To evaluate the accuracy of a delivery time delivered, and carry out control depending on the evaluation.
A TSA evaluates the accuracy of the delivery time delivered from a TA and can work depending on the result of the evaluation. For example, the TSA can correct a time of a watch by using the delivered time and set the activation period of a time stamp when the error of the delivered time is within an allowance, and can request the other TA to check a time when the error of the delivered time is not within the allowance. Moreover, since the accuracy of the delivery time delivered from the TA depends on the communication channel of NTA→TA→TSA, the TSA inquires at the NTA and TA about the accuracy and evaluates the accuracy of the delivery time delivered from the TA. Then, the TSA can select an operation depending on the accuracy of the delivered time and can evaluate the accuracy depending on the communication channel.
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今岡 淳 Atsushi IMAOKA,分散処理システムにおける時刻同期方式の検討 Time Synchronization for Distributed Systems,電子情報通信学会技術研究報告 Vol.91 No.240 IEICE Technical Report,日本,社団法人電子情報通信学会 The Institute of Electronics, Information and Communication Engineers,第91巻
Noriaki Uchino
Nobuyuki Kimura
Takashi Kawai
Hitoshi Nakano