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This paper evaluates the performance of the routing protocols HWMP, Babel and B.A.T.M.A.N. advanced for disaster networks. The evaluation is performed using a virtual environment so that the obtained results are similar to the expectations of a real world testbed. According to the specific requirements in disaster situations, three different scenario categories are implemented. The focus of the scenarios...
Exploiting resource reusability and low precision in neural networks is a promising approach to achieve energy efficient computational platforms. This research presents two generalizable approaches to reuse resources in feed-forward neural networks and demonstrated on extreme learning machines. In the first approach, coalescing, a single stack of neuronal units perform both feature extraction and...
The Low Voltage Power Line Communication (LVPLC) MAC protocols are an important influence factor to the network throughput. To solve the problem that the relatively low throughput due to the asymmetric PLC channel influence, we propose an improved adaptive p persistent CSMA protocol to optimize throughput for the finite loads in LVPLC accurate artificial cobweb network. This protocol reduces collision...
With the increasing complexity of networks, Software Defined Networks (SDNs) have been developed to help administrators configure and operate network services with controllers such as Beacon, OpenDaylight and Floodlight. These controllers provide a suitable platform for high bandwidth applications. In this paper, several SDN controllers are evaluated using different network topologies. Some controllers...
Ubiquitous in-network caching is one of the important aspects of the Information-Centric Networking (ICN), which has been a hot topic of ICN research. Many works have tried to propose better caching schemes to solve the drawbacks of the default en-route scheme, but most of them are insufficient to improve performance of entire network for just considering single layer optimization factor. Also considering...
The Vehicular Ad Hoc Networks (VANETs), as an important part of intelligent transportation systems (ITS), has been becoming a promising research area. Due to the high mobility of vehicles and intermittent connected topology resulting in the dramatically changing network topology, it is difficult to design a protocol including congestion control mechanism, which is helpful for a well network performance...
Multi-path allocation has been proposed as a simple way to achieve traffic protection in different networking domains. In this work dual-path allocation is proposed for Elastic Optical Networks (EON) assuming dynamic offered traffic, and its performance is quantified by simulation. Indeed, dual-path allocation is compared with partial dedicated path protection assuming different scenarios. In addition...
G-TCP represents novel transport protocol designed to be used by Next Generation Networks. It engages famous Fibonacci sequence to calculate congestion window size when the protocol operates in congestion avoidance phase. Modification of window decrease parameter is introduced in order to improve protocol behaviour in high and low speed networks.
In this paper, we investigate the effect of scale-free structure of a network topology on performance of CCN (Content-Centric Networking). Specifically, we generate multiple scale-free and non-scale-free network topologies by two synthetic network generation models (i.e., scale-free tree and generalized BA model). We compare the average delivery delay and throughput of CCN with scale-free and non-scale-free...
In this paper, we propose a modeling approach for a Content-Centric Networking (CCN) network by considering the dynamics of its transport layer protocol. Transport layer protocols for CCN have mainly been investigated through simulation experiments because CCN itself is a complicated network architecture compared with IP, and the complex interaction between CCN caching and the behavior of a transport...
The cognitive radio network is intelligent in adapting to the dynamic network environment, and it also provides a new way to solve the application limitation of nowadays MAC protocols. In this paper, an adaptive MAC protocol selection scheme based on machine learning is proposed for cognitive radio networks. This scheme can combine the respective advantages of the competitive protocols and non-competitive...
In vehicular ad hoc networks (VANETs), due to highly mobile and frequently changing topology, available resources and transmission opportunities are restricted. Transmitting frames efficiently within transmission opportunities is very important for system performance. Generally, there are many transmissions between many senders and receivers in a congested environment, which leads to network congestion...
In vehicular ad hoc networks (VANETs), due to highly mobile and frequently changing topology, available resources and transmission opportunities are restricted. Transmitting frames efficiently within transmission opportunities is very important for system performance. Generally, there are many transmissions between many senders and receivers in a congested environment, which leads to network congestion...
By decoupling the control plane from the data plane and providing programmability for network applications, software-defined network (SDN) is positioned to offer more efficient management, higher flexibility and better performance. Routing and resource allocation are two closely related applications in wireless networks. With close cooperation, better performance and lower complexity can be achieved...
Mobile backhauling, small cells and MmWave are key supportive technologies for 5G revolution. Mobile backhauling is the key enabler and also a showstopper for 5G small cells deployments. Scalability and reliability with high data rate and larger bandwidth are important factors to choose the small cell backhauling topology. In this paper, We consider the star and mesh topologies for the MmWave wireless...
In this paper, a distributed Dual-Ring Tree scatternet formation is proposed to generate a reliable topology for Bluetooth networks. To mitigate the formation complexity, each root distributively connects with its downstream roots with local topology instead of global nodes information, instructs them to connect together, and generates a desired dual-ring subnet via distributed computation with three...
In order to study the topology of the Earth-Mars relaying network with the Sun-Earth Lagrange points L4 and L5 used as the relaying nodes, 0–1 programming model on one-hop link and two-hop links was set up, the maximum throughput as the objective function, and total minimum throughput and accumulated connection time of each day as the constraint condition. A network topology is designed for one Earth-Mars...
Virtualized datacenter networks have been deployed in production platforms, e.g., Amazon VPC and VMware's NVP, to offer the flexibility of network management to enterprise-level clients. A common characteristic of these platforms is that they adopt software switches, such as Open vSwitch (OvS), instead of hardware switches to transfer data between VMs. Although group communication is common in enterprise...
We investigate the potential gains of Physical-Layer Network Coding (PLNC) in multi-hop wireless networks. Physical-Layer Network Coding was first introduced as a solution to increase the throughput of a two-way relay channel communication. Unlike most wireless communications techniques which try to avoid collisions, PLNC allows two simultaneous transmissions to a common receiver. Such transmitted...
High throughput data transfers across the Internet has become a challenge with deployment of data centers and cloud platforms. In this paper, we propose to utilize the cores of a router to build multiple abstractions of the underlying topology to parallelize end-to-end (e2e) streams for bulk data transfers. By abstracting a different graph for each core, we steer each core to calculate a different...
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