Patent ID: 7822075

Claim:
A method of signal transmission between a host Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmission channel between the host BTS and the one or more RRU(s) communicates using wideband transmission links or a network, the method comprising: performing the transmission between the host Base Transceiver Station and the one or more Remote Radio Units over the transmission channel between the host Base Transceiver Station and the one or more Remote Radio Units using Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN); and forming a digital wireless signal data stream and an in-band control signaling stream transmitted over the transmission channel into a Generic Framing Procedure (GFP) frame which is further mapped to a STM-N/OTM-n frame, thereby multiplexing the digital wireless signal data stream and the in-band control signaling stream to realize SDH/OTN-based transmission.