【摘要】 本文介绍了一种基于分层的移动位置相关查询模型．通过分层,各层协同并自主的完成用户所需要的服务,提出采用移动位置服务器来实时跟踪用户当前位置,预见用户未来的路线,从而降低了位置更新代价,保证了查询结果的时效性,并对此模型的逻辑结构和关键技术进行了深入的分析和研究．更多还原

【Abstract】 This paper introduces a Multiple-layer Mobile Location-dependent Query Processing Model,in which multiple layers coordinate to finish the request from Mobile Client.A mobile location server is proposed in the model to track the current location of Mobile Client,and compute mobile route of Mobile Client in the future. This model minimizes the location update cost and provides efficient query result.Some cost-benefit analysis and research involving logic structure and key technology are also discussed.更多还原