telemetry can be two-way communications. You can use serial communications over radios, USB WiFi and even USB 3G/4G modems. Many users have had success using network connections with gamepads for control but there will be more latency than using traditional RC radios.
Check out the following links for more info.
http://uavmatrix.com/Blog/38
Because I already did what U plan to do, need to tell you that unfortunately high-speed wifi link is only a dream, there is no possibility to do this.
My setup was
GCS - Airlive n.power (30dBm), Yagi antenna 18 dBi.
PLANE: RPi with Alfa 036 -unblocked, 33 dBm with 5 dBi omni antenna. The power for wifi card was taken from separate BEC,
Link /: telemetry and video simultaneously.
My attempts
[raspberry pi HD live stream first attempt fpv Poland]
And another one:
[…
Hi, very basic user here, need some help on connecting Mission Planner (Windows) to to my board. I manage to configure everything as per DOCs guideline but seems i cant connect to via Mission Planner (I can access via PUTTY). Error “The socket/serialproxy is closed” Thanks,
Robert