Radio resource management of rail traffic broadband mobile communication system Physical layer key technologies of rail traffic broadband mobile communication systems 并列题名：Physical layer key technologies of rail traffic broadband mobile communication systems radio resource management (wireless communications) 并列题名：Self-organization networking techniques in broadband mobile communication systems Self-organization networking techniques in broadband mobile communication systems Self-organization networking techniques in broadband mobile communication systems. LTE-Advanced broadband mobile communications system Tenna technologies and applications in mobile communication system 并列题名：LTE-Advanced broadband mobile communications system