Wireless Sensor Network (WSN) is based on distributed event-based system which is used to provide a bridge between the real physical and virtual world. This paper is to send and receive a data packet with the highest efficiency and quality. In WSN, Quality of Service (QoS) is to give special delivery service to the applications that need it by guaranteeing adequate transmission capacity, jitter, balancing latency and decreasing data loss. Here, the authors are focus on Stateless Protocol for End-to-End Delay (SPEED) is a QoS based routing protocol to provide real time communication, effective delivery speed and efficiency over the network.