未来网络应用场景与网络能力需求

以TCP/IP为体系架构的互联网已经发展为当前信息社会的重要基础设施。但随着网络流量的迅速增长和各种新兴应用的不断出现,现有网络体系结构在各方面的问题日益突出。分析了未来网络的新型应用,并明确了未来网络应用的性能需求会给网络体系结构的研究和设计提供更清晰的方向。对浸入式体验、物联网、触觉互联网和智能交通这几类典型未来网络应用的应用场景进行了分析,总结出未来网络应用对未来网络的能力需求,导出关键的网络性能指标需求。     

应用对未来网络的需求与挑战

技术的发展和未来社会全面数字化、智能化的需求，使多种新的网络应用成为可能。这些应用的大规模使用给用户“身临其境”、高速交互与精准控制的极致体验，同时也对传输能力提出了极高的要求。从描述未来网络中的 4 个应用场景出发，通过对比当今和未来网络应用的场景特点、技术实现手段和方法、用户体验、性能指标要求，分析未来网络应用的演进趋势和网络传输指标要求，总结和预测对未来网络的能力需求。     

国外互联网新业务信息安全管理对策

由于互联网新业务具有较强的不可预见性．因此对于互联网新业务发展中所带来的信息安全问题。互联网新业务种类不断翻新，从监管的视角出发，互联网新业务基本可以划分为三个大类：社区类、信息发布类和信息检索类。本文将分别介绍国外对社区类、信息发布类和信息检索类互联网新业务的管理对策。     

访存与用户行为敏感的MPSoC应用映射

应用映射是MPSoC设计中的关键问题,针对多应用负载的MPSoC,提出一种访存与用户行为敏感的动态映射策略,该策略根据应用的数据访问特征区分热点与非热点应用,并对用户行为进行建模,根据用户行为模型,进一步在运行时区分关键与非关键应用.对每个进入系统的应用,按照应用的热点及关键性分类动态选择在线映射算法,让热点应用围绕存储器布局,非热点应用尽量避免占用存储器附近的资源;对关键应用,最小化应用内通信开销和链路竞争,对非关键应用,最小化应用间通信开销和链路竞争.实验表明,与单纯考虑访存或用户行为的映射策略相比,本文策略能够降低系统整体的通信能耗.     

Mobile application driven consumer engagement

The growing popularity of mobile technologies and applications, lead many companies to develop relations with consumers through mobile applications. Therefore, it is important to understand how to design applications based on consumer preferences. This research seeks to understand which features of mobile applications stimulate consumer engagement and lead to continuous use of mobile applications. This study used an online questionnaire to collect data from 246 respondents. The data was analyzed making use of Structural Equations Modeling (SEM). The results indicate that perception of such features as design solutions and information quality will result in higher engagement leading to continuous usage of mobile applications. Moreover, consumer engagement positively influenced users’ intention to continuous usage of mobile applications. Inconsistent with expectation, consumer interaction and functionality features are not found to be positively related to consumer engagement with mobile applications.     

What installed mobile applications tell about their owners and how they affect users’ download behavior

The rapid growth in the mobile application market presents a significant challenge to find interesting and relevant applications for users. An experimental study was conducted through the use of a specifically designed mobile application, on users’ mobile phones. The goals were; first, to learn about the users’ personality and the applications they downloaded to their mobile phones, second to recommend applications to users via notifications through the use of experimental mobile application and learn about user behavior in mobile environment. The question of how the personality features of users affect their compliance to recommendations is explored in this study. It is found that conscientiousness is positively related with accepting recommended applications and being agreeable is related with the preference for the applications of editor’s choice. Furthermore, in this study, applications owned by the user and the composition of applications under categories and their relation with personality features are explored. It is shown that the number of user owned applications and their category differ according to gender and personality. Having similar applications and the number of applications owned under specific categories increase the probability of accepting recommended applications.     

Industrial application of HDTV

A summary is presented of the activities of an Interim Working Party (IWP 11/9), set up by the International Radio Consultative Committee (CCIR) to harmonize the standards being developed for HDTV broadcasting with nonbroadcasting HDTV applications. Imaging applications and characteristics across industries are examined. The discussion covers printing, cinema, electronic cinematography, computer applications, medical images, museums, expositions, education, and military and other special applications. Examples of hardware for nonbroadcast applications are considered     

网络管理环境下移动代理技术应用研究的现状、问题与展望

本文讨论了移动代理技术及其在网管环境下的应用,分析了移动代理技术在网管环境下的应用背景,对移动代理在网管环境下的应用按其实现的功能进行了分类、分析、比较和评估.指出了目前在网管环境下应用移动代理技术存在的问题,给出了在网管环境下开发移动代理应用的建议和一些未来的研究课题.     

NCTU SLT: a socket-layer translator for IPv4-IPv6 translation

Based on Bump-In-the-API (BIA) architecture, this letter proposes a Socket-layer Translator called NCTU SLT that translates IPv4 applications to IPv4/IPv6-capable applications on dual-stack hosts. Like previously proposed approaches, NCTU SLT can translate NAT-friendly applications (e.g., HTTP and TELNET) without modifying the source codes of the IPv4 applications. Furthermore, NCTU SLT has the advantages over the previous approaches for translating non-NAT friendly applications (i.e., SIP and FTP).     

Influence of Network Characteristics on Application Performance in a Grid Environment

In grid computing, a key issue is how limited network resources can be shared by communications by various applications more effectively in order to improve application-level performance, e.g., by reducing the completion time for an individual application and/or set of applications. Communication by an application changes the condition of the network resources, which may, in turn, affect communications by other applications, and thus may degrade their performance. In this paper, we examine the characteristics of traffic generated by typical grid applications, and the effect of the round-trip time and bottleneck bandwidth on the application-level performance (i.e., completion time) of these applications. Our experiments showed that the impact of network conditions on the performance of various applications and the impact of application traffic on network conditions differed considerably depending on the application. These results suggest that effective allocation of network resources must take into account the network-related properties of individual applications.     

The value of ISDN for banking applications

US Bank's experience with a number of applications supported by Northern Telecom's DMS-100 integrated services digital network (ISDN) is discussed. Some of the applications that US Bank has been using, as well as some applications planned for near-term implementation, are described. The current applications supported by ISDN are the centrex telephone; message desk call receptionists; systems network architecture (SNA) host access; automatic teller machines; point-of-sale network; and wide-area networking. Future ISDN applications include support of loan approvals and service kiosks     

Adaptation of Single-user Multi-touch Components to Support Synchronous Mobile Collaboration

Mobile applications, which include calendars, browsers, and interactive maps, are part of our lives nowadays. Most mobile applications are single user; and they do not enable synchronous collaboration among the users. Mobile collaboration enables multiple users in diverse locations to combine synergistically their contributions in a convenient manner. We investigate the potential to create collaborative applications based on existing single user mobile applications. In this work, we propose an adaptation technique based on the reuse of manufacturers’ SDKs (Software Development Kits) to create multi-user prototype applications. In general, adaptation is made manually; nonetheless, we conjecture that some automation is possible. This paper investigates this possibility. More specifically, we hypothesize that if the target SDK’s components of mobile applications comply with certain design guidelines, automatic adaption can be enhanced. We present a reference model and an automatic process to develop high-fidelity prototype multi-user mobile applications by the conversion of multi-touch user interface found on single-user applications. We discuss two examples that illustrate our proposal and provide a quantitative Lines of Code (LOC) comparison of existing approaches.     

云计算环境下的流量控制和负载均衡策略

传统的web应用使用专用的硬件资源,这些硬件资源仅为某种特定的应用提供服务。而在云计算环境下,许多不同的web应用需要共享云平台资源。因此,当将传统的web应用迁移到云平台下时,将会出现一系列的挑战,主要的问题是面对大量不同应用请求时的流量控制和负载均衡控制。基于此,提出了云计算环境下的分布式路由系统Distributed Routing System(DRS),DRS主要用于解决当许多web应用在云环境下同时运行时面临的流量控制和负载均衡问题。实验表明DRS能够有效地转发应用请求到后台轻负载服务器,并且有着较低的时延。     

Mobile Commerce: Framework,Applications and Networking Support

Advances in e-commerce have resulted in significant progress towards strategies, requirements, and development of e-commerce applications. However, nearly all e-commerce applications envisioned and developed so far assume fixed or stationary users with wired infrastructure. We envision many new e-commerce applications that will be possible and significantly benefit from emerging wireless and mobile networks. To allow designers, developers, and researchers to strategize and create mobile commerce applications, we propose a four-level integrated framework for mobile commerce. Since there are potentially an unlimited number of mobile commerce applications, we attempt to identify several important classes of applications such as mobile financial applications, mobile inventory management, proactive service management, product location and search, and wireless re-engineering. We discuss how to successfully define, architect, and implement the necessary hardware/software infrastructure in support of mobile commerce. Also, to make mobile commerce applications a reality, we address networking requirements, discuss support from wireless carriers, and present some open research problems.     

Real-time communication in packet-switched networks

The dramatically increased bandwidths and processing capabilities of future high-speed networks make possible many distributed real-time applications, such as sensor-based applications and multimedia services. Since these applications will have traffic characteristics and performance requirements that differ dramatically from those of current data-oriented applications, new communication network architectures, and protocols will be required. In this paper we discuss the performance requirements and traffic characteristics of various real-time applications, survey recent developments in the areas of network architecture and protocols for supporting real-time services, and develop frameworks in which these, and future, research efforts can be considered     

Network awareness and mobile agent systems

Most current computer applications are insensitive to changing network conditions. With the growing demand for wireless, satellite, and other highly volatile computer communications networks, however, applications that are robust in the presence of network volatility must be designed and built. Network-robust applications are of great interest in military situations today, and we expect that interest to grow in industrial and eventually consumer environments as well. Mobile agents are one way to realize such applications, especially when used in a wireless environment. This article discusses issues and results related to the problem of making computer applications network-aware and reactive to changing network conditions. It contains a short overview of our work on mobile agents as well as a tutorial on network sensing from the agent perspective. Some prototypes of network sensing systems and network aware mobile-agent applications are presented     

OCDMA and Optical Coding: Principles, Applications, and Challenges [Topics in Optical Communications]

We survey the current trends in OCDMA and optical coding through their applications. Although a prerequisite for OCDMA, optical coding distinguishes itself from OCDMA through major applications where codes are not applied to data and carry network-level information other than user identity. After introducing the principles of coding, we discuss OCDMA and its applications, particularly OCDMA PON. Optical coding and its applications are then reviewed.     

Priority-guaranteed MAC protocol for emerging wireless body area networks

The newly emerging wireless body area networks (WBANs) are intended to support both medical applications and consumer electronic (CE) applications. These two types of applications present diverse service requirements. To satisfy both medical and CE applications with a uniform medium access control (MAC) protocol becomes a new challenge for the WBAN. Addressing this problem, a priority-guaranteed MAC protocol is proposed in this paper. In this protocol, data channels are separated from control channels to support collision-free high data rate communication for CE applications. Priority-specific control channels are adopted to provide priority guarantee to life-critical medical applications. Traffic-specific data channels are deployed to improve resource efficiency and latency performance. Moreover, in order to further minimize energy consumption and access latency, an asynchronous wakeup trigger mode is proposed as an enhancement to the priority traffic. Monte Carlo simulations are carried out for performance evaluation. As compared with IEEE 802.15.4 MAC and its improved versions, the priority-guaranteed MAC demonstrates significant improvements on throughput and energy efficiency with a tolerable penalty on latency performance of bursty traffic in CE applications. Therefore, the customized priority-guaranteed MAC satisfies the service requirements of WBAN by making tradeoff among the performances of different applications.     

5G应用创新发展策略研究

我国高度重视5G产业发展,积极推进5G赋能垂直行业数字化转型,5G应用发展环境不断完善,5G应用进入加速导入期。主要分析了5G应用发展环境、国内外现状以及产业融合应用发展存在的问题,并给予产业应用创新发展相关建议,推动网络快速部署,加速行业数字化转型升级,实现数字经济社会新变革。