Covid 19 Update: Given the current global situation, we have paused the delivery of our LiveOnsite courses, but our LiveOnline and OnlineAnytime Packages remain unaffected. Browse over 50 online courses in our course catalogue, or get in touch to register your interest in future LiveOnsite courses when we are able to safely resume in person training.

USF - Uplink State Flag

The Uplink State Flag is used on PDCH (Packet Data Channel) to allow multiplexing of radio blocks from a number of GPRS mobiles. USF is used in dynamic and extended dynamic medium access modes. The USF comprises 3bits at the beginning of each Radio Block that is sent on the downlink. It enables the coding of eight different USF states which are used to multiplex the uplink traffic.

NetX

  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

Explore NetX today with a
free trial.
More Info about NetX