| 摘要 |
A method of time slot partitioning and overhead processing of an optical channel payload unit in an optical transport network comprises: A. determining the number of time slots to be partitioned for the optical channel payload unit in a payload area based on properties of service signals, partitioning the time slots in the payload area and determining mapping modes for services corresponding to each time slot; B. expending values of payload structure identification bytes in optical channel payload unit overhead based on the partitioning of the time slots and storing a mapping structure, the number of the time slots, and branch port numbers and a mapping mode corresponding to each time slot in the payload structure identification bytes; and C. assigning values for undefined bits 1 to 6 of adjustment control bytes to represent a multiframe in the optical channel payload unit overhead, and allocating an overhead cycle of the optical channel payload unit overhead to each time slot. The present invention partitions the payload area of the OPU only by redefining overhead bytes in the original specification and increasing relevant portion of time slot partitioning in order to increase effectiveness of bandwidth at lower expense and flexibility of the mapping modes such that the existing network has good compatibility without being changed greatly. |
