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对Zigbee标准中的树型结构进行了扩展,提出了一种两级树的网络模型。该模型将整个网络分为两级,以主协调器和相关节点组成一个第一级树;将第一级树中的若干路由器作为从协调器,与周围孤立节点构建若干个第二级树,共同组成一个具有两级树拓扑结构的网络。该模型不仅起到了扩大网络规模的作用,而且路由器可以直接根据数据包的目的地址进行路由,不需要构建任何与路由相关的表项,从而减少了资源的消耗。
This paper extends the tree structure in the Zigbee standard and proposes a two-level tree network model. The model divides the whole network into two levels, and forms a first-level tree with the main coordinator and related nodes. Using several routers in the first-level tree as the secondary coordinator and constructing second-level trees with isolated nodes around, Together form a network with two-level tree topology. The model not only plays the role of expanding the network size, but also can directly route the data packets according to the destination address of the data packets. It does not need to build any routing-related entries, thus reducing the resource consumption.