集线器中继器负责管理基于包的连接，而集线器控制器则提供状态信息和控制操作以支持主机访问。
The hub repeater is responsible for managing connectivity on a per packet basis, while the hub controller provides status and control, and permits host access to the hub.
通过HCI进行蓝牙主机与主机控制器之间通信，可以避免深入研究蓝牙低层传输协议而建立起蓝牙无线连接。
It does not need to study complicated details of Bluetooth specification that create communication between Bluetooth host and host controller via HCI.
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