I would first start with looking at your frequency use. If you have a android phone there are many free WiFi viewing apps (I run 4 different ones because each looks at different things). Get near your headphone base and see the frequency band it is running on. I would expect that it defaults to 1, 6, or 11. I would then guess that your WiFi is on the same channel right now.
Once you have this knowledge you can enact the advice already given by GabrielaGarcia. Change to a 5 GHz channel (or get a new router with both 2.4GHz and 5 GHz channels), or if you must stay at 2.4 GHz set you router to the channel furthest away from the channel your headphone base. Also separation of the two radio sources is beneficial, but will not help when you are much closer to the headphone base station.
Last, you may have your router running on a lower power setting. If so you can set it to broadcast at it highest setting (usually 100 mW at 2.4 GHz). This may also be a setting on your laptop, but turning it up will drain the battery faster.
I would recommend use of the 5 GHz band if possible as it will give you the best possible speed but it does require your laptop to have a 5 GHz receiver and older laptops do not.