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The lack of available and practical analysis about some regular knowledge of mobility models has limit their applications to mobile ad hoc networks. As the mobility models have the great significance effects on the network performance, and meanwhile, existing in-depth researches are mostly based on the i.i.d. mobility model which is a way of globe move, the desire for the effective and reasonable...
Caching consistency in a MANET environment is an important issue as it is directly related to MANET connectivity. However, existing cooperative caching schemes mostly focus on delta and/or weak consistency. Recently, RPCC was proposed, but it cannot overcome traditional PUSH and PULL methods in terms of ensuring a strong consistency. In this paper, we propose three algorithms that are based on the...
With the rapid proliferation of network enabled hand devices Mobile Ad hoc network (MANET) is gaining tremendous popularity among the research community. Wirelessly connected mobile nodes are capable of providing a wide range of services such as GPS position indicator, nearest car parking information, word processing, internet connectivity etc. to other nodes in their vicinity. Service composition...
This paper focuses on the modification and improvement of Ad hoc On-demand Multipath Distance Vector (AOMDV) in Mobile Ad hoc NETwork (MANET). An improved algorithm is proposed, aiming to maximize the benefit of multipath algorithm to achieve better performance metrics in both packet loss ratio and average delay. The main contributions of the paper are: (1) Factors that could cause packet loss and...
In this paper, the suitability of the existing MANET routing protocols for VANETs has been evaluated. Even though a VANET is a subset of MANET, it has unique characteristics and message delivery requirements. VANETs are characterized by a very dynamic topology with partial infrastructure support, patterned mobility, mobile nodes with sufficient resources, intermittent connectivity and varied channel...
In mobile ad hoc network (MANET), congestion is one of the most important restrictions that deteriorate the performance of the whole network. Multipath routing can balance the load better than the single path routing in ad hoc networks, thereby reducing the congestion by dividing the traffic in several paths. This paper presents a new approach Multipath Load Balancing and Rate Based Congestion Control...
In this paper, we present the impact of mobility on our scheme called Location-based Routing with Adaptive Request Zone (LoRAReZ). In LoRAReZ, the size of expected zone and request zone are set adaptively based on the distance between the source node and destination node. We evaluate the impact of mobility on the performance of LoRAReZ in terms of packet delivery fraction, routing overhead, end-to-end...
The end-to-end packet delay in mobile ad hoc network depends on many influential variables such as path length from source to destination, average number of neighbours of intermediate hops, interference from other transmissions and medium access control protocol etc. Hence, accurate prediction of end-to-end packet delay is very difficult but necessary for Quality of Service (QoS) routing in Mobile...
A Mobile Ad Hoc Network (MANET) is a dynamic wireless network that can be formed without the need for any pre-existing infrastructure in which each node can act as a router. Due to bandwidth constraint and dynamic topology of mobile ad hoc networks, multipath supported routing is a very important research issue. This paper proposes a Network Coding-based on-demand Multipath Routing algorithm in MANET...
The system of post-earthquake information rapid report can make people survive the aftershock, therefore the alarm of seismograph nodes in the system should be transferred as soon as possible. In this paper, a priority node MAC protocol for mobile ad hoc networks is proposed. The priority node token ring approach is used for the transmission of low delay information. By the embedded Markov chain method,...
Of late, an easy access to the Web 2.0 applications through the hand-held mobile devices has provided the consumers with the opportunity to express opinions on their invoked services conveniently. These opinions, also known as the Internet word of mouth, often impact a potential consumer's service selection notably in service rich urban terrains. Access to these opinions involves tariffs since they...
The infrastructureless nature of communication in Mobile Ad hoc NETworks (MANET) pose many challenges to the researchers in terms of improving the reliability within the constraints of limited resources. Most of the performance measures and evaluation on different protocols in various network conditions proved the trustworthiness of the routing schemes as well as their limitations. In the present...
It is clearly that mobile ad-hoc networks (MANET) gained the interest of research and market place lastly, and that is due to its wide variety of applications. However, nodes mobility implies rapid topology changes, where a channel aware routing protocol is becoming a necessity to cope with this problem. Many channel aware routing metrics are proposed in the literature, however these routing metrics...
As Internet Protocol version 4 (IPv4) addresses deplete, Internet Protocol version 6 (IPv6) is introduced to alleviate the depletion with introduction of much needed functionality in security and so much more. Quality of Service (QoS) has been one of the aspects taken into consideration for improving network performance such as Packet Delivery Fraction (PDF), average End-to-end Delay and throughput...
MANET nodes use cooperative multi-hope packet forwarding technique hence they also perform the functionality of router. The individual nodes are constrained by resources such as battery life, limited network bandwidth and CPU cycles. To save its resources a node may deny to forward packets to others for saving the resources. This could lead to degradation of network performance. To mitigate this problem,...
With emerging trend in technology wireless networks allow user to travel from one location to another. Mobile Adhoc network (MANET) is one of the subareas of wireless network that dynamically form infrastructure less temporary network. MANET is a collection of intercommunicating mobile nodes forming a temporary network without any centralized administration. Due to the dynamic property of mobile nodes...
In this paper, we propose a mobility factor based path selection scheme in Mobile Ad-hoc Network (MANET). In MANET, Nodal mobility is one of the important issues to determine the potential capacity of ad hoc networks. Various mobility metrics have been proposed in the literature as measurement of topological changes in networks. All such metrics describe the link or path stability to allow adaptive...
Large scale disasters may destroy essential network infrastructures and cause network-based service failure over a large area. Communication between two nodes in a resilient network should continue without any support of network infrastructure. Delay and Disruption Tolerant Network (DTN) is the choice for network resilience because it is not dependent on any infrastructure and supports flexibility...
Ad hoc On-demand Distance Vector (AODV) is a routing schema for delivering messages in a connected Mobile Ad hoc Network (MANET). Connectivity between any sources to destination pair in the network exists when they are in radio range of each other. Local Repair is an important issue in routing protocol which is needed for minimizing flooding and performance improvement. Routes can be locally repaired...
The paper explores and compare the effect of different types of wormhole attacks on the performance of On demand routing protocols in Mobile Adhoc networks (MANET's). The evaluation has been done by studying and comparing End to End delay and throughput for all drop, all pass and threshold type of wormhole attacks.
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