Comparision of radio links inside an Android device and examples for applications

Useful radio links inside an Android Smart Phone

A lot of people are not aware about other radio links inside a Android phone parallel to 3G and 4G radio link for voice and data communication. To explain the latest technologies we will use the Motorola Razr Droid, Google Nexus Prime and Sony Ericsson ARC S for comparison. Within 30 minutes we will focus on the non cellular radio links of these three phones. Nevertheless I would like to mention, that the Motorola Razr Droid is one of the first Smart Phones that is using the American GPS and the Russian Glonass for navigation. The non cellular radio links are called NFC (Near Field Communication), Bluetooth 2.1, Bluetooth 3.0, Bluetooth Smart (former called Bluetooth Low Energy or Bluetooth 4.0), ANT+ and WIFI (several standards). With all radio links you can make two way data communication. With some of them you can make audio communication as well. The differences are often in the communication speed, the range and the power consumption. For some applications like an electronic wallet or access control to a building or a car a short range is a big benefit. The communication speed is often inverse to the power consumption. With the range it is close the same. The new Bluetooth Smart is a perfect compromise between range, power consumption and communication speed. Anyhow, we will compare them all and give an outlook and tips which communication channel is preferred for which application. Right now no Smart Phone is supporting all upper mentioned radio links. This will change quickly. The next generation of high-end phones will supported them all.

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