Widely used public safety and utilities industries, narrowband network communications devices are necessary for emergency communications. In addition to voice scheduling, users want to not only hear each other but also see each other clearly.
With development of commercial LTE technology, its most significant attributes such as low latency and high bandwidth have brought great changes to the way we communicate. LTE technology has now been brought into the field of private communications. Its capability of transferring large volumes of big data and videos helps us to see the world more clearly.