Experimental assessment of wireless coexistence for 802.15.4 in the presence of 802.11g/n

Dynamic performance of IEEE 802.15.4 devices under persistent WiFi traffic

“…Furthermore, the performance of IEEE 802.15.4 devices under WiFi interference are often evaluated based on limit parameters i.e. Packet Reception Rate [3,10,11,12], which in our experiments, we show that it does not exhibit the actual happenings in the wireless channel effectively. Hence we propose the use of Packet Reception Rate with Clear Channel Assessment to distinguish WiFi interference more robustly.…”

“…Coexistence issues between IEEE 802.15.4 and IEEE 802.11 standards are reported in [3,10,11,12]. The interaction behavior between the two standards boils down to three factors; adequate frequency separation, sufficient distance resulting to an improved Signal to Interference Ratio (SIR), and overall occupancy of the wireless channels [11].…”

“…The interaction behavior between the two standards boils down to three factors; adequate frequency separation, sufficient distance resulting to an improved Signal to Interference Ratio (SIR), and overall occupancy of the wireless channels [11]. IEEE 802.15.4 is found to impact IEEE 802.11's throughput [3,12].…”

“…WiFi (IEEE 802.11 bgn) devices with higher transmission power and higher transmission duty cycles are known to be interference to WSN (IEEE 802.15.4) devices [3,10,11,12] which operate in the same environment and 2.4 GHz ISM band. Random file transfer through WiFi, and wide deployment of WiFi devices make quantifying the performance of IEEE 802.15.4 devices non-trivial [4].…”

“…Nonetheless, they are vulnerable to environmental factors such as long distance [2], RF interference that shares the same ISM band [3,10,11,12] and human activities [9]. WSN optimization protocols design to improve wireless communications are generally implemented using link quality estimation in an environment.…”