School of Specs 38.300v19.3.0

3GPP 38.300 v19.3.0 — the document's own text

5.3.5.1 Link adaptation

Taught in 2. The six working groups and the line between them (TSG RAN — the group that specifies the radio, overview), 2. The six groups, and what each one worries about (TSG RAN — the group that specifies the radio, quick start).

Four types of link adaptation are supported as follows:

  • Adaptive transmission bandwidth;
  • Adaptive transmission duration;
  • Transmission power control;
  • Adaptive modulation and channel coding rate.

For channel state estimation purposes, the UE may be configured to transmit SRS that the gNB may use to estimate the uplink channel state and use the estimate in link adaptation.