检索结果-内蒙古大学图书馆

IEEE conference and Exhibition on Global Telecommunications (GLOBECOM)

作者： Wenchao Ma Yuguang Fang Department of Electrical and Computer Engineering University of Florida USA

ISBN: (纸本)0780379748

For a wireless network to effectively deliver services to the mobile users, it must have an efficient way to keep track of them. For the next generation wireless multimedia networks which can provide wide bandwidth services, the radio resource becomes more competitive. Many strategies have been proposed to reduce the spectrum consumption of the users location update and paging messages, such as the PBS scheme. In this paper, we study the PBS scheme performance under various conditions by simulations. We also propose a new scheme - MPBS which includes user time information in the profile. The user location is computed by the system based on not only the distribution probability but also the system current time. The simulation results suggest that the MPBS scheme can generate far less signaling traffic and paging delay than the PBS scheme does.

关键词： Next generation networking Costs Bandwidth Paging strategies Computational modeling Mobile radio mobility management Wireless networks Mobile computing Distributed computing Signal generators

来源：评论

学校读者我要写书评

暂无评论

Webspace surfing patterns and their impact on Web prefetching

Webspace surfing patterns and their impact on Web prefetchin...

引用

International conference on Cyberworlds

作者： J.I. Khan Qingping Tao Media Communications and Networking Research Laboratory Department of Computer Science Kent University USA

The paper presents an interesting study that how the user surfing behavior with respect to the organization of a Web space affects the performance of a prefetch enabled proxy. We have conducted experiments based on a novel hyperspace aware prefetch proxy and have studied the prefetch performance on tree and complete graph. The study assesses the system's responsiveness as well as the background loads for various user interaction duration, surfing and prefetch sequences. The results show that awareness about the Web space and surfing sequence can greatly help in improving prefetch performance. Schemes such as these also conversely may enable professional content developers to create prefetch friendly collection for increased site responsiveness.

关键词： Prefetching Delay Streaming media Web server Frequency estimation Laboratories Computer science Tree graphs Embedded computing multimedia computing

来源：评论

学校读者我要写书评

暂无评论

A middleware architecture for streaming media over IP networks to mobile devices

A middleware architecture for streaming media over IP networ...

引用

IEEE conference on Wireless Communications and networking

作者： K. Curran G. Parr Internet Technologies Research Group Northern Ireland Knowledge Engineering Laboratory University of Ulster UK

Chameleon is 100% Java middleware for multimedia streaming to heterogeneous mobile clients, which allows the dynamic configuration of protocols with respect to application requirements and available network resources. We evaluate the dynamic reconfigurability of the middleware in order to demonstrate runtime adaptation. We specially concentrate on the secondary quality transformation technique (SQT) of the middleware which enables clients to not only subscribe to media groups in accordance with available resources and network capacity but to also adapt media quality within each quality group dynamically in accordance to resource constraints.

关键词： Middleware Streaming media IP networks Bandwidth Java Knowledge engineering Laboratories Wireless application protocol Transport protocols Pervasive computing

来源：评论

学校读者我要写书评

暂无评论

Integration of advanced reservation and bandwidth reconfiguration based admission control in wireless networks with multimedia services

Integration of advanced reservation and bandwidth reconfigur...

引用

International conference on Distributed computing Systems Workshop

作者： Jian Ye Jiongkuan Hou S. Papavassiliou Broadband Mobile and Wireless Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology University Heights Newark NJ USA

In this paper we propose an integrated bandwidth management and call admission control scheme applicable in wireless networks that support multiple services with different QoS requirements. The proposed scheme is achieved via i) the integration of a position-assisted and mobility-based predictive advanced bandwidth reservation mechanism that facilitates the seamless operation of the handoff process and ii) a bandwidth reconfiguration based call admission control strategy that supports flexible QoS management. The comparison of the achievable performance of our proposed scheme with the corresponding results of conventional systems demonstrate that our integrated strategy can alleviate the problem of over-reservation, support seamless operation throughout the wireless network and increase significantly the system resource utilization.

关键词： Bandwidth Admission control Intelligent networks Wireless networks Resource management Call admission control Mobile computing Laboratories Computer network management Technology management

来源：评论

学校读者我要写书评

暂无评论

Channel adaptive fair queueing for scheduling integrated voice and data services in multicode CDMA systems

Channel adaptive fair queueing for scheduling integrated voi...

引用

IEEE conference on Wireless Communications and networking

作者： Li Wang Yu-Kwong Kwok Wing-Cheong Lau V.K.N. Lau Department of Electrical and Electronic Engineering University of Hong Kong Hong Kong China

CDMA (code division multiple access) systems are critical building blocks of future high performance wireless and mobile computing systems. While CDMA systems are very mature for voice services, their potentials in delivering high quality data services are yet to be investigated. One of the most crucial component in an advanced wideband CDMA system is the judicious allocation of bandwidth resources to both voice and high data rate services so as to maximize utilization while satisfying the respective quality of service requirements. Specifically, in a multicode CDMA system, the problem is to intelligently allocate codes to the users' requests. While previous work in the literature has addressed this problem from a capacity point of view, the fairness aspect, which is also important from the users' point of view, is largely ignored. In this paper, we propose a new code allocation approach that is channel adaptive and can guarantee fairness with respect to the users' channel conditions. Simulation results show that out approach is more effective than the proportional fair approach.

关键词： Multiaccess communication Wideband Message service Base stations Data engineering Mobile computing High performance computing multimedia systems Resource management Bandwidth

来源：评论

学校读者我要写书评

暂无评论

A hierarchical routing protocol providing stability and distribution for MANET

A hierarchical routing protocol providing stability and dist...

引用

International conference on Information, Communications and Signal Processing

作者： P. Yang K.C. Yow N. Sukumar School of Computer Engineering Nanyang Technological University Singapore

ISBN: (纸本)0780381858

Many hierarchical routing algorithms have been proposed to support routing in mobile ad hoc networks (MANETs). Hierarchical structures have been used to provide scalable solutions in many large networking systems (L. Kleinrock, et al., (1997)), (Z. Xu, et al., (1998)) that have been designed. Building a hierarchical ad hoc network is a very promising way to achieve scalability. Previous protocols have been focusing on the schemes of how to cluster and how to establish hierarchical structure on the lowest level. In this paper we extend existing schemes to help build more distributed and stable hierarchical structures. We present the design and implementation of an algorithm required for rapid self-organization of network into multiple levels. We utilize gateways between clusters to relive the storage and communication overhead of clusterhead. Since each node can only act as clusterhead in single level at most, independency of different levels is increased and overhead of critical nodes is reduced as a result. The new algorithm also provides some insight into new possible designs of routing protocols.

关键词： Routing protocols Stability Mobile ad hoc networks Peer to peer computing Clustering algorithms Ad hoc networks Algorithm design and analysis Computer networks Distributed computing Buildings

来源：评论

学校读者我要写书评

暂无评论

Integrating digital video into broadband networks

Integrating digital video into broadband networks

引用

International conference on Applied Electromagnetics and Communications (ICECom)

作者： K. Crnkovic H. Domitrovic M. Maletic Faculty of Electrical Engineering and Computing University of Zagreb Zagreb Croatia

Two technologies will drive broadband multimedia: ATM networking and MPEG-2 digital video compression. This text provides a basic look at MPEG-2 and ATM, the key enablers for digital video, showing how to integrate them into an efficient delivery system for next-generation digital video services. An example of the real TV network is shown and described with all its elements.

关键词： Broadband communication Asynchronous transfer mode Video compression Transform coding Video on demand Videoconference Streaming media Quality of service Clocks TV

来源：评论

学校读者我要写书评

暂无评论

Emerging mobile communication technologies for health: some imperative notes on m-health

Emerging mobile communication technologies for health: some ...

引用

Annual International conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： R.S.H. Istepanian J.C. Lacal Mobile Information & Network Technologies Research Center Kingston University UK IDEN Subscriber Group (USA) Motorola

The next generation of "wireless e-health technologies" is a new and evolving topic in the areas of telemedical and telecare systems. These technologies involve the exploitation of mobile telecommunication and multimedia technologies to provide better access to healthcare personnel on the move, by removing the key disadvantage of trailing wires in current systems. These technologies provide equal access to medical information and expert care by overcoming the boundaries of separation that exist today between different users of such medical information. A great benefit to all users will be a more efficient use of resources and far greater location independence. In this paper we will address some notes and future trends in these emerging areas and their applications for m-health systems. We will also discuss current as well as future strategies for implementing these system within important healthcare sectors as well as critical medical environments.

关键词： Mobile communication Communications technology Telemedicine Biomedical imaging Medical services multimedia systems Wireless communication ISDN Mobile computing Next generation networking

来源：评论

学校读者我要写书评

暂无评论

Introduction to the IEEE Transactions on Mobile computing

引用

IEEE Transactions on Mobile computing 2002年第1期1卷 2-3页

作者： La, Porta, Thomas F. IEEE

No abstract available

关键词： Mobile computing Pervasive computing Computer Networks Application Software Computer Architecture Communication Networks IP Networks Web And Internet Services Communications Technology Mobile Communication

来源：评论

学校读者我要写书评

暂无评论

Proceedings of SPIE: multimedia computing and networking 2002

Proceedings of SPIE: Multimedia computing and networking 200...

引用

multimedia computing and networking 2002

The proceedings contains 19 articles from the conference of SPIE: multimedia computing and networking 2002. Topics discussed include: end-to-end differentiation of congestion and wireless losses;multiresource allocation and scheduling for periodic soft real-time applications;exploiting the fair share to smoothly transport layered encoded video into proxy caches;wireless network interface energy consumption implications of popular streaming formats;efficient delivery techniques for variable-bit-rate multimedia;and distributed video streaming over Internet.

关键词： Wireless telecommunication systems

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：