摘要： 针对服务优先级不同、服务质量不同、最大限度满足服务质量要求的空间信息引擎，提出一个新的空间信息服务引擎架构，该引擎能识别服务请求的上下文信息，运用不同的服务请求堆栈管理策略和服务请求分发策略，以满足当服务请求优先级别不同时，优先级高的服务优先得到服务；当同样优先级时，服务请求类型服务质量要求高的请求优先得到服务。

关键词: 负载均衡, 服务质量, Web地理信息系统, 空间信息服务引擎, 基于位置服务

Abstract: In order to develop spatial information service engine, which can try its best to meet the Quality-of-Service(QoS) of service requirements, a new Spatial Information Service Engine(SISE) framework is designed. In SISE, service requirements contexts are identified and different policies are used in management of service requirement queues and in the service requirements distribution. In order to meet the requirements of higher priority service, the higher QoS service requirement must be served at first.

Key words: load balancing, Quality-of-Service(QoS), Web GIS, Spatial Information Service Engine(SISE), location-based service

中图分类号: 

• TP393