Evaluation on interference between Bluetooth and IEEE802.11 systems

摘要

In 2.4GHz ISM band, there are two coexisting wireless communication standards: IEEE 802.11 (WLAN) and IEEE 802.15 (Bluetooth: WPAN). Since products based on these standards are spreading rapidly in the world, the one may interfere with the other when communicating simultaneously in the overlapped service areas. In Konan university, since over 180 WLAN access points have already been installed on the campus, Bluetooth may be used in these service areas. It is necessary to evaluate performance degradation of these systems when interfering. In this paper, first, we evaluate distance dependence of the communication performances while these systems interfering with each other. In the next, we evaluate the communication performances of Bluetooth when the number of interfering WLAN channels increases. In this experiment, frequency hopping range of Bluetooth is blocked in order by the WLAN communications with channels 1, 6, and 10. Significant performance degradations are observed in these experiments.