ACTS (acoustic control and telemetry system) timing method

Abstract

An ACTS timing method relates to the communication technology. The ACTS timing method comprises the following steps that 1) a server transmits a time-code identity at the time of T1 and records the time T1; 2) a client feeds back a loopback frame after receiving a protocol frame; 3) a time delay sum value is computed; 4) if a line time delay is valid, a step 5) is implemented, and if not, a step 6) is implemented; 5) a timing counter adds the accumulated value by one and determines whether the accumulated value is greater than a preset value; 6) a timing invalidity counter adds the accumulated value by one and determines whether the accumulated value is greater than a preset value; 7) the time-code identity is set to be a timing identity, the transmitting time of a next time-code identity is computed, and according to the computed time, the server transmits a timing frame to the client; 9) the client corrects the time of itself. The ACTS timing method has the advantages of improving the timing precision, shortening the timing time and enhancing the timing timeliness of the client.

Description

technical field [0001] The present invention relates to communication technology. Background technique [0002] ACTS time synchronization technology is widely used in the telephone network. The principle of the ACTS protocol is that the MODEM of the ACTS client dials the MODEM of the ACTS server through the telephone network. The interaction of the protocol makes the time of the ACTS client and the ACTS server synchronized. [0003] The basic interaction process of ACTS message: [0004] ·The ACTS client dials up and establishes a time calibration channel. [0005] After the channel is established, the ACTS server sends the ACTS protocol frame to the ACTS client. [0006] · After receiving the ACTS protocol frame, the ACTS client forwards it to the ACTS server. [0007] The ACTS server receives the ACTS return frame and calculates the delay of the line. [0008] · The ACTS server delays sending ACTS protocol frames according to the line delay. [0009] After receiving ...

AI Technical Summary

Problems solved by technology

[0023] If the ACTS server uses the quasi-second method to send, the time correction time of the ACTS client is longer, so the error caused by the change of the delay is large in the timing process, and the quasi-second method cannot intelligently control the timing time, so Using the traditional algorithm to use the ACTS protocol for timing cannot control the ACTS accuracy well

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