4G (LTE) Telemetry and Control of Pixhawk using Pi3

I have been developing the solution for 4G / LTE telemetry and control link for Pixhawk using raspberry pi3. Problems: - most solutions have high CPU usage / high latency / or use 3G network at most (sakis3g and Wvdial do NOT support 4G)! - There are almost no solutions for restricted Cell provider (when ports are closed) on both ends (on Raspberry modem and Computer LTE Modem) Results: - I have archived latency of 70ms on average and 100ms at most on 3G (4G drops it down to 33ms average) - VNC / ssh