Comparative analysis of star topology and multihop topology outdoor propagation based on Quality of Service (QoS) of wireless sensor network(WSN)

Wireless technology becomes one of the most widely used technology in everyday life. The technology makes it possible to exchange information quickly, without the use of cable transmission medium. Wireless sensor networks use wireless communications to convey information from every node that is deployed in different areas. This research analyzes how the performance of WSN based on Quality of Service (QoS) from 2 WSN topologies which are star and multihop. The results show that outdoor propagation pathloss exponent value is n = 1.5763 and the farthest distance of real Xbee S2C is 660 meters. Highest throughput is 4109 bps for star topology and 3014 bps for multihop topology. The highest packet loss is 4% for star topology and 5.5% for multihop topology. The biggest delay is 269 ms for star topology and 554 ms for multihop topology.