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In this paper, we present a novel QoS (quality of service) multicast routing protocol (QMRP) for partially mobile wireless TDMA (time division multiple access) networks. This protocol has been inspired by the typical requirements of industrial networked control systems, i.e., systems exhibiting real-time behavior and therefore requiring predictable communication bandwidths and transfer delays. QMRP...
Traffic Flow Confidentiality (TFC) aims to prevent analysis of traffic flows. According to the principles of Protected Core Networking (PCN), TFC should be provided as a service in the network and not implemented by the users. Since provisioning of TFC in the entire network might not be practical or economical feasible, solutions are required for forwarding traffic on paths where sufficient TFC is...
One from the factors that complicate control processes in Wireless Mesh Networks is related to interference phenomenon. Particularly it affects resource management at link layer (including time slot allocation and routing afterwards). A rational way to simplify the process is hierarchical control which requires clustering and aggregation of topology information. In the paper we proposed interference-based...
Air and space resiliency requires efficient and functioning avionics using a robust and scalable architecture. In satellite communication (SATCOM) networks, each satellite can be treated as a topological node, such that the overall constellation can be represented by a graph matrix (i.e., graph Laplacian or adjacency matrix), and the quality of service (QoS) of each inter-satellite link (ISL) captures...
IEEE 802.11s Wireless Mesh Networks (WMNs) constitute a cost-effective solution for broadband ubiquitous Internet access. The IEEE 802.11s standard employs the Enhanced Distributed Channel Access (EDCA) as the Medium Access Control (MAC) mechanism in order to provide differentiated channel access and Quality of Service (QoS) guarantees for multimedia flows. Under EDCA, traffic is distinguished into...
The paper describes the testbed to determine the effectiveness of an approach to build network storage using Software-Defined networks (SDN) OpenFlow. It is assumed that main protocol to SAN is iSCSI over local area network. Prototyping tools for managing network resources and data flows on the basis of SDN and testing environments based on Free and Open Source software. We describe experiments with...
With the deepening of wireless sensor network (WSN) applied in various services in smart substation, high data rate and quality of service has become the new research focus. For smart substation equipment condition monitoring, the paper designs clustered smart substation equipment monitoring network based on wireless sensor network. Reference to Zigbee protocol and IEC 61850 relevant regulations,...
This paper focuses on routing algorithm with two quality of service constraints: bandwidth and delay. The former is a concave constraint while the later is additive. The goal of algorithm is to accept as many routing requests as possible. Therefore, the proposed algorithm reactively calculates link weights based on link bandwidths. Then, a heuristic idea is applied to Dijkstra in order to find a path...
This paper introduces a novel distributed topology management scheme for 5G ultra-small cell networks (SCNs). The scheme is designed to switch as many base stations as possible to sleep mode without significantly degrading the Quality of Service (QoS). This is fulfilled through traffic perception by each base station in its dynamically changing monitoring area. Simulation results show that the proposed...
This paper investigates dynamic topology management functionalities in the flexible deployment of a hybrid aerial-terrestrial cognitive cellular network for public safety in unexpected or temporary events. An evolutionary roll out and roll back of the network architecture in the disaster relief scenario is proposed under the assistant of topology management algorithm, in order to manage the number,...
MANETs (Mobile Ad hoc Networks) are self organized networks with mobile and collaborating nodes without any pre-established infrastructure. Because of these characteristics, securing MANETs constitute a hard and challenging task. Consequently, new mechanisms may be of interest to secure such networks. To this end, we have found that trust management can be a support for MANET security. In fact, the...
Though the decades of great success the Internet has experienced, it still confronts with many challenges to achieve QoS of various business types. A consensus has been reached that resource allocation presents a tremendously status in such a network bandwidth poor settings. In this paper, we bring the knapsack problem idea into reconfigurable network architecture (RNA), which is proposed with the...
The operation of modern energy transmission grids results from the integration of power and ICT systems for monitoring and control purposes. The present paper performs an analysis of this interdependency, laying emphasis on the rise of anomalies in the data delivery process due to power perturbations, and studying how this consequent ICT malfunction can contribute back to the cascading of the initial...
Wireless Mesh Networks (WMNs) are becoming increasingly popular mostly due to their ease of deployment. One of the main drawbacks of these networks is that they suffer with respect to Quality of Service (QoS) provisioning to their clients. Equipping wireless mesh nodes with multiple radios in order to increase the available network bandwidth has become a common practice nowadays due to the low cost...
The Low Extra Delay Background Transport (LEDBAT) protocol is a recently standardized protocol that aims to offer a scavenger service (i.e. the goal is to exploit the remaining and unused capacity of a link). LEDBAT is a delay-based protocol mainly defined by two parameters: a target queuing delay and a gain. The RFC 6817 provides guidelines to configure both parameters that strongly impact on the...
To study Internet's routing behavior on the granularity of Autonomous Systems (ASes), one needs to understand inter-domain routing policy. Routing policy changes over time, and may cause route oscillation, network congestion, and other problems. However, there are few works on routing policy changes and their impact on BGP's routing behaviors. In this paper, we model inter-domain routing policy as...
Content delivery network (CDN) with a high quality-of-service (QoS) requirement deals with three challenging problems: 1) a cache server deployment problem to determine where to locate cache servers, 2) a request routing problem to settle which cache server serves a user request, and 3) a content replication problem to decide which content is stored in a cache server. Cooperation among cache servers...
In this paper, we'll try to discuss the cooperation of nodes representing one of the important factors in improving the quality of service (QoS) and security in mobile ad hoc networks (MANETs). The routing protocols for MANETs are designed based on the assumption that all participating nodes are fully cooperative. In such networks, the Selfish behaviour is among the big challenges and can lead to...
Now a days as compare to power resources power demand grows and energy cost is also increasing at constant rate. To reduce power consumption in entire network infrastructure lots of research developed. In this approach the solution to save energy is explain. In this approach Energy Saving IP Routing strategy is define. ESIR strategy work with Open Shortest Path First protocol. This strategy is useful...
Nodes in ad hoc networks rely on batteries with limited capacity. As result, this imposes constraints on the network lifetime. In order to maximize the network lifetime, routing protocols should deliver traffic in a way that the energy consumption is minimized. This paper discusses the problem of energy saving in QoS multicast routing of ad hoc wireless networks. Our goal is to find a network topology...
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