LE extended ADV
时间: 2023-11-19 19:06:53 浏览: 124
LE extended ADV是指在蓝牙5.0及以后版本中引入的一种扩展广播方式。在LE extended ADV中,设备会在Primary Advertising Physical Channel上发送一个叫做EXT_ADV的包,这个包携带了一些信息,其中包含了下一个与之关联的包所在的Secondary Advertising Physical Channel。这个Secondary Advertising Physical Channel不再是固定的37、38、39通道,而是可以是其他37个通道中的一个,具体由EXT_ADV包决定。大多数的扩展广播包都是以ADV_EXT_IND(Primary) + AUX_ADV_IND(Secondary)的形式组织的,扫描端需要接收到ADV_EXT_IND包后,再接收AUX_ADV_IND包,完成数据解析,才能了解这个扩展广播的含义。LE extended ADV用于发送超长广播包,在第二广播物理信道。\[1\]\[2\]\[3\]
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