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    • 5. 发明授权
    • Method and apparatus for mapping and de-mapping in an optical transport network
    • 在光传输网络中映射和解映射的方法和装置
    • US08948205B2
    • 2015-02-03
    • US12712675
    • 2010-02-25
    • Maarten VissersQiuyou WuXin XiaoWei Su
    • Maarten VissersQiuyou WuXin XiaoWei Su
    • H04J3/00H04J3/16
    • H04J14/08H04B10/27H04J3/1652
    • The embodiments of the present invention disclose method and apparatus for mapping and de-mapping in an optical transport network, where the mapping method includes: constructing an Optical Channel Data Tributary Unit (ODTU) according to an amount M of time slots of a High Order Optical Channel Payload Unit (HO OPU) to be occupied by a Low Order Optical Channel Data Unit (LO ODU); mapping the LO ODU to a payload area of the ODTU in a M-byte granularity; encapsulating overhead information to the overhead area of the ODTU; and multiplexing the ODTU, which has been mapped the LO ODU and encapsulated with the overhead information, to the HO OPU, so as to provide a high-efficient and universal mode for mapping the LO ODU to the HO OPU.
    • 本发明的实施例公开了一种在光传输网络中映射和解映射的方法和装置,其中所述映射方法包括:根据高阶时隙的量M来构造光信道数据支路单元(ODTU) 光通道有效负载单元(HO OPU)由低阶光通道数据单元(LO ODU)占用; 将OD ODU以M字节粒度映射到ODTU的有效负载区域; 将开销信息封装到ODTU的开销区域; 并将已经映射到LO ODU并被封装的开销信息的ODTU复用到HO OPU,以提供用于将LO ODU映射到HO OPU的高效和通用的模式。