CN113472444A - Forwarding method and system based on 5G network - Google Patents
Forwarding method and system based on 5G network Download PDFInfo
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- CN113472444A CN113472444A CN202010235604.XA CN202010235604A CN113472444A CN 113472444 A CN113472444 A CN 113472444A CN 202010235604 A CN202010235604 A CN 202010235604A CN 113472444 A CN113472444 A CN 113472444A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
Abstract
The embodiment of the invention relates to the technical field of communication, and discloses a forwarding method and a forwarding system based on a 5G network, wherein the method comprises the following steps: the AAU sends the respective first radio frequency signal to a corresponding first color light module; each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal; each first color light module sends the first optical signal to a first wave combiner; the first wave combiner couples the composite first optical signals obtained by combining the first optical signals to the same optical fiber and transmits the composite first optical signals to the first wave splitter; the first wave splitter processes the composite first optical signals to obtain each first optical signal; the first wave splitter sends each first optical signal to each second color light module; each second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal; by the way that the second color light modules send the first radio frequency signals to the DU, the embodiment of the invention realizes that a plurality of signals are transmitted by one fiber core.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a forwarding method and a forwarding system based on a 5G network.
Background
With the development of the fifth generation mobile communication system (5G), the deployment density of the base stations is increased, and the deployment positions among the base stations are closer and closer. Aiming at the requirement of deep coverage of a base station of a 5G communication network, the original network architecture is also changed adaptively. In a 5G communication network architecture, signals are transmitted between Active Antenna Units (AAUs), Distributed Units (DUs), Central Units (CUs) and a core network. Taking a Slicing Packet Network (SPN) as an example, in the architecture, the AAU and the DU form a forwarding network. In a fronthaul network, the AAU and the DU are pulled far by optical cables.
Due to the dense networking of 5G base stations, the consumption of optical cables increases. The traditional optical fiber direct-driven signal transmission mode has the problems of large occupied fiber core resources and insufficient fiber core resources when being applied to a forward transmission network.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide a forwarding method and system based on a 5G network, so as to solve the problem of insufficient fiber core resources in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a forwarding method based on a 5G network, the method including:
the AAU sends the respective first radio frequency signal to a corresponding first color light module;
each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal;
each first color light module sends the first optical signal to a first wave combiner;
the first combiner combines the first optical signals to obtain a composite first optical signal;
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to the first wave splitter;
the first wave splitter processes the composite first optical signal to obtain each first optical signal;
the first wave splitter sends the first optical signals to the second color light modules;
each second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal;
and each second color light module sends the first radio frequency signal to the DU.
Optionally, the combining, by the first combiner, the first optical signals to obtain a composite first optical signal includes:
and the first wave combiner combines the first optical signals according to the wavelength of the first optical signals to obtain a composite first optical signal.
Optionally, the coupling of the first combiner to the same optical fiber for transmission to the first splitter includes:
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to an OLP (optical line processing);
the OLP transmits the composite first optical signal to the first splitter.
According to another aspect of the embodiments of the present invention, there is provided a forwarding method based on a 5G network, the method including:
the DU sends the second radio frequency signal to each third color light module;
the third color light modules respectively process the second radio frequency signals to obtain corresponding second light signals;
each third color light module sends the second light signal to a second wave combiner;
the second wave combiner combines the second optical signals to obtain a composite second optical signal;
the second wave combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the second wave splitter;
the second wave splitter processes the composite second optical signal to obtain each second optical signal;
the second wave splitter sends the second optical signals to fourth color light modules;
the fourth color light module respectively processes the second optical signals to obtain second radio frequency signals corresponding to the second optical signals;
and each fourth color light module sends each second radio frequency signal to each AAU.
Optionally, the combining, by the second multiplexer, the second optical signals to obtain a composite second optical signal includes:
and the second wave combiner combines the second optical signals according to the wavelengths of the second optical signals to obtain a composite second optical signal.
Optionally, the coupling of the second composite optical signal to the same optical fiber by the second combiner and the transmission to the second splitter includes:
the second wave combiner couples the composite second optical signal into the same optical fiber and transmits the composite second optical signal to the OLP;
the OLP transmits the composite second optical signal to the second splitter.
According to another aspect of the embodiments of the present invention, there is provided a forwarding system based on a 5G network, the system including: the device comprises an AAU, a first color light module, a first multiplexer, a first demultiplexer, a second color light module and a DU;
the AAU sends the respective first radio frequency signal to a corresponding first color light module;
each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal;
each first color light module sends the first optical signal to a first wave combiner;
the first combiner combines the first optical signals to obtain a composite first optical signal;
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to the first wave splitter;
the first wave splitter processes the composite first optical signal to obtain each first optical signal;
the first wave splitter sends the first optical signals to the second color light modules;
each second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal;
and each second color light module sends the first radio frequency signal to the DU.
Optionally, the system further comprises an OLP; the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to an OLP (optical line processing); the OLP transmits the composite first optical signal to the first splitter.
According to still another aspect of the embodiments of the present invention, there is provided a forwarding system based on a 5G network, the system including: DU, a third color light module, a second multiplexer, a second wave splitter, a fourth color light module and AAU;
the DU sends the second radio frequency signal to each third color light module;
the third color light modules respectively process the second radio frequency signals to obtain corresponding second light signals;
each third color light module sends the second light signal to a second wave combiner;
the second wave combiner combines the second optical signals to obtain a composite second optical signal;
the second wave combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the second wave splitter;
the second wave splitter processes the composite second optical signal to obtain each second optical signal;
the second wave splitter sends the second optical signals to fourth color light modules;
the fourth color light module respectively processes the second optical signals to obtain second radio frequency signals corresponding to the second optical signals;
and each fourth color light module sends each second radio frequency signal to each AAU.
Optionally, the system further comprises an OLP; and the second wave combiner combines the second optical signals according to the wavelengths of the second optical signals to obtain a composite second optical signal.
In the embodiment of the invention, the first radio frequency signals received by the AAUs are converted into the first optical signals with different wavelengths through the first color light module, and the first optical signals are transmitted to the DU in the same optical fiber through the first wave combiner and the first wave splitter. By the mode, a plurality of signals can be transmitted through one fiber core, so that the number of the fiber cores of a plurality of AAUs and DUs during signal transmission is reduced, and the problem of insufficient fiber core resources is solved.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.
Drawings
The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flowchart illustrating a forwarding method based on a 5G network according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a forwarding method based on a 5G network according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a forwarding method based on a 5G network according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating a forwarding system based on a 5G network according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating a forwarding system based on a 5G network according to another embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein.
An application scenario of the embodiment of the present invention is signal transmission between an Active Antenna Unit (AAU) and a Distributed Unit (DU) in a 5G fronthaul network, for example, signal transmission of a fronthaul network in a Slicing Packet Network (SPN). In an SPN network, AAUs and DUs are connected by optical fibers. During the signal transmission process, for the downlink direction, the base station may control the signal of a certain user to be transmitted from a specific AAU channel. For the uplink direction, the mobile phone signals of the users are received by the channel with the closest distance and then transmitted to the base station from the channel through the optical fiber, so that the interference among the users on different channels is greatly reduced. In the embodiment of the invention, in order to solve the problem of insufficient fiber core resources caused by the condition that signals with each wavelength are transmitted through one fiber core in the signal transmission process, a plurality of signals with different wavelengths are transmitted in the same fiber core in a multiplexing mode, so that the effect of transmitting a plurality of different signals through one fiber core is realized. The overall concept of the present invention will be described below with reference to specific embodiments.
Fig. 1 shows a flowchart of a forwarding method based on a 5G network according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
step 110: the AAU sends the respective first radio frequency signal to the corresponding first color light module.
Wherein, each AAU is provided with a first color light module. Each AAU is interfaced with a first color light module disposed thereon. After receiving uplink data sent by a user, the AAU processes the uplink data to obtain a first radio frequency signal, and sends the first radio frequency signal to the first color light module through an interface between the AAU and the first color light module. The processing of the uplink data by the AAU includes digital-to-analog conversion, signal modulation, signal amplification, and the like. The digital-to-analog conversion is to convert the baseband digital signals of the uplink into analog signals. The signal modulation refers to modulating an analog signal obtained after digital-to-analog conversion into a first radio frequency signal.
Step 120: each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal.
The first color light module modulates the received first radio frequency signal to obtain a first optical signal corresponding to the first radio frequency signal. The first optical signal is carried by light as a carrier and carries a first radio frequency signal. When the first color light module modulates the received first radio frequency signal, a light source in the first color light module emits laser, and the received signal is modulated to the light source to obtain a first optical signal. The wavelengths of the laser light emitted by the light sources in the first color light modules are different, and the wavelengths of the obtained first optical signals are also different.
Step 130: each first color light module sends the first optical signal to the first wave combiner.
Wherein, the first wave combiner is arranged at the AAU side.
Step 140: the first combiner combines the first optical signals to obtain a composite first optical signal.
The first combiner combines the first optical signals according to the wavelengths of the first optical signals to obtain a composite first optical signal.
Step 150: the first wave combiner couples the composite first optical signal to the same optical fiber and transmits the composite first optical signal to the first wave splitter.
Wherein, the first wave separator is arranged at the DU side.
Step 160: the first wave splitter processes the composite first optical signal to obtain each first optical signal.
Step 170: the first wave splitter sends each first optical signal to each second color light module.
Wherein, the second color light module is arranged on the DU. The number of the second color light modules is the same as that of the first color light modules.
Step 180: the second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal.
The second color light module demodulates the received first optical signal to obtain a first radio frequency signal carried in the first optical signal. The first radio frequency signal is a first radio frequency signal received by the AAU.
Step 190: and each second color light module sends the first radio frequency signal to the DU.
In the embodiment of the invention, the first radio frequency signals received by the AAUs are converted into the first optical signals with different wavelengths through the first color light module, and the first optical signals are transmitted to the DU in the same optical fiber through the first wave combiner and the first wave splitter. By the mode, a plurality of signals can be transmitted through one fiber core, so that the number of the fiber cores of a plurality of AAUs and DUs during signal transmission is reduced, and the problem of insufficient fiber core resources is solved.
Fig. 2 shows a flowchart of a forwarding method based on a 5G network according to another embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:
step 210: the AAU sends the respective first radio frequency signal to the corresponding first color light module.
Step 220: each first color light module respectively processes the received first radio frequency signal to obtain a corresponding first optical signal.
Step 230: each first color light module sends the first optical signal to the first wave combiner.
Step 240: the first combiner combines the first optical signals to obtain a composite first optical signal.
Step 250: the first wave combiner couples the composite first optical signal to the same optical fiber and transmits the optical signal to the automatic switching protection device of the optical fiber circuit.
The optical fiber line auto-switch protection device (OLP) includes a coupler and an optical switch. After receiving the composite first optical signal, the coupler transmits the composite first optical signal according to a ratio of 1: the coupling mode of 1 is two paths, namely a main line and a slave line. When the composite first optical signal is transmitted to the OLP, a user monitoring interface of the OLP may monitor a state of the composite signal passing through the OLP in real time to determine whether there is a failure in the transmission. The optical switch is used for gating one signal in the main line and the slave line. Normally, the optical switch gates only the main line signal. When the network manager detects the transmission fault of the main line, the optical switch gates the slave line to ensure the normal transmission of the composite signal.
Step 260: the optical fiber circuit automatic switching protection device sends the composite first optical signal to the first wave splitter.
Step 270: the first wave splitter processes the composite first optical signal to obtain each first optical signal.
Step 280: the first wave splitter sends each first optical signal to each second color light module.
Step 290: the second color light module respectively processes the received first optical signals to obtain first radio frequency signals corresponding to the first optical signals.
Step 200: and each second color light module sends the obtained first radio frequency signal to the DU.
The embodiment of the invention is provided with the OLP device in the transmission channel of the AAU and the DU, the composite signal is gated through the OLP device, when the main line fails, the slave line is gated through the optical switch, so that the normal transmission of the composite signal is ensured, the interruption of signal transmission caused by the transmission failure of the main line is avoided, and the reliability of signal transmission is improved. In addition, the OLP apparatus is provided with a user monitoring interface, so that the composite signal passing through the OLP can be monitored, and the signal transmission condition can be observed conveniently.
It should be noted that fig. 1 and fig. 2 illustrate the overall concept of the present invention by taking the transmission of uplink data as an example. When the downlink data is transmitted from the DU to the AAU, the transmission flow includes the following steps as shown in fig. 3:
step 310: and the DU sends the second radio frequency signal to each third color light module.
Wherein, the third color light module is arranged on the DU. The second radio frequency signal received by the RDU is transmitted by a core network in the 5G network.
Step 320: and each third color light module respectively processes the second radio frequency signal to obtain a corresponding second light signal.
The specific description of the third color light module processing the second radio frequency signal is the same as the flow of the first color light module processing the first radio frequency signal in fig. 1. Please refer to the description of step 120 in the previous embodiment, which is not described herein.
Step 330: and each third color light module sends the second light signal to the second wave combiner.
The second multiplexer is disposed at the DU side.
Step 340: and the second multiplexer combines the second optical signals to obtain a composite second optical signal.
Step 350: and the second wave combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the second wave splitter.
Wherein, the second wave separator is arranged at the AAU side.
Step 360: and the second wave splitter processes the composite second optical signal to obtain each second optical signal.
Step 370: and the second wave splitter sends each second optical signal to each fourth color light module.
Wherein, the fourth color light module is arranged on the AAU. The number of the fourth color light modules is the same as that of the third color light modules.
Step 380: and the fourth color light module respectively processes the second optical signals to obtain second radio frequency signals corresponding to the second optical signals.
Step 390: and each fourth color light module sends the second radio frequency signal to each AAU.
In the embodiment of the invention, the second radio frequency signal received by the DU is converted into the second optical signal with different wavelengths through the third color optical module, and the second optical signals are transmitted to the AAU in the same optical fiber through the second wave combiner and the second wave splitter. By the mode, a plurality of signals can be transmitted through one fiber core, so that the number of the fiber cores when the DU and the AAUs transmit signals is reduced, and the problem of insufficient fiber core resources is solved.
In some embodiments, step 350 in fig. 3 further comprises: the second combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the OLP, and the OLP transmits the composite second optical signal to the second splitter. By the mode, the reliability of signal transmission is improved.
Fig. 4 is a schematic structural diagram of a forwarding system based on a 5G network according to an embodiment of the present invention. As shown in fig. 4, the fronthaul system includes a plurality of AAUs 10, a first color light module 20, a first multiplexer 30, a first splitter 40, a second color light module 50, and a DU 60.
Wherein, the number of the first color light modules 20 is the same as the number of the AAUs 10. Each first color light module 20 is disposed on one AAU 10. As shown in fig. 3, in the embodiment of the present invention, the number of the AAUs 10 is 3, and correspondingly, the number of the first color light modules 20 is also 3. In the specific implementation process, the AAU 10 is provided with a socket of the first color light module 20, and the socket is adapted to the first color light module 20. After the first color light module 20 is inserted into the socket, the AAU 10 and the first color light module 20 realize communication connection, and send the received first radio frequency signal to the first color light module 20. The first color light module 20 may be any type of color light module, and the embodiment of the present invention does not limit the specific type of the first color light module 20, such as a short-wave color light module, a long-wave color light module, and the like.
Each first color light module 20 is connected to the first multiplexer 30. The first combiner 30 is provided on the side close to the AAU 10. In a specific implementation process, the first color light module 20 and the first wave combiner 30 are connected by an optical fiber. Each first color light module 20 transmits the obtained first optical signal with a certain wavelength to the first multiplexer 30. The first combiner 30 processes the received first optical signals, combines the first optical signals according to the wavelength of each first optical signal to obtain a composite signal, and couples the composite signal in the same cable to be transmitted to the first splitter 40.
The first splitter 40 is provided on the DU 60 side. The first demultiplexer 40 processes the composite signal to obtain each first optical signal before the composite signal is combined, and transmits each first optical signal to each second color light module 50. When transmitting to the second color light module 50, the first optical signal of each wavelength is transmitted to one second color light module 50. The number of the second color light modules 50 is the same as the number of the first color light modules 20. The second color light module 50 is disposed on the DU 60, so as to transmit the first radio frequency signal carried by the first optical signal of each wavelength to the DU 60. The specific arrangement of the second color light module 50 on the DU 60 is the same as the arrangement of the first color light module 20 on the AAU 10.
In the embodiment of the present invention, the first radio frequency signal received by each AAU 10 is converted into the first optical signal with different wavelengths through the first color optical module 20, and the first optical signal is transmitted to the DU 60 in the same optical fiber through the first multiplexer 30 and the first splitter 40. Through the mode, the embodiment of the invention reduces the number of the fiber cores when a plurality of AAUs 10 and DUs 60 carry out signal transmission, and solves the problem of insufficient fiber core resources.
Fig. 5 is a schematic structural diagram of a forwarding system based on a 5G network according to another embodiment of the present invention. As shown in fig. 5, the forwarding system includes: a plurality of AAUs 10, a plurality of first color light modules 20, a first multiplexer 30, a first splitter 40, a plurality of second color light modules 50, a DU 60, and an OLP 70. Wherein the OLP 70 comprises a coupler 71 and an optical switch 72. The OLP 70 is connected between the first combiner 30 and the first splitter 40. The coupler 71 couples the composite first optical signal transmitted by the first combiner 30 into a signal of the master line and a signal of the slave line. The optical switch 72 gates one of the master and slave lines to transmit the composite first optical signal to the first demultiplexer 40 through the gated line.
In the embodiment of the present invention, the OLP 70 is arranged in the transmission channel between the AAU 10 and the DU 60, the composite signal is gated through the OLP 70, and when the main line fails, the slave line is gated through the optical switch 72, so as to ensure normal transmission of the composite signal, and avoid interruption of signal transmission when the main line fails.
It will be appreciated that the forwarding systems shown in fig. 4 and 5 correspond to the methods in fig. 1 and 2, respectively. The forwarding systems shown in fig. 4 and 5 are respectively used for executing the transmission flow of the uplink data in fig. 1 and 2. The structure of the system during downlink data transmission can be obtained by adaptively modifying the forwarding system shown in fig. 4 and 5 according to the transmission method of the downlink data. And will not be described in detail herein.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.
Claims (10)
1. A forwarding method based on a 5G network is characterized by comprising the following steps:
the AAU sends the respective first radio frequency signal to a corresponding first color light module;
each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal;
each first color light module sends the first optical signal to a first wave combiner;
the first combiner combines the first optical signals to obtain a composite first optical signal;
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to the first wave splitter;
the first wave splitter processes the composite first optical signal to obtain each first optical signal;
the first wave splitter sends the first optical signals to the second color light modules;
each second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal;
and each second color light module sends the first radio frequency signal to the DU.
2. The method of claim 1, wherein the first combiner combines the first optical signals to obtain a composite first optical signal, comprising:
and the first wave combiner combines the first optical signals according to the wavelength of the first optical signals to obtain a composite first optical signal.
3. The method of claim 1, wherein the first combiner couples the composite first optical signal into the same optical fiber for transmission to the first splitter, and wherein the coupling comprises:
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to an OLP (optical line processing);
the OLP transmits the composite first optical signal to the first splitter.
4. A forwarding method based on a 5G network is characterized by comprising the following steps:
the DU sends the second radio frequency signal to each third color light module;
the third color light modules respectively process the second radio frequency signals to obtain corresponding second light signals;
each third color light module sends the second light signal to a second wave combiner;
the second wave combiner combines the second optical signals to obtain a composite second optical signal;
the second wave combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the second wave splitter;
the second wave splitter processes the composite second optical signal to obtain each second optical signal;
the second wave splitter sends the second optical signals to fourth color light modules;
the fourth color light module respectively processes the second optical signals to obtain second radio frequency signals corresponding to the second optical signals;
and each fourth color light module sends each second radio frequency signal to each AAU.
5. The method of claim 4, wherein the second combiner combines the second optical signals to obtain a composite second optical signal, comprising:
and the second wave combiner combines the second optical signals according to the wavelengths of the second optical signals to obtain a composite second optical signal.
6. The method of claim 4, wherein the second combiner couples the composite second optical signal into the same optical fiber for transmission to a second splitter, comprising:
the second wave combiner couples the composite second optical signal into the same optical fiber and transmits the composite second optical signal to the OLP;
the OLP transmits the composite second optical signal to the second splitter.
7. A forwarding system based on a 5G network, the system comprising: the device comprises an AAU, a first color light module, a first multiplexer, a first demultiplexer, a second color light module and a DU;
the AAU sends the respective first radio frequency signal to a corresponding first color light module;
each first color light module respectively processes the first radio frequency signal to obtain a corresponding first light signal;
each first color light module sends the first optical signal to a first wave combiner;
the first combiner combines the first optical signals to obtain a composite first optical signal;
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to the first wave splitter;
the first wave splitter processes the composite first optical signal to obtain each first optical signal;
the first wave splitter sends the first optical signals to the second color light modules;
each second color light module respectively processes each first optical signal to obtain a first radio frequency signal corresponding to each first optical signal;
and each second color light module sends the first radio frequency signal to the DU.
8. The system of claim 7, further comprising an OLP;
the first wave combiner couples the composite first optical signal into the same optical fiber and transmits the composite first optical signal to an OLP (optical line processing); the OLP transmits the composite first optical signal to the first splitter.
9. A forwarding system based on a 5G network, the system comprising: DU, a third color light module, a second multiplexer, a second wave splitter, a fourth color light module and AAU;
the DU sends the second radio frequency signal to each third color light module;
the third color light modules respectively process the second radio frequency signals to obtain corresponding second light signals;
each third color light module sends the second light signal to a second wave combiner;
the second wave combiner combines the second optical signals to obtain a composite second optical signal;
the second wave combiner couples the composite second optical signal to the same optical fiber and transmits the composite second optical signal to the second wave splitter;
the second wave splitter processes the composite second optical signal to obtain each second optical signal;
the second wave splitter sends the second optical signals to fourth color light modules;
the fourth color light module respectively processes the second optical signals to obtain second radio frequency signals corresponding to the second optical signals;
and each fourth color light module sends each second radio frequency signal to each AAU.
10. The system of claim 9, further comprising an OLP;
and the second wave combiner combines the second optical signals according to the wavelengths of the second optical signals to obtain a composite second optical signal.
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