Why is it preferable and successful?

ZigBee Health Care is reliable because it does not have any side bad effect on human body. The reason is that as mentioned in one of previous posts, ZigBee operates at lower level of average cell-phone in significant amount although it has almost same power level with Bluetooth devices. On the other hand, it has at least 1000 times less duty cycles than Bluetooth devices. Other important aspect is that other devices operateing ISM bands for medical devices using ZigBee but it does not create any problems because ZigBee has very strong tolerance against any interferences which shows its robustness. ZigBee is tested at The Las Vegas Convention Center because it is one of the worst places for wireless devices but ZigBee performed very well. It is the proof that ZigBee can work without error in any environment.

The important advantage of ZigBee is that it uses Mesh-Networking which helps communication with other radios in the network. Mesh-Networking allows to communication with multiple possible paths to its destination which proves its flexibility. In addition, by means of mesh-networks, networks are enabled to grow in size and physical distances are covered. Point to point and point to multipoint topologies refers that data packet is vulnerable to blockage or interference because of single path. Also, it is easy to add devices to ZigBee network. Most importantly, fast and easy association between devices are allowed by ZigBee's pairing process. High degree flexibility ans stability are obtained by using different algorithms which include hierarchical tree, neighbor and table-based routing.

Other important aspect of security for confidential medical data. It was mentioned one of the previous posts that ZigBee uses AES 128 encryption which is known as strongest level of security. Also, many governments and militaries use this security system. In addition, ZigBee Health Care public application profile has specific security features for medical environment privacy. In addition, ZigBee has a strict certification procedure, it is because if someone buys certified ZigBee Health Care device from different vendors, communication and interoperability are guaranteed.