Earlier this month, the Bluetooth Special Interest Group (SIG), the organization that oversees the development of new specifications and standards for Bluetooth®, unveiled the latest innovative networking topology. Called Bluetooth Mesh, this new standard features an entire second layer of software that, in a nutshell, abandons the point-to-point communication that Bluetooth connected devices historically utilize for mesh capabilities that enable all points to talk to each other.

许多人可能会感到惊讶地知道这不是蓝牙标准一直在进行的，还是至少在最近的过去。那是因为网状网络对于各种无线拓扑越来越常见，包括螺纹, the newest wireless protocol for smart home networks, andZigBee, a popular wireless standard for short-range low data applications. But creating a mesh network is hardly a one-size-fits-all undertaking.

There are generally two types of mesh networks: Routed mesh and a flooding mesh.

对于前者，个别设备都有指定对话路径。尽管在接近度内的几乎所有蓝牙连接设备都能够进行通信，但特定实体之间的对话遵循从设备到设备的最快指定路由而不是覆盖所有连接的固定装置以达到所需的终点。洪水网格有一点相反，洪水网格网络上的每个设备都可以基本上在连接的固定装置之间基本上发送信号，仿佛使用喇叭。

蓝牙网格标准的原始原型建模了洪水协议，但它在两个前面证明了具有挑战性。第一个挑战是互相混乱，复杂的对话的酝酿，第二个挑战是彼此混乱的，第二个挑战是电力效率的漏极 - 蓝牙SIG自动避免自身的东西。

The long-gestating Bluetooth Mesh combines both mesh network models to deliver a managed flood, which essentially allows similar devices – think all of the Bluetooth-enabled lighting in a home – to communicate with each other in a blanket manner, but not every Bluetooth-enabled device within proximity. Because this new specification has been gestating for so long, it shouldn’t take long for Bluetooth Mesh to proliferate, especially in the realm of the IoT.

For the initial, most immediate use cases, Bluetooth Mesh will likely help improve efficiency and synchronicity of similar devices in the modern connected home, namely IoT-enabled lighting fixtures and kitchen appliances, for starters. But the implications for mesh will likely be much more far-reaching, including helping innovate and improve connectivity in the factory of the future and helping to push the agenda of行业4.0前锋。

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