公开(公告)号：US20250141782A1

公开(公告)日：2025-05-01

申请号：US18432312

申请日：2024-02-05

Applicant: Cisco Technology, Inc.

Inventor： Adee O. Ran

IPC: H04L45/24

Abstract: Techniques are provided to extend training to an end-to-end method, where a ready-to-send (RTS) variable is added to training frames to indicate that, on a current interface, the Physical Medium Attachment (PMA) sublayer, with all its lanes, has valid data and appropriate clock timing and is ready to send data to the output when training is completed. These techniques are applicable to a PMA that is an endpoint (and thus has only a single network interface involved) as well as to PMAs that have two network interfaces connected to segment partners. Moreover, these techniques may be configured to work with legacy devices that do not support segmented link training.

公开(公告)号：US20250096928A1

公开(公告)日：2025-03-20

申请号：US18969740

申请日：2024-12-05

Applicant: Cisco Technology, Inc.

Inventor： Adee O. Ran

IPC: H04L1/00

Abstract: Techniques are provided to provide modified bit sequences generated by the Physical Coding Sublayer (PCS) functional block in a way that considers the subsequent bit-mux operation of the Physical Media Attachment (PMA) sublayer functional block, in order to create symbol sequences for transmission over the physical channels with properties that optimize the performance of the Forward Error Correction (FEC) decoder with error bursts.

公开(公告)号：US20240014927A1

公开(公告)日：2024-01-11

申请号：US18085698

申请日：2022-12-21

Applicant: Cisco Technology, Inc.

Inventor： Adee O. Ran

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H04L1/0045

Abstract: Techniques are provided to provide modified bit sequences generated by the Physical Coding Sublayer (PCS) functional block in a way that considers the subsequent bit-mux operation of the Physical Media Attachment (PMA) sublayer functional block, in order to create symbol sequences for transmission over the physical channels with properties that optimize the performance of the Forward Error Correction (FEC) decoder with error bursts.

公开(公告)号：US11546007B1

公开(公告)日：2023-01-03

申请号：US17643102

申请日：2021-12-07

Applicant: Cisco Technology, Inc.

Inventor： Adee O. Ran ,  Joel Dror

IPC: H04B1/04 ,  H04L25/02

Abstract: A method includes transmitting, by a transmitter and over a transmit channel to a remote device, a signal that includes a plurality of signal points and receiving, by a receiver and over a receive channel from the remote device, a response signal that includes a plurality of response points corresponding to the plurality of signal points. The method also includes adjusting the plurality of signal points of the signal until logical values of the plurality of response points invert to produce an adjusted signal, estimating, based on the adjusted signal, a pulse response of the transmit channel, and applying equalization in the transmitter based on the estimated pulse response to reduce an effect of the pulse response on the signal.

公开(公告)号：US12231232B2

公开(公告)日：2025-02-18

申请号：US18085698

申请日：2022-12-21

Applicant: Cisco Technology, Inc.

Inventor： Adee O. Ran

IPC: H04L1/00

Abstract: Techniques are provided to provide modified bit sequences generated by the Physical Coding Sublayer (PCS) functional block in a way that considers the subsequent bit-mux operation of the Physical Media Attachment (PMA) sublayer functional block, in order to create symbol sequences for transmission over the physical channels with properties that optimize the performance of the Forward Error Correction (FEC) decoder with error bursts.

公开(公告)号：US12113651B2

公开(公告)日：2024-10-08

申请号：US17813234

申请日：2022-07-18

Applicant: Cisco Technology, Inc.

Inventor： Tomer Geva ,  Adee O. Ran ,  Liran Brecher ,  Eran Nussbaum

IPC: H04L25/03

CPC classification number: H04L25/03828

Abstract: Techniques and apparatus for optimizing transmitter equalization are described. An example technique includes capturing a single output signal transmitted from a port on at least one channel of a host device. An impulse response of the channel is determined based at least in part on the single output signal. A transmitter feedforward equalization (FFE) is generated, based at least in part on the impulse response of the channel. The transmitter FFE is applied to the channel of the port of the host device.