Method and apparatus for multi-antenna signal transmission in RF long-distance wireless BS

A method for transmitting a plurality of antenna signals between a main Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmit channel between the main BTS and the RRUs communicates using a wideband transmission link or a network, and at least one of said communicates the plurality of antenna signals with the main BTS over the transmit channel by using a plurality of antennas, the method comprising the steps of:

• at a transmit end:
• transmitting over the transmit channel using a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN);
• GFP frame-level multiplexing the plurality of antenna signals and an in-band control signaling stream over the transmit channel to form a Generic Framing Procedure (GFP) frame, and mapping the GFP Frame to a STM-N/OTM-n frame thereby multiplexing the plurality of antenna signals and the in-band control signaling stream to realize SDH/OTN-based transmission.

A method for transmitting a plurality of antenna signals between a main Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmit channel between the main BTS and the RRUs communicates using a wideband transmission link or a network, and at least one of said RRUs communicates a plurality of antenna signals with the main BTS over the transmit channel by using a plurality of antennas, the method comprising the steps of:

• at a transmit end:
• transmitting over the transmit channel using a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN);
• forming the plurality of antenna signals and a plurality of respective control signaling on in-band control signaling channels into a plurality of respective Generic Framing Procedure (GFP) frames in parallel over the transmit channel, and mapping the GEP frames to a plurality of respective STM-N/OTM-n frames, so as to realize parallel transmission of the plurality of antenna signals based on SDH/OTN.

A BTS communication system for transmitting a plurality of antenna signals between a main Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmit channel between the main BTS and the one or more RRUs communicates using a wideband transmission link or a network, and at least one of said RRUs communicates a plurality of antenna signals with the main BTS over the transmit channel by using a plurality of antennas, the BTS communication system at least comprising:

• a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN) communication interface configured on the transmit channel, for multiplexing the plurality of antenna signals over the transmit channel adopting time division multiplex technology;
• and
• forming a multiplexed antenna signals stream and in-band control signaling stream into a Generic Framing Procedure (GFP) frame, and further mapping the GFP frame to a STM-N/OTM-n frame, so as to multiplex the plurality of antenna signals and the in-band control signaling stream to realize SDH/OTN-based transmission.

A BTS communication system for transmitting a plurality of antenna signals between a main Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmit channel between the main BTS and the RRUs communicates using a wideband transmission link or a network, and at least one of said RRUs communicates the plurality of antenna signals with the main BTS over the transmit channel by using a plurality of antennas, the BTS communication system at least comprising:

• a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN) communication interface configured on the transmit channel, for forming the plurality of antenna signals and an in-band control signaling stream into a Generic Framing Procedure (GFP) frame over the transmit channel adopting GFP frame level multiplex, and further to map the GFP frame to a STM-N/OTM-n frame, so as to multiplex the plurality of antenna signals and the in-band control signaling stream to realize the transmission based on SDH/OTN.

A BTS communication system for transmitting a plurality of antenna signals between a main Base Transceiver Station (BTS) and one or more Remote Radio Units (RRUs), wherein a transmit channel between the main BTS and the RRUs communicates using a wideband transmission link or a network, and at least one of said RUUs communicates the plurality of antenna signals with the main BTS over the transmit channel by using a plurality of antennas, the BTS communication system at least comprising:

• a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN) communication interface, configured on the transmit channel, for forming the plurality of antenna signals and a plurality of respective control signaling on in-band control signaling channels into a plurality of respective Generic Framing Procedure (GFP) frames in parallel, and for mapping the GFP frames to a plurality of respective STM-N/OTM-n frames, to realize parallel transmission of the plurality of antenna signals based on SDH/OTN.