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The new technologies of virtual concatenation, the link capacity adjustment scheme and the generic framing protocol make SDH/SONET survivable in the next-generation transport networks. However, based on synchronous time-division multiplexing, SDH/SONET only creates a private point-to-point path for a particular user that cannot be shared by other users when the path is in the idle state. Therefore it results in bandwidth inefficiency for accommodating bursty services. A new scheme called ‘channel statistical multiplexing’ is proposed. It is simple and practical for use when there are several data streams from the same source node to the same destination node in SDH/SONET networks.
Inspec keywords: optical fibre networks; multiplexing; SONET; synchronous digital hierarchy
Other keywords:
Subjects: Optical fibre networks; Multiplexing and switching in optical communication