FIELD: radio engineering, communication.
SUBSTANCE: distributed base station includes a base band unit (BBU) and a remote radio unit (RRU), wherein at least one interface signal channel of the distributed base station is received, transmitted by one of the BBU and RRU; optical transport network (OTN) electrical layer multiplexing is then performed through encapsulation to generate OTN signal frames; and electrooptical conversion is performed to generate an optical signal channel and transmit optical signals. On the side of the other of BBU and RRU, optical signals are received, and interface signals are restored therein and then transmitted to the other of BBU and RRU.
EFFECT: high signal transmission efficiency.
20 cl, 12 dwg
