公开(公告)号：US20230344735A1

公开(公告)日：2023-10-26

申请号：US17760248

申请日：2021-02-05

Applicant: Juniper Networks, Inc.

Inventor： Anders Bergsten ,  Andreas Johansson

IPC: H04L43/0864 ,  H04L43/106

CPC classification number: H04L43/0864 ,  H04L43/106

Abstract: A method is described for measuring a communication latency between a first device with a first local clock and a second device with a second local clock, the devices interconnected for digital communication to a network, comprising sending an upstream communication and a downstream communication between the devices, and measuring using said local clocks an upstream send time (τ1), an upstream receive time (τ2), a downstream send time (τ3) and a downstream receive time (τ4); calculating a first measured delay (y1) as τ2-τ1 and calculating a second measured delay (y2) as τ4-τ3; providing said measured delays (y1, y2) to a recursive filter function arranged to estimate a first latency (d1) and a second latency (d2) based on said measured delays (y1, y2) and on values for the first and second latencies (d1, d2) previously estimated by said recursive filter function, and iterating. The invention also relates to a system and computer software product.