Coverage reinforcing system based on radio remote unit and method thereof

摘要: The invention provides a coverage enhancement system based on remote radio unit. consists of BBU and plurality RRU, wherein the RRU unit covers same cell. is star network or daisy chain system, an air interface each level transmits I/Q data, compensates time delay at time, ensuring delays from baseband data to antenna port are approximately same, avoiding dispersion influence overlapping area caused by different delays, improving cell coverage, reducing treatment cost BBU, thereby demands mobile communication can be better satisfied.