scholarly journals Modified QLRS-APM: A Proposal to Avoid Initiating Route Error Messages to Source in Mobile Ad Hoc Networks

2015 ◽  
Vol 62 (1) ◽  
pp. 59-64
Author(s):  
Rezvi Shahariar ◽  
Shahed Anwar

Existing local route repair schemes such as localized route repair (LRR), ad hoc on-demand distance vector-backup routing (AODV-BR), and witness-aided routing (WAR) can be incorporated with reactive routing protocols to repair route breakages on ongoing routes. All of these schemes have some problems in local route repairing such as long delay, excessive energy consumption etc. To mitigate these problems in existing local route repair schemes, quick local repair scheme using adaptive promiscuous mode (QLRS-APM) is proposed. QLRS-APM is a novel approach in local route repairing but sometimes generates unnecessarily route error to the source. This paper provides a solution by giving an extension on QLRS-APM to avoid initiating route error messages to the source and also at the same time reducing excessive energy consumption from the network. DOI: http://dx.doi.org/10.3329/dujs.v62i1.21963 Dhaka Univ. J. Sci. 62(1): 59-64, 2014 (January)

Mobile ad hoc networks (MANETs) are collection of nodes connected through wireless medium and do not require infrastructure for operation. Network Topology keeps on changing because mobility of nodes are high. Therefore, it is important for MANETs to provide excellent routing and security features. Since MANETs do not require any pre-existing infrastructure, they are extensively used in emergency and rescue and military applications. MANETs thus will form essentially an important part in wireless networks. In this paper, Ad hoc On-Demand Distance Vector (AODV) and Greedy Perimeter Stateless Routing (GPSR) routing protocol performance is compared with respect to Throughput and E2ED and observed that there is an improvement in throughput by 11% in case of GPSR. Simulation is performed using NS3.


2020 ◽  
Vol 17 (4) ◽  
pp. 1920-1924
Author(s):  
M. Vanitha ◽  
A. Rajiv ◽  
M. Sathya Priya

The main issue that occurs in battery powered applications in Mobile Ad Hoc networks (MANETs) is energy efficiency. Routing protocols are mainly based on energy related parameters which are used to extend the lifetime of networks. In most of the situations Shortest path routing protocols are used in MANETs which do not consider the energy awareness. Hence power failure of the nodes affect the life time of the network. In this paper we focus on Energy efficiency in Ad-hoc On Demand Distance Vector (AODV) and Dynamic Source Routing (DSR) protocol by using High Energy First (HEF) algorithm to overcome the shortcomings that occur in MANETs due to increase in node density. Simulations are performed using NS-2 and we have compared the performance of AODV and DSR using HEF with the performance of existing DSR and AODV to prove the maximization of lifetime of the network. Simulation results show that the proposed protocols with HEF are efficient than the existing protocols.


Author(s):  
M. Chekhar ◽  
K. Zine-Dine ◽  
M. Bakhouya ◽  
A. Aaroud ◽  
J. Gaber

Information broadcasting in wireless network is a necessary building block for cooperative operations. However, the broadcasting causes increases the routing overhead. This paper brings together an array of tools of our adaptive protocol for information broadcasting in MANETs. The proposed protocol in this paper named WAODV (WAIT-AODV). This new adaptive routing discovery protocol for MANETs, lets in nodes to pick out a fantastic motion: both to retransmit receiving request route request (RREQ) messages, to discard, or to wait earlier than making any decision, which dynamically confgures the routing discovery feature to decide a gorgeous motion through the usage of neighbors’ knowledge. Simulations have been conducted to show the effectiveness of the using of techniques adaptive protocol for information broadcasting RREQ packet when integrated into ad hoc on-demand distance vector (AODV) routing protocols for MANET (which is based on simple flooding).


Author(s):  
Raj Kamal Kapur ◽  
Sunil Kumar Khatri

Mobile ad hoc networks (MANETs) are ad hoc networks in which the nodes co-operatively route the traffic to the destination nodes which are beyond the wireless range of source nodes. The nodes in the network act as both end devices and routers. The routing mechanism in MANETs differentiates it from other wireless networks. Developing a routing protocol which is light on resources and efficient is a challenging task. Several routing protocols have been developed but the reactive routing protocols have found favor in most applications since these obtain the route when a node has data to send. This results in lower routing load and better conservation of meagre resources of the nodes. The two prominent reactive routing protocols for mobile ad hoc networks-Dynamic Source Routing (DSR) and Ad-hoc On-demand Distance Vector (AODV) routing. Both the protocols have similar on-demand behavior, but the differences in the protocol mechanism can lead to significant performance differentials. The performance differentials are analyzed using varying network load and mobility.


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