Deep Sleep mode of DWM 1001 with UART

I am working with DWM 1001 and ESP 8266. I am successful in transmitting the data to an MQTT broker. I want to go ahead further to test the deep sleep mode of DWM module. I am currently using the PANS 2 firmware. If someone can guide me on how I can enable the deep sleep- wake functionalities in periodic way using the same setup, It will save a lot of my time.

Thanks in advance