
NTT DOCOMO is deploying new W-CDMA base stations equipped with newly developed remote radio equipment (RRE) units to provide both existing W-CDMA and forthcoming LTE service. RRE (also known as remote radio head) allows the relatively easy and efficient installation of LTE base stations to existing W-CDMA base stations. Compared to existing equipment, it also helps to lower operational costs thanks to its reduced weight, size and energy consumption....