[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN105359433A - Communication method, device and system - Google Patents

Communication method, device and system Download PDF

Info

Publication number
CN105359433A
CN105359433A CN201480001088.7A CN201480001088A CN105359433A CN 105359433 A CN105359433 A CN 105359433A CN 201480001088 A CN201480001088 A CN 201480001088A CN 105359433 A CN105359433 A CN 105359433A
Authority
CN
China
Prior art keywords
pam
bit
ranks
onu
exponent numbers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201480001088.7A
Other languages
Chinese (zh)
Other versions
CN105359433B (en
Inventor
叶志成
李胜平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of CN105359433A publication Critical patent/CN105359433A/en
Application granted granted Critical
Publication of CN105359433B publication Critical patent/CN105359433B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25Arrangements specific to fibre transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

Disclosed are a communication method, device and system, the communication method comprising: determining that a pulse amplitude modulation (PAM) order is the p-th power of 2, and 1<=P<=m; feeding back the PAM order to an ONU; extending the PAM order into a PAM-N order, and employing the extended PAM-N order to communicate with the ONU, N being the m-th power of 2, and m>=2. The communication method, device and system of the present invention realize continuous modulation of different downlink PAM orders, thus achieving different ONU adaptive link rate levels.

Description

A kind of communication means, apparatus and system Technical field
The present invention relates to the communications field, more particularly to a kind of communication means, apparatus and system.
Background technology
With FTTx (Fiber To The x, intelligent acess x, such as FTTH represent fiber entering household, FTTB, optical fiber enters building) large scale deployment, the bandwidth demand of soft exchange is increasing, at present Soft exchange main flow uses PON (Passive Optical Network, EPON) technology, PON Technology is a kind of point-to-multipoint passive optical network.One PON is installed on including one The OLT (Optical Line Terminal, optical line terminal) of console for centralized control, and it is a collection of supporting The ONU (Optical Network Unit, optical network unit) for being installed on customer site or ONT (Optical Network Terminal, ONT Optical Network Terminal).ODN between OLT and ONU (Optical Distribution Network, Optical Distribution Network) contains optical fiber and passive optical splitters Or coupler.
PON is due to eliminating the active equipment between local side and user terminal, so that safeguarding letter Single, reliability is high, cost is low, and can save fiber resource, is following FTTH (Fiber To The Home, fiber entering household) primary solutions.
Various PON technologies all co-exist at this stage, EPON (Ethernet Passive Optical Network, Ethernet passive optical network), 10G-EPON (10Gigabit EPON, 10 gigabits Ethernet passive optical network), GPON (Gigabit Passive Optical Network, gigabit without Source optical-fiber network), 10G-GPON (10Gigabit PON, 10 gigabit passive optical networks), 40G-TWDM PON (40Gigabit Time Wavelength Division Multiplex PON, Gigabit time-division Wave division multiplexing passive optical network).Link total bandwidth is from 1G to 10G, or even 40G. According to user bandwidth demand analysis, current bandwidth can meet the need of user's long period Ask.In the case of total downlink bandwidth is 10G or 40G, each user is not necessarily to reach 10G More than.
Pulse amplitude modulation (Pulse Amplitude Modulation, PAM) is the width of pulse carrier A kind of modulation system changed with baseband signal is spent, can form multistage according to different bit combinations PAM is modulated.If descending to be realized different PAM exponent numbers modulation, there can be downlink burst, it is impossible to Realize.
The content of the invention
Embodiments of the invention provide one kind and realize communication means, apparatus and system, if for solving The problem of different PAM exponent numbers are modulated is realized descending.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that:
In a first aspect, a kind of communication means, including determine that pulse amplitude modulation PAM exponent numbers F, F are 2 P powers, 1≤P≤m;The pulse amplitude modulation PAM exponent numbers are fed back into the ONU; The pulse amplitude modulation PAM exponent numbers are expanded into PAM N exponent numbers, after the extension PAM N exponent numbers communicate with the ONU, wherein, the N is 2 m powers, m >=2.
With reference in a first aspect, in the first possible implementation of first aspect, methods described is also The registration that PAM N ranks coding realizes ONU is expanded to including being encoded with PAM2 ranks.
With reference to the first possible implementation of first aspect, in second of possible implementation In, the PAM2 ranks coding expands to PAM N ranks coding, specifically includes in data flow every 1 Bit expanded is that the 2nd bit after m bits, and extension is identical with the 1st bit to m bits.
It is described to adjust the impulse amplitude with reference in a first aspect, in the third possible implementation PAM exponent numbers processed expand to PAM-N exponent numbers, and it is m to specifically include every P bit expandeds in data flow The bit of pth+1 after bit, and extension is identical with the 1st bit to m bits, 1≤p≤m.
Second aspect, a kind of method of communication, including receive that the OLT sends with PAM-N ranks The data of modulation, wherein, the m powers that N is 2, wherein m >=2;Adjusted with the impulse amplitude PAM exponent numbers processed demodulate the number with PAM-N contrasts sent by the OLT for 2 P powers According to wherein 1≤p≤m.
With reference to second aspect, in the first possible implementation of second aspect, the ONU The coding registration of PAM N ranks is expanded to PAM2 ranks coding, wherein, N is 2 m powers, its Middle m >=2.
With reference to the first possible implementation of second aspect, in second of possible implementation In, it is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m bits It is identical with the 1st bit.
With reference to second aspect, in the third possible implementation, methods described also includes will be whole Data flow is divided into multiple sub-data flows in units of m, and the pth+1 abandoned in each sub-data flow compares Spy reformulates new data flow, for the ONU using PAM exponent numbers as 2 to m bits P powers be demodulated.
The third aspect, a kind of communicator, including processing unit, for determining pulse amplitude modulation PAM Exponent number is 2 P powers, 1≤P≤m1 integer;Transmitting element, for the impulse amplitude to be adjusted PAM exponent numbers processed feed back to the ONU;The processing unit, is additionally operable to adjust the impulse amplitude PAM exponent numbers processed expand to PAM-N exponent numbers, using the PAM-N exponent numbers after the extension with it is described ONU communicates, wherein, the N is 2 m powers, m >=2.
With reference to the third aspect, in the first possible implementation of the third aspect, the processing is single Member, which is additionally operable to encode with PAM2 ranks, expands to the registration that PAM N ranks coding realizes ONU.
With reference to the first possible implementation of the third aspect, in second of possible implementation In, it is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m bits It is identical with the 1st bit.
With reference to the third aspect, in the third possible implementation, it will expand in data flow per P bits Open up as m bits, and the bit of pth+1 after extension is identical with the 1st bit to m bits, 1 ≤p≤m。
Fourth aspect, a kind of communicator, including receiving unit, send for receiving the OLT With the data of PAM-N contrasts, wherein, N is 2 m powers, wherein m >=2;Processing unit, For what is sent using the pulse amplitude modulation PAM exponent numbers as 2 P powers demodulation by the OLT With the data of PAM-N contrasts, wherein 1≤p≤m.
With reference to fourth aspect, in the first possible implementation of fourth aspect, the processing is single Member is additionally operable to expand to the coding registration of PAM N ranks with PAM2 ranks coding, wherein, N is 2 m Power, wherein m are the integer more than or equal to 2.
With reference to the first possible implementation of fourth aspect, in second of possible implementation In, the processing unit specifically for by every 1 bit expanded in data flow be m bits, and extension after The 2nd bit it is identical with the 1st bit to m bits.
With reference to fourth aspect, in the third possible implementation, the processing unit be additionally operable to by Whole data flow is divided into multiple sub-data flows in units of m, abandons the pth+1 in each sub-data flow Bit reformulates new data flow to m bits, for the ONU using PAM exponent numbers as 2 p powers are demodulated.
5th aspect, a kind of optical line terminal OLT, including processor, the processor are used to perform Method as described in first aspect and first aspect any one.
6th aspect, a kind of optical network unit ONU, including processor, the processor are used to perform Method as described in second aspect and second aspect any one.
7th aspect, a kind of passive optical network PON, including OLT and ONU, wherein, OLT Including the OLT as described in terms of the 5th, or ONU includes the ONU as described in terms of the 6th.
By the communication means of the present invention, apparatus and system, descending PAM different ranks can be achieved and connect Continuous modulation, realizes different ONU adaptive links speed grades.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be right The accompanying drawing used required in embodiment description is briefly described, it should be apparent that, in describing below Accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, not On the premise of paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is PON system group network structural representation;
Fig. 2 is a kind of OLT provided in an embodiment of the present invention and ONU interaction diagrams;
Fig. 3 is the multistage flexible PON system architecture signals of PAM provided in an embodiment of the present invention Figure;
Fig. 4 is a kind of signal node composition of use PAM-8 codings provided in an embodiment of the present invention;
Fig. 5 a kind of forms pseudo- PAM-4 coding to be provided in an embodiment of the present invention by extended coding Signal node composition;
Fig. 6 a kind of forms pseudo- PAM-2 coding to be provided in an embodiment of the present invention by extended coding Signal node composition;
Fig. 7 is a kind of downlink data stream encryption extended flow journey schematic diagram provided in an embodiment of the present invention;
Fig. 8 a realize PAM-8 for one kind provided in an embodiment of the present invention using programmable array FPGA Encode the schematic diagram of extension;
Fig. 8 b realize PAM-4 for one kind provided in an embodiment of the present invention using programmable array FPGA Coding expands to the schematic diagram of PAM-8 codings;
Fig. 8 c realize PAM-2 for one kind provided in an embodiment of the present invention using programmable array FPGA Coding expands to the schematic diagram of PAM-8 codings;
Fig. 9 is a kind of optical line terminal OLT media access control MAC provided in an embodiment of the present invention Inside modules make the schematic diagram of the transmission coding extension of adaptive PAM exponent numbers;
Figure 10 is a kind of PAM of the optical network unit ONU provided in an embodiment of the present invention according to feedback Exponent number carries out the schematic diagram of adaptive demodulation;
Figure 11 is a kind of structural representation of device provided in an embodiment of the present invention;
Figure 12 is the structural representation of another device provided in an embodiment of the present invention;
Figure 13 is a kind of OLT structural representation provided in an embodiment of the present invention;
Figure 14 is a kind of ONU structural representation provided in an 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 entered Row is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having There is the every other embodiment made and obtained under the premise of creative work, belong to what the present invention was protected Scope.
Embodiment one,
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention not office Be limited to this, any one skilled in the art the invention discloses technical scope in, can Change or replacement are readily occurred in, should be all included within the scope of the present invention.Therefore, it is of the invention Protection domain described should be defined by scope of the claims.
As shown in figure 1, EPON (Passive Optical Network, PON) is by office side Optical line terminal (Optical Line Terminal, OLT), the optical network unit (Optical of user side Network Unit, ONU) or ONT Optical Network Terminal (Optical Network Terminal, ONT) And Optical Distribution Network (Optical Distribute Network, ODN) composition.At present, have Representational PON technologies are GPON (Gigabit-Capable Passive Optical Network, thousand Million EPONs), EPON (Ethernet Passive Optical Network, Ethernet passive light Network), 10G-GPON (being referred to as XG-PON), 10G-EPON.
OLT provides Network Side Interface for PON system, connects one or more ODN.ONU is PON system provides user side interface, is connected with ODN.If ONU directly provides user port The ethernet user port of function, such as PC (Personal Computer, PC) online, Then it is referred to as ONT.Without specified otherwise, the ONU systems being mentioned below refer to ONU and ONT.ODN The network being made up of optical fiber and passive optical splitters part, for connecting OLT device and ONU equipment, For distributing or being multiplexed the data-signal between OLT and ONU.In PON system, from OLT It is referred to as descending to ONU;Conversely, to be up from ONU to OLT.
Embodiment one
The embodiment of the present invention discloses a kind of method of communication, as shown in Fig. 2 including:
S200:OLT determines that pulse amplitude modulation PAM exponent numbers are F ranks, by the PAM exponent numbers Send to ONU, F is 2 P powers, p is the integer more than or equal to 1, and less than or equal to m;
S202:The PAM exponent numbers are that to expand to PAM exponent numbers be N ranks to F ranks by OLT, using PAM The modulation of N exponent numbers communicates with the ONU, wherein, N is 2 m powers, and m is more than or equal to 2 Integer;
S204:The ONU receives the data with PAM N contrasts that the OLT is sent, with institute State pulse amplitude modulation PAM exponent numbers for F ranks demodulate by the OLT send with PAM N contrasts The data of system.
Alternatively, the OLT determines pulse amplitude modulation PAM exponent numbers, can pass through following steps Realize:
ONU detects received optical power, to optical line terminal OLT feedback reception luminous power;
OLT is according to ONU received optical powers, and it is F to determine PAM exponent numbers, wherein, F is 2 p Power, p is the integer more than or equal to 1, and less than or equal to m;
Wherein, according to ONU received optical powers, PAM exponent numbers are determined, can be prestored by OLT Luminous power and PAM exponent number mapping tables are stored up, is got by enquiry form and receives light with ONU The corresponding PAM exponent numbers of power;Can also manually it be entered by manual input commands row, network management system Row configuration;Can also here it be repeated no more using other schemes disclosed in prior art.
The PAM exponent numbers determined are fed back to ONU by OLT.
Alternatively, the OLT determines pulse amplitude modulation PAM exponent numbers, can also pass through following step It is rapid to realize:
The SNR (Signal Noise Ratio, signal to noise ratio) of ONU detection channels, to optical line terminal OLT feeds back the SNR;
OLT according to the SNR, determine PAM exponent numbers be F, F be 2 p powers, p be more than Integer equal to 1, and less than or equal to m;
Wherein, according to the SNR of passage, PAM exponent numbers are determined, SNR can be pre-stored by OLT With PAM exponent number mapping tables, corresponding PAM exponent numbers are obtained by enquiry form;It can also lead to Cross and be manually entered order line, network management system manually to be configured;It can also be disclosed using prior art Other schemes, repeat no more here.
The PAM exponent numbers determined are fed back to ONU by OLT.
Alternatively, methods described also includes:
OLT and ONU realizes that ONU registrations are reached the standard grade by extended coding.Wherein, the extension is compiled Code can be by PAM-2 contrast systems by extended coding be PAM-N contrast systems, N be 2 m Power, m is the integer more than or equal to 2.
Specifically, PAM-2 is expanded into PAM-N codings, including:
It is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m ratios It is special identical with the 1st bit.
Alternatively, it is described that the pulse amplitude modulation PAM exponent numbers are expanded into PAM-N exponent numbers, tool Body includes:
To be the bit of pth+1 after m bits, and extension per P bit expandeds in data flow to m Bit is identical with the 1st bit, 1≤p≤m.
Alternatively, demodulated by 2 P powers of the pulse amplitude modulation PAM exponent numbers by the OLT The data with PAM-N contrasts sent, are specifically included:
By whole data flow in units of m, it is divided into multiple sub-data flows, abandons in each sub-data flow The bit of pth+1 to m bits, new data flow is reformulated, for the ONU with PAM Exponent number is demodulated for F.
The embodiment of the present invention is further illustrated with reference to specific application scenarios, by taking N=8 as an example Illustrate.
PON system descending of the present invention is modulated using the multistage PAM of unicast, such as PAM-2 ranks, PAM-4 ranks, PAM-8 ranks etc., by TDMA (Time Division Multiplexing Access, Time division multiplexing access) form, meet ONU link circuit self-adapting different brackets rate requirements.
As shown in figure 3, by taking 10G photoelectric devices as an example, passing through PAM-2 ranks, PAM-4 ranks, PAM-8 The different modulating such as rank exponent number can realize the corresponding link level speed of descending 10G, 20G, 30G (PAM-2 ranks correspondence 10G, PAM-4 ranks correspondence 20G, PAM-8 ranks correspondence 30G).The present invention PON has self-adaptation flexible characteristic, can be according to ONU received optical power Adaptive matchings PAM exponent numbers, dynamic adjustment modulation format, realize each ONU links different brackets transmission rate.
Due to directly being modulated descending using different PAM exponent numbers, descending can not realize continuously can be caused Pattern, and burst mode is in descending more difficult implementation.How on the basis of descending continuous mode is ensured, adopt It is the key solved the problems, such as that elastic power budget is realized with different PAM order of modulation.We by OLT sending sides carry out coding extension, and descending different PAM exponent numbers can be achieved and continuously transmit.
As descending 30G, directly it can be modulated using PAM-8.Coding is not required to do coding extension, often 3 bits, one level of formation.As shown in Figure 4.
, need to be using PAM-4 modulation, if without any processing, descending need as descending 20G Constantly switch between PAM-4, PAM-8, cause downlink burst.The present invention is encoded by innovating Extension, 111,101,010,000 are extended to by the 11 of PAM-4,10,01,00 respectively.From And form the pseudo- PAM-4 modulated signals that essence is PAM-8.As shown in Figure 5.
Similarly, as descending 10G, it need to be modulated using PAM-2, if without any processing, It is then descending constantly to switch between PAM-2, PAM-8, cause downlink burst.Compiled by innovating Code extension, 111,000 are extended to by the 1 of PAM-2,0 respectively.It is PAM-8 so as to form essence Pseudo- PAM-2 modulated signals.As shown in Figure 6.
Coding extension, can be sent by descending continuous P AM-8 forms more than, realized and produced not Same PAM exponent numbers, i.e. PAM-8, PAM-4, PAM-2.So as to real descending different rates (PAM-8 correspondence 30G, PAM-4 correspondence 20G, PAM-2 correspondences 10G) TDMA is sent, ONU receiving sides carry out adaptive decoding according to PAM exponent numbers.Meanwhile, above specific coding extension can Maximum extinction ratio state under different PAM order of modulation is realized, to greatest extent lifting system performance.
Further, OLT ends extended coding can pass through FPGA (Field Programmable Gate Array, field programmable gate array) module realization, naturally it is also possible to use special integrated chip (Application Specific Integrated Circuit, ASIC), can also use System on Chip/SoC (System on Chip, SoC), can also using central processing unit (Central Processor Unit, CPU), network processing unit (Network Processor, NP) can also be used, number can also be used Word signal processing circuit (Digital Signal Processor, DSP), can also use microcontroller (Micro Controller Unit, MCU), can also use programmable controller (Programmable Logic Device, PLD) or other integrated chips.It is illustrated in figure 7 downlink data stream encryption expansion Open up schematic flow sheet.
For realizing schematic diagram as shown in Fig. 8 a~Fig. 8 c inside different PAM-N order of modulation.It is first right Descending serial data stream Data carries out serioparallel exchange, according to OLT MAC (Media Access Control, medium education) the affiliated PAM exponent numbers value of feedback data stream, to parallel after conversion Data flow carries out adaptive coding extension.
As shown in Figure 8 a, coding extension is from PAM-8 to PAM-8, parallel data stream after coding extension Keep constant;
As shown in Figure 8 b, coding extension is from PAM-4 to PAM-8, and parallel data stream encryption extension is every 2bit expands to 3bit, and 3bit is identical with 1bit data;
As shown in Figure 8 c, coding extension is from PAM-2 to PAM-8, and parallel data stream encryption extension is every 1bit expands to 3bit, and 2bit, and 3bit is identical with 1bit data.
Parallel data stream forms new downlink data through parallel-serial conversion DeSerdes again after coding extension Data is flowed, afterwards again through 3Bit DAC (Digital Analog Convert, digital analog converter) formation PAM-8 signals, send through laser.
As shown in figure 9, doing the transmission coding extension of adaptive PAM exponent numbers inside OLT MAC.
As shown in Figure 10, the demodulation of ONU receiving terminals is by two kinds of implementation methods, and the first is embodiment three Being realized by FPGA described in kind.Second of implementation method is by high-speed ADC (Analog Digital Convert, analog-digital converter) multistage PAM codings are realized, fed back by ONU MAC Dynamic modulation exponent number controls adaptive decoding ADC sample frequencys.When feedback modulation exponent number is PAM-8 When, ADC sample frequencys are adaptively set to 30GHz;When feedback modulation exponent number is PAM-4, ADC sample frequencys are adaptively set to 20GHz;When feedback modulation exponent number is PAM-2, ADC Sample frequency is adaptively set to 10GHz.It is that difference can be achieved by the adaptively sampled frequencies of ADC PAM exponent number adaptive decodings.
Embodiment two
The embodiment of the invention also discloses a kind of communicator, as shown in figure 11, including:
Processing unit 110, for determining that pulse amplitude modulation PAM exponent numbers are F, F is p time of 2 Side, 1≤p≤m;The PAM exponent numbers F for being additionally operable to determine this expands to PAM N contrast systems;
Transmitting element 120, for being that F feeds back to optical network unit ONU by the PAM exponent numbers; Communicated with the PAM N rank modulation formats after extension with ONU.
Alternatively, the processing unit 110 is additionally operable to expand to PAM N ranks with PAM2 ranks coding Coding realizes ONU registration.Wherein, the processing unit 110 is additionally operable to encode with PAM2 ranks The registration that PAM N ranks coding realizes ONU is expanded to, specifically includes and expands every 1 bit in data flow Open up as m bits, and the 2nd bit after extension is identical with the 1st bit to m bits.
The processing unit 110 is additionally operable to expand to the pulse amplitude modulation PAM exponent numbers F PAM-N exponent numbers, will be specifically included after will in data flow per P bit expandeds being m bits, and extension The bit of pth+1 is identical with the 1st bit to m bits, 1≤p≤m.
The communicator can be FPGA (Field Programmable Gate on physical entity Array field programmable gate arrays) module realize can certainly use special integrated chip (Application Specific Integrated Circuit, ASIC), can also use System on Chip/SoC (System on Chip, SoC), can also using central processing unit (Central Processor Unit, CPU), network processing unit (Network Processor, NP) can also be used, number can also be used Word signal processing circuit (Digital Signal Processor, DSP), can also use microcontroller (Micro Controller Unit, MCU), can also use programmable controller (Programmable Logic Device, PLD) or other integrated chips.
Embodiment three
A kind of communicator is also disclosed in the embodiment of the present invention, as shown in figure 12, including:
Receiving unit 122, the pulse amplitude modulation PAM for receiving optical line terminal OLT transmission Exponent number is F, and wherein F is 2 P powers, and wherein p is more than or equal to 1, and less than or equal to m Integer;The data with PAM-N contrasts that the OLT is sent are received, wherein, N is 2 M powers, wherein m are the integer more than or equal to 2;
Processing unit 124, for the demodulation by F of the pulse amplitude modulation PAM exponent numbers by described The data with PAM-N contrasts that OLT is sent, wherein p is the integer more than or equal to 1.
Alternatively, the processing unit 124 is additionally operable to expand to PAM N ranks with PAM2 ranks coding Coding registration, wherein, N is 2 m powers, and wherein m is the integer more than or equal to 2.Specific bag It is the 2nd after m bits, and extension by every 1 bit expanded in data flow to include the processing unit 124 Bit is identical with the 1st bit to m bits.
Alternatively, the processing unit 124 is additionally operable to whole data flow in units of m, is divided into many Individual sub-data flow, abandons the bit of pth+1 in each sub-data flow to m bits, reformulates new Data flow, be demodulated for the ONU using PAM exponent numbers as F.
The communicator can be FPGA (Field Programmable Gate on physical entity Array, field programmable gate array) module realization, naturally it is also possible to use special integrated chip (Application Specific Integrated Circuit, ASIC), can also use System on Chip/SoC (System on Chip, SoC), can also using central processing unit (Central Processor Unit, CPU), network processing unit (Network Processor, NP) can also be used, number can also be used Word signal processing circuit (Digital Signal Processor, DSP), can also use microcontroller (Micro Controller Unit, MCU), can also use programmable controller (Programmable Logic Device, PLD) or other integrated chips.
Example IV
A kind of optical line terminal OLT is also disclosed in the embodiment of the present invention, as shown in figure 13, the OLT Including processor 130, optical module 132, digital analog converter 134, analog-digital converter 136, wherein, The processor includes the communicator as described in embodiment two.
It is as shown in figure 14, described the embodiment of the invention also discloses a kind of optical network unit ONU ONU include processor 140, optical module 142, digital analog converter 144, analog-digital converter 146, Wherein, the processor includes the communicator as described in embodiment three.
A kind of passive optical network PON is also disclosed in the embodiment of the present invention, as shown in figure 1, including light Road terminal OLT and optical network unit ONU, the OLT are connected to by Optical Distribution Network ODN A few ONU, wherein, optical line terminal and optical network unit are used to perform as described in embodiment one Method.
By communication means disclosed by the invention, apparatus and system, descending PAM not same orders can be achieved Number continuous modulation, realizes different ONU adaptive links speed grades.
Through the above description of the embodiments, it is apparent to those skilled in the art that The present invention can be realized with hardware, or firmware is realized, or combinations thereof mode is realized.When using When software is realized, above-mentioned functions can be stored in computer-readable medium or as computer-readable One or more instructions or code on medium are transmitted.Computer-readable medium is deposited including computer Storage media and communication media, wherein communication media include being easy to transmit to another place from a place Any medium of computer program.Storage medium can be any usable medium that computer can be accessed. As example but it is not limited to:Computer-readable medium can include RAM (Random Access Memory, random access memory), ROM (Read Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable Read Only Memory, electric erazable programmable is only Read memory), CD-ROM (Compact Disc Read Only Memory, i.e. read-only optical disc) Or other optical disc storages, magnetic disk storage medium or other magnetic storage apparatus or can be used in carry Storage with instruction or data structure form desired program code and can be by computer access Any other medium.In addition.Any connection can be suitably turn into computer-readable medium.For example, If software be using coaxial cable, optical fiber cable, twisted-pair feeder, DSL (Digital Subscriber Line, Digital subscriber line) or such as wireless technology of infrared ray, radio and microwave etc from website, What server or other remote sources were transmitted, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL Or the wireless technology of such as infrared ray, wireless and microwave etc be included in belonging to medium it is fixing in. As used in the present invention, plate and dish include CD (Compact Disc, compress laser disc), laser disc, Laser disc, DVD dish (Digital Versatile Disc, digital universal light), floppy disk and Blu-ray Disc, The replicate data of the usual magnetic of which disk, and dish is then with laser come optical replicate data.Group above Conjunction should also be as being included within the protection domain of computer-readable medium.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention not office Be limited to this, any one skilled in the art the invention discloses technical scope in, can Change or replacement are readily occurred in, should be all included within the scope of the present invention.Therefore, it is of the invention Protection domain described should be defined by scope of the claims.

Claims (21)

  1. A kind of communication means, it is characterised in that including:
    It is F to determine pulse amplitude modulation PAM exponent numbers, wherein, F is 2 P powers, 1≤P≤m; The pulse amplitude modulation PAM exponent numbers F is fed back into optical network unit ONU;
    The pulse amplitude modulation PAM exponent numbers F is expanded into PAM exponent numbers for N ranks, using institute Expansion PAM N exponent numbers are stated to communicate with the ONU, wherein, the N is 2 m powers, m >=2.
  2. According to the method described in claim 1, it is characterised in that methods described also includes with PAM 2 ranks coding expands to the registration that PAM N ranks coding realizes ONU.
  3. Method according to claim 2, it is characterised in that the PAM2 ranks coding expands Open up and encoded for PAM N ranks, specifically included:
    It is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m ratios It is special identical with the 1st bit.
  4. According to the method described in claim 1, it is characterised in that described by the impulse amplitude Modulation PAM exponent numbers F expands to PAM exponent numbers for N ranks, specifically includes:
    To be the bit of pth+1 after m bits, and extension per P bit expandeds in data flow to m Bit is identical with the 1st bit, 1≤p≤m.
  5. A kind of method of communication, it is characterised in that including:
    The data with PAM N contrasts that optical line terminal OLT is sent are received, wherein, N is 2 M powers, wherein m >=2;
    By F of pulse amplitude modulation PAM exponent numbers demodulation by the OLT send with PAM N ranks The data of modulation, wherein, F is 2 p powers, 1≤p≤m.
  6. According to the method described in claim 1, it is characterised in that methods described also includes:
    Optical line terminal ONU expands to the coding registration of PAM N ranks with PAM2 ranks coding, wherein, N is 2 m powers, wherein m >=2.
  7. Method according to claim 6, it is characterised in that the PAM2 ranks coding expands Open up and encoded for PAM N ranks, specifically included:
    It is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m ratios It is special identical with the 1st bit.
  8. Method according to claim 5, it is characterised in that methods described also includes:
    By whole data flow in units of m, it is divided into multiple sub-data flows, abandons in each sub-data flow The bit of pth+1 to m bits, new data flow is formed, for the ONU with PAM ranks Number is demodulated for F ranks.
  9. A kind of communicator, it is characterised in that described device includes:
    Processing unit, for determining that pulse amplitude modulation PAM exponent numbers are F ranks, F is P time of 2 Side, 1≤P≤m integer;
    Transmitting element, for being that F ranks feed back to optical-fiber network by the pulse amplitude modulation PAM exponent numbers Unit ONU;
    The processing unit, is additionally operable to the pulse amplitude modulation PAM exponent numbers F expanding to PAM N exponent numbers, are communicated using the PAM N exponent numbers after the extension with the ONU, wherein, the N For 2 m powers, m >=2.
  10. Device according to claim 9, it is characterised in that the processing unit is additionally operable to Encoded with PAM2 ranks and expand to the registration that PAM N ranks coding realizes ONU.
  11. Device according to claim 10, it is characterised in that the processing unit is also used The registration that PAM N ranks coding realizes ONU is expanded in being encoded with PAM2 ranks, is specifically included:
    It is the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m ratios It is special identical with the 1st bit.
  12. Device according to claim 9, it is characterised in that the processing unit is additionally operable to The pulse amplitude modulation PAM exponent numbers F is expanded into PAM N exponent numbers, specifically included:
    To be the bit of pth+1 after m bits, and extension per P bit expandeds in data flow to m Bit is identical with the 1st bit, 1≤p≤m.
  13. A kind of communicator, it is characterised in that described device includes:
    Receiving unit, the data with PAM N contrasts for receiving optical line terminal OLT transmission, Wherein, N is 2 m powers, wherein m >=2;
    Processing unit, for the demodulation by F of the pulse amplitude modulation PAM exponent numbers by the OLT The data with PAM N contrasts sent, wherein, F is 2 p powers, 1≤p≤m.
  14. Device according to claim 13, it is characterised in that the processing unit is also used Registered in expanding to PAM N ranks coding with PAM2 ranks coding, wherein, N is 2 m powers, Wherein m >=2.
  15. Device according to claim 14, it is characterised in that the processing unit is specific For being the 2nd bit after m bits, and extension by every 1 bit expanded in data flow to m bits It is identical with the 1st bit.
  16. Device according to claim 13, it is characterised in that the processing unit is also used In whole data flow in units of m, to be divided into multiple sub-data flows, abandon in each sub-data flow The bit of pth+1 forms new data flow, for the ONU with PAM exponent numbers to m bits It is demodulated for F.
  17. A kind of communicator, including processor, it is characterised in that the processor is used to perform Method as described in Claims 1 to 4 any one.
  18. A kind of communicator, including processor, it is characterised in that the processor is used to perform Method as described in claim 5~8 any one.
  19. A kind of optical line terminal OLT, including processor and optical module, it is characterised in that described Processor includes the device as described in claim 9~12 any one.
  20. A kind of optical network unit ONU, including processor and optical module, it is characterised in that described Processor includes the device as described in claim 13~16 any one.
  21. A kind of passive optical network PON, including optical line terminal OLT and optical network unit ONU, Characterized in that, the OLT includes optical line terminal as claimed in claim 19 or described ONU includes optical network unit as claimed in claim 20.
CN201480001088.7A 2014-05-16 2014-05-16 A kind of communication means, apparatus and system Active CN105359433B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/077647 WO2015172375A1 (en) 2014-05-16 2014-05-16 Communication method, device and system

Publications (2)

Publication Number Publication Date
CN105359433A true CN105359433A (en) 2016-02-24
CN105359433B CN105359433B (en) 2017-11-17

Family

ID=54479194

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201480001088.7A Active CN105359433B (en) 2014-05-16 2014-05-16 A kind of communication means, apparatus and system

Country Status (2)

Country Link
CN (1) CN105359433B (en)
WO (1) WO2015172375A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870233A (en) * 2017-07-27 2020-03-06 华为技术有限公司 Data processing method, optical line terminal, optical network unit and system
CN112737695A (en) * 2020-12-04 2021-04-30 东南大学 Adaptive symbol set design method based on generalized spatial modulation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10212010B2 (en) 2017-07-13 2019-02-19 Zte Corporation Unequally spaced pulse amplitude modulation scheme
CN112564851B (en) * 2019-09-10 2022-03-08 华为技术有限公司 Method, device and computer readable storage medium for Ethernet link rate switching

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08130528A (en) * 1994-11-01 1996-05-21 Matsushita Electric Ind Co Ltd Radio equipment
EP1401129A2 (en) * 2002-09-23 2004-03-24 Agere Systems Inc. Pulse shaping of optical duobinary signals
CN1890913A (en) * 2003-12-08 2007-01-03 硅谷数模半导体有限公司 Signaling and coding methods and apparatus for long-range 10 and 100 Mbps Ethernet transmission
CN1902832A (en) * 2004-01-02 2007-01-24 国际商业机器公司 Robust non-coherent receiver for pam-ppm signals
CN101490986A (en) * 2006-07-20 2009-07-22 卢森特技术有限公司 Method and apparatus for the generation and detection of optical differential varied-multilevel phase-shift keying with pulse amplitude modulation (odvmpsk/pam) signals
US20100014559A1 (en) * 2008-07-18 2010-01-21 Harris Corporation System and method for communicating data using constant envelope orthogonal walsh modulation with channelization
CN101848061A (en) * 2010-05-13 2010-09-29 清华大学 Constellation diagram limited extended code modulation method, demodulation and decoding method and system thereof
CN102244556A (en) * 2010-05-11 2011-11-16 清华大学 Construction method of multi-dimensional constellation graph, and method and system for code modulation and demodulation and decoding
CN102447981A (en) * 2010-08-20 2012-05-09 美国博通公司 Systems and methods for providing an upstream rate in a cost effective manner in a 10GEPON
CN102571681A (en) * 2010-12-30 2012-07-11 中兴通讯股份有限公司 Information sending method and information sending device for system broadcast channel in wireless communication system
CN103493454A (en) * 2011-04-14 2014-01-01 阿尔卡特朗讯 Method and apparatus for implementing high-order modulation schemes using low-order modulators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031831A1 (en) * 2009-09-09 2011-03-17 Broadcom Corporation Ethernet passive optical network over coaxial (epoc)
CN103840882B (en) * 2012-11-21 2018-09-28 中兴通讯股份有限公司 The transmission of fiber optic network, reception, communication system and signal modulator approach

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08130528A (en) * 1994-11-01 1996-05-21 Matsushita Electric Ind Co Ltd Radio equipment
EP1401129A2 (en) * 2002-09-23 2004-03-24 Agere Systems Inc. Pulse shaping of optical duobinary signals
CN1890913A (en) * 2003-12-08 2007-01-03 硅谷数模半导体有限公司 Signaling and coding methods and apparatus for long-range 10 and 100 Mbps Ethernet transmission
CN1902832A (en) * 2004-01-02 2007-01-24 国际商业机器公司 Robust non-coherent receiver for pam-ppm signals
CN101490986A (en) * 2006-07-20 2009-07-22 卢森特技术有限公司 Method and apparatus for the generation and detection of optical differential varied-multilevel phase-shift keying with pulse amplitude modulation (odvmpsk/pam) signals
US20100014559A1 (en) * 2008-07-18 2010-01-21 Harris Corporation System and method for communicating data using constant envelope orthogonal walsh modulation with channelization
CN102244556A (en) * 2010-05-11 2011-11-16 清华大学 Construction method of multi-dimensional constellation graph, and method and system for code modulation and demodulation and decoding
CN101848061A (en) * 2010-05-13 2010-09-29 清华大学 Constellation diagram limited extended code modulation method, demodulation and decoding method and system thereof
CN102447981A (en) * 2010-08-20 2012-05-09 美国博通公司 Systems and methods for providing an upstream rate in a cost effective manner in a 10GEPON
CN102571681A (en) * 2010-12-30 2012-07-11 中兴通讯股份有限公司 Information sending method and information sending device for system broadcast channel in wireless communication system
CN103493454A (en) * 2011-04-14 2014-01-01 阿尔卡特朗讯 Method and apparatus for implementing high-order modulation schemes using low-order modulators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870233A (en) * 2017-07-27 2020-03-06 华为技术有限公司 Data processing method, optical line terminal, optical network unit and system
CN110870233B (en) * 2017-07-27 2021-02-23 华为技术有限公司 Data processing method, optical line terminal, optical network unit and system
CN112737695A (en) * 2020-12-04 2021-04-30 东南大学 Adaptive symbol set design method based on generalized spatial modulation
CN112737695B (en) * 2020-12-04 2021-10-08 东南大学 Adaptive symbol set design method based on generalized spatial modulation

Also Published As

Publication number Publication date
CN105359433B (en) 2017-11-17
WO2015172375A1 (en) 2015-11-19

Similar Documents

Publication Publication Date Title
US8903250B2 (en) Cost-effective multi-rate upstream for 10GEPON based on high efficiency coding
US9882649B2 (en) Transmitting, receiving and communication systems of optical network and method for modulating signal
CN103270712B (en) For the multiplexing conversion of passive optical network
US11489622B2 (en) Probabilistically coded modulation for fronthaul networks
CN105264853A (en) Communication method, apparatus, and system for passive optical network (pon)
CN105359433B (en) A kind of communication means, apparatus and system
CN111698581B (en) Apparatus and method for controlling upstream transmission of bursts in a passive optical network
WO2018162743A1 (en) Flexible modulation in pon networks
JP5697518B2 (en) Station-side terminator, subscriber-side terminator, and optical transmission system
CN102202245B (en) Method, device and system for processing signals
US20140328589A1 (en) Burst Marker Scheme in a Communication System
CN104038463B (en) Optical access network system based on four-dimensional Dynamic Resource Allocation for Multimedia
JP6291362B2 (en) Optical access system, termination device, in-home device, and optical access method
Lian et al. M-PAM joint optimal waveform design for multiuser VLC systems over ISI channels
Jiang et al. Flexible filter bank multi-carriers PON based on two-dimensional multiple probabilistic shaping distribution
JP5775105B2 (en) Transmitting apparatus / method and receiving apparatus / method in a passive optical communication network
CN103117831A (en) Upstream channel accessing device of passive optical network system
Khalil et al. A new achievable DoF region for the 3-user M× N symmetric interference channel
van der Linden et al. Demonstration and application of 37.5 Gb/s duobinary-PAM3 in PONs
CN101741501A (en) Communication device and communication method
Straub et al. Flexible-rate PON with loss-configurable ODN splitters for throughput optimization
CN107534628B (en) Circuit and method for obtaining PAM4 decoding threshold value and optical network unit
Schueppert et al. A comparison of one-and higher-dimensional modulation schemes for optical Gigabit transmission
Bolea et al. Software reconfigurable PONs utilizing digital filter multiple access
Bolea et al. Software Reconfigurable Digital Filter Multiple Access PONs

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant