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The interconnection network has a large influence on total cost, application performance, energy consumption, and overall system efficiency of a supercomputer. Unfortunately, today's routing algorithms do not utilize this important resource most efficiently. We first demonstrate this by defining the dark fiber metric as a measure of unused resource in networks. To improve the utilization, we propose...
This paper presents a routing protocol called Load Distributed Mesh Routing (LDMR) that is developed for Wireless Mesh Network (WMN) with IEEE 802.11 standard. The LDMR protocol decides on the potential next hop nodes based on a quadrant and distance information. Then, the Next Hop Forwarding (NHF) decision is used to select the best next hop nodes based on Packet Success Rate (PSR) and maximum velocity...
End-to-end network latency has become an important issue for parallel application on large-scale high performance computing (HPC) systems. It has been reported that randomly-connected inter-switch networks can lower the end-to-end network latency. The trade-off is a large amount of routing information. For irregular networks, minimal routing is achieved by using routing tables for all destinations...
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...
In the past, several proposals to support fast handover in wireless mesh networks have been published. However, most handover extensions are only concerned with moving stations that are unaware of the used routing protocol and assume relatively stationary routing nodes. In this paper we propose an extension to the BATMAN routing protocol to support seamless handover of routing nodes in infrastructure...
In mobile ad-hoc networks (MANETs), nodes use hello messages to detect neighbor nodes and to maintain link connectivity. In a typical MANET routing, a node broadcasts hello messages at a fixed interval. However, a fixed hello interval causes a long delay of neighbor discovery (too long hello intervals) or a more bandwidth waste by unnecessary protocol overhead (too short hello intervals). In this...
After a disaster, it is unlikely to expect current terrestrial infrastructures to provide the coverage and the Quality of Service required by emergency operators. Currently, PPDR operators go towards a portable LTE infrastructure that provides an access network to field operators, backhauled by a wireless mesh network that can route traffic from and towards Internet through a satellite gateway. We...
Network-on-Chip (NoC) has been proposed as the communication paradigm for the Ultra Large-Scale Integration System-on-Chips. One of the key factors that determine the performance and the implementation cost of a NoC is the switching scheme. In this paper, we propose and implement a hybrid switching router based on the combination of wormhole and virtual cut-through switching schemes. The router is...
Multipath TCP (MPTCP) is based on TCP and MPTCP transmits data through multiple paths. It is well known that MPTCP shows better throughput than single path TCP (SPTCP). In this paper, we investigate the effect of router buffer size on throughput of MPTCP. We observe that MPTCP, which uses Lowest-RTT-First scheduling algorithm and Opportunistic Linked-Increases Algorithm (OLIA), may show worse throughput...
With the rapid development of multi-media services, the multi-media traffic flows make the load in wireless mesh network (WMN) increase sharply, which incurs network congestion. In the context of having multiple multicast sessions, the load-balance and interference-aware (LBIA) routing algorithm is proposed by considering the intra-flow interference, inter-flow interference and load balance. This...
We present a simulation-based study of the impacts of channel switching overhead on the performance of multicast in multi-channel multi-radio wireless mesh networks (MCMR WMNs). We study how channel switching overhead affects the performance metrics such as packet delivery ratio, throughput, end-to-end delay, and delay jitter of a multicast session.
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...
Vehicular ad-hoc network is growing area of research because of it's infrastructure and highly moving scenario. This network provide intelligence transporation system for users so that movement is going to be easy. In this paper we study about Vehicular network and it's application. In our proposed work we apply clustering approach on the basis of density and moveability, neighbor selection happen...
Recent advancement in wireless communications and electronics has enabled the development of low-cost sensor networks. The sensor networks can be used for various application areas (e.g., health, military, home). Wireless sensor networks consist of small nodes with sensing, computation, and wireless communications capabilities. Many routing, power management, and data dissemination protocols have...
Flying ad-hoc network is now growing area of research. There are few work done in this area. This whole paper going to stdy about flying network and its protocols. In our propose work we give decentalize cloud based approach in which cloud have data form sensor and base station and then all the base station and device or sensor connected to the each other through many to many connectivity.
Data gathering in an energy efficient and timely manner is the fundamental task of Wireless Sensor Network (WSN). The battery operated sensor nodes are of limited energy and it is necessary to preserve their battery power to elongate the lifetime of WSN. In Hierarchical Routing Protocol (HRP) some nodes transmit data to BS which is more energy intensive task while others are engaged in local communications...
In distributed OpenFlow controller networks, the network flow is managed by set of associated rules that are maintained by switches in their local Ternary Content Addressable Memory (TCAM) and rules are made by concerned controllers, which are local to domains. However, TACM is expensive and consumes high power. The switch inside the forwarding plane has limited TCAM space and is infeasible to maintain...
Packet buffers in Network on Chips (NoCs) are the most expensive resource for its power and area consumption. Most of the applications that run based on NoC platforms have different traffic patterns. The packets of these traffics are generally not uniformly distributed on routers buffers, hence, many buffers will be inefficiently utilized. This paper presents buffer sharing architectures for NoC routers,...
A Mobile Ad Hoc Network (MANET) is a group of wireless mobile nodes which dynamically form a network without any established infrastructure. The application is considered in an agro-based project and therefore, Routing protocols are mandatory to send and receive packets. In this paper, we have evaluated the most commonly used routing protocols in MANET and compared the performance of reactive routing...
Network on a chip(NOC) is a new kind of communication method on a chip, which is evolved from system on a chip(SOC), learning from computer network. It is an important component of the multi-core technology. The network on a chip provides a new way to communicate, and it performs better than the original system on a chip based on bus. As the size of system on a chip expanded, the number of nodes in...
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