WO2021190000A1 - 光传送网中业务处理方法、处理装置和电子设备 - Google Patents

光传送网中业务处理方法、处理装置和电子设备 Download PDF

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Publication number
WO2021190000A1
WO2021190000A1 PCT/CN2020/138122 CN2020138122W WO2021190000A1 WO 2021190000 A1 WO2021190000 A1 WO 2021190000A1 CN 2020138122 W CN2020138122 W CN 2020138122W WO 2021190000 A1 WO2021190000 A1 WO 2021190000A1
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payload
transport network
optical transport
network frame
payload block
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PCT/CN2020/138122
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English (en)
French (fr)
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张源斌
苑岩
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中兴通讯股份有限公司
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Priority to EP20926656.8A priority Critical patent/EP4131806A4/en
Priority to JP2022558576A priority patent/JP2023519923A/ja
Priority to US17/912,594 priority patent/US20230129829A1/en
Publication of WO2021190000A1 publication Critical patent/WO2021190000A1/zh

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    • 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
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1652—Optical Transport Network [OTN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation

Definitions

  • the embodiments of the present disclosure relate to the field of optical communication technology, and in particular to a service processing method, processing device, electronic device, and computer-readable medium in an optical transport network.
  • the method of loading multiple service signals into the payload of the optical transport network signal is as follows: First, the area of the optical transport network signal is divided into n Time slot, the time slot is realized by byte interleaving; then, the service signal is loaded into one or more time slots in the signal payload of the optical transport network.
  • the minimum time slot granularity of the existing OTN technology is 1.25Gbps; when carrying services with a bandwidth lower than 1.25Gbps, such as Fast Ethernet (FE) services, synchronization Transmission module-1 (Synchronous Transfer Module-1, referred to as STM-1) business, E1 business and other small bandwidth services, the bandwidth waste of the optical transport network is very serious, for example, the E1 signal bandwidth is 2.048Mbps, when the bandwidth is installed to 1.25Gbps In the gap, the bandwidth waste is as high as 99% or more. Therefore, a transmission technology is needed to implement a method for carrying small-particle services efficiently in OTN.
  • FE Fast Ethernet
  • STM-1 Synchronous Transfer Module-1
  • the embodiments of the present disclosure provide a service processing method, processing device and electronic equipment in an optical transport network.
  • the embodiments of the present disclosure provide a service processing method in an optical transport network, which includes:
  • the payload area of the optical transport network frame is composed of payload blocks, and the payload block is used to carry the service container;
  • the embodiments of the present disclosure provide a service processing method in an optical transport network, which includes:
  • the service container is mapped to an optical transport network frame.
  • the payload area of the optical transport network frame is composed of payload blocks.
  • the payload block is used to carry the service container, and N consecutive payload blocks are used as a net Load block group, N payload blocks located in the same payload block group carry the same service container;
  • the indication information of the payload block group is carried in the overhead area of the optical transport network frame.
  • the embodiments of the present disclosure also provide a service processing device in an optical transport network, which includes:
  • the first mapping module is set to map the customer business to the business container
  • a second mapping module configured to map the service container to an optical transport network frame, the payload area of the optical transport network frame is composed of payload blocks, and the payload block is used to carry the service container;
  • the bearer module is configured to bear the indication information of the payload block in the overhead area of the optical transport network frame.
  • the embodiments of the present disclosure also provide a service processing device in an optical transport network, which includes:
  • the first mapping module is set to map the customer business to the business container
  • the second mapping module is configured to map the service container to an optical transport network frame, the payload area of the optical transport network frame is composed of payload blocks, and the payload block is used to carry the service container, and N consecutive As a payload block group, N payload blocks in the same payload block group carry the same service container;
  • the bearer module is configured to bear the indication information of the payload block group in the overhead area of the optical transport network frame.
  • the embodiments of the present disclosure also provide an electronic device, including:
  • One or more processors are One or more processors;
  • a memory having one or more programs stored thereon, and when the one or more programs are executed by the one or more processors, the one or more processors realize the same as those provided in the first aspect and the second aspect Methods.
  • embodiments of the present disclosure also provide a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, the methods provided in the first and second aspects are implemented.
  • FIG. 1 is a schematic diagram of an optical path frame structure involved in an embodiment of the disclosure
  • Fig. 2 is a schematic diagram showing that the payload area of the optical path frame structure in the optical transmission standard in the related art is divided into 4 time slots;
  • FIG. 3 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure
  • FIG. 4 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure
  • FIG. 5 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure
  • FIG. 6 is a flowchart of a service processing method provided by an embodiment of the disclosure.
  • FIG. 7 is a flowchart of a service processing method in an optical transport network according to an embodiment of the disclosure.
  • FIG. 8 is a flowchart of a service processing method in an optical transport network according to an embodiment of the disclosure.
  • FIG. 9 is a schematic diagram of a transmission scenario in Example 1 of the present disclosure.
  • FIG. 10 is a schematic diagram of two adjacent optical transport network frames in an embodiment of the disclosure.
  • FIG. 11 is a schematic diagram of a transmission scenario in Example 2 of the present disclosure.
  • FIG. 12 is a schematic diagram of two adjacent optical transport network frames in an embodiment of the disclosure.
  • FIG. 13 is a structural block diagram of a service processing device in an optical transport network provided by an embodiment of the disclosure.
  • FIG. 14 is a structural block diagram of an electronic device provided by an embodiment of the disclosure.
  • FIG. 1 is a schematic diagram of the optical channel frame structure involved in the embodiments of the disclosure.
  • the optical transport network signal is used as the optical channel transport unit (OTU) signal in the embodiment of the disclosure.
  • OTU signal is composed of OTUk frame, including overhead area and payload area.
  • the overhead area includes: optical path transmission unit overhead (denoted as "OTUk overhead”, k can take values 1, 2, 3, 4), optical channel digital unit (Optical channel Data Unit, referred to as ODU) overhead (denoted as "ODUk overhead", k can take values 0, 1, 2, 2e, 3, 4) and optical channel payload unit (Optical channel Payload Unit, referred to as OPU)
  • OTUk overhead optical path transmission unit overhead
  • ODUk overhead optical channel digital unit
  • ODUk overhead denotes 0, 1, 2, 2e, 3, 4
  • OPU optical channel payload unit
  • the overhead denoted as "OPUk overhead”
  • k can take values 0, 1, 2, 2e, 3, 4).
  • the remaining part of the OTUk frame after removing the OTUk overhead is called the ODUk frame
  • the remaining part of the ODUk frame after removing the ODUk overhead is called the OPUk frame
  • the remaining part of the OPUk frame after removing the OPUk overhead is called the OPUk payload (that is, the optical path frame).
  • Fig. 2 is a schematic diagram showing that the payload area of the optical path frame structure in the optical transmission standard in the related art is divided into 4 time slots.
  • the method in the network signal payload is to divide the optical transport network signal payload into n time slots, and then load the service signal into one or more time slots in the optical transport network signal payload. It is implemented in a plug-in manner, and an example is described by dividing the payload area of the OTUk into 4 time sequences as an example.
  • the OTUk frame is composed of byte blocks with 4 rows and 3824 columns. The area corresponding to the column number from 1 to 16 is the overhead area (not shown), and the area corresponding to the column number from 17 to 3824 is the payload area.
  • a small box in Figure 2 represents one byte.
  • the OPUk payload area of an OPUk frame consists of 4*3808 bytes, arranged in 4 rows and 3808 columns as shown in Figure 2.
  • Figure 2 shows the case when the OPUk payload is divided into 4 time slots by byte interleaving, that is, in a total of 3808 columns, starting from column 17, the adjacent 4 bytes are a group, and the The 4 bytes are divided into 4 different time slots TS1, TS2, TS3, TS4, that is, the consecutive 4 bytes starting from column 17 represent 4 time slots, so that all 4*3808 words in the OPUk payload
  • the smallest ODUk in the optical transport network is ODU0 and the rate is 1.25G, so theoretically, the OPUk payload in OTUk frames of all rates should be divided into 1.25G granularity.
  • the ODU0 can be installed in the most efficient way.
  • some services with small bandwidth such as FE services, STM-1 services, E1 services, etc., using time slots to directly carry them will result in serious bandwidth waste.
  • Fig. 3 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure. As shown in Fig. 3, the method includes:
  • Step S101 Map the customer service to the service container.
  • the customer service specifically refers to the service that belongs to the small-particle service for the optical transport network frame (generally also referred to as the Sub1G service).
  • the ratio of the bandwidth of the customer service to the bandwidth of the payload area of the optical transport network frame is less than a preset proportion, and the specific value of the preset proportion is set by industry professionals. Generally speaking, the value of the preset proportion is less than or equal to 10%. In the embodiment of the present disclosure, it is only necessary to ensure that the bandwidth of the customer service is smaller than the bandwidth of the payload area of the optical transport network frame.
  • the service container includes: ODU frame or Optical Service Unit (Optical Service Unit, OSU for short) frame.
  • ODU frame Optical Service Unit
  • OSU Optical Service Unit
  • Step S102 Map the service container to the optical transport network frame.
  • the payload area of the optical transport network frame is composed of continuous payload blocks, and the payload block is used to carry the service container.
  • Step S103 Carry the indication information of the payload block in the overhead area of the optical transport network frame.
  • the payload block (Payload Block, PB for short) refers to a certain number (greater than 1) of consecutive bits occupied in the payload area, and the payload block is used to carry customer services.
  • PB Packet Block
  • the indication information of the payload block is used to indicate the OTN
  • the indication information of the PB includes: the number of columns in the payload area of the OTN frame where the first byte of the first complete PB in the payload area of the OTN frame is located; for example, in a certain OTN frame In the payload area of the frame, the first byte of the first complete PB is located at the j-th byte in the payload area, then the indication information of the PB is j, and j is an integer.
  • the bytes occupied by the first complete PB are the jth byte to j+L in the payload area -1 byte
  • the byte occupied by the second complete PB is from the j+Lth byte to the j+2L-1th byte, and so on.
  • the indication information of the PB includes: the position information of the first byte in the payload area of the OTN frame in the corresponding PB; for example, the first byte in the payload area of the OTN frame is For the k-th byte in a certain PB, the indication information of the PB is k, and k is an integer.
  • the byte occupied by the first complete PB is the first byte in the payload area ⁇ L-1 byte
  • the byte occupied by the second complete PB is the L byte ⁇ 2L-1 byte in the payload area, and so on
  • the byte occupied by the first complete PB is the L-k+2th byte to the 2L-k+1th byte in the payload area, and so on.
  • P consecutive PBs are used as a transmission period.
  • it further includes: according to the payload bandwidth of the optical transport network frame and the pre-configured PB Expect the bandwidth, determine the size of the P value and the actual bandwidth of the PB.
  • the value of P satisfies: the quotient of the payload bandwidth and P is greater than or equal to the expected bandwidth, the quotient of the payload bandwidth and P+1 is less than the expected bandwidth, and the actual bandwidth of PB is equal to the quotient of the payload bandwidth and the P value.
  • step S102 includes: firstly, calculate the number of PBs required by the service container according to the bandwidth of the service container and the bandwidth of the PB; then, determine the service based on the preset allocation algorithm according to the number of PB required by the service container.
  • the preset allocation algorithm includes the sigma-delta algorithm, and the specific operation process of the sigma-delta algorithm belongs to the conventional technology in the field, and will not be repeated here.
  • the technical solution of the embodiment of the present disclosure can effectively avoid the problem of bandwidth waste by carrying the small particle service to the service container and using the payload block in the payload area to carry the small particle service.
  • Fig. 4 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure. As shown in Fig. 4, the method includes not only steps S101 to S103 in the above embodiment, but also steps S104 to Step S107, only steps S104 to S107 will be described in detail below.
  • Step S104 Receive the optical transport network frame, and obtain the data stream from the payload area of the optical transport network frame.
  • Step S105 Obtain the indication information of the payload block from the overhead area of the optical transport network frame.
  • Step S106 Perform the boundary lock of the payload block on the data stream according to the instruction information of the payload block, and extract the service container data from the payload block.
  • Step S107 Obtain the customer service from the service container.
  • the delimitation of the PB in the payload area of the OTN frame can be realized through the indication information of the payload block located in the overhead area.
  • the specific delimitation process can refer to the corresponding content in the previous embodiment, and will not be repeated here.
  • the business container data can be extracted from the PB to obtain the business container.
  • steps S101 to S103 are applied to the data transmitting side, and steps S104 to S107 are applied to the data receiving side.
  • an optical transport network device can be used as the data sending side and the data receiving side.
  • the required PB length is different in different scenarios; for example, devices from different manufacturers have different requirements for packet length, and the shortest delay can be achieved when the PB size is the same as the packet length; in addition, there is no need for OSU In cross-processing scenarios, choosing the smallest possible PB can shorten the delay.
  • the embodiments of the present disclosure also provide a service processing method in an optical transport network.
  • the method is based on a payload block group to carry service containers.
  • the length of the payload block group is adjustable to adapt to different applications. Scenes.
  • FIG. 5 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure. As shown in FIG. 5, the service processing method in an optical transport network includes:
  • Step S201 Map the customer service to the service container.
  • Step S202 Map the service container to the optical transport network frame, the payload area of the optical transport network frame is composed of payload blocks, the payload block is used to carry the service container, and N consecutive payload blocks are used as a payload block group , N payload blocks located in the same payload block group carry the same service container.
  • N is a positive integer.
  • Step S203 Carry the indication information of the payload block group in the overhead area of the optical transport network frame.
  • the value of N can be configured according to the needs of different application scenarios, so that the length of the payload block group meets actual needs.
  • the indication information of the payload block group includes: N value, payload block delimitation indication, and payload block group delimitation indication.
  • the PB delimitation indicator is used to indicate the corresponding relationship between the payload area of the OTN frame and the PB boundary; based on the PB delimitation indicator, it can be used to lock the PB within the payload area of the OTN frame (also known as PB delimitation).
  • Boundary that is, the starting position of each PB in the payload area of the OTN frame can be determined.
  • the PB group delimitation indicator is used to indicate the correspondence between the payload area of the OTN frame and the PB group boundary; based on the PB group delimitation indicator, it can be used to lock the PB group within the payload area of the OTN frame (also called PB group delimitation), that is, the starting position of each PB group in the payload area of the OTN frame can be determined.
  • the PB delimitation indication includes: the number of columns in the payload area of the OTN frame where the first byte of the first complete PB in the payload area of the OTN frame is located, or in the payload area of the OTN frame The position information of the first byte in the corresponding PB.
  • the PB delimitation indication includes: the number of columns in the payload area of the OTN frame where the first byte of the first complete PB in the payload area of the OTN frame is located, or in the payload area of the OTN frame The position information of the first byte in the corresponding PB.
  • the PB group delimitation indication includes: location information of the first complete PB in the PB group in the payload area of the OTN frame.
  • the first complete PB in the payload area of the OTN frame is the m-th PB in a certain PB group
  • the PB group delimitation indicator is m, where m is an integer and 1 ⁇ m ⁇ N.
  • the service container is composed of byte blocks (BB for short), and the number of bytes in a byte block is equal to the number of bytes in 1 PB; when the service container data is carried to the determined PB In the process in the group, N byte blocks of service container data are carried into 1 PB group.
  • FIG. 6 is a flowchart of a service processing method provided by an embodiment of the disclosure. As shown in FIG. 6, the method includes not only steps S201 to S203 in the foregoing embodiment, but also steps S204 to S207, as follows Only steps S204 to S207 will be described in detail.
  • Step S204 Receive the optical transport network frame, and obtain the data stream from the payload area of the optical transport network frame.
  • Step S205 Obtain the indication information of the payload block group from the overhead area of the optical transport network frame.
  • Step S206 Perform boundary locking of the payload block and the payload block group on the data stream according to the instruction information of the payload block group, and extract the service container data from the payload block group.
  • Step S207 Obtain the customer service from the service container.
  • the delimitation of the PB and PB groups in the payload area of the OTN frame can be realized.
  • the specific delimitation process please refer to the corresponding content in the previous embodiment, and will not be repeated here.
  • the business container data can be extracted from the PBs in the PB group to obtain the business container.
  • steps S201 to S203 are applied to the data transmitting side, and steps S204 to S207 are applied to the data receiving side.
  • an optical transport network device can be used as the data sending side and the data receiving side.
  • FIG. 7 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure.
  • the service processing method in the optical transport network not only includes the above steps S201 to S203, but also includes step S201a after step S201, and includes step S202a after step S202. The following only performs step S201a and step S202a. A detailed description.
  • Step S201a Determine the size of the P value and the actual bandwidth of the payload block group according to the payload bandwidth of the optical transport network frame and the expected bandwidth configured for the payload block group in advance.
  • the value of P satisfies: the quotient of the payload bandwidth and P is greater than or equal to the expected bandwidth, the quotient of the payload bandwidth and P+1 is less than the expected bandwidth, and the actual bandwidth of the payload block group is equal to the quotient of the payload bandwidth and the P value.
  • the expected bandwidth of the PB group can be pre-configured according to actual needs.
  • Step S202a Carry the indication information of the transmission period in the overhead area of the optical transport network frame.
  • P consecutive PB groups are taken as a transmission period, and a P value is calculated based on the bandwidth B of the payload area of the OTN frame and the expected bandwidth R1 of a single PB group, P At the same time meet the following two conditions:
  • one transmission cycle includes P consecutive PB groups, each PB group includes N PBs, the length of each PB is L, and the length of one transmission cycle is P*N*L.
  • the indication information of the transmission period can be carried in the overhead area of the optical transport network frame.
  • the transmission cycle indication information is used to indicate the correspondence between the payload area of the OTN frame and the transmission cycle boundary; based on the transmission cycle indication information, it can be used to lock the transmission cycle within the payload area of the OTN frame (also known as Transmission cycle delimitation).
  • the indication information of the transmission period includes: the number of the payload block group where the first complete payload block is located in the payload area of the optical transport network frame (that is, the payload where the first complete payload block is located).
  • the PB group of the first complete PB in the payload area of the OTN frame is the nth PB in a certain transmission cycle
  • the indication information of the transmission cycle is n, where n is an integer and 1 ⁇ n ⁇ P.
  • the indication information of the PB group can be set only in the overhead area of the OTN frame without setting the indication information of the transmission period, and it can also ensure that the service container data can be extracted subsequently.
  • FIG. 8 is a flowchart of a service processing method in an optical transport network provided by an embodiment of the disclosure. As shown in FIG. 8, the method not only includes all the steps in FIG. 7, but also includes steps S204' to S207', Only steps S204' to S207' will be described in detail below.
  • Step S204' Receive the optical transport network frame, and obtain the data stream from the payload area of the optical transport network frame.
  • Step S205' Obtain the indication information of the payload block group and the indication information of the transmission period from the overhead area of the optical transport network frame.
  • Step S206' According to the instruction information of the payload block group and the instruction information of the transmission period, perform boundary locking of the payload block, the payload block group and the transmission period on the data stream, and extract the service container from the payload block group.
  • Step S207' Obtain the customer service from the service container.
  • step S202 includes: firstly, according to the bandwidth of the service container and the actual bandwidth of the PB group, calculate the number of PB groups that the service container needs to occupy; then, according to the number of PB groups that the service container needs to occupy, The distribution position of the PB group that the service container needs to occupy within a transmission period is determined based on a preset distribution algorithm; then, the service container data is carried to the PB group at the determined distribution position.
  • the preset allocation algorithm includes the sigma-delta algorithm, and the specific operation process of the sigma-delta algorithm belongs to the conventional technology in the field, and will not be repeated here.
  • the delimitation of the PB, the PB group, and the transmission period in the payload area of the OTN frame can be realized.
  • the business container data can be extracted from the PBs in the PB group to obtain the business container.
  • steps S201 to S203 are applied to the data transmitting side, and steps S204' to S207' are applied to the data receiving side.
  • an optical transport network device can be used as the data sending side and the data receiving side.
  • FIG. 9 is a schematic diagram of the transmission scenario of Example 1 of the present disclosure
  • FIG. 10 is a schematic diagram of two adjacent optical transport network frames in an embodiment of the disclosure.
  • the payload area is divided into payload blocks.
  • OTU1 which is represented by OSU#1.
  • OSU#1 There is no cross device between the two OTN devices, so there is no need to divide PB groups to directly carry data services based on a single PB.
  • the payload bandwidth of OTU1 is 2488320Kbps, and the expected bandwidth of each PB is 10Mbps.
  • P the ratio of OTU1's payload bandwidth to P is approximately equal to 10.03Mbps, which is the closest to the expected bandwidth. So the actual bandwidth of PB is 10.03Mbps.
  • An OSU has a bandwidth of 60M and a PB has a bandwidth of 10.03Mbps.
  • 6 PBs are needed to carry the OSU.
  • the distribution positions of the 6 PBs in the 248 PBs corresponding to a transmission cycle are calculated, and the OSUs It is carried in the 6 PBs at the determined distribution location.
  • the PB data stream is extracted from the payload area of the OTU1 frame, PB is delimited according to the indication information j of the overhead area of the ODU1 frame, and the OSU data is extracted from the PB, and from Obtain customer business in OSU.
  • FIG. 11 is a schematic diagram of the transmission scenario of Example 2 of the present disclosure
  • FIG. 12 is a schematic diagram of two adjacent optical transport network frames in an embodiment of the disclosure.
  • the payload area is divided into payload blocks.
  • OTU1 which is represented by OSU#1
  • the two OTN devices span two cross-connect devices, so the PB group can be used as the object to carry data services. It can be processed in accordance with the business processing methods shown in Figures 5 to 8. The specific process is as follows.
  • the payload bandwidth of OTU1 is 2488320Kbps, and the expected bandwidth of each PB group is 10Mbps.
  • P the ratio of OTU1's payload bandwidth to P is approximately equal to 10.03Mbps, which is the closest to the expected bandwidth.
  • the PB delimitation indicates the number of columns in the payload area of the first complete PB in the payload area of the optical transport network frame
  • An OSU has a bandwidth of 40Mbps and a PB group has a bandwidth of 10.03Mbps.
  • 4 PBs are required to carry the OSU.
  • the distribution positions of the 4 PB groups in the 248 PB groups corresponding to a transmission cycle are calculated. And the OSU is carried in 4 PBs at the determined distribution location.
  • the PB group is delimited, and the OSU data is extracted from the PB group, and customer services are obtained from the OSU.
  • FIG. 13 is a structural block diagram of a service processing device in an optical transport network provided by an embodiment of the disclosure.
  • the service processing device can be used to implement the service processing method provided in the previous embodiment, and the service processing device includes a first A mapping module, a second mapping module and a bearing module.
  • the service processing apparatus may further include a first acquisition module, a second acquisition module, an extraction module, and a third acquisition module.
  • the service processing apparatus may be used to implement the service processing methods provided in FIG. 3 and FIG. 4, and at this time, the first mapping module is used to map the customer service to the service container.
  • the second mapping module is used to map the service container to the optical transport network frame.
  • the payload area of the optical transport network frame is composed of payload blocks, which are used to carry the service container; the bearer module is used to indicate the payload block
  • the information is carried in the overhead area of the optical transport network frame.
  • the first acquisition module is used to receive the optical transport network frame and obtain the data stream from the payload area of the optical transport network frame;
  • the second acquisition module is used to obtain the instruction of the payload block from the overhead area of the optical transport network frame Information;
  • the extraction module is used to lock the boundary of the payload block on the data stream according to the instruction information of the payload block, and extract business container data from the payload block;
  • the third acquisition module acquires customer services from the business container.
  • the service processing apparatus can be used to implement the service processing methods provided in FIGS. 5 to 8.
  • the first mapping module is used to map the customer service to the service container;
  • the second mapping module is used to map the service
  • the container is mapped to the optical transport network frame.
  • the payload area of the optical transport network frame is composed of payload blocks.
  • the payload blocks are used to carry the service container.
  • N consecutive payload blocks are used as a payload block group and are located in the same payload.
  • the N payload blocks in the block group carry the same service container;
  • the bearer module is used to carry the indication information of the payload block group in the overhead area of the optical transport network frame.
  • the first acquisition module is used to receive the optical transport network frame and obtain the data stream from the payload area of the optical transport network frame;
  • the second acquisition module is used to obtain the payload block group information from the overhead area of the optical transport network frame Instruction information;
  • the extraction module is used to lock the boundary of the payload block and the payload block group on the data stream according to the instruction information of the payload block group, and extract business container data from the payload block group;
  • the third acquisition module is used to Get customer business from the business container.
  • FIG. 14 is a structural block diagram of an electronic device provided by an embodiment of the disclosure.
  • the electronic device 10 may be a mobile terminal, a computer terminal or a similar computing device.
  • the electronic device 10 includes one or more processors 102 (only one is illustrated in the drawings, and the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104; wherein One or more programs are stored in the memory 104.
  • the one or more processors implement the steps in the processing methods provided in the previous embodiments.
  • the above-mentioned mobile terminal may further include a transmission device 106 and an input/output device 108 for communication functions.
  • a transmission device 106 may further include a transmission device 106 and an input/output device 108 for communication functions.
  • the structure shown in FIG. 14 is only for illustration, and it does not limit the structure of the above-mentioned mobile terminal.
  • the mobile terminal 10 may also include more or fewer components than shown in FIG. 14, or have a different configuration from that shown in FIG.
  • the memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as the computer programs corresponding to the service processing method in the optical transport network in the embodiment of the present disclosure.
  • the processor 102 runs the computer programs stored in the memory 104 , So as to perform various functional applications and data processing, that is, to achieve the above methods.
  • the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories may be connected to the mobile terminal 10 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the transmission device 106 is used to receive or send data via a network.
  • the above-mentioned specific example of the network may include a wireless network provided by the communication provider of the mobile terminal 10.
  • the transmission device 106 includes a network adapter (Network Interface Controller, NIC for short), which can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 may be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet in a wireless manner.
  • RF Radio Frequency
  • the embodiments of the present disclosure also provide a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, the steps in the processing method provided in the previous embodiments are implemented.
  • the technical solution provided by the embodiments of the present disclosure can solve the problem of serious bandwidth waste caused by transmitting optical transmission services by dividing the payload area into time slots in the prior art, and achieve the effect of improving the bandwidth utilization rate of the optical transmission network.
  • Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium).
  • the term computer storage medium includes volatile and non-volatile memory implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Sexual, removable and non-removable media.
  • Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or Any other medium used to store desired information and that can be accessed by a computer.
  • a communication medium usually contains 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 medium. .

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Abstract

本公开提供了一种光传送网中业务处理方法，包括：将客户业务映射到业务容器中；将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器；将所述净荷块的指示信息承载在所述光传送网帧的开销区域。本公开实施例还提供了一种光传送网中业务处理装置、电子设备和计算机可读介质。

Description

光传送网中业务处理方法、处理装置和电子设备 技术领域
本公开实施例涉及光通信技术领域，特别涉及一种光传送网中业务处理方法、处理装置、电子设备和计算机可读介质。
背景技术
在现有光传送网(Optical Transport Network，简称为OTN)的定义中，多个业务信号装到光传送网信号的净荷中的方法如下：首先，将光传送网信号的区域划分为n个时隙，时隙以字节间插的方式实现；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。
按照现有的光传送网标准G.709，现有的OTN技术时隙颗粒度最小为1.25Gbps；在承载带宽低于1.25Gbps的业务时，例如以太网(Fast Ethernet，简称FE)业务、同步传输模块-1(Synchronous Transfer Module-1，简称STM-1)业务、E1业务等小带宽业务，光传送网的带宽浪费非常严重，例如E1信号带宽为2.048Mbps，装到带宽为1.25Gbps的时隙中，带宽浪费高达99％以上，因此需要一种传输技术来实现在OTN中高效率承载小颗粒业务的方法。
发明内容
本公开实施例提供了一种光传送网中业务处理方法、处理装置和电子设备。
第一方面，本公开实施例提供了一种光传送网中业务处理方法，其中，包括：
将客户业务映射到业务容器中；
将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器；
将所述净荷块的指示信息承载在所述光传送网帧的开销区域。
第二方面，本公开实施例提供了一种光传送网中业务处理方法，其中，包括：
将客户业务映射到业务容器中；
将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器；
将所述净荷块组的指示信息承载在所述光传送网帧的开销区域。
第三方面，本公开实施例还提供了一种光传送网中业务处理装置，其中，包括：
第一映射模块，设置为将客户业务映射到业务容器中；
第二映射模块，设置为将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器；
承载模块，设置为将所述净荷块的指示信息承载在所述光传送网帧的开销区域。
第四方面，本公开实施例还提供了一种光传送网中业务处理装置，其中，包括：
第一映射模块，设置为将客户业务映射到业务容器中；
第二映射模块，设置为将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器；
承载模块，设置为将所述净荷块组的指示信息承载在所述光传送网帧的开销区域。
第五方面，本公开实施例还提供了一种电子设备，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如第一方面和第二方面提供的方法。
第六方面，本公开实施例还提供了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如第一方面和第二方面提供的方法。
附图说明
图1为本公开实施例中涉及到的光通路帧结构的示意图；
图2相关技术中光传送标准中光通路帧结构的净荷区域划分为4个时隙的示意图；
图3为本公开实施例提供的一种光传送网中业务处理方法的流程图；
图4为本公开实施例提供的一种光传送网中业务处理方法的流程图；
图5为本公开实施例提供的一种光传送网中业务处理方法的流程图；
图6为本公开实施例提供的一种业务处理方法的流程图；
图7为本公开实施例提供的一种光传送网中业务处理方法的流程图；
图8为本公开实施例提供的一种光传送网中业务处理方法的流程图；
图9为本公开示例一的传输场景示意图；
图10为本公开实施例中相邻2个光传送网帧的一种示意图；
图11为本公开示例二的传输场景示意图；
图12为本公开实施例中相邻2个光传送网帧的一种示意图；
图13为本公开实施例提供的一种光传送网中业务处理装置的结构框图；
图14为本公开实施例提供的一种电子设备的结构框图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图对本发明提供的一种光传送网中业务处理方法、处理装置、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。
图1为本公开实施例中涉及到的光通路帧结构的示意图，如图1所示，本公开实施例中以光传送网信号为光通路传送单元(Optical channel Transport Unit，简称为OTU)信号为例进行描述。OTU信号由OTUk帧构成，包括开销区域和净荷区域，开销区域包括：光通路传送单元的开销(记为“OTUk开销”，k可取值1，2，3，4)、光通道数字单元(Optical channel Data Unit，简称为ODU)的开销(记为“ODUk开销”，k可取值0，1，2， 2e，3，4)和光通道净荷单元(Optical channel Payload Unit，简称OPU)的开销(记为“OPUk开销”，k可取值0，1，2，2e，3，4)。OTUk帧中去掉OTUk开销后剩下的部分叫做ODUk帧，ODUk帧中去掉ODUk开销后剩下的部分叫OPUk帧，OPUk帧去掉OPUk开销后剩下的部分叫OPUk净荷(即，光通路帧结构的净荷区域)。净荷区域可用来承载业务信号。
图2相关技术中光传送标准中光通路帧结构的净荷区域划分为4个时隙的示意图，如图2所示，在现有光传送网的定义中，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，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，以将OTUk的净荷区域划分为4个时序为例进行示例性描述。OTUk帧由4行、3824列的字节块所组成，列号从1到16对应的区域为开销区域(未示出)，列号从17到3824对应区域为净荷区域。图2中一个小方框代表一个字节，一个OPUk帧的OPUk净荷区由4*3808个字节组成，排成如图2所示的4行3808列。图2表示OPUk净荷被以字节间插的方式划分为4个时隙时的情况，即在共计3808列中，从列17开始，相邻的4个字节一组，每组中的4个字节分别划分到4个不同的时隙TS1，TS2，TS3，TS4，即从列17开始连续的4个字节分别表示4个时隙，这样OPUk净荷中的所有4*3808字节被划分为4个时隙，分别命名为TS1、TS2、TS3、TS4，m个时隙可以装一个ODU业务(m小于OPUk净荷中的最大时隙数n，图2中n＝4)。
按照现有的光传送网标准G.709，光传送网中最小的ODUk为ODU0，速率为1.25G，这样理论上说所有速率的OTUk帧中的OPUk净荷都应该划分为1.25G粒度的时隙，这样能够最高效的装下ODU0。此时，对于一些带宽小的业务，例如FE业务、STM-1业务、E1业务等，利用时隙直接承载，会导致带宽浪费严重。
为至少解决上述技术问题，本公开提出了相应的解决方案，下面将结合附图来进行示例性描述。
图3为本公开实施例提供的一种光传送网中业务处理方法的流程图，如图3所示，该方法包括：
步骤S101、将客户业务映射到业务容器中。
在本公开实施例中，客户业务具体是指对于光传送网帧而言属于小颗粒业务的业务(一般也称为Sub1G业务)。可选地，客户业务的带宽与光传送网帧的净荷区域的带宽之比小于预设占比，该预设占比具体取值是由行业专业人员来设定。一般而言，该预设占比的取值小于或等于10％。在本公开实施例中，仅需保证客户业务的带宽小于光传送网帧的净荷区域的带宽即可。
在本公开实施例中，业务容器包括：ODU帧或光服务层单元(Optical Service Unit，简称OSU)帧。将客户业务映射到业务容器的过程属于本领域的常规技术，此处不再赘述。
步骤S102、将业务容器映射到光传送网帧中，光传送网帧的净荷区域由连续的净荷块组成，净荷块用于承载业务容器。
步骤S103、将净荷块的指示信息承载在光传送网帧的开销区域。
其中，净荷块(Payload Block，简称PB)是指净荷区域内占用一定数量(大于1)的连续比特，净荷块用于承载客户业务。在对OTN帧划分PB时，由于PB可能会跨域两个相邻的OTN帧，因此需要在OTN帧的开销区域中承载净荷块的指示信息，该净荷块的指示信息用于表示OTN帧的净荷区域与PB边界的对应关系；基于该净荷块的指示信息，可用于对OTN帧的净荷区域内的PB进行边界锁定(也称为定界)，即能够确定出该OTN帧的净荷区域内各PB的起始位置。
在一些实施例中，PB的指示信息包括：OTN帧的净荷区域中第一个完整PB的首个字节在OTN帧的净荷区域内所处列数；示例性地，在某个OTN帧的净荷区域内，第一个完整PB的首个字节位于净荷区域内第j字节，则该PB的指示信息即为j，j为整数。假定预先设计的PB长度为L，L≥j≥1，则在该OTN帧的净荷区域内，第一个完整PB所占字节为净荷 区域内的第j字节至第j+L-1字节，第二个完整PB所占字节为第j+L字节至第j+2L-1字节，以此类推。
在另一些实施例中，PB的指示信息包括：OTN帧的净荷区域中第一个字节在对应PB中的位置信息；示例性地，OTN帧的净荷区域中第一个字节为某个PB中的第k字节，则该PB的指示信息即为k，k为整数。假定预先设计的PB长度为L，L≥k≥1；若k＝1，则在该OTN帧的净荷区域内，第一个完整PB所占字节为净荷区域内的第1字节～第L-1字节，第二个完整PB所占字节为净荷区域内的第L字节～第2L-1字节，以此类推；若k≠1，则在该OTN帧的净荷区域内，第一个完整PB所占字节为净荷区域内的第L-k+2字节～第2L-k+1字节，以此类推。
在一些实施例中，在光传送网帧的净荷区域中，P个连续的PB作为一个传送周期，该进行步骤S102之前还包括：根据光传送网帧的净荷带宽和预先为PB配置的期望带宽，确定P值的大小以及PB的实际带宽。其中，P值的大小满足：净荷带宽与P的商大于或等于期望带宽，净荷带宽与P+1的商小于期望带宽，PB的实际带宽等于净荷带宽与P值的商。
此时，步骤S102包括：首先，根据业务容器的带宽以及PB的带宽计算出业务容器所需占用的PB的数量；然后，根据业务容器所需占用的PB的数量，基于预设分配算法确定业务容器所需占用的PB在OTN帧的传送周期中的分布位置；接着，将业务容器数据承载至所确定分布位置处的PB内。其中，预设分配算法包括sigma-delta算法，sigma-delta算法的具体运算过程属于本领域的常规技术，此处不再赘述。
本公开实施例的技术方案，通过将小颗粒业务承载至业务容器，并利用净荷区域内净荷块来承载小颗粒业务，可有效避免带宽浪费的问题。
图4为本公开实施例提供的一种光传送网中业务处理方法的流程图，如图4所示，该方法包括不但包括上述实施例中的步骤S101～步骤S103，还包括：步骤S104～步骤S107，下面仅对步骤S104～步骤S107进行详细描述。
步骤S104、接收光传送网帧，并从光传送网帧的净荷区域获取数据流。
步骤S105、从光传送网帧的开销区域获取净荷块的指示信息。
步骤S106、根据净荷块的指示信息对数据流进行净荷块的边界锁定，并从净荷块中提取出业务容器数据。
步骤S107、从业务容器中获取客户业务。
其中，通过位于开销区域内的净荷块的指示信息，可实现对OTN帧的净荷区域中PB的定界，具体定界过程可参见前面实施例中相应内容，此处不再赘述。在完成定界后，可从PB中提取出业务容器数据，从而得到业务容器。
需要说明的是，步骤S101～步骤S103应用于数据发送侧，步骤S104～步骤S107应用于数据接收侧。在实际应用中，一个光传送网设备，其既可以作为数据发送侧，也可以作为数据接收侧。
在实际应用中，在不同的场景下所需要的PB长度不同；例如，不同厂家的设备对分组长度有不同的需求，PB大小和分组长度一样时可以达到最短延迟；另外，在OSU不需要进行交叉处理的场景中，选择尽可能小的PB可以缩短延迟。
为解决上述技术问题，本公开实施例还提供了一种光传送网中业务处理方法，该方法基于净荷块组来承载业务容器，净荷块组的长度可调，以适应于不同的应用场景。
图5为本公开实施例提供的一种光传送网中业务处理方法的流程图，如图5所示，该光传送网中业务处理方法包括：
步骤S201、将客户业务映射到业务容器中。
步骤S202、将业务容器映射到光传送网帧中，光传送网帧的净荷区域由净荷块组成，净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器。
其中，N为正整数。
步骤S203、将净荷块组的指示信息承载在光传送网帧的开销区域。
在本公开实施例中，根据不同应用场景的需要，可对N值进行配置，以使得净荷块组的长度满足实际需要。
在一些实施例中，净荷块组的指示信息包括：N值、净荷块定界指示和净荷块组定界指示。
其中，PB定界指示用于表示OTN帧的净荷区域与PB边界的对应关系；基于该PB定界指示，可用于对OTN帧的净荷区域内的PB进行边界锁定(也称为PB定界)，即能够确定出该OTN帧的净荷区域内各PB的起始位置。PB组定界指示用于表示OTN帧的净荷区域与PB组边界的对应关系；基于该PB组定界指示，可用于对OTN帧的净荷区域内的PB组进行边界锁定(也称为PB组定界)，即能够确定出该OTN帧的净荷区域内各PB组的起始位置。
在一些实施例中，PB定界指示包括：OTN帧的净荷区域中第一个完整PB的首个字节在OTN帧的净荷区域内所处列数，或者OTN帧的净荷区域中第一个字节在对应PB中的位置信息。具体描述可参见前面实施例中相应内容，此处不再赘述。
在一些实施例中，PB组定界指示包括：OTN帧的净荷区域中第一个完整PB在所处PB组中的位置信息。示例性地，OTN帧的净荷区域中第一个完整PB为某个PB组中的第m个PB，则该PB组定界指示即为m，m为整数且1≤m≤N。通过PB定界指示和PB组定界指示，可确定OTN帧的净荷区域中各PB组所占用的字节位置，即确定PB组的边界。
在一些实施例中，业务容器由字节块(Byte Block，简称BB)组成，1个字节块的字节数等于1个PB的字节数；在将业务容器数据承载至所确定的PB组内的过程中，将业务容器数据的N个字节块承载至1个PB组内。
图6为本公开实施例提供的一种业务处理方法的流程图，如图6所示， 该方法包括不但包括上述实施例中的步骤S201～步骤S203，还包括：步骤S204～步骤S207，下面仅对步骤S204～步骤S207进行详细描述。
步骤S204、接收光传送网帧，并从光传送网帧的净荷区域获取数据流。
步骤S205、从光传送网帧的开销区域获取净荷块组的指示信息。
步骤S206、根据净荷块组的指示信息对数据流进行净荷块和净荷块组的边界锁定，并从净荷块组中提取出业务容器数据。
步骤S207、从业务容器中获取客户业务。
其中，通过位于开销区域内的PB组的指示信息，可实现对OTN帧的净荷区域中PB和PB组的定界，具体定界过程可参见前面实施例中相应内容，此处不再赘述。在完成定界后，可从PB组内的PB中提取出业务容器数据，从而得到业务容器。
需要说明的是，步骤S201～步骤S203应用于数据发送侧，步骤S204～步骤S207应用于数据接收侧。在实际应用中，一个光传送网设备，其既可以作为数据发送侧，也可以作为数据接收侧。
图7为本公开实施例提供的一种光传送网中业务处理方法的流程图，如图7所示，在本实施例中，在OTN帧的净荷区域中，P个连续的净荷块组作为一个传送周期，该光传送网中业务处理方法不但包括上述步骤S201～步骤S203，还在步骤S201之后包括步骤S201a，以及在步骤S202之后包括步骤S202a，下面仅对步骤S201a和步骤S202a进行详细描述。
步骤S201a、根据光传送网帧的净荷带宽和预先为净荷块组配置的期望带宽，确定P值的大小以及净荷块组的实际带宽。
其中，P值的大小满足：净荷带宽与P的商大于或等于期望带宽，净荷带宽与P+1的商小于期望带宽，净荷块组的实际带宽等于净荷带宽与P值的商。PB组的期望带宽可根据实际需要进行预先配置。
步骤S202a、将传送周期的指示信息承载在光传送网帧的开销区域。
在本实施例中，在OTN帧的净荷区域中，将P个连续的PB组作为一个传送周期，根据OTN帧的净荷区带宽B和单个PB组的期望带宽R1计算一个P值，P同时满足如下2个条件：
条件1：B/P>R1；
条件2：B/(P+1)<R1。
在计算出P后，可计算出每个PB组的实际带宽R2＝B/P，PB组的长度通过N值的配置实现可调。
在本实施例中，一个传送周期包括P个连续的PB组，每个PB组包括N个PB，每个PB的长度为L，一个传送周期的长度为P*N*L。
为便于对传送周期的定界，可将传送周期的指示信息承载在光传送网帧的开销区域。传送周期的指示信息用于表示OTN帧的净荷区域与传送周期边界的对应关系；基于该传送周期的指示信息，可用于对OTN帧的净荷区域内的传送周期进行边界锁定(也称为传送周期定界)。
在一些实施例中，传送周期的指示信息包括：光传送网帧的净荷区域内第一个完整净荷块所在的净荷块组的编号(即第一个完整净荷块所在的净荷块组在相应传送周期内的组号)。示例性地，OTN帧的净荷区域中第一个完整PB所处PB组为某个传送周期中的第n个PB，则该传送周期的指示信息即为n，n为整数且1≤n≤P。通过传送周期的指示信息和PB的指示信息，可确定OTN帧的净荷区域中各传送周期所占用的字节位置，即确定传送周期组的边界。需要说明的是，在本公开中设置“传送周期的指示信息”，其仅为本公开实施例中的一种可选实施方案。在一些实施例中，可以仅在OTN帧的开销区域设置PB组的指示信息而不设置传送周期的指示信息，也可以保证后续能够提取出业务容器数据。
图8为本公开实施例提供的一种光传送网中业务处理方法的流程图，如图8所示，该方法不但包括上述图7中的全部步骤，还包括步骤S204'～步骤S207'，下面仅对步骤S204'～步骤S207'进行详细描述。
步骤S204’、接收光传送网帧，并从光传送网帧的净荷区域获取数据 流。
步骤S205’、从光传送网帧的开销区域获取净荷块组的指示信息和传送周期的指示信息。
步骤S206’、根据净荷块组的指示信息和传送周期的指示信息，对数据流进行净荷块、净荷块组和传送周期的边界锁定，并从净荷块组中提取出业务容器。
步骤S207’、从业务容器中获取客户业务。
在一些实施例中，步骤S202包括：首先，根据业务容器的带宽以及PB组的实际带宽计算出业务容器所需占用的PB组的数量；然后，根据业务容器所需占用的PB组的数量，基于预设分配算法确定业务容器所需占用的PB组在一个传送周期内的分布位置；接着，将业务容器数据承载至所确定分布位置处的PB组内。其中，预设分配算法包括sigma-delta算法，sigma-delta算法的具体运算过程属于本领域的常规技术，此处不再赘述。
在本公开实施例中，通过位于开销区域内的净荷块组的指示信息和传送周期的指示信息，可实现对OTN帧的净荷区域中PB、PB组和传送周期的定界，具体定界过程可参见前面实施例中相应内容，此处不再赘述。在完成定界后，可从PB组内的PB中提取出业务容器数据，从而得到业务容器。
需要说明的是，步骤S201～步骤S203应用于数据发送侧，步骤S204'～步骤S207'应用于数据接收侧。在实际应用中，一个光传送网设备，其既可以作为数据发送侧，也可以作为数据接收侧。
下面将结合具体示例进行详细描述。
图9为本公开示例一的传输场景示意图，图10为本公开实施例中相邻2个光传送网帧的一种示意图，如图9和图10所示，假定以长度60字节来对净荷区域划分净荷块。两个OTN设备通之间通过OTU1传送1个带宽为60Mbps的OSU客户信号，由OSU#1表示，两个OTN设备中间无交叉设备，因此无需划分PB组直接以单个PB为对象进行数据业务承 载，可对应图3和图4的业务处理方法来进行处理，具体过程如下。
1)OTU1的净荷带宽为2488320Kbps，每个PB的期望带宽值为10Mbps，通过计算可以得到当P＝248时OTU1的净荷带宽与P比值结果约等于10.03Mbps，其与期望带宽最为接近，因此PB的实际带宽为10.03Mbps。
2)在发送侧，从ODU1第一帧为起始，一个ODU1帧的净荷区域包含4*3808＝15232个字节，因此会存在一个60字节的PB将会跨越两个相邻的ODU1帧，其中第一帧ODU1包含一个PB的前52字节，第二个ODU1帧包含一个PB的后8个字节。以PB的指示信息包括OTN帧的净荷区域中第一个完整PB的首个字节在OTN帧的净荷区域内所处列数为例，则第二个ODU1帧所对应的PB的指示信息j＝9。
3)将j＝9作为指示信息承载到第二个ODU1帧的开销区域。
4)一个OSU带宽为60M，一个PB带宽为10.03Mbps，需要6个PB承载该OSU，根据sigma-delta算法计算6个PB在一个传送周期所对应的248个PB中的分布位置，并将OSU承载在所确定分布位置处的6个PB中。
5)在接收侧，收到OTU1帧，从OTU1帧的净荷区域提取出PB数据流，根据ODU1帧的开销区域的指示信息j进行PB定界，并从PB中提取该OSU数据，且从OSU中获取客户业务。
图11为本公开示例二的传输场景示意图，图12为本公开实施例中相邻2个光传送网帧的一种示意图，如图11和图12所示，假定以长度60字节来对净荷区域划分净荷块。两个OTN设备通之间通过OTU1传送1个带宽为40Mbps的OSU客户信号，由OSU#1表示；两个OTN设备中间跨越了两个交叉设备，因此可以以PB组为对象进行数据业务承载，可对应图5～图8的业务处理方法来进行处理。具体过程如下。
1)OTU1的净荷带宽为2488320Kbps，每个PB组的期望带宽值为10Mbps，通过计算可以得到当P＝248时OTU1的净荷带宽与P比值结果 约等于10.03Mbps，其与期望带宽最为接近，因此PB组的实际带宽为10.03Mbps。
2)由于需要经过2个交叉设置，此时可使用连续4个PB作为一个PB组来承载数据，即N取值为4，此时248×4×60＝59520个字节作为一个传送周期。
3)在发送侧，从ODU1第一帧为起始，一个ODU1帧的净荷区域包含4*3808＝15232个字节，因此会存在一个60字节的PB将会跨越两个相邻的ODU1帧，其中第一帧ODU1包含一个PB的前52字节，第二个ODU1帧包含一个PB的后8个字节，且该PB位于一个PB组中的第2个PB。以PB定界指示包括光传送网帧的净荷区域中第一个完整PB的首个字节在净荷区域内所处列数，PB组定界指示包括光传送网帧的净荷区域中第一个完整PB在所处PB组中的位置信息为例，则第二个ODU1帧所对应的PB定界指示j＝9，第二个ODU1帧所对应的PB定界指示m＝3。
4)将N＝4、j＝9、m＝3作为PB块组的指示信息承载到第二个ODU1帧的开销区域。
5)一个OSU带宽为40Mbps，一个PB组带宽为10.03Mbps，需要4个PB承载该OSU，根据sigma-delta算法计算4个PB组在一个传送周期所对应的248个PB组中的分布位置，并将OSU承载在所确定分布位置处的4个PB中。
6)在接收侧，收到OTU1帧，从OTU1帧的净荷区域提取出PB数据流，根据ODU1帧的开销区域内PB组的指示信息N＝4、j＝9、m＝3进行PB和PB组定界，并从PB组中提取该OSU数据，且从OSU中获取客户业务。
图13为本公开实施例提供的一种光传送网中业务处理装置的结构框图，如图13所示，该业务处理装置可用于实现前面实施例提供的业务处理方法，该业务处理装置包括第一映射模块、第二映射模块和承载模块。在一些实施例中，该业务处理装置还可包括第一获取模块、第二获取模块、 提取模块和第三获取模块。
在一些实施例中，该业务处理装置可用于实现图3和图4所提供的业务处理方法，此时第一映射模块用于将客户业务映射到业务容器中。第二映射模块用于将业务容器映射到光传送网帧中，光传送网帧的净荷区域由净荷块组成，净荷块用于承载业务容器；承载模块用于将净荷块的指示信息承载在光传送网帧的开销区域。
与此同时，第一获取模块用于接收光传送网帧，并从光传送网帧的净荷区域获取数据流；第二获取模块用于从光传送网帧的开销区域获取净荷块的指示信息；提取模块用于根据净荷块的指示信息对数据流进行净荷块的边界锁定，并从净荷块中提取出业务容器数据；第三获取模块从业务容器中获取客户业务。
在一些实施例中，该业务处理装置可用于实现图5～图8所提供的业务处理方法，此时第一映射模块用于将客户业务映射到业务容器中；第二映射模块用于将业务容器映射到光传送网帧中，光传送网帧的净荷区域由净荷块组成，净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器；承载模块用于将净荷块组的指示信息承载在光传送网帧的开销区域。
与此同时，第一获取模块用于接收光传送网帧，并从光传送网帧的净荷区域获取数据流；第二获取模块用于从光传送网帧的开销区域获取净荷块组的指示信息；提取模块用于根据净荷块组的指示信息对数据流进行净荷块和净荷块组的边界锁定，并从净荷块组中提取出业务容器数据；第三获取模块用于从业务容器中获取客户业务。
对于上述各模块的具体描述，可参见前面实施例中相应内容，此处不再赘述。
图14为本公开实施例提供的一种电子设备的结构框图，如图14所示，该电子设备10可以为移动终端、计算机终端或者类似的运算装置。该电子设备10包括一个或多个处理器102(附图中仅示例出了一个，处理器 102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和存储器104；其中，存储器104上存储有一个或多个程序，当一个或多个程序被一个或多个处理器102执行，使得一个或多个处理器实现前面实施例提供的处理方法中的步骤。
在一些实施例中，上述移动终端还可以包括用于通信功能的传输设备106以及输入输出设备108。本领域普通技术人员可以理解，图14所示的结构仅为示意，其并不对上述移动终端的结构造成限定。例如，移动终端10还可包括比图14中所示更多或者更少的组件，或者具有与图14所示不同的配置。
存储器104可用于存储计算机程序，例如，应用软件的软件程序以及模块，如本公开实施例中的光传送网中业务处理方法对应的计算机程序，处理器102通过运行存储在存储器104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述的方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至移动终端10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端10的通信供应商提供的无线网络。在一个实例中，传输装置106包括一个网络适配器(Network Interface Controller，简称为NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置106可以为射频(Radio Frequency，简称为RF)模块，其用于通过无线方式与互联网进行通讯。
本公开实施例还提供了一种计算机可读介质，其上存储有计算机程序，程序被处理器执行时实现前面实施例提供的处理方法中的步骤。
本公开实施例提供的技术方案，可解决现有技术中通过将净荷区域划 分为时隙的方式传送光传送业务导致带宽浪费严重的问题，达到提高光传送网带宽利用率的效果。
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 (20)

  1. 一种光传送网中业务处理方法，其中，包括：
    将客户业务映射到业务容器中；
    将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器；
    将所述净荷块的指示信息承载在所述光传送网帧的开销区域。
  2. 根据权利要求1所述的方法，其中，所述净荷块的指示信息包括：所述光传送网帧的净荷区域中第一个完整净荷块的首个字节在所述光传送网帧的净荷区域内所处列数。
  3. 根据权利要求1所述的方法，其中，在所述光传送网帧的净荷区域中，P个连续的净荷块作为一个传送周期；
    所述方法还包括：
    根据所述光传送网帧的净荷带宽和预先为所述净荷块配置的期望带宽，确定P值的大小以及所述净荷块的实际带宽；
    其中，P值的大小满足：所述净荷带宽与P的商大于或等于所述期望带宽，所述净荷带宽与P+1的商小于所述期望带宽，所述净荷块的实际带宽等于所述净荷带宽与P值的商。
  4. 根据权利要求1-3中任一所述的方法，其中，还包括：
    接收所述光传送网帧，并从所述光传送网帧的净荷区域获取数据流；
    从所述光传送网帧的开销区域获取所述净荷块的指示信息；
    根据所述净荷块的指示信息对所述数据流进行净荷块的边界锁定，并从净荷块中提取出业务容器数据；
    从所述业务容器中获取客户业务。
  5. 一种光传送网中业务处理方法，其中，包括：
    将客户业务映射到业务容器中；
    将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器；
    将所述净荷块组的指示信息承载在所述光传送网帧的开销区域。
  6. 根据权利要求5所述的业务处理方法，其中，所述净荷块组的指示信息包括：N值、净荷块定界指示和净荷块组定界指示。
  7. 根据权利要求6所述的业务处理方法，其中，所述净荷块定界指示包括：所述光传送网帧的净荷区域中第一个完整净荷块的首个字节在所述净荷区域内所处列数。
  8. 根据权利要求6所述的业务处理方法，其中，净荷块组定界指示包括：所述光传送网帧的净荷区域中第一个完整净荷块在所处净荷块组中的位置信息。
  9. 根据权利要求5所述的方法，其中，在所述光传送网帧的净荷区域中，P个连续的净荷块组作为一个传送周期；
    所述方法还包括：
    根据所述光传送网帧的净荷带宽和预先为所述净荷块组配置的期 望带宽，确定P值的大小以及所述净荷块组的实际带宽；
    其中，P值的大小满足：所述净荷带宽与P的商大于或等于所述期望带宽，所述净荷带宽与P+1的商小于所述期望带宽，所述净荷块组的实际带宽等于所述净荷带宽与P值的商。
  10. 根据权利要求9所述的方法，所述方法还包括：将传送周期的指示信息承载在所述光传送网帧的开销区域。
  11. 根据权利要求10所述的方法，其中，所述传送周期的指示信息包括：所述光传送网帧的净荷区域内第一个完整净荷块所在的净荷块组的编号。
  12. 根据权利要求5所述的方法，其中，所述业务容器由字节块组成，1个所述字节块的字节数等于1个所述净荷块的字节数；
    在将业务容器数据承载至所确定的净荷块组内的过程中，将业务容器数据的N个字节块承载至1个净荷块组内。
  13. 根据权利要求5-12中任一所述的方法，其中，还包括：
    接收所述光传送网帧，并从所述光传送网帧的净荷区域获取数据流；
    从所述光传送网帧的开销区域获取所述净荷块组的指示信息；
    根据所述净荷块组的指示信息对所述数据流进行净荷块和净荷块组的边界锁定，并从净荷块组中提取出业务容器数据；
    从所述业务容器中获取客户业务。
  14. 根据权利要求10或11所述的方法，其中，还包括：
    接收所述光传送网帧，并从所述光传送网帧的净荷区域获取数据流；
    从所述光传送网帧的开销区域获取所述净荷块组的指示信息和所述传送周期的指示信息；
    根据所述净荷块组的指示信息和所述传送周期的指示信息，对所述数据流进行净荷块、净荷块组和传送周期的边界锁定，并从净荷块组中提取出业务容器；
    从所述业务容器中获取客户业务。
  15. 一种光传送网中业务处理装置，其中，包括：
    第一映射模块，设置为将客户业务映射到业务容器中；
    第二映射模块，设置为将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器；
    承载模块，设置为将所述净荷块的指示信息承载在所述光传送网帧的开销区域。
  16. 根据权利要求15所述的装置，其中，还包括：
    第一获取模块，设置为接收所述光传送网帧，并从所述光传送网帧的净荷区域获取数据流；
    第二获取模块，设置为从所述光传送网帧的开销区域获取所述净荷块的指示信息；
    提取模块，设置为根据所述净荷块的指示信息对所述数据流进行净荷块的边界锁定，并从净荷块中提取出业务容器数据；
    第三获取模块，从所述业务容器中获取客户业务。
  17. 一种光传送网中业务处理装置，其中，包括：
    第一映射模块，设置为将客户业务映射到业务容器中；
    第二映射模块，设置为将所述业务容器映射到光传送网帧中，所述光传送网帧的净荷区域由净荷块组成，所述净荷块用于承载业务容器，N个连续的净荷块作为一个净荷块组，位于同一净荷块组内的N个净荷块承载同一个业务容器；
    承载模块，设置为将所述净荷块组的指示信息承载在所述光传送网帧的开销区域。
  18. 根据权利要求17所述的装置，其中，还包括：
    第一获取模块，设置为接收所述光传送网帧，并从所述光传送网帧的净荷区域获取数据流；
    第二获取模块，设置为从所述光传送网帧的开销区域获取所述净荷块组的指示信息；
    提取模块，设置为根据所述净荷块组的指示信息对所述数据流进行净荷块和净荷块组的边界锁定，并从净荷块组中提取出业务容器数据；
    第三获取模块，设置为从所述业务容器中获取客户业务。
  19. 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1-14中任一所述的方法。
  20. 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权利要求1-14中任一所述的方法。
PCT/CN2020/138122 2020-03-27 2020-12-21 光传送网中业务处理方法、处理装置和电子设备 WO2021190000A1 (zh)

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