The safety of students and staff are of paramount importance, making the design and implementation of effective communication systems beyond the push of a button a critical priority for schools.

First, authors provide an overview of ICAN, including framework, typical systems, and functions. The ICAN system supports both communication and navigation services with advanced network facilities ...

As the number of wireless applications and devices grows, higher standards for the quality of service and navigation performance of mobile networks are required. Numerous critical applications, ...