基于OSGi的GSM远程监控系统实现

智能家庭网关是智能家庭网络的核心,目前影响力较大的服务网关是基于OSGi的服务网关。基于该网关,提出一种智能家电实时监控解决方案——将GSM模块连入网关,采用GSM模块收发短信息的方式监控OSGi服务网关内部各个智能家电的工作情况。     

FollowMeLite：用于普适计算的轻量级中间件平台

普适计算的目标是让环境和计算资源紧密结合，以便更好地为人类服务。为达到这一目标，移动设备和嵌入式设备构成了环境中计算资源的重要组成部分。然而，由于移动设备和嵌入式设备的计算资源有限，网络连接的多样性和不稳定性以及软硬件的异构性，开发用于这些设备的上下文感知应用复杂并且费时，其根本原因是缺乏一个统一的平台支持。为解决这一问题，我们提出了一种用于普适计算的轻量级中间件平台，叫做FollowMeLite。FollowMeLite是整个FollowMe普适计算基础结构中的一部分。它构建在OSGi之上，集成了基于本体的上下文模型和基于工作流的应用模型以及用于适应多种网络连接的通讯服务。通过部署不同的组件模块，FollowMeLite可以方便的适用于多种应用环境。     

基于Zigbee协议的OSGi无线家庭网关设计

设计基于OSGi标准和Zigbee无线通信协议的分布式家庭网关.首先提出基于Zigbee家庭网络的无线组网方案。同时提出无线家庭网关的硬件实现方案,并给出基于OSGI标准的软件开发的步骤,最后分析了家庭网关的实际应用。     

Recoverable Class Loaders for a Fast Restart of Java Applications

We present recoverable class loaders to enable a fast start-up and recovery of Java applications. This is achieved by snapshooting the static state of Java applications namely the class loaders and their associated class objects, which are then recovered during subsequent restarts. Recoverable class loaders are especially useful in the context of mobile applications and mobile services. First, they allow to speed up shutdown and restart of applications for power- and resource-management reasons on resource-restricted mobile devices. Second, services can be much faster rebooted to cure software faults such as memory leaks thereby improving the availability of services. We implemented recoverable class loaders inside the JamVM and the OSGi middleware Oscar. For both cases of use—Java application restart and service recovery—we provide experimental evaluations that show a substantially reduced start-up time from up to 96%.     

统一通信平台集成框架的研究与应用

针对企业应用的集成面临业务、接口、通信协议不兼容,复用率低,成本高等问题,提出一种基于MQ集群技术和OSGi服务框架的解决方案。设计并实现具有良好的可伸缩性、可扩展性、可复用性、支持大负载的统一通信平台集成框架,使该平台通过统一的跨平台服务接口为集成的业务系统提供稳定可靠的通信支持。该框架已经应用在实践中,取得了较好的效果。     

智能家庭网关的OSGi R3实现

介绍了OSGi(Open Service Gateway initiative)的概念,OSGi Release3的服务网关模型,软件层次结构以及Java包定义,最后在经过裁减的Linux上,运用Java虚拟机实现了符合OSGi Realease3规范的智能家庭网关应用。     

基于OSGi和RCP的融合通信客户端的设计与实现

在客户端的设计开发中,松耦合、易扩展、易维护一直是开发者所追求的。本文基于OSGi(openservice gateway initiative)以及Eclipse RCP(rich client platform)技术,分析了融合通信业务的功能特点,并给出客户端系统具体的架构设计,分析了这种设计方式的优势及具体实现过程。最后得出结论:在模块化设计开发越来越流行的今天,OSGi必将得到更多的重视。     

基于OSGi和Web Service的智能用户能量管理平台设计

提出了一种将开放服务网关规范（OSGi）家庭网关技术和Web Service技术相结合的智能用户能量管理平台的设计和实现方案。以用户调用插电式汽车车载OSGi平台内的Web服务为例,描述了系统各功能模块的详细设计。     

基于开放服务网关规范的面向服务高级量测体系

提出了一种基于开放服务网关规范的面向服务高级量测体系(AMI)的设计和实现方案。以Web服务组件作为OSGi平台对外服务发布/订阅的中介,OSGi技术构建的用户与电力公司之间的信息交互平台,面向服务的设计、封装与动态配置符合面向服务影响(SOA)体系架构。详细分析了以服务为导向的高级量测体系的功能部署,并以用户需求响应为例,采用MyEclipse搭建仿真系统,验证了该方案的可行性。     

Security benchmarks of OSGi platforms: toward Hardened OSGi

OSGi platforms are extensible component platforms, i.e. they support the dynamic and transparent installation of components that are provided by third party providers at runtime. This feature makes systems built using OSGi extensible and adaptable, but opens a dangerous attack vector that has not been considered as such until recently. Performing a security benchmark of the OSGi platform is therefore necessary to gather knowledge related to the weaknesses it introduces as well as to propose enhancements. A suitable Vulnerability Pattern is defined. The attacks that can be performed through malicious OSGi components are identified. Quantitative analysis is then performed so as to characterize the origin of the vulnerabilities and the target and consequences of the attacks. The assessment of the security status of the various implementations of the OSGi platform and of existing security mechanisms is done through a metric we introduce, the Protection rate (PR). Based on these benchmarks, OSGi‐specific security enhancements are identified and evaluated. First recommendations are given. Then evaluation is performed through the PR metric and performance analysis. Lastly, further requirements for building secure OSGi platforms are identified. Copyright © 2008 John Wiley & Sons, Ltd.