5G NR User Plane Latency

The definition of user plane latency as per 3GPP TR 38.913, is  “the time to successfully deliver an application layer packet/message from the radio protocol L2/L3 SDU entering point to […]

Hybrid Automatic Repeat Request (HARQ) in LTE FDD

HARQ stands for Hybrid Automatic Repeat Request. HARQ = ARQ + FEC (Forward Error Correction)/Soft Combining. ARQ refers to Automatic Repeat Request i.e. if sender doesn’t receive Acknowledgement (ACK) before timeout, the […]