Velocity detection method and device

Abstract

Embodiments of the invention relate to a velocity detection method and a device, wherein the method comprises the following steps: filtering received signals to obtain a frequency component; comparing the frequency component with a threshold value, and outputting a velocity indicating signal according to the comparison result. The device comprises a filter processing module which is used for filtering the received signals to obtaining the frequency component; a comparison module which is used for comparing the frequency component with the threshold value; and a velocity judging logic module which is used for outputting the velocity indicating signal according to the comparison result. The embodiments perform filtering process to the received signals according to spectral distribution characteristics of the received signals so as to obtain the frequency component, and compare the frequency component with the threshold value so as to determine the velocity indicating signal. The velocity detection method and the device are suitable for the synchronous lead code re-defined by the 10G EPON standard.

Description

technical field [0001] Embodiments of the present invention relate to optical network technologies, and in particular to a rate detection method and device. Background technique [0002] Fiber-in and copper-out is an inevitable trend in the development of wired access technology. With the development of Ethernet based Passive Optical Network (EPON) and Gigabit-capable Passive Optical GPON) technology is becoming more and more mature and popular in the global market, and operators and equipment manufacturers are actively conducting research on the next-generation Passive Optical Network (PON) technology. As one of the mainstream technologies in the next-generation PON, 10G EPON has attracted extensive attention from researchers, and its physical layer standard has matured. [0003] The coexistence of 10G EPON and the existing Gigabit-capable EPON (GEPON for short) is an inevitable requirement in the evolution process, and GEPON is 1G EPON. In this article, the communication...

AI Technical Summary

Problems solved by technology

[0004] The existing technology provides a rate detection circuit that can only detect the rate of the working signal of this channel. If the dual rate indication of 10G and 1G is to be realized, two parts of the circuit need to be implemented together, which makes the implementation of the hardware circuit complicated and the cost is relatively high. high

Moreover, the rate detection method of this circuit is based on the traditional 0101 preamble, which will be invalid under the latest synchronous preamble defined in the 10G EPON standard

[0005] The existing technology also provides a method for detecting the signal rate of the corresponding channel through a 1G bit-rate discrimination circuit (BDC for short) and a 10G BDC respectively on the 1G / 10G two channels. Applicable to the 0101 preamble, and will be invalid under the latest synchronous preamble defined by the 10G EPON standard

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