PHY
Physical Layer
Physical LayerIntroduced R99
Definition
Layer 1 of the radio protocol stack, responsible for modulation, coding, and mapping of transport channels onto physical resources.
Evolution Across Releases
- WCDMA-based in UMTS, OFDMA/SC-FDMA in LTE (Rel-8), and a flexible OFDM numerology with mmWave support in NR (Rel-15).