检索结果-内蒙古大学图书馆

IEEE Symposium on computers and Communications (ISCC)

作者： C.K. Nguyen A. Kumar Mobile Information Networks & Distributed Systems MINDS Lab Computer Engineering & Computer Science CECS Department University of Louisville Louisville KY USA

The paper proposes a throughput and energy-aware medium-access-control protocol for wireless sensor networks. The proposed approach provides a sleeping-time adjustment scheme to flexibly adjust the sleep time to reduce the wasted energy in a low-traffic network and increase the throughput in a high-traffic network. The sleeping and waking durations are determined using time counters rather than time slots. A waking-time sharing scheme is responsible for establishing the common waking time among a group of neighbors for group communication. The proposed protocol solves the energy inefficiency caused by idle listening. Simulation experiments have been performed to demonstrate the effectiveness of the proposed approach compared to some other energy-aware medium-access-control protocols.

关键词： Media Access Protocol Sleep Wireless sensor networks Throughput Access protocols Energy consumption Scheduling Wireless application protocol Frequency Time division multiple access

来源：评论

学校读者我要写书评

暂无评论

The power consumption of Bluetooth scatternets

The power consumption of Bluetooth scatternets

引用

Consumer Communications and Networking Conference, CCNC IEEE

作者： L. Negri J. Beutel M. Dyer Department of Electrical Eng. and Computer Science Politecnico di Milano Milano Italy Computer Engineering and Networks Lab ETH Zurich Zurich Switzerland

来源：评论

学校读者我要写书评

暂无评论

GENp2-2: The Simplicity Project and its Demonstrator: Improving Ease of Use and Personalization of ICT Services

GENp2-2: The Simplicity Project and its Demonstrator: Improv...

引用

IEEE Globecom 2006

作者： G. Bartolomeo N. Blefari Melazzi F. Martire S. Salsano S. Kapellaki E. Koutsoloukas G. N. Prezerakos N.D. Tselikas I. S. Venieris DIE Universita di Roma Tor Vergata Italy Intelligent Communications & Broadband Networks Lab School of Electrical & Computer Engineering National and Technical University of Athens Greece

As technology develops, people are using an ever broader and heterogeneous range of ICT devices and network-based services. The result is an enormous burden of complexity on the shoulders of users, service providers and network operators. The goal of the Simplicity project, supported by the European Union, is to reduce this complexity by: (i) providing automatic customization of user access to services and the network; (ii) automatically adapting services to terminal characteristics and user preferences; (iii) orchestrating network capabilities. The Simplicity approach is based on a personalization device, the so-called Simplicity device, which, together with a brokerage framework, offers transparent service configuration and runtime adaptation, according to user preferences and computing/networking context conditions. This paper presents the Simplicity project, briefly discusses its architecture and introduces the Simplicity demonstrator: a proof of concept implementation used to verify our approach, through diverse usage scenarios. In addition, we introduce the main aspects of a follow-up project of Simplicity, named SMS.

关键词： computer networks Context-aware services Intelligent agent Intelligent networks Broadband communication Network interfaces Java Universal Serial Bus Software agents Runtime

来源：评论

学校读者我要写书评

暂无评论

Independence and coloring problems on intersection graphs of disks

引用

Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2006年 3484 LNCS卷 135-155页

作者： Erlebach, Thomas Fiala, Jiří ETH Zürich Computer Engineering and Networks Lab. CH-8092 Zürich Switzerland Charles University Department of Applied Mathematics Institute for Theoretical Computer Science Malostranské nám. 2/25 118 00 Prague Czech Republic

This chapter surveys on-line and approximation algorithms for the maximum independent set and coloring problems on intersection graphs of disks. It includes a more detailed treatment of recent upper and lower bounds o... 详细信息

ISBN: (纸本)3540322124

关键词： Approximation algorithms

来源：评论

学校读者我要写书评

暂无评论

A fast synchronization technique for DVB-H receiver using in-band pilots and cyclic prefix

A fast synchronization technique for DVB-H receiver using in...

引用

IEEE International Conference on Consumer Electronics (ICCE)

作者： Xianbin Wang Yiyan Wu Kechu Yi Bin Tian J.-Y. Chouinard Communications Rcscarch Centre Ottawa ONT Canada State Lab of Integrated Service Networks Xidian University Xi'an Shaanxi China Department of Electrical and Computer Engineering Laval University QUE Canada

A new fast time synchronization technique is proposed for DVB-H receiver in this paper. Only one DVB-H OFDM symbol is needed to achieve accurate time synchronization by using the correlation function of the received signal and four time-domain local references generated from the DVB-H scattered pilots. The computation complexity of the new algorithm is further reduced by limiting the range of correlation function, which is realized by exploiting the cyclic property of the OFDM signal

关键词： Digital video broadcasting Frequency synchronization OFDM Scattering Streaming media Decoding Signal generators Mobile communication Communications technology GSM

来源：评论

学校读者我要写书评

暂无评论

Digital Ecosystems: Evolving Service-Orientated Architectures 06

Digital Ecosystems: Evolving Service-Orientated Architecture...

引用

Bio-Inspired Models of Network, Information and Computing Systems, BIONETICS

作者： Gerard Briscoe Philippe de Wilde Intelligent Systems and Networks Group Department of Electrical and Electronic Engineering Imperial College London London UK Intelligent Systems Lab School of Mathematical and Computer Science Heriot-Watt University Edinburgh UK

ISBN: (纸本)9781424404636

A novel optimisation technique inspired by natural ecosystems is presented, where the optimisation works at two levels: a first optimisation, migration of services which are distributed in a decentralised peer-to-peer network, operating continuously in time; this process feeds a second optimisation based on evolutionary computing that operates locally on single peers and is aimed at finding solutions to satisfy locally relevant constraints. Through this two-fold process, the local search is accelerated and will yield better local optima, because the distributed optimisation already provides a good sampling of the search space by making use of computations already performed in other peers with similar constraints. We call this new distributed optimisation architecture a digital ecosystem, an ecosystem-orientated architecture (EOA) created by extending a service-oriented architecture (SOA) with distributed evolutionary computing (DEC). The digital ecosystem will allow services to recombine and evolve over time, constantly seeking to improve their effectiveness for the user base. individuals within our digital ecosystem will be applications (groups of services), created in response to user requests by using evolutionary optimisation to aggregate the services. These individuals will migrate through the digital ecosystem and adapt to find niches where they are useful in fulfilling other user requests

关键词： Ecosystems Constraint optimization computer architecture Peer to peer computing Distributed computing Service oriented architecture Feeds computer networks Acceleration Sampling methods

来源：评论

学校读者我要写书评

暂无评论

A fast synchronization technique for DVB-H receiver using in-band pilots and cyclic prefix

A fast synchronization technique for DVB-H receiver using in...

引用

International Conference on Consumer Electronics, ICCE '06

作者： Wang, Xianbin Wu, Yiyan Yi, Kechu Tian, Bin Chouinard, Jean-Yves IEEE Communications Research Centre Canada Box 11490 Station H 3701 Carling Ave Ottawa Ont. K2H 8S2 Canada State Lab of Integrated Service Networks Xidian University Xi'an 710071 China Dept. of Electrical and Computer Engineering Laval University Que. G1K 7P4 Canada

ISBN: (纸本)0780394593

A new fast time synchronization technique is proposed for DVB-H receiver in this paper. Only one DVB-H OFDM symbol is needed to achieve accurate time synchronization by using the correlation function of the received signal and four timedomain local references generated from the DVB-H scattered pilots. The computation complexity of the new algorithm is further reduced by limiting the range of correlation function, which is realized by exploiting the cyclic property of the OFDIVI signal. © 2006 IEEE.

关键词： Signal receivers

来源：评论

学校读者我要写书评

暂无评论

Information dissemination in highly dynamic graphs 05

Information dissemination in highly dynamic graphs

引用

2005 Joint Workshop on Foundations of Mobile Computing, DIALM-POMC 2005

作者： O'Dell, Regina Wattenhofer, Roger Computer Engineering and Networks Lab ETH Zurich Switzerland

ISBN: (纸本)1595930922

We investigate to what extent flooding and routing is possible if the graph is allowed to change unpredictably at each time step. We study what minimal requirements are necessary so that a node may correctly flood or route a message in a network whose links may change arbitrarily at any given point, subject to the condition that the underlying graph is connected. We look at algorithmic constraints such as limited storage, no knowledge of an upper bound on the number of nodes, and no usage of identifiers. We look at flooding as well as routing to some existing specified destination and give algorithms. Copyright 2005 ACM.

关键词： Information dissemination

来源：评论

学校读者我要写书评

暂无评论

An integration scheme of overlay multicast protocol for wired networks and wireless ad hoc networks

An integration scheme of overlay multicast protocol for wire...

引用

International Conference on Wireless networks (ICWN'05)

作者： Ko, B Ahn, S Kim, N Lee, Y Lee, D Information and Communications University Computer Networks Lab School of Engineering South Korea

ISBN: (纸本)1932415556

When we use multicast services it? heterogeneous networks such that the wired networks and the wireless ad hoc networks are combined, it is inefficient to apply the wired overlay multicast protocol to wireless ad hoc network and vice versa, due to existence of mobility and the limitation of bandwidth, power and etc. With our best knowledge, several multicast gateways have been studied in order to integrate multicast between heterogeneous networks. Existing multicast gateways need protocol translations when a node wants to join for multicast group which is in different environmental networks. However, deploying translation functions to existing gateway causes another deployment problem. In this paper, we propose two cases to place a translation function. It can be located in wireless ad hoc nodes, wired end nodes with Rendezvous Point. We discuss and compare to each case and problem occurred, and analyze using performance metrics such as control overhead, join latency and stretch The control overhead is calculated by number of control messages. The more control messages are required when the translation function is in the wireless ad hoc network. The join latency is shorter when the translation function is in the wired network. Also, the stretch is better when the wireless nodes have translation function.

关键词： Heterogeneous networks

来源：评论

学校读者我要写书评

暂无评论

Zone-based traffic load balancing to ensure Quality of Service (QoS) in distributed systems

Zone-based traffic load balancing to ensure Quality of Servi...

引用

11th International Conference on Parallel and Distributed Systems Workshops, ICPADS 2005

作者： Ahmed, Ashraf Uddin Saito, Senro Cheng, Zixue Graduate School of Computer Science and Engineering Computer Networks Lab. Aizu University Japan Faculty of Computer Science and Engineering Computer Communication Lab. Aizu University Japan Faculty of Computer Science and Engineering Computer Networks Lab. Aizu University Japan

ISBN: (纸本)0769522815

We propose a method for the sharing of capacity among zones of a communication network. Our approach can be employed either when a zone owner wishes to sell capacity for a specified period of time to a number of different zones, or when zones cooperate to build a network to be shared among themselves. We show how load balancing can be performed to mediate between rapidly fluctuating costs and the capacity of zone, which might be traded. Depending on the density of the zone, an important property of the process is that it, prevents zone from congestion. © 2005 IEEE.

关键词： Telecommunication networks

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：