WO2022142636A1 - 直放站 - Google Patents
直放站 Download PDFInfo
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- WO2022142636A1 WO2022142636A1 PCT/CN2021/126256 CN2021126256W WO2022142636A1 WO 2022142636 A1 WO2022142636 A1 WO 2022142636A1 CN 2021126256 W CN2021126256 W CN 2021126256W WO 2022142636 A1 WO2022142636 A1 WO 2022142636A1
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- WIPO (PCT)
- Prior art keywords
- transmission circuit
- signal
- downlink transmission
- radio frequency
- remote
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims abstract description 334
- 238000012545 processing Methods 0.000 claims abstract description 101
- 230000008054 signal transmission Effects 0.000 claims abstract description 65
- 230000008878 coupling Effects 0.000 claims abstract description 60
- 238000010168 coupling process Methods 0.000 claims abstract description 60
- 238000005859 coupling reaction Methods 0.000 claims abstract description 60
- 238000004891 communication Methods 0.000 claims abstract description 43
- 238000005070 sampling Methods 0.000 claims description 50
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 210000002304 esc Anatomy 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005573 mixed-mode transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15557—Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
Definitions
- the present application relates to the field of mobile communication technologies, and in particular, to a repeater.
- repeaters generally support a single source.
- the repeater can receive the downlink signal of the base station through the antenna, filter and amplify the downlink signal and transmit it to the area to be covered;
- the repeater can process the signal of the mobile station in the coverage area in the same way and transmit it to the corresponding base station through the antenna, so as to achieve enhanced signal transmission between the base station and the mobile station.
- the repeater provided by the embodiment of the present application can improve the application flexibility and utilization rate of the repeater.
- An embodiment of the present application provides a repeater, the repeater includes a near-end unit and a far-end unit, the near-end unit includes a near-end signal transceiver circuit and a near-end baseband processing component connected to each other, the near-end unit
- the signal transceiver circuit includes a signal source port connected to each other and a near-end uplink and downlink transmission circuit, and the near-end signal transceiver circuit is used to connect with a signal source through the signal source port, and the signal source includes a wireless signal source and a radio frequency coupling signal.
- source, the near-end uplink and downlink transmission circuit includes a wireless signal transmission circuit and a radio frequency coupled signal transmission circuit;
- the near-end baseband processing component is configured to receive a downlink communication signal through the near-end signal transceiver circuit, and determine a target signal source corresponding to the downlink communication signal, where the target signal source is the wireless signal source or all the radio frequency coupling source;
- the near-end baseband processing component is used to detect whether the target signal source matches a target transmission circuit, and the target transmission circuit is a circuit in a channel state in the wireless signal transmission circuit and the radio frequency coupled signal transmission circuit;
- the near-end baseband processing component is further configured to switch the on-off state of the wireless signal transmission circuit and the radio frequency coupled signal transmission circuit when the target signal source does not match the target transmission circuit.
- the near-end uplink and downlink transmission circuit includes a near-end downlink transmission circuit, and the near-end downlink transmission circuit includes a wireless signal downlink transmission circuit and a radio frequency coupled signal downlink transmission circuit in parallel with each other;
- the near-end baseband processing component is specifically configured to detect whether the target signal source matches the target downlink transmission circuit, wherein the target downlink transmission circuit is the wireless signal downlink transmission circuit and the radio frequency coupled signal downlink transmission circuit A circuit in an on state;
- the near-end baseband processing component is specifically configured to switch the wireless signal downlink transmission circuit and the radio frequency coupled signal downlink transmission circuit on and off when the target signal source does not match the target downlink transmission circuit state.
- the baseband processing component is specifically configured to, when the target signal source is the wireless signal source, and the target downlink transmission circuit is the radio frequency coupled signal downlink transmission circuit, to The radio frequency coupled signal downlink transmission circuit is switched to the disconnected state, and the wireless signal downlink transmission circuit is switched to the on state;
- the baseband processing component is specifically configured to, in the case that the target signal source is the radio frequency coupling signal source, and the target downlink transmission circuit is the wireless signal downlink transmission circuit, the downlink transmission circuit of the wireless signal Switching to the disconnected state, and switching the downlink transmission circuit of the radio frequency coupled signal to the on-state state.
- the near-end downlink transmission circuit further includes a first SPDT switch and a second SPDT switch;
- the first SPDT switch includes a first stationary terminal and a first movable terminal, and the first stationary terminal is connected to the source port;
- the second SPDT switch includes a second stationary terminal and a first stationary terminal. a second movable end, the second movable end is connected to the proximal baseband processing assembly;
- the baseband processing component is specifically configured to connect the first moving end with the wireless signal source when the target signal source is the wireless signal source and the target downlink transmission circuit is the radio frequency coupled signal downlink transmission circuit. one end of the wireless signal downlink transmission circuit is connected, and the second moving end is connected with the other end of the wireless signal downlink transmission circuit;
- the baseband processing component is specifically configured to connect the first moving end with the radio frequency coupling signal source and the target downlink transmission circuit is the wireless signal downlink transmission circuit when the target signal source is the radio frequency coupling signal source.
- One end of the radio frequency coupling signal downlink transmission circuit is connected, and the second moving end is connected to the other end of the radio frequency coupling signal downlink transmission circuit.
- the wireless signal downlink transmission circuit includes a first signal amplifier and a second signal amplifier connected in series;
- the downlink transmission circuit of the radio frequency coupled signal includes a downlink transmission cable.
- the near-end downlink transmission circuit further includes a downlink ESC attenuator, a third signal amplifier and a near-end AD converter connected in series with each other.
- the near-end uplink and downlink transmission circuit further includes a near-end uplink transmission circuit, and the near-end uplink transmission circuit includes a wireless signal uplink transmission circuit and a radio frequency coupled signal uplink transmission circuit in parallel with each other;
- the near-end baseband processing component is specifically configured to switch the wireless signal uplink transmission circuit and the radio frequency coupling signal according to the on-off state of the wireless signal downlink transmission circuit and the radio frequency coupling signal downlink transmission circuit after switching The on-off state of the upstream transmission circuit.
- the near-end baseband processing component is specifically configured to, if the on-off state of the wireless signal downlink transmission circuit after switching is a channel state, and the radio frequency coupling signal downlink transmission circuit after switching When the on-off state is the disconnected state, the wireless signal uplink transmission circuit is switched to the on-state state, and the radio frequency coupled signal uplink transmission circuit is switched to the disconnected state;
- the near-end baseband processing component is specifically used for if the on-off state of the downlink transmission circuit of the wireless signal after the switch is the off state, and the on-off state of the downlink transmission circuit of the radio frequency coupling signal after the switch is the on-off state In the case of , the wireless signal uplink transmission circuit is switched to the disconnected state, and the radio frequency coupled signal uplink transmission circuit is switched to the on state.
- the near-end uplink transmission circuit further includes a third SPDT switch and a fourth SPDT switch;
- the third SPDT switch includes a third stationary terminal and a third movable terminal, and the third stationary terminal is connected to the source port;
- the fourth SPDT switch includes a fourth stationary terminal and a third stationary terminal. a fourth movable end, the fourth movable end is connected to the proximal baseband processing assembly;
- the baseband processing component after switching the wireless signal downlink transmission circuit to a channel state and switching the radio frequency coupled signal downlink transmission circuit to a disconnected state, is also specifically configured to switch the third moving end and the One end of the wireless signal uplink transmission circuit is connected, and the fourth moving end is connected with the other end of the wireless signal uplink transmission circuit;
- the baseband processing component switches the wireless signal downlink transmission circuit to a disconnected state and switches the radio frequency coupled signal downlink transmission circuit to an on-state state, it is also specifically configured to switch the third moving end and the One end of the radio frequency coupling signal upstream transmission circuit is connected, and the fourth movable end is connected with the other end of the radio frequency coupling signal upstream transmission circuit.
- the wireless signal uplink transmission circuit includes a fourth signal amplifier and a fifth signal amplifier connected in series;
- the radio frequency coupled signal uplink transmission circuit includes an uplink transmission cable.
- the near-end uplink transmission circuit further includes an uplink ESC attenuator, a sixth signal amplifier, and a near-end DA converter connected in series with each other.
- the remote unit includes a remote signal transceiving circuit and a remote baseband processing component, the remote signal transceiving circuit includes an antenna port, a remote uplink transmission circuit and a remote downlink transmission circuit, the The remote signal transceiver circuit is used for connecting with the mobile station through the antenna port;
- One end of the remote uplink transmission circuit is connected to the remote baseband processing component, and the other end of the remote uplink transmission circuit is connected to the antenna port;
- One end of the remote downlink transmission circuit is connected to the remote baseband processing component, and the other end of the remote downlink transmission circuit is connected to the antenna port.
- the remote downstream transmission circuit includes a remote downstream transmission circuit and a remote transmission feedback circuit.
- the remote upstream transmission circuit includes a seventh signal amplifier and a remote AD converter; the remote downstream transmission circuit includes a remote DA converter, an eighth signal amplifier, and a ninth signal amplifier connected in series. signal amplifier.
- the remote unit includes a plurality of the remote signal transceiving circuits, wherein at least two remote AD converters of the remote signal transceiving circuits exist in each of the remote signal transceiving circuits.
- the sampling rate parameters are different, and the sampling rate parameters of the remote DA converters of the two remote signal transceiver circuits are different.
- the near-end unit includes a plurality of the near-end signal transceiver circuits, wherein each of the near-end signal transceiver circuits has at least two near-end signal transceiver circuits of the near-end AD converters.
- the sampling rate parameters are different, and the sampling rate parameters of the near-end DA converters of the two near-end signal transceiver circuits are different.
- the number of the remote units is multiple, and the multiple remote units are connected to the near-end units in a star-shaped network.
- the above-mentioned repeater includes a near-end unit and a far-end unit.
- the near-end unit includes a near-end signal transceiver circuit and a near-end baseband processing component that are connected to each other.
- the near-end signal transceiver circuit includes an interconnected source port and a near-end uplink and downlink.
- a transmission circuit, the near-end signal transceiver circuit is used to connect with a signal source through a signal source port, and the signal source includes a wireless signal source and a radio frequency coupled signal source; wherein, the near-end uplink and downlink transmission circuit includes a wireless signal transmission circuit and a radio frequency coupled signal transmission circuit
- the near-end baseband processing component can receive the downlink communication signal through the near-end signal transceiver circuit, and determine the target signal source corresponding to the downlink communication signal.
- the target signal source is a wireless signal source or a radio frequency coupled signal source.
- the near-end baseband processing The component detects whether the target signal source matches the target transmission circuit.
- the target transmission circuit is the circuit in the channel state in the wireless signal transmission circuit and the radio frequency coupling signal transmission circuit.
- the near-end baseband The processing component switches the on-off state of the wireless signal transmission circuit and the radio frequency coupling signal transmission circuit; in this way, the matching between the target signal source connected to the repeater and the target transmission circuit inside the repeater is realized, for example, the target signal source If it is a wireless signal source, the matching target transmission circuit is the wireless signal transmission circuit in the channel state. For example, if the target signal source is a radio frequency coupling signal source, the matching target transmission circuit is the channel state radio frequency coupling signal transmission circuit.
- the repeater can switch the on-off state of the two internal signal transmission circuits to support two types of signal sources: wireless source and RF coupling source, thus improving the traditional technology that the repeater only supports a single source.
- the embodiment of the present application improves the application flexibility and utilization rate of the repeater.
- FIG. 1 is a schematic structural diagram of an exemplary repeater in one embodiment
- FIG. 2 is a schematic structural diagram of an exemplary repeater in another embodiment
- FIG. 3 is a schematic structural diagram of an exemplary proximal unit in another embodiment
- FIG. 4 is a schematic structural diagram of an exemplary repeater in another embodiment
- FIG. 5 is a schematic structural diagram of an exemplary proximal unit in another embodiment
- FIG. 6 is a schematic structural diagram of an exemplary proximal unit in another embodiment
- FIG. 7 is a schematic structural diagram of an exemplary repeater in another embodiment
- FIG. 8 is a schematic structural diagram of an exemplary remote unit in another embodiment
- FIG. 9 is a schematic structural diagram of an exemplary repeater in another embodiment.
- Near-end unit 101, signal source port; 102, near-end baseband processing component; 1031, wireless signal downlink transmission circuit; 1031a, first signal amplifier; 1031b, second signal amplifier; 1032, radio frequency coupled signal downlink transmission circuit ; 104, the near-end uplink transmission circuit; 1041, the wireless signal uplink transmission circuit; 1041a, the fourth signal amplifier; 1041b, the fifth signal amplifier; 1042, the radio frequency coupled signal uplink transmission circuit; The third signal amplifier; 1053, the near-end AD converter; 1061, the upward ESC attenuator; 1062, the sixth signal amplifier; 1063, the near-end DA converter; 20, the remote unit; 201, the remote baseband processing component; 202. An antenna port.
- a repeater in one embodiment, as shown in FIG. 1, includes a near-end unit 10 and a far-end unit 20, wherein the near-end unit 10 includes a near-end signal transceiver circuit connected to each other and a near-end baseband processing component 102, the near-end signal transceiver circuit includes an interconnected signal source port 101 and a near-end uplink and downlink transmission circuit.
- the near-end signal transceiver circuit is used for connecting to a signal source through the signal source port 101, and the signal source includes a wireless signal source and a radio frequency coupled signal source.
- the wireless signal source and the near-end unit 10 can transmit communication signals by means of wireless transmission, for example, the wireless signal source is provided with an antenna and transmits communication signals through the base station.
- the radio frequency coupling signal source can transmit communication signals by means of radio frequency cable transmission.
- the radio frequency coupling signal source is provided with a coupler, and the radio frequency cable is led out of the base station for communication signal transmission through the coupler.
- the near-end uplink and downlink transmission circuits include a wireless signal transmission circuit and a radio frequency coupled signal transmission circuit as shown in FIG.
- the wireless signal transmission circuit is set to the disconnected state, and the radio frequency coupling signal transmission circuit is set to the on state, so that the near-end unit 10 can transmit the communication signal corresponding to the radio frequency coupling signal source; for example, the radio frequency coupling signal transmission circuit It is set to the disconnected state, and the wireless signal transmission circuit is set to the on state, so that the near-end unit 10 can transmit the communication signal corresponding to the wireless signal source.
- the wireless signal transmission circuit or the radio frequency coupling signal transmission circuit may be set to the on state by default, and the other signal transmission circuit may be set to the disconnected state.
- the near-end baseband processing component 102 can receive the downlink communication signal sent by the source through the near-end signal transceiver circuit.
- the near-end baseband processing component 102 After receiving the downlink communication signal, the near-end baseband processing component 102 determines the target signal source corresponding to the downlink communication signal, and the target signal source is a wireless signal source or a radio frequency coupled signal source, that is, the near-end baseband processing component 102 determines the downlink communication signal. Whether the signal is sent from a wireless source or from an RF-coupled source.
- the downlink communication signal received by the near-end unit 10 at the source port 101 is a radio frequency signal
- the signal received by the near-end baseband processing component 102 is a digital signal, that is, the near-end signal transceiver circuit simulates the downlink communication signal
- the digital signal is obtained by digital processing, and the near-end baseband processing component 102 takes the value of the digital signal as the digital signal strength.
- the mapping relationship between each reference radio frequency signal strength and each reference digital signal strength can be preset in the near-end unit 10, and the near-end baseband processing component 102 searches for the radio frequency signal strength corresponding to the digital signal strength from the mapping relationship, and then obtains the signal.
- the RF signal strength of the downlink communication signal received by the source port 101 is a radio frequency signal
- the signal received by the near-end baseband processing component 102 is a digital signal, that is, the near-end signal transceiver circuit simulates the downlink communication signal
- the digital signal is obtained by digital processing
- the near-end baseband processing component 102 compares the found RF signal strength with a preset RF signal strength threshold, and if the RF signal strength is greater than the RF signal strength If the RF signal strength threshold is set, it is determined that the downlink communication signal is sent by the RF coupled signal source, that is, the target signal source is determined to be the RF coupled signal source; and the RF signal strength is less than or equal to the RF signal strength threshold, then the downlink communication signal is determined to be If it is sent by a wireless source, that is, it is determined that the target source is a wireless source.
- the preset RF signal strength threshold can be set by itself according to the difference between the RF signal strength of the RF coupled signal source and the RF signal strength of the wireless signal source during implementation, for example, set to -20dBm, which is not specifically limited here .
- the near-end baseband processing component 102 After the near-end baseband processing component 102 determines the target signal source corresponding to the downlink communication signal, the near-end baseband processing component 102 can also be used to detect whether the target signal source matches the target transmission circuit, and the target transmission circuit is a wireless signal transmission circuit and a radio frequency. The circuit in the connected state in the coupled signal transmission circuit, that is, the near-end baseband processing component 102 detects whether the target signal source sending the downlink communication signal is consistent with the current default connected signal transmission circuit.
- the near-end baseband processing component 102 is further configured to switch the on-off state of the wireless signal transmission circuit and the radio frequency coupled signal transmission circuit when the target signal source does not match the target transmission circuit. That is, if the target signal source does not match the target transmission circuit, the near-end baseband processing component 102 disconnects the currently connected signal transmission circuit by default, and connects another signal transmission circuit.
- the near-end baseband processing component 102 sets the RF-coupled signal transmission circuit to a disconnected state, and the wireless signal transmission circuit Set to channel state.
- the target signal source is a radio frequency coupled signal source
- the target transmission circuit is a wireless signal transmission circuit in the on state
- the near-end baseband processing component 102 sets the wireless signal transmission circuit to a disconnected state, and sets the radio frequency coupling signal transmission circuit to Path status.
- the near-end baseband processing component 102 does not switch the on-off state of the wireless signal transmission circuit and the radio frequency coupled signal transmission circuit.
- the above-mentioned repeater includes a near-end unit 10 and a far-end unit 20.
- the near-end unit 10 includes a near-end signal transceiver circuit and a near-end baseband processing component 102 connected to each other, and the near-end signal transceiver circuit includes an interconnected source port 101.
- the near-end uplink and downlink transmission circuit the near-end signal transceiver circuit is used to connect with the signal source through the signal source port 101, and the signal source includes a wireless signal source and a radio frequency coupling signal source; wherein, the near-end uplink and downlink transmission circuit includes wireless signal transmission.
- the near-end baseband processing component 102 can receive downlink communication signals through the near-end signal transceiver circuit, and determine the target signal source corresponding to the downlink communication signal, the target signal source is a wireless signal source or a radio frequency coupling The signal source, the near-end baseband processing component 102 detects whether the target signal source matches the target transmission circuit, and the target transmission circuit is the circuit in the channel state in the wireless signal transmission circuit and the radio frequency coupling signal transmission circuit, when the target signal source and the target transmission circuit are not connected.
- the near-end baseband processing component 102 switches the on-off state of the wireless signal transmission circuit and the radio frequency coupling signal transmission circuit; in this way, the target signal source connected by the repeater and the target transmission circuit inside the repeater are realized.
- the target signal source is a wireless signal source
- the matching target transmission circuit is a wireless signal transmission circuit in the channel state.
- the matching target transmission circuit is a radio frequency coupling signal transmission circuit in the channel state, so that the repeater can support two types of signal sources, wireless signal source and radio frequency coupling source, by switching the on-off state of the two internal signal transmission circuits, thereby improving the
- the repeater only supports a single source, which causes the problems of poor application flexibility and low utilization of the repeater.
- the embodiment of the present application improves the application flexibility and utilization rate of the repeater.
- the near-end uplink and downlink transmission circuit in this embodiment includes a near-end downlink transmission circuit and a near-end uplink transmission circuit 104 .
- the near-end downlink transmission circuit is a link used by the near-end unit 10 for signal transmission in the process of downlink signal transmission
- the near-end uplink transmission circuit 104 is a link used by the near-end unit 10 for signal transmission in the process of uplink signal transmission.
- the near-end downlink transmission circuit includes a wireless signal downlink transmission circuit 1031 and a radio frequency coupled signal downlink transmission circuit 1032 that are connected in parallel with each other as shown in FIG. 2 .
- the wireless signal downlink transmission circuit 1031 or the radio frequency coupled signal downlink transmission circuit 1032 may be set to the channel state by default, and the other downlink transmission circuit may be set to the disconnected state. In this way, the near-end baseband processing component 102 can receive the downlink communication signal sent by the source through the near-end downlink transmission circuit.
- the near-end baseband processing component 102 determines the target signal source corresponding to the downlink communication signal, that is, the near-end baseband processing component 102 determines whether the downlink communication signal is sent by a wireless source or a radio frequency sent by the coupled source.
- the near-end baseband processing component 102 is specifically configured to detect whether the target signal source matches the target downlink transmission circuit, wherein the target downlink transmission circuit is the wireless signal downlink transmission circuit 1031 and the radio frequency coupled signal downlink transmission circuit 1032 in the channel state circuit. That is, the near-end baseband processing component 102 detects whether the target signal source for sending the downlink communication signal is consistent with the downlink transmission circuit currently connected by default.
- the near-end baseband processing component 102 is specifically configured to switch the on-off state of the wireless signal downlink transmission circuit 1031 and the radio frequency coupled signal downlink transmission circuit 1032 when the target signal source does not match the target downlink transmission circuit.
- the baseband processing component is specifically configured to switch the RF coupled signal downlink transmission circuit 1032 when the target signal source is a wireless signal source and the target downlink transmission circuit is the RF coupled signal downlink transmission circuit 1032 In the disconnected state, the wireless signal downlink transmission circuit 1031 is switched to the channel state, so that the target signal source matches the downlink transmission circuit in the channel state.
- the baseband processing component is specifically configured to switch the wireless signal downlink transmission circuit 1031 when the target signal source is a radio frequency coupled signal source and the target downlink transmission circuit is the wireless signal downlink transmission circuit 1031 In the off state, the downlink transmission circuit 1032 of the radio frequency coupled signal is switched to the channel state, so that the target signal source matches the downlink transmission circuit in the channel state.
- the wireless signal downlink transmission circuit 1031 in this embodiment includes a first signal amplifier 1031a and a second signal amplifier 1031b connected in series with each other, and the first signal amplifier 1031a may be a low noise amplifier , which is beneficial to reduce the noise caused by amplifying the downlink communication signal.
- the RF coupled signal downlink transmission circuit 1032 includes a downlink transmission cable, that is, the RF coupled signal downlink transmission circuit 1032 does not need the first two stages of amplification.
- the near-end downlink transmission circuit further includes a first SPDT switch and a second SPDT switch as shown in FIG. 3
- the first SPDT switch includes a first stationary terminal and a first movable terminal.
- the first stationary end is connected to the source port 101
- the second SPDT switch includes a second stationary end and a second movable end
- the second movable end is connected to the proximal baseband processing component 102 .
- the near-end downlink transmission circuit further includes a downlink ESC attenuator 1051, a third signal amplifier 1052, and a near-end AD converter 1053 connected in series with each other, and the downlink ESC attenuator 1051 and the third signal amplifier 1052 are used to attenuate or amplify the downlink communication signal transmitted by the wireless signal downlink transmission circuit 1031 or the radio frequency coupled signal downlink transmission circuit 1032 to the signal amplitude range of the near-end AD converter 1053 .
- One end of the down ESC 1051 is connected to one end of the third signal amplifier 1052, the other end of the third signal amplifier 1052 is connected to one end of the near-end AD converter 1053, and the other end of the near-end AD converter 1053 is connected to The proximal baseband processing component 102 is connected. In this way, the second moving end of the second SPDT switch is connected to the other end of the down ESC attenuator 1051 .
- the baseband processing component is specifically configured to downlink the first mobile terminal with the wireless signal when the target signal source is a wireless signal source and the target downlink transmission circuit is the radio frequency coupled signal downlink transmission circuit 1032 One end of the transmission circuit 1031 is connected, and the second moving end is connected to the other end of the wireless signal downlink transmission circuit 1031. In this way, when the target signal source is a wireless signal source, the wireless signal downlink transmission circuit 1031 is connected.
- the baseband processing component is specifically configured to couple the first mobile terminal with the radio frequency when the target signal source is a radio frequency coupled signal source and the target downlink transmission circuit is the wireless signal downlink transmission circuit 1031
- One end of the signal downlink transmission circuit 1032 is connected, and the second moving end is connected to the other end of the radio frequency coupling signal downlink transmission circuit 1032, so that in the case of the target signal source being the radio frequency coupling signal source, the downlink transmission of the radio frequency coupling signal is realized.
- Circuit 1032 is connected.
- the near-end baseband processing component 102 in the above embodiment can dynamically switch the connection state of the wireless signal downlink transmission circuit 1031 or the radio frequency coupled signal downlink transmission circuit 1032 according to the type of the signal source corresponding to the downlink communication signal, so as to realize the target signal source and the near-end signal source.
- the downlink transmission circuit of the unit 10 is matched, so that the near-end unit 10 can transmit downlink communication signals of different signal source types, which improves the application flexibility and utilization rate of the repeater.
- the near-end uplink and downlink transmission circuit in this embodiment further includes a near-end uplink transmission circuit 104 , and the near-end uplink transmission circuit 104 includes wireless radios connected in parallel with each other.
- the wireless signal uplink transmission circuit 1041 or the radio frequency coupled signal uplink transmission circuit 1042 may be set to the channel state by default, and the other uplink transmission circuit may be set to the disconnected state.
- the near-end baseband processing component 102 switches the on-off state of the wireless signal downlink transmission circuit 1031 and the radio frequency coupled signal downlink transmission circuit 1032 by using the implementation manner of the above-mentioned embodiment, the near-end baseband processing component 102 is specifically used for according to the switched wireless signal.
- the on-off state of the signal downlink transmission circuit 1031 and the radio frequency coupled signal downlink transmission circuit 1032 switches the on-off state of the wireless signal uplink transmission circuit 1041 and the radio frequency coupled signal uplink transmission circuit 1042 .
- the near-end baseband processing component 102 is specifically configured to, if the on-off state of the switched wireless signal downlink transmission circuit 1031 is a channel state, and the on-off state of the switched radio frequency coupled signal downlink transmission circuit 1032 When the disconnected state is the disconnected state, the wireless signal uplink transmission circuit 1041 is switched to the on state, and the radio frequency coupled signal uplink transmission circuit 1042 is switched to the disconnected state.
- the near-end baseband processing component 102 is specifically configured to, if the on-off state of the switched wireless signal downlink transmission circuit 1031 is the off state, and the switched radio frequency coupled signal downlink transmission circuit 1032 When the on-off state of the wireless signal is the on-state state, the wireless signal uplink transmission circuit 1041 is switched to the disconnected state, and the radio frequency coupled signal uplink transmission circuit 1042 is switched to the on-state state. In this way, the target information source is matched with the upstream transmission circuit of the channel state.
- the wireless signal uplink transmission circuit 1041 in this embodiment includes a fourth signal amplifier 1041 a and a fifth signal amplifier 1041 b that are connected in series with each other.
- the fourth signal amplifier 1041 a may be a Upstream power amplifier.
- the RF coupled signal upstream transmission circuit 1042 includes an upstream transmission cable.
- the near-end uplink transmission circuit 104 may further include a third SPDT switch and a fourth SPDT switch as shown in FIG. 5 ;
- the third SPDT switch includes a third stationary terminal and a third SPDT switch. Three moving ends, the third moving end is connected to the source port 101 ;
- the fourth SPDT switch includes a fourth moving end and a fourth moving end, and the fourth moving end is connected to the proximal baseband processing component 102 .
- the near-end uplink transmission circuit 104 further includes an uplink ESC attenuator 1061 , a sixth signal amplifier 1062 and a near-end DA converter 1063 connected in series.
- the uplink ESC 1061 and the sixth signal amplifier 1062 are used to attenuate or amplify the uplink communication signal to the digital signal processing range of the near-end DA converter 1063 .
- One end of the upward ESC 1061 is connected to one end of the sixth signal amplifier 1062, the other end of the sixth signal amplifier 1062 is connected to one end of the near-end DA converter 1063, and the other end of the near-end DA converter 1063 is connected to the near-end
- the baseband processing component 102 is connected. In this way, the fourth movable end of the fourth SPDT switch is connected to the other end of the upward ESC attenuator 1061 .
- the baseband processing component switches the wireless signal downlink transmission circuit 1031 to the on state, and switches the radio frequency coupled signal downlink transmission circuit 1032 to the disconnected state, the baseband processing component is also specifically used to connect the third mobile terminal and the One end of the wireless signal uplink transmission circuit 1041 is connected, and the fourth moving end is connected to the other end of the wireless signal uplink transmission circuit 1041 .
- the baseband processing component can connect the first moving end to one end of the wireless signal downlink transmission circuit 1031, and connect the second moving end to the other end of the wireless signal downlink transmission circuit 1031, and is also specifically used to connect the The third moving end is connected to one end of the wireless signal uplink transmission circuit 1041 , and the fourth moving end is connected to the other end of the wireless signal uplink transmission circuit 1041 . In this way, when the target signal source is a wireless signal source, the wireless signal uplink transmission circuit 1041 is connected.
- the baseband processing component switches the wireless signal downlink transmission circuit 1031 to the disconnected state, and switches the radio frequency coupled signal downlink transmission circuit 1032 to the channel state, it is also specifically used to connect the third moving end and one end of the radio frequency coupled signal uplink transmission circuit 1042. connection, and connect the fourth moving end to the other end of the RF coupling signal uplink transmission circuit 1042 .
- the baseband processing component after connecting the first moving end with one end of the radio frequency coupling signal downlink transmission circuit 1032, and connecting the second moving end with the other end of the radio frequency coupling signal downlink transmission circuit 1032, also uses The third moving end is connected to one end of the radio frequency coupling signal uplink transmission circuit 1042 , and the fourth moving end is connected to the other end of the radio frequency coupling signal uplink transmission circuit 1042 . In this way, when the target signal source is the radio frequency coupling signal source, the uplink transmission circuit 1042 of the radio frequency coupling signal is connected.
- the near-end baseband processing component 102 in the above embodiment can dynamically switch the wireless signal downlink transmission circuit 1031 or the radio frequency coupled signal downlink transmission circuit 1032 to be connected, and switch the wireless signal uplink transmission circuit 1041 or The uplink transmission circuit 1042 of the radio frequency coupled signal is connected, so that the types of signal sources supported in the uplink direction and the downlink direction are consistent, and the matching between the target signal source and the uplink and downlink transmission circuits of the near-end unit 10 is realized. In this way, the near-end unit 10 can transmit different signals. Source-type downlink communication signals and uplink traffic signals improve the application flexibility and utilization of the repeater.
- the near-end unit 10 in this embodiment includes a plurality of near-end signal transceiver circuits, and FIG. 6 specifically shows the near-end supporting 5G channel 4T4R and LTE channel 2T2R A diagram of the internal structure of the unit 10.
- each near-end signal transceiver circuit includes the signal source port 101 disclosed in the above-mentioned embodiments and the near-end uplink and downlink transmission circuits.
- the source port 101 is LTE port 1, LTE port 2, NR port 1, NR port 2, source port 3, and source port 4 as shown in FIG. 6 .
- Each of the near-end uplink and downlink transmission circuits includes a near-end downlink transmission circuit and a near-end uplink transmission circuit 104, and transceivers 1 and 2 in FIG. 6 include downlink ESCs 1051 corresponding to the near-end downlink transmission circuits. , a third signal amplifier 1052 and a near-end AD converter 1053 , as well as an uplink ESC attenuator 1061 , a sixth signal amplifier 1062 and a near-end DA converter 1063 corresponding to the near-end uplink transmission circuit 104 .
- each near-end uplink and downlink transmission circuits please refer to the above-mentioned embodiments, which will not be repeated here.
- the sampling rate needs to be greater than the signal bandwidth.
- the maximum bandwidth of 5G NR signal single-carrier signal is 100MHz, and the sampling rate is 122.88Mbps, which can meet the sampling of 5G NR signal.
- the sampling rate of the AD converter and the sampling rate of the DA converter need to satisfy 245.76Mbps.
- the sampling rate parameters of the near-end AD converters 1053 having at least two near-end signal transceiver circuits in each near-end signal transceiver circuit are different, and the two near-end signal transceiver circuits have different sampling rate parameters.
- the sampling rate parameter of the near-end DA converter 1063 is different.
- At least one near-end signal transceiver circuit that supports 4G signals there is at least one near-end signal transceiver circuit that supports 4G signals, at least one near-end signal transceiver circuit supports 5G signals, and the sampling of the near-end AD converter 1053 and the near-end DA converter 1063 of the near-end signal transceiver circuit that supports 4G signals
- the sampling rate is different from the sampling rate of the near-end AD converter 1053 and the near-end DA converter 1063 of the near-end signal transceiver circuit supporting 5G signals, wherein the near-end AD converter 1053 of the near-end signal transceiver circuit supporting 5G signals
- the sampling rate of the near-end DA converter 1063 needs to satisfy 245.76Mbps.
- the repeater in this embodiment is designed to support at least 5G channel 4T4R and LTE channel 2T2R. Since the 5G signal bandwidth supports one 100MHz carrier and LTE supports 3 carriers, the transmission rate calculation formula is as follows:
- Transmission rate sampling rate * IQ * bit width * number of channels * control word efficiency * coding efficiency
- the sampling rate is the acquisition speed of the signal analog-to-digital conversion, which needs to be greater than the bandwidth of the RF signal;
- IQ is the two-way signal of the same direction and the quadrature;
- bit width is the number of quantized bits for sampling, and high-power equipment generally uses 11 9-bit sampling is used for low-power devices;
- the number of channels is the number of multiple-input multiple-output channels used to realize MIMO;
- the control word efficiency adopts 16/15 in CPRI 6.0, that is, 1 of 16 characters is used for control signal transmission;
- the coding efficiency adopts 66B/64B transmission in CPRI 6.0, that is, the coding efficiency is 66/64;
- the near-end unit 10 includes a near-end optical module, and the optical module also needs to be selected according to the transmission rate.
- the embodiments of the present application can realize mixed-mode transmission of 4G signals and 5G signals on the basis of supporting different types of signal sources to expand the application scenarios of repeaters, which reduces the number of devices when optimizing communication signals. Helps to shorten the construction cycle.
- the repeater in the embodiment of the present application realizes the support for 5G signals, which is helpful for the construction of 5G network of mobile communication and promotes the development of new 5G infrastructure.
- the sampling rate, transmission rate, and feedback sampling rate required by signals of various formats are different for AD.
- Converters, DA converters, and optical modules are selected, so that on the basis of supporting different types of signal sources to expand the application scenarios of repeaters, the embodiments of the present application can also realize mixed-mode transmission of 2G signals and 5G signals. Mixed-mode transmission of 3G signals and 5G signals, etc.
- each near-end signal transceiving circuit there may be at least one near-end signal transceiving circuit supporting 2G signals, and at least one near-end signal transceiving circuit supporting 5G signals; or, each near-end signal transceiving circuit may also have at least one near-end signal transceiving circuit.
- the end signal transceiver circuit supports 3G signals, at least one near-end signal transceiver circuit supports 5G signals, and so on.
- the remote unit 20 includes a remote signal transceiver circuit and a remote baseband processing component 201.
- the remote signal transceiver circuit includes an antenna port 202, a remote uplink transmission circuit and a remote downlink transmission circuit.
- the remote signal The transceiver circuit is used to connect with the mobile station through the antenna port 202 .
- One end of the remote upstream transmission circuit is connected to the remote baseband processing component 201, the other end of the remote upstream transmission circuit is connected to the antenna port 202; one end of the remote downstream transmission circuit is connected to the remote baseband processing component 201, and the remote end The other end of the downlink transmission circuit is connected to the antenna port 202 .
- the remote downstream transmission circuit includes a remote downstream transmission circuit and a remote transmission feedback circuit;
- the remote downstream transmission circuit includes a remote DA converter, an eighth signal amplifier and a ninth signal connected in series with each other
- the amplifier, the ninth signal amplifier can be a power amplifier, wherein one end of the ninth signal amplifier is connected to the antenna interface, the other end of the ninth signal amplifier is connected to one end of the eighth signal amplifier, and the other end of the eighth signal amplifier is connected to the remote end One end of the DA converter is connected, and the other end of the remote DA converter is connected to the remote baseband processing component 201 .
- the remote uplink transmission circuit includes a seventh signal amplifier and a remote AD converter, one end of the seventh signal amplifier is connected to the antenna port 202, the other end of the seventh signal amplifier is connected to one end of the remote AD converter, and the remote AD converter The other end of the device is connected to the remote baseband processing component 201, and the seventh signal amplifier may be a low noise amplifier.
- the remote unit 20 includes a plurality of remote signal transceiving circuits.
- FIG. 8 is an internal structural diagram of the remote unit 20 supporting 5G channel 4T4R and LTE channel 2T2R, wherein the specific limitations of each remote signal transceiver circuit refer to the above-mentioned embodiment, which will not be repeated here.
- the transceiver 1 and the transceiver 2 in FIG. 8 include a remote DA converter corresponding to a remote downstream transmission circuit, or a remote AD converter corresponding to a remote upstream transmission circuit.
- the bandwidth of this embodiment is assumed to be 200 MHz.
- DPD digital pre-distortion
- the feedback sampling rate needs to be greater than 600Msps, and the feedback sampling rate here is 614.4Msps.
- the sampling rate of the remote AD converter and the remote DA converter need to meet 245.76Mbps, and the feedback sampling rate needs to meet 614.4Msps.
- the remote AD converters of at least two remote signal transceiving circuits in each remote signal transceiving circuit have different sampling rate parameters, and the sampling rate parameters of the remote DA converters of the two remote signal transceiving circuits are different. rate parameters are different. That is, there is at least one remote signal transceiver circuit that supports 4G signals, at least one remote signal transceiver circuit supports 5G signals, and the sampling rate of the remote AD converter and the remote DA converter of the remote signal transceiver circuit that supports 4G signals is the same as that of the remote DA converter.
- the sampling rates of the remote AD converter and the remote DA converter of the remote signal transceiver circuit supporting 5G signals are different. Among them, the remote AD converter and the remote DA converter of the remote signal transceiver circuit supporting 5G signals
- the sampling rate of the controller needs to meet 245.76Mbps, and the feedback sampling rate needs to meet 614.4Msps.
- 25G single-fiber transmission or 12.5G dual-fiber transmission can be used between the near-end unit 10 and the far-end unit 20.
- the far-end unit 20 includes a far-end optical module, and the optical module also needs to be performed according to the transmission rate. Select accordingly. If more carriers or bandwidth needs to be supported and the transmission rate needs to be increased, calculate the transmission rate according to the above calculation method, determine the transmission, and select the optical module and optical fiber cable.
- the matching settings of the far-end signal transceiver circuit and the near-end signal transceiver circuit can also be set according to various different formats (2G, 3G, 4G).
- the sampling rate, transmission rate and feedback sampling rate required by the signal of the There may also be at least one remote signal transceiver circuit supporting 2G signals, and at least one remote signal transceiver circuit supporting 5G signals; or, at least one remote signal transceiver circuit supporting 3G signals, at least There is a remote signal transceiver circuit to support 5G signals, and so on.
- the number of remote units 20 of the repeater in this embodiment may be multiple.
- the repeater in this embodiment of the present application supports the remote extension function, and the A plurality of remote units 20 may be connected to the near-end units 10 in a star network or a chain network.
- the remote unit 20 sends the downlink communication signal received from the near-end unit 10 to the extended remote unit through the extended optical port, and sends it to the mobile station through the extended remote unit; the extended remote unit can also send the received
- the uplink communication signal is transmitted to the remote unit 20, the remote unit 20 then transmits the signal received from the extended remote unit and the signal received by the remote unit 20 itself to the near-end unit 10, and the near-end unit 10 transmits the signal through the signal.
- the direct coupling port in the source interface transmits to the base station RRU or transmits to the source base station through the antenna in the source interface.
- the repeater in the embodiment of the present application supports the remote expansion function and supports expansion, and can flexibly form a network according to the application scenario, and does not need to connect all the optical fibers from the near end, which reduces the difficulty of construction.
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Abstract
本申请涉及一种直放站。直放站的近端单元包括相互连接的近端信号收发电路和近端基带处理组件，近端信号收发电路包括相互连接的信源端口以及近端上下行传输电路，近端信号收发电路用于通过信源端口与信源连接，信源包括无线信源和射频耦合信源，近端上下行传输电路包括无线信号传输电路以及射频耦合信号传输电路；近端基带处理组件用于通过近端信号收发电路接收下行通信信号，并确定下行通信信号所对应的目标信源；检测目标信源与目标传输电路是否匹配；在目标信源与目标传输电路不匹配的情况下，切换无线信号传输电路和射频耦合信号传输电路的通断状态。本申请可以提升直放站的应用灵活性和利用率。
Description
本申请涉及移动通信技术领域，特别是涉及一种直放站。
随着移动通信市场的迅猛发展，用户越来越希望可随时随地享有高质量通信。为此，移动通信服务商开始在室外、建筑物内部及地下等电波难以覆盖的盲区设置直放站，以最大限度地满足用户对于通话服务的需求。
目前，直放站普遍支持单一信源，例如，对于支持无线信源的直放站而言，直放站可以通过天线接收基站的下行信号，对下行信号进行滤波放大后发射到待覆盖区域；在上行链接路径中，直放站可以将覆盖区域内移动台的信号以同样的方式处理后通过天线发射到相应基站，从而达到基地站与移动台之间的信号增强传递。
然而，在实际的应用过程中，上述直放站的应用灵活性差，直放站的利用率低下。
发明内容
本申请实施例提供的一种直放站，可以提升直放站的应用灵活性和利用率。
本申请实施例提供一种直放站，所述直放站包括近端单元和远端单元，所述近端单元包括相互连接的近端信号收发电路和近端基带处理组件，所述近端信号收发电路包括相互连接的信源端口以及近端上下行传输电路，所述近端信号收发电路用于通过所述信源端口与信源连接，所述信源包括无线信源和射频耦合信源，所述近端上下行传输电路包括无线信号传输电路以及射频耦合信号传输电路；
所述近端基带处理组件，用于通过所述近端信号收发电路接收下行通信信号，并确定所述下行通信信号所对应的目标信源，所述目标信源为所述无线信源或者所述射频耦合信源；
所述近端基带处理组件，用于检测所述目标信源与目标传输电路是否匹配，所述目标传输电路为所述无线信号传输电路和所述射频耦合信号传输电路中处于通路状态的电路；
所述近端基带处理组件，还用于在所述目标信源与所述目标传输电路不匹配的情况下，切换所述无线信号传输电路和所述射频耦合信号传输电路的通断状态。
在其中一个实施例中，所述近端上下行传输电路包括近端下行传输电路，所述近端下行传输电路包括相互并联的无线信号下行传输电路以及射频耦合信号下行传输电路；
所述近端基带处理组件，具体用于检测所述目标信源与目标下行传输电路是否匹配，其中，所述目标下行传输电路为所述无线信号下行传输电路以及所述射频耦合信号下行传输电路中处于通路状态的电路；
所述近端基带处理组件，具体用于在所述目标信源与所述目标下行传输电路不匹配的情况下，切换所述无线信号下行传输电路和所述射频耦合信号下行传输电路的通断状态。
在其中一个实施例中，所述基带处理组件，具体用于在所述目标信源为所述无线信源，且所述目标下行传输电路为所述射频耦合信号下行传输电路的情况下，将所述射频耦合信号下行传输电路切换为断开状态，并将所述无线信号下行传输电路切换为通路状态；
所述基带处理组件，具体用于在所述目标信源为所述射频耦合信源，且所述目标下行传输电路为所述无线信号下行传输电路的情况下，将所述无线信号下行传输电路切换为断开状态，并将所述射频耦合信号下行传输电路切换为通路状态。
在其中一个实施例中，所述近端下行传输电路还包括第一单刀双掷开关和第二单刀双掷开关；
所述第一单刀双掷开关包括第一不动端和第一动端，所述第一不动端与所述信源端口连接；所述第二单刀双掷开关包括第二不动端和第二动端，所述第二动端与所述近端基带处理组件连接；
所述基带处理组件，具体用于在所述目标信源为所述无线信源，且所述目标下行传输电路为所述射频耦合信号下行传输电路的情况下，将所述第一动端与所述无线信号下行传输电路的一端连接，并将所述第二动端与所述无线信号下行传输电路的另一端连接；
所述基带处理组件，具体用于在所述目标信源为所述射频耦合信源，且所述目标下行传输电路为所述无线信号下行传输电路的情况下，将所述第一动端与所述射频耦合信号下行传输电路的一端连接，并将所述第二动端和所述射频耦合信号下行传输电路的另一端连接。
在其中一个实施例中，所述无线信号下行传输电路包括相互串联的第一信号放大器和第二信号放大器；
所述射频耦合信号下行传输电路包括下行传输电缆。
在其中一个实施例中，所述近端下行传输电路还包括相互串联的下行电调衰减器、第三 信号放大器以及近端AD转换器。
在其中一个实施例中，所述近端上下行传输电路还包括近端上行传输电路，所述近端上行传输电路包括相互并联的无线信号上行传输电路以及射频耦合信号上行传输电路；
所述近端基带处理组件，具体用于根据切换后的所述无线信号下行传输电路和所述射频耦合信号下行传输电路的通断状态，切换所述无线信号上行传输电路以及所述射频耦合信号上行传输电路的通断状态。
在其中一个实施例中，所述近端基带处理组件，具体用于若切换后的所述无线信号下行传输电路的通断状态为通路状态，且切换后的所述射频耦合信号下行传输电路的通断状态为断开状态的情况下，则将所述无线信号上行传输电路切换为通路状态，并将所述射频耦合信号上行传输电路切换为断开状态；
所述近端基带处理组件，具体用于若切换后的所述无线信号下行传输电路的通断状态为断开状态，且切换后的所述射频耦合信号下行传输电路的通断状态为通路状态的情况下，则将所述无线信号上行传输电路切换为断开状态，并将所述射频耦合信号上行传输电路切换为通路状态。
在其中一个实施例中，所述近端上行传输电路还包括第三单刀双掷开关和第四单刀双掷开关；
所述第三单刀双掷开关包括第三不动端和第三动端，所述第三不动端与所述信源端口连接；所述第四单刀双掷开关包括第四不动端和第四动端，所述第四动端与所述近端基带处理组件连接；
所述基带处理组件，将所述无线信号下行传输电路切换为通路状态，并将所述射频耦合信号下行传输电路切换为断开状态之后，还具体用于将所述第三动端和所述无线信号上行传输电路的一端连接，并将所述第四动端和所述无线信号上行传输电路的另一端连接；
所述基带处理组件，将所述无线信号下行传输电路切换为断开状态，并将所述射频耦合信号下行传输电路切换为通路状态之后，还具体用于将所述第三动端和所述射频耦合信号上行传输电路的一端连接，并将所述第四动端和所述射频耦合信号上行传输电路的另一端连接。
在其中一个实施例中，所述无线信号上行传输电路包括相互串联的第四信号放大器和第五信号放大器；
所述射频耦合信号上行传输电路包括上行传输电缆。
在其中一个实施例中，所述近端上行传输电路还包括相互串联的上行电调衰减器、第六信号放大器以及近端DA转换器。
在其中一个实施例中，所述远端单元包括远端信号收发电路和远端基带处理组件，所述远端信号收发电路包括天线端口、远端上行传输电路和远端下行传输电路，所述远端信号收发电路用于通过所述天线端口与移动台连接；
所述远端上行传输电路的一端与所述远端基带处理组件连接，所述远端上行传输电路的另一端与所述天线端口连接；
所述远端下行传输电路的一端与所述远端基带处理组件连接，所述远端下行传输电路的另一端与所述天线端口连接。
在其中一个实施例中，所述远端下行传输电路包括远端下行发射电路和远端发射反馈电路。
在其中一个实施例中，所述远端上行传输电路包括第七信号放大器和远端AD转换器；所述远端下行发射电路包括相互串联的远端DA转换器、第八信号放大器和第九信号放大器。
在其中一个实施例中，所述远端单元包括多个所述远端信号收发电路，其中，各所述远端信号收发电路中至少存在两个远端信号收发电路的远端AD转换器的采样率参数不同，且所述两个远端信号收发电路的远端DA转换器的采样率参数不同。
在其中一个实施例中，所述近端单元包括多个所述近端信号收发电路，其中，各所述近端信号收发电路中至少存在两个近端信号收发电路的近端AD转换器的采样率参数不同，且所述两个近端信号收发电路的近端DA转换器的采样率参数不同。
在其中一个实施例中，所述远端单元的数量为多个，多个所述远端单元通过星型组网的方式与所述近端单元连接。
本申请实施例提供的技术方案带来的有益效果至少包括：
上述直放站包括近端单元和远端单元，近端单元包括相互连接的近端信号收发电路和近端基带处理组件，该近端信号收发电路包括相互连接的信源端口以及近端上下行传输电路，近端信号收发电路用于通过信源端口与信源连接，该信源包括无线信源和射频耦合信源；其中，近端上下行传输电路包括无线信号传输电路以及射频耦合信号传输电路，该近端基带处理组件可以通过近端信号收发电路接收下行通信信号，并确定下行通信信号所对应的目标信源，该目标信源为无线信源或者射频耦合信源，近端基带处理组件检测目标信源与目标传输 电路是否匹配，目标传输电路为无线信号传输电路和射频耦合信号传输电路中处于通路状态的电路，在目标信源与目标传输电路不匹配的情况下，近端基带处理组件则切换无线信号传输电路和射频耦合信号传输电路的通断状态；这样，实现了直放站连接的目标信源与直放站内部的目标传输电路之间的匹配，例如，目标信源为无线信源，则与之匹配的目标传输电路为通路状态的无线信号传输电路，还例如，目标信源为射频耦合信源，则与之匹配的目标传输电路为通路状态的射频耦合信号传输电路，从而直放站可以通过切换内部的两条信号传输电路的通断状态来实现支持无线信源以及射频耦合信源两种类型的信源，从而改善了传统技术中直放站仅支持单一信源导致的直放站的应用灵活性差、直放站的利用率低下的问题。本申请实施例提升了直放站的应用灵活性和利用率。
图1为一个实施例中一种示例性地直放站的结构示意图；
图2为另一个实施例中一种示例性地直放站的结构示意图；
图3为另一个实施例中一种示例性地近端单元的结构示意图；
图4为另一个实施例中一种示例性地直放站的结构示意图；
图5为另一个实施例中一种示例性地近端单元的结构示意图；
图6为另一个实施例中一种示例性地近端单元的结构示意图；
图7为另一个实施例中一种示例性地直放站的结构示意图；
图8为另一个实施例中一种示例性地远端单元的结构示意图；
图9为另一个实施例中一种示例性地直放站的结构示意图。
附图标记说明：
10、近端单元；101、信源端口；102、近端基带处理组件；1031、无线信号下行传输电路；1031a、第一信号放大器；1031b、第二信号放大器；1032、射频耦合信号下行传输电路；104、近端上行传输电路；1041、无线信号上行传输电路；1041a、第四信号放大器；1041b、第五信号放大器；1042、射频耦合信号上行传输电路；1051、下行电调衰减器；1052、第三信号放大器；1053、近端AD转换器；1061、上行电调衰减器；1062、第六信号放大器；1063、近端DA转换器；20、远端单元；201、远端基带处理组件；202、天线端口。
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在一个实施例中，如图1所示，提供了一种直放站，该直放站包括近端单元10和远端单元20，其中，近端单元10包括相互连接的近端信号收发电路和近端基带处理组件102，该近端信号收发电路包括相互连接的信源端口101以及近端上下行传输电路。
近端信号收发电路用于通过信源端口101与信源连接，该信源包括无线信源和射频耦合信源。无线信源和近端单元10可以通过无线传输的方式传输通信信号，无线信源如设置有天线且通过该天线进行通信信号传输的基站。射频耦合信源可以通过射频线缆传输的方式传输通信信号，射频耦合信源如设置有耦合器且通过该耦合器引出射频线缆进行通信信号传输的基站。
本申请实施例中，近端上下行传输电路包括如图1所示的无线信号传输电路以及射频耦合信号传输电路，近端单元10在正常工作状态下，仅连通其中一个信号传输电路，例如，将无线信号传输电路设置为断开状态，并将射频耦合信号传输电路设置为通路状态，这样，近端单元10则可以传输射频耦合信源对应的通信信号；还例如，将射频耦合信号传输电路设置为断开状态，并将无线信号传输电路设置为通路状态，这样，近端单元10则可以传输无线信源对应的通信信号。
在一种可能的实施方式中，直放站开站或初始化后，可以默认将无线信号传输电路或射频耦合信号传输电路设置为通路状态，并将另外一个信号传输电路设置为断开状态。这样，近端基带处理组件102则可以通过近端信号收发电路接收信源发送的下行通信信号。
近端基带处理组件102收到下行通信信号后，确定该下行通信信号所对应的目标信源，该目标信源为无线信源或者射频耦合信源，即近端基带处理组件102确定该下行通信信号是无线信源发送的还是射频耦合信源发送的。
本申请实施例中，近端单元10在信源端口101接收到的下行通信信号为射频信号，近端基带处理组件102接收到的为数字信号，即近端信号收发电路对下行通信信号进行模拟转数字处理得到数字信号，近端基带处理组件102将该数字信号的值作为数字信号强度。近端单 元10中可以预置各参考射频信号强度和各参考数字信号强度之间的映射关系，近端基带处理组件102从该映射关系中查找该数字信号强度对应的射频信号强度，则得到信源端口101接收到的下行通信信号的射频信号强度。
由于射频耦合信源的射频信号强度大于无线信源的射频信号强度，近端基带处理组件102将查找到的该射频信号强度和预设的射频信号强度阈值进行比较，若该射频信号强度大于该射频信号强度阈值，则确定该下行通信信号为射频耦合信源发送的，即确定目标信源为射频耦合信源；而该射频信号强度小于或者等于该射频信号强度阈值，则确定该下行通信信号为无线信源发送的，即确定目标信源为无线信源。
其中，预设的射频信号强度阈值在实施时可以根据射频耦合信源的射频信号强度和无线信源的射频信号强度之间的差异自行设置，例如，设为-20dBm，在此不做具体限制。
近端基带处理组件102确定下行通信信号所对应的目标信源后，近端基带处理组件102还可以用于检测目标信源与目标传输电路是否匹配，该目标传输电路为无线信号传输电路和射频耦合信号传输电路中处于通路状态的电路，也即，近端基带处理组件102检测发送下行通信信号的目标信源是否与当前默认连通的信号传输电路相一致。
近端基带处理组件102还用于在目标信源与目标传输电路不匹配的情况下，切换无线信号传输电路和射频耦合信号传输电路的通断状态。即，若目标信源与目标传输电路不匹配，近端基带处理组件102则将当前默认连通的信号传输电路断开，并将另外一条信号传输电路连通。
例如，若目标信源为无线信源，目标传输电路为处于通路状态的射频耦合信号传输电路，近端基带处理组件102则将射频耦合信号传输电路设置为断开状态，并将无线信号传输电路设置为通路状态。若目标信源为射频耦合信源，目标传输电路为处于通路状态的无线信号传输电路，近端基带处理组件102则将无线信号传输电路设置为断开状态，并将射频耦合信号传输电路设置为通路状态。
可以理解的是，若目标信源与目标传输电路匹配，近端基带处理组件102则不对无线信号传输电路和射频耦合信号传输电路的通断状态进行切换。
上述直放站包括近端单元10和远端单元20，近端单元10包括相互连接的近端信号收发电路和近端基带处理组件102，该近端信号收发电路包括相互连接的信源端口101以及近端上下行传输电路，近端信号收发电路用于通过信源端口101与信源连接，该信源包括无线信 源和射频耦合信源；其中，近端上下行传输电路包括无线信号传输电路以及射频耦合信号传输电路，该近端基带处理组件102可以通过近端信号收发电路接收下行通信信号，并确定下行通信信号所对应的目标信源，该目标信源为无线信源或者射频耦合信源，近端基带处理组件102检测目标信源与目标传输电路是否匹配，目标传输电路为无线信号传输电路和射频耦合信号传输电路中处于通路状态的电路，在目标信源与目标传输电路不匹配的情况下，近端基带处理组件102则切换无线信号传输电路和射频耦合信号传输电路的通断状态；这样，实现了直放站连接的目标信源与直放站内部的目标传输电路之间的匹配，例如，目标信源为无线信源，则与之匹配的目标传输电路为通路状态的无线信号传输电路，还例如，目标信源为射频耦合信源，则与之匹配的目标传输电路为通路状态的射频耦合信号传输电路，从而直放站可以通过切换内部的两条信号传输电路的通断状态来实现支持无线信源以及射频耦合信源两种类型的信源，从而改善了传统技术中直放站仅支持单一信源导致的直放站的应用灵活性差、直放站的利用率低下的问题。本申请实施例提升了直放站的应用灵活性和利用率。
在一个实施例中，基于上述图1所示的实施例，参见图2，本实施例近端上下行传输电路包括近端下行传输电路和近端上行传输电路104。近端下行传输电路为下行信号传输过程中近端单元10用于信号传输的链路，近端上行传输电路104为上行信号传输过程中近端单元10用于信号传输的链路。
其中，该近端下行传输电路包括如图2所示的相互并联的无线信号下行传输电路1031以及射频耦合信号下行传输电路1032。
本申请实施例中，直放站开站或初始化后，可以默认将无线信号下行传输电路1031或射频耦合信号下行传输电路1032设置为通路状态，并将另外一个下行传输电路设置为断开状态。这样，近端基带处理组件102则可以通过近端下行传输电路接收信源发送的下行通信信号。
如上文所述，近端基带处理组件102收到下行通信信号后，确定该下行通信信号所对应的目标信源，即近端基带处理组件102确定该下行通信信号是无线信源发送的还是射频耦合信源发送的。
接着，该近端基带处理组件102具体用于检测目标信源与目标下行传输电路是否匹配，其中，该目标下行传输电路为无线信号下行传输电路1031以及射频耦合信号下行传输电路 1032中处于通路状态的电路。也即，近端基带处理组件102检测发送下行通信信号的目标信源是否与当前默认连通的下行传输电路相一致。
该近端基带处理组件102具体用于在目标信源与目标下行传输电路不匹配的情况下，切换无线信号下行传输电路1031和射频耦合信号下行传输电路1032的通断状态。
在一种可能的实施方式中，基带处理组件具体用于在目标信源为无线信源，且目标下行传输电路为射频耦合信号下行传输电路1032的情况下，将射频耦合信号下行传输电路1032切换为断开状态，并将无线信号下行传输电路1031切换为通路状态，这样，目标信源则与通路状态的下行传输电路相匹配。
在另一种可能的实施方式中，基带处理组件具体用于在目标信源为射频耦合信源，且目标下行传输电路为无线信号下行传输电路1031的情况下，将无线信号下行传输电路1031切换为断开状态，并将射频耦合信号下行传输电路1032切换为通路状态，这样，目标信源则与通路状态的下行传输电路相匹配。
基于上述图2所示的实施例，参见图3，本实施例无线信号下行传输电路1031包括相互串联的第一信号放大器1031a和第二信号放大器1031b，该第一信号放大器1031a可以是低噪声放大器，有利于降低将下行通信信号放大带来的噪声。
由于射频耦合信源的射频信号强度较大，因此射频耦合信号下行传输电路1032包括下行传输电缆，即射频耦合信号下行传输电路1032不需要前两级放大。
本申请实施例中，近端下行传输电路还包括如图3所示的第一单刀双掷开关和第二单刀双掷开关，该第一单刀双掷开关包括第一不动端和第一动端，第一不动端与信源端口101连接，该第二单刀双掷开关包括第二不动端和第二动端，第二动端与近端基带处理组件102连接。
在一种可能的实施方式中，请继续参见图3，近端下行传输电路还包括相互串联的下行电调衰减器1051、第三信号放大器1052以及近端AD转换器1053，下行电调衰减器1051和第三信号放大器1052用于将无线信号下行传输电路1031或射频耦合信号下行传输电路1032传输的下行通信信号衰减或放大至近端AD转换器1053的信号幅值范围内。其中，该下行电调衰减器1051的一端和第三信号放大器1052的一端连接，第三信号放大器1052的另一端和近端AD转换器1053的一端连接，近端AD转换器1053的另一端和近端基带处理组件102连接。这样，第二单刀双掷开关的第二动端则与下行电调衰减器1051的另一端连接。
在一种可能的实施方式中，基带处理组件具体用于在目标信源为无线信源，且目标下行传输电路为射频耦合信号下行传输电路1032的情况下，将第一动端与无线信号下行传输电路1031的一端连接，并将第二动端与无线信号下行传输电路1031的另一端连接，这样，在目标信源为无线信源的情况下，实现将无线信号下行传输电路1031连通。
在另一种可能的实施方式中，基带处理组件具体用于在目标信源为射频耦合信源，且目标下行传输电路为无线信号下行传输电路1031的情况下，将第一动端与射频耦合信号下行传输电路1032的一端连接，并将第二动端和射频耦合信号下行传输电路1032的另一端连接，这样，在目标信源为射频耦合信源的情况下，实现将射频耦合信号下行传输电路1032连通。
由此，上述实施例近端基带处理组件102可以根据下行通信信号对应的信源类型，动态切换无线信号下行传输电路1031或射频耦合信号下行传输电路1032的连通状态，实现目标信源与近端单元10的下行传输电路的匹配，这样，近端单元10则可以传输不同信源类型的下行通信信号，提升了直放站的应用灵活性和利用率。
在一个实施例中，基于上述图2所示的实施例，参见图4，本实施例近端上下行传输电路还包括近端上行传输电路104，该近端上行传输电路104包括相互并联的无线信号上行传输电路1041以及射频耦合信号上行传输电路1042。
本申请实施例中，直放站开站或初始化后，可以默认将无线信号上行传输电路1041或射频耦合信号上行传输电路1042设置为通路状态，并将另外一个上行传输电路设置为断开状态。
近端基带处理组件102采用上述实施例的实施方式对无线信号下行传输电路1031和射频耦合信号下行传输电路1032的通断状态进行切换后，近端基带处理组件102具体用于根据切换后的无线信号下行传输电路1031和射频耦合信号下行传输电路1032的通断状态，切换无线信号上行传输电路1041以及射频耦合信号上行传输电路1042的通断状态。
在一种可能的实施方式中，近端基带处理组件102，具体用于若切换后的无线信号下行传输电路1031的通断状态为通路状态，且切换后的射频耦合信号下行传输电路1032的通断状态为断开状态的情况下，则将无线信号上行传输电路1041切换为通路状态，并将射频耦合信号上行传输电路1042切换为断开状态。
在另一种可能的实施方式中，近端基带处理组件102，具体用于若切换后的无线信号下 行传输电路1031的通断状态为断开状态，且切换后的射频耦合信号下行传输电路1032的通断状态为通路状态的情况下，则将无线信号上行传输电路1041切换为断开状态，并将射频耦合信号上行传输电路1042切换为通路状态。这样，目标信源则与通路状态的上行传输电路相匹配。
基于上述图3和图4所示的实施例，参见图5，本实施例无线信号上行传输电路1041包括相互串联的第四信号放大器1041a和第五信号放大器1041b，该第四信号放大器1041a可以是上行功率放大器。射频耦合信号上行传输电路1042包括上行传输电缆。
本申请实施例中，近端上行传输电路104还可以包括如图5所示的第三单刀双掷开关和第四单刀双掷开关；该第三单刀双掷开关包括第三不动端和第三动端，第三不动端与信源端口101连接；该第四单刀双掷开关包括第四不动端和第四动端，第四动端与近端基带处理组件102连接。
在一种可能的实施方式中，请继续参见图5，近端上行传输电路104还包括相互串联的上行电调衰减器1061、第六信号放大器1062以及近端DA转换器1063。上行电调衰减器1061和第六信号放大器1062用于将上行的通信信号衰减或放大至近端DA转换器1063的数字信号处理范围内。上行电调衰减器1061的一端和第六信号放大器1062的一端连接，第六信号放大器1062的另一端和近端DA转换器1063的一端连接，近端DA转换器1063的另一端则和近端基带处理组件102连接。这样，第四单刀双掷开关的第四动端则与上行电调衰减器1061的另一端连接。
在一种可能的实施方式中，基带处理组件将无线信号下行传输电路1031切换为通路状态，并将射频耦合信号下行传输电路1032切换为断开状态之后，还具体用于将第三动端和无线信号上行传输电路1041的一端连接，并将第四动端和无线信号上行传输电路1041的另一端连接。作为一种实施方式，基带处理组件可以将第一动端与无线信号下行传输电路1031的一端连接，并将第二动端与无线信号下行传输电路1031的另一端连接之后，还具体用于将第三动端和无线信号上行传输电路1041的一端连接，并将第四动端和无线信号上行传输电路1041的另一端连接。这样，在目标信源为无线信源的情况下，实现将无线信号上行传输电路1041连通。
基带处理组件将无线信号下行传输电路1031切换为断开状态，并将射频耦合信号下行传输电路1032切换为通路状态之后，还具体用于将第三动端和射频耦合信号上行传输电路1042 的一端连接，并将第四动端和射频耦合信号上行传输电路1042的另一端连接。作为一种实施方式，基带处理组件，将第一动端与射频耦合信号下行传输电路1032的一端连接，并将第二动端和射频耦合信号下行传输电路1032的另一端连接之后，还具体用于将第三动端和射频耦合信号上行传输电路1042的一端连接，并将第四动端和射频耦合信号上行传输电路1042的另一端连接。这样，在目标信源为射频耦合信源的情况下，实现将射频耦合信号上行传输电路1042连通。
由此，上述实施例近端基带处理组件102可以根据下行通信信号对应的信源类型，动态切换无线信号下行传输电路1031或射频耦合信号下行传输电路1032连通，以及切换无线信号上行传输电路1041或射频耦合信号上行传输电路1042连通，使得上行方向和下行方向支持的信源类型一致，实现目标信源与近端单元10的上下行传输电路的匹配，这样，近端单元10则可以传输不同信源类型的下行通信信号以及上行通行信号，提升了直放站的应用灵活性和利用率。
在一个实施例中，基于图5所示的实施例，参见图6，本实施例近端单元10包括多个近端信号收发电路，图6具体为支持5G通道4T4R，LTE通道2T2R的近端单元10的内部结构图。
其中，每个近端信号收发电路包括上述实施例公开的信源端口101以及近端上下行传输电路。信源端口101如图6所示的LTE端口1、LTE端口2、NR端口1、NR端口2、信源端口3以及信源端口4。
其中，每个近端上下行传输电路均包括近端下行传输电路和近端上行传输电路104，图6中的收发器1和收发器2包括对应近端下行传输电路的下行电调衰减器1051、第三信号放大器1052以及近端AD转换器1053，以及对应近端上行传输电路104的上行电调衰减器1061、第六信号放大器1062以及近端DA转换器1063。关于各个近端上下行传输电路的具体限定请参见上述实施例，在此不再赘述。
随着5G基站建设的加速，采用成本更低的直放站是一种非常高效的建站方法。传统的直放站一般仅支持4G信号，5G信号区别于4G LTE信号最大的特点是信号带宽和调制阶数，为了支持5G NR需要更高的采样速率、传输速率及反馈采样速率。
关于采样速率，根据奈奎斯特采样原理，采样速率需大于信号带宽。5G NR信号单载波 信号最大带宽100MHz，采样速率采用122.88Mbps即可满足5G NR信号的采样。本实施例中，由于需要支持不同信源的通信信号，因此需要支持更宽的信号的采样，故采样速率可以选用122.88*2＝245.76Mbps，这样，支持带宽达到200MHz以上。这样，为支持5G信号，AD转换器的采样率和DA转换器的采样率需要满足245.76Mbps。
本申请实施例中，请继续参见图6，各近端信号收发电路中至少存在两个近端信号收发电路的近端AD转换器1053的采样率参数不同，且两个近端信号收发电路的近端DA转换器1063的采样率参数不同。即至少存在一个近端信号收发电路支持4G信号，至少存在一个近端信号收发电路支持5G信号，支持4G信号的近端信号收发电路的近端AD转换器1053以及近端DA转换器1063的采样率与支持5G信号的近端信号收发电路的近端AD转换器1053以及近端DA转换器1063的采样率是不同的，其中，支持5G信号的近端信号收发电路的近端AD转换器1053以及近端DA转换器1063的采样率需要满足245.76Mbps。
关于传输速率，本实施例直放站设计为至少支持5G通道4T4R，LTE通道2T2R，由于5G信号带宽支持一个100MHz载波，LTE支持3个载波，传输速率计算公式如下：
传输速率＝采样率*IQ*位宽*通道数*控制字效率*编码效率
其中，采样率为信号模数转换的采集速度，需大于射频信号的带宽；IQ为同向和正交的两路信号；位宽为采样的量化位(bit)数，大功率设备一般采用11位，小功率设备采用9位采样；通道数为实现MIMO时采用多入多出的通路数量；控制字效率采用CPRI 6.0中的16/15，即16个字符中使用1个进行控制信号传输；编码效率采用CPRI 6.0中的66B/64B传输，即编码效率为66/64；
因此，245.76Mbps(采样率)*2(IQ)*11(位宽)*4(4T4R)*16/15(控制字)*66/64(编码)＝23789.568Mbps，即传输速率＝23789.568Mbps，由此，近端单元10和远端单元20之间可采用25G单纤传输或者12.5G双纤传输，近端单元10包括近端光模块，光模块同样需要按照该传输速率进行相应选型。
由此，本申请实施例在支持不同类型的信源扩大直放站应用场景的基础上，可以实现4G信号和5G信号的混模传输，这就减少了通信信号优化时的设备数量，同时有助于缩短建站周期。本申请实施例直放站实现对5G信号的支持，有助于移动通信5G网络的建设，推动5G新基建发展。
与图6所示实施例类似，可以理解的是，本申请实施例中，按照各种不同制式(2G、3G、 4G或5G)的信号所需的采样率、传输速率和反馈采样速率对AD转换器、DA转换器以及光模块进行选型，从而本申请实施例在支持不同类型的信源以扩大直放站应用场景的基础上，还可以实现2G信号和5G信号的混模传输、实现3G信号和5G信号的混模传输，等等。即，各近端信号收发电路中还可以至少存在一个近端信号收发电路支持2G信号、至少存在一个近端信号收发电路支持5G信号；或者，各近端信号收发电路中还可以至少存在一个近端信号收发电路支持3G信号、至少存在一个近端信号收发电路支持5G信号，等等。
在一个实施例中，在上述实施例的基础上，参见图7，本实施例将对远端单元20的内部结构进行介绍。如图7所示，该远端单元20包括远端信号收发电路和远端基带处理组件201，远端信号收发电路包括天线端口202、远端上行传输电路和远端下行传输电路，远端信号收发电路用于通过天线端口202与移动台连接。
其中，远端上行传输电路的一端与远端基带处理组件201连接，远端上行传输电路的另一端与天线端口202连接；远端下行传输电路的一端与远端基带处理组件201连接，远端下行传输电路的另一端与天线端口202连接。
在一种可能的实施方式中，远端下行传输电路包括远端下行发射电路和远端发射反馈电路；远端下行发射电路包括相互串联的远端DA转换器、第八信号放大器和第九信号放大器，第九信号放大器可以是功率放大器，其中，第九信号放大器的一端和天线接口连接，第九信号放大器的另一端和第八信号放大器的一端连接，第八信号放大器的另一端和远端DA转换器的一端连接，远端DA转换器的另一端和远端基带处理组件201连接。
远端上行传输电路包括第七信号放大器和远端AD转换器，第七信号放大器的一端和天线端口202连接，第七信号放大器的另一端和远端AD转换器的一端连接，远端AD转换器的另一端和远端基带处理组件201连接，第七信号放大器可以是低噪声放大器。
在一个实施例中，在上述实施例的基础上，参见图8，远端单元20包括多个远端信号收发电路。图8具体为支持5G通道4T4R，LTE通道2T2R的远端单元20的内部结构图，其中，每个远端信号收发电路的具体限定请参见上述实施例，在此不再赘述。
图8中的收发器1和收发器2包括对应远端下行发射电路的远端DA转换器，或对应远端上行传输电路的远端AD转换器。
本申请实施例中，为了支持5G信号，需要更高的采样速率、传输速率的同时，还需要 更高的反馈采样速率。
关于反馈采样速率，本实施例带宽假设200MHz，为了保证数字预失真(DPD)效果，实现三阶互调杂散信号有效对消，需把信号带宽三倍的宽带信号(即600MHz)进行无失真采样，同样地，根据奈奎斯特采样原理，反馈采样速率需大于600Msps，此处反馈采样速率选择614.4Msps。这样，为支持5G信号，远端AD转换器的采样率和远端DA转换器的采样率需要满足245.76Mbps，且反馈采样速率需要满足614.4Msps。
本申请实施例中，各远端信号收发电路中至少存在两个远端信号收发电路的远端AD转换器的采样率参数不同，且两个远端信号收发电路的远端DA转换器的采样率参数不同。即至少存在一个远端信号收发电路支持4G信号，至少存在一个远端信号收发电路支持5G信号，支持4G信号的远端信号收发电路的远端AD转换器以及远端DA转换器的采样率与支持5G信号的远端信号收发电路的远端AD转换器以及远端DA转换器的采样率是不同的，其中，支持5G信号的远端信号收发电路的远端AD转换器以及远端DA转换器的采样率需要满足245.76Mbps，且反馈采样速率需要满足614.4Msps。
与近端单元10类似，近端单元10和远端单元20之间可采用25G单纤传输或者12.5G双纤传输，远端单元20包括远端光模块，光模块同样需要按照该传输速率进行相应选型。若需要支持更多载波或带宽需要提高传输速率，按上述计算方式进行传输速率计算，确定传输，对光模块及光纤线进行选型即可。
与图8所示的实施例类似，可以理解的是，本申请实施例中，远端信号收发电路与近端信号收发电路相匹配的设置，同样可以按照各种不同制式(2G、3G、4G或5G)的信号所需的采样率、传输速率和反馈采样速率对AD转换器、DA转换器以及光模块进行选型，这样，对应于各近端信号收发电路，各远端信号收发电路中还可以至少存在一个远端信号收发电路支持2G信号、至少存在一个远端信号收发电路支持5G信号；或者，各远端信号收发电路中还可以至少存在一个远端信号收发电路支持3G信号、至少存在一个远端信号收发电路支持5G信号，等等。
在一个实施例中，基于上述实施例的基础上，本实施例直放站的远端单元20的数量可以是多个，参见图9，本申请实施例直放站支持远端扩展功能，该多个远端单元20可以通过星型组网或者链型组网的方式与近端单元10连接。
其中，远端单元20将从近端单元10接收的下行通信信号通过扩展光口发送至扩展的远端单元，通过扩展的远端单元发送至移动台；扩展的远端单元也可以将接收的上行通信信号发射至远端单元20，远端单元20再将从扩展的远端单元接收的信号和远端单元20自身接收的信号发射至近端单元10，近端单元10再将信号通过信源接口中的直接耦合口发射至基站RRU或者通过信源接口中的天线发射至信源基站。
本申请实施例直放站支持远端扩展功能支持扩展，可以根据应用场景灵活组网设计，不需全部从近端接入光纤，降低了施工难度。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。
Claims (17)
- 一种直放站，其特征在于，所述直放站包括近端单元和远端单元，所述近端单元包括相互连接的近端信号收发电路和近端基带处理组件，所述近端信号收发电路包括相互连接的信源端口以及近端上下行传输电路，所述近端信号收发电路用于通过所述信源端口与信源连接，所述信源包括无线信源和射频耦合信源，所述近端上下行传输电路包括无线信号传输电路以及射频耦合信号传输电路；所述近端基带处理组件，用于通过所述近端信号收发电路接收下行通信信号，并确定所述下行通信信号所对应的目标信源，所述目标信源为所述无线信源或者所述射频耦合信源；所述近端基带处理组件，用于检测所述目标信源与目标传输电路是否匹配，所述目标传输电路为所述无线信号传输电路和所述射频耦合信号传输电路中处于通路状态的电路；所述近端基带处理组件，还用于在所述目标信源与所述目标传输电路不匹配的情况下，切换所述无线信号传输电路和所述射频耦合信号传输电路的通断状态。
- 根据权利要求1所述的直放站，其特征在于，所述近端上下行传输电路包括近端下行传输电路，所述近端下行传输电路包括相互并联的无线信号下行传输电路以及射频耦合信号下行传输电路；所述近端基带处理组件，具体用于检测所述目标信源与目标下行传输电路是否匹配，其中，所述目标下行传输电路为所述无线信号下行传输电路以及所述射频耦合信号下行传输电路中处于通路状态的电路；所述近端基带处理组件，具体用于在所述目标信源与所述目标下行传输电路不匹配的情况下，切换所述无线信号下行传输电路和所述射频耦合信号下行传输电路的通断状态。
- 根据权利要求2所述的直放站，其特征在于，所述基带处理组件，具体用于在所述目标信源为所述无线信源，且所述目标下行传输电路为所述射频耦合信号下行传输电路的情况下，将所述射频耦合信号下行传输电路切换为断开状态，并将所述无线信号下行传输电路切换为通路状态；所述基带处理组件，具体用于在所述目标信源为所述射频耦合信源，且所述目标下行传输电路为所述无线信号下行传输电路的情况下，将所述无线信号下行传输电路切换为断开状态，并将所述射频耦合信号下行传输电路切换为通路状态。
- 根据权利要求3所述的直放站，其特征在于，所述近端下行传输电路还包括第一单刀双掷开关和第二单刀双掷开关；所述第一单刀双掷开关包括第一不动端和第一动端，所述第一不动端与所述信源端口连接；所述第二单刀双掷开关包括第二不动端和第二动端，所述第二动端与所述近端基带处理组件连接；所述基带处理组件，具体用于在所述目标信源为所述无线信源，且所述目标下行传输电路为所述射频耦合信号下行传输电路的情况下，将所述第一动端与所述无线信号下行传输电路的一端连接，并将所述第二动端与所述无线信号下行传输电路的另一端连接；所述基带处理组件，具体用于在所述目标信源为所述射频耦合信源，且所述目标下行传输电路为所述无线信号下行传输电路的情况下，将所述第一动端与所述射频耦合信号下行传输电路的一端连接，并将所述第二动端和所述射频耦合信号下行传输电路的另一端连接。
- 根据权利要求2所述的直放站，其特征在于，所述无线信号下行传输电路包括相互串联的第一信号放大器和第二信号放大器；所述射频耦合信号下行传输电路包括下行传输电缆。
- 根据权利要求2所述的直放站，其特征在于，所述近端下行传输电路还包括相互串联的下行电调衰减器、第三信号放大器以及近端AD转换器。
- 根据权利要求2所述的直放站，其特征在于，所述近端上下行传输电路还包括近端上行传输电路，所述近端上行传输电路包括相互并联的无线信号上行传输电路以及射频耦合信号上行传输电路；所述近端基带处理组件，具体用于根据切换后的所述无线信号下行传输电路和所述射频耦合信号下行传输电路的通断状态，切换所述无线信号上行传输电路以及所述射频耦合信号上行传输电路的通断状态。
- 根据权利要求7所述的直放站，其特征在于，所述近端基带处理组件，具体用于若切换后的所述无线信号下行传输电路的通断状态为通路状态，且切换后的所述射频耦合信号下 行传输电路的通断状态为断开状态的情况下，则将所述无线信号上行传输电路切换为通路状态，并将所述射频耦合信号上行传输电路切换为断开状态；所述近端基带处理组件，具体用于若切换后的所述无线信号下行传输电路的通断状态为断开状态，且切换后的所述射频耦合信号下行传输电路的通断状态为通路状态的情况下，则将所述无线信号上行传输电路切换为断开状态，并将所述射频耦合信号上行传输电路切换为通路状态。
- 根据权利要求8所述的直放站，其特征在于，所述近端上行传输电路还包括第三单刀双掷开关和第四单刀双掷开关；所述第三单刀双掷开关包括第三不动端和第三动端，所述第三不动端与所述信源端口连接；所述第四单刀双掷开关包括第四不动端和第四动端，所述第四动端与所述近端基带处理组件连接；所述基带处理组件，将所述无线信号下行传输电路切换为通路状态，并将所述射频耦合信号下行传输电路切换为断开状态之后，还具体用于将所述第三动端和所述无线信号上行传输电路的一端连接，并将所述第四动端和所述无线信号上行传输电路的另一端连接；所述基带处理组件，将所述无线信号下行传输电路切换为断开状态，并将所述射频耦合信号下行传输电路切换为通路状态之后，还具体用于将所述第三动端和所述射频耦合信号上行传输电路的一端连接，并将所述第四动端和所述射频耦合信号上行传输电路的另一端连接。
- 根据权利要求7所述的直放站，其特征在于，所述无线信号上行传输电路包括相互串联的第四信号放大器和第五信号放大器；所述射频耦合信号上行传输电路包括上行传输电缆。
- 根据权利要求7所述的直放站，其特征在于，所述近端上行传输电路还包括相互串联的上行电调衰减器、第六信号放大器以及近端DA转换器。
- 根据权利要求1-11任一项所述的直放站，其特征在于，所述远端单元包括远端信号收发电路和远端基带处理组件，所述远端信号收发电路包括天线端口、远端上行传输电路和 远端下行传输电路，所述远端信号收发电路用于通过所述天线端口与移动台连接；所述远端上行传输电路的一端与所述远端基带处理组件连接，所述远端上行传输电路的另一端与所述天线端口连接；所述远端下行传输电路的一端与所述远端基带处理组件连接，所述远端下行传输电路的另一端与所述天线端口连接。
- 根据权利要求12所述的直放站，其特征在于，所述远端下行传输电路包括远端下行发射电路和远端发射反馈电路。
- 根据权利要求13所述的直放站，其特征在于，所述远端上行传输电路包括第七信号放大器和远端AD转换器；所述远端下行发射电路包括相互串联的远端DA转换器、第八信号放大器和第九信号放大器。
- 根据权利要求14所述的直放站，其特征在于，所述远端单元包括多个所述远端信号收发电路，其中，各所述远端信号收发电路中至少存在两个远端信号收发电路的远端AD转换器的采样率参数不同，且所述两个远端信号收发电路的远端DA转换器的采样率参数不同。
- 根据权利要求11所述的直放站，其特征在于，所述近端单元包括多个所述近端信号收发电路，其中，各所述近端信号收发电路中至少存在两个近端信号收发电路的近端AD转换器的采样率参数不同，且所述两个近端信号收发电路的近端DA转换器的采样率参数不同。
- 根据权利要求1所述的直放站，其特征在于，所述远端单元的数量为多个，多个所述远端单元通过星型组网的方式与所述近端单元连接。
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