Research on Recovery Technology of Mobile Host(MH) for Mobile Database System 移动数据库系统中移动主机(MH)的故障恢复技术研究
In many cases, mobile host needs to obtain accurate or approximate location information in the network, i.e.needs a location service. 在许多情况下,移动主机(MH)需要获得网络中其他移动主机(MH)精确或概略的位置信息,即需要一种位置服务。
In AdHoc network, when two mobile host in each others communication range, they can direct communication. 在AdHoc网络中,当两个移动主机(MH)在彼此的通信覆盖范围内时,它们可以直接通信。
Keeping the communications is wanted when a mobile host moves between subnets. 当一个通信主机在不同的子网间移动时,希望在进行切换的时间段内仍能保持通信的连贯和通信的性能。
At the same time in each module are introduced in the queue mechanism, for mobile transaction processing is more intelligent, smooth solution to the mobile host mobility, disconnection and area conversion problems. 同时在各个模块中引入了队列机制,对移动事务的处理更加智能化,顺利的解决了移动主机(MH)的移动性、断接性和过区转换等问题。