NTN LEO 1200

NTN LEO 1200 template is sub-set of TR 38.821 Calibration template. It provides satellite constellation scenario in which satellites are orbiting at 1200 km altitude i.e. limiting selection of predefined calibration scenarios to scenarios where LEO 1200 satellite used. Some other configuration are also limited compared to TR 38.821 Calibration template. Template is implemented by the NTN simulator.

Essential pre-conditions

  • Constellation TLE file: oneweb.txt

  • Constellation Satellite: ONEWEB-0028

  • Simulation time is calculated relative to TLE epoch

  • Satellite orbit: LEO 1200

  • Predefined scenarios having the following properties
    (
    set per scenario by selected Calibration Case):

  • Parameter set

  • Central beam elevation angle

  • UE antenna type

  • Band type

  • Frequency reuse factor

  • Priority

  • Propagation delay

  • Numerology

Configurable options

  • Warm Up Time for statistics collection

  • Calibration Case selection: 11-15, 26-30

  • The number of the UEs per gNb

  • The number of the beams in scenario

  • Bandwidth [Hz]

  • Enabling wrap around interference

  • Wrap-around tiers count: 1-4

  • UEs per wrap-around beam

  • Channel condition: DYNAMIC, LOS or NLOS

  • NTN scenario: DenseUrban, Urban, Suburban or Rural

  • Enabling uplink

  • Traffic type for DL And UL: FULL_BUFFER or UDP

  • UDP traffic packet size and interval

  • Satellite mobility types: STATIONARY, DOPPLER or TLE

  • UE mobility types: STATIONARY or DOPPLER

  • Satellite position Latitude: -90 <= x <=90

  • Satellite position Longitude: -180 <= x <=180

  • Channel update interval

  • UE Doppler mobility speed [km/h]

  • Stationary UE placement radius [km]

  • HARQ:

    • Enabling/disabling

    • Max retransmission count: <=8

    • Process count: <=32

    • Enabling blind and dynamic blind HARQ

    • Blind retransmission count: <=8

  • Enabling PF scheduler instead of RR

  • Enabling FD scheduler instead of TDMA

  • Maximum UEs scheduled per slots

  • CQI CBS symbols count

  • Target BLER: 0-1

  • Enabling UL power control

  • Power control Alpha: 0-1

  • Power control P0 [dBm]