Patent ID: 9112603
Filing Date: 2015-08-18
Classification: H04B,H04J

Abstract:
1. An apparatus for measuring a delay, comprising: an overhead inserting unit configured to insert a time stamp into an overhead of a first multiframe to be transmitted from a first location to a second location; an overhead extracting unit configured to extract a time stamp from an overhead of a second multiframe received from the second location, the time stamp including bypass delay information of the second location; and a delay measuring unit configured to measure a round trip delay between the first location and the second location using the inserted time stamp and the extracted time stamp and adjust the measured round trip delay using the extracted bypass delay information, wherein a delay indicator for indicating mutual compatibility with another apparatus for measuring delay is inserted in the overhead of the first multiframe, wherein the overhead inserting unit is further configured to, in response to the delay indicator value being a first value, insert only a toggle signal from the overhead of the first multiframe, and in response to the delay indicator value being a second value, insert bypass delay information together with the toggle signal from the overhead of the first multiframe.