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In Wireless Mesh Networks (WMNs), supporting Quality of Service (QoS) to enable a rich portfolio of applications/real-time multimedia applications is foreseen to be vital for the success of next generation networking technologies. However, today's cutting edge standards are not perfectly equipped to cater to this task. These standards come with an inherent complexity and suffer from innate problems...
The recent emergence of OpenFlow, in the field of networks' control, marks a major evolution in networking. Indeed, Openflow comes up with a centralized control plane (real or virtual) and a remote control of the data plan, which enable network's evolution with unprecedented rapidity. This evolution, come, however, with new challenges and open issues. The data path portion still resides on networking...
In various networks the most critical task is finding of the best fit shortest path between specified source (S) and specified destination (D) and optimization of Quality of Service (QOS) parameters which include end-to-end delay, throughput, packet delivery ratio etc. Meta-heuristic based genetic approach is exploited in this paper to optimize QOS performance of various networks (wireless, ad-hoc,...
Wireless cellular network has recently emerged as one of the popular technologies for the next generation network due to the development of smart phone technologies which resulted in high mobility of user and achieving Quality of Service (QoS) for application like video conferencing, video streaming etc… requires an efficient multicast routing protocol which is one of the most key performance metrics...
We present in this paper a multi-layer scheme for QoS Management in MANETs. Our proposal is to combine multiple communication protocols of different layers, to provide an adapted QoS to a different traffic classes. Protocols are modified to improve their awareness of the quality of service, so that new extensions with QoS support are developed. We model QoS service at routing layer, via a QoS extension...
In Software Defined Networking (SDN) the network control plane is decoupled from the data plane and centralized at programmable controller. One of the advantages of centralized control is possibility to efficiently implement traffic engineering mechanisms, that are still lacking in today's backbone networks due to instability of distributed routing protocols and high management complexity. In this...
The goal of the Ship Data Network is to provide a broadband infrastructure as naval ships for convergence of real-time voice, data and video applications. Multicast of the data, voice and video from single source equipment to multiple equipment consumes less bandwidth. Unicast of data, voice, video will consume a lot of bandwidth of a network. So, a multicast philosophy and design that limits the...
Underwater sensor networks are gaining prominence in various applications of underwater monitoring and resource explorations. The minimum energy routing algorithms [2] are implemented in underwater oil resource explorations. The topologies already in use are wired where all sensor nodes behave as coordinator, except the PAN coordinator. This may increase the depletion of battery energy, and cost of...
Wireless Mesh Networking is a continuous growing technology that can be used used for several application scenarios, such as military tactical operations, etc. in next generation wireless networks. The IEEE 802.11s Standard defines the procedures that wireless nodes follow in order to interconnect and create a Wireless Local Area Network (WLAN) mesh network. It, also, defines the routing protocol...
In this paper, we propose a cross layer optimization technique for video transmission in multi-radio Wireless Mesh Networks (WMNs). WMNs are used as back haul to connect various networks such as Wi-Fi, Wi-MAX etc. to the internet. The presence of multiple radios in this networks increases the capacity but introduces an interference. Thus, designing a better routing metric to find optimal path is an...
One of the main advantages of utilizing flexible backhaul in future HetNets is that it can provide better user experience through flexible resource allocation. For this purpose, it is important to provide the required quality of service (QoS) in such networks. In this paper, we consider the problem of cross-layer radio resource management in HetNets with flexible backhaul which guarantees minimum...
Due to the development of novel Internet applications, Fault-tolerant needs to be improved and QoS (Quality of Service) routing capability is necessary in the network. Fault-tolerant QoS routing is one of the effective mechanisms to solve this problem. Considering the dynamic characteristic of network, we introduce the knowledge of fuzzy mathematics and probability theory to describe network state...
Admission control is an important component to control the acceptance of new calls without degrading the Quality of Service (QoS) of the existing calls in the wireless mesh network. Two types of calls are existing in the network which are the new and handoff calls, in order to increase the admission rate for both types of calls a multi-homing admission and mobility management algorithm is proposed,...
The topic of this paper is to propose a new network design algorithm which defines an efficient multi-path routing scheme in an MLPS network. Our goal is to offer QoS guarantees for delay and jitter which are considered as important performance metrics for interactive and real time services. To this end, we have formulated several nonlinear objective functions for determining network link utilization...
Given the evolution of wireless technologies, Wireless Mesh Networks (WMN) have appeared as an emerging low-cost solution to ensure last-mile connectivity to the Internet network. However, providing real-time and streaming applications, such as VoIP (Voice over IP) and VoD (Video on Demand), with a satisfying QoS level is considered as an important challenge within these networks. In this paper, we...
Wireless Sensors Networks (WSNs) are susceptible to many security threats, and because of communication, computation and delay constraints, traditional security mechanisms cannot be used. When trust system is established, the route from source node to destination node should consider nodes' trust on the road but not only QoS. In this paper, we propose a routing model in trust WSNs with respect to...
Achieving high Quality of Service (QoS) in routing is one of the major issues to be tackled in VANET. This is primarily due to the interference among vehicles and the objects present within the transmission environment. This also causes rapid degradation in transmitted signal and affects the overall system throughput. As a result, the system performance parameters such as delay, packet drop ratio...
In order to build a reliable traffic to overcome ever-changing scenarios with different QoS requirements for WSN-based M2M applications, a cognitive technology using the causality tree is proposed for the reliability maintenance of wireless sensor networks. Routing maintenance metrics are defined as basic initiatives for device maintenance. The metrics enable to guarantee quality of services for the...
With respect to the increase in demand of wireless sensor network in various real time Application. We present WISEN algorithm which is specially designed for WSN providing multiple communication architecture and mechanism to improve the Quality of service and routing performance. WISEN focuses on functions such as node synchronization, node localization for improving QoS. The design of WISEN algorithm...
Cognitive Radio is often promoted to be a promising solution for the spectrum scarcity problem. Hence, a lot of research activities in both the civilian and the military world focus on introducing cognitive radio technology into modern networks. Besides the obvious changes in the radio architecture (sensing capability, cognitive engine), this combination of technologies also poses new challenges to...
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