The Physical layer specifications of 5G-NR is spread across six Specification document and one general description document;
The relation between Multiple PHY Layer specifications is illustrated below.
TS 38.201: Physical layer; General description
The scope of the document is to describe:
- – The contents of the Layer 1 documents (TS 38.200 series);
- – Brief overview of contents of all PHY Specifications
TS 38.202: Physical layer services provided by the physical layer
The scope is this document is to describe the services provided by the physical layer, and to specify:
- – Services and functions of the physical layer;
- – Model of physical layer of the UE;
- – Parallel transmission of simultaneous physical channels and SRS;
- – Measurements provided by the physical layer
TS 38.211: Physical channels and modulation
The scope is to establish the characteristics of the Layer-1 physical channels, generation of physical layer signals and modulation, and to specify:
- – Definition of the uplink and downlink physical channels;
- – Frame structure and physical resources;
- – Modulation mapping (BPSK, QPSK, etc);
- – OFDM signal generation;
- – Scrambling, modulation and upconversion;
- – Layer mapping and precoding;
- – Physical shared channel in uplink and downlink;
- – Reference signal in uplink and downlink;
- – Physical random access channel;
- – Primary and secondary synchronization signals
TS 38.212: Multiplexing and channel coding
The scope is to describe the transport channel and control channel data processing, including multiplexing, channel coding and interleaving, and to specify:
- – Channel coding schemes;
- – Rate matching;
- – Uplink transport channels and control information;
- – Downlink transport channels and control information.
TS 38.213: Physical layer procedures for control
The scope is to establish the characteristics of the physical layer procedures for control, and to specify:
- – Synchronization procedures;
- – Uplink power control;
- – Random access procedure;
- – UE procedure for reporting control information;
- – UE procedure for receiving control information.
TS 38.214: Physical layer procedures for data
The scope is to establish the characteristics of the physical layer procedures for data, and to specify:
- – Power control;
- – Physical downlink shared channel related procedures;
- – Physical uplink shared channel related procedure.
38.215: Physical layer measurements
The scope is to establish the characteristics of the physical layer measurements, and to specify:
- – Control of UE/NG-RAN measurements;
- – Measurement capabilities for NR
3GPP has also specified the Mathematical notations that have been used across all the Phy Layer specifications.