The bearer box does this by implementing the wdp wireless datagram protocol layer of the wap stack 信使单元通过实现wap栈的wdp (无线数据报协议, wireless datagram protocol )层来完成这一工作。
Then it presents the researches of protocols of wap : wdp ( wireless datagram protocol ) , wtp ( wireless transaction protocol ) and wsp ( wireless session protocol ) , and analyze their characteristics of performance . the designing methods and process of remote terminal control system based on wap are introduced , too . finally , this paper analyzes the existing problems of wap applications and predicts the development of wap applications in the future 本论文首先对wap协议栈以及wap应用模型做了介绍;其次着重研究了wap其中的三层协议: wdp ( wirelessdatagramprotocol ) , wtp ( wirelesstransactionprotocol )和wsp ( wirelesssessionprotocol ) ,并分析了它们性能和特点;然后创建了一个基于wap的远程终端控制系统,并且详细阐述了设计过程与方法;最后,对于wap目前应用中存在的问题做了分析并对预测了wap的发展前景。