Abstract: Location model plays an important role in ubiquitous computing and the Internet of Things，which can help to implement the fusion of physical world and information world.An overview of location models is provided.It focuses on several aspects，including basic principles and approaches of location model，location reasoning，location representation methods，ontology-based models，and geospatial ontology.Especially the most popular ontology-based location models are compared and contrasted.A number of location models are developed specifically for use in pervasive computing，none of which appears to cover adequately unified concept model，rich location logics，powerful reasoning capability.A multidisciplinary intersection approach to researching location model，combining location theory，ontology theory，and geospatial theory，is pointed out in order to obtain a unified location model with powerful reasoning ability.

Key words: ubiquitous computing, context, location model, ontology, reasoning, geospatial

摘要： 位置模型是实现普适计算/物联网环境下物理世界与信息系统融合的核心。从位置模型基本理论和方法、位置推理能力、位置信息表达方法、基于本体位置模型、地理空间本体等方面深入分析了位置模型国内外研究进展，尤其是对现存的一些著名基于本体位置模型进行了比较分析。针对现有位置模型缺乏统一概念模型，普遍存在位置逻辑简单、推理能力弱等问题，指出综合运用位置理论、本体论、地理空间等多学科交叉融合研究手段构建具有推理能力的统一位置模型的研究思路。

关键词: 普适计算, 上下文, 位置模型, 本体, 推理, 地理空间