Wireless Sensor Network Quality of Service Optimization for Smart Cities

Due to its wide applicability, wireless sensor network (WSN) has been used to collect data in the field and forward it to a data collector. However, WSN relies on unreliable communication medium that is susceptible to noise and interference, which results in loss of information through the route to the data aggregator. Unlike existing TCP and UDP protocols, a new transport protocol is required to meet the specifications of a wireless sensor network. In order to guarantee the quality of service (QoS) in the communication medium, this work describes a new communication protocol, which aims to guarantee the delivery of packages. Such protocol uses a new transmission acknowledges system, providing higher reliability in peer-to-peer transmissions. With this method, it is shown that even without a network buffer, it is possible to achieve better reliability in harsh environments than others well-known methods. In this way, this protocol guarantees the end-to-end data delivery, using a minimum amount of device memory.