WIRELESS TIME SYNCHRONIZATION BETWEEN IOT DEVICES

This paper highlights the study of time synchronization methodologies which are the Network Time Protocol (NTP) and Global Positioning System (GPS) as well as suggests the usage of Real-Time Clock on an embedded platform to ensure accurate, precise, and reliable time keeping. The study focuses on implementing NTP and GPS as two-time synchronization methodologies on the Raspberry Pi embedded platform as redundancy. The study is implemented to solve a problem faced by nurses at Hospital Seberang Jaya due to unavailability of a centralized clock for correct timestamp information.