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Network Simulation - Science topic
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Questions related to Network Simulation
I'm currently searching for widely used simulation tools for IoT research. As we know, the Internet of Things (IoT) paradigm is a complex and multidisciplinary concept. It is important to develop applications that meet its requirements. Integrating IoT technology can be complex, so simulation is necessary to evaluate the system's components and ensure they meet design requirements.
Can anyone guide me on how to discover the most appropriate tools for modeling and testing IoT research? Additionally, where can I access materials to educate myself about these tools?
Hi all,
I am working with NetSim which is an end-to-end, full-stack, packet-level network simulator and emulator to simulate 5G networks, and want to integrate Deep Reinforcement Learning (RL) for my research.
My understanding of NetSim is reasonably good, and I am now looking to apply RL within this framework so as to learn optimal policies.
I have previously worked on a basic DQN model for Power Control and Rate Adaptation in Cellular Networks. I also tried to use RL to find the optimal serving capacity for a data batch arrival problem.
I have two questions:
(i) Any suggestions for RL projects for 5G using NetSim?
(ii) Where in the NetSim code should I start integrating RL algorithms?
I have done considerable research and understand the general workings of an LTE network, but my question is: how does a cellular network such as Verizon, Sprint, etc. function? Examining my local area using AntennaSearch, I discovered that there are 57 towers. If I have a Verizon UE/handset (no Femtocell), I should only be able to connect to the EPC via an eNodeB/tower controlled by Verizon, right? Or could I use any of the 57 towers in my area? From the result on AntennaSearch, none of the listed towers were explicitly controlled by Verizon so I'm assuming that they control towers/eNodeBs under other names.
I would appreciate it if anyone can point me in the right direction with this question. I am moving on to simulating an actual network. Once I know what towers/eNodeBs make up a particular network, it becomes an easy task to generate the topology in ns3. Thanks.
function [Y,Xf,Af] = myNeuralNetworkFunction(X,~,~)
%MYNEURALNETWORKFUNCTION neural network simulation function.
%
% Auto-generated by MATLAB, 01-Apr-2023 00:29:40.
%
% [Y] = myNeuralNetworkFunction(X,~,~) takes these arguments:
%
% X = 1xTS cell, 1 inputs over TS timesteps
% Each X{1,ts} = 4xQ matrix, input #1 at timestep ts.
%
% and returns:
% Y = 1xTS cell of 1 outputs over TS timesteps.
% Each Y{1,ts} = 3xQ matrix, output #1 at timestep ts.
%
% where Q is number of samples (or series) and TS is the number of timesteps.
%#ok<*RPMT0>
% ===== NEURAL NETWORK CONSTANTS =====
% Input 1
x1_step1.xoffset = [40;20;40;10];
x1_step1.gain = [0.0666666666666667;0.05;0.05;0.1];
x1_step1.ymin = -1;
% Layer 1
b1 = [-2.6491297155389195161;1.760336089106702584;1.6398067063960171108;0.9177075806031128602;-1.4761983536611926748;0.275159870040095067;-1.4879060682820477446;1.9696257706183293301;2.1817650132807728802;3.2407541052221184863];
IW1_1 = [2.9107116995306858698 0.020045809688666926807 -0.7213288732558067462 -0.35355014987443855734;-0.78415290885139299348 2.1620717371802546936 1.9986262152483760257 0.73394638161677838717;-0.60332577542935628134 0.36919294585372963713 0.56789908295376712033 1.8886814261468365395;-0.41372698158378440336 2.07991713220274832 1.8392164942687596607 -0.4149439342002693154;1.8251305698269497668 -1.8100060978190763983 2.1253806758662587839 -0.20297346905145868812;0.72769678044808427941 -0.42294970520998020902 2.5696556898352245213 1.5025226478733253455;-0.54990739957004919347 -1.7497697640971152655 -0.8273354757144428806 0.39315970363298796686;-0.30945750294905238764 -1.8019228954213091232 -2.5111243875575213202 0.079001418949672830294;-1.0691388657257299144 -0.2208636798185789063 1.2120058130665820606 -1.8443207419376965728;2.0156371100772290106 -0.48638781398035080272 -1.0416631454405287371 -1.3136601408706976013];
% Layer 2
b2 = [0.054184247339965789514;-0.28156322626833285572;0.38465049209181595424];
LW2_1 = [0.4627288718431851744 0.41902162291665384641 0.45104963674116588246 -0.18001103631971338004 0.0096271504669345545069 -0.015977183622564644638 0.21048187961321102035 0.21569590240416905425 0.14039680976530213852 -0.1345008801790371078;0.49153199309846229426 0.56057695095383930362 0.020144865726856753252 -0.33262306066701291529 -0.21806490196903238754 0.39032319271931259497 -0.31495042266468115111 0.23252227186432056216 0.056638683994068461658 -0.50313305668003216464;-0.67602621676039309495 -1.5188191954465772859 0.36008657058699833353 1.1291743399777320889 -0.48788206787418042509 0.35182774397824312373 0.56106769711464088424 -0.36218101294025317749 -0.50495893464108454474 0.85467807305577270238];
% Output 1
y1_step1.ymin = -1;
y1_step1.gain = [0.00171526586620926;0.00823045267489712;0.0263157894736842];
y1_step1.xoffset = [890;67;5];
% ===== SIMULATION ========
% Format Input Arguments
isCellX = iscell(X);
if ~isCellX
X = {X};
end
% Dimensions
TS = size(X,2); % timesteps
if ~isempty(X)
Q = size(X{1},2); % samples/series
else
Q = 0;
end
% Allocate Outputs
Y = cell(1,TS);
% Time loop
for ts=1:TS
% Input 1
Xp1 = mapminmax_apply(X{1,ts},x1_step1);
% Layer 1
a1 = tansig_apply(repmat(b1,1,Q) + IW1_1*Xp1);
% Layer 2
a2 = repmat(b2,1,Q) + LW2_1*a1;
% Output 1
Y{1,ts} = mapminmax_reverse(a2,y1_step1);
end
% Final Delay States
Xf = cell(1,0);
Af = cell(2,0);
% Format Output Arguments
if ~isCellX
Y = cell2mat(Y);
end
end
% ===== MODULE FUNCTIONS ========
% Map Minimum and Maximum Input Processing Function
function y = mapminmax_apply(x,settings)
y = bsxfun(@minus,x,settings.xoffset);
y = bsxfun(@times,y,settings.gain);
y = bsxfun(@plus,y,settings.ymin);
end
% Sigmoid Symmetric Transfer Function
function a = tansig_apply(n,~)
a = 2 ./ (1 + exp(-2*n)) - 1;
end
% Map Minimum and Maximum Output Reverse-Processing Function
function x = mapminmax_reverse(y,settings)
x = bsxfun(@minus,y,settings.ymin);
x = bsxfun(@rdivide,x,settings.gain);
x = bsxfun(@plus,x,settings.xoffset);
end
Digital wave algorithms can be used to perform electrical network simulation in time domain. The response of a circuit simulated by means of the DW equivalent can be used as "exact" solution to compare the response coming from a Nodal Analysis solver like Spice.
Hi researchers,
I am working on a BAN network consisting of 10 nodes and a one Sink using Castalia simulator, I am evaluating the performance after a simulation by working on the change of transmission power level to find the PLR (Packet Loss Rate).
Now, I want to know if there is a correlation (relation) between the node position in the BAN network and the PLR (Packet Loss Rate)?
I want to know if there is a proportional relationship between the transmission power and the distance between the nodes and the Sink. The same thing i want to know if there is a relation between the transmission Power and the distance between the Sink and the nodes.
Can you help me with a paper that presents these parameters and that presents a similar study?
Sincerely
I am working on 5G network simulations using a network simulator currently. I am running simulations on a system with good hardware configuration. However, simulations are taking a long time to complete. I want to make simulations faster. Any suggestions will be very helpful.
I want that my omnet simulation model can create a socket and send it to a real application that is on listen. Is there any solution for this?
Many thanks.
I have created a new packet header in NS2 which contains two fields.Is there any way to check to see if the packet header fields contains the value I have given through tcl.
Dear All.
I am working in LAA WiFi coexistence scenario. For my work, I need to calculate the Latency/Delay in a different way.
From my understanding, the way current solution is calculating the delay is that it is monitoring the time between the packet was first transmitted and last seen from the receiver's perspective. It is done in the FlowMonitor class where you calculate all the delay into delaysum and calculate the average delay.
Now, what I want to do is that, for every received packets, I want to set a timer when the packet is being generated and add with the individual delay values and calculate the avg delay. Now, as I am talking about the LAA-WiFi coexistence, I cannot make a solution that only works for Wi-Fi. So I have to solve this problem from the base, I mean, the Packet class.
Did anyone work in this problem before? Need some expert suggestions. And Thank you in advance for your kind assistance.
I've built a multi-valued logic model containing 64 nodes. Do someone here know a tool able to run 1,000 initial states for this simulation in synchronous update?
hello. Could anyone suggest a software (in open access if possible) capable to simulate and identify electric network problems in interconnecting building systems. Thanks in advance.
Hi there RG community, I get back with a new couple of questions, I'm trying to implement a probabilistic routing protocol in NS2/NS3, but there is no much literature on it. Is there someone do that before now? If so, How can I proceed? I'm opening to exchange on that. Thx!
I have invented a new routing protocol, and I want someone who is experts in networking-routing, network simulation, and programming.
Doing a simulation on existent technology is not that hard, but implementing new protocol and integrate it with the simulation tool is a bit hard. For example, in SIMNET, you can implement existent technology and there is a work space to develop your new technology and run both technologies with different scenarios to have the analysis aspects needed.
Of course, I will pay who will do this project.
Once the new protocol developed, I want to compare it with MPLS, Segment routing, ... etc.
If you are interested and have the time, please contact me at:
Regards,
Abdullah
In Mobile Ad Hoc Network I had a security issue, that is already identified by IDS.
I wanted to simulate a handover algorithm for ad hoc networks, I want to know what are freely available supporting tools for academic research?
When I run large simulations with 100s of devices it takes several hours for the simulation to complete. So if I need to run like 20 - 30 different parameter settings then it would take me several weeks to complete. How can I reduce the time taken for simulating large networks? Thank you
What is the best VANET simulator? Yes, there many simulators that simulate VANETs, but I do not know which one is better. The one that can reflects reliable and trusted and Packet Delivery Ratioresults. I work in routing in vanet and I want to know which one is better i couldnt install ns2 well please help me.
I'm working on WSN. I want to do clustering and aggregation, and I want to optimize the results. Does OMNeT++ support this?
Since I'm a beginner with this tool, can anyone provide any ideas on how to learn about this tool? Where can we add our code?
Hi
I want to simulate my modified AODV protocol to prevent a blackhole attack in ns2 ?
Can anyone to help me? I'm starting to learn ns2 ?
I need to know whether the COOJA simulator is efficient to simulate the security algorithms of Wireless Sensor Networks?
I have 4 hosts connected to a switch. I want host 1 to ping host 4. There is no such module as switch in NS3. How can I enable this?
Analyze the working of token bucket traffic shaper on 5th generation mobile networks and the performance of fuzzy predictor for dynamic token generation rate in 5th generation mobile networks.
Tcpreplay use to replay network traffic
I'm considering the use of social network simulation to evaluate different theories that effect information diffusion as a subset of transactive memory systems (these systems are used as a meta-dictionary - telling people (Individuals, groups, organizations, etc) where to find expertise...They also have a role in decision making when a "pattern" is detected a relatively quick decision is made...
I need to perform network simulation between wireless sensor network for my research work. Kindly suggest me which simulator is best and open source
I am working with SDN to manage flows in a network. I wanted to experiment/know if there is a way I can simulate different radios(Bluetooth,Wifi,Zigbee) which work in the same ISM band to better manage the whole environment. Any help is appreciated. Also best wishes for the new year
I need help if anyone have any idea about IoT simulator recommend me
Hi,
I want to connect an optical network simulated in OMNET++ to an SDN controller of MININET and also wants to control my network with that controller. Can anyone suggest me how can I connect these?
Thank you in advance.
Hi everyone,
I invented a new networking protocol. It makes the traffic very fast from source to destination. the idea is that the protocol makes the packets forwarded at routers without searching the routing table. So, I changed the structure of the frame by adding some control feilds.
To simulate the above idea, I have to change the structure of the farme and change the function of the router for forwarding packets.
Which Netwrok simulation toolls is easy and do the job for me?
Omnet++
NS2/3
.... etc.?
Regards.
Abdullah
I want to simulate an LTE-Advanced network using MATLAB. I need to implement my own Handover optimization algorithm. Can anyone help me with code examples or steps to follow?
I have a requirement wherein I need to switch between multiple forward error correction (FEC) schemes at MAC layer depending on the changing wireless network conditions. Can someone please suggest which of the following network simulators is suitable for implementing this: NS3, OMNET++, OPNET?
Can some one please explain what is "simulation time" ? How is it related to real time (Wall clock) ? And how do I get current time in NetSim ?
I got limited resources about IPv6 only network & hosts creation and testing over MININET. i want to test routing operation over IPv6 only network with Openflow.
I am doing research involving implementation of a security framework which can analyse 6LoWPAN (Network Layer in Internet of Things) and CoAP (Application Layer in Internet of things) for security weaknesses.
I have been able to find names of a few software like OMNET++, NS3, NS2 for network simulation, but I have no idea on how to simulate attacks on them. I also have Nessi2 which can simulate agent based security analysis, but I am not sure if I will be able to implement IOT layer security testing framework on it.
Any heads up on where to start and what to do next will be very helpful.
I made an equation using a Artificial Neural Network (ANN) using MATLAB NN Toolbox for two input and one output.
While the test output (0.863) close to the experimental value (0.8646), the output from the equation shows completely different.
For your information, i was using the following equation format .
Output, Y = LW (x) +b2
The hyperbolic tangent function x = exp(a)-exp(-a)/(exp(a)+exp(-a) ) where a = ∑{(IW∗Input)+b1}.
any advice and suggestions will be greatly appreciated
Thanks in advance.
Please anyone help me for selection of network simulator for routing in VANET which is related to Java.
I am not getting proper secure VM scheduling and provisioning algorithms like simple cost-aware or energy-efficient scheduling algorithms.
I am looking for some open source, user friendly, network simulation software. Something that students can configure different nodes with appropriate configuration information and observe how packets traverse the network visually. Ideally, such software would also allow the designs to be exported as an image and/or edited in Visio. Is anyone aware of such software?
I am working on my MSc project titled "A Unified Trust Management Framework for IoT". One of my tasks is to provide results of network simulation of the trust management in WSN. Which network simulator ( free) would be best to approach this aim? In the later stage I would like to implement machine learning algorithms like LDA or DT.
Hi everyone, hope you are doing well. Please guide me, I want to set my network like this: that sink node on receiving a packet start sending packets back on the same route but when it receives a packet from other route then sink node starts stop its prior transmission and start transmission again on new route.
What network simulators support SDN along with Group Tables? I would like to use the group table feature that allows packet replication and forwarding to multiple outgoing ports (for multicasting).
I have simulated a reconfigurable reflection element using varactor in CST, and lumped network element was used in the model. When I use diode, as C varies, the reflection phase don't change. When use RLC serial, as C varies, the reflection phase varies.
- what is the differences between diode and RLC serial of lumped network element in CST?
- Which should I use when simulating reconfigurable reflection element?
Many thanks:)
I have created ns2 simulation for AODV flooding with 70 nodes in it. I would like to create table for node no. 56. Table should include source ip of incoming packet and hop count of it. How can I achieve this?
Hello,
I want to convert the tracefiles of RandomWayPoint in BonnMotion to be included in ONE simulator. I have downloaded the orderedNS2parser.pl script for converting it. But how should I convert the tracefiles using this script and how should I use them in my simulation.
It will be really helpful if somebody can guide me.
I am trying to simulate handover authentication in an lte network. I know of tools such as AVISPA however I am looking for a tool like Omnet++ because Omnet++ simu_LTE only simulates the data plane of an LTE network
I want to create a 2x4 grid in ns2 in which sensor nodes are deployed uniformly in each grid. Now the only function of sensor nodes sense data and communicate it to data mules(mobile nodes) To ensure equal node on every mobile node, the sensor nodes are uniformly placed. I am using 8 mobile nodes(one node in each grid) and 100 sensing nodes. So far I have completed my grid and introduce mobile nodes in it as well. Now what i need to do is to attach the mobile nodes with sensor nodes so that when a sensor nodes comes in radius of mobile node, it sends data to it. Just tell me how can i attach mobile agent(data mules) with sensor node. I am not asking for any code, just tell me any document which can help me in this matter. Thanks
During the compiling process in matlab
when I typed this command (mcc -W cpplib:test -T link:lib test.m) in the command window of matlab, it work
But, when I put it in a script, I got this error
mcc -W cpplib:test -T link:lib test.m
Error using mcc
Test checkout of feature 'Compiler' failed.
what is the solution of this problem?
I proposed caching algorithm for the web content and I want to simulate it using NS2. how can I start?
I wish to train a neural network with four input neurones and two output neurones. Two output neurones corresponding to average surface roughness and maximum forming angle resulting from the forming process. surface roughness is in the range of 2-8 micron while max. forming angle varies from 76-85 degrees. How should I train the network in Matlab? Is it similar like 4-n-1 that instead of 1 output neurone, I should select two neurones in the output layer?
I have started to work on SDWSN
I have simulated a wireless sensor network in omnet++, now I want to
connect this network to SDN controller and control my network with SDN
controller than run in mininet.
But I don't know How can I connect controller and network that simulated in omnet++.
please guide me.
Hi
I am looking for simulator or hardware that I can model the 2.4GHz channel with 802.11 802.15 and Bluetooth and analyse the interference.
Best
I'm starting to work on a project about rfid networks and I'm looking for the best way to simulate it. I've just read about softwares as Omnet++ and NS, but I still have some doubts.
i follow steps in "http://www4.ncsu.edu/~rhee/export/zmac/software/zmac/zmac.htm" site to execute zmac on ns2.26, but i apply these steps on ns2.35.
when i execute DRAND using the command:
ns simple-wireless.tcl <numNodes> <scenario.tcl>
there is an error " bash: syntax error near unexpected token '<'
and when i execute " "ns simple-wireless.tcl"
also there is an error as num. of nodes is zero
what is the "scenario.tcl" and how can i generate it?
i don't know what can i do?
please can any one help me?
thanks
jannat
hi,
Please, I get this error while trying to run a tcl script generated by
mannasim .
ns ns-mannasim mannasim-rede-plana.tcl
ns:
[code omitted because of length]
: invalid command name "DataGenerator/TemperatureDataGenerator"
while executing
"DataGenerator/TemperatureDataGenerator set sensing_interval_ 0.0"
i am using ns2.35 patched mannasim !!!!! please helpp
Does existing package supports all the above technologies at a time in the same program. Should we install any package in additional to the existing libraries?
Kindly suggest me any relevant material or website with this information. Thank you.
Once exploring the BookSim, I got somewhere result power analysis, but I didn't exactly understand how we can calculate power in BookSim, as I want to see which topology under which parameters uses mininum power.
I modified the location aided routing (LAR1) protocol which is the built-in protocol in Qualnet 6.1. Specifically, i made changes in the request zone of LAR1. The function in which i made changes is named "Lar1CalculateReqZone" . However, for a fixed simulation scenario, there is no change in the network layer results between original and modified code. i have also uploaded the cpp files of both original and modified code. I kindly request you to let me know the problem. Also, please let me know if we have any open free qualnet forums to discuss coding issues. Thanks in Advance.
The whole idea of the project is to implement an alert system which is triggered when an ambulance is travelling along a route to the hospital. All the cars in the route are notified about the approaching ambulance and they give way to it. We just need to alert all the vehicles in the route. The giving way part is left for the driver of the car to follow
i need some channel specific information like channel attenuation, received signal strength, signal delay ,
can any help in this regard
How to set the value for noise in ns2? I need to set the noise value foe ieee_802-15-4. or where we can find the default value for this parameter?
Thanks in advance..
dear you, i need parameters for my simulation D2D in cognitive network , where i can find it?
idle spectrum : W =
the bandwidth used by SUj : Bj=
the power of noise :σ=
the cost of unit power: π=
the value of unit datarate : λ=
SUj’s transmit power :Pj =
PUj’s transmit power :Pi=
SUj’s channel gain :Gj=
PUj’s channel gain :Gi=
the undesired interference link of PUi :Gij=
the undesired interference link of SU : Gji =
constrain the interference caused by D2D communication :
γp=
γs=
just a note that there are 25 SU and 25 PU so ,which parameter will be fixe and which will be changeful?
thanks in advance
I am looking for a free software that can be used for coding and getting simulation results of analyzing complex networks. The software should have existed functions of calculating different network measures such as shortest paths, geodesic paths, betweeness centrality and other centralities ( Katz, eigenvector, closeness...etc) dynamically.
Thanks
The distribution simulators like Open DSS,GridLab-D,CYMDIST are available for analysis of distribution network and also some MATLAB based platforms like MATPOWER and PSAT are there in which analysis of a network can be performed.So I want to know which of these software/platforms can be used to perform distribution automation strategies like network reconfiguration ?
Excluding the fact that GloMoSim is free and QualNet is licensed, can anybody knows which is the best simulator among GoMoSlim and QualNet? Somebody told me that QualNet has more provisions than GoMoSlim. Is it true?
dear all, i'm a newbie in ns2, and i got assigment to implement OLSR + PGB in ns2, my problem is i don't know how to get signal strength neighboar. i need "signal strength" to split into 3 area (in, PGB, out) then i can chose MPR in PGB area only. can you help me sir, please regrad
I've trained neural network using LM backpropagation on matlab. When i test (simulate) the network several times using new input data, the test result OUTRANGE the target data.
My target data, range between 0.1 to 0.3 but the simulation result sometimes show value greater than 0.3. Is it common?
I only use 18 data pair since I couldn't find more data
Hi, everyone. I don't know anything about simulation. I want to start my research on WBAN. For this stimulating the MAC protocols and Routing algorithms which simulator is best. please provide existing simulations for mac protocol in w.s.n
Network simulation is a one of the most major evaluation methodologies in the area of computer networks. What are the main Network simulators that been used in the field of communication systems?
Any particular model that can be downloaded?
I have to make a network with fuzzy and k means algorithm.
I am building an algorithm to scheduel sensor nodes to sleep/wake in the WSNs, the research work target the application layer of the WSNs protocl stack .Any simulation tools or materials to start my research work? I would build from a simple enviroment esclating to much complex algorithms?
awk and xgraph still not working
- with respect to xgragh, (i install ns-allinone- 2.35 which containing xgraph12.1) but bash: xgraph not found
- also awk still unclear with me
How we can create multiple group of nodes in same simulation area and also anyone can provide code in NS - 2 for Reference point group mobility model?