International Journal of Engineering and Technology

IEEE 802.11 is a standard that makes use of CSMA/CA to allow WLAN communication while sharing the channel in competitive way. However, nodes may face Hidden Collision (HC) when they are sharing the spectrum with other nodes that are in, the same area. This is likely to be the case, since the standards, such as Zigbee and Bluetooth, use the same spectrum frequency (i.e the ISM band). In this paper we study the effect of HC, caused either by Zigbee and Bluetooth, on the performance of WLAN nodes that use CSMA/CA. To address this effect we propose a solution based on adding a transient state to the node behavior. Computation results show the effectiveness of our solution in term of throughput gain and time distribution.