Zexi Xu (11026491), Lei Zhuang (322549), Mengyang He (9180160) et al. · Figshare · 2023
<div><p>Virtualization and resource isolation techniques have enabled the efficient sharing of networked resources. How to control network resource allocation accurately and flexibly has gradually become a research hotspot due to the growth in user demands. Therefore, this paper presents a new edge-based virtual network embedding approach to studying this problem that employs a graph edit distance method to accurately control resource usage. In particular, to manage network resources efficiently, we restrict the use conditions of network resources and restrict the structure based on common substructure isomorphism and an improved spider monkey optimization algorithm is employed to prune redundant information from the substrate network. Experimental results showed that the proposed method achieves better performance than existing algorithms in terms of resource management capacity, including energy savings and the revenue-cost ratio.</p></div>
Cited by 0Open access
Fiach Reid · Elsevier eBooks · 2004
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Zexi Xu (11026491), Lei Zhuang (322549), Mengyang He (9180160) et al. · Figshare · 2023
<div><p>Virtualization and resource isolation techniques have enabled the efficient sharing of networked resources. How to control network resource allocation accurately and flexibly has gradually become a research hotspot due to the growth in user demands. Therefore, this paper presents a new edge-based virtual network embedding approach to studying this problem that employs a graph edit distance method to accurately control resource usage. In particular, to manage network resources efficiently, we restrict the use conditions of network resources and restrict the structure based on common substructure isomorphism and an improved spider monkey optimization algorithm is employed to prune redundant information from the substrate network. Experimental results showed that the proposed method achieves better performance than existing algorithms in terms of resource management capacity, including energy savings and the revenue-cost ratio.</p></div>
Cited by 0Open access
Wucherl Yoo, Alex Sim · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2014
With the increasing number of geographically distributed scientific collaborations and the scale of the data size growth, it has become more challenging for users to achieve the best possible network performance on a shared network. We have developed a forecast model to predict expected bandwidth utilization for high-bandwidth wide area network. The forecast model can improve the efficiency of resource utilization and scheduling data movements on high-bandwidth network to accommodate ever increasing data volume for large-scale scientific data applications. Univariate model is developed with STL and ARIMA on SNMP path utilization data. Compared with traditional approach such as Box-Jenkins methodology, our forecast model reduces computation time by 83.2percent. It also shows resilience against abrupt network usage change. The accuracy of the forecast model is within the standard deviation of the monitored measurements.
Cited by 7Open access
Min-Chia Chang, Been-Huang Liao · 2011
Rapid growth of bandwidth demand from smart mobile device usage forced telecom service providers to expand network infrastructure. Increasing investment in bandwidth naturally drives expenses up, but will not drive the revenue up accordingly due to the flat rate policy. Moreover, customer satisfaction declines due to congested networks caused by limited investment on network infrastructure. In this study, we adapted some core functions of NG-SDH (Next Generation-Synchronous Digital Hierarchy) network to develop a dynamic flow-based bandwidth management approach to improve bandwidth utilization. The proposed approach can increase utilization of existing NG-SDH networks effectively and serve more customers without sacrificing quality of service. In our experiment, we observed an increase of bandwidth utilization up to 78.3%. More service policies for customer can also be provided.
Cited by 5
White,Charles F. · Defense Technical Information Center (DTIC) · 1967
Central to the mechanization of the concepts in 'Maximum Utilization of FM Subcarrier Bandwidth,' Abel, J. E., and Stine, P.T., NRL Report 6449, January 6, 1967, (AD-646 972), is a seven-element RC network credited to the present author. The purpose of this supplement is to provide information on a five-element RC network suited to the particular application and to provide an errata for the original report.
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Brian S. Backer · 2003
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Rare & Special e-Zone (The Hong Kong University of Science and Technology) · 2007
Elsevier’s Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields.
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Journal of Xidian University · 2020
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Nawras Alzibdeh, Maen T. Alrashdan, Alaaeddin Almabhouh · 2023
Networks are getting larger and harder to manage due to the increase in the amount of users so it is necessary to use Network Traffic Analysis as a technique to monitor bandwidth utilization of users by gathering information such as the size of packets and latency, the goal is to have a clear view on how the network is operating and to manage the bandwidth accordingly to minimize the latency issues. This research analysis helps to understand the bandwidth utilization in network based upon the traffic and its efficiency across different methods of bandwidth allocation. With the network traffic analysis tool, the administrators will have no problem in delivering a high availability network with the best performance possible where the right amount of bandwidth will be distributed according to the user's bandwidth utilization which will eliminate any latency issues, data loss, or any network related issues in the existing network models.
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Zhengzhong Huang, Liangcai Cao · 2022
We proposed an extended field-of-view digital holographic microscope based on high bandwidth-utilization holographic multiplexing technology. It performs scan-free quantitative optical imaging for both amplitude and phase reconstruction without imposing any constraints on the sample.
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A.A.J. Geursen · Research Repository (Delft University of Technology) · 2012
The performance gap between processors and memory has grown larger and larger in the last years. With the emergence of the multicores this problem is additionally accelerated. Stalling row changes in the DRAM increase this gap even more, because the maximum theoretical bandwidth cannot be reached. The solution that is proposed in this thesis is to reorder the requests originated by multiple processing elements inside the memory controller. More data is accessed in burst mode and less stalling row changes are needed when the requests are reordered. The proposed memory controller has a modular setup and does not require any changes of the CPU or the executed software. A few reordering policies have been considered, but one has been implemented as it showed the best expected results in the preliminary analysis. The speed-up that is obtained by reordering requests varies, but is up to 1.58 for a 3D-FFT and 1.40 for a Conjugate Gradient (CG) workloads with just 64 entries in the sorting array. Power analysis on the DRAM and memory controller shows that the activation power of the DRAM is lowered up to 40% because of the reordering. The total energy that is necessary for each application is reduced with a maximum energy saving of 26.6% for the 3D-FFT and 13.2% for the CG application. This shows that the bandwidth utilization of the DRAM interface is increased while saving energy by using reordering of requests.
Cited by 0Open access
S. Vijay Bhanu, R. Chandrasekaran, Venkat Balakrishnan · arXiv (Cornell University) · 2010
Voice over Internet protocol (VoIP) is one of the most important applications for the IEEE 802.11 wireless local area networks (WLANs). For network planners who are deploying VoIP over WLANs, one of the important issues is the VoIP capacity. VoIP bandwidth consumption over a WAN is one of the most important factors to consider when building a VoIP infrastructure. Failure to account for VoIP bandwidth requirements will severely limit the reliability of a VoIP system and place a huge burden on the WAN infrastructure. Less bandwidth utilization is the key reasons for reduced number of channel accesses in VOIP. But in the QoS point of view the free bandwidth of atleast 1-5% will improve the voice quality. This proposal utilizes the maximum bandwidth by leaving 1-5% free bandwidth. A Bandwidth Data rate Moderation (BDM) algorithm has been proposed which correlates the data rate specified in IEEE802.11b with the free bandwidth. At each time BDM will calculate the bandwidth utilization before sending the packet to improve performance and voice quality of VoIP. The bandwidth calculation in BDM can be done by using Erlang and VOIP bandwidth calculator. Finally, ns2 experimental study shows the relationship between bandwidth utilization, free bandwidth and data rate. The paper concludes that marginal VoIP call rate has been increased by BDM algorithm.
Cited by 5Open access
Michael Düser, Polina Bayvel · 2001
Results describing the design trade-offs in bandwidth utilisation and wavelength re-use in optical burst-switched networks are reported. The effects of traffic statistics are analysed, and a set of bounds for the network design and lightpath set-up time for dynamic network control is derived. The round-trip time required for signalling is identified to be a key parameter in optimising the network performance.
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Muhammad Bilal, Muhammad Awais, Muhammad Irfan et al. · 2014
PON can be used by two technologies, which were developed APONs (ATM Passive Optical Networks) and EPONs (Ethernet Passive Optical Networks).With the development of services offered by the Internet, the “last mile ” bottleneck problems continue to increase day by day. Many algorithms were developed for making TDM EPON efficient like IPACT, Scheduling, Priority swapping etc. These all algorithms have problems like starvation, QoS, latency and channel underutilization. We focused the efficient bandwidth utilization in TDM EPON by managing time slots within ONUs and reducing latency, starvation and increasing quality of service. Our Fixed Innovative Bandwidth Algorithm is an intra-ONU bandwidth allocation algorithm, which is used to enhance the network performance by evaluating the parameters like channel underutilization, starvation, delay and Quality of Service. The issues which are lacking in the already made algorithms are being resolved with our proposed solution. The main problem is that the other solutions didn’t use the time slots which are guaranteed to their classes efficiently. In FIB Algorithm this issue is being resolved.
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Abhilasha · 2014
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Song Qian (5031221), Tianping Zhang (20041689), Siping Hu (8186913) · Figshare · 2025
Average bandwidth utilization and load comparison chart.
Cited by 0Open access
Bharat K. Chaudhari, Pallavi V. Kulkarni · 2013
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Hsien-Hsin S. Lee, Gary Tyson, Matthew Farrens · 2002
Modern high-performance processors utilize multi-level cache structures to help tolerate the increasing latency of main memory. Most of these caches employ either a writeback or a write-through strategy to deal with store operations. Write-through caches propagate data to more distant memory levels at the time each store occurs, which requires a very large bandwidth between the memory hierarchy levels. Writeback caches can significantly reduce the bandwidth requirements between caches and memory by marking cache lines as dirty when stores are processed and writing those lines to the memory system only when that dirty line is evicted. Unfortunately, for applications that experience significant numbers of cache misses due to streaming data, writeback cache designs can degrade overall system performance by clustering bus activity when dirty lines contend with data being fetched into the cache. In this paper we present a new technique called Eager Writeback, which re-distributes and balances memory traffic by writing and "cleaning" dirty cache lines prior to their eviction. Eager Writeback can be viewed as a compromise between write-through and writeback policies, in which dirty lines are written later than write-through, but prior to writeback. We will show that this approach can reduce the large number of writes seen in a write-through design, while avoiding the performance degradation caused by clustering bus traffic in a writeback approach.
Cited by 22
Justin Matthew Wren Lewis · IEEE Communications Magazine · 1989
DECnet Area 2, a local area network (LAN) that is part of Digital Equipment's worldwide Easynet, is described. It is comprised of several baseband Ethernet segments connected by local Ethernet repeaters and standard LAN Bridge 100 devices, which extend a LAN. Measurements carried out to determine whether the capacity of the Ethernet had been reached or exceeded are discussed. The measurements showed that the bandwidth was not reached or exceeded. They also showed that the measured traffic load and the numbers of devices connected to the Ethernet did not pose traffic throughput problems to the user community. In addition, it was found that a larger LAN configuration could be achieved by using Ethernet bridges and taking advantage of address filtering, which distributes and thus reduces traffic loads on specific segments.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Cited by 3