Recently we switched to T Mobile home 5G for our home internet. I found the 'sweet spot' in the house for the 5G Gateway, which is unfortunately not centrally located in the house. I have a existing ASUS wifi router which is pretty decent. Signal from the gateway to the center of the house is good, but not so much from the gateway all the way to the other side of the house and garage. My question is, can I return the router to the central location and put it into repeater mode, but maintain a unique SSID for the router? Or do I have to use the SSID from the 5G gateway? Basically what I am wanting is for the router to catch the signal from the gateway, spread it through the house / garage, but let the router manage most of the traffic, not the gateway. TIA