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2010 IEEE Globecom Workshops最新文献

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A large scale content-based network considering publish/process/subscribe 考虑发布/处理/订阅的大规模基于内容的网络
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700320
Matsuura Satoshi, Ochiai Hideya, Kimura Shingo, Fujikawa Kazutoshi, S. Hideki
We add data processing components onto content-based networks. Content-based networks provide publish/subscribe system in distributed environment and appropriate for notifications and alerts. If content-based networks process published data and create meaningful information, this system enhance the application fields in ubiquitous sensing environment. In this paper, we describe how to add data processing components onto content-based networks. On the contrary, data processing components causes concentrations of sensor data. We also describe load distribution mechanism of these components. Performance evaluations of our implementation shows that load distribution mechanism works well, and proposed system secure the scalability by adding data components.
我们将数据处理组件添加到基于内容的网络中。基于内容的网络提供分布式环境下的发布/订阅系统,适合于通知和警报。如果基于内容的网络处理发布的数据并产生有意义的信息,该系统将扩大在泛在传感环境中的应用领域。在本文中,我们描述了如何在基于内容的网络中添加数据处理组件。相反,数据处理组件导致传感器数据的集中。文中还描述了这些部件的载荷分布机理。性能评估表明负载分配机制运行良好,并通过增加数据组件保证了系统的可扩展性。
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引用次数: 1
Achieving distributed load balancing in self-organizing LTE radio access network with autonomic network management 利用自主网络管理实现自组织LTE无线接入网络中的分布式负载平衡
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700361
Heng Zhang, Xue-song Qiu, Luoming Meng, Xidong Zhang
Future Long Term Evolution (LTE) Radio Access Network (RAN) will benefit from a significant degree of self-organization. Autonomic Load Balancing (ALB) is considered as an important self-organizing function in LTE RAN. In this work, distributed ALB is achieved by Autonomic Network Management (ANM). Load conditions of eNBs (E-UTRAN NodeB) can be detected. Sizes and shapes of cellular coverage can be adjusted automatically according to load conditions, so as to balance load. Simulation results demonstrated that by the use of ALB, the system capacity can be improved significantly.
未来长期演进(LTE)无线接入网(RAN)将受益于显著程度的自组织。自主负载平衡(ALB)是LTE无线局域网中一项重要的自组织功能。本文采用自主网络管理(ANM)技术实现分布式ALB。可以检测enb (E-UTRAN NodeB)的负载情况。蜂窝覆盖的大小和形状可以根据负载情况自动调整,从而平衡负载。仿真结果表明,使用ALB可以显著提高系统容量。
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引用次数: 19
Taxonomy of cloud computing services 云计算服务的分类
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700157
C. Hoefer, Georgios Karagiannis
Cloud computing is a highly discussed topic, and many big players of the software industry are entering the development of cloud services. Several companies want to explore the possibilities and benefits of cloud computing, but with the amount of cloud computing services increasing quickly, the need for a taxonomy framework rises. This paper describes the available cloud computing services, and proposes a tree-structured taxonomy based on their characteristics, to easily classify cloud computing services making it easier to compare them.
云计算是一个被高度讨论的话题,许多软件行业的大玩家正在进入云服务的开发。一些公司希望探索云计算的可能性和好处,但是随着云计算服务数量的快速增长,对分类法框架的需求也在增加。本文对现有的云计算服务进行了描述,并根据其特点提出了一种树状结构的分类方法,便于对云计算服务进行分类和比较。
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引用次数: 129
OWL-based verifying temporal properties for pervasive computing 基于owl的普适计算时间属性验证
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700209
Xiaolie Ye, L. Liao
The OWL 1has been as a modeling language to formalize context-awareness pervasive environments. And also, various kinds of context ontologies in the OWL are proposed to conceptualize the entities for describing pervasive computing environments. With increasingly considering about spatial and temporal expressive capabilities and properties related for pervasive computing, these approaches provide some methods for context reasoning. However, for context reasoning on temporal properties relating to the behaviors of each entity in pervasive environments, the reasoning mechanism in these approach are not sufficient to follow ontology reasoning, such ontology entailment or consistence. Therefore, the OWL-based Past Linear Temporal Logic is proposed to formulate temporal properties along a sequence of context or situation changes using a fragment of the OWL. In particular, with refining the method for reducing the validity of contextual temporal properties into the entailment relationship in the OWL, we propose an approach to transform the verification of the authenticity in a sequence of interactions into the validity of the Past-LTL formula corresponding.
OWL 1已经被作为一种建模语言来形式化上下文感知的普遍环境。此外,还提出了OWL中各种类型的上下文本体来概念化描述普适计算环境的实体。随着越来越多地考虑与普适计算相关的时空表达能力和属性,这些方法为上下文推理提供了一些方法。然而,对于普遍性环境中与每个实体的行为相关的时间属性的上下文推理,这些方法中的推理机制不足以遵循本体推理,如本体蕴涵或一致性。因此,提出了基于OWL的过去线性时间逻辑,利用OWL的片段沿着上下文或情况变化的序列来表述时间属性。特别是,通过改进OWL中将上下文时间属性的有效性降低为蕴含关系的方法,我们提出了一种将一系列交互中的真实性验证转换为相应的Past-LTL公式有效性的方法。
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引用次数: 0
Towards longer lifetime of emerging memory technologies using number theory 利用数论实现新兴存储技术的更长的寿命
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700281
L. Dolecek
Emerging non-volatile memory devices show tremendous promise for a wide variety of applications, ranging from consumer electronics to server technologies. The advent of such multi-scale opportunities also carries a unique set of challenges. Increasingly popular Flash memory devices possess an intrinsic asymmetry during the write operation: programming memory cells to values lower than currently stored values is considerably slower and more costly than programming to higher values. It is critical to keep this cost low, as it directly affects memory lifetime and performance. Concurrently, demands for higher densities under reduced technology sizing make the data reliability a formidable objective. To address the compound issue of sustained and low-cost data reliability and high performance, in this work we propose a methodology to provide guaranteed immunity to a prescribed number of asymmetric errors, while having asymptotically negligible redundancy. Our construction uses ideas from additive and combinatorial number theory, and builds upon recently introduced coding schemes. We first show how this construction can be used in the single level cell (SLC) setup, and subsequently extend the construction to the setting with several levels per cell, including multi-level cell (MLC) and triple-level (TLC) setting. We also discuss practical aspects of such schemes, including methods for systematic encoding, correction of limited-magnitude errors, and the additional protection under a certain number of bidirectional errors. This number-theoretic based approach is a promising direction for extending the lifetime of memories at sustained reliability.
新兴的非易失性存储设备显示了从消费电子到服务器技术等各种应用的巨大前景。这种多尺度机遇的出现也带来了一系列独特的挑战。越来越流行的闪存设备在写操作过程中具有内在的不对称性:将存储单元编程为低于当前存储值的值比编程为更高的值要慢得多,而且成本更高。保持低成本非常重要,因为它直接影响内存生命周期和性能。同时,在减小技术规模的情况下,对更高密度的要求使数据可靠性成为一个艰巨的目标。为了解决持续和低成本的数据可靠性和高性能的复合问题,在这项工作中,我们提出了一种方法,以提供对规定数量的不对称错误的保证免疫,同时具有渐近可忽略的冗余。我们的构造使用了加法和组合数论的思想,并建立在最近介绍的编码方案之上。我们首先展示了这种结构如何在单级细胞(SLC)设置中使用,然后将该结构扩展到每个细胞具有多个级别的设置,包括多级细胞(MLC)和三级细胞(TLC)设置。我们还讨论了这种方案的实际方面,包括系统编码的方法,有限幅度误差的校正,以及在一定数量的双向误差下的额外保护。这种基于数论的方法是在持续可靠的情况下延长存储器寿命的一个有希望的方向。
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引用次数: 7
An ultra wideband communication channel model for the human abdominal region 人体腹部超宽带通信信道模型
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700319
S. Støa, R. Chávez-Santiago, I. Balasingham
Long-term implantable devices communicating with receivers in the outer human body through a wireless interface are one of the most prominent applications of micro/nano-technology in medicine. Ultra wideband (UWB) interfaces have great potential for the communication links of these telemedicine applications due to their inherent low power consumption, high transmission rates, and simple electronics. Novel implant medical sensors and actuators operate in the abdomen at different depths, which makes an "abdominal" channel model essential for the proper design of the UWB communication interfaces of said devices. This paper presents a statistical model for the propagation of a UWB pulse through the abdominal region in the 1–6 GHz frequency band. For the development of this statistical model, numerical electromagnetic (EM) simulations were conducted using a digital anatomical model that includes the dielectric properties of human tissues; using this EM simulator, the channel responses of many in-body probes were computed. Based on the statistical analysis of the obtained data, we provide the mathematical expressions to calculate the path loss and shadowing at depths between 10–150 mm inside the abdomen. In addition, the channel impulse response (CIR) can be reproduced using a set of statistical formulas also provided. Our proposed model approximates very well the abdominal in-body channel properties, thereby eliminating the need for time-consuming and complex numerical simulations.
通过无线接口与人体外部接收器进行通信的长期植入式设备是微纳米技术在医学上最突出的应用之一。超宽带(UWB)接口由于其固有的低功耗、高传输速率和简单的电子设备,在这些远程医疗应用的通信链路中具有巨大的潜力。新型植入式医疗传感器和执行器在腹部不同深度工作,这使得“腹部”通道模型对于所述设备的超宽带通信接口的正确设计至关重要。本文提出了超宽带脉冲在1 - 6ghz频段内通过腹部区域传播的统计模型。为了开发该统计模型,使用包含人体组织介电特性的数字解剖模型进行了数值电磁(EM)模拟;利用该仿真器,计算了多个体内探头的通道响应。在对所得数据进行统计分析的基础上,给出了计算腹部10 ~ 150mm深度处路径损耗和阴影的数学表达式。此外,通道脉冲响应(CIR)可以用一组统计公式也提供再现。我们提出的模型非常接近腹部体内通道特性,从而消除了耗时和复杂的数值模拟的需要。
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引用次数: 37
Server selection with delay constraints for online games 带延迟约束的在线游戏服务器选择
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700451
Yuh-Rong Chen, S. Radhakrishnan, S. Dhall, S. Karabuk
Improving latency is the key to a successful online game-playing experience. With the use of multiple servers along with a well-provisioned network it is possible to reduce the latency. Given a network of servers, game clients, and a desired delay bound, we have designed algorithms to determine the subnetwork of servers whose cardinality is minimal. We have considered the cases wherein the subnetwork architecture is a client-server and a peer-to-peer. We have also provided exhaustive empirical evaluations of our algorithms and compared their performance with the optimum. Experimental results show that our polynomial-time algorithms could find good solutions quickly.
改善延迟是成功在线游戏体验的关键。通过使用多台服务器和配置良好的网络,可以减少延迟。给定服务器网络、游戏客户端和期望的延迟边界,我们设计了算法来确定基数最小的服务器子网。我们已经考虑了子网体系结构是客户机-服务器和点对点的情况。我们还对我们的算法进行了详尽的实证评估,并将其性能与最优算法进行了比较。实验结果表明,我们的多项式时间算法可以快速找到较好的解。
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引用次数: 9
QoS-guaranteed admission control for OFDMA-based systems 基于ofdma系统的qos保证准入控制
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700392
M. Ramkumar, Bayu Anggorojati, A. Stefan, R. Neeli, R. Prasad
This paper proposes a novel admission control (AC) algorithm for guaranteed quality of service (QoS) to all users. The proposed solution provides better utilization of system capacity using adaptive modulation (AM). A scheduler based on a per user priority function is also given in this paper. The AC is given by allocating the exact number of slots for each user that will meet its QoS. For every new user the number of slots required to meet its service requirements is estimated based on its channel quality information (CQI), packet arrival rate and buffer length. Using the average QoS achieved, the satisfaction index (SI) and priority is calculated for every user, which is used as key input for the scheduler. Further, the resource allocation in time and frequency for Orthogonal Frequency Division Multiplexing (OFDMA) systems is also discussed based on user satisfaction and number of slots required for each user. Finally, the proposed design is validated with OFDMA systems, but can be extended to any wireless system.
为保证所有用户的服务质量,提出了一种新的准入控制算法。提出的解决方案利用自适应调制(AM)更好地利用系统容量。本文还给出了一个基于每用户优先级函数的调度程序。AC是通过为每个用户分配满足其QoS的确切插槽数量来给出的。对于每个新用户,根据其信道质量信息(CQI)、数据包到达率和缓冲区长度估计满足其业务需求所需的插槽数量。使用实现的平均QoS,计算每个用户的满意度指数(SI)和优先级,并将其用作调度器的关键输入。此外,还讨论了基于用户满意度和每个用户所需插槽数的正交频分复用(OFDMA)系统的时间和频率资源分配。最后,提出的设计在OFDMA系统中得到验证,但可以扩展到任何无线系统。
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引用次数: 8
Avoid communication outages in decentralized planning 在分散规划中避免通信中断
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700242
Sameera S. Ponda, Olivier Huber, Han-Lim Choi, J. How
This paper proposes an extension to the Consensus-Based Bundle Algorithm (CBBA), a distributed task allocation framework previously developed at the Aerospace Control Laboratory (ACL), MIT, designed to address complex mission planning for a team of heterogeneous agents operating in a dynamic environment. A key assumption of CBBA involves having a connected network, a constraint which is not always feasible in realistic mission scenarios. In this paper, we present a mechanism that aims at preventing and repairing network disconnects. The dynamic network topology is predicted using available information within the planner and relay tasks are created to strengthen the connectivity of the network. By employing underutilized resources, the presented approach improves network connectivity without limiting the scope of the active agents thus improving mission performance.
本文提出了基于共识的束算法(CBBA)的扩展,CBBA是麻省理工学院航空航天控制实验室(ACL)先前开发的分布式任务分配框架,旨在解决在动态环境中运行的异构代理团队的复杂任务规划。CBBA的一个关键假设包括有一个连接的网络,这在现实任务场景中并不总是可行的约束。在本文中,我们提出了一种旨在防止和修复网络断开的机制。使用规划器中的可用信息预测动态网络拓扑,并创建中继任务以加强网络的连通性。通过利用未充分利用的资源,该方法在不限制活动主体范围的情况下提高了网络连通性,从而提高了任务性能。
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引用次数: 0
An area and latency assessment for coding for memories with stuck cells 记忆卡细胞编码的区域和延迟评估
Pub Date : 2010-12-01 DOI: 10.1109/GLOCOMW.2010.5700262
L. A. Lastras-Montaño, A. Jagmohan, M. Franceschini
We explore the implementation in hardware of encoders for algebraic codes for binary memories that have some cells stuck to given values. The location and stuck values of the cells are assumed to be known at encode time, but not at decode time. Recently, an algorithm for BCH-like codes for stuck cells was developed that relies on a type of polynomial interpolation in an extension field followed by a step of projection of the result of the interpolation back into the binary field. In this article, we report on the area and latency of a sequential implementation of this encoding algorithm for a variety of values for the number of stuck cells. The statistics on area and latency follow from preliminary circuit synthesis results obtained from a full VHDL implementation of these examples.
我们探讨了二进制存储器的代数编码的硬件实现,其中有一些单元被固定在给定的值上。假设单元格的位置和卡值在编码时是已知的,但在解码时不是。最近,提出了一种求解类bch卡胞编码的算法,该算法依赖于在扩展域中进行一种多项式插值,然后将插值结果投影回二进制域中。在本文中,我们报告了该编码算法的顺序实现的面积和延迟,用于各种卡住单元的数量值。有关面积和延迟的统计数据来自这些示例的完整VHDL实现获得的初步电路合成结果。
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引用次数: 6
期刊
2010 IEEE Globecom Workshops
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