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Detectable Opportunistic Forwarding (DOF) is a duplicate free opportunistic forwarding protocol for low duty cycled wireless sensor network. DOF enables senders to obtain the information of all potential forwarders through acknowledgement scheme deliver the data packets to the next hop forwarder. Based on admission control algorithm using link stability the duplicate packets can be removed. The experimental...
Previously, the distributed coding aware routing (DCAR) mechanism was proposed as a network coding aware routing protocol. However, DCAR is inefficient in handling realtime multimedia flows because it prefers nodes with longer queues in determining routes so that network coding opportunities can be increased. We propose a distributed coding-aware routing protocol that can maximize throughput and minimize...
A Wireless cellular Ad-hoc network is a collection of wireless mobile hosts that makes a momentary network with or without a centralized management or wired infrastructure. This is the era of growing smart phone technology people are dependent on the service provided by phone so in this scenario providing quality of service is essential task for service providers. Smart phone is movable device user...
In this paper, we propose and analyze a new defragmentation strategy for elastic optical networks (EON). Such strategy is based on the cyclical identification of the most fragmented optical link followed by later reallocation of the lighpaths that share it. Our computer simulation results indicate that the considered scheme offers a blocking probability reduction of up to 48% in comparison to the...
The energy consumption in Wireless Sensor Networks, WSN, need to be balanced in order to avoid early depletion of nodes. In this paper we use a common context to analyze a broad range of the energy balancing algorithms suggested in literature. In addition we suggest three new algorithms to complete the range. Altogether, nine different balancing techniques are analyzed. We focuses on networks running...
The light-hierarchy structure has been proved as the optimal solution with minimum cost for all-optical multicast routing with sparse splitting constraint. Edge Removal Light-Hierarchy (ERLH) algorithm is the most common algorithm to compute a light-hierarchy. However, it has poor link blocking and wavelength resources utilization performance. An improved Edge Removal Light-Hierarchy named Smart ERLH...
The broadcast storm problem is one of the most challenging issues in Mobile ad Hoc Networks (MANETs). However, it is still a challenging problem despite the great deal of related works and existing solutions. Dynamic Source Routing Protocol (DSR) is one of the well-known on-demand routing protocols that has been widely studied and analyzed over the past few years. However, there is a lack of methods...
With the integration of cores increasing, the on-chip-network (NoC) latency and the throughput are getting worse in traditional structures. This paper proposed a novel parameter-based on the hierarchical mesh interconnected NoC (PHMNoC) to improve the integration and performance. We use structural parameters and cross-layer threshold parameter to achieve scalability for different system size and balance...
While much effort has been put in the development of IP new address auto-configuration protocols for wireless ad-hoc networks, very little has been done in testing how different network conditions affect the performance of these protocols. Conditions such as network topology, mobility etc, have been found to have an effect on routing protocol performance. As a result more robust routing protocols...
Mobile Ad Hoc network (MANET) is a typical self-organizing network, in which the routing mechanism should adapt rapidly to the frequently changing network topology, which remains hot for research. The article described the features of Destination-Sequence Distance Vector (DSDV), Dynamic Source Routing (DSR), Ad Hoc On-Demand Distance Vector (AODV) and Ad Hoc On-Demand Multi-path Distance Vector (AOMDV),...
In this paper, we presents a routing protocol called Enhanced Hybrid Traffic-Aware Routing (EHTAR) to cope with the dynamics of Vehicular Ad Hoc Network (VANET) in urban environment. In EHTAR, an elected functional node called Junc-Tracker located at each junction is used to explore the real-time vehicular and network traffic information in each road segment. This information enables each Junc-Tracker...
This paper presents an analytical model for quantifying the reactive routing overhead in Mobile Ad-hoc Networks (MANETs). The overhead is characterized as a function of network mobility and traffic load. Also, a numerical model for determining the optimal cached route Time-To-Live is derived to minimize the overhead depending on network mobility and traffic load. The final result shows the minimum...
Quality of Service (QoS) provisioning in Wireless Sensor Networks (WSNs) presents an open research issue within the scientific community because the rapid development of microelectronics proliferates new applications for WSNs. These applications often require a connection of end-to-end delay and high reliability for various communication models. Within this scope, a special class of WSNs are query...
In this paper, we consider the impact of spectrum fragmentation along the optical single-/multi-path routing transmission on the efficiency of the elastic optical networks. Using O-OFDM multicarrier transmission as a promising technique makes it possible to choose just an adequate portion of available spectrum to satisfy the requested capacity. This involves focusing on the work to reduce the fragmentation...
There exist numerous routing protocols proposed to allow efficient routing in the network where the end-to-end paths are spontaneously unstable. Such networks are termed as Delay-tolerant-networks (DTNs). The existing famous routing protocols still remain important issues that need to be solved. For example, Epidemic quickly drains the resources of the network; PROPHET causes the unbalanced traffic...
A multi-rooted hierarchical tree topology has been widely adopted for many data center networks. It provides good utilization of resources as well as better performance, still fat tree Data Center Network has two limitations i.e traffic load balance and agility. This is because it is unable to support different traffic types efficiently and has no capacity to access all services by all servers. A...
Vehicular Ad-hoc Network (VANET) is an emerging technology which allows vehicles on the roads to communicate and exchange information with each other. Broadcast in VANET has gained a lot of attention because it is used extensively in many VANET applications. Recently, Cell Broadcast for streets (CB-S) [1], a cell based algorithm has been proposed and compared favorably to different class of broadcast...
Wireless Mesh Networks (WMN) are considered as robust architecture to provide reliable connectivity to fixed and mobile users. The redundant infrastructure provided by WMN can be efficiently utilized using multipath routing. However, the performance gain of multipath routing mainly depends on efficient path selection protocols. The omni-directional wireless medium, unstable link quality and mutual...
The Network-on-Chip (NoC) offers flexible and scalable communication architecture for many-core systems in the future. The routing algorithm dominates the system performance with more complicate communication and scaling. However, with the amount of processors increasing, congestion happened easily when most of the processors need to access the memory. In order to solve processor-memory accessing...
Routing mechanism is one of the many ways to optimize the performance of Zigbee network that used battery-powered device. Therefore, a variety of routing algorithms are developed to obtain the optimal performance. One of the examples is Power-Source Aware Routing (PSAR) algorithm. However, PSAR algorithm has problem that the reconfiguration of battery powered node from communication path is not always...
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