Challenges Seamless coverage in complicated environments, such as large buildings, underground structures, tunnels, subways and airports is not an easy task even for advanced wireless communication systems. These locations have blind zones, which are generally small but essential for the complete coverage. For example, when major events ar..
Background Convenient communication is the fundamental guarantee for the smooth operation of hotels. Hotels used to employ the internal telephone communication system for voice communication. However, with the fast growing of the industry, customers are expecting more for the services. To better response to the customers' demands and coor..