Indoor distribution system

Abstract

The application discloses an indoor distribution system and relates to the technical field of wireless communication. The indoor distribution system comprises a first antenna, an isolator, at least one dual-mode signal amplifier and at least one second antenna, wherein each dual-mode signal amplifier in the at least one dual-mode signal amplifier and each second antenna in the at least one second antenna are in one-to-one correspondence. The first antenna is used for receiving a signal sent by a base station and sending the signal from the base station to the isolator. The signal from the base station comprises a first type of network signal or a second type of network signal. The isolator is used for receiving the signal from the first antenna and transmitting the signal from the first antenna to each dual-mode signal amplifier in the at least one dual-mode signal amplifier respectively. The dual-mode signal amplifier is used for receiving the signal from the isolator, performing amplification processing on the signal from the isolator to obtain a processed signal from the isolator, and sending the processed signal from the isolator to the second antenna corresponding to the dual-mode signal amplifier. The second antenna is used for receiving the signal from the dual-mode signal amplifier corresponding to the second antenna and sending the signal from the dual-mode signal amplifier corresponding to the second antenna to a terminal. The signal from the base station comprises the first type of network signal or the second type of network signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, in particular to an indoor distribution system. BACKGROUND

[0002] The current wireless network is essential in people's life, however, in the scene where the wireless network signal is difficult to cover (such as basement, high-rise building, ship, etc.), signal amplifier needs to be used to amplify the signal to ensure the normal transmission of the wireless network signal. Generally, the signal amplifier mainly includes an amplifier main body, a protection box and an antenna. The signal amplifier main body is provided with a signal enhancement part to amplify the wireless signal, which can play a role of signal amplification.

[0003] With the development of 5G signal network construction, the situation of 4th Generation Mobile Communication Technology (4G) signal and 5th Generation Mobile Communication Technology (5G) signal co-coverage is becoming more and more common, and the current mature signal amplifier only amplifies the single standard network, that is, it can only amplify the 4G signal or the 5G signal alone. This single standard network signal amplification cannot cope with more and more complex network situations. And to achieve simultaneous amplification of 4G signal and 5G signal, two different devices need to be installed, which occupies too much space and has high cost. SUMMARY

[0004] The technical problem to be solved by the present application is that the single standard network signal amplification cannot cope with more and more complex network situations, and to achieve simultaneous amplification of 4G signal and 5G signal, two different devices need to be installed, which occupies too much space and has high cost.

[0005] In view of the above shortcomings of the prior art, the following scheme is provided:

[0006] The application provides an indoor distribution system, which comprises a first antenna, an isolator, at least one dual-mode signal amplifier and at least one second antenna, wherein each dual-mode signal amplifier in the at least one dual-mode signal amplifier and each second antenna in the at least one second antenna are in one-to-one correspondence. The first antenna is used for receiving a signal transmitted by a base station and transmitting the signal from the base station to the isolator. The signal from the base station comprises a first type of network signal or a second type of network signal. The isolator is used for receiving the signal from the first antenna and transmitting the signal from the first antenna to each dual-mode signal amplifier in the at least one dual-mode signal amplifier respectively. The dual-mode signal amplifier is used for receiving the signal from the isolator, amplifying the signal from the isolator to obtain a processed signal from the isolator, and transmitting the processed signal from the isolator to the second antenna corresponding to the dual-mode signal amplifier. The second antenna is used for receiving the signal from the dual-mode signal amplifier corresponding to the second antenna and transmitting the signal from the dual-mode signal amplifier corresponding to the second antenna to a terminal. The signal from the base station comprises the first type of network signal or the second type of network signal.

[0007] Optionally, the dual-mode signal amplifier comprises a first combiner, a first communication link, a second communication link and a second combiner. The first combiner is used for receiving the signal from the isolator and transmitting the signal from the isolator to the first communication link and the second communication link respectively. The first communication link is connected between the first combiner and the second combiner, used for receiving the signal from the first combiner, amplifying the first type of network signal in the signal from the first combiner to obtain a first processed first type of network signal, and transmitting the first processed first type of network signal to the second combiner. The second communication link is connected in parallel with the first communication link, used for receiving the signal from the first combiner, amplifying the second type of network signal in the signal from the first combiner to obtain a first processed second type of network signal, and transmitting the first processed second type of network signal to the second combiner. The second combiner is used for receiving the first processed first type of network signal from the first communication link and transmitting the first processed first type of network signal to the second antenna corresponding to the dual-mode signal amplifier, and receiving the first processed second type of network signal from the second communication link and transmitting the first processed second type of network signal to the second antenna corresponding to the dual-mode signal amplifier.

[0008] Optionally, the first communication link comprises a first sub-chain and a control module. The first sub-chain is used for receiving the signal from the first combiner, processing the first type of network signal in the signal from the first combiner according to a first control signal from the control module to obtain a first processed first type of network signal, and transmitting the first processed first type of network signal to the second combiner. The control module is connected with the first sub-chain and used for transmitting the first control signal to the first sub-chain.

[0009] Optionally, the first sub-link includes a first low noise amplifier, a first gain control module, a first driving stage and a first radio frequency power amplifier connected in series. The first low noise amplifier is configured to receive the first type of network signal in the signal from the first combiner, amplify the first type of network signal in the signal from the first combiner and obtain a first primary amplified signal. The first gain control module is configured to determine the intensity value of the first primary amplified signal and send the intensity value of the first primary amplified signal to the control module. The control module is configured to determine whether the intensity value of the first primary amplified signal meets a first preset condition. If the intensity value of the first primary amplified signal meets the first preset condition, the control module does not send a first control signal to the first radio frequency power amplifier, so that the first radio frequency power amplifier does not amplify the first primary amplified signal. If the intensity value of the first primary amplified signal does not meet the first preset condition, the control module sends the first control signal to the first radio frequency power amplifier. The first control signal is configured to control the first radio frequency power amplifier to amplify the first primary amplified signal, so that the signal amplified by the first radio frequency power amplifier meets the first preset condition. The first driving stage is configured to transmit the first primary amplified signal to the first radio frequency power amplifier. The first radio frequency power amplifier is configured to amplify or not amplify the first primary amplified signal under the control of the control module, and obtain a first processed first type of network signal.

[0010] Optionally, the second antenna is further configured to receive a signal sent by a terminal and send the signal from the terminal to a dual-mode signal amplifier corresponding to the second antenna. The dual-mode signal amplifier is further configured to receive the signal from the second antenna corresponding to the dual-mode signal amplifier, amplify the signal from the second antenna corresponding to the dual-mode signal amplifier, obtain a processed signal from the second antenna corresponding to the dual-mode signal amplifier, and send the processed signal from the second antenna corresponding to the dual-mode signal amplifier to an isolator. The isolator is further configured to receive signals from each of the at least one dual-mode signal amplifier and transmit the signals from each of the at least one dual-mode signal amplifier to a first antenna. The first antenna is further configured to receive the signal from the isolator and send the signal from the isolator to a base station. The signal from the terminal includes the first type of network signal and the second type of network signal.

[0011] Optionally, the second combiner is further configured to receive signals from a second antenna corresponding to the dual-mode signal amplifier, and transmit the signals from the second antenna corresponding to the dual-mode signal amplifier to the first communication link and the second communication link, respectively. The first communication link is further configured to receive the signals from the second combiner, amplify the first type of network signals in the signals from the second combiner to obtain second processed first type of network signals, and send the second processed first type of network signals to the first combiner. The second communication link is further configured to receive the signals from the second combiner, amplify the second type of network signals in the signals from the second combiner to obtain second processed second type of network signals, and send the second processed second type of network signals to the first combiner. The first combiner is further configured to receive the second processed first type of network signals from the first communication link and send the second processed first type of network signals to the isolator, and receive the second processed second type of network signals from the second communication link and send the second processed second type of network signals to the isolator.

[0012] Optionally, the first communication link further comprises a second sub-link. The second sub-link is configured to receive the signals from the second combiner, process the first type of network signals in the signals from the second combiner according to a second control signal from the control module to obtain second processed first type of network signals, and send the second processed first type of network signals to the first combiner. The control module is further connected to the second sub-link and configured to send the second control signal to the second sub-link.

[0013] Optionally, the second sub-link includes a second low noise amplifier, a second gain control module, a second driving stage and a second radio frequency power amplifier connected in series. The second low noise amplifier is configured to receive the first type network signal in the signal from the second combiner, amplify the first type network signal in the signal from the second combiner and obtain a second primary amplified signal. The second gain control module is configured to determine the intensity value of the second primary amplified signal and send the intensity value of the second primary amplified signal to the control module. The control module is configured to determine whether the intensity value of the second primary amplified signal meets a second preset condition. If the intensity value of the second primary amplified signal meets the second preset condition, the control module does not send a second control signal to the second radio frequency power amplifier, so that the second radio frequency power amplifier does not amplify the second primary amplified signal. If the intensity value of the second primary amplified signal does not meet the second preset condition, the control module sends the second control signal to the second radio frequency power amplifier. The second control signal is configured to control the second radio frequency power amplifier to amplify the second primary amplified signal, so that the signal amplified by the second radio frequency power amplifier meets the second preset condition. The second driving stage is configured to transmit the second primary amplified signal to the second radio frequency power amplifier. The second radio frequency power amplifier is configured to amplify or not amplify the second primary amplified signal under the control of the control module, and obtain a second processed first type network signal.

[0014] Optionally, the first communication link further includes a first circulator and a second circulator. The first circulator is connected with the first low noise amplifier, the first combiner and the second radio frequency power amplifier respectively, configured to receive the signal from the first combiner, transmit the signal from the first combiner to the first low noise amplifier, and receive the second processed first type network signal from the second radio frequency power amplifier and send the second processed first type network signal to the first combiner. The first sub-link includes a first low noise amplifier, a first gain control module, a first driving stage and a first radio frequency power amplifier connected in series. The second circulator is connected with the first radio frequency power amplifier, the second combiner and the second low noise amplifier respectively, configured to receive the first processed first type network signal from the first radio frequency power amplifier and transmit the first processed first type network signal to the second combiner, and receive the signal from the second combiner and transmit the signal from the second combiner to the second low noise amplifier.

[0015] Optionally, the control module comprises a first logarithmic detection module, a second logarithmic detection module and a sampling control unit. The first logarithmic detection module is connected with the first radio frequency power amplifier and the sampling control unit respectively, and is configured to measure the intensity value of the first processed first type network signal and send the intensity value of the first processed first type network signal to the sampling control unit. The second logarithmic detection module is connected with the second radio frequency power amplifier and the sampling control unit respectively, and is configured to measure the intensity value of the second processed first type network signal and send the intensity value of the second processed first type network signal to the sampling control unit. The sampling control unit is configured to receive the intensity value of the first processed first type network signal from the first logarithmic detection module, and control the first radio frequency power amplifier to process the subsequent signal according to the intensity value of the first processed first type network signal. The sampling control unit is also configured to receive the intensity value of the second processed first type network signal from the second logarithmic detection module, and control the second radio frequency power amplifier to process the subsequent signal according to the intensity value of the second processed first type network signal. The subsequent signal comprises a signal in the signal stream of the first type network signal which enters the first sub-link later than the current signal.

[0016] Optionally, the control module further comprises a signal correction module, a synchronization module, a first switch and a second switch. The signal correction module is connected with the first low noise amplifier and the synchronization module respectively, and is configured to correct the signal amplified by the first low noise amplifier to obtain a corrected signal, and transmit the corrected signal to the synchronization module. The synchronization module is connected with the signal correction module and the sampling control unit respectively, and is configured to identify and detect whether the corrected signal is synchronized with the time slot of the base station, and feed back the detection result to the sampling control unit. The sampling control unit is also configured to receive the detection result from the synchronization module, maintain the closed state of the first switch and the second switch when the detection result is that the corrected signal is synchronized with the time slot of the base station, and turn off the first switch and the second switch when the detection result is that the corrected signal is not synchronized with the time slot of the base station. The first switch is connected in series between the first circulator and the first low noise amplifier, and is configured to be opened under the control of the sampling control unit to disconnect the signal path between the first circulator and the first low noise amplifier, and is configured to be closed under the control of the sampling control unit to form a signal path between the first circulator and the first low noise amplifier. The second switch is connected in series between the second circulator and the second low noise amplifier, and is configured to be opened under the control of the sampling control unit to disconnect the signal path between the second circulator and the second low noise amplifier, and is configured to be closed under the control of the sampling control unit to form a signal path between the second circulator and the second low noise amplifier.

[0017] Optionally, the first antenna is arranged outdoors. And / or, each of the at least one second antenna of the indoor distribution system is arranged in a different area of one indoor space or different areas of multiple indoor spaces.

[0018] The indoor distribution system provided by the application solves the problem that when the uplink and downlink frequencies are the same in a 5G time division duplex same frequency system, one device is out of step when the devices are started synchronously, which can cause damage to the device during startup. Moreover, the dual-mode signal amplifier can amplify the first type of network signal (such as a 5G signal) and the second type of network signal (such as a 4G signal) at the same time, which can guarantee good coverage and network quality of the 4G network and the 5G network in the case of strict limitation of base station construction, and the dual-mode signal amplifier is small in size, which can greatly reduce the cost and difficulty of laying in the scene of limited hardware laying, and can utilize the existing 4G network coverage to iteratively upgrade the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure diagram of an indoor distribution system in an embodiment of the application;

[0020] Figure 2 It is a structure diagram of another indoor distribution system in an embodiment of the application;

[0021] Figure 3 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0022] Figure 4 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0023] Figure 5 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0024] Figure 6 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0025] Figure 7 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0026] Figure 8 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0027] Figure 9 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0028] Figure 10 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0029] Figure 11 It is a structure diagram of still another indoor distribution system in an embodiment of the application;

[0030] Figure 12A structural diagram of another indoor distribution system in an embodiment of the present application;

[0031] Figure 13 A structural diagram of an indoor distribution system in an embodiment of the present application;

[0032] Figure 14 A schematic diagram of power control in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to enable a person skilled in the art to better understand the technical solutions of the present application, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0034] It can be understood that the specific embodiments and drawings described herein are merely used to explain the present application, but not to limit the present application.

[0035] It can be understood that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0036] It can be understood that, for the convenience of description, only parts related to the present application are shown in the drawings of the present application, and parts unrelated to the present application are not shown in the drawings.

[0037] It can be understood that each unit and module involved in the embodiments of the present application can correspond to only one entity structure, or can be composed of multiple entity structures, or multiple units and modules can be integrated into one entity structure.

[0038] It can be understood that the functions and steps marked in the flowcharts and block diagrams of the present application can occur in an order different from that marked in the drawings without conflict.

[0039] It can be understood that in the flowcharts and block diagrams of the present application, the architecture, functions and operations of the possible implementations of the systems, devices, apparatuses and methods according to the embodiments of the present application are shown. Each block in the flowcharts or block diagrams can represent a unit, module, program segment, code, which contains executable instructions for realizing the specified functions. Moreover, each block or combination of blocks in the block diagrams and flowcharts can be realized by a hardware-based system for realizing the specified functions, or by a combination of hardware and computer instructions.

[0040] It can be understood that the units and modules involved in the embodiments of the present application can be realized in a software manner, or in a hardware manner, for example, the units and modules can be located in a processor.

[0041] The embodiments of the present application provide an indoor distribution system, such as Figure 1As shown, the indoor distribution system 00 comprises a first antenna 1, an isolator 2, at least one dual-mode signal amplifier 3 and at least one second antenna 4. Each dual-mode signal amplifier 3 in the at least one dual-mode signal amplifier and each second antenna 4 in the at least one second antenna correspond to each other. The first antenna 1 is configured to receive a signal transmitted by a base station BS and transmit the signal from the base station BS to the isolator 2. The signal from the base station BS comprises a first type of network signal and a second type of network signal. The isolator 2 is configured to receive the signal from the first antenna 1 and transmit the signal from the first antenna 1 to each dual-mode signal amplifier 3 in the at least one dual-mode signal amplifier, respectively. The dual-mode signal amplifier 3 is configured to receive the signal from the isolator 2, amplify the signal from the isolator 2 to obtain a processed signal from the isolator 2, and transmit the processed signal from the isolator to the second antenna 4 corresponding to the dual-mode signal amplifier 3. The second antenna 4 is configured to receive the signal from the dual-mode signal amplifier 3 corresponding to the second antenna 4 and transmit the signal from the dual-mode signal amplifier 3 corresponding to the second antenna 4 to a terminal UE.

[0042] It can be understood that the signal transmitted by the base station BS can reach the terminal through the first antenna 1, the isolator 2, each dual-mode signal amplifier 3 in the at least one dual-mode signal amplifier and each second antenna 4 in the at least one second antenna, and complete data downlink.

[0043] It can be understood that, in the case that the first type of network signal is a 5th Generation Mobile Communication Technology (5G for short) signal, due to the same frequency band of uplink and downlink in 5G time division duplex, the presence of the isolator 2 can make the dual-mode signal amplifier 3 receiving signals in the at least one dual-mode signal amplifier and the dual-mode signal amplifier 3 transmitting signals in the at least one dual-mode signal amplifier work at the same time. For example, the isolation of the isolator 2 can be set according to the maximum transmission power of each dual-mode signal amplifier 3 in the at least one dual-mode signal amplifier and the maximum allowable non-damage input power, so that the isolator 2 attenuates the signal, thereby protecting the equipment power amplifier from being damaged by strong input signals.

[0044] For example, in the at least one dual-mode signal amplifier, the maximum transmission power of a certain dual-mode signal amplifier 3 is 30 dB, the maximum allowable non-damage input power of another dual-mode signal amplifier 3 is 0 dB, and the isolation of the isolator 2 is greater than 30 dB. In this way, even if the signal output by a certain dual-mode signal amplifier 3 enters another dual-mode signal amplifier 3 through the isolator 2, it also enters another dual-mode signal amplifier 3 after being attenuated by 30 dB through the high-isolation three-way splitter. That is, the input power of another dual-mode signal amplifier 3 is 0 dB, so as not to cause damage to another dual-mode signal amplifier 3.

[0045] It can be understood that the positions of each of the at least one dual-mode signal amplifier 3 can be set according to actual application scenarios. For example, the positions of each of the at least one dual-mode signal amplifier 3 can be set according to the output power, spatial loss and line loss of each of the at least one dual-mode signal amplifier 3, respectively.

[0046] For example, in the case that the output power of a certain dual-mode signal amplifier 3 and another dual-mode signal amplifier 3 is 80 dB, if there is no spatial loss and line loss, the power can reach 160 dB, and the isolator 2 can provide attenuation of more than 30 dB, therefore, when setting the positions of the certain dual-mode signal amplifier 3 and the another dual-mode signal amplifier 3, it is necessary to ensure that the spatial loss is about 130 dB.

[0047] It can be understood that the signal from the base station BS includes the first type of network signal and the second type of network signal, and not only the first type of network signal can be received and processed, but also the second type of network signal can be transmitted and processed. The dual-mode signal amplifier 3 in the indoor distribution system 00 provided by the embodiments of the present application can simultaneously perform signal amplification of the first type of network signal and the second type of network signal, and can cope with the signal amplification problem under the co-coverage of the 4G network and the 5G network. At the same time, it is not necessary to additionally install two kinds of equipment, and it can cope with the scene where the hardware laying is limited, and can utilize the existing 4G network coverage to iteratively upgrade the equipment, which can greatly reduce the cost and laying difficulty.

[0048] In some embodiments, as Figure 2As shown, the dual-mode signal amplifier 3 comprises a first combiner 31, a first communication link 32, a second communication link 33 and a second combiner 34. The first combiner 31 is configured to receive the signal from the isolator 2 and transmit the signal from the isolator 2 to the first communication link 32 and the second communication link 33. The first communication link 32 is connected between the first combiner 31 and the second combiner 34, configured to receive the signal from the first combiner 31, amplify the first type of network signal in the signal from the first combiner 31 to obtain a first processed first type of network signal, and send the first processed first type of network signal to the second combiner 34. The second communication link 33 is connected in parallel with the first communication link 32, configured to receive the signal from the first combiner 31, process the second type of network signal in the signal from the first combiner 31 to obtain a first processed second type of network signal, and send the first processed second type of network signal to the second combiner 34. The second combiner 34 is configured to receive the first processed first type of network signal from the first communication link 32 and send the first processed first type of network signal to the second antenna 4 corresponding to the dual-mode signal amplifier 3, and receive the first processed second type of network signal from the second communication link 33 and send the first processed second type of network signal to the second antenna 4 corresponding to the dual-mode signal amplifier 3.

[0049] It can be understood that the frequency band of the first type of network signal and the frequency band of the second type of network signal are significantly different. The second type of network signal mainly uses the frequency band of 700MHz to 2.6GHz, while the first type of network signal uses a higher frequency band, such as 3.5GHz, 26GHz and 28GHz, etc. The transmission technologies of the first type of network signal and the second type of network signal are also different. The second type of network signal adopts a more mature LTE technology, which has strong signal penetration ability and coverage. While the first type of network signal adopts a more advanced technology, such as millimeter wave transmission, although it has a significant improvement in transmission rate and capacity, it is limited in coverage. The indoor distribution system provided by the embodiment of the present application transmits and processes the first type of network signal by setting the first communication link 32, transmits and processes the second type of network signal by setting the second communication link 33, and the first communication link 32 and the second communication link 33 are connected in parallel, so that the first type of network signal and the second type of network signal can be processed at the same time.

[0050] It can be understood that the signal received by the first combiner 31 from the isolator 2 is the signal from the base station BS forwarded by the isolator 2, and the signal from the base station BS can be a second type of network signal or a first type of network signal, that is, the signal received by the first combiner 31 can be a second type of network signal or a first type of network signal. When the first combiner 31 transmits the signal to the first communication link 32 and the second communication link 33, it does not only transmit the first type of network signal to the first communication link 32, nor only transmit the second type of network signal to the second communication link 33, but transmits the received signal to the first communication link 32 and the second communication link 33 at the same time. After receiving the signal from the first combiner 31, the first communication link 32 only processes the first type of network signal in the signal from the first combiner 31, and does not process the second type of network signal in the signal from the first combiner 31. Similarly, after receiving the signal from the first combiner 31, the second communication link 33 only processes the second type of network signal in the signal from the first combiner 31, and does not process the first type of network signal in the signal from the first combiner 31.

[0051] It can be understood that the technology of amplifying and processing the second type of network signal in the second communication link is mature, for example, a mobile phone signal enhancer or a repeater can be used as the second communication link. In this way, in the scene where the hardware laying is limited, the existing 4G network coverage can be used for iterative upgrading of the device, which can greatly reduce the cost and laying difficulty.

[0052] In some embodiments, as shown in Figure 3 The first communication link 32 includes a first sub-link 321 and a control module 322. The first sub-link 321 is used to receive the signal from the first combiner 31, to process the first type of network signal in the signal from the first combiner 31 according to the first control signal from the control module 322, to obtain the first processed first type of network signal, and to send the first processed first type of network signal to the second combiner 34. The control module 322 is connected to the first sub-link 321 and is used to send the first control signal to the first sub-link 321.

[0053] It can be understood that the first sub-link 321 can be provided with an enhancement device that can enhance the first type of network signal to amplify and process the first type of network signal in the signal from the first combiner 31. According to the requirements of the application scene, the amplification multiple of the first sub-link 321 or the requirement of the first type of network signal amplification can be set in the control module 322, so that the first processed first type of network signal can meet the requirements of the application scene.

[0054] In some embodiments, as shown in Figure 4As shown, the first sub-link 321 includes a first low noise amplifier LNA1, a first gain control module ZY1, a first driving stage QD1, and a first radio frequency power amplifier PA1 connected in series. The first low noise amplifier LNA1 is configured to receive the first type of network signal from the first combiner 31, amplify the first type of network signal from the first combiner 31, and obtain a first primary amplified signal. The first gain control module ZY1 is configured to determine the intensity value of the first primary amplified signal, and send the intensity value of the first primary amplified signal to the control module 322. The control module 322 is configured to determine whether the intensity value of the first primary amplified signal meets a first preset condition. If the intensity value of the first primary amplified signal meets the first preset condition, the control module 322 does not send a first control signal to the first radio frequency power amplifier PA1, so that the first radio frequency power amplifier PA1 does not amplify the first primary amplified signal. If the intensity value of the first primary amplified signal does not meet the first preset condition, the control module 322 sends the first control signal to the first radio frequency power amplifier PA1. The first control signal is configured to control the first radio frequency power amplifier PA1 to amplify the first primary amplified signal, so that the signal amplified by the first radio frequency power amplifier PA1 meets the first preset condition. The first driving stage QD1 is configured to transmit the first primary amplified signal to the first radio frequency power amplifier PA1. The first radio frequency power amplifier PA1 is configured to amplify or not amplify the first primary amplified signal under the control of the control module 322, and obtain a first processed first type of network signal.

[0055] It can be understood that the first low noise amplifier LNA1 can only receive and process the signals of the frequency band conforming to the first type of network signal, and therefore the second type of network signal in the signal from the first combiner 31 will not be processed by the first low noise amplifier LNA1 even if it enters the first sub-link. After the first low noise amplifier LNA1 processes the first type of network signal in the signal from the first combiner 31 and obtains the first primary amplified signal, the first gain control module ZY1 feeds the intensity value of the first primary amplified signal to the control module 322, and the control module 322 judges whether the intensity value of the first primary amplified signal meets the first preset condition. The first preset condition can be that the intensity value of the first processed first type of network signal cannot be lower than the first preset intensity value. If the intensity value of the first primary amplified signal meets the first preset condition, the control module 322 controls the first radio frequency power amplifier PA1 to no longer enhance the first primary amplified signal, but directly outputs the first primary amplified signal. In this case, the first primary amplified signal is the first processed first type of network signal. If the intensity value of the first primary amplified signal does not meet the first preset condition, the control module 322 controls the first radio frequency power amplifier PA1 to enhance the first primary amplified signal, and determines the amplitude of the first radio frequency power amplifier PA1 to enhance the first primary amplified signal (for example, the control module 322 can set a step size and control the number of steps of the first radio frequency power amplifier PA1 to enhance).

[0056] It can be understood that the first low noise amplifier LNA1 is a low noise amplifier (Low-Noise Amplifier, LNA), an important circuit device widely used in wireless communication systems. Its main function is to amplify the weak signal from the antenna to a sufficient intensity, so that the subsequent circuit can effectively process. In a wireless communication system, the low noise amplifier is usually used as the first stage amplifier of the receiving link, and undertakes the key tasks of amplifying weak signals, increasing system sensitivity, and improving signal-to-noise ratio. The low noise amplifier needs to amplify the weak signal as much as possible while not introducing too much noise to maintain the signal-to-noise ratio of the system. The first driving stage QD1 can provide sufficient power to drive the following radio frequency power amplifier to ensure signal quality and intensity. The first radio frequency power amplifier PA1 is a radio frequency power amplifier (RF Power Amplifier, PA), which is one of the more critical components in the link, used to ensure that the signal can cover the required distance and has sufficient power output.

[0057] In some embodiments, as Figure 5As shown, the second antenna 4 is also configured to receive a signal transmitted by the terminal UE and transmit the signal from the terminal UE to the dual-mode signal amplifier 3 corresponding to the second antenna 4. The dual-mode signal amplifier 3 is also configured to receive the signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3, amplify the signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3, obtain a processed signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3, and transmit the processed signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3 to the isolator 2. The isolator 2 is also configured to receive the signal from each of the at least one dual-mode signal amplifier 3 and transmit the signal from each of the at least one dual-mode signal amplifier 3 to the first antenna 1. The first antenna 1 is also configured to receive the signal from the isolator 2 and transmit the signal from the isolator 2 to the base station BS. The signal from the terminal UE includes the first type of network signal and the second type of network signal.

[0058] As can be understood, the signal transmitted by the terminal UE can sequentially pass through each of the at least one second antenna 4, each of the at least one dual-mode signal amplifier 3, the isolator 2, and the first antenna 1 to reach the base station, thereby completing data uplink.

[0059] In some embodiments, as shown, Figure 6 The second combiner 34 is also configured to receive the signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3 and transmit the signal from the second antenna 4 corresponding to the dual-mode signal amplifier 3 to the first communication link 32 and the second communication link 33, respectively. The first communication link 32 is also configured to receive the signal from the second combiner 34, amplify the first type of network signal in the signal from the second combiner 34, obtain a second processed first type of network signal, and transmit the second processed first type of network signal to the first combiner 31. The second communication link 33 is also configured to receive the signal from the second combiner 34, amplify the second type of network signal in the signal from the second combiner 34, obtain a second processed second type of network signal, and transmit the second processed second type of network signal to the first combiner 31. The first combiner 31 is also configured to receive the second processed first type of network signal from the first communication link 32 and transmit the second processed first type of network signal to the isolator 2, and receive the second processed second type of network signal from the second communication link 33 and transmit the second processed second type of network signal to the isolator 2.

[0060] As can be understood, the dual-mode signal amplifier 3 can transmit and process uplink data.

[0061] In some embodiments, as shown, Figure 7As shown, the first communication link 32 further comprises a second sub-link 323. The second sub-link 323 is configured to receive the signal from the second combiner 34, process the first type network signal in the signal from the second combiner 34 according to a second control signal from a control module 322 to obtain a second processed first type network signal, and send the second processed first type network signal to the first combiner 31. The control module 322 is further connected to the second sub-link 323 and configured to send the second control signal to the second sub-link 323.

[0062] It can be understood that the first sub-link 321 is a downlink in the first communication link 32, and the second sub-link 323 is an uplink in the first communication link 32. Similarly, an enhancement device that can enhance the first type network signal can be arranged in the second sub-link 323 to process the first type network signal in the signal from the second combiner 34. According to the requirements of the application scenario, the amplification multiple of the second sub-link 323, or the requirement of the first type network signal amplification, can be set in the control module 322, so that the second processed first type network signal can meet the requirements of the application scenario.

[0063] In some embodiments, as shown in FIG. 3, the first communication link 32 further comprises a second sub-link 323. The second sub-link 323 is configured to receive the signal from the second combiner 34, process the first type network signal in the signal from the second combiner 34 according to a second control signal from a control module 322 to obtain a second processed first type network signal, and send the second processed first type network signal to the first combiner 31. The control module 322 is further connected to the second sub-link 323 and configured to send the second control signal to the second sub-link 323. Figure 8 As shown, the second sub-link 323 comprises a second low noise amplifier LNA2, a second gain control module ZY2, a second driver stage QD2 and a second radio frequency power amplifier PA2 connected in series. The second low noise amplifier LNA2 is configured to receive the first type network signal in the signal from the second combiner 34, amplify and process the first type network signal in the signal from the second combiner 34 to obtain a second primary amplified signal. The second gain control module ZY2 is configured to determine the intensity value of the second primary amplified signal, and send the intensity value of the second primary amplified signal to the control module 322. The control module 322 is configured to determine whether the intensity value of the second primary amplified signal meets a second preset condition. If the intensity value of the second primary amplified signal meets the second preset condition, the control module 322 does not send a second control signal to the second radio frequency power amplifier PA2, so that the second radio frequency power amplifier PA2 does not process the second primary amplified signal. If the intensity value of the second primary amplified signal does not meet the second preset condition, the control module 322 sends the second control signal to the second radio frequency power amplifier PA2. The second control signal controls the second radio frequency power amplifier PA2 to amplify and process the second primary amplified signal, so that the signal amplified by the second radio frequency power amplifier PA2 meets the second preset condition. The second driver stage QD2 is configured to transmit the second primary amplified signal to the second radio frequency power amplifier PA2. The second radio frequency power amplifier PA2 is configured to amplify and process the second primary amplified signal under the control of the control module 322, or not to amplify and process the second primary amplified signal, and obtain the second processed first type network signal.

[0064] Understandably, the second low-noise amplifier (LNA2) can only receive and process signals in the frequency band that conform to the first type of network signal. Therefore, even if the second type of network signal from the second combiner 34 enters the second sub-link, it will not be processed by the second LNA2. After the second LNA2 processes the first type of network signal from the second combiner 34 and obtains the second primary amplified signal, the second gain control module ZY2 feeds back the intensity value of the second primary amplified signal to the control module 322. The control module 322 determines whether the intensity value of the second primary amplified signal meets the second preset condition. The second preset condition can be that the intensity value of the second processed first type of network signal cannot be lower than the second preset intensity value. If the intensity value of the second primary amplified signal meets the second preset condition, the control module 322 controls the second RF power amplifier PA2 to no longer amplify the second primary amplified signal, but directly outputs the second primary amplified signal. In this case, the second primary amplified signal is the second processed first type of network signal. If the intensity value of the second primary amplified signal does not meet the second preset condition, the control module 322 controls the second radio frequency power amplifier PA2 to enhance the second primary amplified signal and determines the amplitude of the enhancement of the second primary amplified signal by the second radio frequency power amplifier PA1 (for example, the control module 322 can set a step size and control the number of enhancement levels of the second radio frequency power amplifier PA2).

[0065] In some embodiments, such as Figure 9 As shown, the first communication link 32 also includes a first circulator HX1 and a second circulator HX2. The first circulator HX1 is connected to a first low-noise amplifier LNA1, a first combiner 31, and a second radio frequency power amplifier PA2, respectively. It is used to receive signals from the first combiner 31, transmit signals from the first combiner 31 to the first low-noise amplifier LNA1, and receive a second processed first-type network signal from the second radio frequency power amplifier PA2, and transmit the second processed first-type network signal to the first combiner 31. The second circulator HX2 is connected to the first radio frequency power amplifier PA1, the second combiner 34, and the second low-noise amplifier LNA2, respectively. It is used to receive a first processed first-type network signal from the first radio frequency power amplifier PA1 and transmit the first processed first-type network signal to the second combiner 34, and to receive signals from the second combiner 34 and transmit signals from the second combiner 34 to the second low-noise amplifier LNA2.

[0066] It can be understood that the circulator is a device that allows electromagnetic waves to be transmitted unidirectionally in a loop. It is also called a unidirectional transmitter. Its working principle is based on the characteristics of ferrite material and Faraday rotation effect. When electromagnetic waves are input from a certain port, they will propagate in a specific direction within the circulator and be output from the output port, while the reverse transmission signal is isolated and does not affect normal transmission. That is, the circulator can isolate signals in different directions and ensure that signals are transmitted along the expected path. It can isolate transmit signals and receive signals to prevent transmit signals from interfering with receive signals, thereby improving communication quality. By isolating the reverse signal, the circulator can protect the device from the impact of reflected signals. In particular, in a high-power radio frequency system, the circulator can prevent reflected signals from damaging key devices such as power amplifiers. The circulator has the characteristics of unidirectional transmission of high-frequency signal energy, which controls the transmission of electromagnetic waves in a certain loop direction, achieving unidirectional transmission and isolation of signals. In addition, the circulator has the characteristics of small size, wide frequency band, and small insertion loss.

[0067] It can be understood that the first circulator HX1 and the second circulator HX2 can isolate the signals of the first sub-link 321 and the signals of the second sub-link 323, and ensure that the direction of signal flow in the first sub-link 321 is downward, and the direction of signal flow in the second sub-link 323 is upward.

[0068] In some embodiments, as shown in Figure 10 The control module 322 includes a first logarithmic detection module DS1, a second logarithmic detection module DS2, and a sampling control unit MCU. The first logarithmic detection module DS1 is connected to the first radio frequency power amplifier PA1 and the sampling control unit MCU, respectively, for measuring the intensity value of the first processed first type network signal and sending the intensity value of the first processed first type network signal to the sampling control unit MCU. The second logarithmic detection module DS2 is connected to the second radio frequency power amplifier PA2 and the sampling control unit MCU, respectively, for measuring the intensity value of the second processed first type network signal and sending the intensity value of the second processed first type network signal to the sampling control unit MCU. The sampling control unit MCU is used to receive the intensity value of the first processed first type network signal from the first logarithmic detection module DS1, and control the processing of subsequent signals by the first radio frequency power amplifier PA1 according to the intensity value of the first processed first type network signal. And used to receive the intensity value of the second processed first type network signal from the second logarithmic detection module DS2, and control the processing of subsequent signals by the second radio frequency power amplifier PA2 according to the intensity value of the second processed first type network signal. Wherein, the subsequent signal includes the signal after the current signal enters the first sub-link.

[0069] It can be understood that the subsequent signal refers to the signal entering the first sub-link later than the current signal in the signal stream of the first type of network signal.

[0070] Exemplarily, in the case that the intensity value of the first type of network signal after the first processing or the intensity value of the first type of network signal after the second processing is too large (such as exceeding the third preset intensity value), the sampling control unit MCU can gradually reduce the amplification multiples of the first radio frequency power amplifier PA1 and the second radio frequency power amplifier PA2 by gradually reducing the amplification step or the enhancement number in the processing of the subsequent signal, so that the signal amplified by the first radio frequency power amplifier PA1 and the second radio frequency power amplifier PA2 in the subsequent signal amplification work is gradually reduced to an appropriate range.

[0071] It can be understood that by measuring the intensity values of the output signals of the two radio frequency power amplifiers (the first radio frequency power amplifier PA1 and the second radio frequency power amplifier PA2) in real time through the two logarithmic detection modules (the first logarithmic detection module DS1 and the second logarithmic detection module DS2), the sampling control unit MCU can dynamically adjust the working state of the radio frequency power amplifier according to the information of these intensity values, which helps to maintain the stability and consistency of the output signal, especially in the case of large signal intensity fluctuation. According to the real-time feedback of the signal intensity, the control module MCU can more accurately control the output power of the radio frequency power amplifier, thereby avoiding unnecessary power waste, which helps to reduce energy consumption and improve the energy efficiency ratio of the indoor distribution system 00. By dynamically adjusting the output power of the two radio frequency power amplifiers, the control module MCU can ensure that the output signal always remains in an appropriate intensity range, thereby enhancing the transmission quality and reception effect of the signal. Moreover, when the output signal intensity of the two radio frequency power amplifiers is too high, the control module MCU can prevent equipment overload or damage by reducing the output power of the radio frequency power amplifier, which helps to prolong the service life of the equipment and reduce maintenance costs.

[0072] In some embodiments, as Figure 11As shown, the control module 322 further includes a signal correction module XZ, a synchronization module TB, a first switch SPDT1 and a second switch SPDT2. Among them, the signal correction module XZ is connected with the first low noise amplifier LNA1 and the synchronization module TB respectively, used for correcting the signal amplified by the first low noise amplifier LNA1 to obtain a corrected signal, and transmitting the corrected signal to the synchronization module TB. The synchronization module TB is connected with the signal correction module XZ and the sampling control unit MCU respectively, used for identifying and detecting whether the corrected signal is synchronized with the time slot of the base station, and feeding back the detection result to the sampling control unit MCU. The sampling control unit MCU is used for receiving the detection result from the synchronization module TB, keeping the first switch SPDT1 and the second switch SPDT2 in a closed state in the case that the detection result is that the corrected signal is synchronized with the time slot of the base station, and turning off the first switch SPDT1 and the second switch SPDT2 in the case that the detection result is that the corrected signal is not synchronized with the time slot of the 5G base station. The first switch SPDT1 is connected in series between the first circulator HX1 and the first low noise amplifier LNA1, used for being opened under the control of the sampling control unit MCU to disconnect the signal path between the first circulator HX1 and the first low noise amplifier LNA1, and used for being closed under the control of the sampling control unit MCU to form a signal path between the first circulator HX1 and the first low noise amplifier LNA1. The second switch SPDT2 is connected in series between the second circulator HX2 and the second low noise amplifier LNA2, used for being opened under the control of the sampling control unit MCU to disconnect the signal path between the second circulator HX2 and the second low noise amplifier LNA2, and used for being closed under the control of the sampling control unit MCU to form a signal path between the second circulator HX2 and the second low noise amplifier LNA2.

[0073] It can be understood that the signal correction module XZ can obtain the signal processed by the first low noise amplifier LNA1 from the first low noise amplifier LNA1 (for example, connecting the signal correction module XZ between the L1 stage and the L2 stage of the first low noise amplifier LNA1), and correct the signal processed by the first low noise amplifier LNA1 to obtain a corrected signal, so as to adjust the signal processed by the first low noise amplifier LNA1 to a signal that can be identified by the synchronization module TB, so that the synchronization module TB identifies the timestamp of the corrected signal, and determines whether the corrected signal is synchronized with the time slot of the base station according to the timestamp of the corrected signal.

[0074] Exemplarily, in the case that the first type of network signal is a 5G signal, since the 5G technology supports large-scale multi-user access, time slot synchronization can ensure that different user equipment will not interfere with each other in the same time window. This is particularly important for systems that use time division multiple access or super time division multiplexing mechanisms. In time slot synchronization, each device transmits and receives signals in a predetermined time sequence, which can reduce signal overlap and interference caused by time offset, and improve the integrity and quality of the signal. Therefore, only when the corrected signal is synchronized with the time slot of the 5G base station, the processing and transmission of the signal will not cause errors in the transmission of the 5G signal. Once the corrected signal is not synchronized with the time slot of the 5G base station, the sampling control unit MCU can turn off the first switch SPDT1 and the second switch SPDT2, at which time the first communication link is disconnected, and the processing and transmission of the 5G signal are no longer performed.

[0075] It can be understood that, under normal circumstances, the first switch SPDT1 and the second switch SPDT2 are in a closed state to ensure the normal operation of the first sub-link 321 and the second sub-link 323.

[0076] Exemplarily, as shown in Figure 12 , the first switch SPDT1 and the second switch SPDT2 can be single-pole double-throw switches. When the first switch SPDT1 is closed, the signal path between the first circulator HX1 and the first low-noise amplifier LNA1 is closed. When the first switch SPDT1 is open, the signal path between the first circulator HX1 and the first low-noise amplifier LNA1 is open. The first switch SPDT1 can be connected to the load FZ1. Similarly, when the second switch SPDT2 is closed, the signal path between the second circulator HX2 and the second low-noise amplifier LNA2 is closed. When the second switch SPDT2 is open, the signal path between the second circulator HX2 and the second low-noise amplifier LNA2 is open. The second switch SPDT2 can be connected to the load FZ2.

[0077] In some embodiments, the first antenna 1 is arranged outdoors.

[0078] It can be understood that the first antenna 1 is used for information interaction with the base station BS. In order to ensure that the first antenna 1 can normally interact with the base station BS, the first antenna 1 can be arranged outdoors.

[0079] Exemplarily, the first antenna can be a 5G omnidirectional antenna with a customized frequency band. In the case that the installation position of the first antenna is limited, the first antenna can be modified to ensure that it can receive base station signals from different angles through a 360-degree horizontal lobe, thereby ensuring the stable operation of the indoor distribution system.

[0080] In some embodiments, each of the at least one second antenna 4 is arranged in a different area of one indoor space or different areas of multiple indoor spaces.

[0081] It can be understood that arranging the at least one second antenna 4 in different positions of one indoor space can ensure the signal coverage and strength of the one indoor space. Arranging the at least one second antenna 4 in different positions of multiple indoor spaces can ensure the signal coverage and strength of the multiple indoor spaces.

[0082] The following describes an indoor distribution system provided by the embodiments of the present application, taking the first type of network signal as a 5G signal and the second type of network signal as a 4G signal as an example.

[0083] In the example, as shown in Figure 12 and Figure 13 , the indoor distribution system is composed of an outdoor receiving antenna (i.e., a first antenna), a high-isolation triplexer (i.e., an isolator), a 4G and 5G signal amplifier main body (i.e., a dual-mode signal amplifier, also referred to as a 4G&5G device hereinafter), and an indoor antenna (i.e., a second antenna).

[0084] Among them, the outdoor receiving antenna serves as a signal forwarding device. In general, the outdoor receiving antenna has strict requirements for installation position. In the example, a 5G omnidirectional antenna with a customized frequency band is selected. In the case where the antenna installation position is limited, the antenna is ensured to be able to receive base station signals from different angles through a 360-degree horizontal lobe, thereby ensuring stable operation of the system.

[0085] In a time division duplexing (TDD) same-frequency system, the uplink and downlink frequencies are the same. As shown in Figure 13 , when multiple 4G&5G devices (4G&5G device A and 4G&5G device B) are started synchronously, if one of the 4G&5G devices is out of synchronization, it will cause damage during startup. The use of a high-isolation triplexer increases the isolation between devices, so that the spatial loss between two indoor distributions is greater than 130 dB, thereby ensuring the safe and normal operation of the devices. That is, due to the reason that the uplink and downlink frequencies of the 5G network are in the same frequency band, the addition of a high-isolation triplexer can make one 4G&5G device transmit signals and one 4G&5G device receive signals in the indoor distribution system, so that the high-isolation triplexer attenuates the transmitted signals into another 4G&5G device, thereby protecting the 4G&5G device power amplifier from being damaged due to strong input signals.

[0086] For example, as shown in Figure 13As shown, the maximum transmit power of the 4G&5G device A is 30dB, the maximum allowable input power of the 4G&5G device B is 0dB, and the isolation of the high-isolation triplexer is greater than 30dB. Therefore, even if the signal output by the 4G&5G device A enters the 4G&5G device B through the high-isolation triplexer, it is attenuated by 30dB before entering the 4G&5G device B. That is, the input power of the 4G&5G device B is 0dB, which will not cause damage to the 4G&5G device B.

[0087] In addition, as an example, when the output power of the 4G&5G device A and the 4G&5G device B is 80dB, if there is no space loss and line loss, the power can reach 160dB, and the high-isolation triplexer can provide attenuation of more than 30dB. Therefore, when placing the 4G&5G device A and the 4G&5G device B, the space loss needs to be ensured to be about 130dB.

[0088] The 4G and 5G signal amplifier main body is a main functional device for processing, amplifying and propagating the received signal. It contains a sampling control unit (MCU), a gain control module (first and second gain control modules), a logarithmic detection module (first and second logarithmic detection modules), a circulator (first and second circulators), a low-noise amplifier (first and second low-noise amplifiers), a 5G synchronization module, etc.

[0089] As shown in Figure 12 The signal is input from the first combiner 31, passes through the first circulator HX1, and the signal flow unidirectionally flows into the first low-noise amplifier LNA1 to improve the output signal-to-noise ratio. The signal correction module XZ connected with the first low-noise amplifier LNA1 and the 5G synchronization module TB are used for signal waveform correction and 5G base station time slot synchronization. The signal continues to enter the first radio frequency power amplifier PA1 to amplify the signal strength, and the power control and uplink input over-power protection detection are performed by the sampling control unit MCU. Finally, the signal is output to the second antenna through the second combiner 34 to complete the data downlink. The signal transmitted by the user terminal UE reaches the second combiner 34 through the indoor antenna, passes through the second circulator HX2, and the signal flow unidirectionally flows into the second low-noise amplifier LNA2. The signal continues to enter the second radio frequency power amplifier PA2 to amplify the signal strength, and the power control and uplink input over-power protection detection are performed by the sampling control unit MCU. Finally, the signal is output to the outdoor receiving antenna through the first combiner 31, and the outdoor receiving antenna transmits the signal to the 5G base station to complete the data uplink.

[0090] 5G synchronization module TB can be in any one device out of step, sampling control unit MCU can forcibly shut down the first communication link (i.e. 5G communication link) PA, destroy the internal closed loop self-excitation condition of dual-mode signal amplifier, protect the dual-mode signal amplifier from damage. In addition, the 5G synchronization module can be moved to the first low noise amplifier LNA1, when the time slot synchronization fails, the soft reset instruction can be sent by the sampling control unit MCU to forcibly start soft, to prevent the problem of 5G network out of step after synchronization.

[0091] The P1 level amplifier tube model in the first radio frequency power amplifier PA1 and the second radio frequency power amplifier PA2 is selected to be a large tube that can withstand input power. The sampling control unit MCU startup change is to gradually release the attenuation, which ensures that the P1 level tube is not impacted, and at the same time improves the sampling control unit MCU software sampling rate. The P3 level 20W tube is replaced with a 70W tube to increase the rollback depth to prevent saturation distortion.

[0092] When the signal amplifier reaches an ultra-high load, the present example selects to use the 5G synchronization module to obtain the reference signal receiving power (RSRP) as the device input calibration parameter, the received signal strength indicator (RSSI) as the automatic power control power (ALC) output calibration parameter, and sets the bias to preform sufficient channel power redundancy to ensure that the user download rate is not affected when the load is high.

[0093] For example, as shown in Figure 14 The gain control module is controlled by the sampling control unit MCU to amplify the pilot channel power RSRP and the service channel power input signal, so that the first radio frequency power amplifier PA1 carries the power RSSI equal to the sum of the RSRP pilot channel power and the service channel power.

[0094] Taking the 5G base station of the existing network 32TR as an example, the total transmit power is 320W, about 55dBm, the bandwidth is 100M, the radio bearer RB is 273, and the subcarrier spacing is 30KHZ. Therefore, the RSRP pilot power can be calculated as:

[0095] RSRP pilot power = 55 - 10LOG(273*12) = 55 - 35.15 = 19.85dBm

[0096] The RSRP pilot power is a constant value, while the service signal dynamically changes according to the number of users. If the 5G base station load of 95% is taken as the limit, it can be inferred that the service channel power redundancy of 33.34 dB (about equal to 33 dBm) needs to be reserved. Therefore, the device channel power RSSI = pilot channel power RSRP (constant 19.85 dBm) + service channel power (fluctuates within the 33 dBm range according to the amount of service).

[0097] The first logarithmic detection module DS1 and the second logarithmic detection module DS2 are mainly used for measuring radio frequency power, so that the output power of the first radio frequency power amplifier PA1 and the second radio frequency power amplifier PA2 corresponds to a voltage calibration value, which is used as an input parameter for the sampling control unit MCU.

[0098] The gain control module (the first gain control module and the second gain control module) is a variable attenuator, which is generally digitally controlled, supports serial mode, is relatively easy to interface with the sampling control unit MCU, and can be controlled by only three pins of a general-purpose input / output (GPIO) interface of the sampling control unit MCU, such as a 1 DATA pin, a 1 CLK pin and a 1 LE chip selection pin. In addition, the DATA pin and the CLK pin can also be multiplexed as a bus, which is relatively economical in terms of pin resources of the sampling control unit MCU.

[0099] After the logarithmic detection module detects the radio frequency power, it is converted into a voltage input parameter, and the voltage input parameter is given to the sampling control unit MCU, so that the sampling control unit MCU calculates through the embedded algorithm of C language, and controls the digital attenuator through the three pins of DATA, CLK clock and LE chip selection. In order to ensure that the control can be quickly controlled to achieve the purpose of power control, the entire running calculation time of the sampling control unit MCU needs to be controlled within 0.3 milliseconds, otherwise the power control cannot keep up with the speed of signal change, and the purpose of control is lost. As for the selection of ALC or AGC mode, it depends on different systems. The communication system will be more inclined to AGC mode and the cost will be lower, and the broadcast system will be more inclined to ALC mode.

[0100] It can be understood that the above embodiments are only exemplary embodiments adopted for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. An indoor distribution system, characterized in that, It includes a first antenna, an isolator, at least one dual-mode signal amplifier, and at least one second antenna, wherein each dual-mode signal amplifier in the at least one dual-mode signal amplifier corresponds one-to-one with each second antenna in the at least one second antenna; The first antenna is used to receive signals transmitted by the base station and to transmit signals from the base station to the isolator; the signals from the base station include first-type network signals or second-type network signals. The isolator is used to receive signals from the first antenna and transmit signals from the first antenna to each of the at least one dual-mode signal amplifiers. The dual-mode signal amplifier is used to receive the signal from the isolator, amplify the signal from the isolator to obtain the processed signal from the isolator, and send the processed signal from the isolator to the second antenna corresponding to the dual-mode signal amplifier. The second antenna is used to receive signals from the dual-mode signal amplifier corresponding to the second antenna, and to send signals from the dual-mode signal amplifier corresponding to the second antenna to the terminal.

2. The indoor distribution system according to claim 1, characterized in that, The dual-mode signal amplifier includes: A first combiner is used to receive signals from the isolator and transmit the signals from the isolator to a first communication link and a second communication link, respectively. The first communication link is connected between the first combiner and the second combiner, and is used to receive the first type of network signal from the first combiner, amplify the first type of network signal from the first combiner to obtain the first type of network signal after processing, and send the first type of network signal after processing to the second combiner. The second communication link, connected in parallel with the first communication link, is used to receive signals from the first combiner, amplify the second type of network signal in the signal from the first combiner to obtain a first-processed second type of network signal, and send the first-processed second type of network signal to the second combiner; and The second combiner is configured to receive the first processed first type of network signal from the first communication link and transmit the first processed first type of network signal to the second antenna corresponding to the dual-mode signal amplifier, and to receive the first processed second type of network signal from the second communication link and transmit the first processed second type of network signal to the second antenna corresponding to the dual-mode signal amplifier.

3. The indoor distribution system according to claim 2, characterized in that, The first communication link includes: A first sub-link is configured to receive signals from the first combiner, process a first type of network signal in the signals from the first combiner according to a first control signal from the control module, obtain the first type of network signal after processing, and send the first type of network signal after processing to the second combiner; and The control module is connected to the first sub-link and is used to send the first control signal to the first sub-link.

4. The indoor distribution system according to claim 3, characterized in that, The first sub-link includes a first low-noise amplifier, a first gain control module, a first driver stage, and a first RF power amplifier connected in series; wherein, The first low-noise amplifier is used to receive a first type of network signal from the signal from the first combiner, amplify the first type of network signal from the signal from the first combiner and obtain a first primary amplified signal; The first gain control module is used to determine the intensity value of the first primary amplified signal and send the intensity value of the first primary amplified signal to the control module; The control module is used to determine whether the intensity value of the first primary amplified signal meets a first preset condition. If the intensity value of the first primary amplified signal meets the first preset condition, the control module does not send the first control signal to the first radio frequency power amplifier so that the first radio frequency power amplifier does not amplify the first primary amplified signal. If the intensity value of the first primary amplified signal does not meet the first preset condition, the control module sends the first control signal to the first radio frequency power amplifier. The first control signal is used to control the first radio frequency power amplifier to amplify the first primary amplified signal so that the signal amplified by the first radio frequency power amplifier meets the first preset condition. The first driver stage is used to transmit the first primary amplified signal to the first radio frequency power amplifier; The first radio frequency power amplifier is used to amplify the first primary amplified signal or not amplify it under the control of the control module, and to obtain the first type of network signal after the first processing.

5. The indoor distribution system according to any one of claims 3 to 4, characterized in that, The second antenna is also used to receive signals sent by the terminal and to send signals from the terminal to a dual-mode signal amplifier corresponding to the second antenna; the signals from the terminal include first-type network signals and second-type network signals. The dual-mode signal amplifier is also used to receive a signal from the second antenna corresponding to the dual-mode signal amplifier, amplify the signal from the second antenna corresponding to the dual-mode signal amplifier to obtain a processed signal from the second antenna corresponding to the dual-mode signal amplifier, and send the processed signal from the second antenna corresponding to the dual-mode signal amplifier to the isolator. The isolator is also used to receive signals from each of the at least one dual-mode signal amplifiers and to transmit signals from each of the at least one dual-mode signal amplifiers to the first antenna. The first antenna is also used to receive signals from the isolator and to send signals from the isolator to the base station.

6. The indoor distribution system according to claim 5, characterized in that, The second combiner is also used to receive the signal from the second antenna corresponding to the dual-mode signal amplifier, and to transmit the signal from the second antenna corresponding to the dual-mode signal amplifier to the first communication link and the second communication link respectively; The first communication link is also used to receive signals from the second combiner, amplify the first type of network signal in the signal from the second combiner to obtain a second processed first type of network signal, and send the second processed first type of network signal to the first combiner. The second communication link is also used to receive signals from the second combiner, amplify the second type of network signal in the signal from the second combiner to obtain a second processed second type of network signal, and send the second processed second type of network signal to the first combiner; The first combiner is also configured to receive the second processed first type of network signal from the first communication link and send the second processed first type of network signal to the isolator, and to receive the second processed second type of network signal from the second communication link and send the second processed second type of network signal to the isolator.

7. The indoor distribution system according to claim 6, characterized in that, The first communication link also includes: The second sub-link is used to receive signals from the second combiner, process the first type of network signals in the signals from the second combiner according to the second control signal from the control module, obtain the second processed first type of network signals, and send the second processed first type of network signals to the first combiner. The control module is also connected to the second sub-link and is used to send the second control signal to the second sub-link.

8. The indoor distribution system according to claim 7, characterized in that, The second sub-link includes a second low-noise amplifier, a second gain control module, a second driver stage, and a second RF power amplifier connected in series; wherein, The second low-noise amplifier is used to receive a first type of network signal from the signal from the second combiner, amplify the first type of network signal from the signal from the second combiner, and obtain a second primary amplified signal. The second gain control module is used to determine the intensity value of the second primary amplified signal and send the intensity value of the second primary amplified signal to the control module; The control module is used to determine whether the intensity value of the second primary amplified signal meets the second preset condition. If the intensity value of the second primary amplified signal meets the second preset condition, the second control signal is not sent to the second radio frequency power amplifier so that the second radio frequency power amplifier does not amplify the second primary amplified signal. If the intensity value of the second primary amplified signal does not meet the second preset condition, the second control signal is sent to the second radio frequency power amplifier. The second control signal is used to control the second radio frequency power amplifier to amplify the second primary amplified signal so that the signal amplified by the second radio frequency power amplifier meets the second preset condition. The second driver stage is used to transmit the second primary amplified signal to the second RF power amplifier; The second radio frequency power amplifier is used to amplify the second primary amplified signal or not amplify it under the control of the control module, and to obtain the second processed first type network signal.

9. The indoor distribution system according to claim 8, characterized in that, The first communication link also includes: A first circulator, connected to a first low-noise amplifier, a first combiner, and a second RF power amplifier, is used to receive signals from the first combiner, transmit the signals from the first combiner to the first low-noise amplifier, and receive the second-processed first-type network signal from the second RF power amplifier, and send the second-processed first-type network signal to the first combiner; the first sub-link includes the first low-noise amplifier, a first gain control module, a first driver stage, and a first RF power amplifier connected in series; and The second circulator is connected to the first RF power amplifier, the second combiner, and the second low-noise amplifier, respectively. It is used to receive the first processed first type network signal from the first RF power amplifier and transmit the first processed first type network signal to the second combiner, and to receive the signal from the second combiner and transmit the signal from the second combiner to the second low-noise amplifier.

10. The indoor distribution system according to claim 9, characterized in that, The control module includes a first logarithmic detection module, a second logarithmic detection module, and a sampling control unit; wherein... The first logarithmic detection module is connected to the first radio frequency power amplifier and the sampling control unit respectively, and is used to measure the intensity value of the first type of network signal after the first processing, and send the intensity value of the first type of network signal after the first processing to the sampling control unit. The second logarithmic detection module is connected to the second RF power amplifier and the sampling control unit respectively, and is used to measure the intensity value of the second processed first type network signal and send the intensity value of the second processed first type network signal to the sampling control unit. The sampling control unit is used to receive the intensity value of the first processed first type of network signal from the first logarithmic detection module, and control the first radio frequency power amplifier to process subsequent signals according to the intensity value of the first processed first type of network signal; and is also used to receive the intensity value of the second processed first type of network signal from the second logarithmic detection module, and control the second radio frequency power amplifier to process the subsequent signals according to the intensity value of the second processed first type of network signal; the subsequent signals include signals in the signal stream of the first type of network signal that enter the first sub-link later than the current signal.

11. The indoor distribution system according to claim 10, characterized in that, The control module further includes a signal correction module, a synchronization module, a first switch, and a second switch; wherein... The signal correction module is connected to the first low-noise amplifier and the synchronization module respectively, and is used to correct the signal amplified by the first low-noise amplifier to obtain the corrected signal, and transmit the corrected signal to the synchronization module. The synchronization module is connected to the signal correction module and the sampling control unit respectively, and is used to identify and detect whether the corrected signal is synchronized with the time slot of the base station, and to feed back the detection result to the sampling control unit; The sampling control unit is also used to receive the detection result from the synchronization module, and when the detection result is that the corrected signal is synchronized with the time slot of the base station, to keep the first switch and the second switch closed, and when the detection result is that the corrected signal is not synchronized with the time slot of the base station, to turn off the first switch and the second switch. The first switch is connected in series between the first circulator and the first low-noise amplifier. It is used to disconnect under the control of the sampling control unit to disconnect the signal path between the first circulator and the first low-noise amplifier, and to close under the control of the sampling control unit to form a signal path between the first circulator and the first low-noise amplifier. The second switch is connected in series between the second circulator and the second low-noise amplifier. It is used to disconnect under the control of the sampling control unit to disconnect the signal path between the second circulator and the second low-noise amplifier, and to close under the control of the sampling control unit to form a signal path between the second circulator and the second low-noise amplifier.

12. The indoor distribution system according to claim 1, characterized in that, The first antenna is located outdoors; and / or, in the indoor distribution system, each of the at least one second antenna is located in a different area of ​​one or more indoor spaces.

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