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为了实现PDT系统的数据交换,本文提出了一种双中心加点对点的交换拓扑方案,交换中心和操作维护中心作为两个中心节点与各个基站直接通信,同时基站与基站之间也可以点对点的传输业务数据,从而降低交换中心的工作负荷,减少通信带宽占用,提高交换的实时性。
In order to realize data exchange of PDT system, this paper proposes a dual-center plus point-to-point switching topology. The switching center and O & M center communicate directly with each base station as two central nodes, and point-to-point transmission between the base station and the base station is also possible Business data, thereby reducing the work load of the switching center, reducing communication bandwidth occupation, improve the real-time exchange.