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5G NR

NetSim is the industry's leading 5G NR simulation tool used by 400+ organizations across 25+ countries.

Our customers include:

  • Mobile network operators (MNOs) or Cellular service providers (CSPs)
    • Leverage off-the-shelf models and analysis tools provided with NetSim to investigate Network Capacity, Peak throughputs, End-to-end latencies, etc.
  • Equipment manufacturers
    • Test technology and network designs before production
    • Generate synthetic data to train AI/ML models
  • Universities and Research institutions
    • Accelerate R & D
    • Write your own algorithms by modifying NetSim source codes

NetSim supports the latest advances in 5G including MIMO, Beamforming, mmWave Propagation, SA/NSA modes and comes with a range of inbuilt example scenarios.

Check out NetSim Emulator to understand how NetSim Simulator can be connected to real devices running live applications.

NetSim’s 5G NR Design Window

Overview

  • End-to-End simulation of 5G networks
  • Devices: UE, gNB, 5G Core devices (SMF, AMF, UPF), Router, Switch, Server
  • GUI based with Drag and Drop, Packet Animator and Results Dashboard
  • 5G library interfaces with NetSim's proprietary TCP/IP stack providing simulation capability across all layers of the network stack
  • Discrete Event Simulation (DES) with event level debugging to inspect and control the simulation
  • Application Models - FTP, HTTP, Voice, Video, Email, DB, Custom and more
  • Packet level simulation with detailed packet trace, event trace and NR log file
  • SA and NSA architectures based on 3GPP standards
  • Protocol source C code shipped along with (standard / pro versions)
NetSim Results Dashboard and Plots Window

Devices in NetSim 5G NR Library

  • UE
  • gNBs
  • 5G Core: AMF, SMF, UPF
  • Buildings to differentiate between outdoor and indoor propagation

Specifications

  • 5G Core (Based on TS23.501, TS23.502) functions and interfaces:
    • Interfaces: N1/N2, N3, N4, N6, N11, XN
  • 5G NSA deployment architecture (in addition to existing SA mode) for LTE - 5G dual connectivity, to leverage existing LTE RAN/EPC deployments.
    • Option 3 where only LTE core/ EPC is present and no 5G Core devices are present. Here, eNB is the Master Cell and gNB is the Secondary Cell.
      • Option 3: Only eNB connects to EPC and eNB and gNB connects to the XN interface.
      • Option 3a: Both eNB and gNB connects to the EPC. No XN interface.
      • Option 3x: Both eNB and gNB connects to the EPC. eNB and gNB connects to the XN interface.
    • Option 4 where only 5G Core devices are present, and EPC is not available. Here, gNB is the Master Cell and eNB is the Secondary Cell.
      • Option 4: Only gNB connects to all the 5G Core interfaces. eNB connects to the XN interface.
      • Option 4a: gNB connects to all 5G Core interfaces and eNB connects to AMF and UPF through respective interfaces.
    • Option 7 where only 5G Core devices are present, and EPC is not available. Here, eNB is the Master Cell and gNB is the Secondary Cell.
      • Option 7: eNB connects to all 5G Core interfaces. gNB connects only to the XN interface.
      • Option 7a: gNB connects to all the 5G Core interfaces. eNB connects to AMF and UPF through the respective interfaces.
      • Option 7x: gNB and eNB connects to all the 5G Core interfaces.
  • RLC based on specification 38.322
    • TM (Transparent Mode): No RLC Header, Buffering at Tx only, No Segmentation/Reassembly, No feedback (i.e, No ACK/NACK)
    • UM (Unacknowledge Mode): RLC Header, Buffering at both Tx and Rx, Segmentation/Reassembly, No feedback (i.e, No ACK/NACK)
    • Transfer of upper layer PDUs
    • Segmentation and reassembly of RLC Service Data Units (SDU)
    • RLC SDU discard
    • RLC buffer
    • t-reassembly
    • ARQ
    • t-pollRetransmit
    • Protocol Data Unit (PDU)
    • TMD PDU
    • UMD PDU
  • PDCP based on specification 38.323
    • Transmit PDCP SDU
    • PDCP Association
    • Maintenance of PDCP sequence numbers
    • Discard Timer
    • Transmission Buffer
    • PDCP Entity
    • t-Reordering Timer
    • Receive buffer
  • MAC Layer based on specification 38.321
    • Mapping between logical channels and transport channels
    • Multiplexing/De-multiplexing of MAC SDUs from one or different logical channels onto transport blocks (TB) to be delivered to the physical layer on transport channels
    • MAC Scheduler featuring Round Robin, Proportional Fair, Max Throughput and Strictly fair algorithms
    • Link Adaptation to change MCS based on CQI
  • PHY Layer
    • Flexible sub-carrier spacing in the NR frame structure using multiple numerologies.
      • FR1 numerology µ = 0, 1, 2
      • FR2 numerology µ = 2, 3
    • All FR1 and FR2 operating Bands in both TDD and FDD
    • Carrier aggregation: Intra-band and Inter-band
    • Radio measurements:
      • SNR, RSSI, Pathloss, ShadowFading Loss, BeamformingGain
      • CQI, MCS
      NetSim 5G Data Files
    • Uplink and downlink physical channel
    • Frame structure and physical resources
    • MIMO
      • gNB antenna count supported 1, 2, 4, 8, 16, 32, 64, 128
      • UE antenna count supported 1, 2, 4, 8, 16
    • MIMO Spatial channel model
      • MIMO Spatial Channel Model (SCM), i.e., the channel is represented by a matrix H, whose entry (t, r) models the channel between the t-th and the r-th antenna elements at the transmitter and the receiver, respectively
      • Gaussian channel with Rayleigh fast fading: i.i.d Complex Normal (0, 1) channel (H-matrix) that changes independently every coherence time.
      • Beamforming gain per the Eigen values of the Gram (Wishart) matrix
    • Ability to input per gNB pathloss files from 3rd party software tools like MATLAB
    • PHY layer modulations supported
      • BPSK
      • QPSK
      • 16QAM
      • 64QAM
      • 256QAM
  • RF propagation
    • mm-Wave Propagation models (Based on 3GPPTR38.900 Channel Model)
      • Environment
        • Rural Macrocell
        • Urban Macrocell
        • Urban Microcell
        • Indoor Office – Mixed office, Open office
      • UE Position
        • Indoor
        • Outdoor
      • LOS State
        • LOS (Line of Sight)
        • NLOS (Non-Line of Sight)
      • Outdoor to indoor model
        • Highloss Model
        • Low Loss model

Featured Examples

3GPP Use case: Latency and throughput analysis for a dense urban transport scenario involving 50 mobile UEs experiencing handovers with a traffic volume per subscriber of DL 10 Mbps 3GPP 5G Use Case
  • Understand 5G simulation flow through LTENR log file
  • Effect of distance on pathloss for different channel models
    • Rural-Macro
    • Urban-Macro
    • Urban-Micro
  • Effect of UE distance on throughput in FR1 and FR2
    • Frequency Range - FR1
    • Frequency Range - FR2
  • Impact of MAC Scheduling algorithms on throughput, in a Multi UE scenario
    • Round Robin
    • Proportional Fair
    • Max Throughput
    • Fair Scheduling
  • Max Throughput for various bandwidth and 𝝁 configurations
  • Max Throughput for different MCS and CQI
  • Outdoor vs. Indoor Propagation
    • Outdoor
    • Indoor
  • 4G vs. 5G: Capacity analysis for video downloads
    • 4G
    • 5G
  • 5G Peak Throughput Analysis
    • 3.5 GHz n78 band
      • 100-Mhz no pathloss with 4:1 DL-UL ratio
      • 50-Mhz no pathloss with 4:1 DL-UL ratio
    • 26 GHz n258 band
      • 400-Mhz no pathloss with 4:1 DL-UL ratio
      • 200-Mhz no pathloss with 4:1 DL-UL ratio
  • gNB Cell Radius for Different Link Budgets
    • 3.5 GHz n78 band (C band)
    • 26 GHz n258 band (mmWave band)
  • Impact of numerology on a RAN with DL/UL applications involving phones, sensors and cameras
  • UE Movement vs Throughput
  • 5G KPIs for single and multi-UE scenarios