Content-Seamless Communications in Ubiquitous Computing Networks

普适计算网络中的内容无缝通信

• 批准号: 13650442
• 负责人: YAMADA Shigeki
• 金额: $ 2.18万
• 依托单位: National Institute of Informatics
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650442/
• 关键词: Network architecture; User context; Context awareness; Information delivery service; Privacy protection; Mobile agent; Performance evaluation; 性能評価; プライバシ保護; コンテクスト・アウェアコンピューティング; SIP; all IPネットワーク; サービス; メディア変換; 通信コンテクスト; 3GPP; CC; PP

This research project aims at establishing the basic technologies associated with the following three technical issues to realize ubiquitous computing networks the environment-adaptive personal communications architecture, the context-aware information delivery network architecture and systems, and the privacy protection technologies.(1)An environment-adaptive personal communications (EAPEC) systemAn environment-adaptive personal communications (EAPEC) system is proposed that accepts communications from senders, automatically selects the most appropriate communications device, medium, and service for the receiver, converts the sender's message into the selected form, and forwards the converted message to the receiver. The EAPEC can easily be implemented by adding functional components of five types to the 3GPP-based all IF network: The EAPEC architecture is evaluated in terms of call-setup times by theoretical analysis and simulation. Performance analysis indicates that the performance … More of application servers and degrees of server utilization greatly affects the call-setup times while the IP-network delay does not have much effect under practical conditions.(2)Context-aware information delivery network architecture and systemsContext-aware computing is a requisite to achieve "invisibility" in ubiquitous computing, where user context such as the user's location, time, activity status, activity history, and preferences are automatically captured and analyzed by computers to provide users with relevant content and services. Two types of network architectures are proposed that use. UMTS Release 5 architecture and wireless LAN suitable for context-aware information delivery services. The first type of network architecture is the NCA (network-centric architecture) and the second is the ECA (end-user-centric architecture). The two architectures are modeled with a queuing network and their response times are compared through theoretical analysis and simulation. The results indicate that with low-performance servers, the response times of the ECA are generally shorter or almost the same as those if the NCA. However, with high-performance servers, the response times of the NCA are generally shorter except during high server utilization.(3)Privacy protection technologiesA mobile agent-based privacy model characterized by two basic ideas is proposed. First, the model encapsulates personal data and the associated user's preferences into a privacy capsule. The purpose of encapsulation is to hide the data and prohibit it from flowing to the world outside of the capsule and to check the user's preferences for the personal data every time it is accessed. As a second feature, the model allows mobile agents to migrate into the privacy capsule, to execute necessary processes referring to the personal data, and to generate execution results to be utilized by the outside world. The mobile agent mechanism provides a robust and effective solution for enabling service execution while keeping the personal data hidden inside the privacy capsule. Less

本研究计画旨在建立以下三个技术议题的基础技术，以实现普适计算网路：环境适应性个人通讯架构、情境感知资讯传递网路架构与系统、以及隐私保护技术。(1)An环境自适应个人通信（EAPEC）系统提出了一种环境自适应个人通信（EAPEC）系统，该系统接受来自GPRS的通信，为接收方自动选择最合适的通信设备、介质和服务，将发送方的消息转换为所选择的形式，并将转换后的消息转发给接收方。通过在基于3GPP的全IF网络中添加五种类型的功能组件，可以很容易地实现EAPEC：通过理论分析和仿真，在呼叫建立时间方面对EAPEC架构进行评估。性能分析表明， ...更多信息 应用服务器的数量和服务器利用率对呼叫建立时间有很大影响，而IP网络延迟在实际情况下没有太大影响。（2）上下文感知的信息传递网络体系结构和系统上下文感知计算是实现普适计算中的“不可见性”的必要条件，其中诸如用户的位置、时间、活动状态、活动历史和偏好的用户上下文被计算机自动捕获和分析以向用户提供相关内容和服务。提出了两种类型的网络架构，使用。UMTS Release 5架构和无线LAN，适用于上下文感知信息传递服务。第一种类型的网络架构是NCA（网络中心架构），第二种是ECA（最终用户中心架构）。用排队网络对这两种结构进行建模，并通过理论分析和仿真比较了它们的响应时间。结果表明，与低性能的服务器，ECA的响应时间一般较短或几乎相同的那些，如果NCA。但是，对于高性能服务器，NCA的响应时间通常较短，除非在高服务器利用率期间。（3）隐私保护技术提出了一个基于移动的Agent的隐私模型，该模型具有两个基本思想：一是基于Agent的隐私保护技术;首先，该模型将个人数据和相关用户的偏好封装到隐私胶囊中。封装的目的是隐藏数据并禁止其流向胶囊外部的世界，并在每次访问时检查用户对个人数据的偏好。作为第二特征，该模型允许移动的代理迁移到隐私胶囊中，以执行参考个人数据的必要处理，并生成要由外部世界利用的执行结果。移动的代理机制提供了一种健壮且有效的解决方案，用于在使服务执行的同时保持个人数据隐藏在隐私胶囊内。少

项目成果

Shigeki Yamada, Eiji Kamioka: "Design of an Environment Adaptive Architecture for Personal Communications"Proceedings of International Conference on the Internet and Multimedia Systems and Applications (IMSA 2001), 13-16 August, Honolulu, Hawaii, USA, 200

Shigeki Yamada、Eiji Kamioka：“个人通信环境自适应架构的设计”国际互联网和多媒体系统及应用会议论文集 (IMSA 2001)，8 月 13-16 日，美国夏威夷檀香山，200

Eiji Kamioka, Shigeki Yamada: "EAPEC : Environment-Adaptive Personal Communication Architecture using SIP"Invited Tall, Lecture Note of the International SIP Conference (SIP2002), 15-18 January, Paris, France, 2002.

Eiji Kamioka、Shigeki Yamada：“EAPEC：使用 SIP 的环境自适应个人通信架构”邀请 Tall，国际 SIP 会议 (SIP2002) 的讲义，2002 年 1 月 15 日至 18 日，法国巴黎。

Eiji Kamioka, Shigeki Yamada: "Environment-Adaptive Personal Communication Realizing Ubiquitous Computing Network"The Transactions of IEICE B (in Japanese). Vol.J85B, No.5. 755-767 (2002)

Eiji Kamioka、Shigeki Yamada：“环境自适应个人通信实现普适计算网络”IEICE B 的交易（日文）。

Eiji Kamioka, Shigeki Yamada: "Environment-Adaptive Personal Communications Realizing Ubiquitous Computing Networks"Electronics and Communications in Japan, Part I : Communications. Vol.87, No.1. 34-47 (2004)

Eiji Kamioka、Shigeki Yamada：“实现无处不在的计算网络的环境自适应个人通信”日本电子和通信，第一部分：通信。

上岡英史, 山田茂樹: "SIPネットワークにおけるEAPEC(Environment-Adaptive Personal Communications)の性能評価に関する検討"情報処理学会モバイルコンピューティングとワイヤレス通信研究報告. 2001-MBL-18-16. 1-7 (2001)

Hidetoshi Kamioka、Shigeki Yamada：“SIP 网络中的 EAPEC（环境自适应个人通信）性能评估”日本信息处理协会移动计算和无线通信研究报告 2001-MBL-18-16。 ）