普及计算终端的自适应性技术研究

The Adaptive Technology of Pervasive Computing Terminal

1 引言 随着计算机技术的深入发展,计算已不再是局限于桌面系统的分离行为,网络计算和移动计算将很快成为人们日常生活的一部分[1].普及计算的目的就在于突破基于桌面系统的计算模式,使人们能够随时随地获得计算服务.在普及计算模式下,PDA和移动电话、家用电器等通用设备,以及用于医疗、军事、娱乐等方面的专用设备将协同工作,以快速、高效和屯便捷的模式为人们提供服务.

In pervasive computing, the terminal's available resources will change dynamically and unpredictably. The terminal should be adaptive to changes in the supply of resources and respond to these changes. The paper analyzes adaptive modes and proposes the adaptive architecture based on system and application collaborated adaptive mode. The architecture based on embedded operating system is flexible and extendable, which makes the adaptive polices in application is platform independent. The paper describes the architecture in detail and demonstrates the performance.