WO2016019843A1 - Multi-antenna implementation method, device and system - Google Patents
Multi-antenna implementation method, device and system Download PDFInfo
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- WO2016019843A1 WO2016019843A1 PCT/CN2015/086010 CN2015086010W WO2016019843A1 WO 2016019843 A1 WO2016019843 A1 WO 2016019843A1 CN 2015086010 W CN2015086010 W CN 2015086010W WO 2016019843 A1 WO2016019843 A1 WO 2016019843A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
- H04W16/20—Network planning tools for indoor coverage or short range network deployment
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- the present invention relates to the field of communications technologies, and in particular, to a multi-antenna implementation method, apparatus, and system.
- Multi-input Multiple-Output is one of the cores of the Long Term Evolution (LTE) system. It is provided by deploying a large number of antennas indoors and outdoors. More space freedom, which in turn improves system performance. Considering the limitations of the antenna installation space and the processing power of the terminal, the outdoor system of the commercial LTE system generally adopts a two-antenna transmission mode. In order to further improve system performance, technologies such as massive MIMO have emerged as the evolution of MIMO technology. Massive MIMO provides more degrees of freedom by introducing a large number of antennas, thereby increasing system capacity.
- LTE Long Term Evolution
- the above-mentioned plurality of antennas are usually placed in an iron tower, a roof or other high places, connected to a remote radio unit (RRU) through a feeder, and then connected to a baseband unit through an optical fiber.
- RRU remote radio unit
- BBU Baseband Unit
- the antenna feeder system of the base station needs to be upgraded in order to support the large-scale antenna, and since the antenna is large in size, a large number of antennas need to occupy a large amount of space, which greatly increases the deployment cost.
- the BBU and the RRU are set on the base station side, and the signal is distributed to each floor through a feeder connected to the base station, and the signal power is allocated to the floor through the coupler of each floor, and the signal after the power is distributed.
- the power splitter further divides the power and transmits it through the antenna. Since the above indoor system uses a single feeder, no matter whether the base station of the system has several antenna ports, it will be configured as a single antenna channel, so the indoor system can only support single input and single output (Single- Input Single-Output, hereinafter referred to as SISO), cannot support MIMO, so multi-antenna technology cannot be implemented.
- SISO Single- Input Single-Output
- Embodiments of the present invention provide a multi-antenna implementation method, apparatus, and system, which can implement multi-antenna technology without increasing antenna deployment, thereby improving system performance without increasing cost.
- an indoor multi-antenna system in a first aspect, includes: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, and at least one signal transmitting and receiving branch connected to the feeder, and At least one remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;
- the LMU is configured to frequency-convert other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals to obtain other antenna channel signals after frequency conversion, wherein each of the other antenna channel signals after the frequency conversion is used The frequency of the signal is different;
- the combining unit is configured to combine the first antenna channel signal and the frequency-converted other antenna channel signals to obtain a combined signal; and the combined signal is transmitted to the at least one signal through the feeder Transmitting and transmitting a branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;
- the RMB is used to restore a frequency point of at least one of the converted other antenna channel signals to the same frequency point as the first antenna channel signal, to obtain at least one of the received combined signals. Recovering the antenna channel signal, and transmitting the at least one restored antenna channel signal to the user equipment;
- the user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the first antenna channel signal in the combined signal, and receive the at least one recovery sent by at least one of the RMB Rear antenna channel signal.
- the method further includes:
- the user equipment is configured to send an uplink signal to the one signal transceiver branch and the at least one RMB;
- the RMB is configured to receive the uplink signal, perform frequency conversion on the received uplink signal, obtain an up-converted uplink signal, and send the frequency-converted uplink signal to the one signal transceiver branch;
- the one signal transmitting and receiving branch is configured to receive the uplink signal and the frequency-converted uplink signal, and pass the uplink signal and the frequency-converted uplink signal as one signal
- the feeder is transmitted to the LMU;
- the LMU is configured to restore the frequency-converted uplink signal to the same frequency point as the uplink signal, obtain a recovered uplink signal, and transmit the uplink signal and the recovered uplink signal to the Said base station.
- the combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;
- the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;
- the LMU is externally connected to the base station or built in the base station;
- the signal transmitting branch includes: a coupler, a power splitter, and at least one antenna, an input end of the coupler is connected to the feeder, an output of the coupler, and an input of the power splitter The terminals are connected, and the output of the power splitter is connected to each of the antennas.
- the combining unit is specifically configured to:
- the reference clock signal includes a signal with a frequency of 10 MHz or a signal with a frequency of 122.88 MHz;
- the preset synchronization signal is a control signal for transmitting and receiving switching
- the operation and maintenance signal includes at least one of a gain control signal, a delay control signal, and a phase adjustment signal.
- the RMB is further configured to:
- a transmission characteristic parameter of a downlink of the RMB includes at least one of an amplification gain, a delay parameter, and a phase parameter.
- the RMB is further configured to:
- the downlink transmission characteristic parameter includes an amplification gain At least one of a delay parameter and a phase parameter.
- the base station is further configured to:
- a downlink transmission characteristic parameter of the RMB adjusting, according to the uplink signal sent by the user equipment, or a channel status indication sent by the user equipment, a downlink transmission characteristic parameter of the RMB, where the downlink transmission characteristic parameter includes an amplification At least one of a gain, a delay parameter, and a phase parameter.
- the base station is further configured to:
- the parameters of the signals transmitted by the multiple antenna channels of the base station are adjusted according to the initial transmission characteristic parameters of the downlink of the RMB, so that the antenna channel signals transmitted by the multiple antenna channels are adjusted.
- the error of the parameter is within the preset range;
- the initial transmission characteristic parameter of the downlink includes: at least one of an amplification gain, a delay parameter, and a phase parameter;
- the parameters of the antenna channel signal include at least one of delay, amplitude, and phase.
- the user equipment is further configured to acquire measurement results according to all antenna channel signals that the user equipment can receive, and Transmitting the measurement result to the base station, where the measurement result includes a signal to noise ratio of each antenna channel signal that can be received;
- the base station is further configured to adopt a proportional fairness criterion according to the measurement result, the data scheduled by the user equipment in a specified time, and the current data transmission rate of the user equipment.
- the user equipment schedules time-frequency resources.
- the second aspect provides a local multiple input multiple output unit LMU.
- the LMU includes: at least one downlink transmission unit, where the downlink transmission unit includes: a first frequency converter, a first filter, a first power amplification module, and a first Diplexer;
- a signal of any antenna channel of the base station is input from a first input end of the first frequency converter, and an output end of the first frequency converter is connected to an input end of the first filter, the first filtering
- An output end of the device is connected to an input end of the first power amplifying module, an output end of the first power amplifying module is connected to an input end of the first duplexer, and an output end of the first duplexer Connect the feeders in the indoor multi-antenna system.
- the downlink transmission unit further includes: a second filter, a power splitter, a second power amplification module, and a first phase locked loop;
- the input end of the second filter is used to input a reference clock signal, the output end of the second filter is connected to the input end of the power splitter, and the first output end of the power splitter is connected to the An input end of the first phase locked loop, an output end of the first phase locked loop is connected to a second input end of the first frequency converter, and a second output end of the power splitter is connected to the second power amplification module
- the input end of the second power amplifying module is connected to the first duplexer;
- a preset synchronization signal and an operation and maintenance signal are connected to the first duplexer.
- the LMU further includes: at least one uplink transmission unit, where the uplink transmission unit includes: a second duplex , a third power amplification module, a fourth power amplification module, a second frequency converter, a third filter, and a fifth power amplification module;
- the input end of the second duplexer is connected to a feeder in the indoor multi-antenna system, and the first output end of the second duplexer is connected to the input end of the third power amplifying module, the third power
- the output end of the amplification module is connected to the base station in the indoor multi-antenna system; the second output end of the second duplexer is connected to the input end of the fourth power amplification module, and the output end of the fourth power amplification module
- the output of the fifth power amplifying module is connected to the base station.
- the uplink transmission unit further includes: a sixth power amplification module and a second phase locked loop;
- the input end of the sixth power amplifier is used to input a reference clock signal, the output end of the sixth power amplifier is connected to the input end of the second phase locked loop, and the output end of the second phase locked loop is connected. a second input of the second frequency converter.
- the second power amplifying module, the third power amplifying module, the fourth power amplifying module, the a five power amplification module, the sixth power amplification module is a power amplifier
- the first power amplification module is composed of a gain adjustable power amplifier and a power amplifier connected in series.
- a remote input multiple output box RMB includes: at least one downlink transmission unit, a first antenna, and a second antenna, where the downlink transmission unit includes: a first duplexer, a first power An amplification module, a first frequency converter, a first filter, and a second power amplification module;
- the first antenna is connected to an input end of the first duplexer, and a first output end of the first duplexer is connected to an input end of the first power amplifier, where the first power amplification module is The output end is connected to the first input end of the first frequency converter, the output end of the first frequency converter is connected to the input end of the first filter, and the output end of the first filter is connected to the second power An input end of the amplification module, and an output end of the second power amplification module is connected to the second antenna.
- the downlink transmission unit further includes: a third power amplification module, a first phase locked loop;
- the second output end of the first duplexer is connected to the input end of the third power amplifying module, and the second output end of the first duplexer is configured to output the received reference clock signal
- the output end of the third power amplifying module is connected to the input end of the phase locked loop, and the output end of the phase locked loop is connected to the second input end of the first frequency converter.
- the RMB further includes: at least one uplink transmission unit, where the uplink transmission unit includes: a second filter a fourth power amplification module, a second frequency converter, a third filter, and a fifth power amplification module;
- the first antenna is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the fourth power amplifying module, and the output end of the fourth power amplifying module is connected.
- a first input end of the second frequency converter, an output end of the second frequency converter is connected to an input end of the third filter, and an output end of the third filter is connected to an input of the fifth power amplifier
- the output of the fifth power amplifier is connected to the second antenna.
- the uplink transmission unit further includes: a fourth filter, a power splitter, and a second phase locked loop;
- the input end of the fourth filter is used to input a reference clock signal
- the output end of the fourth filter is connected to the input end of the power splitter
- the output end of the power splitter is connected to the second An input end of the phase locked loop
- an output end of the second phase locked loop is connected to the second input end of the second frequency converter.
- the first power amplification module, the third power amplification module, and the fourth power amplification module are power amplifiers
- the second power amplification module and the fifth power amplification module are composed of a gain adjustable power amplifier and a power amplifier connected in series.
- an indoor multi-antenna system includes: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, and at least one signal transmitting and receiving branch connected to the feeder, and At least one remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;
- the base station is configured to perform an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform IDFT on the first antenna channel signal of the multiple antenna channel signals to obtain a discrete first antenna channel signal, and the first antenna channel Other antenna channel signals other than the signal are combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals;
- the LMU is configured to modulate the discrete other antenna channel signals to obtain modulated other antenna channel signals
- the base station buffers the modulated first antenna channel signal and transmits the signal to the combining unit, and the LMU transmits the modulated other antenna channel signal to the combining unit;
- the combining unit is configured to combine the discrete first antenna channel signals with the modulated other antenna channel signals to obtain a combined signal; the combining unit passes the combined road through the feeder Transmitting a signal to the at least one signal transceiving branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;
- the RMB is configured to demodulate at least one of the modulated other antenna channel signals into the received combined signal to obtain at least one demodulated other antenna channel signal, and then perform the demodulation
- the other antenna channel signals are FFT or DFT to remove the first data, obtain the original signal of at least one other antenna channel signal, and then perform the IFFT or IDFT on the original signal of the at least one other antenna channel signal to obtain at least one a discrete other antenna channel signal that is the same as a frequency of the discrete first antenna channel signal, and the at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal Said user equipment to send;
- the user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the discrete first antenna channel signal in the combined signal, and receive the at least one of the at least one of the RMB transmissions A discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal.
- the combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;
- the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;
- the LMU is externally connected to the base station or built in the base station;
- the signal transmitting branch includes: a coupler, a power splitter, at least one antenna, an input end of the coupler is connected to the feed line, and an output end of the coupler is connected to an input end of the power splitter The output of the power splitter is connected to each of the antennas.
- the fifth aspect provides an outdoor multi-antenna system, where the outdoor multi-antenna system includes: a base station, a local module, a first antenna module, a second antenna module, at least one evolved remote radio unit, and at least one evolved remote module;
- the base station outputs a plurality of antenna channel signals to At least two antenna channel signals are in a group, and the number of signals in each group of antenna channel signals is the same;
- the local module is configured to send at least one group of antenna channel signals except the first group of antenna channel signals to the at least one evolved remote radio unit through the second antenna module;
- the evolved remote radio unit is configured to receive at least one of the at least one set of antenna channel signals Transmitting the signal to the another evolved remote radio unit; if the next stage of the evolved remote radio unit is the evolved remote module, the evolved remote radio unit is configured to receive the at least Each of the antenna channel signals of the set of antenna channel signals is respectively frequency-converted at different frequency points to obtain at least one set of frequency-converted antenna channel signals, and sent to the evolved remote module;
- the evolved remote module is configured to restore a frequency point corresponding to each of the at least one set of the converted antenna channel signals to each of the first group of antenna channel signals At least a set of recovered antenna channel signals are obtained from the frequency of the channel signal and sent to the user equipment;
- the user equipment is configured to receive the first group of antenna channel signals sent by the first antenna module, and receive the at least one set of restored antenna channel signals sent by the infinite remote module.
- the user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;
- the evolved remote module is further configured to perform signal synchronization and analog-to-digital conversion processing on the received uplink signal, and convert the processed signal into an in-phase orthogonal IQ data signal, and forward the IQ data signal to the
- the evolved remote radio unit of the evolved remote module is sent by the evolved remote radio unit;
- the evolved remote radio unit is further configured to send the received IQ data signal to the second antenna module;
- the upper stage of the remote radio unit is another evolved remote radio unit.
- the remote radio unit is further configured to send the received IQ data signal to the another evolved remote radio unit until being sent to the second antenna module;
- the base station is further configured to receive the uplink signal received by the first antenna module, and receive the IQ data signal that is received by the local module by using the second antenna module.
- the user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;
- the evolved remote module is further configured to perform frequency conversion on the uplink signal to obtain a frequency-converted uplink signal, and send the uplink signal to the evolved remote radio unit of the egress of the evolved remote module;
- the evolved remote radio unit is further configured to send the received uplink signal to the second antenna module;
- the evolved remote radio unit is further configured to send the received uplink signal to the another evolved remote radio unit. Until being sent to the second antenna module;
- the local module is further configured to restore a frequency point of the frequency-converted uplink signal received by the second antenna module to a frequency point that is the same as the uplink signal, to obtain a recovered uplink signal, and to the Sending, by the base station, the recovered uplink signal;
- the base station is further configured to receive the uplink signal received by the first antenna module, and receive the restored uplink signal sent by the local module.
- the first evolved remote module is further configured to transmit a signal to the second evolved remote module, where the signal includes any one of the converted antenna channel signal, the IQ data signal, and the frequency-converted uplink signal. ;
- the first evolved remote module and the second evolved remote module are any two evolved remote modules of the at least one evolved remote module.
- a multi-antenna implementation method comprising:
- the device sends, so that the user equipment acquires the first antenna channel signal in the combined signal, and receives at least one of the at least one restored antenna channel signal sent by the RMB.
- the method further includes:
- a multi-antenna implementation method comprising:
- an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform (IDFT) on the first antenna channel signal of the plurality of antenna channel signals to obtain a discrete first antenna channel signal, and using the antenna other than the first antenna channel signal
- the channel signal is combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals
- the modulated first antenna channel signal is buffered and combined with the modulated other antenna channel signals to obtain a combined signal
- the user equipment sends, so that the user equipment receives the combined signal sent by a signal transceiver branch, acquires the discrete first antenna channel signal in the combined signal, and receives at least one of the RMB transmissions.
- the at least one other discrete antenna channel signal that is the same as the frequency of the discrete first antenna channel signal.
- another multi-antenna implementation method comprising:
- each set of antenna channel signals comprises at least one of a plurality of antenna channel signals output by the base station Two antenna channel signals, and the number of signals in each group of antenna channel signals is the same;
- the evolved remote radio unit After the at least one evolved remote radio unit receives the at least one antenna channel signal, if the next stage of the evolved remote radio unit is another evolved remote radio unit, the evolved far end The radio unit transmits at least one of the received at least one set of antenna channel signals to the another evolved remote radio unit; if the next stage of the evolved remote radio unit is the evolution The remote module, the evolved remote radio unit performs frequency conversion of each of the at least one set of the antenna channel signals of the at least one set of antenna channel signals to obtain at least one And converting the antenna channel signal to the evolved remote module, so as to receive the frequency of each of the at least one set of the converted antenna channel signals received by the evolved remote module Point corresponding to recovering to a frequency point of each antenna channel signal of the first group of antenna channel signals, obtaining at least one set of recovered antenna channel signals, and providing the user with the antenna channel signal Preparation transmission, so that the user equipment is configured to receive the first group of antenna channel signal and the antenna signal recovery channel at least one group.
- the method further includes:
- the method further includes:
- the frequency point of the received up-converted uplink signal is restored to the same frequency point as the uplink signal, and the recovered uplink signal is obtained.
- the embodiments of the present invention provide a multi-antenna implementation method, apparatus, and system.
- an antenna channel other than the first antenna channel signal is outputted by the LMU through multiple antenna channel signals output by the base station.
- the signal is frequency-converted at different frequency points, and then the first antenna channel signal is combined with the frequency-converted other antenna channel signals, and the obtained combined signal is simultaneously sent to the UE and the RMB, wherein the RMB is converted after the frequency conversion.
- the frequency point of at least one of the other antenna channel signals is restored to the original frequency point and is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal, and the frequency point recovery of the at least one signal.
- a group of antenna channel signals are sent to the UE through the first antenna module, and the other group antenna channel signals are transmitted to the evolved remote radio unit through the second antenna module, and the remote radio unit is evolved.
- the other antenna channel signals are frequency-converted and transmitted to the evolved remote module, and the other remote antenna channels are converted by the evolved remote module. After re-conversion to restore the original frequency, and sends the UE, so that the UE can simultaneously receive multiple sets of antenna channel signal.
- FIG. 1 is a schematic diagram of downlink transmission of an indoor multi-antenna system according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of uplink transmission of an indoor multi-antenna system according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of an LMU according to an embodiment of the present disclosure.
- FIG. 4 is another schematic structural diagram of an LMU according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of an RMB according to an embodiment of the present disclosure.
- FIG. 6 is another schematic structural diagram of an RMB according to an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of utilizing discrete spectrum transmission of an indoor multi-antenna system according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of downlink transmission of an outdoor multi-antenna system according to an embodiment of the present invention.
- FIG. 9 is a schematic diagram of uplink transmission of an outdoor multi-antenna system according to an embodiment of the present invention.
- FIG. 10 is another schematic diagram of uplink transmission of an outdoor multi-antenna system according to an embodiment of the present disclosure.
- FIG. 11 is a schematic flowchart diagram of a method for implementing multiple antennas according to an embodiment of the present invention.
- FIG. 12 is a schematic flowchart of downlink transmission of a multi-antenna implementation method according to an embodiment of the present disclosure
- FIG. 13 is a schematic flowchart of uplink transmission of a multi-antenna implementation method according to an embodiment of the present disclosure
- FIG. 14 is a schematic flowchart diagram of another multi-antenna implementation method according to an embodiment of the present invention.
- FIG. 15 is a schematic flowchart diagram of still another method for implementing multiple antennas according to an embodiment of the present invention.
- FIG. 16 is a schematic flowchart of downlink transmission of another multi-antenna implementation method according to an embodiment of the present disclosure
- FIG. 17 is a schematic flowchart of uplink transmission of another multi-antenna implementation method according to an embodiment of the present disclosure.
- FIG. 18 is a schematic flowchart of uplink transmission of another multi-antenna implementation method according to an embodiment of the present invention.
- An embodiment of the present invention provides an indoor multi-antenna system. As shown in FIG. 1 , the indoor multi-antenna system includes:
- the indoor multi-antenna system can serve a plurality of user equipments (User Equipments, hereinafter referred to as UEs) located within the signal range of the system.
- UEs User Equipments
- the base station outputs multiple antenna channel signals.
- the LMU is configured to frequency-convert other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals to obtain other antenna channel signals after the frequency conversion, wherein each of the other antenna channel signals after the frequency conversion has different frequency points.
- the combining unit is configured to combine the first antenna channel signal with the converted other antenna channel signals to obtain a combined signal; the combined signal is transmitted to the at least one signal transmitting and receiving branch through the feeder, and is to the user equipment and the at least one RMB Send a combined signal.
- the RMB is used to restore the frequency of at least one of the converted other antenna channel signals to the same frequency as the first antenna channel signal, to obtain at least one restored antenna channel signal, and Sending at least one recovered antenna channel signal to the user equipment.
- the UE is configured to receive a combined signal sent by a signal transmitting and receiving branch, acquire a first antenna channel signal in the combined signal, and receive at least one restored antenna channel signal sent by at least one RMB.
- the plurality of antenna channel signals output by the base station are antenna channel signals 0 to 3, respectively, as shown in FIG. 1, and are respectively recorded as p0 to p3.
- the p0 to p3 may be an LTE radio frequency signal, and the optional p0 to p3 may further include at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal provided by the base station.
- the reference clock signal may be a signal with a frequency of 10 MHz or a signal with a frequency of 122.88 MHz (of course, it may also be a signal of other frequencies). If a Time Division Duplexing (TDD) is used, the preset synchronization is performed.
- the signal can be a control signal for TDD transceiving switching.
- Operation and maintenance signals include device switching signals (for switching RMB), gain control signals, delay control signals, and phase adjustment signals. At least one of them.
- the LMU frequency-converts p1 to p3, and the frequency after the frequency conversion may be 5.2 GHz or 3.5 GHz, or other frequencies than the original frequency point.
- the frequency of p1 to p3 after frequency conversion is different, and the purpose is to prevent interference from each other when p0 to p1 are transmitted through the same feeder.
- the combining unit combines p0 and the converted p1 to p3 (the combined way refers to combining the multiple signals into one channel for transmission), and the combining unit can be a combiner or a duplexer. Specific can be used:
- the LMU is provided with another built-in combiner.
- the built-in combiner can first combine and output p1 ⁇ p3, and then combine the combined unit and p0 to obtain a combined signal; or the LMU directly P1 to p3 are input to the combining unit and combined to obtain a combined signal.
- the combination signal includes at least p0 and the converted p1 to p3.
- the base station further provides at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal
- the combination signal further includes a reference. At least one of a clock signal, a preset synchronization signal, and an operation and maintenance signal.
- the combining unit may be built in the LMU or externally connected to the LMU, and the LMU may be built in the base station or externally connected to the base station, where the base station may be an eNB, including an RRU and a BBU.
- the LMU is external to the base station, and the combining unit is external to the LMU.
- Other possible implementations are not shown.
- the structure of the signal transmitting and receiving branch can be as shown in FIG. 1 (signal transmitting and receiving branches 1 to 3 shown in FIG. 1), including : coupler, splitter, at least one antenna, the input end of the coupler is connected to the feeder, the output of the coupler is connected to the input of the splitter, and the output of the splitter is connected to each antenna (Fig. 1 The number of antennas connected to the power splitter shown is two or three).
- Each of the signal transmission and reception branches is generally located in a different area, such as in a building, and each of the layers is provided with one of the above signal transmission and reception branches.
- the combined signal is distributed by the coupler connected to the feeder, the combined signal is transmitted to the splitter on each signal receiving and dispatching branch, and the splitter further distributes the transmit power (generally equal power) for each antenna. Finally, the combined signal is sent out by radiating outward.
- the RMB and the UE in the signal coverage sent by the signal transmitting and receiving branch can receive the combined signal. After receiving the combined signal, the UE can only recognize the combined path because p1 to p3 are converted in the combined signal. P0 in the signal.
- Each of the RMBs shown in FIG. 1 recovers one of the signals p1 to p3, wherein the RAM1 covered by the top-to-bottom signal transmission and reception branch 1 recovers the frequency of p1, and the signal transmission and reception branch 2 covers the The recovery of RMB2 is also the frequency of p1.
- the three RMB1 ⁇ 3 covered by the signal transmission and reception branch 3 recover the frequency points of p1, p2 and p3 respectively.
- each of the RMB can recover several signals. Can be achieved by configuring RMB.
- the RMB transmits the recovered at least one signal to the UE.
- the UE can receive both p0 and at least one of p1 to p3 sent by the RMB.
- the signal transmission and reception branch 1 The UE1 under the coverage receives p0 and p1 at the same time, and the UE2 covered by the signal transmission and reception branch 2 receives p0 and p1 at the same time, and the UE3 covered by the signal transmission and reception branch 3 simultaneously receives p0 to p3. It can be seen that through the wireless transmission mode, MIMO is realized in the downlink transmission of the indoor system, and the system performance is improved.
- RMB Resource Management Function
- the UE is configured to send an uplink signal to a signal transceiver branch and at least one RMB;
- RMB is used for receiving the uplink signal, and frequency-converting the received uplink signal to obtain an up-converted uplink signal, and transmitting the frequency-converted uplink signal to a signal transmitting and receiving branch;
- a signal transmitting and receiving branch is used for receiving the uplink signal and the converted uplink signal, and transmitting the uplink signal and the converted uplink signal as one signal to the LMU through the feeder;
- the LMU is configured to restore the up-converted uplink signal to the same frequency as the uplink signal, obtain the recovered uplink signal, and transmit the uplink signal and the recovered uplink signal to the base station.
- UE1 sends out an uplink signal, denoted as p
- the signal range covers the signal transmission and reception branch 1 of the UE1, and the signal range of the signal transmission and reception branch 1.
- the internal RMB1 can receive the uplink signal.
- RMB1 After receiving p, RMB1 converts p, and the frequency after the frequency conversion can be 5.2GHz or 3.5GHz, or the frequency other than the original frequency point, the frequency signal p' after the frequency conversion is obtained, and p' Send outside.
- the reference clock signal may also be the same as the reference clock signal in the river channel acquired by the UE1 from the base station during downlink transmission.
- the signal transmission/reception branch 1 After the signal transmission/reception branch 1 acquires the frequency-converted uplink signal p', it transmits p' and the received one-way signal to the LMU.
- the LMU After acquiring the signal, the LMU sends the p in the signal to the base station, and p' is again frequency-converted to obtain p", so that the frequency of p" is the same as p (which can be understood as p" is to restore p' Go back to p) and then p" to the base station. Therefore, the base station can receive the uplink signals p and p". It can be seen that, by means of wireless transmission, MIMO is also implemented in the uplink transmission of the indoor system, thereby improving system performance.
- the LMU structure provided by the embodiment of the present invention may be as shown in FIG. 3, and includes:
- At least one downlink transmission unit 1 the downlink transmission unit includes: a first frequency converter 101, a first filter 102, a first power amplification module 103, and a first duplexer 104;
- the signal of any antenna channel of the base station is input from the first input end of the first frequency converter 101, and the output end of the first frequency converter 101 is connected to the input end of the first filter 103, and the output end of the first filter 102 Connected to the input end of the first power amplifying module 103, the output end of the first power amplifying module 103 is connected to the input end of the first duplexer 104, and the output end of the first duplexer 104 is connected to the feeder in the indoor multi-antenna system. .
- the downlink transmission unit 1 can perform frequency conversion on one antenna channel signal. Therefore, when the LMU sets multiple downlink transmission units 1, the multiple antenna channel signals can be simultaneously converted.
- the downlink transmission unit 1 may further include: a second filter 105, a power divider 106, a second power amplification module 107, and a first phase locked loop 108;
- the input end of the second filter 105 is used to input the reference clock signal, the output end of the second filter 105 is connected to the input end of the power splitter 106, and the first output end of the power splitter 106 is connected to the first phase-locked loop.
- 108 input end, the output end of the first phase locked loop 108 is connected to the second input end of the first frequency converter 101, and the second output end of the power splitter 106 is connected to the input of the second power amplifying module 107
- the first duplexer 104 connected to the output of the second power amplifying module 107;
- the aforementioned preset synchronization signal and operation and maintenance signal are connected to the first duplexer 104.
- the first power amplifying module may be composed of a gain adjustable power amplifier and a power amplifier (large gain), and the second power amplifying module may also be a power amplifier.
- the LMU may further include at least one uplink transmission unit 2, where the uplink transmission unit 2 includes: a second duplexer 201, a third power amplification module 202, and a fourth power amplification module 203.
- the uplink transmission unit 2 includes: a second duplexer 201, a third power amplification module 202, and a fourth power amplification module 203.
- the input end of the second duplexer 201 is connected to the feeder in the indoor multi-antenna system, and the first output end of the second duplexer 201 is connected to the input end of the third power amplifying module 202, and the output of the third power amplifying module 202 is output.
- the second output end of the second duplexer 201 is connected to the input end of the fourth power amplifying module 203, and the output end of the fourth power amplifying module 203 is connected to the first end of the second frequency converter 204.
- the input end of the second frequency converter 204 is connected to the input end of the third filter 205, the output end of the third filter 205 is connected to the output end of the fifth power amplifying module 206, and the output end of the fifth power amplifying module 206 is connected.
- Base station The input end of the second frequency converter 204 is connected to the input end of the third filter 205, the output end of the third filter 205 is connected to the output end of the fifth power amplifying module 206, and the output end of the fifth power amplifying module 206 is connected.
- Base station
- the uplink transmission unit 2 further includes: a sixth power amplification module 207 and a second phase locked loop 208;
- the input end of the sixth power amplifier 207 is used to input the reference clock signal, the output end of the sixth power amplifier 207 is connected to the input end of the second phase locked loop 208, and the output end of the second phase locked loop 208 is connected to the second frequency converter.
- the second input of 204 is used to input the reference clock signal.
- the third, fourth, fifth, and sixth power amplification modules may be power amplifiers.
- the structure of the RMB provided by the embodiment of the present invention includes: at least one downlink transmission unit 3, a first antenna 00, and a second antenna 01.
- the downlink transmission unit 3 includes: a first duplexer 301, and a first power.
- the first antenna 00 is connected to the input end of the first duplexer 301, the first output end of the first duplexer 301 is connected to the input end of the first power amplifier 302, and the output end of the first power amplifying module 302 is connected to the first end.
- the first input end of the frequency converter 303, the output end of the first frequency converter 303 is connected to the input end of the first filter 304, and the output end of the first filter 304 is connected to the second power amplification.
- the output of the second power amplifying module 305 is connected to the second antenna 01.
- the downlink transmission unit 3 can perform frequency conversion recovery on one antenna channel signal. Therefore, when the plurality of downlink transmission units 3 are set by the RMB, the multiple antenna channel signals can be simultaneously restored by frequency conversion.
- the downlink transmission unit 3 may further include: a third power amplification module 306, a first phase locked loop 307;
- the second output end of the first duplexer 301 is connected to the input end of the third power amplifying module 306, and the second output end of the first duplexer 301 is used to output the received reference clock signal, and the third power amplifying module
- the output end of the first phase-locked loop 307 is connected to the input end of the first phase-locked loop 307, and the output end of the first phase-locked loop 307 is connected to the second input end of the first frequency converter 303.
- the first power amplification module and the third power amplification module may be a power amplifier, and the second power amplification module is composed of a gain adjustable power amplifier and a power amplifier connected in series.
- the RMB may further include:
- the at least one uplink transmission unit 4 includes: a second filter 401, a fourth power amplification module 402, a second frequency converter 403, a third filter 404, and a fifth power amplification module 405;
- the first antenna 00 is connected to the input end of the second filter 401, the output end of the second filter 401 is connected to the input end of the fourth power amplifying module 402, and the output end of the fourth power amplifying module 402 is connected to the second inverter 403.
- the first input end, the output end of the second frequency converter 403 is connected to the input end of the third filter 404, the output end of the third filter 404 is connected to the input end of the fifth power amplifier 405, and the output end of the fifth power amplifier 405
- the second antenna 01 is connected.
- the uplink transmission unit 4 further includes: a fourth filter 406, a power divider 407, and a second phase locked loop 408;
- the input end of the fourth filter 406 is used to input the reference clock signal, the output end of the fourth filter 406 is connected to the input end of the splitter 407, and the output end of the splitter 407 is connected to the input of the second phase locked loop 408.
- the output end of the second phase locked loop 408 is connected to the second input end of the second frequency converter 403.
- the fourth power amplifying module is a power amplifier, for example, may be a low noise power amplifier
- the fifth power amplifying module is a power amplifier, which may be a gain adjustable power amplifier. It is composed in series with a power amplifier.
- the RMB may adjust the downlink transmission characteristic parameter of the RMB according to the foregoing operation and maintenance signal, where the transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
- the RMB may further adjust the downlink transmission characteristic parameter of the RMB according to the received combined signal or according to an uplink signal sent by the UE (for example, according to a signal strength, a delay, and the like of the uplink signal).
- the transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
- the base station may further adjust the downlink transmission characteristic parameter of the RMB according to the uplink signal sent by the user equipment or the channel status indication sent by the user equipment, where the transmission characteristic parameter of the downlink includes the amplification gain and the time. At least one of a delay parameter and a phase parameter.
- the above adjustment of the amplification gain can be implemented by configuring a power amplifier with adjustable gain, or by configuring a numerically controlled adjustable attenuator (not shown); adjusting the delay and phase can be configured by configuring a numerically controlled delay line.
- the phase shifter is implemented by a method such as buffer delay transmission (not shown in the figure).
- the base station may further adjust parameters of the signals transmitted by the multiple antenna channels of the base station according to the initial transmission characteristic parameter of the downlink of the RMB, so that the antenna channel signals transmitted by the multiple antenna channels are The error of the parameter is within the preset range;
- the initial transmission characteristic parameter of the downlink includes: at least one of an amplification gain, a delay parameter, and a phase parameter;
- the parameters of the antenna channel signal include at least one of delay, amplitude, and phase.
- the UE may also obtain measurement results according to all antenna channel signals that the user equipment can receive, and send the measurement result to the base station.
- the measurement results include, but are not limited to, a signal to noise ratio of each antenna channel signal that can be received.
- the base station may use the proportional fairness criterion to schedule time-frequency resources for the user equipment according to the measurement result, the data scheduled by the user equipment, and the current data transmission rate of the user equipment.
- the signal converted by the antenna channel signal is a continuous spectrum signal, and may be a discrete spectrum signal, as shown in FIG.
- At least one Inverse Fast Fourier Transform (IFFT) module or an Inverse Discrete Fourier Transform (IDFT) module is set in the base station in the antenna system (which can be set in the BBU).
- buffer can be set in the BBU and / or RRU, the transmit channel module is correspondingly set for each signal;
- the demodulation module, the Fast Fourier Transform (FFT) module or the discrete is set in the RMB
- a Fourier Transform (DFT) module, an IFFT module or an IDFT module, and a transmission channel module, and the processing methods include:
- the IFFT module in the BBU performs IFFT or IDFT on the first antenna channel signal of the plurality of antenna channel signals output by the base station to obtain a discrete first antenna channel signal, and the first antenna channel signal and other antenna channel signals are first.
- Data for example, data "0" can be combined for IFFT or IDFT) to obtain discrete other antenna channel signals;
- the LMU modulates the discrete other antenna channel signals (which can be modulated to 3.5 GHz or other possible frequencies) to obtain modulated other antenna channel signals;
- the modulated first antenna channel signal is input into the buffer, and is buffered into the transmission channel module (where the modulated first antenna channel signal input buffer is used to enable the signal to be sent to the UE and the signal sent to the UE by the RMB) Synchronizing in time), and transmitting the modulated other antenna channel signals to the combining unit through the transmitting channel module, the combining unit combining the first antenna channel signal with the modulated other antenna channel signals , get the combined signal;
- the combining unit sends the combined signal to the respective signal transmitting and receiving branches through the feeder, and is configured to send the combined signal to the user equipment and the at least one RMB;
- Receiving, by the RMB, the combined signal, at least one of the modulated other antenna channel signals in the combined signal is demodulated by a synchronization module to obtain at least one demodulated other antenna
- the channel signal is subjected to FFT or DFT processing on the demodulated other antenna channel signals by the FFT module or the DFT module to obtain an original signal of at least one other antenna channel signal, and finally, other antenna channels obtained by the IFFT module or the IDFT module are obtained.
- the original signal of the signal is subjected to IFFT or IDFT processing to obtain discrete other antenna channel signals having the same frequency as the discrete first antenna channel signal (notably, since the aforementioned discrete other antenna channel signals are combined with the first data Do IFFT or IDFT, so it is different from the discrete other antenna channel signals obtained here).
- the RMB transmits the obtained discrete antenna channel signals to the UE.
- the UE simultaneously receives the discrete first antenna channel signal and the discrete other antenna channel signals. Since the discrete first antenna channel signal is processed by the buffer before transmission, the UE discrete first antenna channel signal and discrete Other antenna channel signals are synchronized in time.
- a plurality of antenna channel signals output by a base station are antenna channel signals 0 to 3, respectively, which are denoted as p0 to p3, and corresponding to p0 to p3 in the BBU of the base station.
- buffers are set for p0.
- the LMU can be externally connected to the base station. It can also be built in the base station.
- the built-in base station is taken as an example (shown in FIG. 7 and built in the RRU).
- the above IFFT module can be replaced with an IDFT module
- the FFT module can be replaced with a DFT module.
- the p0 is subjected to IFFT processing by the IFFT module 0 to obtain a discrete spectrum signal p0'.
- P1 to p3 and data "0" are subjected to IFFT processing by IFFT modules 1 to 3, respectively, to obtain discrete spectrum signals p1" to p3".
- P0' is input to the buffer of the BBU, and is input to the transmission channel 0 through the buffer of the RRU.
- P1" to p3" are input to the transmission channels 1 to 3, respectively.
- Each of the input channels respectively combines the above p0', p1" ⁇ p3" through a combining unit (which may be a duplexer) to obtain a combined signal, and transmits the combined signal to the signal transmitting and receiving branch through the feeding line.
- a combining unit which may be a duplexer
- the RMB After receiving the combined signal, the RMB processes at least one of p1" ⁇ p3" in the combined signal. If two or more signals in p1" ⁇ p3" are to be processed simultaneously, it is necessary to have at least two sets of RMB.
- the following modules demodulation module, FFT module, IFFT module, transmission channel module. This assumes that RMB only processes p1", then:
- the RMB demodulates p1" by the demodulation module to obtain the demodulated p1"', and then FFTs the p1"' by the FFT module, removes the data "0", and obtains the original data p1 of p1"', and finally P1 is subjected to IFFT processing by the IFFT module to obtain p1' of the same frequency point as p0'.
- the RMB transmits p1' to the UE, at which time the UE simultaneously receives p0' in the combined signal and p1' transmitted from the RMB.
- the storage time of p0' in the cache of the BBU and the RRU may be determined according to actual conditions, such as the processing time of the reference RMB, and other possible delay synthesis.
- p0' and p1' received by the UE are synchronized in time. It can be seen that through another wireless transmission mode, MIMO is also implemented in the uplink transmission of the indoor system, thereby improving system performance.
- the indoor multi-antenna system performs frequency conversion of different antenna channels other than the first antenna channel signal of the plurality of antenna channel signals output by the base station through the LMU during downlink transmission. And combining the first antenna channel signal with the frequency-converted other antenna channel signals, and simultaneously transmitting the obtained combined signal to the UE and the RMB, wherein the RMB is in the other antenna channel signals after the frequency conversion After the frequency of the at least one signal is restored to the original frequency, the UE is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency recovery of the at least one signal, thereby
- the method implements MIMO in downlink transmission; in uplink transmission, the UE simultaneously sends an uplink signal to the signal transmission and reception branch and the RMB, and then the RMB transmits the frequency-converted uplink signal to the signal transmission and reception branch, and the LMU further converts the uplink signal after the frequency conversion.
- the recovery signal and the received uplink signal are sent to the base station, thereby implementing the M in the uplink mode by wireless.
- IMO can be seen to enable multi-antenna technology without increasing antenna deployment, thereby improving system performance without increasing cost.
- An embodiment of the present invention provides an outdoor multi-antenna system. As shown in FIG. 8, the outdoor multi-antenna system includes:
- LM local module
- RRU evolved remote radio unit
- aRM evolved remote module
- the base station For downlink transmission, the base station outputs multiple antenna channel signals, and at least two antenna channel signals are grouped, and the number of signals in each group of antenna channel signals is the same;
- the LM is configured to send at least one group of antenna channel signals except the first group of antenna channel signals to the at least one aRRU through the second antenna module;
- the aRRU is configured to send at least one of the received at least one set of antenna channel signals to another aRRU; if the next level of the aRRU is aRM, the aRRU is used At least one of the at least one set of antenna channel signals to be received Each antenna channel signal of a group of antenna channel signals is respectively frequency-converted at different frequency points to obtain at least one group of frequency-converted antenna channel signals, and is sent to the aRM;
- the aRM is configured to restore a frequency point corresponding to each of the received at least one set of the converted antenna channel signals to a frequency point of each antenna channel signal of the first group of antenna channel signals, to obtain at least one The restored antenna channel signal is sent to the UE;
- the UE is configured to receive the first group of antenna channel signals sent by the first antenna module, and receive at least one group of the restored antenna channel signals sent by the aRM.
- the first antenna module and the second antenna module in this embodiment are also dual antennas, and multiple antenna channels of the base station are transmitted.
- the antenna channel signal can be grouped by two signals. For example, if the antenna channel signal of the base station has p0, p1, p2, p3, p2', p3', p2", p3", it can be divided into p0/p1, p2. Four groups of /p3, p2'/p3', p2"/p3" ("/" means "and"), wherein the signals of each group may be the same signal or different signals.
- the foregoing base station may be an eNB, including: a BBU, an RRU, a BBU, and an RRU, where the LM and the BBU are connected.
- P0/p1 is directly transmitted by the RRU to the UE through the first antenna module (hereinafter, UE1 is taken as an example), and p2/p3, p2'/p3', p2"/p3" are transmitted by the LM to the aRRU through the second antenna module.
- the data transmission between the LM and the aRRU can be implemented digitally through a Common Public Radio Interface (CPRI).
- CPRI Common Public Radio Interface
- aRRU0 transmits at least one of p2/p3, p2'/p3', p2"/p3" to aRRU1 of the lower stage after receiving p2/p3, p2'/p3', p2"/p3".
- the exemplary aRRU0 in Figure 8 sends p2/p3, p2'/p3' to aRRU1.
- the data transmission between aRRU can also be realized digitally through CPRI.
- p2/p3 and p2'/p3' are frequency-converted at different frequencies, that is, p2' becomes a frequency point, and p3' becomes another frequency. point.
- the converted p2'/p3' is then sent to aRM1.
- the data transmission between aRRU and aRM can be through the air interface.
- aRM1 After aRM1 receives p2'/p3', it converts p2'/p3' again, restores the frequency of p2' to the same frequency as p0, and restores the frequency of p3' to the same frequency as p1, and then Then send the restored p2'/p3' to UE1, at this time UE1 can receive p0/p1 and P2'/p3'.
- the reference clock signal may also be introduced when the frequency conversion is performed, and the signal is provided by the base station and sent together with the antenna channel signal, or the signal may be a GPS signal.
- UE1 can also receive p0/p1, p2/p3, p2'/p3', p2"/p3", and the base station transmits p0/p1, p2/p3, p2'/p3', P2"/p3" is merely exemplary.
- the base station may also send more groups of signals, and the UE can also receive more groups of signals at the same time. It can be seen that the antenna channel can be increased in a large amount without increasing the number of antennas.
- the signal realizes massive MIMO of downlink transmission by means of wireless, and improves system performance.
- the aRRU can send the signal to aRM0 first and aRM0 to aRM1.
- the data transmission between aRM can be realized in an analog manner through the air interface.
- the aRM may also be directly connected to the LM through the second antenna module, and the transmission method is similar to the downlink transmission method of the RMB connected to the LMU in the foregoing embodiment.
- the UE is further configured to send an uplink signal to the first antenna module and an aRM;
- the aRM is further configured to perform signal synchronization and analog-to-digital conversion processing on the received uplink signal, and convert the processed signal into an IQ data signal, and send the IQ data signal to the aRRU of the upper aRM;
- the aRRU is further configured to send the received IQ data signal to the second antenna module; if the upper level of the aRRU is another aRRU, the aRRU is further used to send the received IQ data signal to another An aRRU is sent until it is sent to the second antenna module;
- the base station is further configured to receive an uplink signal received by the first antenna module, and receive an IQ data signal that is received by the local module by using the second antenna module.
- UE1 sends an uplink signal to aRM1 of the upper level, which is assumed to be p.
- aRM1 performs signal synchronization and analog-to-digital conversion processing on the received p, and converts the processed signal into an in-phase (Quadrature, hereinafter referred to as: IQ) data signal, and passes the IQ data signal through the upper level of aRM1.
- IQ Quadrature
- At least one aRRU is sent to the second antenna module.
- aRM1 sends an IQ data signal to the transmitting aRRU1, and aRRU1 sends an IQ to aRRU0.
- the data signal, aRRU0 sends an IQ data signal to the second antenna module, the second antenna module transmits the IQ data signal to the LM, and the LM transmits the IQ data signal to the BBU of the base station, and the first antenna module passes the received uplink signal p.
- the RRU is transmitted to the BBU. It can be seen that the BBU of the base station simultaneously receives the two sets of signals of the IQ data signal and the uplink signal p.
- the uplink transmission can include:
- the UE is further configured to send an uplink signal to the first antenna module and an aRM;
- the aRM is also used to frequency-convert the uplink signal to obtain the up-converted uplink signal, and send it to the aRRU of the upper aRM;
- the aRRU is further configured to send the received up-converted uplink signal to the second antenna module; if the upper level of the aRRU is another aRRU, the aRRU is also used to receive the received frequency conversion.
- the uplink signal is sent to another aRRU until it is sent to the second antenna module;
- the LM is further configured to restore the frequency point of the frequency-converted uplink signal received by the second antenna module to the same frequency point as the uplink signal, obtain the recovered uplink signal, and send the restored uplink signal to the base station;
- the base station is further configured to receive an uplink signal received by the first antenna module, and receive the restored uplink signal sent by the LM.
- UE1 is still taken as an example, and UE1 sends an uplink signal to aRM1 of the upper level, which is assumed to be p.
- the aRM1 After receiving the p, the aRM1 converts p to obtain p', and then transmits the converted p' to the second antenna module through at least one aRRU. As shown in FIG. 9, aRM1 sends the converted p', aRRU1 to aRRU1. After transmitting the converted p' to aRRU0, aRRU0 sends the converted p' to the second antenna module.
- the second antenna module After receiving the converted p', the second antenna module sends the converted p' to the LM, and the LM converts the converted p' to the frequency, and restores the frequency of the converted p' to the same frequency as p.
- Point to get p" (which can be understood as p) is to restore p' back to p,), and then send the recovered p" to the base station, at which time the base station receives both p and recovered p" signals.
- the aRM may also be directly connected to the LM through the second antenna module, and the transmission method is similar to the uplink transmission method of the RMB connected to the LMU in the foregoing embodiment.
- the LM may be built in the base station or externally connected to the base station, and FIG. 8, FIG. 9, and FIG. 10 are built in the base station.
- the base station can receive two signals at the same time.
- the foregoing is merely exemplary. Since the outdoor system may serve many UEs, the base station may also receive more groups by the above method.
- the signal can be seen that, without increasing the number of antennas, the antenna channel signal can be greatly increased, and the large-scale MIMO of the uplink transmission is realized by the wireless method, thereby improving the system performance.
- the outdoor multi-antenna system transmits a set of antenna channel signals to the UE through the first antenna module in the downlink transmission, and transmits the signals of the other group antenna channels to the UE through the second antenna module.
- aRRU converts the other groups of antenna channel signals to aRM, re-converts the other groups of antenna channel signals after amplification, restores the original frequency points, and sends them to the UE, so that the UE can receive multiple sets of antennas at the same time.
- the channel signal is used to implement large-scale MIMO in the downlink mode.
- the first antenna module receives the uplink signal sent by the UE, and sends the uplink signal to the base station, and the aRM receives the transmitted uplink signal to perform the uplink signal.
- the series is processed and sent to the aRRU, which is sent by the aRRU to the second antenna module, and is sent to the base station, so that the base station can receive multiple sets of antenna channel signals at the same time, thereby implementing large-scale MIMO in the uplink transmission in a wireless manner.
- Multi-antenna technology without increasing antenna deployment, enabling cost without increasing costs Under conditions to improve system performance.
- An embodiment of the present invention provides a multi-antenna implementation method, which can be applied to the foregoing indoor multi-antenna system. As shown in FIG. 11, the method includes:
- S103 Send a combined signal to the UE and the at least one remote input multiple output box RMB, so that the frequency at least one of the converted other antenna channel signals in the received combined signal of the received combined signal of the RMB is received. Recovering to the same frequency as the first antenna channel signal, obtaining at least one recovered antenna channel signal, and at least one restored antenna The channel signal is sent to the UE, so that the UE acquires the first antenna channel signal in the combined signal and receives at least one restored antenna channel signal sent by the at least one RMB.
- the multi-antenna implementation method provided by the embodiment of the present invention uses the LMU to perform frequency conversion of different antenna channels other than the first antenna channel signal of the plurality of antenna channel signals output by the base station, and then converts the first antenna channel signal and the frequency conversion. After the other antenna channel signals are combined, the combined combined signals are simultaneously sent to the UE and the RMB, wherein the RMB transmits the frequency of at least one of the other antenna channel signals after the frequency conversion is restored to the original frequency point. Up to the UE, enabling the UE to simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency point recovery of the at least one signal, thereby implementing MIMO in a wireless manner, which can be seen without increasing the antenna deployment. Implement multi-antenna technology to improve system performance without increasing costs.
- the indoor multi-antenna system includes: a base station, an LMU, a combining unit, a feeder, at least one signal transmitting and receiving branch connected to the feeder, and at least one RMB.
- the method includes:
- the LMU frequency-converts other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals output by the base station, and obtains other antenna channel signals after the frequency conversion, wherein the frequency of each of the other antenna channel signals after the frequency conversion is converted. The point is different.
- the combining unit combines the first antenna channel signal with the converted other antenna channel signals to obtain a combined signal.
- the signal transceiving branch sends a combined signal to the UE and the at least one remote input multi-output box RMB.
- the RMB restores a frequency point of at least one of the converted other antenna channel signals in the received combined signal to the same frequency as the first antenna channel signal, to obtain at least one restored antenna channel signal.
- the RMB sends at least one recovered antenna channel signal to the UE.
- the UE acquires a first antenna channel signal in the combined signal, and receives at least one restored antenna channel signal sent by the at least one RMB.
- the method includes:
- the signal transceiver branch receives the uplink signal sent by the UE, and receives the frequency-converted uplink signal sent by the at least one RMB.
- the LMU restores the frequency-converted uplink signal to the same frequency as the uplink signal, and obtains the restored uplink signal.
- the LMU sends an uplink signal and a recovered uplink signal to the base station.
- the multi-antenna implementation method provided by the embodiment of the present invention performs frequency conversion of different antenna channel signals other than the first antenna channel signal of multiple antenna channel signals output by the base station through the LMU during downlink transmission. And combining the first antenna channel signal with the converted other antenna channel signals, and simultaneously transmitting the obtained combined signal to the UE and the RMB, wherein the at least one of the other antenna channel signals of the RMB after the frequency conversion is performed After the frequency point is restored to the original frequency point, the UE is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency point recovery of at least one signal, thereby transmitting in the downlink manner through the wireless manner.
- MIMO is implemented; in the uplink transmission, the UE simultaneously sends the uplink signal to the signal transmission and reception branch and the RMB, and then the RMB transmits the frequency-converted uplink signal to the signal transmission and reception branch, and the LMU restores the converted uplink signal to the original signal. After the frequency point, the recovered signal and the received uplink signal are sent to the base station, so that MIMO is also realized in the uplink mode by wireless, which is visible. Multi-antenna technology can be implemented without increasing antenna deployment, enabling system performance to be improved without increasing cost.
- the embodiment of the present invention further provides another multi-antenna implementation method, which may be applied to the foregoing indoor multi-antenna system, where the indoor multi-antenna system includes: a base station, an LMU, a combining unit, a feeder, at least one signal transceiving branch connected to the feeder, and at least one RMB; wherein the base station outputs a plurality of antenna channel signals.
- the method includes:
- IFFT inverse fast Fourier transform
- IDFT Inverse Discrete Fourier Transform
- S303 Cache the modulated first antenna channel signal and combine the modulated other antenna channel signals to obtain a combined signal.
- S304 Send the combined signal to the UE and the at least one RMB, so that the RMB that receives the combined signal will receive at least one of the modulated other antenna channel signals to obtain at least one demodulation.
- the demodulated other antenna channel signals are subjected to Fast Fourier Transform (FFT) or Discrete Fourier Transform (DFT) to remove the first data.
- FFT Fast Fourier Transform
- DFT Discrete Fourier Transform
- the multi-antenna implementation method provided by the embodiment first performs IFFT or IDFT processing on the first antenna channel signal of the plurality of antenna channel signals output by the base station, and performs IFFT or the other antenna channel signal and the first data. IDFT processing, and then the obtained plurality of discrete antenna channel signals are combined and sent to the transmitting UE and the at least one RMB, and the RMB receiving the combined signal demodulates the received combined signal and demodulates the other
- the antenna channel signal performs FFT or DFT to remove the first data, and obtains the original signal of at least one other antenna channel signal.
- the embodiment of the present invention further provides a multi-antenna implementation method, which can be applied to the foregoing outdoor multi-antenna system. As shown in FIG. 15, the method includes:
- each group of antenna channel signals includes at least two antenna channel signals of the plurality of antenna channel signals output by the base station. And the number of signals in each group of antenna channel signals is the same.
- the aRRU After the at least one aRRU receives at least one set of antenna channel signals, if the next stage of the aRRU is another aRRU, the aRRU transmits at least one of the at least one set of antenna channel signals to the other aRRU. Transmitting; if the next level of the aRRU is aRM, the aRRU performs frequency conversion of each of the at least one set of the antenna channel signals of the at least one set of antenna channel signals to obtain at least one group The converted antenna channel signal is sent to the aRM, so that the aRM restores the frequency corresponding to each of the received at least one set of the converted antenna channel signals to the signal of the first group of antenna channels. At least a set of recovered antenna channel signals are obtained from the frequency points of each antenna channel signal, and are transmitted to the UE, so that the UE is configured to receive the first group of antenna channel signals and the at least one set of restored antenna channel signals.
- the outdoor multi-antenna system includes: a base station, an LM, a first antenna module, a second antenna module, at least one aRRU, and at least one aRM; wherein the base station outputs a plurality of antenna channel signals, at least two The antenna channel signals are a group, and the number of signals in each group of antenna channel signals is the same.
- the method includes:
- the base station sends, by using the first antenna module, a first group of antenna channel signals to the UE.
- the LM sends, by using the second antenna module, at least one group of antenna channel signals except the first group of antenna channel signals to the at least one aRRU.
- S503 After the at least one set of antenna channel signals is received by the aRRU, if the next level of the aRRU is another aRRU, then S504 is performed; if the next level of the aRRU is aRM, then S505 is performed.
- the aRRU sends at least one of the received at least one set of antenna channel signals to another aRRU.
- the aRRU performs frequency conversion of each of the at least one set of antenna channel signals of the at least one set of antenna channel signals to obtain a minimum frequency of the antenna channel signals, and obtains at least one set of the converted antenna channel signals, and sends the signal to the aRM. send.
- the aRM restores the frequency point corresponding to each of the at least one set of the converted antenna channel signals to a frequency point of each antenna channel signal in the first group of antenna channel signals, to obtain at least one.
- the recovered antenna channel signal is sent to the UE.
- the UE receives the first group of antenna channel signals and the at least one group of restored antenna channel signals.
- the method includes:
- the base station receives an uplink signal sent by the UE.
- the base station receives the IQ data signal sent by the at least one aRRU.
- the IQ data signal is subjected to signal synchronization and analog-to-digital conversion processing on the uplink signal by the aRM, and the processed signal is converted and sent to the aRRU.
- the uplink signal is received by the base station by using the first antenna module, and the IQ data signal sent by the at least one aRRU is received by the LM from the second antenna module.
- the order of S508, S509 shown in Fig. 17 is merely exemplary, and in actual case, S508, S509 can also be performed simultaneously.
- the method includes:
- the base station receives an uplink signal sent by the user equipment.
- the LM receives the frequency-converted uplink signal sent by at least one aRRU.
- the up-converted uplink signal is generated by aRM converting the uplink signal and sent to the aRRU.
- S512 and LM restore the frequency of the received uplink signal to the same frequency as the uplink signal, obtain the recovered uplink signal, and send the restored uplink signal to the base station.
- the base station receives the restored uplink signal sent by the LM. Therefore, the base station obtains the uplink signal sent by the user equipment and the restored uplink signal sent by the LM.
- the multi-antenna implementation method provided by the embodiment of the present invention transmits a set of antenna channel signals to the UE through the first antenna module in the downlink transmission, and transmits the signals of the other group antenna channels to the UE through the second antenna module.
- aRRU converts the other groups of antenna channel signals to aRM, re-converts the other groups of antenna channel signals after amplification, restores the original frequency points, and sends them to the UE, so that the UE can receive multiple sets of antennas at the same time.
- the channel signal is used to implement large-scale MIMO in the downlink mode.
- the first antenna module receives the uplink signal sent by the UE, and sends the uplink signal to the base station, and the aRM receives the transmitted uplink signal to perform the uplink signal.
- the series is processed and sent to the aRRU, which is sent by the aRRU to the second antenna module, and is sent to the base station, so that the base station can receive multiple sets of antenna channel signals at the same time, thereby implementing large-scale MIMO in the uplink transmission in a wireless manner.
- Multi-antenna technology without increasing antenna deployment, enabling cost without increasing costs Under conditions to improve system performance.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some connections.
- the indirect coupling or communication connection of the port, device or unit may be in electrical, mechanical or other form.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
Provided are a multi-antenna implementation method, device and system. In a multi-antenna system, frequency conversion of different frequency points is performed via an LMU on signals within a plurality of antenna channel signals outputted by a base station except for one signal, and the signals which have undergone frequency conversion and the signal which has not undergone frequency conversion are sent to a UE and RMBs after being combined, the RMBs restoring the signals which have undergone frequency conversion to the original frequency points and sending the signals to the UE, so that the UE simultaneously receives the signal within the combined signals which has not undergone frequency conversion and the restored signals sent by the RMBs. The UE can thus simultaneously receive a plurality of signals without the number of antennae being increased. Therefore, multi-antenna technology can be implemented without increasing antenna deployment, and system performance can be improved without increasing costs.
Description
本发明实施涉及通信技术领域,尤其涉及一种多天线实现方法、装置及***。The present invention relates to the field of communications technologies, and in particular, to a multi-antenna implementation method, apparatus, and system.
通过多天线技术实现多输入多输出(Multiple-Input Multiple-Output,以下简称:MIMO)是长期演进(Long Term Evolution,以下简称LTE)***的核心之一,通过在室内和室外部署大量天线,提供更多的空间自由度,进而提升***性能。考虑到天线安装空间、终端处理能力的限制,目前商用LTE***室外***,一般采用两天线的发送方式。为了进一步提升***性能,massive(大规模)MIMO等技术作为MIMO技术的演进应运而生,massive MIMO通过引入大量天线,提供更多的自由度,从而提升***容量。在一种现有技术中,上述大量天线通常集中放置于铁塔、楼顶或其它高处,通过馈线连接到远端射频单元(Remote Radio Unit,以下简称:RRU),再通过光纤连接到基带单元(Baseband Unit,以下简称:BBU)。上述室外***中由于采用的是双天线***,因此为了支持大规模天线需要升级基站的天馈***,并且由于天线的体积较大,大量的天线需要占用大量的空间,大大增加了部署成本。Multi-input Multiple-Output (MIMO) is one of the cores of the Long Term Evolution (LTE) system. It is provided by deploying a large number of antennas indoors and outdoors. More space freedom, which in turn improves system performance. Considering the limitations of the antenna installation space and the processing power of the terminal, the outdoor system of the commercial LTE system generally adopts a two-antenna transmission mode. In order to further improve system performance, technologies such as massive MIMO have emerged as the evolution of MIMO technology. Massive MIMO provides more degrees of freedom by introducing a large number of antennas, thereby increasing system capacity. In a prior art, the above-mentioned plurality of antennas are usually placed in an iron tower, a roof or other high places, connected to a remote radio unit (RRU) through a feeder, and then connected to a baseband unit through an optical fiber. (Baseband Unit, hereinafter referred to as BBU). In the above outdoor system, since the dual antenna system is adopted, the antenna feeder system of the base station needs to be upgraded in order to support the large-scale antenna, and since the antenna is large in size, a large number of antennas need to occupy a large amount of space, which greatly increases the deployment cost.
而目前商用LTE***室内***,BBU和RRU设置在基站侧,信号通过连接该基站的一条馈线分布到各个楼层,通过每个楼层的耦合器为该楼层分配信号功率,分配功率后的信号再通过功分器进一步等分功率后通过天线发射。上述室内***中由于采用的是单一馈线,因此无论该***的基站有几条天线通道(port),都会被配置为单天线通道来使用,因此该室内***只能支持单输入单输出(Single-Input Single-Output,以下简称:SISO),而不能支持MIMO,因此不能实现多天线技术。
In the current commercial LTE system indoor system, the BBU and the RRU are set on the base station side, and the signal is distributed to each floor through a feeder connected to the base station, and the signal power is allocated to the floor through the coupler of each floor, and the signal after the power is distributed. The power splitter further divides the power and transmits it through the antenna. Since the above indoor system uses a single feeder, no matter whether the base station of the system has several antenna ports, it will be configured as a single antenna channel, so the indoor system can only support single input and single output (Single- Input Single-Output, hereinafter referred to as SISO), cannot support MIMO, so multi-antenna technology cannot be implemented.
发明内容Summary of the invention
本发明实施例提供一种多天线实现方法、装置及***,能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。Embodiments of the present invention provide a multi-antenna implementation method, apparatus, and system, which can implement multi-antenna technology without increasing antenna deployment, thereby improving system performance without increasing cost.
第一方面,提供一种室内多天线***,所述室内多天线***包括:基站、本地多输入多输出单元LMU、合路单元、馈线、与所述馈线连接的至少一条信号收发支路,以及至少一个远端输入多输出盒子RMB;其中,所述基站输出多个天线通道信号;In a first aspect, an indoor multi-antenna system is provided. The indoor multi-antenna system includes: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, and at least one signal transmitting and receiving branch connected to the feeder, and At least one remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;
所述LMU用于将所述多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中所述变频后的其他天线通道信号中每个信号的频点不同;The LMU is configured to frequency-convert other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals to obtain other antenna channel signals after frequency conversion, wherein each of the other antenna channel signals after the frequency conversion is used The frequency of the signal is different;
所述合路单元用于将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,得到合路信号;所述合路信号通过所述馈线传输至所述至少一条信号收发支路,并向用户设备和至少一个所述RMB发送所述合路信号;The combining unit is configured to combine the first antenna channel signal and the frequency-converted other antenna channel signals to obtain a combined signal; and the combined signal is transmitted to the at least one signal through the feeder Transmitting and transmitting a branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;
所述RMB用于将接收到的所述合路信号中,所述变频后的其他天线通道信号中至少一个信号的频点恢复至与所述第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将所述至少一个恢复后的天线通道信号向所述用户设备发送;The RMB is used to restore a frequency point of at least one of the converted other antenna channel signals to the same frequency point as the first antenna channel signal, to obtain at least one of the received combined signals. Recovering the antenna channel signal, and transmitting the at least one restored antenna channel signal to the user equipment;
所述用户设备用于接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个恢复后的天线通道信号。The user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the first antenna channel signal in the combined signal, and receive the at least one recovery sent by at least one of the RMB Rear antenna channel signal.
结合第一方面,在第一种可能的实现方式中,还包括:In combination with the first aspect, in the first possible implementation manner, the method further includes:
所述用户设备用于向所述一条信号收发支路和至少一个所述RMB发送上行信号;The user equipment is configured to send an uplink signal to the one signal transceiver branch and the at least one RMB;
所述RMB用于接收所述上行信号,并对接收到的所述上行信号进行变频,得到变频后的上行信号,并向所述一条信号收发支路发送所述变频后的上行信号;The RMB is configured to receive the uplink signal, perform frequency conversion on the received uplink signal, obtain an up-converted uplink signal, and send the frequency-converted uplink signal to the one signal transceiver branch;
所述一条信号收发支路用于接收所述上行信号以及所述变频后的上行信号,并将所述上行信号和所述变频后的上行信号作为一路信号通过
所述馈线传输至所述LMU;The one signal transmitting and receiving branch is configured to receive the uplink signal and the frequency-converted uplink signal, and pass the uplink signal and the frequency-converted uplink signal as one signal
The feeder is transmitted to the LMU;
所述LMU用于将所述变频后的上行信号的恢复至与所述上行信号相同的频点,得到恢复后的上行信号,并将所述上行信号和所述恢复后的上行信号传输至所述基站。The LMU is configured to restore the frequency-converted uplink signal to the same frequency point as the uplink signal, obtain a recovered uplink signal, and transmit the uplink signal and the recovered uplink signal to the Said base station.
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实现方式中,With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner,
所述合路单元外接于所述LMU,其中,所述LMU的第一端与所述基站连接,所述LMU的第二端与所述合路单元的第一端连接,所述合路单元的第二端通过所述馈线与每条所述信号收发支路连接;The combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;
或者,所述合路单元内置于所述LMU中,所述LMU的第一端与所述基站连接,所述LMU的第二端与通过所述馈线与每条所述信号收发支路连接;Alternatively, the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;
所述LMU外接于所述基站,或者内置于所述基站中;The LMU is externally connected to the base station or built in the base station;
其中,所述信号发射支路包括:耦合器、功分器、至少一根天线,所述耦合器的输入端与所述馈线连接、所述耦合器的输出端与所述功分器的输入端连接,所述功分器的输出端与每根所述天线连接。The signal transmitting branch includes: a coupler, a power splitter, and at least one antenna, an input end of the coupler is connected to the feeder, an output of the coupler, and an input of the power splitter The terminals are connected, and the output of the power splitter is connected to each of the antennas.
结合第一方面的第二种可能的实现方式,在第三种可能的实现方式中,所述合路单元具体用于:In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the combining unit is specifically configured to:
获取所述基站输出的预设频率的参考时钟信号、预设同步信号、操作维护信号中的至少一种;Obtaining at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal of a preset frequency output by the base station;
将所述第一天线通道信号、所述变频后的其他天线通道信号,以及所述预设频率的信号、所述预设同步信号、所述操作维护信号中的至少一种进行合路,得到所述合路信号。Combining the first antenna channel signal, the frequency-converted other antenna channel signal, and the signal of the preset frequency, the preset synchronization signal, and the operation and maintenance signal to obtain a path The combined signal.
结合第一方面的第三种可能的实现方式,在第四种可能的实现方式中,所述参考时钟信号包括频率为10MHz的信号或频率为122.88MHz的信号;With reference to the third possible implementation of the first aspect, in a fourth possible implementation, the reference clock signal includes a signal with a frequency of 10 MHz or a signal with a frequency of 122.88 MHz;
当所述室内多天线***应用于时分双工***时,所述预设同步信号为收发切换的控制信号;When the indoor multi-antenna system is applied to a time division duplex system, the preset synchronization signal is a control signal for transmitting and receiving switching;
所述操作维护信号包括增益控制信号、时延控制信号、相位调整信号中的至少一种。
The operation and maintenance signal includes at least one of a gain control signal, a delay control signal, and a phase adjustment signal.
结合第一方面的第四种可能的实现方式,在第五种可能的实现方式中,所述RMB还用于:In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation, the RMB is further configured to:
根据所述操作维护信号对所述RMB的下行链路的传输特性参数进行调整,所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。And adjusting, according to the operation and maintenance signal, a transmission characteristic parameter of a downlink of the RMB, where the transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
结合第一方面的第一种可能的实现方式,在第六种可能的实现方式中,所述RMB还用于:In conjunction with the first possible implementation of the first aspect, in a sixth possible implementation, the RMB is further configured to:
根据接收到的所述合路信号,或者根据所述用户设备发送的所述上行信号,对所述RMB的下行链路的传输特性参数进行调整;所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。Adjusting, according to the received combined signal, or according to the uplink signal sent by the user equipment, a downlink transmission characteristic parameter of the RMB; the downlink transmission characteristic parameter includes an amplification gain At least one of a delay parameter and a phase parameter.
结合第一方面的第一种可能的实现方式,在第七种可能的实现方式中,所述基站还用于:In conjunction with the first possible implementation of the first aspect, in a seventh possible implementation, the base station is further configured to:
根据所述用户设备发送的所述上行信号的,或所述用户设备发送的信道状态指示,对所述RMB的下行链路的传输特性参数进行调整,所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。And adjusting, according to the uplink signal sent by the user equipment, or a channel status indication sent by the user equipment, a downlink transmission characteristic parameter of the RMB, where the downlink transmission characteristic parameter includes an amplification At least one of a gain, a delay parameter, and a phase parameter.
结合第一方面的第二种可能的实现方式,在第八种可能的实现方式中,所述基站还用于:With reference to the second possible implementation of the first aspect, in an eighth possible implementation, the base station is further configured to:
在初始化时,根据所述RMB的下行链路的初始传输特性参数对所述基站的所述多条天线通道所传输的信号的参数进行调整,使得所述多条天线通道所传输的天线通道信号的参数的误差在预设范围内;During initialization, the parameters of the signals transmitted by the multiple antenna channels of the base station are adjusted according to the initial transmission characteristic parameters of the downlink of the RMB, so that the antenna channel signals transmitted by the multiple antenna channels are adjusted. The error of the parameter is within the preset range;
其中,所述下行链路的初始传输特性参数包括:放大增益、时延参数、相位参数中的至少一种;The initial transmission characteristic parameter of the downlink includes: at least one of an amplification gain, a delay parameter, and a phase parameter;
所述天线通道信号的参数包括时延、幅度、相位中的至少一种。The parameters of the antenna channel signal include at least one of delay, amplitude, and phase.
结合第一方面的第二种可能的实现方式,在第九种可能的实现方式中,所述用户设备还用于根据所述用户设备能够接收到的所有天线通道信号获取测量结果,并将所述测量结果发送至所述基站,所述测量结果包括能够接收到的各个天线通道信号的信噪比;With reference to the second possible implementation of the first aspect, in a ninth possible implementation, the user equipment is further configured to acquire measurement results according to all antenna channel signals that the user equipment can receive, and Transmitting the measurement result to the base station, where the measurement result includes a signal to noise ratio of each antenna channel signal that can be received;
所述基站还用于根据所述测量结果、规定时间内所述用户设备已调度的数据以及所述用户设备当前的数据传输速率,采用比例公平准则为
所述用户设备调度时频资源。The base station is further configured to adopt a proportional fairness criterion according to the measurement result, the data scheduled by the user equipment in a specified time, and the current data transmission rate of the user equipment.
The user equipment schedules time-frequency resources.
第二方面,提供一种本地多输入多输出单元LMU所述LMU包括:至少一个下行传输单元,所述下行传输单元包括:第一变频器、第一滤波器、第一功率放大模块和第一双工器;The second aspect provides a local multiple input multiple output unit LMU. The LMU includes: at least one downlink transmission unit, where the downlink transmission unit includes: a first frequency converter, a first filter, a first power amplification module, and a first Diplexer;
其中,基站的任一天线通道的信号从所述第一变频器的第一输入端输入,所述第一变频器的输出端与所述第一滤波器的输入端连接,所述第一滤波器的输出端与所述第一功率放大模块的输入端连接,所述第一功率放大模块的输出端与所述第一双工器的输入端连接,所述第一双工器的输出端连接室内多天线***中的馈线。Wherein, a signal of any antenna channel of the base station is input from a first input end of the first frequency converter, and an output end of the first frequency converter is connected to an input end of the first filter, the first filtering An output end of the device is connected to an input end of the first power amplifying module, an output end of the first power amplifying module is connected to an input end of the first duplexer, and an output end of the first duplexer Connect the feeders in the indoor multi-antenna system.
结合第二方面,在第一种可能的实现方式中,所述下行传输单元还包括:第二滤波器、功分器、第二功率放大模块和第一锁相环;With reference to the second aspect, in a first possible implementation, the downlink transmission unit further includes: a second filter, a power splitter, a second power amplification module, and a first phase locked loop;
其中,所述第二滤波器的输入端用于输入参考时钟信号,所述第二滤波器的输出端连接所述功分器的输入端,所述功分器的第一输出端连接所述第一锁相环的输入端,所述第一锁相环的输出端连接所述第一变频器的第二输入端,所述功分器的第二输出端连接所述第二功率放大模块的输入端,所述第二功率放大模块的输出端连接所述的第一双工器;The input end of the second filter is used to input a reference clock signal, the output end of the second filter is connected to the input end of the power splitter, and the first output end of the power splitter is connected to the An input end of the first phase locked loop, an output end of the first phase locked loop is connected to a second input end of the first frequency converter, and a second output end of the power splitter is connected to the second power amplification module The input end of the second power amplifying module is connected to the first duplexer;
预设同步信号和操作维护信号连接所述第一双工器。A preset synchronization signal and an operation and maintenance signal are connected to the first duplexer.
结合第二方面或第二方面的第一种可能的实现方式,在第二种可能的实现方式中,所述LMU还包括:至少一个上行传输单元,所述上行传输单元包括:第二双工器、第三功率放大模块、第四功率放大模块、第二变频器、第三滤波器、第五功率放大模块;With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation, the LMU further includes: at least one uplink transmission unit, where the uplink transmission unit includes: a second duplex , a third power amplification module, a fourth power amplification module, a second frequency converter, a third filter, and a fifth power amplification module;
其中,所述第二双工器的输入端连接室内多天线***中的馈线,所述第二双工器的第一输出端连接所述第三功率放大模块的输入端,所述第三功率放大模块的输出端连接所述室内多天线***中的基站;所述第二双工器的第二输出端连接所述第四功率放大模块的输入端,所述第四功率放大模块的输出端连接所述第二变频器的第一输入端,所述第二变频器的输出端连接所述第三滤波器的输入端,所述第三滤波器的输出端连接所述第五功率放大模块的输出端,所述第五功率放大模块的输出端连接所述基站。The input end of the second duplexer is connected to a feeder in the indoor multi-antenna system, and the first output end of the second duplexer is connected to the input end of the third power amplifying module, the third power The output end of the amplification module is connected to the base station in the indoor multi-antenna system; the second output end of the second duplexer is connected to the input end of the fourth power amplification module, and the output end of the fourth power amplification module Connecting a first input end of the second frequency converter, an output end of the second frequency converter is connected to an input end of the third filter, and an output end of the third filter is connected to the fifth power amplification module The output of the fifth power amplifying module is connected to the base station.
结合第二方面的第二种可能的实现方式,在第三种可能的实现方式
中,所述上行传输单元还包括:第六功率放大模块和第二锁相环;In conjunction with the second possible implementation of the second aspect, in a third possible implementation
The uplink transmission unit further includes: a sixth power amplification module and a second phase locked loop;
其中,所述第六功率放大器的输入端用于输入参考时钟信号,所述第六功率放大器的输出端连接所述第二锁相环的输入端,所述第二锁相环的输出端连接所述第二变频器的第二输入端。The input end of the sixth power amplifier is used to input a reference clock signal, the output end of the sixth power amplifier is connected to the input end of the second phase locked loop, and the output end of the second phase locked loop is connected. a second input of the second frequency converter.
结合第二方面的第三种可能的实现方式,在第四种可能的实现方式中,所述第二功率放大模块、所述第三功率放大模块、所述第四功率放大模块、所述第五功率放大模块、所述第六功率放大模块为功率放大器;With reference to the third possible implementation of the second aspect, in a fourth possible implementation, the second power amplifying module, the third power amplifying module, the fourth power amplifying module, the a five power amplification module, the sixth power amplification module is a power amplifier;
所述第一功率放大模块由增益可调功率放大器和一功率放大器串联组成。The first power amplification module is composed of a gain adjustable power amplifier and a power amplifier connected in series.
第三方面,提供一种远端输入多输出盒子RMB,所述RMB包括:至少一个下行传输单元、第一天线和第二天线,所述下行传输单元包括:第一双工器、第一功率放大模块、第一变频器、第一滤波器、第二功率放大模块;In a third aspect, a remote input multiple output box RMB is provided, where the RMB includes: at least one downlink transmission unit, a first antenna, and a second antenna, where the downlink transmission unit includes: a first duplexer, a first power An amplification module, a first frequency converter, a first filter, and a second power amplification module;
其中,所述第一天线连接所述第一双工器的输入端,所述第一双工器的第一输出端连接所述第一功率放大器的输入端,所述第一功率放大模块的输出端连接所述第一变频器的第一输入端,所述第一变频器的输出端连接所述第一滤波器的输入端,所述第一滤波器的输出端连接所述第二功率放大模块的输入端,所述第二功率放大模块的输出端连接所述第二天线。The first antenna is connected to an input end of the first duplexer, and a first output end of the first duplexer is connected to an input end of the first power amplifier, where the first power amplification module is The output end is connected to the first input end of the first frequency converter, the output end of the first frequency converter is connected to the input end of the first filter, and the output end of the first filter is connected to the second power An input end of the amplification module, and an output end of the second power amplification module is connected to the second antenna.
结合第三方面,在第一种可能的实现方式中,所述下行传输单元还包括:第三功率放大模块、第一锁相环;With reference to the third aspect, in a first possible implementation, the downlink transmission unit further includes: a third power amplification module, a first phase locked loop;
其中,所述第一双工器的第二输出端连接所述第三功率放大模块的输入端,所述第一双工器的第二输出端用于输出接收到的参考时钟信号,所述第三功率放大模块的输出端连接所述锁相环的输入端,所述锁相环的输出端连接所述第一变频器的第二输入端。The second output end of the first duplexer is connected to the input end of the third power amplifying module, and the second output end of the first duplexer is configured to output the received reference clock signal, The output end of the third power amplifying module is connected to the input end of the phase locked loop, and the output end of the phase locked loop is connected to the second input end of the first frequency converter.
结合第三方面或第三方面的第一种可能的实现方式,在第二种可能的实现方式中,所述RMB还包括:至少一个上行传输单元,所述上行传输单元包括:第二滤波器、第四功率放大模块、第二变频器、第三滤波器、第五功率放大模块;
With the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation, the RMB further includes: at least one uplink transmission unit, where the uplink transmission unit includes: a second filter a fourth power amplification module, a second frequency converter, a third filter, and a fifth power amplification module;
其中,所述第一天线连接所述第二滤波器的输入端,所述第二滤波器的输出端连接所述第四功率放大模块的输入端,所述第四功率放大模块的输出端连接所述第二变频器的第一输入端,所述第二变频器的输出端连接所述第三滤波器的输入端,所述第三滤波器的输出端连接所述第五功率放大器的输入端,所述第五功率放大器的输出端连接所述第二天线。The first antenna is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the fourth power amplifying module, and the output end of the fourth power amplifying module is connected. a first input end of the second frequency converter, an output end of the second frequency converter is connected to an input end of the third filter, and an output end of the third filter is connected to an input of the fifth power amplifier The output of the fifth power amplifier is connected to the second antenna.
结合第三方面的第二种可能的实现方式,在第三种可能的实现方式中,所述上行传输单元还包括:第四滤波器、功分器和第二锁相环;With the second possible implementation of the third aspect, in a third possible implementation, the uplink transmission unit further includes: a fourth filter, a power splitter, and a second phase locked loop;
其中,所述第四滤波器的输入端用于输入参考时钟信号,所述第四滤波器的输出端连接所述功分器的输入端,所述功分器的输出端连接所述第二锁相环的输入端,所述第二锁相环的输出端连接所述第二变频器的第二输入端。The input end of the fourth filter is used to input a reference clock signal, the output end of the fourth filter is connected to the input end of the power splitter, and the output end of the power splitter is connected to the second An input end of the phase locked loop, and an output end of the second phase locked loop is connected to the second input end of the second frequency converter.
结合第三方面的第三种可能的实现方式,在第四种可能的实现方式中,In conjunction with the third possible implementation of the third aspect, in a fourth possible implementation,
所述第一功率放大模块、所述第三功率放大模块、所述第四功率放大模块为功率放大器;The first power amplification module, the third power amplification module, and the fourth power amplification module are power amplifiers;
所述第二功率放大模块和所述第五功率放大模块由增益可调功率放大器和一功率放大器串联组成。The second power amplification module and the fifth power amplification module are composed of a gain adjustable power amplifier and a power amplifier connected in series.
第四方面,提供一种室内多天线***,所述室内多天线***包括:基站、本地多输入多输出单元LMU、合路单元、馈线、与所述馈线连接的至少一条信号收发支路,以及至少一个远端输入多输出盒子RMB;其中,所述基站输出多个天线通道信号;According to a fourth aspect, an indoor multi-antenna system includes: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, and at least one signal transmitting and receiving branch connected to the feeder, and At least one remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;
所述基站用于将所述多个天线通道信号中的第一天线通道信号进行快速傅里叶反变换IFFT或离散傅里叶反变换IDFT得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据联合进行IFFT或IDFT,得到离散的其他天线通道信号;The base station is configured to perform an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform IDFT on the first antenna channel signal of the multiple antenna channel signals to obtain a discrete first antenna channel signal, and the first antenna channel Other antenna channel signals other than the signal are combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals;
所述LMU用于将所述离散的其他天线通道信号进行调制,得到调制后的其他天线通道信号;The LMU is configured to modulate the discrete other antenna channel signals to obtain modulated other antenna channel signals;
所述基站将调制后的第一天线通道信号进行缓存后传输至所述合路单元,所述LMU将调制后的其他天线通道信号传输至所述合路单元;
The base station buffers the modulated first antenna channel signal and transmits the signal to the combining unit, and the LMU transmits the modulated other antenna channel signal to the combining unit;
所述合路单元用于将所述离散的第一天线通道信号与所述调制后的其他天线通道信号进行合路,得到合路信号;所述合路单元通过所述馈线将所述合路信号发送至至少一条信号收发支路,并向用户设备和至少一个所述RMB发送所述合路信号;The combining unit is configured to combine the discrete first antenna channel signals with the modulated other antenna channel signals to obtain a combined signal; the combining unit passes the combined road through the feeder Transmitting a signal to the at least one signal transceiving branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;
所述RMB用于将接收到的所述合路信号中,所述调制后的其他天线通道信号中至少一个信号进行解调得到至少一个解调后的其他天线通道信号,再对所述解调后的其他天线通道信号进行FFT或DFT移除所述第一数据,得到至少一个其他天线通道信号的原始信号,再将所述至少一个其他天线通道信号的原始信号进行IFFT或IDFT,得到至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号,将所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号向所述用户设备发送;The RMB is configured to demodulate at least one of the modulated other antenna channel signals into the received combined signal to obtain at least one demodulated other antenna channel signal, and then perform the demodulation The other antenna channel signals are FFT or DFT to remove the first data, obtain the original signal of at least one other antenna channel signal, and then perform the IFFT or IDFT on the original signal of the at least one other antenna channel signal to obtain at least one a discrete other antenna channel signal that is the same as a frequency of the discrete first antenna channel signal, and the at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal Said user equipment to send;
所述用户设备用于接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述离散的第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号。The user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the discrete first antenna channel signal in the combined signal, and receive the at least one of the at least one of the RMB transmissions A discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal.
结合第四方面,在第一种可能的实现方式中,In combination with the fourth aspect, in a first possible implementation manner,
所述合路单元外接于所述LMU,其中,所述LMU的第一端与所述基站连接,所述LMU的第二端与所述合路单元的第一端连接,所述合路单元的第二端通过所述馈线与每条所述信号收发支路连接;The combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;
或者,所述合路单元内置于所述LMU中,所述LMU的第一端与所述基站连接,所述LMU的第二端与通过所述馈线与每条所述信号收发支路连接;Alternatively, the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;
所述LMU外接于所述基站,或者内置于所述基站中;The LMU is externally connected to the base station or built in the base station;
所述信号发射支路包括:耦合器、功分器、至少一根天线,所述耦合器的输入端与所述馈线连接、所述耦合器的输出端与所述功分器的输入端连接,所述功分器的输出端与每根所述天线连接。The signal transmitting branch includes: a coupler, a power splitter, at least one antenna, an input end of the coupler is connected to the feed line, and an output end of the coupler is connected to an input end of the power splitter The output of the power splitter is connected to each of the antennas.
第五方面,提供一种室外多天线***,所述室外多天线***包括:基站、本地模块、第一天线模块、第二天线模块、至少一个演进远端射频单元、至少一个演进远端模块;所述基站输出多个天线通道信号,以
至少两个天线通道信号为一组,且每一组天线通道信号中的信号数目相同;The fifth aspect provides an outdoor multi-antenna system, where the outdoor multi-antenna system includes: a base station, a local module, a first antenna module, a second antenna module, at least one evolved remote radio unit, and at least one evolved remote module; The base station outputs a plurality of antenna channel signals to
At least two antenna channel signals are in a group, and the number of signals in each group of antenna channel signals is the same;
所述基站通过所述第一天线模块向用户设备发送第一组天线通道信号;Transmitting, by the first antenna module, the first group of antenna channel signals to the user equipment by using the first antenna module;
所述本地模块用于将除所述第一组天线通道信号外的至少一组天线通道信号通过所述第二天线模块向所述至少一个演进远端射频单元发送;The local module is configured to send at least one group of antenna channel signals except the first group of antenna channel signals to the at least one evolved remote radio unit through the second antenna module;
若所述演进远端射频单元的下一级为另一演进远端射频单元,则所述演进远端射频单元用于将接收到的所述至少一组天线通道信号中的至少一组天线通道信号向所述另一演进远端射频单元发送;若所述演进远端射频单元的下一级为所述演进远端模块,则所述演进远端射频单元用于将接收到的所述至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向所述演进远端模块发送;If the next stage of the evolved remote radio unit is another evolved remote radio unit, the evolved remote radio unit is configured to receive at least one of the at least one set of antenna channel signals Transmitting the signal to the another evolved remote radio unit; if the next stage of the evolved remote radio unit is the evolved remote module, the evolved remote radio unit is configured to receive the at least Each of the antenna channel signals of the set of antenna channel signals is respectively frequency-converted at different frequency points to obtain at least one set of frequency-converted antenna channel signals, and sent to the evolved remote module;
所述演进远端模块用于将接收到的所述至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与所述第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向所述用户设备发送;The evolved remote module is configured to restore a frequency point corresponding to each of the at least one set of the converted antenna channel signals to each of the first group of antenna channel signals At least a set of recovered antenna channel signals are obtained from the frequency of the channel signal and sent to the user equipment;
所述用户设备用于接收所述第一天线模块发送的所述第一组天线通道信号,并接收所述无限远端模块发送的所述至少一组恢复后的天线通道信号。The user equipment is configured to receive the first group of antenna channel signals sent by the first antenna module, and receive the at least one set of restored antenna channel signals sent by the infinite remote module.
结合第五方面,在第一种可能的实现方式中,In combination with the fifth aspect, in the first possible implementation manner,
所述用户设备还用于向所述第一天线模块以及一个演进远端模块发送上行信号;The user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;
所述演进远端模块还用于将接收到的所述上行信号进行信号同步和模数转换处理,并将处理后的信号转为同相正交IQ数据信号,并将所述IQ数据信号向所述演进远端模块上级的演进远端射频单元发送;The evolved remote module is further configured to perform signal synchronization and analog-to-digital conversion processing on the received uplink signal, and convert the processed signal into an in-phase orthogonal IQ data signal, and forward the IQ data signal to the The evolved remote radio unit of the evolved remote module is sent by the evolved remote radio unit;
若所述演进远端射频单元的上级为所述第二天线模块,所述演进远端射频单元还用于将接收到的所述IQ数据信号向所述第二天线模块发送;若所述演进远端射频单元的上级为另一演进远端射频单元,所述演
进远端射频单元还用于将接收到的所述IQ数据信号向所述另一演进远端射频单元发送,直至发送至所述第二天线模块;If the upper stage of the evolved remote radio unit is the second antenna module, the evolved remote radio unit is further configured to send the received IQ data signal to the second antenna module; The upper stage of the remote radio unit is another evolved remote radio unit.
The remote radio unit is further configured to send the received IQ data signal to the another evolved remote radio unit until being sent to the second antenna module;
所述基站还用于接收所述第一天线模块接收到的所述上行信号,并接收所述本地模块通过所述第二天线模块接收到的所述IQ数据信号。The base station is further configured to receive the uplink signal received by the first antenna module, and receive the IQ data signal that is received by the local module by using the second antenna module.
结合第五方面,在第二种可能的实现方式中,In combination with the fifth aspect, in a second possible implementation manner,
所述用户设备还用于向所述第一天线模块以及一个演进远端模块发送上行信号;The user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;
所述演进远端模块还用于将所述上行信号进行变频,得到变频后的上行信号,并向所述演进远端模块上级的演进远端射频单元发送;The evolved remote module is further configured to perform frequency conversion on the uplink signal to obtain a frequency-converted uplink signal, and send the uplink signal to the evolved remote radio unit of the egress of the evolved remote module;
若所述演进远端射频单元的上级为所述第二天线模块,所述演进远端射频单元还用于将接收到的所述变频后的上行信号向所述第二天线模块发送;若所述演进远端射频单元的上级为另一演进远端射频单元,所述演进远端射频单元还用于将接收到的所述变频后的上行信号向所述另一演进远端射频单元发送,直至发送至所述第二天线模块;If the upper stage of the evolved remote radio unit is the second antenna module, the evolved remote radio unit is further configured to send the received uplink signal to the second antenna module; The evolved remote radio unit is further configured to send the received uplink signal to the another evolved remote radio unit. Until being sent to the second antenna module;
所述本地模块还用于将所述第二天线模块接收到的所述变频后的上行信号的频点恢复至与所述上行信号相同的频点,得到恢复后的上行信号,并向所述基站发送所述恢复后的上行信号;The local module is further configured to restore a frequency point of the frequency-converted uplink signal received by the second antenna module to a frequency point that is the same as the uplink signal, to obtain a recovered uplink signal, and to the Sending, by the base station, the recovered uplink signal;
所述基站还用于接收所述第一天线模块接收到的所述上行信号,并接收所述本地模块发送的所述恢复后的上行信号。The base station is further configured to receive the uplink signal received by the first antenna module, and receive the restored uplink signal sent by the local module.
结合第五方面至第五方面的第二种可能的实现方式中的任意一种,在第三种可能的实现方式,With reference to any one of the fifth aspect to the second possible implementation of the fifth aspect, in a third possible implementation manner,
第一演进远端模块还用于向第二演进远端模块传输信号,所述信号包括所述变频后的天线通道信号、所述IQ数据信号、所述变频后的上行信号中的任意一种;The first evolved remote module is further configured to transmit a signal to the second evolved remote module, where the signal includes any one of the converted antenna channel signal, the IQ data signal, and the frequency-converted uplink signal. ;
所述第一演进远端模块、所述第二演进远端模块为所述至少一个演进远端模块中的任意两个演进远端模块。The first evolved remote module and the second evolved remote module are any two evolved remote modules of the at least one evolved remote module.
第六方面,提供一种多天线实现方法,所述方法包括:In a sixth aspect, a multi-antenna implementation method is provided, the method comprising:
将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中所述变频后的其他天线通道信号中每个信号的频点不同;
Transforming other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals output by the base station to obtain other antenna channel signals after frequency conversion, wherein frequency of each signal in the other antenna channel signals after the frequency conversion Different
将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,得到合路信号;Combining the first antenna channel signal with the frequency-converted other antenna channel signals to obtain a combined signal;
向用户设备和至少一个远端输入多输出盒子RMB发送所述合路信号,以便接收到所述合路信号的所述RMB将接收到的所述合路信号中的所述变频后的其他天线通道信号中至少一个信号的频点恢复至与所述第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将所述至少一个恢复后的天线通道信号向所述用户设备发送,使得所述用户设备获取所述合路信号中的所述第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个恢复后的天线通道信号。Transmitting the combined signal to the user equipment and the at least one remote input multi-output box RMB, so that the other antenna of the combined signal in the combined signal that the RMB of the combined signal will receive is received Recovering a frequency point of at least one of the channel signals to the same frequency point as the first antenna channel signal, obtaining at least one recovered antenna channel signal, and transmitting the at least one restored antenna channel signal to the user The device sends, so that the user equipment acquires the first antenna channel signal in the combined signal, and receives at least one of the at least one restored antenna channel signal sent by the RMB.
结合第六方面,在第一种可能的实现方式中,所述方法还包括:With reference to the sixth aspect, in a first possible implementation, the method further includes:
接收所述用户设备发送的上行信号,以及接收至少一个RMB发送的变频后的上行信号;Receiving an uplink signal sent by the user equipment, and receiving an up-converted uplink signal sent by at least one RMB;
将所述变频后的上行信号的恢复至与所述上行信号相同的频点,得到恢复后的上行信号;Recovering the converted uplink signal to the same frequency point as the uplink signal, and obtaining the restored uplink signal;
向所述基站发送所述上行信号和所述恢复后的上行信号。Sending the uplink signal and the recovered uplink signal to the base station.
第七方面,提供一种多天线实现方法,所述方法包括:In a seventh aspect, a multi-antenna implementation method is provided, the method comprising:
将所述多个天线通道信号中的第一天线通道信号进行快速傅里叶反变换IFFT或离散傅里叶反变换IDFT得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据联合进行IFFT或IDFT,得到离散的其他天线通道信号;Performing an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform (IDFT) on the first antenna channel signal of the plurality of antenna channel signals to obtain a discrete first antenna channel signal, and using the antenna other than the first antenna channel signal The channel signal is combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals;
将所述离散的其他天线通道信号进行调制,得到调制后的其他天线通道信号;Modulating the discrete other antenna channel signals to obtain modulated other antenna channel signals;
将调制后的第一天线通道信号进行缓存后与所述调制后的其他天线通道信号进行合路,得到合路信号;The modulated first antenna channel signal is buffered and combined with the modulated other antenna channel signals to obtain a combined signal;
将所述合路信号向用户设备和至少一个所述RMB发送,以便接收到所述合路信号的所述RMB将接收到的所述合路信号中,所述调制后的其他天线通道信号中至少一个信号进行解调得到至少一个解调后的其他天线通道信号,再对所述解调后的其他天线通道信号进行FFT或DFT移除所述第一数据,得到至少一个其他天线通道信号的原始信号,再将所述至少一个其他天线通道信号的原始信号进行IFFT或IDFT,得到至少一个
与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号,将所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号向所述用户设备发送,使得所述用户设备接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述离散的第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号。Transmitting the combined signal to the user equipment and the at least one of the RMBs, so that the combined signal that the RMB that receives the combined signal will receive, in the modulated other antenna channel signals Demodulating at least one signal to obtain at least one demodulated other antenna channel signal, and performing FFT or DFT on the demodulated other antenna channel signal to remove the first data to obtain at least one other antenna channel signal. Original signal, and then performing IFFT or IDFT on the original signal of the at least one other antenna channel signal to obtain at least one
a discrete other antenna channel signal that is the same as a frequency of the discrete first antenna channel signal, and the at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal The user equipment sends, so that the user equipment receives the combined signal sent by a signal transceiver branch, acquires the discrete first antenna channel signal in the combined signal, and receives at least one of the RMB transmissions. The at least one other discrete antenna channel signal that is the same as the frequency of the discrete first antenna channel signal.
第八方面,提供另一种多天线实现方法,所述方法包括:In an eighth aspect, another multi-antenna implementation method is provided, the method comprising:
向用户设备发送第一组天线通道信号;Sending a first set of antenna channel signals to the user equipment;
将除所述第一组天线通道信号外的至少一组天线通道信号向所述至少一个演进远端射频单元发送;其中,每一组天线通道信号包括基站输出的多个天线通道信号中的至少两个天线通道信号,且每一组天线通道信号中的信号数目相同;Transmitting at least one set of antenna channel signals other than the first set of antenna channel signals to the at least one evolved remote radio frequency unit; wherein each set of antenna channel signals comprises at least one of a plurality of antenna channel signals output by the base station Two antenna channel signals, and the number of signals in each group of antenna channel signals is the same;
以便于所述至少一个演进远端射频单元接收到所述至少一组天线通道信号后,若所述演进远端射频单元的下一级为另一演进远端射频单元,则所述演进远端射频单元将接收到的所述至少一组天线通道信号中的至少一组天线通道信号向所述另一演进远端射频单元发送;若所述演进远端射频单元的下一级为所述演进远端模块,则所述演进远端射频单元将接收到的所述至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向所述演进远端模块发送,以便于所述演进远端模块将接收到的所述至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与所述第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向所述用户设备发送,使得用户设备用于接收所述第一组天线通道信号和所述至少一组恢复后的天线通道信号。After the at least one evolved remote radio unit receives the at least one antenna channel signal, if the next stage of the evolved remote radio unit is another evolved remote radio unit, the evolved far end The radio unit transmits at least one of the received at least one set of antenna channel signals to the another evolved remote radio unit; if the next stage of the evolved remote radio unit is the evolution The remote module, the evolved remote radio unit performs frequency conversion of each of the at least one set of the antenna channel signals of the at least one set of antenna channel signals to obtain at least one And converting the antenna channel signal to the evolved remote module, so as to receive the frequency of each of the at least one set of the converted antenna channel signals received by the evolved remote module Point corresponding to recovering to a frequency point of each antenna channel signal of the first group of antenna channel signals, obtaining at least one set of recovered antenna channel signals, and providing the user with the antenna channel signal Preparation transmission, so that the user equipment is configured to receive the first group of antenna channel signal and the antenna signal recovery channel at least one group.
结合第八方面,在第一种可能的实现方式中,所述方法还包括:With reference to the eighth aspect, in a first possible implementation, the method further includes:
接收用户设备发送的上行信号;Receiving an uplink signal sent by the user equipment;
接收至少一个演进远端射频单元发送的IQ数据信号;所述IQ数据信号是由所述演进远端模块对所述上行信号进行信号同步和模数转换处理,并将处理后的信号转换后得到,并发送至所述的演进远端射频单元
的。Receiving, by the at least one evolved remote radio unit, an IQ data signal, where the IQ data signal is subjected to signal synchronization and analog-to-digital conversion processing on the uplink signal by the evolved remote module, and converting the processed signal to obtain And sent to the evolved remote radio unit
of.
结合第八方面,在第二种可能的实现方式中,所述方法还包括:With reference to the eighth aspect, in a second possible implementation manner, the method further includes:
接收用户设备发送的上行信号;Receiving an uplink signal sent by the user equipment;
接收至少一个演进远端射频单元发送的变频后的上行信号;所述变频后的上行信号是由所述演进远端模块对所述上行信号进行变频后生成,并发送至所述的演进远端射频单元的;Receiving, by the at least one evolved remote radio unit, the frequency-converted uplink signal, where the converted uplink signal is generated by the evolved remote module, and sent to the evolved remote end Radio frequency unit
将接收到的所述变频后的上行信号的频点恢复至与所述上行信号相同的频点,得到恢复后的上行信号。The frequency point of the received up-converted uplink signal is restored to the same frequency point as the uplink signal, and the recovered uplink signal is obtained.
综上所述,本发明实施例提供一种多天线实现方法、装置及***,在室内多天线***中,通过LMU将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行不同频点的变频,再将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,将得到的合路信号同时发送给UE和RMB,其中RMB在将变频后的其他天线通道信号中的至少一个信号的频点恢复至原来频点后也发送至该UE,使得UE能够同时收到合路信号中的第一天线通道信号、至少一个信号的频点恢复的恢复信号;在室外多天线***中,通过第一天线模块将一组天线通道信号发送给UE,再通过第二天线模块将其他组天线通道信号传输给演进远端射频单元,演进远端射频单元将其他组天线通道信号进行变频后传输至演进远端模块,通过演进远端模块将变频后其他组天线通道信号进行再变频后恢复原来频点,并发送给UE,从而使得UE能够同时接收到多组天线通道信号。由此可见,能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the embodiments of the present invention provide a multi-antenna implementation method, apparatus, and system. In an indoor multi-antenna system, an antenna channel other than the first antenna channel signal is outputted by the LMU through multiple antenna channel signals output by the base station. The signal is frequency-converted at different frequency points, and then the first antenna channel signal is combined with the frequency-converted other antenna channel signals, and the obtained combined signal is simultaneously sent to the UE and the RMB, wherein the RMB is converted after the frequency conversion. The frequency point of at least one of the other antenna channel signals is restored to the original frequency point and is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal, and the frequency point recovery of the at least one signal. In the outdoor multi-antenna system, a group of antenna channel signals are sent to the UE through the first antenna module, and the other group antenna channel signals are transmitted to the evolved remote radio unit through the second antenna module, and the remote radio unit is evolved. The other antenna channel signals are frequency-converted and transmitted to the evolved remote module, and the other remote antenna channels are converted by the evolved remote module. After re-conversion to restore the original frequency, and sends the UE, so that the UE can simultaneously receive multiple sets of antenna channel signal. It can be seen that multi-antenna technology can be implemented without increasing antenna deployment, thereby improving system performance without increasing cost.
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.
图1为本发明实施例提供的室内多天线***的下行传输的示意图;
1 is a schematic diagram of downlink transmission of an indoor multi-antenna system according to an embodiment of the present invention;
图2为本发明实施例提供的室内多天线***的上行传输的示意图;2 is a schematic diagram of uplink transmission of an indoor multi-antenna system according to an embodiment of the present invention;
图3为本发明实施例提供的LMU的结构示意图;FIG. 3 is a schematic structural diagram of an LMU according to an embodiment of the present disclosure;
图4为本发明实施例提供的LMU的另一结构示意图;4 is another schematic structural diagram of an LMU according to an embodiment of the present invention;
图5为本发明实施例提供的RMB的结构示意图;FIG. 5 is a schematic structural diagram of an RMB according to an embodiment of the present disclosure;
图6为本发明实施例提供的RMB的另一结构示意图;FIG. 6 is another schematic structural diagram of an RMB according to an embodiment of the present disclosure;
图7为本发明实施例提供的室内多天线***的利用离散频谱传输的示意图;FIG. 7 is a schematic diagram of utilizing discrete spectrum transmission of an indoor multi-antenna system according to an embodiment of the present invention; FIG.
图8为本发明实施例提供的室外多天线***的下行传输的示意图;FIG. 8 is a schematic diagram of downlink transmission of an outdoor multi-antenna system according to an embodiment of the present invention; FIG.
图9为本发明实施例提供的室外多天线***的上行传输的示意图;FIG. 9 is a schematic diagram of uplink transmission of an outdoor multi-antenna system according to an embodiment of the present invention; FIG.
图10为本发明实施例提供的室外多天线***的上行传输的另一示意图;FIG. 10 is another schematic diagram of uplink transmission of an outdoor multi-antenna system according to an embodiment of the present disclosure;
图11为本发明实施例提供的一种多天线实现方法的流程示意图;FIG. 11 is a schematic flowchart diagram of a method for implementing multiple antennas according to an embodiment of the present invention;
图12为本发明实施例提供的一种多天线实现方法的下行传输的流程示意图;FIG. 12 is a schematic flowchart of downlink transmission of a multi-antenna implementation method according to an embodiment of the present disclosure;
图13为本发明实施例提供的一种多天线实现方法的上行传输的流程示意图;FIG. 13 is a schematic flowchart of uplink transmission of a multi-antenna implementation method according to an embodiment of the present disclosure;
图14为本发明实施例提供的另一种多天线实现方法的流程示意图;FIG. 14 is a schematic flowchart diagram of another multi-antenna implementation method according to an embodiment of the present invention;
图15为本发明实施例提供的又一种多天线实现方法的流程示意图;FIG. 15 is a schematic flowchart diagram of still another method for implementing multiple antennas according to an embodiment of the present invention;
图16为本发明实施例提供的又一种多天线实现方法的下行传输的流程示意图;FIG. 16 is a schematic flowchart of downlink transmission of another multi-antenna implementation method according to an embodiment of the present disclosure;
图17为本发明实施例提供的又一种多天线实现方法的上行传输的流程示意图;FIG. 17 is a schematic flowchart of uplink transmission of another multi-antenna implementation method according to an embodiment of the present disclosure;
图18为本发明实施例提供的又一种多天线实现方法的上行传输的流程示意图。FIG. 18 is a schematic flowchart of uplink transmission of another multi-antenna implementation method according to an embodiment of the present invention.
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造
性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. Based on the embodiments of the present invention, one of ordinary skill in the art does not create
All other embodiments obtained under the premise of sexual labor are within the scope of protection of the present invention.
本发明实施例提供一种室内多天线***,如图1所示,该室内多天线***包括:An embodiment of the present invention provides an indoor multi-antenna system. As shown in FIG. 1 , the indoor multi-antenna system includes:
基站、本地多输入多输出单元(Local MIMO Unit,以下简称:LMU)、合路单元、馈线、与馈线连接的至少一条信号收发支路,以及至少一个远端输入多输出盒子(Remote MIMO Box,以下简称:RMB)。上述室内多天线***中可以为位于该***信号范围内的多个用户设备(User Equipment,以下简称:UE)服务。a base station, a local MIMO unit (LMU), a combining unit, a feeder, at least one signal transmitting and receiving branch connected to the feeder, and at least one remote input MIMO box (Remote MIMO Box, Hereinafter referred to as: RMB). The indoor multi-antenna system can serve a plurality of user equipments (User Equipments, hereinafter referred to as UEs) located within the signal range of the system.
其中,对于下行传输,基站输出多个天线通道信号。Wherein, for downlink transmission, the base station outputs multiple antenna channel signals.
LMU用于将多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中变频后的其他天线通道信号中每个信号的频点不同。The LMU is configured to frequency-convert other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals to obtain other antenna channel signals after the frequency conversion, wherein each of the other antenna channel signals after the frequency conversion has different frequency points.
合路单元用于将第一天线通道信号与变频后的其他天线通道信号进行合路,得到合路信号;合路信号通过馈线传输至至少一条信号收发支路,并向用户设备和至少一个RMB发送合路信号。The combining unit is configured to combine the first antenna channel signal with the converted other antenna channel signals to obtain a combined signal; the combined signal is transmitted to the at least one signal transmitting and receiving branch through the feeder, and is to the user equipment and the at least one RMB Send a combined signal.
RMB用于将接收到的合路信号中,变频后的其他天线通道信号中至少一个信号的频点恢复至与第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将至少一个恢复后的天线通道信号向用户设备发送。The RMB is used to restore the frequency of at least one of the converted other antenna channel signals to the same frequency as the first antenna channel signal, to obtain at least one restored antenna channel signal, and Sending at least one recovered antenna channel signal to the user equipment.
UE用于接收一条信号收发支路发送的合路信号,获取合路信号中的第一天线通道信号,并接收至少一个RMB发送的至少一个恢复后的天线通道信号。The UE is configured to receive a combined signal sent by a signal transmitting and receiving branch, acquire a first antenna channel signal in the combined signal, and receive at least one restored antenna channel signal sent by at least one RMB.
示例性的,基站输出的多个天线通道信号分别为天线通道信号0~3,如图1所示,分别记为p0~p3。其中,p0~p3可以是LTE射频信号,并且可选的p0~p3中还可以包括基站提供的参考时钟信号、预设同步信号、操作维护信号中的至少一种。其中,参考时钟信号可以是频率为10MHz的信号或频率为122.88MHz的信号(当然,也可以是其他频率的信号),若采用时分双工***(Time Division Duplexing,以下简称TDD),预设同步信号可以为TDD收发切换的控制信号。操作维护信号包括设备开关信号(用于开关RMB)、增益控制信号、时延控制信号、相位调整信号中
的至少一种。Exemplarily, the plurality of antenna channel signals output by the base station are antenna channel signals 0 to 3, respectively, as shown in FIG. 1, and are respectively recorded as p0 to p3. The p0 to p3 may be an LTE radio frequency signal, and the optional p0 to p3 may further include at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal provided by the base station. The reference clock signal may be a signal with a frequency of 10 MHz or a signal with a frequency of 122.88 MHz (of course, it may also be a signal of other frequencies). If a Time Division Duplexing (TDD) is used, the preset synchronization is performed. The signal can be a control signal for TDD transceiving switching. Operation and maintenance signals include device switching signals (for switching RMB), gain control signals, delay control signals, and phase adjustment signals.
At least one of them.
对于基站提供的多个天线通道信号p0~p3,除了p0之外,LMU将p1~p3进行变频,变频后的频点可以为5.2GHz或3.5GHz,或者除了原频点之外的其他频率,其中变频后的p1~p3的频率不同,目的是为了使p0~p1通过同一馈线传输时,互相不产生干扰。For the multiple antenna channel signals p0 to p3 provided by the base station, in addition to p0, the LMU frequency-converts p1 to p3, and the frequency after the frequency conversion may be 5.2 GHz or 3.5 GHz, or other frequencies than the original frequency point. The frequency of p1 to p3 after frequency conversion is different, and the purpose is to prevent interference from each other when p0 to p1 are transmitted through the same feeder.
而后,合路单元将p0和变频后的p1~p3进行合路(合路是指将多路信号合为一路通过一个信道进行传输),合路单元可以为一个合路器或者双工器,具体的可以采用:Then, the combining unit combines p0 and the converted p1 to p3 (the combined way refers to combining the multiple signals into one channel for transmission), and the combining unit can be a combiner or a duplexer. Specific can be used:
例如LMU设置有另外一个内置合路器,该内置合路器可以先将p1~p3进行一次合路并输出,再通过前述合路单元和p0进行合路,得到合路信号;或者LMU直接将p1~p3输入至前述合路单元中进行合路,得到合路信号。For example, the LMU is provided with another built-in combiner. The built-in combiner can first combine and output p1~p3, and then combine the combined unit and p0 to obtain a combined signal; or the LMU directly P1 to p3 are input to the combining unit and combined to obtain a combined signal.
上述合路信号至少包括p0和变频后的p1~p3,可选的当基站还提供的参考时钟信号、预设同步信号、操作维护信号中的至少一种时,该合路信号也还包括参考时钟信号、预设同步信号、操作维护信号中的至少一种。The combination signal includes at least p0 and the converted p1 to p3. Optionally, when the base station further provides at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal, the combination signal further includes a reference. At least one of a clock signal, a preset synchronization signal, and an operation and maintenance signal.
可选的,上述合路单元可以内置在LMU中,也可以外接在LMU外,而LMU可以内置在基站中,也可以外接在基站外部,其中基站可以是eNB,包括RRU和BBU。图1中LMU外接于基站,合路单元外接于LMU,其他可能的实现方式图中未示出。Optionally, the combining unit may be built in the LMU or externally connected to the LMU, and the LMU may be built in the base station or externally connected to the base station, where the base station may be an eNB, including an RRU and a BBU. In Figure 1, the LMU is external to the base station, and the combining unit is external to the LMU. Other possible implementations are not shown.
合路单元获取合路信号后通过馈线将合路单元发送至各个信号收发支路,信号收发支路的结构可以如图1所示(图1所示的信号收发支路1~3),包括:耦合器、功分器、至少一根天线,耦合器的输入端与馈线连接、耦合器的输出端与功分器的输入端连接,功分器的输出端与每根天线连接(图1所示的功分器连接的天线数为两根或者三根)。After the combined unit obtains the combined signal, the combined unit sends the combined unit to each signal transmitting and receiving branch through the feeding line. The structure of the signal transmitting and receiving branch can be as shown in FIG. 1 (signal transmitting and receiving branches 1 to 3 shown in FIG. 1), including : coupler, splitter, at least one antenna, the input end of the coupler is connected to the feeder, the output of the coupler is connected to the input of the splitter, and the output of the splitter is connected to each antenna (Fig. 1 The number of antennas connected to the power splitter shown is two or three).
其中,每条信号收发支路一般位于不同的区域,比如在大楼中,每一层设置一条上述信号收发支路。合路信号通过馈线上连接的耦合器分配功率后,将合路信号传输至每个信号收发支路上的功分器,功分器为每根天线进一步分配发射功率(一般为等分功率),最后将合路信号通过向外辐射的方式发送出去。
Each of the signal transmission and reception branches is generally located in a different area, such as in a building, and each of the layers is provided with one of the above signal transmission and reception branches. After the combined signal is distributed by the coupler connected to the feeder, the combined signal is transmitted to the splitter on each signal receiving and dispatching branch, and the splitter further distributes the transmit power (generally equal power) for each antenna. Finally, the combined signal is sent out by radiating outward.
在信号收发支路发出的信号覆盖内的RMB和UE就能够接收到该合路信号,UE收到该合路信号后,由于合路信号中p1~p3经过变频,所以UE只能识别出合路信号中的p0。The RMB and the UE in the signal coverage sent by the signal transmitting and receiving branch can receive the combined signal. After receiving the combined signal, the UE can only recognize the combined path because p1 to p3 are converted in the combined signal. P0 in the signal.
同时,RMB收到该合路信号后,将合路信号中p1~p3中至少一路再经过变频,使将p1~p3中的至少一路信号的频点恢复至与p0相同的频点,即将p1~p3至少一路信号恢复至原频点。图1中所示的每个RMB恢复p1~p3中的一路信号,其中图中由上至下信号收发支路1覆盖下的RMB1恢复的是p1的频点,信号收发支路2覆盖下的RMB2恢复的也是p1的频点,信号收发支路3覆盖下的三个RMB1~3分别恢复的是p1、p2、p3的频点,当然上述仅仅为示例,具体每个RMB能够恢复几路信号可以通过配置RMB实现。At the same time, after the RMB receives the combined signal, at least one of p1 to p3 in the combined signal is further frequency-converted, so that the frequency of at least one of the signals p1 to p3 is restored to the same frequency as p0, that is, p1 ~p3 At least one signal is restored to the original frequency. Each of the RMBs shown in FIG. 1 recovers one of the signals p1 to p3, wherein the RAM1 covered by the top-to-bottom signal transmission and reception branch 1 recovers the frequency of p1, and the signal transmission and reception branch 2 covers the The recovery of RMB2 is also the frequency of p1. The three RMB1~3 covered by the signal transmission and reception branch 3 recover the frequency points of p1, p2 and p3 respectively. Of course, the above is only an example, and each of the RMB can recover several signals. Can be achieved by configuring RMB.
而后,RMB将恢复后的至少一路信号向UE发送,此时UE既可以收到p0,又可以收到RMB发送的p1~p3中的至少一路信号,如图1所示,信号收发支路1覆盖下的UE1同时收到了p0和p1,信号收发支路2覆盖下的UE2同时收到了p0和p1,信号收发支路3覆盖下的UE3同时收到了p0~p3。由此可见,通过无线传输的方式,在室内***的下行传输实现了MIMO,提高了***性能。Then, the RMB transmits the recovered at least one signal to the UE. At this time, the UE can receive both p0 and at least one of p1 to p3 sent by the RMB. As shown in FIG. 1, the signal transmission and reception branch 1 The UE1 under the coverage receives p0 and p1 at the same time, and the UE2 covered by the signal transmission and reception branch 2 receives p0 and p1 at the same time, and the UE3 covered by the signal transmission and reception branch 3 simultaneously receives p0 to p3. It can be seen that through the wireless transmission mode, MIMO is realized in the downlink transmission of the indoor system, and the system performance is improved.
RMB的部署可以根据需要而定,一般可以在UE较多的区域部署,从而就能在该区域实现MIMO。因此,能够根据不同区域的性能要求进行动态部署。The deployment of RMB can be determined according to needs, and can generally be deployed in an area with more UEs, so that MIMO can be implemented in the area. Therefore, dynamic deployment can be performed according to the performance requirements of different regions.
其次,对于上行传输,可以包括:Second, for uplink transmission, it may include:
UE用于向一条信号收发支路和至少一个RMB发送上行信号;The UE is configured to send an uplink signal to a signal transceiver branch and at least one RMB;
RMB用于接收上行信号,并对接收到的上行信号进行变频,得到变频后的上行信号,并向一条信号收发支路发送变频后的上行信号;RMB is used for receiving the uplink signal, and frequency-converting the received uplink signal to obtain an up-converted uplink signal, and transmitting the frequency-converted uplink signal to a signal transmitting and receiving branch;
一条信号收发支路用于接收上行信号以及变频后的上行信号,并将上行信号和变频后的上行信号作为一路信号通过馈线传输至LMU;A signal transmitting and receiving branch is used for receiving the uplink signal and the converted uplink signal, and transmitting the uplink signal and the converted uplink signal as one signal to the LMU through the feeder;
LMU用于将变频后的上行信号的恢复至与上行信号相同的频点,得到恢复后的上行信号,并将上行信号和恢复后的上行信号传输至基站。The LMU is configured to restore the up-converted uplink signal to the same frequency as the uplink signal, obtain the recovered uplink signal, and transmit the uplink signal and the recovered uplink signal to the base station.
示例性的,如图2所示,UE1向外发出一路上行信号,记为p,信号范围覆盖该UE1的信号收发支路1,以及位于信号收发支路1的信号范围
内RMB1都能够收到该上行信号。Exemplarily, as shown in FIG. 2, UE1 sends out an uplink signal, denoted as p, the signal range covers the signal transmission and reception branch 1 of the UE1, and the signal range of the signal transmission and reception branch 1.
The internal RMB1 can receive the uplink signal.
RMB1在收到p后,对p进行变频,变频后的频点可以为5.2GHz或3.5GHz,或者除了原频点之外的其他频率,得到变频后的上行信号p’,并将p’向外发送。其中,该p’中还可以包括参考时钟信号,该参考时钟信号与下行传输时UE1从基站获取的河路信号中的参考时钟信号相同。After receiving p, RMB1 converts p, and the frequency after the frequency conversion can be 5.2GHz or 3.5GHz, or the frequency other than the original frequency point, the frequency signal p' after the frequency conversion is obtained, and p' Send outside. The reference clock signal may also be the same as the reference clock signal in the river channel acquired by the UE1 from the base station during downlink transmission.
信号收发支路1获取变频后的上行信号p’后,将p’和接收到的作为一路信号发送至LMU。After the signal transmission/reception branch 1 acquires the frequency-converted uplink signal p', it transmits p' and the received one-way signal to the LMU.
LMU在获取这一路信号后,将这一路信号中的p发送至基站,将p’再次进行变频,得到p”,使得p”的频点与p相同(可以理解为p”就是将p’还原回p),再将p”至基站。从而基站就能够接收到上行信号p和p”。由此可见,通过无线传输的方式,在室内***的上行传输也实现了MIMO,提高了***性能。After acquiring the signal, the LMU sends the p in the signal to the base station, and p' is again frequency-converted to obtain p", so that the frequency of p" is the same as p (which can be understood as p" is to restore p' Go back to p) and then p" to the base station. Therefore, the base station can receive the uplink signals p and p". It can be seen that, by means of wireless transmission, MIMO is also implemented in the uplink transmission of the indoor system, thereby improving system performance.
另外,本发明实施例提供的LMU结构可以如图3所示,包括:In addition, the LMU structure provided by the embodiment of the present invention may be as shown in FIG. 3, and includes:
至少一个下行传输单元1,下行传输单元包括:第一变频器101、第一滤波器102、第一功率放大模块103和第一双工器104;At least one downlink transmission unit 1, the downlink transmission unit includes: a first frequency converter 101, a first filter 102, a first power amplification module 103, and a first duplexer 104;
其中,基站的任一天线通道的信号从第一变频器101的第一输入端输入,第一变频器101的输出端与第一滤波器103的输入端连接,第一滤波器102的输出端与第一功率放大模块103的输入端连接,第一功率放大模块103的输出端与第一双工器104的输入端连接,第一双工器104的输出端连接室内多天线***中的馈线。The signal of any antenna channel of the base station is input from the first input end of the first frequency converter 101, and the output end of the first frequency converter 101 is connected to the input end of the first filter 103, and the output end of the first filter 102 Connected to the input end of the first power amplifying module 103, the output end of the first power amplifying module 103 is connected to the input end of the first duplexer 104, and the output end of the first duplexer 104 is connected to the feeder in the indoor multi-antenna system. .
其中,一个下行传输单元1可以对一个天线通道信号进行变频,因此通过配置,当LMU设置多个下行传输单元1时,就能够同时对多个天线通道信号进行变频。The downlink transmission unit 1 can perform frequency conversion on one antenna channel signal. Therefore, when the LMU sets multiple downlink transmission units 1, the multiple antenna channel signals can be simultaneously converted.
可选的,下行传输单元1还可以包括:第二滤波器105、功分器106、第二功率放大模块107和第一锁相环108;Optionally, the downlink transmission unit 1 may further include: a second filter 105, a power divider 106, a second power amplification module 107, and a first phase locked loop 108;
其中,第二滤波器105的输入端用于输入参考时钟信号,第二滤波器105的输出端连接功分器106的输入端,功分器106的第一输出端连接第一锁相环的108输入端,第一锁相环108的输出端连接第一变频器101的第二输入端,功分器106的第二输出端连接第二功率放大模块107的输入
端,第二功率放大模块107的输出端连接的第一双工器104;The input end of the second filter 105 is used to input the reference clock signal, the output end of the second filter 105 is connected to the input end of the power splitter 106, and the first output end of the power splitter 106 is connected to the first phase-locked loop. 108 input end, the output end of the first phase locked loop 108 is connected to the second input end of the first frequency converter 101, and the second output end of the power splitter 106 is connected to the input of the second power amplifying module 107
The first duplexer 104 connected to the output of the second power amplifying module 107;
前述预设同步信号和操作维护信号连接第一双工器104。The aforementioned preset synchronization signal and operation and maintenance signal are connected to the first duplexer 104.
其中,上述第一功率放大模块可以由一个增益可调的功率放大器和一个功率放大器(增益较大的)组成,第二功率放大模块也可以是一个功率放大器。The first power amplifying module may be composed of a gain adjustable power amplifier and a power amplifier (large gain), and the second power amplifying module may also be a power amplifier.
可选的,如图4所示,LMU中还可以包括至少一个上行传输单元2,上行传输单元2包括:第二双工器201、第三功率放大模块202、第四功率放大模块203、第二变频器204、第三滤波器205、第五功率放大模块206;Optionally, as shown in FIG. 4, the LMU may further include at least one uplink transmission unit 2, where the uplink transmission unit 2 includes: a second duplexer 201, a third power amplification module 202, and a fourth power amplification module 203. Two frequency converter 204, third filter 205, fifth power amplification module 206;
其中,第二双工器201的输入端连接室内多天线***中的馈线,第二双工器201的第一输出端连接第三功率放大模块202的输入端,第三功率放大模块202的输出端连接室内多天线***中的基站;第二双工器201的第二输出端连接第四功率放大模块203的输入端,第四功率放大模块203的输出端连接第二变频器204的第一输入端,第二变频器204的输出端连接第三滤波器205的输入端,第三滤波器205的输出端连接第五功率放大模块206的输出端,第五功率放大模块206的输出端连接基站。The input end of the second duplexer 201 is connected to the feeder in the indoor multi-antenna system, and the first output end of the second duplexer 201 is connected to the input end of the third power amplifying module 202, and the output of the third power amplifying module 202 is output. The second output end of the second duplexer 201 is connected to the input end of the fourth power amplifying module 203, and the output end of the fourth power amplifying module 203 is connected to the first end of the second frequency converter 204. The input end of the second frequency converter 204 is connected to the input end of the third filter 205, the output end of the third filter 205 is connected to the output end of the fifth power amplifying module 206, and the output end of the fifth power amplifying module 206 is connected. Base station.
可选的,上行传输单元2还包括:第六功率放大模块207和第二锁相环208;Optionally, the uplink transmission unit 2 further includes: a sixth power amplification module 207 and a second phase locked loop 208;
其中,第六功率放大器207的输入端用于输入参考时钟信号,第六功率放大器207的输出端连接第二锁相环208的输入端,第二锁相环208的输出端连接第二变频器204的第二输入端。The input end of the sixth power amplifier 207 is used to input the reference clock signal, the output end of the sixth power amplifier 207 is connected to the input end of the second phase locked loop 208, and the output end of the second phase locked loop 208 is connected to the second frequency converter. The second input of 204.
其中,上述第三、四、五、六功率放大模块可以为功率放大器。The third, fourth, fifth, and sixth power amplification modules may be power amplifiers.
本发明实施例提供的RMB结构可以如图5所示,包括:至少一个下行传输单元3、第一天线00和第二天线01,下行传输单元3包括:第一双工器301、第一功率放大模块302、第一变频器303、第一滤波器304、第二功率放大模块305;As shown in FIG. 5, the structure of the RMB provided by the embodiment of the present invention includes: at least one downlink transmission unit 3, a first antenna 00, and a second antenna 01. The downlink transmission unit 3 includes: a first duplexer 301, and a first power. The amplification module 302, the first frequency converter 303, the first filter 304, and the second power amplification module 305;
其中,第一天线00连接第一双工器301的输入端,第一双工器301的第一输出端连接第一功率放大器302的输入端,第一功率放大模块302的输出端连接第一变频器303的第一输入端,第一变频器303的输出端连接第一滤波器304的输入端,第一滤波器304的输出端连接第二功率放大
模块305的输入端,第二功率放大模块305的输出端连接第二天线01。The first antenna 00 is connected to the input end of the first duplexer 301, the first output end of the first duplexer 301 is connected to the input end of the first power amplifier 302, and the output end of the first power amplifying module 302 is connected to the first end. The first input end of the frequency converter 303, the output end of the first frequency converter 303 is connected to the input end of the first filter 304, and the output end of the first filter 304 is connected to the second power amplification.
At the input of the module 305, the output of the second power amplifying module 305 is connected to the second antenna 01.
其中,一个下行传输单元3可以对一个天线通道信号进行变频恢复,因此通过配置,当RMB设置多个下行传输单元3时,就能够同时对多个天线通道信号进行变频恢复。The downlink transmission unit 3 can perform frequency conversion recovery on one antenna channel signal. Therefore, when the plurality of downlink transmission units 3 are set by the RMB, the multiple antenna channel signals can be simultaneously restored by frequency conversion.
可选的,下行传输单元3还可以包括:第三功率放大模块306、第一锁相环307;Optionally, the downlink transmission unit 3 may further include: a third power amplification module 306, a first phase locked loop 307;
其中,第一双工器301的第二输出端连接第三功率放大模块306的输入端,第一双工器301的第二输出端用于输出接收到的参考时钟信号,第三功率放大模块306的输出端连接第一锁相环307的输入端,第一锁相环307的输出端连接第一变频器303的第二输入端。The second output end of the first duplexer 301 is connected to the input end of the third power amplifying module 306, and the second output end of the first duplexer 301 is used to output the received reference clock signal, and the third power amplifying module The output end of the first phase-locked loop 307 is connected to the input end of the first phase-locked loop 307, and the output end of the first phase-locked loop 307 is connected to the second input end of the first frequency converter 303.
其中,第一功率放大模块、第三功率放大模块可以为一功率放大器,第二功率放大模块由增益可调功率放大器和一功率放大器串联组成。The first power amplification module and the third power amplification module may be a power amplifier, and the second power amplification module is composed of a gain adjustable power amplifier and a power amplifier connected in series.
可选的,如图6所示,RMB还可以包括:Optionally, as shown in FIG. 6, the RMB may further include:
至少一个上行传输单元4,上行传输单元4包括:第二滤波器401、第四功率放大模块402、第二变频器403、第三滤波器404、第五功率放大模块405;The at least one uplink transmission unit 4, the uplink transmission unit 4 includes: a second filter 401, a fourth power amplification module 402, a second frequency converter 403, a third filter 404, and a fifth power amplification module 405;
其中,第一天线00连接第二滤波器401的输入端,第二滤波器401的输出端连接第四功率放大模块402的输入端,第四功率放大模块402的输出端连接第二变频器403的第一输入端,第二变频器403的输出端连接第三滤波器404的输入端,第三滤波器404的输出端连接第五功率放大器405的输入端,第五功率放大器405的输出端连接第二天线01。The first antenna 00 is connected to the input end of the second filter 401, the output end of the second filter 401 is connected to the input end of the fourth power amplifying module 402, and the output end of the fourth power amplifying module 402 is connected to the second inverter 403. The first input end, the output end of the second frequency converter 403 is connected to the input end of the third filter 404, the output end of the third filter 404 is connected to the input end of the fifth power amplifier 405, and the output end of the fifth power amplifier 405 The second antenna 01 is connected.
可选的,上行传输单元4还包括:第四滤波器406、功分器407和第二锁相环408;Optionally, the uplink transmission unit 4 further includes: a fourth filter 406, a power divider 407, and a second phase locked loop 408;
其中,第四滤波器406的输入端用于输入参考时钟信号,第四滤波器406的输出端连接功分器407的输入端,功分器407的输出端连接第二锁相环408的输入端,第二锁相环408的输出端连接第二变频器403的第二输入端。The input end of the fourth filter 406 is used to input the reference clock signal, the output end of the fourth filter 406 is connected to the input end of the splitter 407, and the output end of the splitter 407 is connected to the input of the second phase locked loop 408. The output end of the second phase locked loop 408 is connected to the second input end of the second frequency converter 403.
其中,第四功率放大模块为一功率放大器,例如可以为一低噪声功率放大器,第五功率放大模块为功率放大器可以由增益可调功率放大器
和一功率放大器串联组成。The fourth power amplifying module is a power amplifier, for example, may be a low noise power amplifier, and the fifth power amplifying module is a power amplifier, which may be a gain adjustable power amplifier.
It is composed in series with a power amplifier.
可选的,RMB可以根据上述操作维护信号对该RMB的下行链路的传输特性参数进行调整,下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。Optionally, the RMB may adjust the downlink transmission characteristic parameter of the RMB according to the foregoing operation and maintenance signal, where the transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
可选的,RMB还可以根据接收到的合路信号,或者根据UE发送的上行信号(比如根据上行信号的信号强度、时延等参数),对该RMB的下行链路的传输特性参数进行调整。下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。Optionally, the RMB may further adjust the downlink transmission characteristic parameter of the RMB according to the received combined signal or according to an uplink signal sent by the UE (for example, according to a signal strength, a delay, and the like of the uplink signal). . The transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
可选的,基站还可以根据用户设备发送的上行信号的,或用户设备发送的信道状态指示,对RMB的下行链路的传输特性参数进行调整,下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。Optionally, the base station may further adjust the downlink transmission characteristic parameter of the RMB according to the uplink signal sent by the user equipment or the channel status indication sent by the user equipment, where the transmission characteristic parameter of the downlink includes the amplification gain and the time. At least one of a delay parameter and a phase parameter.
示例性的,上述对放大增益的调整可以通过配置增益可调的功率放大器实现,或者通过配置数控可调衰减器(图中未示出);对时延和相位的调整可以通过配置数控延迟线、移相器、通过缓存延迟发送等方法实现(图中未示出)。Exemplarily, the above adjustment of the amplification gain can be implemented by configuring a power amplifier with adjustable gain, or by configuring a numerically controlled adjustable attenuator (not shown); adjusting the delay and phase can be configured by configuring a numerically controlled delay line. The phase shifter is implemented by a method such as buffer delay transmission (not shown in the figure).
可选的,在初始化时,基站还可以根据RMB的下行链路的初始传输特性参数对基站的多条天线通道所传输的信号的参数进行调整,使得多条天线通道所传输的天线通道信号的参数的误差在预设范围内;Optionally, during initialization, the base station may further adjust parameters of the signals transmitted by the multiple antenna channels of the base station according to the initial transmission characteristic parameter of the downlink of the RMB, so that the antenna channel signals transmitted by the multiple antenna channels are The error of the parameter is within the preset range;
其中,下行链路的初始传输特性参数包括:放大增益、时延参数、相位参数中的至少一种;The initial transmission characteristic parameter of the downlink includes: at least one of an amplification gain, a delay parameter, and a phase parameter;
天线通道信号的参数包括时延、幅度、相位中的至少一种。The parameters of the antenna channel signal include at least one of delay, amplitude, and phase.
可选的,UE还可以根据用户设备能够接收到的所有天线通道信号获取测量结果,并将测量结果发送至基站。其中,测量结果包括但不限于能够接收到的各个天线通道信号的信噪比。Optionally, the UE may also obtain measurement results according to all antenna channel signals that the user equipment can receive, and send the measurement result to the base station. The measurement results include, but are not limited to, a signal to noise ratio of each antenna channel signal that can be received.
基站可以根据测量结果、规定时间内用户设备已调度的数据以及用户设备当前的数据传输速率,采用比例公平准则为用户设备调度时频资源。The base station may use the proportional fairness criterion to schedule time-frequency resources for the user equipment according to the measurement result, the data scheduled by the user equipment, and the current data transmission rate of the user equipment.
另外,可选的,上述将天线通道信号变频后的信号为连续频谱信号,除此之外也可以是离散频谱信号,则如图7所示,可以在上述室内多
天线***中的基站中(可以设置在BBU中)设置至少一个快速傅里叶反变换(Inverse Fast Fourier Transform,简称IFFT)模块,或离散傅里叶反变换(Inverse Discrete Fourier Transform,简称IDFT)模块和缓存(可设置在BBU和/或RRU中),对于每一路信号都对应设置了发射通道模块;在RMB中设置解调模块、快速傅里叶变换(Fast Fourier Transform,简称FFT)模块或者离散傅里叶变换(Discrete Fourier Transform,DFT)模块、IFFT模块或IDFT模块、发射通道模块,处理方法包括:In addition, optionally, the signal converted by the antenna channel signal is a continuous spectrum signal, and may be a discrete spectrum signal, as shown in FIG.
At least one Inverse Fast Fourier Transform (IFFT) module or an Inverse Discrete Fourier Transform (IDFT) module is set in the base station in the antenna system (which can be set in the BBU). And buffer (can be set in the BBU and / or RRU), the transmit channel module is correspondingly set for each signal; the demodulation module, the Fast Fourier Transform (FFT) module or the discrete is set in the RMB A Fourier Transform (DFT) module, an IFFT module or an IDFT module, and a transmission channel module, and the processing methods include:
首先,BBU中的IFFT模块将基站输出的多个天线通道信号中第一天线通道信号进行IFFT或IDFT得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据(例如,可以为数据“0”)联合进行IFFT或IDFT,得到离散的其他天线通道信号;First, the IFFT module in the BBU performs IFFT or IDFT on the first antenna channel signal of the plurality of antenna channel signals output by the base station to obtain a discrete first antenna channel signal, and the first antenna channel signal and other antenna channel signals are first. Data (for example, data "0" can be combined for IFFT or IDFT) to obtain discrete other antenna channel signals;
其次,LMU将所述离散的其他天线通道信号进行调制(可以调制为3.5GHz或其他可能的频率),得到调制后的其他天线通道信号;Second, the LMU modulates the discrete other antenna channel signals (which can be modulated to 3.5 GHz or other possible frequencies) to obtain modulated other antenna channel signals;
同时,将调制后的第一天线通道信号输入缓存,在经过缓存输入发射通道模块(此处将调制后的第一天线通道信号输入缓存是为了使得发给UE信号,与RMB发给UE的信号在时间上同步),并将调制后的其他天线通道信号也通过发射通道模块传输至合路单元,合路单元将所述第一天线通道信号与所述调制后的其他天线通道信号进行合路,得到合路信号;At the same time, the modulated first antenna channel signal is input into the buffer, and is buffered into the transmission channel module (where the modulated first antenna channel signal input buffer is used to enable the signal to be sent to the UE and the signal sent to the UE by the RMB) Synchronizing in time), and transmitting the modulated other antenna channel signals to the combining unit through the transmitting channel module, the combining unit combining the first antenna channel signal with the modulated other antenna channel signals , get the combined signal;
合路单元通过馈线将合路信号发送至各个信号收发支路,用于向用户设备和至少一个RMB发送所述合路信号;The combining unit sends the combined signal to the respective signal transmitting and receiving branches through the feeder, and is configured to send the combined signal to the user equipment and the at least one RMB;
接收到所述合路信号的所述RMB将接收到的所述合路信号中的所述调制后的其他天线通道信号中至少一个信号通过同步模块进行解调得到至少一个解调后的其他天线通道信号,再通过FFT模块或DFT模块对解调后的其他天线通道信号进行FFT或DFT处理,得到至少一个其他天线通道信号的原始信号,最后,通过IFFT模块或IDFT模块将得到的其他天线通道信号的原始信号进行IFFT或IDFT处理,得到与离散的第一天线通道信号的频点相同的离散的其他天线通道信号(值得注意的是,由于前述离散的其他天线通道信号是和第一数据联合做IFFT或IDFT的到的,因此与这里得到的离散的其他天线通道信号是不同的)。
Receiving, by the RMB, the combined signal, at least one of the modulated other antenna channel signals in the combined signal is demodulated by a synchronization module to obtain at least one demodulated other antenna The channel signal is subjected to FFT or DFT processing on the demodulated other antenna channel signals by the FFT module or the DFT module to obtain an original signal of at least one other antenna channel signal, and finally, other antenna channels obtained by the IFFT module or the IDFT module are obtained. The original signal of the signal is subjected to IFFT or IDFT processing to obtain discrete other antenna channel signals having the same frequency as the discrete first antenna channel signal (notably, since the aforementioned discrete other antenna channel signals are combined with the first data Do IFFT or IDFT, so it is different from the discrete other antenna channel signals obtained here).
而后,RMB将得到的离散的其他天线通道信号向UE发送。Then, the RMB transmits the obtained discrete antenna channel signals to the UE.
这样,UE就同时接收到了离散的第一天线通道信号和离散的其他天线通道信号,由于离散的第一天线通道信号在发送前通过缓存的处理,所以UE离散的第一天线通道信号和离散的其他天线通道信号在时间上是同步的。In this way, the UE simultaneously receives the discrete first antenna channel signal and the discrete other antenna channel signals. Since the discrete first antenna channel signal is processed by the buffer before transmission, the UE discrete first antenna channel signal and discrete Other antenna channel signals are synchronized in time.
示例性的,如图7所示,假设基站(可以为eNB)输出的多个天线通道信号分别为天线通道信号0~3,分别记为p0~p3,在基站的BBU中对应p0~p3设置有4个IFFT模块,为IFFT模块0~3,其中在BBU和RRU中为p0设置缓存,在RRU中对应p0~p3设置有4个发射通道,为发射通道0~3,LMU可以外接于基站也可以内置于基站,此处以内置于基站为例(图7所示,内置于RRU中)。另外,上述IFFT模块可以用IDFT模块替换,FFT模块可以用DFT模块替换.Exemplarily, as shown in FIG. 7, it is assumed that a plurality of antenna channel signals output by a base station (which may be an eNB) are antenna channel signals 0 to 3, respectively, which are denoted as p0 to p3, and corresponding to p0 to p3 in the BBU of the base station. There are 4 IFFT modules, which are IFFT modules 0 to 3. In the BBU and RRU, buffers are set for p0. In the RRU, there are 4 transmission channels corresponding to p0 to p3, which are transmission channels 0 to 3. The LMU can be externally connected to the base station. It can also be built in the base station. Here, the built-in base station is taken as an example (shown in FIG. 7 and built in the RRU). In addition, the above IFFT module can be replaced with an IDFT module, and the FFT module can be replaced with a DFT module.
将p0进行通过IFFT模块0进行IFFT处理,得到离散频谱信号p0’。The p0 is subjected to IFFT processing by the IFFT module 0 to obtain a discrete spectrum signal p0'.
将p1~p3和数据“0”分别通过IFFT模块1~3进行IFFT处理,得到离散频谱信号p1”~p3”。P1 to p3 and data "0" are subjected to IFFT processing by IFFT modules 1 to 3, respectively, to obtain discrete spectrum signals p1" to p3".
将p0’输入到BBU的缓存中,经过RRU的缓存输入到发射通道0。P0' is input to the buffer of the BBU, and is input to the transmission channel 0 through the buffer of the RRU.
将p1”~p3”分别输入到发射通道1~3。P1" to p3" are input to the transmission channels 1 to 3, respectively.
各个输入通道分别将上述p0’、p1”~p3”通过合路单元(可以为双工器)进行合路,得到合路信号,并将该合路信号通过馈线传输至信号收发支路发送出去。Each of the input channels respectively combines the above p0', p1"~p3" through a combining unit (which may be a duplexer) to obtain a combined signal, and transmits the combined signal to the signal transmitting and receiving branch through the feeding line. .
RMB接收到合路信号后,将合路信号中的p1”~p3”中的至少一路进行处理,其中如要同时处理p1”~p3”中的两路以上信号,需要RMB具有至少两组以上的下列模块:解调模块、FFT模块、IFFT模块、发射通道模块。这里假设RMB只处理p1”,则:After receiving the combined signal, the RMB processes at least one of p1"~p3" in the combined signal. If two or more signals in p1"~p3" are to be processed simultaneously, it is necessary to have at least two sets of RMB. The following modules: demodulation module, FFT module, IFFT module, transmission channel module. This assumes that RMB only processes p1", then:
RMB通过解调模块将p1”进行解调,得到解调后的p1”’,而后通过FFT模块将p1”’进行FFT,移除数据“0”,得到p1”’的原始数据p1,最后再通过IFFT模块将p1进行IFFT处理,得到与p0’相同频点的p1’。The RMB demodulates p1" by the demodulation module to obtain the demodulated p1"', and then FFTs the p1"' by the FFT module, removes the data "0", and obtains the original data p1 of p1"', and finally P1 is subjected to IFFT processing by the IFFT module to obtain p1' of the same frequency point as p0'.
最后,RMB向UE发送p1’,此时UE同时收到合路信号中的p0’,与RMB发送的p1’。其中,p0’在BBU和RRU的缓存中的存储时间可以根据实际情况而定,比如参考RMB的处理时间、以及其他可能的时延综合
考虑而定,使得UE收到的p0’与p1’在时间上是同步的。由此可见,通过另一种无线传输的方式,在室内***的上行传输也实现了MIMO,提高了***性能。Finally, the RMB transmits p1' to the UE, at which time the UE simultaneously receives p0' in the combined signal and p1' transmitted from the RMB. The storage time of p0' in the cache of the BBU and the RRU may be determined according to actual conditions, such as the processing time of the reference RMB, and other possible delay synthesis.
Depending on the consideration, p0' and p1' received by the UE are synchronized in time. It can be seen that through another wireless transmission mode, MIMO is also implemented in the uplink transmission of the indoor system, thereby improving system performance.
综上所述,本发明实施例提供的室内多天线***,在下行传输时,通过LMU将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行不同频点的变频,再将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,将得到的合路信号同时发送给UE和RMB,其中RMB在将变频后的其他天线通道信号中的至少一个信号的频点恢复至原来频点后也发送至该UE,使得UE能够同时收到合路信号中的第一天线通道信号、至少一个信号的频点恢复的恢复信号,从而通过无线的方式在下行传输时实现MIMO;在上行传输时,UE同时向信号收发支路和RMB发送的上行信号,而后RMB将变频后的上行信号向信号收发支路发送,LMU再将变频后的上行信号恢复至原来的频点后将恢复信号和接收到的上行信号发送至基站,从而通过无线的方式在上行传输时也实现MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the indoor multi-antenna system provided by the embodiment of the present invention performs frequency conversion of different antenna channels other than the first antenna channel signal of the plurality of antenna channel signals output by the base station through the LMU during downlink transmission. And combining the first antenna channel signal with the frequency-converted other antenna channel signals, and simultaneously transmitting the obtained combined signal to the UE and the RMB, wherein the RMB is in the other antenna channel signals after the frequency conversion After the frequency of the at least one signal is restored to the original frequency, the UE is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency recovery of the at least one signal, thereby The method implements MIMO in downlink transmission; in uplink transmission, the UE simultaneously sends an uplink signal to the signal transmission and reception branch and the RMB, and then the RMB transmits the frequency-converted uplink signal to the signal transmission and reception branch, and the LMU further converts the uplink signal after the frequency conversion. After returning to the original frequency point, the recovery signal and the received uplink signal are sent to the base station, thereby implementing the M in the uplink mode by wireless. IMO can be seen to enable multi-antenna technology without increasing antenna deployment, thereby improving system performance without increasing cost.
本发明实施例提供一种室外多天线***,如图8所示,该室外多天线***包括:An embodiment of the present invention provides an outdoor multi-antenna system. As shown in FIG. 8, the outdoor multi-antenna system includes:
基站、本地模块(Local Module,以下简称LM)、第一天线模块、第二天线模块、至少一个演进远端射频单元(advanced RRU,以下简称aRRU)、至少一个演进远端模块(advanced Remote Module,以下简称:aRM);a base station, a local module (hereinafter referred to as LM), a first antenna module, a second antenna module, at least one evolved remote radio unit (advanced RRU, hereinafter referred to as aRRU), and at least one evolved remote module (advanced remote module) Hereinafter referred to as: aRM);
对于下行传输,基站输出多个天线通道信号,以至少两个天线通道信号为一组,且每一组天线通道信号中的信号数目相同;For downlink transmission, the base station outputs multiple antenna channel signals, and at least two antenna channel signals are grouped, and the number of signals in each group of antenna channel signals is the same;
基站通过第一天线模块向UE发送第一组天线通道信号;Transmitting, by the first antenna module, the first group of antenna channel signals to the UE by using the first antenna module;
LM用于将除第一组天线通道信号外的至少一组天线通道信号通过第二天线模块向至少一个aRRU发送;The LM is configured to send at least one group of antenna channel signals except the first group of antenna channel signals to the at least one aRRU through the second antenna module;
若aRRU的下一级为另一aRRU,则aRRU用于将接收到的至少一组天线通道信号中的至少一组天线通道信号向另一aRRU发送;若aRRU的下一级为aRM则aRRU用于将接收到的至少一组天线通道信号中的至少
一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向aRM发送;If the next level of the aRRU is another aRRU, the aRRU is configured to send at least one of the received at least one set of antenna channel signals to another aRRU; if the next level of the aRRU is aRM, the aRRU is used At least one of the at least one set of antenna channel signals to be received
Each antenna channel signal of a group of antenna channel signals is respectively frequency-converted at different frequency points to obtain at least one group of frequency-converted antenna channel signals, and is sent to the aRM;
aRM用于将接收到的至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向UE发送;The aRM is configured to restore a frequency point corresponding to each of the received at least one set of the converted antenna channel signals to a frequency point of each antenna channel signal of the first group of antenna channel signals, to obtain at least one The restored antenna channel signal is sent to the UE;
UE用于接收第一天线模块发送的第一组天线通道信号,并接收aRM发送的至少一组恢复后的天线通道信号。The UE is configured to receive the first group of antenna channel signals sent by the first antenna module, and receive at least one group of the restored antenna channel signals sent by the aRM.
示例性的,如图8所示,由于室外多天线***的天线模块多采用双天线,故本实施例中的第一天线模块和第二天线模块也为双天线,基站的多条天线通道传输的天线通道信号可以以两个信号为一组,例如,假设基站的天线通道信号有p0、p1、p2、p3、p2’、p3’、p2”、p3”,可分为p0/p1、p2/p3、p2’/p3’、p2”/p3”四组(“/”表示“和”的意思),其中各组的信号可以为相同信号或者不同信号。For example, as shown in FIG. 8 , since the antenna modules of the outdoor multi-antenna system mostly use dual antennas, the first antenna module and the second antenna module in this embodiment are also dual antennas, and multiple antenna channels of the base station are transmitted. The antenna channel signal can be grouped by two signals. For example, if the antenna channel signal of the base station has p0, p1, p2, p3, p2', p3', p2", p3", it can be divided into p0/p1, p2. Four groups of /p3, p2'/p3', p2"/p3" ("/" means "and"), wherein the signals of each group may be the same signal or different signals.
其中,上述基站可以为eNB,包括:BBU、RRU,BBU和RRU连接,LM和BBU连接。p0/p1由RRU通过第一天线模块直接向UE发送(后文以UE1为例),p2/p3、p2’/p3’、p2”/p3”则由LM通过第二天线模块向aRRU发送。其中,LM与aRRU之间的数据传输可以以数字方式通过通用公共无线电接口(Common Public Radio Interface,以下简称CPRI)实现。The foregoing base station may be an eNB, including: a BBU, an RRU, a BBU, and an RRU, where the LM and the BBU are connected. P0/p1 is directly transmitted by the RRU to the UE through the first antenna module (hereinafter, UE1 is taken as an example), and p2/p3, p2'/p3', p2"/p3" are transmitted by the LM to the aRRU through the second antenna module. The data transmission between the LM and the aRRU can be implemented digitally through a Common Public Radio Interface (CPRI).
如图8所示aRRU0接收到p2/p3、p2’/p3’、p2”/p3”后向下级的aRRU1传递p2/p3、p2’/p3’、p2”/p3”中的至少一组信号,图8中示例性的aRRU0给aRRU1发送的是p2/p3、p2’/p3’。其中,aRRU之间的数据传输也可以以数字方式通过CPRI实现。As shown in FIG. 8, aRRU0 transmits at least one of p2/p3, p2'/p3', p2"/p3" to aRRU1 of the lower stage after receiving p2/p3, p2'/p3', p2"/p3". The exemplary aRRU0 in Figure 8 sends p2/p3, p2'/p3' to aRRU1. Among them, the data transmission between aRRU can also be realized digitally through CPRI.
aRRU1收到之后将p2/p3、p2’/p3’中的至少一组,比如p2’/p3’分别进行不同频点的变频,即将p2’变为一个频点,p3’变为另一个频点。而后将变频后的p2’/p3’发送至aRM1。其中,aRRU与aRM之间的数据传输可以通过空中接口。After aRRU1 is received, at least one of p2/p3 and p2'/p3', such as p2'/p3', is frequency-converted at different frequencies, that is, p2' becomes a frequency point, and p3' becomes another frequency. point. The converted p2'/p3' is then sent to aRM1. Among them, the data transmission between aRRU and aRM can be through the air interface.
aRM1收到p2’/p3’后,对p2’/p3’再次进行变频,将p2’的频点恢复至与p0相同的频点,p3’的频点恢复至与p1相同的频点,而后再将恢复后的p2’/p3’发送至UE1,此时UE1就能够同时收到p0/p1和
p2’/p3’。其中,进行变频时还可以引入参考时钟信号,该信号是由基站提供并同天线通道信号一并发送过来的,或者该信号可以是GPS信号。After aRM1 receives p2'/p3', it converts p2'/p3' again, restores the frequency of p2' to the same frequency as p0, and restores the frequency of p3' to the same frequency as p1, and then Then send the restored p2'/p3' to UE1, at this time UE1 can receive p0/p1 and
P2'/p3'. Wherein, the reference clock signal may also be introduced when the frequency conversion is performed, and the signal is provided by the base station and sent together with the antenna channel signal, or the signal may be a GPS signal.
当然,通过配置aRRU还可以使UE1同时收到p0/p1、p2/p3、p2’/p3’、p2”/p3”,并且上述基站发送p0/p1、p2/p3、p2’/p3’、p2”/p3”仅仅为示例性的,基站还可能发送更多组信号,UE也就能同时收到更多组信号,由此可见,在没有增加天线数量的基础上,能够大量增加天线通道信号,通过无线的方式实现了下行传输的大规模MIMO,提高了***性能。Of course, by configuring the aRRU, UE1 can also receive p0/p1, p2/p3, p2'/p3', p2"/p3", and the base station transmits p0/p1, p2/p3, p2'/p3', P2"/p3" is merely exemplary. The base station may also send more groups of signals, and the UE can also receive more groups of signals at the same time. It can be seen that the antenna channel can be increased in a large amount without increasing the number of antennas. The signal realizes massive MIMO of downlink transmission by means of wireless, and improves system performance.
另外,值得一提的是,若aRM1由于某种原因无法从aRRU获取信号时,aRRU可以将信号先发送至aRM0,由aRM0发送至aRM1。其中,aRM之间的数据传输可以以模拟方式通过空中接口实现。并且,在另一种可能的实现方式中,aRM也可以直接通过第二天线模块与LM连接,其传输方法与前述实施例中RMB的与LMU连接的下行传输方法相似。In addition, it is worth mentioning that if aRM1 cannot obtain a signal from the aRRU for some reason, the aRRU can send the signal to aRM0 first and aRM0 to aRM1. Among them, the data transmission between aRM can be realized in an analog manner through the air interface. Moreover, in another possible implementation manner, the aRM may also be directly connected to the LM through the second antenna module, and the transmission method is similar to the downlink transmission method of the RMB connected to the LMU in the foregoing embodiment.
对于上行传输,包括:For upstream transmissions, include:
UE还用于向第一天线模块以及一个aRM发送上行信号;The UE is further configured to send an uplink signal to the first antenna module and an aRM;
aRM还用于将接收到的上行信号进行信号同步和模数转换处理,并将处理后的信号转为IQ数据信号,并将IQ数据信号向aRM上级的aRRU发送;The aRM is further configured to perform signal synchronization and analog-to-digital conversion processing on the received uplink signal, and convert the processed signal into an IQ data signal, and send the IQ data signal to the aRRU of the upper aRM;
若aRRU的上级为第二天线模块,aRRU还用于将接收到的IQ数据信号向第二天线模块发送;若aRRU的上级为另一aRRU,aRRU还用于将接收到的IQ数据信号向另一aRRU发送,直至发送至第二天线模块;If the upper stage of the aRRU is the second antenna module, the aRRU is further configured to send the received IQ data signal to the second antenna module; if the upper level of the aRRU is another aRRU, the aRRU is further used to send the received IQ data signal to another An aRRU is sent until it is sent to the second antenna module;
基站还用于接收第一天线模块接收到的上行信号,并接收本地模块通过第二天线模块接收到的IQ数据信号。The base station is further configured to receive an uplink signal received by the first antenna module, and receive an IQ data signal that is received by the local module by using the second antenna module.
示例性的,如图9所示:Illustrative, as shown in Figure 9:
UE1向上级的aRM1发送一上行信号,假设为p。UE1 sends an uplink signal to aRM1 of the upper level, which is assumed to be p.
aRM1将接收到的p进行信号同步和模数转换处理,并将处理后的信号转为同相正交(In-phase,Quadrature,以下简称:IQ)数据信号,并将IQ数据信号通过aRM1上级的至少一个aRRU发送至第二天线模块,例如图8中aRM1向发送aRRU1发送IQ数据信号,aRRU1向aRRU0发送IQ
数据信号,aRRU0向第二天线模块发送IQ数据信号,第二天线模块将IQ数据信号传输给LM,LM将IQ数据信号传输给基站的BBU,同时第一天线模块将接收到的上行信号p通过RRU传输给BBU,可见基站的BBU同时收到了IQ数据信号和上行信号p这两组信号。aRM1 performs signal synchronization and analog-to-digital conversion processing on the received p, and converts the processed signal into an in-phase (Quadrature, hereinafter referred to as: IQ) data signal, and passes the IQ data signal through the upper level of aRM1. At least one aRRU is sent to the second antenna module. For example, in FIG. 8, aRM1 sends an IQ data signal to the transmitting aRRU1, and aRRU1 sends an IQ to aRRU0.
The data signal, aRRU0 sends an IQ data signal to the second antenna module, the second antenna module transmits the IQ data signal to the LM, and the LM transmits the IQ data signal to the BBU of the base station, and the first antenna module passes the received uplink signal p. The RRU is transmitted to the BBU. It can be seen that the BBU of the base station simultaneously receives the two sets of signals of the IQ data signal and the uplink signal p.
或者,上行传输可以包括:Alternatively, the uplink transmission can include:
UE还用于向第一天线模块以及一个aRM发送上行信号;The UE is further configured to send an uplink signal to the first antenna module and an aRM;
aRM还用于将上行信号进行变频,得到变频后的上行信号,并向aRM上级的aRRU发送;The aRM is also used to frequency-convert the uplink signal to obtain the up-converted uplink signal, and send it to the aRRU of the upper aRM;
若aRRU的上级为第二天线模块,aRRU还用于将接收到的变频后的上行信号向第二天线模块发送;若aRRU的上级为另一aRRU,aRRU还用于将接收到的变频后的上行信号向另一aRRU发送,直至发送至第二天线模块;If the upper stage of the aRRU is the second antenna module, the aRRU is further configured to send the received up-converted uplink signal to the second antenna module; if the upper level of the aRRU is another aRRU, the aRRU is also used to receive the received frequency conversion. The uplink signal is sent to another aRRU until it is sent to the second antenna module;
LM还用于将第二天线模块接收到的变频后的上行信号的频点恢复至与上行信号相同的频点,得到恢复后的上行信号,并向基站发送恢复后的上行信号;The LM is further configured to restore the frequency point of the frequency-converted uplink signal received by the second antenna module to the same frequency point as the uplink signal, obtain the recovered uplink signal, and send the restored uplink signal to the base station;
基站还用于接收第一天线模块接收到的上行信号,并接收LM发送的恢复后的上行信号。The base station is further configured to receive an uplink signal received by the first antenna module, and receive the restored uplink signal sent by the LM.
示例性的,如图10所示,依然以UE1为例,UE1向上级的aRM1发送一上行信号,假设为p。Exemplarily, as shown in FIG. 10, UE1 is still taken as an example, and UE1 sends an uplink signal to aRM1 of the upper level, which is assumed to be p.
aRM1接收到p后,将p进行变频得到p’,而后将变频后的p’通过至少一级aRRU传输至第二天线模块,如图9所示,aRM1向aRRU1发送变频后的p’,aRRU1向aRRU0发送变频后的p’,aRRU0向第二天线模块发送变频后的p’。After receiving the p, the aRM1 converts p to obtain p', and then transmits the converted p' to the second antenna module through at least one aRRU. As shown in FIG. 9, aRM1 sends the converted p', aRRU1 to aRRU1. After transmitting the converted p' to aRRU0, aRRU0 sends the converted p' to the second antenna module.
第二天线模块收到变频后的p’后,将变频后的p’发送至LM,LM将变频后的p’再经过变频,将变频后的p’的频点恢复为与p相同的频点得到p”(可以理解为p”就是将p’还原回p,),而后将恢复后的p”发送至基站,此时基站就同时收到了p和恢复后的p”两路信号。After receiving the converted p', the second antenna module sends the converted p' to the LM, and the LM converts the converted p' to the frequency, and restores the frequency of the converted p' to the same frequency as p. Point to get p" (which can be understood as p) is to restore p' back to p,), and then send the recovered p" to the base station, at which time the base station receives both p and recovered p" signals.
可选的,在另一种可能的实现方式中,aRM也可以直接通过第二天线模块与LM连接,其传输方法与前述实施例中RMB的与LMU连接的上行传输方法相似。
Optionally, in another possible implementation manner, the aRM may also be directly connected to the LM through the second antenna module, and the transmission method is similar to the uplink transmission method of the RMB connected to the LMU in the foregoing embodiment.
在本实施例中,LM可以内置在基站中,也可以外接于基站,图8、图9、图10所示为内置于基站。In this embodiment, the LM may be built in the base station or externally connected to the base station, and FIG. 8, FIG. 9, and FIG. 10 are built in the base station.
通过上述实施例可以看出,在下行传输时,基站能够同时接收两路信号,当然上述仅仅为示例性的,由于室外***可能为很多UE服务,所以通过以上方法基站还可能同时接收更多组信号,由此可见,在没有增加天线数量的基础上,能够大量增加天线通道信号,通过无线的方式实现了上行传输的大规模MIMO,提高了***性能。It can be seen that, in the downlink transmission, the base station can receive two signals at the same time. Of course, the foregoing is merely exemplary. Since the outdoor system may serve many UEs, the base station may also receive more groups by the above method. The signal can be seen that, without increasing the number of antennas, the antenna channel signal can be greatly increased, and the large-scale MIMO of the uplink transmission is realized by the wireless method, thereby improving the system performance.
综上所述,本发明实施例提供的室外多天线***,在下行传输时,通过第一天线模块将一组天线通道信号发送给UE,再通过第二天线模块将其他组天线通道信号传输给aRRU,aRRU将其他组天线通道信号进行变频后传输至aRM,通过aRM将变频后其他组天线通道信号进行再变频后恢复原来频点,并发送给UE,从而使得UE能够同时接收到多组天线通道信号,从而通过无线的方式在下行传输时实现大规模MIMO;在上行传输时,第一天线模块接收UE发送的上行信号,从而发送给基站,aRM接收发送的上行信号将该上行信号进行一系列处理后发送给aRRU,由aRRU发送至第二天线模块,从而发送给基站,使得基站能够同时接收到多组天线通道信号,从而通过无线的方式在上行传输时实现大规模MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the outdoor multi-antenna system provided by the embodiment of the present invention transmits a set of antenna channel signals to the UE through the first antenna module in the downlink transmission, and transmits the signals of the other group antenna channels to the UE through the second antenna module. aRRU, aRRU converts the other groups of antenna channel signals to aRM, re-converts the other groups of antenna channel signals after amplification, restores the original frequency points, and sends them to the UE, so that the UE can receive multiple sets of antennas at the same time. The channel signal is used to implement large-scale MIMO in the downlink mode. In the uplink transmission, the first antenna module receives the uplink signal sent by the UE, and sends the uplink signal to the base station, and the aRM receives the transmitted uplink signal to perform the uplink signal. The series is processed and sent to the aRRU, which is sent by the aRRU to the second antenna module, and is sent to the base station, so that the base station can receive multiple sets of antenna channel signals at the same time, thereby implementing large-scale MIMO in the uplink transmission in a wireless manner. Multi-antenna technology without increasing antenna deployment, enabling cost without increasing costs Under conditions to improve system performance.
本发明实施例提供一种多天线实现方法,可应用于前述室内多天线***,如图11所示,该方法包括:An embodiment of the present invention provides a multi-antenna implementation method, which can be applied to the foregoing indoor multi-antenna system. As shown in FIG. 11, the method includes:
S101、将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中变频后的其他天线通道信号中每个信号的频点不同。S101. Perform frequency conversion on other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals output by the base station, to obtain other antenna channel signals after frequency conversion, wherein frequency of each signal in the other antenna channel signals after frequency conversion different.
S102、将第一天线通道信号与变频后的其他天线通道信号进行合路,得到合路信号。S102: Combine the first antenna channel signal with the other antenna channel signals after the frequency conversion to obtain a combined signal.
S103、向UE和至少一个远端输入多输出盒子RMB发送合路信号,以便接收到合路信号的RMB将接收到的合路信号中的变频后的其他天线通道信号中至少一个信号的频点恢复至与第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将至少一个恢复后的天线
通道信号向UE发送,使得UE获取合路信号中的第一天线通道信号,并接收至少一个RMB发送的至少一个恢复后的天线通道信号。S103. Send a combined signal to the UE and the at least one remote input multiple output box RMB, so that the frequency at least one of the converted other antenna channel signals in the received combined signal of the received combined signal of the RMB is received. Recovering to the same frequency as the first antenna channel signal, obtaining at least one recovered antenna channel signal, and at least one restored antenna
The channel signal is sent to the UE, so that the UE acquires the first antenna channel signal in the combined signal and receives at least one restored antenna channel signal sent by the at least one RMB.
本发明实施例提供的多天线实现方法,通过LMU将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行不同频点的变频,再将第一天线通道信号与变频后的其他天线通道信号进行合路,将得到的合路信号同时发送给UE和RMB,其中RMB在将变频后的其他天线通道信号中的至少一个信号的频点恢复至原来频点后也发送至该UE,使得UE能够同时收到合路信号中的第一天线通道信号、至少一个信号的频点恢复的恢复信号,从而通过无线的方式实现MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。The multi-antenna implementation method provided by the embodiment of the present invention uses the LMU to perform frequency conversion of different antenna channels other than the first antenna channel signal of the plurality of antenna channel signals output by the base station, and then converts the first antenna channel signal and the frequency conversion. After the other antenna channel signals are combined, the combined combined signals are simultaneously sent to the UE and the RMB, wherein the RMB transmits the frequency of at least one of the other antenna channel signals after the frequency conversion is restored to the original frequency point. Up to the UE, enabling the UE to simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency point recovery of the at least one signal, thereby implementing MIMO in a wireless manner, which can be seen without increasing the antenna deployment. Implement multi-antenna technology to improve system performance without increasing costs.
为了使本领域技术人员能够更清楚地理解本发明实施例提供的技术方案,下面通过具体的实施例,对本发明的实施例提供的多天线实现方法进行详细说明,示例性的,本实施例可应用于前述室内多天线***,该室内多天线***包括:基站、LMU、合路单元、馈线、与馈线连接的至少一条信号收发支路,以及至少一个RMB。In order to enable a person skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present invention, the multi-antenna implementation method provided by the embodiments of the present invention is described in detail below by way of specific embodiments. The indoor multi-antenna system includes: a base station, an LMU, a combining unit, a feeder, at least one signal transmitting and receiving branch connected to the feeder, and at least one RMB.
在下行传输时,如图12所示,该方法包括:In the downlink transmission, as shown in FIG. 12, the method includes:
S201、LMU将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中变频后的其他天线通道信号中每个信号的频点不同。S201. The LMU frequency-converts other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals output by the base station, and obtains other antenna channel signals after the frequency conversion, wherein the frequency of each of the other antenna channel signals after the frequency conversion is converted. The point is different.
S202、合路单元将第一天线通道信号与变频后的其他天线通道信号进行合路,得到合路信号。S202: The combining unit combines the first antenna channel signal with the converted other antenna channel signals to obtain a combined signal.
S203、信号收发支路向UE和至少一个远端输入多输出盒子RMB发送合路信号。S203. The signal transceiving branch sends a combined signal to the UE and the at least one remote input multi-output box RMB.
S204、RMB将接收到的合路信号中的变频后的其他天线通道信号中至少一个信号的频点恢复至与第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号。S204. The RMB restores a frequency point of at least one of the converted other antenna channel signals in the received combined signal to the same frequency as the first antenna channel signal, to obtain at least one restored antenna channel signal.
S205、RMB将得到至少一个恢复后的天线通道信号向UE发送。S205. The RMB sends at least one recovered antenna channel signal to the UE.
S206、UE获取合路信号中的第一天线通道信号,并接收至少一个RMB发送的至少一个恢复后的天线通道信号。
S206. The UE acquires a first antenna channel signal in the combined signal, and receives at least one restored antenna channel signal sent by the at least one RMB.
其中,上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图1所示的室内对天线***中的内容完全相同,具体可参照图1所示的前述***中的内容,不再赘述。The specific method of the foregoing steps, the structure of each unit performing the above steps, and the connection relationship of each unit are completely the same as those in the indoor antenna system shown in FIG. 1, and specifically, the foregoing system shown in FIG. The content of this will not be repeated.
在上行传输时,如图13所示,该方法包括:In the uplink transmission, as shown in FIG. 13, the method includes:
S207、信号收发支路接收UE发送的上行信号,以及接收至少一个RMB发送的变频后的上行信号。S207. The signal transceiver branch receives the uplink signal sent by the UE, and receives the frequency-converted uplink signal sent by the at least one RMB.
S208、LMU将变频后的上行信号的恢复至与上行信号相同的频点,得到恢复后的上行信号。S208. The LMU restores the frequency-converted uplink signal to the same frequency as the uplink signal, and obtains the restored uplink signal.
S209、LMU向基站发送上行信号和恢复后的上行信号。S209. The LMU sends an uplink signal and a recovered uplink signal to the base station.
其中,上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图2所示的室内对天线***中的内容完全相同,具体可参照图2所示的前述***中的内容,不再赘述。The specific method of each step, the structure of each unit performing the above steps, and the connection relationship of each unit are completely the same as those in the indoor antenna system shown in FIG. 2, and specifically refer to the foregoing system shown in FIG. 2. The content of this will not be repeated.
综上所述,本发明实施例提供的多天线实现方法,在下行传输时,通过LMU将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行不同频点的变频,再将第一天线通道信号与变频后的其他天线通道信号进行合路,将得到的合路信号同时发送给UE和RMB,其中RMB在将变频后的其他天线通道信号中的至少一个信号的频点恢复至原来频点后也发送至该UE,使得UE能够同时收到合路信号中的第一天线通道信号、至少一个信号的频点恢复的恢复信号,从而通过无线的方式在下行传输时实现MIMO;在上行传输时,UE同时向信号收发支路和RMB发送的上行信号,而后RMB将变频后的上行信号向信号收发支路发送,LMU再将变频后的上行信号恢复至原来的频点后将恢复信号和接收到的上行信号发送至基站,从而通过无线的方式在上行传输时也实现MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the multi-antenna implementation method provided by the embodiment of the present invention performs frequency conversion of different antenna channel signals other than the first antenna channel signal of multiple antenna channel signals output by the base station through the LMU during downlink transmission. And combining the first antenna channel signal with the converted other antenna channel signals, and simultaneously transmitting the obtained combined signal to the UE and the RMB, wherein the at least one of the other antenna channel signals of the RMB after the frequency conversion is performed After the frequency point is restored to the original frequency point, the UE is also sent to the UE, so that the UE can simultaneously receive the first antenna channel signal in the combined signal and the recovery signal of the frequency point recovery of at least one signal, thereby transmitting in the downlink manner through the wireless manner. MIMO is implemented; in the uplink transmission, the UE simultaneously sends the uplink signal to the signal transmission and reception branch and the RMB, and then the RMB transmits the frequency-converted uplink signal to the signal transmission and reception branch, and the LMU restores the converted uplink signal to the original signal. After the frequency point, the recovered signal and the received uplink signal are sent to the base station, so that MIMO is also realized in the uplink mode by wireless, which is visible. Multi-antenna technology can be implemented without increasing antenna deployment, enabling system performance to be improved without increasing cost.
另外,可选的,上述方法也可以采用离散频谱信号实现,示例性的,本发明实施例还提供另一种多天线实现方法,可以应用于前述室内多天线***,该室内多天线***包括:基站、LMU、合路单元、馈线、与馈线连接的至少一条信号收发支路,以及至少一个RMB;其中,基站输出多个天线通道信号。如图14所示,该方法包括:
In addition, the above method may also be implemented by using a discrete spectrum signal. For example, the embodiment of the present invention further provides another multi-antenna implementation method, which may be applied to the foregoing indoor multi-antenna system, where the indoor multi-antenna system includes: a base station, an LMU, a combining unit, a feeder, at least one signal transceiving branch connected to the feeder, and at least one RMB; wherein the base station outputs a plurality of antenna channel signals. As shown in FIG. 14, the method includes:
S301、将多个天线通道信号中的第一天线通道信号进行快速傅里叶反变换(Inverse Fast Fourier Transform,以下简称:IFFT)或离散傅里叶反变换(Inverse Discrete Fourier Transform,以下简称:IDFT)得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据联合进行IFFT或IDFT,得到离散的其他天线通道信号。S301. Perform inverse fast Fourier transform (IFFT) or Inverse Discrete Fourier Transform (IDFT) on the first antenna channel signal of the plurality of antenna channel signals. Obtaining a discrete first antenna channel signal, combining other antenna channel signals other than the first antenna channel signal with the first data for IFFT or IDFT, to obtain discrete other antenna channel signals.
S302、将离散的其他天线通道信号进行调制,得到调制后的其他天线通道信号。S302. Modulate the other antenna channel signals to obtain other modulated antenna channel signals.
S303、将调制后的第一天线通道信号进行缓存后与调制后的其他天线通道信号进行合路,得到合路信号。S303: Cache the modulated first antenna channel signal and combine the modulated other antenna channel signals to obtain a combined signal.
S304、将合路信号向UE和至少一个RMB发送,以便接收到合路信号的RMB将接收到的合路信号中,调制后的其他天线通道信号中至少一个信号进行解调得到至少一个解调后的其他天线通道信号,再对解调后的其他天线通道信号进行快速傅里叶变换(Fast Fourier Transform,FFT)或离散傅里叶反变换(Discrete Fourier Transform,DFT)移除第一数据,得到至少一个其他天线通道信号的原始信号,再将至少一个其他天线通道信号的原始信号进行IFFT或IDFT,得到至少一个与离散的第一天线通道信号的频点相同的离散的其他天线通道信号,将至少一个与离散的第一天线通道信号的频点相同的离散的其他天线通道信号向UE发送,使得UE接收一条信号收发支路发送的合路信号,获取合路信号中的离散的第一天线通道信号,并接收至少一个RMB发送的至少一个与离散的第一天线通道信号的频点相同的离散的其他天线通道信号。S304. Send the combined signal to the UE and the at least one RMB, so that the RMB that receives the combined signal will receive at least one of the modulated other antenna channel signals to obtain at least one demodulation. After the other antenna channel signals, the demodulated other antenna channel signals are subjected to Fast Fourier Transform (FFT) or Discrete Fourier Transform (DFT) to remove the first data. Obtaining an original signal of at least one other antenna channel signal, and performing IFFT or IDFT on the original signal of the at least one other antenna channel signal to obtain at least one other discrete antenna channel signal that is the same as the frequency of the discrete first antenna channel signal. And transmitting at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal to the UE, so that the UE receives the combined signal sent by one signal transceiver branch to obtain a discrete first in the combined signal An antenna channel signal and receiving at least one of the at least one transmitted by the RMB and the discrete first antenna channel signal The same point of the other antenna discrete channel signals.
其中,上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图7所示的室内对天线***中的内容完全相同,具体可参照图7所示的前述***中的内容,不再赘述。The specific method of each step, the structure of each unit performing the above steps, and the connection relationship of each unit are completely the same as those in the indoor antenna system shown in FIG. 7. For details, refer to the foregoing system shown in FIG. The content of this will not be repeated.
综上所述,本实施例提供的多天线实现方法,首先将基站输出的多个天线通道信号中的第一天线通道信号进行IFFT或IDFT处理,将其他天线通道信号和第一数据进行IFFT或IDFT处理,而后将得到的多个离散的天线通道信号合路后向发送UE和至少一个RMB发送,接收到合路信号的RMB将接收到的合路信号进行解调并对解调后的其他天线通道信号进行FFT或DFT移除第一数据,得到至少一个其他天线通道信号的原始信
号,而后将原始信号进行IFFT或IDFT,得到至少一个与离散的第一天线通道信号的频点相同的离散的其他天线通道信号,并将该信号发送至UE,从而UE就收到了合路信号中的离散的第一天线通道信号和RMB发送的离散的其他天线通道信号,从而通过无线的方式实现MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the multi-antenna implementation method provided by the embodiment first performs IFFT or IDFT processing on the first antenna channel signal of the plurality of antenna channel signals output by the base station, and performs IFFT or the other antenna channel signal and the first data. IDFT processing, and then the obtained plurality of discrete antenna channel signals are combined and sent to the transmitting UE and the at least one RMB, and the RMB receiving the combined signal demodulates the received combined signal and demodulates the other The antenna channel signal performs FFT or DFT to remove the first data, and obtains the original signal of at least one other antenna channel signal.
And then performing the IFFT or IDFT on the original signal to obtain at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal, and transmitting the signal to the UE, so that the UE receives the combined signal The discrete first antenna channel signal and the discrete other antenna channel signals transmitted by the RMB, thereby implementing MIMO in a wireless manner, and it can be seen that the multi-antenna technology can be realized without increasing the antenna deployment, thereby being able to increase the cost without increasing the cost. Improve system performance in case.
本发明实施例还提供一种多天线实现方法,可应用于前述室外多天线***,如图15所示,该方法包括:The embodiment of the present invention further provides a multi-antenna implementation method, which can be applied to the foregoing outdoor multi-antenna system. As shown in FIG. 15, the method includes:
S401、向UE发送第一组天线通道信号。S401. Send a first group of antenna channel signals to the UE.
S402、将除第一组天线通道信号外的至少一组天线通道信号向至少一个aRRU发送;其中,每一组天线通道信号包括基站输出的多个天线通道信号中的至少两个天线通道信号,且每一组天线通道信号中的信号数目相同。S402. Send at least one group of antenna channel signals except the first group of antenna channel signals to at least one aRRU, where each group of antenna channel signals includes at least two antenna channel signals of the plurality of antenna channel signals output by the base station. And the number of signals in each group of antenna channel signals is the same.
以便于至少一个aRRU接收到至少一组天线通道信号后,若aRRU的下一级为另一aRRU,则aRRU将接收到的至少一组天线通道信号中的至少一组天线通道信号向另一aRRU发送;若aRRU的下一级为aRM,则aRRU将接收到的至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向aRM发送,以便于aRM将接收到的至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向UE发送,使得UE用于接收第一组天线通道信号和至少一组恢复后的天线通道信号。After the at least one aRRU receives at least one set of antenna channel signals, if the next stage of the aRRU is another aRRU, the aRRU transmits at least one of the at least one set of antenna channel signals to the other aRRU. Transmitting; if the next level of the aRRU is aRM, the aRRU performs frequency conversion of each of the at least one set of the antenna channel signals of the at least one set of antenna channel signals to obtain at least one group The converted antenna channel signal is sent to the aRM, so that the aRM restores the frequency corresponding to each of the received at least one set of the converted antenna channel signals to the signal of the first group of antenna channels. At least a set of recovered antenna channel signals are obtained from the frequency points of each antenna channel signal, and are transmitted to the UE, so that the UE is configured to receive the first group of antenna channel signals and the at least one set of restored antenna channel signals.
为了使本领域技术人员能够更清楚地理解本发明实施例提供的技术方案,下面通过具体的实施例,对本发明的实施例提供的多天线实现方法进行详细说明,示例性的,本实施例可应用于前述室外通信***,该室外多天线***包括:基站、LM、第一天线模块、第二天线模块、至少一个aRRU、至少一个aRM;其中,基站输出多个天线通道信号,以至少两个天线通道信号为一组,且每一组天线通道信号中的信号数目相同。在下行传输时,如图16所示,该方法包括:
In order to enable a person skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present invention, the multi-antenna implementation method provided by the embodiments of the present invention is described in detail below by way of specific embodiments. The outdoor multi-antenna system includes: a base station, an LM, a first antenna module, a second antenna module, at least one aRRU, and at least one aRM; wherein the base station outputs a plurality of antenna channel signals, at least two The antenna channel signals are a group, and the number of signals in each group of antenna channel signals is the same. In the downlink transmission, as shown in FIG. 16, the method includes:
S501、基站通过第一天线模块向UE发送第一组天线通道信号。S501. The base station sends, by using the first antenna module, a first group of antenna channel signals to the UE.
S502、LM通过第二天线模块将除第一组天线通道信号外的至少一组天线通道信号向至少一个aRRU发送。S502. The LM sends, by using the second antenna module, at least one group of antenna channel signals except the first group of antenna channel signals to the at least one aRRU.
S503、aRRU接收到至少一组天线通道信号后,若aRRU的下一级为另一aRRU,则执行S504;若aRRU的下一级为aRM,则执行S505。S503. After the at least one set of antenna channel signals is received by the aRRU, if the next level of the aRRU is another aRRU, then S504 is performed; if the next level of the aRRU is aRM, then S505 is performed.
S504、aRRU将接收到的至少一组天线通道信号中的至少一组天线通道信号向另一aRRU发送。S504. The aRRU sends at least one of the received at least one set of antenna channel signals to another aRRU.
S505、aRRU将接收到的至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向aRM发送。S505. The aRRU performs frequency conversion of each of the at least one set of antenna channel signals of the at least one set of antenna channel signals to obtain a minimum frequency of the antenna channel signals, and obtains at least one set of the converted antenna channel signals, and sends the signal to the aRM. send.
S506、aRM将接收到的至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向UE发送。S506. The aRM restores the frequency point corresponding to each of the at least one set of the converted antenna channel signals to a frequency point of each antenna channel signal in the first group of antenna channel signals, to obtain at least one. The recovered antenna channel signal is sent to the UE.
S507、UE接收第一组天线通道信号和至少一组恢复后的天线通道信号。S507. The UE receives the first group of antenna channel signals and the at least one group of restored antenna channel signals.
其中,上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图8所示的室内对天线***中的内容完全相同,具体可参照图8所示的前述***中的内容,不再赘述。The specific method of each step, the structure of each unit performing the above steps, and the unit connection relationship are completely the same as those in the indoor antenna system shown in FIG. 8. For details, refer to the foregoing system shown in FIG. The content of this will not be repeated.
在上行传输时,如图17所示,该方法包括:In the uplink transmission, as shown in FIG. 17, the method includes:
S508、基站接收UE发送的上行信号。S508. The base station receives an uplink signal sent by the UE.
S509、基站接收至少一个aRRU发送的IQ数据信号;IQ数据信号是由aRM对上行信号进行信号同步和模数转换处理,并将处理后的信号转换后得到,并发送至aRRU的。S509. The base station receives the IQ data signal sent by the at least one aRRU. The IQ data signal is subjected to signal synchronization and analog-to-digital conversion processing on the uplink signal by the aRM, and the processed signal is converted and sent to the aRRU.
其中,上行信号是基站通过第一天线模块接收到的,至少一个aRRU发送的IQ数据信号是通过LM从第二天线模块接收到的。图17中所示的S508、S509的顺序只是示例性的,实际情况中S508、S509也可以同时执行。The uplink signal is received by the base station by using the first antenna module, and the IQ data signal sent by the at least one aRRU is received by the LM from the second antenna module. The order of S508, S509 shown in Fig. 17 is merely exemplary, and in actual case, S508, S509 can also be performed simultaneously.
上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图9所示的室内对天线***中的内容完全相同,具体可参照图9所示的前述***中的内容,不再赘述。
The specific method of each step, the structure of each unit performing the above steps, and the unit connection relationship are completely the same as those in the indoor antenna system shown in FIG. 9. For details, refer to the contents of the foregoing system shown in FIG. ,No longer.
或者,在上行传输时,如图18所示,该方法包括:Or, in the uplink transmission, as shown in FIG. 18, the method includes:
S510、基站接收用户设备发送的上行信号。S510. The base station receives an uplink signal sent by the user equipment.
S511、LM接收至少一个aRRU发送的变频后的上行信号。变频后的上行信号是由aRM对上行信号进行变频后生成,并发送至aRRU的。S511. The LM receives the frequency-converted uplink signal sent by at least one aRRU. The up-converted uplink signal is generated by aRM converting the uplink signal and sent to the aRRU.
S512、LM将接收到的变频后的上行信号的频点恢复至与上行信号相同的频点,得到恢复后的上行信号,并将恢复后的上行信号发送给基站。S512 and LM restore the frequency of the received uplink signal to the same frequency as the uplink signal, obtain the recovered uplink signal, and send the restored uplink signal to the base station.
S513、基站接收LM发送的恢复后的上行信号。从而,基站就得到了用户设备发送的上行信号,以及LM发送的恢复后的上行信号。S513. The base station receives the restored uplink signal sent by the LM. Therefore, the base station obtains the uplink signal sent by the user equipment and the restored uplink signal sent by the LM.
上述各个步骤的具体方法、执行上述步骤的各个单元的结构以及各个单元连接关系,与图10所示的室内对天线***中的内容完全相同,具体可参照图10所示的前述***中的内容,不再赘述。The specific method of each step, the structure of each unit performing the above steps, and the connection relationship of each unit are completely the same as those in the indoor antenna system shown in FIG. 10, and specifically refer to the content in the foregoing system shown in FIG. ,No longer.
综上所述,本发明实施例提供的多天线实现方法,在下行传输时,通过第一天线模块将一组天线通道信号发送给UE,再通过第二天线模块将其他组天线通道信号传输给aRRU,aRRU将其他组天线通道信号进行变频后传输至aRM,通过aRM将变频后其他组天线通道信号进行再变频后恢复原来频点,并发送给UE,从而使得UE能够同时接收到多组天线通道信号,从而通过无线的方式在下行传输时实现大规模MIMO;在上行传输时,第一天线模块接收UE发送的上行信号,从而发送给基站,aRM接收发送的上行信号将该上行信号进行一系列处理后发送给aRRU,由aRRU发送至第二天线模块,从而发送给基站,使得基站能够同时接收到多组天线通道信号,从而通过无线的方式在上行传输时实现大规模MIMO,可见能够在不增加天线部署的情况下实现多天线技术,从而能够在不提高成本的情况下提高***性能。In summary, the multi-antenna implementation method provided by the embodiment of the present invention transmits a set of antenna channel signals to the UE through the first antenna module in the downlink transmission, and transmits the signals of the other group antenna channels to the UE through the second antenna module. aRRU, aRRU converts the other groups of antenna channel signals to aRM, re-converts the other groups of antenna channel signals after amplification, restores the original frequency points, and sends them to the UE, so that the UE can receive multiple sets of antennas at the same time. The channel signal is used to implement large-scale MIMO in the downlink mode. In the uplink transmission, the first antenna module receives the uplink signal sent by the UE, and sends the uplink signal to the base station, and the aRM receives the transmitted uplink signal to perform the uplink signal. The series is processed and sent to the aRRU, which is sent by the aRRU to the second antenna module, and is sent to the base station, so that the base station can receive multiple sets of antenna channel signals at the same time, thereby implementing large-scale MIMO in the uplink transmission in a wireless manner. Multi-antenna technology without increasing antenna deployment, enabling cost without increasing costs Under conditions to improve system performance.
在本发明所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接
口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. At another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some connections.
The indirect coupling or communication connection of the port, device or unit may be in electrical, mechanical or other form.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.
Claims (32)
- 一种室内多天线***,其特征在于,所述室内多天线***包括:基站、本地多输入多输出单元LMU、合路单元、馈线、与所述馈线连接的至少一条信号收发支路,以及至少一个远端输入多输出盒子RMB;其中,所述基站输出多个天线通道信号;An indoor multi-antenna system, comprising: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, at least one signal transmitting and receiving branch connected to the feeder, and at least a remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;所述LMU用于将所述多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中所述变频后的其他天线通道信号中每个信号的频点不同;The LMU is configured to frequency-convert other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals to obtain other antenna channel signals after frequency conversion, wherein each of the other antenna channel signals after the frequency conversion is used The frequency of the signal is different;所述合路单元用于将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,得到合路信号;所述合路信号通过所述馈线传输至所述至少一条信号收发支路,并向用户设备和至少一个所述RMB发送所述合路信号;The combining unit is configured to combine the first antenna channel signal and the frequency-converted other antenna channel signals to obtain a combined signal; and the combined signal is transmitted to the at least one signal through the feeder Transmitting and transmitting a branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;所述RMB用于将接收到的所述合路信号中,所述变频后的其他天线通道信号中至少一个信号的频点恢复至与所述第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将所述至少一个恢复后的天线通道信号向所述用户设备发送;The RMB is used to restore a frequency point of at least one of the converted other antenna channel signals to the same frequency point as the first antenna channel signal, to obtain at least one of the received combined signals. Recovering the antenna channel signal, and transmitting the at least one restored antenna channel signal to the user equipment;所述用户设备用于接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个恢复后的天线通道信号。The user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the first antenna channel signal in the combined signal, and receive the at least one recovery sent by at least one of the RMB Rear antenna channel signal.
- 根据权利要求1所述的室内多天线***,其特征在于,还包括:The indoor multi-antenna system according to claim 1, further comprising:所述用户设备用于向所述一条信号收发支路和至少一个所述RMB发送上行信号;The user equipment is configured to send an uplink signal to the one signal transceiver branch and the at least one RMB;所述RMB用于接收所述上行信号,并对接收到的所述上行信号进行变频,得到变频后的上行信号,并向所述一条信号收发支路发送所述变频后的上行信号;The RMB is configured to receive the uplink signal, perform frequency conversion on the received uplink signal, obtain an up-converted uplink signal, and send the frequency-converted uplink signal to the one signal transceiver branch;所述一条信号收发支路用于接收所述上行信号以及所述变频后的上行信号,并将所述上行信号和所述变频后的上行信号作为一路信号通过所述馈线传输至所述LMU;The signal transmitting and receiving branch is configured to receive the uplink signal and the frequency-converted uplink signal, and transmit the uplink signal and the frequency-converted uplink signal as a signal to the LMU through the feeder;所述LMU用于将所述变频后的上行信号的恢复至与所述上行信号相同的频点,得到恢复后的上行信号,并将所述上行信号和所述恢复后的 上行信号传输至所述基站。The LMU is configured to restore the frequency-converted uplink signal to the same frequency point as the uplink signal, obtain a recovered uplink signal, and obtain the uplink signal and the restored uplink signal. The uplink signal is transmitted to the base station.
- 根据权利要求1或2所述的室内多天线***,其特征在于,The indoor multi-antenna system according to claim 1 or 2, characterized in that所述合路单元外接于所述LMU,其中,所述LMU的第一端与所述基站连接,所述LMU的第二端与所述合路单元的第一端连接,所述合路单元的第二端通过所述馈线与每条所述信号收发支路连接;The combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;或者,所述合路单元内置于所述LMU中,所述LMU的第一端与所述基站连接,所述LMU的第二端与通过所述馈线与每条所述信号收发支路连接;Alternatively, the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;所述LMU外接于所述基站,或者内置于所述基站中;The LMU is externally connected to the base station or built in the base station;其中,所述信号发射支路包括:耦合器、功分器、至少一根天线,所述耦合器的输入端与所述馈线连接、所述耦合器的输出端与所述功分器的输入端连接,所述功分器的输出端与每根所述天线连接。The signal transmitting branch includes: a coupler, a power splitter, and at least one antenna, an input end of the coupler is connected to the feeder, an output of the coupler, and an input of the power splitter The terminals are connected, and the output of the power splitter is connected to each of the antennas.
- 根据权利要求3所述的室内多天线***,其特征在于,所述合路单元具体用于:The indoor multi-antenna system according to claim 3, wherein the combining unit is specifically configured to:获取所述基站输出的预设频率的参考时钟信号、预设同步信号、操作维护信号中的至少一种;Obtaining at least one of a reference clock signal, a preset synchronization signal, and an operation and maintenance signal of a preset frequency output by the base station;将所述第一天线通道信号、所述变频后的其他天线通道信号,以及所述预设频率的信号、所述预设同步信号、所述操作维护信号中的至少一种进行合路,得到所述合路信号。Combining the first antenna channel signal, the frequency-converted other antenna channel signal, and the signal of the preset frequency, the preset synchronization signal, and the operation and maintenance signal to obtain a path The combined signal.
- 根据权利要求4所述的室内多天线***,其特征在于,所述参考时钟信号包括频率为10MHz的信号或频率为122.88MHz的信号;The indoor multi-antenna system according to claim 4, wherein the reference clock signal comprises a signal having a frequency of 10 MHz or a signal having a frequency of 122.88 MHz;当所述室内多天线***应用于时分双工***时,所述预设同步信号为收发切换的控制信号;When the indoor multi-antenna system is applied to a time division duplex system, the preset synchronization signal is a control signal for transmitting and receiving switching;所述操作维护信号包括增益控制信号、时延控制信号、相位调整信号中的至少一种。The operation and maintenance signal includes at least one of a gain control signal, a delay control signal, and a phase adjustment signal.
- 根据权利要求5所述的室内多天线***,其特征在于,所述RMB还用于:The indoor multi-antenna system according to claim 5, wherein the RMB is further used to:根据所述操作维护信号对所述RMB的下行链路的传输特性参数进行调整,所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。 And adjusting, according to the operation and maintenance signal, a transmission characteristic parameter of a downlink of the RMB, where the transmission characteristic parameter of the downlink includes at least one of an amplification gain, a delay parameter, and a phase parameter.
- 根据权利要求2所述的室内多天线***,其特征在于,所述RMB还用于:The indoor multi-antenna system according to claim 2, wherein the RMB is further used for:根据接收到的所述合路信号,或者根据所述用户设备发送的所述上行信号,对所述RMB的下行链路的传输特性参数进行调整;所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。Adjusting, according to the received combined signal, or according to the uplink signal sent by the user equipment, a downlink transmission characteristic parameter of the RMB; the downlink transmission characteristic parameter includes an amplification gain At least one of a delay parameter and a phase parameter.
- 根据权利要求2所述的室内多天线***,其特征在于,所述基站还用于:The indoor multi-antenna system according to claim 2, wherein the base station is further configured to:根据所述用户设备发送的所述上行信号的,或所述用户设备发送的信道状态指示,对所述RMB的下行链路的传输特性参数进行调整,所述下行链路的传输特性参数包括放大增益、时延参数、相位参数中的至少一种。And adjusting, according to the uplink signal sent by the user equipment, or a channel status indication sent by the user equipment, a downlink transmission characteristic parameter of the RMB, where the downlink transmission characteristic parameter includes an amplification At least one of a gain, a delay parameter, and a phase parameter.
- 根据权利要求3所述的室内多天线***,其特征在于,所述基站还用于:The indoor multi-antenna system according to claim 3, wherein the base station is further configured to:在初始化时,根据所述RMB的下行链路的初始传输特性参数对所述基站的所述多条天线通道所传输的信号的参数进行调整,使得所述多条天线通道所传输的天线通道信号的参数的误差在预设范围内;During initialization, the parameters of the signals transmitted by the multiple antenna channels of the base station are adjusted according to the initial transmission characteristic parameters of the downlink of the RMB, so that the antenna channel signals transmitted by the multiple antenna channels are adjusted. The error of the parameter is within the preset range;其中,所述下行链路的初始传输特性参数包括:放大增益、时延参数、相位参数中的至少一种;The initial transmission characteristic parameter of the downlink includes: at least one of an amplification gain, a delay parameter, and a phase parameter;所述天线通道信号的参数包括时延、幅度、相位中的至少一种。The parameters of the antenna channel signal include at least one of delay, amplitude, and phase.
- 根据权利要求3所述的室内多天线***,其特征在于,The indoor multi-antenna system according to claim 3, characterized in that所述用户设备还用于根据所述用户设备能够接收到的所有天线通道信号获取测量结果,并将所述测量结果发送至所述基站,所述测量结果包括能够接收到的各个天线通道信号的信噪比;The user equipment is further configured to acquire a measurement result according to all antenna channel signals that the user equipment can receive, and send the measurement result to the base station, where the measurement result includes each antenna channel signal that can be received. Signal to noise ratio所述基站还用于根据所述测量结果、规定时间内所述用户设备已调度的数据以及所述用户设备当前的数据传输速率,采用比例公平准则为所述用户设备调度时频资源。The base station is further configured to use the proportional fairness criterion to schedule time-frequency resources for the user equipment according to the measurement result, the data that the user equipment has scheduled, and the current data transmission rate of the user equipment.
- 一种本地多输入多输出单元LMU,其特征在于,所述LMU包括:至少一个下行传输单元,所述下行传输单元包括:第一变频器、第一滤波器、第一功率放大模块和第一双工器;A local multiple input multiple output unit LMU, wherein the LMU includes: at least one downlink transmission unit, the downlink transmission unit includes: a first frequency converter, a first filter, a first power amplification module, and a first Diplexer;其中,基站的任一天线通道的信号从所述第一变频器的第一输入端 输入,所述第一变频器的输出端与所述第一滤波器的输入端连接,所述第一滤波器的输出端与所述第一功率放大模块的输入端连接,所述第一功率放大模块的输出端与所述第一双工器的输入端连接,所述第一双工器的输出端连接室内多天线***中的馈线。Wherein the signal of any antenna channel of the base station is from the first input end of the first frequency converter Input, an output end of the first frequency converter is connected to an input end of the first filter, and an output end of the first filter is connected to an input end of the first power amplification module, the first power An output of the amplification module is coupled to an input of the first duplexer, and an output of the first duplexer is coupled to a feeder in the indoor multi-antenna system.
- 根据权利要求11所述的LMU,其特征在于,所述下行传输单元还包括:第二滤波器、功分器、第二功率放大模块和第一锁相环;The LMU according to claim 11, wherein the downlink transmission unit further comprises: a second filter, a power divider, a second power amplification module, and a first phase locked loop;其中,所述第二滤波器的输入端用于输入参考时钟信号,所述第二滤波器的输出端连接所述功分器的输入端,所述功分器的第一输出端连接所述第一锁相环的输入端,所述第一锁相环的输出端连接所述第一变频器的第二输入端,所述功分器的第二输出端连接所述第二功率放大模块的输入端,所述第二功率放大模块的输出端连接所述的第一双工器;The input end of the second filter is used to input a reference clock signal, the output end of the second filter is connected to the input end of the power splitter, and the first output end of the power splitter is connected to the An input end of the first phase locked loop, an output end of the first phase locked loop is connected to a second input end of the first frequency converter, and a second output end of the power splitter is connected to the second power amplification module The input end of the second power amplifying module is connected to the first duplexer;预设同步信号和操作维护信号连接所述第一双工器。A preset synchronization signal and an operation and maintenance signal are connected to the first duplexer.
- 根据权利要求11或12所述的LMU,其特征在于,所述LMU还包括:至少一个上行传输单元,所述上行传输单元包括:第二双工器、第三功率放大模块、第四功率放大模块、第二变频器、第三滤波器、第五功率放大模块;The LMU according to claim 11 or 12, wherein the LMU further comprises: at least one uplink transmission unit, the uplink transmission unit comprises: a second duplexer, a third power amplification module, and a fourth power amplification Module, second frequency converter, third filter, fifth power amplification module;其中,所述第二双工器的输入端连接室内多天线***中的馈线,所述第二双工器的第一输出端连接所述第三功率放大模块的输入端,所述第三功率放大模块的输出端连接所述室内多天线***中的基站;所述第二双工器的第二输出端连接所述第四功率放大模块的输入端,所述第四功率放大模块的输出端连接所述第二变频器的第一输入端,所述第二变频器的输出端连接所述第三滤波器的输入端,所述第三滤波器的输出端连接所述第五功率放大模块的输出端,所述第五功率放大模块的输出端连接所述基站。The input end of the second duplexer is connected to a feeder in the indoor multi-antenna system, and the first output end of the second duplexer is connected to the input end of the third power amplifying module, the third power The output end of the amplification module is connected to the base station in the indoor multi-antenna system; the second output end of the second duplexer is connected to the input end of the fourth power amplification module, and the output end of the fourth power amplification module Connecting a first input end of the second frequency converter, an output end of the second frequency converter is connected to an input end of the third filter, and an output end of the third filter is connected to the fifth power amplification module The output of the fifth power amplifying module is connected to the base station.
- 根据权利要求13所述的LMU,其特征在于,所述上行传输单元还包括:第六功率放大模块和第二锁相环;The LMU according to claim 13, wherein the uplink transmission unit further comprises: a sixth power amplification module and a second phase locked loop;其中,所述第六功率放大器的输入端用于输入参考时钟信号,所述第六功率放大器的输出端连接所述第二锁相环的输入端,所述第二锁相环的输出端连接所述第二变频器的第二输入端。The input end of the sixth power amplifier is used to input a reference clock signal, the output end of the sixth power amplifier is connected to the input end of the second phase locked loop, and the output end of the second phase locked loop is connected. a second input of the second frequency converter.
- 根据权利要求14所述的LMU,其特征在于,所述第二功率放大 模块、所述第三功率放大模块、所述第四功率放大模块、所述第五功率放大模块、所述第六功率放大模块为功率放大器;The LMU of claim 14 wherein said second power amplification The module, the third power amplification module, the fourth power amplification module, the fifth power amplification module, and the sixth power amplification module are power amplifiers;所述第一功率放大模块由增益可调功率放大器和一功率放大器串联组成。The first power amplification module is composed of a gain adjustable power amplifier and a power amplifier connected in series.
- 一种远端输入多输出盒子RMB,其特征在于,所述RMB包括:至少一个下行传输单元、第一天线和第二天线,所述下行传输单元包括:第一双工器、第一功率放大模块、第一变频器、第一滤波器、第二功率放大模块;A remote input multiple output box RMB, wherein the RMB includes: at least one downlink transmission unit, a first antenna, and a second antenna, where the downlink transmission unit includes: a first duplexer, a first power amplification Module, first frequency converter, first filter, second power amplification module;其中,所述第一天线连接所述第一双工器的输入端,所述第一双工器的第一输出端连接所述第一功率放大器的输入端,所述第一功率放大模块的输出端连接所述第一变频器的第一输入端,所述第一变频器的输出端连接所述第一滤波器的输入端,所述第一滤波器的输出端连接所述第二功率放大模块的输入端,所述第二功率放大模块的输出端连接所述第二天线。The first antenna is connected to an input end of the first duplexer, and a first output end of the first duplexer is connected to an input end of the first power amplifier, where the first power amplification module is The output end is connected to the first input end of the first frequency converter, the output end of the first frequency converter is connected to the input end of the first filter, and the output end of the first filter is connected to the second power An input end of the amplification module, and an output end of the second power amplification module is connected to the second antenna.
- 根据权利要求16所述的远端输入多输出盒子RMB,其特征在于,所述下行传输单元还包括:第三功率放大模块、第一锁相环;The remote input multi-output box RMB according to claim 16, wherein the downlink transmission unit further comprises: a third power amplification module, a first phase locked loop;其中,所述第一双工器的第二输出端连接所述第三功率放大模块的输入端,所述第一双工器的第二输出端用于输出接收到的参考时钟信号,所述第三功率放大模块的输出端连接所述第一锁相环的输入端,所述第一锁相环的输出端连接所述第一变频器的第二输入端。The second output end of the first duplexer is connected to the input end of the third power amplifying module, and the second output end of the first duplexer is configured to output the received reference clock signal, The output end of the third power amplifier module is connected to the input end of the first phase locked loop, and the output end of the first phase locked loop is connected to the second input end of the first frequency converter.
- 根据权利要求16或17所述的RMB,其特征在于,所述RMB还包括:至少一个上行传输单元,所述上行传输单元包括:第二滤波器、第四功率放大模块、第二变频器、第三滤波器、第五功率放大模块;The RMB according to claim 16 or 17, wherein the RMB further comprises: at least one uplink transmission unit, the uplink transmission unit comprises: a second filter, a fourth power amplification module, a second frequency converter, a third filter, a fifth power amplification module;其中,所述第一天线连接所述第二滤波器的输入端,所述第二滤波器的输出端连接所述第四功率放大模块的输入端,所述第四功率放大模块的输出端连接所述第二变频器的第一输入端,所述第二变频器的输出端连接所述第三滤波器的输入端,所述第三滤波器的输出端连接所述第五功率放大器的输入端,所述第五功率放大器的输出端连接所述第二天线。The first antenna is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the fourth power amplifying module, and the output end of the fourth power amplifying module is connected. a first input end of the second frequency converter, an output end of the second frequency converter is connected to an input end of the third filter, and an output end of the third filter is connected to an input of the fifth power amplifier The output of the fifth power amplifier is connected to the second antenna.
- 根据权利要求18所述的RMB,其特征在于,所述上行传输单元 还包括:第四滤波器、功分器和第二锁相环;The RMB according to claim 18, wherein said uplink transmission unit The method further includes: a fourth filter, a power splitter, and a second phase locked loop;其中,所述第四滤波器的输入端用于输入参考时钟信号,所述第四滤波器的输出端连接所述功分器的输入端,所述功分器的输出端连接所述第二锁相环的输入端,所述第二锁相环的输出端连接所述第二变频器的第二输入端。The input end of the fourth filter is used to input a reference clock signal, the output end of the fourth filter is connected to the input end of the power splitter, and the output end of the power splitter is connected to the second An input end of the phase locked loop, and an output end of the second phase locked loop is connected to the second input end of the second frequency converter.
- 根据权利要求19所述的RMB,其特征在于,The RMB according to claim 19, characterized in that所述第一功率放大模块、所述第三功率放大模块、所述第四功率放大模块为功率放大器;The first power amplification module, the third power amplification module, and the fourth power amplification module are power amplifiers;所述第二功率放大模块和所述第五功率放大模块由增益可调功率放大器和一功率放大器串联组成。The second power amplification module and the fifth power amplification module are composed of a gain adjustable power amplifier and a power amplifier connected in series.
- 一种室内多天线***,其特征在于,所述室内多天线***包括:基站、本地多输入多输出单元LMU、合路单元、馈线、与所述馈线连接的至少一条信号收发支路,以及至少一个远端输入多输出盒子RMB;其中,所述基站输出多个天线通道信号;An indoor multi-antenna system, comprising: a base station, a local multiple input multiple output unit LMU, a combining unit, a feeder, at least one signal transmitting and receiving branch connected to the feeder, and at least a remote input multi-output box RMB; wherein the base station outputs a plurality of antenna channel signals;所述基站用于将所述多个天线通道信号中的第一天线通道信号进行快速傅里叶反变换IFFT或离散傅里叶反变换IDFT得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据联合进行IFFT或IDFT,得到离散的其他天线通道信号;The base station is configured to perform an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform IDFT on the first antenna channel signal of the multiple antenna channel signals to obtain a discrete first antenna channel signal, and the first antenna channel Other antenna channel signals other than the signal are combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals;所述LMU用于将所述离散的其他天线通道信号进行调制,得到调制后的其他天线通道信号;The LMU is configured to modulate the discrete other antenna channel signals to obtain modulated other antenna channel signals;所述基站将调制后的第一天线通道信号进行缓存后传输至所述合路单元,所述LMU将调制后的其他天线通道信号传输至所述合路单元;The base station buffers the modulated first antenna channel signal and transmits the signal to the combining unit, and the LMU transmits the modulated other antenna channel signal to the combining unit;所述合路单元用于将所述离散的第一天线通道信号与所述调制后的其他天线通道信号进行合路,得到合路信号;所述合路单元通过所述馈线将所述合路信号发送至至少一条信号收发支路,并向用户设备和至少一个所述RMB发送所述合路信号;The combining unit is configured to combine the discrete first antenna channel signals with the modulated other antenna channel signals to obtain a combined signal; the combining unit passes the combined road through the feeder Transmitting a signal to the at least one signal transceiving branch, and transmitting the combined signal to the user equipment and the at least one of the RMBs;所述RMB用于将接收到的所述合路信号中,所述调制后的其他天线通道信号中至少一个信号进行解调得到至少一个解调后的其他天线通道信号,再对所述解调后的其他天线通道信号进行FFT或DFT移除所述第一数据,得到至少一个其他天线通道信号的原始信号,再将所述至少一 个其他天线通道信号的原始信号进行IFFT或IDFT,得到至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号,将所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号向所述用户设备发送;The RMB is configured to demodulate at least one of the modulated other antenna channel signals into the received combined signal to obtain at least one demodulated other antenna channel signal, and then perform the demodulation The other antenna channel signals are subjected to FFT or DFT to remove the first data, to obtain an original signal of at least one other antenna channel signal, and then the at least one The original signals of the other antenna channel signals are subjected to IFFT or IDFT to obtain at least one other antenna channel signal that is the same as the frequency of the discrete first antenna channel signals, and the at least one and the first of the discrete Dissipating other antenna channel signals of the antenna channel signal having the same frequency point to the user equipment;所述用户设备用于接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述离散的第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号。The user equipment is configured to receive the combined signal sent by a signal transceiver branch, acquire the discrete first antenna channel signal in the combined signal, and receive the at least one of the at least one of the RMB transmissions A discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal.
- 根据权利要求21所述的室内多天线***,其特征在于,The indoor multi-antenna system according to claim 21, wherein所述合路单元外接于所述LMU,其中,所述LMU的第一端与所述基站连接,所述LMU的第二端与所述合路单元的第一端连接,所述合路单元的第二端通过所述馈线与每条所述信号收发支路连接;The combining unit is externally connected to the LMU, wherein a first end of the LMU is connected to the base station, and a second end of the LMU is connected to a first end of the combining unit, the combining unit The second end of the second end is connected to each of the signal transceiver branches through the feeder;或者,所述合路单元内置于所述LMU中,所述LMU的第一端与所述基站连接,所述LMU的第二端与通过所述馈线与每条所述信号收发支路连接;Alternatively, the combining unit is built in the LMU, the first end of the LMU is connected to the base station, and the second end of the LMU is connected to each of the signal transmitting and receiving branches through the feeder;所述LMU外接于所述基站,或者内置于所述基站中;The LMU is externally connected to the base station or built in the base station;所述信号发射支路包括:耦合器、功分器、至少一根天线,所述耦合器的输入端与所述馈线连接、所述耦合器的输出端与所述功分器的输入端连接,所述功分器的输出端与每根所述天线连接。The signal transmitting branch includes: a coupler, a power splitter, at least one antenna, an input end of the coupler is connected to the feed line, and an output end of the coupler is connected to an input end of the power splitter The output of the power splitter is connected to each of the antennas.
- 一种室外多天线***,其特征在于,所述室外多天线***包括:基站、本地模块、第一天线模块、第二天线模块、至少一个演进远端射频单元、至少一个演进远端模块;所述基站输出多个天线通道信号,以至少两个天线通道信号为一组,且每一组天线通道信号中的信号数目相同;An outdoor multi-antenna system, comprising: a base station, a local module, a first antenna module, a second antenna module, at least one evolved remote radio unit, and at least one evolved remote module; The base station outputs a plurality of antenna channel signals, and the at least two antenna channel signals are grouped, and the number of signals in each group of antenna channel signals is the same;所述基站通过所述第一天线模块向用户设备发送第一组天线通道信号;Transmitting, by the first antenna module, the first group of antenna channel signals to the user equipment by using the first antenna module;所述本地模块用于将除所述第一组天线通道信号外的至少一组天线通道信号通过所述第二天线模块向所述至少一个演进远端射频单元发送;The local module is configured to send at least one group of antenna channel signals except the first group of antenna channel signals to the at least one evolved remote radio unit through the second antenna module;若所述演进远端射频单元的下一级为另一演进远端射频单元,则所 述演进远端射频单元用于将接收到的所述至少一组天线通道信号中的至少一组天线通道信号向所述另一演进远端射频单元发送;若所述演进远端射频单元的下一级为所述演进远端模块,则所述演进远端射频单元用于将接收到的所述至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向所述演进远端模块发送;If the next level of the evolved remote radio unit is another evolved remote radio unit, The evolved remote radio unit is configured to send at least one of the received at least one set of antenna channel signals to the another evolved remote radio unit; if the evolved remote radio unit is under The first stage is the evolved remote module, and the evolved remote radio unit is configured to separately perform each of the at least one set of the antenna channel signals of the received at least one set of antenna channel signals. Frequency conversion of the frequency point, obtaining at least one set of converted antenna channel signals, and transmitting to the evolved remote module;所述演进远端模块用于将接收到的所述至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与所述第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向所述用户设备发送;The evolved remote module is configured to restore a frequency point corresponding to each of the at least one set of the converted antenna channel signals to each of the first group of antenna channel signals At least a set of recovered antenna channel signals are obtained from the frequency of the channel signal and sent to the user equipment;所述用户设备用于接收所述第一天线模块发送的所述第一组天线通道信号,并接收所述无限远端模块发送的所述至少一组恢复后的天线通道信号。The user equipment is configured to receive the first group of antenna channel signals sent by the first antenna module, and receive the at least one set of restored antenna channel signals sent by the infinite remote module.
- 根据权利要求23所述的室外多天线***,其特征在于,The outdoor multi-antenna system according to claim 23, wherein所述用户设备还用于向所述第一天线模块以及一个演进远端模块发送上行信号;The user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;所述演进远端模块还用于将接收到的所述上行信号进行信号同步和模数转换处理,并将处理后的信号转为同相正交IQ数据信号,并将所述IQ数据信号向所述演进远端模块上级的演进远端射频单元发送;The evolved remote module is further configured to perform signal synchronization and analog-to-digital conversion processing on the received uplink signal, and convert the processed signal into an in-phase orthogonal IQ data signal, and forward the IQ data signal to the The evolved remote radio unit of the evolved remote module is sent by the evolved remote radio unit;若所述演进远端射频单元的上级为所述第二天线模块,所述演进远端射频单元还用于将接收到的所述IQ数据信号向所述第二天线模块发送;若所述演进远端射频单元的上级为另一演进远端射频单元,所述演进远端射频单元还用于将接收到的所述IQ数据信号向所述另一演进远端射频单元发送,直至发送至所述第二天线模块;If the upper stage of the evolved remote radio unit is the second antenna module, the evolved remote radio unit is further configured to send the received IQ data signal to the second antenna module; The upper stage of the remote radio unit is another evolved remote radio unit, and the evolved remote radio unit is further configured to send the received IQ data signal to the another evolved remote radio unit until sent to the Said second antenna module;所述基站还用于接收所述第一天线模块接收到的所述上行信号,并接收所述本地模块通过所述第二天线模块接收到的所述IQ数据信号。The base station is further configured to receive the uplink signal received by the first antenna module, and receive the IQ data signal that is received by the local module by using the second antenna module.
- 根据权利要求23所述的室外多天线***,其特征在于,The outdoor multi-antenna system according to claim 23, wherein所述用户设备还用于向所述第一天线模块以及一个演进远端模块发送上行信号;The user equipment is further configured to send an uplink signal to the first antenna module and an evolved remote module;所述演进远端模块还用于将所述上行信号进行变频,得到变频后的 上行信号,并向所述演进远端模块上级的演进远端射频单元发送;The evolved remote module is further configured to perform frequency conversion on the uplink signal to obtain a frequency converted And sending an uplink signal to the evolved remote radio unit of the egress of the evolved remote module;若所述演进远端射频单元的上级为所述第二天线模块,所述演进远端射频单元还用于将接收到的所述变频后的上行信号向所述第二天线模块发送;若所述演进远端射频单元的上级为另一演进远端射频单元,所述演进远端射频单元还用于将接收到的所述变频后的上行信号向所述另一演进远端射频单元发送,直至发送至所述第二天线模块;If the upper stage of the evolved remote radio unit is the second antenna module, the evolved remote radio unit is further configured to send the received uplink signal to the second antenna module; The evolved remote radio unit is further configured to send the received uplink signal to the another evolved remote radio unit. Until being sent to the second antenna module;所述本地模块还用于将所述第二天线模块接收到的所述变频后的上行信号的频点恢复至与所述上行信号相同的频点,得到恢复后的上行信号,并向所述基站发送所述恢复后的上行信号;The local module is further configured to restore a frequency point of the frequency-converted uplink signal received by the second antenna module to a frequency point that is the same as the uplink signal, to obtain a recovered uplink signal, and to the Sending, by the base station, the recovered uplink signal;所述基站还用于接收所述第一天线接收到的所述上行信号,并接收所述本地模块发送的所述恢复后的上行信号。The base station is further configured to receive the uplink signal received by the first antenna, and receive the restored uplink signal sent by the local module.
- 根据权利要求23-25任一所述的室外多天线***,其特征在于,An outdoor multi-antenna system according to any of claims 23-25, characterized in that第一演进远端模块还用于向第二演进远端模块传输信号,所述信号包括所述变频后的天线通道信号、所述IQ数据信号、所述变频后的上行信号中的任意一种;The first evolved remote module is further configured to transmit a signal to the second evolved remote module, where the signal includes any one of the converted antenna channel signal, the IQ data signal, and the frequency-converted uplink signal. ;所述第一演进远端模块、所述第二演进远端模块为所述至少一个演进远端模块中的任意两个演进远端模块。The first evolved remote module and the second evolved remote module are any two evolved remote modules of the at least one evolved remote module.
- 一种多天线实现方法,其特征在于,所述方法包括:A multi-antenna implementation method, the method comprising:将基站输出的多个天线通道信号中第一天线通道信号之外其他天线通道信号进行变频,得到变频后的其他天线通道信号,其中所述变频后的其他天线通道信号中每个信号的频点不同;Transforming other antenna channel signals other than the first antenna channel signal of the plurality of antenna channel signals output by the base station to obtain other antenna channel signals after frequency conversion, wherein frequency of each signal in the other antenna channel signals after the frequency conversion different;将所述第一天线通道信号与所述变频后的其他天线通道信号进行合路,得到合路信号;Combining the first antenna channel signal with the frequency-converted other antenna channel signals to obtain a combined signal;向用户设备和至少一个远端输入多输出盒子RMB发送所述合路信号,以便接收到所述合路信号的所述RMB将接收到的所述合路信号中的所述变频后的其他天线通道信号中至少一个信号的频点恢复至与所述第一天线通道信号相同的频点,得到至少一个恢复后的天线通道信号,并将所述至少一个恢复后的天线通道信号向所述用户设备发送,使得所述用户设备获取所述合路信号中的所述第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个恢复后的天线通道信号。 Transmitting the combined signal to the user equipment and the at least one remote input multi-output box RMB, so that the other antenna of the combined signal in the combined signal that the RMB of the combined signal will receive is received Recovering a frequency point of at least one of the channel signals to the same frequency point as the first antenna channel signal, obtaining at least one recovered antenna channel signal, and transmitting the at least one restored antenna channel signal to the user The device sends, so that the user equipment acquires the first antenna channel signal in the combined signal, and receives at least one of the at least one restored antenna channel signal sent by the RMB.
- 根据权利要求27所述的方法,其特征在于,所述方法还包括:The method of claim 27, wherein the method further comprises:接收所述用户设备发送的上行信号,以及接收至少一个RMB发送的变频后的上行信号;Receiving an uplink signal sent by the user equipment, and receiving an up-converted uplink signal sent by at least one RMB;将所述变频后的上行信号的恢复至与所述上行信号相同的频点,得到恢复后的上行信号;Recovering the converted uplink signal to the same frequency point as the uplink signal, and obtaining the restored uplink signal;向所述基站发送所述上行信号和所述恢复后的上行信号。Sending the uplink signal and the recovered uplink signal to the base station.
- 一种多天线实现方法,其特征在于,所述方法包括:A multi-antenna implementation method, the method comprising:将所述多个天线通道信号中的第一天线通道信号进行快速傅里叶反变换IFFT或离散傅里叶反变换IDFT得到离散的第一天线通道信号,将第一天线通道信号之外其他天线通道信号与第一数据联合进行IFFT或IDFT,得到离散的其他天线通道信号;Performing an inverse fast Fourier transform IFFT or an inverse discrete Fourier transform (IDFT) on the first antenna channel signal of the plurality of antenna channel signals to obtain a discrete first antenna channel signal, and using the antenna other than the first antenna channel signal The channel signal is combined with the first data for IFFT or IDFT to obtain discrete other antenna channel signals;将所述离散的其他天线通道信号进行调制,得到调制后的其他天线通道信号;Modulating the discrete other antenna channel signals to obtain modulated other antenna channel signals;将调制后的第一天线通道信号进行缓存后与所述调制后的其他天线通道信号进行合路,得到合路信号;The modulated first antenna channel signal is buffered and combined with the modulated other antenna channel signals to obtain a combined signal;将所述合路信号向用户设备和至少一个所述RMB发送,以便接收到所述合路信号的所述RMB将接收到的所述合路信号中,所述调制后的其他天线通道信号中至少一个信号进行解调得到至少一个解调后的其他天线通道信号,再对所述解调后的其他天线通道信号进行快速傅里叶变换FFT或离散傅里叶变换DFT移除所述第一数据,得到至少一个其他天线通道信号的原始信号,再将所述至少一个其他天线通道信号的原始信号进行IFFT或IDFT,得到至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号,将所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号向所述用户设备发送,使得所述用户设备接收一条信号收发支路发送的所述合路信号,获取所述合路信号中的所述离散的第一天线通道信号,并接收至少一个所述RMB发送的所述至少一个与所述离散的第一天线通道信号的频点相同的离散的其他天线通道信号。Transmitting the combined signal to the user equipment and the at least one of the RMBs, so that the combined signal that the RMB that receives the combined signal will receive, in the modulated other antenna channel signals Demodulating at least one signal to obtain at least one demodulated other antenna channel signal, and performing fast Fourier transform FFT or discrete Fourier transform DFT on the demodulated other antenna channel signal to remove the first Data, obtaining an original signal of at least one other antenna channel signal, and performing an IFFT or IDFT on the original signal of the at least one other antenna channel signal to obtain at least one dispersion that is the same as a frequency of the discrete first antenna channel signal And the other antenna channel signals transmit the at least one discrete other antenna channel signal that is the same as the frequency of the discrete first antenna channel signal to the user equipment, so that the user equipment receives a signal transmission and reception branch Transmitting the combined signal, acquiring the discrete first antenna channel signal in the combined signal, and receiving at least one The RMB frequency transmitting at least one first discrete antenna and the channel signal is the same as the other antenna discrete channel signals.
- 一种多天线实现方法,其特征在于,所述方法包括:A multi-antenna implementation method, the method comprising:向用户设备发送第一组天线通道信号; Sending a first set of antenna channel signals to the user equipment;将除所述第一组天线通道信号外的至少一组天线通道信号向所述至少一个演进远端射频单元发送;其中,每一组天线通道信号包括基站输出的多个天线通道信号中的至少两个天线通道信号,且每一组天线通道信号中的信号数目相同;Transmitting at least one set of antenna channel signals other than the first set of antenna channel signals to the at least one evolved remote radio frequency unit; wherein each set of antenna channel signals comprises at least one of a plurality of antenna channel signals output by the base station Two antenna channel signals, and the number of signals in each group of antenna channel signals is the same;以便于所述至少一个演进远端射频单元接收到所述至少一组天线通道信号后,若所述演进远端射频单元的下一级为另一演进远端射频单元,则所述演进远端射频单元将接收到的所述至少一组天线通道信号中的至少一组天线通道信号向所述另一演进远端射频单元发送;若所述演进远端射频单元的下一级为所述演进远端模块,则所述演进远端射频单元将接收到的所述至少一组天线通道信号中的至少一组天线通道信号中的每个天线通道信号分别进行不同频点的变频,得到至少一组变频后的天线通道信号,并向所述演进远端模块发送,以便于所述演进远端模块将接收到的所述至少一组变频后的天线通道信号中的每个天线通道信号的频点对应恢复至与所述第一组天线通道信号中的每个天线通道信号的频点,得到至少一组恢复后的天线通道信号,并向所述用户设备发送,使得用户设备用于接收所述第一组天线通道信号和所述至少一组恢复后的天线通道信号。After the at least one evolved remote radio unit receives the at least one antenna channel signal, if the next stage of the evolved remote radio unit is another evolved remote radio unit, the evolved far end The radio unit transmits at least one of the received at least one set of antenna channel signals to the another evolved remote radio unit; if the next stage of the evolved remote radio unit is the evolution The remote module, the evolved remote radio unit performs frequency conversion of each of the at least one set of the antenna channel signals of the at least one set of antenna channel signals to obtain at least one And converting the antenna channel signal to the evolved remote module, so as to receive the frequency of each of the at least one set of the converted antenna channel signals received by the evolved remote module Point corresponding to recovering to a frequency point of each antenna channel signal of the first group of antenna channel signals, obtaining at least one set of recovered antenna channel signals, and providing the user with the antenna channel signal Preparation transmission, so that the user equipment is configured to receive the first group of antenna channel signal and the antenna signal recovery channel at least one group.
- 根据权利要求30所述的方法,其特征在于,所述方法还包括:The method of claim 30, wherein the method further comprises:接收用户设备发送的上行信号;Receiving an uplink signal sent by the user equipment;接收至少一个演进远端射频单元发送的IQ数据信号;所述IQ数据信号是由所述演进远端模块对所述上行信号进行信号同步和模数转换处理,并将处理后的信号转换后得到,并发送至所述的演进远端射频单元的。Receiving, by the at least one evolved remote radio unit, an IQ data signal, where the IQ data signal is subjected to signal synchronization and analog-to-digital conversion processing on the uplink signal by the evolved remote module, and converting the processed signal to obtain And sent to the evolved remote radio unit.
- 根据权利要求30所述的方法,其特征在于,所述方法还包括:The method of claim 30, wherein the method further comprises:接收用户设备发送的上行信号;Receiving an uplink signal sent by the user equipment;接收至少一个演进远端射频单元发送的变频后的上行信号;所述变频后的上行信号是由所述演进远端模块对所述上行信号进行变频后生成,并发送至所述的演进远端射频单元的;Receiving, by the at least one evolved remote radio unit, the frequency-converted uplink signal, where the converted uplink signal is generated by the evolved remote module, and sent to the evolved remote end Radio frequency unit将接收到的所述变频后的上行信号的频点恢复至与所述上行信号相同的频点,得到恢复后的上行信号。 The frequency point of the received up-converted uplink signal is restored to the same frequency point as the uplink signal, and the recovered uplink signal is obtained.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106357310A (en) * | 2016-09-14 | 2017-01-25 | 京信通信***(中国)有限公司 | Multi-input multi-output signal transmission method and system |
CN113055058A (en) * | 2019-12-27 | 2021-06-29 | 中兴通讯股份有限公司 | Base station, multi-antenna transceiver and control method thereof |
CN113992271A (en) * | 2021-10-26 | 2022-01-28 | 京信网络***股份有限公司 | 5G millimeter wave base station |
CN114401521A (en) * | 2021-12-16 | 2022-04-26 | 北京唯得科技有限公司 | Variable frequency communication transmission method and transmission system |
EP4156526A4 (en) * | 2020-06-05 | 2023-11-22 | Samsung Electronics Co., Ltd. | Antenna filter and electronic device comprising same in wireless communication system |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106879084A (en) * | 2017-03-06 | 2017-06-20 | 上海乾视通信技术有限公司 | A kind of intrinsic safety base station and network system |
IT201700109664A1 (en) * | 2017-09-29 | 2019-03-29 | Teko Telecom S R L | FRONTHAUL SYSTEM FOR A WIRELESS TELECOMMUNICATION NETWORK |
CN112929059B (en) * | 2021-01-29 | 2022-08-16 | 京信网络***股份有限公司 | Distributed antenna system and signal transmission method |
CN114465649A (en) * | 2022-01-21 | 2022-05-10 | 上海卫星工程研究所 | Time modulation array system and modulation method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102098688A (en) * | 2009-12-09 | 2011-06-15 | ***通信集团公司 | Method, system and device for realizing MIMO (multiple input multiple output) of indoor distribution system |
CN102761352A (en) * | 2011-08-01 | 2012-10-31 | 深圳市云海通讯股份有限公司 | FDD-LTE (Frequency Division Duplexing-Long Term Evolution) indoor coverage system and signal transmission method |
WO2013162988A1 (en) * | 2012-04-25 | 2013-10-31 | Corning Cable Systems Llc | Distributed antenna system architectures |
-
2014
- 2014-08-06 CN CN201410385351.9A patent/CN105337646B/en active Active
-
2015
- 2015-08-04 WO PCT/CN2015/086010 patent/WO2016019843A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102098688A (en) * | 2009-12-09 | 2011-06-15 | ***通信集团公司 | Method, system and device for realizing MIMO (multiple input multiple output) of indoor distribution system |
CN102761352A (en) * | 2011-08-01 | 2012-10-31 | 深圳市云海通讯股份有限公司 | FDD-LTE (Frequency Division Duplexing-Long Term Evolution) indoor coverage system and signal transmission method |
WO2013162988A1 (en) * | 2012-04-25 | 2013-10-31 | Corning Cable Systems Llc | Distributed antenna system architectures |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106357310A (en) * | 2016-09-14 | 2017-01-25 | 京信通信***(中国)有限公司 | Multi-input multi-output signal transmission method and system |
CN106357310B (en) * | 2016-09-14 | 2023-05-12 | 京信网络***股份有限公司 | Multiple input multiple output signal transmission method and system |
CN113055058A (en) * | 2019-12-27 | 2021-06-29 | 中兴通讯股份有限公司 | Base station, multi-antenna transceiver and control method thereof |
EP4156526A4 (en) * | 2020-06-05 | 2023-11-22 | Samsung Electronics Co., Ltd. | Antenna filter and electronic device comprising same in wireless communication system |
CN113992271A (en) * | 2021-10-26 | 2022-01-28 | 京信网络***股份有限公司 | 5G millimeter wave base station |
CN113992271B (en) * | 2021-10-26 | 2023-09-26 | 京信网络***股份有限公司 | 5G millimeter wave base station |
CN114401521A (en) * | 2021-12-16 | 2022-04-26 | 北京唯得科技有限公司 | Variable frequency communication transmission method and transmission system |
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