Wireless sensor networks (WSN’s) consist of spatially distributed sensor nodes that are related devoid of any wiring. Here, sensor nodes sense data from their environments and use communication units for communicating the sensed data over wireless channels. Huge varieties of applications are supported in wireless sensor networks. The wireless sensor networks are used in environmental monitoring, military reconnaissance, emergency rescue operations etc.. There are many challenges available in the wireless sensor network. They are Quality of Service (QoS), fault tolerance, scalability and maintainability. Here, we choose the Quality of Service to measure the performance of Transmission Control Protocol (TCP) flows. Throughputs are present in the parameter Quality of Service. There are two algorithms are used to measure the throughput. The first algorithm is TCP aware Backpressure and another one is Ad-hoc On Demand Distance Vector (AODV). Distinguish these two algorithms which one is giving a better performance of TCP flows.