CN210629500U - 5G optical signal forward transmission architecture based on composite wave transmission - Google Patents
5G optical signal forward transmission architecture based on composite wave transmission Download PDFInfo
- Publication number
- CN210629500U CN210629500U CN201920883859.XU CN201920883859U CN210629500U CN 210629500 U CN210629500 U CN 210629500U CN 201920883859 U CN201920883859 U CN 201920883859U CN 210629500 U CN210629500 U CN 210629500U
- Authority
- CN
- China
- Prior art keywords
- optical
- indoor
- way
- outdoor
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model relates to a 5G optical signal fronthaul framework based on composite wave transmission, fronthaul framework includes the outdoor part of base station and the indoor part of base station, the outdoor part of base station is including embracing pole, three active antenna unit AAU, outdoor double-circuit triplexer, three antenna branch optical cables and zooming out the optical cable, indoor portion is including indoor double-circuit triplexer, three indoor branch optical cables and baseband processing unit, and three active antenna unit and outdoor double-circuit triplexer are all fixed on embracing the pole, connect through three antenna branch optical cables between three active antenna unit and the outdoor double-circuit triplexer respectively; the baseband processing unit and the indoor double-path three-beam splitter are respectively connected by three indoor branch optical cables. Compared with the traditional architecture which only uses 6-core optical fiber, the remote optical cable in the technical scheme only uses two-core optical fiber, saves the usage amount of 2/3 optical fiber, saves optical fiber and relieves the pressure of urban communication pipeline congestion.
Description
Technical Field
The invention relates to an architecture, in particular to a 5G optical signal forward transmission architecture based on composite wave transmission, and belongs to the technical field of mobile communication.
Background
In the network architecture of 3G and 4G mobile communication, a Radio Remote Unit (RRU) and a Base Band Unit (BBU) of a base station device are separately placed from radio frequency processing units (RRUs) and antennas, the BBU is placed in an indoor machine room, the RRUs and the antennas are installed on an outdoor iron tower (or an iron pole), each antenna is provided with one RRU, the RRUs are connected with the antennas by coaxial RF cables, and the BBUs are connected with the RRUs by optical cables. Because the base station generally has three antennas and three RRUs, each RRU of 3G and 4G has two optical fibers to be connected with the BBU, and 6 optical fibers are needed for connecting the RRU with the BBU by one outdoor base station, so that the consumption of optical fiber resources is large. However, in 5G mobile communication, the used radio frequency is higher than that of 3G and 4G, the radio signal coverage radius is smaller, that is, a larger number of 5G base stations are required to be built in an area with the same size, and if a network architecture of the base stations according to 3G and 4G inevitably consumes more optical fiber resources, which brings great pressure on resources such as optical fiber cables, urban communication pipelines, and the like, a new scheme is urgently needed for a 5G optical signal forward-transmission architecture to solve the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a 5G optical signal forward transmission architecture based on composite wave transmission, and the scheme is used for solving the problem of saving the optical fiber usage amount in the forward transmission of the base station in the construction of the 5G base station, so that the forward transmission optical fiber usage amount of the 5G base station is one third of the current 3G and 4G base station modes.
In order to solve the technical problems, the technical scheme of the invention is as follows: A5G optical signal forward transmission architecture based on composite wave transmission comprises a base station outdoor part and a base station indoor part, wherein the base station outdoor part comprises a holding pole, three Active Antenna Units (AAUs), an outdoor two-way three-optical splitter, three antenna branch optical cables and a remote optical cable, the indoor part comprises an indoor two-way three-optical splitter, three indoor branch optical cables and a baseband processing unit, the three active antenna units and the outdoor two-way three-optical splitter are fixed on the holding pole, and the three active antenna units and the outdoor two-way three-optical splitter are connected through the three antenna branch optical cables; the Base Band Unit (BBU) and the indoor double-path three-optical splitter are respectively connected by three indoor branch optical cables, and the remote optical cable is arranged between the outdoor double-path three-optical splitter and the indoor double-path three-optical splitter.
As an improvement of the present invention, the outdoor two-way three-way optical splitter and the indoor two-way three-way optical splitter both include two one-to-three optical paths, where one optical path is used for combining the three optical signals, and the other optical path is used for splitting the three optical signals.
As an improvement of the present invention, the indoor two-way three-way optical splitter and the outdoor two-way three-way optical splitter have four dual optical path ports, one of which is a combining port, and the other three of which are branch ports.
As an improvement of the invention, the Active Antenna Unit (AAU) is composed of an antenna element array, an RF signal processing unit and an antenna transceiving optical module, wherein the antenna transceiving optical module is inserted at the bottom of the Active Antenna Unit (AAU), is composed of a laser signal transmitting part and a receiving part, and can simultaneously receive and transmit optical signals.
The antenna branch optical cable is an optical cable containing two-core optical fibers (a pair of optical fibers), one optical fiber receives one optical fiber for transmission, one end of the antenna branch optical cable is inserted into the antenna transmitting and receiving optical module, and the other end of the antenna branch optical cable is inserted into one branch port of the outdoor two-way three-way optical splitter.
As an improvement of the present invention, the remote optical cable is an optical cable containing two-core optical fibers (a pair of optical fibers) or two optical fibers (a pair of optical fibers) occupied in the same multi-core optical cable when the remote optical cable is routed with the remote optical cables of other base stations, one optical fiber receives one optical fiber, and two ends of the two (a pair) optical fibers in the remote optical cable are respectively connected with the path combining ends of the outdoor two-way three-way optical splitter and the indoor two-way three-way optical splitter.
As an improvement of the present invention, the indoor branch optical cables include three optical fibers, each optical fiber includes two cores (a pair of optical fibers), one end of each indoor branch optical cable is connected to one branch port of the indoor two-way optical splitter, and the other end of each indoor branch optical cable is connected to a corresponding indoor transceiver module on the BBU.
As an improvement of the present invention, three pairs (6) of optical modules are commonly used on the indoor BBU and the outdoor AAU, that is, one indoor transceiver optical module on the indoor BBU and one antenna transceiver optical module on the AAU form a pair of communication loops, each pair of optical modules uses one light wavelength for receiving and transmitting, the three pairs of optical modules use three different wavelengths for receiving and transmitting, and the three pairs of optical modules are combined by two-way and three-way optical splitters outside the room (inside) and transmitted in a remote optical cable in a Wavelength Division Multiplexing (WDM) manner.
Compared with the prior art, the invention has the beneficial effects that
1) The whole system of the technical scheme is compact and ingenious in structural design, the outdoor double-path three-way optical splitter and the indoor double-path three-way optical splitter are both composed of two one-to-three optical paths, one optical path is used for combining three branch optical signals, and the other optical path is used for branching the three branch optical signals;
2) in the technical scheme, the remote optical cable only uses two-core optical fibers, so that compared with the traditional architecture which uses 6-core optical fibers, the usage amount of 2/3 optical fibers is saved, the optical fibers are saved, and the pressure of crowding urban communication pipelines is relieved;
3) in the technical scheme, 3 optical signals are transmitted by the optical module in different optical wavelengths (WDM transmission mode), so that the signals of three antennas 'AAU' do not interfere with each other when being transmitted in a remote optical cable consisting of 2-core optical fibers.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of optical paths and ports of a two-way three-beam splitter;
in the figure: 1. the system comprises an antenna branch optical cable, 2 an outdoor double-path three-optical splitter, 3 an remote optical cable, 4 an indoor double-path three-optical splitter, 5 an indoor branch optical cable, 6 a baseband processing unit (BBU), 7, an active antenna unit (AAU, 8), a holding pole, 7-1, an antenna element array, 7-2, an RF signal processing unit, 7-3, an antenna transceiving optical module, 6-1 and an indoor transceiving optical module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.
Example 1: referring to fig. 1, a 5G optical signal forward transmission architecture based on composite wave transmission includes a base station outdoor part and a base station indoor part, the base station outdoor part includes a pole 8, three active antenna units 7 (i.e., AAU), an outdoor two-way triplexer 2, three antenna branch optical cables 1 and a remote optical cable 3, the indoor part includes an indoor two-way triplexer 4, three indoor branch optical cables 5 and a baseband processing unit 6, the three active antenna units 7 and the outdoor two-way triplexer 2 are all fixed on the pole 8, and the three active antenna units 7 and the outdoor two-way triplexer 2 are connected through the three antenna branch optical cables 1; the baseband processing unit 6, namely the BBU, and the indoor two-way three-way optical splitter 4 are respectively connected by three indoor branch optical cables 5, the remote optical cable 3 is arranged between the outdoor two-way three-way optical splitter 2 and the indoor two-way three-way optical splitter 4, the outdoor two-way three-way optical splitter 2 and the indoor two-way three-way optical splitter 4 are respectively composed of two three-in-three optical paths, one optical path is used for combining three optical signals, the other optical path is used for splitting three optical signals, see fig. 2, the indoor two-way three-way optical splitter 4 and the outdoor two-way three-way optical splitter 2 share four double optical path ports, one of the two double optical path ports is a combined port, the other three double optical paths are branch ports, the active antenna unit 7, namely the AAU, is composed of an antenna element array 7-1, an RF signal processing unit 7-2 and an antenna transceiving optical module 7-3, the antenna transceiving optical module 7-3 is inserted at, the optical fiber remote cable comprises a laser signal sending part and a laser signal receiving part, and can simultaneously receive and send optical signals, the antenna branch optical cable 1 comprises three optical cables, each optical cable comprises two-core optical fibers (a pair of optical fibers), one optical fiber receives one optical fiber for sending, one end of the antenna branch optical cable is inserted on an antenna receiving and sending optical module 7-3, the other end of the antenna branch optical cable is inserted on a branch port of the outdoor two-way three-way optical splitter 2, the remote optical cable 3 is an optical cable comprising two-core optical fibers (a pair of optical fibers) or two optical fibers (a pair of optical fibers) occupied in the same multi-core optical cable when the remote optical cable is routed with remote optical cables of other base stations, one optical fiber receives one optical fiber for sending, two ends of two (a pair) optical fibers in the remote optical cable are respectively connected with a combining end of the outdoor two-way three-way optical splitter and the indoor two-way three-way optical splitter, the indoor, one end of each indoor branch optical cable is connected with a branch port of the indoor two-way three-way optical splitter, the other end of each indoor branch optical cable is connected with a corresponding indoor transceiver optical module on the BBU, three pairs (6) of optical modules are commonly used on the indoor BBU and the outdoor AAU, namely, one indoor transceiver optical module on the indoor BBU and one antenna transceiver optical module on the AAU form a pair of communication loops, each pair of optical modules uses one light wavelength for receiving and transmitting, the three pairs of optical modules adopt three different wavelengths for receiving and transmitting, and the three pairs of optical modules are combined by the indoor (indoor) and outdoor two-way three-way optical splitters and then transmitted in a Wavelength Division Multiplexing (WDM) mode in the remote optical cable 3; the three active antenna units 7 and the outdoor double-path three-optical splitter 2 are respectively connected by three antenna branch optical cables, and the length of each antenna branch optical cable is not more than 10 meters. The baseband processing unit 6 and the indoor double-path three-beam splitter 4 are respectively connected by three indoor branch optical cables, and the length of each indoor branch optical cable is not more than 15 meters; the outdoor two-way three-optical splitter and the outdoor two-way three-optical splitter are far away from each other and are connected by a remote optical cable 3, and the longest length of the remote optical cable 3 can reach 20 kilometers.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (8)
1. A5G optical signal forward transmission architecture based on composite wave transmission is characterized by comprising a base station outdoor part and a base station indoor part, wherein the base station outdoor part comprises a holding pole, three Active Antenna Units (AAU), an outdoor two-way three-optical splitter, three antenna branch optical cables and a remote optical cable; the base band processing unit, namely the BBU and the indoor double-path three-optical splitter, are respectively connected by three indoor branch optical cables, and the remote optical cable is arranged between the outdoor double-path three-optical splitter and the indoor double-path three-optical splitter.
2. The architecture of claim 1, wherein the outdoor and indoor two-way triplexers are each composed of two triplexers, one of which is used for combining the three optical signals, and the other of which is used for splitting the three optical signals.
3. The architecture of claim 2, wherein the indoor two-way triplexer and the outdoor two-way triplexer have four dual-optical ports, one of which is a combiner port and the other three of which are branch ports.
4. The 5G optical signal forwarding architecture based on combined wave transmission according to claim 1, 2 or 3, wherein the Active Antenna Unit (AAU) is composed of an antenna element array, an RF signal processing unit and an antenna transceiver module, the antenna transceiver module is inserted at the bottom of the active antenna unit and is composed of a laser signal transmitting part and a laser signal receiving part, and the laser signal transmitting part and the laser signal receiving part can simultaneously receive and transmit optical signals.
5. The 5G optical signal forwarding architecture based on combined wave transmission according to claim 1, 2 or 3, wherein the antenna branch optical cable includes a two-core optical fiber cable, one optical fiber receives one optical fiber for transmission, one end of the antenna branch optical cable is inserted into the antenna transceiver module, and the other end of the antenna branch optical cable is inserted into one branch port of the outdoor two-way three-way optical splitter.
6. The architecture of claim 1, 2 or 3, wherein the remote optical cable is an optical cable with two optical fibers or two optical fibers occupied in the same multi-core optical cable when the remote optical cable is routed with the remote optical cables of other base stations, one optical fiber receives one optical fiber, and two ends of the two optical fibers in the remote optical cable are respectively connected to the combining end of the outdoor two-way three-way optical splitter and the indoor two-way three-way optical splitter.
7. The 5G optical signal forwarding architecture based on combined wave transmission according to claim 1, 2 or 3, wherein the number of the indoor branch optical cables is three, each indoor branch optical cable includes two-core optical fibers, one end of each indoor branch optical cable is connected to one branch port of the indoor two-way three-way optical splitter, and the other end of each indoor branch optical cable is connected to a corresponding indoor transceiver optical module on the BBU.
8. The 5G optical signal forwarding architecture based on combined wave transmission according to claim 1, 2 or 3, wherein three pairs of 6 optical modules are used on the indoor BBU and the outdoor AAU, that is, one indoor transceiving optical module on the indoor BBU and one antenna transceiving optical module on the AAU form a pair of communication loops, each pair of optical modules uses one wavelength of light for receiving and transmitting, the three pairs of optical modules use three different wavelengths of receiving and transmitting wavelengths, and the optical signals are transmitted in a wavelength division multiplexing WDM manner in the remote optical cable after being combined by the indoor and outdoor two-way three-way optical splitters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883859.XU CN210629500U (en) | 2019-06-13 | 2019-06-13 | 5G optical signal forward transmission architecture based on composite wave transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883859.XU CN210629500U (en) | 2019-06-13 | 2019-06-13 | 5G optical signal forward transmission architecture based on composite wave transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210629500U true CN210629500U (en) | 2020-05-26 |
Family
ID=70762037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920883859.XU Active CN210629500U (en) | 2019-06-13 | 2019-06-13 | 5G optical signal forward transmission architecture based on composite wave transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210629500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212986A (en) * | 2019-06-13 | 2019-09-06 | 苏州市职业大学 | A kind of 5G optical signal forward pass framework based on multiplex transmission |
-
2019
- 2019-06-13 CN CN201920883859.XU patent/CN210629500U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212986A (en) * | 2019-06-13 | 2019-09-06 | 苏州市职业大学 | A kind of 5G optical signal forward pass framework based on multiplex transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101814957B (en) | WiFi (Wireless Fidelity) optical fiber radio central control system | |
| CN204269891U (en) | A kind of four optical-fiber cable assembly | |
| CN103840906A (en) | OTN system and method supporting supervisory channel light single-optical-fiber bidirectional transmission | |
| CN104467974A (en) | Single-fiber bidirectional BOSA structure for high-speed transceiving system | |
| CN110535530A (en) | The forward pass interface method and system of Smallcell | |
| CN210629500U (en) | 5G optical signal forward transmission architecture based on composite wave transmission | |
| CN102394698A (en) | Simulated optical fiber repeater distribution system integrated with coverage antenna | |
| CN113347699A (en) | Base station optical fiber time service system based on BD/GPS double antennas | |
| CN201114046Y (en) | Digital optical fibre repeater station system possessing up link multichannel receiving function | |
| CN103957536A (en) | Wireless access network system based on C-RAN | |
| CN112564803A (en) | 5G forwarding network transmission system | |
| CN105848170A (en) | Indoor distribution system | |
| CN110212986A (en) | A kind of 5G optical signal forward pass framework based on multiplex transmission | |
| CN210536642U (en) | Optical module assembly and optical communication transmission system | |
| CN110572833A (en) | Indoor distribution system and network side equipment | |
| CN210297706U (en) | Active fiber multiplier and system | |
| CN203014823U (en) | Dual-frequency intelligent optical radio frequency integrated terminal | |
| CN203327011U (en) | BBU+RRU networking architecture | |
| CN113225132A (en) | 5G base station coupling zoom-out system | |
| CN211265685U (en) | Outdoor wireless transmission three-port combiner | |
| CN202077030U (en) | WiFi remote-end access point and radio over fiber (RoF) switching system | |
| CN103165967B (en) | A kind of coupler and the common transport system based on repeater room subsystem | |
| CN205847266U (en) | A kind of distributed antenna system | |
| CN201450507U (en) | One-dragged multi-fiber optic repeater with combined radio frequency combining branch and optical branch | |
| CN204290976U (en) | A kind of simulation repeater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |