IEEE 802.15.4是由IEEE 802.15工作组负责维护的一项技术标准，它为低速率无线个域网络（LR-WPAN）定义物理层和介质访问控制（MAC）规范。因此，它提供一个通用的标准MAC层，可以作为协议（包括ZigBee和Thread）的基础，然后定义堆栈的上层。OpenThread是一种Thread®标准的开源实现，基于广泛支持的IEEE 802.15.4无线标准。
OpenThread协议可实现所有的Thread网络层（通过MAC安全、Mesh Link Establishment、网状路由支持IPv6、6LoWPAN、IEEE 802.15.4）和设备角色，以及边界路由器支持。它需要的内存容量较小，并且具有高度可移植性。它非常适合基于低功耗无线方式进行设备间通信的IPv6家庭应用。
STM32WB双核无线MCU基于意法半导体同类产品中最优秀的超低功耗STM32L4微控制器，通过OpenThread协议栈支持IEEE 802.15.4通信协议的单路和并发模式，满足了广泛的物联网应用需求。它是一种Thread认证的组件。
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We asked Nathalie the following questions: - Why is the STM32WB the best product for 2.4GHz design? - How can the STM32WB accelerate customer development? - How can STM32WB help tackle hidden system cost? - Can we see a quick demo?
推荐资源
AN5289 - Building wireless applications with STM32WB Series microcontrollers
Download PDFAN5247 - Over-the-air application and wireless firmware update for STM32WB Series microcontrollers
Download PDFAN5129 - Low cost PCB antenna for 2.4GHz radio: meander design for STM32WB Series
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