NetSim v14.4 Help
Contents:
Introduction to 5G simulation with NetSim
Simulation GUI
Create Scenario
NetSim 5G Network Setup
Deployment Architecture
Device Placement
NSA Deployment Device Connectivity
Grid Settings
Devices Specific to NetSim 5G NR Library
GUI Parameters in 5G NR
Devices: Click and drop into environment
Model Features
The 5G Frame Structure
Data Transmission Overview
5G NR Stack
SDAP (Specification: 37.324)
5G QoS characteristics
RLC (Based on specification 38.322)
RLC-AM (Based on specification 38.322)
Transmit Operations
Receive Operations
Actions when a RLC PDU is received from a lower layer.
Reception of a STATUS report
PDCP (Based on specification 38.322)
MAC Layer
Overview
MAC Scheduler: Introduction
Round Robin Scheduler
Proportional Fair Scheduler
Max Throughput Scheduler
Special cases
Log File
PHY Layer
Overview of the PHY implementation
Transmit power, Total Radiated power and EIRP
MIMO and Beamforming
MIMO (Digital) Beamforming Assumptions in NetSim
Analog beamforming in the SSB
Rank Estimation
Fast fading
Antenna: Omni and Sector
NR Frequency Bands
UE channel bandwidth
Frame structure and physical resources
Channel state information
Modulation order, code rate, and TBS determination
Transport block size (TBS) determination
HARQ
Segmentation of transport block into code blocks
BLER and CQI/MCS selection
BLER-MCS-SINR Curves
Outer Loop Link Adaptation (OLLA) (Part of Adv. 5G)
Out of coverage
Carrier Aggregation
CA Configuration Table (based on TR 38 716 01-01 Rel 16 NR)
PHY: Omitted Features
Supported max data rate
Propagation Models (Per 3GPP TR 38.900)
Overview
Pathloss formulas
LOS probability
O2I penetration loss
Additional Loss Model
Configuration
Running Simulation
Downlink Interference Model
Configuration
Graded distance-based Wyner model
Exact Geometric Model
Interference modeling in OFDM in NetSim
Uplink Interference Model
5G Core
5G Interfaces
Cell Selection and UE attach procedure
5G Core connection management process
5G Non-Stand Alone (NSA)
Overview
Option 4/4a
Option 7/7a
NSA Packet Flow
Option 4
Option 4a
Option 7
Option 7a
Handover
Use of SNR instead of RSRP
Handover algorithm
Ping pong handovers
Packet flow during handover
Handover Interruption Time
Time-to-Trigger
Buffer transfer and timers
Network Slicing
RAN slicing
Slice Configuration
Recording slice-based resource allocation
Plotting Slicing parameters
Limitations
LTENR Results, Packet Trace and Plots
LTE NR Log
PDCP and RLC Headers logged in Packet Trace
LTENR Event Trace
Radio measurements log file
Radio resource allocation log file
Handover Log file
Code Block Log file
OLLA Log file
LTENR PRB Utilization log file
Enable detailed logs in 5G NR
Featured Examples
Derive from 3GPP standards the theoretical data rate and throughput for a 1gNB - 2UE scenario, and compare with simulation
Introduction
Network Setup
Network Settings
Results
Results and discussion
Exercises
Effect of distance on pathloss, SINR and MCS (7-Cell Hexagonal Layout, Urban Macro Propagation, NLOS)
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
Multi UE throughput with UEs at different distances and channel is not time varying.
Multi UEs at different distances with a time varying channel
Max Throughput for different MCS and CQI
Load balancing in 5G using Cell Individual Offset (CIO)
Introduction
Network Setup
Network Settings
Results
Discussion
4G vs. 5G: Capacity analysis for video downloads
4G
5G
5G-Peak-Throughput
3.5 GHz n78 band
26 GHz n258 band
Impact of distance on throughput for n261 band in LOS and NLOS states
DL: UL Ratio 4:1
DL: UL Ratio 3:2
gNB cell radius for different data rates
3.5 GHz n78 urban gNB cell radius for different data rates
26 GHz n258 urban gNB cell radius for different data rates
Impact of numerology on a RAN with phones, sensors, and cameras
Impact of UE movement on Throughput
Simulate and study the 5G Handover procedure.
Introduction
Network Setup
Handover Algorithm
Throughput and delay variation during handover
Impact of Handover margin and Time-To-Trigger on the performance of a 5G heterogeneous network
QoS in 5G using GBR
Introduction
Methodology
Case 1: Proportional Fair Scheduling (PFS). All UEs are static
Case 2: PFS with RG using Guaranteed Bit Rate (GBR). All UEs are static.
Case 3: PFS with RG using GBR. One of the UE’s is mobile.
Obtaining the EWMA MAC Throughput and Resource share
Results and Discussion
Omitted Features
References
NetSim v14.4 Help
Index
Index