【摘要】 无线数据业务具有广泛的应用需求。基于有线基础网络,提出了可以覆盖全市范围的无线IP网络的网络层设计方案。首先介绍了系统结构和各组成部分,详细介绍了系统控制中心(SCC)和业务处理中心(SPC)的功能,并给出了SPC详细的业务处理流程。随后,分析了移动终端切换时的切换过程,并通过模拟实验证实了该方案的可行性。该方案是对原有有线网络进行了扩展,支持无线IP终端在全网内的移动接入,它对现有网络的改动较小,支持多部门共享专用无线资源等特点。更多还原

【Abstract】 The requirement of wireless data service is applied widely.Based on wired infrastructure network,this article presents a network layer design scheme which can provide wireless IP network coverage in the city.Firstly the architecture of wireless subnet system is presented,and subsequently the function and procedure of System Control Center(SCC) and Service Process Center(SPC) are discussed.With fewer modifications to existing network,this scheme creates wireless subnet,which can be shared by many units and mobile terminals can access network services through it.更多还原