WO2024066414A1 - 业务传输方法、设备、介质 - Google Patents

业务传输方法、设备、介质 Download PDF

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Publication number
WO2024066414A1
WO2024066414A1 PCT/CN2023/096291 CN2023096291W WO2024066414A1 WO 2024066414 A1 WO2024066414 A1 WO 2024066414A1 CN 2023096291 W CN2023096291 W CN 2023096291W WO 2024066414 A1 WO2024066414 A1 WO 2024066414A1
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Prior art keywords
service
service layer
optical
unit
transmission method
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PCT/CN2023/096291
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English (en)
French (fr)
Inventor
张源斌
苑岩
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中兴通讯股份有限公司
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Publication of WO2024066414A1 publication Critical patent/WO2024066414A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-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

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a service transmission method, an electronic device and a computer-readable medium.
  • the method of loading multiple service signals into the payload of the optical transport network signal is to divide the payload of the optical transport network signal into n time slots (TS), as shown in Figure 1. Then the service signal is loaded into one or more time slots in the payload of the optical transport network signal, and the time slot is implemented in a byte interleaving manner.
  • TS time slots
  • Both the Synchronous Transfer Module-1 (STM-1, i.e., a synchronous transmission module with a rate of 155.520Mbps) and the Optical Data Unit (ODU) use three 0xF6 and three 0x28 as frame header indication signals.
  • STM-1 Synchronous Transfer Module-1
  • ODU Optical Data Unit
  • the STM-1 service can be mapped to ODU0 through the Generic Mapping Procedure (GMP), and ODU0 is then multiplexed into the higher-order ODU.
  • GMP Generic Mapping Procedure
  • OTUC optical transmission unit
  • OSUs optical service units
  • time slot length is at least 16 bytes, which is greater than the 6-byte frame header indication signal.
  • CBR constant bit rate
  • PTT packet
  • the embodiments of the present disclosure provide a service transmission method, an electronic device and a computer-readable medium.
  • a service transmission method comprising: mapping a customer service into an optical service unit; mapping the optical service unit into a service layer optical data unit; processing the service layer optical data unit according to a first preset rule to obtain data to be transmitted; and sending the data to be transmitted.
  • the payload area of the service layer optical data unit is divided into a fixed number of time slots, and the time slots adopt an interleaving granularity of N bytes, where N is a positive integer greater than 1.
  • the payload area of the service layer optical data unit is processed according to the first preset rule.
  • processing the payload area of the service layer optical data unit according to the first preset rule includes: scrambling the payload area of the service layer optical data unit according to a predetermined generating polynomial.
  • the processing of the payload area of the service layer optical data unit according to the first preset rule includes: bit-by-bit inversion of the payload area of the service layer optical data unit.
  • a service transmission method including: mapping customer services into optical service units; processing the optical service units according to a second preset rule; mapping the optical service units processed by the second preset rule into service layer optical data units to obtain data to be transmitted; and sending the data to be transmitted.
  • the payload area of the optical service unit or an area in the optical service unit except a frame header framing signal is processed according to the second preset rule.
  • the processing of the payload area of the optical service unit or the area of the optical service unit except the frame header framing signal according to the second preset rule includes: The payload area of the optical service unit or the area in the optical service unit except the frame header framing signal is scrambled according to a predetermined generating polynomial.
  • the service layer optical data unit is divided into a fixed number of time slots, and the time slots adopt an interleaving granularity of N bytes, where N is a positive integer greater than 1.
  • an electronic device comprising: one or more processors; and a memory on which one or more programs are stored, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the service transmission method described in the first aspect or the second aspect of the present disclosure.
  • a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, the service transmission method described in the first aspect or the second aspect of the present disclosure is implemented.
  • the customer service is mapped to the OSU, the OSU mapping is multiplexed into the service layer ODU, and then the service layer ODU is processed according to the first preset rule.
  • the OSU before mapping the OSU to the service layer ODU, the OSU is first processed according to the second rule, and then mapped to the service layer ODU after the processing is completed.
  • the service transmission method provided in the second aspect also does not need to add the service frame header indication signal of the OSU to the service layer ODU, thereby avoiding the impact on the framing of the service layer ODU, reducing the time required for the framing of the service layer ODU, and avoiding other problems caused by the excessively long ODU framing time.
  • FIG1 is a schematic diagram of an implementation method of dividing an OTN frame into time slots
  • FIG2 is a schematic diagram of another implementation of dividing an OTN frame into time slots
  • FIG3 is a flow chart of an implementation of the service transmission method provided by the first aspect of the present disclosure.
  • FIG. 4 is an implementation of the service transmission method provided by the second aspect of the present disclosure. Flow chart of the formula
  • FIG5 is a flow chart of an implementation of a service transmission method for an intermediate node provided by the present disclosure
  • FIG6 is a schematic diagram of an embodiment of an electronic device provided by the present disclosure.
  • FIG7 is a schematic diagram of a computer-readable medium provided by the present disclosure.
  • FIG8 is a schematic diagram of application scenarios of Embodiments 1 and 2 of the present disclosure.
  • FIG9 is a schematic diagram of scrambling of the service layer ODU4 carrying the OSU.
  • FIG10 is a schematic diagram of bitwise inversion of the service layer ODU4 carrying the OSU;
  • FIG11 is a schematic diagram of OSU scrambling.
  • STM-1 service is a relatively important service. Since the ODU carrying OSU adopts a time slot interleaving mechanism greater than 6 bytes, the STM-1 frame header indication signal in the OSU exists continuously in the service layer ODU. For the service layer ODU, it can support up to k levels of OSU, which means that there are hundreds of STM-1 frame header indication signals in the payload area of the ODU. Such a huge number will cause the service layer ODU framing time to be too long or other problems.
  • a service transmission method is provided, as shown in FIG3 , the transmission method comprising:
  • step S110 the customer service is mapped into the optical service unit
  • step S120 the optical service unit is mapped into a service layer optical data unit
  • step S130 the service layer optical data unit is processed according to a first preset rule to obtain data to be transmitted;
  • step S140 the data to be transmitted is sent.
  • the customer service is mapped to the OSU, the OSU is mapped and multiplexed into the service layer ODU, and then the service layer ODU is processed according to the first preset rule.
  • the transmission method provided in the first aspect of the present disclosure is used for the source node.
  • the payload area of the service layer optical data unit is divided into a fixed number of time slots, and the time slots adopt an interleaving granularity of N bytes, where N is a positive integer greater than 1.
  • the payload area of the service layer optical data unit is processed according to the first preset rule.
  • the service layer ODU By processing the payload area of the service layer ODU, the service layer ODU net The pattern style of the frame header indication signal in the payload area is different from the frame header indication signal of the service layer ODU, so as to avoid affecting the framing of the service layer ODU, wherein the pattern style of the frame header indication signal is the value of the frame header indication signal. Since only the payload area of the service layer ODU is processed, the intermediate node does not need to perform the reverse operation of the first preset rule on the service layer ODU, and can perform non-intrusive monitoring and sorting scheduling on the service layer ODU.
  • the first preset rule is not particularly limited.
  • the processing of the payload area of the service layer optical data unit according to the first preset rule specifically includes: scrambling the payload area of the service layer optical data unit according to a predetermined generating polynomial.
  • the distribution rule of 0 and 1 of the service layer ODU can be changed by scrambling, thereby changing the frame header pattern style of the service layer ODU.
  • the processing of the payload area of the service layer optical data unit according to the first preset rule specifically includes: bit-by-bit inversion of the payload area of the service layer optical data unit.
  • the inversion operation changes the frame header indication signal pattern in the payload area of the service layer ODU, making the frame header indication signals of other service layer ODUs different, thereby avoiding the influence on the framing of the service layer ODU.
  • a method for transmitting service data is provided, as shown in FIG4 , including:
  • step S210 the customer service is mapped into the optical service unit
  • step S220 the optical service unit is processed according to a second preset rule
  • step S230 the optical service unit processed by the second preset rule is mapped into the service layer optical data unit to obtain data to be transmitted;
  • step S240 the data to be transmitted is sent.
  • the transmission method provided in the second aspect of the present disclosure is also used in the source node.
  • the OSU before mapping the OSU to the service layer ODU, the OSU is first processed according to the second rule, and then mapped to the service layer ODU after the processing is completed.
  • the transmission method provided in the second aspect also does not need to add the service frame header indication signal of the OSU to the service layer ODU, thereby avoiding the impact on the framing of the service layer ODU and reducing the service layer ODU.
  • the time required for framing also avoids other problems caused by too long ODU framing time.
  • the payload area of the optical service unit or the area in the optical service unit except the frame header framing signal is processed according to the second preset rule.
  • the specific method of the second preset rule is not particularly limited.
  • the payload area of the optical service unit or the area in the optical service unit except the frame header framing signal is processed according to the second preset rule, specifically including: scrambling the payload area of the optical service unit or the area in the optical service unit except the frame header framing signal according to a predetermined generating polynomial.
  • the OSU can carry a frame header indication signal pattern style different from that of the service layer ODU, thereby avoiding affecting the framing of the service layer ODU.
  • the service layer optical data unit is divided into a fixed number of time slots, and the time slots adopt an interleaving granularity of N bytes, where N is a positive integer greater than 1.
  • the present disclosure may also provide a service transmission method, as shown in FIG5 , wherein the data transmission method includes:
  • step S310 data to be transmitted is received, where the data to be transmitted is the data to be transmitted generated by the method provided by the first aspect of the present disclosure or the second aspect of the present disclosure;
  • step S320 non-intrusive monitoring and scheduling are performed on the data to be transmitted to obtain final transmission data
  • step S330 the final transmission data is transmitted.
  • the data transmission method provided by the present disclosure is used for an intermediate node.
  • the intermediate node can perform non-intrusive monitoring and scheduling on the service layer ODU without performing the reverse operation of the first preset rule on the service layer ODU.
  • an electronic device as shown in FIG6 , and the electronic device includes: one or more processors 101; a memory 102 on which one or more programs are stored, and when the one or more programs are executed by the one or more processors, the one or more processors 101 implement the method provided by the first aspect of the present disclosure or the second aspect of the present disclosure.
  • the electronic device may further include one or more I/O interfaces 103 connected between the processor and the memory and configured to implement information interaction between the processor and the memory.
  • I/O interfaces 103 connected between the processor and the memory and configured to implement information interaction between the processor and the memory.
  • the processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU) and the like;
  • the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH);
  • the I/O interface (read-write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (Bus) and the like.
  • Buss data bus
  • the processor 101 , the memory 102 , and the I/O interface 103 are connected to each other via a bus 104 , and further connected to other components of the computing device.
  • a computer-readable medium is provided, on which a computer program is stored, and when the program is executed by a processor, the method provided by the first aspect of the present disclosure or the second aspect of the present disclosure is implemented.
  • the application scenario of the first embodiment is shown in FIG8 .
  • the source node and the sink node transmit 500 STM-1 services through a 100G link.
  • the source node maps 500 STM-1 services to 500 OSUs, and the STM-1 services and OSUs are one-to-one.
  • the 500 OSUs are multiplexed into the service layer ODU4, and the new payload type (PT, Payload Type) value 0x23 is used to indicate that the service layer ODU4 carries OSUs.
  • the service layer ODU4 payload area adopts a 16-byte time slot division method.
  • the service layer ODU4 is sent out through the Flexible Optical Transport Network OTN (FlexO, Flexible OTN) interface, in order to avoid the STM-1 frame header indication signal in the ODU4 payload area affecting the framing of the service layer ODU4, the service layer ODU4 payload area is scrambled according to a fixed generating polynomial, as shown in Figure 9, and then the service layer ODU4 is mapped to OTUC1 and sent out through the FlexO interface.
  • OTUC represents a fully standardized optical transmission unit.
  • the intermediate node demaps OTUC1 from the FlexO interface and then demaps OTUC1 from the OTUC1.
  • the service layer ODU4 is sent out through another FlexO interface after non-intrusive monitoring and corresponding sorting and scheduling of ODU4.
  • the sink node demaps OTUC1 from the FlexO interface, demaps the service layer ODU4 from OTUC1, confirms that the service layer ODU4 carries the OSU service based on the PT value, descrambles the service layer ODU4 payload area, demultiplexes 500 OSUs from the service layer ODU4, and then demaps the STM-1 service from the OSU.
  • the application scenario of the second embodiment is shown in FIG8 .
  • the source node and the sink node transmit 500 STM-1 services through a 100G link.
  • the source node maps 500 STM-1 services to 500 OSUs, and the STM-1 services and OSUs are one-to-one.
  • the 500 OSUs are multiplexed into the service layer ODU4, and the new PT value 0x23 is used to indicate that the service layer ODU4 carries OSUs.
  • the service layer ODU4 payload area adopts a 16-byte time slot division method.
  • the service layer ODU4 payload area is inverted bit by bit, as shown in Figure 10, and then the service layer ODU4 is mapped to OTUC1 and sent out through the FlexO interface.
  • the intermediate node demaps OTUC1 from the FlexO interface, and then demaps the service layer ODU4 from OTUC1. After non-intrusive monitoring and corresponding combing and scheduling of ODU4, it is sent out from another FlexO interface.
  • the sink node demaps OTUC1 from the FlexO interface, demaps the service layer ODU4 from OTUC1, confirms that the service layer ODU4 carries the OSU service based on the PT value, inverts the payload area of the service layer ODU4 bit by bit, demultiplexes 500 OSUs from the service layer ODU4, and then demaps the STM-1 service from the OSU.
  • the application scenario of the third embodiment is shown in FIG8 .
  • the source node and the sink node transmit 500 STM-1 services through a 100G link.
  • the source node maps 500 STM-1 services to 500 OSUs. There is a one-to-one correspondence between the service and the OSU, and the frame header indication signal of the OSU is different from the frame header indication signal of the service layer ODU.
  • the payload area of each OSU service is scrambled according to a fixed generating polynomial, as shown in Figure 11, and the scrambled OSU is multiplexed into the service layer ODU4.
  • the new PT value 0x23 is used to indicate that the service layer ODU4 carries OSU, and the service layer ODU4 payload area adopts a 16-byte time slot division method.
  • the service layer ODU4 is mapped to OTUC1 and then sent out through the FlexO interface.
  • the intermediate node demaps OTUC1 from the FlexO interface, demaps the service layer ODU4 from OTUC1, demultiplexes OSU from the service layer ODU4, performs non-intrusive monitoring on the OSU and corresponding combing and scheduling, and then sends it out from another FlexO interface.
  • the sink node demaps OTUC1 from the FlexO interface, demaps the service layer ODU4 from OTUC1, confirms based on the PT value that the service layer ODU4 carries the OSU service, demaps the OSU from the service layer ODU4, descrambles the payload area of the OSU, and then demaps the STM-1 service from the OSU.
  • Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium).
  • a computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data).
  • Computer storage media includes but is not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or can be used to store the desired information and can be accessed by the computer.
  • communication media generally contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery media.

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Abstract

本公开提供一种业务传输方法，包括：将客户业务映射到光业务单元中；将所述光业务单元映射至服务层光数据单元中；对所述服务层光数据单元按照第一预设规则进行处理，得到待传输数据；发送所述待传输数据。本公开还提供一种电子设备和一种计算机可读介质。

Description

业务传输方法、设备、介质 技术领域
本公开涉及通信技术领域，特别涉及一种业务传输方法、一种电子设备和一种计算机可读介质。
背景技术
在现有的光传送网(OTN，Optical Transport Network)的定义中，多个业务信号装到光传送网信号净荷中的方法是将光传送网信号净荷划分为n个时隙(TS，Time Slot)，如图1所示。然后将业务信号装入光传送网信号净荷中的一个或多个时隙中，时隙以字节间插的方式实现。
同步传递模块-1(STM-1，Synchronous Transfer Module-1，即，速率为155.520Mbps的同步传输模块)和光数据单元(ODU，Optical data unit)均使用3个0xF6和3个0x28作为帧头指示信号，STM-1业务可以通过通用映射规程(GMP，Generic Mapping Procedure)的方式映射到ODU0，ODU0再复用到高阶ODU中。对于ODU4及其以下的高阶ODU信号，其时隙是按照单字节进行间插的，ODU0净荷中的STM-1的帧头指示信号也会分散在高阶ODU中，出现连续存放的概率比较低。对于B100G OTN，使用了基于16字节的时隙间插的完全标准化光传输单元(OTUC，Completely standardized Optical Transport Unit-Cn)帧结构，尽管ODU0净荷中的STM-1的帧头指示信号会连续在OTUC净荷中出现，但一个OTUC最多承载10个ODU0信号，由于数量较少，对于OTUC定帧会产生一定影响。
业界一个研究热点是在使用光业务单元(OSU，Optical Service Unit)承载小颗粒业务，使用大字节时隙划分OTN帧净荷区，如图2所示，OSU映射到OTN帧的时隙中，且时隙长度至少为16字节，大于6个字节的帧头指示信号。在OSU上光口前需要承载在ODU中，且OSU的速率主要在1G以下，包括恒定比特率(CBR，Constant Bit Rate)业务和分组(PKT，Packet)业务两大类，一个ODU中可以承载k级 别个OSU。但是，在这种方式中，存在服务层ODU定帧时间过长或其他问题。
发明内容
本公开实施例提供一种业务传输方法、一种电子设备和一种计算机可读介质。
作为本公开的第一个方面，提供一种业务传输方法，包括：将客户业务映射到光业务单元中；将所述光业务单元映射至服务层光数据单元中；对所述服务层光数据单元按照第一预设规则进行处理，得到待传输数据；发送所述待传输数据。
可选地，所述服务层光数据单元的净荷区划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
可选地，在对所述服务层光数据单元按照第一预设规则进行处理的步骤中，按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理。
可选地，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，包括：根据预定的生成多项式对所述服务层光数据单元的净荷区进行加扰。
可选地，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，包括：对所述服务层光数据单元的净荷区进行逐比特按位取反。
作为本公开的第二个方面，提供一种业务传输方法，包括：将客户业务映射到光业务单元中；对所述光业务单元按照第二预设规则进行处理；将经过第二预设规则处理后的光业务单元映射至服务层光数据单元中，得到待传输数据；发送所述待传输数据。
可选地，在所述对所述光业务单元按照第二预设规则进行处理的步骤中，按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理。
可选地，所述按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理，包括：根 据预定的生成多项式对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行加扰。
可选地，所述服务层光数据单元划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
作为本公开的第三个方面，提供一种电子设备，包括：一个或多个处理器；存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现本公开第一个方面或第二个方面所述的业务传输方法。
作为本公开的第四个方面，提供一种计算机可读介质，其上存储有计算机程序，所述程序被处理器执行时实现本公开第一个方面或第二个方面所述的业务传输方法。
本公开第一个方面所提供给的业务传输方法中，客户业务映射到OSU中，将OSU映射复用到服务层ODU中，然后按照第一预设规则对服务层ODU进行处理，无需将OSU的业务帧头指示信号添加至服务层ODU中，从而可以避免对服务层ODU的定帧产生影响，降低了服务层ODU定帧所需要的时间，也避免了因ODU定帧时间过长所导致的其他问题。
本公开第二个方面所提供的方法中，将OSU映射至服务层ODU之前，先对OSU进行第二规则的处理，处理完毕后再映射至服务层ODU中。第二个方面所提供的业务传输方法，也无需将OSU的业务帧头指示信号添加至服务层ODU中，从而可以避免对服务层ODU的定帧产生影响，降低了服务层ODU定帧所需要的时间，也避免了因ODU定帧时间过长所导致的其他问题。
附图说明
图1是OTN帧划分为时隙的一种实施方式的示意图；
图2是OTN帧划分为时隙的另一种实施方式的示意图；
图3是本公开第一个方面所提供的业务传输方法的一种实施方式的流程图；
图4是本公开第二个方面所提供的业务传输方法的一种实施方 式的流程图；
图5是本公开所提供的用于中间节点的业务传输方法的一种实施方式的流程图；
图6是本公开所提供的电子设备的一种实施方式的示意图；
图7是本公开所提供的计算机可读介质的示意图；
图8是本公开实施例一和实施例二的应用场景示意图；
图9是承载OSU的服务层ODU4加扰示意图；
图10是承载OSU的服务层ODU4按位取反示意图；
图11是OSU加扰示意图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图对本公开提供的业务数据的传输方法、电子设备和计算机可读介质进行详细描述。
在下文中将参考附图更充分地描述示例实施例，但是所述示例实施例可以以不同形式来体现且不应当被解释为限于本文阐述的实施例。反之，提供这些实施例的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
在不冲突的情况下，本公开各实施例及实施例中的各特征可相互组合。
如本文所使用的，术语“和/或”包括一个或多个相关列举条目的任何和所有组合。
本文所使用的术语仅用于描述特定实施例，且不意欲限制本公开。如本文所使用的，单数形式“一个”和“该”也意欲包括复数形式，除非上下文另外清楚指出。还将理解的是，当本说明书中使用术语“包括”和/或“由……制成”时，指定存在所述特征、整体、步骤、操作、元件和/或组件，但不排除存在或添加一个或多个其它特征、整体、步骤、操作、元件、组件和/或其群组。
除非另外限定，否则本文所用的所有术语(包括技术和科学术语)的含义与本领域普通技术人员通常理解的含义相同。还将理解，诸如 那些在常用字典中限定的那些术语应当被解释为具有与其在相关技术以及本公开的背景下的含义一致的含义，且将不解释为具有理想化或过度形式上的含义，除非本文明确如此限定。
OSU承载的CBR业务中，STM-1业务是比较重要的一个业务，由于承载OSU的ODU采用大于6字节的时隙间插机制，OSU中的STM-1的帧头指示信号在服务层ODU中连续存在，对于服务层ODU来说，其最多可以支持k级别的OSU，也就意味着ODU的净荷区中有数百个STM-1的帧头指示信号，如此巨大的数量会导致服务层ODU定帧时间过长或其他问题。
有鉴于此，作为本公开的第一个方面，提供一种业务传输方法，如图3所示，所述传输方法包括：
在步骤S110中，将客户业务映射到光业务单元中；
在步骤S120中，将所述光业务单元映射至服务层光数据单元中；
在步骤S130中，对所述服务层光数据单元按照第一预设规则进行处理，得到待传输数据；
在步骤S140中，发送所述待传输数据。
客户业务映射到OSU中，将OSU映射复用到服务层ODU中，然后按照第一预设规则对服务层ODU进行处理，无需将OSU的业务帧头指示信号添加至服务层ODU中，从而可以避免对服务层ODU的定帧产生影响，降低了服务层ODU定帧所需要的时间，也避免了因ODU定帧时间过长所导致的其他问题。
需要指出的是，本公开第一个方面所提供的传输方法用于源节点。
作为一种可选实施方式，所述服务层光数据单元的净荷区划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
作为一种可选实施方式，在对所述服务层光数据单元按照第一预设规则进行处理的步骤中，按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理。
通过对服务层ODU的净荷区进行处理，可以改变服务层ODU净 荷区中的帧头指示信号的图案样式，使其与服务层ODU的帧头指示信号不同，从而可以避免对服务层ODU的定帧产生影响，其中，帧头指示信号的图案样式为帧头指示信号的取值。由于只对服务层ODU的净荷区进行了处理，中间节点无需对服务层ODU进行第一预设规则的逆操作，就可以对服务层ODU进行非介入监控以及梳理调度。
在本公开中，对第一预设规则也不做特殊的限定。作为一种可选实施方式，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，具体包括：根据预定的生成多项式对所述服务层光数据单元的净荷区进行加扰。
通过加扰的方式可以改变服务层ODU的0和1的分布规则，从而改变服务层ODU的帧头图案样式。
当然，本公开并与限于此。作为本公开的另一种可选实施方式，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，具体包括：对所述服务层光数据单元的净荷区进行逐比特按位取反。
在这种实施方式中，取反操作会改变服务层ODU净荷区中帧头指示信号图案样式，使其余服务层ODU的帧头指示信号不同，从而避免其对服务层ODU的定帧产生影响。
作为本公开的第二个方面，提供一种业务数据的传输方法，如图4所示，包括：
在步骤S210中，将客户业务映射到光业务单元中；
在步骤S220中，对所述光业务单元按照第二预设规则进行处理；
在步骤S230中，将经过第二预设规则处理后的光业务单元映射至服务层光数据单元中，得到待传输数据；
在步骤S240中，发送所述待传输数据。
本公开第二个方面所提供的传输方法也用于源节点。
在本公开中，将OSU映射至服务层ODU之前，先对OSU进行第二规则的处理，处理完毕后再映射至服务层ODU中。第二个方面所提供的传输方法，也无需将OSU的业务帧头指示信号添加至服务层ODU中，从而可以避免对服务层ODU的定帧产生影响，降低了服务层ODU 定帧所需要的时间，也避免了因ODU定帧时间过长所导致的其他问题。
在本公开中，在所述对所述光业务单元按照第二预设规则进行处理的步骤中，按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理。
在本公开中，对第二预设规则的具体方式也不做特殊的限定，作为一种可选实施方式，所述按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理，具体包括：根据预定的生成多项式对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行加扰。
通过对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行加扰，可以使得OSU携带与服务层ODU不同的帧头指示信号图案样式，从而可以避免对服务层ODU的定帧产生影响。
可选地，所述服务层光数据单元划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
本公开还可以提供一种业务传输方法，如图5所示，所述数据传输方法包括：
在步骤S310中，接收待传输数据，所述待传输数据为本公开第一个方面或本公开第二个方面所提供的方法生成的待传输数据；
在步骤S320中，对所述待传输数据进行非介入监控以及调度梳理，获得最终传输数据；
在步骤S330中，传输所述最终传输数据。
本公开所提供的数据传输方法用于中间节点。
如上文中所述，中间节点无需对服务层ODU进行第一预设规则的逆操作，就可以对服务层ODU进行非介入监控以及梳理调度。
作为本公开的第三个方面，提供一种电子设备，如图6所示，所述电子设备包括：一个或多个处理器101；存储器102，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器101实现本公开第一个方面或本公开第二个方面所提供的方法。
可选地，所述电子设备还可以包括一个或多个I/O接口103，连接在处理器与存储器之间，配置为实现处理器与存储器的信息交互。
其中，处理器101为具有数据处理能力的器件，其包括但不限于中央处理器(CPU)等；存储器102为具有数据存储能力的器件，其包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、闪存(FLASH)；I/O接口(读写接口)103连接在处理器101与存储器102间，能实现处理器101与存储器102的信息交互，其包括但不限于数据总线(Bus)等。
在一些实施例中，处理器101、存储器102和I/O接口103通过总线104相互连接，进而与计算设备的其它组件连接。
作为本公开的第四个方面，如图7所示，提供一种计算机可读介质，其上存储有计算机程序，所述程序被处理器执行时实现本公开第一个方面或本公开第二个方面所提供的方法。
实施例
实施例一
本实施例一的应用场景如图8所示，源节点和宿节点通过100G的链路传递500条STM-1业务。
源节点将500条STM-1业务分别映射到500个OSU中，STM-1业务和OSU是一一对应的。500条OSU复用到服务层ODU4中，使用新的净荷类型(PT，Payload Type)值0x23表示该服务层ODU4承载的是OSU，服务层ODU4净荷区采用16字节的时隙划分方式。
由于服务层ODU4是通过灵活光传送网OTN(FlexO，Flexible OTN)接口发送出去的，为了避免ODU4净荷区中STM-1的帧头指示信号对服务层ODU4的定帧产生影响，根据固定的生成多项式对服务层ODU4净荷区进行加扰，如图9所示，然后将服务层ODU4映射到OTUC1，再通过FlexO接口发送出去。其中，OTUC表示完全标准化光传输单元。
中间节点从FlexO接口中解映射出OTUC1，再从OTUC1中解映射 出服务层ODU4，对ODU4进行非介入监控以及对应的梳理调度后，从另一个FlexO接口发送出去。
宿节点从FlexO接口中解映射得到OTUC1，从OTUC1中解映射得到服务层ODU4，根据PT值，确认该服务层ODU4中承载了OSU业务，对服务层ODU4净荷区进行解扰操作，然后从服务层ODU4中解复用出500条OSU，然后从OSU中解映射出STM-1业务。
实施例二
本实施例二的应用场景如图8所示，源节点和宿节点通过100G的链路传递500条STM-1业务。
源节点将500条STM-1业务分别映射到500个OSU中，STM-1业务和OSU是一一对应的。500条OSU复用到服务层ODU4中，使用新的PT值0x23表示该服务层ODU4承载的是OSU，服务层ODU4净荷区采用16字节的时隙划分方式。
由于服务层ODU4是通过FlexO接口发送出去的，为了避免ODU4净荷区中STM-1的帧头指示信号对服务层ODU4的定帧产生影响，对服务层ODU4净荷区逐比特按位取反，如图10所示，然后将服务层ODU4映射到OTUC1，再通过FlexO接口发送出去。
中间节点从FlexO接口中解映射出OTUC1，再从OTUC1中解映射出服务层ODU4，对ODU4进行非介入监控以及对应的梳理调度后，从另一个FlexO接口发送出去。
宿节点从FlexO接口中解映射得到OTUC1，从OTUC1中解映射得到服务层ODU4，根据PT值，确认该服务层ODU4中承载了OSU业务，对服务层ODU4净荷区逐比特按位进行取反，然后从服务层ODU4中解复用出500条OSU，然后从OSU中解映射出STM-1业务。
实施例三
本实施例三的应用场景如图8所示，源节点和宿节点通过100G的链路传递500条STM-1业务。
源节点将500条STM-1业务分别映射到500个OSU中，STM-1 业务和OSU是一一对应的，所述OSU的帧头指示信号采用与服务层ODU的帧头指示信号不同。
按照固定的生成多项式对每条OSU业务的净荷区进行加扰操作，如图11所示，将加扰后的OSU复用到服务层ODU4中，使用新的PT值0x23表示该服务层ODU4承载的是OSU，服务层ODU4净荷区采用16字节的时隙划分方式。将服务层ODU4映射到OTUC1，再通过FlexO接口发送出去。
中间节点从FlexO接口中解映射出OTUC1，再从OTUC1中解映射出服务层ODU4，从服务层ODU4中解复用出OSU，对OSU进行非介入监控以及对应的梳理调度后，从另一个FlexO接口发送出去。
宿节点从FlexO接口中解映射得到OTUC1，从OTUC1中解映射得到服务层ODU4，根据PT值，确认该服务层ODU4中承载了OSU业务，从服务层ODU4解映射出OSU，对OSU的净荷区进行解扰操作，然后从OSU中解映射出STM-1业务。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其它存储器技术、CD-ROM、数字多功能盘(DVD)或其它光盘存储、磁盒、磁带、磁盘存储或其它磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问 的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
本文已经公开了示例实施例，并且虽然采用了具体术语，但它们仅用于并仅应当被解释为一般说明性含义，并且不用于限制的目的。在一些实例中，对本领域技术人员显而易见的是，除非另外明确指出，否则可单独使用与特定实施例相结合描述的特征、特性和/或元素，或可与其它实施例相结合描述的特征、特性和/或元件组合使用。因此，本领域技术人员将理解，在不脱离由所附的权利要求阐明的本公开的范围的情况下，可进行各种形式和细节上的改变。

Claims (11)

  1. 一种业务传输方法，包括：
    将客户业务映射到光业务单元中；
    将所述光业务单元映射至服务层光数据单元中；
    对所述服务层光数据单元按照第一预设规则进行处理，得到待传输数据；
    发送所述待传输数据。
  2. 根据权利要求1所述的业务传输方法，其中，所述服务层光数据单元的净荷区划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
  3. 根据权利要求1或2所述的业务传输方法，其中，在对所述服务层光数据单元按照第一预设规则进行处理的步骤中，按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理。
  4. 根据权利要求3所述的业务传输方法，其中，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，包括：
    根据预定的生成多项式对所述服务层光数据单元的净荷区进行加扰。
  5. 根据权利要求3所述的业务传输方法，其中，所述按照所述第一预设规则对所述服务层光数据单元的净荷区进行处理，包括：
    对所述服务层光数据单元的净荷区进行逐比特按位取反。
  6. 一种业务传输方法，包括：
    将客户业务映射到光业务单元中；
    对所述光业务单元按照第二预设规则进行处理；
    将经过第二预设规则处理后的光业务单元映射至服务层光数据 单元中，得到待传输数据；
    发送所述待传输数据。
  7. 根据权利要求6所述的业务传输方法，其中，在所述对所述光业务单元按照第二预设规则进行处理的步骤中，按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理。
  8. 根据权利要求7所述的业务传输方法，其中，所述按照第二预设规则对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行处理，包括：
    根据预定的生成多项式对所述光业务单元的净荷区或者所述光业务单元中除帧头定帧信号之外的区域进行加扰。
  9. 根据权利要求6至8中任意一项所述的业务传输方法，其中，所述服务层光数据单元划分为固定数量的时隙，所述时隙采用N字节的交织粒度，所述N为大于1的正整数。
  10. 一种电子设备，包括：
    一个或多个处理器；
    存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现权利要求1至9中任意一项所述的业务传输方法。
  11. 一种计算机可读介质，其上存储有计算机程序，所述程序被处理器执行时实现根据权利要求1至9中任意一项所述的业务传输方法。
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