摘要:Wireless sensor network is gaining popularity and its applications are being deployed in many sectors such as industrial, construction, healthcare etc. Zigbee standard provides the low cost, low rate data transmission wirelessly. The applications developed using Zigbee technology can transfer data to other devices within the network wirelessly. Zigbee based applications are being implemented in the healthcare sector and examples of such applications are wireless patient monitoring and wireless fitness monitoring. These applications use medical sensors to capture the vital indicators such as heart rate, blood sugar level, temperature etc. These data are securely transmitted to other devices; so that medical professionals can monitor the patient’s health remotely and take further course of action. The main objective of this paper is to examine in detail the main characteristics, features and architecture of Zigbee standards; then the impact of interference on Zigbee applications were evaluated and finally concluded with analysing the impact of Zigbee WSN applications in the medical field.