CN116980572A - Device for transmitting 5G signal in cable television network - Google Patents
Device for transmitting 5G signal in cable television network Download PDFInfo
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- CN116980572A CN116980572A CN202311063182.2A CN202311063182A CN116980572A CN 116980572 A CN116980572 A CN 116980572A CN 202311063182 A CN202311063182 A CN 202311063182A CN 116980572 A CN116980572 A CN 116980572A
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- 230000003287 optical effect Effects 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000013307 optical fiber Substances 0.000 claims description 12
- 230000008030 elimination Effects 0.000 claims description 11
- 238000003379 elimination reaction Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a device for transmitting 5G signals in a cable television network, which is characterized in that an uplink port side receives optical signals of two different service carrier wavelengths of a cable television and a 5G of front-end downlink data transmission, the 5G frequency band is separated from the cable television service carrier frequency band through a wavelength division multiplexing module, the optical signals of the 5G service carrier wavelength are transmitted to a 5G room division source through the 5G frequency band, the optical signals of the 5G service carrier wavelength are converted into radio frequency signals of the 5G service carrier wavelength by the 5G room division source and are transmitted to an impedance converter, the impedance converter carries out impedance conversion, the radio frequency signals of the 5G service carrier wavelength after the impedance conversion are transmitted to a band-pass filter, the band-pass filter carries out filtering transmission in the 5G frequency band to a coupler, and then the radio frequency signals of the 5G service carrier wavelength in the 5G service carrier wavelength after the downlink data transmission filtering and the radio frequency signals of the cable television service carrier wavelength after the downlink data transmission are coupled to a signal source and output to a user side.
Description
Technical Field
The invention relates to the technical field of coaxial cable signal transmission, in particular to a device for transmitting 5G signals in a cable television network.
Background
Through years of construction and development of the national broadcast and television wired network, the coaxial cable bidirectional network transformation work of most urban buildings in the whole country is completed, and the household deep coverage is realized. At present, the broadcast and television coaxial network is mainly used for transmitting digital television signals and bidirectional broadband data signals. Since 2021, the china broadcast television formally starts 5G NR network construction work, and it is expected that 48 ten thousand 700MHz base stations are newly built to achieve nationwide 5G network signal continuous coverage. The wireless signal faces a great link loss in the through-wall coverage indoor scene, which results in serious indoor coverage deficiency, so that a new indoor subsystem is needed to increase indoor signal strength.
According to the design construction of the traditional indoor division system, the feeder line network system is deployed on a large scale, and the problems of long construction period, large investment, difficult property coordination and the like are faced. The original coaxial network of the broadcast television converts optical signals into radio frequency signals through the optical workstation to be transmitted in the coaxial network, the using frequency band is 87 MHz-862 MHz, the cable and distribution design loss is about 53dB, the cable and coaxial distribution network can be used as a 700MHz indoor subsystem in combination with the using frequency and the link loss, but the optical workstation is only suitable for transmitting cable television signals at present and does not have the functions of wireless signal processing and forwarding.
Disclosure of Invention
The invention aims to provide a device capable of transmitting 5G signals in a cable television network with wireless signal processing and forwarding functions so as to realize deep coverage of indoor 5G wireless signals.
The device for transmitting 5G signals in the cable television network comprises: the wavelength division multiplexing module is used for receiving optical signals of two different service carrier wavelengths of the cable television and the 5G of the front-end downlink data transmission, separating a 5G frequency band from the cable television service carrier frequency band and transmitting the optical signals of the 5G service carrier wavelength to a 5G room division source through the 5G frequency band; the method comprises the steps of receiving uplink data, uploading a 5G user return data signal through a 5G indoor distribution source, and combining and uploading a 5G user return optical signal in a 5G frequency band and a cable television reverse optical signal to a front end;
the 5G room division source receives the optical signal with the 5G service carrier wavelength, converts the optical signal into a radio frequency signal with the 5G service carrier wavelength and transmits the radio frequency signal to the impedance converter; receiving a 5G user feedback radio frequency signal uploaded by the impedance converter, converting the 5G user feedback radio frequency signal into an optical signal and uploading the optical signal to the wavelength division multiplexing module;
the impedance converter is used for receiving the radio frequency signal with the 5G service carrier wavelength, carrying out impedance conversion and transmitting the radio frequency signal with the 5G service carrier wavelength after impedance conversion to the band-pass filter; receiving a 5G user return data signal returned by the band-pass filter and uploading the data signal to a 5G indoor distribution information source;
the band-pass filter receives the radio frequency signal of the 5G service carrier wave wavelength after impedance conversion, and filters and transmits the radio frequency signal of the 5G service carrier wave wavelength to the coupler in the 5G frequency band; the receiving coupler separates out the 5G user feedback data signal and transmits the data signal back to the impedance converter;
the coupler is used for receiving the radio frequency signal of the 5G service carrier wave wavelength in the 5G frequency band after the downlink data transmission and filtering and the radio frequency signal of the cable television service carrier wave wavelength after the downlink data transmission and filtering, coupling the radio frequency signal into a signal source, and outputting the signal source to a user side; and 5G user feedback data signals of the uplink data transmission of the user side and cable television reverse data signals are received to separate out the 5G user feedback data signals and are transmitted to the band-pass filter.
When the downlink data is forwarded, the device for transmitting the 5G signal in the cable television network separates a 5G frequency band from a cable television service carrier frequency band by receiving optical signals of two different service carrier wavelengths of front end downlink data transmission from an upper port side, the 5G frequency band transmits the optical signals of the 5G service carrier wavelength to a 5G room division source, the 5G room division source converts the optical signals of the 5G service carrier wavelength into radio frequency signals of the 5G service carrier wavelength to an impedance converter, the impedance converter performs impedance conversion, the radio frequency signals of the 5G service carrier wavelength after the impedance conversion are transmitted to a band-pass filter, the band-pass filter performs filtering transmission in the 5G frequency band to a coupler, and the radio frequency signals of the 5G service carrier wavelength in the 5G frequency band after the downlink data transmission filtering and the radio frequency signals of the cable television service carrier wavelength after the downlink data transmission are coupled to a signal source to be output to a user side; when uplink data is forwarded, the coupler separates a 5G user return data signal from a 5G user return data signal and a cable television reverse data signal of user side uplink data transmission, the 5G user return data signal is uploaded to a 5G indoor distribution information source through the band-pass filter and the impedance converter, the 5G indoor distribution information source is modulated into an optical signal and uploaded to the wavelength division multiplexing module, the wavelength division multiplexing module combines the 5G user return optical signal in a 5G frequency band with the cable television reverse optical signal of uplink data and returns the optical signal to the front end from an uplink port side, so that an optical workstation can have the functions of 5G wireless signal processing and forwarding in a cable television network. In addition, the interference between the 5G wireless signal and the wired signal can be further physically isolated through the band-pass filter, so that the reliability of the output 5G wireless signal is ensured.
As a preferred embodiment of the present invention, the method further comprises: the cable television optical fiber transceiver receives an optical signal with the cable television service carrier wavelength, converts the optical signal into a radio frequency signal with the cable television service carrier wavelength and transmits the radio frequency signal to the band elimination filter; the cable television reverse data signal returned by the band-stop filter is received, modulated into an optical signal and uploaded to the wavelength division multiplexing module;
the band elimination filter receives the radio frequency signal with the cable television service carrier wave wavelength, and filters and transmits the radio frequency signal with the cable television service carrier wave wavelength to the coupler; the receiving coupler separates out the cable television reverse data signal and returns the cable television reverse data signal to the cable television optical fiber transceiver.
When the downlink data is forwarded, optical signals of two different service carrier wavelengths of the cable television and the 5G are received from the upper interface side, the optical signals of the cable television service carrier wavelengths are separated through a wavelength division multiplexing module, and are converted into radio frequency signals of the cable television service carrier wavelengths through a cable television optical fiber transceiver and are transmitted to a band elimination filter, and the band elimination filter is used for filtering and transmitting the radio frequency signals to a coupler for coupling output to a user side; when uplink data is forwarded, the band elimination filter receives the coupler to separate out the cable television reverse data signal and transmits the cable television reverse data signal back to the cable television optical fiber transceiver, the cable television optical fiber transceiver modulates the cable television reverse data signal into an optical signal and uploads the optical signal to the wavelength division multiplexing module, so that the optical workstation not only maintains the function of the cable television signal, but also has the functions of 5G wireless signal processing and forwarding, thereby meeting more use requirements of users and having better user experience.
Drawings
Fig. 1 is a system block diagram of an apparatus for transmitting 5G signals in a cable television network according to the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, it should be noted that, if directional indications (such as up, down, left, right, front, rear, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial … …) are involved in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
An apparatus for transmitting 5G signals in a cable television network, as shown in fig. 1, comprising: the system comprises a wavelength division multiplexing module, a 5G room division source, a band-pass filter and a coupler. When downlink data is forwarded, optical signals of two different service carrier wavelengths of a cable television and a 5G are received from an upper port side, the 5G frequency band is separated from the cable television service carrier frequency band through a wavelength division multiplexing module, the optical signals of the 5G service carrier wavelength are transmitted to a 5G room division source through the 5G frequency band, the optical signals of the 5G service carrier wavelength are converted into radio frequency signals of the 5G service carrier wavelength by the 5G room division source and are transmitted to an impedance converter, the impedance converter carries out impedance conversion, the radio frequency signals of the 5G service carrier wavelength after impedance conversion are transmitted to a band-pass filter, the band-pass filter carries out filtering transmission to a coupler in the 5G frequency band, and then the radio frequency signals of the 5G service carrier wavelength in the 5G frequency band after the downlink data transmission and the radio frequency signals of the downlink data transmission are coupled to a signal source and are output to a user side; when uplink data is forwarded, the coupler separates a 5G user return data signal from a 5G user return data signal and a cable television reverse data signal of user side uplink data transmission, the 5G user return data signal is uploaded to a 5G indoor distribution information source through the band-pass filter and the impedance converter, the 5G indoor distribution information source is modulated into an optical signal and uploaded to the wavelength division multiplexing module, the wavelength division multiplexing module combines the 5G user return optical signal in a 5G frequency band with the cable television reverse optical signal of uplink data and returns the optical signal to the front end from an uplink port side, so that an optical workstation can have the functions of 5G wireless signal processing and forwarding in a cable television network.
In addition, the optical fiber transceiver of the cable television and the band elimination filter are also included, the optical signals of the cable television service carrier wave wavelength are separated through the wavelength division multiplexing module by receiving the optical signals of two different service carrier wave wavelengths of the cable television and the 5G of the front end downlink data transmission from the upper port side, the optical signals are converted into the radio frequency signals of the cable television service carrier wave wavelength through the cable television optical fiber transceiver, the radio frequency signals are transmitted to the band elimination filter, and the band elimination filter is used for filtering and transmitting the radio frequency signals to the coupler to be coupled and output to the user side; when uplink data is forwarded, the band elimination filter receives the coupler to separate out the cable television reverse data signal and transmits the cable television reverse data signal back to the cable television optical fiber transceiver, the cable television optical fiber transceiver modulates the cable television reverse data signal into an optical signal and uploads the optical signal to the wavelength division multiplexing module, so that the optical workstation not only maintains the function of the cable television signal, but also has the functions of 5G wireless signal processing and forwarding, thereby meeting more use requirements of users and having better user experience.
In this embodiment, the 5G frequency band is set between 690 MHz and 800MHz, so the frequency bands of the band-pass filter and the band-stop filter are both set between 690 MHz and 800MHz, the band-pass filter can ensure that the 5G indoor signal source output signal only covers the 690 MHz-800 MHz range and outputs to the coupler, thereby reducing interference to the cable television signal during coupling, the band-stop filter attenuates and blocks the 690 MHz-800 MHz range of the cable television optical fiber transceiver output signal, reducing interference to the wireless signal during coupling, and thus ensuring reliability of outputting the 5G wireless signal.
The above embodiments are only for illustrating the detailed aspects of the present invention, and the present invention is not limited to the detailed aspects, i.e., it does not mean that the present invention must be implemented depending on the detailed aspects. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (2)
1. An apparatus for transmitting 5G signals in a cable television network, comprising:
the wavelength division multiplexing module is used for receiving optical signals of two different service carrier wavelengths of the cable television and the 5G of the front-end downlink data transmission, separating a 5G frequency band from the cable television service carrier frequency band and transmitting the optical signals of the 5G service carrier wavelength to a 5G room division source through the 5G frequency band; the method comprises the steps of receiving uplink data, uploading a 5G user return data signal through a 5G indoor distribution source, and combining and uploading a 5G user return optical signal in a 5G frequency band and a cable television reverse optical signal to a front end;
the 5G room division source receives the optical signal with the 5G service carrier wavelength, converts the optical signal into a radio frequency signal with the 5G service carrier wavelength and transmits the radio frequency signal to the impedance converter; receiving a 5G user feedback radio frequency signal uploaded by the impedance converter, converting the 5G user feedback radio frequency signal into an optical signal and uploading the optical signal to the wavelength division multiplexing module;
the impedance converter is used for receiving the radio frequency signal with the 5G service carrier wavelength, carrying out impedance conversion and transmitting the radio frequency signal with the 5G service carrier wavelength after impedance conversion to the band-pass filter; receiving a 5G user return data signal returned by the band-pass filter and uploading the data signal to a 5G indoor distribution information source;
the band-pass filter receives the radio frequency signal of the 5G service carrier wave wavelength after impedance conversion, and filters and transmits the radio frequency signal of the 5G service carrier wave wavelength to the coupler in the 5G frequency band; the receiving coupler separates out the 5G user feedback data signal and transmits the data signal back to the impedance converter;
the coupler is used for receiving the radio frequency signal of the 5G service carrier wave wavelength in the 5G frequency band after the downlink data transmission and filtering and the radio frequency signal of the cable television service carrier wave wavelength after the downlink data transmission and filtering, coupling the radio frequency signal into a signal source, and outputting the signal source to a user side; and 5G user feedback data signals of the uplink data transmission of the user side and cable television reverse data signals are received to separate out the 5G user feedback data signals and are transmitted to the band-pass filter.
2. The apparatus for transmitting 5G signals over a cable television network as set forth in claim 1, further comprising: the cable television optical fiber transceiver receives an optical signal with the cable television service carrier wavelength, converts the optical signal into a radio frequency signal with the cable television service carrier wavelength and transmits the radio frequency signal to the band elimination filter; the cable television reverse data signal returned by the band-stop filter is modulated into an optical signal and uploaded to the wavelength division multiplexing module;
the band elimination filter receives the radio frequency signal with the cable television service carrier wave wavelength, and filters and transmits the radio frequency signal with the cable television service carrier wave wavelength to the coupler; the receiving coupler separates out the cable television reverse data signal and returns the cable television reverse data signal to the cable television optical fiber transceiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311063182.2A CN116980572A (en) | 2023-08-23 | 2023-08-23 | Device for transmitting 5G signal in cable television network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311063182.2A CN116980572A (en) | 2023-08-23 | 2023-08-23 | Device for transmitting 5G signal in cable television network |
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| Publication Number | Publication Date |
|---|---|
| CN116980572A true CN116980572A (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311063182.2A Pending CN116980572A (en) | 2023-08-23 | 2023-08-23 | Device for transmitting 5G signal in cable television network |
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| Country | Link |
|---|---|
| CN (1) | CN116980572A (en) |
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2023
- 2023-08-23 CN CN202311063182.2A patent/CN116980572A/en active Pending
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