that the vendor recommends for your particular router and/or wireless adapters
