RELAY DEVICE OF A WIRELESS COMMUNICATIONS SYSTEM, CAPABLE OF REDUCING CABLE EXPENSES, WORK TIME, AND MANPOWER

摘要

PURPOSE: A relay device of a wireless communications system is provided to effectively secure multiple distributed coverage areas by using a local area network (LAN) cable in a building.;CONSTITUTION: A second service unit (200a) outputs a converted analog signal through a second antenna. The second service unit transmits remaining forward-direction digital signals through a single third unshielded twisted pair (UTP) cable. The second service unit converts a reverse-direction analog signal received through the second antenna into a reverse-direction digital signal in an uplink. The second service unit combines the converted reverse-direction digital signal with a reverse-direction digital signal received through the third UTP cable. The second service unit transmits the combined digital signal to a first service unit through a second UTP cable.;COPYRIGHT KIPO 2013;[Reference numerals] (11) UTP cable #1; (11a) UTP cable #2; (AA) Forward-direction receiving unit #1; (BB) Forward-direction receiving unit #2; (CC) Reverse-direction transmitting unit #1; (DD) Reverse-direction transmitting unit #2; (EE) Forward-direction transmitting unit #1; (FF) Reverse-direction receiving unit #1; (GG) Forward-direction transmitting unit #2; (HH) Reverse-direction receiving unit #2; (II) Antenna #1; (JJ) Antenna #2