CN108234300B - CATV+PON+EoC technology home gateway and implementation method thereof - Google Patents
CATV+PON+EoC technology home gateway and implementation method thereof Download PDFInfo
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- CN108234300B CN108234300B CN201810159998.8A CN201810159998A CN108234300B CN 108234300 B CN108234300 B CN 108234300B CN 201810159998 A CN201810159998 A CN 201810159998A CN 108234300 B CN108234300 B CN 108234300B
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- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 14
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/106—Adaptations for transmission by electrical cable for domestic distribution
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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
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- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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Abstract
The invention discloses a CATV+PON+EoC technology home gateway and an implementation method thereof, wherein the home gateway comprises a PON optical port, a radio frequency port, a CATV optical port, a PON circuit, an EoC circuit, a CATV circuit, a duplex circuit and a power supply circuit; the PON optical port is connected with the user optical fiber and used for accessing/outputting broadband service, the PON optical port is connected with a PON circuit to realize bidirectional transmission, the PON circuit is connected with an EoC circuit to realize bidirectional transmission, and the EoC circuit is connected with a duplex circuit to realize bidirectional transmission. The CATV optical port is connected with the user optical fiber for accessing the broadcast television service, the CATV optical port is connected with the CATV circuit, the CATV circuit is connected with the duplex circuit, and the duplex circuit is connected with the radio frequency port to realize bidirectional transmission. The radio frequency port is connected with a household coaxial cable. The invention saves the installation cost of network upgrading without re-laying network cables, and can meet the requirement of using only one home network.
Description
Technical Field
The invention belongs to the technical field of home gateways, and particularly relates to a home gateway of CATV+PON+EoC technology and an implementation method thereof.
Background
The existing optical fiber home-entry of the broadcast television FTTH mainly uses a CATV+PON+LAN scheme, which is also called an RF hybrid technical scheme. The scheme is a fiber to the home technical scheme based on radio frequency broadcasting technology and PON technology. The broadband access service adopts PON technology, and the broadcast television service adopts radio frequency broadcast technology.
As shown in fig. 1. The broadcast television service of the scheme is converted into radio frequency signals through the CATV optical receiver and transmitted in the coaxial cable of the home. PON technologies used in the above schemes include EPON and GPON technologies. LAN technologies are used and typically include ten megabyte (10 BASE-T), hundred megabyte (100 BASE-TX) and gigabit (1000 BASE-T) local area network technologies of the IEEE 802.3 standard.
The catv+pon+lan scheme has mainly the following drawbacks:
1. the scheme is suitable for laying network cables (such as five types of wires) in families, and uses the network cables to cover broadband access services in the families, but the traditional families in China do not lay the network cables, and the wiring cost of networking is required to be increased additionally.
2. The scheme needs a PON gateway device and a CATV optical receiver to realize broadband access service and broadcast television service, the broadcast television service uses coaxial cables as transmission media, the broadband access service uses network cables as transmission media, two cables are required to be laid in a household, and construction is complex and cost is increased.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention aims to provide a catv+pon+eoc technology home gateway and a method for implementing the same. The invention is applied to the transformation of the broadcast and television FTTH old network, so that the home using the traditional HFC (Hybrid Fiber Coaxial, hybrid fiber coaxial cable) network can realize the broadcast television service of the fiber to the home and the broadband access service with large bandwidth without the transformation of the original coaxial cable wiring of the home.
The technical scheme adopted by the invention is as follows:
a home gateway of CATV+PON+EoC technology comprises a PON optical port, a radio frequency port, a CATV optical port, a PON circuit, an EoC circuit, a CATV circuit, a duplex circuit and a power supply circuit; the power supply circuit supplies power to the PON optical port, the radio frequency port, the CATV optical port, the PON circuit, the EoC circuit, the CATV circuit and the duplex circuit; one end of the PON optical port is connected with a user optical fiber for accessing/outputting broadband service; the PON circuit is used for converting a broadband service downlink optical signal input from a PON optical port into a baseband electric signal and then transmitting the baseband electric signal to the EoC circuit, and simultaneously converting a broadband service uplink baseband electric signal transmitted by the EoC circuit into an optical signal and then outputting the optical signal from the PON optical port; the EoC circuit is used for converting the broadband service downlink baseband electric signal transmitted from the PON circuit into an EoC radio frequency signal and transmitting the EoC radio frequency signal to the duplex circuit; meanwhile, the system is used for converting the broadband service uplink EoC radio frequency signal input by the duplex circuit into a baseband electric signal and then transmitting the baseband electric signal to the PON circuit; the input end of the CATV optical port is accessed into a user optical fiber for accessing broadcast television service; the CATV circuit is used for converting the broadcast television service optical signals input from the CATV optical port into CATV radio frequency signals and transmitting the CATV radio frequency signals to the duplex circuit; the duplex circuit is used for transmitting the EoC radio frequency signal transmitted from the EoC circuit to the radio frequency port and then outputting the EoC radio frequency signal, and is also used for transmitting the EoC radio frequency signal input from the radio frequency port to the EoC circuit; and for transmitting CATV radio frequency signals transmitted from the CATV circuit to the radio frequency port and then outputting; the radio frequency port is connected with a household coaxial cable.
Because the CATV radio frequency signal and the EoC radio frequency signal work in different frequency bands, the duplex circuit mainly divides and combines the radio frequency signals of the two different frequency bands, and the invention utilizes the characteristic that the two service use frequency bands of the broadcast television service and the broadband service are not overlapped to transmit the two service signals on the same coaxial cable, and the two service signals cannot interfere with each other.
Specifically, the home gateway comprises a main control circuit which is connected with the PON circuit and the EoC circuit simultaneously, the main control circuit comprises a main control chip U4 and hardware peripherals, and the main control chip U4 comprises at least one network port.
Preferably, the main control chip U4 adopts RTL9606LQFP-216EPAD.
Preferably, the hardware peripheral of the main control circuit comprises a storage module, a configuration module and a network port module. The memory module comprises a memory strip U5 and a FLASH memory NU1, and the configuration module comprises a plurality of pull-up/pull-down configuration resistors.
Further, the PON circuit comprises a PON chip U3 for processing photoelectric conversion, the PON optical port is connected with the PON chip U3 to transmit an optical signal, and the PON chip U3 is connected with the EoC circuit to transmit a baseband electrical signal; the PON chip U3 is also connected with a main control chip U4 of the main control circuit and used for transmitting differential signals.
Further, the network port module comprises an ethernet transceiver chip HU4, the ethernet transceiver chip HU4 is connected with a network port of a main control chip U4 of the main control circuit, and communication between the ethernet transceiver chip HU4 and the main control chip U4 of the main control circuit is realized through the network port; the Ethernet transceiver chip HU4 is further connected with the EoC circuit to realize communication with the EoC circuit, so that the EoC circuit can communicate with the main control chip U4 of the main control circuit through the Ethernet transceiver chip HU 4.
Still further, the EoC circuit includes EoC chip HU5 and the interface HCN1 that is connected with EoC chip HU5, eoC chip HU5 adopts MSE510ce_ep-LQFP128, eoC chip HU5 is connected with PON circuit and is transmitted baseband signal, the RGMII of EoC chip HU5 converts the ethernet transceiver chip HU4 in the net gape module into net gape and connects master control chip U4 of master control circuit and realize the communication, eoC chip HU5 passes through interface HCN1 and exports EoC radio frequency signal to duplex circuit.
In addition, the CATV circuit includes a CATV chip U1, the CATV chip U1 being connected to the CATV optical port for inputting optical signals, the CATV chip U1 outputting CATV radio frequency signals to the duplex circuit.
A method for realizing a home gateway of CATV+PON+EoC technology comprises the realization of broadband access service and the realization of broadcast television service.
The implementation process of the broadband access service comprises the following steps:
downstream communication
A1, transmitting a broadband service downlink optical signal input from a PON optical port to a PON circuit, converting the downlink optical signal into a downlink baseband electric signal, and transmitting the downlink baseband electric signal to an EoC circuit;
a2, the EoC circuit converts the downlink baseband signal into an EoC radio frequency signal and transmits the EoC radio frequency signal to the duplex circuit;
a3, the duplex circuit transmits the EoC radio frequency signal to the radio frequency port and then outputs the EoC radio frequency signal;
uplink communication
B1, transmitting an uplink EoC radio frequency signal input from a radio frequency port to an EoC circuit;
the B2 and EoC circuits convert the uplink EoC radio frequency signals into uplink baseband signals and then transmit the uplink baseband signals to the PON circuits;
b3, the PON circuit converts the uplink baseband signal into an optical signal and outputs the optical signal from the PON optical port.
The implementation process of the broadcast television service comprises the following steps:
c1, the optical signal of the broadcast television service input from the CATV optical port is transmitted to the CATV circuit to be converted into CATV radio frequency signal and then transmitted to the duplex circuit;
c2, the duplex circuit transmits CATV radio frequency signals to the radio frequency port and then outputs the CATV radio frequency signals;
specifically, the radio frequency range of the EoC radio frequency signal is 7.5MHz to 67.5MHz; the CATV radio frequency signal has a frequency range of 87MHz to 1GHz.
The beneficial effects of the invention are as follows:
the invention uses the coaxial cable in the family as the network coverage, so that the network cable does not need to be paved again when the family performs the network upgrading of the optical fiber home, and the installation cost of the network upgrading is saved. The method is particularly suitable for the traditional houses where coaxial cables are laid.
The invention realizes two services of broadcast television service and broadband service simultaneously, and can meet the requirement of use only by one home network, which is different from the prior use scheme of adding a CATV optical receiver to a PON gateway device, so that the home networking is simpler and more convenient.
Drawings
Fig. 1 is a network topology diagram of a conventional catv+pon+lan technology.
Fig. 2 is a network topology of the present invention.
Fig. 3 is a schematic circuit diagram of the master circuit of the present invention.
Fig. 4 is a schematic circuit diagram of a memory module according to the present invention.
Fig. 5 is a schematic circuit diagram of the inventive configuration module.
Fig. 6 is a schematic circuit diagram of the PON circuit of the present invention.
Fig. 7 is a schematic circuit diagram of the port module according to the present invention.
Fig. 8 is a schematic circuit diagram of an EoC circuit of the present invention.
Fig. 9 is a schematic circuit diagram of the present invention-duplex circuit.
Fig. 10 is a schematic circuit diagram of the CATV circuit of the present invention.
Fig. 11 is a schematic circuit diagram of the back plate of the present invention.
Detailed Description
The invention is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.
Example 1:
the present embodiment provides a home gateway of catv+pon+eoc technology, which is suitable for a situation in which coaxial cables have been laid inside a home, such as a conventional HFC network. The method is suitable for the coaxial cable to carry out broadband service coverage in the home. At the same time broadcast television services also use the same transmission medium (coaxial cable). The broadcasting television service of the optical fiber home and the broadband access service with large bandwidth can be realized without modifying the existing coaxial network of the home.
A home gateway of CATV+PON+EoC technology comprises a PON optical port, a radio frequency port, a CATV optical port, a PON circuit, an EoC circuit, a CATV circuit, a duplex circuit and a power supply circuit.
One end of the PON optical port is connected with the user optical fiber for accessing/outputting broadband service, the other end of the PON optical port is connected with one end of the PON circuit to realize bidirectional transmission, the other end of the PON circuit is connected with one end of the EoC circuit to realize bidirectional transmission, and the other end of the EoC circuit is connected with the duplex circuit to realize bidirectional transmission.
PON circuit: the broadband service downlink optical signal input from the PON optical port is converted into a baseband electric signal and then transmitted to the EoC circuit; meanwhile, the broadband service uplink baseband electric signal transmitted by the EoC circuit is converted into an optical signal and then output from a PON optical port.
EoC circuit: the system is responsible for converting a broadband service downlink baseband electric signal transmitted from the PON circuit into an EoC radio frequency signal and transmitting the EoC radio frequency signal to the duplex circuit; meanwhile, the broadband service uplink EoC radio frequency signals input by the duplex circuit are converted into baseband electric signals and then transmitted to the PON circuit.
The input end of the CATV optical port is connected with the user optical fiber for accessing the broadcast television service, the output end of the CATV optical port is connected with the input end of the CATV circuit, and the output end of the CATV circuit is connected with the duplex circuit. The duplex circuit is connected with the radio frequency port to realize bidirectional transmission.
CATV circuit: is responsible for converting the broadcast television service optical signals input from the CATV optical ports into CATV radio frequency signals and then transmitting to the duplex circuit. The CATV circuit corresponds to a CATV optical receiver.
Duplex circuit: responsible for transmitting EoC radio frequency signals transmitted from EoC circuit to radio frequency port and then outputting, meanwhile responsible for transmitting EoC radio frequency signals input from radio frequency port to EoC circuit; and is responsible for transmitting CATV radio frequency signals transmitted from the CATV circuit to the radio frequency ports and then outputting.
A power supply circuit: is responsible for providing direct current power to each circuit.
Because the CATV radio frequency signal and the EoC radio frequency signal work in different frequency bands, the duplex circuit mainly divides and combines the radio frequency signals of the two different frequency bands, and the invention utilizes the characteristic that the two service use frequency bands of the broadcast television service and the broadband service are not overlapped to transmit the two service signals on the same coaxial cable, and the two service signals cannot interfere with each other.
As shown in fig. 2, fig. 2 is a network topology diagram of the present invention. The numbers in the arrows in the figures represent respectively:
1. broadband service upstream and downstream optical signals (bi-directional).
2. Broadband service uplink and downlink baseband electrical signals (bi-directional).
3. Broadband service uplink and downlink EoC radio frequency signals (bi-directional).
4. Broadcast television service optical signals (unidirectional).
5. The broadcast television service CATV radio frequency signal (unidirectional).
6. A hybrid of broadband service upstream and downstream EoC radio frequency signals (bi-directional) and broadcast television service CATV radio frequency signals (uni-directional).
In this embodiment, the PON optical port is an optical fiber receptacle of an SC/UPC or SC/PC.
In this embodiment, the rf port is a common interface of a coaxial cable, and is classified as national standard or english.
In this embodiment, the CATV optical port is an SC/APC fiber optic receptacle.
In this embodiment, the baseband signal is an unmodulated signal, such as 1000BASE-T, MII.
In this embodiment, the EoC radio frequency signal is a signal in the coaxial cable in accordance with the EoC standard, and the radio frequency range is 7.5MHz to 67.5MHz. For carrying broadband traffic.
In this embodiment, the CATV radio frequency signal is a signal transmitted on a coaxial cable in accordance with the national broadcast television standard, and the frequency range is 87MHz to 1GHz.
The home gateway of CATV+PON+EoC technology also comprises a master control circuit which is connected with the PON circuit and the EoC circuit simultaneously, as shown in figure 3, and figure 3 is a circuit schematic diagram of the master control circuit.
The main control circuit comprises a main control chip U4 and hardware peripherals, wherein the main control chip U4 adopts RTL9606LQFP-216EPAD. The main control chip U4 comprises four network ports P0, P1, P2 and P4.
The hardware peripheral comprises a storage module (shown in fig. 4), a configuration module (shown in fig. 5) and a portal module (shown in fig. 7). The memory module comprises a memory bank U5 and a FLASH memory NU1. Fig. 4 is a schematic circuit diagram of a memory module according to the present invention. Fig. 5 is a schematic circuit diagram of the inventive configuration module.
As shown in fig. 6, fig. 6 is a schematic circuit diagram of the PON circuit of the present invention. The PON circuit includes a PON chip U3, the PON chip U3 employs CN25L95, and the PON chip U3 is used for processing photoelectric conversion. In the figure, the interface J3 is a PON optical port, including a ROSA optical port and a TOSA optical port, where the ROSA optical port is used for receiving an optical signal sent by the PON chip U3, the TOSA is used for sending the optical signal to the PON chip U3, and pins 6 and 9 of the interface J3 are connected with pins 18 and 19 of the PON chip U3 to transmit the optical signal. The 2 and 3 pins of the PON chip U3 are connected with the main control chip U4 of the main control circuit to transmit differential signals, and the 10 and 11 pins of the PON chip U3 are connected with the main control chip U4 of the main control circuit to transmit differential signals.
Fig. 7, fig. 7 is a schematic circuit diagram of the port module according to the present invention. The network port module comprises an Ethernet transceiver chip HU4, the chip HU4 adopts RTL8211F, pins 1, 2 and 4-10 of the chip HU4 are connected with a third network port P3 of a main control chip U4 of the main control circuit, and the chip HU4 is communicated with the main control chip U4 of the main control circuit through the network port. The pins 15, 16-27 of the chip HU4 are connected with the EoC chip to realize communication with the EoC circuit, so that the EoC chip can communicate with the main control chip U4 of the main control circuit through the chip HU 4.
The network port module further comprises a network port J6, the network port J6 comprises a LAN1 and a LAN2, and the network port J6 is connected with a first network port P1 and a second network port P2 of a main control chip U4 of the main control circuit. The network port J6 can be selected according to actual conditions.
As shown in fig. 8, fig. 8 is a schematic circuit diagram of the EoC circuit of the present invention. The EoC circuit comprises an EoC chip HU5, the chip HU5 adopts MSE510CE_EP-LQFP128, and RGMII of the chip HU5 is converted into a master control chip U4 of which the network port is connected with the master control circuit through an Ethernet transceiver chip HU4 in the network port module to realize communication.
As shown in fig. 9, fig. 9 is a schematic circuit diagram of the duplex circuit of the present invention. The duplex circuit includes a duplexer U8. The diplexer U8 employs FD-40BX 65/87. The 1 pin of the duplexer U8 is a high-frequency input port for inputting CATV radio frequency signals, the 3 pin is a low-frequency input/output port for inputting/outputting EoC radio frequency signals, the 2 pin is an input/output port for inputting/outputting EoC radio frequency signals of different frequency bands from the radio frequency port to the radio frequency port and outputting CATV radio frequency signals to the radio frequency port.
The EoC circuit further comprises an interface HCN1 connected to the EoC chip HU 5.
The duplex circuit further includes an interface J2, an interface J3, an interface J15, an interface J16, and an interface J17.
EoC radio frequency signals are output from an EoC chip HU5 in an EoC circuit to an interface HCN1 (MMCX), then output to an interface J3 and an interface J4 of a backboard, the EoC radio frequency signals are transmitted to the interface J3 in a duplex circuit through the interface J4, the interface J3 is connected with a3 pin of a duplexer U8, and the process realizes the input/output of the EoC radio frequency signals.
As shown in fig. 10, fig. 10 is a schematic circuit diagram of the CATV circuit of the present invention. The CATV circuit includes a CATV chip U1, the chip U1 employing RT930, pins 17 and 18 of the chip U1 outputting CATV radio frequency signals to pin 1 of the diplexer U8. In the figure, the J1 interface is a CATV optical port, and the J1 interface is directly connected to the CATV chip U1.
As shown in fig. 11, fig. 11 is a schematic circuit diagram of the back plate of the present invention. The backboard comprises an interface J1, an interface J2, an interface J3, an interface J4 and an LED module. The interface J1 of the backboard is connected with the interface J15 in the duplex circuit, and the interface J2 of the backboard is connected with the power circuit with the interface J15 in the duplex circuit.
A method for realizing a home gateway of CATV+PON+EoC technology comprises the following steps: including implementation of broadband access services and implementation of broadcast television services.
The implementation process of the broadband access service comprises the following steps:
downstream communication
A1, transmitting a broadband service downlink optical signal input from a PON optical port to a PON circuit, converting the downlink optical signal into a downlink baseband electric signal, and transmitting the downlink baseband electric signal to an EoC circuit;
a2, the EoC circuit converts the downlink baseband signal into an EoC radio frequency signal and transmits the EoC radio frequency signal to the duplex circuit;
a3, the duplex circuit transmits the EoC radio frequency signal to the radio frequency port and then outputs the EoC radio frequency signal;
uplink communication
B1, transmitting an uplink EoC radio frequency signal input from a radio frequency port to an EoC circuit;
the B2 and EoC circuits convert the uplink EoC radio frequency signals into uplink baseband signals and then transmit the uplink baseband signals to the PON circuits;
b3, the PON circuit converts the uplink baseband signal into an optical signal and outputs the optical signal from the PON optical port.
The implementation process of the broadcast television service comprises the following steps:
c1, the optical signal of the broadcast television service input from the CATV optical port is transmitted to the CATV circuit to be converted into the CATV radio frequency signal and then transmitted to the duplex circuit.
The invention is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.
Claims (9)
1. A home gateway for catv+pon+eoc technology, characterized in that: the system comprises a PON optical port, a radio frequency port, a CATV optical port, a PON circuit, an EoC circuit, a CATV circuit, a duplex circuit and a power supply circuit;
the power supply circuit supplies power to the PON optical port, the radio frequency port, the CATV optical port, the PON circuit, the EoC circuit, the CATV circuit and the duplex circuit;
one end of the PON optical port is connected with a user optical fiber for accessing/outputting broadband service; the PON circuit is used for converting a broadband service downlink optical signal input from a PON optical port into a baseband electric signal and then transmitting the baseband electric signal to the EoC circuit, and simultaneously converting a broadband service uplink baseband electric signal transmitted by the EoC circuit into an optical signal and then outputting the optical signal from the PON optical port;
the EoC circuit is used for converting the broadband service downlink baseband electric signal transmitted from the PON circuit into an EoC radio frequency signal and transmitting the EoC radio frequency signal to the duplex circuit; meanwhile, the system is used for converting the broadband service uplink EoC radio frequency signal input by the duplex circuit into a baseband electric signal and then transmitting the baseband electric signal to the PON circuit;
the input end of the CATV optical port is accessed into a user optical fiber for accessing broadcast television service; the CATV circuit is used for converting the broadcast television service optical signals input from the CATV optical port into CATV radio frequency signals and transmitting the CATV radio frequency signals to the duplex circuit;
the duplex circuit is used for transmitting the EoC radio frequency signal transmitted from the EoC circuit to the radio frequency port and then outputting the EoC radio frequency signal, and is also used for transmitting the EoC radio frequency signal input from the radio frequency port to the EoC circuit; and for transmitting CATV radio frequency signals transmitted from the CATV circuit to the radio frequency port and then outputting;
the radio frequency port is connected with a household coaxial cable.
2. The home gateway of catv+pon+eoc technology according to claim 1, wherein: the home gateway comprises a main control circuit which is connected with the PON circuit and the EoC circuit simultaneously, the main control circuit comprises a main control chip U4 and hardware peripherals, and the main control chip U4 comprises at least one network port.
3. The home gateway of catv+pon+eoc technology according to claim 2, wherein: the hardware peripheral of the main control circuit comprises a storage module, a configuration module and a network port module.
4. The home gateway of catv+pon+eoc technology according to claim 2, wherein: the PON circuit comprises a PON chip U3 for processing photoelectric conversion, wherein a PON optical port is connected with the PON chip U3 to transmit optical signals, and the PON chip U3 is connected with the EoC circuit to transmit baseband electric signals; the PON chip U3 is also connected with a main control chip U4 of the main control circuit and used for transmitting differential signals.
5. A catv+pon+eoc technology home gateway according to claim 3, wherein: the network port module comprises an Ethernet transceiver chip HU4, the Ethernet transceiver chip HU4 is connected with a network port of a main control chip U4 of the main control circuit, and communication between the Ethernet transceiver chip HU4 and the main control chip U4 of the main control circuit is realized through the network port;
the Ethernet transceiver chip HU4 is further connected with the EoC circuit to realize communication with the EoC circuit, so that the EoC circuit can communicate with the main control chip U4 of the main control circuit through the Ethernet transceiver chip HU 4.
6. The home gateway of catv+pon+eoc technology according to claim 5, wherein: the EoC circuit comprises an EoC chip HU5 and an interface HCN1 connected with the EoC chip HU5, the EoC chip HU5 adopts MSE510CE_EP-LQFP128, the EoC chip HU5 is connected with the PON circuit to transmit baseband electric signals, RGMII of the EoC chip HU5 is converted into a master control chip U4 of which a network port is connected with the master control circuit through an Ethernet transceiver chip HU4 in the network port module to realize communication, and the EoC chip HU5 outputs EoC radio frequency signals to the duplex circuit through the interface HCN1.
7. The home gateway of catv+pon+eoc technology according to claim 1, wherein: the CATV circuit comprises a CATV chip U1, wherein the CATV chip U1 is connected with a CATV optical port for inputting optical signals, and the CATV chip U1 outputs CATV radio frequency signals to a duplex circuit.
8. The method for implementing a catv+pon+eoc technology home gateway according to any one of claims 1-7, wherein: the method comprises the realization of broadband access service and the realization of broadcast television service;
the implementation process of the broadband access service comprises the following steps:
downstream communication
A1, transmitting a broadband service downlink optical signal input from a PON optical port to a PON circuit, converting the downlink optical signal into a downlink baseband electric signal, and transmitting the downlink baseband electric signal to an EoC circuit;
a2, the EoC circuit converts the downlink baseband signal into an EoC radio frequency signal and transmits the EoC radio frequency signal to the duplex circuit;
a3, the duplex circuit transmits the EoC radio frequency signal to the radio frequency port and then outputs the EoC radio frequency signal;
uplink communication
B1, transmitting an uplink EoC radio frequency signal input from a radio frequency port to an EoC circuit;
the B2 and EoC circuits convert the uplink EoC radio frequency signals into uplink baseband signals and then transmit the uplink baseband signals to the PON circuits;
b3, the PON circuit converts the uplink baseband electric signal into an optical signal and outputs the optical signal from a PON optical port;
implementation of broadcast television services
C1, the optical signal of the broadcast television service input from the CATV optical port is transmitted to the CATV circuit to be converted into CATV radio frequency signal and then transmitted to the duplex circuit;
c2, duplex circuit transmits CATV radio frequency signal to radio frequency port and then outputs.
9. The method for implementing the home gateway of catv+pon+eoc technology according to claim 8, wherein: the radio frequency range of the EoC radio frequency signal is 7.5MHz to 67.5MHz;
the CATV radio frequency signal has a frequency range of 87MHz to 1GHz.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799223A (en) * | 2003-11-05 | 2006-07-05 | 华为技术有限公司 | Broadband access system and access method implemented on cable TV network |
| CN203352614U (en) * | 2013-07-10 | 2013-12-18 | 中国联合网络通信集团有限公司 | Household gateway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799223A (en) * | 2003-11-05 | 2006-07-05 | 华为技术有限公司 | Broadband access system and access method implemented on cable TV network |
| CN203352614U (en) * | 2013-07-10 | 2013-12-18 | 中国联合网络通信集团有限公司 | Household gateway |
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