Overview of L1 functions( Physical Layer)

Overview of L1 functions( Physical Layer)

5G courses

The physical layer is expected to perform the following functions to provide the data transport service

  • Error detection on the transport channel and indication to higher layers;
  • FEC encoding/decoding of the transport channel;
  • Hybrid ARQ soft-combining;
  • Rate matching of the coded transport channel to physical channels;
  • Mapping of the coded transport channel onto physical channels;
  • Power weighting of physical channels;
  • Modulation and demodulation of physical channels;
  • Frequency and time synchronization;
  • Radio characteristics measurements and indication to higher layers;
  • Multiple Input Multiple Output (MIMO) antenna processing;
  • RF processing

The physical layer offers data transport services to higher layers. Access to these services is through the use of transport channels via the MAC sub-layer. A transport block is defined as the data delivered by MAC layer to the physical layer and vice versa.

reference 38.201 , 4.2

Comments

  • NIRAJ KUMAR TIWARY
    July 28, 2020

    Sir I am interested this job

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