WO2019144861A1 - 无源光纤网络中的编码控制方法、装置、通信设备及存储介质 - Google Patents
无源光纤网络中的编码控制方法、装置、通信设备及存储介质 Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
- H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
- H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
- H03M13/1515—Reed-Solomon codes
Definitions
- the present disclosure relates to the field of communications, for example, to a coding control method, apparatus, communication device, and storage medium in a Passive Optical Network (PON).
- PON Passive Optical Network
- 10Gbits PON for example, 10Gbits Ethernet Passive Optical Network (EPON)/Gigabit-Capable PON (GPON) uplink and downlink channels are used by Reed- Reed-Solomon (RS) encoding, such as RS (255, 223) or RS (255, 239) encoding
- RS Reed- Reed-Solomon
- the codeword word length is a fixed number of 255 symbols.
- new coding methods have also been introduced, such as the low density of 16Kbit codewords introduced by 50Gbits EPON/GPON systems.
- LDPC Low Density Parity Check Code
- the coding control method, device, communication device and storage medium in a PON provided by the embodiments of the present disclosure are to solve the problem of how to reliably and accurately select an encoding manner for one or more services to meet the coding requirements of the service.
- an embodiment of the present disclosure provides a coding control method in a passive optical network, including:
- the coding mode corresponding to the codeword length N is matched;
- the data of the service is encoded by the matched coding manner.
- an embodiment of the present disclosure further provides an encoding control apparatus in a passive optical fiber network, including:
- the information acquiring module is configured to obtain a codeword length N corresponding to the service to be encoded
- the matching module is configured to match the encoding mode corresponding to the length N of the codeword in the preset codeword length range and the encoding mode correspondence table;
- the control module is configured to encode the data of the service by using the coding manner matched by the matching module.
- an embodiment of the present disclosure further provides a passive optical network communication device, including a processor, a memory, and a communication bus;
- the communication bus is configured to implement connection communication between the processor and the memory
- the processor is arranged to execute one or more programs stored in the memory to implement the method as described above.
- an embodiment of the present disclosure further provides a computer readable storage medium storing one or more programs, the one or more programs being configurable by one or more processors Executed to implement the method as described above.
- FIG. 1 is a schematic flowchart of a coding control method in a passive optical network according to Embodiment 1 of the present disclosure
- FIG. 2 is a schematic flowchart of a codeword length matching coding method according to Embodiment 2 of the present disclosure
- FIG. 3 is a schematic structural diagram of an encoding control apparatus in a passive optical network according to Embodiment 3 of the present disclosure
- FIG. 4 is a schematic structural diagram of a passive optical network communication device according to Embodiment 4 of the present disclosure.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the embodiment provides a coding control method in a passive optical network, as shown in FIG. 1 , including S110 to S130. .
- the codeword length N of the service is generally defined according to the characteristics of the service itself in the corresponding communication protocol, so the codeword length corresponding to one or more services can be obtained from the corresponding communication protocol.
- the length of the codeword corresponding to the service may be determined directly according to the characteristics of one or more services, or any other manner that can implement the codeword length N corresponding to the service may be adopted.
- the codeword length N corresponding to the service may be characterized by a bit or by a symbol number.
- the symbol may also be used for characterization.
- N the codeword length N is characterized by symbol data
- N 2 n -1
- n is the number of bits (number of information bits) represented by one symbol number
- the codeword length N is characterized by a binary symbol
- the amount of information of one binary symbol is 1 bit
- the codeword length is 2040 bits
- the correspondence can be converted into a codeword length of 2040 binary.
- Symbol when a symbol such as an octal symbol or a hexadecimal symbol is used, the corresponding conversion may be performed.
- the length of the codeword N is characterized by bits or by the number of symbols, which can be flexibly selected, and the two can be flexibly converted by the relationship of the above examples.
- This embodiment is characterized by a codeword length N in bits, where the codeword length N is N bits.
- the codeword length range and the encoding mode correspondence table may be preset, and the encoding mode included and the codeword length range corresponding to each encoding mode may be flexibly set.
- the length of the codeword corresponding to one coding mode may be one or multiple.
- the codeword length range and the coding mode correspondence table include a first coding mode and a second coding mode, and the first coding mode corresponds to the first codeword length range, The second coding mode corresponds to the second codeword length range.
- the codeword length range and the coding mode correspondence table include a first coding mode, a second coding mode, and a third coding mode
- the first coding mode corresponds to the first a length range of the codeword
- the second coding mode corresponds to the second codeword length range
- the third coding mode corresponds to the third codeword length range and the fourth codeword length range
- the third codeword length range and the fourth codeword length range There is no intersection between them.
- the coding mode included in the codeword length range and the coding mode correspondence table and the codeword length range corresponding to each coding mode can be flexibly set, and can be set by the service provider or by the network. Provider settings or settings by other parties.
- the codeword length range corresponding to each coding mode can be flexibly set according to the characteristics of the coding mode itself, the requirements of one or more services, and the like.
- the codeword length ranges corresponding to different coding modes may have no intersection, or may have partial intersections.
- any one of multiple coding modes corresponding to the intersection range may be selected or another selection mechanism may be adopted from multiple coding modes corresponding to the intersection range. Any one is selected, for example, but not limited to, secondary selection according to characteristics such as heat usage, priority, and the like of the encoding method.
- the data of the service is encoded by using the matched coding mode.
- the data related to the service may be encoded by using a selected coding mode.
- the coding control method in the passive optical network is applicable to one or more communication devices in a passive optical network, including but not limited to an optical line terminal (OLT), and an optical network unit (Optical). Network Unit, ONU). Moreover, the coding control method provided by this embodiment is applicable not only to a passive optical network but also to other types of communication networks.
- OLT optical line terminal
- ONU optical network unit
- the coding control method provided by this embodiment is applicable not only to a passive optical network but also to other types of communication networks.
- the coding control method in the passive optical network provided by the embodiment may be based on a codeword length corresponding to one or more services and a codeword length corresponding to one or more coding modes.
- a plurality of services match the coding mode that is suitable for the user, and the matching process can be an automatic matching (of course, it can also be set to non-automatic matching according to actual requirements), so as to avoid large delay or error correction capability caused by the error in the coding mode selection.
- problems such as poor.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- the present embodiment is based on the foregoing embodiment, and the RS code encoding and the low density parity check code encoding (LDPC encoding) are included in the codeword length range and the encoding mode correspondence table as an example.
- LDPC encoding low density parity check code encoding
- the RS code and the LDPC code may each correspond to only one codeword length range.
- the RS code corresponds to the first codeword length range
- the LDPC code corresponds to the second codeword length range.
- the coding mode corresponding to the length of the codeword N is matched, as shown in FIG. 2, including S201 to S206. .
- the codeword length N is matched with the first codeword length range and the second codeword length range.
- S202 it is determined whether the codeword length falls within the first codeword length range. If the codeword length falls within the first codeword length range, the process goes to S203; if the codeword length does not fall within the first codeword length range, Then go to S204.
- an alarm may be initiated, or an encoding manner may be selected according to a preset rule, for example, directly selecting an LDPC encoding or an RS encoding.
- the execution order of S202 and S204 can be flexibly set, and the two can be executed in parallel at the same time, or can be performed in a serial manner.
- the RS code corresponding to the first codeword length range and the LDPC code corresponding to the second codeword length range may be continuous or non-contiguous.
- the first codeword length ranges from the codeword length to less than or equal to the preset codeword length threshold X
- the second codeword length ranges from the codeword length to the preset codeword length threshold X, where the code The word length threshold X is the number of bits.
- the value of the codeword length threshold X may be greater than or equal to 128 bits and less than or equal to 2048 bits, for example, 155 bits, 378 bits, 889 bits, 2040 bits, etc.
- the codeword length threshold X in this embodiment may be set to other value ranges according to the actual application scenario, and is not limited to 128 bits or more and less than or equal to 2048 bit value range.
- the first codeword length ranges from a codeword length greater than or equal to a preset codeword length threshold X1, less than or equal to a preset codeword length threshold X2, and a second codeword length range is a codeword length.
- the preset codeword length threshold X3 is greater than or equal to the preset codeword length threshold X4, wherein X1 is smaller than X2, X3 is greater than X2, and X4 is greater than X3.
- At least one of the RS code and the LDPC code corresponds to more than two codeword length ranges.
- the first codeword length ranges from the codeword length to be greater than or equal to the preset codeword length threshold X1, which is less than or equal to the preset.
- the codeword length threshold X2 the second codeword length range is that the codeword length is greater than or equal to the preset codeword length threshold X3, less than or equal to the preset codeword length threshold X4, and the codeword length is greater than or equal to the preset codeword length.
- the threshold X5 is less than or equal to the preset codeword length threshold X6; wherein X1 is smaller than X2, X3 is greater than X2, X4 is greater than X3, X5 is greater than X4, and X6 is greater than X5.
- codeword length ranges corresponding to the above RS coding and LDPC coding are merely exemplary descriptions, and the codeword length range can be flexibly set according to the actual application scenario and coding mode.
- the step of determining the coding parameter of the matched coding mode may be further included.
- the encoding parameter in the embodiment includes the number of bits included in the encoded one codeword (of course, it can also be replaced by the number of book symbols n), and the number of information bits before encoding (of course, it can also be replaced by the number of book symbols) n is characterized).
- the number of bits included in one codeword of one or more coding modes and the number of information bits before coding may also be preset, for example, all set to a fixed value.
- dynamic and flexible setting may be performed according to the codeword length N corresponding to the service, so as to better meet the requirements of one or more services.
- determining the number of bits included in the coded one codeword of the RS coding and the LDPC coding may include: using the codeword length N corresponding to the service as the number of bits included in the coded one codeword.
- the coded one codeword of the RS code contains 2040 (converted to the number of symbols is 255);
- the LDPC code is output, and the number of bits included in the coded one codeword of the LDPC code is also 2040 (converted to the number of symbols is 255).
- the manner of determining the number of information bits before encoding may be set according to the following rules:
- determining the number of information bits before coding includes determining that the number of information bits before coding is an integer greater than 0.8 times the codeword length N and less than 0.93 times the codeword length N. For example, assuming that the number of information bits before encoding is k, the value range of k is 0.8*N ⁇ k ⁇ 0.93*N.
- the corresponding coding mode may be matched according to the codeword length corresponding to one or more services, and the coding mode may be set according to the codeword length N corresponding to one or more services.
- Corresponding coding parameters can meet the needs of one or more services more accurately.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- the embodiment further provides an encoding control device in a passive optical network, and the encoding control device may be disposed in one or more passive optical network communication devices to be subjected to an encoding operation, for example, may be included but included It is limited to the OLT or the ONU, and the functions of the modules included in the encoding control device can be implemented by the processor or controller of these communication devices.
- the coding control apparatus includes:
- the information obtaining module 310 is configured to obtain a codeword length N corresponding to the service to be encoded.
- the codeword length N of the service is generally defined according to the characteristics of the service itself in the corresponding communication protocol, so the information obtaining module 310 can obtain one or more services corresponding to the corresponding communication protocol.
- the length of the codeword is N; of course, the information acquiring module 310 can directly determine the length of the codeword corresponding to the service according to the characteristics of one or more services, or adopt any other manner that can implement the codeword length N corresponding to the service.
- the codeword length N corresponding to the service in this embodiment may be characterized by bits, or may be characterized by the number of symbols.
- the matching module 320 is configured to match the codeword length N obtained by the information acquiring module 310, and match the encoding mode corresponding to the codeword length N in the preset codeword length range and the encoding mode correspondence table.
- the codeword length range and the coding mode correspondence table may be preset, and at least includes two coding modes, each coding mode corresponding to at least one codeword length range, and the coding mode and each of the coding modes included therein
- the codeword length range corresponding to the coding mode can be flexibly set.
- the length of the codeword corresponding to one coding mode may be one or multiple.
- the control module 330 is configured to encode the data of the service by using an encoding manner matched by the matching module 320.
- the present embodiment still uses RS code and LDPC coding as an example in the codeword length range and the coding mode correspondence table.
- the RS code and the LDPC code respectively correspond to only one codeword length range
- the RS code codeword length range is that the codeword length is less than or equal to the preset codeword length threshold X
- the LDPC coded codeword length range The codeword length is greater than the preset codeword length threshold X, wherein the codeword length threshold X is the number of bits.
- the codeword length N corresponding to the service is equal to 2040 bits (that is, 255 symbol numbers)
- RS coding may be adopted, and an encoding method of RS (255, 223) or RS (255, 239) may be multiplexed; 255 is the number of symbols included in one codeword after encoding, and 223 is the number of information bits before encoding, and the number of bits converted is 2040 and 1784, respectively; and the corresponding number of bits 239 is 1912.
- the symbol number representation or the bit number representation can be flexibly set.
- RS coding may be adopted, for example, an encoding method of RS (127, 111) may be used;
- RS coding may be employed, for example, an encoding method of RS (63, 55) may be used.
- RS coding may be employed, for example, the coding mode of RS (31, 27) may be used.
- X can be characterized directly by the number of bits.
- the threshold X can take any one of 128 to 2048.
- the threshold X is equal to 0.9*1K
- the codeword length N corresponding to the service is greater than 0.9*1K.
- the LDPC encoding is selected, and the setting rules of the LDPC encoded encoding parameters may be:
- N is the codeword length corresponding to the service, and is also the number of bits included in the coded one codeword of the LDPC code, that is, the number of bits included in the coded one codeword is equal to the codeword length corresponding to the service; k is the number of information bits before encoding of the LDPC code.
- the coding when the codeword length corresponding to the service is small, the coding may be performed by the LDPC coding mode of the small code block, which may reduce the algorithm complexity and the processing delay; When it is large, the coding gain can be increased by the LDPC code of the large code block.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- the present embodiment provides a passive optical network communication device, which may be any communication device in the passive optical network that needs to perform an encoding operation, and may be, for example, an OLT or an ONU.
- the passive optical network communication device in this embodiment includes a processor 401, a memory 402, and a communication bus 403.
- Communication bus 403 is configured to implement connection communication between processor 401 and memory 402;
- Processor 401 is arranged to execute one or more programs stored in memory 402 to implement the methods described in the above embodiments.
- This embodiment also provides a computer readable storage medium that can be utilized in one or more electronic communication devices, including, for example, but not limited to, an OLT, an ONU.
- the computer readable storage medium stores one or more programs that can be executed by one or more processors to implement the methods described in the above embodiments.
- the present embodiment still uses RS code and LDPC coding as an example in the codeword length range and the coding mode correspondence table.
- the RS coding and the LDPC coding respectively correspond to only one codeword length range
- the RS coded codeword length range is that the codeword length is less than or equal to the preset codeword length threshold X
- the LDPC coded codeword length range The codeword length is greater than the preset codeword length threshold X, wherein the codeword length threshold X is the number of bits.
- the RS code can multiplex the coding mode of RS (255, 223) or RS (255, 239).
- the LDPC (N, k) coding mode is used, 0.8*N ⁇ k ⁇ 0.93*N. At this time, the decoding delay of the LDPC can be controlled within 4us;
- the decoding delay of the LDPC can be controlled within 6us
- the LDPC (N, k) coding mode is used, 0.8*N ⁇ k ⁇ 0.93*N. At this time, the decoding delay of the LDPC can be controlled within 20us.
- the coding parameter setting mode may be:
- the LDPC (N, k) coding mode is used, 0.8*N ⁇ k ⁇ 0.93*N. At this time, the decoding delay of the LDPC can be controlled within 4us;
- the codeword length N corresponding to the service is equal to 889 bits (that is, 127 symbols), and RS coding may be used.
- RS coding may be used; at this time, the decoding delay of the RS may be Control within 1s;
- RS coding may be used.
- an RS (63, 55) coding mode may be used.
- LDPC decoding is used. The delay can be controlled within 0.5us;
- RS coding may be used.
- an RS (31, 27) coding mode may be used.
- LDPC decoding is used.
- the delay can be controlled within 0.25us.
- the upgraded 25G/50G EPON/GOPN system can use a smaller RS codeword word length, which can reduce the algorithm complexity and the decoding processing delay; Switching to the LDPC code of the small code block earlier increases the coding gain relative to the associated RS (255, 223).
- one or more of the modules or one or more steps of the above-described embodiments of the present disclosure may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a plurality of On a network of computing devices, in one embodiment, they may be implemented in program code executable by the computing device so that they may be stored in a computer storage medium (Read-Only Memory, ROM). /Random Access Memory (RAM), disk, optical disk) is performed by a computing device, and in some cases, the steps shown or described may be performed in a different order than herein, or They are fabricated separately into one or more integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Therefore, the present disclosure is not limited to any specific combination of hardware and software.
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Abstract
本文公开了一种无源光纤网络PON中的编码控制方法,包括:获取待编码的业务对应的码字长度N;在预设的码字长度范围与编码方式对应关系表中,匹配出码字长度N对应的编码方式,采用匹配出的编码方式对所业务的数据进行编码。本文还公开了一种PON中的编码控制装置、通信设备以及存储介质。
Description
本申请要求在2018年01月25日提交中国专利局、申请号为201810072184.0的中国专利申请的优先权,该申请的全部内容通过引用结合在本申请中。
本公开涉及通信领域,例如涉及一种无源光纤网络(Passive Optical Network,PON)中的编码控制方法、装置、通信设备及存储介质。
在10Gbits的PON中,例如10Gbits的以太网无源光网络(Ethernet Passive Optical Network,EPON)/无源光接入系统(Gigabit-Capable PON,GPON)的上行信道与下行信道都是使用里德-所罗门(Reed-Solomon,RS)编码,例如RS(255,223)或者RS(255,239)的编码方式,码字字长都是固定的255个符号数。但是随着10Gbits的EPON/GPON系统升级到25Gbits/50Gbits的EPON/GOPN系统的过程中,新的编码方式也被引进,例如50Gbits的EPON/GPON系统引进的16K比特码字字长的低密度奇偶校验码(Low Density Parity Check Code,LDPC)编码;当然后续也不排除会继续引入其他的编码方式。随着编码方式的丰富和根据多种编码方式各自的优缺点,在哪种条件下选用哪种变化方式就变得尤为重要,因此提供一种可靠且准确的编码方式选择机制以满足不同业务的编码需求是亟需解决的问题。
发明内容
本公开实施例提供的一种PON中的编码控制方法、装置、通信设备及存储介质,以解决如何为一种或多种业务可靠、准确的选择编码方式以满足业务的编码需求。
在一实施例中,本公开实施例提供一种无源光纤网络中的编码控制方法,包括:
获取待编码的业务对应的码字长度N;
在预设的码字长度范围与编码方式对应关系表中,匹配出所述码字长度N对应的编码方式;
采用匹配出的所述编码方式对所业务的数据进行编码。
在一实施例中,本公开实施例还提供一种无源光纤网络中的编码控制装置,包括:
信息获取模块,设置为获取待编码的业务对应的码字长度N;
匹配模块,设置为在预设的码字长度范围与编码方式对应关系表中,匹配出所述码字长度N对应的编码方式;
控制模块,设置为采用所述匹配模块匹配出的所述编码方式对所业务的数据进行编码。
在一实施例中,本公开实施例还提供一种无源光纤网络通信设备,包括处理器、存储器及通信总线;
所述通信总线设置为实现所述处理器和所述存储器之间的连接通信;
所述处理器设置为执行所述存储器中存储的一个或者多个程序,以实现如上所述的方法。
在一实施例中,本公开实施例还提供一种计算机可读存储介质,所述计算机可读存储介质存储有一个或者多个程序,所述一个或者多个程序可被一个或者多个处理器执行,以实现如上所述的方法。
图1为本公开实施例一的无源光纤网络中的编码控制方法流程示意图;
图2为本公开实施例二的根据码字长度匹配编码方式的流程示意图;
图3为本公开实施例三的无源光纤网络中的编码控制装置结构示意图;
图4为本公开实施例四的无源光纤网络通信设备结构示意图。
下面通过实施方式结合附图对本公开实施例进行说明。此处所描述的实施例仅仅用以解释本公开,并不用于限定本公开。
实施例一:
为了实现为一种或多种业务可靠、准确的选择编码方式以满足业务的编码需求,本实施例提供了一种无源光纤网络中的编码控制方法,参见图1所示,包括S110至S130。
在S110中,获取待编码的业务对应的码字长度N。
在本实施例中,业务的码字长度N一般在相应的通信协议中会根据业务自身的特性定义好,因此可以从相应的通信协议中获取到一种或多种业务对应的码字长度N;当然,也可以直接根据一种或多种业务自身的特性确定该业务所对应的码字长度,或采用其他任意能实现业务对应的码字长度N的方式。
在一实施例中,业务对应的码字长度N可以用比特进行表征,也可以用符号数进行表征,当然,也可以用码元进行表征。
例如,在码字长度N用符号数据进行表征的情况下,N=2
n-1,n为一个符号数表示的比特数(信息位数),n的取值可以是5、6、7、8等等,如当n=8时,此时码字长度N就等于255个符号数;当n=7时,此时码字长度N就等于127个符号数。
又例如,在码字长度N用比特数进行表征的情况下,N=(2
n-1)*n,n仍为一个符号数表示的比特数(信息位数),n的取值也可以是3、4、5、6、7、8等等,如当n=8时,此时码字长度N就等于2040个比特;当n=7时,此时码字长 度N就等于889个比特,以此类推。
例如,在码字长度N用二进制码元进行表征的情况下,由于一个二进制码元信息量为1比特,因此当码字长度为2040个比特时,对应可换算成码字长度为2040个二进制码元。在一实施例中,当采用八进制码元、十六进制码元等码元时进行相应换算即可。
本实施例中码字长度N用比特进行表征还是用符号数进行表征可以灵活选择,二者可以通过上述示例的关系进行灵活换算。本实施例以码字长度N用比特进行表征,此时码字长度N为N个比特。
在S120中,根据获取的码字长度N,在预设的码字长度范围与编码方式对应关系表中,匹配出码字长度N对应的编码方式。
本实施例中,码字长度范围与编码方式对应关系表可以预先设置好,其所包含的编码方式以及每种编码方式对应的码字长度范围可以灵活设定。且一种编码方式对应的码字长度范围可以是一个,也可以是多个。
例如,在一种示例中,参见下表1所示,码字长度范围与编码方式对应关系表包括第一编码方式和第二编码方式,且第一编码方式对应第一码字长度范围,第二编码方式对应第二码字长度范围。
表1
编码方式 | 码字长度范围 |
第一编码方式 | 第一码字长度范围 |
第二编码方式 | 第二码字长度范围 |
又例如,在一种示例中,参见下表2所示,码字长度范围与编码方式对应关系表包括第一编码方式、第二编码方式和第三编码方式,且第一编码方式对应第一码字长度范围,第二编码方式对应第二码字长度范围,第三编码方式对 应第三码字长度范围和第四码字长度范围,第三码字长度范围和第四码字长度范围之间无交集。
表2
可见,本实施例中码字长度范围与编码方式对应关系表所包含的编码方式以及每种编码方式对应的码字长度范围可以灵活设定,且可以由业务提供商设定,也可以由网络提供商设定或者由其他方进行设置。每种编码方式对应的码字长度范围可以根据该编码方式自身的特性,一种或多种业务的需求等因素灵活设定。且不同编码方式对应的码字长度范围之间可以无交集,也可以部分有交集。对于存在交集且业务的码字长度在该交集范围内的情况,可以选择该交集范围对应的多种编码方式的任意一种或再采用其他的选择机制从该交集范围对应的多种编码方式中任意选择一种,例如包括但不限于根据编码方式的使用热度、优先级等特性进行二次选择。
在S130中,采用匹配出的编码方式对所业务的数据进行编码。
通过S120为该业务选择好编码方式后,即可采用选择的编码方式对该业务相关的数据(包括但不限于一种或多种业务数据)进行编码。
本实施例提供的无源光纤网络中的编码控制方法适用于无源光纤网络中的一种或多种通信设备,包括但不限于光线路终端(Optical Line Terminal,OLT), 光网络单元(Optical Network Unit,ONU)。且本实施例提供的编码控制方法不仅适用于无源光纤网络,也适用于其他类型的通信网络。
通过本实施例提供的无源光纤网络中的编码控制方法,可以根据一种或多种业务对应的码字字长以及一种或多种编码方式所对应的码字字长范围为一种或多种业务匹配出适合自身的编码方式,且该匹配过程可以是自动匹配(当然也可以根据实际需求设置为非自动匹配),避免因编码方式选用错误导致业务出现较大时延或纠错能力差等问题的出现。
实施例二:
为了便于理解,本实施例在上述实施例的基础上,以码字长度范围与编码方式对应关系表中包括RS编码和低密度奇偶校验码编码(LDPC编码)为示例进行说明。
在本实施例中,RS编码和LDPC编码可以分别都只对应一个码字长度范围,例如参见表3所示,RS编码对应第一码字长度范围,LDPC编码对应第二码字长度范围。此时,根据获取的业务对应的码字长度N在预设的码字长度范围与编码方式对应关系表中,匹配出该码字长度N对应的编码方式参见图2所示,包括S201至S206。
在S201中,将码字长度N与第一码字长度范围和第二码字长度范围进行匹配。
在S202中,判断码字长度是否落入第一码字长度范围,如果码字长度落入第一码字长度范围,则转至S203;如果码字长度没有落入第一码字长度范围,则转至S204。
在S203中,确定码字长度N对应的编码方式为RS编码。
在S204中,判断码字长度是否落入第二码字长度范围,如果码字长度落入 第二码字长度范围,则转至S205;如果码字长度没有落入第二码字长度范围,则转至S206。
在S205中,确定码字长度N对应的编码方式为LDPC编码。
在S206中,如还有其他编码方式则继续判断,如无其他编码方式,则结束匹配。
在本实施例中,如果最终匹配失败,则可以发起告警,也可以根据预设规则选择一种编码方式,例如直接选择LDPC编码或RS编码等。
在一实施例中,S202和S204的执行顺序可以灵活设定,二者可同时并行执行,也可采用串行的方式执行。
表3
编码方式 | 码字长度范围 |
RS编码 | 第一码字长度范围 |
LDPC编码 | 第二码字长度范围 |
在本实施例中,RS编码对应第一码字长度范围和LDPC编码对应第二码字长度范围之间可以是连续的,也可以是非连续的。例如参见表4所示,第一码字长度范围为码字长度小于或等于预设码字长度阈值X,第二码字长度范围为码字长度大于预设码字长度阈值X,其中,码字长度阈值X为比特数。
表4
编码方式 | 码字长度范围 |
RS编码 | 小于或等于X |
LDPC编码 | 大于X |
本实施例中,码字长度阈值X的取值可以为大于或等于128比特,且小于或等于2048比特,例如可取155比特、378比特、889比特、2040比特等,当然码字长度阈值X也可以通过表达式(2
n-1)*n来设置,此时155比特则表征为(2
5-1)*5=31个符号数,378比特则表征为(2
6-1)*6=63个符号数,889比特则表征为(2
7-1)*7=127个符号数,2040比特则表征为(2
8-1)*8=255个符号数。当然,本实施例中码字长度阈值X根据实际应用场景也可以设置为其他的取值范围,并不限于上述示例的大于或等于128比特,且小于或等于2048比特取值范围。
本实施例中,码字长度阈值X可以直接设置为一个比特数据,例如取128<=X<=2048,即X可以根据应用场景取128至2048中的任意一个值,例如取2048时,当获取的业务对应的码字长度N小于或等于2048个比特时,确定采用RS编码;当获取的业务对应的码字长度N大于2048个比特时,确定采用LDPC编码;例如取128时,当获取的业务对应的码字长度N小于或等于128个比特时,确定采用RS编码;当获取的业务对应的码字长度N大于128个比特时,确定采用LDPC编码;又例如取1024时,当获取的业务对应的码字长度N小于或等于1024个比特时,确定采用RS编码;当获取的业务对应的码字长度N大于1024个比特时,确定采用LDPC编码。
又例如参见表5所示,第一码字长度范围为码字长度大于或等于预设码字长度阈值X1,小于或等于预设码字长度阈值X2,第二码字长度范围为码字长度大于或等于预设码字长度阈值X3,小于或等于预设码字长度阈值X4,其中,X1小于X2,X3大于X2,X4大于X3。
表5
RS编码和LDPC编码至少一个对应两个以上的码字长度范围,例如参见表6所示,第一码字长度范围为码字长度大于或等于预设码字长度阈值X1,小于或等于预设码字长度阈值X2,第二码字长度范围为码字长度大于或等于预设码字长度阈值X3,小于或等于预设码字长度阈值X4,以及码字长度大于或等于预设码字长度阈值X5,小于或等于预设码字长度阈值X6;其中,X1小于X2,X3大于X2,X4大于X3;X5大于X4,X6大于X5。
表6
以上RS编码和LDPC编码所对应的码字长度范围都仅仅是示例性的说明,码字长度范围可以根据实际的应用场景和编码方式灵活设定。且X1、X2,X3、X4、X5、X6的取值表征方式可以参见上述X的表征方式。
在本实施例中,根据业务对应的码字字长确定出对应的编码方式之后,采用确定的编码方式对所业务的数据进行编码之前,还可包括确定匹配出的编码 方式的编码参数的步骤,且本实施例中编码参数包括编码后的一个码字所包含的比特数(当然也可以换成书符号数n进行表征),以及编码前的信息比特数(当然也可以换成书符号数n进行表征)。
在一示例中,一种或多种编码方式的编码后的一个码字所包含的比特数和编码前的信息比特数也可以预先设置好,例如都预先设置为一个固定的数值。但在本实施例中,可以根据业务对应的码字长度N进行动态灵活的设置,以更好的满足一种或多种业务的需求。例如,在本实施例中,确定RS编码和LDPC编码的编码后的一个码字所包含的比特数可包括:将业务对应的码字长度N作为编码后的一个码字所包含的比特数。此时当业务对应的码字长度N=2040时,如果匹配出的是RS编码,则RS编码的编码后的一个码字所包含的比特数为2040(换算成符号数为255);如果匹配出的是LDPC编码,则LDPC编码的编码后的一个码字所包含的比特数也为2040(换算成符号数为255)。
在本实施例中,对于编码前的信息比特数的确定方式可以遵循以下规则进行设置:
当匹配出的编码方式为RS编码时,确定RS编码的编码前的信息比特数包括:确定编码前的信息比特数为小于码字长度N,且大于0的一个整数;例如当业务对应的码字长度N=2040时,则RS编码的编码后的一个码字所包含的比特数为2040(换算成符号数为255),则编码前的信息比特数可以为1784(换算成符号数为223)或1912(换算成符号数为239)。
当匹配出的编码方式为LDPC编码时,确定编码前的信息比特数包括:确定编码前的信息比特数为大于0.8乘以码字长度N,且小于0.93乘以码字长度N的一个整数。例如假设编码前的信息比特数为k,则k的取值范围为0.8*N<k<0.93*N。
可见,在本实施例中,既可以根据一种或多种业务对应的码字长度为其匹 配出对应的编码方式,还可以根据一种或多种业务对应的码字长度N设置其编码方式对应的编码参数,可以更精准的满足一种或多种业务的需求。
实施例三:
本实施例还提供了一种无源光纤网络中的编码控制装置,该编码控制装置可设置于一种或多种要进行编码操作的无源光纤网络通信设备中,例如可以设置于包括但不限于OLT或ONU中,且编码控制装置所包含的模块的功能可通过这些通信设备的处理器或控制器实现。参见图3所示,该编码控制装置包括:
信息获取模块310,设置为获取待编码的业务对应的码字长度N。在本实施例中,业务的码字长度N一般在相应的通信协议中会根据业务自身的特性定义好,因此信息获取模块310可以从相应的通信协议中获取到一种或多种业务对应的码字长度N;当然,信息获取模块310也可以直接根据一种或多种业务自身的特性确定该业务所对应的码字长度,或采用其他任意能实现业务对应的码字长度N的方式。另外,本实施例中业务对应的码字长度N可以用比特进行表征,也可以用符号数进行表征。
匹配模块320,设置为根据信息获取模块310获取的码字长度N,在预设的码字长度范围与编码方式对应关系表中,匹配出码字长度N对应的编码方式。本实施例中,码字长度范围与编码方式对应关系表可以预先设置好,其至少包括两种编码方式,每一种编码方式对应至少一个码字长度范围,且其所包含的编码方式以及每种编码方式对应的码字长度范围可以灵活设定。且一种编码方式对应的码字长度范围可以是一个,也可以是多个。
控制模块330,设置为采用匹配模块320匹配出的编码方式对所业务的数据进行编码。
为了便于理解,本实施例在上述实施例的基础上,仍以码字长度范围与编码方式对应关系表中包括RS编码和LDPC编码为示例进行说明。在本实施例中, RS编码和LDPC编码分别都只对应一个码字长度范围,RS编码的码字长度范围为码字长度小于或等于预设码字长度阈值X,LDPC编码的码字长度范围为码字长度大于预设码字长度阈值X,其中码字长度阈值X为比特数。
在本示例中,X可以通过表达式X=(2n-1)*n进行表征;此时(2n-1)*n个bit的码字长度作为RS编码与LDPC编码之间进行选择的边界条件。当业务对应的码字长度N<=X时,使用RS编码;当N>X时,使用LDPC编码;n取不为0的自然数。
例如:当n=8,业务对应的码字长度N等于2040比特(也即255个符号数)时,可以采用RS编码,且可以复用RS(255,223)或RS(255,239)的编码方式;其中255为编码后的一个码字所包含的符号数,223为编码前的信息比特数,换算成比特数分别为2040和1784;对应的239换算成比特数为1912。在一实施例中,采用符号数表征还是比特数表征可以灵活设定。
同理,当n=7,业务对应的码字长度N等于889比特(也即127个符号数)时,可以采用RS编码,例如可以使用RS(127,111)的编码方式;
当n=6,业务对应的码字长度N等于378比特(也即63个符号数)时,可以采用RS编码,例如可以使用RS(63,55)的编码方式。
当n=5,业务对应的码字长度N等于155比特(也即31个符号数)时,可以采用RS编码,例如可以使用RS(31,27)的编码方式。
以上示例是以符号数的表征方式进行示例说明,X可以直接以比特数进行表征。例如,可以设置128<=X<=2048个比特的码字长度作为RS编码与LDPC编码的选择的边界。此时阈值X可以取128至2048中的任意一个值。在一实施例中,阈值X的取值范围可以灵活设置,例如还可以设置为0.9*1K<X<=1.1*32K中的任意一个整数,其中,1K等于1024个比特,2K等于2048个比特,以此类推。在一种示例中,设阈值X等于0.9*1K,且业务对应的码字长度N大于 0.9*1K,此时选择LDPC编码,且LDPC编码的编码参数的设置规则可以为:
当0.9*1K<=N<=1.1*1K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N;
当0.9*2K<=N<=1.1*2K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N;
当0.9*4K<=N<=1.1*4K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N;
当0.9*8K<=N<=1.1*8K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N;
当0.9*16K<=N<=1.1*16K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N;
当0.9*32K<=N<=1.1*32K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N。
上述N既为业务对应的码字长度,也为LDPC编码的编码后的一个码字所包含的比特数,也即编码后的一个码字所包含的比特数等于业务对应的码字长度;上述k为LDPC编码的编码前的信息比特数。
可见,在本实施例中,当业务对应的码字字长较小时,也可通过小码块的LDPC编码方式进行编码,可以降低算法复杂度与处理时延;当业务对应的码字字长较大时,则可通过大码块的LDPC码,可以增加编码增益。
实施例四:
本实施例提供了一种无源光纤网络通信设备,该无源光纤网络通信设备可以是无源光纤网络中需要进行编码操作的任意通信设备,例如可以为OLT或ONU。参见图4所示,本实施例中的无源光纤网络通信设备包括处理器401、存储器402及通信总线403。
通信总线403设置为实现处理器401和存储器402之间的连接通信;
处理器401设置为执行存储器402中存储的一个或者多个程序,以实现如上实施例所述的方法。
本实施例还提供了一种计算机可读存储介质,该计算机可读存储介质可应 用于一种或多种电子通信设备中,例如包括但不限于OLT、ONU。该计算机可读存储介质存储有一个或者多个程序,该个或者多个程序可被一个或者多个处理器执行,以实现如上实施例所述的方法。
为了便于理解,本实施例在上述实施例的基础上,仍以码字长度范围与编码方式对应关系表中包括RS编码和LDPC编码为示例进行说明。在本实施例中,RS编码和LDPC编码分别都只对应一个码字长度范围,RS编码的码字长度范围为码字长度小于或等于预设码字长度阈值X,LDPC编码的码字长度范围为码字长度大于预设码字长度阈值X,其中码字长度阈值X为比特数。下面分别以几种示例进行解释说明。
示例一:
在本示例中,X可以通过表达式X=(2n-1)*n进行表征;此时(2n-1)*n个bit的码字长度作为RS编码与LDPC编码之间进行选择的边界条件。当业务对应的码字长度N<=X时,使用RS编码;当N>X时,使用LDPC编码;n取不为0的自然数,例如:
一种示例中,n=8,业务对应的码字长度N等于2040比特(也即255个符号数)时,RS编码可以复用RS(255,223)或RS(255,239)的编码方式。
一种示例中,X通过比特数进行表征,且例如设置为X=1K=1024个比特,且业务对应的码字长度N大于1K,此时,
当0.9*2K<=N<=1.1*2K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在2us以内;
当0.9*4K<=N<=1.1*4K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在4us以内;
当0.9*8K<=N<=1.1*8K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,
这时,LDPC的译码时延可以控制在6us以内;
当0.9*16K<=N<=1.1*16K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在12us以内;
当0.9*32K<=N<=1.1*32K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在20us以内。
示例二:
将阈值直接通过比特数进行表征,且阈值X的取值范围为:128<=X<=2048;当业务对应的码字长度N<=X时,使用RS编码;当业务对应的码字长度N>X时,使用LDPC编码。根据这种选择条件,可以在更小的码字长度时切换到LDPC编码,获得更大的编码增益。此时假设根据上述匹配规则配出的编码方式为LDPC编码时,则编码参数设置方式可为:
当0.9*1K<=N<=1.1*1K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在1us以内;
当0.9*2K<=N<=1.1*2K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在2us以内;
当0.9*4K<=N<=1.1*4K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在4us以内;
当0.9*8K<=N<=1.1*8K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在6us以内;
当0.9*16K<=N<=1.1*16K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N,这时,LDPC的译码时延可以控制在12us以内;
当0.9*32K<=N<=1.1*32K时,使用LDPC(N,k)编码方式,0.8*N<k<0.93*N, 这时,LDPC的译码时延可以控制在20us以内;
此时,当码字字长较小时,切换到小码块的LDPC码,可以降低算法复杂度与处理处理时延;当码字字长较大时,切换到大码块的LDPC码,可以增加编码增益。
示例三:
在本示例中,X通过表达式X=(2n-1)*n进行表征;此时(2n-1)*n个bit的码字长度作为RS编码与LDPC编码之间进行选择的边界条件。当业务对应的码字长度N<=X时,使用RS编码;当N>X时,使用LDPC编码;n取不为0的自然数,例如:
n=7时业务对应的码字长度N等于889比特(也即127个符号数)时,可以采用RS编码,例如可以使用RS(127,111)的编码方式;这时,RS的译码时延可以控制在1s以内;
n=6时,业务对应的码字长度N等于378比特(也即63个符号数)时,可以采用RS编码,例如可以使用RS(63,55)的编码方式,这时,LDPC的译码时延可以控制在0.5us以内;
n=5时,业务对应的码字长度N等于155比特(也即31个符号数)时,可以采用RS编码,例如可以使用RS(31,27)的编码方式,这时,LDPC的译码时延可以控制在0.25us以内。
根据上述方法,当码字字长小于2K bit时,升级后的25G/50G EPON/GOPN系统,可使用更小的RS码字字长,可以降低算法复杂度与译码处理时延;同时,更早地切换到小码块的LDPC码,相对于相关的RS(255,223)增加了编码增益。
显然,本领域的技术人员应该明白,上述本公开实施例的一个或多个模块或一个或多个步骤可以用通用的计算装置来实现,它们可以集中在单个的计算 装置上,或者分布在多个计算装置所组成的网络上,在一实施例中,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在计算机存储介质(只读存储器(Read-Only Memory,ROM)/随机存取存储器(Random Access Memory,RAM)、磁碟、光盘)中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成一个或多个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。所以,本公开不限制于任何特定的硬件和软件结合。
Claims (12)
- 一种无源光纤网络中的编码控制方法,包括:获取待编码的业务对应的码字长度N;在预设的码字长度范围与编码方式对应关系表中,匹配出所述码字长度N对应的编码方式;采用匹配出的所述编码方式对所述业务的数据进行编码。
- 如权利要求1所述的方法,其中:所述码字长度范围与编码方式对应关系表中至少包括两种编码方式,每一种编码方式对应至少一个码字长度范围,所述码字长度N为N个比特。
- 如权利要求2所述的方法,其中,所述码字长度范围与编码方式对应关系表中包括:里德-所罗门RS编码和低密度奇偶校验码编码,与所述RS编码对应的第一码字长度范围,以及与所述低密度奇偶校验码编码对应的第二码字长度范围;所述在预设的码字长度范围与编码方式对应关系表中,匹配出所述码字长度N对应的编码方式包括:将所述码字长度N与所述第一码字长度范围和第二码字长度范围进行匹配;响应于所述码字长度N在所述第一码字长度范围内的匹配结果,确定所述码字长度N对应的编码方式为所述RS编码;响应于所述码字长度N在所述第二码字长度范围内的匹配结果,确定所述码字长度N对应的编码方式为所述低密度奇偶校验码编码。
- 如权利要求3所述的方法,其中,所述第一码字长度范围为码字长度小于或等于预设码字长度阈值X,所述第二码字长度范围为码字长度大于所述预设码字长度阈值X。
- 如权利要求3或4所述的方法,在所述匹配出所述码字长度对应的编码方式之后,采用匹配出的所述编码方式对所业务的数据进行编码之前,还包括:确定匹配出的所述编码方式的编码参数,所述编码参数包括编码后的一个码字所包含的比特数,以及编码前的信息比特数。
- 如权利要求5所述的方法,其中,确定所述编码后的一个码字所包含的比特数包括:将所述业务对应的码字长度N作为编码后的一个码字所包含的比特数。
- 如权利要求5或6所述的方法,其中,在匹配出的所述编码方式为低密度奇偶校验码编码情况下,确定所述编码前的信息比特数包括:确定所述编码前的信息比特数为大于0.8乘以所述码字长度N,且小于0.93乘以所述码字长度N的一个整数。
- 如权利要求5所述的方法,其中,在匹配出的所述编码方式为RS编码的情况下,确定所述编码前的信息比特数包括:确定所述编码前的信息比特数为小于所述码字长度N,且大于0的一个整数。
- 一种无源光纤网络中的编码控制装置,包括:信息获取模块,设置为获取待编码的业务对应的码字长度N;匹配模块,设置为在预设的码字长度范围与编码方式对应关系表中,匹配出所述码字长度N对应的编码方式;控制模块,设置为采用所述匹配模块匹配出的所述编码方式对所业务的数据进行编码。
- 根据权利要求9所述的装置,其中:所述码字长度范围与编码方式对应关系表中至少包括两种编码方式,每一种编码方式对应至少一个码字长度范围,所述码字长度N为N个比特。
- 一种无源光纤网络通信设备,包括处理器、存储器及通信总线;所述通信总线设置为实现所述处理器和所述存储器之间的连接通信;所述处理器设置为执行所述存储器中存储的一个或者多个程序,以实现如权利要求1至8中任一项所述的方法。
- 一种计算机可读存储介质,所述计算机可读存储介质存储有一个或者多个程序,所述一个或者多个程序可被一个或者多个处理器执行,以实现如权利要求1至8中任一项所述的方法。
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