Band-stop coupler, indoor distribution system and signal processing method

Abstract

The present invention provides a band-stop coupler, including a band-stop coupler body, wherein the band-stop coupler body includes a directional coupler, a band-stop filter, a first port, a second port, and a third port; wherein the directional coupler is configured to receive a high-frequency network signal and a low-frequency network signal after frequency conversion from the first port and couple the high-frequency network signal after frequency conversion and output it from the third port; the band-stop filter is configured to block the high-frequency network signal after frequency conversion so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network signal is output from the second port. The present invention also provides a signal processing method for a band-stop coupler, an indoor distribution system suitable for 5G network multiplexing signals, and a signal processing method. The present invention greatly reduces the cost of the indoor distribution system and shortens its construction period through the mutual cooperation between the frequency converter, the band-stop coupler, and the antenna.

Description

Technical Field

[0001] The present invention relates to the fields of communication and information, and in particular to a band-stop coupler. Background Art

[0002] With the development of mobile communication technology, the frequencies used are getting higher and higher. Especially in the 5G era, the frequencies are further increased, which brings many new challenges to the deployment of the entire communication network. As of the fourth generation of mobile communication systems, most of the frequencies used by operators are in the frequency band of 700MHz to 2700MHz. Therefore, the existing indoor distribution systems are built according to this frequency requirement, that is, the specifications of various devices used are all 700MHz to 2700MHz; even some of the earlier built systems are even narrower, only 800MHz-2500MHz. As we all know, the frequency bands for 5G construction in my country mainly include 2600MHz, 3500MHz, and 4900MHz. Millimeter waves will also be used in the future, and the mainstream 3500MHz exceeds the operating frequency range of the existing indoor distribution system and cannot be transmitted in it.

[0003] Therefore, if the 3500MHz 5G network needs to cover indoor areas, it is necessary to rebuild an indoor coverage system consisting of devices that meet the 3500MHz requirements. This will bring various problems, such as huge investment and long construction period, which hinders the rapid development of 5G; it is difficult to communicate with the owners because a large-scale construction of the building is required, and existing technologies cannot solve these problems. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a band-stop coupler.

[0005] The present invention reduces the cost of the indoor distribution system and shortens the construction period by providing a system.

[0006] The present invention provides a band-stop coupler, comprising a band-stop coupler body, wherein the band-stop coupler body comprises a directional coupler, a band-stop filter, a first port, a second port, and a third port, wherein the band-stop filter is connected to the rear end of the directional coupler; wherein:

[0007] The directional coupler is configured to receive the high-frequency network signal and the low-frequency network signal after frequency conversion from the first port, couple the high-frequency network signal after frequency conversion and output it from the third port;

[0008] The band-stop filter is configured to block the high-frequency network signal after frequency conversion, so as to separate the low-frequency network signal from the high-frequency network signal, and the low-frequency network signal is output from the second port.

[0009] Preferably, the band-stop coupler body comprises a main rod, and the main rod connects the directional coupler and the band-stop filter; the main rod is used to transmit the high-frequency network signal and the low-frequency network signal.

[0010] Preferably, the directional coupler comprises a secondary rod, and the secondary rod is used to couple out the high-frequency network signal transmitted in the main rod, so that the high-frequency network signal is outputted from the third port alone.

[0011] Preferably, the auxiliary rod is connected to a load, and the load is used to assist the auxiliary rod in coupling out the high-frequency network signal transmitted in the main rod.

[0012] Preferably, the band-stop filter includes a plurality of tuning rods, which block the transmission of the high-frequency network signal transmitted in the main rod by adjusting the frequency, so that the low-frequency network signal transmitted in the main rod is outputted from the second port alone.

[0013] Preferably, the high-frequency network is a 5G network; and the low-frequency network is one or more of 2G, 3G, and 4G networks.

[0014] The present invention also provides a signal processing method of a band-stop coupler, comprising the following steps:

[0015] The high-frequency network signal received from the first port is coupled with the low-frequency network signal by a directional coupler, and the high-frequency network signal after frequency conversion is output from the third port;

[0016] The high-frequency network signal after frequency conversion is blocked by a band-stop coupler, so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network is output from the second port.

[0017] The present invention also provides an indoor distribution system suitable for 5G network multiplexing signals, including the above-mentioned band-stop coupler; and also includes: a frequency converter and an antenna; wherein,

[0018] The frequency converter is configured to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device; wherein the operating frequency of the current indoor distribution device includes the frequency threshold range corresponding to the high frequency network after the frequency conversion;

[0019] The antenna is configured to receive the high-frequency network or low-frequency network signal and transmit the received signal so that the terminal can receive it.

[0020] Preferably, the frequency converter includes an up-converter and a down-converter; wherein,

[0021] The down converter is configured to convert the high frequency threshold range corresponding to the high frequency network to the low frequency threshold range corresponding to the low frequency network, so that the high frequency network can be transmitted in the current indoor distribution device; wherein the use frequency of the current indoor distribution device is the low frequency threshold range corresponding to the low frequency network;

[0022] The up-converter is configured to convert the low frequency threshold range corresponding to the high frequency network into a high frequency threshold range.

[0023] Preferably, the antenna includes a high-frequency antenna and a low-frequency antenna; wherein,

[0024] The high frequency antenna and the low frequency antenna are configured to receive the signals sent by the high frequency network and the low frequency network respectively and transmit the two respectively so that the terminal can receive them.

[0025] The present invention also provides a signal processing method suitable for indoor distribution of 5G network multiplexed signals, comprising the following steps:

[0026] Using a frequency converter to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device;

[0027] A plurality of band-stop couplers are configured to separate the low-frequency network signal from the high-frequency network signal for separate transmission; wherein the current use frequency of the indoor distribution device is the low-frequency threshold range corresponding to the low-frequency network;

[0028] The low-frequency network signal or the high-frequency network signal is received by using an antenna and the received signal is transmitted so that the terminal can receive it.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention discloses a band-stop coupler, an indoor distribution system suitable for 5G network multiplexing signals, and a signal processing method. The band-stop coupler comprises a directional coupler and a band-stop filter. The 5G network signal is coupled out by the directional coupler and output separately. The 5G network signal is filtered by the band-stop filter so that 2G, 3G, and 4G network signals are output separately. The band-stop coupler allows the 5G network signal and the 2G, 3G, and 4G network signals to be output separately, so that the 5G network signal is suitable for current indoor distribution devices, avoiding construction on the walls of buildings; and greatly reducing the construction period.

[0031] The system significantly reduces the cost of indoor distribution systems and shortens their construction period through the coordination between frequency converters, band-stop couplers and antennas. In addition, in the process of building the overall 5G indoor distribution system, comprehensive construction of the entire building is required, which involves a large amount of wall opening and internal network transformation of the building, and the transformation period is long.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 It is a schematic diagram of a mobile communication indoor distribution system in the prior art;

[0035] Figure 2 A logic schematic diagram of a band-stop coupler of the present invention;

[0036] Figure 3 It is a structural schematic diagram of a band-stop coupler of the present invention;

[0037] Figure 4 A simulation curve diagram of a band-stop coupler of the present invention;

[0038] Figure 5 A schematic diagram of an indoor distribution system suitable for 5G network multiplexing signals of the present invention;

[0039] Figure 6 This is a module diagram of an indoor distribution system suitable for 5G network multiplexing signals of the present invention;

[0040] Figure 7 It is an overall flow chart of a signal processing method suitable for indoor distribution of 5G network multiplexing signals of the present invention;

[0041] Figure 8 A flow chart of a signal processing method of a band-stop filter of the present invention;

[0042] Reference numerals: 100, directional coupler, 110, secondary rod, 120, load, 200, band-stop filter, 210, tuning rod, 300, main rod, 410, first port, 420, second port, 430, third port. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] The present invention provides a band-stop coupler. The present invention focuses on the indoor distribution system, also known as the indoor coverage system. Indoor distribution devices mainly include cables, combiners, power dividers, couplers, indoor antennas, etc. Indoor coverage systems are mainly distributed in buildings, stadiums and other places, and are used to transmit wireless signals to each floor or even each room. The present invention mainly solves the technical problem of how to reuse existing 2G, 3G, and 4G network signals for indoor coverage when 5G network signals are used for indoor coverage.

[0045] like Figure 1 As shown in the figure, as of the fourth generation mobile communication system, most of the frequencies used by operators are in the frequency band of 700MHz to 2700MHz. Therefore, the existing indoor distribution systems are all built in accordance with this frequency requirement, that is, the specifications of various devices used therein are all from 700MHz to 2700MHz; even some of the earlier built systems are even narrower, only 800MHz-2500MHz.

[0046] The present invention provides a band-stop coupler, such as Figure 2-4 As shown, it includes a band-stop coupler body, the band-stop coupler body includes a directional coupler, a band-stop filter, a first port, a second port, and a third port, and the band-stop filter is connected to the rear end of the directional coupler; wherein,

[0047] The directional coupler is configured to receive the high-frequency network signal and the low-frequency network signal after frequency conversion from the first port, couple the high-frequency network signal after frequency conversion and output it from the third port;

[0048] The band-stop filter is configured to block the high-frequency network signal after frequency conversion so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network signal is output from the second port. In some embodiments, the high-frequency network is a 5G network, and the low-frequency network is a 2G, 3G, or 4G network. Generally, the frequency of a 5G network signal is 3500MHz, while the operating frequency range of current indoor distribution devices is 700MHz-2700MHz, so the operating frequency of the 5G network signal cannot be transmitted on the current indoor distribution device. In this embodiment, the operating frequency of the 5G network signal is converted by a frequency converter so that the 5G network signal after frequency conversion can be transmitted on the current indoor distribution device.

[0049] The low-frequency network signal is separated from the high-frequency network signal by a band-stop coupler for separate output. When transmitted to the end of the system, the 5G antenna and the 4G antenna are used to receive the signal and transmit the received signal so that mobile phones, computers and other terminals can receive it. Among them, the low-frequency network signal is a combination of one or more of the 2G, 3G, and 4G network signals. The 4G network signal below represents a combination of one or more of the 2G, 3G, and 4G network signals.

[0050] Specifically, the band-stop coupler body includes a main rod, the main rod connects the directional coupler and the band-stop filter; the main rod is used to transmit the high-frequency network signal and the low-frequency network signal. The directional coupler includes a secondary rod, the secondary rod is used to couple out the high-frequency network signal transmitted in the main rod, so that the high-frequency network signal is output from the third port alone. Preferably, the secondary rod is connected to a load, and the load is used to assist the secondary rod in coupling out the high-frequency network signal transmitted in the main rod.

[0051] The band-stop filter includes a plurality of tuning rods, which block the transmission of the high-frequency network signal transmitted in the main rod by adjusting the frequency, so that the low-frequency network signal transmitted in the main rod is outputted from the second port alone.

[0052] In some embodiments, Figure 2 As shown in the figure, the arrow is the transmission direction of the signal. When the directional coupler couples the converted 5G network signal to the 5G up-conversion and 5G antenna, the 4G network continues to transmit to the band-stop filter. During the transmission of the 4G network signal, the 5G network signal is also transmitted at the same time. When the 5G network signal is transmitted to the band-stop filter, the band-stop filter is used to block the 5G network signal.

[0053] like Figure 3 The schematic diagram of the band-stop coupler shown in the figure shows that the directional coupler 100 and the band-stop filter 200 can be made by a printed circuit board, or can be formed by a metal cavity plus a metal rod. The 4G network signal and the 5G network signal after the down-converter frequency conversion enter from the first port 410 and are transmitted in the main rod 300. The 5G network signal transmitted in the main rod 300 is coupled out through the auxiliary rod 110 and the load 120, wherein the load 120 assists the auxiliary rod 110 to couple out the 5G network signal, and the coupled 5G network signal is transmitted to the subsequent connection circuit through the third port 430, and then frequency conversion processing is performed; the tuning rod 210 is used to block the 5G signal in the main rod by adjusting the frequency, so that the 2G, 3G, and 4G network signals are transmitted from the second port 420.

[0054] like Figure 4As shown, line 2 is the output signal of the network signal at the third port, and the signal amplitude of line 2 is -20dB, which is relative to the input signal of the first port. Curve 1 is the output signal of the second port, and the signal amplitude of curve 1 is -3dB, which is relative to the input signal of the first port. From curve 1, it can be seen that the 5G signal in the frequency range of 0.96-1.71GHz is blocked. It should be noted that the specific values ​​of the signal amplitudes of -20dB and -3dB in the figure are just examples.

[0055] The present invention also provides a signal processing method of a band-stop filter, such as Figure 8 As shown, the following steps are included:

[0056] S101, using a directional coupler to couple a high-frequency network signal received from the first port with a low-frequency network signal, and outputting the high-frequency network signal after frequency conversion from a third port;

[0057] S102: Using a band-stop coupler to block the high-frequency network signal after frequency conversion, so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network is output from the second port.

[0058] The present invention also provides an indoor distribution system suitable for 5G network multiplexing signals, such as Figure 5 , Figure 6 As shown, it includes a band-stop coupler; it also includes: a frequency converter and an antenna; wherein,

[0059] The frequency converter is configured to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device; wherein the operating frequency of the current indoor distribution device includes the frequency threshold range corresponding to the high frequency network after the frequency conversion;

[0060] The antenna is configured to receive the high-frequency network or low-frequency network signal and transmit the received signal so that the terminal can receive it.

[0061] Specifically, the frequency converter includes an up-converter and a down-converter; wherein,

[0062] The down converter is configured to convert the high frequency threshold range corresponding to the high frequency network to the low frequency threshold range corresponding to the low frequency network, so that the high frequency network can be transmitted in the current indoor distribution device; wherein the use frequency of the current indoor distribution device is the low frequency threshold range corresponding to the low frequency network;

[0063] The up-converter is configured to convert the low frequency threshold range corresponding to the high frequency network to the high frequency threshold range. In some embodiments, the down-converter is used to convert the 5G signal to a frequency range of 1.1 GHz-1.7 GHz, i.e., a frequency range corresponding to the 4G network signal; and the 5G network signal after the frequency conversion still carries useful information, which is convenient for the current indoor distributed device transmission, while the 4G network signal is not affected and continues to be transmitted.

[0064] The current operating frequency of indoor distributed devices is generally 700MHz-2700MHz, while the frequency ranges used for 2G, 3G, and 4G communications are mainly 700MHz-960MHz and 1700MHz-2700MHz. The middle segment of 1000MHz-1700MHz is an idle frequency band, and the 5G network can be transmitted in this frequency range after frequency conversion using a downconverter.

[0065] Specifically, the antenna includes a high-frequency antenna and a low-frequency antenna; wherein,

[0066] The high frequency antenna and the low frequency antenna are configured to receive the signals sent by the high frequency network and the low frequency network respectively and transmit the two signals respectively so that the terminal can receive them. Figure 5 As shown, the high-frequency antenna, i.e., 5G, is used to receive the 5G network signal coupled by the directional coupler; the low-frequency antenna, i.e., 2 / 3 / 4G antenna, is used to receive the 2G, 3G, and 4G network signals. Of course, before the high-frequency antenna receives the signal, it is necessary to use an up-converter to convert the frequency of the previously converted 5G network signal to the high-frequency threshold range, and then use the high-frequency antenna to receive the 5G network signal and transmit it, which is convenient for mobile phones, computers, and other terminals to receive it.

[0067] The present invention also provides a signal processing method suitable for indoor distribution of 5G network multiplexed signals, such as Figure 7 As shown, the following steps are included:

[0068] S1. Use a frequency converter to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device. In one embodiment, specifically, use a down converter to convert the high frequency threshold range corresponding to the high frequency network to the low frequency threshold range corresponding to the low frequency network so that the high frequency network can be transmitted in the current indoor distribution device.

[0069] S2. Configure a plurality of band-stop couplers to separate the low-frequency network signal from the high-frequency network signal for separate transmission; wherein the current use frequency of the indoor distribution device is the low-frequency threshold range corresponding to the low-frequency network. In one embodiment, specifically, the steps include:

[0070] S21. Using a directional coupler, couple the high-frequency network signal after frequency conversion to an up-converter and a high-frequency antenna.

[0071] S22. A band-stop filter connected after the directional coupler filters the high-frequency network signal so that only the low-frequency network signal passes through.

[0072] S23: Utilize an up-converter to convert the low frequency threshold range corresponding to the high frequency network into a high frequency threshold range.

[0073] S3, using an antenna to receive the low-frequency network signal or the high-frequency network signal and transmitting the received signal so that the terminal can receive it. In one embodiment, using a high-frequency antenna to receive the high-frequency network signal after the up-converter frequency conversion and transmitting it;

[0074] The low-frequency network signal is received and transmitted using a low-frequency antenna, so that the terminal can receive the signal.

[0075] The present invention discloses a band-stop coupler, an indoor distribution system suitable for 5G network multiplexing signals, and a signal processing method. The band-stop coupler comprises a directional coupler and a band-stop filter. The 5G network signal is coupled out by the directional coupler and output separately. The 5G network signal is filtered by the band-stop filter so that 2G, 3G, and 4G network signals are output separately. The band-stop coupler allows the 5G network signal and the 2G, 3G, and 4G network signals to be output separately, so that the 5G network signal is suitable for current indoor distribution devices, avoiding construction on the walls of buildings; and greatly reducing the construction period.

[0076] The system significantly reduces the cost of indoor distribution systems and shortens their construction period through the coordination between frequency converters, band-stop couplers and antennas. In addition, in the process of building the overall 5G indoor distribution system, comprehensive construction of the entire building is required, which involves a large amount of wall opening and internal network transformation of the building, and the transformation period is long.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A band-stop coupler, characterized in that: The invention comprises a band-stop coupler body, wherein the band-stop coupler body comprises a directional coupler, a band-stop filter, a first port, a second port, and a third port, and the band-stop filter is connected to the rear end of the directional coupler; wherein, The directional coupler is configured to receive the high-frequency network signal and the low-frequency network signal after frequency conversion from the first port, couple the high-frequency network signal after frequency conversion and output it from the third port; The band-stop filter is configured to block the high-frequency network signal after frequency conversion, so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network signal is output from the second port; the band-stop coupler body includes a main rod, and the main rod connects the directional coupler and the band-stop filter; the main rod is used to transmit the high-frequency network signal and the low-frequency network signal; The band-stop filter includes a plurality of tuning rods, which block the transmission of the high-frequency network signal transmitted in the main rod by adjusting the frequency, so that the low-frequency network signal transmitted in the main rod is outputted from the second port alone.

2. A band-stop coupler as claimed in claim 1, characterized in that: The directional coupler includes a secondary rod, and the secondary rod is used to couple out the high-frequency network signal transmitted in the main rod, so that the high-frequency network signal is outputted from the third port alone.

3. A band-stop coupler as claimed in claim 2, characterized in that: The auxiliary rod is connected to a load, and the load is used to assist the auxiliary rod in coupling out the high-frequency network signal transmitted in the main rod.

4. A band-stop coupler according to any one of claims 1 to 3, characterized in that: The high-frequency network is a 5G network; the low-frequency network is one or more of a 2G, 3G, and 4G network.

5. A signal processing method for a band-stop coupler, characterized in that: Using the band-stop coupler as claimed in claim 1; comprising the following steps: The high-frequency network signal received from the first port is coupled with the low-frequency network signal by a directional coupler, and the high-frequency network signal after frequency conversion is output from the third port; The high-frequency network signal after frequency conversion is blocked by a band-stop coupler, so that the low-frequency network signal is separated from the high-frequency network signal, and the low-frequency network is output from the second port.

6. An indoor distribution system suitable for 5G network multiplexing signals, characterized in that: The invention comprises the band-stop coupler as claimed in claim 1; and further comprises: a frequency converter and an antenna; wherein: The frequency converter is configured to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device; wherein the operating frequency of the current indoor distribution device includes the frequency threshold range corresponding to the high frequency network after the frequency conversion; The antenna is configured to receive the high-frequency network or low-frequency network signal and transmit the received signal so that the terminal can receive it.

7. An indoor distribution system suitable for 5G network multiplexing signals as claimed in claim 6, characterized in that: The frequency converter includes an up-converter and a down-converter; wherein, The down converter is configured to convert the high frequency threshold range corresponding to the high frequency network to the low frequency threshold range corresponding to the low frequency network, so that the high frequency network can be transmitted in the current indoor distribution device; wherein the use frequency of the current indoor distribution device is the low frequency threshold range corresponding to the low frequency network; The up-converter is configured to convert the low frequency threshold range corresponding to the high frequency network to a high frequency threshold range; The antenna includes a high-frequency antenna and a low-frequency antenna; wherein, The high frequency antenna and the low frequency antenna are configured to receive the signals sent by the high frequency network and the low frequency network respectively and transmit the two respectively so that the terminal can receive them.

8. A signal processing method suitable for indoor distribution of 5G network multiplexed signals, characterized in that: Using the band-stop coupler as claimed in claim 1; comprising the following steps: Using a frequency converter to convert the high frequency threshold corresponding to the high frequency network so that the high frequency network can be transmitted in the current indoor distribution device; A plurality of band-stop couplers are configured to separate the low-frequency network signal from the high-frequency network signal for separate transmission; wherein the current use frequency of the indoor distribution device is the low-frequency threshold range corresponding to the low-frequency network; The low-frequency network signal or the high-frequency network signal is received by using an antenna and the received signal is transmitted so that the terminal can receive it.

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