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.

PHICH - Physical Hybrid ARQ Indicator Channel

The E-UTRA PHICH (Physical Hybrid ARQ Indicator Channel) carries HARQ (Hybrid ARQ) ACK/NAK’s and is transmitted in terms of PHICH groups. A PHICH group consists of up to eight ACK/NACK processes and one PHICH group uses three REG s.


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

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