Indoor distribution system

Abstract

The invention 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, and each dual-mode signal amplifier in the at least one dual-mode signal amplifier is in one-to-one correspondence with each second antenna in the at least one second antenna. 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 a 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. And 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 sending the processed signal from the isolator to a second antenna corresponding to the dual-mode signal amplifier. And 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 the terminal. Wherein the signal from the base station comprises a first type of network signal or a second type of network signal.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to an indoor distribution system. Background Art

[0002] Wireless networks are now indispensable in people's lives. However, in scenarios where wireless network signals are difficult to cover (such as basements, high-rise buildings, ships, etc.), signal amplifiers are needed to amplify the signals to ensure the normal transmission of wireless network signals. Generally speaking, a signal amplifier mainly includes an amplifier body, a protection box, and an antenna. A signal enhancement component is set in the amplifier body to amplify the wireless signal, which can play a role in signal amplification.

[0003] As the construction of 5G signal network is rolled out, the co-coverage of 4th Generation Mobile Communication Technology (4G) and 5th Generation Mobile Communication Technology (5G) signals is becoming more and more common. However, the mature signal amplifiers in the current market can only amplify single-standard networks, that is, they can only amplify 4G signals or 5G signals alone. This amplification of single-standard network signals cannot cope with the situation of more and more complex networks. In addition, to amplify 4G and 5G signals at the same time, two different devices need to be installed, which takes up too much space and is costly. Summary of the invention

[0004] The technical problem to be solved by the present invention is that a single-standard network signal amplification cannot cope with the situation of increasingly complex networks, and to achieve simultaneous amplification of 4G signals and 5G signals, two different devices need to be installed, which takes up too much space and is costly.

[0005] In view of the above-mentioned deficiencies of the prior art, the following solutions are provided:

[0006] The present invention provides an indoor distribution system, which 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 to each second antenna in the at least one second antenna. The first antenna is used to receive a signal sent by a base station and send a signal from the base station to the isolator. The signal from the base station includes a first type of network signal or a second type of network signal. The isolator is used to receive a signal from the first antenna and transmit the signal from the first antenna to each dual-mode signal amplifier in the at least one dual-mode signal amplifier. The dual-mode signal amplifier is used to receive a signal from the isolator, amplify the signal from the isolator, 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 a signal from the dual-mode signal amplifier corresponding to the second antenna and send a signal from the dual-mode signal amplifier corresponding to the second antenna to a terminal. The signal from the base station includes a first type of network signal or a second type of network signal.

[0007] Optionally, the dual-mode signal amplifier includes a first combiner, a first communication link, a second communication link, and a second combiner. The first combiner is used to receive a signal from the isolator, and transmit 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, and is used to receive the signal from the first combiner, amplify the first type of network signal in the signal from the first combiner, obtain the first type of network signal after the first processing, and send the first type of network signal after the first processing to the second combiner. The second communication link is connected in parallel with the first communication link, and is used to receive the signal from the first combiner, amplify the second type of network signal in the signal from the first combiner, obtain the first type of network signal after the first processing, and send the first type of network signal after the first processing to the second combiner. The second combiner is used to receive the first type of network signal after the first processing from the first communication link, and send the first type of network signal after the first processing to the second antenna corresponding to the dual-mode signal amplifier, and is used to receive the first type of network signal after the first processing from the second communication link, and send the first type of network signal after the first processing to the second antenna corresponding to the dual-mode signal amplifier.

[0008] Optionally, the first communication link includes a first sub-link and a control module. The first sub-link is used to receive a signal from the first combiner, perform corresponding processing on a first type of network signal in the signal from the first combiner according to a first control signal from the control module, obtain the first type of network signal after the first processing, and send the first type of network signal after the first processing to the second combiner. The control module is connected to the first sub-link and is used to send a first control signal to the first sub-link.

[0009] Optionally, the first sublink includes a first low noise amplifier, a first gain control module, a first driver stage, and a first RF power amplifier connected in series in sequence. The first low noise amplifier is used to receive a 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 used to determine the strength value of the first primary amplified signal and send the strength value of the first primary amplified signal to the control module. The control module is used to determine whether the strength value of the first primary amplified signal meets the first preset condition. If the strength value of the first primary amplified signal meets the first preset condition, the first control signal is not sent to the first RF power amplifier, so that the first RF power amplifier does not amplify the first primary amplified signal. And if the strength value of the first primary amplified signal does not meet the first preset condition, the first control signal is sent to the first RF power amplifier, and the first control signal is used to control the first RF power amplifier to amplify the first primary amplified signal, so that the signal amplified by the first RF power amplifier meets the first preset condition. The first driver stage is used to transmit the first primary amplified signal to the first RF power amplifier. The first radio frequency power amplifier is used to amplify or not amplify the first primary amplified signal under the control of the control module, and obtain a first type of network signal after the first processing.

[0010] Optionally, the second antenna is also used to receive a signal sent by the terminal, and to send a signal from the terminal to the dual-mode signal amplifier corresponding to the second antenna. 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, 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 a signal from each dual-mode signal amplifier in at least one dual-mode signal amplifier, and transmit a signal from each dual-mode signal amplifier in at least one dual-mode signal amplifier to the first antenna. The first antenna is also used to receive a signal from the isolator, and to send a signal from the isolator to the base station. The signal from the terminal includes a first type of network signal and a second type of network signal.

[0011] Optionally, the second combiner is also used to receive a signal from a second antenna corresponding to the dual-mode signal amplifier, and 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 a signal from the second combiner, amplify the first type of network signal in the signal from the second combiner, obtain the first type of network signal after the second processing, and send the first type of network signal after the second processing to the first combiner. The second communication link is also used to receive a signal from the second combiner, amplify the second type of network signal in the signal from the second combiner, obtain the second type of network signal after the second processing, and send the second type of network signal after the second processing to the first combiner. The first combiner is also used to receive the first type of network signal after the second processing from the first communication link, and send the second type of network signal after the second processing to the isolator, and to receive the second type of network signal after the second processing from the second communication link, and send the second type of network signal after the second processing to the isolator.

[0012] Optionally, the first communication link also includes a second sub-link. The second sub-link is used to receive a signal from the second combiner, perform corresponding processing on the first type of network signal in the signal from the second combiner according to the second control signal from the control module, obtain the first type of network signal after the second processing, and send the first type of network signal after the second processing to the first combiner. The control module is also connected to the second sub-link, and is used to send a 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 driver stage and a second RF power amplifier connected in series. The second low noise amplifier is used to receive the first type of network signal in the signal from the second combiner, amplify the first type of network signal in the signal from the second combiner and obtain a second primary amplified signal. The second gain control module is used to determine the strength value of the second primary amplified signal and send the strength value of the second primary amplified signal to the control module. The control module is used to determine whether the strength value of the second primary amplified signal meets the second preset condition. If the strength value of the second primary amplified signal meets the second preset condition, the second control signal is not sent to the second RF power amplifier so that the second RF power amplifier does not amplify the second primary amplified signal. And if the strength value of the second primary amplified signal does not meet the second preset condition, the second control signal is sent to the second RF power amplifier, and the second control signal is used to control the second RF power amplifier to amplify the second primary amplified signal so that the signal amplified by the second RF 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 or not amplify the second primary amplified signal under the control of the control module, and obtain the first type of network signal after the second processing.

[0014] Optionally, the first communication link also includes a first circulator and a second circulator. The first circulator is respectively connected to the first low noise amplifier, the first combiner and the second RF power amplifier, and is used 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 class network signal from the second RF power amplifier, and send the second processed first class network signal to the first combiner. 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 in sequence. The second circulator is respectively connected to the first RF power amplifier, the second combiner and the second low noise amplifier, and is used to receive the first processed first class network signal from the first RF power amplifier and transmit the first processed first class network signal to the second combiner, and is used to 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 includes a first logarithmic detection module, a second logarithmic detection module and a sampling control unit. The first logarithmic detection module is respectively connected to the first RF power amplifier and the sampling control unit, and is used to measure the strength value of the first type of network signal after the first processing, and send the strength value of the first type of network signal after the first processing to the sampling control unit. The second logarithmic detection module is respectively connected to the second RF power amplifier and the sampling control unit, and is used to measure the strength value of the first type of network signal after the second processing, and send the strength value of the first type of network signal after the second processing to the sampling control unit. The sampling control unit is used to receive the strength value of the first type of network signal after the first processing from the first logarithmic detection module, and control the first RF power amplifier to process subsequent signals according to the strength value of the first type of network signal after the first processing. And it is used to receive the strength value of the first type of network signal after the second processing from the second logarithmic detection module, and control the second RF power amplifier to process subsequent signals according to the strength value of the first type of network signal after the second processing. The subsequent signal includes a signal in the signal stream of the first type of network signal that enters the first sublink later than the current signal.

[0016] Optionally, the control module further includes a signal correction module, a synchronization module, a first switch and a second switch. 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 a 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 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, the first switch and the second switch are kept closed, and when the detection result is that the corrected signal is not synchronized with the time slot of the base station, the first switch and the second switch are turned off. The first switch is connected in series between the first circulator and the first low noise amplifier, and is used to be disconnected 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 used 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 used to be disconnected 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 used 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 second antenna in the at least one second antenna of the indoor distribution system is arranged in different areas of one room or different areas of multiple rooms.

[0018] The indoor distribution system provided by the present invention adopts an isolator to solve the problem that in the 5G time-division duplex co-frequency system, when the uplink and downlink frequencies are the same and one device loses synchronization when the devices are started synchronously, it will cause damage to the device during startup. In addition, the dual-mode signal amplifier can simultaneously amplify the first type of network signal (such as 5G signal) and the second type of network signal (such as 4G signal). Under the condition of strict restrictions on base station construction, it can ensure good coverage and network quality of 4G network and 5G network. In addition, the dual-mode signal amplifier is small in size. In the scenario where the hardware laying is limited, the existing 4G network coverage can be used for iterative upgrade of the equipment, which can greatly reduce the cost and laying difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural diagram of an indoor distribution system in an embodiment of the present invention;

[0020] Figure 2 A structural diagram of another indoor distribution system in an embodiment of the present invention;

[0021] Figure 3 A structural diagram of another indoor distribution system in an embodiment of the present invention;

[0022] Figure 4 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0023] Figure 5 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0024] Figure 6 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0025] Figure 7 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0026] Figure 8 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0027] Fig. 9 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0028] Fig.10 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0029] Fig.11 It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0030] Fig.12It is a structural diagram of another indoor distribution system in an embodiment of the present invention;

[0031] Fig.13 A structural diagram of an indoor distribution system in an example of an embodiment of the present invention;

[0032] Fig.14 It is a schematic diagram of a power control in an example of an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] It should be understood that the specific embodiments and drawings described herein are only used to explain the present invention rather than to limit the present invention.

[0035] It can be understood that, in the absence of conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other.

[0036] It can be understood that, for the convenience of description, the drawings of the present invention only show the parts related to the present invention, while the parts irrelevant to the present invention are not shown in the drawings.

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

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

[0039] It is understood that the flowcharts and block diagrams of the present invention illustrate the possible architectures, functions, and operations of the systems, devices, equipment, and methods according to the various embodiments of the present invention. Each box in the flowchart or block diagram may represent a unit, module, program segment, or code, which contains executable instructions for implementing the specified functions. Moreover, each box or combination of boxes in the block diagram and flowchart may be implemented by a hardware-based system that implements the specified functions, or may be implemented 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 invention can be implemented by software or hardware. For example, the units and modules can be located in a processor.

[0041] An embodiment of the present invention provides an indoor distribution system, such as Figure 1As shown, the indoor distribution system 00 includes a first antenna 1, an isolator 2, at least one dual-mode signal amplifier 3 and at least one second antenna 4. Among them, each dual-mode signal amplifier 3 in the at least one dual-mode signal amplifier corresponds to each second antenna 4 in the at least one second antenna. The first antenna 1 is used to receive a signal sent by the base station BS and send a signal from the base station BS to the isolator 2. The signal from the base station BS includes a first type of network signal and a second type of network signal. The isolator 3 is used to receive a 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. The dual-mode signal amplifier 3 is used to receive a signal from the isolator 2, amplify the signal from the isolator 2, obtain the processed signal from the isolator 2, and send the processed signal from the isolator to the second antenna 4 corresponding to the dual-mode signal amplifier 3. The second antenna 4 is used to receive a signal from the dual-mode signal amplifier 3 corresponding to the second antenna 4, and send a signal from the dual-mode signal amplifier 3 corresponding to the second antenna 4 to the terminal UE.

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

[0043] It can be understood that when the first type of network signal is a fifth generation mobile communication technology (5th Generation Mobile Communication Technology, referred to as 5G) signal, due to the same frequency band of 5G time division duplex uplink and downlink, the presence of the isolator 2 can make the dual-mode signal amplifier 3 for receiving signals in at least one dual-mode signal amplifier and the dual-mode signal amplifier 3 for transmitting signals in at least one dual-mode signal amplifier work simultaneously. 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 at least one dual-mode signal amplifier and the maximum allowable non-damaging input power, so that the isolator 2 attenuates the signal, thereby protecting the device power amplifier from being damaged by a strong input signal.

[0044] For example, in at least one dual-mode signal amplifier, the maximum transmission power of a certain dual-mode signal amplifier 3 is 30dB, the maximum input power allowed without damage to another dual-mode signal amplifier 3 is 0dB, and the isolation of the isolator 2 is greater than 30dB, so that 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 is attenuated by 30dB by the high-isolation three-way divider before entering the other dual-mode signal amplifier 3. In other words, the input power of the other dual-mode signal amplifier 3 is 0dB, so that the other dual-mode signal amplifier 3 will not be damaged.

[0045] It is understandable that the positions between the dual-mode signal amplifiers 3 in at least one dual-mode signal amplifier can be set according to the actual application scenario. For example, the positions of the dual-mode signal amplifiers 3 in at least one dual-mode signal amplifier can be set according to the output power, space loss and line loss of the dual-mode signal amplifiers 3 in at least one dual-mode signal amplifier.

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

[0047] It can be understood that the signal from the base station BS includes a first type of network signal and a second type of network signal, and can not only receive the first type of network signal and process the first type of network signal, but also transmit the second type of network signal and process the second type of network signal. The dual-mode signal amplifier 3 in the indoor distribution system 00 provided in the embodiment of the present invention can simultaneously amplify the signals of the first type of network signal and the second type of network signal, and cope with the signal amplification problem under the co-coverage of the 4G network and the 5G network. At the same time, there is no need to install two additional devices. In response to scenarios with restrictions on hardware laying, the existing 4G network coverage can be used to iteratively upgrade the equipment, which can greatly reduce the cost and laying difficulty.

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

[0049] It can be understood that the frequency bands of the first type of network signals and the second type of network signals are significantly different. The second type of network signals mainly use the frequency bands of 700MHz to 2.6GHz, while the first type of network signals use higher frequency bands, such as 3.5GHz, 26GHz and 28GHz, etc. The transmission technologies of the first type of network signals and the second type of network signals are also different. The second type of network signal adopts the more mature LTE technology, which has strong signal penetration ability and coverage. The first type of network signal adopts more advanced technology, such as millimeter wave transmission. Although it has significantly improved the transmission rate and capacity, it is subject to certain limitations in terms of coverage. The indoor distribution system 00 provided in an embodiment of the present invention transmits and processes the first type of network signals by setting a first communication link 32, and transmits and processes the second type of network signals by setting a second communication link 33. The first communication link 32 and the second communication link 33 are connected in parallel, so that both can process the first type of network signals and the second type of network signals at the same time.

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

[0051] Understandably, the technology for amplifying the second type of network signal in the second communication link is relatively mature. For example, a mobile phone signal booster or repeater can be used as the second communication link. In this way, in scenarios where hardware deployment is limited, the existing 4G network coverage can be used to iterate and upgrade the equipment, which can greatly reduce the cost and deployment difficulty.

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

[0053] It can be understood that an enhancement device capable of enhancing the first type of network signal can be provided in the first sub-link 321 to amplify the first type of network signal in the signal from the first combiner 31. According to the requirements of the application scenario, the amplification factor of the first sub-link 321, or the requirement for the amplification of the first type of network signal, can be set in the control module 322, so that the first type of network signal after the first processing can meet the requirements of the application scenario.

[0054] In some embodiments, Figure 4As shown, the first sub-link 321 includes a first low noise amplifier LNA1, a first gain control module ZY1, a first driver stage QD1, and a first RF power amplifier PA1 connected in series in sequence. The first low noise amplifier LNA1 is used to receive the first type of network signal in the signal from the first combiner 31, amplify the first type of network signal in the signal from the first combiner 31 and obtain a first primary amplified signal. The first gain control module ZY1 is used to determine the strength value of the first primary amplified signal and send the strength value of the first primary amplified signal to the control module 322. The control module 322 is used to determine whether the strength value of the first primary amplified signal meets the first preset condition. If the strength value of the first primary amplified signal meets the first preset condition, the first control signal is not sent to the first RF power amplifier, so that the first RF power amplifier PA1 does not amplify the first primary amplified signal. And if the strength value of the first primary amplified signal does not meet the first preset condition, the first control signal is sent to the first RF power amplifier, and the first control signal is used to control the first RF power amplifier PA1 to amplify the first primary amplified signal, so that the signal amplified by the first RF power amplifier PA1 meets the first preset condition. The first driver stage QD1 is used to transmit the first primary amplified signal to the first RF power amplifier PA1. The first RF power amplifier PA1 is used 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 network signal.

[0055] It can be understood that the first low noise amplifier LNA1 can only receive and process signals in the frequency band that conforms to the first type of network signal. Therefore, even if the second type of network signal in the signal from the first combiner 31 enters the first sub-link, it will not be processed by the first low noise amplifier LNA1. 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 back the strength value of the first primary amplified signal to the control module 322. The control module 322 determines whether the strength value of the first primary amplified signal meets the first preset condition. The first preset condition may be that the strength value of the first type of network signal after the first processing cannot be lower than the first preset strength value. If the strength value of the first primary amplified signal meets the first preset condition, the control module 322 controls the first RF power amplifier PA1 to no longer enhance the first primary amplified signal, but directly output the first primary amplified signal. In this case, the first primary amplified signal is the first type of network signal after the first processing. If the strength value of the first primary amplified signal does not meet the first preset condition, the control module 322 controls the first RF power amplifier PA1 to enhance the first primary amplified signal, and determines the amplitude by which the first RF power amplifier PA1 enhances the first primary amplified signal (for example, the control module 322 can set a step size and control the number of enhancement levels of the first RF power amplifier PA1).

[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 strength so that the subsequent circuit can effectively process it. In a wireless communication system, a 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 weak signals as much as possible without introducing too much noise to maintain the signal-to-noise ratio of the system. The first driver stage QD1 can provide sufficient power to drive the subsequent RF power amplifier to ensure signal quality and strength. The first RF power amplifier PA1 is an RF 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 have sufficient power output.

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

[0058] It can be understood that the signal sent by the terminal UE can reach the base station through each second antenna 4 in at least one second antenna, each dual-mode signal amplifier 3 in at least one dual-mode signal amplifier, the isolator 2 and the first antenna 1 in sequence to complete the data uplink.

[0059] In some embodiments, Figure 6 As shown, the second combiner 34 is also used to receive a 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 used to receive a signal from the second combiner 34, amplify the first type of network signal in the signal from the second combiner 34, obtain the first type of network signal after the second processing, and send the first type of network signal after the second processing to the first combiner 31. The second communication link 33 is also used to receive a signal from the second combiner 34, amplify the second type of network signal in the signal from the second combiner 34, obtain the second type of network signal after the second processing, and send the second type of network signal after the second processing to the first combiner 31. The first combiner 31 is also used to receive the first type of network signal after the second processing from the first communication link 32, and send the first type of network signal after the second processing to the isolator 2, and to receive the second type of network signal after the second processing from the second communication link 33, and send the second type of network signal after the second processing to the isolator 2.

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

[0061] In some embodiments, Figure 7As shown, the first communication link 32 also includes a second sub-link 323. The second sub-link 323 is used to receive a signal from the second combiner 34, process the first type of network signal in the signal from the second combiner 34 according to the second control signal from the control module 322, obtain the first type of network signal after the second processing, and send the first type of network signal after the second processing to the first combiner 31. The control module 322 is also connected to the second sub-link 323, and is used to send a second control signal to the second sub-link 323.

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

[0063] In some embodiments, Figure 8 As shown, the second sub-link 323 includes a second low noise amplifier LNA2, a second gain control module ZY2, a second driver stage QD2 and a second RF power amplifier PA2 which are connected in series in sequence. The second low noise amplifier LNA2 is used to receive the first type of network signal in the signal from the second combiner 34, amplify the first type of network signal in the signal from the second combiner 34 and obtain a second primary amplified signal. The second gain control module ZY2 is used to determine the strength value of the second primary amplified signal and send the strength value of the second primary amplified signal to the control module 322. The control module 322 is used to determine whether the strength value of the second primary amplified signal meets the second preset condition. If the strength value of the second primary amplified signal meets the second preset condition, the second control signal is not sent to the second RF power amplifier PA2, so that the second RF power amplifier PA2 does not process the second primary amplified signal. And when the strength value of the second primary amplified signal does not meet the second preset condition, a second control signal is sent to the second RF power amplifier PA2, and the second control signal controls the second RF power amplifier PA2 to amplify the second primary amplified signal so that the signal amplified by the second RF power amplifier PA2 meets the second preset condition. The second driver stage QD2 is used to transmit the second primary amplified signal to the second RF power amplifier PA2. The second RF power amplifier PA2 is used to amplify or not amplify the second primary amplified signal under the control of the control module 322, and obtain the first type of network signal after the second processing.

[0064] It can be understood that the second low noise amplifier LNA2 can only receive and process signals in the frequency band that conforms to the first type of network signal. Therefore, even if the second type of network signal in the signal from the second combiner 34 enters the second sub-link, it will not be processed by the second low noise amplifier LNA2. After the second low noise amplifier LNA2 processes the first type of network signal in the signal from the second combiner 34 and obtains the second primary amplified signal, the second gain control module ZY2 feeds back the strength value of the second primary amplified signal to the control module 322. The control module 322 determines whether the strength value of the second primary amplified signal meets the second preset condition. The second preset condition can be that the strength value of the first type of network signal after the second processing cannot be lower than the second preset strength value. If the strength 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 enhance the second primary amplified signal, but directly output the second primary amplified signal. In this case, the second primary amplified signal is the first type of network signal after the second processing. If the strength value of the second primary amplified signal does not meet the second preset condition, the control module 322 controls the second RF power amplifier PA2 to enhance the second primary amplified signal, and determines the amplitude by which the second RF power amplifier PA1 enhances the second primary amplified signal (for example, the control module 322 can set a step size and control the number of enhancement levels of the second RF power amplifier PA2).

[0065] In some embodiments, Fig. 9 As shown, the first communication link 32 also includes a first circulator HX1 and a second circulator HX2. The first circulator HX1 is respectively connected to the first low noise amplifier LNA1, the first combiner 31 and the second RF power amplifier PA2, and is used to receive the signal from the first combiner 31, transmit the signal from the first combiner 31 to the first low noise amplifier LNA1, and receive the second processed first class network signal from the second RF power amplifier PA2, and send the second processed first class network signal to the first combiner 31. The second circulator HX2 is respectively connected to the first RF power amplifier PA1, the second combiner 34 and the second low noise amplifier LNA2, and is used to receive the first processed first class network signal from the first RF power amplifier PA1 and transmit the first processed first class network signal to the second combiner 34, and is used to receive the signal from the second combiner 34 and transmit the signal from the second combiner 34 to the second low noise amplifier LNA2.

[0066] Understandably, a circulator is a device that allows electromagnetic waves to be transmitted in a unidirectional circular manner, also known as a unidirectional transmitter. Its working principle is based on the characteristics of ferrite materials and the Faraday rotation effect. When an electromagnetic wave is input from a certain port, it will propagate in a specific direction inside the circulator and output from the output port, while the reverse transmission signal is isolated and will not affect normal transmission. In other words, the circulator can isolate signals in different directions to ensure that the signal is transmitted along the expected path. It can isolate the transmit signal and the receive signal to prevent the transmit signal from interfering with the receive signal, thereby improving the communication quality. By isolating the reverse signal, the circulator can prevent the device from being affected by the reflected signal and play a protective role on the device. Especially in high-power RF systems, the circulator can prevent the reflected signal from damaging key equipment such as power amplifiers. The circulator has the characteristics of unidirectional transmission of high-frequency signal energy. It controls the electromagnetic wave to be transmitted in a certain circular direction, realizing unidirectional transmission and isolation of the signal. In addition, the circulator also has the characteristics of small size, wide bandwidth, and low insertion loss.

[0067] It can be understood that the first circulator HX1 and the second circulator HX2 can isolate the signal of the first sublink 321 from the signal of the second sublink 323 and ensure that the direction of the signal flow in the first sublink 321 is downlink and the direction of the signal flow in the second sublink 323 is uplink.

[0068] In some embodiments, Fig.10 As shown, 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 RF power amplifier PA1 and the sampling control unit MCU respectively, and is used to measure the strength value of the first type of network signal after the first processing, and send the strength value of the first type of network signal after the first processing to the sampling control unit MCU. The second logarithmic detection module DS2 is connected to the second RF power amplifier PA2 and the sampling control unit MCU respectively, and is used to measure the strength value of the first type of network signal after the second processing, and send the strength value of the first type of network signal after the second processing to the sampling control unit MCU. The sampling control unit MCU is used to receive the strength value of the first type of network signal after the first processing from the first logarithmic detection module DS1, and control the first RF power amplifier PA1 to process subsequent signals according to the strength value of the first type of network signal after the first processing. And it is used to receive the strength value of the first type of network signal after the second processing from the second logarithmic detection module DS2, and control the second RF power amplifier PA2 to process subsequent signals according to the strength value of the first type of network signal after the second processing. The subsequent signal includes a signal after the current signal enters the first sub-link.

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

[0070] Exemplarily, when the strength value of the first type of network signal after the first processing or the strength value of the first type of network signal after the second processing is too large (for example, exceeds a preset third preset strength value), the sampling control unit MCU can reduce the amplification factors of the first RF power amplifier PA1 and the second RF power amplifier PA2 by gradually reducing the amplification step size or the enhancement level in the processing of subsequent signals, so that the signals amplified by the first RF power amplifier PA1 and the second RF power amplifier PA2 in the subsequent signal amplification work are gradually reduced to an appropriate range.

[0071] It can be understood that by measuring the intensity values ​​of the output signals of the two RF power amplifiers (the first RF power amplifier PA1 and the second RF power amplifier PA2) in real time through 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 RF power amplifier according to the information of these intensity values, which helps to maintain the stability and consistency of the output signal, especially when the signal intensity fluctuates greatly. According to the real-time feedback of the signal strength, the control module MCU can more accurately control the output power of the RF 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 RF power amplifiers, the control module MCU can ensure that the output signal is always kept within the appropriate intensity range, thereby enhancing the transmission quality and reception effect of the signal. In addition, when the output signal intensity of the two RF power amplifiers is too high, the control module MCU can prevent the equipment from being overloaded or damaged by reducing the output power of the RF power amplifier, which helps to extend the service life of the equipment and reduce maintenance costs.

[0072] In some embodiments, Fig.11As shown, the control module 322 also includes a signal correction module XZ, a synchronization module TB, a first switch SPDT1 and a second switch SPDT2. The signal correction module XZ is connected to the first low noise amplifier LNA1 and the synchronization module TB respectively, and is used to correct the signal amplified by the first low noise amplifier LNA1 to obtain a corrected signal, and transmit the corrected signal to the synchronization module TB. The synchronization module TB is connected to the signal correction module XZ and the sampling control unit MCU respectively, and is used 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 MCU. The sampling control unit MCU is used to receive the detection result from the synchronization module TB, and when the detection result is that the corrected signal is synchronized with the time slot of the base station, the first switch SPDT1 and the second switch SPDT2 are kept closed, and when the detection result is that the corrected signal is not synchronized with the time slot of the 5G base station, the first switch SPDT1 and the second switch SPDT2 are turned off. The first switch SPDT1 is connected in series between the first circulator HX1 and the first low noise amplifier LNA1, and is used to be disconnected 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 is used to be 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, and is used to be disconnected 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 is used to be 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, the signal correction module XZ is connected 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 recognized by the synchronization module TB, so that the synchronization module TB can recognize the timestamp of the corrected signal, and determine whether the corrected signal is synchronized with the time slot of the base station according to the timestamp of the corrected signal.

[0074] Exemplarily, when the first type of network signal is a 5G signal, since 5G technology supports large-scale multi-user access, time slot synchronization can ensure that different user devices do not interfere with each other in the same time window. This is particularly important for systems that use time division multiple access or ultra-time division multiplexing mechanisms. In time slot synchronization, each device sends and receives signals in a predetermined time sequence, which can reduce signal overlap and interference caused by time offset and improve signal integrity and quality. Therefore, only when the corrected signal is synchronized with the time slot of the 5G base station, continuing to process and transmit the signal will not cause 5G signal transmission errors. 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 this time, the first communication link is disconnected, and the 5G signal is no longer processed and transmitted.

[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] For example, Fig.12 As shown, the first switch SPDT1 and the second switch SPDT2 may 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 opened, the signal path between the first circulator HX1 and the first low-noise amplifier LNA1 is opened, and the first switch SPDT1 may 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 opened, the signal path between the second circulator HX2 and the second low-noise amplifier LNA2 is opened, and the second switch SPDT2 may 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 exchange with the base station BS. In order to ensure that the first antenna 1 can normally exchange information with the base station BS, the first antenna 1 can be arranged outdoors.

[0079] Exemplarily, the first antenna can use a frequency band customized 5G omnidirectional antenna. When the installation position of the first antenna is limited, the modification ensures that the first antenna 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, the second antennas 4 in the at least one second antenna are respectively disposed in different areas in one room or in different areas in multiple rooms.

[0081] It can be understood that at least one second antenna 4 is respectively arranged at different positions in a room, which can ensure the signal coverage and strength of the room. At least one second antenna 4 is respectively arranged at different positions in multiple rooms, which can ensure the signal coverage and strength of the multiple rooms.

[0082] The following uses an example in which the first type of network signal is a 5G signal and the second type of network signal is a 4G signal to illustrate an indoor distribution system provided by an embodiment of the present invention.

[0083] In this example, Fig.12 and Fig.13 As shown, the indoor distribution system consists of an outdoor receiving antenna (i.e., the first antenna), a high-isolation three-way router (i.e., isolator), a 4G and 5G signal amplifier body (i.e., a dual-mode signal amplifier, also referred to as 4G&5G device below), and an indoor antenna (i.e., the second antenna).

[0084] Among them, the outdoor receiving antenna is used as a signal forwarding device. Usually, there are strict requirements for the installation position of the outdoor receiving antenna. This example uses a 5G omnidirectional antenna customized for the device frequency band. When the antenna installation position is limited, it is ensured that the antenna can receive base station signals from different angles through a 360-degree horizontal lobe to ensure the stable operation of the system.

[0085] In a time division duplex co-frequency system, the uplink and downlink frequencies are the same, such as Fig.13 As shown in the figure, when multiple 4G&5G devices (4G&5G device A and 4G&5G device B) are started synchronously, if one 4G&5G device loses synchronization, it will be damaged during startup. The use of a high-isolation three-way router increases the isolation between devices so that the space loss between the two indoor distributions is greater than 130dB, which can ensure the safe and normal operation of the equipment. In other words, due to the fact that the uplink and downlink of the 5G network are in the same frequency band, the addition of a high-isolation three-way router can make one 4G&5G device in the indoor distribution system send a signal and another 4G&5G device receive a signal. The high-isolation three-way router attenuates the signal and enters another 4G&5G device, thereby protecting the 4G&5G device amplifier from being damaged by a strong input signal.

[0086] For example, Fig.13As shown in the figure, the maximum transmission power of 4G&5G device A is 30dB, and the maximum allowable input power of 4G&5G device B without damage is 0dB, while the isolation of the high-isolation three-way router is greater than 30dB. In this way, even if the signal output by 4G&5G device A enters 4G&5G device B through the high-isolation three-way router, it is attenuated by 30dB by the high-isolation three-way router before entering 4G&5G device B. In other words, the input power of 4G&5G device B is 0dB, so it will not cause damage to 4G&5G device B.

[0087] In addition, illustratively, when the output power of 4G&5G device A and 4G&5G device B is 80dB, if there is no space loss and line loss, the power can reach 160dB, and the high-isolation three-way switch can provide more than 30dB of attenuation. Therefore, when placing 4G&5G device A and 4G&5G device B, it is necessary to ensure that the space loss is around 130dB.

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

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

[0090] When any device of the 5G synchronization module TB loses synchronization, the sampling control unit MCU can forcibly shut down the uplink and downlink PA of the first communication link (i.e., the 5G communication link), destroy the internal closed-loop self-excitation condition of the dual-mode signal amplifier, and 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 sampling control unit MCU can send a soft reset instruction to force a soft start, so as to prevent the problem of being unable to synchronize after the 5G network loses synchronization.

[0091] The P1-level amplifier tubes in the first RF power amplifier PA1 and the second RF power amplifier PA2 are selected to be large tubes that can withstand the input power. The startup of the sampling control unit MCU is changed to gradually release the attenuation to ensure that the P1-level tube is not impacted, and at the same time increase the sampling rate of the sampling control unit MCU software. The P3-level 20W tube is replaced with a 70W tube, and the back-off depth is increased to prevent saturation distortion.

[0092] When the signal amplifier reaches an extremely high load, this example chooses to use the 5G synchronization module to obtain the Reference Signal Receiving Power (RSRP) as the device input calibration parameter, and the Received Signal Strength Indicator (RSSI) as the automatic power control power (ALC) output calibration parameter, and sets the bias to pre-make sufficient channel power redundancy to ensure that the user download rate is not affected under high load.

[0093] For example, Fig.14 As shown, the sampling control unit MCU controls the gain control module to amplify the pilot channel power RSRP and the service channel power of the signal input, so that the first RF 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 existing 32TR 5G base station as an example, the total transmission power is 320W, about 55dBm, its bandwidth is 100M, the number of wireless bearer RBs is 273, and the subcarrier spacing is 30KHZ, then its RSRP pilot power can be calculated as:

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

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

[0097] The first logarithmic detection module DS1 and the second logarithmic detection module DS2 are mainly used to measure RF power, so that the output power of the first RF power amplifier PA1 and the second RF power amplifier PA2 corresponds to a voltage calibration value, which is used as an input parameter for judgment by 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 and supports serial port mode. It is relatively easy to connect to the sampling control unit MCU and can be controlled by only three pins of the general purpose input and output (GPIO) interface of the sampling control unit MCU. For example, the three pins are a DATA pin, a CLK pin and a LE chip select pin, and the DATA pin and the CLK pin can also reuse the bus, which saves the pin resources of the sampling control unit MCU.

[0099] After the logarithmic detection module detects the RF power, it converts it into a voltage input parameter and gives the voltage input parameter to the sampling control unit MCU, so that the sampling control unit MCU can calculate through the embedded algorithm of C language, and then control the digital control attenuator through the three pins of DATA, CLK clock, and LE chip select. In order to ensure that the power control purpose can be achieved quickly, the entire operation 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 loses the purpose of control. As for the choice of ALC or AGC, it depends on different systems. Communication systems will prefer AGC and the cost will be lower, while radio and television broadcasting systems will prefer ALC.

[0100] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

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 to each second antenna in the at least one second antenna in one-to-one correspondence; The first antenna is used to receive a signal sent by a base station and send the signal from the base station to the isolator; the signal from the base station includes a first type of network signal or a second type of network signal; The isolator is used to receive the signal from the first antenna, and transmit 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 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 a signal from a dual-mode signal amplifier corresponding to the second antenna, and to send a signal from the dual-mode signal amplifier corresponding to the second antenna to a terminal.

2. The indoor distribution system according to claim 1, characterized in that: The dual-mode signal amplifier comprises: A first combiner, configured to receive a signal from the isolator and transmit the signal 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 in the signal from the first combiner, amplify the first type of network signal in the signal from the first combiner to obtain the first type of network signal after the first processing, and send the first type of network signal after the first processing to the second combiner; the second communication link is connected in parallel with the first communication link, and is used to receive the signal from the first combiner, amplify the second type of network signal in the signal from the first combiner to obtain the second type of network signal after the first processing, and send the second type of network signal after the first processing to the second combiner; and The second combiner is used to receive the first processed first-type network signal from the first communication link and send the first processed first-type network signal to the second antenna corresponding to the dual-mode signal amplifier, and is used to receive the first processed second-type network signal from the second communication link and send the first processed second-type 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 comprises: a first sublink, configured to receive a signal from the first combiner, perform corresponding processing on a first type of network signal in the signal from the first combiner according to a first control signal from a control module to obtain the first type of network signal after the first processing, and send the first type of network signal after the first 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 in sequence; wherein, The first low noise amplifier is used to receive a 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 used to determine the strength value of the first primary amplified signal and send the strength value of the first primary amplified signal to the control module; The control module is used to determine whether the strength value of the first primary amplified signal meets a first preset condition, and if the strength value of the first primary amplified signal meets the first preset condition, not send the first control signal to the first RF power amplifier, so that the first RF power amplifier does not amplify the first primary amplified signal; and if the strength value of the first primary amplified signal does not meet the first preset condition, send the first control signal to the first RF power amplifier, the first control signal is used to control the first RF power amplifier to amplify the first primary amplified signal, so that the signal amplified by the first RF power amplifier meets the first preset condition; The first driver stage is used to transmit the first primary amplified signal to the first RF power amplifier; The first RF power amplifier is used to amplify or not amplify the first primary amplified signal under the control of the control module, and obtain the first type of network signal after the first processing.

5. The indoor distribution system according to any one of claims 2 to 4, characterized in that: The second antenna is further used to receive a signal sent by the terminal, and send a signal from the terminal to the dual-mode signal amplifier corresponding to the second antenna; the signal from the terminal includes a first type of network signal and a second type of network signal; The dual-mode signal amplifier is also used to receive a signal from a 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 dual-mode signal amplifier in at least one dual-mode signal amplifier, and transmit signals from each dual-mode signal amplifier in at least one dual-mode signal amplifier to the first antenna; The first antenna is also used to receive the signal from the isolator and send the signal from the isolator to the base station.

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

7. The indoor distribution system according to claim 6, characterized in that: The first communication link further comprises: a second sub-link, configured to receive a signal from the second combiner, perform corresponding processing on the first type of network signal in the signal from the second combiner according to a second control signal from the control module, obtain the first type of network signal after the second processing, and send the first type of network signal after the second processing 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 in series; wherein, The second low noise amplifier is used to receive the first type of network signal in the signal from the second combiner, amplify the first type of network signal in the signal from the second combiner and obtain a second primary amplified signal; The second gain control module is used to determine the strength value of the second primary amplified signal and send the strength value of the second primary amplified signal to the control module; The control module is used to determine whether the strength value of the second primary amplified signal meets a second preset condition, and if the strength value of the second primary amplified signal meets the second preset condition, not send the second control signal to the second RF power amplifier, so that the second RF power amplifier does not amplify the second primary amplified signal; and if the strength value of the second primary amplified signal does not meet the second preset condition, send the second control signal to the second RF power amplifier, the second control signal is used to control the second RF power amplifier to amplify the second primary amplified signal, so that the signal amplified by the second RF 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 RF power amplifier is used to amplify or not amplify the second primary amplified signal under the control of the control module, and obtain the first type of network signal after the second processing.

9. The indoor distribution system according to claim 8, characterized in that: The first communication link further comprises: a first circulator, connected to the first low noise amplifier, the first combiner and the second RF power amplifier respectively, for receiving a signal from the first combiner, transmitting the signal from the first combiner to the first low noise amplifier, and for receiving the second processed first type network signal from the second RF power amplifier, and sending the second processed first type network signal to the first combiner; the first sub-link comprises the first low noise amplifier, the first gain control module, the first driver stage, and the first RF power amplifier connected in series in sequence; and a second circulator, connected to the first RF power amplifier, the second combiner and the second low noise amplifier, respectively, for receiving the first processed first-type network signal from the first RF power amplifier and transmitting the first processed first-type network signal to the second combiner, and for receiving a signal from the second combiner and transmitting 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 RF power amplifier and the sampling control unit respectively, and is used to measure the strength value of the first type of network signal after the first processing, and send the strength 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 strength value of the first type of network signal after the second processing, and send the strength value of the first type of network signal after the second processing to the sampling control unit; The sampling control unit is used to receive the strength value of the first-processed first-type network signal from the first logarithmic detection module, and control the first RF power amplifier to process subsequent signals according to the strength value of the first-processed first-type network signal; and is used to receive the strength value of the second-processed first-type network signal from the second logarithmic detection module, and control the second RF power amplifier to process subsequent signals according to the strength value of the second-processed first-type network signal; the subsequent signals include signals in the signal stream of the first-type 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 a 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 feed back the detection result to the sampling control unit; The sampling control unit is further used to receive a 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, keep the first switch and the second switch in a closed state, and when the detection result is that the corrected signal is not synchronized with the time slot of the base station, 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, and is used to be disconnected 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 used 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 used to be disconnected 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 used 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.

12. The indoor distribution system according to claim 1, characterized in that: The first antenna is arranged outdoors; and / or, each second antenna in the at least one second antenna of the indoor distribution system is arranged in different areas of one room or different areas of multiple rooms.

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