CN103166701A - Parameter negotiation method in optical transmission, transmitting device, receiving device and optical module - Google Patents
Parameter negotiation method in optical transmission, transmitting device, receiving device and optical module Download PDFInfo
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Abstract
The invention provides a parameter negotiation method in optical transmission, a transmitting device, a receiving device and an optical module, and relates to the field of optical communication. Parameter negotiation is supported under optical transmission application scenes so as to lower parameter debugging workload and improve link reliability. The method includes converting a signal bearing a current negotiation parameter to a digital signal from an analog signal, after the digital signal is converted to an optical signal, sending the optical signal to the receiving device, converting the signal bearing the current negotiation parameter to the digital signal from the optical signal in the receiving device, and evaluating the signal quality of a whole link according to an electric signal bearing the current negotiation parameter after the digital signal is converted to the analog signal. The parameter negotiation method in the optical transmission, the transmitting device, the receiving device and the optical module are used for achieving transmission end parameter negotiation functions in the optical transmission.
Description
Technical field
The present invention relates to optical communication field, relate in particular to a kind of in light transmission method, transmitting apparatus, receiving equipment and the optical module of parameter negotiation.
Background technology
At present, along with improving constantly of Bus Speed, link load may cause receiving equipment to produce serious signal quality problem.Usually passive link presents low pass high resistant characteristic, and namely large to the decay of the high fdrequency component in signal, the low frequency component decay is little, and this is one of reason that causes the receiving equipment signal quality deteriorates.In order to improve the reliability of link transmission; transmission chip and receiving equipment receiving chip at transmitting apparatus usually can adopt preemphasis, postemphasis and balancing technique; preemphasis is that the transmission chip is to send chip to offset link to the difference of different frequency component attenuation characteristic in signal by the mode that reduces in advance signal medium and low frequency signal component energy by improving in advance the mode of signal medium-high frequency signal component energy, postemphasising.Preemphasis, the technology of postemphasising are the Main Means that solves the high-speed link decay, exactly because also the transmission chip in transmitting apparatus adopts the preemphasis/technology of postemphasising to solve the link attenuation problem, cause the transmitted signal " waveform " to change, and the waveform that this has changed has comprised the preemphasis that the sends chip/information of postemphasising.Balancing technique is receiving equipment before to the signal sampling judgement, processes to improve a kind of technology of follow-up chip decision reliability to receiving signal.Along with the continuous lifting of Bus Speed, only have the chip of transmission preemphasis/cooperatively interact balanced with receiving equipment of postemphasising just can obtain link performance preferably.
In order to guarantee link performance preferably, transmitting apparatus and receiving equipment have the preemphasis of a plurality of gears and balance parameters can supply to adjust usually, the combination of send and receive parameter will be a lot, find out optimum parameter and just need to use initiator parameters negotiation (Transmitter Training) from the parameter combinations of One's name is legion.
Sending parameter end negotiation functionality is exactly in order to realize transmitting-receiving two-end Automatic-searching optimized parameter.Send the parameter end and consult in fact additionally to have increased a sub in the bus initialization process, be used for the auto-negotiation of transmitting apparatus and receiving equipment relevant parameter.Its method is: after receiving-transmitting sides switches to the speed that consults, at first transmitting apparatus adopts the parameter transmitted signal of acquiescence, after receiving equipment receives signal, according to custom algorithm, current link performance is assessed, and send the parameter adjustment request according to assessment result to transmitting apparatus, transmitting apparatus is readjusted transmitted signal according to the adjustment request that receives, receiving equipment is assessed link performance again according to signal after adjusting, and again send the parameter adjustment request to transmitting apparatus according to assessment result, circulation according to this; Until the parameter of transmitting apparatus consults to finish when arriving boundary value or reaching negotiation time, the optimized parameter that final transmitting apparatus is determined according to receiving equipment sends data.
but, for the optical cable application scenarios, owing to having electro-optical conversion and light-to-current inversion, optical module changes into the signal of telecommunication with the light signal that receives, the reference voltage of the signal of telecommunication and the setting of local terminal optical module transmitting apparatus is compared, send " 1 " according to the amplitude of setting higher than reference voltage, otherwise send " 0 ", the signal of telecommunication that is light-to-current inversion output is determined by local terminal optical module transmitting apparatus setting (such as the amplitude of oscillation and weight) fully, irrelevant with the electric signal waveform before the electric light conversion, receiving terminal be can't see the variation of transmitting terminal signal waveform, therefore the light output electrical signals can not be consistent with the input electrical signal waveform, cause the initiator parameters information dropout of carrying in signal, therefore can not support to send ginseng under the optical cable application scenarios, number end negotiation functionality, need to manually adjust parameter at transmitting apparatus, the commissioning workload is large, and the transmitting apparatus parameter is fixed (can not dynamically adjust), link performance depends on the receiving equipment equalization performance to a great extent, when link property changes (such as temperature impact etc.) easily go out error code, reliability is low.
Summary of the invention
Embodiments of the invention provide a kind of in light transmission method, transmission, receiving equipment and the optical module of parameter negotiation, can consult by the support parameter end under the optical cable transmission application scenarios, reduced the workload of parameter testing, improved simultaneously the reliability of link.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provide a kind of in light transmission the method for parameter negotiation, described method comprises:
Be digital signal with signal transmission by analog signal conversion, the current consultation parameter of carrying in described signal transmission, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising;
Described signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that described receiving equipment is being converted to digital signal with described signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the described signal transmission of analog signal form.
In the possible implementation of the first, in conjunction with first aspect, described method also comprises:
If receive the parameter adjustment request that described receiving equipment sends, according to described parameter adjustment request, described current consultation parameter adjusted.
Second aspect, provide a kind of in light transmission the method for parameter negotiation, described method comprises:
Receive signal transmission from transmitting apparatus, and described signal transmission is converted to digital signal by light signal, described signal transmission is digital signal by described transmitting apparatus from analog signal conversion, and be converted to light signal from digital signal, wherein, the current consultation parameter of carrying in the described signal transmission of analog signal form, described current consultation parameter is described transmitting apparatus preemphasis or the parameter of postemphasising;
Described signal transmission is converted to analog signal by digital signal;
Assess the signal quality of whole link according to the described signal transmission of analog signal form.
In the possible implementation of the first, in conjunction with second aspect, described method also comprises:
If described current consultation parameter needs to adjust, send the parameter adjustment request to described transmitting apparatus, so that described transmitting apparatus is adjusted described current consultation parameter according to described parameter adjustment request.
The third aspect provides a kind of transmitting apparatus, comprising:
Send chip, be used at the current consultation parameter of signal transmission carrying, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising;
Analog to digital converter, being used for is digital signal with described signal transmission by analog signal conversion;
Optical module, be used for described signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that described receiving equipment is being converted to digital signal with described signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the described signal transmission of analog signal form.
In the possible implementation of the first, in conjunction with the third aspect:
Described transmission chip if also be used for receiving the parameter adjustment request that described receiving equipment sends, is adjusted described current consultation parameter according to described parameter adjustment request.
Fourth aspect provides a kind of receiving equipment, and described receiving equipment comprises:
Optical module, be used for receiving signal transmission from transmitting apparatus, and described signal transmission is converted to digital signal by light signal, described signal transmission is digital signal by described transmitting apparatus from analog signal conversion, and be converted to light signal from digital signal, wherein, the current consultation parameter of carrying in the described signal transmission of analog signal form, described current consultation parameter is described transmitting apparatus preemphasis or the parameter of postemphasising;
Digital to analog converter is used for described signal transmission is converted to analog signal by digital signal;
Receiving chip is for assess the signal quality of whole link according to the described signal transmission of analog signal form.
In the possible implementation of the first, in conjunction with fourth aspect:
Described receiving chip needs to adjust if also be used for described current consultation parameter, sends the parameter adjustment request to described transmitting apparatus, so that described transmitting apparatus is adjusted described current consultation parameter according to described parameter adjustment request.
The 5th aspect provides a kind of optical module, comprising:
Analog to digital converter, be used for receiving from sending chip the signal transmission of bearer negotiation parameter, with described be digital signal from the signal transmission that sends the bearer negotiation parameter that chip receives by analog signal conversion, and the digital signal after changing sends to laser driver;
Described laser driver is used for the signal of telecommunication that digital signal with described analog to digital converter conversion is converted to laser works and needs and sends to described laser, and drives described laser and the signal of telecommunication of described conversion is converted into light signal sends;
Described laser is used for according to the driving of described laser driver, the signal of telecommunication of described conversion being converted into light signal and sends;
Photodiode array is used for the light signal that receives is converted into the current signal that is carrying consultation parameter information, exports to trsanscondutance amplifier;
Described trsanscondutance amplifier is used for the current signal that is carrying consultation parameter information of described diode array output is converted into voltage signal, exports to described digital to analog converter;
Described digital to analog converter, the described voltage signal that is used for the bearer negotiation parameter that will receive from described trsanscondutance amplifier is converted to analog signal by digital signal;
Control module, be connected with described analog to digital converter, described laser driver, described laser, described photodiode array, described trsanscondutance amplifier and described digital to analog converter, be used for controlling the signal conversion process of described analog to digital converter, described laser driver, described laser, described photodiode array, described trsanscondutance amplifier and described digital to analog converter.
Embodiments of the invention provide a kind of in light transmission method, transmitting apparatus, receiving equipment and the optical module of parameter negotiation, signal by will carry current consultation parameter at transmitting apparatus is digital signal by analog signal conversion, and be converted to light signal by digital signal and be sent to receiving equipment, and at receiving equipment, the signal of the current consultation parameter of described carrying is converted to digital signal by light signal, and after being converted to analog signal by digital signal, according to the carrying after conversion the signal of telecommunication of current consultation parameter assess the signal quality of whole link.So just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic flow sheet of the method for parameter negotiation in light transmission that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind that Fig. 2 provides for embodiment of the present invention method of parameter negotiation in the light transmission;
The schematic flow sheet of the method for parameter negotiation in light transmission that Fig. 3 provides for another embodiment of the present invention;
The structural representation of a kind of transmitting apparatus that Fig. 4 provides for the embodiment of the present invention;
The structural representation of a kind of receiving equipment that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of optical module that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention provide a kind of in light transmission the method for parameter negotiation, based on transmitting apparatus one side, as shown in Figure 1, described method comprises:
S101, be digital signal with signal transmission by analog signal conversion, the current consultation parameter of carrying in described signal transmission, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising.
S102, described signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that described receiving equipment is being converted to digital signal with described signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the described signal transmission of analog signal form.
Another embodiment of the present invention provide a kind of in light transmission the method for parameter negotiation, based on receiving equipment one side, as shown in Figure 2, method comprises:
S201, receive signal transmission from transmitting apparatus, and described signal transmission is converted to digital signal by light signal, described signal transmission is digital signal by described transmitting apparatus from analog signal conversion, and be converted to light signal from digital signal, wherein, the current consultation parameter of carrying in the described signal transmission of analog signal form, described current consultation parameter is described transmitting apparatus preemphasis or the parameter of postemphasising.
S202, described signal transmission is converted to analog signal by digital signal.
S203, assess the signal quality of whole link according to the described signal transmission of analog signal form.
the embodiment of the present invention provides a kind of method that the parameter end is consulted in the light transmission, signal by will carry current consultation parameter is digital signal by analog signal conversion, and be converted to light signal by digital signal and be sent to receiving equipment, receiving equipment is converted to digital signal at the signal that will carry current consultation parameter by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the analog signal of the current consultation parameter that carries after conversion, so just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
Another embodiment of the present invention provide a kind of in light transmission the method for parameter negotiation, as shown in Figure 3, method comprises:
S301, transmitting apparatus are digital signal with signal transmission by analog signal conversion, the current consultation parameter of carrying in signal transmission, and current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising.
concrete, can realize in the following manner: inner or sending between chip and optical module analog to digital converter is set at the optical module of transmitting apparatus, signal sampling and the quantization encoding that for example can add the current consultation parameter of carrying that the A/D change-over circuit will input, be converted to digital signal, after quantization encoding, the current consultation parameter of transmitting apparatus is included in quantized data, after the signal of the current consultation parameter of carrying that will input like this is converted to digital signal pattern by the analog signal pattern, no longer comprise consultation parameter in the output waveform of transmitting apparatus, namely no longer comprise preemphasis or the information of postemphasising, embody but be coded in by quantification the consultation parameter that signal carries in the code stream of digital signal.
S302, transmitting apparatus are converted to light signal with signal transmission by digital signal.
Concrete, with the output digit signals of A/D change-over circuit after entering optical module, laser by optical module drives (Laser Driver) circuit and produces laser works required voltage signal, thereby drive laser will be carried and be sent after the signal of current consultation parameter is converted to light signal by digital signal.Optionally, above-mentioned laser can be VCSEL (Vertical Cavity Surface Emitting Laser, vertical cavity surface emitting laser).
The signal transmission that S303, transmitting apparatus will be converted to light signal is sent to receiving equipment.
S304, receiving equipment receive signal transmission from transmitting apparatus, and wherein the consultation parameter of signal transmission carrying is transmitting apparatus preemphasis or the parameter of postemphasising.
S305, receiving equipment are converted to digital signal with signal transmission by light signal.
concrete, the optical module of receiving equipment is after receiving signal transmission, the light signal of receiving is converted into current signal via the photodiode array in this optical module (Photodiode Array), this current signal is digital signal, wherein the size of electric current represents respectively " 1 " and " 0 ", then, with this current signal process trsanscondutance amplifier (Trans-impedance Amplifier, TIA) be converted into corresponding voltage signal after circuit, this voltage signal is also digital signal, this signal is exported after amplifying driving, carrying the current consultation parameter of transmitting apparatus in " 1 " and " 0 " code stream of output, be preemphasis or the information of postemphasising.
S306, receiving equipment are converted to analog signal with signal transmission by digital signal.
Concrete, can realize in the following manner: inner or between receiving chip and optical module, digital to analog converter is set at the optical module of receiving equipment, for example can add the D/A change-over circuit, the signal of the current consultation parameter of carrying of optical module input is converted to analog signal by digital signal, the waveform of this analog signal is consistent with the waveform of the signal of the current consultation parameter of carrying of transmitting apparatus, has so just restored the current preemphasis of transmitting apparatus or the information of postemphasising.
S307, receiving equipment are assessed the signal quality of whole link according to the signal transmission after changing.
Concrete, can realize by the following method:
The calculated signals of analog signal after equilibrium that receiving chip in receiving equipment receives according to receiving equipment goes out the error rate of the current bearer negotiation parameter signal of receiving, if the error rate that calculates is higher, think under current parameter combinations, the signal quality of link is low, need to readjust the parameter combinations of transceiver.
In addition, if receiving equipment is after the signal quality of completing the whole link of this assessment, if current consultation parameter needs again to adjust, send the parameter adjustment request to transmitting apparatus, so that transmitting apparatus is adjusted current consultation parameter, and again carry out S301 to S307 after adjusting parameter, until the preemphasis of transmitting apparatus or the information of postemphasising reach boundary value (for example preemphasis or the information of postemphasising reach maximum or minimum value), perhaps other termination conditions (for example reaching maximum negotiation time) finish this parameter negotiation when occurring.
Like this, just realized the parameter negotiation function in the light transmission, by carrying out A/D and D/A conversion, make originally be carried on the preemphasis in the signal of telecommunication " waveform " or postemphasis information then be carried on A/D and D/A between signal code stream in, the preemphasis of transmitting apparatus or postemphasis can not lost because of opto-electronic conversion, can be transferred to receiving equipment, thereby transceiver can normally be completed the initiator parameters negotiations process.
Embodiments of the invention provide a kind of in light transmission the method for parameter negotiation, signal by will carry current consultation parameter at transmitting apparatus is digital signal by analog signal conversion, and be converted to light signal by digital signal and be sent to receiving equipment, and be converted to digital signal at the signal that receiving equipment will carry current consultation parameter by light signal, and after being converted to analog signal by digital signal, according to the carrying after conversion the signal of telecommunication of current consultation parameter assess the signal quality of whole link.So just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
Another embodiment of the present invention provides a kind of transmitting apparatus 01, comprises, as shown in Figure 4, comprising:
Send chip 011, be used at the current consultation parameter of signal transmission carrying, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising;
Analog to digital converter 012, being used for is digital signal with signal transmission by analog signal conversion;
Optical module 013, be used for signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that receiving equipment is being converted to digital signal with signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the signal transmission of analog signal form.
Further, if receive the parameter adjustment request that receiving equipment sends:
Also be used for receiving the parameter adjustment request that receiving equipment sends if send chip 011, according to the parameter adjustment request, current consultation parameter adjusted.
In addition, it should be noted that as shown in Figure 4, analog to digital converter 012 will be near optical module 013, less to guarantee the loss between analog to digital converter 012 and optical module 013, to avoid because the loss between analog to digital converter 012 and optical module 013 affects signal quality.
embodiments of the invention provide a kind of transmitting apparatus, by implanting analog-to-digital conversion module between or transmission chip in transmitting apparatus and optical module inner at the optical module of transmitting apparatus, can be digital signal by analog signal conversion with the signal of the current consultation parameter of carrying, and be converted to light signal by digital signal and be sent to receiving equipment, thereby make receiving equipment be converted to digital signal at the signal that will carry current consultation parameter by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the analog signal of the current consultation parameter that carries after conversion, so just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
Another embodiment of the present invention provides a kind of receiving equipment 02, as shown in Figure 5, comprising:
Digital to analog converter 022 is used for signal transmission is converted to analog signal by digital signal;
Receiving chip 023 is for assess the signal quality of whole link according to the signal transmission of analog signal form.
Further, receiving chip 023 also is used for:
If current consultation parameter needs to adjust, send the parameter adjustment request to transmitting apparatus, so that transmitting apparatus is adjusted current consultation parameter according to the parameter adjustment request.
In addition, it should be noted that as shown in Figure 5, digital to analog converter 022 will be near optical module 021, less to guarantee the loss between digital to analog converter 022 and optical module 021, to avoid because the loss between digital to analog converter 022 and optical module 021 affects signal quality.
embodiments of the invention provide a kind of receiving equipment, by implanting D/A converter module between or receiving chip in receiving equipment and optical module inner at the optical module of receiving equipment, thereby make receiving equipment be converted to digital signal by light signal at the signal that will carry current consultation parameter, and after being converted to analog signal by digital signal, again assess the signal quality of whole link according to the analog signal of the current consultation parameter that carries after conversion, so just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
Further embodiment of this invention provides a kind of optical module 03, comprises analog to digital converter 031, digital to analog converter 032, photodiode array 033, trsanscondutance amplifier 034, laser driver 035, laser 036 and control module 037, as shown in Figure 6:
Analog to digital converter 031, be used for receiving from sending chip the signal transmission of bearer negotiation parameter, to be digital signal by analog signal conversion from the signal transmission that sends the bearer negotiation parameter that chip receives, and the digital signal after changing send to laser starter 035;
Digital to analog converter 032, the voltage signal that is used for the bearer negotiation parameter that will receive from trsanscondutance amplifier 034 is converted to analog signal by digital signal;
embodiments of the invention provide a kind of optical module, by implanting analog-to-digital conversion module between or transmission chip in transmitting apparatus and optical module inner at the optical module of transmitting apparatus, can be digital signal by analog signal conversion with the signal of the current consultation parameter of carrying, and be converted to light signal by digital signal and be sent to receiving equipment, and implant D/A converter module between or the receiving chip in receiving equipment and optical module inner at the optical module of receiving equipment, thereby make receiving equipment be converted to digital signal by light signal at the signal that will carry current consultation parameter, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the analog signal of the current consultation parameter that carries after conversion, so just realized supporting initiator parameters to consult under light transmission application scenarios, thereby reduced the workload of parameter testing, improved simultaneously the reliability of link.
In several embodiment that the application provides, should be understood that, disclosed method, device can be realized by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual the realization, other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit comprises, also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, the form that also can adopt hardware to add SFU software functional unit realizes.
The above-mentioned integrated unit of realizing with the form of SFU software functional unit can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the part steps of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, abbreviation ROM), the various media that can be program code stored such as random access memory (Random Access Memory is called for short RAM), magnetic disc or CD.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (9)
1. the method for a parameter negotiation in the light transmission, is characterized in that, described method comprises:
Be digital signal with signal transmission by analog signal conversion, the current consultation parameter of carrying in described signal transmission, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising;
Described signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that described receiving equipment is being converted to digital signal with described signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the described signal transmission of analog signal form.
2. method according to claim 1, is characterized in that, described method also comprises:
If receive the parameter adjustment request that described receiving equipment sends, according to described parameter adjustment request, described current consultation parameter adjusted.
3. the method for a parameter negotiation in the light transmission, is characterized in that, described method comprises:
Receive signal transmission from transmitting apparatus, and described signal transmission is converted to digital signal by light signal, described signal transmission is digital signal by described transmitting apparatus from analog signal conversion, and be converted to light signal from digital signal, wherein, the current consultation parameter of carrying in the described signal transmission of analog signal form, described current consultation parameter is described transmitting apparatus preemphasis or the parameter of postemphasising;
Described signal transmission is converted to analog signal by digital signal;
Assess the signal quality of whole link according to the described signal transmission of analog signal form.
4. method according to claim 3, is characterized in that, described method also comprises:
If described current consultation parameter needs to adjust, send the parameter adjustment request to described transmitting apparatus, so that described transmitting apparatus is adjusted described current consultation parameter according to described parameter adjustment request.
5. a transmitting apparatus, is characterized in that, comprising:
Send chip, be used at the current consultation parameter of signal transmission carrying, described current consultation parameter is transmitting apparatus preemphasis or the parameter of postemphasising;
Analog to digital converter, being used for is digital signal with described signal transmission by analog signal conversion;
Optical module, be used for described signal transmission is converted to light signal and is sent to receiving equipment by digital signal, so that described receiving equipment is being converted to digital signal with described signal transmission by light signal, and after being converted to analog signal by digital signal, assess the signal quality of whole link according to the described signal transmission of analog signal form.
6. transmitting apparatus according to claim 5 is characterized in that:
Described transmission chip if also be used for receiving the parameter adjustment request that described receiving equipment sends, is adjusted described current consultation parameter according to described parameter adjustment request.
7. a receiving equipment, is characterized in that, described receiving equipment comprises:
Optical module, be used for receiving signal transmission from transmitting apparatus, and described signal transmission is converted to digital signal by light signal, described signal transmission is digital signal by described transmitting apparatus from analog signal conversion, and be converted to light signal from digital signal, wherein, the current consultation parameter of carrying in the described signal transmission of analog signal form, described current consultation parameter is described transmitting apparatus preemphasis or the parameter of postemphasising;
Digital to analog converter is used for described signal transmission is converted to analog signal by digital signal;
Receiving chip is for assess the signal quality of whole link according to the described signal transmission of analog signal form.
8. receiving equipment according to claim 7 is characterized in that:
Described receiving chip needs to adjust if also be used for described current consultation parameter, sends the parameter adjustment request to described transmitting apparatus, so that described transmitting apparatus is adjusted described current consultation parameter according to described parameter adjustment request.
9. an optical module, is characterized in that, comprising:
Analog to digital converter, be used for receiving from sending chip the signal transmission of bearer negotiation parameter, with described be digital signal from the signal transmission that sends the bearer negotiation parameter that chip receives by analog signal conversion, and the digital signal after changing sends to laser driver;
Described laser driver is used for the signal of telecommunication that digital signal with described analog to digital converter conversion is converted to laser works and needs and sends to described laser, and drives described laser and the signal of telecommunication of described conversion is converted into light signal sends;
Described laser is used for according to the driving of described laser driver, the signal of telecommunication of described conversion being converted into light signal and sends;
Photodiode array is used for the light signal that receives is converted into the current signal that is carrying consultation parameter information, exports to trsanscondutance amplifier;
Described trsanscondutance amplifier is used for the current signal that is carrying consultation parameter information of described diode array output is converted into voltage signal, exports to described digital to analog converter;
Described digital to analog converter, the described voltage signal that is used for the bearer negotiation parameter that will receive from described trsanscondutance amplifier is converted to analog signal by digital signal;
Control module, be connected with described analog to digital converter, described laser driver, described laser, described photodiode array, described trsanscondutance amplifier and described digital to analog converter, be used for controlling the signal conversion process of described analog to digital converter, described laser driver, described laser, described photodiode array, described trsanscondutance amplifier and described digital to analog converter.
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| WO2016070585A1 (en) * | 2014-11-05 | 2016-05-12 | 中兴通讯股份有限公司 | Optical link fault locating method, device, processing component and storage medium |
| CN109818886A (en) * | 2018-12-07 | 2019-05-28 | 华为技术有限公司 | A kind of method and device configuring balance parameters |
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