终端业务上下文的定义方法跟业务模型terminalserv.pdf

第 32 卷第 3 期 电 子 与 信 息 学 报 Vol.32No.3 2010 年 3 月 Journal of Electronics Information Technology Mar.2010 终端业务上下文的定义方法及业务模型 芮兰兰 孟洛明 邱雪松 (北京邮电大学网络与交换技术国家重点实验室 北京 100876) 摘 要：该文针对业务上下文仅关注业务质量较少考虑用户终端环境的现状，提出终端业务上下文的概念，为普适 业务的开展提供必要的信息支撑。给出一种终端业务上下文的通用定义方法，该方法可以提取各类业务场景中终端 环境的特征参数，使其形成可表示、可获知的上下文。提出基于终端业务上下文的业务模型，给出上下文的存储和 使用方法。最后通过一个典型的普适业务接续场景验证了上述定义方法和业务模型。结果表明，该方法可以有效提 取普适业务所需的上下文信息；基于该模型，业务平台能够动态适配异构的终端环境，为用户提供个性化终端呈现 和接续服务。 关键词：通信网络；终端业务上下文；定义方法；业务模型；终端业务环境 中图分类号：TN915.07 文献标识码：A 文章编号：1009-5896(2010)03-0660-06 DOI:10.3724/SP.J.1146.2009.00181 Terminal Service Context Definition Method and Service Model Rui Lan-lan Meng Luo-ming Qiu Xue-song (State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China) Abstract: While current research on service context mainly focuses on service quality and seldom consider personal terminal environment, a terminal environment related context named Terminal Service Context is proposed, which could provide essential information support for ubiquitous services. A general terminal service context definition method is provided, which could draw feature parameters of terminal environment for all kinds of service scenarios, and form formalized and retrievable contexts. Furthermore, service model based on the terminal service context is given and the storage and application methods of the context are analyzed. Finally, the proposed definition method and service model are verified by a typical ubiquitous service scenario. The results show that the method can extract the contex