Method and apparatus for multi-antenna signal transmission in RF long-distance wireless BS
First Claim
1. 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 one or more 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 method comprising the steps of:
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transmitting over the transmit channel using a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN);
multiplexing the plurality of antenna signals over the transmit channel using time division multiplex; and
forming a multiplexed antenna signal stream and an in-band control signaling stream together into a Generic Framing Procedure (GFP) frame, and further mapping the GEP 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.
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Abstract
The invention relates to a method for transmitting a plurality of antenna signals in a wireless Base Transceiver Station (BTS) using Remote Radio Head (RRH) technology and the corresponding system. The method includes the steps of: transmitting signals over the transmit channel using Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN), multiplexing the plurality of antenna signals adopting the manners of time division multiplex or GFP frame-level multiplex; forming the multiplexed antenna signal stream and in-band control signaling stream into Generic Framing Procedure (GFP) frame; or forming the plurality of antenna signals and the plurality of respective control signals on the in-band control signaling channel into a plurality of respective GFP frames in parallel; and further mapping the GFP frames to STM-N/OTM-n frames, therefore multiplexing the plurality of antenna signals and the in-band control signaling stream to realize the SDH/OTN-based transmission. According to the invention, in the circumstance of using a plurality of antennas for transmitting signals, the strict time and phase relations between various antenna signals can be ensured, and also system complexity can be simplified, the transmission delays from various antenna signals to CBTS are totally the same.
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Citations
38 Claims
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1. 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 one or more 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 method comprising the steps of:
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at a transmit end; transmitting over the transmit channel using a Synchronous Digital Hierarchy (SDH)/Optical Transmission Network (OTN); multiplexing the plurality of antenna signals over the transmit channel using time division multiplex; and forming a multiplexed antenna signal stream and an in-band control signaling stream together into a Generic Framing Procedure (GFP) frame, and further mapping the GEP 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. 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:
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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. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. 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:
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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. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. 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:
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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. - View Dependent Claims (36)
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37. 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.
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38. 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.
Specification