WO2021244508A1

WO2021244508A1 - Communication device and communication system

Info

Publication number: WO2021244508A1
Application number: PCT/CN2021/097602
Authority: WO
Inventors: 席娟梅
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-06-04
Filing date: 2021-06-01
Publication date: 2021-12-09
Also published as: CN113839686A

Abstract

Embodiments of the present invention relate to the technical field of communications, and provide a communication device and a communication system. The communication device comprises an indoor unit, an outdoor unit, and an antenna. The indoor unit is connected to the outdoor unit, and the outdoor unit is connected to the antenna. The outdoor unit comprises a switch unit and at least two signal processing units. Any one signal processing unit in the at least two signal processing units is configured to process a group of transmit/receive intermediate frequency signals, and the transmit/receive intermediate frequencies of the signals processed by the at least two signal processing units are different. The switch unit is configured to control one specified signal processing unit in the at least two signal processing units to process a specified transmit/receive intermediate frequency signal corresponding to the specified signal processing unit.

Description

Communication equipment and communication system

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 202010501037.8 on June 4, 2020, and the entire content of this application is incorporated into this application by reference.

Technical field

The embodiments of the present disclosure relate to the field of communication technology.

Background technique

Digital microwave transmits data signals wirelessly. The split digital microwave system is composed of indoor unit (IDU) and outdoor unit (ODU). Fig. 1 is a schematic diagram of the transmission process of microwave signals in a split digital microwave system in the related art. As shown in Figure 1, the IDU and ODU are connected by a radio frequency cable. One IDU will transmit an intermediate frequency (TX IF) signal to an ODU. After the ODU processes the TX IF signal, it is transmitted to another ODU through an antenna; After an ODU receives the signal, it processes the signal and transmits the RX IF signal to another IDU. The other IDU demodulates the received signal, thus realizing a split digital microwave system Transmission of microwave signals.

Summary of the invention

One aspect of the embodiments of the present disclosure provides a communication device, including: an indoor unit, an outdoor unit, and an antenna, wherein: the indoor unit is connected to the outdoor unit, and the outdoor unit is connected to the antenna; the outdoor unit includes a switch unit and at least two signal processors Unit; wherein, any one of the at least two signal processing units is configured to process a set of transceiving intermediate frequency signals, and the signals processed by the at least two signal processing units have different transceiving intermediate frequencies; and, the switch unit is It is configured to control one designated signal processing unit of the at least two signal processing units to process designated transceiving intermediate frequency signals corresponding to the designated signal processing unit.

Another aspect of the embodiments of the present disclosure provides a communication system including the above-mentioned communication device.

Description of the drawings

Fig. 1 is a schematic diagram of the transmission process of microwave signals in a split digital microwave system in the related art.

Fig. 2 is a structural block diagram of a communication device provided by an embodiment of the present disclosure.

Fig. 3 is a structural block diagram of a communication system provided by an embodiment of the present disclosure.

FIG. 4 is a schematic structural diagram of a signal processing unit provided by an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure.

detailed description

Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings and in conjunction with the embodiments.

It should be noted that the terms “first” and “second” in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

The digital microwave system communication equipment in the related art only supports processing a set of transceiving intermediate frequency signals, which results in the digital microwave communication equipment being unable to meet the requirements of different application scenarios. In view of this, the embodiments of the present disclosure provide a communication device and a communication system to at least solve the problem that the digital microwave system communication device in the related art only supports processing a set of transceived intermediate frequency signals, resulting in that the digital microwave communication device cannot meet the requirements of different application scenarios. The question of demand.

FIG. 2 is a structural block diagram of a communication device provided by an embodiment of the present disclosure. As shown in FIG. 2, the communication device may include: an indoor unit 22, an outdoor unit 24, and an antenna 26. The indoor unit 22 is connected to the outdoor unit 24, and the outdoor unit 24 is connected to the antenna 26.

The outdoor unit 24 may include: a switch unit 30 and at least two signal processing units 28. Any one of the at least two signal processing units 28 is configured to process a group of transceiving intermediate frequency signals, and the signals processed by different signal processing units 28 have different transceiving intermediate frequencies. The switch unit 30 is configured to control one designated signal processing unit 28 of the at least two signal processing units 28 to process the designated transceiving intermediate frequency signal corresponding to the designated signal processing unit 28.

According to the embodiment provided by the present disclosure, the outdoor unit 24 includes a switch unit 30 and at least two signal processing units 28, and one signal processing unit 28 is configured to process a group of transceiving intermediate frequency signals, and the signals processed by different signal processing units 28 The switching unit 30 is configured to control one of the at least two signal processing units 28 to process the designated transceiving intermediate frequency signal corresponding to the designated signal processing unit 28; therefore, it can solve the problem of digital Microwave system communication equipment only supports the processing of a set of transceiver intermediate frequency signals, which leads to the problem that digital microwave communication equipment cannot meet the needs of different application scenarios, and achieves the technical effect of improving the versatility and flexibility of communication equipment.

In an exemplary embodiment, only one signal processing unit 28 can perform signal processing operations at the same time.

In an exemplary implementation, the "a group of transceiving intermediate frequency signals" in this embodiment refers to transmitting an intermediate frequency signal and/or receiving an intermediate frequency signal.

In an exemplary embodiment, the communication device in this embodiment may further include: a control unit configured to send a control signal to the switch unit 30 to control the opening and closing of the switch unit 30.

In an exemplary embodiment, the control unit may be a control chip such as a CPU, and the control unit may be provided in the outdoor unit 24.

In an exemplary embodiment, each signal processing unit 28 of the at least two signal processing units 28 may include: a filtering unit, a transmission signal processing unit, a reception signal processing unit, and a signal transceiving unit.

In an exemplary embodiment, the communication device may include multiple signal processing units 28 such as two signal processing units 28, three signal processing units 28, or four signal processing units 28, wherein each signal processing unit 28 Both may include a filtering unit, a transmitting signal processing unit, a receiving signal processing unit, and a signal transceiving unit.

In an exemplary embodiment, the at least two signal processing units 28 may respectively include different filtering units, and share at least one of the following: a transmitting signal processing unit, a receiving signal processing unit, or a signal transceiving unit.

The first end of the filter unit is connected to the first end of the indoor unit 22, and is configured to select the received signal of the intermediate frequency and select the transmit signal of the transmit intermediate frequency; the first end of the transmit signal processing unit and the first end of the receive signal processing unit Are respectively connected to the second end of the filter unit, the transmission signal processing unit is configured to process the transmission signal, and the reception signal processing unit is configured to process the reception signal; the first end of the signal transceiving unit is respectively connected to the second end of the transmission signal processing unit, The second end of the receiving signal processing unit is connected, and the second end of the signal transceiving unit is connected to the antenna 26. The signal transceiving unit is configured to receive the received signal through the antenna 26 and send the transmitted signal through the antenna 26.

In an exemplary embodiment, the switch unit 30 includes a first switch. The first end of the first switch is connected to the first end of the indoor unit 22, and the second end of the first switch is respectively connected to the first end of each of the at least two signal processing units 28. The first switch It is configured to control one designated signal processing unit 28 of the at least two signal processing units 28 to process the designated transceiving intermediate frequency signal corresponding to the designated signal processing unit 28.

In an exemplary embodiment, the communication device may include multiple signal processing units 28 such as two signal processing units 28, three signal processing units 28, or four signal processing units 28. Each signal processing unit 28 includes a filtering unit, a transmitting signal processing unit, a receiving signal processing unit, and a signal transceiving unit. Each signal processing unit 28 is connected to the first switch. Exemplarily, the first end of the signal processing unit 28 may be the first end of the filter unit included in the signal processing unit 28, and the first switch is connected to the filter unit in each signal processing unit 28, that is, the first switch Connect with two, three, four or more filter units.

In an exemplary embodiment, when different signal processing units 28 respectively include different filtering units, and different signal processing units 28 share the transmission signal processing unit, the reception signal processing unit, and the signal transceiving unit, the switch unit 30 In addition to the above-mentioned first switch, it also includes: a first common switch and a second common switch. The first end of the first common switch is respectively connected to the second end of each filter unit, and the second end of the first common switch is connected to the first end of the transmission signal processing unit. The first end of the second common switch is connected to the second end of each filter unit, and the second end of the second common switch is connected to the first end of the received signal processing unit. The first common switch is configured to control the designated filtering unit to output the transmission signal to be processed to the transmission signal processing unit, and the second common switch is configured to control the designated filtering unit to receive the processed reception signal sent by the reception signal processing unit, and to designate filtering The unit is a filter unit among different filter units.

In an exemplary implementation, the number of filter units in the communication device provided in this embodiment may be two or more, such as three, four, five, and so on. A filter unit can choose to receive the received signal of the intermediate frequency and choose to transmit the transmitted signal of the intermediate frequency.

In an exemplary embodiment, the transmission signal processing unit may include: a transmission gain controller, a transmission intermediate frequency up-converter, a first variable gain amplifier, a microwave up-converter, and a power amplifier connected in sequence. The power amplifier is connected to the signal transceiver unit, the transmitting intermediate frequency up-converter is also connected to the intermediate frequency transmitting local oscillator, and the microwave up-converter is also connected to the microwave transmitting local oscillator.

In an exemplary embodiment, the received signal processing unit may include: a low noise amplifier, a microwave down converter, a second variable gain amplifier, a receiving intermediate frequency down converter, and a receiving gain controller connected in sequence. The low noise amplifier is connected to the signal transceiver unit, the receiving intermediate frequency down converter is also connected to the intermediate frequency receiving local oscillator, and the microwave down converter is also connected to the microwave receiving local oscillator.

In an exemplary embodiment, the maximum bandwidths supported by different signal processing units 28 are different. The frequencies of the signals processed by different signal processing units 28 do not cause significant interference with each other.

In an exemplary embodiment, the at least two signal processing units 28 may include: a first signal processing unit and a second signal processing unit. The first signal processing unit is configured to process signals with an intermediate frequency of 140M and send signals with an intermediate frequency of 350M. The second signal processing unit is configured to process a signal with an intermediate frequency of 210M and a signal with an intermediate frequency of 630M.

The embodiment of the present disclosure also provides a communication system, and FIG. 3 is a structural block diagram of the communication system provided by the embodiment of the disclosure. As shown in FIG. 3, the communication system 31 may include the communication device 33 in any one of the foregoing embodiments, and details are not described herein again.

The embodiment of the present disclosure relates to the field of communication, and specifically relates to an intermediate frequency frequency of a split digital microwave system communication device. The communication device in this embodiment can achieve arbitrary selection between two sets of intermediate frequency frequencies.

Exemplarily, the communication device provided by the embodiment of the present disclosure includes an indoor unit and an outdoor unit. The indoor unit is connected to the outdoor unit, and the outdoor unit is connected to the antenna. The outdoor unit includes: a switch unit, a control unit, and at least two signal processing units. One signal processing unit is configured to process a group of signals with transceiving intermediate frequencies, and the signals processed by different signal processing units have different transceiving intermediate frequencies; the control unit is configured to send control signals to the switch unit to control the signals in the at least two signal processing units. A designated signal processing unit is connected between the indoor unit and the antenna. The signal processing unit is configured to process the receiving and transmitting signals between the indoor unit and the antenna.

Exemplarily, the switch unit may include a first switch. The first switch is provided between the first end of the indoor unit and the first end of each of the at least two signal processing units, and the first switch is configured to receive the control signal sent by the control unit, so that at least One of the two signal processing units specifies that the signal processing unit is connected between the indoor unit and the antenna.

Through the first switch, the controller can control which of the at least two signal processing units is connected to the indoor unit and the antenna for signal processing. This improves the flexibility of the communication device and enables the communication device to handle different groups. The IF signal for sending and receiving is suitable for different application scenarios. In addition, since different signal processing units can process different groups of transceiving intermediate frequency signals, and different groups of transceiving intermediate frequency signals can correspond to different bandwidths, the communication device provided in this embodiment can also support different bandwidths.

Exemplarily, the IDU and the N-type connector of the ODU are connected by a radio frequency cable.

Exemplarily, FIG. 4 is a schematic structural diagram of a signal processing unit provided by an embodiment of the present disclosure. As shown in FIG. 4, each signal processing unit may include the following structure.

IDU's transmit signal enters the ODU through the N-type connector, and then enters the transmission automatic gain control 12 through the (Multiplexer, MUX) filter 1 to realize the input intermediate frequency power control. The transmit intermediate frequency upconverter 13 then converts the intermediate frequency signal to the transmit second intermediate frequency ( Generally 2G-4G), the output power is controlled by the variable gain amplifier 14, and the second intermediate frequency signal is transmitted into the microwave up-converter 15 to be converted to microwave frequency. The microwave signal is amplified by the power amplifier 16 and then passed through the microwave duplexer. The device 17 transmits to the antenna end.

The microwave signal received at the antenna end is input to the low-noise amplifier 18 through the microwave duplexer 17. The low-noise amplifier 18 transmits the microwave signal to the microwave down-converter 19, and the microwave down-converter 19 converts the microwave signal to the second intermediate frequency. (Generally 1G-3G), receive the second intermediate frequency signal through the variable gain amplifier 20 to realize the receive power control, receive the second intermediate frequency signal into the receive intermediate frequency down converter 21, convert the received second intermediate frequency signal to the receive intermediate frequency, and receive the intermediate frequency The signal is further controlled by the receiving automatic gain control 22, and the received intermediate frequency signal enters the MUX filter 1 and is transmitted to the IDU through the N-type connector 11. Exemplarily, there may be four local oscillators to provide the local oscillator signals to the four mixers, specifically: the intermediate frequency transmitting local oscillator 3 provides the local oscillator signal to the transmitting intermediate frequency up-converter 13, and the microwave transmitting local oscillator 4 provides the microwave to the microwave. The frequency converter 15 provides a local oscillator signal, the microwave receiving local oscillator 5 provides a local oscillator signal to the microwave down-converter 19, and the intermediate frequency receiving local oscillator 6 provides a local oscillator signal to the receiving intermediate frequency down-converter 21.

The embodiment of the present disclosure also provides a communication device. FIG. 5 is a schematic structural diagram of the communication device provided by the embodiment of the present disclosure. As shown in FIG. 5, the communication device may include an indoor unit IDU 10 and an outdoor unit. In the outdoor unit, 3 switches are added to the input and output ends of the MUX filter, and the MUX filter 1 and MUX filter 2 are selected to switch according to the different intermediate frequencies input by the IDU 10.

According to the IDU's transmitting and receiving intermediate frequency frequency, switch 7, switch 8 and switch 9 can choose to switch to MUX filter 1 or MUX filter 2. The switching of these three switches is the same. If you switch to MUX filter 1, all All switch to MUX filter 1, if switch to MUX filter 2, then all switch to MUX filter 2. If the intermediate frequency supported by IDU is 350M/140M, all three switches are switched to MUX filter 1. If the intermediate frequency supported by IDU is 630M/210M, all three switches are switched to MUX filter 2.

When the IDU transmission frequency is 350M, switch 7 is switched to MUX filter 1, see Figure 5. The 350M intermediate frequency signal enters the switch 8 through the 350M transmission channel of MUX filter 1. At this time, the switch 8 is switched to MUX filter 1, and the intermediate frequency is transmitted. The signal goes through the transmission automatic gain control 12 to achieve input power control, and then enters the transmission intermediate frequency up-converter 13, which converts the 350M transmission intermediate frequency signal to the transmission second intermediate frequency (usually 2G-4G), and then passes the variable gain amplifier 14 to the output power To achieve control, the second intermediate frequency signal is transmitted into the microwave up-converter 15 to be converted to a microwave frequency. The microwave signal is amplified by the power amplifier 16 and then transmitted to the antenna end through the microwave duplexer 17. The microwave signal received at the antenna end is input to the low-noise amplifier 18 through the microwave duplexer 17. The low-noise amplifier 18 transmits the microwave signal to the microwave down-converter 19, and the microwave down-converter 19 converts the microwave signal to the second intermediate frequency. (Generally 1G-3G), the received second intermediate frequency signal is controlled by the variable gain amplifier 20, and the received second intermediate frequency signal enters the receiving intermediate frequency downconverter 21 to convert the signal to 140M intermediate frequency, and the 140M intermediate frequency signal is automatically received by the receiver The gain control 22 further realizes the received power control. The 140M signal is received into the switch 9, and the switch 9 selects the MUX filter 1, and the 140M received signal enters the switch 7 through the MUX filter 1, and then is sent to the IDU through the N-type connector 11.

When the IDU transmission frequency is 630M, switch 7 is switched to MUX filter 2, see Figure 3. The 630M intermediate frequency signal enters switch 8 through the 630M transmission channel of MUX filter 2, and switch 8 is switched to MUX filter 2, 630M transmission The intermediate frequency signal passes through the automatic gain control 12 of the transmission to realize the input power control, and then enters the transmission intermediate frequency up-converter 13, which converts the 630M transmission intermediate frequency signal to the transmission second intermediate frequency (usually 2G-4G), and then outputs it through the variable gain amplifier 14 The power is controlled, and the second intermediate frequency signal is transmitted into the microwave up-converter 15 to be converted to a microwave frequency. The microwave signal is amplified by the power amplifier 16, and then transmitted to the antenna end through the microwave duplexer 17. The microwave signal received at the antenna end is input to the low-noise amplifier 18 through the microwave duplexer 17. The low-noise amplifier 18 transmits the microwave signal to the microwave down-converter 19, and the microwave down-converter 19 converts the microwave signal to the second intermediate frequency. (Generally 1G-3G), the received second intermediate frequency signal is controlled by the variable gain amplifier 20 to realize the receive power control, and the received second intermediate frequency signal enters the receiving intermediate frequency downconverter 21 to convert the signal to 210M intermediate frequency, and the 210M intermediate frequency signal is automatically received by the receiver The gain control 22 further realizes the receiving power control. The 210M signal is received and enters the switch 9, the switch 9 selects the MUX filter 2, and the 210M received signal enters the switch 7 through the MUX filter 2, and then is sent to the IDU through the N-type connector 11.

There are four local oscillators to provide the local oscillator signals to the four mixers, specifically: the IF transmitting local oscillator 3 provides the local oscillator signal to the transmitting IF upconverter 13, and the microwave transmitting local oscillator 4 provides the local oscillator to the microwave upconverter 15. The microwave receiving local oscillator 5 provides a local oscillator signal to the microwave down-converter 19, and the intermediate frequency receiving local oscillator 6 provides a local oscillator signal to the receiving intermediate frequency down-converter 21. For transmission, when the transmission IF frequency is 350M and 630M, the frequency of the IF transmission local oscillator 3 is changed to ensure that the output frequency of the 350M and 630M IF frequency entering the transmission IF upconverter 13 is the same, for 350M and 630M When 630M is input, the frequency of the microwave transmitting local oscillator 4 is the same. For reception, when the receiving intermediate frequency frequency is 140M and 210M, the frequency of the microwave receiving local oscillator 5 is the same to ensure that the output frequency of the microwave downconverter 19 is the same, and the frequency of the intermediate frequency receiving local oscillator 6 changes. To ensure that the output frequency of the receiving intermediate frequency down converter 21 is 140M and 210M respectively.

Illustratively, the embodiments of the present disclosure are applicable to microwave point-to-point communication equipment, and specifically to 6G-42G microwave outdoor unit (ODU) products. When the IDU transmission frequency is 350M, switch 7 is switched to MUX filter 1. The 350M intermediate frequency signal passes through the 350M transmission channel of MUX filter 1 and enters switch 8. At this time, switch 8 is switched to MUX filter 1, and the transmitted intermediate frequency signal passes through the transmission channel. , Transmitted to the antenna end through the microwave duplexer 17. The microwave signal received by the antenna end enters the receiving channel through the microwave duplexer 17, and the signal is converted to 140M intermediate frequency. The 140M signal is received and enters the switch 9, the switch 9 selects MUX filter 1, and the 140M signal passes through the MUX filter 1 and enters the switch 7. , And then sent to IDU through the N-type connector 11.

Exemplarily, when the IDU transmission frequency is 630M, switch 7 is switched to MUX filter 2, and the 630M intermediate frequency signal enters the switch 8 through the 630M transmission channel of MUX filter 2. At this time, the switch 8 is switched to MUX filter 2, and the intermediate frequency is transmitted. The signal passes through the transmission channel and is transmitted to the antenna end through the microwave duplexer 17. The microwave signal received at the antenna end enters the receiving channel through the microwave duplexer 17, the signal is converted to an intermediate frequency of 210M, and the 210M signal is received and enters the switch 9, the switch 9 selects MUX filter 2, and the 210M signal passes through the MUX filter 2 and enters the switch 7. , And then sent to IDU through the N-type connector 11.

As the requirement for ODU to support BW (bandwidth) = 224M bandwidth is proposed, the 350M and 140M IFs will not be able to meet the requirement of BW = 224M. The reason is that the system has certain requirements for MUX filter 1’s 350M transmission and 140M reception. When the IF frequency of 350M transmission and 140M reception is in the BW=224M bandwidth, the transmission and reception signal frequencies partially overlap, which cannot be achieved by the MUX filter. The requirements for receiving and sending suppression. Therefore, the maximum bandwidth supported by the 350M and 140M IF is BW=112M, which cannot support the bandwidth requirement of BW=240M. Therefore, it is necessary to re-propose a set of intermediate frequencies, which can support a bandwidth of BW=224M while meeting the requirements of transmission and reception suppression.

The embodiment of the present disclosure proposes a new set of intermediate frequency frequencies, the transmitting intermediate frequency is 630M, and the receiving intermediate frequency is 210M. It can meet the requirement of BW=224M bandwidth. It solves the problem that the traditional intermediate frequency cannot support the BW=224M bandwidth.

According to the embodiment of the present disclosure, it is possible to freely choose between 630M/210M and 350M/140M intermediate frequencies. It takes into account that the ODU can support the traditional intermediate frequency 350M/140M IDU of the old version, and it can also support the BW=224M large bandwidth 630M/ 210M new version IDU.

The foregoing descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the principles of this disclosure shall be included in the protection scope of this disclosure.

Claims

A communication device includes an indoor unit, an outdoor unit, and an antenna, wherein:

The indoor unit is connected to the outdoor unit, and the outdoor unit is connected to the antenna;

The outdoor unit includes a switch unit and at least two signal processing units;

Wherein, any one of the at least two signal processing units, the signal processing unit is configured to process a group of transceiving intermediate frequency signals, and the signals processed by the at least two signal processing units have different transceiving intermediate frequencies; and

The switch unit is configured to control a designated signal processing unit of the at least two signal processing units to process a designated transceiving intermediate frequency signal corresponding to the designated signal processing unit.
The communication device according to claim 1, further comprising:

The control unit is configured to send a control signal to the switch unit to control the opening and closing of the switch unit.
The communication device according to claim 1, wherein:

The signal processing unit includes: a filtering unit, a transmitting signal processing unit, a receiving signal processing unit, and a signal transceiving unit; or

The signal processing unit includes a filtering unit, and the at least two signal processing units share at least one of the following: a transmitting signal processing unit, a receiving signal processing unit, or a signal transceiving unit;

Wherein, the first end of the filtering unit is connected to the first end of the indoor unit, and is configured to selectively receive the received signal of the intermediate frequency and selectively transmit the transmitted signal of the intermediate frequency;

The first end of the transmission signal processing unit and the first end of the reception signal processing unit are respectively connected to the second end of the filtering unit, the transmission signal processing unit is configured to process the transmission signal, the The received signal processing unit is configured to process the received signal;

The first end of the signal transceiving unit is connected to the second end of the transmitting signal processing unit and the second end of the receiving signal processing unit respectively, and the second end of the signal transceiving unit is connected to the antenna, the The signal transceiving unit is configured to receive the reception signal through the antenna and transmit the transmission signal through the antenna.
The communication device according to claim 3, wherein the switch unit comprises: a first switch, wherein:

The first end of the first switch is connected to the first end of the indoor unit, and the second end of the first switch is respectively connected to the first end of each of the at least two signal processing units. One end is connected, and the first switch is configured to control the designated signal processing unit of the at least two signal processing units to process designated transceiving intermediate frequency signals corresponding to the designated signal processing unit.
The communication device according to claim 3 or 4, wherein, in the case where the signal processing unit includes a filtering unit, and the at least two signal processing units share a transmission signal processing unit, a reception signal processing unit, and a signal transceiving unit , The switch unit further includes: a first common switch and a second common switch;

Wherein, the first end of the first common switch is connected to the second end of each of the at least two signal processing units, and the second end of the first common switch is connected to the transmitting unit. The first end of the signal processing unit is connected;

The first end of the second common switch is connected to the second end of each filter unit, and the second end of the second common switch is connected to the first end of the received signal processing unit;

The first common switch is configured to control the designated filter unit to output the transmit signal to be processed to the transmit signal processing unit, and the second common switch is configured to control the designated filter unit to receive the signal to be processed by the received signal processing unit. For the sent processed received signal, the designated filtering unit is a filtering unit in one of the at least two signal processing units.
The communication device according to claim 3, wherein the transmission signal processing unit comprises: a transmission gain controller, a transmission intermediate frequency up-converter, a first variable gain amplifier, a microwave up-converter, and a power Amplifier

Wherein, the power amplifier is connected to the signal transceiving unit, the transmitting intermediate frequency up-converter is also connected to an intermediate frequency transmitting local oscillator, and the microwave up-converter is also connected to a microwave transmitting local oscillator.
The communication device according to claim 3 or 6, wherein the received signal processing unit comprises: a low noise amplifier, a microwave down-converter, a second variable gain amplifier, a receiving intermediate frequency down-converter connected in sequence, and Receive gain controller;

Wherein, the low noise amplifier is connected to the signal transceiving unit, the receiving intermediate frequency down-converter is also connected to an intermediate frequency receiving local oscillator, and the microwave down-converter is also connected to a microwave receiving local oscillator.
The communication device according to any one of claims 1 to 4, wherein the maximum bandwidths supported by the at least two signal processing units are different.
The communication device according to any one of claims 1 to 4, wherein the at least two signal processing units comprise: a first signal processing unit and a second signal processing unit;

Wherein, the first signal processing unit is configured to process signals with an intermediate frequency of 140M and a signal with an intermediate frequency of 350M; and, the second signal processing unit is configured to process signals with an intermediate frequency of 210M and a signal with an intermediate frequency of 630M.
A communication system, comprising: the communication device according to any one of claims 1-9.