LWIS——基于位置的无线信息服务应用模型

LWIS——A Location-dependent Wireless Information Service Model

应用的匮乏和不易使用性制约了无线信息服务的发展,迫切需要新的适合移动环境的应用模型。基于位置的无线信息服务(LWIS)模型结合移动定位、移动GIS、移动通信技术,以用户位置为线索构建应用逻辑,改善系统易用性。该文提出了基于用户位置构建服务应用的思想,分析了LWIS系统结构框架、关键技术、终端平台设计等问题,并介绍了一个可运行的LWIS终端原型范例。

As lack of a killer applica ti on and uncomfortable accessibility make the most important hurdle for the prosp erity and popularity of wireless information services,it is necessary to develo p a more sophisticated application model that suits for the mobile computing env ironment satisfyingly.LWIS,or Location-dependent Wireless Information Servi ce,which integrates mobile positioning,mobile GIS and mobile communication,is designed to develop user's -location-based and easy-to-access applications .This article discusses motives of location-dependent services,analyses LWIS 's architecture,fundamental techniques and the development of LWIS information terminal,and present s a working prototype of LWIS information terminal.