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Transportable nodes in a healthy and demanding network set-up of Mobile Adhoc Network (MANET) are self-governing with self-configurable potential due to high occurrence of topology alteration and changeable rescheduling of the network mechanism during data communication. Due to simplicity of set up, the energetic networking system in MANET is very victorious in conditions where it is complicated to...
Quality of Service for Mobile Adhoc Network is one of the pioneering research areas and variety of routing protocols is introduced. However, those routing protocols is not support multiple routes by assigning priority according to their desired data rates. In this paper, Priority Aware Adhoc On Demand Multipath Distance Vector protocol is proposed in order to enhance the Quality of Service for Mobile...
MANETs (Mobile Ad-Hoc Network) are temporary networks composed of many autonomous nodes. Service discovery is the technology of finding services matching one's needs in the network, which is crucial to the usability of MANETs. In this work we inherit the property of swarm intelligence based service discovery architecture for MANET and prove the efficiency of our system based on 3 factors: Congestion...
We propose to combine social trust derived from social networks with quality-of-service (QoS) trust derived from communication networks to obtain a composite trust metric as a basis for evaluating trust of mobile nodes in mobile ad hoc network (MANET) environments. We develop a novel model-based approach to identify the best protocol setting under which trust bias is minimized, that is, the peer-to-peer...
Recently mobile agents are being used in many applications for mobile ad hoc networks (MANET) for instance to discover and spread service information among the nodes in MANET. Here agents travel through the network, collecting the dynamically changing service information. However, reliability and availability issues are needed to be addressed while designing mobile agent based (service discovery)...
The Ad-hoc On-demand Distance Vector (AODV) is the most typical reactive routing protocol in MANET. It has been extensively studied through not only computer simulations but also implementations on real network. In this paper, an implementation of AODV routing protocol with multi-metric was presented. In the implementation, an Uppsala University routing protocol, AODV-UU was modified in order to apply...
Mobile Ad Hoc Networks (MANETs) have been an important research topic for the last years, playing a crucial role within the fast growing sector of mobile communications. At the same time, video applications over mobile devices are becoming widely used by nowadays mobile clients, where the quality in the transmission of such contents will determine the success of these applications in the future. Therefore,...
To cater for different conditions of QoS application, this paper proposes an adaptive cross-layer QoS model for mobile Ad Hoc networks according to their characteristics. Based on the traditional TCP/IP protocol stack, the cross-layer information exchange module and the adaptive decision-making module are added. The cross-layer information exchange module breaks the restriction of the original layer...
In mobile ad hoc networks (MANETs), service composition faces severe challenges such as the lack of central server, node mobility and wireless network failure, which are usually not considered in web service composition on Internet. This paper designs and implements an on-demand service composition protocol for MANETs with consideration of quality of service (QoS). Based on the well-known Dynamic...
As wireless communication gains popularity, significant research has been devoted to supporting realtime transmission with stringent Quality of Service (QoS) requirements for wireless applications. At the same time, a wireless hybrid network that integrates a mobile wireless ad hoc network (MANET) and a wireless infrastructure network has been proven to be a better alternative for the next generation...
Security in mobile ad hoc networks (MANET) Quality of Services routing has received increased attention in recent years. This paper proposes mechanism to obtain secure MANET QoS routing with regard to QoS considerations. Our goal is to present a new mechanism over on-demand multi-path routing protocol (AOMDV) that tackles the twin issues of reliability (protection against failures of multiple paths)...
Developing distributed applications for MANETs is a complex task due to the latter's bandwidth constrained nature. Further, in tactical MANETs, there is a need to prioritize traffic generated by distributed applications so that high priority traffic gets preferential access to the bandwidth constrained communication medium. Finally, applications must be designed to accommodate network bandwidth and...
Topology Control (TC) algorithms are generally applied to tactical network environments to create or maintain connectivity graphs with specific topological properties. In the context of this work, network topology defines the connectivity and link properties between nodes in the network. While protocols in the communications stack are traditionally designed to adapt to different traffic demands and...
The proliferation of networked appliances or dedicated function consumer devices with embedded processors and network connection capabilities is driving the virtual device concept, whereby such appliances can be controlled, monitored, managed, and extended beyond what they were initially designed to do. The dynamic and ad hoc nature of the discovery and composition of such devices and the services...
In this paper we address the Quality of Service (QoS) issues for applications such as voice and video that generate bursty traffic in mobile ad hoc networks while asynchronous power saving protocols are applied to wireless hosts. To provide QoS, we propose our new quorum-based power saving protocol called "consecutive quorum-based power saving (CQPS)". Within this torus-based protocol each...
Normal design practice is to decouple the design of applications using a network from the design of the network itself. Designers optimize network performance by only focusing on network transport layer mechanisms for robustness (connectivity), efficiency (throughput), & speed of service (latency). Applications offer loads to the network and rely on the QoS function in the network to prioritize...
The mobile ad hoc networks are self-organizing and does not require fixed infrastructure. In such networks, portable computing devices exchange information with each other requiring service discovery protocol. The proposed model automatically discovers quality-based services by organizing two integrated directory-based structure: backbone-based and cluster-based. This structure optimizes the flooding...
SIP (Session Initiation Protocol) is standardized by Internet Engineering Task Force (IETF) as a signaling and control functionality for multimedia services (video and audio). However, SIP is a text-based protocol with messages usually exceeding several hundred bytes in size, thus causing high call set-up latency over low bit-rate links. As a consequence, SIP suffers from undesirable delay which is...
An essential part of the provision of quality of service (QoS) is the reservation of bandwidth which is a scarce resource in a mobile ad hoc network. In this paper, we describe how to enhance the guarantees for bandwidth reservation in a Time Division Multiple Access (TDMA) based ad hoc network where the bandwidth is expressed in terms of the number of time slots. We devise a scheme for determining...
TCP, the facto standard used in today's Internet, has been found to perform poorly in Mobile Ad Hoc Networks (MANETs). This is exacerbated by contention with increasing UDP-based high priority multimedia traffic and the class differentiation introduced in current QoS protocols, which results into TCP starvation and increased spurious timeouts. In this paper, we propose a cross-layer TCP enhancement...
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