Patent ID: 7787448
Filing Date: 2010-08-31
Classification: H04J

Abstract:
1. A method for transparent transport of optical channel transmission unit (OTU) signals via an optical transport network (OTN), the method comprising: reserving an OTUj control overhead of OTUj signals entering an OTN network; converting said OTUj signals mapping into OTUk signals of the current OTN network for transmission, when said OTUk signals arriving at a boundary of the current OTN network, wherein said converting of said OTUj signals mapping into OTUk signals of the current OTN network for transmission includes: demapping said OTUk signals and converting them to the OTUj signals; continuously using said reserved OTUj control overhead as the OTUj control overhead for OTUj signals; and sending out OTUj signals from the OTN network, wherein j and k represent a rate rank of said OTN signals, respectively, and the value of j is smaller than the value of k.