WO2018014342A1 - 一种多路业务传送、接收方法及装置 - Google Patents

一种多路业务传送、接收方法及装置 Download PDF

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Publication number
WO2018014342A1
WO2018014342A1 PCT/CN2016/091055 CN2016091055W WO2018014342A1 WO 2018014342 A1 WO2018014342 A1 WO 2018014342A1 CN 2016091055 W CN2016091055 W CN 2016091055W WO 2018014342 A1 WO2018014342 A1 WO 2018014342A1
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Prior art keywords
time slot
service
variable optical
programmable
framing
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PCT/CN2016/091055
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English (en)
French (fr)
Inventor
苏伟
维塞斯马腾
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华为技术有限公司
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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 PCT/CN2016/091055 priority Critical patent/WO2018014342A1/zh
Priority to CN201680087699.7A priority patent/CN109478941B/zh
Priority to EP16909269.9A priority patent/EP3396879B1/en
Priority to JP2018558462A priority patent/JP6636653B2/ja
Publication of WO2018014342A1 publication Critical patent/WO2018014342A1/zh
Priority to US16/046,632 priority patent/US10608766B2/en

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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]
    • H04J3/1664—Optical Transport Network [OTN] carrying hybrid payloads, e.g. different types of packets or carrying frames and packets in the paylaod
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0003—Switching fabrics, e.g. transport network, control network
    • H04J2203/0012—Switching modules and their interconnections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0057—Operations, administration and maintenance [OAM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0064—Admission Control
    • H04J2203/0067—Resource management and allocation
    • H04J2203/0071—Monitoring

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to a method and an apparatus for transmitting and receiving multiple services.
  • the current OTN Optical Transport Network
  • OAM Operaation Administration and Maintenance, operation, management and maintenance
  • TCM Tudem Connection
  • OTN technology defines a standard package structure for mapping various customer services, enabling management and monitoring of customer signals.
  • the structure of the OTN frame is as shown in FIG. 1.
  • the OTN frame is a structure of 4 ⁇ 4080 bytes, that is, 4 rows ⁇ 4080 columns.
  • the OTN frame structure includes a fixed frame area, an OTU (Optical Channel Transport Unit) OH ( Overhead, overhead, ODU (Optical Channel Data Unit) OH, OPU (Optical Channel Payload Unit) OH, OPU payload area (Payload Area), FEC area.
  • the header 16 is the overhead byte
  • the tail 256 is the FEC check byte
  • the middle 3808 is the payload.
  • the OPUk is used to adapt the client signal, including the OPU payload area and OPU OH, where k represents the rate class of the OPU.
  • k represents the rate class of the OPU.
  • ODUk is an information structure used to support OPUk. It consists of OPUk information and ODUk OH. The capacity of ODUk is distinguished by k.
  • OTUk consists of ODUk, FEC area and OTUk OH.
  • the traditional ODUflex is only for a single-way service, and adopts a solidified mapping manner to implement single-channel service bearer transmission.
  • a CBR Constant Bit Rate
  • BMP Bit Synchronous Mapping Procedure
  • For the packet (PKT) service when it is less than or equal to 100G, it is mapped to ODUflex by GFP (Generic Frame Procedure) and then transmitted by high-order ODUk or ODUCn.
  • PTT Packeric Frame Procedure
  • IMP Idle Mapping
  • Procedure idle mapping processing procedure
  • the embodiment of the invention provides a method and a device for transmitting and receiving a multi-path service, which is used to solve the problem that the ODUflex can only be oriented to a single-channel service and cannot realize the customized mapping transmission of the multi-path service.
  • a method for transmitting multiple services includes:
  • mapping transmission control information of the M-way service and the mapping transmission control information of each service carries the transmission requirement of the service, where M ⁇ 2;
  • mapping procedure for the M-way service, where the mapping procedure is used to map the M-way service to a variable optical payload unit by using a programmable time slot group frame
  • the programmable time slot framing refers to a time slot set for satisfying the transmission requirements corresponding to the M services respectively;
  • mapping the M-way traffic to the variable optical payload unit according to the mapping procedure.
  • the transmission requirement of each service includes the flow required by the service.
  • the mapping procedure includes at least a number of time slots included in the programmable time slot framing, a time slot rate, a frame structure of the programmable time slot framing, and a required occupation of each service in the M-way service Number of time slots;
  • mapping procedure for the M-way service including:
  • the data plane has the programmability, and the time slot can be flexibly divided according to service requirements.
  • determining, according to the traffic size corresponding to the M-way service, the number of timeslots and the time-slot rate included in the payload slot group frame including:
  • the method provided by the embodiment of the present invention can effectively utilize the system bandwidth.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, the rate of the programmable time slot framing is n times the time slot rate, and the variable optical payload unit OPUflex rate is 239/ 238*n times the slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: the variable When the optical payload unit is OPUKm, the programmable time slot framing consists of N2 code blocks whose preset code block granularity is s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m means The OPUKm contains the number of OPU instances, the rate of the programmable time slot framing is n times the time slot rate, and the variable optical payload unit OPUKm rate is 239/238*n times the time slot rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • mapping the M-way service to the variable optical payload unit according to the mapping procedure includes:
  • mapping according to a frame structure of the programmable time slot framing, the at least one programmable time slot group mapped into the M path service to a payload area of the variable optical payload unit;
  • the M-way service is separately mapped into the at least one time slot of the programmable time slot group according to the number of time slots required for each service, including:
  • the method provided by the embodiment of the present invention can flexibly map each service into a programmable time slot framing.
  • the transmission requirement of each service includes the service type of the service
  • the M-way service includes a service of the K-channel service type
  • the service of the K-type service type is a group service
  • the number of time slots required for the overall service of the one-way service is
  • the K-way service type is the sum of the number of time slots occupied by the services of the packet service, K ⁇ 2;
  • mapping the current service into a corresponding sub-container included in the programmable time slot group according to the number of time slots occupied by the current service, where the programmable time slot group frame is divided according to the M * way service M * sub-containers, M * M-K+1, the i-th sub-container corresponds to the i-th service, and the i-th sub-container includes n i slots occupied by the i- th service, wherein n 1 +n 2 +...+n i +...+n M* ⁇ n.
  • the method provided by the embodiment of the present invention can flexibly adjust the occupied time slot according to the service type, thereby improving bandwidth utilization.
  • the at least one payload slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable slot group frame.
  • the payload area of the unit including:
  • variable optical payload unit When the variable optical payload unit is OPUflex, it is executed for each programmable time slot framing:
  • the code blocks of the N1 preset code block s1 bytes in the current programmable time slot group are sequentially mapped to the payload area of the OPUflex.
  • the at least one programmable time slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable time slot framing
  • the payload area of the unit including:
  • variable optical payload unit When the variable optical payload unit is OPUKm, it is executed for each payload slot framing:
  • each row of the OPUKm payload area contains 3808 * m / s 2 preset code block granularity is s2 bytes of code blocks.
  • the method before the cost information of the M-channel service is added to the overhead area of the variable optical payload unit, the method further includes:
  • Adding the overhead information required for transmitting the M-way service in the overhead area of the variable optical payload unit including:
  • the slot overhead is 0 ⁇ k ⁇ n-1, and the slot overhead is used to store the mapping overhead information according to a preset rule.
  • the method provided by the embodiment of the present invention can be compatible with the existing frame structure and the overhead monitoring mechanism.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service Overhead Or the time slot corresponding to the last time slot, 1 ⁇ t ⁇ M, and the tth service is any one of the M services.
  • a method for receiving multiple services includes:
  • the frame de-maps the M-way service from the variable optical payload unit, where the programmable time slot framing refers to a time slot set for satisfying the transmission requirements corresponding to the M services, respectively, M ⁇ 2;
  • the demapping procedure includes a number of time slots included in the programmable time slot framing, a frame structure of the programmable time slot framing, and each of the M-way services The number of time slots occupied by the road service;
  • Extracting the overhead information from the overhead area of the variable optical payload unit, and determining a demapping procedure for the variable optical payload unit according to the overhead information including:
  • determining, according to the overhead information, the number of timeslots n in the programmable time slot group frame and the number of time slots occupied by each service including:
  • Extracting PSI[2] to PSI[n+1], identifying the PSI[2] to PSI[n+1], the PSI[2] to PSI[n+1] is used to indicate the allocation occupation of each time slot, and determine that the variable optical payload unit carries the M-way service and the number of time slots occupied by each service, where PSI[j] corresponds to The time slot (j-1) in the programmable time slot group frame is used to indicate the allocation occupancy of the time slot j-1, 2 ⁇ j ⁇ n+1.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, and the rate of the programmable time slot framing is n times the time slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code blocks.
  • the code block is composed of s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in the OPUKm, and the rate of the programmable time slot framing is n times time slot. rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the M-path service is demapped from the payload area of the variable optical payload unit according to the demapping procedure, including:
  • the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service.
  • the at least one programmable time slot framing is demapped from the payload area of the variable optical payload unit according to a frame structure of the programmable time slot framing, including:
  • variable optical payload unit is OPUflex
  • the frame structure of the programmable slot group corresponding to the OPUflex one map is demapped from each r1 row of the payload area of the variable optical payload unit.
  • each row of the payload area of the OPUflex includes 3808/s1 code blocks whose preset code block granularity is s1 bytes.
  • the at least one programmable time slot framing is demapped from the payload area of the variable optical payload unit according to a frame structure of the programmable time slot framing, including:
  • variable optical payload unit is OPUKm
  • the frame structure of the programmable slot group corresponding to the OPUKm one map is demapped from each r2 row of the payload area of the variable optical payload unit.
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks whose preset code block granularity is s2 bytes.
  • extracting the overhead information from the overhead area of the variable optical payload unit further includes:
  • the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service, including:
  • M sub-containers corresponding to the M-way services from the current programmable time slot group according to the number of time slots occupied by each service, the i-th sub-container corresponding to the i-th service, the i-th sub-container Include n i time slots occupied by the i- th service, where n 1 +n 2 +...+n i +...+n M ⁇ n;
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service In the time slot overhead corresponding to the overhead or the last time slot, 1 ⁇ t ⁇ M, and the t-th traffic is any one of the M-path services.
  • a multi-way service delivery device includes:
  • An obtaining unit configured to obtain mapping transmission control information of the M-way service, where the mapping transmission control information of each service carries a transmission requirement of the service, where M ⁇ 2;
  • a processing unit configured to determine, according to the mapping and transmitting control information of the M-way service, a mapping procedure for the M-way service, where the mapping procedure is used to map the M-way service to a programmable slot group to a a dimming payload unit, where the programmable time slot framing refers to a time slot set for satisfying a transmission requirement corresponding to the M services respectively;
  • mapping the M-way traffic to the variable optical payload unit according to the mapping procedure.
  • the transmission requirement of each service includes the traffic required by the service
  • the mapping procedure includes at least a number of time slots included in the programmable time slot framing, a time slot rate, a frame structure of the programmable time slot framing, and a required occupation of each service in the M-way service Number of time slots;
  • the processing unit is configured to:
  • the processing unit when the number of timeslots and the time slot rate of the payload slot group frame are determined according to the traffic size corresponding to the M-way service, the processing unit is configured to:
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, the rate of the programmable time slot framing is n times the time slot rate, and the variable optical payload unit OPUflex rate is 239/ 238*n times the slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code blocks.
  • the code block is composed of s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in the OPUKm, and the rate of the programmable time slot framing is n times time slot. Rate, the variable optical payload unit OPUKm rate is 239/238*n times the slot rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the processing unit when the M-way service is mapped to the variable optical payload unit according to the mapping procedure, the processing unit is configured to:
  • mapping according to a frame structure of the programmable time slot framing, the at least one programmable time slot group mapped into the M path service to a payload area of the variable optical payload unit;
  • the processing Unit for:
  • the transmission requirement of each service includes the service type of the service
  • the processing unit is configured to:
  • the M-way service includes a service of the K-channel service type
  • the service of the K-type service type is a group service
  • the number of time slots required for the overall service of the one-way service is
  • the K-way service type is the sum of the number of time slots occupied by the services of the packet service, K ⁇ 2;
  • mapping the current service into a corresponding sub-container included in the programmable time slot group according to the number of time slots occupied by the current service, where the programmable time slot group frame is divided according to the M * way service M * sub-containers, M * M-K+1, the i-th sub-container corresponds to the i-th service, and the i-th sub-container includes n i slots occupied by the i- th service, wherein n 1 +n 2 +...+n i +...+n M* ⁇ n.
  • the at least one payload slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable slot group frame.
  • the processing unit is configured to:
  • variable optical payload unit When the variable optical payload unit is OPUflex, it is executed for each programmable time slot framing:
  • the code blocks of the N1 preset code block s1 bytes in the current programmable time slot group are sequentially mapped to the payload area of the OPUflex.
  • the at least one programmable time slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable time slot framing
  • the processing unit is configured to:
  • variable optical payload unit When the variable optical payload unit is OPUKm, it is executed for each payload slot framing:
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks with a preset code block granularity of s2 bytes.
  • the processing unit before the cost information of the M optical path is added to the overhead area of the variable optical payload unit, the processing unit is further configured to:
  • the processing unit is configured to:
  • the slot overhead is 0 ⁇ k ⁇ n-1, and the slot overhead is used to store the mapping overhead information according to a preset rule.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the preset rule is: mapping overhead for the t-th traffic
  • the information is stored in the slot overhead corresponding to the first slot in the t-th sub-container corresponding to the t-th traffic, or the slot overhead corresponding to the last slot, 1 ⁇ t ⁇ M, the t-th service It is any one of the M-way services.
  • a multi-channel service receiving apparatus includes:
  • a parsing unit configured to parse the variable optical payload unit
  • a processing unit configured to extract overhead information from an overhead area of the variable optical payload unit, and determine a demapping procedure for the variable optical payload unit according to the overhead information, where the demapping procedure is used to pass
  • the programmable time slot framing demaps the M path service from the variable optical payload unit, where the programmable time slot framing refers to a time slot set used to satisfy the transmission requirements corresponding to the M services respectively. , M ⁇ 2;
  • the demapping procedure includes a number of time slots included in the programmable time slot framing, a frame structure of the programmable time slot framing, and each of the M-way services The number of time slots occupied by the road service;
  • the processing unit is configured to:
  • the processing unit is configured to: when the number of timeslots included in the programmable time slot group frame and the number of time slots occupied by each service are determined according to the cost information,
  • Extracting PSI[2] to PSI[n+1], identifying the PSI[2] to PSI[n+1], the PSI[2] to PSI[n+1] are used to indicate the allocation of each time slot Determining, determining, by the variable optical payload unit, an M-way service, and a number of time slots occupied by each service, where PSI[j] corresponds to a time slot in the programmable time slot group frame (j-1) ), for indicating the allocation occupation of the time slot j-1, 2 ⁇ j ⁇ n+1.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, and the rate of the programmable time slot framing is n times the time slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code blocks.
  • the code block is composed of s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in the OPUKm, and the rate of the programmable time slot framing is n times time slot. rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the processing unit when the M-way service is demapped from the payload area of the variable optical payload unit according to the demapping procedure, the processing unit is configured to:
  • the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service.
  • variable optical payload unit is OPUflex
  • the frame structure of the programmable slot group corresponding to the OPUflex one map is demapped from each r1 row of the payload area of the variable optical payload unit.
  • each row of the payload area of the OPUflex includes 3808/s1 code blocks whose preset code block granularity is s1 bytes.
  • Processing unit for:
  • variable optical payload unit is OPUKm
  • the frame structure of the programmable slot group corresponding to the OPUKm one map is demapped from each r2 row of the payload area of the variable optical payload unit.
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks whose preset code block granularity is s2 bytes.
  • the processing unit when the overhead information is extracted from the overhead area of the variable optical payload unit, the processing unit is further configured to:
  • the processing unit is configured to: when the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service:
  • M sub-containers corresponding to the M-way services from the current programmable time slot group according to the number of time slots occupied by each service, the i-th sub-container corresponding to the i-th service, the i-th sub-container Include n i time slots occupied by the i- th service, where n 1 +n 2 +...+n i +...+n M ⁇ n;
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service In the time slot overhead corresponding to the overhead or the last time slot, 1 ⁇ t ⁇ M, and the t-th traffic is any one of the M-path services.
  • an embodiment of the present invention provides a multi-path service transmission device, including:
  • a memory for storing instructions
  • a processor connected to the transceiver and the memory, respectively, for performing the following operations according to the instructions stored in the memory:
  • mapping transmission control information of the M-way service by the transceiver and mapping transmission control information of each service carries the transmission requirement of the service, where M ⁇ 2;
  • mapping procedure for the M-way service, where the mapping procedure is used to map the M-way service to a variable optical payload unit by using a programmable time slot group frame
  • the programmable time slot framing refers to a time slot set for satisfying the transmission requirements corresponding to the M services respectively;
  • mapping the M-way traffic to the variable optical payload unit according to the mapping procedure.
  • an embodiment of the present invention provides a multi-path service receiving device, including:
  • a memory for storing instructions
  • a processor connected to the transceiver and the memory, respectively, for performing the following operations according to the instructions stored in the memory:
  • the beneficial effects of the embodiments of the present invention are as follows:
  • the embodiment of the present invention provides a multi-path service transmission method, which acquires mapping transmission control information of an M-way service, determines a mapping procedure of the M-way service, and maps the M-way service according to the mapping procedure.
  • the variable optical payload unit that is, mapping M customer services into at least one time slot of the PTSG-n, and further mapping the PTSG-n to the variable optical payload unit, thereby implementing a flexible customized transmission solution based on the customer service transmission requirement.
  • the data plane is programmable, and can be flexibly mapped according to requirements to meet the mixed bearer of multiple rate services to meet the customized transmission requirements of the customer service.
  • the rate of the bearer container is flexible, the time slot is flexible, and the bandwidth utilization can be improved. It is also compatible with existing ODUflex frame structure and overhead monitoring mechanism.
  • the embodiment of the present invention further provides a multi-path service receiving method, which is an inverse process corresponding to the multi-path service transmission method, and after parsing the variable optical payload unit, determining according to the overhead area of the variable optical payload unit.
  • the demapping procedure demaps the M-way service from the variable optical payload unit according to the demapping procedure. Therefore, it can meet the multi-rate service hybrid bearer and the customized transmission requirements of the customer service.
  • FIG. 1 is a schematic structural diagram of an OTN frame in the background art of the present invention.
  • FIG. 2 is a schematic diagram of existing different service transmission schemes in the background art of the present invention.
  • FIG. 3 is a schematic structural diagram of hardware of an OTN device according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of an overview of a method for transmitting multiple services according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a PTSG-n according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a PTSG-n according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of mapping a PTSG-n into a payload area of an OPUflex according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of mapping a PTSG-n into a payload area of an OPUKm according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of various overhead information of an overhead area of an OPUflex according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of PSI[j] according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing an equivalent presentation manner of a mapping process of PTSG-n to OPUflex according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a specific process of mapping two services into an OPUflex according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of mapping multiple client services into a variable optical payload unit according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a new transmission scheme according to an embodiment of the present invention.
  • FIG. 15 is a flowchart of an overview of a method for receiving multiple services according to an embodiment of the present invention.
  • 16 is a schematic structural diagram of a multi-path service transmission apparatus according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a multi-path service receiving apparatus according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a multi-path service transmission device according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of a multi-path service receiving device according to an embodiment of the present invention.
  • the embodiment of the invention provides a method and a device for transmitting and receiving a multi-path service, which is used to solve the problem that the ODUflex can only be oriented to a single-channel service and cannot realize the customized mapping transmission of the multi-path service.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • FIG. 3 is a schematic structural diagram of hardware of an OTN (Optical Transport Network) device according to an embodiment of the present invention.
  • the OTN device includes a main control board 301, an OTN tributary board 302, a cross board 303, and an OTN circuit board 304.
  • the direction of transmission of the service can be from the customer side to the line side, and also from the line side to the customer side.
  • the service sent or received by the client side is called the client side service, and the service received or sent by the line side is called the wavelength division side service.
  • the business process flow in both directions is a reverse process. The following takes the customer side to line side direction as an example:
  • the main control board 301 is connected to the OTN tributary board 302, the cross board 303, and the OTN line through a bus or directly.
  • the boards 304 are connected to each other to control and manage the OTN tributary board 302, the cross board 303, and the OTN circuit board 304.
  • the OTN tributary board 302 completes the package mapping of the customer service.
  • the customer service includes a variety of service types, such as ATM (Asynchronous Transfer Mode) service, SDH (Synchronous Digital Hierarchy) service, Ethernet service, CPRI (Common Public Radio Interface) service, Storage business, etc.
  • the tributary board 302 is configured to receive client services from the client side, map the received client service package to the ODU signal, and add corresponding OTN management monitoring overhead.
  • the ODU signal may be a low-order ODU signal, such as ODU0, ODU1, ODU2, ODU3, ODUflex, etc.
  • the OTN management monitoring overhead may be an ODU overhead.
  • Different types of customer services are packaged into different ODU signals in different ways.
  • the cross board 303 completes the full cross connection of the tributary board and the circuit board to implement flexible cross scheduling of the ODU signal.
  • the cross board can realize the transmission of the ODU signal from any one of the tributary boards to any one of the circuit boards, or the OTU signal can be transmitted from any one of the circuit boards to any one of the circuit boards, and the customer signal can be transmitted from any one of the tributary boards. Transfer to any of the tributary boards.
  • the OTN circuit board 304 forms an OTU signal and transmits it to the line side.
  • the OTN board 304 may multiplex the low order multiplexed ODU signals into the higher order ODU signals before the ODU signals form the OTU signal.
  • the high-order ODU signal adds the corresponding OTN management monitoring overhead to form an OTU signal and transmits it to the optical transmission channel on the line side.
  • the high-order ODU signal can be ODU1, ODU2, ODU3, ODU4, etc.
  • the OTN management monitoring overhead can be OTU overhead.
  • the main control board 301 can execute a pre-configured program code to control the functions of any one or more of the OTN tributary board 302, the cross board 303, and the OTN circuit board 304.
  • the main hardware devices corresponding to the embodiments of the present invention are an OTN tributary board 302 and an OTN circuit board 304.
  • a method for transmitting multiple services includes:
  • Step 400 Acquire mapping transmission control information of the M-way service.
  • mapping transmission control information of each service carries the transmission requirement of the service, and M ⁇ 1.
  • the transmission requirement of each service includes the service type of the service, for example, the CBR service or the PKT service, and may also include parameters such as the traffic size of the service.
  • Step 410 Determine, according to the mapping of the M-way service, control information, and determine a mapping procedure for the M-way service.
  • the mapping procedure is used to map the M-way service to the variable optical payload unit through the programmable time slot group frame, and the mapping procedure includes at least the number of time slots included in the programmable time slot group frame, the time slot rate, and the programmable time slot.
  • the programmable time slot framing refers to a time slot set for satisfying the transmission requirements corresponding to the M services respectively.
  • PTSG-n is used to indicate Programmable Tributary Slot Group-n, where the programmable time slot framing can also be called Payload Slot Group-n (Payload Tributary Slot Group-n). ).
  • the embodiment of the present invention is mainly for the case of M ⁇ 2, that is, the scenario of multi-service transmission and reception.
  • M the scenario of multi-service transmission and reception.
  • the method provided by the embodiment of the present invention may also be used for service transmission and reception, but
  • the transmission and reception scenario for a service is not an application scenario that is mainly discussed in the embodiment of the present invention.
  • Step 420 Map the M-way service to the variable optical payload unit according to the mapping procedure.
  • step 410 when the mapping procedure for the M-way service is determined according to the mapping of the M-way service transmission control information, the following methods may be used:
  • the mapping transmission control information corresponding to each service is used to request transmission for the service, including various attribute information of the service, for example, the traffic size of the service, the service type, and the like.
  • the number of slots n and the slot rate included in the programmable slot group frame are determined according to the traffic size corresponding to the M-path service.
  • the traffic of the first service is 3 Gbit/s
  • the traffic of the second service is 2 Gbit/s. Therefore, the number of slots can be set to 5, and the slot rate is set to 1 Gbit/s.
  • the gap group is PTSG-5.
  • calculating a traffic size ratio for the M-way service according to the traffic size corresponding to the M-path For example, according to the traffic size and proportional relationship corresponding to the M paths, the number of slots n and the slot rate included in the programmable slot group frame are determined.
  • the traffic of the first service is 1 Gbit/s
  • the traffic of the second service is 1.8 Gbit/s.
  • the number of slots is set to 3
  • the slot rate is set. If it is 1 Gbit/s, it will cause a certain waste of resources for the second service.
  • the ratio of the traffic volume of the first service to the traffic of the second service can be calculated, which is 5:9.
  • the number of time slots is set to 14, the time slot rate is set to 0.2 Gbit/s, and the programmable time slot framing is PTSG-14, so that resources can be effectively utilized.
  • the number of time slots required for each service is determined according to the traffic size and the time slot rate corresponding to the M paths.
  • the traffic of the first service is 3 Gbit/s
  • the traffic of the second service is 2 Gbit/s
  • the time slot is 1 Gbit/s
  • the total number of time slots is 5.
  • the traffic of the first service is 1 Gbit/s
  • the traffic of the second service is 1.8 Gbit/s
  • the time slot is 0.2 Gbit/s
  • the total number of time slots is 14.
  • the frame structure of the programmable time slot framing is determined according to the number n of slots included in the programmable time slot framing.
  • variable optical payload unit is used as an example of OPUflex or OPUKm.
  • the frame structure of the programmable time slot framing is: the programmable time slot framing is composed of N1 code blocks whose preset code block granularity is s1 byte, and N1 is 3808/s1. With a common multiple of n, the rate of the programmable time slot framing is n times the time slot rate, and the variable optical payload unit OPUflex rate is 239/238*n times the time slot rate.
  • a programmable payload time slot group is constructed, which includes n time slots, which is equivalent to constructing an OPUflex containing n time slots. Therefore, the current PTSG-n time slot rate is Rts, and the OPUflex rate is 239/238*n*Rts.
  • N1 is the least common multiple of 3808/s1 and n.
  • s1 can be divisible by 3808.
  • 3808/s1 is rounded to a common multiple of n as the value of N1.
  • the s2 mentioned below is similar to s1 and will not be described again.
  • PTSG-n includes n time slots, from TS1 to TSn.
  • the preset code block granularity is 16B, and 16B represents 16 bytes.
  • other granularities may be considered, for example, 8 Bytes, 4 bytes, 66 bits, etc.
  • the code block granularity is set by an SDN (Software Defined Network) controller.
  • the following section details how to map PTSG-n into OPUflex, which is only a brief description here.
  • mapping procedure of the PTSG-n-based frame structure provided by the embodiment of the present invention may also be referred to as a programmable mapping procedure, and is compatible with the existing OPUflex frame structure and the overhead monitoring mechanism.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code block granularity s2 bytes.
  • the code block is composed of N2 being a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in OPUKm, the rate of programmable time slot framing is n times the time slot rate, variable light
  • the payload unit OPUKm rate is 239/238*n times the slot rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • PTSG-n includes n time slots, from TS1 to TSn, and FIG. 6 takes a preset code block granularity of 16B as an example.
  • mapping the M-way service to the variable optical payload unit according to the mapping procedure requires the following steps:
  • the M services are respectively mapped into at least one time slot of the programmable time slot group to obtain at least one programmable time slot group frame mapped into the M channel service.
  • the M-way service is respectively mapped into at least one time slot of the programmable time slot group according to the number of time slots required for each service, and specifically, for each service:
  • the programmable time slot group frame includes M sub-containers divided according to the M-way service
  • the i sub-containers correspond to the i-th service
  • the i-th sub-container includes n i slots occupied by the i- th service, where n 1 +n 2 +...+n i +...+n M ⁇ n.
  • the M-way services are respectively mapped into one or more time slots of the PTSG-n, that is, respectively mapped into the respective sub-containers composed of one or more time slots of the PTSG-n, which may be marked as PTSG-n. 1 , PTSG-n 2 , ..., PTSG-n M , wherein PTSG-n 1 , PTSG-n 2 , ..., PTSG-n M belong to a part of PTSG-n, respectively, by n 1 , n 2 , ..., n
  • the M time slots are composed, and the specific mapping overhead information of the M-way service is generated at the same time.
  • the M service is respectively mapped into at least one time slot of the programmable time slot group, and the following method may be adopted:
  • the service of the M-way service is a service of the packet service
  • the service of the K-type service type is a group service
  • the number of time slots required for the overall service is the K-type service type. The sum of the number of time slots occupied by the service of the service, K ⁇ 2.
  • the current service is mapped into a corresponding sub-container included in the programmable time slot group frame, wherein the programmable time slot group frame includes M * sub-containers divided according to the M * way service.
  • M * M-K+1
  • the i-th sub-container corresponds to the i-th service
  • the i-th sub-container contains n i slots occupied by the i- th service, where n 1 +n 2 +...+n i +...+n M* ⁇ n.
  • the service type of the first service is CBR service
  • the number of time slots required to be used is 2
  • the service type of the second service is CBR service
  • the number of time slots required to be used is 1
  • the third service The service type is PKT service, and the number of time slots required is 3
  • the service type of the fourth service is PKT service, and the number of time slots required is 2.
  • the first service can be mapped into PTSG-2 by GMP.
  • the second service can be mapped into PTSG-1 by GMP.
  • the transmission bandwidth utilization can be improved by aggregating packet services.
  • At least one programmable time slot group mapped into the M channel service is mapped to the payload area of the variable optical payload unit.
  • variable optical payload unit When the variable optical payload unit is OPUflex, it is executed for each programmable time slot framing:
  • the PTSG-n shown in FIG. 5 is mapped into the payload area of the OPUflex.
  • the specific mapping mode may adopt a bit synchronization mapping.
  • the N 16B code blocks of the PTSG-n are sequentially placed from left to right from top to bottom to the r rows of the OPUflex payload area, and each line of the OPUflex payload area.
  • the PTSG-n frame exactly matches the OPUflex frame payload area r line.
  • variable optical payload unit When the variable optical payload unit is OPUKm, it is performed for each payload slot framing:
  • the PTSG-n shown in FIG. 6 is mapped into the payload area of the OPUKm.
  • 238*m is the number of 16B code blocks included in one row of the OPUK m frame payload area.
  • the OPUK m frame contains m OPU instances (labeled OPU#1, OPU#2, ..., OPU#m), and m is variable.
  • the optical payload unit OPUKm contains the number of OPU instances, each OPU instance frame consists of 4 rows and 3808 column bytes, and each row of the OPU instance includes 238 16B code blocks.
  • the specific mapping mode may adopt bit synchronization mapping. As shown in FIG. 7, the N 16B code blocks of PTSG-n are sequentially placed into m OPU instances from left to right, and then placed into the OPUK m payload area from top to bottom. r line.
  • the overhead information required to transmit the M-way service is added in the overhead area of the variable optical payload unit.
  • FIG. 9 is various overhead information of the overhead area of the OPUflex.
  • the payload structure is added to indicate PSI[0], and the PSI[0] carries the payload type PT overhead value, which occupies 1 byte, and
  • the MFAS (Multiframe Alignment Signal) 0 corresponds to the PT cost value being the first preset value, and the first preset value is used to indicate that the variable optical payload unit carries the multi-path service.
  • the first preset position here may be the 4th line and the 15th line of the OPUflex frame, or the 4th line and the 15th line of the overhead area of each OPU instance.
  • PSI[j] includes an Occupation Indicator (OCCU) and a Service Identifier (CID).
  • OCU Occupation Indicator
  • CID Service Identifier
  • the OCCU occupies 1 bit, which is used to indicate whether the time slot (j-1) is occupied, 0 means idle, and 1 means occupied.
  • the CID which occupies 7 bits, is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the OMFI OPU Multi-Frame Identifie
  • OMFI OPU Multi-Frame Identifie
  • the added time slot overhead at the third preset position in the zone is the time slot overhead of the time slot (k+1) in the programmable time slot group frame, 0 ⁇ k ⁇ n-1, and the time slot overhead is used according to
  • the preset rule stores mapping overhead information.
  • the second preset position here is the fourth row and the 16th column of the OPUflex frame, or the fourth row and the 16th row of the overhead area of each OPU instance, the OMFI occupies 1 byte
  • the third preset position is the OPUflex frame.
  • mapping cost information for each service needs to be generated before adding the overhead information required for transmitting the M-way service in the overhead area of the variable optical payload unit.
  • mapping overhead information for each service is The path service is generated after being mapped into at least one time slot of the PTSG-n.
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service, or the time slot corresponding to the last time slot.
  • the overhead 1 ⁇ t ⁇ M
  • the t-th service is any one of the M-way services.
  • the mapping overhead information for the first service may be selected to store the time slot overhead corresponding to the time slot 1 or the time slot overhead corresponding to the time slot 3. It is assumed that the mapping overhead information of the first service is placed in the slot overhead corresponding to slot 1, and the slot overhead corresponding to slot 2 and slot 3 respectively remains.
  • FIG. 11 shows an equivalent presentation manner of the mapping process from PTSG-n to OPUflex.
  • This process can be equivalently considered as inserting one 16B overhead code block per 238 16B data code blocks, which is the first 16 bytes (overhead area) of each line of the ODUflex frame.
  • one PTSG-n frame corresponds to the r row occupying the OPUflex frame.
  • the rate of OPUflex is 239/238*n*Rts.
  • mapping the M-way service to the variable optical payload unit according to the mapping procedure obtaining a variable optical payload unit OPUflex or OPUKm mapped into the M-way service, adding a corresponding ODUflex overhead or ODUKm overhead, encapsulated into corresponding ODUflex frames or ODUKm frames.
  • mapping two services into OPUflex by using the method provided by the embodiment of the present invention is as follows:
  • the mapping transmission control information of the first service includes the first service being a fixed bit rate service, that is, the CBR service, and the traffic size is 3 Gbit/s, and the mapping transmission control information of the first service includes the first
  • the two-way service is a packet service, that is, a PKT service, and its traffic size is 2 Gbit/s.
  • the PTSG-5 can be constructed at a rate 5Gbit/s, including 5 time slots, each time slot rate is 1 Gbit/s; PTSG-5 frame structure is 1190 16B code blocks, of which 1190 is known by LCM (238, 5).
  • the first CBR service occupies 3 time slots; the second PKT service occupies 2 time slots.
  • the mapping overhead information of the two services needs to be generated and placed in the corresponding time slot overhead of the PTSG-5.
  • the first CBR service mapping overhead information is placed in the third time slot overhead of the PTSG-5, and the second channel PKT The service mapping overhead information is placed in the fifth time slot overhead of PTSG-5, and the other three time slot overheads of PTSG-5 are reserved.
  • the bit synchronization maps the PTSG-5 to the OPUflex payload area, and the 1190 16B code blocks correspond to the ODUflex frame payload area 5 lines, and the 1190 16B code blocks are sequentially placed to the corresponding positions of the ODUflex frame payload area, as shown in FIG.
  • the other time slot overhead information of the PTSG-5 is added to the OPUflex overhead zone, where the ODUflex rate is 239/238*5 Gbit/s.
  • the embodiment of the present invention provides a method for transmitting a multi-path service.
  • the variable optical payload unit is an OPUflex.
  • multiple client services are mapped into at least one time slot of the PTSG-n.
  • the PTSG-n is further mapped to the variable optical payload unit to realize a flexible customized transmission solution based on the customer service transmission requirements, so that the data plane has programmable capability, and can be customized according to the needs.
  • the live mapping meets the multi-rate service hybrid bearer to meet the customized transmission requirements of the customer service, and the bearer container has flexible and variable rate, flexible time slot division, can improve bandwidth utilization, and is compatible with the existing ODUflex frame structure and Overhead monitoring mechanism.
  • the last two paths are multi-service transmission schemes proposed by the present invention, corresponding to ODUflex and ODUKm, respectively.
  • the embodiment of the present invention further provides a method for receiving a multi-path service, including:
  • Step 1500 Parse the variable optical payload unit.
  • receiving an ODUflex frame extracting an ODUflex overhead, and parsing an OPUflex frame.
  • Step 1510 Extracting overhead information from an overhead area of the variable optical payload unit, and determining a demapping procedure for the variable optical payload unit according to the overhead information, where the demapping procedure is used to adjust the variable light from the programmable time slot.
  • the M-way service is demapped in the payload unit, and the programmable slot group frame refers to a set of time slots for satisfying the transmission requirements corresponding to the M services, respectively, M ⁇ 2.
  • Step 1520 Demap the M-way service from the payload area of the variable optical payload unit according to the demapping procedure.
  • the demapping procedure includes the number of time slots included in the programmable time slot framing, the frame structure of the programmable time slot framing, and the number of time slots occupied by each service in the M-way service.
  • the overhead information is extracted from the overhead area of the variable optical payload unit, and the demapping procedure for the variable optical payload unit is determined according to the overhead information, including the following two aspects:
  • the number of time slots n included in the programmable time slot group frame and the number of time slots occupied by each service are determined according to the overhead information, n ⁇ 1.
  • PSI[0] is extracted, and the PT cost value carried by the PSI[0] is identified, and the PT overhead value is a preset value, where the first preset value is used to indicate that the variable optical payload unit carries multiple services;
  • Extracting PSI[2] to PSI[n+1], identifying PSI[2] to PSI[n+1], PSI[2] to PSI[n+1] are used to indicate the allocation occupancy of each time slot, and determine
  • the variable optical payload unit carries M-way services, and each The number of time slots occupied by the road service, where PSI[j] corresponds to the time slot (j-1) in the programmable time slot group frame, which is used to indicate the allocation occupancy of the time slot j-1, 2 ⁇ j ⁇ n+ 1.
  • the PSI[j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, and the service indication field is used to indicate that the time slot (j-1) is occupied.
  • the frame structure of the programmable time slot framing is determined according to the number of time slots n included in the programmable time slot framing.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 code blocks with a preset code block granularity of s1 bytes, and N1 is 3808/s1 and A common multiple of n, the rate of programmable time slot framing is n times the time slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 code blocks whose preset code block granularity is s2 bytes, and N2 is 3808*m/ A common multiple of s2 and n, where m refers to the number of OPU instances included in OPUKm, and the rate of programmable time slot framing is n times the slot rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the unit carries multiple services, which are specifically three-way services.
  • the number of slots occupied by service 1 is 2
  • the number of slots occupied by service 2 is 1
  • the number of slots occupied by service 3 is 2.
  • step 1520 the M-way service is demapped from the payload area of the variable optical payload unit, including the following two steps:
  • At least one programmable time slot framing is demapped from the payload area of the variable optical payload unit;
  • the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service.
  • the first case is a first case:
  • variable optical payload unit is OPUflex
  • a programmable time slot framing is demapped from every r1 row of the payload area of the variable optical payload unit according to the frame structure of the programmable time slot framing corresponding to the OPUflex;
  • each row of the payload area of the OPUflex includes 3808/s1 code blocks with a preset code block granularity of s1 bytes.
  • the second case is a first case
  • variable optical payload unit is OPUKm
  • a programmable time slot framing is demapped from every r2 row of the payload area of the variable optical payload unit according to the frame structure of the programmable time slot framing corresponding to OPUKm;
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks whose preset code block granularity is s2 bytes.
  • the M-way service when the M-way service is demapped from each programmable time slot group, the time slot cost of each time slot needs to be extracted, and the M-channel services are respectively identified according to preset rules. Mapping overhead information;
  • the M sub-containers corresponding to the M-way services are respectively demapped from the current programmable time slot group frame, the i-th sub-container corresponds to the i-th service, and the i-th sub-container includes the i-th path n i time slots occupied by the service, where n 1 +n 2 +...+n i +...+n M ⁇ n;
  • the M-way service is demapped from the M sub-containers according to the mapping overhead information corresponding to the M sub-containers and the M-way services respectively corresponding to the M-path services.
  • the specific demapping method may use GMP, IMP, GFP, etc., for example, GMP may be used for fixed bit rate services, and IMP or GFP may be used for packet services.
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the slot overhead corresponding to the first slot in the t-th sub-container corresponding to the t-th traffic, or the slot overhead corresponding to the last slot. , 1 ⁇ t ⁇ M, the t-th service is any one of the M-way services.
  • the embodiment of the present invention further provides a multi-way service transmission device, which is repeated in the embodiment corresponding to the embodiment corresponding to FIG. The content will not be described again.
  • an embodiment of the present invention provides a multi-way service transmission apparatus, including:
  • the obtaining unit 1601 is configured to acquire mapping transmission control information of the M-way service, where the mapping transmission control information of each service carries the transmission requirement of the service, where M ⁇ 2;
  • the processing unit 1602 is configured to determine, according to the mapping and transmitting control information of the M-way service, a mapping procedure for the M-way service, where the mapping procedure is used to map the M-way service to a programmable time slot group frame to a variable optical payload unit, where the programmable time slot framing refers to a time slot set for satisfying a transmission requirement corresponding to the M services respectively;
  • mapping the M-way traffic to the variable optical payload unit according to the mapping procedure.
  • the transmission requirement of each service includes the traffic required by the service
  • the mapping procedure includes at least a number of time slots included in the programmable time slot framing, a time slot rate, a frame structure of the programmable time slot framing, and a required occupation of each service in the M-way service Number of time slots;
  • the processing unit 1602 is configured to: when the mapping procedure for the M-way service is determined according to the mapping and transmitting control information of the M-way service, the processing unit 1602 is configured to:
  • the processing unit 1602 is configured to determine, according to the traffic size corresponding to the M traffic, respectively, the number of slots n and the slot rate included in the payload slot group frame. :
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, the rate of the programmable time slot framing is n times the time slot rate, and the variable optical payload unit OPUflex rate is 239/ 238*n times the slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code blocks.
  • the code block is composed of s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in the OPUKm, and the rate of the programmable time slot framing is n times time slot. Rate, the variable optical payload unit OPUKm rate is 239/238*n times the slot rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the processing unit 1602 when the M-way service is mapped to the variable optical payload unit according to the mapping procedure, the processing unit 1602 is configured to:
  • mapping according to a frame structure of the programmable time slot framing, the at least one programmable time slot group mapped into the M path service to a payload area of the variable optical payload unit;
  • the processing Unit 1602 when the M-way service is separately mapped into at least one time slot of the programmable time slot group according to the number of time slots required for each service, the processing Unit 1602 for:
  • the transmission requirement of each service includes the service type of the service
  • the processing unit 1602 is configured to:
  • the M-way service includes a service of the K-channel service type
  • the service of the K-type service type is a group service
  • the number of time slots required for the overall service of the one-way service is
  • the K-way service type is the sum of the number of time slots occupied by the services of the packet service, K ⁇ 2;
  • the at least one payload slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable slot group frame.
  • the processing unit 1602 is configured to:
  • variable optical payload unit When the variable optical payload unit is OPUflex, it is executed for each programmable time slot framing:
  • the line contains 3808/s 1 code block with a preset code block granularity of s1 bytes.
  • the at least one programmable time slot group mapped into the M-way service is mapped to the variable optical network according to a frame structure of the programmable time slot framing
  • the processing unit 1602 is configured to:
  • variable optical payload unit When the variable optical payload unit is OPUKm, it is executed for each payload slot framing:
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks with a preset code block granularity of s2 bytes.
  • the processing unit 1602 before the cost information of the M optical path is added to the overhead area of the variable optical payload unit, the processing unit 1602 is further configured to:
  • the processing unit 1602 is configured to: when the cost information of the M-way service is added to the overhead area of the variable optical payload unit, the processing unit 1602 is configured to:
  • the time slot overhead of the time slot (k+1) in the programmable time slot group frame, 0 ⁇ k ⁇ n-1, the time slot overhead is used to store the mapping overhead information according to a preset rule.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service In the time slot overhead corresponding to the overhead or the last time slot, 1 ⁇ t ⁇ M, and the t-th traffic is any one of the M-path services.
  • the embodiment of the present invention further provides a multi-channel service receiving device, which is repeated in the embodiment corresponding to the embodiment corresponding to FIG. The content will not be described again.
  • an embodiment of the present invention provides a multi-channel service receiving apparatus, including:
  • the parsing unit 1701 is configured to parse the variable optical payload unit
  • the processing unit 1702 is configured to extract, from the overhead area of the variable optical payload unit, overhead information, and determine, according to the overhead information, a demapping procedure for the variable optical payload unit, where the demapping procedure is used Dissolving, by the programmable time slot framing, the M-way service from the variable optical payload unit, where the programmable time slot framing is used to meet the transmission requirements corresponding to the M services, respectively, M ⁇ 2;
  • the demapping procedure includes a number of time slots included in the programmable time slot framing, a frame structure of the programmable time slot framing, and each of the M-way services The number of time slots occupied by the road service;
  • the processing unit 1702 is configured to:
  • the processing unit 1702 is configured to: when the number of the slots included in the programmable slot group frame and the number of slots occupied by each service are determined according to the cost information,
  • Extracting PSI[2] to PSI[n+1], identifying the PSI[2] to PSI[n+1], the PSI[2] to PSI[n+1] are used to indicate the allocation of each time slot Determining, determining, by the variable optical payload unit, an M-way service, and a number of time slots occupied by each service, where PSI[j] corresponds to a time slot in the programmable time slot group frame (j-1) ), for indicating the allocation occupation of the time slot j-1, 2 ⁇ j ⁇ n+1.
  • the PSI [j] includes an occupation indication field and a service indication field, where the occupation indication field is used to indicate whether the time slot (j-1) is occupied, the service indication The field is used to indicate the service identifier of the service carried by the time slot (j-1) when the time slot (j-1) is occupied.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUflex, the programmable time slot framing consists of N1 preset code blocks.
  • the code block is composed of s1 bytes, N1 is a common multiple of 3808/s1 and n, and the rate of the programmable time slot framing is n times the time slot rate.
  • N1 is the least common multiple of 3808/s1 and n.
  • the frame structure of the programmable time slot framing is: when the variable optical payload unit is OPUKm, the programmable time slot framing consists of N2 preset code blocks.
  • the code block is composed of s2 bytes, N2 is a common multiple of 3808*m/s2 and n, and m is the number of OPU instances included in the OPUKm, and the rate of the programmable time slot framing is n times time slot. rate.
  • N2 is the least common multiple of 3808*m/s2 and n.
  • the processing unit 1702 when the M-way service is demapped from the payload area of the variable optical payload unit according to the demapping procedure, the processing unit 1702 is configured to:
  • the M-way service is demapped from each programmable time slot group according to the number of time slots occupied by each service.
  • the processing unit 1702 is configured to:
  • variable optical payload unit is OPUflex
  • the frame structure of the programmable slot group corresponding to the OPUflex one map is demapped from each r1 row of the payload area of the variable optical payload unit.
  • each row of the payload area of the OPUflex includes 3808/s1 code blocks whose preset code block granularity is s1 bytes.
  • the processing unit 1702 is configured to:
  • variable optical payload unit is OPUKm
  • the frame structure of the programmable slot group corresponding to the OPUKm one map is demapped from each r2 row of the payload area of the variable optical payload unit.
  • each row of the OPUKm payload area contains 3808*m/s2 code blocks whose preset code block granularity is s2 bytes.
  • the processing unit 1702 is further configured to:
  • the processing unit 1702 is configured to: when: the M-way service is demapped from each of the programmable time slot groups according to the number of time slots occupied by each service, the processing unit 1702 is configured to:
  • M sub-containers corresponding to the M-way services from the current programmable time slot group according to the number of time slots occupied by each service, the i-th sub-container corresponding to the i-th service, the i-th sub-container Include n i time slots occupied by the i- th service, where n 1 +n 2 +...+n i +...+n M ⁇ n;
  • the preset rule is: the mapping overhead information for the t-th traffic is stored in the time slot corresponding to the first time slot in the t-th sub-container corresponding to the t-th service In the time slot overhead corresponding to the overhead or the last time slot, 1 ⁇ t ⁇ M, and the t-th traffic is any one of the M-path services.
  • an embodiment of the present invention provides a multi-path service transmission device, for example, an OTN device, where the device includes:
  • a memory 1802 configured to store an instruction
  • the processor 1803 is respectively connected to the transceiver and the memory, and is configured to perform the following operations according to the instructions stored in the memory:
  • mapping transmission control information of the M-way service by the transceiver and mapping transmission control information of each service carries the transmission requirement of the service, where M ⁇ 2;
  • mapping procedure for the M-way service, where the mapping procedure is used to map the M-way service to a variable optical payload unit by using a programmable time slot group frame
  • the programmable time slot framing refers to a time slot set for satisfying the transmission requirements corresponding to the M services respectively;
  • mapping the M-way traffic to the variable optical payload unit according to the mapping procedure.
  • an embodiment of the present invention provides a multi-channel service receiving apparatus, including:
  • a memory 1902 configured to store an instruction
  • the processor 1903 is respectively connected to the transceiver and the memory, and is configured to perform the following operations according to the instructions stored in the memory:
  • connection manner between the parts shown in FIG. 18 and FIG. 19 is only one possible example, and the transceiver and the memory are both connected to the processor, and there is no connection between the transceiver and the memory. Or, it can be other possible connections.
  • the memory in the above embodiment is used to store program code executed by the processor, which may be a volatile memory, such as a random-access memory (RAM).
  • the memory may also be a non-volatile memory such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid state hard disk (solid).
  • ROM read-only memory
  • HDD hard disk drive
  • solid state hard disk solid
  • a -state drive (SSD), or memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the memory can be a combination of the above memories.
  • the processor in the above embodiment may be a central processing unit (CPU).
  • CPU central processing unit
  • FIG. 18 and FIG. 19 may be the same OTN device having multi-channel service transmission and reception functions.
  • the embodiment of the present invention provides a multi-path service transmission method, which acquires an M-way service. Mapping the transmission control information, determining the mapping procedure of the M-way service, and mapping the M-way service to the variable optical payload unit according to the mapping procedure, that is, mapping the M customer services into at least one time slot of the PTSG-n, and then mapping the PTSG- n Further mapping to the variable optical payload unit, enabling flexible and customized delivery solutions based on customer service delivery requirements, enabling the data plane to have programmable capabilities, flexibly mapping as needed, meeting multiple rate service hybrid bearers, and satisfying customer service customization.
  • the transmission requirement is flexible, and the rate of the bearer container is flexible, the time slot is flexible, the bandwidth utilization can be improved, and the existing ODUflex frame structure and the overhead monitoring mechanism are compatible.
  • the embodiment of the present invention further provides a multi-path service receiving method, which is an inverse process corresponding to the multi-path service transmission method, and after parsing the variable optical payload unit, determining according to the overhead area of the variable optical payload unit.
  • the demapping procedure demaps the M-way service from the variable optical payload unit according to the demapping procedure. Therefore, it can meet the multi-rate service hybrid bearer and the customized transmission requirements of the customer service.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the computer readable memory is stored in the computer readable memory.
  • the instructions in the production result include an article of manufacture of the instruction device that implements the functions specified in one or more blocks of the flowchart or in a flow or block of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种多路业务传送、接收方法及装置，该方法包括：获取M路业务的映射传送控制信息，确定M路业务的映射规程，以及根据映射规程将M路业务映射到可变光净荷单元，因此，能够实现基于客户业务传送需求灵活定制传送解决方案，使数据平面具备可编程能力。

Description

一种多路业务传送、接收方法及装置 技术领域
本发明涉及光通信技术领域，特别是涉及一种多路业务传送、接收方法及装置。
背景技术
当前OTN(Optical transport network，光传送网)作为传送网的核心技术，包括电层和光层的技术规范，具备丰富的OAM(Operation Administration and Maintenance，操作、管理与维护)、强大的TCM(Tandem Connection Monitoring，串联连接监视)能力和带外FEC(Forward Error Correction，前向错误纠正)能力，能够实现大容量业务的灵活调度和管理。
在电处理层，OTN技术定义了一种标准的封装结构，用于映射各种客户业务，能够实现对客户信号的管理和监控。OTN帧结构如图1所示，OTN帧为4×4080个字节的结构，即4行×4080列，OTN帧结构包含定帧区域、OTU(Optical Channel Transport Unit，光通道传输单元)OH(Overhead，开销)、ODU(Optical Channel Data Unit，光通道数据单元)OH、OPU(Optical Channel Payload Unit，光通道净荷单元)OH、OPU净荷区域(Payload Area)、FEC区域。其中，头部16列为开销字节，尾部256列为FEC校验字节，中间3808列为净荷。
OPUk用来适配客户信号，包括OPU净荷区域和OPU OH，k代表OPU的速率等级。当k＝1，2，3，4时，分别对应2.5G，10G，40G，100G的固定速率级别，存在1.25Gbit/s和2.5Gbit/s两种固定时隙粒度，通过净荷类型开销PT区分，当PT＝0x21，为1.25G时隙；当PT＝0x20，为2.5G时隙。当k＝flex时，即OPUflex，其对应任意速率级别，没有时隙，仅承载单路业务。当k＝Cn，也即OPUCn，其对应n倍100G的速率级别，仅有一种固定时隙，即5G，其净荷类型PT＝0x22。ODUk是用来支持OPUk的信息结构，它由OPUk的信息和ODUk OH组成，ODUk的容量由k区分。OTUk由ODUk、FEC区域和OTUk OH组成。随着业务 流量的增长以及多样化需求，传送网络在带宽增长的同时已逐渐从固定管道向弹性管道演进，例如低阶的ODUflex承载容器或者n倍100G的OTUCn。特别地，对于n倍100G速率的OTUCn，其帧结构由n个OTN帧(不包含FEC区)组成，其对应的时隙粒度为5Gbit/s。
现有技术中，传统的ODUflex仅仅是面向单路业务，采取固化的映射方式实现单路业务承载传送。
具体的，参阅图2所示，对于CBR(constant bit rate，固定比特速率)业务，通过BMP(Bit Synchronous Mapping Procedure，比特同步映射规程)映射到ODUflex，然后通过高阶ODUk或者ODUCn传送。对于分组(packet，PKT)业务，当小于等于100G时，通过GFP(Generic Frame Procedure，通用成帧规程)映射到ODUflex，然后通过高阶ODUk或者ODUCn传送；当大于100G时，通过IMP(Idle Mapping Procedure，空闲映射处理规程)映射到ODUflex，然后通过高阶ODUk或者ODUCn传送。
发明内容
本发明实施例提供一种多路业务传送、接收方法及装置，用以解决ODUflex只能面向单路业务，无法实现多路业务的定制化映射传送的问题。
本发明实施例提供的具体技术方案如下：
第一方面，一种多路业务传送方法，包括：
获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
在一种可选的实现方式中，每路业务的传送需求包含该路业务所需的流 量大小；
所述映射规程至少包括所述可编程时隙组帧包含的时隙数量、时隙速率、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务所需占用的时隙数量；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，包括：
根据所述M路业务分别对应的流量大小确定所述可编程时隙组帧包含的时隙数量n和时隙速率，n≥1；
根据所述可编程时隙组帧包含的时隙数量n，确定所述可编程时隙组帧的帧结构；
根据所述M路业务分别对应的流量大小和所述时隙速率确定每路业务所需占用的时隙数量。
因此，采用本发明实施例提供的方法，使数据平面具备可编程能力，且可以根据业务需要灵活划分时隙。
在一种可选的实现方式中，根据所述M路业务分别对应的流量大小确定所述净荷时隙组帧包含的时隙数量n和时隙速率，包括：
根据所述M路业务分别对应的流量大小计算针对所述M路业务的流量大小比例关系；
根据所述M路业务分别对应的流量大小和所述比例关系，确定所述可编程时隙组帧包含的时隙数量n和时隙速率。
因此，采用本发明实施例提供的方法能够有效地利用系统带宽。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变 光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述映射规程，映射所述M路业务到所述可变光净荷单元，包括：
根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，获得至少一个映射入所述M路业务的可编程时隙组帧；
根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息。
在一种可选的实现方式中，根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，包括：
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据所述M路业务划分的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
因此，采用本发明实施例提供的方法能够灵活地将各路业务映射入可编程时隙组帧。
在一种可选的实现方式中，每路业务的传送需求包含该路业务的业务类型；
将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，包括：
若所述M路业务中包含K路业务类型为分组业务的业务，则将所述K路业务类型为分组业务的业务汇聚为一路整体业务，所述一路整体业务所需占用的时隙数量为所述K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2；
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据M*路业务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
因此，采用本发明实施例提供的方法根据业务类型灵活调整占用时隙，能够提高带宽利用率。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的净荷时隙组帧映射到所述可变光净荷单元的净荷区，包括：
所述可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
根据所述OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N1个预设码块粒度为s1字节的码块依次映射到所述OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区，包括：
所述可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
根据所述OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到所述OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含 3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息之前，还包括：
生成针对每路业务的映射开销信息；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息，包括：
在所述可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，所述PSI[0]携带净荷类型PT开销值，与复帧对齐信号MFAS＝0相对应，其中，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；添加PSI[1]，所述PSI[1]携带n，与MFAS＝1相对应；添加PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1；
在所述可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元复帧指示OMFI，所述OMFI的取值为0～n-1，当OMFI的取值为k时，表明在所述可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为所述可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，所述时隙开销用于按照预设规则存放所述映射开销信息。
因此，采用本发明实施例提供的方法能够兼容现有的帧结构及开销监控机制。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销 或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
第二方面，一种多路业务接收方法，包括：
解析出可变光净荷单元；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合，M≥2；
根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
在一种可选的实现方式中，所述解映射规程包括所述可编程时隙组帧包含的时隙数量、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务占用的时隙数量；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，包括：
根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，n≥1；
根据所述可编程时隙组帧包含的时隙数量n确定所述可编程时隙组帧的帧结构。
在一种可选的实现方式中，根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，包括：
在所述可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别所述PSI[0]携带的PT开销值，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；
提取PSI[1]，识别所述PSI[1]携带的n，n用于指示所述可编程时隙组帧包含的时隙数量；
提取PSI[2]至PSI[n+1]，识别所述PSI[2]至PSI[n+1]，所述PSI[2]至 PSI[n+1]用于指示每个时隙的分配占用情况，确定所述可变光净荷单元承载M路业务，以及每路业务占用的时隙数量，其中，PSI[j]对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务，包括：
根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧，包括：
所述可变光净荷单元为OPUflex时，根据所述OPUflex对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r1行解映射出一个可 编程时隙组帧；
其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧，包括：
所述可变光净荷单元为OPUKm时，根据所述OPUKm对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，从所述可变光净荷单元的开销区提取出开销信息，还包括：
提取每个时隙的时隙开销，根据预设规则识别出所述M路业务分别对应的映射开销信息；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出所述M路业务，包括：
针对每个可编程时隙组帧，执行：
根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出所述M路业务分别对应的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
根据所述M路业务分别对应的M个子容器以及所述M路业务分别对应的映射开销信息，从所述M个子容器中分别解映射出M路业务。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
第三方面，一种多路业务传送装置，包括：
获取单元，用于获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
处理单元，用于根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
以及根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
在一种可选的实现方式中，每路业务的传送需求包含该路业务所需的流量大小；
所述映射规程至少包括所述可编程时隙组帧包含的时隙数量、时隙速率、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务所需占用的时隙数量；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程时，所述处理单元，用于：
根据所述M路业务分别对应的流量大小确定所述可编程时隙组帧包含的时隙数量n和时隙速率；
根据所述可编程时隙组帧包含的时隙数量n，确定所述可编程时隙组帧的帧结构；
根据所述M路业务分别对应的流量大小和所述时隙速率确定每路业务所需占用的时隙数量。
在一种可选的实现方式中，根据所述M路业务分别对应的流量大小确定所述净荷时隙组帧包含的时隙数量n和时隙速率时，所述处理单元，用于：
根据所述M路业务分别对应的流量大小计算针对所述M路业务的流量大小比例关系；
根据所述M路业务分别对应的流量大小和所述比例关系，确定所述可编程时隙组帧包含的时隙数量n和时隙速率。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述映射规程，映射所述M路业务到所述可变光净荷单元时，所述处理单元，用于：
根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，获得至少一个映射入所述M路业务的可编程时隙组帧；
根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息。
在一种可选的实现方式中，根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元，用于：
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据所述M路业务划分的M个子容器，第i个子容器对应第i路业务，所述第i个子容器 包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
在一种可选的实现方式中，每路业务的传送需求包含该路业务的业务类型；
将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元，用于：
若所述M路业务中包含K路业务类型为分组业务的业务，则将所述K路业务类型为分组业务的业务汇聚为一路整体业务，所述一路整体业务所需占用的时隙数量为所述K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2；
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据M*路业务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的净荷时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元，用于：
所述可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
根据所述OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N1个预设码块粒度为s1字节的码块依次映射到所述OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元，用于：
所述可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
根据所述OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到所述OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息之前，所述处理单元，还用于：
生成针对每路业务的映射开销信息；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息时，所述处理单元，用于：
在所述可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，所述PSI[0]携带净荷类型PT开销值，与复帧对齐信号MFAS＝0相对应，其中，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；添加PSI[1]，所述PSI[1]携带n，与MFAS＝1相对应；添加PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1；
在所述可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元复帧指示OMFI，所述OMFI的取值为0～n-1，当OMFI的取值为k时，表明在所述可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为所述可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，所述时隙开销用于按照预设规则存放所述映射开销信息。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销 信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
第四方面，一种多路业务接收装置，包括：
解析单元，用于解析出可变光净荷单元；
处理单元，用于从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合，M≥2；
以及根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
在一种可选的实现方式中，所述解映射规程包括所述可编程时隙组帧包含的时隙数量、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务占用的时隙数量；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程时，所述处理单元，用于：
根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，n≥1；
根据所述可编程时隙组帧包含的时隙数量n确定所述可编程时隙组帧的帧结构。
在一种可选的实现方式中，根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量时，所述处理单元，用于：
在所述可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别所述PSI[0]携带的PT开销值，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；
提取PSI[1]，识别所述PSI[1]携带的n，n用于指示所述可编程时隙组帧 包含的时隙数量；
提取PSI[2]至PSI[n+1]，识别所述PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]用于指示每个时隙的分配占用情况，确定所述可变光净荷单元承载M路业务，以及每路业务占用的时隙数量，其中，PSI[j]对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务时，所述处理单元，用于：
根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单 元，用于：
所述可变光净荷单元为OPUflex时，根据所述OPUflex对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r1行解映射出一个可编程时隙组帧；
其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单元，用于：
所述可变光净荷单元为OPUKm时，根据所述OPUKm对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，从所述可变光净荷单元的开销区提取出开销信息时，所述处理单元，还用于：
提取每个时隙的时隙开销，根据预设规则识别出所述M路业务分别对应的映射开销信息；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出所述M路业务时，所述处理单元，用于：
针对每个可编程时隙组帧，执行：
根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出所述M路业务分别对应的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
根据所述M路业务分别对应的M个子容器以及所述M路业务分别对应的映射开销信息，从所述M个子容器中分别解映射出M路业务。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
第五方面，本发明实施例提供一种多路业务传送设备，包括：
收发器；
存储器，用于存储指令；
处理器，与所述收发器和所述存储器分别相连，用于根据所述存储器存储的指令，执行以下操作：
通过收发器获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
以及根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
第六方面，本发明实施例提供一种多路业务接收设备，包括：
收发器；
存储器，用于存储指令；
处理器，与所述收发器和所述存储器分别相连，用于根据所述存储器存储的指令，执行以下操作：
解析出可变光净荷单元；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧用于满足所述M个业务分别对应的传送需求，M≥2；
以及根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所 述M路业务。
本发明实施例的有益效果如下：本发明实施例提供一种多路业务传送方法，获取M路业务的映射传送控制信息，确定M路业务的映射规程，以及根据映射规程将M路业务映射到可变光净荷单元，即将M个客户业务映射入PTSG-n的至少一个时隙，再将PTSG-n进一步映射到可变光净荷单元，实现基于客户业务传送需求灵活定制传送解决方案，使数据平面具备可编程能力，可根据需要灵活映射，满足多种速率业务混合承载，满足客户业务的定制化传送需求，且承载容器速率大小灵活可变，时隙划分灵活，能够提高带宽利用率，还能兼容现有的ODUflex帧结构及开销监控机制。此外，本发明实施例还提供一种多路业务接收方法，是与多路业务传送方法对应的逆过程，在解析出可变光净荷单元后，根据可变光净荷单元的开销区确定解映射规程，根据解映射规程从可变光净荷单元中解映射出M路业务。因此，能够满足多种速率业务混合承载，以及客户业务的定制化传送需求。
附图说明
图1为本发明背景技术中OTN帧结构示意图；
图2为本发明背景技术中现有不同业务传送方案的示意图；
图3为本发明实施例中OTN设备的硬件结构示意图；
图4为本发明实施例中多路业务传送方法的概述流程图；
图5为本发明实施例中PTSG-n的结构示意图之一；
图6为本发明实施例中PTSG-n的结构示意图之一；
图7为本发明实施例中将PTSG-n映射入OPUflex的净荷区的示意图；
图8为本发明实施例中将PTSG-n映射入OPUKm的净荷区的示意图；
图9为本发明实施例中OPUflex的开销区的各种开销信息的示意图；
图10为本发明实施例中PSI[j]的具体结构示意图；
图11为本发明实施例中PTSG-n到OPUflex的映射过程等价展现方式示意图；
图12为本发明实施例中将两路业务映射入OPUflex的具体过程示意图；
图13为本发明实施例中将多个客户业务映射入可变光净荷单元的示意图；
图14为本发明实施例中新增传送方案的示意图；
图15为本发明实施例中多路业务接收方法的概述流程图；
图16为本发明实施例中多路业务传送装置的结构示意图；
图17为本发明实施例中多路业务接收装置的结构示意图；
图18为本发明实施例中多路业务传送设备的结构示意图；
图19为本发明实施例中多路业务接收设备的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，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。
本发明实施例提供一种多路业务传送、接收方法及装置，用以解决ODUflex只能面向单路业务，无法实现多路业务的定制化映射传送的问题。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
图3为本发明实施例提供的一种OTN(Optical Transport Network，光传送网)设备的硬件结构示意图。如图3所示，OTN设备包括主控板301，OTN支路板302，交叉板303和OTN线路板304。业务的传输方向可以从客户侧到线路侧，还可以从线路侧到客户侧。客户侧发送或接收的业务称为客户侧业务，线路侧接收或发送的业务称为波分侧业务。两个方向上的业务处理流程互为逆向过程。下面以客户侧到线路侧方向为例进行说明：
主控板301通过总线或直接与OTN支路板302、交叉板303、OTN线路 板304相连，对OTN支路板302、交叉板303、OTN线路板304起控制管理的功能。
OTN支路板302，完成客户业务的封装映射。客户业务包括多种业务类型，例如ATM(Asynchronous Transfer Mode，异步传输模式)业务、SDH(Synchronous Digital Hierarchy，同步数字体系)业务、以太业务、CPRI(Common Public Radio Interface，通用公共无线电接口)业务、存储业务等。具体地，支路板302用于接收来自客户侧的客户业务，将接收到的客户业务封装映射到ODU信号并添加相应的OTN管理监控开销。在OTN支路板302上，ODU信号可以为低阶ODU信号，例如ODU0、ODU1、ODU2、ODU3、ODUflex等，OTN管理监控开销可以为ODU开销。针对不同类型的客户业务，采用不同的方式封装映射到不同的ODU信号中。
交叉板303，完成支路板和线路板的全交叉连接，实现ODU信号的灵活交叉调度。具体地，交叉板可以实现将ODU信号从任意一个支路板传输到任意一个线路板，或者将OTU信号从任意一个线路板传输到任意一个线路板，还可以将客户信号从任意一个支路板传输到任意一个支路板。
OTN线路板304，将ODU信号形成OTU信号并发送到线路侧。在ODU信号形成OTU信号之前，OTN线路板304可以将低阶多路ODU信号复用到高阶ODU信号中。然后高阶ODU信号添加相应OTN管理监控开销形成OTU信号并发送到线路侧的光传输通道中。在OTN线路板上，高阶ODU信号信号可以为ODU1、ODU2、ODU3、ODU4等，OTN管理监控开销可以为OTU开销。
主控板301可以执行预先配置的程序代码，控制OTN支路板302、交叉板303、OTN线路板304中的任意一种或多种单板本发明实施例的功能。其中，本发明实施例对应的主要硬件设备为OTN支路板302和OTN线路板304。
下面结合附图对本发明优选的实施方式进行详细说明。
参阅图4所示，一种多路业务传送方法，包括：
步骤400：获取M路业务的映射传送控制信息。
其中，每路业务的映射传送控制信息携带该路业务的传送需求，M≥1。
这里每路业务的传送需求包含该路业务的业务类型，例如，CBR业务或PKT业务，还可以包含该路业务的流量大小等参数。
步骤410：根据M路业务的映射传送控制信息，确定针对M路业务的映射规程。
其中，映射规程用于使M路业务通过可编程时隙组帧映射到可变光净荷单元，映射规程至少包括可编程时隙组帧包含的时隙数量、时隙速率、可编程时隙组帧的帧结构、以及M路业务中每路业务所需占用的时隙数量。可编程时隙组帧是指用于满足M个业务分别对应的传送需求的时隙集合。
本申请文件中用PTSG-n来表示可编程时隙组帧(Programmable Tributary Slot Group–n)，其中，可编程时隙组帧又可名为净荷时隙组帧(Payload Tributary Slot Group–n)。
其中，本发明实施例中主要针对M≥2的情况进行讨论，即多业务传送和接收的场景，当然，在M＝1时也可采用本发明实施例提供的方法进行业务传送和接收，只是针对一个业务的传送接收场景不是本发明实施例重点讨论的应用场景。
步骤420：根据映射规程，映射M路业务到可变光净荷单元。
针对步骤410，根据M路业务的映射传送控制信息，确定针对M路业务的映射规程时，可以采用但不限于以下方法：
其中，每路业务对应的映射传送控制信息用于请求针对该路业务的传输，包括该路业务的各种属性信息，例如，该路业务的流量大小，业务类型等。
首先，根据M路业务分别对应的流量大小确定可编程时隙组帧包含的时隙数量n和时隙速率。
例1，第一路业务的流量大小为3Gbit/s，第二路业务的流量大小为2Gbit/s，因此，可以将时隙数量设为5，时隙速率设为1Gbit/s，可编程时隙组帧为PTSG-5。
可选地，根据M路分别对应的流量大小计算针对M路业务的流量大小比 例关系，根据M路分别对应的流量大小和比例关系，确定可编程时隙组帧包含的时隙数量n和时隙速率。
例2，第一路业务的流量大小为1Gbit/s，第二路业务的流量大小为1.8Gbit/s，如果此时还采用与上述相似的方案，时隙数量设为3，时隙速率设为1Gbit/s，则对于第二路业务来说会造成一定的资源浪费，此时可计算得到第一路业务的流量大小与第二路业务的流量大小的比例关系，为5:9，将时隙数量设为14，时隙速率设为0.2Gbit/s，可编程时隙组帧为PTSG-14，这样便能够使资源得到有效地利用。
须知，上述方法仅作为可选的方案，在确定时隙数量n和时隙速率时，需要综合考虑多种因素。
然后，根据M路分别对应的流量大小和时隙速率确定每路业务所需占用的时隙数量。
针对上述例1，第一路业务的流量大小为3Gbit/s，第二路业务的流量大小为2Gbit/s，时隙速率为1Gbit/s，总时隙数量为5，则可得第一路业务所需占用的时隙数量为3/1＝3，第二路业务所需占用的时隙数量为2/1＝2。
针对上述例2，第一路业务的流量大小为1Gbit/s，第二路业务的流量大小为1.8Gbit/s，时隙速率为0.2Gbit/s，总时隙数量为14，则可得第一路业务所需占用的时隙数量为1/0.2＝5，第二路业务所需占用的时隙数量为1.8/0.2＝9。
进一步地，根据可编程时隙组帧包含的时隙数量n，确定可编程时隙组帧的帧结构。
本发明实施例中仅以可变光净荷单元为OPUflex或OPUKm为例进行说明，本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改，则本发明也意图包含这些变更和修改在内。
针对可变光净荷单元为OPUflex时，可编程时隙组帧的帧结构为：可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，可编程时隙组帧的速率为n倍时隙速率，可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
其中，构建了可编程净荷时隙组，其包含n个时隙，等价于构建了包含n个时隙的OPUflex，因此，当前PTSG-n的时隙速率为Rts，则OPUflex的速率为239/238*n*Rts。
可选地，N1为3808/s1与n的最小公倍数。
须知，一般地，s1能够被3808整除，当s1不能被3808整除时，在确定N1时，3808/s1取整与n的公倍数作为N1的值。下文提到的s2与s1类似，不再赘述。
参阅图5所示，PTSG-n包含n个时隙，从TS1～TSn，图5中以预设码块粒度为16B为例，16B代表16字节，此外也可考虑其他粒度，例如，8字节，4字节，66比特等。码块粒度通过SDN(Software Defined Network,软件定义网络)控制器进行设置。N＝LCM(3808/16，n)＝LCM(238，n)，其中，3808为OPU净荷区每行包含的字节数，如图1所示，净荷区的字节数为3824-16＝3808。每个竖线分隔的238×16B放入对应净荷区的一行，共可放入r＝N/238行。下文将详细介绍如何将PTSG-n映射入OPUflex，此处仅为简单说明。
因此，本发明实施例提供的基于PTSG-n的帧结构的映射规程，也可称为可编程映射规程，能够兼容现有的OPUflex帧结构及开销监控机制。
针对可变光净荷单元为OPUKm时，可编程时隙组帧的帧结构为：可变光净荷单元为OPUKm时，可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指OPUKm中包含OPU实例(OPU instance)的数量，可编程时隙组帧的速率为n倍时隙速率，可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
可选地，N2为3808*m/s2与n的最小公倍数。
参阅图6所述，PTSG-n包含n个时隙，从TS1～TSn，图6中以预设码块粒度为16B为例。N＝LCM(3808*m/16，n)＝LCM(238*m，n)，其中，3808*m为OPUKm净荷区每行包含的字节数，每个竖线分隔的238*m*16B放入对应净荷区的一行，共可放入r＝N/(238*m)行。下文将详细介绍如何将PTSG-n 映射入OPUKm，此处仅作简单说明。
针对步骤420，根据映射规程，映射M路业务到可变光净荷单元，需要包括以下几个步骤：
第一，根据每路业务所需占用的时隙数量，将M路业务分别映射入可编程时隙组帧的至少一个时隙中，获得至少一个映射入M路业务的可编程时隙组帧。
可选地，根据每路业务所需占用的时隙数量，将M路业务分别映射入可编程时隙组帧的至少一个时隙中，具体的，针对每路业务执行：
根据每路业务所需占用的时隙数量，将当前业务映射入可编程时隙组帧包括的对应子容器中，其中，可编程时隙组帧包含根据M路业务划分的M个子容器，第i个子容器对应第i路业务，第i个子容器包含第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
例如，将M路业务分别映射入PTSG-n的一个或多个时隙，也即分别映射入由PTSG-n的一个或多个时隙所组成的各个子容器当中，可以标记为PTSG-n1，PTSG-n2，…，PTSG-nM，其中PTSG-n1，PTSG-n2，…，PTSG-nM分别属于PTSG-n的一部分，分别由n1，n2，…，nM个时隙组成，同时生成M路业务的具体映射开销信息。
可选地，当每路业务的传送需求中包含该路业务的业务类型时，将M路业务分别映射入可编程时隙组帧的至少一个时隙中，可以采用以下方法：
若M路业务中包含K路业务类型为分组业务的业务，则将K路业务类型为分组业务的业务汇聚为一路整体业务，一路整体业务所需占用的时隙数量为K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2。
此时，针对每路业务执行：
根据每路业务所需占用的时隙数量，将当前业务映射入可编程时隙组帧包括的对应子容器中，其中，可编程时隙组帧包含根据M*路业务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，第i个子容器包含第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
例如，第一路业务的业务类型为CBR业务，所需占用的时隙数量为2，第二路业务的的业务类型为CBR业务，所需占用的时隙数量为1，第三路业务的业务类型为PKT业务，所需占用的时隙数量为3，第四路业务的业务类型为PKT业务，所需占用的时隙数量为2。第一路业务可以采用GMP映射入PTSG-2，第二路业务可以采用GMP映射入PTSG-1，将第三路业务和第四路业务汇聚作为一路整体业务，汇聚后的业务所需占用的时隙数量为2+3＝5，则汇聚后的业务可以采用IMP或GFP映射入PTSG-5。
因此，通过将分组业务汇聚可以提高传送带宽利用率。
第二，根据可编程时隙组帧的帧结构，将至少一个映射入M路业务的可编程时隙组帧映射到可变光净荷单元的净荷区。
当可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
根据OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N1个预设码块粒度为s1字节的码块依次映射到OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
参阅图7所示，将图5所示的PTSG-n映射入OPUflex的净荷区。一个PTSG-n可映射入OPUflex的净荷区的r行，r＝N/238。具体映射方式可以采用比特同步映射，如图7所示，将PTSG-n的N个16B码块从左到右从上到下依次放置到OPUflex净荷区的r行，OPUflex净荷区每行包含238个16字节码块，PTSG-n的每个16B码块和OPUflex净荷区的每16字节一一对应。PTSG-n帧正好匹配OPUflex帧净荷区r行。
当可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
根据OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
参阅图8所示，将图6所示的PTSG-n映射入OPUKm的净荷区。238*m 为OPUKm帧净荷区一行所包含的16B码块数量，OPUKm帧包含m个OPU实例(标记为OPU#1，OPU#2，…，OPU#m)，m是指可变光净荷单元OPUKm中包含OPU实例的数量，每个OPU实例帧由4行3808列字节组成，OPU实例的每行包括238个16B码块。具体映射方式可以采用比特同步映射，如图7所示，将PTSG-n的N个16B码块从左到右依次放入m个OPU实例，然后从上到下依次放置到OPUKm净荷区的r行。
第三，在可变光净荷单元的开销区添加传送M路业务所需的开销信息。
下面以图9为例说明，图9中为OPUflex的开销区的各种开销信息。
(1)在可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，PSI[0]携带净荷类型PT开销值，占用1字节，与MFAS(Multiframe Alignment Signal，复帧对齐信号)＝0相对应，其中，PT开销值为第一预设值，第一预设值用于指示可变光净荷单元承载多路业务。
具体的，这里的第一预设位置处可以为OPUflex帧的第4行第15行，或者每个OPU实例的开销区的第4行第15行。这里的第一预设值可以为PT＝0x23。
(2)添加PSI[1]，PSI[1]携带n，与MFAS＝1相对应，占用1字节
(3)添加PSI[2]至PSI[n+1]，共占用n字节，PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应可编程时隙组帧中的时隙(j-1)，用于指示时隙j-1的分配占用情况，2≤j≤n+1。
参阅图10所示，PSI[j]包含占用指示字段(Occupation，OCCU)和业务指示字段(Client Identifier，CID)。
其中，OCCU占用1比特，用于指示时隙(j-1)是否被占用，0表示空闲，1表示占用。
CID，占用7比特，用于指示时隙(j-1)被占用时，时隙(j-1)承载的业务的业务标识。
(4)在可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元 复帧指示OMFI(OPU Multi-Frame Identifie，光净荷单元复帧指示)，OMFI的取值为0～n-1，当OMFI的取值为k时，表明在可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，时隙开销用于按照预设规则存放映射开销信息。
这里的第二预设位置为OPUflex帧的第4行第16列，或者每个OPU实例的开销区的第4行第16列行，OMFI占用1字节，第三预设位置为OPUflex帧的第1～3行第15～16列，或者每个OPU实例的开销区的第1～3行第15～16列，时隙开销共占用6字节。
具体的，在可变光净荷单元的开销区添加传送M路业务所需的开销信息之前，还需生成针对每路业务的映射开销信息，一般地，针对每路业务的映射开销信息在将该路业务映射入PTSG-n的至少一个时隙后生成。
可选的，预设规则为：针对第t路业务的映射开销信息存放于第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，第t路业务为M路业务中的任意一路业务。
例如，将第一路业务占用时隙1～时隙3，则针对第一路业务的映射开销信息可以选择存入时隙1对应的时隙开销或时隙3对应的时隙开销。假设，将第一路业务的映射开销信息放置于时隙1对应的时隙开销，那么时隙2和时隙3分别对应的时隙开销保留。
进一步地，图11所示为PTSG-n到OPUflex的映射过程等价展现方式。
具体的，同步映射PTSG-n到OPUflex净荷区，其中一个PTSG-n帧包含N个16B码块，N＝LCM(238,n)，也即一个PTSG-n帧包含r倍的238个16B码块，r等于N/238。该过程可等价看作在每238个16B数据码块插入1个16B开销码块，该16B开销码块即为ODUflex帧每行的前16个字节(开销区)。相应地，当完成该同步映射后，1个PTSG-n帧对应占用OPUflex帧的r行。OPUflex的速率为239/238*n*Rts。
进一步地，在根据映射规程，映射M路业务到可变光净荷单元之后，获得映射入M路业务的可变光净荷单元OPUflex或OPUKm，添加对应的 ODUflex开销或ODUKm开销，封装为对应的ODUflex帧或ODUKm帧。
参阅图12所示，采用本发明实施例提供的方法将两路业务映射入OPUflex的具体过程为：
假设两路业务待传送，第一路业务的映射传送控制信息包括第一路业务为固定比特速率业务，即CBR业务，其流量大小为3Gbit/s，第一路业务的映射传送控制信息包括第二路业务为分组业务，即PKT业务，其流量大小为2Gbit/s。根据上述映射传送控制信息，确定针对这两路业务的映射规程，包括：基于承载的多路业务，综合考虑，为了以最优带宽承载效率传送该两路业务，可构造PTSG-5，其速率为5Gbit/s，包含5个时隙，每个时隙速率为1Gbit/s；PTSG-5帧结构为1190个16B码块，其中1190通过LCM(238,5)可知。相应地，第一路CBR业务占用3个时隙；第二路PKT业务占用2个时隙。
进一步地，根据映射规程，通过GMP将第一路CBR业务映射入PTSG-5的子容器PTSG-n1，其中n1＝3，PTSG-n1由PTSG-5的时隙1，时隙2和时隙3组成；通过IMP将第二路PKT业务映射入PTSG-5的子容器PTSG-n2，其中n2＝2，PTSG-n2由PTSG-5的时隙4和时隙5组成。同时，需要生成这两路业务的映射开销信息并放置于PTSG-5相应的时隙开销，例如第一路CBR业务映射开销信息放置于PTSG-5的第3个时隙开销，第二路PKT业务映射开销信息放置于PTSG-5的第5个时隙开销，PTSG-5的其他3个时隙开销保留。
采用比特同步映射PTSG-5到OPUflex净荷区，1190个16B码块对应ODUflex帧净荷区5行，将1190个16B码块依次放置到ODUflex帧净荷区相应位置，如图11所示，并将PTSG-5的其他时隙开销信息添加到OPUflex开销区，其中，ODUflex速率为239/238*5Gbit/s。
由上可知，本发明实施例提供一种多路业务发送方法，以可变光净荷单元为OPUflex为例，参阅图13所示，将多个客户业务映射入PTSG-n的至少一个时隙，再将PTSG-n进一步映射到可变光净荷单元，实现基于客户业务传送需求灵活定制传送解决方案，使数据平面具备可编程能力，可根据需要灵 活映射，满足多种速率业务混合承载，满足客户业务的定制化传送需求，且承载容器速率大小灵活可变，时隙划分灵活，能够提高带宽利用率，还能兼容现有的ODUflex帧结构及开销监控机制。参阅图14所示，最后两条路径为本发明提出的多业务传送方案，分别对应ODUflex和ODUKm。
参阅图15所示，基于上述多路业务发送方法，本发明实施例还提供一种多路业务接收方法，包括：
步骤1500：解析出可变光净荷单元。
例如，接收ODUflex帧，提取ODUflex开销，解析出OPUflex帧。
步骤1510：从可变光净荷单元的开销区提取出开销信息，根据开销信息确定针对可变光净荷单元的解映射规程，解映射规程用于通过可编程时隙组帧从可变光净荷单元中解映射出M路业务，可编程时隙组帧是指用于满足M个业务分别对应的传送需求的时隙集合，M≥2。
步骤1520：根据解映射规程，从可变光净荷单元的净荷区解映射出M路业务。
其中，解映射规程包括可编程时隙组帧包含的时隙数量、可编程时隙组帧的帧结构、以及M路业务中每路业务占用的时隙数量。
针对步骤1510，从可变光净荷单元的开销区提取出开销信息，根据开销信息确定针对可变光净荷单元的解映射规程，包括以下两个方面：
第一，根据开销信息确定可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，n≥1。
具体的，参阅图9所示，在可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别PSI[0]携带的PT开销值，PT开销值为第一预设值，第一预设值用于指示可变光净荷单元承载多路业务；
提取PSI[1]，识别PSI[1]携带的n，n用于指示可编程时隙组帧包含的时隙数量；
提取PSI[2]至PSI[n+1]，识别PSI[2]至PSI[n+1]，PSI[2]至PSI[n+1]用于指示每个时隙的分配占用情况，确定可变光净荷单元承载M路业务，以及每 路业务占用的时隙数量，其中，PSI[j]对应可编程时隙组帧中的时隙(j-1)，用于指示时隙j-1的分配占用情况，2≤j≤n+1。
其中，PSI[j]包含占用指示字段和业务指示字段，占用指示字段用于指示时隙(j-1)是否被占用，业务指示字段用于指示时隙(j-1)被占用时，时隙(j-1)承载的业务的业务标识。
第二，根据可编程时隙组帧包含的时隙数量n确定可编程时隙组帧的帧结构。
可编程时隙组帧的帧结构为：可变光净荷单元为OPUflex时，可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，可编程时隙组帧的速率为n倍时隙速率。
可选地，N1为3808/s1与n的最小公倍数。
可编程时隙组帧的帧结构为：可变光净荷单元为OPUKm时，可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指OPUKm中包含OPU实例的数量，可编程时隙组帧的速率为n倍时隙速率。
可选地，N2为3808*m/s2与n的最小公倍数。
例如，可变光净荷单元为OPUflex，PT＝0x23，n＝5，则PSI[2]至PSI[6]分别对应的OCCU均为1，即5个时隙均被占用，其中，PSI[2]和PSI[3]的CID均携带业务标识1，PSI[4]携带业务标识2，PSI[5]和PSI[6]的CID均携带业务标识3，由此可知，可变光净荷单元承载多路业务，具体为3路业务，其中，业务1占用的时隙数量为2，业务2占用的时隙数量为1，业务3占用的时隙数量为2。以及PTSG-5的帧结构由1190个预设码块粒度为16字节的码块组成，1190＝LCM(238,5)。
须知，此处为与添加开销信息相反的过程，与上述多路业务传送过程的重复之处不再赘述。
针对步骤1520，根据解映射规程，从可变光净荷单元的净荷区解映射出M路业务，包括以下两个步骤：
首先，根据可编程时隙组帧的帧结构，从可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
然后，根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
具体的，根据可编程时隙组帧的帧结构，从可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，分为两种可能的情况：
第一种情况：
可变光净荷单元为OPUflex时，根据OPUflex对应的可编程时隙组帧的帧结构，从可变光净荷单元的净荷区的每r1行解映射出一个可编程时隙组帧；
其中，r1＝N1*s1/3808，OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
第二种情况：
可变光净荷单元为OPUKm时，根据OPUKm对应的可编程时隙组帧的帧结构，从可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
其中，r2＝N2*s2/(3808*m)，OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务时，还需提取每个时隙的时隙开销，根据预设规则识别出M路业务分别对应的映射开销信息；
针对每个可编程时隙组帧，执行：
根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出M路业务分别对应的M个子容器，第i个子容器对应第i路业务，第i个子容器包含第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
根据M路业务分别对应的M个子容器以及M路业务分别对应的映射开销信息，从M个子容器中分别解映射出M路业务。
具体解映射方法可以使用GMP、IMP、GFP等，例如对于固定比特速率业务可以采用GMP，对于分组业务可以使用IMP或GFP。
其中，预设规则为：针对第t路业务的映射开销信息存放于第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，第t路业务为M路业务中的任意一路业务。
基于与上述图4所对应的实施例同样的发明构思，参阅图16所示，本发明实施例还提供了一种多路业务传送装置，本实施例中与图4所对应的实施例重复的内容不再赘述。
参阅图16所示，本发明实施例提供一种多路业务传送装置，包括：
获取单元1601，用于获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
处理单元1602，用于根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
以及根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
在一种可选的实现方式中，每路业务的传送需求包含该路业务所需的流量大小；
所述映射规程至少包括所述可编程时隙组帧包含的时隙数量、时隙速率、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务所需占用的时隙数量；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程时，所述处理单元1602，用于：
根据所述M路业务分别对应的流量大小确定所述可编程时隙组帧包含的时隙数量n和时隙速率，n≥1；
根据所述可编程时隙组帧包含的时隙数量n，确定所述可编程时隙组帧的帧结构；
根据所述M路业务分别对应的流量大小和所述时隙速率确定每路业务所需占用的时隙数量。
在一种可选的实现方式中，根据所述M路业务分别对应的流量大小确定所述净荷时隙组帧包含的时隙数量n和时隙速率时，所述处理单元1602，用于：
根据所述M路业务分别对应的流量大小计算针对所述M路业务的流量大小比例关系；
根据所述M路业务分别对应的流量大小和所述比例关系，确定所述可编程时隙组帧包含的时隙数量n和时隙速率。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述映射规程，映射所述M路业务到所述可变光净荷单元时，所述处理单元1602，用于：
根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，获得至少一个映射入所述M路业务的可编程时隙组帧；
根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息。
在一种可选的实现方式中，根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元1602，用于：
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据所述M路业务划分的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
在一种可选的实现方式中，每路业务的传送需求包含该路业务的业务类型；
将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元1602，用于：
若所述M路业务中包含K路业务类型为分组业务的业务，则将所述K路业务类型为分组业务的业务汇聚为一路整体业务，所述一路整体业务所需占用的时隙数量为所述K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2；
针对每路业务执行：
根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据M*路业务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的净荷时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元1602，用于：
所述可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
根据所述OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组 帧中的N1个预设码块粒度为s1字节的码块依次映射到所述OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元1602，用于：
所述可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
根据所述OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到所述OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息之前，所述处理单元1602，还用于：
生成针对每路业务的映射开销信息；
在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息时，所述处理单元1602，用于：
在所述可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，所述PSI[0]携带净荷类型PT开销值，与复帧对齐信号MFAS＝0相对应，其中，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；添加PSI[1]，所述PSI[1]携带n，与MFAS＝1相对应；添加PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1；
在所述可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元复帧指示OMFI，所述OMFI的取值为0～n-1，当OMFI的取值为k时，表明在所述可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为所 述可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，所述时隙开销用于按照预设规则存放所述映射开销信息。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
基于与上述图15所对应的实施例同样的发明构思，参阅图17所示，本发明实施例还提供了一种多路业务接收装置，本实施例中与图15所对应的实施例重复的内容不再赘述。
参阅图17所示，本发明实施例提供一种多路业务接收装置，包括：
解析单元1701，用于解析出可变光净荷单元；
处理单元1702，用于从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧用于满足所述M个业务分别对应的传送需求，M≥2；
以及根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
在一种可选的实现方式中，所述解映射规程包括所述可编程时隙组帧包含的时隙数量、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务占用的时隙数量；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程时，所述处理单元1702，用于：
根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务 占用的时隙数量，n≥1；
根据所述可编程时隙组帧包含的时隙数量n确定所述可编程时隙组帧的帧结构。
在一种可选的实现方式中，根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量时，所述处理单元1702，用于：
在所述可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别所述PSI[0]携带的PT开销值，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；
提取PSI[1]，识别所述PSI[1]携带的n，n用于指示所述可编程时隙组帧包含的时隙数量；
提取PSI[2]至PSI[n+1]，识别所述PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]用于指示每个时隙的分配占用情况，确定所述可变光净荷单元承载M路业务，以及每路业务占用的时隙数量，其中，PSI[j]对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1。
在一种可选的实现方式中，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N1为3808/s1与n的最小公倍数。
在一种可选的实现方式中，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率。
在一种可选的实现方式中，N2为3808*m/s2与n的最小公倍数。
在一种可选的实现方式中，根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务时，所述处理单元1702，用于：
根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单元1702，用于：
所述可变光净荷单元为OPUflex时，根据所述OPUflex对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r1行解映射出一个可编程时隙组帧；
其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
在一种可选的实现方式中，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单元1702，用于：
所述可变光净荷单元为OPUKm时，根据所述OPUKm对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
在一种可选的实现方式中，从所述可变光净荷单元的开销区提取出开销信息时，所述处理单元1702，还用于：
提取每个时隙的时隙开销，根据预设规则识别出所述M路业务分别对应的映射开销信息；
根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出所述M路业务时，所述处理单元1702，用于：
针对每个可编程时隙组帧，执行：
根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出所述M路业务分别对应的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
根据所述M路业务分别对应的M个子容器以及所述M路业务分别对应的映射开销信息，从所述M个子容器中分别解映射出M路业务。
在一种可选的实现方式中，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
参阅图18所示，本发明实施例提供一种多路业务传送设备，例如，OTN设备，该设备包括：
收发器1801；
存储器1802，用于存储指令；
处理器1803，与所述收发器和所述存储器分别相连，用于根据所述存储器存储的指令，执行以下操作：
通过收发器获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
以及根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
参阅图19所示，本发明实施例提供一种多路业务接收装置，包括：
收发器1901；
存储器1902，用于存储指令；
处理器1903，与所述收发器和所述存储器分别相连，用于根据所述存储器存储的指令，执行以下操作：
解析出可变光净荷单元；
从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧用于满足所述M个业务分别对应的传送需求，M≥2；
以及根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
需要说明的是图18和图19所示的各部分之间的连接方式仅为一种可能的示例，也可以是，收发器与存储器均与处理器连接，且收发器与存储器之间没有连接，或者，也可以是其他可能的连接方式。
参阅图18、图19所示，上述实施例中的存储器，用于存储处理器执行的程序代码，可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以是非易失性存储器(non-volatile memory)，例如只读存储器(read-only memory，ROM)，快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)、或者存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是上述存储器的组合。
参阅图18、图19所示，上述实施例中的处理器，可以是一个中央处理单元(central processing unit，CPU)。
此外，图18和图19可以为具有多路业务传送和接收功能的同一OTN设备。
综上所述，本发明实施例提供一种多路业务传送方法，获取M路业务的 映射传送控制信息，确定M路业务的映射规程，以及根据映射规程将M路业务映射到可变光净荷单元，即将M个客户业务映射入PTSG-n的至少一个时隙，再将PTSG-n进一步映射到可变光净荷单元，实现基于客户业务传送需求灵活定制传送解决方案，使数据平面具备可编程能力，可根据需要灵活映射，满足多种速率业务混合承载，满足客户业务的定制化传送需求，且承载容器速率大小灵活可变，时隙划分灵活，能够提高带宽利用率，还能兼容现有的ODUflex帧结构及开销监控机制。
此外，本发明实施例还提供一种多路业务接收方法，是与多路业务传送方法对应的逆过程，在解析出可变光净荷单元后，根据可变光净荷单元的开销区确定解映射规程，根据解映射规程从可变光净荷单元中解映射出M路业务。因此，能够满足多种速率业务混合承载，以及客户业务的定制化传送需求。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程
和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (56)

  1. 一种多路业务传送方法，其特征在于，包括：
    获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
    根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
    根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
  2. 如权利要求1所述的方法，其特征在于，每路业务的传送需求包含该路业务所需的流量大小；
    所述映射规程至少包括所述可编程时隙组帧包含的时隙数量、时隙速率、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务所需占用的时隙数量；
    根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，包括：
    根据所述M路业务分别对应的流量大小确定所述可编程时隙组帧包含的时隙数量n和时隙速率，n≥1；
    根据所述可编程时隙组帧包含的时隙数量n，确定所述可编程时隙组帧的帧结构；
    根据所述M路业务分别对应的流量大小和所述时隙速率确定每路业务所需占用的时隙数量。
  3. 如权利要求2所述的方法，其特征在于，根据所述M路业务分别对应的流量大小确定所述净荷时隙组帧包含的时隙数量n和时隙速率，包括：
    根据所述M路业务分别对应的流量大小计算针对所述M路业务的流量大小比例关系；
    根据所述M路业务分别对应的流量大小和所述比例关系，确定所述可编程时隙组帧包含的时隙数量n和时隙速率。
  4. 如权利要求2或3所述的方法，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
  5. 如权利要求4所述的方法，其特征在于，N1为3808/s1与n的最小公倍数。
  6. 如权利要求2或3所述的方法，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
  7. 如权利要求6所述的方法，其特征在于，N2为3808*m/s2与n的最小公倍数。
  8. 如权利要求1-7任一项所述的方法，其特征在于，根据所述映射规程，映射所述M路业务到所述可变光净荷单元，包括：
    根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，获得至少一个映射入所述M路业务的可编程时隙组帧；
    根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区；
    在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息。
  9. 如权利要求8所述的方法，其特征在于，根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中， 包括：
    针对每路业务执行：
    根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中；其中，所述可编程时隙组帧包含根据所述M路业务划分的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
  10. 如权利要求8所述的方法，其特征在于，每路业务的传送需求包含该路业务的业务类型；
    将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，包括：
    若所述M路业务中包含K路业务类型为分组业务的业务，则将所述K路业务类型为分组业务的业务汇聚为一路整体业务，所述一路整体业务所需占用的时隙数量为所述K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2；
    针对每路业务执行：
    根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据M*路业务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
  11. 如权利要求8-10任一项所述的方法，其特征在于，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的净荷时隙组帧映射到所述可变光净荷单元的净荷区，包括：
    所述可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
    根据所述OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N1个预设码块粒度为s1字节的码块依次映射到所述OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1 个预设码块粒度为s1字节的码块。
  12. 如权利要求8-10任一项所述的方法，其特征在于，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区，包括：
    所述可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
    根据所述OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到所述OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
  13. 如权利要求8-12任一项所述的方法，其特征在于，在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息之前，还包括：
    生成针对每路业务的映射开销信息；
    在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息，包括：
    在所述可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，所述PSI[0]携带净荷类型PT开销值，与复帧对齐信号MFAS＝0相对应，其中，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；添加PSI[1]，所述PSI[1]携带n，与MFAS＝1相对应；添加PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1；
    在所述可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元复帧指示OMFI，所述OMFI的取值为0～n-1，当OMFI的取值为k时，表明在所述可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为所述可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，所述时隙开销用于按照预设规则存放所述映射开销信息。
  14. 如权利要求13所述的方法，其特征在于，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
  15. 如权利要求13所述的方法，其特征在于，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
  16. 一种多路业务接收方法，其特征在于，包括：
    解析出可变光净荷单元；
    从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合，M≥2；
    根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
  17. 如权利要求16所述的方法，其特征在于，所述解映射规程包括所述可编程时隙组帧包含的时隙数量、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务占用的时隙数量；
    从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，包括：
    根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，n≥1；
    根据所述可编程时隙组帧包含的时隙数量n确定所述可编程时隙组帧的帧结构。
  18. 如权利要求17所述的方法，其特征在于，根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，包括：
    在所述可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别所述PSI[0]携带的PT开销值，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；
    提取PSI[1]，识别所述PSI[1]携带的n，n用于指示所述可编程时隙组帧包含的时隙数量；
    提取PSI[2]至PSI[n+1]，识别所述PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]用于指示每个时隙的分配占用情况，确定所述可变光净荷单元承载M路业务，以及每路业务占用的时隙数量，其中，PSI[j]对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1。
  19. 如权利要求18所述的方法，其特征在于，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
  20. 如权利要求17-19任一项所述的方法，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率。
  21. 如权利要求20所述的方法，其特征在于，N1为3808/s1与n的最小公倍数。
  22. 如权利要求17-19任一项所述的方法，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率。
  23. 如权利要求22所述的方法，其特征在于，N2为3808*m/s2与n的最小公倍数。
  24. 如权利要求16-18任一项所述的方法，其特征在于，根据所述解映射 规程，从所述可变光净荷单元的净荷区解映射出所述M路业务，包括：
    根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
    根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
  25. 如权利要求24所述的方法，其特征在于，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧，包括：
    所述可变光净荷单元为OPUflex时，根据所述OPUflex对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r1行解映射出一个可编程时隙组帧；
    其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
  26. 如权利要求24所述的方法，其特征在于，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧，包括：
    所述可变光净荷单元为OPUKm时，根据所述OPUKm对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
    其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
  27. 如权利要求16-26任一项所述的方法，其特征在于，从所述可变光净荷单元的开销区提取出开销信息，还包括：
    提取每个时隙的时隙开销，根据预设规则识别出所述M路业务分别对应的映射开销信息；
    根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出所述M路业务，包括：
    针对每个可编程时隙组帧，执行：
    根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出所述M路业务分别对应的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
    根据所述M路业务分别对应的M个子容器以及所述M路业务分别对应的映射开销信息，从所述M个子容器中分别解映射出M路业务。
  28. 如权利要求27所述的方法，其特征在于，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
  29. 一种多路业务传送装置，其特征在于，包括：
    获取单元，用于获取M路业务的映射传送控制信息，每路业务的映射传送控制信息携带该路业务的传送需求，其中，M≥2；
    处理单元，用于根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程，所述映射规程用于使所述M路业务通过可编程时隙组帧映射到可变光净荷单元，所述可编程时隙组帧是指用于满足所述M个业务分别对应的传送需求的时隙集合；
    以及根据所述映射规程，映射所述M路业务到所述可变光净荷单元。
  30. 如权利要求29所述的装置，其特征在于，每路业务的传送需求包含该路业务所需的流量大小；
    所述映射规程至少包括所述可编程时隙组帧包含的时隙数量、时隙速率、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务所需占用的时隙数量；
    根据所述M路业务的映射传送控制信息，确定针对所述M路业务的映射规程时，所述处理单元，用于：
    根据所述M路业务分别对应的流量大小确定所述可编程时隙组帧包含的 时隙数量n和时隙速率，n≥1；
    根据所述可编程时隙组帧包含的时隙数量n，确定所述可编程时隙组帧的帧结构；
    根据所述M路业务分别对应的流量大小和所述时隙速率确定每路业务所需占用的时隙数量。
  31. 如权利要求30所述的装置，其特征在于，根据所述M路业务分别对应的流量大小确定所述净荷时隙组帧包含的时隙数量n和时隙速率时，所述处理单元，用于：
    根据所述M路业务分别对应的流量大小计算针对所述M路业务的流量大小比例关系；
    根据所述M路业务分别对应的流量大小和所述比例关系，确定所述可编程时隙组帧包含的时隙数量n和时隙速率。
  32. 如权利要求30或31所述的装置，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUflex速率为239/238*n倍时隙速率。
  33. 如权利要求32所述的装置，其特征在于，N1为3808/s1与n的最小公倍数。
  34. 如权利要求30或31所述的装置，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率，所述可变光净荷单元OPUKm速率为239/238*n倍时隙速率。
  35. 如权利要求34所述的装置，其特征在于，N2为3808*m/s2与n的最小公倍数。
  36. 如权利要求29-35任一项所述的装置，其特征在于，根据所述映射规 程，映射所述M路业务到所述可变光净荷单元时，所述处理单元，用于：
    根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中，获得至少一个映射入所述M路业务的可编程时隙组帧；
    根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区；
    在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息。
  37. 如权利要求36所述的装置，其特征在于，根据每路业务所需占用的时隙数量，将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元，用于：
    针对每路业务执行：
    根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据所述M路业务划分的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n。
  38. 如权利要求36所述的装置，其特征在于，每路业务的传送需求包含该路业务的业务类型；
    将所述M路业务分别映射入所述可编程时隙组帧的至少一个时隙中时，所述处理单元，用于：
    若所述M路业务中包含K路业务类型为分组业务的业务，则将所述K路业务类型为分组业务的业务汇聚为一路整体业务，所述一路整体业务所需占用的时隙数量为所述K路业务类型为分组业务的业务分别占用的时隙数量之和，K≥2；
    针对每路业务执行：
    根据当前业务所需占用的时隙数量，将所述当前业务映射入所述可编程时隙组帧包括的对应子容器中，其中，所述可编程时隙组帧包含根据M*路业 务划分的M*个子容器，M*＝M-K+1，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM*≤n。
  39. 如权利要求36-38任一项所述的装置，其特征在于，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的净荷时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元，用于：
    所述可变光净荷单元为OPUflex时，针对每个可编程时隙组帧执行：
    根据所述OPUflex对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N1个预设码块粒度为s1字节的码块依次映射到所述OPUflex的净荷区的r1行，其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
  40. 如权利要求36-38任一项所述的装置，其特征在于，根据所述可编程时隙组帧的帧结构，将所述至少一个映射入所述M路业务的可编程时隙组帧映射到所述可变光净荷单元的净荷区时，所述处理单元，用于：
    所述可变光净荷单元为OPUKm时，针对每个净荷时隙组帧执行：
    根据所述OPUKm对应的可编程时隙组帧帧结构，将当前可编程时隙组帧中的N2个预设码块粒度为s2字节的码块依次映射到所述OPUKm的净荷区的r2行，其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
  41. 如权利要求36-40任一项所述的装置，其特征在于，在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息之前，所述处理单元，还用于：
    生成针对每路业务的映射开销信息；
    在所述可变光净荷单元的开销区添加传送所述M路业务所需的开销信息时，所述处理单元，用于：
    在所述可变光净荷单元的开销区中的第一预设位置处，添加净荷结构指示PSI[0]，所述PSI[0]携带净荷类型PT开销值，与复帧对齐信号MFAS＝0相 对应，其中，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；添加PSI[1]，所述PSI[1]携带n，与MFAS＝1相对应；添加PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]分别与MFAS＝2至MFAS＝n+1相对应，用于指示每个时隙的分配占用情况，其中，PSI[j]与MFAS＝j相对应，且对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1；
    在所述可变光净荷单元的开销区中的第二预设位置处，添加光净荷单元复帧指示OMFI，所述OMFI的取值为0～n-1，当OMFI的取值为k时，表明在所述可变光净荷单元的开销区中的第三预设位置处的添加的时隙开销为所述可编程时隙组帧中的时隙(k+1)的时隙开销，0≤k≤n-1，所述时隙开销用于按照预设规则存放所述映射开销信息。
  42. 如权利要求41所述的装置，其特征在于，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
  43. 如权利要求41所述的装置，其特征在于，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
  44. 一种多路业务接收装置，其特征在于，包括：
    解析单元，用于解析出可变光净荷单元；
    处理单元，用于从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程，所述解映射规程用于通过可编程时隙组帧从所述可变光净荷单元中解映射出M路业务，所述可编程时隙组帧用于满足所述M个业务分别对应的传送需求，M≥2；
    以及根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务。
  45. 如权利要求44所述的装置，其特征在于，所述解映射规程包括所述可编程时隙组帧包含的时隙数量、所述可编程时隙组帧的帧结构、以及所述M路业务中每路业务占用的时隙数量；
    从所述可变光净荷单元的开销区提取出开销信息，根据所述开销信息确定针对所述可变光净荷单元的解映射规程时，所述处理单元，用于：
    根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量，n≥1；
    根据所述可编程时隙组帧包含的时隙数量n确定所述可编程时隙组帧的帧结构。
  46. 如权利要求45所述的装置，其特征在于，根据所述开销信息确定所述可编程时隙组帧包含的时隙数量n、每路业务占用的时隙数量时，所述处理单元，用于：
    在所述可变光净荷单元的开销区中的第一预设位置处，提取PSI[0]，识别所述PSI[0]携带的PT开销值，所述PT开销值为第一预设值，所述第一预设值用于指示所述可变光净荷单元承载多路业务；
    提取PSI[1]，识别所述PSI[1]携带的n，n用于指示所述可编程时隙组帧包含的时隙数量；
    提取PSI[2]至PSI[n+1]，识别所述PSI[2]至PSI[n+1]，所述PSI[2]至PSI[n+1]用于指示每个时隙的分配占用情况，确定所述可变光净荷单元承载M路业务，以及每路业务占用的时隙数量，其中，PSI[j]对应所述可编程时隙组帧中的时隙(j-1)，用于指示所述时隙j-1的分配占用情况，2≤j≤n+1。
  47. 如权利要求46所述的装置，其特征在于，所述PSI[j]包含占用指示字段和业务指示字段，所述占用指示字段用于指示所述时隙(j-1)是否被占用，所述业务指示字段用于指示所述时隙(j-1)被占用时，所述时隙(j-1)承载的业务的业务标识。
  48. 如权利要求45-47任一项所述的装置，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUflex时，所述可编程时隙组帧 由N1个预设码块粒度为s1字节的码块组成，N1为3808/s1与n的公倍数，所述可编程时隙组帧的速率为n倍时隙速率。
  49. 如权利要求48所述的装置，其特征在于，N1为3808/s1与n的最小公倍数。
  50. 如权利要求45-47任一项所述的装置，其特征在于，所述可编程时隙组帧的帧结构为：所述可变光净荷单元为OPUKm时，所述可编程时隙组帧由N2个预设码块粒度为s2字节的码块组成，N2为3808*m/s2与n的公倍数，m是指所述OPUKm中包含OPU实例的数量，所述可编程时隙组帧的速率为n倍时隙速率。
  51. 如权利要求50所述的装置，其特征在于，N2为3808*m/s2与n的最小公倍数。
  52. 如权利要求45-51任一项所述的装置，其特征在于，根据所述解映射规程，从所述可变光净荷单元的净荷区解映射出所述M路业务时，所述处理单元，用于：
    根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧；
    根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出M路业务。
  53. 如权利要求52所述的装置，其特征在于，根据所述可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单元，用于：
    所述可变光净荷单元为OPUflex时，根据所述OPUflex对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r1行解映射出一个可编程时隙组帧；
    其中，r1＝N1*s1/3808，所述OPUflex的净荷区的每行包含3808/s1个预设码块粒度为s1字节的码块。
  54. 如权利要求52所述的装置，其特征在于，根据所述可编程时隙组帧 的帧结构，从所述可变光净荷单元的净荷区解映射出至少一个可编程时隙组帧时，所述处理单元，用于：
    所述可变光净荷单元为OPUKm时，根据所述OPUKm对应的可编程时隙组帧的帧结构，从所述可变光净荷单元的净荷区的每r2行解映射出一个可编程时隙组帧；
    其中，r2＝N2*s2/(3808*m)，所述OPUKm的净荷区的每行包含3808*m/s2个预设码块粒度为s2字节的码块。
  55. 如权利要求44-54任一项所述的装置，其特征在于，从所述可变光净荷单元的开销区提取出开销信息时，所述处理单元，还用于：
    提取每个时隙的时隙开销，根据预设规则识别出所述M路业务分别对应的映射开销信息；
    根据每路业务占用的时隙数量，从每个可编程时隙组帧解映射出所述M路业务时，所述处理单元，用于：
    针对每个可编程时隙组帧，执行：
    根据每路业务占用的时隙数量，从当前可编程时隙组帧中解映射出所述M路业务分别对应的M个子容器，第i个子容器对应第i路业务，所述第i个子容器包含所述第i路业务所需占用的ni个时隙，其中，n1+n2+…+ni+…+nM≤n；
    根据所述M路业务分别对应的M个子容器以及所述M路业务分别对应的映射开销信息，从所述M个子容器中分别解映射出M路业务。
  56. 如权利要求55所述的装置，其特征在于，所述预设规则为：针对第t路业务的映射开销信息存放于所述第t路业务对应的第t个子容器中的第一时隙对应的时隙开销或最后一个时隙对应的时隙开销中，1≤t≤M，所述第t路业务为所述M路业务中的任意一路业务。
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