藍牙5物聯網技術

　　最新版本的藍牙標準，藍牙5，設置提供了廣泛的增強功能，如更長的范圍，更高的速度和擴展支持無連接服務。這是一個重大的升級，今天的藍牙4.2技術，并將開辟新的物聯網應用程序的智能環境。

　　此舉允許企業和開發者帶來一個可訪問的，互操作的物聯網。新標準規定的模式與現有設備的四倍的范圍內，通過降低數據速率為500 kbps和250 kbps的，以允許更多的傳感器被可靠地使用在家附近。這個范圍不僅允許更多的控制器和傳感器之間的距離，但也提供了一個更強大的終端設備的鏈接。它還允許兩倍的數據速率為2 Mbps的，以允許更高質量的音頻流從監視器或無線揚聲器，以改善用戶體驗。

　　Market research estimates that Bluetooth will be in more than one-third of all installed IoT devices by 2020， driven by the ubiquitous implementation in smartphones to act as controllers. However， the requirement for a Bluetooth 5 chip in a smartphone as the controller or for streaming to a wireless headset is very different from the requirements for the Internet of Things. These IoT applications also need more sophisticated power management to maximize the battery life of the system， so an optimized DC-DC converter is an increasingly common element of the SoC.

　　The designs now being delivered to chip designers accommodate the requirements of SoC devices for IoT. For example， the RivieraWaves Bluetooth IP platform consists of a hardware baseband controller， a digital modem， and a detailed software protocol stack. The stack encompasses the Link Layer up to the GAP/GATT plus a set of Services and Profiles. The Riviera technology has already been used for previous generations of Bluetooth 4.2 devices from NXP such as the MKW31Z256.