A 5G fronthaul MWDM device and system

Abstract

The embodiment of the present invention discloses a 5G fronthaul MWDM device and system. The 5G fronthaul MWDM device includes: a wave combiner and splitter module, which is used to obtain an optical signal and obtain a corresponding electrical signal based on the optical signal; the input end of the optical power acquisition module is connected to the output end of the wave combiner and splitter module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, which is used to obtain a specified voltage value from the electrical signal; the output end of the central processing unit system is connected to the input end of the wave combiner and splitter module, which is used to convert the specified voltage value to obtain the corresponding optical power and provide a viewing function. The solution provided by the present invention can improve the application limitations in the fronthaul field in 5G communication.

Description

Technical Field

[0001] The present invention relates to the field of communication technology applications, and in particular to a 5G fronthaul MWDM device and system. Background Art

[0002] With the development of the times and the advancement of science and technology, 5G networks are booming. People's living standards are improving and demands are growing, resulting in various new access devices requiring higher-quality network support. The demands for video services, unmanned driving, telemedicine, etc. are constantly increasing, and it is necessary to match relevant communication equipment to achieve high-quality development while ensuring relative security, large bandwidth and low latency.

[0003] In the 5G transmission network, it is divided into fronthaul, midhaul and backhaul. In the 5G fronthaul, in order to ensure the stable transmission of the optical fiber line, different connection methods are adopted. Among them, there are three methods in the fronthaul field: optical fiber direct drive, passive and active.

[0004] The first method is the direct fiber drive method. This method has low signal transmission latency, but it consumes a lot of related fiber resources, is costly, and takes a long time to open new services.

[0005] Method 2 uses passive wavelength division multiplexing to connect, which saves fiber resources and has low latency, but cannot provide protection or management.

[0006] The third method is to use active equipment to monitor the line in real time and provide protection, but the cost is high, the subsequent maintenance is more complicated, and the power consumption is high.

[0007] With regard to the above-mentioned problem of application limitations of existing technologies in the fronthaul field of 5G communications, no effective solution has been proposed so far. Summary of the invention

[0008] In order to solve the above technical problems, the embodiments of the present invention hope to provide a 5G fronthaul MWDM device and system to at least solve the problem of application limitations of the prior art in the fronthaul field in 5G communications.

[0009] The technical solution of the present invention is achieved in this way:

[0010] In the first aspect, an embodiment of the present invention provides a 5G fronthaul MWDM device, comprising: a wave combining and decomposing module, an optical power acquisition module and a central processing unit system, wherein the wave combining and decomposing module is used to obtain an optical signal and obtain a corresponding electrical signal based on the optical signal; the input end of the optical power acquisition module is connected to the output end of the wave combining and decomposing module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, for obtaining a specified voltage value from the electrical signal; the output end of the central processing unit system is connected to the input end of the wave combining and decomposing module, for converting the specified voltage value to obtain the corresponding optical power and providing a viewing function; the output end of the second analog switch is connected to the output end of the amplifier, the input end of the first analog switch is connected to the negative input end of the amplifier, and the output end of the first analog switch is connected to the central processing unit system.

[0011] Optionally, the wavelength combining and demultiplexing module includes: a splitter and a sensor, wherein the splitter is used to obtain an optical signal from the main line; the sensor is connected to the splitter and is used to convert the optical signal into an electrical signal and transmit the electrical signal to the optical power collection module.

[0012] Further, optionally, the sensor includes: a photoelectric sensor.

[0013] Optionally, the collection optical power range of the first analog switch or the second analog switch is +10 to -70 dBm.

[0014] Optionally, the first analog switch or the second analog switch includes: an eight-to-one analog switch, wherein the specification of the eight-to-one analog switch is: 74HC4051PW.

[0015] Optionally, the central processing unit system is used to read the corresponding specified voltage value through the corresponding channel and convert it into the corresponding optical power.

[0016] Optionally, the 5G fronthaul MWDM device further includes: a power module and an indicator light.

[0017] In a second aspect, an embodiment of the present invention provides a communication system, comprising: a 5G fronthaul MWDM device and a remote device, wherein a front-end communication device communicates with the remote device, the front-end communication device is connected to a plurality of distribution units, and the remote device is connected to a plurality of active antenna processing units, wherein the front-end communication device comprises the above-mentioned 5G fronthaul MWDM device.

[0018] The embodiment of the present invention provides a 5G fronthaul MWDM device and system. Through the wave combiner and splitter module, it is used to obtain the optical signal, and obtain the corresponding electrical signal according to the optical signal; the input end of the optical power acquisition module is connected to the output end of the wave combiner and splitter module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, which is used to obtain the specified voltage value from the electrical signal; the output end of the central processing unit system is connected to the input end of the wave combiner and splitter module, which is used to convert the specified voltage value to obtain the corresponding optical power, and provide a viewing function, so as to improve the application limitations in the fronthaul field in 5G communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 A schematic diagram of a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention;

[0021] Figure 2 A schematic diagram of an optical power acquisition module in a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention;

[0022] Figure 3a and Figure 3b A structure diagram of an optical power reading control range in a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention;

[0023] Figure 4 A high-precision design diagram for optical power detection in a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention;

[0024] Figure 5 A schematic diagram of a communication system provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second" and the like in the specification, claims and drawings of the present invention are used to distinguish different objects rather than to limit a specific order.

[0027] It should also be noted that the following embodiments of the present invention may be executed separately, or in combination with each other, and the embodiments of the present invention do not impose any specific limitations on this.

[0028] Technical terms provided in the embodiments of this application:

[0029] Active Antenna Unit: AAU is responsible for modulating the baseband digital signal and transmitting it through the antenna.

[0030] Distributed Unit: Distribute Unit, referred to as DU, is responsible for processing physical layer protocols and real-time services, such as allocation of wireless resources.

[0031] Embodiment 1

[0032] In a first aspect, an embodiment of the present invention provides a 5G fronthaul MWDM device, Figure 1 A schematic diagram of a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention; Figure 1 As shown, the 5G fronthaul MWDM device provided in the embodiment of the present application includes:

[0033] The wave combining and demultiplexing module 1-1, the optical power acquisition module 1-3 and the central processing unit system 1-2, wherein the wave combining and demultiplexing module 1-1 is used to obtain the optical signal and obtain the corresponding electrical signal based on the optical signal; the input end of the optical power acquisition module 1-3 is connected to the output end of the wave combining and demultiplexing module 1-1, and the output end of the optical power acquisition module 1-3 is connected to the input end of the central processing unit system 1-2, and is used to obtain a specified voltage value from the electrical signal; the output end of the central processing unit system 1-2 is connected to the input end of the wave combining and demultiplexing module 1-1, and is used to convert the specified voltage value to obtain the corresponding optical power, and provide a viewing function.

[0034] Specifically, Figure 1 As shown, the 5G fronthaul MWDM device provided in the embodiment of the present application is marked as 1, and the optical module output optical signal obtained by the combining and decomposing module 1-1 is converted into an electrical signal by the photoelectric sensor in the combining and decomposing module 1-1 and transmitted to the amplifier circuit in the optical power collection module 1-3 through the baseboard. After amplification, it is input into the ADC conversion channel of the CPU (that is, the central processing unit system 1-2 in the embodiment of the present application) and the corresponding value is read by the CPU.

[0035] Optionally, the wavelength combining and decomposing module 1-1 includes: a splitter and a sensor, wherein the splitter is used to obtain an optical signal from the main line; the sensor is connected to the splitter and is used to convert the optical signal into an electrical signal and transmit the electrical signal to the optical power collection module 1-3.

[0036] Further, optionally, the sensor includes: a photoelectric sensor.

[0037] Specifically, the combining and decomposing module 1-1 itself contains a spectrometer and a sensor. In the embodiment of the present application, the sensor includes a photoelectric sensor; the spectrometer is responsible for separating 1% of the light from the main line, and the photoelectric sensor converts the optical signal into an electrical signal, which is then sent to the optical power collection module 1-3.

[0038] Optionally, the optical power collection module 1-3 includes: a first analog switch 1-3-1, a second analog switch 1-3-2 and an amplifier 1-3-3, wherein after the first analog switch and the second analog switch select corresponding gears, the electrical signal is input into the amplifier.

[0039] Further, optionally, the first analog switch and the second analog switch are connected in parallel, the output end of the second analog switch is connected to the output end of the amplifier, the input end of the first analog switch is connected to the negative input end of the amplifier, and the output end of the first analog switch is connected to the central processing unit system 1-2.

[0040] Optionally, the collection optical power range of the first analog switch or the second analog switch is +10 to -70 dBm.

[0041] Optionally, the first analog switch or the second analog switch includes: an eight-to-one analog switch, wherein the specification of the eight-to-one analog switch is: 74HC4051PW.

[0042] Specifically, the signal obtained in the wavelength combining and demultiplexing module 1-1 is input to the optical power collection module 1-3 through the optical splitter and the photoelectric sensor. Figure 2 A schematic diagram of an optical power acquisition module in a 5G fronthaul MWDM device provided in Embodiment 1 of the present invention, such as Figure 2 As shown, after the two eight-to-one analog switches select the corresponding gear, they are input into the amplifier, and then input into the eight-to-one analog switch through the amplifier. The six channels obtain the optical power of the corresponding wavelength and the optical power of the two main and backup channels, as shown in Figure 3a and Figure 3b As shown, Figure 3a and Figure 3b This is a structural diagram of the optical power reading control range in a 5G fronthaul MWDM device provided in Example 1 of the present invention.

[0043] When selecting a multi-channel analog switch, the corresponding on-resistance will affect the signal processing. There is an on-resistance of about 100 ohms inside. According to the principle of virtual short and virtual disconnection of the amplifier, no current flows through the reverse input pin of the amplifier, but all current is added to the feedback resistor Rf.

[0044] Then it is easy to get the calculation formula of Vo:

[0045] Vo = (Rf + R2) * I;

[0046] The conventional principle is to collect the Vo voltage value for calculating the optical power, but the optical power value is affected by the uncertain value of the on-resistance R2, and there is an error, especially when the light is relatively high, the error will be greater.

[0047] In the embodiment of the present application, in order to eliminate the error, an analog switch is connected in parallel to the original analog switch, and the output voltage of the analog switch at the parallel end is collected as the corresponding voltage value of the actual optical power. The analog switch does not exist in the loop of the amplifier and can read the voltage drop after the feedback resistor. The calculation formula is as follows:

[0048] V1=(Rf+R1)*I;

[0049] The influence of on-resistance can be effectively avoided by detecting two analog switches.

[0050] In the embodiment of the present application, the optical power collection modules 1-3 are as follows: Figure 4 As shown, Figure 4 A high-precision design diagram for optical power detection in a 5G fronthaul MWDM device provided in Example 1 of the present invention.

[0051] It consists of two eight-to-one analog switch chips and an amplifier, and can read the output optical power with high precision within the range of +10 to -70dB.

[0052] Optionally, the central processing unit system 1-2 is used to read the corresponding specified voltage value through the corresponding channel and convert it into the corresponding optical power.

[0053] The central processing unit system 1-2 in the embodiment of the present application may be STM32F107 or GD32F307. In the embodiment of the present application, the central processing unit system 1-2 is recorded as a CPU, wherein the CPU reads, manages and displays the read optical power.

[0054] Optionally, the 5G fronthaul MWDM device provided in the embodiment of the present application also includes: a power module and an indicator light.

[0055] The power module includes: a power chip. In the embodiment of the present application, the power chip may be MP1484 or MP1482.

[0056] It should be noted that the embodiments of the present application are only described using the above examples as examples, and are based on the 5G fronthaul MWDM equipment provided in the embodiments of the present application, without specific limitations.

[0057] Compared with the existing technology, the 5G fronthaul MWDM equipment provided in the embodiment of the present application monitors the information of the central office optical module in real time. It can also read the optical power of the corresponding wavelength remotely to understand the working condition of the line. The optical power at the remote end is collected at the corresponding wavelength, which is less susceptible to interference. It can also collect optical power within the range of +10 to -70dBm, with a wide range and high accuracy. And the use of two 74HC4051PW analog switch chips has a small error, the optical power error will not exceed 3dBm, and the error after adjustment will not exceed 1dBm.

[0058] The purpose of the 5G fronthaul MWDM device provided in the embodiment of the present application is to provide a high-precision solution for optical power acquisition in the 5G fronthaul semi-active system. It is used to implement 1+1 protection wavelength division multiplexing demultiplexing on the line side and read the optical power of 6 channels at the remote end, ultimately achieving security assurance. It can achieve an optical power acquisition accuracy error within 1dB, which is 2-3dB better than other similar products on the market.

[0059] The embodiment of the present invention provides a 5G fronthaul MWDM device. Through the wave combining and demultiplexing module, it is used to obtain the optical signal, and obtain the corresponding electrical signal according to the optical signal; the input end of the optical power acquisition module is connected to the output end of the wave combining and demultiplexing module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, which is used to obtain the specified voltage value from the electrical signal; the output end of the central processing unit system is connected to the input end of the wave combining and demultiplexing module, which is used to convert the specified voltage value to obtain the corresponding optical power, and provide a viewing function, so as to improve the application limitations in the fronthaul field in 5G communication.

[0060] Embodiment 2

[0061] In a second aspect, an embodiment of the present invention provides a communication system. Figure 5 A schematic diagram of a communication system provided in Embodiment 2 of the present invention is shown in FIG. Figure 5 As shown, the communication system provided by the embodiment of the present application includes: a 5G fronthaul MWDM device 1 and a remote device 2, wherein the front-end communication device 1 communicates with the remote device 2, and the front-end communication device 1 communicates with multiple distribution units (ie, Figure 5 The remote device 2 is connected to a plurality of active antenna processing units (ie, Figure 5 The AAU marked in (A) is connected, wherein the front-end communication equipment includes the 5G fronthaul MWDM equipment in the above-mentioned embodiment 1.

[0062] The embodiment of the present invention provides a communication system. Through the communication system composed of a 5G fronthaul MWDM device and a remote device, the 5G fronthaul MWDM device includes: a wave combiner and splitter module, which is used to obtain an optical signal and obtain a corresponding electrical signal based on the optical signal; the input end of the optical power acquisition module is connected to the output end of the wave combiner and splitter module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, which is used to obtain a specified voltage value from the electrical signal; the output end of the central processing unit system is connected to the input end of the wave combiner and splitter module, which is used to convert the specified voltage value to obtain the corresponding optical power, and provide a viewing function, so as to improve the application limitations in the fronthaul field in 5G communication.

[0063] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0064] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0065] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A 5G fronthaul MWDM device, characterized in that: include: Wave combining and decomposing module, optical power acquisition module and central processing unit system, among which, The wave combining and decomposing module is used to obtain an optical signal and obtain a corresponding electrical signal according to the optical signal; The input end of the optical power acquisition module is connected to the output end of the wave combining and decomposing module, and the output end of the optical power acquisition module is connected to the input end of the central processing unit system, so as to obtain a specified voltage value from the electrical signal; The output end of the central processing unit system is connected to the input end of the wave combining and decomposing module, and is used to convert the corresponding optical power according to the specified voltage value and provide a viewing function; The optical power collection module includes: a first analog switch, a second analog switch and an amplifier, wherein after the first analog switch and the second analog switch select corresponding gears, the electrical signal is input into the amplifier, the first analog switch and the second analog switch are connected in parallel, the input end of the second analog switch is connected to the negative input end of the amplifier, the output end of the second analog switch is connected to the output end of the amplifier, the input end of the first analog switch is connected to the negative input end of the amplifier, and the output end of the first analog switch is connected to the central processing unit system.

2. The 5G fronthaul MWDM device according to claim 1, characterized in that: The wave combining and decomposing module includes: a light splitter and a sensor, wherein: The optical splitter is used to obtain an optical signal from a main line; The sensor is connected to the optical splitter and is used for converting the optical signal into an electrical signal and transmitting the electrical signal to the optical power collection module.

3. The 5G fronthaul MWDM device according to claim 2, characterized in that: The sensor includes: a photoelectric sensor.

4. The 5G fronthaul MWDM device according to claim 1, characterized in that: The collection optical power range of the first analog switch or the second analog switch is +10 to -70 dBm.

5. The 5G fronthaul MWDM device according to claim 1, characterized in that: The first analog switch or the second analog switch includes: an eight-to-one analog switch, wherein the specification of the eight-to-one analog switch is: 74HC4051PW.

6. The 5G fronthaul MWDM device according to claim 1, characterized in that: The central processing unit system is used to read the corresponding specified voltage value through the corresponding channel and convert it into the corresponding optical power.

7. The 5G fronthaul MWDM device according to claim 1, characterized in that: The 5G fronthaul MWDM device also includes: a power module and an indicator light.

8. A communication system, characterized in that: include: 5G fronthaul MWDM equipment and remote equipment, including: The front-end communication device communicates with the remote device, the front-end communication device is connected to multiple distribution units, and the remote device is connected to multiple active antenna processing units, wherein the front-end communication device includes the 5G fronthaul MWDM device described in any one of claims 1 to 7.

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