Bi-directional Wireless Sensor Line Protocol(Bi-WSLP) is a sensor network communication protocol based on a line topology, which is common in outdoor monitoring cases for IoT(Internet of Things). Bi-WSLP runs fast and provides a response rapidly, yet it takes a small code size occupies small memory. Bi-WSLP can be easily ported to various hardware platforms because it is coded in C, which is the most popular programming language for embedded systems. In addition, Bi-WSLP allows transmission of large-size data such as still images as well as common sensor data such as temperature and humidity. Bi-WSLP can be modified to conform to the IEEE 802.15.4 standard.
Bi-WSLP supports bidirectional data transmission, so it allows a user not only to control the operation of sensor nodes immediately, but also to receive responses to the user almost in real-time.
