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1. CA2971353 - PROCEDE DE DETECTION DE CHANGEMENTS DE TRANSITOIRE A ECHANTILLONNAGE ADAPTATIF ET DETECTEUR METTANT EN ƒUVRE LE PROCEDE

Office
Canada
Numéro de la demande 2971353
Date de la demande
Numéro de publication 2971353
Date de publication 30.06.2016
Type de publication A1
CIB
G06F 17/18
GPHYSIQUE
06CALCUL; COMPTAGE
FTRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES
17Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des fonctions spécifiques
10Opérations mathématiques complexes
18pour l'évaluation de données statistiques
CPC
G06F 17/18
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
18for evaluating statistical data ; , e.g. average values, frequency distributions, probability functions, regression analysis
G06F 17/15
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
15Correlation function computation ; including computation of convolution operations
H04B 1/70752
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
7073Synchronisation aspects
7075with code phase acquisition
70751using partial detection
70752Partial correlation
H04L 7/042
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
04Speed or phase control by synchronisation signals
041using special codes as synchronising signal
042Detectors therefor, e.g. correlators, state machines
H04L 43/024
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
43Arrangements for monitoring or testing packet switching networks
02involving a reduction of monitoring data
022using sampling of monitoring data, i.e. storing only a selection of packets
024using adaptive sampling
Déposants INSTITUT MINES-TELECOM
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Titre
(EN) METHOD FOR TRANSIENT CHANGE DETECTION WITH ADAPTIVE SAMPLING, AND DETECTOR IMPLEMENTING THE METHOD
(FR) PROCEDE DE DETECTION DE CHANGEMENTS DE TRANSITOIRE A ECHANTILLONNAGE ADAPTATIF ET DETECTEUR METTANT EN ƒUVRE LE PROCEDE
Abrégé
(EN)
The invention relates to a method of detecting transient changes in the distribution of a discrete time series, comprising the steps of: - 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, switching 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; wherein a sniff period is ended as soon as the analyzing of the captured samples in a test phase of the sniff period is negative, the sampling of the time series being stopped until the next sniff period; and wherein a next test phase of a sniff period is performed only if the result of the previous test phase of the sniff period is positive, the next test phase being performed with capturing and analyzing at least as many samples as the previous test phase.

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