公开(公告)号：US20210203578A1

公开(公告)日：2021-07-01

申请号：US17199773

申请日：2021-03-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tong Li ,  Kai Zheng ,  Shengjun Chen ,  Junsen Chen ,  Fanzhao Wang

IPC: H04L12/26 ,  H04L1/18

Abstract: A round-trip time (RTT) evaluation system includes sending, by a first device, a plurality of packets to a second device on a path, where each of the packets carries a timestamp indicating a sending time of a corresponding packet, determining, by the second device based on a statistical value of one-way delays (OWDs) of the packets, timestamps carried in the packets, sending, by the second device, an acknowledgements (ACKs) to the first device, where the ACKs include the timestamps and ACK time information, and determining, by the first device, measurement values of an RTT of the path based on the timestamps, the ACK time information, and times when the ACKs are received.

公开(公告)号：US11611498B2

公开(公告)日：2023-03-21

申请号：US17199773

申请日：2021-03-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tong Li ,  Kai Zheng ,  Shengjun Chen ,  Junsen Chen ,  Fanzhao Wang

IPC: H04L43/0864 ,  H04L1/18 ,  H04L43/04 ,  H04L43/0852 ,  H04L43/106 ,  H04L1/1867

Abstract: A round-trip time (RTT) evaluation system includes sending, by a first device, a plurality of packets to a second device on a path, where each of the packets carries a timestamp indicating a sending time of a corresponding packet, determining, by the second device based on a statistical value of one-way delays (OWDs) of the packets, timestamps carried in the packets, sending, by the second device, an acknowledgements (ACKs) to the first device, where the ACKs include the timestamps and ACK time information, and determining, by the first device, measurement values of an RTT of the path based on the timestamps, the ACK time information, and times when the ACKs are received.