CN107888290B - GPON signal aggregation remote equipment and aggregation remote method thereof - Google Patents
GPON signal aggregation remote equipment and aggregation remote method thereof Download PDFInfo
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- CN107888290B CN107888290B CN201711237746.4A CN201711237746A CN107888290B CN 107888290 B CN107888290 B CN 107888290B CN 201711237746 A CN201711237746 A CN 201711237746A CN 107888290 B CN107888290 B CN 107888290B
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- 238000004220 aggregation Methods 0.000 title claims abstract description 20
- 230000002776 aggregation Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 236
- 239000013307 optical fiber Substances 0.000 claims abstract description 32
- 238000013507 mapping Methods 0.000 claims description 15
- 101100341026 Caenorhabditis elegans inx-2 gene Proteins 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 6
- 101100462419 Homo sapiens OTUB2 gene Proteins 0.000 claims 2
- 101150046103 OTU2 gene Proteins 0.000 claims 2
- 102100025914 Ubiquitin thioesterase OTUB2 Human genes 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000010076 replication Effects 0.000 description 1
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Classifications
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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
- H04B10/25891—Transmission components
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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
- H04B10/27—Arrangements for networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0003—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0071—Provisions for the electrical-optical layer interface
Abstract
The invention discloses a GPON signal aggregation a remote device and a method for aggregate remote thereof. For convenient maintenance, the optical line terminals are often placed in a centralized manner in an operator room. This can lead to severe attenuation during GPON optical signal transmission. The invention discloses GPON signal aggregation remote equipment which comprises local side equipment and remote side equipment. The local side equipment and the remote side equipment comprise a power supply system, a management module, a storage module, an optical interface module, a service module, a clock module and a fan. When the remote equipment is only one, the optical fiber interface of the first optical module in the local equipment is connected with the optical fiber interface of the first optical module of the remote equipment. When the number of the far-end devices is n, the optical fiber interface of the first optical module in the local side device is connected with the input port of the wavelength division multiplexer. The n output ports of the wavelength division multiplexer are respectively connected with n far-end devices. Under the condition that the optical line terminals are arranged in a centralized way, the transmission distance of GPON optical signals is greatly increased.
Description
Technical Field
The invention belongs to the technical field of Ethernet passive optical networks, and particularly relates to GPON signal aggregation remote equipment and an aggregation remote method thereof.
Background
GPON (Gigabit Passive Optical Network: gigabit Passive optical network) is a point-to-multipoint access technology and plays a very important role in the construction of the last kilometer due to its low cost, ease of maintenance and other factors. But also limits the wide-range laying and use due to the short transmission distance, small coverage area and the like.
In the current remote transmission layout of GPON optical signals in the market, there are mainly the following two modes: 1. the optical line terminals (OLT, optical Line Termination) are sunk and distributed to each small-sized subscriber's premises. The optical line terminals in this way are more distributed, resulting in inconvenient maintenance of the equipment and higher costs. 2. And the optical line terminals are intensively placed in an operator room. This approach attenuates more when the optical line terminal transmits a GPON optical signal to the optical network unit (ONU, optical Network Unit). Therefore, it is important to design a GPON signal aggregation remote device capable of centrally arranging optical line terminals at operators without serious loss of optical signals.
Disclosure of Invention
The invention aims to provide GPON signal aggregation remote equipment and an aggregation remote method thereof.
The invention comprises local side equipment and remote side equipment. The local side equipment and the remote side equipment comprise a power supply system, a management module, a storage module, an optical interface module, a service module, a clock module and a fan. The power supply system supplies power to the management module, the storage module, the optical interface module, the service module and the clock module. The clock module comprises a clock chip. And an input clock pin and an output clock pin of the clock chip are respectively connected with two GPIO interfaces of the service module.
The management module comprises a first processor and a second processor. The memory module comprises a first memory chip and a second memory chip. A first processor the second processor and the service module are communicated with each other through a serial peripheral interface bus. The second processor communicates with the first memory chip via a serial peripheral interface bus. The first processor communicates with the second memory chip via an internal integrated circuit bus. The first GPIO interface of the second processor is connected with the rotating speed output port of the fan. The second GPIO interface of the second processor is coupled to the speed control input of the fan.
The optical interface module comprises a first optical module and four second optical modules. The business module communicates with the first optical module and the four second optical modules through the internal integrated circuit bus. In the local side equipment, the five GTX interfaces of the service module are respectively connected with the electric signal output ports of the first optical module and the electric signal input ports of the four second optical modules. In the remote equipment, five GTX interfaces of the service module are respectively connected with an electric signal input port of a first optical module and electric signal output ports of four second optical modules.
When the remote equipment is only one, the optical fiber interface of the first optical module in the local equipment is connected with the optical fiber interface of the first optical module of the remote equipment. When the number of the far-end devices is n, n is more than or equal to 2, and the optical fiber interface of the first optical module in the local side device is connected with the input port of the wavelength division multiplexer. The n output ports of the wavelength division multiplexer are respectively connected with the optical fiber interfaces of the first optical modules of the n far-end devices.
Further, the local side equipment is arranged at an operator. The optical fiber interfaces of the four second optical modules in the local side equipment are respectively connected with four output optical fibers. The four output optical fibers are connected with the optical line terminal. The remote equipment is arranged in an optical cable cross-connecting box or a machine room at the user side. The optical fiber interfaces of the four second optical modules in the remote equipment are respectively connected with the input ports of the four optical splitters. The output ports of the four optical splitters are connected with a plurality of optical network units.
Further, the first memory chip is a W25Q128FVSG chip manufactured by Winbond corporation. The second memory chip adopts an AT24C16 chip manufactured by ATMEL company.
Further, the model of the first optical module is ZB7784099-DCL. The model of the second optical module in the local side equipment is ZP5342034-KCST. The model of the second optical module in the remote equipment is ZP5432043-JCS.
Further, the clock module also comprises a crystal oscillator. The crystal oscillator is connected with the clock chip. The clock chip adopts an 8T49N488A chip manufactured by IDT company.
Further, the service module adopts a service chip with the model XC7K325T manufactured by Xilinx company.
Further, the first processor adopts a singlechip with the model number of STM32F 107. The second processor adopts an EP4CE6 chip manufactured by Altera company.
Further, the power supply system comprises a switch power supply module and a power supply chip. And the 3.3V voltage output end of the switching power supply module is connected with the first processor, the second processor and the 3.3V power supply interface of the service module. The 1.0V voltage output end of the switching power supply module is connected with the 1.0V power supply end of the service module. And a 2.5V voltage output end of the power supply chip is connected with the clock chip, the second processor and a 2.5V power supply end of the service module. The 1.8V voltage output end of the power supply chip is connected with the 1.8V power supply end of the service module. The 1.2V voltage output end of the power supply chip is connected with the 1.2V power supply end of the second processor and the service module. The 1.0V voltage output end of the power supply chip is connected with the 1.0V power supply end of the service module. The switch power supply module and the power supply chip are communicated with the second processor through the internal integrated circuit bus.
Further, the switching power supply module adopts a non-isolated switching power supply module with the model number of NAD12S10-A manufactured by Hua technology Co. The power chip is a power chip of model MP1484EN manufactured by core systems limited.
The aggregate zoom-out method of the GPON signal aggregate zoom-out equipment specifically comprises the following steps:
step one: the four second optical modules in the local side equipment convert four input GPON optical signals into four first electric signals and transmit the four first electric signals to the service module. The service module extracts first clock signals from the four first electric signals respectively and transmits the first clock signals to the clock chip. The clock chip de-jitters the received four first clock signals and transmits the de-jittered four first clock signals to the service module. The service module integrates the four first electric signals and the four received first clock signals respectively.
Step two: and the service module of the local side equipment encapsulates the four paths of first electric signals into one path of second electric signals.
1. And (3) mapping the four first electric signals obtained in the step (I) into four first OPU1 signals respectively in a fixed bit rate mode.
2. According to the G.709 protocol issued by the telecommunication standards office of the International telecommunication Union, overhead bytes are added to the four first OPU1 signals respectively to obtain four first ODU1 signals.
3. According to the g.709 protocol issued by the international telecommunication union telecommunication standard office, the four first ODU1 signals are mapped into four first ODTU12 signals, respectively.
4. The four first ODTU12 signals are multiplexed into one first ODTUG2 signal according to the g.709 protocol issued by the international telecommunication union telecommunication standardization sector.
5. According to the g.709 protocol promulgated by the international telecommunications union telecommunication standard office, the first ODTUG2 signal is mapped to a first OPU2 signal. And mapping the first OPU2 signal to a first ODU2 signal. The first ODU2 signal is then mapped to a first OTU2 signal. The first OTU2 signal acts as a second electrical signal. The service module transmits the second electrical signal to the first optical module.
Step three: the first optical module in the local side equipment converts the received second electric signal into an OTN optical signal. If the remote equipment is only one, the first optical module in the local equipment transmits the OTN optical signal to the first optical module in the remote equipment. If the number of the far-end devices is n, the first optical module in the local side device transmits the OTN optical signals to the wavelength division multiplexer. The wavelength division multiplexer copies the received OTN optical signals into n pieces respectively to a first optical module within the n remote devices.
And step four, the first optical module in the remote equipment converts the received OTN optical signal into a third electrical signal and transmits the third electrical signal to the service module. A service module in the remote device extracts the second clock signal from the third electrical signal and transmits the second clock signal to the clock chip. The clock chip de-jitters the received second clock signal and transmits the de-jittered second clock signal to the service module. The service module integrates the third electrical signal with the received clock signal.
And fifthly, splitting one path of third electric signals into four paths of fourth electric signals by the service module of the remote equipment.
1. And mapping the third electric signal obtained in the step four into a second ODU2 signal according to a G.709 protocol issued by an International telecommunication Union telecommunication Standard substation. And mapping the second ODU2 signal to a second OPU2 signal. The second OPU2 signal is then mapped to a second ODTUG2 signal.
2. The second ODTUG2 signal is split into four second ODTU12 signals according to the g.709 protocol published by the international telecommunication union telecommunication standard office.
3. The four second ODTU12 signals are mapped into four second ODU1 signals, respectively, according to the g.709 protocol issued by the international telecommunication union telecommunication standard office.
4. According to the g.709 protocol published by the international telecommunication union telecommunication standardization sector, overhead bytes within the four second ODU1 signals are removed, resulting in four second OPU1 signals.
5. The four second OPU1 signals are mapped into four fourth electrical signals, respectively, at a fixed bit rate. The service module transmits four fourth electrical signals to the four second optical modules respectively.
And step six, converting four fourth electrical signals into four output GPON optical signals respectively by four second optical modules in the remote equipment and outputting the four output GPON optical signals.
The invention has the beneficial effects that:
1. under the condition that the optical line terminals are arranged in a centralized way, the transmission distance of GPON optical signals is greatly increased.
2. The invention can aggregate four GPON optical signals into one OTN optical signal, greatly reduces the number of optical fibers required by optical signal transmission and reduces the transmission cost while improving the transmission distance of the optical signals.
3. The invention can be a local side device corresponding to a plurality of remote side devices through the signal replication of the wavelength division multiplexer, further increases the coverage range of the invention and enhances the practicability.
Drawings
FIG. 1 is a system block diagram of a local or remote device according to the present invention;
FIG. 2 is a block diagram showing the connection between a management module and the outside in the present invention;
FIG. 3 is a power block diagram of a power supply system according to the present invention;
FIG. 4 shows the present invention Medium light interface module a connection block diagram with the service module;
FIG. 5 is a system block diagram of embodiment 1 of the present invention;
fig. 6 is a system block diagram of embodiment 2 of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, a GPON signal aggregation remote device includes a local device and a remote device. The local side equipment and the remote side equipment comprise a power supply system 1, a management module 2, a storage module 3 an optical interface module 4, a service module 5, a clock module 6 and a fan 7. The memory module 3 includes a first memory chip 3-1 and a second memory chip 3-2. The first memory chip 3-1 is a W25Q128FVSG chip manufactured by Winbond corporation. The second memory chip 3-2 is an AT24C16 chip manufactured by ATMEL company. The optical interface module 4 comprises a first optical module 4-1 and four second light modules 4-2. The first optical module and the second optical module are optical transceiver integrated modules with SFP packaging forms. The first optical module 4-1 adopts an OTN 10G optical module, and the model is ZB7784099-DCL. The second optical module in the local side equipment adopts a GPON ONU optical module, and the model is ZP5342034-KCST. The second optical module in the remote equipment adopts a GPON OLT optical module, and the model is ZP5432043-JCS. The service module 5 adopts a service chip with the model number of XC7K325T manufactured by Xilinx company. The clock module 6 includes a clock chip and a crystal oscillator. The clock chip was an 8T49N488A chip manufactured by IDT company. The crystal oscillator is connected with the clock chip and provides a basic clock signal for the clock chip. The input clock pin and the output clock pin of the clock chip are respectively connected with two GPIO interfaces (GPIO interfaces are general purpose I/O ports) of the service module. For optimizing the clock signal provided by the service module.
As shown in fig. 2, the management module 2 includes a first processor 2-1 and a second processor 2-2. The first processor 2-1 adopts a singlechip with the model number STM32F 107. The second processor 2-2 employs an EP4CE6 chip manufactured by Altera company. The first processor 2-1, the second processor 2-2 and the service module 5 communicate with each other via a serial peripheral interface bus (i.e., SPI, serial Peripheral Interface). The second processor 2-2 communicates with the first memory chip 3-1 via a serial peripheral interface bus. The second processor 2-2 reads the preset configuration information stored in the first memory chip 3-1 and transmits it to the service module 5. The first processor 2-1 communicates with the second memory chip 3-2 via an Inter-integrated circuit bus (i.e., I2C, inter-Integrated Circuit). The first processor 2-1 reads configuration information of the first optical module and the second optical module stored in the second memory chip 3-2. The first GPIO interface of the second processor 2-2 is connected to the rotational speed output of the fan 7. The second processor 2-2 reads the rotational speed of the fan. The second GPIO interface of the second processor 2-2 is connected to the speed control input of the fan. The second processor 2-2 controls the rotational speed of the fan by Pulse-Width Modulation (PWM).
As shown in fig. 3, the power supply system 1 includes a switching power supply module 1-1 and a power supply chip 1-2. The switching power supply module 1-1 adopts a non-isolated switching power supply module 1-1 which is manufactured by Huashi technology Co., ltd and has the model number of NAD12S 10-A. The power chip 1-2 employs a power chip 1-2 of model MP1484EN manufactured by core systems Co., ltd. The 3.3V voltage output end of the switching power supply module 1-1 is connected with the first processor 2-1, the second processor 2-2 and the 3.3V power supply interface of the service module 5. The 1.0V voltage output end of the switching power supply module 1-1 is connected with the 1.0V power supply end of the service module 5. The 2.5V voltage output end of the power chip 1-2 is connected with the clock chip, the second processor 2-2 and the 2.5V power supply end of the service module 5. The 1.8V voltage output end of the power chip 1-2 is connected with the 1.8V power supply end of the service module 5. 1.2V voltage output terminal of power chip 1-2 and second processing the 1.2V power supply end of the device 2-2 and the service module 5 is connected. The 1.0V voltage output end of the power chip 1-2 is connected with the 1.0V power supply end of the service module 5. The switching power supply module 1-1 and the power supply chip 1-2 are all in communication with the second processor 2-2 through an internal integrated circuit bus. The switching power supply module 1-1 and the power supply chip 1-2 transmit their own output voltage, output current and temperature to the second processor 2-2.
As shown in fig. 4, five GTX interfaces (Gigabit Transceiver interfaces, i.e. gigabit transceivers) of the service module 5 in the office device are respectively connected to the electrical signal output ports of the first optical module 4-1 and the electrical signal input ports of the four second optical modules 4-2. The service module 5 communicates with the clock chip, the first optical module and the four second optical modules through the internal integrated circuit bus. The service module 5 monitors the working states of the clock module, the first optical module and the second optical module. The working states of the clock module comprise whether the clock is locked, whether the clock is input or not, and whether the clock keeps the state before the clock is lost or not. The working states of the first optical module and the second optical module comprise the received optical signal power, the output optical signal power and the temperature.
The five GTX interfaces of the service module 5 in the remote equipment are respectively connected with the electric signal input port of the first optical module 4-1 and the electric signal output ports of the four second optical modules 4-2. The service module 5 communicates with the clock chip, the first optical module and the four second optical modules through the internal integrated circuit bus.
The local side equipment and the remote side equipment have the following two application modes:
implementation of the embodiments example 1
As shown in fig. 5, a local device i corresponds to a remote device ii. The local side equipment I is arranged at an operator. The optical fiber interfaces of the four second optical modules in the local side equipment I are respectively connected with four output optical fibers. The four output optical fibers are connected with an optical line terminal III. The optical fiber interface of the first optical module in the local side equipment I is connected with the optical fiber interface of the first optical module of the remote side equipment II. The remote equipment II is arranged in an optical cable cross connecting cabinet or a machine room of the user. The optical fiber interfaces of the four second optical modules in the remote equipment II are respectively connected with the input ports of the four optical splitters IV. The output ports of the four optical splitters IV are connected with a plurality of optical network units V.
In the remote device ii, the four first optical modules convert the input optical signals into electrical signals and transmit the electrical signals to the service module 5. The service module 5 converts the input electrical signal into an electrical signal corresponding to the OTN optical signal, and transmits the electrical signal to the second optical module. The second optical module converts the input electric signals into optical signals after processing and outputs the optical signals.
In the local side equipment I, the second optical module converts the input optical signal into an electrical signal and transmits the electrical signal to the service module 5. The service module 5 converts the input electrical signal into an electrical signal corresponding to the GPON optical signal and transmits the electrical signal to the first optical module. The first optical module converts the input electric signals into optical signals after processing and outputs the optical signals.
Example 2
As shown in figure 6 of the drawings, one local side device I corresponds to n far-end devices II, and n is more than or equal to 2. The local side equipment I is arranged at an operator. The optical fiber interfaces of the four second optical modules in the local side equipment I are respectively connected with four output optical fibers. The four output optical fibers are connected with an optical line terminal III. The optical fiber interface of the first optical module in the local side equipment I is connected with the input port of the wavelength division multiplexer VI. The n output ports of the wavelength division multiplexer VI are respectively connected with the optical fiber interfaces of the first optical modules of the n remote devices II. The n remote devices II are respectively arranged in the optical cable cross-connecting boxes or the machine rooms of the n user terminals. The optical fiber interfaces of the four second optical modules in the remote equipment II are respectively connected with the input ports of the four optical splitters IV corresponding to the user side. The output ports of the four optical splitters IV are connected with a plurality of optical network units V.
In the remote device ii, the four first optical modules convert the input optical signals into electrical signals and transmit the electrical signals to the service module 5. The service module 5 processes the input electrical signal and transmits the processed electrical signal to the second optical module. The second optical module converts the input electric signal into an optical signal after processing and transmits the optical signal to the wavelength division multiplexer VI. The wavelength division multiplexer vi copies the received optical signals to n identical optical signals, and the n identical optical signals are transmitted to the second optical module of the local side device i.
In the local side equipment I, the second optical module converts the input optical signal into an electrical signal and transmits the electrical signal to the service module 5. The service module 5 transmits an electrical signal corresponding to the input electrical signal GPON optical signal to the first optical module. The first optical module converts the input electric signals into optical signals after processing and outputs the optical signals.
The aggregate zoom-out method of the GPON signal aggregate zoom-out equipment specifically comprises the following steps:
step one: the four second optical modules in the local side equipment convert four input GPON optical signals into four first electric signals and transmit the four first electric signals to the service module. The service module extracts first clock signals from the four first electric signals respectively and transmits the first clock signals to the clock chip. The clock chip de-jitters the received four first clock signals and transmits the de-jittered four first clock signals to the service module. The service module integrates the four first electric signals and the four received first clock signals respectively. The optimization of the first electrical signal is completed.
Step two: and the service module of the local side equipment encapsulates the four paths of first electric signals into one path of second electric signals.
1. The four first electrical signals resulting from step one are mapped into four first OPU1 (optical channel payload unit 1) signals, respectively, in a fixed bit rate manner (CBR, constant Bit Rate).
2. According to the g.709 protocol issued by the international telecommunication union telecommunication standardization sector, overhead bytes are added to the four first OPU1 signals, respectively, to obtain four first ODU1 (optical channel data unit 1) signals.
3. The four first ODU1 signals are mapped into four first ODU 12 (Optical channel Data Tributary Unit, optical channel data tributary unit 12) signals, respectively, according to the g.709 protocol published by the international telecommunication union telecommunication standard office.
4. The four first ODTU12 signals are multiplexed into one first ODTUG2 (Optical channel Data Tributary Unit, optical channel data tributary unit group 2) signal according to the g.709 protocol promulgated by the international telecommunication union telecommunication standardization sector.
5. The first ODTUG2 signal is mapped into a first OPU2 signal (optical channel payload unit 2) according to the g.709 protocol promulgated by the international telecommunication union telecommunication standard office. The first OPU2 signal is then mapped to a first ODU2 (optical channel data unit 2) signal. The first ODU2 signal is then mapped into a first OTU2 (fully standardized optical channel transfer unit 2) signal. The first OTU2 signal acts as a second electrical signal. The service module transmits the second electrical signal to the first optical module.
Step three: the first optical module in the local side equipment converts the received second electric signal into an OTN optical signal. If the remote equipment is only one, the first optical module in the local equipment transmits the OTN optical signal to the first optical module in the remote equipment. If the number of the far-end devices is n, the first optical module in the local side device transmits the OTN optical signals to the wavelength division multiplexer. The wavelength division multiplexer copies the received OTN optical signals into n pieces respectively to a first optical module within the n remote devices.
And step four, the first optical module in the remote equipment converts the received OTN optical signal into a third electrical signal and transmits the third electrical signal to the service module. A service module in the remote device extracts the second clock signal from the third electrical signal and transmits the second clock signal to the clock chip. The clock chip de-jitters the received second clock signal and transmits the de-jittered second clock signal to the service module. The service module integrates the third electrical signal with the received clock signal. The optimization of the third electrical signal is completed.
And fifthly, splitting one path of third electric signals into four paths of fourth electric signals by the service module of the remote equipment.
1. And mapping the third electric signal obtained in the step four into a second ODU2 signal according to a G.709 protocol issued by an International telecommunication Union telecommunication Standard substation. And then the second ODU2 signal mapped to a second OPU2 signal. The second OPU2 signal is then mapped to a second ODTUG2 signal.
2. The second ODTUG2 signal is split into four second ODTU12 signals according to the g.709 protocol published by the international telecommunication union telecommunication standard office.
3. The four second ODTU12 signals are mapped into four second ODU1 signals, respectively, according to the g.709 protocol issued by the international telecommunication union telecommunication standard office.
4. According to the g.709 protocol published by the international telecommunication union telecommunication standardization sector, overhead bytes within the four second ODU1 signals are removed, resulting in four second OPU1 signals.
5. The four second OPU1 signals are mapped into four fourth electrical signals, respectively, at a fixed bit rate. The service module transmits four fourth electrical signals to the four second optical modules respectively.
And step six, converting four fourth electrical signals into four output GPON optical signals by four second optical modules in the remote equipment, and respectively transmitting the four output GPON optical signals to four optical splitters. The four optical splitters transmit the received output GPON optical signals to a plurality of optical network units.
Claims (9)
1. The GPON signal aggregation remote equipment comprises local side equipment and remote side equipment; which is a kind of features (e.g. a character) the method comprises the following steps: the local side equipment and the remote side equipment comprise a power supply system, a management module, a storage module, an optical interface module, a service module, a clock module and a fan; the power supply system supplies power to the management module, the storage module, the optical interface module, the service module and the clock module; the clock module comprises a clock chip; input clock pin and output clock of the clock chip the pin is respectively connected with two GPIO interfaces of the service module;
the management module comprises a first processor and a second processor; the memory module comprises a first memory chip and a second memory chip; the first processor, the second processor and the service module are communicated with each other through a serial peripheral interface bus; the second processor is communicated with the first memory chip through a serial peripheral interface bus; the first processor and the second memory chip communicate through an internal integrated circuit bus; the first GPIO interface of the second processor is connected with the rotating speed output port of the fan; the second GPIO interface of the second processor is connected with the speed control input port of the fan;
the optical interface module comprises a first optical module and four second optical modules; the service module is communicated with the first optical module and the four second optical modules through an internal integrated circuit bus; in the local side equipment, the five GTX interfaces of the service module are respectively connected with the electric signal output ports of the first optical module and the electric signal input ports of the four second optical modules; in the remote equipment, five GTX interfaces of a service module are respectively connected with an electric signal input port of a first optical mode and electric signal output ports of four second optical modules;
when the number of the remote equipment is only one, the optical fiber interface of the first optical module in the local equipment is connected with the optical fiber interface of the first optical module of the remote equipment; when the number of the far-end devices is n, n is more than or equal to 2, and an optical fiber interface of a first optical module in the local side device is connected with an input port of the wavelength division multiplexer; the n output ports of the wavelength division multiplexer are respectively connected with the optical fiber interfaces of the first optical modules of the n far-end devices;
the local side equipment is arranged at an operator; the optical fiber interfaces of the four second optical modules in the local side equipment are respectively connected with four output optical fibers; the four output optical fibers are connected with the optical line terminal; the remote equipment is arranged in an optical cable cross connecting cabinet or a machine room of the user; the optical fiber interfaces of the four second optical modules in the remote equipment are respectively connected with the input ports of the four optical splitters; the output ports of the four optical splitters are connected with a plurality of optical network units; in the local side equipment I, a second optical module converts an input optical signal into an electric signal and transmits the electric signal to a service module (5); the business module (5) converts the input electric signal into an electric signal corresponding to the GPON optical signal and transmits the electric signal to the first optical module; the first optical module converts the input electric signals into optical signals after processing and outputs the optical signals; in the remote equipment II, four first optical modules convert the input optical signals into electric signals and transmit the electric signals to a service module (5); the service module (5) converts the input electric signal into an electric signal corresponding to the OTN optical signal and transmits the electric signal to the second optical module; the second optical module converts the input electric signals into optical signals after processing and outputs the optical signals.
2. The GPON signal aggregation remote device of claim 1, wherein: the first memory chip is a W25Q128FVSG chip manufactured by Winbond company; the second memory chip adopts an AT24C16 chip manufactured by ATMEL company.
3. The GPON signal aggregation remote device of claim 1, wherein: the model of the first optical module is ZB7784099-DCL; the model of the second optical module in the local side equipment is ZP5342034-KCST; second light in the remote device the model of the module is ZP5432043-JCS.
4. The GPON signal aggregation remote device of claim 1, wherein: the clock module also comprises a crystal oscillator; the crystal oscillator is connected with the clock chip; the clock chip adopts an 8T49N488A chip manufactured by IDT company.
5. The GPON signal aggregation remote device of claim 1, wherein: the service module adopts a service chip with the model number of XC7K325T manufactured by Xilinx company.
6. The GPON signal aggregation remote device of claim 1, wherein: the first processor adopts a singlechip with the model of STM32F 107; the second processor adopts an EP4CE6 chip manufactured by Altera company.
7. The GPON signal aggregation remote device of claim 1, wherein: the power supply system comprises a switch power supply module and a power supply chip; the 3.3V voltage output end of the switching power supply module is connected with the 3.3V power supply interfaces of the first processor, the second processor and the service module; the 1.0V voltage output end of the switching power supply module is connected with the 1.0V power supply end of the service module; the 2.5V voltage output end of the power supply chip is connected with the clock chip, the second processor and the 2.5V power supply end of the service module; the 1.8V voltage output end of the power supply chip is connected with the 1.8V power supply end of the service module; the 1.2V voltage output end of the power supply chip is connected with the 1.2V power supply end of the second processor and the service module; the 1.0V voltage output end of the power supply chip is connected with the 1.0V power supply end of the service module; the switch power supply module and the power supply chip are communicated with the second processor through the internal integrated circuit bus.
8. The GPON signal aggregation remote device of claim 7, wherein: the switching power supply module adopts a non-isolated switching power supply module with the model number of NAD12S10-A manufactured by Hua technology Co., ltd; the power chip is a power chip of model MP1484EN manufactured by core systems limited.
9. The method for aggregate zoom-out of a GPON signal aggregate zoom-out device according to claim 1, wherein:
step one: the four second optical modules in the local side equipment convert four input GPON optical signals into four first electric signals and transmit the four first electric signals to the service module; the service module extracts first clock signals from the four first electric signals respectively and transmits the first clock signals to the clock chip; the clock chip de-jitters the received four first clock signals and transmits the de-jittered four first clock signals to the service module; the service module respectively integrates the four first electric signals and the four received first clock signals;
step two: the service module of the local side equipment encapsulates four paths of first electric signals into one path of second electric signals;
1. mapping the four first electrical signals obtained in the step one into four first OPU1 signals respectively in a fixed bit rate mode;
2. according to the G.709 protocol issued by the International telecommunication Union telecommunication Standard substation, overhead bytes are respectively added in the four first OPU1 signals to obtain four first ODU1 signals;
3. according to the G.709 protocol issued by the International telecommunication Union telecommunication Standard substation, mapping the four first ODU1 signals into four first ODTU12 signals respectively;
4. multiplexing the four first ODTU12 signals into one first ODTUG2 signal according to a g.709 protocol issued by the international telecommunication union telecommunication standard office;
5. mapping the first ODTUG2 signal into a first OPU2 signal according to the g.709 protocol issued by the international telecommunication union telecommunication standard office; mapping the first OPU2 signal into a first ODU2 signal; then mapping the first ODU2 signal into a first OTU2 signal; the first OTU2 signal as a second electrical signal; the service module transmits the second electric signal to the first optical module;
step three: the first optical module in the local side equipment converts the received second electric signal into an OTN optical signal; if the remote equipment is only one, the first optical module in the local equipment transmits the OTN optical signal to the first optical module in the remote equipment; if the number of the far-end devices is n, a first optical module in the local side device transmits OTN optical signals to the wavelength division multiplexer; the wavelength division multiplexer copies the received OTN optical signals into n pieces and then respectively transmits the n pieces of OTN optical signals to first optical modules in n pieces of far-end equipment;
step four, a first optical module in the remote equipment converts the received OTN optical signal into a third electric signal and transmits the third electric signal to the service module; a service module in the remote equipment extracts a second clock signal from the third electric signal and transmits the second clock signal to the clock chip; the clock chip de-jitters the received second clock signal and transmits the de-jittered second clock signal to the service module; the business module integrates the third electric signal with the received clock signal;
fifthly, splitting one path of third electric signals into four paths of fourth electric signals by a service module of the remote equipment;
1. according to the G.709 protocol issued by the International telecommunication Union telecommunication Standard substation, mapping the third electric signal obtained in the step four into a second ODU2 signal; mapping the second ODU2 signal into a second OPU2 signal; then mapping the second OPU2 signal to a second ODTUG2 signal;
2. splitting the second ODTUG2 signal into four second ODTU12 signals according to a g.709 protocol issued by the international telecommunication union telecommunication standard office;
3. according to the G.709 protocol issued by the International telecommunication Union telecommunication Standard substation, mapping the four second ODTU12 signals into four second ODU1 signals respectively;
4. according to the G.709 protocol issued by the International telecommunication Union telecommunication Standard substation, the overhead bytes in the four second ODU1 signals are deleted to obtain four second OPU1 signals;
5. mapping the four second OPU1 signals into four fourth electrical signals, respectively, in a fixed bit rate manner; the service module transmits four fourth electric signals to four second optical modules respectively;
and step six, converting four fourth electrical signals into four output GPON optical signals respectively by four second optical modules in the remote equipment and outputting the four output GPON optical signals.
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| CN112039583A (en) * | 2019-06-04 | 2020-12-04 | 上海欣诺通信技术股份有限公司 | Aggregation remote local side, remote side equipment and optical fiber network system |
| CN111510799A (en) * | 2020-04-16 | 2020-08-07 | 广州市满航通信科技有限公司 | GPON aggregation remote system |
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