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Sleep mechanism(SM) is often used to design green network, however, sleep mechanism must take data loss, network performance and other situations into consideration. Due to hierarchical and centralized control, SDN makes it simple to deploy new applications. SDN is becoming more and more popular in new network applications. In this paper, a new implementation of SM based on SDN is proposed, the SM...
Software-Defined Networking (SDN) is a new paradigm that is attracting significant attention from both academy and industry. In recent years, increasing research efforts have addressed the conception of programming interfaces—northbound APIs—which allow business-applications to properly communicate with SDN controllers and program the network. However, most of current SDN controllers still offer low-level...
In order to find out the tradeoff between recovery time and resource overhead when a link failure occurs, we propose a software-defined based fast restoration scheme for elastic optical datacenter networks, called precomputation based restoration path (P-RP). By extending the controller functionality and OpenFlow protocol in software defined networking (SDN) technology, we establish a novel elastic...
NVMe is emerging as the standard protocol for communicating with high performance storage devices over the PCIe interface, independent of the underlying storage technology. Being a relatively new standard, there is a distinct lack of tools that can help in evaluating contemporary and future storage solutions built on NVMe. In this paper, we provide the design and analysis of FlexDrive, a software...
While addressing cache coherency in shared memory multiprocessors, traditional snoopy based pure write update (PWU) and pure write invalidate (PWI) protocols have many issues including low bandwidth, high memory latency, and large cache miss ratio. This paper presents a directory based hybrid cache coherence protocol to better address the cache coherency and improve performance of shared memory multiprocessors...
The video, voice, multimedia next-generation applications are using real-time data transmissions. Therefore, taking into account that all these applications are transmitted “over IP”, variable bandwidth has to be provided for specific situations in order to prevent network congestion. The active equipments meet these requirements and provide the network management. However, how will it be if the network...
Data networks require a high degree of performance and reliability as mission-critical IoT deployments increasingly depend on them. Although performance and fault tolerance can be individually addressed at all levels of the networking stack, few solutions tackle these challenges in an elegant and scalable manner. We propose a redundant array of independent network links (RAIL), adapted from RAID,...
Tactical military networks present a challenging environment for the delivery of information services. A tactical network must support a dynamically changing force in the face of physical and electronic threats and where bandwidth is scarce. The network manager faces an almost impossible task to deliver vital information with the required quality of service in the face of changing operational priorities...
The wireless sensor networks are highly dynamic in nature and their storage, processing and energy resources are limited. For these conditions routing protocols are required to maintain the network with reliable and secure communication. Lot of protocols are designed for routing but none of the protocol is proposed security as a main task. We advocate that Software Defined Network (SDN) enabled SPIN...
Complexity in the real-time embedded software domain has been growing rapidly. The component-based software development approach facilitates the development process of such software systems by dividing a complex system into a number of simpler components. Resource reservation techniques have been widely used for providing resources to real-time software components. In this paper we target real-time...
Cloud centric environments fueled by Ethernet dominant networking increasingly use iSCSI as a prevalent storage networking protocol among highly distributed and interconnected servers and storage devices. Numerous advances such as faster multi-core CPUs, hardware offloading engines, higher bandwidth networking and faster storage devices mandate a re-evaluation of iSCSI implementations and performance...
In this paper, we propose a parallel re-programming method that can reduce the time to complete software updates of in-vehicle electronic control units. The proposed method has been designed to operate in an in-vehicle gateway that integrates different types of in-vehicle networks including controller area network, FlexRay, and Ethernet to provide seamless communication between heterogeneous networks...
This Paper presents a telco's perspectives and experiences to design and implement open and flexible architecture for Transport SDN (T-SDN). We believe that this could be realized by adopting open source based SDN controllers because they already have widely accepted and referenced architecture with a rich ecosystem. Moreover, we could have further benefits from open source such as reducing time to...
This paper presents a Stackelberg game between the tracker and peer of a torrent in a BitTorrent community which incentivizes cooperation amongst peers. We propose a change in the allocation of peers to a peer by tracker and suggest modifications in the allocation algorithm rather than keeping it completely random. By this change the role of tracker in a BitTorrent community is promoted from just...
The fast evolution of multicore systems, combined with the need of sharing the same platform for independently developed software, demands for new methodologies and algorithms that allow resource partitioning, while guaranteeing the isolation of concurrent applications. Unfortunately, a major problem that can break the isolation property of concurrent partitions is resource sharing. Although a number...
In this paper, we developed an application that can be used to monitor network packets, bandwidth, Protocol Packets from the network and easily can monitor the system networking performance. The system uses automated software engineering approach, especially unit test in Java. The system can be used for monitoring the TCP, UDP, ARP, packets, when the system is connected with the internet. Domain IP...
Software defined networks (SDN) are an emerging technology that is being increasingly adopted by various network operators. These technologies provide new services and powerful analytics that help to transform the network and unfasten its intelligence to serve today's business demands. This paper briefs about the need for change in the current networking technology and explores the role of Open Flow...
New technologies and services provided by Internet Service Providers (M2M, clouds, online-games, HD-video), lead to the constant growth of traffic per a single subscriber. This forces operators to increase network capacity even for processing traffic generated by existing subscribers. Under the circumstances of an overloaded radio network (common situation in large cities) subscribers often don't...
The use of Modbus protocol for industrial control and monitoring applications over multipoint RS-485 networks may be constrained by several factors, as the number of messages exchanged over the network and their respective bandwidth usage. Some applications need an evaluation of the response times of a set of messages to ensure that the set is schedulable, according to the application requirements,...
When embedded devices are connected by USB bus, it is convenient to use Ethernet emulation model which can be used for conventional TCP/IP network. USB Communication Data Class (CDC) defines Ethernet over USB protocol which can be implemented by emulation protocol software, but when it is used with real system, it shows performance degradation problems especially for small size latency critical data...
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