Today variety of network simulator is used to simulating a network. One of the recently used network simulator is defined as Ns3 simulator. The classification may include Ns2, and Ns3 simulator. We are offering both Ns2 and Ns3 simulator projects for the final year students. A computer to a network can be connected by the cable in the real world. Often over the media which data flows in these Ns3 simulator networks are called channels. To connecting the computer to an Ethernet communication channel when connect the Ethernet cable to the plug in the wall. In the simulated world the Ns3 simulator plays a very big role. A communication channel can be represented by an object when one connects a Node. Here the channel is the basic communication sub network abstraction and is represented in C++ by the class Channel.
The communication sub-network objects and nodes connecting to them are provided by the methods which are used in the Channel class. In the object oriented programming sense the developer can be specialize the channels used in Ns3 simulator. At sometimes a Channel specialization may model as simple as a wire in Ns3 simulator. The large Ethernet switch or three-dimensional space full of obstructions in the case of wireless networks are some complicated like specialized Channel can also model things.
The ability to handle data and voice transmissions simultaneously is the fundamental strength of Bluetooth wireless technology. A variety of innovative solutions are provided to the users such as printing and fax capabilities, hands-free headsets for voice calls, and synchronization for PCs and mobile phones, just to name a few. The application specific is the range used in Bluetooth technology. The minimum range of 10 meters or 30 feet is mandated by the Core Specification. The manufacturers can tune their implementations to provide the range needed to support the use cases for their solutions and there is no set limit.
The interference between wirelesses technologies sharing the 2.4 GHz spectrum are reduced by designing adaptive frequency hopping (AFH) capability which is one of the Bluetooth technology’s in Ns3 simulator. The advantage of the available frequency is taken by the AFH works within the spectrum. And the frequencies they are using are also avoided and this is done by the technology detecting other devices in the spectrum. At 1 MHz intervals this adaptive hopping among 79 frequencies gives a high degree of interference immunity. And within the spectrum a more efficient transmission is also allowed by it. The greater performance is also provided by this hopping for users of Bluetooth technology even along with Bluetooth technology when other technologies are being used. The unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz is the operating frequency of Bluetooth technology. At a nominal rate of 1600 hops/sec is using a spread spectrum, frequency hopping, and full-duplex signal. And in most countries 2.4 GHz ISM band is available and is unlicensed.
The Core Specification is mandates a minimum range where a range is defined as an application specific in Ns3 simulator. There is not a limit and the use case can be supported by the manufacturers can tune their implementation when they are enabling. The Class 2 is the most commonly used radio in Ns3 simulator and uses 2.5 mW of power. Very low power is consumed by the Bluetooth technology when using Ns3 simulator.