here’s what you can do about it:
Relocate your wireless router away from nearby routers, appliances and dense building materials.
Unplug the appliances and devices when not in use.
Avoid using too many wireless gadgets at the same time within close proximity of each other.
Try using different wireless frequency (5GHz vs. 2.4GHz) and/or a different wireless band.
Consider upgrading your wireless router or at the very least upgrading the firmware (newer technologies and configurations can avoid the susceptibility of earlier solutions).