Simulation of wireless sensor networks, researchers have developed a number of design simulation platform (or establish a wireless sensor network model in the existing platforms), including the NS-2, OPNET, SensorSim, EmStar, OMNet ++, G1oMoSim, TOSSIM, PowerTOSSIM and so on.
1 NS-2
NS-2 (Network Simulator-2) is famous for discrete event simulation tool for network research, which includes a large number for a wired or wireless, local connection or via satellite connections TCP protocols, routing algorithms, multicast protocols simulation of network protocols, scheduler and tools. NS-2 simulation focused on the OSI model, including the behavior of the physical layer. NS-2 simulation can be tracked in detail and playback using simulation tools, "Cartoon Network Player" C Network Animator (NAM). NS-2 is a free open source software can be downloaded for free. There are several groups of NS-2 is extended, it can support the emulation wireless sensor network, comprising a sensor model, the battery model, the small stack, and hybrid simulation support tools scenes. Since NS-2 packets very detailed level simulation, the number of packets close to the run time, so that it can not simulate large-scale networks.
2 OPNET
OPNET modeling tool is a commercial communication network simulation platform. OPNET uses a network, node and process three-layer model for simulation of network behavior. Wireless model which is based architecture pipeline determine the connection and communication between the nodes, the user can specify the frequency, bandwidth, power, and other features including antenna gain pattern and including terrain models. OPNET provides a number of models, including TCP / IP, 802.1 1, 3G and so on. TinyOS and existing simulation programs of NesC some researchers implemented on OPNET. But to achieve the simulation of wireless sensor networks, also you need to add energy model, and OPNET itself seems more focused on performance evaluation of network QoS.
3 SensorSim
SensorSim is based on a NS-2 802.1 Network Model DSR is employed. SensorSim for WINS platforms need to be designed with SensorWare Tel script. SensorSim tracking simulation node energy usage, energy models from WINS node, so that it can not be used to simulate the Mote platform. In addition, SensorSim has stopped development and support, can not be downloaded to the program code.
4 EmStar
EmStar provided between the node and run the simulation-based iPAQ Liunx flexible switching environment, the user can choose to run on a host computer to simulate multiple virtual nodes, can run multiple real bridging nodes on a single host the virtual node. EmSta: wireless sensor networks can be deployed in a friendly Linux-based environment, and trace and debug procedures. EmTOS TinyOS program is a tool for simulation in EmStar in. EmStar While wireless sensor network simulation tool is not a true sense, but it is a very useful application for sensor network test environment.
5 GloMoSim
GloMoSim (Global Mobile Information Systems Simulation Library) is a scalable simulation systems for wireless and wired networks, the stratification of a model designed according to OSI. The application layer, transport layer, network layer, data link layer, the packet reception model, radio and radio wave propagation model models using standard APIs for different levels between the simulation. GIoMoSim using Parsec design and development, provides a parallel discrete-time simulation support. G1oMoSim currently only supports a pure wireless network protocol simulation, physical channel characteristics may be used to delay and data link protocols, etc. Simulation sensor network.
6 TOSSIM
TOSSIM (TinyOS mote simulator) is employed for Motes TinyOS be bit-level simulation tool. TOSSIM the TinyOS NesC code is compiled directly under the environment provides a platform on the program will not download real Mote node can be tested on the program executable file that can be run in a PC environment. TOSSIM TinyViz also provides a user interface for displaying simulated conditions .. TOSSIM drawback is that the model does not provide energy, not to evaluate the effectiveness of energy consumption.
7 PowerTOSSIM
PowerTOSSIM TOSSIM is an extension of the model using the measured energy consumption of various energy MICA2 node operation node consumed tracking, performance evaluation in order to achieve energy consumption in wireless sensor networks. The drawback PowerTOSSIM Yes. Program code for all nodes must be the same, but the simulation algorithm abstract network level can not be achieved.
8 All ++
Mainly it consists of six parts:
- Simulation kernel library (simulation kernel library, referred Sim)
- Network description language compiler (network description compiler, nedc)
- Graphical network editor (graphical network description editor, GNED)
- Graphical user interface -Tkenv simulation program
- Command line user interface emulation program -Cmdenv
- Graphical output and Scalar tool -Plove
structure:
