Generate synthetic data that’s as good, or even better than the data you have. Or don’t have.

Machine Learning: Real vs. synthetic data

Machine learning algorithms need ever-increasing amounts of data for training and testing.

The problems with real data are that it:

• Can be difficult and expensive to collect. This is particularly true for data that is complex or specialized
• Is time-consuming to label. This process also requires expert knowledge which comes at a high cost.
• May contain sensitive or confidential information
• Is often unbalanced; it may not contain enough examples of certain classes or phenomena

On the other hand, synthetic data can be:

• Generated at very low cost and in vast quantities
• Perfectly labeled, and hence directly used to train neural nets
• Generated to represent a wide variety of scenarios and edge cases, which can help to improve the robustness and generalizability of machine learning models.
• Created to be free of sensitive or confidential information

NetSim Network Simulator

NetSim is used for modeling, simulating, and analyzing a wide range of communication networks. It covers a wide range of technologies (https://tetcos.com/technology-libraries.html), networking scenarios, and edge cases. Shipped along with our automated utilities (https://tetcos.com/netsim-utilities.html) for scenario generation and execution can generate large amounts of data in the form of CSV files.

NetSim Simulation Data

The output results and data files generated by NetSim include:

• Performance Metrics
  • Instantaneous and average throughputs for each link and each application
  • Buffer occupancy vs. time at source and intermediate devices
  • TCP congestion window vs. Time at End each UE and remote Server

• Packet trace
  • 30+ parameters for every packet as it flows through the network. These include arrival times, queuing times, departure times, payload, overhead, errors, collisions, etc

• Radio measurements
  • SINR, Pathloss, Shadowing, Fast fading, LOS/NLOS states, O2I Loss, MCS, CQI, BS-UE distances, UE-gNB association.

• Radio resource allocation
  • Buffer fill (queue size), scheduling metric, PRBs allocated

Users regularly generate data files that reach up to 10 million rows per simulation. Special cases touch 100 million rows.

Our customers: NetSim is used by 500+ organizations across 25+ countries. Top-tier cellular service providers (CSPs) and 5G equipment manufacturers use NetSim to generate synthetic data to train their machine-learning algorithms.

Write to us for more information about functionality, upgrades, pricing, or an online demonstration!
Email: sales@tetcos.com | Call: +91 76760 54321 | Visit: www.tetcos.com

NetSim is the industry’s leading network simulation software for protocol modeling and simulation, network R&D, and defense applications. It is an end-to-end, full-stack, packet-level network simulator and emulator, providing network engineers with a technology development environment for protocol modeling, network R&D, and military communications.

The Dec release of NetSim (Ver 13.1) rolls out with exciting new features focused on enhanced User Interface, improvements in Wi-Fi, 5G, and so on.

What’s new in UI?

• Your work has been completely redesigned.
• Multiple folder levels are now available for organizing your saved projects.
• Import of experiment files and workspaces redesigned for better collaboration between multiple users.
• Home screen: Sharper fonts. New display of licensed and unlicensed components.
• Experiments and Template examples: the search bar is now available. Short descriptions and scenario images were added for easy understanding.
• Single click switches between workspaces.
• One-click compare code between workspaces.

Install

• Optional installation of third-party tools in the custom mode for a smaller install footprint.
• Third-party tools are now downloaded online and therefore a significantly reduced set-up size.

Wi-Fi 802.11 improvements

• 11 ac now supports aggregation of up to 1024 packets.
• Microsecond to nanosecond round off for 802.11n and 802.11ac transmission time calculations.

Bugs resolved:

• Packets from multiple applications transmitted to different nodes were not aggregated on a per-node basis.
• Incorrect power calculations in virtual interfaces in EDCA.

5G improvements

• UE is out of coverage.
• Beamforming array gain.

Video model enhancements

• New video codes: H.261, H.263, MPEG1 and MPEG2.
• Buffered video (BV1 through BV6) per IEEE 802.11-14/0571r12 standard.

New voice models

• CELP and MELP.
• Propagation models can now be customized by the user.

TCP improvements

• NetSim now runs a single TCP RTO Timer for the entire TCP connection. In prior releases, each segment has its own RTO timer

Note:

• From v13.1 onwards NetSim will no longer work on x86 (32 bit) processors; only x64 (64 bit) processors are supported.
• 0 exported workspaces (*.netsim_wsp) cannot be imported into v13.1. Users should zip the v13.0 workspace folder and then use the “folder” import option in v13.1.
• Map background is available as an “experimental” feature.

Write to us for more information about functionality, upgrades, pricing, or a demonstration!
Email: sales@tetcos.com | Call: +91 76760 54321 | Visit: www.tetcos.com

The May 21 release comes with exciting new features and updates including:

• 5G Core (Based on TS23.501, TS23.502) functions and interfaces:
  • Access Mobility Function (AMF) that coordinates the 5G Standalone registration procedure, SMF and UPF
  • Session Management Function (SMF) that serves as a control plane entity and is responsible for the session management
  • User Plane function (UPF) that is a data plane component that handles user data
  • 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.

• 5G RAN
  • FDD bands added to existing TDD bands
  • MIMO operation with layer count equal to Min (Tx-antenna-count, Rx-Antenna-count). Note that NetSim v12.2 used the abstraction “layer count” directly as a user input
    • 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 covariance (Wishart) matrix
  • Ability to input per gNB pathloss files from 3rd party software tools like MATLAB
    • Pathloss along cartesian X, Y coordinates in a mesh grid around the gNB
    • Best server (gNB) per UE calculation automatically handled by NetSim

• Military Radios (TDMA Radio Networks)
  • Forward error correction (FEC)
  • L-band and S-Band Radios

• Device models
  • Processing delay to simulate compute related latencies

• Applications
  • Faster FTP fragmentation for simulation acceleration

• Satellite
  • Updates to Markov Loo fading model in Satellite networks

• Graphics
  • Simple and Smooth working
  • Reimagined home screen design
  • Workspace enhancements: Size field for experiments and workspaces, and File selection option for import/export

• Documentation
  • Figure and table numbers for all manuals with cross referencing
  • New examples and experiments (for Edu users)

• Utilities
  • Config file generator: Automated scenario generator for generating large scale networks with 1000s of nodes.
  • Batch simulations: Automated execution of 100s of config files sequentially. Ideal for running simulations over night
  • Multi-parameter sweeper: Automated sweep of multiple parameters across its range of values and logging of results in csv for analysis

Write to us for more information about functionality, upgrades, pricing, or a demonstration!
Email: sales@tetcos.com | Call: +91 76760 54321 | Visit: www.tetcos.com

NetSim is a general-purpose network simulation tool used by 400+ customers world-wide; the focus is on ‘networking technologies and protocols’ and it is brand neutral. NetSim comes with a set of example experiments, to aid in the learning of networking concepts through simulation. Students can work remotely by accessing their University license server through VPN. These examples also have well-structured documentation covering Objective, Theory, Network Set-up, Results and Inference.

List of examples in NetSim

• Introduction to NetSim
• Understand the working of ARP, and IP Forwarding within a LAN and across a router
• Simulate and study the spanning tree protocol
• Introduction to the TCP connection management
• Reliable data transfer with TCP
• Mathematical Modelling of TCP Throughput Performance
• Study how throughput and error of a Wireless LAN network changes as the distance between the Access Point and the wireless nodes is varied
• WiFi: UDP Download Throughput
• How many downloads can a Wi-Fi access point simultaneously handle?
• TCP Congestion Control Algorithms
• Multi-AP Wi-Fi Networks: Channel Allocation
• Plot the characteristic curve of throughput versus offered traffic for a Pure and Slotted ALOHA system
• Study the working and routing table formation of Interior routing protocols, i.e. Routing Information Protocol (RIP) and Open Shortest Path First (OSPF)
• The M/D/1 Queue
• Quality of Service (QoS) in 802.11e based WLANs
• Analyze the performance of FIFO, Priority and WFQ Queuing Disciplines
• Cyber Physical Systems (CPS) and IoT – An Introduction
• One Hop IoT Network over IEEE 802.15.4
• IoT – Multi-Hop Sensor-Sink Path
• Study how call blocking probability varies as the load on a GSM network is continuously increased
• Study the 802.15.4 Superframe Structure and analyze the effect of Superframe order on throughput
• Understand the working of OSPF
• Understand the working of basic networking commands (Ping, Route Add/Delete/Print, ACL)
• Study how the throughput of LTE network varies as the distance between the ENB and UE (User Equipment) is increased
• Study how the throughput of LTE network varies as the Channel bandwidth changes in the ENB (Evolved node)
• Simulate and study LTE Handover procedure
• Understand the working of LTE Device to Device Communication
• Analyze how the allocation of the frequency spectrum to the Incumbent (Primary) and CR CPE (Secondary User) affects throughput
• Understanding VLAN operation in L2 and L3 Switches
• Understanding Access and Trunk Links in VLANs
• Understanding Public IP Address & NAT (Network Address Translation)

To know more write to us at sales@tetcos.com

Download the complete experiment manual from
https://www.tetcos.com/downloads/v12.1/NetSim_Experiment_Manual.pdf

Researchers lack the requisite tools for simulating end-to-end 5G networks. There are a few ‘Link-level’ simulators that enable users to model a single link between the UE and the gNB. These can’t be used for end-to-end modeling of the network, from the UE to the host-server. Furthermore, they do not allow for modeling of the entire TCP/IP protocol stack. Open source simulators are very complex, do not have a GUI, not easy to use, require the knowledge of various scripting & programming languages, and come with no support. Hardware test-beds that can be customized are prohibitively expensive. NetSim solves these problems.

NetSim v12 with new 5G library is an end-to-end, full-stack, packet-level simulator and features an easy to use GUI with simple drag and drop functionality. The output of the simulation is available as an appealing Results Dashboard with tables and graphs. Protocol source C code is provided along with which can be modified by researchers to write their own algorithms/protocols.

The 5G library is based on Rel 15 / 3GPP 38.xxx series-

• The 5G library in NetSim models all layers of the protocol stack as well as applications running over the network. It provides integration with TCP/IP stack protocols, Wireless protocols, Routing, Mobility, Output Metrics, Animation, Traces etc.
• NetSim allows for end-to-end connections between UEs and remote hosts over IPv4. The 5G network can be connected to the core using the device “EPC”. Any regular NetSim application (FTP, Voice, Video, etc) working over TCP/UDP can be simulated.
• The fundamental unit used for resource allocation is one Resource block (RB). This allows the user to accurately model packet scheduling.
• NetSim can scale up to 100’s of UEs and gNBs. At this scale, it becomes impossible to model the radio interface at a granularity of one symbol, due to the computational complexity. In fact, it is for this reason that link-level simulators are limited to a single gNB and one or few UEs.
• IP packets arriving from upper layers are segmented by the RLC entity into RLC DUs. The and Radio resource management functions work with these RLC SDUs. At the receive side, the RLC SDUs are concatenated into IP packets.

5G Library features

• SDAP (Based on specification: 37.324)
• RLC (Based on specification 38.322)
  • TM (Transparent Mode)
  • UM (Unacknowledge Mode)
  • AM (Acknowledge Mode)
• PDCP (based on Specification: 38.323):
  • Transmit PDCP SDU
    • Sets the PDCP Sequence Number
    • Adds RLC Header
    • Calls RLC service primitive
  • PDCP Association: UE association/dissociation with gNB
  • Maintenance of PDCP sequence numbers
  • Discard Timer
  • Transmission Buffer
  • PDCP Entity
  • t-Reordering Timer
  • Receive buffer
• MAC Layer
  • Transparent MAC
  • Mapping between logical channels and transport channels
  • Multiplexing and demultiplexing of MAC SDUs from one or different logical channels onto transport blocks (TB) to be delivered to the physical layer on transport channels
• PHY Layer
  • Supported transmission numerologies µ = 0, 1, 2, 3, 4
  • The FR1 bands implemented in NetSim are those that run TDD in Duplex mode, namely n34, n38, n39, n40, n41, n50, n51, n77, n78 and n79
  • The FR2 bands in NetSim are n257, n258, n260 and n261
  • CQI reporting, CQI-MCS
  • MCS-TBS
  • Uplink and downlink physical channel
  • Frame structure and physical resources
  • Modulation mapping: BPSK, QPSK, 16QAM, 64QAM, 256QAM
  • Physical shared channel in uplink and downlink
• mm-Wave Propagation models (Based on 3GPPTR38.900)
  • 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
    • High-loss Model
    • Low-Loss model

View Demo

Write to us for more information about functionality, upgrades, pricing, or a demonstration!
Email: sales@tetcos.com | Call: +91 76760 54321 | Visit: www.tetcos.com