Data interface equalization adjustment method and apparatus, device, and storage medium

Patent metadata

Field	Value
Publication number	US-12438753-B2
Application number	US-202318521508-A
Country	US
Kind code	B2
Filing date	Nov 28, 2023
Priority date	May 31, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Embodiments of this application disclose a data interface equalization adjustment method and apparatus, a device, and a storage medium, and relate to the field of data interface technologies. The method includes: A second device determines equalization parameter indication information of a first transmitter TX on a first data interface. The second device sends a first equalization training sequence block ETSB to a corresponding RX on the first data interface through a TX on a second data interface, where the first ETSB carries the equalization parameter indication information and equalization target indication information, and the equalization target indication information indicates that the first TX is an equalization target. The first device determines the equalization target to be the first TX based on the equalization target indication information, and adjusts an equalization parameter of the first TX to an equalization parameter indicated by the equalization parameter indication information.

First claim

What is claimed is:

1. A data interface equalization adjustment method for a communication system, the data interface equalization adjustment method comprising:
determining, by a second device, equalization parameter indication information of a first transmitter (TX) on a first data interface, the communication system comprising a first device and the second device, the first device comprising the first data interface, the second device comprising a second data interface, the first data interface and the second data interface being connected over a link;
sending, by the second device, a first equalization training sequence block (ETSB) to a corresponding receiver (RX) on the first data interface through a TX on the second data interface, the first ETSB carrying the equalization parameter indication information and equalization target indication information, the equalization target indication information indicates that the first TX is an equalization target; and
determining, by the first device, the equalization target to be the first TX based on the equalization target indication information; and
adjusting an equalization parameter of the first TX to an equalization parameter indicated by the equalization parameter indication information.

2. The method according to claim 1 , wherein after the determining, by the first device, the equalization target to be the first TX based on the equalization target indication information, the method further comprises:
sending, by the first device, a target data stream to a corresponding RX on the second data interface through a TX on the first data interface; and
performing, by the second device, the determining, by the second device, the equalization parameter indication information of the first TX on the first data interface when determining, based on the target data stream, that a lane to which the first TX belongs does not meet a first data transmission condition.

3. The method according to claim 2 , wherein the determining, by the second device, the equalization parameter indication information of a first TX on the first data interface when determining, based on the target data stream, that the lane to which the first TX belongs does not meet the first data transmission condition comprises:
determining, by the second device based on the target data stream, a bit error rate of the lane to which the first TX belongs, and performing the determining, by the second device, the equalization parameter indication information of the first TX on the first data interface when determining that the bit error rate of the lane to which the first TX belongs is greater than a first threshold.

4. The method according to claim 2 , wherein after the sending, by the first device, a target data stream to the RX on the second data interface through the TX on the first data interface, the method comprises:
performing, by the second device based on the target data stream, adaptive equalization adjustment on the RX receiving the target data stream.

5. The method according to claim 1 , wherein the determining, by the second device, the equalization parameter indication information of the first TX on the first data interface comprises:
obtaining, by the second device, a to-be-used equalization parameter of the first TX from a stored first equalization parameter set; and
determining the equalization parameter indication information corresponding to the to-be-used equalization parameter of the first TX.

6. The method according to claim 1 , wherein the sending, by the second device, the first ETSB to the corresponding RX on the first data interface through the TX on the second data interface comprises:
splitting, by the second device, the first ETSB into a plurality of first data segments, wherein a quantity of first data segments obtained through the splitting is the same as a quantity of TXs on the second data interface; and
sending, by the second device, one first data segment in the plurality of first data segments to a corresponding RX on the first data interface through each TX on the second data interface according to an arrangement sequence of the TXs on the second data interface.

7. The method according to claim 6 , wherein before the performing, by the first device, equalization adjustment on a TX indicated by first equalization target indication information based on first equalization parameter indication information, the method further comprises:
concatenating, by the first device according to an arrangement sequence of RXs on the first data interface, the plurality of first data segments received, to obtain the first ETSB.

8. The method according to claim 1 , wherein the method further comprises:
sending, by the second device, a second ETSB to the RX on the first data interface through the TX on the second data interface; and
obtaining, by the first device, a to-be-used equalization parameter for each target RX receiving the second ETSB from a stored second equalization parameter set, and adjusting an equalization parameter of the target RX to the to-be-used equalization parameter of the target RX when determining that a lane to which the target RX belongs does not meet a second data transmission condition.

9. The method according to claim 8 , wherein the sending, by the second device, the second ETSB to the RX on the first data interface through the TX on the second data interface comprises:
splitting, by the second device, the second ETSB into a plurality of second data segments, wherein a quantity of second data segments obtained through the splitting is the same as a quantity of the TXs on the second data interface; and
sending, by the second device, one second data segment in the plurality of second data segments to a corresponding RX on the first data interface through each TX on the second data interface according to the arrangement sequence of the TXs on the second data interface.

10. The method according to claim 9 , wherein the obtaining, by the first device, the to-be-used equalization parameter for the each target RX receiving the second ETSB from the stored second equalization parameter set, and adjusting the equalization parameter of the target RX to the to-be-used equalization parameter of the target RX when determining that the lane to which the target RX belongs does not meet the second data transmission condition comprises:
obtaining, by the first device, the to-be-used equalization parameter for the each target RX receiving the second data segment from the stored second equalization parameter set, and adjusting the equalization parameter of the target RX to the to-be-used equalization parameter of the target RX when determining that the lane to which the target RX belongs does not meet the second data transmission condition.

11. The method according to claim 10 , wherein the obtaining, by the first device, the to-be-used equalization parameter of the target RX from the stored second equalization parameter set, and the adjusting the equalization parameter of the target RX to the to-be-used equalization parameter of the target RX when determining that the lane to which the target RX belongs does not meet the second data transmission condition comprises:
determining, by the first device, a bit error rate of the lane to which the target RX belongs based on the second data segment received by the target RX, obtaining the to-be-used equalization parameter of the target RX from the stored second equalization parameter set, and adjusting the equalization parameter of the target RX to the to-be-used equalization parameter of the target RX when determining the bit error rate of the lane to which the target RX belongs to be greater than a second thresh

Assignees

• Huawei Tech Co Ltd

Inventors

• Xu Shibin
• Wang Kejian
• Luo Fei
• Li Jiankang

Classifications

• H04L1/0033

  arrangements specific to the transmitter · CPC title

• H04L1/0023 Primary

  characterised by the signalling · CPC title

• H04L12/40

  Bus networks · CPC title

• H04L1/203

  Details of error rate determination, e.g. BER, FER or WER · CPC title

• H04L25/03019

  adaptive, i.e. capable of adjustment during data reception · CPC title