快速发展远程蓝牙信标的解决方案

　　快速发展远程蓝牙信标的解决方案

　　信标技术旨在在短时间内向用户提供信息，例如在零售商店或购物中心。虽然对基于几百米传输信标能力的新兴基于位置的应用程序感到兴奋，但开发者受到了传统的蓝牙低能量（无线）收音机的限制。

　　为了解决远程信标应用中出现的新问题，开发人员需要能够提供更高传输功率输出的抽象解决方案，以及能够加速这些设计开发的开发工具。荷兰半导体和硅实验室的蓝牙收发器通过在一个包中结合蓝牙无线电和功率放大器来满足这一需求。

　　本文将描述什么是信标，讨论设计选项，并提供一些解决方案，以帮助开发人员快速地使用远程启用的信标实现并运行。

　　Beacons beckon for simple， long-range implementations

　　Beacon technology offers a relatively simple mechanism for building proximity-aware services. By periodically transmitting a unique identifier and other data， beacons advertise their presence within some limited physical area. By using Bluetooth wireless communications， beacon applications can exploit the nearly universal support for Bluetooth in smartphones and other mobile devices. Running on these mobile devices， app developers can exploit the presence of a specific beacon signal to present information pertinent to the mobile user’s physical location. For example， within a retail store， an app can use beacons to detect when an individual approaches a particular section or counter within a store and display relevant store coupons.

　　Although these short-range retail applications were among the first uses of beacons， long-range beacon opportunities are emerging in broader segments including asset management， transportation， mass transit， airline terminals， large events， and wherever proximity-aware services can create greater efficiency of movement of vehicles， packages， or individuals. In serving wide physical areas， however， suitable beacon hardware designs require the ability to advertise at ranges well beyond those supported in retail beacons. Yet， hardware designers find some fundamental constraints in extending the range of their wireless systems.