Improving quality of service with packet scheduling algorithms in wireless adhoc networks

Abstract

Wireless Local Area Networks (WLANs) are becoming an increasingly important technology, bringing the world closer together. Wireless LAN is used in every area, such as education, agriculture, pharmaceuticals, manufacturing, transportation, military, and research. Therefore, the importance of WLAN security is significant. There are two popular styles of WLANS: client-server networks and ad-hoc networks. The difference between these two networks is client-server systems use access points or routers to transmit data, but ad-hoc networks do not rely on any pre-existing transmitters. Instead, all the nodes in an adhoc network participate in the routing process by forwarding messages to each other. WLANs are defined by frequencies; they are susceptible to malicious jamming attacks. It is easy for attackers to accomplish sending multitudes of useless packets in a specific frequency. Jamming attacks attempt to make the system crash by flooding it with useless traffic, and use all the resources in the network so users in the network cannot connect to the system. It is consistently used by hackers to break network systems because of ease and security issues. Wireless networks are computer networks that are not connected by cables of any kind. The use of a wireless network enables enterprises to avoid the costly process of introducing cables into buildings or as a connection between different equipment locations. The basis of wireless systems is radio waves, an implementation that takes place at the physical level of network structure. Wireless networks use radio waves to connect devices such as laptops to the Internet, the business network, and applications. When laptops are connected to Wi-Fi hotspots in public places, the connection is established to that business wireless network. A MANET is a type of ad hoc network that can change locations and configure itself on the fly. Because MANETS are mobile, they use wireless connections to connect to various networks. This can be a standard Wi-Fi connection, or another medium, such as a cellular or satellite transmission. Some MANETs are restricted to a local area of wireless devices (such as a group of laptop computers), while others may be connected to the Internet. Wireless adhoc networks are deployed in emergency situations, military kinds of applications, surveillance monitoring, and in the healthcare industry. The Nodes are dynamic and can accommodate themselves in any existing infrastructures, placed randomly in the network. Every node can easily communicate with any other node through the base station directly. Recently, the natural mobility and scalability of the wireless networks are directed to improve technology and reduce costs and at the same time. The remote systems have increased significantly with more inclinations over wired systems in the previous couple of decades. The remote systems have increased considerably more inclinations over wired systems in a previous couple of decades. newline