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z-stack下低功耗节点接收广播包是怎么接收的?

Other Parts Discussed in Thread: Z-STACK, TIMAC

我抓包,看到低功耗节点能接收广播包,父节点是如何把数据转发给低功耗节点的?

第一种可能就是父节点为每一个子节点建立一个MAC_TXOPTION_INDIRECT的发送,但是MCU的缓存能存下这么多的子节点么?

第二种可能就是在MAC层发送时用广播地址+MAC_TXOPTION_INDIRECT,但是我记得这样操作是非法的啊。