US 2002/0154352 A1 · Data transmission rate arbitration method and optical communication apparatus

Abstract

A transmitting-end device 1 generates a pilot signal by means of a pilot signal generation section 14, and transmits a pilot signal to a receiving-end device 2. At the receiving-end device 2, a transmission rate modification section 24 detects the transmission band of an optical transmission line 3 based on the amplitude of the pilot signal, and decides a data transmission rate acceptable to the receiving-end device 2 by taking into account the transmission band of the optical transmission line 3. Based on a maximum data transmission data acceptable to the transmitting-end device 1 and the data transmission rate thus decided, a control section 22 in the receiving-end device 2 arbitrates a data transmission rate between the transmitting-end device 1 and the control section 12.

Claims14

Dependent claims

In an optical communication system for performing a data transmission between devices via an optical transmission line, a method for arbitrating a data transmission rate between devices before performing the data transmission, the method comprising:

a step of detecting a transmission band of the optical transmission line;
a step of detecting a slower one of maximum data transmission rates acceptable to two devices between which a data transmission is performed;
and
a step of designating a data transmission rate as a data transmission rate for the data transmission, the data transmission rate being within the detected transmission band of the optical transmission line and equal to or less than the detected slower maximum data transmission rate.

1 more element

An optical communication apparatus for performing a data transmission with another device via an optical transmission line, wherein the optical communication apparatus arbitrates a data transmission rate between itself and the other device before performing the data transmission, comprising:

a transmission band detection section for detecting a transmission band of the optical transmission line;
an arbitration section for arbitrating a data transmission rate between the optical communication apparatus and the other device to ensure that the data transmission is performed at a data transmission rate which is equal to or less than a slower one of maximum data transmission rates acceptable to the optical communication apparatus and the other device;
and
a transmission rate restriction section for restricting the arbitration made by the arbitration section based on the transmission band detected by the transmission band detection section so that the arbitrated data transmission rate is within the transmission band detected by the transmission band detection section.

1 more element

Dependencies are inferred from the claim text.

Data transmission rate arbitration method and optical communication apparatus

Life of this patent

Data transmission rate arbitration method and optical communication apparatus

Life of this patent

Abstract

Claims14