Effective Congestion Avoidance Scheme for Mobile Ad Hoc Networks (original) (raw)

Design and Implementation of an Algorithm for Mitigating the Congestion in Mobile Ad Hoc Network

Wireless mobile ad-hoc network is a recent trend of communication network that work in dynamic behaviour with the help of multiple node cooperation. Because of the limited capacity of the bandwidth every node may transmit the packet at the same time due to this congestion arises which incur long delay and high packet loss which cause the performance degradation of the network. Number of researcher gives the idea for minimization and controlling the congestion in efficient manner but they cannot fulfill all aspect of network parameters. In this paper, the aim is to design a mechanism to control the congestion as well as gives improved performance with respect to every parameters of network under dynamic behaviour. In this paper apply the local route revamp and node reliability methodology for route establishment process and analogous time CTS/RTS mechanism are used to resolve the collision while multiple nodes are contend for the channels assignment. In the second methodology we minimize congestion with using the intermediate queue aware based data rate control technique so our network performance overall improve. The experimental analysis of proposed approach is done using various performance metrics such as Packet Delivery Ratio (PDR), Normalized Routing Load (NRL), throughput and average delay. The result taken in different scenario and analyzed the performance in all respect of network parameter, that conclude our proposed approach is more reliable than the existing AODV protocol which improves the PDR approximately 15%, throughput about 5-6%. The proposed approach also minimizes the network routing load and average delay than the existing approach.

MCCM: Multilevel Congestion Avoidance and Control Mechanism for Mobile Ad Hoc Networks

International Journal of Information Technology and Computer Science, 2014

Congestion in Mobile Ad Hoc Network causes packet loss, longer end-to-end data delivery delay which affects the overall performance of the network significantly. To ensure high throughput, the routing protocol should be congestion adaptive and should be capable of handling the congestion. In this research work, we propose a Multilevel Congestion avoidance and Control Mechanism (MCCM) that exploits both congestion avoidance and control mechanism to handle the congestion problem in an effective and efficient way. MCCM is capable of finding an energy efficient path during route discovery process, provide longer lifetime of any developed route. The efficient admission control and selective data packet delivery mechanism of MCCM jointly overcome the congestion problem at any node and thus, MCCM improves the network performance in term of packet delivery ratio, lower data delivery delay and high throughput. The result of performance evaluation section shows that, MCCM outperforms the existing routing protocols carried out in Network Simulator-2(NS-2).

11.A Study of Congestion Aware Adaptive Routing Protocols in MANET

Routing protocols for mobile ad hoc networks (MANETs) have been explored extensively in last few years. Much of this work is targeted at finding a feasible route from a source to a destination without considering current network traffic or application requirements. Routing may let a congestion happen which is detected by congestion control, but dealing with congestion in reactive manner results in longer delay, and unnecessary packet loss and requires significant overhead if a new route is needed. Routing should not be aware of, but also be adaptive to, network congestion. Adaptation to the congestion helps to increase both the effectiveness and efficiency of routing. These problems are solved by the congestion-aware routing protocols in certain degree. These protocols which are adaptive to congestion status of mobile ad-hoc network can greatly improve the network performance. In this paper, we present the survey of congestion adaptive routing protocols for mobile ad-hoc network. Finally, the future direction of congestion-aware routing protocols is described.

A Study of Congestion Aware Adaptive Routing Protocols in MANET

2012

Routing protocols for mobile ad hoc networks (MANETs) have been explored extensively in last few years. Much of this work is targeted at finding a feasible route from a source to a destination without considering current network traffic or application requirements. Routing may let a congestion happen which is detected by congestion control, but dealing with congestion in reactive manner results in longer delay, and unnecessary packet loss and requires significant overhead if a new route is needed. Routing should not be aware of, but also be adaptive to, network congestion. Adaptation to the congestion helps to increase both the effectiveness and efficiency of routing. These problems are solved by the congestion-aware routing protocols in certain degree. These protocols which are adaptive to congestion status of mobile ad-hoc network can greatly improve the network performance. In this paper, we present the survey of congestion adaptive routing protocols for mobile adhoc network. Finally, the future direction of congestion-aware routing protocols is described.

A Survey on Effective Improvement in Network Congestion Dominance Routing Protocol in MANET

International Journal of Innovative Research in Computer and Communication Engineering, 2016

A mobile ad hoc network (MANET) is determined as a network that has many free autonomous nodes i.e. that can move locations and configure itself. It is often composed of mobile devices that can arrange themselves in various ways using wireless connections such as a cellular or satellite transmission to connect to various networks and operate without strict top-down network or any centralized administration. There are various applications of MANET, In Commercial Sector: Ad hoc can be implemented in emergency, rescue operations for disaster relief efforts, e.g. in fire, flood, or earthquake. Local Level: e.g. conference or classroom. In mobile ad hoc network, congestion can take place between two intermediate nodes, Congestion occurs when bandwidth is insufficient and network data traffic exceeds capacity. This paper mainly studies and compares the performance of MANET routing protocols namely PSR, DSR, DSDV and AODV under various traffic loads with various maximum TCP congestion window size to improve congestion control in the routing. The metrics used to compare routing protocol performance are packet delivery ratio, average routing load, the average end-to-end time required with delay and average network throughput and mainly to overcome congestion situation and avoid packet loss in wireless networks.

Review on Congestion Avoidance Schemes in MANETS

— A mobile ad hoc network (MANET) is an infrastructure-less & self-configuring network of mobile devices. Congestion is the main factor in determining the quality of network. Congestion occurs when too much traffic is there in the network causes long delay, bandwidth degradation & overhead. So many mechanisms have been proposed to control the congestion in the network. Main aim of this paper is to study and analyse the various congestion control mechanisms by using various network parameters and to measure various performance matrices.

Congestion aware multi-path routing protocol for mobile ad-hoc networks

International Journal of Convergence Computing, 2015

We propose a congestion-based extension to existing multipath routing protocol AOMDV (CA-AOMDV). AOMDV is based on minimum number of hops count between source and destination nodes and is not suitable for real time applications because of its high end to end delay, jitter and packet loss. CA-AOMDV selects a least congested path instead of minimum number of hops between source and destination nodes. CA-AOMDV performs well under high load and varying mobility conditions. In CA-AOMDV, end to end delay is improved by 20%-80%, jitter is reduced by 25%-47%, routing overheads is reduced by 40%-70%. CA-AOMDV performs better than AOMDV in real time applications.

11.[64-73]A Study of Congestion Aware Adaptive Routing Protocols in MANET

Improvement of the mechanism of congestion avoidance in mobile networks

2016

Mobile ad hoc network congestion control is a significant problem. Standard mechanism for congestion control (TCP), the ability to run certain features of a wireless network, several mutations are not common. In particular, the enormous changes in the network topology and the joint nature of the wireless network. It also creates significant challenges in mobile ad hoc networks (MANET), density is one of the most important limitations that disrupts the function of the entire network, after multi-path routing can load balance in relation to the single-path routing in ad hoc networks better, so the traffic division multiple routs congestion is reduced. This study is a multipath load balancing and congestion control based on the speed of rate control mechanism to avoid congestion in the network provides communication flows. Given such a speed control method that is consistent is that the destination node copy speed is estimated at intermediate nodes and its reflection in the In the forw...

Effective Congestion Avoidance Scheme for Mobile Ad Hoc Networks (original) (raw)

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