Pmc-sierra, Inc.

Microsemi Storage Solutions (u.s.), Inc.

Richard Tse

Winston K Mok

Carl Dietz McCrosky

Steven F Lang

A method and system are provided for measuring the propagation time, or one-way delay or latency, of an 8B/10B data stream, such as a CPRI stream, through a network using a transport network protocol, such as OTN. Embodiments of the present disclosure do not modify the CPRI client and are unlimited in the amount of delay that can be measured. At first and second network endpoints, information is gathered related to patterns associated with successive occurrences of a control character in the 8B/10B encoded data stream. This information is sent over a side channel separate from the 8B/10B encoded data stream. The one-way delay is determined based on a difference between the information related to the pattern identified at the first and second network endpoints.

Apparatus and method for measurement of propagation time of a data stream in a transport network

This invention provides a bus interface to connect SONET/SDH termination devices with payload processing devices while utilizing a minimum number of signals. The bus interface of this invention can scale with future advances in bandwidth in serial link technology.

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Vancouver, Canada

Richard Tse