Mitigating Congestion And Collision In Adhoc Networks
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Mitigating Congestion and Collision in Adhoc Networks
Author: Premalatha Natarajan
language: en
Publisher: LAP Lambert Academic Publishing
Release Date: 2014-04
Wireless technologies are being widely used today across the globe to support the communication needs of very large number of end users for voice communications and data services. Data services include activities such as sending e-mails, instant messages and accessing the Web. Due to an increased demand the network becomes congested. The congestion control mechanism in Transmission Control Protocol (TCP) is designed for wired networks. Due to the inherent characteristics of wireless networks, TCP when applied to wireless networks suffers from poor performance because of random loss, burst loss and packet reordering and therefore needs modification from the original protocol. This thesis proposes two enhancements in the TCP Vegas algorithm. The EnhancedVegas and NewVegas algorithms control the congestion in MANETs. An enhancement in MAC layer protocol called CTMAC-F protocol is proposed to control collision in the MAC layer. GPSR routing protocol is used for an efficient routing in adhoc networks. All these provide an integrated layer approach technique to mitigate congestion and collision with efficient routing in adhoc networks.
Ad Hoc Networks
This book constitutes the proceedings of the International Conference on Ad Hoc Networks, ADHOCNETS 2015, held in September 2015 in Italy. The 17 regular and 3 invited papers presented were carefully reviewed and selected from numerous submissions. The papers cover topics such as physical layer; MAC and routing; mobility in networks; self-organization, virtualization and localization; cloud, virtualization and prototypage; security and fault tolerance in wireless mobile networks.
Ad Hoc Networks
Ad hoc networks, which include a variety of autonomous networks for specific purposes, promise a broad range of civilian, commercial, and military applications. These networks were originally envisioned as collections of autonomous mobile or stationary nodes that dynamically auto-configure themselves into a wireless network without relying on any existing network infrastructure or centralized administration. With the significant advances in the last decade, the concept of ad hoc networks now covers an even broader scope, referring to the many types of autonomous wireless networks designed and deployed for a specific task or function, such as wireless sensor networks, vehicular networks, home networks, and so on. In contrast to the traditional wireless networking paradigm, such networks are all characterized by sporadic connections, highly error-prone communications, distributed autonomous operation, and fragile multi-hop relay paths. The new wireless networking paradigm necessitates reexamination of many established concepts and protocols, and calls for developing a new understanding of fundamental problems such as interference, mobility, connectivity, capacity, and security, among others. While it is essential to advance theoretical research on fundamental and practical research on efficient policies, algorithms and protocols, it is also critical to develop useful applications, experimental prototypes, and real-world deployments to achieve an immediate impact on society for the success of this wireless networking paradigm.