OPTICAL TRANSMISSION DEVICE AND TRANSMISSION FRAME GENERATION METHOD

PROBLEM TO BE SOLVED: To suppress jitter and wander by mitigating a gap that is generated in mapping a low-speed client signal to an OPU frame.SOLUTION: An optical transmission device includes: a serializer/deserializer by which an inputted client signal is converted into parallel data at a k-fold (...

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Main Authors HASHIMOTO AKIRA, NEKOTA KOJI, FUKANO HARUHISA, KINOSHITA KOICHI, HATAE SATORU, HIROSE TOSHIHARU
Format Patent
LanguageEnglish
Japanese
Published 09.05.2016
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To suppress jitter and wander by mitigating a gap that is generated in mapping a low-speed client signal to an OPU frame.SOLUTION: An optical transmission device includes: a serializer/deserializer by which an inputted client signal is converted into parallel data at a k-fold ((k) is an exponentiation of 2) and outputted; a frame generation part for generating a transmission frame from the client signal; and a stuff control part which is connected to output of the parallel data, performs stuff arithmetic for mapping the client signal to the transmission frame for the unit of 1/k bit and calculates a Cn (n=1/k) value that is a theoretical value of the stuff arithmetic.SELECTED DRAWING: Figure 6 【課題】 低速クライアント信号をＯＰＵフレームへマッピングする際に生じるギャップを緩和し、ジッタ、ワンダを抑制する。【解決手段】 光伝送装置は、入力されたクライアント信号をｋ倍（ｋは２のべき乗）のサンプリングレートでパラレルデータに変換して出力するシリアライザ・デシリアライザと、前記クライアント信号から伝送フレームを生成するフレーム生成部と、前記パラレルデータの出力に接続され、前記クライアント信号を前記伝送フレームへマッピングするためのスタッフ演算を１／ｋビット単位で行って、前記スタッフ演算の理論値であるＣｎ(n=1/k)値を算出するスタッフ制御部と、を有する。【選択図】図６
Bibliography:Application Number: JP20140201816