Managing the availability of hospital wireless communication systems

The introduction of wireless communication technology into large Japanese hospitals is rapidly progressing, notably wireless LAN and wireless voice communication systems. However, many hospitals have problems, such as inadequate signal range, electromagnetic interference by waves generated inside/outside the hospital, or by devices carried in by the staff or patients. Many have problems with network security. We herein discuss the problem of “network availability”, which can be defined as “Being able to communicate with the required transmission rate, wherever and whenever a user wants”. We summarize the elements of “network availability” in hospitals and make suggestions for ensuring availability, especially focusing on wireless communications.