Service transmission method and apparatus
A business and service layer technology, applied in the field of communication, can solve the problems of large logic resource occupation and high complexity of hardware implementation, and achieve the effects of avoiding the conversion process, improving bandwidth utilization, and saving logic resources
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specific Embodiment 1
[0174] Attached below Figure 7 And attached Figure 8 , the service layer frame is a high-order ODU4 frame, and the customer service is an ODU2 service. With 10 ODU2 channels mapped to one ODU4 frame, the specific steps of the service transmission method provided by the present invention are described in detail. It should be noted that, in this implementation example, the size of the logical channel unit used is 476 bytes, and the ODU4 frame includes 32 logical channel units. In addition, this implementation example does not consider the fault-tolerant processing of the overhead, and only provides a a storage structure.
[0175] Step 1.1: See Figure 7 , which shows a schematic diagram of allocation of OPUk overhead bytes in Embodiment 1 of the present invention. Figure 7 In , LCU represents the logical channel unit, LCU overhead represents the first storage part of the logical channel unit, and 476-n byte payload represents the second storage part of the logical channel ...
specific Embodiment 2
[0180] combined with Figure 9 And attached Figure 10 , the service layer frame is a high-order ODU4 frame, the customer service is an ODU1 service, and 40 ODU1 services are mapped to one ODU4 frame, and the specific steps of the service transmission method provided by the present invention are described in detail. It should be noted that, in this implementation example, the size of the logical channel unit used is 544 bytes, and the ODU4 frame includes 28 logical channel units. In addition, this implementation example does not consider the fault-tolerant processing of the overhead, and only provides A storage structure.
[0181] Step 2.1: See Figure 9 , which shows a schematic diagram of allocation of OPUk overhead bytes in Embodiment 2 of the present invention. Figure 9 In , LCU represents the logical channel unit, LCU overhead represents the first storage part of the logical channel unit, and 544-n byte payload represents the second storage part of the logical channel...
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