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2014 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)最新文献

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Bringing the cloud to the edge 把云带到边缘
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849256
Hyunseok Chang, A. Hari, S. Mukherjee, T. Lakshman
Edge services become increasingly important as the Internet transforms into an Internet of Things (IoT). Edge services require bounded latency, bandwidth reduction between the edge and the core, service resiliency with graceful degradation, and access to resources visible only inside the NATed and secured edge networks. While the data center based cloud excels at providing general purpose computation/storage at scale, it is not suitable for edge services. We present a new model for cloud computing, which we call the Edge Cloud, that addresses edge computing specific issues by augmenting the traditional data center cloud model with service nodes placed at the network edges. We describe the architecture of the Edge Cloud and its implementation as an overlay hybrid cloud using the industry standard OpenStack cloud management framework. We demonstrate the advantages garnered by two new classes of applications enabled by the Edge Cloud - a highly accurate indoor localization that saves on latency, and a scalable and resilient video monitoring that saves on bandwidth.
随着互联网向物联网(IoT)的转变,边缘服务变得越来越重要。边缘服务需要有限的延迟、边缘和核心之间的带宽减少、服务弹性和优雅的降级,以及访问仅在NATed和受保护的边缘网络内可见的资源。虽然基于数据中心的云在提供大规模的通用计算/存储方面表现出色,但它不适合边缘服务。我们提出了一种新的云计算模型,我们称之为边缘云,它通过将服务节点放置在网络边缘来增强传统数据中心云模型,从而解决边缘计算的特定问题。我们将边缘云的架构及其实现描述为使用行业标准OpenStack云管理框架的覆盖混合云。我们展示了由Edge Cloud支持的两类新应用程序所获得的优势-节省延迟的高度精确的室内定位,以及节省带宽的可扩展和弹性视频监控。
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引用次数: 165
Random sensing order in cognitive radio systems: Performance evaluation and optimization 认知无线电系统中的随机感知顺序:性能评估与优化
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849225
H. S. Ghadikolaei, C. Fischione
Developing an efficient spectrum access policy enables cognitive radios to dramatically increase spectrum utilization while assuring predetermined quality of service levels for the primary users. In this abstract, modeling, performance evaluation, and optimization of a distributed secondary network with random sensing order policy are studied. Specifically, the secondary users create a random order of the available channels upon primary users return, and then find an optimal transmission opportunity in a distributed manner. After modeling the behavior of the SUs by a Markov chain, the average throughputs of the secondary users and interference level among the secondary and primary users are evaluated. Then, a maximization of the secondary network performance in terms of throughput while keeping under control the average interference is proposed. A simple and practical adaptive algorithm is developed to optimize the network. Interestingly, the proposed algorithm follows the variations of the wireless channels in non-stationary conditions and outperforms even static brute force optimization, while demanding few computations. Finally, numerical results are provided to demonstrate the efficiencies of the proposed schemes. It is shown that fully distributed algorithms can achieve substantial performance improvements in cognitive radio networks without the need of centralized management or message passing among the users.
制定有效的频谱接入策略使认知无线电能够在保证主要用户预定的服务质量水平的同时大幅提高频谱利用率。本文研究了一种随机感知顺序策略的分布式二次网络的建模、性能评估和优化问题。具体来说,辅助用户在主用户返回时创建可用信道的随机顺序,然后以分布式方式找到最优传输机会。通过马尔可夫链对系统的行为进行建模,评估了辅助用户的平均吞吐量和辅助用户与主用户之间的干扰程度。然后,提出了在控制平均干扰的情况下,从吞吐量方面最大化辅助网络性能的方法。提出了一种简单实用的自适应网络优化算法。有趣的是,该算法遵循非平稳条件下无线信道的变化,甚至优于静态蛮力优化,同时需要很少的计算量。最后,给出了数值结果来验证所提方案的有效性。研究表明,在认知无线网络中,完全分布式算法可以在不需要集中管理或在用户之间传递消息的情况下实现显著的性能改进。
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引用次数: 0
Social interaction based video recommendation: Recommending YouTube videos to facebook users 基于社交互动的视频推荐:向facebook用户推荐YouTube视频
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849175
Bin Nie, Honggang Zhang, Yong Liu
Online videos, e.g., YouTube videos, are important topics for social interactions among users of online social networking sites (OSN), e.g., Facebook. This opens up the possibility of exploiting video-related user social interaction information for better video recommendation. Towards this goal, we conduct a case study of recommending YouTube videos to Facebook users based on their social interactions. We first measure social interactions related to YouTube videos among Facebook users. We observe that the attention a video attracts on Facebook is not always well-aligned with its popularity on YouTube. Unpopular videos on YouTube can become popular on Facebook, while popular videos on YouTube often do not attract proportionally high attentions on Facebook. This finding motivates us to develop a simple top-k video recommendation algorithm that exploits user social interaction information to improve the recommendation accuracy for niche videos, that are globally unpopular, but highly relevant to a specific user or user group. Through experiments on the collected Facebook traces, we demonstrate that our recommendation algorithm significantly outperforms the YouTube-popularity based video recommendation algorithm as well as a collaborative filtering algorithm based on user similarities.
在线视频(如YouTube视频)是在线社交网站(如Facebook)用户进行社交互动的重要话题。这为利用与视频相关的用户社交互动信息进行更好的视频推荐提供了可能性。为了实现这一目标,我们进行了一个案例研究,根据Facebook用户的社交互动向他们推荐YouTube视频。我们首先衡量Facebook用户与YouTube视频相关的社交互动。我们观察到,一个视频在Facebook上吸引的关注并不总是与它在YouTube上的受欢迎程度一致。YouTube上不受欢迎的视频可以在Facebook上流行起来,而YouTube上受欢迎的视频在Facebook上往往得不到不成比例的关注。这一发现促使我们开发一种简单的top-k视频推荐算法,该算法利用用户社交互动信息来提高利基视频的推荐准确性,这些视频在全球不受欢迎,但与特定用户或用户组高度相关。通过收集到的Facebook痕迹的实验,我们证明了我们的推荐算法明显优于基于youtube流行度的视频推荐算法以及基于用户相似度的协同过滤算法。
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引用次数: 21
Spectrum aware and energy efficient MAC protocol for cognitive radio sensor network 认知无线电传感器网络的频谱感知和节能MAC协议
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849326
Amna Jamal, C. Tham, L. Wong
Dynamic spectrum access in the form of cognitive radio (CR) has gained traction in wireless sensor networks (WSN) because of scarcity caused by the proliferation of wireless devices and service and it provides spectrum efficient communication for the resource constrained WSNs. However, proper means have to be devised to satisfy the requirements of both WSNs and CRs and to enjoy the benefits of cognition in sensor networks. In this paper, we propose a novel energy-efficient and spectrum aware multi-channel medium access control (MAC) protocol for the underlying cognitive radio enabled sensor network. We designed a spectrum aware multichannel asynchronous duty cycle approach which caters to the requirements of both the domains. The performance of the proposed MAC is evaluated via simulations. The simulation results are also compared with MCMAC, a multi-channel MAC for WSNs. The comparative results show that the proposed approach outperforms the multi-channel scheme for WSN.
由于无线设备和服务的激增导致频谱的稀缺性,以认知无线电(CR)形式的动态频谱接入在无线传感器网络(WSN)中得到了广泛的应用,它为资源受限的WSN提供了频谱高效通信。然而,必须设计合适的方法来满足wsn和cr的要求,并享受传感器网络中的认知优势。在本文中,我们提出了一种新的节能和频谱感知的多通道介质访问控制(MAC)协议,用于底层认知无线电传感器网络。我们设计了一种频谱感知的多通道异步占空比方法,满足了这两个领域的需求。通过仿真对所提MAC的性能进行了评价。仿真结果还与多通道无线传感器网络MAC (MCMAC)进行了比较。对比结果表明,该方法优于多通道无线传感器网络方案。
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引用次数: 5
VANET via Named Data Networking VANET通过命名数据网络
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849267
Giulio Grassi, Davide Pesavento, G. Pau, Rama Vuyyuru, R. Wakikawa, Lixia Zhang
In this paper we apply the Named Data Networking [1], a newly proposed Internet architecture, to networking vehicles on the run. Our initial design, dubbed V-NDN, illustrates NDN's promising potential in providing a unifying architecture that enables networking among all computing devices independent from whether they are connected through wired infrastructure, ad hoc, or intermittent DTN. This paper describes a prototype implementation of V-NDN and its preliminary performance assessment, and identifies remaining challenges.
在本文中,我们将一种新提出的互联网架构——命名数据网络[1]应用于运行中的车辆网络。我们最初的设计,被称为V-NDN,说明了NDN在提供统一架构方面的巨大潜力,该架构使所有计算设备之间的网络独立于它们是否通过有线基础设施,特设或间歇性DTN连接。本文描述了V-NDN的原型实现及其初步性能评估,并指出了仍然存在的挑战。
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引用次数: 292
Name-based replication priorities in disaster cases 灾难情况下基于名称的复制优先级
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849271
I. Psaras, Lorenzo Saino, M. Arumaithurai, K. Ramakrishnan, G. Pavlou
In the immediate aftermath of a natural disaster, network infrastructure is likely to have suffered severe damages that challenge normal communications. In addition to that, traffic substantially increases as a result of people attempting to get in touch with friends, relatives or the rescue teams. To address such requirements of a challenged network, we propose a communication framework based on messages that exploits name-based replication of content and enables ad-hoc communications with spatial and temporal scoping and prioritisation of named messages. We evaluate our design against less sophisticated replication strategies and show that important messages (e.g., from first responders) get disseminated to more nodes than less important messages.
在自然灾害的直接后果中,网络基础设施可能遭受严重破坏,对正常通信构成挑战。除此之外,由于人们试图与朋友、亲戚或救援队取得联系,交通流量大幅增加。为了满足挑战网络的这些要求,我们提出了一个基于消息的通信框架,该框架利用基于名称的内容复制,并支持具有命名消息的空间和时间范围和优先级的自组织通信。我们根据不太复杂的复制策略评估了我们的设计,并表明重要的消息(例如,来自急救人员的消息)比不太重要的消息传播到更多的节点。
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引用次数: 48
Moving Business Intelligence to cloud environments 将商业智能迁移到云环境
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849166
Adrian Juan Verdejo, Bholanathsingh Surajbali, H. Baars, H.-G. Kemper
Business Intelligence systems use information technology to supply integrated management support with data coming from several sources of structured and unstructured data. The integrated infrastructures of Business Intelligence (BI) are often too complex and hence costly and inflexible. A solution for these issues is to leverage cloud computing services to enhance legacy BI systems and applications with cost-efficient increased scalability and flexibility. However, the migration of BI systems to cloud environments is usually hindered by strict requirements regarding privacy, security, or availability and a multitude of interdependences with other systems. In this paper, we describe the challenges in the adoption of BI within cloud environments and propose a cloud migration framework to assist decision makers in taking into account the consequences of the migration of BI systems to cloud environments as well as the impact of privacy, security, cost, and performance in so doing.
商业智能系统使用信息技术为来自多个结构化和非结构化数据源的数据提供集成管理支持。商业智能(BI)的集成基础设施通常过于复杂,因此成本高昂且不灵活。这些问题的解决方案是利用云计算服务,以经济高效的可伸缩性和灵活性增强遗留BI系统和应用程序。然而,BI系统向云环境的迁移通常受到隐私、安全性或可用性方面的严格要求以及与其他系统的大量相互依赖性的阻碍。在本文中,我们描述了在云环境中采用商业智能的挑战,并提出了一个云迁移框架,以帮助决策者考虑将商业智能系统迁移到云环境的后果,以及在此过程中对隐私、安全、成本和性能的影响。
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引用次数: 12
A proposal for elastic spectrum management in wireless local area networks 无线局域网弹性频谱管理的一种方案
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849188
L. A. Lopes, Rute C. Sofia, H. Osman, Huseyin Haci
The last hop of the Internet towards the end-user is mostly supported by wireless technologies and thus interconnects multiple users, that should, ideally, be served simultaneously. The shared media capability of such last hop is, however, underused, asthe principle behind wireless technologies implies that only one user can be served at an instant in time. Aiming at allowing multiuser transmission within a specific time-frame, this technological demonstration goes over a novel wireless extension mechanism explaining how it can be applied to current wireless networks while keeping backward compatibility.
面向最终用户的互联网的最后一跳主要由无线技术支持,因此将多个用户互连起来,理想情况下,这些用户应该同时提供服务。然而,这种最后一跳的共享媒体功能没有得到充分利用,因为无线技术背后的原则意味着在同一时刻只能为一个用户提供服务。为了在特定的时间范围内允许多用户传输,本技术演示介绍了一种新的无线扩展机制,解释了如何将其应用于当前的无线网络,同时保持向后兼容性。
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引用次数: 4
Lossless reconfiguration protocol for multi-domain data plane in software-defined networks 软件定义网络中多域数据平面无损重构协议
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849221
Boyang Zhou, Haifeng Zhou, W. Gao, X. Hong, Bin Wang, Chunming Wu
Software-Defined Networking (SDN) opens the configuring interfaces for the data plane to improve its flexibility[1]. In the data plane, the switches are partitioned into multiple domains. Each domain is dynamically configured by its controller. The domains are physically connected via the border switches. In the control plane, each controller supports multiple services. Each service runs the same control program at multiple controllers in a distributed manner.
SDN (Software-Defined Networking)开放了数据平面的配置接口,提高了数据平面的灵活性。在数据平面,交换机被划分为多个域。每个域由其控制器动态配置。这些域通过边界开关进行物理连接。在控制平面,每个控制器支持多个业务。每个服务以分布式的方式在多个控制器上运行相同的控制程序。
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引用次数: 5
Poster: Energy balance bounds of mixed data transmission in wireless sensor networks 海报:无线传感器网络中混合数据传输的能量平衡边界
Pub Date : 2014-07-08 DOI: 10.1109/INFCOMW.2014.6849196
Xianjin Xia, Shining Li, Yu Zhang, Zhe Yang
Mixed data transmission strategies have been proposed to address the energy imbalance problem in wireless sensor networks. However, whether the energy of all nodes can be balanced by this approach, especially under the communication range constraints of sensor nodes, is lack of study. In this paper, we present a novel analytical model for the two-hop based mixed data transmission and derive its energy balance bounds. It is found that the limits of the mixed data transmission scheme on energy balance are only determined by the power profiles of the communication system. This power profile is indicated by a newly discovered parameter which is defined as the premium power ratio of the system.
为了解决无线传感器网络中的能量不平衡问题,提出了混合数据传输策略。然而,这种方法能否平衡所有节点的能量,特别是在传感器节点通信距离约束下,还缺乏研究。本文提出了一种新的基于两跳的混合数据传输解析模型,并推导了其能量平衡边界。研究发现,混合数据传输方案的能量平衡极限仅由通信系统的功率分布决定。该功率分布由一个新发现的参数表示,该参数被定义为系统的溢价功率比。
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引用次数: 2
期刊
2014 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)
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