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KyungPook National University

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Presentation on theme: "KyungPook National University"— Presentation transcript:

1 KyungPook National University
Bluetooth Low Energy - Fundamentals KyungPook National University CSOS Hye Youn Kang

2 CONTENTS 01 Introduction 02 Single Mode vs Dual Mode Devices 03 Bluetooth Smart Marks 04 LE Fundamentals 05 Architecture 06 Summary

3 01 Introduction Ultra low power consumption 2. Focused on transferring very short pieces of information 3. Connection time is so low that its easier to reestablish the connection version or higher

4 02 Single Mode vs Dual Mode Devices
1. Bluetooth devices categorized 3 types BR/EDR Devices Single Mode LE Devices Dual Mode Devices

5 02 Single Mode vs Dual Mode Devices
2. Use case of Dual Mode devices Listening music classic Bluetooth Run away Alert BLE

6 02 Single Mode vs Dual Mode Devices
3. Compatibility between different categories of devices BR/EDR BR/EDR

7 02 Single Mode vs Dual Mode Devices
3. Compatibility between different categories of devices Single mode LE Single mode LE

8 03 Bluetooth Smart Marks Bluetooth smart (Sensor-Type Devices) Collect a specific piece of information Contain single mode LE radio Conform to Bluetooth 4.0 or higher

9 03 Bluetooth Smart Marks Bluetooth smart Ready (Hubs) Receive data sent from the classic Bluetooth and Bluetooth Smart devices Contain Dual mode radio User can update the functionality for a Bluetooth Smart device on a Bluetooth Smart Ready device.

10 03 Bluetooth Smart Marks

11 04 LE Fundamentals Frequency Bands Operates in 2.4GHz ISM band LE uses 40 channels (BR/EDR uses 79 channels) LE uses 3 channels for advertising and sending data 2. Mostly Off Technology Remain off most of the time and switch on when they need to transmit some data

12 04 LE Fundamentals 3. Faster Connections BR/EDR LE 32 channels 20 ms

13 04 LE Fundamentals 4. Reduced Functionality Not mandatory to implement both transmitter and receiver No support for voice channels No support for Master/Slave role switch No need for continuous polling of the link No support for power saving modes

14 Time to transmit/receive is lesser Savings in power consumption
04 LE Fundamentals 5. Shorter Packets Short Packet Time to transmit/receive is lesser Savings in power consumption

15 04 LE Fundamentals 6. Reduced Dynamic Memory Footprint Shorter packets Shorter headers Simple Protocol Uniform Packet Format

16 04 LE Fundamentals 7. Optimized Power Consumption of Peripherals Central Peripheral

17 04 LE Fundamentals 8. No Need for Continuous Polling Just shut down the link and recreate it whenever needed 9. Backward Compatibility with BR/EDR Dual mode devices are backward compatible with the existing devices

18 05 Architecture

19 06 Summary

20 ThankYou

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