What to do when camera signal is weak?

What to do when wifi signal of camera is weak and poor? 

There are 3 ways you can try: 

A:  Wifi Repeater in the NVR setting 

1. Right click on NVR screen and choose "Video Manage"
2. Click "Wifi Repeater"
3. Find the one with strongest signal bar and the one with the weakest.
4. Click + behind the channel with strongest signal and add the channel with weakest.
5. Click OK to save it. 

B: Use a Wifi Extension Cable 

C: Use a Wifi Router Repeater