CN105792026B - Optical line terminal control method, optical line terminal and optical line system - Google Patents
Optical line terminal control method, optical line terminal and optical line system Download PDFInfo
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Abstract
The invention has disclosed control method, optical line terminal and optical line system of a optical line terminal, the optical line terminal includes processor and optical line terminal basic unit, the optical line terminal basic unit possesses two or more different working modes, the working mode includes agreement and speed when the optical line terminal basic unit processes the data; the processor is used for determining the working mode of the optical line terminal basic unit and controlling the optical line terminal basic unit to process data in the determined working mode; the optical line termination base unit is adapted to operate under control of the processor. Through the implementation of the invention, different working modes are selected, so that the requirements of the optical line terminal under different scenes can be met, and the optical line terminal provided by the invention has better compatibility.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for controlling an optical line terminal, and an optical line system.
Background
In the NG-PON2 (next generation passive optical network standard) protocol, an optical line system is divided into a point-to-point (PtP) mode and a point-to-multipoint (PtMP) mode according to different application scenarios, and an OLT connecting different networks needs to support different protocols and data rates, such as an OLT supporting a 2.5/10Gbps rate in the point-to-point (PtP) mode and an OLT supporting a 2.5/10Gbps rate in the point-to-multipoint (PtMP) mode; in practical applications, a communication operator needs to set an OLT with a 2.5/10Gbps rate in a point-to-point (PtP) mode between a base station and an optical fiber, and set an OLT with a 2.5/10Gbps rate in a point-to-multipoint (PtMP) mode between the optical fiber and a user, the communication operator needs to purchase different types of OLTs, and when the communication operator increases a data transmission rate, the OLT needs to be replaced, and the OLT compatibility is low.
Therefore, how to provide an optical line terminal OLT capable of improving compatibility is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention provides an optical line terminal control method, an optical line terminal and an optical line system.
The invention provides a control method of an optical line terminal, in one embodiment, the optical line terminal comprises an optical line terminal basic unit, the optical line terminal basic unit has two or more different working modes, and the working modes comprise a protocol and a speed when the optical line terminal basic unit processes data; the control method comprises the following steps: determining the working mode of the optical line terminal basic unit; and controlling the optical line terminal basic unit to process data in the determined working mode.
Further, the step of determining the operation mode of the optical line termination base unit in the above embodiment includes: and determining the working mode according to the application scene of the optical line terminal, or determining the working mode according to the user operation.
Further, the optical line terminal base unit in the above embodiments includes an optical sending unit for converting an electrical signal into an optical signal, where the optical sending unit includes an optical network protocol module supporting different passive optical network protocols and/or rates, a parallel-to-serial conversion module, and an optical transmitter; the step of controlling the optical line terminal base unit to process data in the determined working mode comprises the following steps: and setting the optical network protocol module according to the protocol and the rate in the working mode, and setting the working rates of the parallel-serial conversion module and the optical transmitter according to the rate in the working mode.
Further, the optical line terminal base unit in the above embodiments includes an optical receiving unit for converting an optical signal into an electrical signal, where the optical receiving unit includes an optical receiver, a serial-to-parallel conversion and clock data recovery module, and an optical network protocol module supporting different passive optical network protocols and/or rates; the step of controlling the optical line terminal base unit to process data in the determined working mode comprises the following steps: and setting the working speed of the optical receiver and the serial-parallel conversion and clock data recovery module according to the speed in the working mode, and setting the optical network protocol module according to the protocol and the speed in the working mode.
The invention provides an optical line terminal, which comprises a processor and an optical line terminal basic unit in one embodiment, wherein the optical line terminal basic unit has two or more different working modes, and the working modes comprise a protocol and a speed when the optical line terminal basic unit processes data; the processor is used for determining the working mode of the optical line terminal basic unit and controlling the optical line terminal basic unit to process data in the determined working mode; the optical line termination base unit is adapted to operate under control of the processor.
Further, the processor in the foregoing embodiment is specifically configured to determine the working mode according to an application scenario of the optical line terminal, or determine the working mode according to a user operation.
Further, the optical line terminal in the above embodiments further includes a clock generator, where the clock generator is configured to provide a system clock for the optical line terminal base unit under the control of the processor.
Further, the optical line terminal in the above embodiment is characterized in that the optical line terminal includes two or more optical line terminal basic units, and the processor is further configured to control the two or more optical line terminal basic units to process data in their respective determined operating modes.
Correspondingly, the invention also provides an optical line system which comprises the optical line terminal provided by the invention.
The invention has the beneficial effects that:
in the scheme provided by the invention, the optical line terminal comprises the optical line terminal basic units supporting different working modes, and the working modes of the optical line terminal basic units are dynamically determined according to the working parameters of the optical line terminal in practical application, so that the requirements on the working parameters of the optical line terminal under different scenes can be met, and the optical line terminal provided by the invention has better compatibility compared with the existing optical line terminal only supporting a specific mode.
Drawings
Fig. 1 is a flowchart of a control method of an optical line terminal according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an optical line terminal according to a second embodiment of the present invention;
fig. 3 is a schematic connection diagram of an optical line system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an optical line terminal in a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an optical line terminal base unit in a third embodiment of the present invention.
Detailed Description
The invention will now be further explained by means of embodiments in conjunction with the accompanying drawings.
The optical line terminal often uses different parameters in different installation/application scenes, the optical line terminal basic unit related by the invention has two or more different working modes, the working modes comprise protocols and rates when the optical line terminal basic unit processes data, the protocols comprise but are not limited to a point-to-point (PtP) mode and a point-to-multipoint (PtMP) and other data transmission protocols, and the rates comprise but are not limited to 2.5Gbps, 10Gbps, 0-10Gbps and other data transmission rates.
The first embodiment:
fig. 1 is a flowchart of a method for controlling an optical line terminal according to a first embodiment of the present invention, and as can be seen from fig. 1, in this embodiment, the method for controlling an optical line terminal according to the present invention includes the following steps:
s101: determining the working mode of the optical line terminal basic unit;
the step is simple selection and determination and is not described again;
s102: and controlling the optical line terminal basic unit to process data in the determined working mode.
In some embodiments, step S101 in the embodiment shown in fig. 1 comprises: before the optical line terminal is according, determining the working mode according to the application scene of the optical line terminal, or after the optical line terminal is according, determining the working mode according to user operation, such as operation of issuing a selection command by an operator through a network manager. An interactive interface is provided for a communication operator, so that the communication operator can set an application scenario (such as an installation position and a data transmission rate of the OLT) of the optical line terminal according to needs, and further determine a working mode according to the application scenario.
In some embodiments, step S101 in the embodiment shown in fig. 1 may further include: determining an operating mode according to a data format of data processed in an uplink direction and/or a downlink direction of an optical line terminal, specifically, the optical line terminal does not set an operating parameter before installation, determining the operating mode according to the data format of the data received/processed in the uplink direction and/or the downlink direction when the device is initialized, determining the operating mode according to a data source and a transmission rate, for example, when the data source of the received optical data is a user device, setting a protocol in its operating parameters to be a point-to-multipoint protocol (the user has a low requirement on the data transmission rate, and can use a plurality of users to multiplex the same wavelength to complete data transmission), for example, when the data source of the received optical data is a base station, setting the protocol in its operating parameters to be a point-to-point protocol (the base station has a high requirement on the data transmission rate when it performs data backhaul, generally, one base station is adopted to complete data transmission by using one wavelength), the rate in the working parameters is set according to the transmission rate of the optical data, and other scenes are similar to the rate and are not repeated; and determining the working mode according to the data format, and performing dynamic configuration during working, wherein data can be cached at the moment, and data processing and transmission are performed after the dynamic configuration is finished.
In some embodiments, the optical line terminal base unit includes an optical transmission unit for converting electrical signals into optical signals, the optical transmission unit including an optical network protocol module supporting different passive optical network protocols and/or rates, a parallel-to-serial conversion module, and an optical transmitter; at this time, step S102 in the embodiment shown in fig. 1 includes: and setting an optical network protocol module according to the protocol and the rate in the working mode of each basic unit, and setting the working rates of the parallel-serial conversion module and the optical transmitter according to the rate in the working mode.
In some embodiments, the optical line terminal base unit comprises an optical receiving unit for converting an optical signal into an electrical signal, the optical receiving unit comprising an optical receiver, a serial-to-parallel conversion and clock data recovery module, and an optical network protocol module supporting different passive optical network protocols and/or rates; at this time, step S102 in the embodiment shown in fig. 1 includes: and setting the working speed of the optical receiver and the serial-parallel conversion and clock data recovery module according to the speed in the working mode of each basic unit, and setting an optical network protocol module according to the protocol and the speed in the working mode.
In some embodiments, the optical line terminal includes two or more optical line terminal basic units, and in this case, step S102 in the embodiment shown in fig. 1 includes: and controlling two or more optical line terminal basic units in a wavelength division multiplexing mode to process data in the respective determined working modes.
Second embodiment:
fig. 2 is a schematic structural diagram of an optical line terminal according to a second embodiment of the present invention, and as can be seen from fig. 2, in this embodiment, an optical line terminal 2 according to the present invention includes a processor 21 and an optical line terminal base unit 22, wherein,
the processor 21 is configured to determine an operating mode of the optical line termination base unit 22, and control the optical line termination base unit 22 to process data in the determined operating mode;
the optical line termination base unit 22 is arranged to operate under the control of the processor 21.
In some embodiments, the processor 21 in the embodiment shown in fig. 2 is specifically configured to determine the operation mode according to an application scenario of the optical line terminal, or determine the operation mode according to a user operation.
In some embodiments, as shown in fig. 2, the optical line terminal 2 further includes a clock generator 23, where the clock generator 23 is configured to generate a system clock under the control of the processor 21, so as to provide the system clock for the operation of each functional module in the optical line terminal base unit 22.
In some embodiments, as shown in fig. 2, the optical line terminal 2 includes two or more optical line terminal base units 22 (only 2 are exemplarily shown in fig. 2), and the two or more optical line terminal base units 22 operate in a wavelength division multiplexing mode under the control of the processor 21, that is, each optical line terminal base unit 22 corresponds to a different wavelength of the optical signal, and the plurality of optical line terminal base units 22 are multiplexed into an optical line terminal of an uplink and downlink multi-wavelength pair by the wavelength division multiplexing mode.
The invention will now be further explained with reference to specific application examples.
The third embodiment:
for the Optical line system, in this embodiment, as shown in fig. 3, an external device 31 (using data services) accesses an Optical Network through an Optical Network Unit (ONU) 32, the external device 31 includes a base station and a user equipment, the ONU connected to the base station operates in a point-to-point mode, the ONU connected to the user equipment operates in a point-to-multipoint mode, an internal device 33 (for providing services such as data) accesses the Optical Network through the Optical line terminal 2 provided by the present invention, and the Optical line terminal 2 is connected to the ONU 32 through an Optical fiber. In practical application, the optical fiber may transmit 8 optical signals with different wavelengths, each optical signal with a different wavelength corresponds to one optical line terminal base unit 22 in the optical line terminal 2, the number of the optical signals may be increased or decreased according to practical application, and at this time, only the optical line terminal 2 or a part of the optical line terminal base units 22 need to be increased (enabled)/decreased (disabled). In the prior art, the OLT supporting different protocols/rates needs to be purchased, but the OLT with the same protocol/production needs to be purchased/produced on the side of the embodiment, so that the compatibility is strong, and the communication operator can conveniently purchase, update and upgrade the system.
For the optical line terminal 2, in this embodiment, as shown in fig. 4, the optical line terminal 2 includes 8 optical line terminal basic units 22, and in order to implement wavelength division multiplexing, the optical line terminal 2 further includes a wavelength division multiplexer 24, and the wavelength division multiplexer 24 implements separation and integration of optical signals with different wavelengths.
For the optical line terminal basic unit 22, in the present embodiment, as shown in fig. 5, the optical line terminal basic unit 22 includes a TWDM-PON (time and wavelength multiplexed passive optical network), a down MAC (supporting 2.5/10Gbps Data rate) 501, a TWDM-PON upstream MAC (supporting 2.5Gbps Data rate) 502, a dm-PON upstream MAC (supporting 10Gbps Data rate) 503, a PtP WDM-PON (wavelength multiplexed passive optical network), a wavelength division multiplexed passive optical network MAC (supporting 0-10Gbps Data rate) 504, a MAC selection module 505, a BM (burst mode) -CDR (Data Recovery, Clock Data Recovery) MAC (supporting 2.5Gbps Data rate) 507, and a CDR (supporting 10Gbps Data rate) CDR 506, CM (continuous Module) -CDR MAC (supporting 0-10Gbps data rates) 508, data select switch 509, data distribution switch 510, multi-rate continuous mode parallel-to-serial converter 511, optical transmitter 512, and optical receiver 513.
The TWDM-PON downlink MAC501 and the PtP WDM-PON MAC504 are used as optical network protocol modules of an optical transmission unit in an optical line terminal basic unit, the parallel-serial converter 511 in a multi-rate continuous mode is used as a parallel-serial conversion module, and the data selection switch 509 selects data output from 501 or 504 to the parallel-serial converter 511 according to a working protocol; the TWDM-PON upstream MAC502, the TWDM-PON upstream MAC503 and the PtP WDM-PON MAC504 are used as optical network protocol modules in the optical receiving unit, the BM-CDR MAC506, the BM-CDR MAC507 and the CM-CDR MAC508 are used as serial-parallel conversion and clock data recovery modules, and the data distribution switch 510 outputs the electrical signals to the corresponding serial-parallel conversion and clock data recovery modules for data recovery according to parameters (including burst mode or continuous mode and data rate) of the electrical signals output by the optical receiver 513; the MAC selection module 505, the data selection switch 509, and the data distribution switch 510 perform MAC (501, 502, 503, 504, 506, 507, and 508) selection under the control of the processor 21, where the selected MAC is in an active state and the unselected MAC is in a sleep state;
specifically, in the application scenario of this embodiment, the working modes of the optical line terminals are as follows:
for the olt base unit 22 connected to the ONU (connected base station) operating in the point-to-point mode, the olt base unit 22 needs to operate in a point-to-point (PtP) protocol, and at this time, the MAC selection module 505 in the olt base unit 22 selects the MAC504 as the ONU protocol module in the optical transmission unit and the ONU protocol module in the optical reception unit, the data selection switch 509 selects the data of the MAC504 as the input data of the parallel-to-serial converter 511, and the data distribution switch 510 selects the MAC508 as the serial-to-parallel conversion and clock data recovery module in the optical reception unit; at this time, the outside plant 32 is a base station, an optical signal input by the base station through the optical fiber is converted into an electrical signal by the optical receiver 513, the MAC508, and the MAC504 and then transmitted to the inside plant 33, and the electrical signal input by the inside plant 33 is converted into an optical signal by the MAC504, the parallel-serial converter 511, and the optical transmitter 512 and transmitted to the ONU connected to the base station;
for the olt base unit 22 connected to an ONU (connected user equipment) operating in a point-to-multipoint mode, the olt base unit 22 needs to operate in a point-to-multipoint (PtMP) protocol, at this time, the MAC selection module 505 in the olt base unit 22 selects the MAC501 as an ONU protocol module in the ONU, selects the MAC502 and/or the MAC503 (which needs to be determined according to the data rate of the electrical signal converted from the received optical signal) as an ONU protocol module in the ONU, the data selection switch 509 selects the data of the MAC501 as the input data of the serializer 511, and the data distribution switch 510 selects the MAC506 and/or the MAC507 (which needs to be determined according to the data rate of the electrical signal converted from the received optical signal) as a deserializing and clock data recovering module in the ONU; at this time, the outdoor device 32 is a user device, the user device multiplexes the same wavelength in a time division multiplexing mode, an optical signal input through an optical fiber is converted into an electrical signal by the optical receiver 513, the MAC506 and/or the MAC507, the MAC502 and/or the MAC503 and then is sent to the indoor device 33, and the electrical signal input by the indoor device 33 is converted into an optical signal by the MAC501, the parallel-serial converter 511 and the optical transmitter 512 and is sent to the ONU connected to the user device.
In summary, the implementation of the present invention has at least the following advantages:
the optical line terminal comprises an optical line terminal basic unit supporting different working modes, and the working mode of the optical line terminal basic unit is determined during actual application, so that the requirements on the working parameters of the optical line terminal under different scenes can be met, and the optical line terminal provided by the invention has better compatibility compared with the conventional optical line terminal only supporting a specific mode.
The above embodiments are only examples of the present invention, and are not intended to limit the present invention in any way, and any simple modification, equivalent change, combination or modification made by the technical essence of the present invention to the above embodiments still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The control method of the optical line terminal is characterized in that the optical line terminal comprises an optical line terminal basic unit, the optical line terminal basic unit has two or more different working modes, and the working modes comprise a protocol and a speed when the optical line terminal basic unit processes data; the control method comprises the following steps:
determining the working mode of the optical line terminal basic unit; the step of determining the working mode of the optical line terminal base unit comprises the following steps: determining the working mode according to a data format of data processed in the uplink direction and/or the downlink direction of the optical line terminal, wherein the data format comprises a data source and a transmission rate;
and controlling the optical line terminal basic unit to process data in the determined working mode.
2. The control method according to claim 1, wherein the step of determining the operation mode of the optical line terminal base unit comprises: and determining the working mode according to the application scene of the optical line terminal, or determining the working mode according to the user operation.
3. The control method according to claim 1, wherein the optical line terminal base unit includes an optical transmission unit for converting an electrical signal into an optical signal, the optical transmission unit including an optical network protocol module supporting different passive optical network protocols and/or rates, a parallel-to-serial conversion module, and an optical transmitter; the step of controlling the optical line terminal base unit to process data in the determined working mode comprises the following steps: and setting the optical network protocol module according to the protocol and the rate in the working mode, and setting the working rates of the parallel-serial conversion module and the optical transmitter according to the rate in the working mode.
4. The control method according to claim 1, wherein the optical line terminal base unit comprises an optical receiving unit for converting an optical signal into an electrical signal, the optical receiving unit comprising an optical receiver, a serial-to-parallel conversion and clock data recovery module, and an optical network protocol module supporting different passive optical network protocols and/or rates; the step of controlling the optical line terminal base unit to process data in the determined working mode comprises the following steps: and setting the working speed of the optical receiver and the serial-parallel conversion and clock data recovery module according to the speed in the working mode, and setting the optical network protocol module according to the protocol and the speed in the working mode.
5. The method according to any one of claims 1 to 3, wherein the OLT comprises two or more OLT base units, and the step of controlling the OLT base units to process data in the determined working mode comprises: and controlling the two or more optical line terminal basic units to process data in the respective determined working modes in a wavelength division multiplexing mode.
6. An optical line terminal is characterized in that the optical line terminal comprises a processor and an optical line terminal basic unit, the optical line terminal basic unit is provided with two or more different working modes, and the working modes comprise a protocol and a speed when the optical line terminal basic unit processes data; wherein,
the processor is used for determining the working mode of the optical line terminal basic unit and controlling the optical line terminal basic unit to process data in the determined working mode; the step of determining the working mode of the optical line terminal base unit comprises the following steps: determining the working mode according to a data format of data processed in the uplink direction and/or the downlink direction of the optical line terminal, wherein the data format comprises a data source and a transmission rate;
the optical line terminal base unit is used for working under the control of the processor.
7. The olt of claim 6, further comprising a clock generator to provide a system clock for the olt base unit under control of the processor.
8. The olt of claim 6, wherein the olt comprises two or more olt base units, and wherein the processor is further configured to control the two or more olt base units to process data in their respective determined operating modes in a wavelength division multiplexing (wdm) mode.
9. An optical line system comprising an optical line terminal according to any of claims 6 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410805781.1A CN105792026B (en) | 2014-12-22 | 2014-12-22 | Optical line terminal control method, optical line terminal and optical line system |
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| CN201410805781.1A CN105792026B (en) | 2014-12-22 | 2014-12-22 | Optical line terminal control method, optical line terminal and optical line system |
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| CN102480651A (en) * | 2010-11-23 | 2012-05-30 | 中兴通讯股份有限公司 | Multi-rate optical signal transmission method, multi-rate optical signal transmission system and optical network unit |
| CN102547491A (en) * | 2010-12-29 | 2012-07-04 | 中兴通讯股份有限公司 | Optical line terminal, optical network unit and passive optical network system |
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| CN1980109A (en) * | 2005-12-02 | 2007-06-13 | 北京邮电大学 | Whole-business accessing method and WDM passive light network system |
| CN102480651A (en) * | 2010-11-23 | 2012-05-30 | 中兴通讯股份有限公司 | Multi-rate optical signal transmission method, multi-rate optical signal transmission system and optical network unit |
| CN102547491A (en) * | 2010-12-29 | 2012-07-04 | 中兴通讯股份有限公司 | Optical line terminal, optical network unit and passive optical network system |
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