1. Slide 1 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of Bluetooth on 802.11b and vice-versa

2. Slide 2 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. BT 802.11b 15 dBm 802.11b antenna 0 dBm Bluetooth antenna Chariot Throughput SW (Server) Test Setup 10, 20, 30 m distance 1 m 6 m Interference area Chariot Throughput SW (End Point client)

3. Slide 3 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact on Bluetooth

4. Slide 4 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of 802.11 on BT, antennas 6 inches apart Throughput reduction.9Mbps/.56Mbps = 16% 802.11b turned on here, off here

5. Slide 5 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of 802.11 on BT, antennas 12 inches apart Throughput reduction.8Mbps/.56Mbps = 14% 802.11b turned on here, off here

6. Slide 6 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact on 802.11b

7. Slide 7 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of BT on 802.11, antennas 6 inches apart Bluetooth turned on here Throughput reduction.4Mbps/2.02Mbps = 20%

8. Slide 8 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of BT on 802.11, antennas 12 inches apart Throughput reduction.4Mbps/2.2Mbps = 18% Bluetooth turned on here

9. Slide 9 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Beyond one foot...

10. Slide 10 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of BT on 802.11b, 802.11b AP 10 meters away Bluetooth turned on here Throughput reduction.1Mbps/2.1Mbps = 5%

11. Slide 11 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of BT on 802.11b, 802.11b AP 20 meters away Bluetooth turned on here Throughput reduction.3Mbps/2.1Mbps = 14%

12. Slide 12 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Impact of BT on 802.11b, 802.11b AP 30 meters away Bluetooth turned on here Throughput reduction.4Mbps/2.6Mbps = 15%

13. Slide 13 doc.: IEEE COEX 02/019r0 Submission May 2002 Art Astrin, Apple Computer Inc. Conclusion Interruption of the communications is the precursor to war Phantom Menace, a Star Wars movie A prescription for a peaceful coexistence in communication standards: Do not affect my throughput by more than 10%. Or I will jam you and you will therefore suffer a throughput loss as well. And in this game, lack of coexistence means that there are no winners…only losers.