A Collision Resolution Technique for Robust Coexistence of Multiple Bluetooth Piconets

Frequency collision caused by coexistence has become a critical issue with the increasing deployment of wireless networks in the unlicensed frequency band. Most collision avoidance schemes developed for the coexistence of Bluetooth and WLAN are not applicable to multiple coexisting Bluetooth piconets due to constant frequency hopping in Bluetooth. Relying on a blind hop timing and frequency estimation algorithm, in this paper we propose a collision resolution technique that resolves collided data packets without retransmission, thus enabling robust coexistence of multiple Bluetooth piconets. Simulation results demonstrate the effectiveness of this technique.