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Optical interface speed auto-negotiation method and device

A self-negotiation and rate technology, applied in the field of optical transmission, can solve the problem of poor flexibility in system rate configuration and achieve good flexibility

Inactive Publication Date: 2012-02-01
ZTE CORP
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Problems solved by technology

[0005] In order to solve the problem in the prior art that the rate configuration of one end is fixed when the devices using optical ports to communicate with each other are used for rate configuration, the system rate configuration flexibility is poor, the present invention provides a method and device for auto-negotiation of the rate of optical ports

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  • Optical interface speed auto-negotiation method and device
  • Optical interface speed auto-negotiation method and device

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Embodiment Construction

[0020] The technical solution of the embodiment of the present invention will now be described in detail in conjunction with the drawings of the description. In order to solve the problem that the rate configuration of the system is less flexible due to the fixed rate at one end when the devices using optical ports to communicate with each other perform rate configuration, the receiver needs to receive For the handshake optical signal sent by the sender, the sender sends data within a certain period of time after sending the handshake optical signal. After receiving the handshake optical signal, the receiver selects from multiple rates supported by the optical port, selects a rate, and sends it according to the pre-set strategy. The rate at which the end sends data is the same as the selected rate. The receiver synchronizes with the data sent by the sender according to the time of receiving the handshake optical signal, and receives data at the selected rate. After receiving the...

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Abstract

The invention relates to the field of optical transmission and particularly relates to an optical interface speed auto-negotiation method and a device. In the prior art, since the speed of one end of fixed when speed configuration is conducted to equipment using optical interfaces for mutual communication, the problem that system speed configuration flexibility is poor exists. The method comprises the steps that two ends shake hands through optical signals to conduct auto-negotiation synchronization, speed configuration is conducted according to a speed selected from multiple speeds, data is received according to the configured speed at the same time, the data transmitting speed of a transmitting end is equal to the configured speed, the received data is analyzed, whether the speed auto-negotiation is successful or not is judged according to an analysis result, and if the analysis result is that the received data is correct, the speed auto-negotiation is successful. By adopting the scheme, since the speed can be selected from the multiple speeds to actively conduct optical interface auto-negotiation, the system speed configuration flexibility is good.

Description

technical field [0001] The invention relates to the field of optical transmission, in particular to a method and device for auto-negotiation of the rate of an optical port. Background technique [0002] At present, some devices that use optical ports for communication can communicate with each other at a variety of data rates. For example, a base station for wireless communication mainly uses a baseband unit (BBU) and a remote radio unit (RRU). Through optical fiber interconnection, the communication protocol generally uses the CPRI protocol. The CPRI protocol can support multiple data rates, including: 614.4Mbit / s, 1228.8Mbit / s, 2457.6Mbit / s, 3072Mbit / s, 4915.6Mbit / s, 6144Mbit / s. [0003] To communicate between the BBU and the RRU, a physical layer connection must first be established on the optical interface between the BBU and the RRU. When the BBU and RRU have multiple standard rate interfaces, the current technology is to fix the rate at one end and passively configur...

Claims

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Application Information

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IPC IPC(8): H04B10/12
CPCH04W88/085
Inventor 董耀荣
Owner ZTE CORP
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