MANETs
What are hopping channels and how are they computed in NetSim DTDMA?
Applies to: NetSim Pro v14/v15 Frequency hopping changes a radio's operating frequency among a set of channels within a configured band. In NetSim DTDMA, the available hopping-channel count is derived from the frequency span and the channel ...
How are BER and packet errors calculated in NetSim DTDMA?
Applies to: NetSim Pro v14/v15 Dynamic TDMA (DTDMA) evaluates each received packet using the received signal power, fading, interference, modulation, bandwidth, and packet size. It first obtains a bit error rate (BER) and then decides whether that ...
Analytically estimating Dynamic TDMA latency for simple scenarios
This article provides an analytical framework for estimating latency in dynamic TDMA networks under simple scenarios. We examine the relationship between network capacity, packet scheduling, and various components of end-to-end latency. The analysis ...
Analytically estimating Dynamic TDMA throughput for simple scenarios
Introduction Time Division Multiple Access (TDMA) is a channel access method that enables multiple nodes to share the same frequency channel by dividing the signal into time slots. By dividing time into slots, TDMA enables efficient sharing of ...
How can we get the energy of a node from source codes of a routing protocol in NetSim?
Battery-related parameters are defined in the BatteryModel source code project of the NetSim source code library. ptrBattery is a pointer variable to the structure stru_battery that is defined in the BatteryModel.c file. To be able to use the battery ...
Source and destination address displayed as N/A in Wireshark for Wireless Nodes?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v13.0.29 This is an issue that occurs in the case of Wireless nodes running IEEE802.11 protocol, due to a bug in NetSim v13.0.29. Please follow the steps given below ...
Why do I see a low throughput in MANET simulations?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v13.0 The application throughput obtained depends on several factors such as the traffic (application) generation rate, Network PHY (data) rate supported, number of ...
When are collided/errored packets marked in packet trace?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v11 v12 v13 Packet collisions can occur in certain wireless protocols. Control packet collisions are likely to occur in wireless networks during route discovery in ...
Understanding OLSR route discovery procedure using route table logs
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 OLSR Route Table updates in MANET Consider the simple MANET network where Node 1 has to communicate with Node 5 using OLSR protocol for establishing the routes as shown below ...
Understanding AODV route reply generation by intermediate nodes
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 In AODV protocol an intermediate node can send a Route Reply if it has an active route to the destination, the destination sequence number in the node's existing route table ...
Understanding AODV route discovery procedure using route table logs
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 AODV routing in MANET Consider the simple MANET network where Node 1 has to communicate with Node 5 using AODV protocol as shown below (associated experiment configuration is ...
How to obtain a log for AODV route table updates in NetSim?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 AODV protocol implementation in NetSim is based on RFC 3561 (https://tools.ietf.org/html/rfc3561). This protocol is supported in NetSim for technologies such as MANET, WSN and ...
Location Aware Routing using Python Interface in NetSim
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v11.0 v12 v13 Location Aware Routing (LAR): Routing for an ad-hoc wireless network is challenging, many routing strategies have been proposed in the literature. With the availability ...
How to add Custom Modulation technique in NetSim DTDMA?
Applicable versions NetSim Standard NetSim Pro In order to add an additional Modulation technique the existing set of Modulation techniques that are available in the Physical layer, the BER table has to be created and provided as input to the BER ...
How do I do scheduling in MANET?
Scroll down to see the sections related to appropriate releases Applicable Releases v11 v12.0 v12.1 Scheduling in the wireless nodes that are part of MANET in NetSim is taken care of by IEEE802.11e. This is enabled by default. IEEE 802.11e defines a ...
How do I simulate multiple MANETS in NetSim?
Till NetSim v10.1 only single MANETs could be simulated in NetSim. Multiple MANETs module was introduced from NetSim v10.2. Note: From Netsim v11.0 onwards, Adhoc link has been introduced to connect devices in infrastructure-less networks like ...
What is a bridge node in MANET?
Applicable Versions NetSim Academic NetSim Standard NetSim Professional Applicable Releases v11 v12 v13 NetSim Multiple MANETs module consists of Bridge nodes that can be used to establish communication between two or more MANETs in a network ...
How do I get the position of nodes over time in a network?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 Code Modification Follow the steps given below to obtain a log file containing the position of nodes along with timestamp: Step 1: Go to Your Work > Workspace Options > Open ...
Why do I sometimes see more packets received than transmitted?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v11 v12 v13 In certain cases, users may notice that Packets Rx are greater than packets Tx in WLAN/MANETs/VANETs with UDP running in the transport layer This occurs ...
How to add a new device to the MANET Network via NetSim Configuration file ?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v11 v12 v13 Let us consider the following Network Scenario with four wireless nodes with all properties set to default: The Configuration.xml file can be obtained by ...
Scheduling nodes using the slot planner in Dynamic TDMA
Applicable Version NetSim Pro Applicable Releases v13 v14 A slot planner can be used to configure a predefined slot allocation pattern for the nodes in the network. Based on the configuration done, slots will be allocated to the devices during the ...
Configuring the radio communication range of wireless nodes and sensors in NetSim
Applicable Version All Versions (Pro, Standard, Academic) Applicable Release v13.2 and above TABLE OF CONTENTS How is the radio range of a wireless device defined in NetSim? What is the default range of sensor nodes? How is the radio range of a ...
How do I vary the channel capacity (PHY Data Rate) for nodes running IEEE802.11 Protocol?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v11 v12 v13 NetSim supports the following IEEE802.11 standards 1. 802.11b, the channel bandwidth is 20MHz. Provides 11 Mbps transmission (with a fallback to 5.5, 2, ...
How to check the connectivity between two nodes in MANET?
Applicable Versions NetSim Standard NetSim Pro To check the connectivity between say, Node A and Node B, 1. GET_RX_POWER_dbm(tx, rx, time) is the API using which you can easily calculate the received power by passing the transmitter id(tx), receiver ...
Why do I see more packet received than sent in UDP metrics of MANET ?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v11 v12 v13 The technical explanation on why packets received are more than packets sent is as follows 1. This is being measured as part of our UDP protocol metrics in ...
Why is TCP Disabled when running IDS in MANET?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 v13 The Sinkhole attack that is implemented as part of IDS uses one of the features of DSR protocol as a loophole. That is, in DSR when the source node broadcasts DSR Route ...