CN215871425U - Forward-transmission chain type network system - Google Patents
Forward-transmission chain type network system Download PDFInfo
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- CN215871425U CN215871425U CN202122532611.9U CN202122532611U CN215871425U CN 215871425 U CN215871425 U CN 215871425U CN 202122532611 U CN202122532611 U CN 202122532611U CN 215871425 U CN215871425 U CN 215871425U
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Abstract
The utility model provides a fronthaul chain network system, which comprises a first connection base station to an Mth connection base station, wherein each connection base station comprises an optical filter and N active antenna processing units (AAUs), the optical filter is used for filtering 2 color light channels for each AAU, the first connection base station to the Mth connection base station are sequentially connected through the optical filter, and in every two adjacent connection base stations, the reflection end of the optical filter of the previous connection base station is connected with the common end of the optical filter of the next connection base station. According to the forward-transmission chain type network system provided by the utility model, the optical filter in the connection base station filters out all color light channels corresponding to the AAU of the current connection base station, and transmits the residual channels which are not filtered out to the next connection base station through the single optical fiber without using a passive splitter/combiner WDM, so that the number of passive optical devices used in the network system is reduced, and the utilization efficiency of optical fiber resources is improved.
Description
Technical Field
The utility model relates to the technical field of communication transmission, in particular to a forward chain type network system.
Background
With the increasing requirements on data transmission speed and transmission quality, the 4G network is difficult to meet more new production and living requirements, and a fifth generation mobile communication technology, i.e. a higher-level communication network 5G, is produced.
In the prior art, the infrastructure of a 5G end-to-end network mainly includes wireless, transmission, core network, service application platform, and facilities such as machine room and ground pipeline required for deployment. The wireless device mainly includes an Active Antenna Unit (AAU), and the AAU is connected to the baseband processing Unit through an optical fiber. Fig. 1 is a structure diagram of a 5G forward link type networking of a conventional single-fiber cascade passive splitter/combiner. Specifically, as shown in fig. 1, two passive Wavelength Division/Multiplexing (WDM) devices are required to be added between an AUU site and a convergence point, that is, a 5G Distribution Unit (DU), and between two adjacent AUU sites in an existing 5G forwarding network, and a connection is established through a corresponding pigtail and a movable joint connected to each color optical channel.
However, based on the existing 5G fronthaul link type networking structure, the insertion attenuation of a plurality of WDM passive optical devices and corresponding live connectors is large, which results in large loss of optical fiber resources.
SUMMERY OF THE UTILITY MODEL
The utility model provides a forward chain type network system, which is used for improving the utilization efficiency of optical fiber resources.
In a first aspect, the present invention provides a fronthaul chain network system, including a first connection base station to an mth connection base station, where each connection base station includes an optical filter and N active antenna processing units AAU, the optical filter is connected to each AAU, the optical filter is configured to filter 2 color channels for each AAU, where M and N are positive integers;
the first connecting base station and the Mth connecting base station are sequentially connected through optical filters, and in every two adjacent connecting base stations, the reflection end of the optical filter of the previous connecting base station is connected with the common end of the optical filter of the next connecting base station.
In one possible design, the optical filter of the connection base station is connected to the color laser transceiver of each AAU through the transmission end.
In one possible design, the optical filter included in the first connected base station is configured to assign 1 st to 2 nth color channels to N AAUs in the first connected base station, the optical filter included in the second connected base station is configured to assign 2N +1 th to 4 nth color channels to N AAUs in the second connected base station, and the optical filter included in the mth connected base station is configured to assign 2N (M-1) +1 nd to 2M N color channels to N AAUs in the mth connected base station.
In one possible design, the optical filter of each connection base station is connected to the optical filters of two adjacent connection base stations by a single fiber optic cable.
In one possible design, a passive wavelength division/combiner is also included; the optical filter of the first connection base station is connected with the passive wavelength division/wave combiner through a public end and an optical cable single-core optical fiber, and the passive wavelength division/wave combiner is connected with a distribution unit DU of the 5G network.
In one possible design, the passive wavelength division/multiplexing device includes 2M × N color channels, and the color laser transceivers included in the distribution unit DU are connected to the 2M × N color channels of the passive wavelength division/multiplexing device through pigtails, respectively.
In one possible design, when the value of M is 3 and the value of N is 3, the optical filter is an 18-channel CWDM ABS box type coarse wavelength division single branch optical filter, the model of the optical filter is C-YMTR18-6-1, and the passive wavelength division/combiner is an 18-channel CWDM ABS box type coarse wavelength division multiplexer, the model of which is C-YMTR 18.
In one possible design, when M is 5 and N is 3, the optical filter is a 30-channel DWDM ABS box type dense wavelength division two-branch optical filter, the model of the optical filter is D-YMTR30-6-2, and the passive wavelength division/wave combiner is a 30-channel DWDM ABS box type dense wavelength division multiplexer, the model of the passive wavelength division/wave combiner is D-YMTR 30.
In one possible design, when M is 6 and N is 3, the optical filter is a 36-channel DWDM ABS box type dense wavelength division two-branch optical filter, the model of the optical filter is D-YMTR36-6-2, and the passive wavelength division/wave combiner is a 36-channel DWDM ABS box type dense wavelength division multiplexer, the model of the passive wavelength division/wave combiner is D-YMTR 36.
In one possible design, the connecting base station is a 5G base station.
The utility model provides a forward chain network system, which integrates an optical filter in a connection base station, and uses the optical filter to filter 2 color light channels for each AAU, namely, filters out the color light channels corresponding to all AAUs of the current connection base station, and transmits the residual channels which are not filtered out to the next connection base station through a single optical fiber without using a passive wave splitter/combiner WDM, thereby reducing the number of passive optical components used in the network system and improving the utilization efficiency of optical fiber resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structure diagram of a 5G forward link type networking of a conventional single-fiber cascade passive splitter/combiner;
fig. 2 is a first schematic structural diagram of a fronthaul chain network system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fronthaul chain network system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram three of a fronthaul chain network system according to an embodiment of the present invention;
fig. 5 is a fourth schematic structural diagram of the forward link network system according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the prior art, the infrastructure of a 5G end-to-end network mainly includes wireless, transmission, core network, service application platform, and facilities such as machine room and ground pipeline required for deployment. The wireless device mainly comprises an active antenna unit AAU, and the AAU is connected with the baseband processing unit through an optical fiber. Two passive wavelength division/multiplexing devices (WDM) are required to be added between AUU stations and a convergence point (5G Distribution Unit (DU)) and between two adjacent AUU stations in the existing 5G forward transmission network, and connection is established through corresponding tail fibers and movable joints connected with various color optical channels. However, based on the existing 5G fronthaul link type networking structure, the insertion attenuation of a plurality of WDM passive optical devices and corresponding live connectors is large, which results in large loss of optical fiber resources.
The application aims at the problems in the prior art, and provides a forward chain type network system, which integrates an optical filter in a connection base station, wherein the optical filter is used for filtering 2 color light channels for each AAU, the common end of the optical filter in the current connection base station is connected with the reflection end of the optical filter in the last connection base station, the reflection end of the optical filter in the current connection base station is connected with the common end of the optical filter in the next connection base station, the color light channels corresponding to all AAUs of the current connection base station are filtered, and the residual channels which are not filtered are transmitted to the next connection base station through a single optical fiber without using a passive Wavelength Division Multiplexing (WDM), so that the number of passive optical components used in the network system is reduced, and the utilization efficiency of optical fiber resources is improved. The technical solution of the present invention will be described in detail below with specific examples.
Fig. 2 is a first schematic structural diagram of a fronthaul chain network system according to an embodiment of the present invention. As shown in fig. 2, the fronthaul chain network system provided in this embodiment includes a first connection base station to an mth connection base station, each connection base station includes an optical filter and N active antenna processing units AAU, the optical filter is respectively connected to each AAU, and the optical filter is configured to filter 2 color channels for each AAU, where M and N are positive integers. The first connecting base station and the Mth connecting base station are sequentially connected through optical filters, and in every two adjacent connecting base stations, the reflection end of the optical filter of the previous connecting base station is connected with the common end of the optical filter of the next connecting base station.
In this embodiment, based on the structure of the fronthaul chain network system provided in fig. 2, for example, the common terminal of the optical filter in the S-th connected base station is connected to the reflective terminal of the optical filter of the S-1 th connected base station, and the reflective terminal of the optical filter in the S-th connected base station is connected to the common terminal of the optical filter of the S +1 th connected base station, where S is a positive integer smaller than M. Specifically, the optical filter included in the first connection base station is configured to allocate 1 st to 2 nth color optical channels to N AAUs in the first connection base station, the optical filter included in the second connection base station is configured to allocate 2N +1 th to 4 nth color optical channels to N AAUs in the second connection base station, and the optical filter included in the M connection base station is configured to allocate 2N (M-1) +1 th to 2M × N color optical channels to N AAUs in the M connection base station.
Fig. 3 is a schematic structural diagram of a fronthaul chain network system according to an embodiment of the present invention. As shown in fig. 3, the fronthaul chain network system provided in this embodiment includes a first connection base station to a third connection base station, and each connection base station includes an optical filter and 3 active antenna processing units AAU. Specifically, the common end of the optical filter in the second connected base station is connected to the reflection end of the optical filter in the first connected base station, and the reflection end of the optical filter in the second connected base station is connected to the common end of the optical filter in the third connected base station. Illustratively, the optical filter connected to the base station is connected to the color laser transceiver of each AAU through the transmission port.
On the basis of the structure of the forward chain network system provided in fig. 3, the optical filter included in the first connection base station is configured to allocate 1 st to 6 th color optical channels to 3 AAUs included in the first connection base station, the optical filter included in the second connection base station is configured to allocate 7 th to 12 th color optical channels to 3 AAUs included in the second connection base station, and the optical filter included in the third connection base station is configured to allocate 13 th to 18 th color optical channels to 3 AAUs included in the third connection base station. Illustratively, when the value of M is 3 and the value of N is 3, the optical filter is an 18-channel CWDM ABS box type coarse wavelength division single-branch optical filter, the model of the optical filter is C-YMTR18-6-1, and the passive wavelength division/multiplexer is an 18-channel CWDM ABS box type coarse wavelength division multiplexer, the model of which is C-YMTR 18. Illustratively, when the value of M is 5 and the value of N is 3, the optical filter is a 30-channel DWDM ABS box type dense wavelength division two-branch optical filter, the model of the optical filter is D-YMTR30-6-2, and the passive wavelength division/wave combiner is a 30-channel DWDM ABS box type dense wavelength division multiplexer, the model of the passive wavelength division/wave combiner is D-YMTR 30. Illustratively, when the value of M is 6 and the value of N is 3, the optical filter is a 36-channel DWDM ABS box type dense wavelength division two-branch optical filter, the model of the optical filter is D-YMTR36-6-2, and the passive wavelength division/wave combiner is a 36-channel DWDM ABS box type dense wavelength division multiplexer, the model of the passive wavelength division/wave combiner is D-YMTR 36.
Specifically, the optical filter of the first connection base station is connected to the passive wavelength division/combiner through a common end and an optical cable single-core fiber, and the passive wavelength division/combiner is connected to a distribution unit DU of the 5G network. Illustratively, the passive wavelength division/multiplexing device includes 18 color channels, and the color laser transceivers included in the distribution unit DU are connected to the 18 color channels of the passive wavelength division/multiplexing device through pigtails, respectively.
It can be known from the foregoing embodiments that, in the forward link network system provided in the present invention, an optical filter is integrated in a connection base station, and the optical filter is used to filter 2 color channels for each AAU, that is, by filtering out color channels corresponding to all AAUs of the current connection base station, and transmitting the remaining channels that are not filtered out to the next connection base station through a single optical fiber, without using a passive optical splitter/combiner WDM, the number of passive optical devices used in the network system is reduced, and the utilization efficiency of optical fiber resources is improved.
Fig. 4 is a third schematic structural diagram of a fronthaul chain network system according to an embodiment of the present invention. As shown in fig. 4, the fronthaul chain network system provided in this embodiment includes a first connection base station to a qth connection base station, where each connection base station includes an optical filter and 3 active antenna processing units AAU. Specifically, the first connection base station includes a first reflection end and a second reflection end. The connection relationship between the first connection base station and the third connection base station is the same as the structure in fig. 3, and is not described herein again. The common end of the optical filter in the second connection base station is connected with the first reflection end of the optical filter in the first connection base station, the common end of the optical filter in the fourth connection base station is connected with the second reflection end of the optical filter in the first connection base station, and the reflection end of the optical filter in the fourth connection base station is connected with the common end of the optical filter in the fifth connection base station. The connection relationship between the fourth connection base station and the qth connection base station is the same as the structure in fig. 3, and is not described herein again.
Fig. 5 is a fourth schematic structural diagram of the forward link network system according to the embodiment of the present invention. As shown in fig. 4, the fronthaul chain network system provided in this embodiment includes a first connection base station to a fifth connection base station, and each connection base station includes an optical filter and 3 active antenna processing units AAU. Specifically, the first connection base station includes a first reflection end and a second reflection end. The connection relationship between the first connection base station and the third connection base station is the same as the structure in fig. 3, and is not described herein again. The common end of the optical filter in the second connection base station is connected with the first reflection end of the optical filter in the first connection base station, the common end of the optical filter in the fourth connection base station is connected with the second reflection end of the optical filter in the first connection base station, and the reflection end of the optical filter in the fourth connection base station is connected with the common end of the optical filter in the fifth connection base station.
In this embodiment, the color laser transceivers included in the distribution unit DU are connected to the 30 color channels of the passive wavelength division/multiplexing device through the pigtails, and the passive wavelength division/multiplexing device includes the 30 color channels. The optical filter included in the first connection base station is used for allocating 1 st to 6 th color light channels to 3 AAUs included in the first connection base station, the optical filter included in the second connection base station is used for allocating 7 th to 12 th color light channels to 3 AAUs included in the second connection base station, and the optical filter included in the third connection base station is used for allocating 13 th to 18 th color light channels to 3 AAUs included in the third connection base station. The optical filter included in the fourth connection base station is used for allocating 19 th to 24 th color light channels to 3 AAUs included in the fourth connection base station, and the optical filter included in the fifth connection base station is used for allocating 25 th to 30 th color light channels to 3 AAUs included in the fifth connection base station.
From the above embodiments, the present invention provides a fronthaul chained network system, which adds more 5G AAU sites on the basis of the fronthaul chained network system structure implemented in fig. 2, and simultaneously reduces the construction cost, reduces the construction amount of the project, improves the construction efficiency of the network, and shortens the construction period.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A forward chain network system is characterized by comprising a first connection base station and an Mth connection base station, wherein each connection base station comprises an optical filter and N active antenna processing units (AAUs), the optical filter is respectively connected with each AAU, the optical filter is used for filtering 2 color light channels for each AAU, and M and N are positive integers;
the first connecting base station and the Mth connecting base station are sequentially connected through optical filters, and in every two adjacent connecting base stations, the reflection end of the optical filter of the previous connecting base station is connected with the common end of the optical filter of the next connecting base station.
2. The system of claim 1, wherein the optical filter of the connection base station is connected to the color laser transceiver of each AAU through a transmission port.
3. The system of claim 1, wherein the optical filters included in the first connected base station are configured to assign 1 st to 2 nth color channels to the N AAUs in the first connected base station, the optical filters included in the second connected base station are configured to assign 2N +1 th to 4 nth color channels to the N AAUs in the second connected base station, and the optical filters included in the mth connected base station are configured to assign 2N (M-1) +1 th to 2M N color channels to the N AAUs in the mth connected base station.
4. The system according to claim 1, wherein the optical filter of each connection base station is connected to the optical filters of two adjacent connection base stations through a single core optical fiber of an optical cable.
5. The system of claim 1, further comprising a passive wavelength division/combiner; the optical filter of the first connection base station is connected with the passive wavelength division/wave combiner through a public end and an optical cable single-core optical fiber, and the passive wavelength division/wave combiner is connected with a distribution unit DU of the 5G network.
6. The system of claim 5, wherein the passive wavelength division/multiplexing device comprises 2M × N color channels, and the color laser transceivers included in the distribution unit DU are respectively connected to the 2M × N color channels of the passive wavelength division/multiplexing device through pigtails.
7. The system according to any one of claims 1 to 6, wherein when the value of M is 3 and the value of N is 3, the optical filter is an 18-channel CWDM ABS box type coarse wavelength division single branch optical filter, the model of the optical filter is C-YMTR18-6-1, and the passive wavelength division/combiner is an 18-channel CWDM ABS box type coarse wavelength division multiplexer, the model of the passive wavelength division/combiner is C-YMTR 18.
8. The system of any one of claims 1 to 6, wherein when M is 5 and N is 3, the optical filter is a 30-channel DWDM ABS cassette dense wavelength division two-branch optical filter, the optical filter having a model number D-YMTR30-6-2, and the passive wavelength division/combiner is a 30-channel DWDM ABS cassette dense wavelength division multiplexer having a model number D-YMTR 30.
9. The system of any one of claims 1 to 6, wherein when M is 6 and N is 3, the optical filter is a 36-channel DWDM ABS cassette dense wavelength division two-branch optical filter, the optical filter having a model number D-YMTR36-6-2, and the passive wavelength division/combiner is a 36-channel DWDM ABS cassette dense wavelength division multiplexer having a model number D-YMTR 36.
10. The system of claim 1, wherein the connected base station is a 5G base station.
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| CN202122532611.9U CN215871425U (en) | 2021-10-20 | 2021-10-20 | Forward-transmission chain type network system |
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| CN202122532611.9U CN215871425U (en) | 2021-10-20 | 2021-10-20 | Forward-transmission chain type network system |
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