中文摘要：

该文的目的是明确资源受限Web服务中的技术难点和未决问题，以便研究人员进行创新性研究．资源受限Web服务是服务计算与无线网络、移动计算和嵌入式系统相融合的产物．它是小型终端设备访问云计算平台的有效手段，也是一种重要的物联网支撑技术，在移动电子商务、现代医疗、智能家庭、制造业自动化等领域有广阔的应用前景．文中首先介绍了资源受限Web服务的概念，分析了它的起源、发展趋势和技术特点；然后从服务构件、开发工具、中间件、软件框架、标准规范和应用人手，对现有工作进行了评述，分析了其中的技术难点，提出了今后的几个主要研究方向．

英文摘要：

The purpose of this paper is to identify the technical difficulties and open issues of resource constrained Web services, in order that the researchers can conduct innovative researches. Resource constrained Web services combine new technologies of service computing with wireless networks, mobile computing and embedded systems. It is an important enabling technology of the internet of things and an effective means of accessing cloud platform with small terminal equipments. It has broad application prospects in mobile e-business, modern healthcare, smart home and manufacturing automation et al. This paper presents the concept of the resource con- strained Web services, analyzes its origin, technical features and development trends, then re- views the representative researches on service components, development tools, middleware, frameworks, specifications and applications. The contribution of this paper is that it presents a survey on resource constrained Web services and gives the research directions.