Ethernet link transmit power method based on network provided alien crosstalk feedback

Patent metadata

Field	Value
Publication number	US-11228340-B1
Application number	US-201916554036-A
Country	US
Kind code	B1
Filing date	Aug 28, 2019
Priority date	Aug 28, 2019
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A method of operation on an Ethernet network having multiple Ethernet links interconnected via a network device. The method includes detecting installation of a new Ethernet link in the Ethernet network utilizing the network device. A link training process is then initiated for the new Ethernet link. The link training process includes transmitting training data at a first transmit power level and first data rate to a link partner during a data transfer interval. Network feedback information is then accessed, including performance metrics associated with the multiple Ethernet links during the training data transfer interval. The first data rate and/or first transmit power level are then adjusted to an adjusted second data rate and/or second transmit power level based on the network feedback information.

First claim

We claim:

1. A method of operation on an Ethernet network having multiple Ethernet links interconnected via a network device, the method comprising:
detecting installation of a new Ethernet link in the Ethernet network utilizing the network device;
accessing baseline performance metrics collected by a service provider, the baseline performance metrics associated with the multiple Ethernet links of the Ethernet network,
initiating a link training process for the new Ethernet link, the link training process including transmitting training data at a first transmit power level and first data rate to a link partner during a training data transfer interval;
accessing network feedback information including updated performance metrics associated with the multiple Ethernet links, the updated performance metrics generated during the training data transfer interval;
after the transmitting training data, comparing the baseline performance metrics to the updated performance metrics; and
adjusting the first data rate and/or first transmit power level to an adjusted second data rate and/or second transmit power level based on the comparing.

2. The method of claim 1 , wherein the link training process further comprises:
establishing the first transmit power level and the first data rate based on the baseline performance metrics.

3. The method of claim 1 , wherein the comparing further comprises:
iteratively adjusting the data rate and/or transmit power level based on iterative comparisons of iteratively obtained network feedback information to the baseline performance metrics.

4. The method of claim 1 , wherein the detecting installation of a new Ethernet link in the Ethernet network utilizing the network device comprising:
detecting installation of a new Ethernet link in the Ethernet network utilizing a network switch.

5. The method of claim 4 , further comprising:
controlling the network switch via a network service provider.

6. The method of claim 1 , wherein accessing baseline performance metrics associated with multiple Ethernet links of the Ethernet network comprises:
accessing at least one performance metric from the group of performance metrics comprising packet errors, signal-to-noise ratio (SNR), average Low Density Parity Check (LDPC) values, LDPC iteration counts, Cyclic Redundancy Check (CRC) errors, and measured alien crosstalk.

7. The method of claim 1 , wherein the accessing network feedback information comprises:
accessing network information that indicates the occurrence or absence of an event occurring as a result of alien crosstalk during the training data transfer interval.

8. The method of claim 7 , wherein the accessing network feedback information comprises:
accessing network information comprising at least one from the group comprising an indicator of a neighboring link fail and an indicator of a retraining sequence for a neighboring link.

9. A network switch, comprising:
multiple Ethernet ports, each of the multiple Ethernet ports including an interface to collect performance metrics associated with a corresponding Ethernet link; and
a link training manager, in response to detecting a new link installation, configured to:
access baseline performance metrics collected by a service provider, the baseline performance metrics associated with the multiple Ethernet links of the Ethernet network,
initiate a link training process for the new Ethernet link, the link training process including transmitting training data at a first transmit power level and first data rate to a link partner during a training data transfer interval;
access network feedback information including updated performance metrics associated with the multiple Ethernet links, the updated performance metrics generated during the training data transfer interval;
subsequent to the transmitting the training data, compare the baseline performance metrics to the updated performance metrics; and
adjust the first data rate and/or first transmit power level to an adjusted second data rate and/or second transmit power level based on the comparing.

10. The network switch according to claim 9 , wherein the link training manager, in response to detecting a new network link installation, is configured to:
access the network feedback information in the form of at least one from the group comprising packet errors, signal-to-noise ratio (SNR), average Low Density Parity Check (LDPC) values, LDPC iteration counts, Cyclic Redundancy Check (CRC) errors, and measured alien crosstalk.

11. The network switch according to claim 9 , wherein the link training manager, in response to detecting a new network link installation, is configured to:
adjust the first data rate and/or first transmit power level to an adjusted second data rate and/or second transmit power level based on network feedback information that indicates the occurrence of absence of an event occurring as a result of alien crosstalk during the training data transfer interval.

12. The network switch according to claim 11 , wherein the link training manager, in response to detecting a new network link installation, is configured to:
access the network feedback information in the form of at least one from the group comprising an indicator of a neighboring link fail and an indicator of a retraining sequence for a neighboring link.

13. The network switch according to claim 11 , wherein the link training manager, in response to detecting a new network link installation, is configured to:
iteratively adjust the data rate and/or transmit power level based on iterative comparisons of iteratively obtained network feedback information to the baseline performance metrics.

14. A method of operating a network switch, the Ethernet switch including multiple Ethernet ports for interfacing with multiple Ethernet links, the method comprising:
detecting installation of a new Ethernet link into one of the multiple Ethernet ports;
accessing baseline performance metrics collected by a service provider, the baseline performance metrics associated with the multiple Ethernet links of the Ethernet network,
initiating a link training process for the new Ethernet link, the link training process including transmitting training data at a first transmit power level and first data rate to a link partner during a training data transfer interval;
accessing network feedback information including updated performance metrics associated with the multiple Ethernet ports, the updated performance metrics generated during the training data transfer interval;
after the transmitting training data, comparing the baseline performance metrics to the updated performance metrics; and
adjusting the first data rate and/or first transmit power level to an adjusted second data rate and/or second transmit power level based on the comparing.

15. The method of claim 14 , wherein the accessing baseline performance metrics associated with multiple Ethernet links comprises: accessing at least one performance metric from the group of performance metrics comprising packet errors, signal-to-noise ratio (SNR), average Low Density Parity Check (LDPC) values, LDPC iteration counts, Cyclic Redundancy Check (CRC) errors, and measured alien crosstalk.

Assignees

• Aquantia Corp
• Marvell Asia Pte Ltd

Inventors

• Lim Konghoei Susanto
• Razavi Majomard Seid Alireza
• Shen David

Classifications

• H04B3/487

  Testing crosstalk effects · CPC title

• H04B3/48

  Testing attenuation (H04B3/466 takes precedence) · CPC title

• H04B3/32 Primary

  Reducing cross-talk, e.g. by compensating · CPC title