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This paper focus on the routing, modulation level and spectrum allocation (RMLSA) problem in the next generation datacentre networks, which own the advantages of both Elastic Optical Networks (EON) and Software Defined Networking (SDN). We proposes an Integer Linear Programming (ILP) model for this problem. Simulation results show the ILP model achieves an outstanding load balancing performance.
Routing and wavelength assignment is the important problem to multi-domain ASON. In order to solve this problem, a new impairment-aware routing algorithm based on colored graph model (IRACM) is proposed in this paper. In the proposed algorithm, different ant colonies different and different mechanisms of pheromone control, and the local search and global search are used. The analysis shows that the...
Transmission of data in infrastructureless mobile ad hoc network (MANET) is performed by cooperation among nodes which requires devising efficient routing schemes. When there is a possibility of non-cooperative and selfish behaviors of nodes in the network, in order to improve the performance, both trust and energy consumption associated with intermediate nodes should be jointly taken into account...
Routing and Wavelength Assignment (RWA) is the most concern in wavelength routed optical networks. This paper proposes a novel dynamic RWA scheme inspired by the idea of binary quadratic programming (BQP) formulation for the static RWA problem. Subsequently, a heuristic algorithm namely QP routing and wavelength assignment (QP-RWA) is proposed. In this method, links wavelength occupancy information...
Wireless Mesh Networks (WMNs) are new emerging multi-hop wireless networks that offer low-cost high-bandwidth community wireless services. Much work has been done so far in order to enhance the performance of these networks. In this paper, by using the optimization framework provided in [1], we study the impact of using some advanced wireless communication techniques on the performance improvement...
A Midimew connected Mesh Network (MMN) is a MInimal DIstance MEsh with Wrap-around links network of multiple basic modules, in which the basic modules are 2D-mesh networks that are hierarchically interconnected for higher-level networks. In this paper, we present the architecture of the MMN, addressing of node, routing of message, and evaluate the static network performance of MMN, TESH, mesh, and...
Optimizing the three most important network performance parameters i.e. Delivery probability, Overhead ratio, and Delay is challenging in Delay Tolerant Networks (DTN) due to high occurrences of network partitioning in these networks. Owing to the partitioning nature efficient routing or dissemination of messages is important in DTN. In this paper, we focused to improve the spray phase of Binary Spray...
In this paper, we propose an effective data communication scheme for wireless sensor networks. The data communication approach makes efficient use of data compression to achieve energy efficiency. The main contribution of the proposed approach is, it makes use of the simple but efficient representation of value pairs to attain the compression. It is also novelty of our approach that, proposed scheme...
We study joint routing, scheduling, and physical network coding (PNC) in fixed wireless multihop networks under a physical interference model. The objective is to quantify the throughput gain provided by PNC in wireless mesh networks. We formulate a cross-layer optimization framework to determine the optimal max-min throughput of the flows and the optimal configuration of the routing and scheduling...
Delay Tolerant Networks (DTNs) are intermittently connected mobile networks, in which a fully connected path from source to destination does not exist. Therefore in these networks, message delivery relies on opportunistic routing where nodes use store-carry-and-forward paradigm to route the messages. However, effective forwarding based on a limited knowledge of contact behavior of nodes is challenging...
Cognitive radio is the next-generation wireless communication network that improves the efficiency of the radio spectrum through exploitation of underutilized licensed spectrum (or white spaces). This paper applies a reinforcement learning-based Trust and Reputation Management (TRM) scheme to cluster-based routing and shows network performance enhancement, including throughput and rewards. Generally...
Wireless sensor networks (WSN) continuously enhance processing capabilities and miniaturization. However, there exists a design gap to energy and bandwidth availability. Especially battery technology cannot keep pace with demands of novel versatile services. A common approach for conserving channel capacity and energy is optimizing power-aware routing and different kind of duty cycling (DC) and harvesting...
Ad hoc networks consist of a set of identical nodes that move freely and independently and communicate with other node via wireless links. Such networks may be logically represented as a set of clusters by grouping together nodes that are in close proximity with one another. Clusterheads form a virtual backbone and may be used to route packets for nodes in their cluster. In this paper, a routing scheme...
Routing in Wireless Mesh Algorithm is concerned with finding “good” source destination paths and has been an active research area since many years. Much of the work is focused on the improvement of global resources, or on the performance of individual transfers. Either case, the routing problem can be casted as a multi-objective with objectives such as load-balancing, end-to-end delay, and path capacity...
Low Earth Orbit (LEO) satellite networks are expected to provide a variety of multimedia applications. In order to satisfy different QoS requirements and optimize utilization of network resources, a novel traffic classification routing algorithm (TCR) is proposed. The key technique of TCR is investigating the traffic classification link-cost metrics (TCM) for different traffic classes, which selects...
This paper presents considerations of using wireless sensor networks for monitoring conditions within wind farms, taking into considerations the specific of such applications. In these scenarios, which are intended to cover a lot of ground or even operate in difficult radio environments with strong attenuation, the simple and direct communication between source and destination is not always possible,...
This paper presents the study of an access point (AP) deployment strategy which aims to reduce the energy expenditure of ubiquitous motorway network coverage while ensuring Quality of Service (QoS) requirements are maintained at acceptable levels. For this reason, we, in this paper, study the consumption of energy in a scenario where three operational APs are deployed on a motorway with and without...
As the distributed multi-domain DWDM optical network has been advocated to be the next generation optical network, there is a pressing need to address the inter-domain RWA (Routing and wavelength assignment) problem. Thus, we propose a set of new inter-domain RWA schemes, including a MLP (Most leisure path) routing strategy based on the Hybrid abstraction and a ID-MU (Inter-domain most used) wavelength...
While there has been many studies on the efficient design of p-cycles focusing on optimizing their spare capacity efficiency, few of them consider such a design under the wavelength continuity assumption, i.e., no wavelength converter at any node. Consequently, few authors look at the routing and wavelength assignment in the context of p-cycles, where p-cycles have to be assigned the same wavelength...
We propose a combined length-infix pipelined search (CLIPS) architecture for high-performance IP lookup on FPGA. By performing binary search in prefix length, CLIPS can find the longest prefix match in (log L-c) phases, where L is the IP address length (32 for IPv4) and c>;0 is a small design constant (c=2 in our prototype design). Each CLIPS phase matches one or more input infixes of the same...
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