WO2015120631A1 - 光传送网中信号传输的方法、装置及系统 - Google Patents

光传送网中信号传输的方法、装置及系统 Download PDF

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Publication number
WO2015120631A1
WO2015120631A1 PCT/CN2014/072163 CN2014072163W WO2015120631A1 WO 2015120631 A1 WO2015120631 A1 WO 2015120631A1 CN 2014072163 W CN2014072163 W CN 2014072163W WO 2015120631 A1 WO2015120631 A1 WO 2015120631A1
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WIPO (PCT)
Prior art keywords
otl
scrambling code
signal
polynomial
signals
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PCT/CN2014/072163
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English (en)
French (fr)
Inventor
苏伟
Original Assignee
华为技术有限公司
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Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to ES14882683.7T priority Critical patent/ES2669250T3/es
Priority to PCT/CN2014/072163 priority patent/WO2015120631A1/zh
Priority to EP14882683.7A priority patent/EP3107234B1/en
Priority to CN201480003671.1A priority patent/CN105103482B/zh
Publication of WO2015120631A1 publication Critical patent/WO2015120631A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • H04L25/03872Parallel scrambling or descrambling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605Fixed allocated frame structures
    • H04J3/1652Optical Transport Network [OTN]

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to a method, device and system for signal transmission in an optical transport network.
  • Optical TransportNetwonk is a transport network based on wavelength division multiplexing technology in the optical layer organization network, which can provide huge transmission capacity, fully transparent end-to-end wavelength/sub-wavelength connection and carrier-grade Protection is the core technology of the transmission network.
  • OTN has extensive Operation Management and Maintenance (OAM) capabilities, powerful Tandem Connection Monitoning (TCM) capabilities, and Fonwand EnnonConnection (FEC) capabilities. Flexible scheduling and management of capacity services.
  • OAM Operation Management and Maintenance
  • TCM Tandem Connection Monitoning
  • FEC Fonwand EnnonConnection
  • OTU-T Optical Channel TnanspontUnit
  • C is a Roman numeral 100 and n is a variable value.
  • the bit rate of the OTUCn is n times the reference rate, wherein the reference rate is a rate of 100 Gbit/s, for example, any value of 105.258 to 1 12.80384 Gbit/s, preferably, 12.80384 Gbit/s, 1 12.30471 Gbit/s, 1 12.55372 Gbit/s, 105.725952 Gbit/s, any of the four.
  • OTUCn can be optimally configured based on actual optical physical resources to provide a multi-level flexible rate line interface, for example, based on actual needs.
  • Multi-level flexible rate line interface such as 200G, 300G n* 100G.
  • the introduction of OTUCn makes the OTN line interface flexible, and the interface rate is variable based on n. It satisfies the flexible and efficient bearer for multi-service in the future, and at the same time satisfies the operator's demand for refined operation of optical spectrum bandwidth resources.
  • the OTUCn signal needs to be distributed as an n-way OTL (Optical Channel Tnanspont Lane) signal, and the n-way OTL signal is separately performed.
  • FEC encoding processing then splitting each OTL signal in the n OTL signals into 4 logical channels, and multiplexing the split 4*n logical channels into m physical channels for transmission to the receiving end for receiving
  • the terminal recovers n OTL signals from m physical channels, and performs FEC decoding processing on the n OTL signals respectively, and finally reorganizes the n OTL signals into one OTUCn signal.
  • a special pattern (eg, continuous 0 or continuous 1) may occur in the original data stream of the OTUCn signal or the OTL signal, which may cause a length of 0 or a length of 1 in the line.
  • the prior art has not considered or technically to suppress the occurrence of such a long 0 or long 1 situation, and due to the existence of such a long 0 or long 1 condition, the receiving end cannot receive from the receiving end.
  • the clock is extracted from the data stream, and the correct OTUCn signal cannot be recovered. Summary of the invention
  • Embodiments of the present invention provide a method, apparatus, and system for signal transmission in an optical transport network, which can ensure that the receiving end correctly recovers the OTUCn signal.
  • a sending apparatus including:
  • a distribution unit configured to receive an OTUCn optical channel transmission unit signal, and distribute the OTUCn signal as an n-way OTL optical channel transmission tributary signal, where n is an integer greater than or equal to 2;
  • a scrambling unit configured to generate a polynomial based on the n non-correlated scrambling codes, respectively perform scrambling processing on the n OTL signals; wherein, the n uncorrelated scrambling code generating polynomials are n non-common factors Scrambling code generation polynomial;
  • a transmitting unit configured to transmit the scrambled OTL signal to the receiving device by using the subcarrier.
  • the sending apparatus further includes:
  • An obtaining unit configured to acquire n uncorrelated scrambling codes according to the number of OTL signals n to generate a polynomial.
  • the acquiring unit is specifically configured to: obtain n uncorrelated scrambling code generation polynomials from the pre-configured scrambling code generation polynomial library according to the number of the OTL signals n; wherein the scrambling code generation polynomial library stores at least n Scrambling code generation polynomial.
  • the acquiring unit is specifically configured to: determine a highest order of the scrambling code generator polynomial; determine all prime numbers that are smaller than a highest order of the scrambling code generator polynomial; generate n uncorrelated scrambling codes according to the number of the OTL signals n A polynomial is generated, wherein the order of all items except the highest order item and the constant item in each scrambling code generation polynomial is a number in all of the prime numbers, and any two polynomials are different.
  • the X is an item other than the highest order monomial and constant term in the scrambling code generator polynomial, according to the OTL
  • the branch number corresponding to the signal is determined by the branch number r; wherein the b is the highest order of the polynomial pre-configured or sent to the transmitting device by the network manager, and the b is a natural number.
  • the transmitting unit includes:
  • a splitting module configured to receive each scrambled OTL letter obtained by the scrambling unit The number is split into c logical channels, and a total of c*n logical channels are obtained; wherein, c is a natural number;
  • a first multiplexing module configured to multiplex the c*n logical channel split by the splitting module into an m-way multiplexed signal
  • a first transmitting module configured to transmit the m-way multiplexed signal multiplexed by the multiplexing module to the receiving device by using a sub-carrier.
  • the first multiplexing module includes at least one multiplexing submodule, where the multiplexing submodule is used The at least two logical channels are multiplexed into one multiplexed signal, wherein the two logical channels are not separated by the OTL signal after the same path scrambling code.
  • the transmitting unit includes:
  • a second multiplexing module configured to multiplex the n-channel scrambled OTL signal into an m-channel multiplexed signal
  • a second transmitting module configured to transmit the m-path multiplexed signal multiplexed by the multiplexing module to the receiving device by using a sub-carrier.
  • the sending apparatus further includes :
  • Corresponding relationship management unit configured to store a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials; or to generate the n-way OTL signals and the n uncorrelated scrambling codes Generating a correspondence between the polynomials; or for obtaining, from the network manager, a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials;
  • the correspondence relationship describes a scrambling code generation polynomial used for each OTL signal when scrambling each OTL signal.
  • the scrambling unit is specifically configured to perform a scrambling process by selecting a corresponding scrambling code generation polynomial for each OTL signal according to the correspondence.
  • the corresponding relationship management unit is further configured to: The correspondence is sent to the network manager or the receiving device.
  • a receiving apparatus including:
  • a first acquiring unit configured to acquire an n-channel OTL optical channel transmission branch signal, where the n-channel OTL signal is distributed by a signal of an OTUCn optical channel transmission unit, where n is greater than or equal to 2;
  • a descrambling code unit configured to generate a polynomial based on the n non-correlated scrambling codes, and perform descrambling processing on the n OTL signals respectively; wherein, the n uncorrelated scrambling code generating polynomials are n non-public The scrambling code generation polynomial of the factor;
  • a recombining unit configured to reassemble the n-channel OTL signal descrambled by the descrambling code unit into one OTUCn signal.
  • the receiving device further includes:
  • a second acquiring unit configured to acquire n uncorrelated scrambling code generation polynomials according to the number n of OTL signals.
  • the second acquiring unit is specifically configured to: obtain n uncorrelated scrambling code generation polynomials from the pre-configured scrambling code generation polynomial library according to the number of OTL signals n; wherein the scrambling code generation polynomial library stores at least n A non-correlated scrambling code generation polynomial.
  • the second obtaining unit is specifically configured to: determine a highest order of the scrambling code generation polynomial; determine all prime numbers that are smaller than a highest order of the scrambling code generation polynomial; generate n uncorrelated according to the number N of the OTL signals Scrambling code generation polynomial, where each The order of all items except the highest order term and the constant term in the scrambling code generator polynomial is the number in all the prime numbers, and any two polynomials are different.
  • the X is an item other than the highest order monomial and constant term in the scrambling code generator polynomial, according to the OTL
  • the branch number r corresponding to the signal is determined; wherein the b is the highest order of the polynomial pre-configured or sent to the receiving device by the network manager, and the b is a natural number.
  • the first acquiring unit is specifically configured to: demultiplex the received m-way branch multiplexed signal, recover a c*n-way logical channel, and restore the c*n-way logical channel to an n-way OTL.
  • the signal; or, the received m-path multiplexed signal is demultiplexed and restored to an n-way OTL signal.
  • the receiving device further includes :
  • a third obtaining unit configured to acquire a branch number of each OTL signal, and a polynomial number of each scrambling code generating polynomial;
  • a searching unit configured to find a scrambling code generation polynomial corresponding to each OTL signal according to the branch number of each OTL signal and the polynomial number of the polynomial generated by each scrambling code.
  • the receiving device further includes :
  • a correspondence management unit configured to store a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials, or to use from a network manager or
  • the transmitting device that sends the OTUCn signal acquires a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials, where the correspondence relationship describes when scrambling the OTL signal for each ORT signal
  • the descrambling code unit is specifically configured to perform a descrambling code processing by selecting a corresponding scrambling code generation polynomial for each OTL signal according to the correspondence.
  • a third aspect provides a method for signal transmission in an optical transport network, including:
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • the n-channel OTL signals are respectively subjected to scrambling code processing; wherein, the n uncorrelated scrambling code generating polynomials are n scrambling code generating polynomials without common factors;
  • the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the method further includes:
  • the acquiring the n uncorrelated scrambling codes according to the number n of the OTL signals, the generating polynomial specifically includes:
  • the acquiring the n non-correlated scrambling codes according to the number of OTL signals, the generating polynomial specifically includes:
  • the X is an item other than the highest order monomial and constant term in the scrambling code generator polynomial, according to the OTL
  • the branch number corresponding to the signal is determined by the branch number r; wherein the b is the highest order of the polynomial pre-configured or sent to the transmitting device by the network manager, and the b is a natural number.
  • the transmitting of the OTL signal to the receiving device by using the subcarrier includes: splitting each scrambled OTL signal into c logical channels, and obtaining a c*n logical channel; wherein, the c is a natural number;
  • the c*n path logical channel is multiplexed into an m-way multiplexed signal
  • each of the m-branch multiplexed signals is multiplexed by at least two paths
  • the logical channel is multiplexed; wherein the two logical channels are not logical channels split by the OTL signal after the same path scrambling code.
  • the The transmitting of the OTL signal to the receiving device by using the subcarrier specifically includes: multiplexing the n-channel scrambled OTL signal into an m-way multiplexed signal;
  • the method further includes:
  • the correspondence relationship describes a scrambling code generation polynomial used for each OTL signal when scrambling each OTL signal.
  • the scrambling code generating polynomial according to each of the n non-correlated scrambling code generating polynomials respectively includes: selecting a corresponding scrambling code generation polynomial for each channel OTL signal according to the correspondence relationship to perform scrambling code processing.
  • a fourth aspect provides a method for transmitting a signal in an optical transport network, comprising: acquiring an n-channel OTL optical channel transmission tributary signal, wherein the n-channel OTL signal is distributed by a OTUCn optical channel transmission unit signal And n is greater than or equal to 2; generating polynomials based on n uncorrelated scrambling codes, respectively performing descrambling processing on the n OTL signals; wherein, the n uncorrelated scrambling code generating polynomials are n non-common factors Scrambling code generator polynomial;
  • the n-channel OTL signal after the descrambling code is recombined into one OTUCn optical channel transmission unit signal.
  • the method further includes:
  • the acquiring the n uncorrelated scrambling codes according to the number of OTL signals, the generating polynomial specifically includes:
  • the acquiring the n uncorrelated scrambling codes according to the number of OTL signals specifically includes:
  • the branch number r corresponding to the signal is determined; wherein the b is the highest order of the polynomial pre-configured or sent to the receiving device by the network manager, and the b is a natural number.
  • the optical channel transmission branch signal specifically includes:
  • the branch multiplexed signal is demultiplexed and restored to n-way OTL signals.
  • the acquiring the OTL After the optical channel transmits the tributary signal it also includes:
  • the seventh possible implementation manner of the fourth aspect further includes:
  • the manager obtains a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials;
  • the correspondence relationship describes a scrambling code generation polynomial used for each OTL signal when scrambling each OTL signal.
  • a sending device including:
  • a communication unit configured to communicate with an external device
  • the processor is used to:
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • n is an integer greater than or equal to 2
  • the n-channel OTL signals are respectively subjected to scrambling code processing; wherein, the n uncorrelated scrambling code generating polynomials are n scrambling code generating polynomials without common factors;
  • the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the processor is further configured to acquire n uncorrelated scrambling code generation polynomials according to the number n of OTL signals.
  • the processor acquires n uncorrelated scrambling code generation polynomials according to the number of OTL signals n: acquiring n non-correlated scrambling code generation polynomials from the preconfigured scrambling code generation polynomial library according to the number of the OTL signals n And storing, in the scrambling code generation polynomial library, at least n non-correlated scrambling code generation polynomials.
  • the processor acquires n uncorrelated scrambling codes according to the number of OTL signals n to generate a polynomial specifically for: determining a highest order of the scrambling code generator polynomial; determining less than the disturbance Generating all prime numbers of the highest order of the polynomial; generating n uncorrelated scrambling code generator polynomials according to the number N of the OTL signals; wherein each scrambling code generates a polynomial other than the highest order term and the constant term
  • the order of all terms is the number of all the prime numbers, and any two polynomials are different.
  • the branch number corresponding to the signal is determined by the branch number r; wherein the b is the highest order of the polynomial pre-configured or sent to the transmitting device by the network manager, and the b is a natural number.
  • the processor transmits the scrambled OTL signal to the receiving device through the subcarrier, and is specifically configured to: split each scrambled OTL signal into c logical channels, and obtain a c*n logical channel;
  • the c is a natural number; the c*n way logical channel is multiplexed into an m-way multiplexed signal; and the m-way multiplexed signal is transmitted to the receiving device through a sub-carrier.
  • each of the m-branch multiplexed signals is multiplexed by at least two paths
  • the logical channel is multiplexed; wherein the two logical channels are not logical channels split by the OTL signal after the same path scrambling code.
  • the processor transmits the scrambled OTL signal to the receiving device through the subcarrier, and is specifically configured to: multiplex the n-channel scrambled OTL signal into an m-way multiplex signal; and save the m-path tributary Signals are transmitted through the subcarriers to the receiving device.
  • the processor is further configured to store a correspondence between the n OTL signals and the n uncorrelated scrambling code generation polynomials; or generate the n OTL signals and the n uncorrelated scrambling codes to generate a correspondence between the polynomials; or obtaining, from the network manager, a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials;
  • the correspondence relationship describes a scrambling code generation polynomial used for each OTL signal when scrambling each OTL signal.
  • the processor generates a polynomial for each scrambling code in the polynomial based on the n uncorrelated scrambling codes
  • the n-channel OTL signals are respectively subjected to scrambling processing, and are specifically configured to: perform scrambling processing by selecting a corresponding scrambling code generation polynomial for each OTL signal according to the correspondence relationship.
  • a receiving device including:
  • a communication unit configured to communicate with an external device
  • the processor is used to:
  • an n-way OTL optical channel transmission branch signal wherein the n-channel OTL signal is distributed by a signal of an OTUCn optical channel transmission unit, where n is greater than or equal to 2; generating a polynomial based on n uncorrelated scrambling codes, The n-channel OTL signals are respectively subjected to descrambling code processing; wherein, the n uncorrelated scrambling code generating polynomials are n scrambling code generating polynomials having no common factor;
  • the n-channel OTL signal after the descrambling code is recombined into one OTUCn optical channel transmission unit signal.
  • the processor is further configured to acquire n uncorrelated scrambling code generation polynomials according to the number n of OTL signals.
  • the third in the sixth aspect Possible implementations:
  • the processor acquires n uncorrelated scrambling code generation polynomials according to the number of OTL signals n: acquiring n non-correlated scrambling code generation polynomials from the preconfigured scrambling code generation polynomial library according to the number of the OTL signals n And storing at least n non-correlated scrambling code generator polynomials in the scrambling code generation polynomial library.
  • the processor obtains n uncorrelated scrambling code generation polynomials according to the number of OTL signals n for: determining a highest order of the scrambling code generation polynomial; determining all prime numbers that are smaller than the highest order of the scrambling code generation polynomial; Generating n the number of OTL signals to generate n uncorrelated scrambling code generator polynomials; wherein, the order of all items except the highest order term and the constant term in each scrambling code generator polynomial is all of the prime numbers The number, and any two polynomials are not the same.
  • the branch number r corresponding to the signal is determined; wherein the b is the highest order of the polynomial pre-configured or sent to the receiving device by the network manager, and the b is a natural number.
  • the processor acquires an n-channel OTL optical channel transmission tributary signal for: demultiplexing the received m-way branch multiplexed signal, recovering a c*n-way logical channel, and the c*n The logical channel of the circuit is restored to the n-way OTL signal; or the received m-branch multiplexed signal is demultiplexed and restored to the n-way OTL signal.
  • the sixth possible implementation manner of the sixth aspect Medium is
  • the processor is further configured to acquire a branch number of each OTL signal, and a polynomial number of each scrambling code generating polynomial; generate a polynomial according to the branch number of each OTLOTL signal and each scrambling code Polynomial number, find the scrambling code generator polynomial corresponding to each OTL signal.
  • a seventh possible implementation manner of the sixth aspect And storing a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials; or generating a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials; or Obtaining, by the network manager, a correspondence between the n-way OTL signals and the n uncorrelated scrambling code generation polynomials; wherein the correspondence relationship describes each of the OTLs when scrambling each OTL signal The scrambling code used in the signal generates a polynomial.
  • a signal transmission system in an optical transmission network includes: a transmitting device and a receiving device, wherein the transmitting device is any one of the transmitting devices, and the receiving device is the foregoing A receiving device.
  • the eighth aspect provides a signal transmission system in an optical transmission network, where the system includes: a sending device and a receiving device, where the sending device is any one of the foregoing sending devices, and the receiving device is any one of the foregoing receiving devices. .
  • the method, device and system for signal transmission in an optical transport network provided by embodiments of the present invention generate a polynomial generation strategy by setting the same scrambling code at the transmitting end and the receiving end, so that the transmitting end and the receiving end can generate a polynomial according to the scrambling code.
  • the generation strategy generates a corresponding scrambling code generation polynomial for each OTL signal, so that the OTL signal can be scrambled or descrambled according to the corresponding scrambling code generation polynomial.
  • the transmitting end only transmits the n-way OTL signal to the receiving end, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, so that the multi-channel OTL signal is performed.
  • the length 0 and length 1 of the original data stream of the OTL signal are expanded, and the receiver cannot recover the correct signal data stream.
  • a potential solution is Before the OTUCn signal is split into OTL signals, the OTUCn signal is directly scrambled, so that at the beginning, the long 0 long 1 situation that may occur in the original data stream of the OTUCn signal is broken, but due to the OTUCn rate Denaturation, which makes it difficult to design and implement, cannot be achieved in terms of implementation.
  • Another potential solution is to use the same scrambling code generation polynomial for scrambling the split n-way OTL signals. However, when multiple OTL signals are processed in parallel using the same scrambling code, the difference is different. When the logical channel split by the OTL signal is multiplexed into one physical channel, a long 0 or a long 1 may occur in the data stream transmitted on the physical channel.
  • the present invention performs scrambling processing on an n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal by using a scrambling code generation polynomial to cause interference.
  • the data stream of the OTL signal after the code not only breaks the situation of continuous 0 or continuous 1 in the original data stream, but also because the n scrambling code generation polynomials are non-correlated, even if they are split by different OTL signals.
  • the logical channel is multiplexed into one physical channel, the data stream transmitted on the physical channel does not appear to be 0 or longer, which ensures that the receiving end can correctly recover the OTUCn signal.
  • FIG. 1 is a schematic diagram of a frame structure of an OTUCn frame according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a frame structure of another OTUCn frame according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a frame structure of an OTL frame according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a frame structure of another OTL frame according to an embodiment of the present invention
  • 5 is a schematic diagram of an apparatus for transmitting a device according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another apparatus for transmitting a device according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a device for transmitting a device according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a device for receiving a device according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of another apparatus for receiving a device according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of signal transmission in an optical transport network according to an embodiment of the present invention; Schematic diagram of the method;
  • FIG. 13 is a schematic flowchart diagram of another method for signal transmission in an optical transport network according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart diagram of still another method for signal transmission in an optical transport network according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of an OTL signal scrambling circuit according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of another OTL signal scrambling circuit according to an embodiment of the present invention.
  • 17 is a schematic diagram of a 16-channel OTLC 1.7 logical channel multiplexing for a 4-way physical channel according to an embodiment of the present invention
  • FIG. 18 is a schematic flowchart diagram of a method for signal transmission in another optical transport network according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of a device for transmitting a device according to another embodiment of the present invention.
  • FIG. 20 is a schematic diagram of a device for receiving a device according to another embodiment of the present invention.
  • FIG. 21 is a schematic diagram of a system of a signal transmission system in an optical transport network according to an embodiment of the present invention.
  • FIG. 22 is a schematic diagram of a system of a signal transmission system in another optical transmission network according to an embodiment of the present invention. Detailed ways
  • the embodiments of the present invention are applied to OTN, and OTN can realize flexible scheduling and management of large-capacity services.
  • OTN can realize flexible scheduling and management of large-capacity services.
  • traditional OTN technologies cannot meet the continuous growth of future bandwidth. Therefore, the current SG15/ITU-T is discussing the development of a flexible line rate OTUCn, which can be distributed as n OTL signals.
  • the rate of each OTL signal is 100 Gbit/s.
  • the OTL signal at a rate of 100 Gbit/s is called an OTLC1 signal, and the n OTLC1 signals are sequentially numbered as OTLC1 #1, OTLC1 #2, OTLC1 #n.
  • n ODLC1 signals
  • Optical Channel Payload Lane-Cl optical channel payload branch-CI
  • C in OTUCn, OTLCl, 0DLC1, OPLC1 is a Roman numeral 100.
  • the OTUCn frame structure of the OTUCn signal in the embodiment of the present invention may specifically be the following two frame structures:
  • the frame structure of the first type of OTUCn frame is as shown in FIG. 1.
  • the frame structure of the OTUCn frame is 4 rows and 4080*n columns, wherein the columns 1 to 7n of the 1st row indicate the overhead of the frame header, and the 1st row (7n) +l ) ⁇ 14n ⁇ 'J is the open 4 area of OTUCn, the 1 ⁇ 4 line of 1 ⁇ 4n ⁇ 'J is the overhead area of ODUCn, the 1st to 4th line of (14n+l) ⁇ 16n is OPUCn In the overhead area, the 1st to 4th rows (16n+l) to 3824n are the OPUCn payload areas, and the 1st to 4th lines (3824n+l) to 4080n ⁇ 'J are the OTUCn FEC check areas.
  • the frame structure of the OTL frame corresponding to the split OTL signal is as shown in FIG. 2, and the OTL frame structure is 4 rows and 4080 columns, where The 1st to 7th columns of the 1st line indicate the overhead of the frame header, the 8th to 14th columns of the 1st row are the overhead areas of the OTL, and the 1st to 14th columns of the 2nd to 4th rows are the overhead areas of the ODL, the 1st to 4th rows ⁇ I 15 ⁇ 16 ⁇ 'J is OPU ⁇ H, lines 1 ⁇ 4 ⁇ I 17 ⁇ 3824 ⁇ 'J is the OPU payload area, and 3825 ⁇ 4080 of the 1st to 4th lines are listed as the ETU's FEC check area.
  • the frame structure of the second OTUCn frame is as shown in FIG. 3.
  • the frame structure of the OTUCn frame has no FEC check area, and the frame structure of the OTUCn frame is 4 lines 3824*n ⁇ 'J, where the 1st frame is ⁇ 7n ⁇ 'J indicates the overhead for the gimmick, the first ##(7n+l) ⁇ 14n ⁇ 'J is the overhead area of OTUCn, and the second to fourth line of l ⁇ 14n ⁇ 'J is the overhead area of ODUCn, Lines 1 to 4 (14n+l) ⁇ 16n ⁇ 'J are the overhead areas of OPUCn, and lines (16n+l) to 3824n of the 4th line are OPUCn payload areas.
  • the frame structure of the OTL frame corresponding to the split OTL signal is as shown in FIG. 4, and the OTL frame structure is an FEC-free check area.
  • the frame structure of the OTL frame is 4 rows 3824 ⁇ l, wherein the 1st to 7th columns of the 1st row indicate the overhead of the frame header, the 8th to 14th columns of the 1st row are the overhead areas of the OTL, and the 1st to 4th rows of the 1st to 4th rows 14 columns are the overhead areas of the ODU, 15 to 16 of the 1st to 4th rows are the overhead areas of the OPU, and 17 to 3824 of the 1st to 4th rows are the OPU payload areas.
  • the present invention provides a method, apparatus and system for signal transmission in an optical transport network.
  • an embodiment of the present invention provides a transmitting apparatus.
  • the transmitting apparatus 1 specifically includes: a distributing unit 11, a scrambling unit 12, and a transmitting unit 13, where:
  • the distribution unit 11 is configured to receive the OTUCn optical channel transmission unit signal, and distribute the OTUCn signal as an n-way OTL signal, where n is an integer greater than or equal to 2.
  • the scrambling unit 12 is configured to generate a polynomial based on the n uncorrelated scrambling codes, and respectively perform scrambling processing on the corresponding OTL signals.
  • the above-mentioned n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • the transmitting unit 13 is configured to transmit the OTL signal scrambled by the 12 scrambling unit to the receiving device through the subcarrier.
  • the transmitting unit 13 before transmitting the scrambled OTL signal to the receiving device through the m subcarriers, the transmitting unit 13 needs to first split each OTL signal in the n OTL signals into a c-channel logical channel (parameter c For the natural number, the c*n logical channel is bit-multiplexed into m-branch multiplexed signals, and finally transmitted to the receiving device through the m-channel subcarriers.
  • the transmitting device multiplexes the c*n channel logical channel into the m-channel multiplexed signal in two ways: mode 1: all logical channels multiplexed into one-way multiplexed signal are Part of the logical channel or all logical channels in the c-channel logical channel formed by splitting the OTL signal; mode 2, the logical channel multiplexed into one-way multiplexed signal includes at least two logical channels, and the two logics The channel is not a logical channel split by the same OTL signal.
  • the logical channel multiplexed into one branch multiplexed signal includes logical channel 1 and logical channel 2, wherein logical channel 1 is composed of OTL# l Split logical channel, logical channel 2 is a logical channel split by OTL#2 and separated by two different OTL signals.
  • the transmitting device may perform FEC encoding processing on the n-channel OTL signals by using the FEC encoding unit in the transmitting device.
  • the foregoing FEC coding is a general error correction technology, and is generally used for precoding processing on the data stream before transmitting the data stream, which can correct errors introduced during the transmission process and ensure that the data is consistent.
  • NS Red Solomon
  • the transmitting apparatus provided by the embodiment of the present invention distributes the OTUCn signal into n-way OTL tributary signals, and generates polynomials according to n uncorrelated scrambling codes, respectively scrambles the corresponding OTL signals, and finally scrambles the codes. After the OTL signal pass The carrier is transmitted to the receiving device.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, thereby causing possible transmission in the line transmission.
  • a long 0 or a long 1 occurs, which in turn causes the receiver to fail to recover the correct signal data stream.
  • the solution provided by the present invention performs scrambling processing on the n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, and scrambling the OTL.
  • the data stream of the signal breaks the continuous 0 or continuous 1 occurrence in the original data stream, and can avoid the continuous 0 or continuous occurrence when the logical channel split by different OTL signals multiplexes one branch multiplexed signal. In the case of 1, thus avoiding the occurrence of long 0 or long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream.
  • the transmitting apparatus 1 further includes: an acquiring unit 14 configured to acquire n uncorrelated scrambling code generation polynomials according to the number n of OTL signals.
  • the obtaining unit 14 acquires n unrelated ⁇ ⁇ code generator polynomials according to the number of OTL signals n, which can be implemented in the following two ways:
  • the first implementation manner The obtaining unit 14 acquires n uncorrelated scrambling code generator polynomials based on the pre-established scrambling code generation polynomial library.
  • the acquiring unit 14 is specifically configured to: obtain, according to the number of OTL signals, ⁇ from the pre-configured scrambling code generation polynomial library to obtain n uncorrelated scrambling code generation polynomials.
  • the scrambling code generation polynomial library stores at least n non-correlated scrambling code generator polynomials.
  • the second implementation manner The obtaining unit 14 acquires n uncorrelated scrambling code generation polynomials based on generating a polynomial generation strategy through a pre-configured scrambling code.
  • the obtaining unit 14 is specifically configured to: determine a highest order of the scrambling code generator polynomial; determine all prime numbers that are less than the highest order of the scrambling code generator polynomial; and generate n uncorrelated scrambling codes according to the OTL signal number ⁇ A polynomial is generated, wherein the order of all items except the highest order item and the constant item in each scrambling code generation polynomial is a number in all of the prime numbers, and any two polynomials are different.
  • the parameter b is the highest order of the polynomial of the scrambling code, and is pre-configured or sent to the transmitting device by the network manager, and the parameter b is a natural number.
  • each OTL signal can be assigned a branch number value to distinguish different OTL signals. How to assign a number value is not limited in the present invention.
  • an integer from 1 to n can be used as an n-way OTL signal, respectively.
  • n different integers may be randomly selected as the branch number value of the n-way OTL signal, and the ID value of the corresponding OTUCn in the n-way OTL signal frame may be used as the branch number value of the n-way OTL signal.
  • the transmitting unit 13 includes: a splitting module 13 1 a, a multiplexing module 132a, and a transmitting module 133a, where:
  • the splitting module 143 a is configured to split each scrambled OTL signal obtained by the scrambling unit 12 into c logical channels, and obtain a c*n logical channel; wherein c is a natural number.
  • the first multiplexing module 132a is configured to multiplex the c*n path logical channel split by the splitting module 13 1 a into an m-way branch multiplexing signal.
  • the multiplexing module 132a multiplexes the c*n logical channel into the m-way multiplexed signal, and divides the c*n logical channel into m equal parts in any combination.
  • the equal part contains (c*n)/m logical channels, which multiplex the c*n/m logical channels in each aliquot into one multiplexed signal.
  • the above parameter c is a natural number.
  • any one of the following two methods may be used: mode one, being multiplexed into one-way branch multiplexing All logical channels of the signal are part of the logical channels or all logical channels of the c logical channels split by one OTL signal; mode 2, the logical channel multiplexed into one multiplexed signal contains at least two The logical channel is not a logical channel split by the same OTL signal.
  • the logical channel multiplexed into one multiplexed signal includes logical channel 1 and logical channel 2, where The logical channel 1 is a logical channel split by OTL# l, and the logical channel 2 is a logical channel split by OTL#2, which is split by two different OTL signals.
  • the first multiplexing module 132a includes at least one multiplexing submodule, and the second logical channel is multiplexed into a one-way multiplexed signal.
  • the transmitting module 133a is configured to transmit the m-way multiplexed signal multiplexed by the multiplexing module 132a to the receiving device via the m-channel subcarrier.
  • the transmitting unit 13 includes: a second multiplexing module 13 1b and a second transmitting module 132b, where:
  • the second multiplexing module 13 1b is configured to multiplex the n-channel scrambled OTL signal into an m-way multiplexed signal.
  • the second transmitting module 132b is configured to transmit the m-way multiplexed signal multiplexed by the second multiplexing module 13 1 b to the receiving device through the sub-carrier.
  • the sending apparatus 1 further includes: a first numbering unit 15, a second numbering unit 16, and an allocating unit 17, wherein:
  • the first numbering unit 15 is configured to acquire a branch number of each OTL signal in the n-way OTL signal, where each OTL signal corresponds to one branch number.
  • the second numbering unit 16 is configured to encode the n uncorrelated scrambling code generation polynomials, wherein each scrambling code generation polynomial corresponds to a polynomial number.
  • the allocating unit 17 is configured to generate a polynomial of the polynomial according to the branch number of each OTL signal and each scrambling code, and allocate a corresponding polynomial for each OTL signal.
  • the sending device 1 may further include:
  • the correspondence relationship management unit 18 is configured to store a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials; or to generate a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials Or for obtaining a correspondence between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials described above from the network manager.
  • the scrambling unit 13 in the sending device 1 may select a corresponding interference for each OTL signal according to the correspondence relationship from the corresponding relationship management unit.
  • the code generator polynomial is used for scrambling.
  • the correspondence management unit may be further configured to send the correspondence to the network manager or the receiving device.
  • the network manager may send to the receiving device, so that the receiving device selects a corresponding scrambling code generation polynomial for each 0 T L signal according to the correspondence relationship to perform descrambling code.
  • a transmitting apparatus performs scrambling processing on a corresponding OTL signal by distributing an OTUCn signal into an n-way OTL signal and generating a polynomial for each scrambling code according to n uncorrelated scrambling codes. Finally, the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, thereby causing possible transmission in the line.
  • a long 0 or a long 1 occurs, which in turn causes the receiving end to fail to recover the correct signal data stream.
  • the solution provided by the present invention performs scrambling processing on the n-channel OTL signal by using the n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, and scrambling the OTL.
  • the data flow of the signal breaks the continuous 0 or continuous 1 occurrence in the original data stream, and can avoid the continuous 0 or continuous occurrence when the logical channel split by different OTL signals multiplexes one branch multiplexed signal. In the case of 1, thus avoiding the occurrence of a long 0 or a long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream.
  • the unit division of the transmitting apparatus in the embodiment of the present invention is an exemplary description. In practice, there may be a plurality of unit dividing methods to constitute the transmitting apparatus of the embodiment of the present invention.
  • the embodiment of the present invention further provides a receiving apparatus.
  • the receiving apparatus 2 includes: a first acquiring unit 21, a descrambling code unit 22, and a recombining unit 23. , among them:
  • the first obtaining unit 21 is configured to acquire an n-channel OTL optical channel transmission tributary signal, wherein the n-channel OTL signal is distributed by an OTUCn optical channel transmission unit signal, and n is greater than or equal to 2.
  • the descrambling code unit 22 is configured to generate a polynomial based on n uncorrelated scrambling codes, for n
  • the path OTL signal is separately subjected to descrambling code processing.
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • the recombining unit 23 is configured to reassemble the n-channel OTL signal after descrambling the descrambling code unit 22 into one OTUCn optical channel transmission unit signal.
  • the descrambling code unit 22 in the receiving device performs descrambling processing on the OTL signal corresponding to each scrambling code generation polynomial in the n uncorrelated scrambling code generation polynomials, and may also pass through the receiving device.
  • the decoding unit performs FEC decoding processing on the n-way OTL signals after the descrambling code.
  • the foregoing FEC coding is a general error correction technology, and is generally used for decoding the received data stream at the receiving end, and can correct errors introduced during the transmission process to ensure consistent data transmission and reception.
  • NS eed Solomon
  • the receiving apparatus acquires an n-way OTLCn optical channel transmission tributary signal, and generates a polynomial for each scrambling code according to n uncorrelated scrambling codes, and respectively descrambles the corresponding OTL signal.
  • the code is processed, and the n-channel OTL signal after the descrambling code is recombined into one OTUCn signal.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling and descrambling processing on the OTUCn signal or the split OTL signal, thereby causing the line.
  • a long 0 or a long 1 may occur in the transmission, and the receiver cannot recover the correct signal data stream.
  • the solution provided by the present invention performs descrambling code processing on the n-channel OTL signal by using the n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, after scrambling
  • the data stream of the OTL signal breaks the situation of continuous 0 or continuous 1 in the original data stream, and can also be avoided by different OTLs.
  • the logical channel split by the signal multiplexes the continuous 0 or the continuous 1 when the multiplexed signal of one branch is multiplexed, thereby avoiding the occurrence of long 0 or long 1 in the line, thereby ensuring that the receiving end can recover correctly. data flow.
  • the receiving apparatus 2 further includes: a second acquiring unit 24, configured to acquire n uncorrelated scrambling code generation polynomials according to the number of OTL signals n.
  • the second obtaining unit 24 acquires n non-related scrambling code generator polynomials based on the number of OTL signals n, which may be implemented in the following two ways:
  • the second obtaining unit 24 generates n non-correlated scrambling code generator polynomials based on the pre-established scrambling code generation polynomial library.
  • the second obtaining unit 24 is specifically configured to: obtain n uncorrelated scrambling code generation polynomials from the preconfigured scrambling code generation polynomial library according to the number of OTL signals n.
  • the scrambling code generation polynomial library stores at least n non-correlated scrambling code generation polynomials.
  • the second obtaining unit 24 acquires n uncorrelated scrambling code generation polynomials based on a pre-configured scrambling code generation polynomial generation strategy.
  • the second obtaining unit 24 is specifically configured to: determine a highest order of the scrambling code generator polynomial; determine all prime numbers that are less than the highest order of the scrambling code generator polynomial; generate n uncorrelated according to the number of OTL signals n
  • the scrambling code generates a polynomial, wherein the order of all items except the highest order item and the constant item in each scrambling code generation polynomial is the number in all the prime numbers, and any two polynomials are different.
  • the X is the highest order in the polynomial generator polynomial.
  • the items other than the monomial and constant terms are determined according to the branch number r of the OTL signal; wherein the parameter b is the highest order of the polynomial of the scrambling code, and is pre-configured or sent to the transmitting device through the network manager. And the parameter b is a natural number.
  • the tributary number value of each OTL signal can be obtained from the overhead of each OTL signal.
  • the first obtaining unit 21 is specifically configured to: demultiplex the received m-path multiplexed signal, recover the c*n logical channel, and restore the c*n logical channel to the n-channel. OTL signal; or, the received m-way branch multiplexed signal is performed Demultiplexed and restored to n-way OTL signals.
  • the parameter c above is consistent with the parameter c in the transmitting end, and the parameter c is a natural number.
  • the receiving apparatus 2 further includes: a third obtaining unit 25 and a searching unit 26, where:
  • the third obtaining unit 25 is configured to acquire the branch number of each OTL signal, and the polynomial number of each scrambling code generation polynomial.
  • the searching unit 26 is configured to find a scrambling code generator polynomial corresponding to each OTL signal according to the branch number of each OTL signal and the polynomial number of each scrambling code generating polynomial.
  • the receiving device 2 may further include:
  • the correspondence relationship management unit 27 is configured to store a correspondence between the n OTL signals and the n unrelated scrambling code generation polynomials; or acquire the n OTL signals and the information from the network manager or the transmitting device that sends the OTUCn signal Corresponding relationships of n uncorrelated scrambling code generator polynomials are described, wherein the above correspondence relationship describes a scrambling code generator polynomial used in scrambling each OTL signal.
  • the descrambling code unit 23 is specifically configured to perform a descrambling code process by selecting a corresponding scrambling code generation polynomial for each OTL signal according to the above correspondence.
  • the receiving apparatus acquires an n-way OTLCn optical channel transmission tributary signal, and generates a polynomial for each scrambling code according to n uncorrelated scrambling codes, and respectively descrambles the corresponding OTL signal.
  • the code is processed, and the n-channel OTL signal after the descrambling code is recombined into one OTUCn signal.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling and descrambling processing on the OTUCn signal or the split OTL signal, thereby causing the line.
  • a long 0 or a long 1 may occur in the transmission, which may result in the receiver not being able to recover the correct signal data stream.
  • the solution provided by the present invention performs descrambling processing on the n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, after scrambling
  • the data stream of the OTL signal breaks the continuous 0 or continuous 1 occurrence in the original data stream, and can avoid the continuous 0 or the multiplexed signal of the multiplexed signal multiplexed by the logic channel split by different OTL signals.
  • the case of continuous 1 avoids the occurrence of long 0 or long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream.
  • the unit division of the receiving apparatus in the embodiment of the present invention is an exemplary description. In practice, there may be a plurality of unit dividing methods to constitute the receiving apparatus of the embodiment of the present invention.
  • An embodiment of the present invention provides a method for transmitting a signal in an optical transport network, as shown in FIG. 12, which is implemented by a transmitting device. Specifically, this embodiment is mainly directed to a process of transmitting a signal to a receiving end by a transmitting end, the optical transport network.
  • the method for transmitting a signal specifically includes the following steps:
  • the transmitting device receives the OTUCn optical channel transmission unit signal.
  • the transmitting device distributes the OTUCn signal as an n-way OTLCn optical channel transmission tributary signal.
  • n is an integer greater than or equal to 2.
  • the OTUCn signal is distributed as an n-way OTL signal.
  • the OTL signal is a signal of a rate of 100 Gbit/s, which is called OTLC1.
  • the n-way OTLC1 signal is numbered as OTLCl #l, OTLC1 #2, OTLC1 #n. Located on the first line of each OTLC1 signal, the first ⁇ l 1 ⁇ ! ! ⁇ 'J's OTUCn ID overhead, carrying the number information of the OTLC1.
  • the transmitting device can perform forward error correction (FEC) encoding processing on the n-channel OTL signals.
  • FEC forward error correction
  • the foregoing FEC coding is a general error correction technology, and is generally used for precoding processing on the data stream before transmitting the data stream, which can correct errors introduced during the transmission process and ensure consistent data transmission and reception.
  • the transmitting device generates a polynomial for each scrambling code based on the n uncorrelated scrambling code generation coefficients, and performs scrambling processing on the corresponding OTL signals respectively.
  • the above-mentioned n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • Each of the foregoing OTL signals may be assigned a branch number value to distinguish different OTL signals. How to assign a number value to the present invention is not limited. For example, an integer from 1 to n may be used as an n-way OTL.
  • the branch number of the signal may also randomly select n different integers as the branch number value of the n-way OTL signal, and may also use the ID value of the corresponding OTUCn in the n-way OTL signal frame as the branch of the n-way OTL signal. Number value.
  • the transmitting device acquires the branch number of each OTL signal in the n-way OTL signal.
  • the transmitting device acquires each scrambling code of the n uncorrelated scrambling code generation polynomials to generate a polynomial polynomial number.
  • the transmitting device generates a polynomial polynomial for each OTL signal according to the branch number of each OTL signal and the polynomial number of each polynomial.
  • the branch number of the OTL signal may be an ID value of the OTUCn in the OTLCn frame, or may be generated after the transmitting device numbers each OTL signal.
  • the transmitting device needs to generate a polynomial polynomial number according to the branch number of each OTL signal and each scrambling code for each OTL.
  • the signal is assigned a corresponding scrambling code generation polynomial, so that each of the n channels of the OTL signal transmitted by the transmitting device can be scrambled according to different scrambling code generation polynomials, thereby solving the multi-channel OTL signal parallel scrambling code, and then crossing the OTL.
  • Field 0 is 1 in the line caused by signal multiplexing.
  • n uncorrelated scrambling code generation polynomials described in step 303 are obtained when the transmitting device performs initialization before transmitting the OTUCn signal, or the transmitting device is already solidified in the transmitting device before leaving the factory.
  • the sending device acquires n uncorrelated scrambling code generation polynomials according to the number of OTL signals n, and includes two implementation manners.
  • the transmitting device acquires n uncorrelated scrambling code generation polynomials from the pre-configured scrambling code generation polynomial library according to the number of OTL signals n.
  • the transmitting device determines a highest order of the scrambling code generator polynomial; determines all prime numbers that are less than the highest order of the scrambling code generator polynomial; generates n uncorrelated scrambling code generator polynomials according to the number of OTL signals n, wherein each scrambling The order of all items except the highest order term and the constant term in the code generator polynomial is the number in all the prime numbers, and any two polynomials are different.
  • the sending device acquires n uncorrelated scrambling code generation polynomials according to the number of OTL signals n, mainly generating a polynomial library according to the pre-established scrambling code according to the number of OTL signals n or generating a polynomial generating strategy by using a pre-configured scrambling code.
  • n non-correlated ⁇ yum generator polynomials ( ⁇ ), (? 2 ( ⁇ ), ..., G r (x) ).
  • the above-mentioned ⁇ ui code generation polynomial library Storing at least n non-correlated scrambling code generation polynomials; and the scrambling code generation polynomial generation strategy may be obtained by using a scrambling code generation polynomial generation strategy related configuration information sent from the network manager to the transmitting device, or may be pre- Configured.
  • the transmitting device needs to acquire the correspondence between the n-way OTL signal and the n uncorrelated scrambling code generating polynomials, and the corresponding relationship may be the transmitting device.
  • the self-generated one may also be obtained from the network manager, or may be pre-stored in the transmitting device.
  • the corresponding relationship describes the scrambling code generation polynomial used in scrambling each OTL signal.
  • the term other than the constant term is determined according to the branch number r of the OTL signal; wherein the parameter b is the highest order of the polynomial of the scrambling code, and is pre-configured or sent to the transmitting device through the network manager.
  • the parameter b is a natural number.
  • the associated scrambling code generator polynomial is obtained by generating a polynomial library in a pre-established scrambling code as shown in Table 1. Specifically, before using the above scrambling code to generate a polynomial library, first, it is necessary to acquire a branch number of each OTL signal, and then obtain a corresponding scrambling code generation polynomial from the scrambling code generation polynomial library according to the branch number of each OTL signal.
  • the transmission device specifically needs to generate how many scrambling code generator polynomials, depending on the number n of OTL signals.
  • the transmitting device transmits the scrambled OTL signal to the receiving device through the subcarrier.
  • step 304 specifically includes:
  • the OTL signal after each scrambling code of the transmitting device is split into c logical channels, and a total of c*n logical channels are obtained, wherein the above parameter c is a natural number;
  • 304b2 The transmitting device multiplexes the c*n logical channel into the m-way multiplexed signal; 304a3, the transmitting device transmits the m-way multiplexed signal to the receiving device through the sub-carrier.
  • the c*n path logical channel cross-bit multiplexing is used as the m-path multiplexed signal in two ways: mode one, all logical channels multiplexed into one-way multiplexed signal Is a partial logical channel or all logical channels in the c-channel logical channel formed by splitting the OTL signal; mode 2, the logical channel multiplexed into one-way branch multiplexing signal includes at least two logical channels, the two The logical channel is not a logical channel split by the same OTL signal.
  • a logical channel multiplexed into one multiplexed signal includes logical channel 1 and logical channel 2, wherein logical channel 1 is OTL # l Split logical channel, logical channel 2 is a logical channel split by two different OTL signals from the logical channel split by OTL#2.
  • the transmitting device multiplexes the c*n logical channel into the m-way multiplexed signal, and divides the c*n logical channel into m equal parts in any combination, and includes each aliquot.
  • ( c*n ) /m logical channel multiplexes the c*n/m logical channels in each aliquot into one multiplexed signal, and transmits it to the receiving device through one subcarrier.
  • parameter C is a natural number.
  • step 304 specifically includes:
  • the transmitting device multiplexes the n-channel scrambled OTL signal into an m-way branch multiplexing signal.
  • the transmitting device can multiplex the OTL signal after each n/m channel scrambling into one tributary complex.
  • any number of OTL signals can also be multiplexed into one-way branch multiplexed signal, that is, the number of OTL signals in each of the multiplexed signals of the m-way multiplexed signals is different, for example,
  • the number of OTL signals multiplexed into the first multiplexed signal is 3, and the number of OTL signals multiplexed into the multiplexed signal of the second tributary is 4, and all n ways can be As a whole, the road signal is distributed to the m road in turn, and the m-way branch multiplexing signal is generated.
  • a method for signal transmission in an optical transport network provided by an embodiment of the present invention, by distributing an OTUCn signal into an n-way OTL tributary signal, and generating a polynomial for each scrambling code according to n uncorrelated scrambling codes, respectively The corresponding OTL signal is scrambled, and finally the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, thereby causing possible transmission in the line transmission.
  • a long 0 or a long 1 occurs, which in turn causes the receiver to fail to recover the correct signal data stream.
  • the solution provided by the present invention performs scrambling processing on the n-way OTL signal by n uncorrelated scrambling code generation polynomials, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, and data of the scrambled OTL signal.
  • An embodiment of the present invention provides a method for transmitting a signal in an optical transport network, as shown in FIG. 13 , which is implemented by a receiving device. Specifically, the present embodiment mainly processes a received signal by a receiving end carrying a scrambling code plan. The method, wherein the method for transmitting signals in the optical transport network specifically includes the following steps:
  • the receiving device acquires an n-channel OTL optical channel transmission branch signal.
  • the n-way OTL signal is distributed by a signal of an OTUCn optical channel transmission unit, and n is greater than or equal to 2.
  • the OTUCn signal is distributed as an n-way OTL signal.
  • the OTL signal is a signal of a rate of 100 Gbit/s, which is called OTLC 1
  • the n-way OTLC 1 signal is The number is OTLC 1 # 1 , OTLC 1 #2 , OTLC l #n.
  • the OTUCn ID overhead of the first ⁇ 'J in the first line of each OTLC 1 signal carries the number information of the OTLC l signal.
  • the receiving device when the receiving device receives the m-way branch multiplexing signal, it is first necessary to demultiplex the received m-way branch multiplexing signal, recover the c*n-channel logical channel, and *n logical channel is restored to n-way OTL signal, or directly m-branch multiplexed signal is demultiplexed and restored to n-way OTL signal, and then descrambled code is processed for each OTL signal, after descrambling The n-way OTL signal is reorganized into one OTUCn signal.
  • the receiving device generates a polynomial for each scrambling code based on the n uncorrelated scrambling codes, and performs descrambling processing on the n-channel OTL signals.
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • the following steps are also performed:
  • the receiving device obtains the branch number of each OTL signal, and the polynomial number of each scrambling code generation polynomial.
  • the receiving device generates a polynomial polynomial corresponding to each OTL signal according to the branch number of each OTL signal and the polynomial number of each polynomial.
  • the branch number of the OTL signal may be an OTUCn ID in an OTLCn frame, or may be generated by the receiving device after numbering each OTL signal.
  • the receiving device needs to acquire the branch number of each OTL signal and the polynomial number of each scrambling code generation polynomial before, according to each scrambling code generation polynomial, respectively, to perform scrambling processing on the corresponding OTL signal.
  • the same matching strategy is used to allocate a scrambling code generator polynomial to each OTL signal, so that the transmitting end and the receiving end can perform scrambling and descrambling processing for each OTL signal according to the same scrambling code generation polynomial.
  • n uncorrelated scrambling code generation polynomials described in step 402 are obtained when the receiving device performs initialization before receiving the OTL signal, or the receiving device is already solidified before leaving the factory. In the receiving device.
  • the receiving device acquires n uncorrelated scrambling codes according to the number n of OTL signals.
  • the generating polynomial includes two implementation manners.
  • the receiving device acquires n uncorrelated scrambling code generation polynomials from the pre-configured scrambling code generation polynomial library according to the number of OTL signals n.
  • the receiving device determines a highest order of the scrambling code generator polynomial; determines all prime numbers that are less than the highest order of the scrambling code generator polynomial; and generates n uncorrelated scrambling code generator polynomials according to the number n of OTL signals.
  • the order of all items except the highest order item and the constant item in each scrambling code generator polynomial is the number of all the prime numbers, and any two polynomials are different.
  • the receiving device acquires n uncorrelated scrambling code generation polynomials according to the number of OTL signals n, mainly generating a polynomial library according to the pre-established scrambling code according to the number of OTL signals n or generating a polynomial generating strategy by using a pre-configured scrambling code.
  • n non-correlated scrambling code generator polynomials (( ⁇ ), (? 2 ( ⁇ ), ..., G r (x) ).
  • the scrambling code generation polynomial library stores n non-symbols
  • the related scrambling code generation polynomial may be obtained by the scrambling code generation polynomial generation strategy related configuration information sent from the network manager to the receiving device, or may be pre-configured.
  • the receiving device acquires n unrelated scrambling codes to generate multiple items. After the formula, the corresponding relationship between the n-way OTL signal and the n uncorrelated scrambling code generation polynomials is acquired, and the correspondence may be generated by the receiving device itself, or may be acquired from the network manager or the transmitting device. The correspondence describes the scrambling code generation polynomial used in scrambling each OTL signal.
  • the term other than the order monomial and the constant term is determined according to the branch number r of the OTL signal; wherein the parameter b is the highest order of the polynomial of the scrambling code, and is pre-configured or sent to the receiving through the network manager.
  • Device and the parameter b is a natural number.
  • the embodiment of the present invention provides two ways of acquiring n uncorrelated scrambling code generator polynomials, and one is based on step bl in the corresponding embodiment of FIG. 12 to obtain n uncorrelated scrambling code generator polynomials.
  • the first mode one is based on the second method of acquiring n uncorrelated scrambling codes to generate a polynomial according to step b2 in the corresponding embodiment of FIG.
  • the specific process of obtaining the scrambling code generation polynomial is the same as that of the receiving end, and the foregoing two implementation manners are described in the embodiment of the method for transmitting signals in the optical transmission network implemented by the transmitting device corresponding to FIG. 12, where No longer.
  • the receiving device reassembles the n-channel OTL signal after the descrambling code into one OTUCn signal.
  • the n-channel OTL signals after the descrambling code may be separately performed.
  • FEC decoding processing Specifically, the foregoing FEC coding is a general error correction technology, and is generally used for decoding the received data stream at the receiving end, which can correct errors introduced during the transmission process and ensure consistent data transmission and reception.
  • a method for signal transmission in an optical transport network provided by an embodiment of the present invention
  • the OTUCn signal is distributed as n-way OTL signals, and each scrambling code generation polynomial is generated according to n uncorrelated scrambling codes, respectively, and the corresponding OTL signals are scrambled, and finally the scrambled OTL signals are passed through the sub-carriers. Transfer to the receiving device.
  • the transmitting device only transmits the n-channel OTL signal to the receiving device after bit multiplexing, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, thereby causing possible transmission in the line.
  • a long 0 or a long 1 occurs, which in turn causes the receiving end to fail to recover the correct signal data stream.
  • the solution provided by the present invention performs scrambling processing on the n-way OTL signal by n uncorrelated scrambling code generation polynomials, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, and data of the scrambled OTL signal.
  • the flow breaks the situation of continuous 0 or continuous 1 in the original data stream, and can avoid the continuous 0 or continuous 1 situation when the logical channel split by different OTL signals multiplexes one branch multiplexed signal. Therefore, the occurrence of a long 0 or a long 1 in the line is avoided, thereby ensuring that the receiving end can correctly recover the data stream.
  • the following embodiments are mainly directed to a process in which a signal is scrambled by a transmitting end and then transmitted to a receiving end, and a receiving end receives a scrambled coded signal to perform a descrambling process.
  • the provided sending end performs the process of scrambling the signal and transmitting the signal to the receiving end and the receiving end to receive the scrambled coded signal for descrambling, and specifically includes two implementation manners.
  • the OTUCn signal in this embodiment is exemplified herein by the OTUCn signal of the n*100G, and the OTLC1 signal of the OTL signal in the embodiment is at a rate of 100 Gbit/s.
  • the n OTLC 1 signals are sequentially numbered as OTLC 1 # 1 , OTLC 1 #2 , OTLC 1 #n.
  • each OTLC 1 signal is split into four OTLCn.4n logical channels as an example.
  • the transmitting end carries the scrambling code plan to transmit the signal to the receiving end.
  • the body includes the following steps:
  • the transmitting device distributes the received OTUCn signal into an n-way OTLC1 signal, and determines the number n of the OTLC1 signal.
  • the transmitting device distributes the OTUCn signal in byte granularity (that is, the OTUCn frame is sequentially distributed from the first byte to the n-way) and is distributed as n-way OTLCK.
  • the transmitting device performs FEC encoding on each of the n OTLC1 signals.
  • the FEC code used in step 502 is not limited, and the NS coding mode is preferred.
  • the transmitting device acquires n uncorrelated scrambling codes based on the number of OTLC1 signals n to generate a polynomial (G ⁇ x G ⁇ x), ..., G perennial(x)).
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • the transmitting device allocates a corresponding scrambling code generation polynomial for each OTLC1 signal.
  • the transmitting device is based on the tributary number of each OTLC1 signal (eg, the OTLC1 number in the OTUCn ID overhead area of the OTUCn frame), and the polynomial number of each scrambling code generation polynomial for each OTLC 1 signal. Assign the corresponding ⁇ ui code to generate a polynomial. For example, for the OTLC 1 signal numbered OTLC 1 #1, the polynomial number is assigned to the ⁇ code generator polynomial, and the OTLC 1 signal number OTLC 1 #2 is assigned to the scrambling code generator polynomial with the polynomial number 2.
  • the transmitting device generates a polynomial based on the n uncorrelated scrambling codes, and performs scrambling processing on the OTLC1 signals respectively.
  • the n non-correlated scrambling code is generated based on n to generate a polynomial, c G x), ..., G n (x);
  • the OTLC 1 signal respectively uses the corresponding n non-correlated scrambling codes to generate polynomials ⁇ ( ⁇ ), ( ⁇ ), ..., G complicat(x) for frame synchronization scrambling processing;
  • the OTLC1 signal except the frame header byte (columns 1 to 6 of the first row) does not perform scrambling, and other bytes need to perform frame synchronization scrambling processing.
  • the specific frame synchronization scrambling process is as follows.
  • the reset value is all ones, that is, "FFFF" in hexadecimal notation; in the case of the clock of the first OTLC1 signal, the first OTLC1 signal is sequentially "disturbed" from the first row and the seventh column.
  • Pre-code OTLC1" signal interface input where the input order for each byte is high priority, that is, the high bit is prior to the low bit input, the first bit is input to the 7th bit, and the 0th bit is finally input; after frame synchronization After the code, the signal is output from the "scrambling code OTLC1" interface signal, thereby obtaining the first OTLC1 signal after frame synchronization scrambling.
  • the circuit performs scrambling processing.
  • the scrambling process of the second OTLC1 signal and subsequent OTLC1 signals is similar to the scrambling process corresponding to the first OTLC1, and will not be described here.
  • other n-2 OTLC1s are corresponding.
  • the scrambling process is similar to the scrambling process corresponding to the first and second OTLC1, and therefore will not be described here.
  • the transmitting device splits the n-channel scrambled OTLC1 signal into 4*n OTLC1.4n logical channels.
  • the process of splitting the n-channel scrambled OTLC1 signal into 4*n OTLC 1.4n logical channels is as follows.
  • One of the OTLC1 signals in the OTLC1 signal after the n-channel scrambling is split, and the OTLC1 signal is split into four OTLC1.4n logical channel examples.
  • each OTL frame is divided into 1020 16-byte blocks by a granularity of 16 bytes, where A 16-byte block contains the header indication FALC1 (the 6th byte indicated at the frame header is the LLM byte overhead, ranging from 0 to 239, from the first frame, from 0 to the 240th frame.
  • FALC1 the 6th byte indicated at the frame header is the LLM byte overhead, ranging from 0 to 239, from the first frame, from 0 to the 240th frame.
  • each OTL frame is divided into 956 16-byte blocks with a granularity of 16 bytes, wherein the first 16-byte block contains a frame header indicating FALC 1 , which is a 16-byte block.
  • the query distributes 956 16-byte blocks in each frame to 4 logical channels.
  • the first frame is distributed from the first logical channel
  • the second frame is distributed from the second logical channel
  • the third frame is distributed from the third logical channel
  • the fourth frame is from the fourth frame.
  • the logical channel of the road begins to be distributed. This ensures that each logical channel contains a frame header indication in one cycle (four OTL frames are one cycle), which is convenient for the receiving end to identify each logical channel by searching the frame header indication.
  • the transmitting device multiplexes the 4*n OTLC 1.4n logical channel into an m-way multiplexed signal, and transmits the signal to the receiving device through the m-channel subcarrier.
  • a 4-way OTLC 1.4 tributary signal can be taken as an example, and the transmitting device splits each of the four OTLC 1.4 tributary signals into four OTLC 1.16 logical channels.
  • the first logical channel of the four OTLC 1.4 tributary signals is multiplexed into one physical channel
  • the second logical channel of the four OTLC 1.4 tributary signals is multiplexed into one physical channel and four OTLC 1.4 tributary signals.
  • the third logical channel is multiplexed into one physical channel
  • the fourth logical channel of the four OTLC 1.4 tributary signals is multiplexed into one physical channel.
  • the above physical channel is a branch multiplexed signal.
  • polling bit interleave multiplexing is used. It should be noted that the above multiplexing mode is only one possible implementation manner in the present invention, as long as multiplexing methods belonging to different 100G logical channels can be multiplexed to the extent to be protected by the present invention.
  • a method for transmitting a signal in an optical transport network provided by an embodiment of the present invention, the transmitting device, by distributing the OTUCn signal into an n-way OTLC 1 tributary signal, and generating each of the polynomials according to n uncorrelated ⁇ eu codes
  • the ⁇ ⁇ code generates a polynomial, respectively scrambles the corresponding OTLC 1 signal, and finally transmits the scrambled OTLC 1 signal to the receiving device through the subcarrier.
  • the transmitting device only transmits the n-channel OTLC 1 signal to the receiving device after bit multiplexing, and does not perform scrambling processing on the OTUCn signal or the split OTLC 1 signal, thereby causing line transmission.
  • a long 0 or a long 1 may occur, which may result in the receiver not being able to recover the correct signal data stream.
  • Ben The solution provided by the invention performs scrambling processing on the n-channel OTLC1 signal by using the pre-acquired n uncorrelated scrambling code generation polynomials, that is, re-encoding the original data stream of the OTLC1 signal according to the scrambling code generation polynomial, and scrambling the OTLC1 signal.
  • the data stream breaks the continuous 0 or continuous 1 occurrence in the original data stream, and can avoid the continuous 0 or continuous occurrence when the logical channels split by different OTLC1 signals are multiplexed into one multiplexed signal. In the case of 1, thus avoiding the occurrence of long 0 or long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream.
  • the process according to steps 501 to 507 is performed by the transmitting end to scramble the signal and then transmit the signal to the receiving end.
  • the receiving end receives the scrambled code processed signal for processing, including the following steps:
  • the receiving device acquires the m-way branch multiplexing signal, and demultiplexes the m-way branch multiplexing signal to recover the 4*n-channel OTLC1.4n logical channel.
  • the receiving device distributes the m-way multiplexed signal to the 4*n OTLC1.4n logical channel according to the bit unit, thereby recovering the 4*n OTLC1.4n tweeted channel.
  • the receiving device restores the 4*n OTLC1.4n logical channel to the n OTLC1 signal.
  • the receiving device after recovering the 4*n OTLC1.4n logical channel, the receiving device first performs framing processing on the 4*n OTLC1.4n logical channel, and searches for the OTLC1 signal frame header pattern carried in each logical channel. (1st row, 2nd to 5th columns of the OTLC1 frame), obtain the frame header indication of each logical channel; secondly, align the 4n OTLC1.4n logical channel according to the above-mentioned frame header indication of each logical channel, and according to the OTUCn ID (The value range is 0 ⁇ (!-1), indicating the 1st to !!
  • the process of restoring four OTLC 1.4n logical channels of any one of the n groups to one OTLC1 signal is: the receiving device acquires the LLM (0 ⁇ 239) carried in the four OTLC1.4n logical channels of the group.
  • the number of the OTLC 1.4n logical channel so that the four OTLC1.4n logical channels of the group are rearranged according to the number, and the logical channel sequence before transmission is restored, and the rearranged four OTLC1.4n logical channels are The 16-byte block is restored to a 1-channel 100G OTLC1 signal for granular reassembly.
  • the OTUCn signal is distributed as n OTLC1 signals, and the number of the n OTLC1 signals is OTLC1 #1, OTLCl#2, OTLC1 #n.
  • the OTUCn ID overhead in the first column of the first row of each OTLC1 signal carries the number information of the OTLC1 signal.
  • the receiving apparatus acquires n uncorrelated scrambling code generation polynomials based on the number of OTLC1 signals n (
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors.
  • the n scrambling code generator polynomials without common factors in the present invention means that any two scrambling code generator polynomials cannot be mutually divisible.
  • the receiving device allocates a corresponding ⁇ code generating polynomial for each OTLC1 signal.
  • the receiving device generates a polynomial number of the polynomial according to the branch number of each OTLC1 signal (for example, the number of the OTLC1 located in the OTUCn ID overhead area of the OTUCn frame), according to the scrambling code of the transmitting device.
  • the generator polynomial allocation strategy assigns a corresponding scrambling code generator polynomial to each OTLC1 signal.
  • the transmitting device sets the OTLC1 signal with the tributary number OTLC1 #1 to assign the polynomial number of the polynomial number to 1, and the OTLC1 signal for the tributary number OTLC1 #2 to assign the scrambling code generator polynomial with the polynomial number 2;
  • the receiving apparatus acquires a scrambling code polynomial of the polynomial number 1 for the OTLC1 signal whose branch number is OTLC1 #1, and performs descrambling processing on the OTLC1 signal whose branch number is OTLC1 #2, and acquires the scrambling code of the polynomial number 2 for the OTLC1 signal whose branch number is OTLC1 #2.
  • the generator polynomial is descrambled.
  • the receiving apparatus generates a polynomial for each scrambling code based on the n uncorrelated scrambling code generation coefficients, and performs descrambling processing on the corresponding OTLC1 signal respectively.
  • the ⁇ first uncorrelated scrambling code is generated based on ⁇ to generate a polynomial, ..., G n (x);
  • the OTLC1 signal uses the corresponding n non-correlated scrambling codes to generate polynomials G ⁇ xX G ⁇ x), «, G practice(x) performs frame synchronization descrambling code processing; wherein, each of the above OTLC 1 signals is divided by the frame header byte (the first line of the first line ⁇ ) 6 columns) Except for descrambling code, other bytes need to be descrambled.
  • the specific descrambling process is similar to the scrambling process, so it will not be described here.
  • the receiving device performs FEC encoding on each of the n OTLC 1 signals after the descrambling code.
  • the FEC code used in step 606 is not limited, and the NS coding mode is preferred.
  • the receiving device reassembles the n-channel OTLC 1 signal into one OTUCn signal. It should be noted that before recombining the n-channel OTLC 1 signal, it is necessary to ensure that the n-channel OTLC 1 signal frame header is aligned, and then the n-channel OTLC 1 signal is recombined into one OTUCn signal in a byte multiplexing manner.
  • the embodiment of the present invention provides a method for signal transmission in an optical transport network.
  • the receiving device obtains an n-channel OTLC l Cn optical channel transmission tributary signal, and generates each of the polynomials according to n unrelated ⁇ ⁇ codes.
  • the Yu code generates a polynomial, performs descrambling processing on the corresponding OTLC 1 signal, and recombines the descrambled ⁇ OTLC 1 signal into one OTUCn signal.
  • the transmitting device only transmits the n OTLC 1 signal to the receiving device after bit multiplexing, and does not perform scrambling and descrambling processing on the OTUCn signal or the split OTLC 1 signal, thereby causing In the case of line transmission, a length of 0 or a length of 1 may occur, and the receiving end cannot recover the correct signal data stream.
  • the solution provided by the present invention performs descrambling processing on the n-channel OTLC 1 signal by using the n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTLC 1 signal according to the scrambling code generation polynomial, and scrambling code
  • the data flow of the latter OTLC 1 signal breaks the situation of continuous 0 or continuous 1 in the original data stream, and can also avoid the occurrence of multiplexing of one channel multiplexed signal by logical channels split by different OTLC 1 signals.
  • the case of continuous 0 or continuous 1 avoids the occurrence of long 0 or long 1 in the line, thus ensuring that the receiving end can correctly recover the data stream.
  • An embodiment of the present invention provides a sending device, which can be used to implement Figure 12 and Figure 13.
  • FIG. 12 to FIG. 18 For the working mechanism, interaction with other network elements, related technical terms, concepts, and the like, reference may be made to the embodiments shown in FIG. 12 to FIG. 18, and details are not described herein again.
  • the transmitting device 7 includes: a communication unit 71 and a processor 72, and the towel:
  • the communication unit 71 is configured to communicate with an external device
  • the processor 72 is used to:
  • the OTUCn optical channel transmission unit signal is received, and the OTUCn signal is distributed as an n-channel OTL optical channel transmission tributary signal, and the number of the above-mentioned OTL signals n is an integer greater than or equal to 2.
  • the polynomial is generated based on n uncorrelated scrambling codes, and the n-way OTL signals are scrambled separately.
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without a common factor.
  • the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the processor 72 is further configured to acquire n uncorrelated scrambling code generation polynomials according to the number n of OTL signals.
  • the processor 72 acquires n uncorrelated scrambling codes according to the number of OTL signals.
  • the generator polynomial is specifically configured to: obtain n uncorrelated scrambling codes from the preconfigured scrambling code generation polynomial library according to the number of OTL signals n. a polynomial; wherein the scrambling code generation polynomial library stores at least n uncorrelated scrambling code generator polynomials.
  • the processor 72 obtains n uncorrelated scrambling code generation polynomials according to the number of OTL signals n for: determining a highest order of the scrambling code generator polynomial; determining that all of the highest order of the scrambling code generation polynomial is smaller than Prime number; Generates n uncorrelated scrambling code generator polynomials according to the number of OTL signals n.
  • the order of all items except the highest order term and the constant term in each scrambling code generation polynomial is the number of all the prime numbers, and any two polynomials are different.
  • the OTL signal corresponding to the branch number r in the above-mentioned n-way OTL signal corresponds to
  • the above parameter b is the highest order of the polynomial pre-configured or sent to the transmitting device by the network manager, and b is a natural number.
  • the processor 72 transmits the scrambled OTL signal to the receiving device by using the subcarrier, and is specifically configured to: split each scrambled OTL signal into c logical channels, and obtain a c*n logical channel.
  • the c is a natural number
  • the c*n way logical channel is multiplexed into an m-way multiplexed signal
  • the m-way multiplexed signal is transmitted to the receiving device through the sub-carrier.
  • each of the m-branch multiplexed signals is multiplexed by at least two logical channels; wherein the two logical channels are not OTL after the same path scrambling code The logical channel from which the signal is split.
  • the processor 72 transmits the scrambled OTL signal to the receiving device by using the subcarrier, and is specifically configured to: multiplex the n-channel scrambled OTL signal into an m-way multiplexed signal; The multiplexed signal is transmitted to the receiving device through the subcarrier.
  • the processor 72 is further configured to store a correspondence between the n OTL signals and the n uncorrelated scrambling code generation polynomials; or generate an n OTL signal and the n uncorrelated scrambling code generation polynomials Corresponding relationship; or obtaining a correspondence between the above-mentioned n-way OTL signal and n uncorrelated scrambling code generation polynomials from the network manager.
  • the above correspondence describes a scrambling code generation polynomial used by each OTL signal when scrambling each OTL signal.
  • the processor 72 generates a polynomial based on the n uncorrelated scrambling codes, and respectively performs scrambling processing on the n OTL signals, and is specifically configured to: select, according to the correspondence, select a corresponding scrambling code generation polynomial for each OTL signal. Scrambling code processing.
  • the transmitting device provided by the embodiment of the present invention distributes the OTUCn signal into an n-way OTL tributary signal, and generates a polynomial for each scrambling code according to the n uncorrelated scrambling codes, respectively, and respectively scrambles the corresponding OTL signal. Code processing, and finally the scrambled OTL signal is transmitted to the receiving device through the subcarrier.
  • the transmitting device only performs bit multiplexing on the n-way OTL signals. It is sent to the receiving device, and the OTUCn signal or the split OTL signal is not scrambled, which may cause a long 0 or a long 1 in the line transmission, which may cause the receiving end to fail to recover the correct signal data. flow.
  • the solution provided by the present invention performs scrambling processing on the n-way OTL signal by using the n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, and scrambling the OTL.
  • the data stream of the signal breaks the continuous 0 or continuous 1 occurrence in the original data stream, and can avoid the continuous 0 or continuous occurrence when the logical channel split by different OTL signals multiplexes one branch multiplexed signal. In the case of 1, thereby avoiding the occurrence of a long 0 or a long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream.
  • Embodiments of the present invention provide a receiving device that can be used to implement a receiving device in the embodiments shown in Figures 12, 13, 14, and 18.
  • a receiving device that can be used to implement a receiving device in the embodiments shown in Figures 12, 13, 14, and 18.
  • FIG. 12 For the working mechanism, interaction with other network elements, related technical terms, concepts, and the like, reference may be made to the embodiments shown in FIG. 12 to FIG. 18, and details are not described herein again.
  • the receiving device 8 includes: a communication unit 81 and a processor 82, and the towel:
  • a communication unit 81 configured to communicate with an external device
  • the processor 82 is used to:
  • the n-way OTL signal is distributed by a signal of an OTUCn optical channel transmission unit, and n is greater than or equal to 2.
  • the polynomial is generated based on the n uncorrelated scrambling codes, and the n-way OTL signals are descrambled separately.
  • n uncorrelated scrambling code generator polynomials are n scrambling code generator polynomials without common factors; the n scrambling code generator polynomials without common factors in the present invention refer to any two scrambling code generation polynomials between Can not be divisible from each other.
  • the n-channel OTL signal after the descrambling code is recombined into one OTUCn optical channel transmission unit signal.
  • the processor 82 is further configured to acquire n non-phases according to the number of OTL signals n. Off scrambling code generation polynomial.
  • the processor 82 obtains n uncorrelated scrambling codes according to the number of OTL signals to generate a polynomial for: obtaining n unrelated from the preconfigured scrambling code generation polynomial library according to the number of the OTL signals n.
  • the processor 82 obtains n uncorrelated scrambling code generation polynomials according to the number of OTL signals n for: determining a highest order of the scrambling code generator polynomial; determining a lower order that is smaller than the scrambling code generation polynomial All prime numbers; according to the number of OTL signals n, generate n uncorrelated scrambling code generator polynomials.
  • the order of all items except the highest order term and the constant term in each scrambling code generation polynomial is the number of all the prime numbers, and any two polynomials are different.
  • the parameter X is the highest-order monomial
  • the scrambling code generator polynomial The term other than the constant term is determined according to the branch number r corresponding to the OTL signal; wherein b is the highest order of the polynomial pre-configured or sent to the receiving device by the network manager, b is a natural number, and r is a value in an integer from 1 to n.
  • the processor 82 obtains the n-channel OTL optical channel transmission tributary signal, specifically: demultiplexing the received m-path multiplexed signal, recovering the c*n-channel logical channel, and c* The n-channel logic channel is restored to the n-channel OT signal; or the received m-branch multiplexed signal is demultiplexed and restored to the n-way OTL signal.
  • the processor 82 is further configured to obtain a branch number of each OTL signal, and a polynomial number of each scrambling code generation polynomial; and generate a polynomial polynomial according to the branch number of each OTL signal and each scrambling code Number, find the scrambling code generator polynomial corresponding to each OTL signal.
  • the processor 82 is further configured to store a correspondence between the n OTL signals and the n uncorrelated scrambling code generation polynomials; or generate a correspondence relationship between the n OTL signals and the n uncorrelated scrambling code generation polynomials; Or obtaining the n way from the network manager The correspondence between the OTL signal and the n uncorrelated scrambling code generator polynomials.
  • the above correspondence describes a scrambling code generation polynomial used by each OTL signal when scrambling each OTL signal.
  • the receiving device provided by the receiving device obtains an n-way OTLCn optical channel transmission tributary signal, and generates a polynomial for each scrambling code according to n uncorrelated scrambling codes, respectively, and respectively corresponding to the OTL signal Des scrambling code processing is performed, and the n-channel OTL signal after the descrambling code is recombined into one OTUCn signal.
  • the transmitting device only performs scrambling and descrambling processing on the N or the split OTL signal, which may cause a long 0 or a long 1 in the line transmission, thereby causing the receiving end to be unable to recover.
  • Proper signal flow The solution provided by the present invention performs descrambling processing on the n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal according to the scrambling code generation polynomial, after scrambling
  • the OTL signal OTL signal is bit-multiplexed and then sent to the receiving device.
  • the data stream of the OTUCn signal number does not break the continuous 0 or continuous 1 in the original data stream, and can be avoided by different OTL signals.
  • the divided logical channel multiplexes the case of continuous 0 or continuous 1 when one branch multiplexes the signal, thereby avoiding the occurrence of long 0 or long 1 in the line, thereby ensuring that the receiving end can correctly recover the data stream. .
  • the transmitting device and the receiving device provided by the embodiments of the present invention may also constitute a signal transmission system in the optical transport network to implement the signal transmission method in the optical transport network provided by the embodiment shown in FIGS. 12 to 18.
  • the signal transmission system 9 in the optical transmission network includes: a transmitting device 91 and a receiving device 92.
  • the transmitting device 91 may be a transmitting device as shown in FIGS. 5 to 8; the receiving device 92 may be a receiving device as shown in FIGS. 9 to 11.
  • the signal transmission system in the optical transmission network provided by the embodiment of the present invention generates a polynomial generation strategy by setting the same scrambling code at the transmitting end and the receiving end, so that the transmitting end and the receiving end can generate a polynomial generating strategy for each channel according to the scrambling code.
  • the OTL signal generates a corresponding scrambling code generation polynomial such that the OTL signal can be scrambled or descrambled according to a corresponding scrambling code generation polynomial.
  • the transmitting end only performs bit multiplexing on the n-way OTL signal. After being used, it is sent to the receiving end, and the OTUCn signal or the split OTL signal is not scrambled, so that when the multi-channel OTL signal is bit-multiplexed, the length of the original data stream of the OTL signal is long. 1 has been extended, which in turn causes the receiver to fail to recover the correct signal data stream.
  • the present invention is different.
  • the present invention performs scrambling processing on an n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal by using a scrambling code generation polynomial to cause interference.
  • the data stream of the OTL signal after the code not only breaks the situation of such continuous 0 or continuous 1 in the original data stream, but also because the n scrambling code generation polynomials are non-correlated, even if they are split by different OTL signals.
  • the logical channel is multiplexed into one physical channel, the data stream transmitted on the physical channel does not appear to be 0 or longer, which ensures that the receiving end can correctly recover the OTUCn signal.
  • the transmitting device and the receiving device provided by the embodiments of the present invention may also constitute a signal transmission system in the optical transport network to implement the signal transmission method in the optical transport network provided by the embodiment shown in FIGS. 12 to 18.
  • the signal transmission system S 1 0 in the optical transmission network includes: a transmitting device S 1 01 and a receiving device S 1 02.
  • the sending device S 1 01 may be a sending device as shown in FIG. 19; the receiving device S 1 02 may be a receiving device as shown in FIG.
  • the signal transmission system in the optical transmission network provided by the embodiment of the present invention generates a polynomial generation strategy by setting the same scrambling code at the transmitting end and the receiving end, so that the transmitting end and the receiving end can generate a polynomial generating strategy for each channel according to the scrambling code.
  • the OTL signal generates a corresponding scrambling code generation polynomial such that the OTL signal can be scrambled or descrambled according to a corresponding scrambling code generation polynomial.
  • the transmitting end only transmits the n-way OTL signal to the receiving end, and does not perform scrambling processing on the OTUCn signal or the split OTL signal, so that the multi-channel OTL signal is performed.
  • the length 0 and length 1 of the original data stream of the OTL signal are expanded, and the receiver cannot recover the correct signal data stream.
  • the present invention is different.
  • the present invention performs scrambling processing on an n-way OTL signal by using n uncorrelated scrambling code generation polynomials acquired in advance, that is, re-encoding the original data stream of the OTL signal by using a scrambling code generation polynomial to cause interference.
  • the data stream of the OTL signal after the code not only breaks this continuous 0 in the original data stream or The case of continuous 1 occurs, and since the n scrambling code generation polynomials are uncorrelated, even when the logical channel split by different OTL signals is multiplexed into one physical channel, the physical channel is transmitted.
  • the data stream also does not appear to be long 0 or long, which in turn ensures that the receiving end can correctly recover the OTUCn signal.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiment of the present embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program code. .

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Abstract

本发明公开了一种光传送网中信号传输的方法、装置及系统,涉及光通信技术领域,能够保证接收端正确的恢复OTUCn信号。具体的实现方法包括:接收OTUCn光通道传输单元信号,并将所述OTUCn信号分发为n路OTL光通道传输支路信号,所述n为大于等于2的整数;基于n个非相关的扰码生成多项式,对所述n路OTL信号分别进行扰码处理;其中,所述n个非相关的扰码生成多项式为n个无公共因子的扰码生成多项式;将扰码后的OTL信号通过子载波传送至接收装置。本发明应用于光传送网中信号的传输。

Description

光传送网中信号传输的方法、 装置及系统 技术领域
本发明涉及光通信技术领域, 尤其涉及一种光传送网中信号传 输的方法、 装置及系统。
背景技术
光传送网 (Optical TransportNetwonk , OTN) 是以波分复用技 术为基础、 在光层组织网络的传送网, 可以提供巨大的传送容量、 完全透明的端到端波长 /子波长连接以及电信级的保护, 是传送网络 的核 心技术 。 OTN 具备丰 富 的 操作 管 理和 维护(Openation Administnation and Maintenance , OAM)能力、 强大的串联连接监视 (Tandem Connection Monitoning , TCM) 能力 和带夕卜前向 纠 错 (Fonwand EnnonConnection , FEC) 能力, 能够实现大容量业务的灵 活调度和管理。 但随着互联网业务流量海量的增长, 传统的 OTN技 术已不能满足未来带宽的持续增长, 从而需要 OTN 向更高的传送 速率发展, 例如 400Gb/s(400 吉比特 /每秒) 或者 l TGb/s( 1000 吉比 特 / 每秒)。 而 OTN 向更高的传送速率发展需要灵活的光频谱分配 技术、高阶调制技术及多载波技术等来实现。 因此, 当前 SG 15/ITU-T 正在讨论制 定一种灵活 线路速率 的 OTU ( Optical channel TnanspontUnit , 光通道传送单元), 称之为 OTUCn , 其中, C 为罗 马数字 100 , n为可变的值, OTUCn 的比特速率为 n倍基准速率, 其 中 , 基准速率为 100Gbit/s 级别 的速率 , 例如 , 可 以 是 105.258〜1 12.80384Gbit/s 中 的 任 意 值 , 优 选 的 , 可 以 是 1 12.80384Gbit/s、 1 12.30471 Gbit/s、 1 12.55372Gbit/s、 105.725952Gbit/s 这四种中的任一种。 OTUCn 可以根据实际光物理资源进行最优配 置, 从而提供多等级灵活速率线路接口, 例如, 根据实际需求提供
200G、 300G n* 100G等系列多等级灵活速率线路接口。 OTUCn 的引入使得 OTN线路接口灵活化, 接口速率基于 n的变化可变, 很 好地满足了对未来多业务灵活、 高效率的承载, 同时又能够满足运 营商对光频谱带宽资源的精细化运营需求。
在现有技术中, 发送端将 OTUCn信号发送至接收端之前, 首 先需要将 OTUCn信号分发为 n路 OTL ( ( Optical Channel Tnanspont Lane, 光通道传输支路) 信号, 并对 n路 OTL信号分别进行 FEC编 码处理, 然后将 n路 OTL信号中的每路 OTL信号拆分为 4路逻辑 通道, 并将拆分后的 4*n路逻辑通道复用到 m个物理通道传送至接 收端, 以便接收端从 m个物理通道恢复出 n路 OTL信号, 并对 n 路 OTL信号分别进行 FEC解码处理, 最后将 n路 OTL信号重组为 1路 OTUCn信号。
在上述的 OTUCn信号的传输过程中, 由于 OTUCn信号或者 OTL信号的原始数据流中可能会出现特殊图案 (如, 连续的 0或连 续的 1 ) , 会使得线路中出现长 0或长 1 的情况。 针对 OTUCn信号 的传输, 现有技术暂时还没有考虑也没有技术方案来抑制这种长 0 或者长 1 情况的出现, 而由于这种长 0或者长 1 情况的存在, 导致 接收端无法从接收到的数据流中提取到时钟, 进而无法恢复出正确 的 OTUCn信号。 发明内容
本发明的实施例提供一种光传送网中信号传输的方法、 装置及 系统, 能够保证接收端正确的恢复 OTUCn信号。
为达到上述目 的, 本发明的实施例釆用如下技术方案: 第一方面, 提供一种发送装置, 包括:
分发单元, 用于接收 OTUCn光通道传输单元信号, 并将所述 OTUCn信号分发为 n路 OTL光通道传输支路信号, 所述 n为大于 等于 2的整数;
扰码单元, 用于基于 n个非相关的扰码生成多项式, 对所述 n 路 OTL信号分别进行扰码处理; 其中, 所述 n个非相关的扰码生成 多项式为 n个无公共因子的扰码生成多项式; 传送单元, 用于将所述扰码单元扰码后的 OTL 信号通过子载 波传送至接收装置。
在第一方面的第一种可能的实现方式中, 所述发送装置还包 括:
获取单元, 用于根据 OTL信号数 n获取 n个非相关的扰码生 成多项式。
根据第一方面的第一种可能的实现方式, 在第一方面的第二种 可能的实现方式中:
所述获取单元具体用于: 根据所述 OTL信号数 n从预配置的 扰码生成多项式库中获取 n个非相关的扰码生成多项式; 其中, 所 述扰码生成多项式库中存储至少 n个扰码生成多项式。
根据第一方面的第一种可能的实现方式, 在第一方面的第三种 可能的实现方式中:
所述获取单元具体用于: 确定扰码生成多项式的最高阶数; 确 定小于所述扰码生成多项式的最高阶数的所有质数; 根据所述 OTL 信号数 n , 生成 n 个非相关的扰码生成多项式, 其中, 每个扰码生 成多项式中除最高阶数的项和常数项以外的所有项的阶数均是所述 所有质数中的数, 且任意两个多项式均不相同。
结合第一方面或第一方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第一方面的第四种可能的实现方式 中,所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + x 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述发送装置的 多项式的最高阶数, 所述 b为 自然数。
结合第一方面或第一方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第一方面的第五种可能的实现方式 中, 所述传送单元包括:
拆分模块, 用于将所述扰码单元获得的每路扰码后的 OTL 信 号拆分为 c路逻辑通道, 共得 c*n路逻辑通道; 其中, 所述 c为 自 然数;
第一复用模块, 用于将所述拆分模块拆分出的所述 c*n路逻辑 通道复用为 m路支路复用信号;
第一传送模块,用于将所述复用模块复用的 m路支路复用信号 通过子载波传送至所述接收装置。
根据第一方面的第五种可能的实现方式, 在第一方面的第六种 可能的实现方式中, 所述第一复用模块包含至少一个复用子模块, 所述复用子模块用于将至少两路逻辑通道复用成一路支路复用信 号, 其中, 所述两路逻辑通道不是由同一路扰码后的 OTL信号拆分 而成的逗辑通道。
结合第一方面或第一方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第一方面的第七种可能的实现方式 中, 所述传送单元包括:
第二复用模块, 用于将 n路扰码后的 OTL信号复用为 m路支 路复用信号;
第二传送模块,用于将所述复用模块复用的 m路支路复用信号 通过子载波传送至所述接收装置。
结合第一方面或第一方面的第一种至第七种可能的实现方式 中的任一种可能的实现方式, 在第一方面的第八种可能的实现方式 中, 所述发送装置还包括:
对应关系管理单元, 用于存储所述 n路 OTL信号与所述 n个 非相关的扰码生成多项式的对应关系; 或者用于生成所述 n路 OTL 信号与所述 n个非相关的扰码生成多项式的对应关系; 或者用于从 网络管理器获得所述 n路 OTL信号与所述 n个非相关的扰码生成多 项式的对应关系;
其中, 所述对应关系描述了在对每路 OTL 信号进行扰码时所 述每路 OTL信号所釆用的扰码生成多项式。
根据第一方面的第八种可能的实现方式, 在第一方面的第九种 可能的实现方式中, 所述扰码单元具体用于根据所述对应关系为每 一路 OTL信号选择相应的扰码生成多项式进行扰码处理。
结合第一方面的第八种可能的实现方式或第一方面的第九种 可能的实现方式, 在第一方面的第十种可能的实现方式中, 所述对 应关系管理单元, 还用于将所述对应关系发送给网络管理器或者所 述接收装置。
第二方面, 提供一种接收装置, 包括:
第一获取单元, 用于获取 n路 OTL 光通道传输支路信号, 其 中, 所述 n路 OTL信号是由一路 OTUCn光通道传输单元信号分发 而成的, n大于等于 2 ;
解扰码单元, 用于基于 n个非相关的扰码生成多项式, 对所 述 n路 OTL信号分别进行解扰码处理; 其中, 所述 n个非相关的扰 码生成多项式为 n个无公共因子的扰码生成多项式;
重组单元, 用于将所述解扰码单元解扰码后的 n路 OTL信号 重组为一路所述 OTUCn信号。
在第二方面的第一种可能的实现方式中, 所述接收装置还包 括:
第二获取单元, 用于根据 OTL信号数 n获取 n个非相关的扰 码生成多项式。
根据第二方面的第一种可能的实现方式, 在第二方面的第二种 可能的实现方式中:
所述第二获取单元具体用于: 根据所述 OTL信号数 n从预配 置的扰码生成多项式库中获取 n个非相关的扰码生成多项式; 其中 所述扰码生成多项式库中存储至少 n个非相关的扰码生成多项式。
根据第二方面的第一种可能的实现方式, 在第二方面的第三种 可能的实现方式中:
所述第二获取单元具体用于: 确定扰码生成多项式的最高阶 数; 确定小于所述扰码生成多项式的最高阶数的所有质数; 根据所 述 OTL信号数 n , 生成 n个非相关的扰码生成多项式, 其中, 每个 扰码生成多项式中除最高阶数的项和常数项以外的所有项的阶数均 是所述所有质数中的数, 且任意两个多项式均不相同。
结合第二方面或第二方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第二方面的第四种可能的实现方式 中,所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + x 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述接收装置的 多项式的最高阶数, 所述 b为 自然数。
结合第二方面或第二方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第二方面的第五种可能的实现方式 中:
所述第一获取单元具体用于:将接收到的 m路支路复用信号进 行解复用, 恢复出 c*n路逻辑通道, 并将所述 c*n路逻辑通道恢复 为 n路 OTL信号;或者,将接收到的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
结合第二方面或第二方面的第一种至第五种可能的实现方式 中的任一种可能的实现方式, 在第二方面的第六种可能的实现方式 中, 所述接收装置还包括:
第三获取单元, 用于获取每路 OTL 信号的支路编号, 及每个 扰码生成多项式的多项式编号;
查找单元, 用于根据所述每路 OTL 信号的支路编号与所述每 个扰码生成多项式的多项式编号, 查找每路 OTL信号对应的扰码生 成多项式。
结合第二方面或第二方面的第一种至第六种可能的实现方式 中的任一种可能的实现方式, 在第二方面的第七种可能的实现方式 中, 所述接收装置还包括:
对应关系管理单元, 用于存储所述 n路 OTL信号与所述 n个 非相关的扰码生成多项式的对应关系, 或者用于从网络管理器或者 发送所述 OTUCn信号的发送装置获取所述 n路 OTL信号与所述 n 个非相关的扰码生成多项式的对应关系, 所述对应关系描述了在对 每路 OTL信号进行扰码处理时所釆用的扰码生成多项式;
相应地, 所述解扰码单元具体用于根据所述对应关系为每一路 OTL信号选择相应的扰码生成多项式进行解扰码处理。
第三方面,提供一种光传送网中信号传输的方法,其特征在于, 包括:
接收 OTUCn光通道传输单元信号,并将所述 OTUCn信号分发 为 n路 OTL光通道传输支路信号, 所述 n为大于等于 2的整数; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个 无公共因子的扰码生成多项式;
将扰码后的 OTL信号通过子载波传送至接收装置。
在第三方面的第一种可能的实现方式中, 所述接收 OTUCn光 通道传输单元信号, 并将所述 OTUCn信号分发为 n路 OTL光通道 传输支路信号之后, 还包括:
根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
根据第三方面的第一种可能的实现方式, 在第三方面的第二种 可能的实现方式中, 所述根据 OTL信号数 n获取 n个非相关的扰码 生成多项式具体包括:
根据所述 OTL信号数 n从预配置的扰码生成多项式库中获取 n 个非相关的扰码生成多项式; 其中, 所述扰码生成多项式库中存储 至少 n个非相关的 ·ί尤码生成多项式。
根据第三方面的第一种可能的实现方式, 在第三方面的第三种 可能的实现方式中, 所述根据 OTL信号数 η获取 η个非相关的扰码 生成多项式具体包括:
确定扰码生成多项式的最高阶数;
确定小于所述扰码生成多项式的最高阶数的所有质数; 根据所述 OTL信号数 η , 生成 η个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶数的项和常数项以外的所有 项的阶数均是所述所有质数中的数, 且任意两个多项式均不相同。
结合第三方面或第一方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第三方面的第四种可能的实现方式 中,所述 η路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + x 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述发送装置的 多项式的最高阶数, 所述 b为 自然数。
结合第三方面或第三方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第三方面的第五种可能的实现方式 中,所述将扰码后的 OTL信号通过子载波传送至接收装置具体包括: 将每路扰码后的 OTL信号拆分为 c路逻辑通道, 共得 c*n路 逻辑通道; 其中, 所述 c为 自然数;
将所述 c*n路逻辑通道复用为 m路支路复用信号;
将所述 m路支路复用信号通过子载波传送至所述接收装置。 根据第三方面的第五种可能的实现方式, 在第三方面的第六种 可能的实现方式中, 所述 m路支路复用信号中的每路支路复用信号 是由至少两路逻辑通道复用得到的; 其中, 所述两路逻辑通道不是 由同一路扰码后的 OTL信号拆分而成的逻辑通道。
结合第三方面或第三方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第三方面的第七种可能的实现方式 中,所述将扰码后的 OTL信号通过子载波传送至接收装置具体包括: 将 n路扰码后的 OTL信号复用为 m路支路复用信号;
将所述 m路支路复用信号通过子载波传送至所述接收装置。 结合第三方面或第三方面的第一种至第七种可能的实现方式 中的任一种可能的实现方式, 在第三方面的第八种可能的实现方式 中, 所述方法还包括:
存储所述 n路 OTL信号与所述 n个非相关的扰码生成多项式 的对应关系; 或者生成所述 n路 OTL信号与所述 n个非相关的扰码 生成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号 与所述 n个非相关的扰码生成多项式的对应关系;
其中, 所述对应关系描述了在对每路 OTL 信号进行扰码时所 述每路 OTL信号所釆用的扰码生成多项式。
根据第三方面的第八种可能的实现方式, 在第三方面的第九种 可能的实现方式中, 所述基于 n个非相关的扰码生成多项式中每个 扰码生成多项式,对所述 n路 OTL信号分别进行扰码处理具体包括: 根据所述对应关系为每一路 OTL 信号选择相应的扰码生成多 项式进行扰码处理。
第四方面, 提供一种光传送网中信号传输的方法, 包括: 获取 n路 OTL光通道传输支路信号, 其中, 所述 n路 OTL信 号是由一路 OTUCn光通道传输单元信号分发而成的, n大于等于 2 ; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行解扰码处理; 其中, 所述 n 个非相关的扰码生成多项式为 n 个无公共因子的扰码生成多项式;
将解扰码后的 n路 OTL信号重组为一路 OTUCn光通道传输单 元信号。
在第四方面的第一种可能的实现方式中, 所述获取 OTL 光通 道传输支路信号之后, 还包括:
根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
根据第四方面的第一种可能的实现方式, 在第四方面的第三种 可能的实现方式中, 所述根据 OTL信号数 n获取 n个非相关的扰码 生成多项式具体包括:
根据所述 OTL信号数 n从预配置的扰码生成多项式库中获取 n 个非相关的扰码生成多项式; 其中所述扰码生成多项式库中存储至 少 n个非相关的 ·ί尤码生成多项式。
根据第四方面的第一种可能的实现方式, 在第四方面的第三种 可能的实现方式中, 所述根据 OTL信号数 η获取 η个非相关的扰码 生成多项式具体包括:
确定扰码生成多项式的最高阶数;
确定小于所述扰码生成多项式的最高阶数的所有质数; 根据所述 OTL信号数 n , 生成 n个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶数的项和常数项以外的 所有项的阶数均是所述所有质数中的数, 且任意两个多项式均不相 同。
结合第四方面或第四方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第四方面的第四种可能的实现方式 中,所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + , 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述接收装置的 多项式的最高阶数, 所述 b为 自然数。
结合第四方面或第四方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第四方面的第五种可能的实现方式 中, 所述获取 n路 OTL光通道传输支路信号具体包括:
将接收到的 m路支路复用信号进行解复用,恢复出 c*n路逻辑 通道, 并将所述 c*n路逻辑通道恢复为 n路 OTL信号; 或者, 将接 收到的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
结合第四方面或第四方面的第一种至第五种可能的实现方式 中的任一种可能的实现方式, 在第四方面的第六种可能的实现方式 中, 所述所述获取 OTL光通道传输支路信号之后, 还包括:
获取每路 OTL 信号的支路编号, 及每个扰码生成多项式的多 项式编号;
根据所述每路 OTL 信号的支路编号与所述每个扰码生成多项 式的多项式编号, 查找每路 OTL信号对应的扰码生成多项式。
结合第四方面或第四方面的第一种至第六种可能的实现方式 中的任一种可能的实现方式, 在第四方面的第七种可能的实现方式 中, 所述方法还包括:
存储所述 n路 OTL信号与所述 n个非相关的扰码生成多项式 的对应关系; 或者生成所述 n路 OTL信号与所述 n个非相关的扰码 生成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号 与所述 n个非相关的扰码生成多项式的对应关系;
其中, 所述对应关系描述了在对每路 OTL 信号进行扰码时所 述每路 OTL信号所釆用的扰码生成多项式。
第五方面, 提供一种发送设备, 包括:
通信单元, 用于与外部设备通信;
处理器用于:
接收 OTUCn光通道传输单元信号,并将所述 OTUCn信号分发 为 n路 OTL光通道传输支路信号, 所述 n为大于等于 2的整数; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个 无公共因子的扰码生成多项式;
将扰码后的 OTL信号通过子载波传送至接收装置。
在第五方面的第一种可能的实现方式中:
所述处理器, 还用于根据 OTL信号数 n获取 n个非相关的扰 码生成多项式。
根据第五方面的第一种可能的实现方式, 在第五方面的第二种 可能的实现方式中:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多 项式具体用于: 根据所述 OTL信号数 n从预配置的扰码生成多项式 库中获取 n 个非相关的扰码生成多项式; 其中, 所述扰码生成多项 式库中存储至少 n个非相关的扰码生成多项式。
根据第五方面的第一种可能的实现方式, 在第五方面的第三种 可能的实现方式中:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多 项式具体用于: 确定扰码生成多项式的最高阶数; 确定小于所述扰 码生成多项式的最高阶数的所有质数; 根据所述 OTL信号数 n , 生 成 n个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除 最高阶数的项和常数项以外的所有项的阶数均是所述所有质数中的 数, 且任意两个多项式均不相同。
结合第五方面或第一方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第五方面的第四种可能的实现方式 中,所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + , 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述发送装置的 多项式的最高阶数, 所述 b为 自然数。
结合第五方面或第五方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第五方面的第五种可能的实现方式 中:
所述处理器将扰码后的 OTL 信号通过子载波传送至接收装置 具体用于:将每路扰码后的 OTL信号拆分为 c路逻辑通道,共得 c*n 路逻辑通道; 其中, 所述 c为 自然数; 将所述 c*n路逻辑通道复用 为 m路支路复用信号; 将所述 m路支路复用信号通过子载波传送至 所述接收装置。
根据第五方面的第五种可能的实现方式, 在第五方面的第六种 可能的实现方式中, 所述 m路支路复用信号中的每路支路复用信号 是由至少两路逻辑通道复用得到的; 其中, 所述两路逻辑通道不是 由同一路扰码后的 OTL信号拆分而成的逻辑通道。
结合第五方面或第五方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第五方面的第七种可能的实现方式 中:
所述处理器将扰码后的 OTL 信号通过子载波传送至接收装置 具体用于: 将 n路扰码后的 OTL信号复用为 m路支路复用信号; 将 所述 m路支路复用信号通过子载波传送至所述接收装置。 结合第五方面或第五方面的第一种至第七种可能的实现方式 中的任一种可能的实现方式, 在第五方面的第八种可能的实现方式 中:
所述处理器, 还用于存储所述 n路 OTL信号与所述 n个非相 关的扰码生成多项式的对应关系; 或者生成所述 n路 OTL信号与所 述 n个非相关的扰码生成多项式的对应关系; 或者从网络管理器获 得所述 n路 OTL信号与所述 n个非相关的扰码生成多项式的对应关 系;
其中, 所述对应关系描述了在对每路 OTL 信号进行扰码时所 述每路 OTL信号所釆用的扰码生成多项式。
根据第五方面的第八种可能的实现方式, 在第五方面的第九种 可能的实现方式中, 所述处理器基于 n 个非相关的扰码生成多项式 中每个扰码生成多项式, 对所述 n路 OTL信号分别进行扰码处理具 体用于: 根据所述对应关系为每一路 OTL信号选择相应的扰码生成 多项式进行扰码处理。
第六方面, 提供一种接收设备, 包括:
通信单元, 用于与外部设备通信;
处理器用于:
获取 n路 OTL光通道传输支路信号, 其中, 所述 n路 OTL信 号是由一路 OTUCn光通道传输单元信号分发而成的, n大于等于 2 ; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行解扰码处理; 其中, 所述 n 个非相关的扰码生成多项式为 n 个无公共因子的扰码生成多项式;
将解扰码后的 n路 OTL信号重组为一路 OTUCn光通道传输单 元信号。
在第六方面的第一种可能的实现方式中:
所述处理器, 还用于根据 OTL信号数 n获取 n个非相关的扰 码生成多项式。
根据第六方面的第一种可能的实现方式, 在第六方面的第三种 可能的实现方式中:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多 项式具体用于: 根据所述 OTL信号数 n从预配置的扰码生成多项式 库中获取 n 个非相关的扰码生成多项式; 其中所述扰码生成多项式 库中存储至少 n个非相关的扰码生成多项式。
根据第六方面的第一种可能的实现方式, 在第六方面的第三种 可能的实现方式中:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多 项式具体用于: 确定扰码生成多项式的最高阶数; 确定小于所述扰 码生成多项式的最高阶数的所有质数; 根据所述 OTL信号数 n , 生 成 n个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除 最高阶数的项和常数项以外的所有项的阶数均是所述所有质数中的 数, 且任意两个多项式均不相同。
结合第六方面或第六方面的第一种至第三种可能的实现方式 中的任一种可能的实现方式, 在第六方面的第四种可能的实现方式 中,所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (x) = l + ; + , 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b 是预配置或通过网络管理器下发至所述接收装置的 多项式的最高阶数, 所述 b为 自然数。
结合第六方面或第六方面的第一种至第四种可能的实现方式 中的任一种可能的实现方式, 在第六方面的第五种可能的实现方式 中:
所述处理器获取 n路 OTL 光通道传输支路信号具体用于: 将 接收到的 m路支路复用信号进行解复用, 恢复出 c*n路逻辑通道, 并将所述 c*n路逻辑通道恢复为 n路 OTL信号; 或者, 将接收到的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
结合第六方面或第六方面的第一种至第五种可能的实现方式 中的任一种可能的实现方式, 在第六方面的第六种可能的实现方式 中:
所述处理器, 还用于获取每路 OTL 信号的支路编号, 及每个 扰码生成多项式的多项式编号; 根据所述每路 OTLOTL信号的支路 编号与所述每个扰码生成多项式的多项式编号, 查找每路 OTL信号 对应的扰码生成多项式。
结合第六方面或第六方面的第一种至第六种可能的实现方式 中的任一种可能的实现方式, 在第六方面的第七种可能的实现方式 中, 所述处理器, 还用于存储所述 n路 OTL信号与所述 n个非相关 的扰码生成多项式的对应关系; 或者生成所述 n路 OTL信号与所述 n 个非相关的扰码生成多项式的对应关系; 或者从网络管理器获得 所述 n路 OTL信号与所述 n个非相关的扰码生成多项式的对应关系; 其中, 所述对应关系描述了在对每路 OTL 信号进行扰码时所 述每路 OTL信号所釆用的扰码生成多项式。
第七方面, 提供一种光传送网中信号传输系统, 其特征在于, 该系统包括: 发送装置和接收装置, 其中, 所述发送装置上述的任 一发送装置, 所述接收装置为上述的任一接收装置。
第八方面, 提供一种光传送网中信号传输系统, 该系统包括: 发送设备和接收设备, 其中, 所述发送设备为上述的任一发送设备, 所述接收设备为上述的任一接收设备。
本发明的实施例提供的光传送网中信号传输的方法、 装置及系 统, 通过在发送端和接收端设置相同的扰码生成多项式生成策略, 使得发送端和接收端可以根据该扰码生成多项式生成策略为每路 OTL信号生成对应的扰码生成多项式, 使得 OTL信号可以根据对应 的扰码生成多项式进行扰码或解扰码处理。
在现有技术中, 发送端仅仅只是将 n路 OTL信号进行比特复 用后便发送至接收端, 并没有对 OTUCn信号或者拆分后的 OTL信 号进行扰码处理, 这样在多路 OTL 信号进行比特复用时, 导致了 OTL信号的原始数据流中的长 0长 1 进行了扩展, 进而导致接收端 无法恢复出正确的信号数据流。 基于上述描述, 一个潜在的方案是 在 OTUCn信号拆分成 OTL信号之前,直接对 OTUCn信号进行扰码, 这样虽然在开始时便打破了该 OTUCn 信号的原始数据流中可能出 现的长 0长 1情况, 但是, 由于 OTUCn速率的可变性, 给设计和实 现带来很大难度, 在实现上是无法完成的。 另一种潜在方案是对拆 分出的 n路 OTL信号都釆用相同的扰码生成多项式进行扰码处理, 但是, 当多路 OTL信号并行釆用相同的扰码方式进行处理时, 由不 同 OTL信号拆分而成的逻辑通道复用到一路物理通道时, 使得在该 物理通道上传输的数据流中还是可能出现长 0或长 1 的情况。
而本发明则不同, 本发明通过预先获取的 n个非相关的扰码生 成多项式对 n路 OTL信号进行扰码处理, 即通过扰码生成多项式对 OTL信号的原始数据流进行再编码, 使得扰码后的 OTL信号的数据 流不仅打破了原始数据流中这种连续 0或者连续 1 出现的情况, 而 又由于这 n 个扰码生成多项式之间是非相关的, 即使在将由不同 OTL信号拆分而成的逻辑通道复用到一路物理通道时, 该物理通道 上传输的数据流也不会出现长 0或长 1 的情况, 进而保证了接收端 能够正确恢复 OTUCn信号。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下 面将对实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于 本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以 根据这些附图获得其他的附图。
图 1为本发明的实施例提供的一种 OTUCn帧的帧结构示意图; 图 2为本发明的实施例提供的另一种 OTUCn帧的帧结构示意 图;
图 3为本发明的实施例提供的一种 OTL帧的帧结构示意图; 图 4为本发明的实施例提供的另一种 OTL帧的帧结构示意图; 图 5为本发明的实施例提供的一种发送装置的装置示意图; 图 6为本发明的实施例提供的另一种发送装置的装置示意图; 图 7为本发明的实施例提供的又一种发送装置的装置示意图; 图 8为本发明的实施例提供的再一种发送装置的装置示意图; 图 9为本发明的实施例提供的一种接收装置的装置示意图; 图 10为本发明的实施例提供的另一种接收装置的装置示意图; 图 1 1为本发明的实施例提供的又一种接收装置的装置示意图; 图 12 为本发明的实施例提供的一种光传送网中信号传输的方 法的流程示意图;
图 13 为本发明的实施例提供的另一种光传送网中信号传输的 方法的流程示意图;
图 14 为本发明的实施例提供的又一种光传送网中信号传输的 方法的流程示意图;
图 15 为本发明的实施例提供的一种 OTL 信号扰码电路示意 图;
图 16 为本发明的实施例提供另一种 OTL 信号扰码电路示意 图;
图 17为本发明的实施例提供的 1 6路 OTLC 1 . 16逻辑通道复用 为 4路物理通道示意;
图 18 为本发明的实施例提供的再一种光传送网中信号传输的 方法的流程示意图;
图 19 为本发明的另一实施例提供的一种发送设备的装置示意 图;
图 20 为本发明的另一实施例提供的一种接收设备的装置示意 图;
图 21 为本发明的实施例提供的一种光传送网中信号传输系统 的系统示意图;
图 22 为本发明的实施例提供的另一种光传送网中信号传输系 统的系统示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术 方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明 一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本 领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他 实施例, 都属于本发明保护的范围。
本发明的实施例应用于 OTN , OTN能够实现大容量业务的灵 活调度和管理, 但随着互联网业务流量的增长, 传统的 OTN技术已 不能满足未来带宽的持续增长。 因此, 当前 SG15/ITU-T正在讨论制 定一种灵活线路速率 OTUCn, OTUCn信号可以分发为 n路 OTL信 号, 在一个实施例中, 每路 OTL信号的速率为 100Gbit/s级别的速 率), 该速率为 100Gbit/s级别的 OTL信号被称之为 OTLC1 信号, 该 n路 OTLC1信号被依次编号为 OTLC1 #1, OTLC1 #2, OTLC1 #n。 而上述拆分出的 n路 OTLC 1 信号可以通过 m路多子载波或光 信号传送, 其中 n>=m, n为 m的整数倍;对应的,存在 n路 ODLC1 信号 ( Optical Channel Data Lane-Cl , 光通道数据支路 -CI ), 依次被 编号为 ODLC1 #1, ODLC1 #2, ODLC1 #n; 存在 n路 OPLC1 信号 ( Optical Channel Payload Lane-Cl , 光通道净荷支路 -CI ), 依 次被编号为 OPLC1 #1, OPLC1 #2, OPLC1 #n。 前文中提到的
OTUCn, OTLCl、 0DLC1、 OPLC1 中的 "C" 是罗马数字 100.
示例性的,本发明的实施例中的 OTUCn信号的 OTUCn帧结构 具体可以为以下两种帧结构:
第一种 OTUCn帧的帧结构如图 1 所示,该 OTUCn帧的帧结构 为 4行 4080*n列, 其中, 第 1 行的 l〜7n列为帧头指示开销, 第 1 行的 ( 7n+l ) 〜14n歹 'J为 OTUCn的开 4 区, 第 2〜4行的 l〜14n歹 'J为 ODUCn的开销区, 第 1〜4行的 ( 14n+l ) 〜16n列为 OPUCn的开销 区, 第 1〜4行的 ( 16n+l ) 〜3824n列为 OPUCn净荷区, 第 1〜4行的 ( 3824n+l ) 〜4080n歹 'J为 OTUCn的 FEC校验区。 对应的, 基于图 1 所示的 OTUCn信号的 OTUCn帧的帧结构, 其对应拆分后的 OTL信号的 OTL帧的帧结构如图 2所示, 该 OTL 帧结构为 4行 4080列, 其中, 第 1行的 1〜7列为帧头指示开销, 第 1行的 8〜14列为 OTL的开销区,第 2〜4行的 1〜14列为 ODL的开销 区, 第 1〜4行^ I 15〜16歹 'J为 OPU ^ H , 第 1〜4行^ I 17〜3824歹 'J 为 OPU净荷区, 第 1〜4行的 3825〜4080列为 OTU的 FEC校验区。
第二种 OTUCn帧的帧结构如图 3所示,该 OTUCn帧的帧结构 无 FEC校验区, 该 OTUCn帧的帧结构为 4行 3824*n歹 'J , 其中, 第 1 4亍的 l〜7n歹 'J为†贞头指示开销' , 第 1 #的( 7n+ l ) 〜14n歹 'J为 OTUCn 的开销区, 第 2〜4行的 l〜14n歹 'J为 ODUCn的开销区, 第 1〜4行的 ( 14n+ l ) 〜16n歹 'J为 OPUCn的开销区, 第 4行的 ( 16n+ l ) 〜3824n 列为 OPUCn净荷区。
对应的, 基于图 3所示的 OTUCn信号的 OTUCn帧的帧结构, 其对应拆分后的 OTL信号的 OTL帧的帧结构如图 4所示, 该 OTL 帧结构为无 FEC校验区, 该 OTL帧的帧结构为 4行 3824歹l , 其中, 第 1行的 1〜7列为帧头指示开销, 第 1 行的 8〜14列为 OTL的开销 区, 第 2〜4行的 1〜14列为 ODU的开销区, 第 1〜4行的 15〜16列为 OPU的开销区, 第 1〜4行的 17〜3824列为 OPU净荷区。
基于上述描述, 本发明提供了一种光传送网中信号传输的方 法、 装置及系统。
如图 5所示, 本发明的实施例提供一种发送装置, 该发送装置 1具体包括: 分发单元 11、 扰码单元 12和传送单元 13 , 其中:
分发单元 11 用于接收 OTUCn 光通道传输单元信号, 并将 OTUCn信号分发为 n路 OTL信号, 其中, n为大于等于 2的整数。
扰码单元 12用于基于 n个非相关的扰码生成多项式, 分别对 相应的 OTL信号进行扰码处理。
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。 传送单元 13 用于将 12扰码单元扰码后的 OTL信号通过子载 波传送至接收装置。
在一实施例中,传送单元 13在将扰码后的 OTL信号通过 m个 子载波传送至接收装置前, 需要先将 n 路 OTL 信号中的每路 OTL 信号拆分为 c路逻辑通道 (参数 c为 自然数), 将 c*n路逻辑通道交 叉比特复用为 m路支路复用信号, 最后通过 m路子载波传送至接收 装置。
具体的,发送装置将 c*n路逻辑通道交叉比特复用为 m路支路 复用信号可以有两种方式: 方式一、 被复用为一路支路复用信号的 所有逻辑通道均是由一路 OTL信号拆分而成的 c路逻辑通道中的部 分逻辑通道或者全部逻辑通道; 方式二、 被复用为一路支路复用信 号的逻辑通道中至少包含两路逻辑通道, 该两路逻辑通道不是由同 一路 OTL信号拆分而成的逻辑通道, 例如, 被复用为一路支路复用 信号的逻辑通道中包含逻辑通道 1和逻辑通道 2 , 其中, 逻辑通道 1 是由 OTL# l 拆分而成的逻辑通道, 逻辑通道 2是由 OTL#2拆分而 成的逻辑通道由两路不同的 OTL信号拆分而成的逻辑通道。
可选地, 发送装置在将 OTUCn信号分发为 n路 OTL信号后, 还可以通过该发送装置中的 FEC编码单元对 n路 OTL信号分别进行 FEC编码处理。
具体的, 上述的 FEC 编码为一种通用纠错技术, 在发送端通 常用于在发送数据流之前, 对数据流进行预编码处理, 可以纠正传 送过程中引入的错误,确保收发数据一致。本发明优选釆用 NS( Need Solomon ) (255 , 239 , t=8 , m=8)编码方式, 该编码方式的 1个符号 大小为 8bit ,即 m=8 ;—个码字大小为 255个符号,即 255 * 8=2040bit ; 其中有效净荷区大小为 239个符号, 也即 239* 8 = 1912bit; 其 t=8代 表, 一个码字中最大可纠正 8个符号错误。
本发明的实施例提供的发送装置, 通过将 OTUCn信号分发为 n路 OTL支路信号, 并根据 n个非相关的扰码生成多项式, 分别对 相应的 OTL信号进行扰码处理, 最后将扰码后的 OTL信号通过子 载波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码处理, 从而导致线路传输中可能会出现长 0 或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明提 供的方案通过预先获取的 n个非相关的扰码生成多项式对 n路 OTL 信号进行扰码处理, 即根据扰码生成多项式对 OTL信号的原始数据 流进行再编码, 扰码后的 OTL信号的数据流打破了原始数据流中这 种连续 0或者连续 1 出现的情况, 还能避免由不同 OTL信号拆分而 成的逻辑通道复用一路支路复用信号时出现的连续 0或者连续 1 的 情况, 从而避免了线路中出现长 0或长 1 出现的情况, 进而保证了 接收端能够正确恢复数据流。
可选的, 如图 6所示, 该发送装置 1还包括: 获取单元 14用 于根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
示例性的, 获取单元 14根据 OTL信号数 n获取 n个非相关的 •ί尤码生成多项式, 可以有以下两种实现方式:
第一种实现方式: 获取单元 14基于预先建立的扰码生成多项 式库来获取 η个非相关的扰码生成多项式。
可选的, 该获取单元 14具体用于: 根据 OTL信号数 η从预配 置的扰码生成多项式库中获取 η个非相关的扰码生成多项式。 其中, 该扰码生成多项式库中存储至少 η个非相关的扰码生成多项式。
第二种实现方式: 获取单元 14基于通过预先配置的扰码生成 多项式生成策略来获取 η个非相关的扰码生成多项式。
可选的, 该获取单元 14 具体用于: 确定扰码生成多项式的最 高阶数;确定小于扰码生成多项式的最高阶数的所有质数;根据 OTL 信号数 η , 生成 η 个非相关的扰码生成多项式, 其中, 每个扰码生 成多项式中除最高阶数的项和常数项以外的所有项的阶数均是所述 所有质数中的数, 且任意两个多项式均不相同。
示例性的, 所述 η路 OTL信号中支路编号为 r的 OTL信号对 应的 ·ί尤码生成多项式为 (χ) = ι+ τ+ , 该 X是 ·ί尤码生成多项式中除最 高阶单项式和常数项以外的项, 是根据 OTL信号的支路编号 r来确 定; 其中, 上述的参数 b 为该扰码生成多项式的最高阶数, 是预配 置或通过网络管理器下发至发送装置的, 且该参数 b 为 自然数。 此 外, 每路 OTL 信号均可以被赋予一个支路编号值, 以区分不同的 OTL信号, 如何赋予编号值本发明不进行限定, 例如, 可以将 1 到 n的整数分别将作为 n路 OTL信号的支路编号值, 也可以随机选择 n个不同的整数作为 n路 OTL信号的支路编号值,还可以将 n路 OTL 信号帧中对应的 OTUCn 的 ID值作为 n路 OTL信号的支路编号值。
可选的, 如图 6所示, 传送单元 13 包括: 拆分模块 13 1 a、 复 用模块 132a和传送模块 133a , 其中:
拆分模块 143 a 用于将扰码单元 12 获得的每路扰码后的 OTL 信号拆分为 c路逻辑通道, 共得 c*n路逻辑通道; 其中, 该 c为 自 然数。
第一复用模块 132a用于将拆分模块 13 1 a拆分出的 c*n路逻辑 通道复用为 m路支路复用信号。
示例性的, 上述的复用模块 132a将 c*n路逻辑通道复用为 m 路支路复用信号, 是指将 c*n路逻辑通道以任意组合方式划分为 m 等份,在每 1等份中包含(c*n)/m路逻辑通道,将每 1等份中的 c*n/m 路逻辑通道复用为 1 路支路复用信号。 其中, 上述的参数 c为 自然 数。第一复用模块 132a将 c*n路逻辑通道交复用为 m路支路复用信 号时可以釆用如下两种方式中的任意一种: 方式一、 被复用为一路 支路复用信号的所有逻辑通道均是由一路 OTL信号拆分而成的 c路 逻辑通道中的部分逻辑通道或者全部逻辑通道; 方式二、 被复用为 一路支路复用信号的逻辑通道中至少包含两路逻辑通道, 该两路逻 辑通道不是由同一路 OTL信号拆分而成的逻辑通道, 例如, 被复用 为一路支路复用信号的逻辑通道中包含逻辑通道 1 和逻辑通道 2 , 其中, 逻辑通道 1是由 OTL# l拆分而成的逻辑通道, 逻辑通道 2是 由 OTL#2 拆分而成的逻辑通道由两路不同的 OTL信号拆分而成的 逻辑通道。 在一实施例中, 第一复用模块 132a至少包含一个复用子 模块釆用方式二将逻辑通道复用为一路支路复用信号。
传送模块 133a用于将复用模块 132a复用的 m路支路复用信号 通过 m路子载波传送至接收装置。
可选的, 如图 7所示, 传送单元 13 包括: 第二复用模块 13 1b 和第二传送模块 132b , 其中:
第二复用模块 13 1b , 用于将 n路扰码后的 OTL信号复用为 m 路支路复用信号。
第二传送模块 132b , 用于将第二复用模块 13 1 b复用的 m路支 路复用信号通过子载波传送至接收装置。
可选的, 如图 8所示, 该发送装置 1 , 还包括: 第一编号单元 15、 第二编号单元 16和分配单元 17 , 其中:
第一编号单元 15 , 用于获取 n路 OTL信号中每路 OTL信号的 支路编号, 其中, 每路 OTL信号对应一个支路编号。
第二编号单元 16 ,用于对 n个非相关的扰码生成多项式进行编 号, 其中, 每个扰码生成多项式对应一个多项式编号。
分配单元 17 , 用于根据每路 OTL信号的支路编号与每个扰码 生成多项式的多项式编号, 为每路 OTL信号分配相应的 ·ί尤码生成多 项式。
可选的, 发送装置 1还可以进一步包括:
对应关系管理单元 18 , 用于存储 η路 OTL信号与 η个非相关 的扰码生成多项式的对应关系; 或者用于生成 η路 OTL信号与所述 η 个非相关的扰码生成多项式的对应关系; 或者用于从网络管理器 获得所述 η路 OTL信号与上述的 η个非相关的扰码生成多项式的对 应关系。
其中, 上述的对应关系描述了在对每路 OTL 信号进行扰码时 所釆用的扰码生成多项式。
进一步可选的, 发送装置 1 中的扰码单元 13 可以根据来自对 应关系管理单元的所述对应关系, 为每一路 OTL信号选择相应的扰 码生成多项式进行扰码。
可选的, 对应关系管理单元还可以用于将对应关系发送给网络 管理器或者接收装置。 网络管理器获取到所述对应关系后可以发送 给接收装置, 以便接收装置根据此对应关系为每路 0 T L信号选择相 应的扰码生成多项式进行解扰码。
本发明的实施例提供的发送装置, 通过将 OTUCn信号分发为 n路 OTL信号, 并根据 n个非相关的扰码生成多项式中每个扰码生 成多项式, 分别对相应的 OTL信号进行扰码处理, 最后将扰码后的 OTL信号通过子载波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码处理, 从而导致了线路传输中可能会出现长 0 或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明 提供的方案通过预先获取的 n 个非相关的扰码生成多项式对 n 路 OTL信号进行扰码处理, 即根据扰码生成多项式对 OTL信号的原始 数据流进行再编码, 扰码后的 OTL信号的数据流打破了原始数据流 中这种连续 0或者连续 1 出现的情况, 还能避免由不同 OTL信号拆 分而成的逻辑通道复用一路支路复用信号时出现的连续 0 或者连续 1 的情况, 从而避免了线路中出现长 0 或长 1 出现的情况, 进而保 证了接收端能够正确恢复数据流。
本发明实施例对发送装置的单元划分, 是一种示例性的说明, 在实 际中可以有多种单元的划分方法来构成本发明实施例的发送装置。
相应于本发明实施例提供的发送装置, 本发明的实施例还提供 一种接收装置, 如图 9所示, 该接收装置 2包括: 第一获取单元 21、 解扰码单元 22及重组单元 23 , 其中:
第一获取单元 21用于获取 n路 OTL光通道传输支路信号, 其 中, 所述 n路 OTL信号是由一路 OTUCn光通道传输单元信号分发 而成的, n大于等于 2。
解扰码单元 22 用于基于 n个非相关的扰码生成多项式, 对 n 路 OTL信号分别进行解扰码处理。
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
重组单元 23 用于将解扰码单元 22解扰码后的 n路 OTL信号 重组为 1路 OTUCn光通道传输单元信号。
可选的, 接收装置中的解扰码单元 22在对 n个非相关的扰码 生成多项式中每个扰码生成多项式对应的 OTL信号进行解扰码处理 后, 还可以通过该接收装置中的解码单元对解扰码后的 n路 OTL信 号分别进行 FEC解码处理。
具体的, 上述的 FEC 编码为一种通用纠错技术, 在接收端通 常用于对接收到的数据流进行解码处理, 可以纠正传送过程中引入 的错误, 确保收发数据一致。 本发明优选釆用釆用 NS ( Need Solomon ) (255 , 239 , t=8 , m=8)编码方式, 该编码方式的 1个符号 大小为 8bit ,即 m=8 ;—个码字大小为 255个符号,即 255 *8=2040bit; 其中有效净荷区大小为 239个符号, 也即 239*8 = 1912bit; 其 t=8代 表, 一个码字中最大可纠正 8个符号错误。
本发明的实施例提供的接收装置, 通过获取 n路 OTLCn光通 道传输支路信号, 并根据 n个非相关的扰码生成多项式中每个扰码 生成多项式, 分别对相应的 OTL信号进行解扰码处理, 并将解扰码 后的 n路 OTL信号重组为 1路 OTUCn信号。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码和解扰码处理, 从而导致了线路传输中可能会出现长 0 或者长 1 的情况, 进而接收端无法恢复出正确的信号数据流。 本 发明提供的方案通过预先获取的 n 个非相关的扰码生成多项式对 n 路 OTL信号进行解扰码处理, 即根据扰码生成多项式对 OTL信号 的原始数据流进行再编码, 扰码后的 OTL信号的数据流打破了原始 数据流中这种连续 0或者连续 1 出现的情况, 还能避免由不同 OTL 信号拆分而成的逻辑通道复用一路支路复用信号时出现的连续 0 或 者连续 1 的情况, 从而避免了线路中出现长 0或长 1 出现的情况, 进而保证了接收端能够正确恢复数据流。
可选的, 如图 10所示, 该接收装置 2还包括: 第二获取单元 24 , 用于根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
示例性的, 第二获取单元 24基于 OTL信号数 n获取 n个非相 关的扰码生成多项式, 可以有以下两种实现方式:
第一种实现方式: 第二获取单元 24基于预先建立的扰码生成 多项式库来获取 n个非相关的扰码生成多项式。
可选的, 该第二获取单元 24具体用于: 根据 OTL信号数 n从 预配置的扰码生成多项式库中获取 n个非相关的扰码生成多项式。 其中, 该扰码生成多项式库中存储至少 n个非相关的扰码生成多项 式。
第二种实现方式: 第二获取单元 24基于通过预先配置的扰码 生成多项式生成策略来获取 n个非相关的扰码生成多项式。
可选的, 该第二获取单元 24 具体用于: 确定扰码生成多项式 的最高阶数; 确定小于扰码生成多项式的最高阶数的所有质数; 根 据 OTL信号数 n , 生成 n个非相关的扰码生成多项式, 其中, 每个 扰码生成多项式中除最高阶数的项和常数项以外的所有项的阶数均 是所述所有质数中的数, 且任意两个多项式均不相同。
示例性的, n路 OTL信号中支路编号为 r的 OTL信号对应的 •ί尤码生成多项式为 (x) = l + r + x6 , 该 X是 ·ί尤码生成多项式中除最高阶 单项式和常数项以外的项, 是根据 OTL信号的支路编号 r来确定; 其中, 上述的参数 b 为该扰码生成多项式的最高阶数, 是预配置或 通过网络管理器下发至发送装置的,且该参数 b为 自然数。每路 OTL 信号的支路编号值可以从每路 OTL信号的开销中获取。
示例性的, 第一获取单元 21具体用于: 将接收到的 m路支路 复用信号进行解复用, 恢复出 c*n路逻辑通道, 并将 c*n路逻辑通 道恢复为 n路 OTL信号; 或者, 将接收到的 m路支路复用信号进行 解复用, 恢复为 n路 OTL信号。 其中, 上述的参数 c与发送端中的 参数 c相一致, 且该参数 c为 自然数。
可选的, 如图 1 1所示, 该接收装置 2 , 还包括: 第三获取单元 25和查找单元 26 , 其中:
第三获取单元 25用于获取每路 OTL信号的支路编号, 及每个 扰码生成多项式的多项式编号。
查找单元 26用于根据每路 OTL信号的支路编号与每个扰码生 成多项式的多项式编号,查找每路 OTL信号对应的扰码生成多项式。
可选的, 接收装置 2还可以进一步包括:
对应关系管理单元 27 , 用于存储 n路 OTL信号与 n个非相关 的扰码生成多项式的对应关系; 或者从网络管理器或者发送所述 OTUCn信号的发送装置获取所述 n路 OTL信号与所述 n个非相关 的扰码生成多项式的对应关系, 其中, 上述的对应关系描述了在对 每路 OTL信号进行扰码处理时所釆用的扰码生成多项式。
相应地, 解扰码单元 23 具体用于根据上述的对应关系为每一 路 OTL信号选择相应的扰码生成多项式进行解扰码处理。
本发明的实施例提供的接收装置, 通过获取 n路 OTLCn光通 道传输支路信号, 并根据 n个非相关的扰码生成多项式中每个扰码 生成多项式, 分别对相应的 OTL信号进行解扰码处理, 并将解扰码 后的 n路 OTL信号重组为 1路 OTUCn信号。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码和解扰码处理, 从而导致了线路传输中可能会出现长 0或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明提供的方案通过预先获取的 n个非相关的扰码生成多项式对 n路 OTL信号进行解扰码处理, 即根据扰码生成多项式对 OTL信号 的原始数据流进行再编码, 扰码后的 OTL信号的数据流打破了原始 数据流中这种连续 0或者连续 1 出现的情况, 还能避免由不同 OTL 信号拆分而成的逻辑通道复用一路支路复用信号时出现的连续 0 或 者连续 1 的情况, 从而避免了线路中出现长 0或长 1 出现的情况, 进而保证了接收端能够正确恢复数据流。
本发明实施例对接收装置的单元划分, 是一种示例性的说明, 在实 际中可以有多种单元的划分方法来构成本发明实施例的接收装置。
本发明的实施例提供一种光传送网中信号传输的方法,如图 12 所示, 由发送装置实现, 具体的, 本实施例主要针对发送端将信号 传输至接收端的过程, 该光传送网中信号传输的方法具体包括如下 步骤:
301、 发送装置接收 OTUCn光通道传输单元信号。
302、 发送装置将 OTUCn信号分发为 n路 OTLCn光通道传输 支路信号。
其中, n为大于等于 2的整数。 示例性的, OTUCn信号分发为 n路 OTL信号,在一实施例中, 该 OTL信号是速率为 100Gbit/s级别 的信号, 将其称之为 OTLC1, 相应地, 该 n路 OTLC1 信号被编号 为 OTLCl #l, OTLC1 #2, OTLC1 #n。 位于每一路 OTLC1信号 的第 1行的第 1 歹l 1〜!!歹 'J的 OTUCn ID开销,携带该路 OTLC1 的编 号信息。
需要说明的是, 发送装置在将 OTUCn信号分发为 n路 OTL信 号后, 还可以对 n 路 OTL 信号分别进行前向错误纠正 ( Fonwand Ennon Connection, FEC ) 编码处理。 具体的, 上述的 FEC编码为一 种通用纠错技术, 在发送端通常用于在发送数据流之前, 对数据流 进行预编码处理, 可以纠正传送过程中引入的错误, 确保收发数据 一致。 本发明优选釆用釆用 NS ( Need Solomon, 雷蒙)(255, 239, t=8, m=8)编码方式, 该编码方式的 1个符号大小为 8bit, 即 m=8; 一个码字大小为 255个符号, 即 255*8=2040bit; 其中有效净荷区大 小为 239个符号, 也即 239*8=1912bit; 其 t=8代表, 一个码字中最 大可纠正 8个符号错误。
303、 发送装置基于 n 个非相关的扰码生成多项式中每个扰码 生成多项式, 分别对相应的 OTL信号进行扰码处理。 其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
其中, 上述的每路 OTL 信号均可以被赋予一个支路编号值, 以区分不同的 OTL信号,如何赋予编号值本发明不进行限定,例如, 可以将 1到 n的整数分别将作为 n路 OTL信号的支路编号值, 也可 以随机选择 n个不同的整数作为 n路 OTL信号的支路编号值, 还可 以将 n路 OTL信号帧中对应的 OTUCn 的 ID值作为 n路 OTL信号 的支路编号值。
可选的, 发送装置在根据每个扰码生成多项式分别对相应的 OTL信号进行扰码处理之前, 还需进行如下步骤:
al、 发送装置获取 n路 OTL信号中的每路 OTL信号的支路编 号。
a2、 发送装置获取 n个非相关的扰码生成多项式中的每个扰码 生成多项式的多项式编号。
a3、 发送装置根据每路 OTL 信号的支路编号与每个扰码生成 多项式的多项式编号,为每路 OTL信号分配相应的 ·ί尤码生成多项式。
其中, 上述的 OTL信号的支路编号可以是存在 OTLCn帧中的 OTUCn的 ID值,也可以是发送装置为每路 OTL信号进行编号后生 成的。
示例性的, 发送装置在根据每个扰码生成多项式分别对相应的 OTL信号进行扰码处理之前, 需要根据每路 OTL信号的支路编号和 每个扰码生成多项式的多项式编号为每路 OTL信号分配一个相应的 扰码生成多项式, 使得发送装置所发送的 n路每路 OTL信号可以根 据不同的扰码生成多项式进行扰码, 进而解决了多路每路 OTL信号 并行扰码后,跨 OTL信号复用所带来的线路中出现场 0长 1 的现象。
需要说明的是, 步骤 303 中所述的 n个非相关的扰码生成多项 式是发送装置在发送 OTUCn信号之前, 进行初始化时获取的, 或者 是该发送装置出厂之前便已被固化在该发送装置中。 可选的, 发送装置根据 OTL信号数 n获取 n个非相关的扰码 生成多项式包括两种实现方式。
b l、 发送装置根据 OTL信号数 n从预配置的扰码生成多项式 库中获取 n个非相关的扰码生成多项式。
或者,
b2、 发送装置确定扰码生成多项式的最高阶数; 确定小于扰码 生成多项式的最高阶数的所有质数; 根据 OTL信号数 n , 生成 n个 非相关的扰码生成多项式, 其中, 每个扰码生成多项式中除最高阶 数的项和常数项以外的所有项的阶数均是所述所有质数中的数, 且 任意两个多项式均不相同。
示例性的, 发送装置根据 OTL信号数 n获取 n个非相关的扰 码生成多项式, 主要是根据 OTL信号数 n在预先建立的扰码生成多 项式库或通过预先配置的扰码生成多项式生成策略, 来获取 n 个非 相关 ·ί尤码生成多项式 ( (χ), (?2 (χ), ...... , Gr (x) )。 其中, 上述的 ·ί尤码生成多 项式库中存储至少 η 个非相关的扰码生成多项式; 而上述的扰码生 成多项式生成策略可以通过从网络管理器向发送装置下发的扰码生 成多项式生成策略相关的配置信息中获取, 也可以是预先配置的。
需要说明的是, 发送装置在获取到 η个非相关的扰码生成多项 式后, 还需获取 η路 OTL信号与 η个非相关的扰码生成多项式的对 应关系, 该对应关系可以是该发送装置自 己生成的, 也可以是从网 络管理器中获取, 还可以是预先存储在发送装置中的。 其中, 该对 应关系描述了在对每路 OTL信号进行扰码时所釆用的扰码生成多项 式。
示例性的, 上述 η路 OTL信号中支路编号为 r的 OTL信号对 应的 ·ί尤码生成多项式为 (x) = l + r + , 该 X是 ·ί尤码生成多项式中除最 高阶单项式和常数项以外的项, 是根据 OTL信号的支路编号 r来确 定; 其中, 上述的参数 b 为该扰码生成多项式的最高阶数, 是预配 置或通过网络管理器下发至发送装置的, 且该参数 b为 自然数。
基于步骤 b l 的获取 n个非相关的扰码生成多项式的方式一: 通过如表 1所示的预先建立的扰码生成多项式库中获取相关的 扰码生成多项式。 具体的, 在使用上述扰码生成多项式库前, 首先 需要获取每路 OTL信号的支路编号, 然后根据每路 OTL信号的支 路编号从扰码生成多项式库获取对应的扰码生成多项式。
Figure imgf000032_0001
表 1
基于步骤 b2的获取 n个非相关的扰码生成多项式的方式二: 通过预先建立的扰码生成多项式库或通过预先配置的扰码生 成多项式生成策略获取相关的扰码生成多项式, 例如。
1 )、 确定扰码生成多项式最高阶数为 16;
2 )、 选择小于 16的质数 ( 1、 3、 7、 11、 13, 总共 5个质数) 作为其他阶数; 第 n路支路信号的扰码生成多项式为 G(x) = l + + x16; 其中 X随着 η的变化而变化。
第 1轮选择 1 个质数, 从高到低依次选择 1 个小于 16的质数 作为阶数, 总共可产生 =5个扰码生成多项式。 依次根据每路 OTL 信号的支路编号获取对应的扰码生成多项式,例如,对于第 1路 OTL 信号, 选择 1个小于 16的最高质数作为阶数, 也即 = χ3; 对于第 2 路 OTL信号, 选择 1个小于 16的次高质数作为阶数, 也即 = χ"; 依次类推, 直到第 5路 OTL信号, 选择到 1个小于 16的最小质数 1 作为阶数, 也即 = 。
第 2轮选择 2个质数, 从高到选择依次组合选择 2个小于 16 的质数作为阶数, 总共可产生 C5 2=10个扰码生成多项式。 对于第 6路 OTL信号, 选择 = x"+x13; 对于第 7路 OTL信号, 选择 = x7+x13; 对于第 8路 OTL信号, 选择 X = x3 + x13; 对于 9路 OTL信号, 选 择 = x3 + xB ; 对于第 10 路 OTL 信号, 选择 = χ7 + χ" ; 直到第 15 路 OTL信号, 选择 = + 。
第 3 轮选择 3 个质数, 从高到选择依次组合选择 3 个小于 16 的质数作为阶数, 总共可产生 C5 3 = 10个扰码生成多项式; 依次类推, 进行第 4轮选择 4个质数, 从高到选择依次组合选择 4个小于 16的 质数作为阶数, 总共可产生 C5 4 =5个扰码生成多项式。
基于上述描述, 可以知道的是, 发送装置具体需要生成多少个 扰码生成多项式, 取决于 OTL信号数 n。
304、 发送装置将扰码后的 OTL信号通过子载波传送至接收装 置。
可选的, 步骤 304具体包括:
304b l、发送装置每路扰码后的 OTL信号拆分为 c路逻辑通道, 共得 c*n路逻辑通道, 其中, 上述的参数 c为 自然数;
304b2、发送装置将 c*n路逻辑通道复用为 m路支路复用信号; 304a3、 发送装置将 m路支路复用信号通过子载波传送至接收 装置。
示例性的, 步骤 304b2中将 c*n路逻辑通道交叉比特复用为 m 路支路复用信号可以有两种方式: 方式一、 被复用为一路支路复用 信号的所有逻辑通道均是由一路 OTL信号拆分而成的 c路逻辑通道 中的部分逻辑通道或者全部逻辑通道; 方式二、 被复用为一路支路 复用信号的逻辑通道中至少包含两路逻辑通道, 该两路逻辑通道不 是由同一路 OTL信号拆分而成的逻辑通道, 例如, 被复用为一路支 路复用信号的逻辑通道中包含逻辑通道 1 和逻辑通道 2 , 其中, 逻 辑通道 1是由 OTL# l拆分而成的逻辑通道, 逻辑通道 2是由 OTL#2 拆分而成的逻辑通道由两路不同的 OTL信号拆分而成的逻辑通道。
示例性的,发送装置将 c*n路逻辑通道复用为 m路支路复用信 号, 是指将 c*n路逻辑通道以任意组合方式划分为 m等份, 在每 1 等份中包含 ( c*n ) /m路逻辑通道, 将每 1 等份中的 c*n/m路逻辑 通道复用为 1路支路复用信号, 并通过 1路子载波传送至接收装置。 其中, 参数 C为 自然数。
可选的, 步骤 304具体包括:
304b2、发送装置将 n路扰码后的 OTL信号复用为 m路支路复 用信号。
示例性的, 发送装置在将 n路扰码后的 OTL信号复用为 m路 支路复用信号的时候, 可以将每 n/m路扰码后的 OTL信号复用为 1 路支路复用信号, 也可以将任意几路 OTL信号复用为 1路支路复用 信号, 即 m路支路复用信号中的每路支路复用信号中的 OTL信号的 数量各不相同, 例如, 复用为第一路支路复用信号的 OTL信号的数 量为 3路,复用为第二路支路复用信号的 OTL信号的数量为是 4路, 还可以将所有的 n 路支路信号当做一个整体看待轮流分发到 m 路 上, 生成 m路支路复用信号。
304b2、 将所述 m路支路复用信号通过子载波传送至所述接收 装置。
本发明的实施例提供的光传送网中信号传输的方法, 通过将 OTUCn信号分发为 n路 OTL支路信号, 并根据 n个非相关的扰码 生成多项式中每个扰码生成多项式, 分别对相应的 OTL信号进行扰 码处理, 最后将扰码后的 OTL信号通过子载波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码处理, 从而导致线路传输中可能会出现长 0 或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明提 供的方案通过 n个非相关的扰码生成多项式对 n路 OTL信号进行扰 码处理, 即根据扰码生成多项式对 OTL信号的原始数据流进行再编 码, 扰码后的 OTL信号的数据流打破了原始数据流中这种连续 0或 者连续 1 出现的情况, 还能避免由不同 OTL信号拆分而成的逻辑通 道复用一路支路复用信号时出现的连续 0或者连续 1 的情况, 从而 避免了线路中出现长 0或长 1 出现的情况, 进而保证了接收端能够 正确恢复数据流。 本发明的实施例提供一种光传送网中信号传输的方法,如图 13 所示, 由接收装置实现, 具体的, 本实施例主要针对接收端携带扰 码规划对接收到的信号进行处理的过程, 其中, 该光传送网中信号 传输的方法具体包括如下步骤:
401、 接收装置获取 n路 OTL光通道传输支路信号。
其中, 上述的 n路 OTL信号是由一路 OTUCn光通道传输单元 信号分发而成的, n大于等于 2。
示例性的, OTUCn信号分发为 n路 OTL信号, 在一实施例中, 该 OTL信号是速率为 100Gbit/s级别的信号, 将其称之为 OTLC 1 , 相应地, 该 n路 OTLC 1信号被编号为 OTLC 1 # 1 , OTLC 1 #2 , OTLC l #n。位于每一路 OTLC 1信号的第 1行的第 1 歹 'J的 OTUCn ID 开销, 携带有该路 OTLC l信号的编号信息。
需要说明的是, 当接收装置接收到的是 m路支路复用信号, 首 先需要将接收到的 m路支路复用信号进行解复用, 恢复出 c*n路逻 辑通道, 并将 c*n路逻辑通道恢复为 n路 OTL信号, 或者, 直接将 m路支路复用信号进行解复用恢复为 n路 OTL信号, 之后针对每路 OTL信号进行解扰码处理, 将解扰后的 n路 OTL信号重组为 1 路 OTUCn信号。
402、 接收装置基于 n 个非相关的扰码生成多项式中每个扰码 生成多项式, 对 n路 OTL信号分别进行解扰码处理。
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
可选的, 接收装置在根据每个扰码生成多项式分别对相应的 OTL信号进行扰码处理之前, 还需进行如下步骤:
c l、 接收装置获取每路 OTL 信号的支路编号, 及每个扰码生 成多项式的多项式编号。
c2、 接收装置根据每路 OTL 信号的支路编号与每个扰码生成 多项式的多项式编号, 查找每路 OTL信号对应的扰码生成多项式。 其中, 上述的 OTL信号的支路编号可以是存在 OTLCn帧中的 OTUCn ID , 也可以是接收装置为每路 OTL信号进行编号后生成的。
示例性的, 接收装置在根据每个扰码生成多项式分别对相应的 OTL信号进行扰码处理之前, 需要获取每路 OTL信号的支路编号和 每个扰码生成多项式的多项式编号, 根据与发送端相同的匹配策略 为每路 OTL信号分配一个与发送端相同的扰码生成多项式, 使得发 送端与接收端可以根据相同的扰码生成多项式为每路 OTL信号进行 扰码与解扰码处理。
需要说明的是, 步骤 402 中所述的 n个非相关的扰码生成多项 式是接收装置在接收到获取 OTL信号之前, 进行初始化时获取的, 或者是该接收装置出厂之前便已被固化在该接收装置中。
可选的, 接收装置根据 OTL信号数 n获取 n个非相关的扰码 生成多项式包括两种实现方式。
b l、 接收装置根据 OTL信号数 n从预配置的扰码生成多项式 库中获取 n个非相关的扰码生成多项式。
或者,
b2、 接收装置确定扰码生成多项式的最高阶数; 确定小于扰码 生成多项式的最高阶数的所有质数; 根据 OTL信号数 n生成 n个非 相关的扰码生成多项式。 其中, 上述的每个扰码生成多项式中除最 高阶数的项和常数项以外的所有项的阶数均是所述所有质数中的 数, 且任意两个多项式均不相同。
示例性的, 接收装置根据 OTL信号数 n获取 n个非相关的扰 码生成多项式, 主要是根据 OTL信号数 n在预先建立的扰码生成多 项式库或通过预先配置的扰码生成多项式生成策略, 来获取 n 个非 相关扰码生成多项式 ( (χ), (?2 (χ), ...... , Gr (x) )。 其中, 上述的扰码生成多 项式库中存储 n个非相关的扰码生成多项式; 而上述的扰码生成多 项式生成策略可以通过从网络管理器向接收装置下发的扰码生成多 项式生成策略相关的配置信息中获取, 也可以是预先配置的。
需要说明的是, 接收装置在获取到 n个非相关的扰码生成多项 式后, 还需获取 η路 OTL信号与 n个非相关的扰码生成多项式的对 应关系, 该对应关系可以是该接收装置自 己生成的, 也可以是从网 络管理器或发送装置中获取。其中,该对应关系描述了在对每路 OTL 信号进行扰码时所釆用的扰码生成多项式。
示例性的, 上述的 n路 OTL信号中支路编号为 r的 OTL信号 对应的 ·ί尤码生成多项式为 (χ) = 1 + + χέ , 该 X是 ·ί尤码生成多项式中除 最高阶单项式和常数项以外的项, 是根据 OTL信号的支路编号 r来 确定; 其中, 上述的参数 b 为该扰码生成多项式的最高阶数, 是预 配置或通过网络管理器下发至接收装置的, 且该参数 b为 自然数。
具体的, 本发明的实施例提供了两种获取 n个非相关的扰码生 成多项式的方式, 一种是基于图 12对应实施例中的步骤 b l 的获取 n个非相关的扰码生成多项式的方式一, 一种是基于图 12对应实施 例中的步骤 b2的获取 n个非相关的扰码生成多项式的方式二。 由于 发送端与接收端获取扰码生成多项式的具体过程相同, 而上述的两 种实现方式在图 12 对应的由发送装置实现的光传送网中信号传输 的方法的实施例中已有描述, 这里不再赘述。
403、接收装置将解扰码后的 n路 OTL信号重组为 1路 OTUCn 信号。
需要说明的是, 接收装置中在对 n个非相关的扰码生成多项式 中每个扰码生成多项式对应的 OTL信号进行解扰码处理后, 可以对 解扰码后的 n路 OTL信号分别进行 FEC解码处理。 具体的, 上述的 FEC 编码为一种通用纠错技术, 在接收端通常用于对接收到的数据 流进行解码处理, 可以纠正传送过程中引入的错误, 确保收发数据 一致。 本发明优选釆用釆用 NS ( Need Solomon , 雷蒙)(255 , 239 , t=8 , m=8)编码方式, 该编码方式的 1个符号大小为 8bit , 即 m=8 ; 一个码字大小为 255个符号, 即 255 *8=2040bit; 其中有效净荷区大 小为 239个符号, 也即 239*8= 1912bit; 其 t=8代表, 一个码字中最 大可纠正 8个符号错误。
本发明的实施例提供的光传送网中信号传输的方法, 通过将 OTUCn信号分发为 n路 OTL信号, 并根据 n个非相关的扰码生成 多项式中每个扰码生成多项式, 分别对相应的 OTL信号进行扰码处 理, 最后将扰码后的 OTL信号通过子载波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特 复用后便发送至接收装置,并没有对 OTUCn信号或者拆分后的 OTL 信号进行扰码处理, 从而导致了线路传输中可能会出现长 0 或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明 提供的方案通过 n个非相关的扰码生成多项式对 n路 OTL信号进行 扰码处理, 即根据扰码生成多项式对 OTL信号的原始数据流进行再 编码, 扰码后的 OTL信号的数据流打破了原始数据流中这种连续 0 或者连续 1 出现的情况, 还能避免由不同 OTL信号拆分而成的逻辑 通道复用一路支路复用信号时出现的连续 0或者连续 1 的情况, 从 而避免了线路中出现长 0或长 1 出现的情况, 进而保证了接收端能 够正确恢复数据流。
下面将示例性的对本发明实施例提供的光传送网中信号传输 的方法在具体场景中进行介绍。 以下实施例中与上述实施例相关的 技术术语、 概念等的说明可以参照上述的实施例。
以下实施例主要针对发送端将信号进行扰码后传输至接收端 的过程, 以及接收端接收扰码处理后的信号进行解扰码过程, 示例 性的, 本实施例根据扰码参数的不同, 对应的, 所提供的发送端将 信号进行扰码后传输至接收端及接收端接收扰码处理后的信号进行 解扰码的过程具体包括两种实现方式。
需要说明的是, 本实施例中的 OTUCn 信号在这里以 n* 100G 的 OTUCn 信号为例, 本实施例中的 OTL 信号在这里以速率为 100Gbit/s级别的速率) 的 OTLC 1信号为例, 该 n路 OTLC 1信号被 依次编号为 OTLC 1 # 1 , OTLC 1 #2 , OTLC 1 #n。 此外, 在本实 施例中, 当对 n路 OTLC 1信号进行拆分时, 每路 OTLC 1信号分别 拆分为 4路 OTLCn.4n逻辑通道为例。
参照图 14 ,发送端携带扰码规划将信号传输至接收端的过程具 体包括如下步骤:
501、 发送装置将接收到的 OTUCn信号分发为 n路 OTLC1信 号, 并确定 OTLC1信号数 n。
示例性的,发送装置将 OTUCn信号以字节粒度(即,将 OTUCn 帧从第一个字节开始, 依次分发到 n路) 分发为 n路 OTLCK
502、 发送装置将 n路 OTLC1信号分别进行 FEC编码。
其中, 步骤 502中釆用的何种 FEC编码不做限制, 优选 NS编 码方式。
503、 发送装置基于 OTLC1信号数 n获取 n个非相关的扰码生 成多项式 ( G^x G^x),…… ,G„(x))。
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
504、 发送装置为每路 OTLC1 信号分配相应的扰码生成多项 式。
示例性的, 发送装置根据每路 OTLC1 信号的支路编号 (如, 位于 OTUCn帧的 OTUCn ID开销区中的 OTLC1 的编号),及每个扰 码生成多项式的多项式编号, 为每路 OTLC 1信号分配相应的 ·ί尤码生 成多项式。 例如, 为编号为 OTLC 1 #1 的 OTLC 1信号分配多项式编 号为 1 的 ·ί尤码生成多项式, 编号 OTLC 1 #2的 OTLC 1信号分配多项 式编号为 2的扰码生成多项式。
505、 发送装置基于 n个非相关的扰码生成多项式, 对 OTLC1 信号分别进行扰码处理。
示例性的, 在对 n路 OTLC1 信号进行扰码处理之前, 基于 n 先获取 n个非相关扰码生成多项式, c G x), ...... ,Gn(x);对 n路 OTLC 1 信号分别釆用对应的 n个非相关扰码生成多项式 <^(χ), (χ), ...... ,G„(x)进 行帧同步扰码处理; 其中, 上述的每路 OTLC1信号除帧头字节 (第 1 行的第 1〜6 列 ) 不进行扰码外, 其他字节都需要进行帧同步扰码 处理。 具体的帧同步扰码处理过程如下。 例如, 按照图 12 实施例中获取 n个非相关的扰码生成多项式 的方式一和方式二所产生的第 1路 OTLC 1对应的 ·ί尤码生成多项式为 (χ) = 1 + χ1316 , 其对应扰码电路如图 15 所示, 第 1 路 OTLC1 信号 按照图 15所示的扰码电路进行扰码处理。 初始时, 复位值为全 1, 也即为十六进制表示的 "FFFF"; 在第 1路 OTLC1信号的时钟驱动 下,第 1路 OTLC1信号从第 1行第 7列开始依次从"扰码前 OTLC1" 信号接口输入, 其中针对每一个字节的输入顺序为高优先, 即高比 特先于低比特输入, 每一个字节先输入第 7 比特, 最后输入第 0 比 特; 经过帧同步扰码后, 从 "扰码后 OTLC1" 接口信号输出, 从而 得到经过帧同步扰码后的第 1路 OTLC1信号。
进一步, 第 2路 OTLC1对应的扰码生成多项式 G2(x) = l + x"+x16 , 其对应扰码电路如图 16所示, 第 2路 OTLC1信号按照图 16所示的 扰码电路进行扰码处理, 第 2路 OTLC1 信号及后续的其他 OTLC1 信号的扰码处理过程与第 1路 OTLC1对应的扰码过程相似, 这里不 再赘述。 相应的, 其他 n-2路 OTLC1对应的扰码过程与上述第 1、 2 路 OTLC1对应的扰码过程相似, 因此, 这里不再赘述。
506、 发送装置将 n 路扰码后的 OTLC1 信号拆分为 4*n 路 OTLC1.4n逻辑通道。
示例性的, 发送装置将 n路扰码后的 OTLC1 信号拆分为 4*n 路 OTLC1.4n逻辑通道的过程如下。
针对 n路扰码后的 OTLC1信号中的其中 1路 OTLC1信号, 且 将该 OTLC1信号拆分为 4路 OTLC1.4n逻辑通道示例进行描述。
具体的, 当以图 2所示 OTL帧的帧结构为例, 且以 4个 OTL 帧为周期时, 每个 OTL 帧中以 16 字节为粒度被划分为 1020个 16 字节块, 其中第 1个 16字节块包含了帧头指示 FALC1 (在帧头指示 的第 6个字节为 LLM字节开销, 取值范围 0〜239, 从第 1 帧开始依 次从 0赋值, 直到第 240帧赋值为 239后, 在下一帧开始新一轮), 以 16字节块为单位轮询分发每个帧中的 1020个 16字节块到 4路逻 辑通道; 而当以图 4 所示的 OTL 帧的帧结构为例, 且以 4 个 OTL 帧为周期时, 每个 OTL帧中以 16字节为粒度被划分为 956个 16字 节块, 其中第 1个 16字节块包含了帧头指示 FALC 1 , 以 16字节块 为单位轮询分发每个帧中的 956个 16字节块到 4路逻辑通道。 示例 性的, 在第 1 帧从第 1路逻辑通道开始分发, 在第 2帧从第 2路逻 辑通道开始分发, 在第 3 帧从第 3路逻辑通道开始分发, 在第 4帧 从第 4 路逻辑通道开始分发。 这样保证每路逻辑通道在一个周期内 ( 4个 OTL帧为 1一个周期 ) 都包含帧头指示, 便于接收端通过搜 索帧头指示识别各个逻辑通道。
507、 发送装置将 4*n路 OTLC 1.4n逻辑通道进行复用为 m路 支路复用信号, 并通过 m路子载波传送至接收装置。
示例性的, 如图 17 所示, 可以以 4路 OTLC 1.4 支路信号为 例, 发送装置将该 4路 OTLC 1.4支路信号中的每一路分别拆分为 4 路 OTLC 1. 16逻辑通道, 将 4路 OTLC 1.4支路信号的第 1路逻辑通 道复用为 1路物理通道, 4路 OTLC 1.4支路信号的第 2路逻辑通道 复用为 1路物理通道, 4路 OTLC 1.4支路信号的第 3路逻辑通道复 用为 1路物理通道, 4路 OTLC 1.4支路信号的第 4路逻辑通道复用 为 1 路物理通道。 上述的物理通道即支路复用信号。 复用时釆用轮 询比特间插复用方式。 需要说明的是, 上述的复用方式仅仅是本发 明中的一种可能的实现方式,只要可以将属于不同 100G的逻辑通道 复用在一起的复用方法均属于本发明所要保护的范围。
本发明的实施例提供的光传送网中信号传输的方法, 发送装 置, 通过将 OTUCn信号分发为 n路 OTLC 1 支路信号, 并根据 n个 非相关的 ·ί尤码生成多项式中每个 ·ί尤码生成多项式, 分别对相应的 OTLC 1 信号进行扰码处理, 最后将扰码后的 OTLC 1 信号通过子载 波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 η路 OTLC 1 信号进行比 特复用后便发送至接收装置, 并没有对 OTUCn 信号或者拆分后的 OTLC 1信号进行扰码处理, 从而导致线路传输中可能会出现长 0或 者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本 发明提供的方案通过预先获取的 n 个非相关的扰码生成多项式对 n 路 OTLC1信号进行扰码处理, 即根据扰码生成多项式对 OTLC1 信 号的原始数据流进行再编码, 扰码后的 OTLC1信号的数据流打破了 原始数据流中这种连续 0或者连续 1 出现的情况, 还能避免由不同 OTLC1信号拆分而成的逻辑通道复用成一路支路复用信号时出现的 连续 0或者连续 1 的情况, 从而避免了线路中出现长 0或长 1 出现 的情况, 进而保证了接收端能够正确恢复数据流。
参照图 18,基于步骤 501至 507所描述的发送端将信号进行扰 码后传输至接收端的过程, 对应的, 接收端接收扰码处理后的信号 进行处理的过程包括如下步骤:
601、 接收装置获取 m路支路复用信号, 并将 m路支路复用信 号进行解复用, 恢复出 4*n路 OTLC1.4n逻辑通道。
示例性的, 接收装置将 m路支路复用信号按照比特位单位, 轮 询分发到 4*n路 OTLC1.4n逻辑通道, 从而恢复出 4*n路 OTLC1.4n 逗辑通道。
602、接收装置将 4*n路 OTLC1.4n逻辑通道恢复为 n路 OTLC1 信号。
示例性的, 接收装置在恢复出 4*n路 OTLC1.4n逻辑通道后, 首先将 4*n路 OTLC1.4n逻辑通道分别进行定帧处理, 通过搜索各 逻辑通道中携带的 OTLC1信号帧头图案( OTLC1 帧的第 1行第 2〜5 列 ), 获取各逻辑通道的帧头指示; 其次, 根据上述的各逻辑通道的 帧头指示, 将 4n路 OTLC1.4n逻辑通道对齐, 并根据 OTUCn ID (取 值范围为 0〜(!-1 ), 分别指示第 1〜!!路 OTLC1信号)获知各个逻辑 通道所属的 OTLC1信号, 从而将 4*n路 OTLC1.4n逻辑通道分为 n 组; 最后, 针对每组的 4路 OTLC1.4n逻辑通道, 根据其对应的 LLM ( Logical Lane Marker, 逻辑通道标示) (取值范围定义为 0〜239 ) 将其恢复为 1 路 OTLC1 信号。 具体的, n 组中的任意一组的 4 路 OTLC1.4n逻辑通道恢复为 1路 OTLC1信号的过程为: 接收装置获 取该组的 4路 OTLC1.4n逻辑通道中携带的 LLM ( 0〜239 ) 获知这 4 路 OTLC 1.4n 逻辑通道的编号, 从而根据该编号对该组的 4 路 OTLC1.4n逻辑通道进行重排, 还原出发送前的逻辑通道顺序, 将重 排后的 4路 OTLC1.4n逻辑通道以 16字节块为粒度重组恢复为 1路 100G的 OTLC1信号。 其中, OTUCn信号分发为 n路 OTLC1信号, 其 n路 OTLC1信号的编号 OTLC1 #1 , OTLCl#2, OTLC1 #n。 位于每路 OTLC1信号的第 1 行的第 1 列的 OTUCn ID开销,携带该 路 OTLC1信号的编号信息。
603、接收装置基于 OTLC1信号数 n获取 n个非相关的扰码生 成多项式 (
Figure imgf000043_0001
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式。 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
604、 接收装置为每路 OTLC1 信号分配相应的 ·ί尤码生成多项 式。
示例性的, 接收装置根据每路 OTLC1 信号的支路编号 (如, 位于 OTUCn帧的 OTUCn ID开销区中的 OTLC1 的编号),及每个扰 码生成多项式的多项式编号, 根据发送装置的扰码生成多项式的分 配策略为每路 OTLC1信号分配相应的扰码生成多项式。 例如, 发送 装置设定支路编号为 OTLC1 #1 的 OTLC1信号分配多项式编号为 1 的 ·ί尤码生成多项式, 支路编号 OTLC1 #2的 OTLC1信号分配多项式 编号为 2的扰码生成多项式, 则接收装置对于支路编号为 OTLC1 #1 的 OTLC1信号获取多项式编号为 1的扰码生成多项式对其进行解扰 码处理, 对于支路编号为 OTLC1 #2的 OTLC1信号获取多项式编号 为 2的扰码生成多项式对其进行解扰码处理。
605、 接收装置基于 η 个非相关的扰码生成多项式中每个扰码 生成多项式, 分别对相应的 OTLC1信号进行解扰码处理。
示例性的, 在对 η路 OTLC1 信号进行解扰码处理之前, 基于 η 先获取 η 个非相关扰码生成多项式, ...... ,Gn(x); 对 n 路
OTLC1 信号分别 釆用 对应 的 n 个非相 关扰码生成多 项 式 G^xX G^x), ...... ,G„(x)进行帧同步解扰码处理; 其中, 上述的每路 OTLC 1 信号除帧头字节 (第 1 行的第 1〜6列 ) 不进行解扰码外, 其他字节 都需要进行解扰码处理。 具体的解扰码过程与扰码过程相类似, 因 此, 这里不再赘述。
606、 接收装置将解扰码后的 n路 OTLC 1 信号分别进行 FEC 编码。
其中, 步骤 606中釆用的何种 FEC编码不做限制, 优选 NS编 码方式。
607、 接收装置将 n路 OTLC 1信号重组为 1路 OTUCn信号。 需要说明的是, 在对 n路 OTLC 1 信号进行重组之前, 需要保 证 n路 OTLC 1信号帧头对齐, 之后将 n路 OTLC 1信号按照字节复 用方式重组为 1路 OTUCn信号。
本发明的实施例提供的光传送网中信号传输的方法, 接收装置 通过获取 n路 OTLC l Cn光通道传输支路信号,并根据 n个非相关的 •ί尤码生成多项式中每个 ·ί尤码生成多项式, 分别对相应的 OTLC 1信号 进行解扰码处理, 并将解扰码后的 η 路 OTLC 1 信号重组为 1 路 OTUCn信号。
在现有技术中, 发送装置仅仅只是将 n路 OTLC 1 信号进行比 特复用后便发送至接收装置, 并没有对 OTUCn 信号或者拆分后的 OTLC 1信号进行扰码和解扰码处理, 从而导致了线路传输中可能会 出现长 0或者长 1 的情况, 进而接收端无法恢复出正确的信号数据 流。 本发明提供的方案通过预先获取的 n个非相关的扰码生成多项 式对 n 路 OTLC 1 信号进行解扰码处理, 即根据扰码生成多项式对 OTLC 1 信号的原始数据流进行再编码, 扰码后的 OTLC 1 信号的数 据流打破了原始数据流中这种连续 0或者连续 1 出现的情况, 还能 避免由不同 OTLC 1 信号拆分而成的逻辑通道复用一路支路复用信 号时出现的连续 0 或者连续 1 的情况, 从而避免了线路中出现长 0 或长 1 出现的情况, 进而保证了接收端能够正确恢复数据流。
本发明的实施例提供一种发送设备, 可以用于实现如图 12、 图 13、 图 14和图 18所示实施例中的发送装置。 其工作机制、 与其他 网元的交互、 相关的技术术语、 概念等内容可以参考图 12 至图 18 所示的实施例, 此处不再赘述。
如图 19所示, 该发送设备 7 包括: 通信单元 71和处理器 72 , 其巾:
通信单元 71用于与外部设备通信;
处理器 72用于:
接收 OTUCn光通道传输单元信号, 并将 OTUCn信号分发为 n 路 OTL 光通道传输支路信号, 上述的 OTL信号数 n 为大于等于 2 的整数。
基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行扰码处理。
其中, 所述 n个非相关的扰码生成多项式为 n个无公共因子的 扰码生成多项式。
将扰码后的 OTL信号通过子载波传送至接收装置。
可选的, 该处理器 72 , 还用于根据 OTL信号数 n获取 n个非 相关的扰码生成多项式。
可选的, 处理器 72根据 OTL信号数 n获取 n个非相关的扰码 生成多项式具体用于: 根据 OTL信号数 n从预配置的扰码生成多项 式库中获取 n个非相关的扰码生成多项式; 其中, 上述的扰码生成 多项式库中存储至少 n个非相关的扰码生成多项式。
可选的, 处理器 72根据 OTL信号数 n获取 n个非相关的扰码 生成多项式具体用于: 确定扰码生成多项式的最高阶数; 确定小于 所述扰码生成多项式的最高阶数的所有质数; 根据 OTL信号数 n , 生成 n个非相关的扰码生成多项式。
其中, 上述的每个扰码生成多项式中除最高阶数的项和常数项 以外的所有项的阶数均是所述所有质数中的数, 且任意两个多项式 均不相同。
可选的, 上述 n路 OTL信号中支路编号为 r的 OTL信号对应 的扰码生成多项式为 (x) = l + + , 上述的参数 X是扰码生成多项式 中除最高阶单项式和常数项以外的项, 是根据 OTL信号所对应的支 路编号 r来确定; 其中上述参数 b是预配置或通过网络管理器下发 至所述发送装置的多项式的最高阶数, 所述 b为 自然数。
可选的, 处理器 72将扰码后的 OTL信号通过子载波传送至接 收装置具体用于: 将每路扰码后的 OTL信号拆分为 c路逻辑通道, 共得 c *n路逻辑通道; 其中, 所述 c为 自然数; 将 c *n路逻辑通道 复用为 m路支路复用信号; 将 m路支路复用信号通过子载波传送至 所述接收装置。
可选的,上述 m路支路复用信号中的每路支路复用信号是由至 少两路逻辑通道复用得到的; 其中, 上述的两路逻辑通道不是由同 一路扰码后的 OTL信号拆分而成的逻辑通道。
可选的, 处理器 72将扰码后的 OTL信号通过子载波传送至接 收装置具体用于:将 n路扰码后的 OTL信号复用为 m路支路复用信 号; 将上述 m路支路复用信号通过子载波传送至接收装置。
可选的, 处理器 72 , 还用于存储 n路 OTL信号与所述 n个非 相关的扰码生成多项式的对应关系; 或者生成 n路 OTL信号与所述 n 个非相关的扰码生成多项式的对应关系; 或者从网络管理器获得 上述 n路 OTL信号与 n个非相关的扰码生成多项式的对应关系。
其中, 上述的对应关系描述了在对每路 OTL 信号进行扰码时 所述每路 OTL信号所釆用的扰码生成多项式。
可选的, 处理器 72基于 n个非相关的扰码生成多项式, 对 n 路 OTL信号分别进行扰码处理具体用于: 根据所述对应关系为每一 路 OTL信号选择相应的扰码生成多项式进行扰码处理。
本发明的实施例提供的发送设备, 通过将 OTUCn信号分发为 n路 OTL支路信号, 并根据 n个非相关的扰码生成多项式中每个扰 码生成多项式, 分别对相应的 OTL信号进行扰码处理, 最后将扰码 后的 OTL信号通过子载波传送至接收装置。
在现有技术中, 发送装置仅仅只是将 n路 OTL信号进行比特复用后 便发送至接收装置, 并没有对 OTUCn信号或者拆分后的 OTL信号 进行扰码处理, 从而导致线路传输中可能会出现长 0或者长 1 的情 况, 进而导致接收端无法恢复出正确的信号数据流。 本发明提供的 方案通过预先获取的 n个非相关的扰码生成多项式对 n路 OTL信号 进行扰码处理, 即根据扰码生成多项式对 OTL信号的原始数据流进 行再编码, 扰码后的 OTL信号的数据流打破了原始数据流中这种连 续 0或者连续 1 出现的情况, 还能避免由不同 OTL信号拆分而成的 逻辑通道复用一路支路复用信号时出现的连续 0或者连续 1的情况, 从而避免了线路中出现长 0或长 1 出现的情况, 进而保证了接收端 能够正确恢复数据流。
本发明的实施例提供一种接收设备, 可以用于实现如图 12、 图 13、 图 14和图 18所示实施例中的接收装置。 其工作机制、 与其他 网元的交互、 相关的技术术语、 概念等内容可以参考图 12 至图 18 所示的实施例, 此处不再赘述。
如图 20所示, 该接收设备 8 包括: 通信单元 81和处理器 82 , 其巾:
通信单元 81 , 用于与外部设备通信;
处理器 82用于:
获取 n路 OTL光通道传输支路信号。
其中, 上述的 n路 OTL信号是由一路 OTUCn光通道传输单元 信号分发而成的, n大于等于 2。
基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分 别进行解扰码处理。
其中, 上述的 n个非相关的扰码生成多项式为 n个无公共因子 的扰码生成多项式; 本发明中的 n 个无公共因子的扰码生成多项式 是指任意两个扰码生成多项式之间不能互相整除。
将解扰码后的 n路 OTL信号重组为一路 OTUCn光通道传输单 元信号。
可选的, 处理器 82 , 还用于根据 OTL信号数 n获取 n个非相 关的扰码生成多项式。
进一步可选的, 处理器 82根据 OTL信号数 n获取 n个非相关 的扰码生成多项式具体用于: 根据所述 OTL信号数 n从预配置的扰 码生成多项式库中获取 n 个非相关的扰码生成多项式; 其中所述扰 码生成多项式库中存储至少 n个非相关的扰码生成多项式。
进一步可选的, 处理器 82根据 OTL信号数 n获取 n个非相关 的扰码生成多项式具体用于: 确定扰码生成多项式的最高阶数; 确 定小于所述扰码生成多项式的最高阶数的所有质数; 根据 OTL信号 数 n , 生成 n个非相关的扰码生成多项式。
其中, 上述的每个扰码生成多项式中除最高阶数的项和常数项 以外的所有项的阶数均是所述所有质数中的数, 且任意两个多项式 均不相同。
可选的, 上述 n路 OTL信号中支路编号为 r的 OTL信号对应 的扰码生成多项式为 (χ) = 1 + + χέ , 上述的参数 X是扰码生成多项式 中除最高阶单项式和常数项以外的项, 是根据所述 OTL信号所对应 的支路编号 r来确定; 其中所述 b是预配置或通过网络管理器下发 至所述接收装置的多项式的最高阶数, 所述 b为 自然数, 所述 r在 1 到 n的整数中取值。
可选的, 处理器 82获取 n路 OTL光通道传输支路信号具体用 于: 将接收到的 m路支路复用信号进行解复用, 恢复出 c *n路逻辑 通道, 并将 c *n路逻辑通道恢复为 n路 OT信号; 或者, 将接收到 的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
可选的, 处理器 82 , 还用于获取每路 OTL信号的支路编号, 及每个扰码生成多项式的多项式编号; 根据每路 OTL信号的支路编 号与每个扰码生成多项式的多项式编号, 查找每路 OTL信号对应的 扰码生成多项式。
可选的, 处理器 82 , 还用于存储 n路 OTL信号与 n个非相关 的扰码生成多项式的对应关系; 或者生成 n路 OTL信号与 n个非相 关的扰码生成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号与 n个非相关的扰码生成多项式的对应关系。
其中, 上述的对应关系描述了在对每路 OTL 信号进行扰码时 所述每路 OTL信号所釆用的扰码生成多项式。
本发明的实施例提供的接收设备, 该接收设备通过获取 n 路 OTLCn光通道传输支路信号, 并根据 n个非相关的扰码生成多项式 中每个扰码生成多项式, 分别对相应的 OTL信号进行解扰码处理, 并将解扰码后的 n路 OTL信号重组为 1路 OTUCn信号。
在现有技术中, 发送设备仅仅只是将 n或者拆分后的 OTL信 号进行扰码和解扰码处理, 从而导致了线路传输中可能会出现长 0 或者长 1 的情况, 进而导致接收端无法恢复出正确的信号数据流。 本发明提供的方案通过预先获取的 n个非相关的扰码生成多项式对 n路 OTL信号进行解扰码处理, 即根据扰码生成多项式对 OTL信号 的原始数据流进行再编码, 扰码后的 OTL信路 OTL信号进行比特 复用后便发送至接收设备,并没有对 OTUCn信号号的数据流打破了 原始数据流中这种连续 0或者连续 1 出现的情况, 还能避免由不同 OTL信号拆分而成的逻辑通道复用一路支路复用信号时出现的连续 0或者连续 1 的情况, 从而避免了线路中出现长 0或长 1 出现的情 况, 进而保证了接收端能够正确恢复数据流。
本发明实施例提供的发送装置和接收装置还可以构成光传送网中 信号传输系统, 以实现如图 1 2至图 1 8所示实施例提供的光传送网中信 号传输方法。 示例性的, 如图 21 所示, 该光传送网中信号传输系统 9 包括: 发送装置 91及接收装置 92。 其中, 发送装置 91可以是如图 5至 8 所示的发送装置; 该接收装置 92可以是如图 9至 1 1所示的接收装置。
本发明的实施例提供的光传送网中信号传输系统, 通过在发送 端和接收端设置相同的扰码生成多项式生成策略, 使得发送端和接 收端可以根据该扰码生成多项式生成策略为每路 OTL信号生成对应 的扰码生成多项式, 使得 OTL信号可以根据对应的扰码生成多项式 进行扰码或解扰码处理。
在现有技术中, 发送端仅仅只是将 n路 OTL信号进行比特复 用后便发送至接收端, 并没有对 OTUCn信号或者拆分后的 OTL信 号进行扰码处理, 这样在多路 OTL 信号进行比特复用时, 导致了 OTL信号的原始数据流中的长 0长 1 进行了扩展, 进而导致接收端 无法恢复出正确的信号数据流。 而本发明则不同, 本发明通过预先 获取的 n个非相关的扰码生成多项式对 n路 OTL信号进行扰码处理, 即通过扰码生成多项式对 OTL信号的原始数据流进行再编码, 使得 扰码后的 OTL信号的数据流不仅打破了原始数据流中这种连续 0或 者连续 1 出现的情况, 而又由于这 n个扰码生成多项式之间是非相 关的, 即使在将由不同 OTL信号拆分而成的逻辑通道复用到一路物 理通道时, 该物理通道上传输的数据流也不会出现长 0或长 1 的情 况, 进而保证了接收端能够正确恢复 OTUCn信号。
本发明实施例提供的发送设备和接收设备还可以构成光传送网中 信号传输系统, 以实现如图 1 2至图 1 8所示实施例提供的光传送网中信 号传输方法。示例性的,如图 11所示,该光传送网中信号传输系统 S 1 0 包括: 发送设备 S 1 01及接收设备 S 1 02。 其中, 发送设备 S 1 01可以是如图 1 9所示的发送设备; 该接收设备 S 1 02可以是如图 2 0所示的接收设备。
本发明的实施例提供的光传送网中信号传输系统, 通过在发送 端和接收端设置相同的扰码生成多项式生成策略, 使得发送端和接 收端可以根据该扰码生成多项式生成策略为每路 OTL信号生成对应 的扰码生成多项式, 使得 OTL信号可以根据对应的扰码生成多项式 进行扰码或解扰码处理。
在现有技术中, 发送端仅仅只是将 n路 OTL信号进行比特复 用后便发送至接收端, 并没有对 OTUCn信号或者拆分后的 OTL信 号进行扰码处理, 这样在多路 OTL 信号进行比特复用时, 导致了 OTL信号的原始数据流中的长 0长 1 进行了扩展, 进而导致接收端 无法恢复出正确的信号数据流。 而本发明则不同, 本发明通过预先 获取的 n个非相关的扰码生成多项式对 n路 OTL信号进行扰码处理 , 即通过扰码生成多项式对 OTL信号的原始数据流进行再编码, 使得 扰码后的 OTL信号的数据流不仅打破了原始数据流中这种连续 0或 者连续 1 出现的情况, 而又由于这 n个扰码生成多项式之间是非相 关的, 即使在将由不同 OTL信号拆分而成的逻辑通道复用到一路物 理通道时, 该物理通道上传输的数据流也不会出现长 0或长 1 的情 况, 进而保证了接收端能够正确恢复 OTUCn信号。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简 洁, 仅以上述各功能模块的划分进行举例说明, 实际应用中, 可以 根据需要而将上述功能分配由不同的功能模块完成, 即将装置的内 部结构划分成不同的功能模块, 以完成以上描述的全部或者部分功 能。 上述描述的系统, 装置和单元的具体工作过程, 可以参考前述 方法实施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置 实施例仅仅是示意性的, 例如, 所述模块或单元的划分, 仅仅为一 种逻辑功能划分, 实际实现时可以有另外的划分方式, 例如多个单 元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽 略, 或不执行。 另一点, 所显示或讨论的相互之间的耦合或直接耦 合或通信连接可以是通过一些接口, 装置或单元的间接耦合或通信 连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上 分开的, 作为单元显示的部件可以是或者也可以不是物理单元, 即 可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据 实际的需要选择其中的部分或者全部单元来实现本实施例方案的目 的。
另外, 在本申请各个实施例中的各功能单元可以集成在一个处 理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以 上单元集成在一个单元中。 上述集成的单元既可以釆用硬件的形式 实现, 也可以釆用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立 的产品销售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本申请的技术方案本质上或者说对现有技术做出 贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体 现出来, 该计算机软件产品存储在一个存储介质中, 包括若干指令 用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者网络 设备等) 或处理器 ( processor ) 执行本申请各个实施例所述方法的 全部或部分步骤。 而前述的存储介质包括: U 盘、 移动硬盘、 只读 存储器( ROM , Read-Only Memory )、随机存取存储器( RAM , Random Access Memory ) , 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对 其限制; 尽管参照前述实施例对本申请进行了详细的说明, 本领域 的普通技术人员应当理解: 其依然可以对前述各实施例所记载的技 术方案进行修改, 或者对其中部分技术特征进行等同替换; 而这些 修改或者替换, 并不使相应技术方案的本质脱离本申请各实施例技 术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种发送装置, 其特征在于, 包括:
分发单元, 用于接收 OTUCn 光通道传输单元信号, 并将所述 OTUCn信号分发为 n路 OTL光通道传输支路信号, 所述 n为大于等 于 2的整数;
扰码单元, 用于基于 n 个非相关的扰码生成多项式, 对所述 n 路 OTL信号分别进行扰码处理; 其中, 所述 n个非相关的扰码生成 多项式为 n个无公共因子的扰码生成多项式;
传送单元, 用于将所述扰码单元扰码后的 OTL信号通过子载波 传送至接收装置。
2、 根据权利要求 1所述的发送装置, 其特征在于, 所述发送装 置还包括:
获取单元, 用于根据 OTL信号数 n获取 n个非相关的扰码生成 多项式。
3、 根据权利要求 2所述的发送装置, 其特征在于:
所述获取单元具体用于: 根据所述 OTL信号数 n从预配置的扰 码生成多项式库中获取 n个非相关的扰码生成多项式; 其中, 所述扰 码生成多项式库中存储至少 n个 ·ί尤码生成多项式。
4、 根据权利要求 2所述的发送装置, 其特征在于:
所述获取单元具体用于: 确定扰码生成多项式的最高阶数; 确 定小于所述扰码生成多项式的最高阶数的所有质数; 根据所述 OTL 信号数 η, 生成 η个非相关的扰码生成多项式, 其中, 每个扰码生成 多项式中除最高阶数的项和常数项以外的所有项的阶数均是所述所 有质数中的数, 且任意两个多项式均不相同。
5、 根据权利要求 1至 4任一项所述的发送装置, 其特征在于, 所述 η路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成多项 式为 (x) = l + ; + , 所述 X是扰码生成多项式中除最高阶单项式和常 数项以外的项, 是根据所述 OTL信号所对应的支路编号 r 来确定; 其中所述 b 是预配置或通过网络管理器下发至所述发送装置的多项 式的最高阶数, 所述 b为自然数。
6、 根据权利要求 1至 5任一项所述的发送装置, 其特征在于, 所述传送单元包括:
拆分模块, 用于将所述扰码单元获得的每路扰码后的 OTL信号 拆分为 c路逻辑通道, 共得 c*n路逻辑通道; 其中, 所述 c为 自然数; 第一复用模块, 用于将所述拆分模块拆分出的所述 c*n路逻辑 通道复用为 m路支路复用信号;
第一传送模块, 用于将所述复用模块复用的 m路支路复用信号 通过子载波传送至所述接收装置。
7、 根据权利要求 6所述的发送装置, 其特征在于, 所述第一复 用模块包含至少一个复用子模块, 所述复用子模块用于将至少两路逻 辑通道复用成一路支路复用信号, 其中, 所述两路逻辑通道不是由同 一路扰码后的 OTL信号拆分而成的逻辑通道。
8、 根据权利要求 1至 5任一项所述的发送装置, 其特征在于, 所述传送单元包括:
第二复用模块,用于将 n路扰码后的 OTL信号复用为 m路支路 复用信号;
第二传送模块, 用于将所述复用模块复用的 m路支路复用信号 通过子载波传送至所述接收装置。
9、 根据权利要求 1至 8任一项所述的发送装置, 其特征在于, 所述发送装置还包括:
对应关系管理单元, 用于存储所述 n路 OTL信号与所述 n个非 相关的扰码生成多项式的对应关系; 或者用于生成所述 n路 OTL信 号与所述 n个非相关的扰码生成多项式的对应关系; 或者用于从网络 管理器获得所述 n路 OTL信号与所述 n个非相关的扰码生成多项式 的对应关系;
其中 , 所述对应关系描述了在对每路 OTL信号进行扰码时所述 每路 OTL信号所釆用的扰码生成多项式。
10、 根据权利要求 9 所述的发送装置, 其特征在于, 所述扰码 单元具体用于根据所述对应关系为每一路 OTL 信号选择相应的扰码 生成多项式进行扰码处理。
11、 根据权利要求 9或 10所述的发送装置, 其特征在于, 所述 对应关系管理单元, 还用于将所述对应关系发送给网络管理器或者所 述接收装置。
12、 一种接收装置, 其特征在于, 包括:
第一获取单元,用于获取 n路 OTL光通道传输支路信号,其中 , 所述 n路 OTL信号是由一路 OTUCn 光通道传输单元信号分发而成 的, n大于等于 2 ;
解扰码单元, 用于基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分别进行解扰码处理; 其中, 所述 n个非相关的扰码生 成多项式为 n个无公共因子的扰码生成多项式;
重组单元, 用于将所述解扰码单元解扰码后的 n路 OTL信号重 组为一路所述 OTUCn信号。
13、 根据权利要求 12所述的接收装置, 其特征在于, 所述接收 装置还包括:
第二获取单元, 用于根据 OTL信号数 n获取 n个非相关的扰码 生成多项式。
14、 根据权利要求 13所述的接收装置, 其特征在于:
所述第二获取单元具体用于: 根据所述 OTL信号数 n从预配置 的扰码生成多项式库中获取 n个非相关的扰码生成多项式; 其中所述 扰码生成多项式库中存储至少 n个非相关的扰码生成多项式。
15、 根据权利要求 13所述的接收装置, 其特征在于:
所述第二获取单元具体用于: 确定扰码生成多项式的最高阶数; 确定小于所述扰码生成多项式的最高阶数的所有质数;根据所述 OTL 信号数 n, 生成 n个非相关的扰码生成多项式, 其中, 每个扰码生成 多项式中除最高阶数的项和常数项以外的所有项的阶数均是所述所 有质数中的数, 且任意两个多项式均不相同。
16、 根据权利要求 12至 15 所述的接收装置, 其特征在于, 所 述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成多项式 为 (x) = l + + , 所述 X是扰码生成多项式中除最高阶单项式和常数 项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确定; 其 中所述 b 是预配置或通过网络管理器下发至所述接收装置的多项式 的最高阶数, 所述 b为自然数。
1 7、 根据权利要求 12至 1 6任一项所述的接收装置, 其特征在 于:
所述第一获取单元具体用于: 将接收到的 m路支路复用信号进 行解复用, 恢复出 c*n路逻辑通道, 并将所述 c*n路逻辑通道恢复为 n路 OTL信号; 或者, 将接收到的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
1 8、 根据权利要求 12至 1 7任一项所述的接收装置, 其特征在 于, 所述接收装置还包括:
第三获取单元, 用于获取每路 OTL信号的支路编号, 及每个扰 码生成多项式的多项式编号;
查找单元, 用于根据所述每路 OTL信号的支路编号与所述每个 扰码生成多项式的多项式编号, 查找每路 OTL 信号对应的扰码生成 多项式。
1 9、 根据权利要求 12至 1 8任一项所述的接收装置, 其特征在 于, 所述接收装置还包括:
对应关系管理单元, 用于存储所述 n路 OTL信号与所述 n个非 相关的扰码生成多项式的对应关系, 或者用于从网络管理器或者发送 所述 OTUCn信号的发送装置获取所述 n路 OTL信号与所述 n个非相 关的扰码生成多项式的对应关系,所述对应关系描述了在对每路 OTL 信号进行扰码处理时所釆用的扰码生成多项式;
相应地, 所述解扰码单元具体用于根据所述对应关系为每一路 OTL信号选择相应的扰码生成多项式进行解扰码处理。
20、 一种光传送网中信号传输的方法, 其特征在于, 包括: 接收 OTUCn光通道传输单元信号, 并将所述 OTUCn信号分发 为 n路 OTL光通道传输支路信号, 所述 n为大于等于 2的整数; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分别 进行扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个无公 共因子的扰码生成多项式;
将扰码后的 OTL信号通过子载波传送至接收装置。
21、根据权利要求 20所述的方法,其特征在于,所述接收 OTUCn 光通道传输单元信号, 并将所述 OTUCn信号分发为 n路 OTL光通道 传输支路信号之后, 还包括:
根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
22、 根据权利要求 21所述的方法, 其特征在于, 所述根据 OTL 信号数 n获取 n个非相关的扰码生成多项式具体包括:
根据所述 OTL信号数 n从预配置的扰码生成多项式库中获取 n 个非相关的扰码生成多项式; 其中, 所述扰码生成多项式库中存储至 少 n个非相关的 ·ί尤码生成多项式。
23、 根据权利要求 21所述的方法, 其特征在于, 所述根据 OTL 信号数 η获取 η个非相关的扰码生成多项式具体包括:
确定扰码生成多项式的最高阶数;
确定小于所述扰码生成多项式的最高阶数的所有质数;
根据所述 OTL信号数 η , 生成 η个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶数的项和常数项以外的所有项 的阶数均是所述所有质数中的数, 且任意两个多项式均不相同。
24、 根据权利要求 21 至 23任一项所述的方法, 其特征在于, 所述 η路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成多项 式为 (x) = l + ; + , 所述 X是扰码生成多项式中除最高阶单项式和常 数项以外的项, 是根据所述 OTL信号所对应的支路编号 r 来确定; 其中所述 b 是预配置或通过网络管理器下发至所述发送装置的多项 式的最高阶数, 所述 b为自然数。
25、 根据权利要求 21 至 24任一项所述的方法, 其特征在于, 所述将扰码后的 OTL信号通过子载波传送至接收装置具体包括: 将每路扰码后的 OTL信号拆分为 c路逻辑通道, 共得 c*n路逻 辑通道; 其中, 所述 c为 自然数;
将所述 c*n路逻辑通道复用为 m路支路复用信号;
将所述 m路支路复用信号通过子载波传送至所述接收装置。
26、 根据权利要求 25所述的方法, 其特征在于, 所述 m路支路 复用信号中至少有一路是由至少两路逻辑通道复用得到的; 其中, 所 述两路逻辑通道不是由同一路扰码后的 OTL 信号拆分而成的逻辑通 道。
27、 根据权利要求 21 至 24任一项所述的方法, 其特征在于, 所述将扰码后的 OTL信号通过子载波传送至接收装置具体包括: 将 n路扰码后的 OTL信号复用为 m路支路复用信号;
将所述 m路支路复用信号通过子载波传送至所述接收装置。
28、 根据权利要求 21 至 27任一项所述的方法, 其特征在于, 所述方法还包括:
存储所述 n路 OTL信号与所述 n个非相关的扰码生成多项式的 对应关系; 或者生成所述 n路 OTL信号与所述 n个非相关的扰码生 成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号与 所述 n个非相关的扰码生成多项式的对应关系;
其中 , 所述对应关系描述了在对每路 OTL信号进行扰码时所述 每路 OTL信号所釆用的扰码生成多项式。
29、 根据权利要求 28所述的方法, 其特征在于, 所述基于 n个 非相关的扰码生成多项式中每个扰码生成多项式, 对所述 n 路 OTL 信号分别进行扰码处理具体包括:
根据所述对应关系为每一路 OTL信号选择相应的扰码生成多项 式进行扰码处理。
30、 一种光传送网中信号传输的方法, 其特征在于, 包括: 获取 n路 OTL光通道传输支路信号, 其中, 所述 n路 OTL信号 是由一路 OTUCn光通道传输单元信号分发而成的, n大于等于 2; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分别 进行解扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个无 公共因子的扰码生成多项式;
将解扰码后的 n路 OTL信号重组为一路 OTUCn光通道传输单 元信号。
3 1、 根据权利要求 30所述的方法, 其特征在于, 所述获取 OTL 光通道传输支路信号之后, 还包括:
根据 OTL信号数 n获取 n个非相关的扰码生成多项式。
32、 根据权利要求 3 1所述的方法, 其特征在于, 所述根据 OTL 信号数 n获取 n个非相关的扰码生成多项式具体包括:
根据所述 OTL信号数 n从预配置的扰码生成多项式库中获取 n 个非相关的扰码生成多项式; 其中所述扰码生成多项式库中存储至少 n个非相关的扰码生成多项式。
33、 根据权利要求 31 所述的方法, 其特征在于所述根据 OTL 信号数 n获取 n个非相关的扰码生成多项式具体包括:
确定扰码生成多项式的最高阶数;
确定小于所述扰码生成多项式的最高阶数的所有质数;
根据所述 OTL信号数 n, 生成 n个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶数的项和常数项以外的 所有项的阶数均是所述所有质数中的数, 且任意两个多项式均不相 同。
34、 根据权利要求 30或 33 所述的方法, 其特征在于, 所述 n 路 OTL 信号中支路编号为 r 的 OTL 信号对应的扰码生成多项式为 Gr{x) = \ + X + xb , 所述 X是扰码生成多项式中除最高阶单项式和常数项 以外的项, 是根据所述 OTL信号所对应的支路编号 r来确定; 其中 所述 b 是预配置或通过网络管理器下发至所述接收装置的多项式的 最高阶数, 所述 b为 自然数。
35、 根据权利要求 30至 34任一项所述的方法, 其特征在于, 所述获取 n路 OTL光通道传输支路信号具体包括:
将接收到的 m路支路复用信号进行解复用, 恢复出 c*n路逻辑 通道, 并将所述 c*n路逻辑通道恢复为 n路 OTL信号; 或者, 将接 收到的 m路支路复用信号进行解复用, 恢复为 n路 OTL信号。
36、 根据权利要求 30至 35任一项所述的方法, 其特征在于, 所述所述获取 OTL光通道传输支路信号之后, 还包括:
获取每路 OTL信号的支路编号, 及每个扰码生成多项式的多项 式编号;
根据所述每路 OTL信号的支路编号与所述每个扰码生成多项式 的多项式编号, 查找每路 OTL信号对应的扰码生成多项式。
37、 根据权利要求 30至 36任一项所述的方法, 其特征在于, 所述方法还包括:
存储所述 n路 OTL信号与所述 n个非相关的扰码生成多项式的 对应关系; 或者生成所述 n路 OTL信号与所述 n个非相关的扰码生 成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号与 所述 n个非相关的扰码生成多项式的对应关系;
其中 , 所述对应关系描述了在对每路 OTL信号进行扰码时所述 每路 OTL信号所釆用的扰码生成多项式。
38、 一种发送设备, 其特征在于, 包括:
通信单元, 用于与外部设备通信;
处理器用于:
接收 OTUCn光通道传输单元信号, 并将所述 OTUCn信号分发 为 n路 OTL光通道传输支路信号, 所述 n为大于等于 2的整数; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分别 进行扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个无公 共因子的扰码生成多项式;
将扰码后的 OTL信号通过子载波传送至接收装置。
39、 根据权利要求 38所述的发送设备, 其特征在于:
所述处理器, 还用于根据 OTL信号数 n获取 n个非相关的扰码 生成多项式。
40、 根据权利要求 39所述的发送设备, 其特征在于: 所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多项 式具体用于: 根据所述 OTL信号数 n从预配置的扰码生成多项式库 中获取 n个非相关的扰码生成多项式; 其中, 所述扰码生成多项式库 中存储至少 n个非相关的扰码生成多项式。
41、 根据权利要求 39所述的发送设备, 其特征在于:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多项 式具体用于: 确定扰码生成多项式的最高阶数; 确定小于所述扰码生 成多项式的最高阶数的所有质数; 根据所述 OTL 信号数 n , 生成 n 个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶 数的项和常数项以外的所有项的阶数均是所述所有质数中的数, 且任 意两个多项式均不相同。
42、 根据权利要求 38至 41 任一项所述的发送设备, 其特征在 于, 所述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成 多项式为 (χ) = 1 + + χέ , 所述 X是扰码生成多项式中除最高阶单项式 和常数项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确 定; 其中所述 b是预配置或通过网络管理器下发至所述发送装置的多 项式的最高阶数, 所述 b为 自然数。
43、 根据权利要求 38至 42任一项所述的发送设备, 其特征在 于:
所述处理器将扰码后的 OTL信号通过子载波传送至接收装置具 体用于: 将每路扰码后的 OTL信号拆分为 c 路逻辑通道, 共得 c*n 路逻辑通道; 其中, 所述 c为自然数; 将所述 c*n路逻辑通道复用为 m路支路复用信号;将所述 m路支路复用信号通过子载波传送至所述 接收装置。
44、 根据权利要求 43所述的发送设备, 其特征在于, 所述 m路 支路复用信号中的每路支路复用信号是由至少两路逻辑通道复用得 到的; 其中, 所述两路逻辑通道不是由同一路扰码后的 OTL 信号拆 分而成的逻辑通道。
45、 根据权利要求 38至 41 任一项所述的发送设备, 其特征在 于:
所述处理器将扰码后的 OTL信号通过子载波传送至接收装置具 体用于: 将 n路扰码后的 OTL信号复用为 m路支路复用信号; 将所 述 m路支路复用信号通过子载波传送至所述接收装置。
46、 根据权利要求 38至 45任一项所述的发送设备, 其特征在 于:
所述处理器, 还用于存储所述 n路 OTL信号与所述 n个非相关 的扰码生成多项式的对应关系;或者生成所述 n路 OTL信号与所述 n 个非相关的扰码生成多项式的对应关系; 或者从网络管理器获得所述 n路 OTL信号与所述 n个非相关的扰码生成多项式的对应关系;
其中 , 所述对应关系描述了在对每路 OTL信号进行扰码时所述 每路 OTL信号所釆用的扰码生成多项式。
47、 根据权利要求 46所述的发送设备, 其特征在于, 所述处理 器基于 n个非相关的扰码生成多项式中每个扰码生成多项式, 对所述 n路 OTL信号分别进行扰码处理具体用于:根据所述对应关系为每一 路 OTL信号选择相应的扰码生成多项式进行扰码处理。
48、 一种接收设备, 其特征在于, 包括:
通信单元, 用于与外部设备通信;
处理器用于:
获取 n路 OTL光通道传输支路信号, 其中, 所述 n路 OTL信号 是由一路 OTUCn光通道传输单元信号分发而成的, n大于等于 2; 基于 n个非相关的扰码生成多项式, 对所述 n路 OTL信号分别 进行解扰码处理; 其中, 所述 n个非相关的扰码生成多项式为 n个无 公共因子的扰码生成多项式;
将解扰码后的 n路 OTL信号重组为一路 OTUCn光通道传输单 元信号。
49、 根据权利要求 48所述的接收设备, 其特征在于:
所述处理器, 还用于根据 OTL信号数 n获取 n个非相关的扰码 生成多项式。
50、 根据权利要求 49所述的接收设备, 其特征在于: 所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多项 式具体用于: 根据所述 OTL信号数 n从预配置的扰码生成多项式库 中获取 n个非相关的扰码生成多项式; 其中所述扰码生成多项式库中 存储至少 n个非相关的扰码生成多项式。
5 1、 根据权利要求 49所述的接收设备, 其特征在于:
所述处理器根据 OTL信号数 n获取 n个非相关的扰码生成多项 式具体用于: 确定扰码生成多项式的最高阶数; 确定小于所述扰码生 成多项式的最高阶数的所有质数; 根据所述 OTL 信号数 n , 生成 n 个非相关的扰码生成多项式; 其中, 每个扰码生成多项式中除最高阶 数的项和常数项以外的所有项的阶数均是所述所有质数中的数, 且任 意两个多项式均不相同。
52、 根据权利要求 48或 5 1 所述的接收设备, 其特征在于, 所 述 n路 OTL信号中支路编号为 r的 OTL信号对应的扰码生成多项式 为 (χ) = 1 + + χέ , 所述 X是扰码生成多项式中除最高阶单项式和常数 项以外的项, 是根据所述 OTL信号所对应的支路编号 r来确定; 其 中所述 b 是预配置或通过网络管理器下发至所述接收装置的多项式 的最高阶数, 所述 b为自然数, 所述 r在 1到 n的整数中取值。
53、 根据权利要求 48至 52任一项所述的接收设备, 其特征在 于:
所述处理器获取 n路 OTL光通道传输支路信号具体用于: 将接 收到的 m路支路复用信号进行解复用, 恢复出 c*n路逻辑通道, 并将 所述 c*n路逻辑通道恢复为 n路 OTL信号; 或者, 将接收到的 m路 支路复用信号进行解复用, 恢复为 n路 OTL信号。
54、 根据权利要求 48至 53任一项所述的接收设备, 其特征在 于:
所述处理器, 还用于获取每路 OTL信号的支路编号, 及每个扰 码生成多项式的多项式编号; 根据所述每路 OTLOTL 信号的支路编 号与所述每个扰码生成多项式的多项式编号, 查找每路 OTL 信号对 应的 ·ί尤码生成多项式。
55、 根据权利要求 48至 54所述的接收设备, 其特征在于, 所 述处理器, 还用于存储所述 η路 OTL信号与所述 η个非相关的扰码 生成多项式的对应关系; 或者生成所述 η路 OTL信号与所述 η个非 相关的扰码生成多项式的对应关系; 或者从网络管理器获得所述 η路 OTL信号与所述 η个非相关的扰码生成多项式的对应关系;
其中 , 所述对应关系描述了在对每路 OTL信号进行扰码时所述 每路 OTL信号所釆用的扰码生成多项式。
56、 一种光传送网中信号传输系统, 其特征在于, 包括: 发送 装置和接收装置, 其中, 所述发送装置为权利要求 1 至 1 1 任一项所 述的发送装置, 所述接收装置为权利要求 12至 19任一项所述的接收 装置。
57、 一种光传送网中信号传输系统, 其特征在于, 包括: 发送 设备和接收设备, 其中, 所述发送设备为权利要求 38至 47任一项所 述的发送设备, 所述接收设备为权利要求 48至 55任一项所述的接收 设备。
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