Abstract: In the recent decade, several technology trends have influenced the field of WSN in significant ways. The first trend is the more readily available technology of ubiquitous wireless sensor networks as well as wireless communication networks and progress in the development of low-power sensor nodes, efficient working sensor networks, mul-tithreading, communication between nodes, joint routing and scheduling, path availability, less energy consumption on nodes etc. WSNs have the potentiality to connect the physical world with the virtual world by forming a network of sensor nodes. Here, sensor nodes are usually battery-operated devices, and hence energy saving of sensor nodes is a major design issue. To prolong the networks lifetime, energy consumption should be reduced in the sensor nodes. The minimization of computing and storage platforms as well as the development of novel micro sensors and sensor materials with high reliability force encourages technology in research on WSN. All the trends have changed the type of dynamic environmental phenomena that can be detected, monitored and reacted to. Another important aspect is the real-time data delivery of novel platforms today. In this paper, we will survey the field of multipath routing in wireless sensor networks, and mainly focus on the technology of QoS of WSNs. Furthermore, our objective is to investigate how this technology can be embedded in the current scenario of intelligent sensor platforms in the WSNs and identify its place and purpose using various communication techniques.

Keywords: WSN, multithreading, communication between nodes, joint routing and scheduling, path availability, less energy consumption on node.