GSM / CDMA / LTE / LTE - A
Base station - UAV Network Communication (TR 36.777 pathloss)
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12.2 v13 MATLAB Version R2019b or above MATLAB Toolbox MATLAB, Simulink, Robotics and System Toolbox, UAV Toolbox File Exchange Project of MATLAB (Only for < R2020a) Robotics System ...
How to obtain the total packets transmitted by each device with respect to time in LTE?
Applicable Versions NetSim Standard NetSim Pro Note: Please scroll down to see the code modifications for appropriate releases. Applicable Releases v13 The total packets transmitted by each device with respect to time can be obtained as a log file by ...
Explain a simple DRX implementation in NetSim LTE?
Applicable Versions NetSim Standard NetSim Pro In LTE Networks, Discontinuous Reception (DRX) is used to reduce the power consumption of the user equipment. In this article, we explain a simple method for power saving in UEs for up-link data ...
How do I trace TCP in LTE Scenarios?
Create a scenario as per the screenshot below in LTE: Settings done to create the network: 1. Grid length - 1000*1000m 2. Select TCP in all devices in Transport Layer 3. Create 2CBR applications from Wired Node to UEs with default properties 4. ...
How do I see MIMO spatial multiplexing and transmit diversity in NetSim LTE?
Create a scenario as per the screenshot below in LTE Settings done to create the network: 1. Grid length - 1000*1000m 2. Select UDP in all devices in Transport Layer 3. Change all wired link speeds by 10 Gbps 4. Create 4 CBR applications from Wired ...
Time-to-Trigger(TTT) modeling in 5G and LTE handovers in NetSim
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v13.3 v14.4 NetSim allows users to configure handover-related parameters such as: Handover Interruption Time Handover Margin Time to Trigger (TTT) These parameters can be set directly ...
How to vary the Handover Margin in LTE?
Applicable Versions Netsim Standard Netsim Pro The Hysteresis margin also called HO margin is the main parameter that governs the HO algorithm between two eNB’s. The handover is initiated if the link quality of another cell is better than the current ...
How to interface NetSim LTE Module with SUMO for LTE based VANET simulations?
Applicable Releases v10.2 NOTE: 1. From Netsim v11 onwards, a dedicated module named "LTE-VANET" has been introduced to perform Vehicular Network simulations using Netsim LTE library. 2. From v12.2 onwards, the networks LTE VANET, LTE D2D and LTE ...
Explain the flow of a packet from Packet data network to the LTE Network during simulation?
Let us run a simple simulation where an application (CBR) is configured to flow from a Wired node in the PDN to a UE The packet trace would show CBR as PACKET_TYPE when this packet is flowing in the Packet Data Network, and it comes with a unique ...
How to print the number of resource blocks allocated to UEs to a file?
Applicable Versions NetSim Standard NetSim Pro The LTENR Radio Resource Allocation csv log file records information related to physical resource block (PRB) allocation such as the Total PRBs, Slot Start Time(ms), Slot End, BitsPerPRB, BufferFill, ...
How do I calculate the number of resource blocks allocated in LTE?
In MAC_Scheduler.c of LTE project the value of enbMac->ca_mac[carrier_id].nAllocatedRBG*enbMac->ca_mac[carrier_id].nRBCountInGroup can be logged at the end of resource block allocation. This will give you the number of Resource blocks allocated per ...
How do I find out range/cell size of an LTE eNB?
The range/cell size of the eNB is not fixed in NetSim. This would vary based on 1. eNB Transmit power 2. Wireless Channel Loses (Pathloss, Fading, Shadowing) A UE can decode a signal from the eNB when, SNR > Threshold (this threshold depends on ...
How to obtain LTE Air Interface Packet loss with respect to time?
LTE Air Interface Packet loss can be logged into a single or a separate file and then be plotted as per your requirement. Following is one such example where we log the Packet Loss in each air interface into a separate file along with the event time. ...
SNR Calculation in LTE Networks
Applicable Versions NetSim Standard NetSim Pro The Signal-to-Noise Ratio (SNR) is defined as the ratio of the received signal power to the thermal noise power. SINR(dBm) = log( Receivedpower(mW) / (Interference Noise(mW) + Thermal Noise(mW))) The ...
What is the Maximum number of UE's that can be connected to eNodeB's in NetSim?
The NetSim Standard version allows up to 500 UEs to be connected to eNodeBs in an LTE network. To create a large scenario involving a higher number of UEs connecting to an eNodeB, the Rapid Configurator option can be used. For more details on ...
How can I plot SNR measured by UE?
Applicable Versions NetSim Standard NetSim Pro The steps to plot SNR measured by UE across different versions of NetSim are given below. Applicable Releases v14.4 or Higher Versions After the creating the scenario, click on Plots/Logs in right panel ...
How to calculate PHY Data Rate in LTE?
The theoretical calculation for the LTE Air Interface is as follows One Resource block(RB) can have 12 subcarriers (each carrier is 15 kHz) in frequency domain and 0.5ms (7 symbols) in time domain. Thus, total number of symbols per resource block = ...
How does association happen in LTE in NetSim?
LTE Association occurs by exchange of control packets between the ENB and UE. Initially, the UE sends the RRC_CONNECTION_REQUEST packet to the ENB. The ENB in response sends an RRC_CONNECTION_SETUP packet back to the UE. The association is completed ...
When and how does handover occur in LTE?
Handover is initiated by ENB on receiving MEASUREMENT_REPORT from the UE’s. The handover decision is also taken by the ENB and not the EPC. The handover also involves the exchange of various packets. First UE sends MeasurementReport packets to the ...
What are the settings needed to setup handover in GSM and how can this be analysed?
Create a network with two base stations connected to an MSC Let BS1 be at (1000,1000) and the BS2 be at (2000,1000) and the network grid be 5000 * 5000 Keep MS1 at 500,1000 and set mobility to zero Keep MS2 at 1500, 1000 (mid way between two BS) and ...