【摘要】 随着面向服务体系结构的发展和Web服务技术的日益成熟,对现有的LBS体系框架提出了新的要求。本文以服务共享为核心,给出了包括数据层、服务层和应用层的LBS开放体系框架。对LBS中基本服务和复杂服务进行了讨论,数据获取,数据分析和移动终端的位置计算作为服务为各类LBS应用所共享。研究了通过服务组合技术对复杂服务和业务流程建模,以及服务流程执行中服务节点的具体实例选择。最后通过一个原型系统的实现,对本文研究的可行性和有效性进行了验证。更多还原

【Abstract】 The architecture of location-based service should be developed to meet the need of SOA and Web services. This paper proposes an open architecture of LBS based on services sharing, which composed of data tier, service tier and application tier. The basic service and complex service in LBS is discussed and data visiting, analyzing and computing can all be visited as services by LBS applications. Services composition is proposed to model the complex service and workflow, and then the service instance selection is implemented in the execution of process. In the end a prototype system is given to validate the feasibility of the architecture.更多还原