Wifi Booster Antenna

Hi, I Have Situation Here Where My Laptop And The Wifi Router Are Separated With Walls And Cause The Connection To Fail. I Am Thinking Of Replacing The Wireless Router's Antenna With An Antenna Booster, Probably 10dBi. I Believe This Antenna Will Be Able To Penetrate The Signal Through The Walls To My Laptop. But I Doubt That, Will This Antenna Be Able To Receiver The Returning Signal From My Laptop, If I Don't Do Any Upgrade To My Laptop?