CN212969926U

CN212969926U - Broadcasting and TV 5G fuses access network system

Info

Publication number: CN212969926U
Application number: CN202022109724.3U
Authority: CN
Inventors: 郑新源
Original assignee: Hangzhou Xingenuo Technology Co ltd
Current assignee: Hangzhou Xingenuo Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-04-13
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a broadcasting and TV 5G fusion access network system, which comprises a front end, an optical distribution network, a 5G optical platform, a coaxial access network and an EOC terminal; the front end is connected with an optical distribution network, the optical distribution network is connected with a 5G optical platform, the 5G optical platform is connected with a coaxial access network, and the coaxial access network is connected with an EOC terminal; the front end converts an input broadband IP signal into a 10GPON optical signal, converts an input TV radio frequency signal into a TV optical signal, and mixes the 10GPON optical signal and the TV optical signal to output an optical signal; the output optical signal is input into an optical distribution network to be branched and transmitted to a 5G optical platform, the 5G optical platform processes the input optical signal into two paths, one path is wirelessly output through 5G, the other path is input into a coaxial access network, the coaxial access network carries out branched transmission to an EOC terminal, and conversion of a radio frequency signal and an IP signal is achieved.

Description

Broadcasting and TV 5G fuses access network system

Technical Field

The utility model relates to a radio and television technical field especially relates to a broadcasting and TV 5G fuses access network system.

Background

The development of the information society makes people more and more leave the convenience provided by the network technology, and for the radio and television operators, the existing network resources are utilized to the maximum extent, the transformation is carried out by using smaller investment, and the broadband users are rapidly developed, so that the development is a huge challenge and a historical opportunity in the radio and television industry.

Because of the characteristics of high bandwidth and easy maintenance, the EPON technology becomes the mainstream bearer technology of the current FTTX, and the current industry chain is well developed, which is the preferred technology for the access network construction of the telecom operator. However, because the cost of directly connecting to the user by using the optical fiber on the premise network level is high, the traditional telecom operators basically adopt the scheme of FTTB + LAN or FTTB + DSL, so that the best network performance is obtained on the premise of saving the investment of the premise network as much as possible.

Broadcasting and TV operators are long dedicated to the construction of HFC networks, possess huge HFC access networks, and can realize the maximum practicability and economy if HFC can be used as an entrance medium. Therefore, how to merge two media, namely optical fiber and HFC, to deeply mine the existing network value is concerned by the radio and television operators.

The EPON + EOC technology is a digital bandwidth user access network which is constructed on the basis of the existing HFC network and is suitable for a broadcast television network system, and synthesizes Ethernet signals into coaxial cables by using an advanced modulation and demodulation technology on the premise of not influencing the normal work of the existing CATV, and transmits the signals together with the original CATV signals so as to bear services such as data, voice, video and the like based on IP. The original one-way CATV network is transformed into a two-way broadband network platform which is two-way and can bear various services with less transformation cost and engineering quantity, and the method has good adaptability and flexible networking scheme.

However, China radio and television has PON + EOC as a wired bidirectional network of the mainstream technology. However, with the development of multi-screen user terminals, especially the popularization and application of intelligent mobile terminals, broadcasting and television are more and more passive in competition. For the current 5G operation, how to fully utilize the original network resources, make good use of the advantages and avoid the disadvantages, adopt the differentiation construction, take a place in the 5G operation, and is an urgent problem in the broadcasting and television industry.

In view of the above technical problems, it is desirable to improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the defect of prior art, provide a broadcasting and TV 5G fuses access network system.

In order to realize the above purpose, the utility model adopts the following technical scheme:

a broadcast and television 5G fusion access network system comprises a front end, an optical distribution network, a 5G optical platform, a coaxial access network and an EOC terminal; the front end is connected with an optical distribution network, the optical distribution network is connected with a 5G optical platform, the 5G optical platform is connected with a coaxial access network, and the coaxial access network is connected with an EOC terminal;

the front end converts an input broadband IP signal into a 10GPON optical signal, converts an input TV radio frequency signal into a TV optical signal, and mixes the 10GPON optical signal and the TV optical signal to output an optical signal; the output optical signal is input into an optical distribution network to be branched and transmitted to a 5G optical platform, the 5G optical platform processes the input optical signal into two paths, one path is wirelessly output through 5G, the other path is input into a coaxial access network, the coaxial access network carries out branched transmission to an EOC terminal, and conversion of a radio frequency signal and an IP signal is achieved.

Further, the wavelength of the TV optical signal is 1550 nm; the wavelength of the 10GEPON optical signal is 1577nm &1270 nm.

Further, the optical distribution network includes an optical fiber and an optical splitter, and the optical fiber is connected to the optical splitter.

Further, the front end includes a downlink optical transmitter, an OLT module, and a wavelength division multiplexer, and the wavelength division multiplexer is connected to the downlink optical transmitter and the OLT module, respectively.

Further, the 5G optical platform includes a wavelength division multiplexer, an optical receiving module, an ONU module, an EOC local side module, a BBU module, and an AAU module; the wavelength division multiplexer is respectively connected with the optical receiving module and the ONU module, the EOC local side module is respectively connected with the optical receiving module and the ONU module, the ONU module is connected with the BBU module, and the BBU module is connected with the AAU module.

Further, the coaxial access network comprises a coaxial cable and a branch distributor, and the coaxial cable is connected with the branch distributor.

Further, the wavelength division multiplexer is used for separating the input optical signal into a TV optical signal with a wavelength of 1550nm and a 10GEPON optical signal with a wavelength of 1577nm &1270 nm.

Further, the optical receiving module receives a TV optical signal with a wavelength of 1550nm, performs photoelectric conversion and radio frequency amplification on the received TV optical signal with the wavelength of 1550nm, and outputs a TV radio frequency signal;

the ONU module receives 10GEPON optical signals with wavelengths of 1577nm &1270nm and converts the received 10GEPON optical signals with wavelengths of 1577nm &1270nm into IP signals.

Further, the EOC module receives the IP signal and the TV radio frequency signal respectively, converts the received IP signal into a radio frequency signal, and then mixes and outputs the radio frequency signal and the TV radio frequency signal.

Further, the BBU module is responsible for baseband protocol processing, including the whole user plane and control plane protocol processing functions, and provides a backhaul interface with a core network and an inter-base station interconnection interface;

and the AAU module is used for realizing the conversion between baseband signals and radio frequency signals and the transceiving processing function of 5G radio frequency signals.

Compared with the prior art, the utility model adopts the PON + EOC technology and the 5G communication cross fusion technology, realizes the broadcast and television 5G fusion optical platform, provides wired and wireless fusion access at the network access end, expands the access terminal shape, and optimizes the public service function of the digital television network; the optical platform is in butt joint with the existing PON forwarding network of the broadcasting and television, and the construction cost of the forwarding network is saved.

Drawings

Fig. 1 is a structure diagram of a broadcast and television 5G convergence access network system according to a preferred embodiment;

FIG. 2 is a schematic front end diagram of a preferred embodiment;

FIG. 3 is a schematic diagram of a 5G optical bench according to a preferred embodiment;

FIG. 4 is a schematic diagram of a BBU module of a preferred embodiment;

fig. 5 is a schematic diagram of the AAU module of a preferred embodiment.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that, the present invention is an improvement on the structure or circuit, and the related contents of signal transmission, signal processing, etc. can be realized by the prior art.

As shown in fig. 1 to 3, the broadcast and television 5G fusion access network system provided in this embodiment includes a front end 1, an optical distribution network 2, a 5G optical platform 3, a coaxial access network 4, and an EOC terminal 5; the front end 1 is connected with an optical distribution network 2, the optical distribution network 2 is connected with a 5G optical platform 3, the 5G optical platform 3 is connected with a coaxial access network 4, and the coaxial access network 4 is connected with an EOC terminal 5;

the front end 1 converts an input broadband IP signal into a 10GPON optical signal, converts an input TV radio frequency signal into a TV optical signal, and performs mixed output of the 10GPON optical signal and the TV optical signal; the output optical signal is input into the optical distribution network 2 to be branched and transmitted into the 5G optical platform 3, the 5G optical platform 3 processes the input optical signal into two paths, one path is wirelessly output through 5G, the other path is input into the coaxial access network 4, the coaxial access network 4 carries out branched transmission to the EOC terminal 5, and the conversion of the radio frequency signal and the IP signal is realized.

In this embodiment, the wavelength of the TV optical signal is 1550 nm; the wavelength of the 10GEPON optical signal is 1577nm &1270 nm.

As shown in fig. 2, the front end 1 comprises a downstream optical transmitter 6, an OLT module 7 and a wavelength division multiplexer 8, which is connected to the downstream optical transmitter and the OLT module, respectively. Wherein the OLT module 7 is a head-end system of the 10GEPON network.

The optical distribution network 2 includes an optical fiber and an optical splitter, and the optical fiber is connected to the optical splitter.

As shown in fig. 3, the 5G optical platform 3 includes a wavelength division multiplexer 9, an optical receiving module 10, an ONU module 11, an EOC local side module 12, a BBU module 13, and an AAU module 14; the wavelength division multiplexer is respectively connected with the optical receiving module and the ONU module, the EOC local side module is respectively connected with the optical receiving module and the ONU module, the ONU module is connected with the BBU module, and the BBU module is connected with the AAU module.

The coaxial access network 4 includes a coaxial cable and a branch distributor, and the coaxial cable is connected to the branch distributor.

A broadcast and television 5G fusion access network system specifically comprises:

an OLT module 7 in the front end 1 converts an input broadband IP signal into a 10GPON optical signal with a wavelength of 1577nm &1270nm, a downlink optical transmitter 6 in the front end 1 converts an input TV radio frequency signal into a TV optical signal with a wavelength of 1550nm, and then mixes the 10GPON optical signal with the wavelength of 1577nm &1270nm and the TV optical signal with the wavelength of 1550nm by a wavelength division multiplexer, and outputs an optical signal after mixing. The output optical signal is input into the optical distribution network 2 for shunt transmission, the optical signal subjected to shunt processing is transmitted into a wavelength division multiplexer 9 of the 5G optical platform 3, and the wavelength division multiplexer 9 separates out a TV optical signal with the wavelength of 1550nm and a 10GEPON optical signal with the wavelength of 1577nm &1270 nm. TV optical signals with 1550nm wavelength are input to the optical receiving module 10 to realize photoelectric conversion and rf amplification, and the optical receiving module 10 outputs TV rf signals and inputs the TV rf signals to the EOC local side module 12. The 10GEPON optical signal having a wavelength of 1577nm &1270nm is input to the ONU module 11, and the ONU module 11 converts the 10GEPON optical signal having a wavelength of 1577nm &1270nm into an IP signal and inputs the IP signal to the EOC central office module 12. The EOC local side module 12 converts the input IP signal into a radio frequency signal, mixes the radio frequency signal with the TV radio frequency signal, and outputs the radio frequency signal (i.e., radio frequency RF cable output). After the radio frequency RF output by the EOC local side module 12 is wired, the output signal is input to the coaxial access network 4, so as to realize the shunt transmission of the radio frequency signal; and inputting the signal output by the shunt circuit into the EOC terminal to realize the conversion of the radio frequency signal and the IP signal, so as to provide the broadband access of the user.

The BBU module 13 connected to the ONU module 11 in the 5G optical platform 3 is responsible for baseband protocol processing, including the whole user plane and control plane protocol processing functions, and provides a backhaul interface with the core network and an interconnection interface between base stations. The AAU module 15 connected to the BBU module 13 realizes conversion between baseband signals and radio frequency signals and a function of transmitting and receiving 5G radio frequency signals (i.e., 5G wireless output).

The 5G radio frequency signal of the embodiment adopts a 700MHz frequency band and 4T4R transmission mode, so that the transmission loss can be effectively reduced, the coverage range is improved, and the operation cost is reduced. Through the processing of wavelength division demultiplexing, photoelectric conversion, radio frequency amplification, baseband processing, modulation and the like, two paths of output are realized, wherein one path of output is coaxial and wired, and the other path of output is 5G wireless.

As shown in fig. 4, the BBU module 13 includes a transmission interface unit 15, a baseband unit 16, and a control unit 17; the transmission interface unit 15 is connected with the baseband unit 16, and the control unit 17 is respectively connected with the transmission interface unit 15 and the baseband unit 16. The BBU module 13 is responsible for baseband protocol processing, including the whole user plane and control plane protocol processing functions, and provides a backhaul interface with the core network and an interconnection interface between base stations.

As shown in fig. 5, the AAU module 14 includes an interface unit 18, a downlink signal processing unit 19, a power amplifier unit 20, a duplexer unit 21, an antenna 22, a low-noise amplifier unit 23, and an uplink signal processing unit 24; the interface unit 18 is connected with the downlink signal processing unit 19 and the uplink signal processing unit 24 respectively, the downlink signal processing unit 19 is connected with the power amplification unit 20, the power amplification unit 20 is connected with the duplexer unit 21, the duplexer unit 21 is connected with the antenna 22 and the low-noise amplification unit 23 respectively, and the low-noise amplification unit 23 is connected with the uplink signal processing unit 24. The AAU module realizes the conversion of baseband signals and radio frequency signals and the receiving and transmitting processing functions of 5G radio frequency signals.

In this embodiment, the wavelength division multiplexer 9 may be a wavelength division multiplexer of a SUN-CWDM-55 type, in which a common end inputs an optical signal with three wavelengths of 1577nm &1550nm &1270nm, a transmission end transmits the optical signal with 1550nm, and a reflection end reflects an optical signal with two wavelengths of 1577nm &1270 nm.

The optical receiving module 10 can adopt a ZBL5432 series two-port high-level output optical receiving module, receives TV optical signals with 1550nm wavelength, realizes photoelectric conversion and radio frequency amplification functions, and outputs TV radio frequency signals.

The ONU module 11 may use a product having a model number of HN8245Q, supports the 10GEPON standard, and converts a 10GEPON optical signal having a wavelength of 1577nm and 1270nm into an IP signal.

The EOC module 12 may adopt a chip scheme with a type of MSE1000, and simultaneously support two MAC layer protocol modes of CSMA and TDMA, and the physical bandwidth is 1000 Mbps.

In the embodiment, a PON + EOC technology and a 5G communication cross fusion technology are adopted to realize a broadcast and television 5G fusion optical platform, wired and wireless fusion access is provided at a network access end, the form of the access terminal is expanded, and the public service function of a digital television network is optimized; the optical platform is in butt joint with the original PON forwarding network of the broadcasting and television, so that the construction cost of the forwarding network is saved; the 5G radio frequency signal adopts a 700MHz frequency band and a 4T4R transmission mode, so that the transmission loss can be effectively reduced, the coverage range is improved, and the operation cost is reduced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A broadcast and television 5G fusion access network system is characterized by comprising a front end, an optical distribution network, a 5G optical platform, a coaxial access network and an EOC terminal; the front end is connected with an optical distribution network, the optical distribution network is connected with a 5G optical platform, the 5G optical platform is connected with a coaxial access network, and the coaxial access network is connected with an EOC terminal;

2. The broadcast and television 5G convergence access network system of claim 1, wherein the wavelength of the TV optical signal is 1550 nm; the wavelength of the 10GEPON optical signal is 1577nm &1270 nm.

3. The broadcast and television 5G fusion access network system as claimed in claim 1, wherein the optical distribution network comprises an optical fiber and an optical splitter, and the optical fiber is connected with the optical splitter.

4. The broadcast and television 5G convergence access network system as claimed in claim 1, wherein the front end comprises a downstream optical transmitter, an OLT module and a wavelength division multiplexer, and the wavelength division multiplexer is respectively connected with the downstream optical transmitter and the OLT module.

5. The broadcast and television 5G convergence access network system of claim 2, wherein the 5G optical platform comprises a wavelength division multiplexer, an optical receiving module, an ONU module, an EOC local side module, a BBU module and an AAU module; the wavelength division multiplexer is respectively connected with the optical receiving module and the ONU module, the EOC local side module is respectively connected with the optical receiving module and the ONU module, the ONU module is connected with the BBU module, and the BBU module is connected with the AAU module.

6. The broadcast 5G convergence access network system of claim 1, wherein the coaxial access network comprises a coaxial cable and a branch distributor, and the coaxial cable is connected with the branch distributor.

7. The broadcasting and 5G convergence access network system of claim 5, wherein the wavelength division multiplexer is configured to separate the incoming optical signal into a TV optical signal with a wavelength of 1550nm and a 10GEPON optical signal with a wavelength of 1577nm &1270 nm.

8. The broadcast and television 5G convergence access network system according to claim 7, wherein the optical receiving module receives a TV optical signal with a wavelength of 1550nm, performs optical-electrical conversion and radio frequency amplification on the received TV optical signal with the wavelength of 1550nm, and outputs a TV radio frequency signal;

9. The broadcast and television 5G convergence access network system according to claim 8, wherein the EOC local side module receives IP signals and TV radio frequency signals respectively, converts the received IP signals into radio frequency signals, and mixes and outputs the radio frequency signals and the TV radio frequency signals.

10. The system of claim 5, wherein the BBU module is configured to handle baseband protocol processing, including whole user plane and control plane protocol processing functions, and provide a backhaul interface with a core network and an inter-base station interconnection interface;