CN117978199A - Base station radio frequency unit and method for processing signals by base station radio frequency unit - Google Patents
Base station radio frequency unit and method for processing signals by base station radio frequency unit Download PDFInfo
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Abstract
The invention provides a base station radio frequency unit, which is connected with a baseband processing unit and comprises: the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are connected in sequence; the digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, and transmitting the downlink signal data after digital intermediate frequency processing to the transceiver subsystem module; the transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing and transmitting downlink radio frequency signals to the radio frequency front subsystem module; and the radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals and transmitting the filtered downlink radio frequency signals to the terminal through the antenna. The base station radio frequency unit provided by the invention realizes the transmission and processing of wireless signals.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a base station radio frequency unit and a method for processing signals by the base station radio frequency unit.
Background
The electronic equipment 5G module is a professional module which provides 5G network access capability for equipment and supports network protocols and interfaces. In the 5G module, based on a 5G chip, components such as a memory chip, a sensor, a capacitor resistor and the like are additionally arranged on a baseband chip and a radio frequency chip according to different requirements, and then the components are integrated on a circuit board, a standard interface is reserved on the circuit board, and the terminal equipment of the Internet of things can be directly connected with a 5G network or can receive instructions to be connected with the 5G network to realize a communication function. The 5G base station is core equipment of the 5G network and is responsible for completing wireless transmission and signal processing functions.
The commercial 5G base station system at present totally works in the Sub-6G frequency band, namely only supports the receiving and processing of wireless signals with the frequency below 6 GHz.
How to realize the receiving and processing of wireless signals with the frequency of more than 6GHz is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a base station radio frequency unit and a method for processing signals through the base station radio frequency unit, which are used for realizing the receiving and the transmitting of wireless signals and processing the wireless signals.
The invention provides a base station radio frequency unit, which is connected with a baseband processing unit and comprises: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data subjected to the digital intermediate frequency processing to the transceiver subsystem module;
The transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data subjected to the digital intermediate frequency processing, generating a downlink radio frequency signal and sending the downlink radio frequency signal to the radio frequency front subsystem module;
The radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna.
According to the base station radio frequency unit provided by the invention, the radio frequency front subsystem module is further used for carrying out low-noise amplification on the uplink signal received from the filter in the uplink direction and sending the uplink signal after low-noise amplification to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
The transceiver subsystem module is further used for performing radio frequency modulation on the received low-noise amplified uplink signal to generate an uplink radio frequency signal, and sending the uplink radio frequency signal to the digital intermediate frequency subsystem module;
The digital intermediate frequency subsystem module is further configured to perform digital intermediate frequency processing on the received uplink radio frequency signal, generate uplink signal data, and send the uplink signal data to the baseband processing unit through the forwarding interface.
According to the base station radio frequency unit provided by the invention, the radio frequency front sub-system module is used for carrying out radio frequency modulation on the downlink signal data after the digital intermediate frequency processing/the uplink signal after the low noise amplification based on a transceiver to generate a downlink radio frequency signal/an uplink radio frequency signal;
wherein the transceiver uses devices supporting 5925-6125MHz frequencies.
According to the base station radio frequency unit provided by the invention, the radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals through the power amplifier in the downlink direction and sending the downlink radio frequency signals after power amplification to the filter;
wherein the power amplifier uses devices supporting 5925-6125MHz frequencies.
According to the base station radio frequency unit provided by the invention, the radio frequency front subsystem module is used for amplifying the uplink signal received from the filter in the uplink direction through the low noise amplifier in a low noise mode and transmitting the uplink signal amplified in the low noise mode to the transceiver subsystem module;
Wherein the low noise amplifier uses devices supporting 5925-6125MHz frequencies.
According to the present invention, there is provided a base station radio frequency unit, further comprising:
and the clock subsystem module is respectively connected with the digital intermediate frequency subsystem module and the transceiver subsystem module and is used for providing clock signals required by operation for the base station radio frequency unit and carrying out jitter removal processing and frequency conversion processing on the clock signals.
According to the present invention, there is provided a base station radio frequency unit, further comprising:
and the power subsystem module is used for providing power input for the base station radio frequency unit and realizing AC-DC and DC-AC power conversion.
According to the base station radio frequency unit provided by the invention, the forwarding interface supports an electric port or an optical port;
wherein the electrical port supports 10GE and the optical port supports a rate greater than 10Gbps.
The invention also provides a method of processing signals by a base station radio frequency unit, the base station radio frequency unit being connected to a baseband processing unit, the base station radio frequency unit comprising: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The method comprises the following steps:
A forward interface connected with a baseband processing unit is configured through a digital intermediate frequency subsystem module, downlink signal data is acquired from the baseband processing unit through the forward interface in the downlink direction, the downlink signal data is subjected to digital intermediate frequency processing, and the downlink signal data after the digital intermediate frequency processing is sent to the transceiver subsystem module;
the received downlink signal data after the digital intermediate frequency processing is subjected to radio frequency modulation through a transceiver subsystem module, a downlink radio frequency signal is generated, and the downlink radio frequency signal is sent to the radio frequency front subsystem module;
And carrying out power amplification on the received downlink radio frequency signals through a radio frequency front sub-system module, and sending the downlink radio frequency signals subjected to power amplification to a filter, so that the filter filters the downlink radio frequency signals subjected to power amplification, and transmitting the downlink radio frequency signals subjected to power amplification to a terminal through an antenna.
According to the present invention there is provided a method of processing signals by a base station radio frequency unit, the method further comprising:
in the uplink direction, the uplink signal received from the filter is amplified in a low noise mode through the radio frequency front subsystem module, and the uplink signal amplified in a low noise mode is sent to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
the received low-noise amplified uplink signal is subjected to radio frequency modulation through a transceiver subsystem module to generate an uplink radio frequency signal, and the uplink radio frequency signal is sent to the digital intermediate frequency subsystem module;
And carrying out digital intermediate frequency processing on the received uplink radio frequency signals through a digital intermediate frequency subsystem module to generate uplink signal data, and sending the uplink signal data to the baseband processing unit through the forwarding interface.
The invention provides a base station radio frequency unit and a method for processing signals by the base station radio frequency unit, wherein the base station radio frequency unit is connected with a baseband processing unit, and the base station radio frequency unit comprises: the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected; the digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data after the digital intermediate frequency processing to the transceiver subsystem module; the transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing to generate a downlink radio frequency signal, and sending the downlink radio frequency signal to the radio frequency front subsystem module; the radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna. Therefore, the base station radio frequency unit provided by the invention realizes the transmission and processing of wireless signals through the cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a base station radio frequency unit provided by the present invention;
fig. 2 is a schematic diagram of a system frame of a base station radio frequency unit provided by the present invention;
Fig. 3 is a schematic block diagram of a base station radio frequency unit for implementing signal transceiving according to the present invention;
FIG. 4 is a flow chart of a method for processing signals by a base station RF unit according to the present invention;
FIG. 5 is a second flowchart of a method for processing signals by a base station RF unit according to the present invention;
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The base station radio frequency unit and the method of processing signals by the base station radio frequency unit of the present invention are described below in connection with fig. 1-5.
Fig. 1 is a schematic diagram of a base station radio frequency unit provided in this embodiment, as shown in fig. 1, where the base station radio frequency unit is connected to a baseband processing unit, and the base station radio frequency unit includes: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data subjected to the digital intermediate frequency processing to the transceiver subsystem module;
The transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data subjected to the digital intermediate frequency processing, generating a downlink radio frequency signal and sending the downlink radio frequency signal to the radio frequency front subsystem module;
The radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna.
It should be noted that, in the mobile communication network, the baseband processing unit (BBU) is an important component of the base station, is a part of the base station system, and is mainly responsible for operations such as encoding, decoding, modulation, demodulation, and the like of signals, and is also responsible for processing transmission and reception of baseband signals, and connection and interaction with the core network. In this embodiment, the base station radio frequency unit is connected to the baseband processing unit, and specifically, the connection between the base station radio frequency unit and the baseband processing unit is implemented through a digital intermediate frequency subsystem module in the base station radio frequency unit.
Specifically, fig. 2 is a schematic diagram of a system frame of a base station radio frequency unit provided in this embodiment, as shown in fig. 2, a digital intermediate frequency subsystem module is composed of an FPGA (Field-Programmable gate array) GATE ARRAY, an MCU (micro control unit), a Memory (Memory for storing and reading digital signals in a communication system), and a control circuit, so as to implement a forwarding interface with a preceding BBU, and is responsible for baseband IQ signal processing (e.g. DDC, DUC, CFR, DPD, etc.), clock synchronization recovery, TDD timing control, and management and monitoring functions of the whole base station radio frequency unit. The TDD (Time Division Duplexing) time sequence control is a technology for realizing full duplex communication through time division, in a TDD system, the time for transmitting and receiving signals is divided into different time slots, the signals transmitted and received are realized through the switching of the time slots, and the TDD time sequence control can realize the time sequence control of a power amplifier device, thereby realizing higher system capacity and better communication quality.
Specifically, the Transceiver subsystem module is composed of a Transceiver (radio Transceiver) integrated chip, and can realize DA/AD conversion, radio frequency modulation, uplink and downlink attenuation control and uplink and downlink small signal amplification functions.
Specifically, the radio frequency front-end subsystem module consists of a PA (power amplifier) and an LNA (low noise amplifier), so that duplex processing of uplink and downlink signals can be realized, the downlink signals can be amplified by the PA, and the uplink signals can be amplified by the LNA; and the antenna is connected with the mobile device, and the signal is transmitted to the mobile device through the antenna in the downlink, so that wireless communication is realized, and the signal of the mobile device is received through the antenna in the uplink.
Further, with continued reference to fig. 2, the base station radio frequency unit also includes a power subsystem module that provides power input to the base station radio frequency unit and implements AC-DC and DC-AC power conversion.
Further, with continued reference to fig. 2, the base station radio frequency unit further includes a clock subsystem module, which is respectively connected to the digital intermediate frequency subsystem module and the transceiver subsystem module, and is configured to provide a clock signal required for operation of the base station radio frequency unit, and perform a debounce process and a frequency conversion process on the clock signal.
Specifically, the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module form a data link channel of the whole base station radio frequency unit, and the power subsystem module and the clock subsystem module respectively provide energy and heartbeat for the whole data link.
In one embodiment, fig. 3 is a schematic block diagram of a base station radio frequency unit for implementing signal transceiving provided in the present embodiment, as shown in fig. 3, in a downlink direction, a digital intermediate frequency subsystem module obtains downlink signal data from a baseband processing unit through a forwarding interface, performs digital intermediate frequency processing on the downlink signal data through an FPGA, and sends the downlink signal data after the digital intermediate frequency processing to a transceiver subsystem module; the Transceiver subsystem module carries out radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing through a transmitter, generates a downlink radio frequency signal and sends the downlink radio frequency signal to the radio frequency front subsystem module; the radio frequency front sub-system module performs power amplification on the received downlink radio frequency signals through the PA, and sends the downlink radio frequency signals after power amplification to the filter, so that the filter filters the downlink radio frequency signals after power amplification, and the filtered downlink radio frequency signals are transmitted to the terminal through the antenna. Thereby enabling signal transmission from the base station to the terminal.
The above is an explanation of the base station radio frequency unit provided by the present invention, where the base station radio frequency unit is connected to the baseband processing unit, and the base station radio frequency unit includes: the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected; the digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data after the digital intermediate frequency processing to the transceiver subsystem module; the transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing to generate a downlink radio frequency signal, and sending the downlink radio frequency signal to the radio frequency front subsystem module; the radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna. Therefore, the base station radio frequency unit provided by the invention realizes the transmission and processing of wireless signals through the cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module.
Based on the above embodiment, in the present embodiment,
The radio frequency front subsystem module is further used for carrying out low-noise amplification on the uplink signal received from the filter in the uplink direction and sending the uplink signal after low-noise amplification to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
The transceiver subsystem module is further used for performing radio frequency modulation on the received low-noise amplified uplink signal to generate an uplink radio frequency signal, and sending the uplink radio frequency signal to the digital intermediate frequency subsystem module;
The digital intermediate frequency subsystem module is further configured to perform digital intermediate frequency processing on the received uplink radio frequency signal, generate uplink signal data, and send the uplink signal data to the baseband processing unit through the forwarding interface.
In another embodiment, with continued reference to fig. 3, in an uplink direction, the radio frequency front subsystem module performs low noise amplification on an uplink signal received from the filter through the LNA, and sends the uplink signal after low noise amplification to the transceiver subsystem module, where the uplink signal is obtained by filtering a signal transmitted by the terminal through the antenna by the filter; the Transceiver subsystem module carries out radio frequency modulation on the received low-noise amplified uplink signal through a transmitter, generates an uplink radio frequency signal and sends the uplink radio frequency signal to the digital intermediate frequency subsystem module; the digital intermediate frequency subsystem module performs digital intermediate frequency processing on the received uplink radio frequency signals, generates uplink signal data, and sends the uplink signal data to the baseband processing unit through the forwarding interface. Thereby enabling signal transmission from the terminal to the base station.
The base station radio frequency unit provided by the embodiment realizes the transmission and processing of wireless signals through the cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module.
Based on the above embodiment, in the present embodiment,
The radio frequency front sub-system module is used for carrying out radio frequency modulation on the downlink signal data after the digital intermediate frequency processing/the uplink signal after the low noise amplification based on a transceiver to generate a downlink radio frequency signal/an uplink radio frequency signal;
wherein the transceiver uses devices supporting 5925-6125MHz frequencies.
Based on the above embodiment, in the present embodiment,
The radio frequency front subsystem module is used for carrying out power amplification on the received downlink radio frequency signals through the power amplifier in the downlink direction and sending the downlink radio frequency signals after power amplification to the filter;
wherein the power amplifier uses devices supporting 5925-6125MHz frequencies.
Based on the above embodiment, in the present embodiment,
The radio frequency front subsystem module is used for carrying out low-noise amplification on the uplink signal received from the filter through the low-noise amplifier in the uplink direction and sending the uplink signal after low-noise amplification to the transceiver subsystem module;
Wherein the low noise amplifier uses devices supporting 5925-6125MHz frequencies.
It should be noted that, currently, the commercial 5G base station system is all operated in Sub-6G frequency band, that is, only supports the receiving and processing of wireless signals with frequencies below 6 GHz. The base station radio frequency unit provided by the invention adopts devices supporting 5925-6125MHz frequency for a Transceiver (transmitter), a Power Amplifier (PA) and a Low Noise Amplifier (LNA), thereby realizing the receiving and the processing of wireless signals in the 6GHz frequency band.
The base station radio frequency unit provided by the embodiment adopts devices supporting 5925-6125MHz frequency for a Transceiver (transmitter), a Power Amplifier (PA) and a Low Noise Amplifier (LNA) so as to realize the receiving and the processing of the wireless signals in the 6GHz frequency band.
Based on the above embodiment, in this embodiment, further includes:
and the clock subsystem module is respectively connected with the digital intermediate frequency subsystem module and the transceiver subsystem module and is used for providing clock signals required by operation for the base station radio frequency unit and carrying out jitter removal processing and frequency conversion processing on the clock signals.
Based on the above embodiment, in this embodiment, further includes:
and the power subsystem module is used for providing power input for the base station radio frequency unit and realizing AC-DC and DC-AC power conversion.
In particular, the above embodiments have mentioned that the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module constitute a data link channel of the whole base station radio frequency unit, whereas the power subsystem module and the clock subsystem module provide energy and heartbeat for the whole data link, respectively.
The base station radio frequency unit provided by the embodiment realizes the transmission and processing of wireless signals through the cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module, the radio frequency front subsystem module, the power subsystem module and the time Zhong Zi system module.
Based on the above embodiment, in the present embodiment,
The forward interface supports an electric port or an optical port;
wherein the electrical port supports 10GE and the optical port supports a rate greater than 10Gbps.
Specifically, the electric port can be eCPRI or CPRI, and supports 10GE; the optical ports can be, for example, QSPF, SPF+, with a supported rate greater than 10Gbps.
The base station radio frequency unit provided by the embodiment can realize signal transmission between the base station radio frequency unit and the baseband processing unit through the forward interface.
The method for processing signals by a base station radio frequency unit provided by the present invention is described below.
Fig. 4 is a flow chart of a method for processing signals by a base station radio frequency unit according to the present embodiment, as shown in fig. 4, where the base station radio frequency unit is connected to a baseband processing unit, and the base station radio frequency unit includes: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The method comprises the following steps:
Step 410, configuring a forward interface connected with a baseband processing unit through a digital intermediate frequency subsystem module, acquiring downlink signal data from the baseband processing unit through the forward interface in a downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data after the digital intermediate frequency processing to the transceiver subsystem module;
Step 420, performing radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing through a transceiver subsystem module, generating a downlink radio frequency signal, and sending the downlink radio frequency signal to the radio frequency front subsystem module;
Step 430, performing power amplification on the received downlink radio frequency signal through a radio frequency front terminal system module, and sending the downlink radio frequency signal after power amplification to a filter, so that the filter filters the downlink radio frequency signal after power amplification, and transmitting the downlink radio frequency signal after power amplification to a terminal through an antenna.
In the method for processing signals by using the base station radio frequency unit provided in this embodiment, the base station radio frequency unit is connected with the baseband processing unit, and the base station radio frequency unit includes: the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected; the digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data after the digital intermediate frequency processing to the transceiver subsystem module; the transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data after the digital intermediate frequency processing to generate a downlink radio frequency signal, and sending the downlink radio frequency signal to the radio frequency front subsystem module; the radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna. Therefore, the method for processing the signals through the base station radio frequency unit realizes the transmission and processing of the wireless signals through the cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module.
Based on the above embodiments, in this embodiment, fig. 5 is a second flowchart of a method for processing a signal by a base station radio frequency unit according to this embodiment, as shown in fig. 5, where the method further includes:
Step 510, in the uplink direction, performing low noise amplification on the uplink signal received from the filter by using a radio frequency front subsystem module, and transmitting the uplink signal after low noise amplification to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
step 520, performing radio frequency modulation on the received low noise amplified uplink signal through a transceiver subsystem module, generating an uplink radio frequency signal, and sending the uplink radio frequency signal to the digital intermediate frequency subsystem module;
and 530, performing digital intermediate frequency processing on the received uplink radio frequency signal through a digital intermediate frequency subsystem module, generating uplink signal data, and sending the uplink signal data to the baseband processing unit through the forwarding interface.
The method for processing signals through the base station radio frequency unit provided by the embodiment realizes the transmission and processing of wireless signals through cooperation of the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A base station radio frequency unit, wherein the base station radio frequency unit is connected to a baseband processing unit, the base station radio frequency unit comprising: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The digital intermediate frequency subsystem module is used for configuring a forward interface connected with the baseband processing unit, acquiring downlink signal data from the baseband processing unit through the forward interface in the downlink direction, performing digital intermediate frequency processing on the downlink signal data, and transmitting the downlink signal data subjected to the digital intermediate frequency processing to the transceiver subsystem module;
The transceiver subsystem module is used for carrying out radio frequency modulation on the received downlink signal data subjected to the digital intermediate frequency processing, generating a downlink radio frequency signal and sending the downlink radio frequency signal to the radio frequency front subsystem module;
The radio frequency front sub-system module is used for carrying out power amplification on the received downlink radio frequency signals, sending the downlink radio frequency signals subjected to power amplification to the filter, filtering the downlink radio frequency signals subjected to power amplification by the filter, and transmitting the downlink radio frequency signals subjected to power amplification to the terminal through the antenna.
2. The base station radio frequency unit of claim 1, wherein,
The radio frequency front subsystem module is further used for carrying out low-noise amplification on the uplink signal received from the filter in the uplink direction and sending the uplink signal after low-noise amplification to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
The transceiver subsystem module is further used for performing radio frequency modulation on the received low-noise amplified uplink signal to generate an uplink radio frequency signal, and sending the uplink radio frequency signal to the digital intermediate frequency subsystem module;
The digital intermediate frequency subsystem module is further configured to perform digital intermediate frequency processing on the received uplink radio frequency signal, generate uplink signal data, and send the uplink signal data to the baseband processing unit through the forwarding interface.
3. The base station radio frequency unit of claim 2, wherein,
The radio frequency front sub-system module is used for carrying out radio frequency modulation on the downlink signal data after the digital intermediate frequency processing/the uplink signal after the low noise amplification based on a transceiver to generate a downlink radio frequency signal/an uplink radio frequency signal;
wherein the transceiver uses devices supporting 5925-6125MHz frequencies.
4. The base station radio frequency unit of claim 3, wherein,
The radio frequency front subsystem module is used for carrying out power amplification on the received downlink radio frequency signals through the power amplifier in the downlink direction and sending the downlink radio frequency signals after power amplification to the filter;
wherein the power amplifier uses devices supporting 5925-6125MHz frequencies.
5. The base station radio frequency unit of claim 3, wherein,
The radio frequency front subsystem module is used for carrying out low-noise amplification on the uplink signal received from the filter through the low-noise amplifier in the uplink direction and sending the uplink signal after low-noise amplification to the transceiver subsystem module;
Wherein the low noise amplifier uses devices supporting 5925-6125MHz frequencies.
6. The base station radio frequency unit of claim 1, further comprising:
and the clock subsystem module is respectively connected with the digital intermediate frequency subsystem module and the transceiver subsystem module and is used for providing clock signals required by operation for the base station radio frequency unit and carrying out jitter removal processing and frequency conversion processing on the clock signals.
7. The base station radio frequency unit of claim 1, further comprising:
and the power subsystem module is used for providing power input for the base station radio frequency unit and realizing AC-DC and DC-AC power conversion.
8. The base station radio frequency unit of claim 1, wherein,
The forward interface supports an electric port or an optical port;
wherein the electrical port supports 10GE and the optical port supports a rate greater than 10Gbps.
9. A method of processing signals by a base station radio frequency unit, the base station radio frequency unit being coupled to a baseband processing unit, the base station radio frequency unit comprising: the system comprises a digital intermediate frequency subsystem module, a transceiver subsystem module and a radio frequency front subsystem module, wherein the digital intermediate frequency subsystem module, the transceiver subsystem module and the radio frequency front subsystem module are sequentially connected;
The method comprises the following steps:
A forward interface connected with a baseband processing unit is configured through a digital intermediate frequency subsystem module, downlink signal data is acquired from the baseband processing unit through the forward interface in the downlink direction, the downlink signal data is subjected to digital intermediate frequency processing, and the downlink signal data after the digital intermediate frequency processing is sent to the transceiver subsystem module;
the received downlink signal data after the digital intermediate frequency processing is subjected to radio frequency modulation through a transceiver subsystem module, a downlink radio frequency signal is generated, and the downlink radio frequency signal is sent to the radio frequency front subsystem module;
And carrying out power amplification on the received downlink radio frequency signals through a radio frequency front sub-system module, and sending the downlink radio frequency signals subjected to power amplification to a filter, so that the filter filters the downlink radio frequency signals subjected to power amplification, and transmitting the downlink radio frequency signals subjected to power amplification to a terminal through an antenna.
10. The method of processing signals by a base station radio frequency unit of claim 9, further comprising:
in the uplink direction, the uplink signal received from the filter is amplified in a low noise mode through the radio frequency front subsystem module, and the uplink signal amplified in a low noise mode is sent to the transceiver subsystem module; the uplink signal is obtained by filtering a signal transmitted by the terminal through an antenna by the filter;
the received low-noise amplified uplink signal is subjected to radio frequency modulation through a transceiver subsystem module to generate an uplink radio frequency signal, and the uplink radio frequency signal is sent to the digital intermediate frequency subsystem module;
And carrying out digital intermediate frequency processing on the received uplink radio frequency signals through a digital intermediate frequency subsystem module to generate uplink signal data, and sending the uplink signal data to the baseband processing unit through the forwarding interface.
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