在高速业务的强烈需求下,时分同步码分多址(TD-SCDMA)系统在空口引入更多的新技术,空口的吞吐量和频谱效率不断得到提高,制约数据业务的瓶颈逐渐转移到连接NodeB和无线网络控制器(RNC)的地面传输资源上来。在详细分析了Iub口用户面、控制面和管理面信息流的基础上,以一个实际网络的话务模型为基础,计算Iub口的业务流量,提出了一种实用的Iub带宽配置原则和带宽计算的方法,并提供了一份不同配置下的传输需求表,可为工程规划设计人员、网络运维人员提供有益的借鉴。
With the urgent demand for high-speed business,many new technologies are introduced into the air interface of the TD-SCDMA system.With improvement of the throughput and spectrum efficiency,the bottleneck in restriction of data services is gradually shifted to the ground transfer resource in connecting Node B to RNC cradio network controller.This paper,based on analysis of the user-panel,control-panel and management-panel information in Iub interface and an actual traffic flow model,proposes the practical principle for Iub interface bandwidth allocation and the bandwidth calculation method.The calculation table provided in this paper could serve as a reference for engineering plan-and-design staff,network operation and maintenance personnel.