公开(公告)号：US20170353293A1

公开(公告)日：2017-12-07

申请号：US15539001

申请日：2014-12-24

Applicant: INSTITUT MINES-TELECOM ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Venkat Chandar ,  Aslan Tchamkerten

IPC: H04L7/04 ,  G06F17/15 ,  H04B1/7075 ,  H04L12/26

CPC classification number: H04L7/042 ,  G06F17/15 ,  G06F17/18 ,  H04B1/70752 ,  H04L43/024

Abstract: A method of detecting transient changes in the distribution of a discrete time series includes: operating in a sparse mode wherein, at sniff periods successively repeated at a first rate, at most K test phases are performed, K being an integer superior or equal to two, each test phase consisting of analyzing, by a sampling stopping time determination unit, samples of the time series captured by a sampler at sampling times according to a second rate which is higher than the first rate to provide a positive or negative result of the test phase. If the results of K successive test phases of a sniff period are each positive, the method switches to operate in a dense mode wherein the sampler is operated to continuously capture samples of the time series at sampling times according to the second sampling rate.

公开(公告)号：US10116434B2

公开(公告)日：2018-10-30

申请号：US15539001

申请日：2014-12-24

Applicant: INSTITUT MINES-TELECOM ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Venkat Chandar ,  Aslan Tchamkerten

IPC: H04L27/06 ,  H04L7/04 ,  H04L12/26 ,  H04B1/7075 ,  G06F17/15

Abstract: A method of detecting transient changes in the distribution of a discrete time series includes: operating in a sparse mode wherein, at sniff periods successively repeated at a first rate, at most K test phases are performed, K being an integer superior or equal to two, each test phase consisting of analyzing, by a sampling stopping time determination unit, samples of the time series captured by a sampler at sampling times according to a second rate which is higher than the first rate to provide a positive or negative result of the test phase. If the results of K successive test phases of a sniff period are each positive, the method switches to operate in a dense mode wherein the sampler is operated to continuously capture samples of the time series at sampling times according to the second sampling rate.