1. Bluetooth Vishwas Sundaramurthy Low-cost, short range, small form-factor radio links Adhoc networks/links between information appliances

2. History

3. Usage Scenarios Automatic backup synchronization Connect peripherals to PC / LAN E-mail synchronization Hands-free phone Instant photos Interactive conference Ubiquitous internet access

4. Three in One Phone

5. Automatic Backup Synchronization

6. Connect Peripherals to PC / LAN

7. E-mail Synchronization

8. Hands-free Phone

9. Instant Photos and Video Clips

10. Interactive Conference

11. Ubiquitous Internet Access

12. Overview Allows replacement of proprietary cables Adhoc grouping (piconets) Combination of circuit and packet switching Avoids interference using freq hopping spread spectrum and FEC Asynchronous connectionless - data channel (721/57.6kb/s) Synchronous connection oriented - voice (432 kb/s)

13. Radio Interface 1mb/s raw throughput (actual 728 kb/s) 2.402 GHz to 2.480 GHz, frequency hopping 79 hops displaced by 1 MHz RF output signal power of 1 mw (0 dBm, class 3) up to 100 mw 10 meters in low-power standard (100 in high) Time Division Duplex

14. Bluetooth Link Manager Link setup, authentication, link configuration protocols Discover remote LMs Naming/authentication Connection setup Link modes (voice/data)

15. Bluetooth Topology

16. Bluetooth Baseband Each packet (0.635  s) in a different hop freq (1600 hops/s). Link establishment Standby/sniff/park/hold mode Link types Synchronous connection oriented (SCO) asynch connection-less (ACL) Error correction 1/3 FEC, 2/3 FEC and ARQ

17. Form Factor Ericsson Bluetooth Module Ericsson Bluetooth Radio

18. Sources www.bluetooth.net www.bluetooth.com bluetooth.ericsson.se www.nokia.com/phones/bluetooth