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Routing algorithms in Mobile Ad hoc Networks like DSR, AODV use flooding as the primary mechanism for discovery of routes in the network. In flooding, each node forwards flood packets to its neighbors so as to ensure that the packets reach the intended destination. Forwarding of redundant flood packets create extra overhead on network bandwidth. However, only a subset of nodes need to forward the...
S-parameter is commonly used for channel modeling and crosstalk modeling between channels in high speed digital design. However, for I/O buffer circuit designer, S-parameter models are not well received owing to all general frequency domain data is difficult to incorporate into a transient circuit simulation. S-parameter is a frequency domain data and is difficult to deal in a transient circuit simulation...
The Dragonfly topology provides low-diameter connectivity for high-performance computing with all-to-all global links at the inter-group level. Our traffic matrix characterization of various scientific applications shows consistent mismatch between the imbalanced group-to-group traffic and the uniform global bandwidth allocation of Dragonfly. Though adaptive routing has been proposed to utilize bandwidth...
Network Function Virtualization (NFV) is an emerging approach that has received attention from both academia and industry as a way to improve flexibility, efficiency, and manageability of networks. This flexibility can be leveraged to allow for a better optimization of Virtual Network Functions (VNFs), which can now be dynamically placed in the network to adapt efficiently to both network constraints...
Software Defined Network (SDN) has been envisioned as the next generation network infrastructure, which simplify network management by decoupling the control plane and data plane. It is becoming the leading technology behind many traffic engineering solutions, since it allows a central controller to globally plan the paths of the flows. However, Ternary Content Addressable Memory (TCAM), as a critical...
In this paper, we present an energy efficient routing algorithm for multi-layer femtocell networks. We consider a four-layered architecture that consists users, femtocells, relays, and macro base stations. The traffic to/from users passes through this architecture and is aggregated from/to the Internet through gateways in the relay layer. The traffic demand from users changes from time to time, so...
Today's computer networks rely on a wide spectrum of specialized middleboxes to improve their security and performance. Traditional middleboxes that are implemented by dedicated hardware are expensive and hard to manage. A promising technique of consolidated middleboxes – implementing traditional middleboxes in Virtual Machines (VMs) – offers economical yet simplified management of middleboxes in...
Software Defined Networking (SDN) has recently emerged as a new networking technology offering an unprecedented programmability that allows network operators to dynamically configure and manage their infrastructures. The main idea of SDN is to move the control plane into a central controller that is in charge of taking all routing decisions in the network. However, despite all the advantages offered...
Multi-path routing concept was largely exploited in wireless networks to provide benefits such as fault tolerance, load balancing, performance improvement in terms of latency, etc. In this paper, we propose a multi-path routing based protocol named MP-IMRR (Multi-path Intra-Mesh infrastructure Routing protocol) to improve our previously defined QoS based routing protocol for wireless mesh networks...
Routing algorithms for cognitive radio networks should consider various objectives and constraints. Constraint-based routing (CBR) algorithms select a route satisfying constraints that are either administrative-oriented (policy routing), or service-oriented (QoS routing). In cognitive radio networks, a primary user's interference constraint is the most important objective for the activities of secondary...
Three-dimensional (3D) integration is considered as a solution to overcome capacity, bandwidth, and performance limitations of memories. However, due to thermal challenges and cost issues, industry embraced 2.5D implementation for integrating die-stacked memories with large-scale designs, which is enabled by silicon interposer technology that integrates processors and multiple modules of 3D-stacked...
The Content Delivery Network (CDN) has become an important element in the Internet, which uses applicationlayer caches to improve user experience and reduce network/server load. However, CDNs face efficiency issues due to the following two reasons: 1) they are not aware of the network status, and 2) the underlying location-centric network (IP) does not understand content. At the same time, the Information-Centric...
In many networks there is a necessity to transmit data packets flows, the intensity of which exceeds the throughput of one channel SpaceWire, GigaSpaceWire, SpaceFibre. This flow can be a packet flow from a single source to a single destination, for example, from a camera to a monitor. Also, a packet flow can include packets from different sources to different destinations that goes via two neighboring...
SpaceWire is valuable because it facilitates the development of spacecraft subsystems such as payload instruments, mass memory, and onboard computers. On the other hand, it takes much time and effort for developers to configure an initiator of the SpaceWire network because they have to take account of the entire SpaceWire network in a spacecraft. As the target network becomes larger, the path addressing...
SpaceFibre [1][2][3] is the next generation of SpaceWire [4] on-board data-handling network technology for spaceflight operations, which runs over both electrical and fibre optic media. SpaceFibre has many benefits compared to SpaceWire, including much higher data-rates, integrated quality of service, fault recovery capabilities, multi-laning with graceful degradation and hot and cold redundancy,...
Open Shortest Path First (OSPF) is a popular routing protocol for the Internet services. OSPF causes network congestion if specific path becomes bottle neck links. However, OSPF can't avoid this congestion dynamically. In this paper, we propose the routing method using available bandwidth and degree. It is confirmed that the proposed method shows lower packet loss rate, shorter transmission time and...
Information Centric Networking (ICN) is a new kind of network architecture centered on content data. The ICN improves the efficiency of data transmission by the longest matching routing mechanism based on the content name prefix of the request interest packets, however, the multipath forwarding performance also resulted in the redundancy of the network content. The existing ICN forwarding strategy...
As the 3D stacking technology still faces several challenges, the 2.5D stacking technology gains better application prospects nowadays. With the silicon interposer, the 2.5D stacking can improve the bandwidth and capacity of the memory system. To satisfy the communication requirements of the integrated memory system, the free routing resources in the interposer should be explored to implement an additional...
Content Delivery Network (CDN) is an effective solution to offer reliable and efficient content provisioning across the Internet. In order to ensure the service experience, it is critical to adopt efficient routing and server selection techniques in CDN. However, traditional CDN is unable to possess global knowledge of whole network and therefore lacks the ability to dynamically control routing and...
Control of congestion in case of wireless sensor networks (WSNs) is a very crucial area of interest, where an increase in data transmission by sensor nodes results in a proportionately smaller increase, or even a reduction in throughput. Therefore, more sophisticated techniques are required to combat with network congestion. Various constrained resources of the WSN are to be taken into account while...
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