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Applications And Capabilities Of Low Energy Bluetooth

1220 words - 5 pages

Table of content

No Sub Topic Page
1.0 Introduction 2
2.0 The Low energy Bluetooth applications 3 - 4
3.0 Data communication concepts related 5 - 6
4.0 Low energy Bluetooth Capabilities 7
5.0 Example Low energy Bluetooth technology used in market 8
6.0 Advantages and disadvantages 9
7.0 Conclusion 10
8.0 References 10

1.0 Introduction

Low Energy Bluetooth, Bluetooth LE, or BLE, marketed as Bluetooth Smart, is a wireless personal area network technology designed and marketed by the nonprofit, non-stock corporation Bluetooth Special Interest Group aimed at novel applications in the healthcare, fitness, security, and home entertainment industries. Compared to "Classic" Bluetooth, BLE is intended to provide considerably reduced power consumption and cost while maintaining a similar communication range.
Bluetooth LE was originally introduced under the name Wibree by Nokia in 2006 It was merged into the main Bluetooth standard in 2010 with the adoption of the Bluetooth Core Specification Version 4.0.
Mobile operating systems including iOS, Android, Windows Phone and BlackBerry, as well as OS X and Windows 8, natively support Bluetooth low energy. The Bluetooth SIG predicts more than 90 percent of Bluetooth-enabled smartphones will support the low energy standard by 2018

Figure 1 : low energy Bluetooth technology

2.0 The Low energy Bluetooth applications

- Low energy Bluetooth technology allows enhancement of devices like watches, tooth brushes or toys with Bluetooth wireless technology. It also provides the ability for developers to incorporate new functionalities into devices already enabled by Bluetooth technology such as sports & fitness, health care, human interface (HIDs) and entertainment devices. For example, sensors in pedometers and glucose monitors will only run low energy technology.

2.2 HOW

- Low energy Bluetooth uses a different set of technical and radio techniques to ensure very low power consumption. The data protocol was changed to create low-duty-cycle transmissions or a very short transmission burst between long periods. In addition to extremely low-power sleep modes, the low duty cycle allows a Bluetooth Smart product to operate for many years on a coin cell.

- BLE still operates in the same ISM, license-free, 2.4- to 2.483-GHz frequency band as standard Bluetooth. However, it uses a different frequency-hopping spread-spectrum (FHSS) scheme. Standard Bluetooth hops at a rate of 1600 hops per second over 79 1-MHz-wide channels. BLE FHSS employs 40 2-MHz-wide channels to ensure greater reliability over longer distances. Standard Bluetooth offers gross data rates of 1, 2, or 3 Mbits/s, while BLE’s maximum rate is 1 Mbit/s with a net throughput of 260 kbits/s. BLE also uses Gaussian frequency shift keying (GFSK) modulation.

- Other BLE features include a 0-dBm (1 mW) power output and a typical maximum range of 50 meters. Latency measures only 6 ms. The combination of an adaptive...

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