An apparatus for generating a mosaic for a wireless communication system. The apparatus includes memory and a server. The server is programmed to receive first information from an associated access point that is indicative of a first receiver time stamp and a second receiver time stamp. The server is further programmed to determine a first difference between the first receiver time stamp and the second receiver time stamp to generate a first difference value and to receive second information that is indicative of a third receiver time stamp and a fourth receiver time stamp. The server is further programmed to determine a second difference and to generate a second difference value. The server is further programmed to determine that packets as transmitted by the mobile device are the same based on the first difference value and the second difference value being within a predetermined receiver time error range.
In at least one embodiment, a system for enabling an electronic transaction for a purchase based on wireless communication is provided. The system includes at least one transceiver and an electronic authentication card. The electronic authentication card includes the at least one transceiver to initiate a purchase for a user. The electronic authentication card is programmed to wirelessly receive a plurality of wireless signals from at least one transmitter and process the plurality of wireless signals to generate first information indicative of a location of the electronic authentication card. The electronic authentication card is further programmed to wirelessly transmit the first information to a server and to wirelessly receive location coordinates from the server identifying the location of the electronic authentication card based on the first information.
G06Q 20/20 - Systèmes de réseaux présents sur les points de vente
G06Q 20/34 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des cartes, p. ex. cartes à puces ou cartes magnétiques
G06Q 20/40 - Autorisation, p. ex. identification du payeur ou du bénéficiaire, vérification des références du client ou du magasinExamen et approbation des payeurs, p. ex. contrôle des lignes de crédit ou des listes négatives
H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
A method for communication includes simultaneously transmitting over a wireless network from a first station (28) to a second station (26) at least first and second request-to-send (RTS) frames in different, respective first and second frequency channels. The first station receives first and second clear-to-send (CTS) frames transmitted in the first and second frequency channels, respectively, by the second station over the wireless network in response to the first and second RTS frames. At least one property associated with the first station is estimated by processing information extracted from both the first and second received CTS frames.
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]
4.
Anonymous collection of broadband directional transmissions
A method for communication includes simultaneously transmitting over a wireless network from a first station to a second station at least first and second request-to-send (RTS) frames in different, respective first and second frequency channels. The first station receives first and second clear-to-send (CTS) frames transmitted in the first and second frequency channels, respectively, by the second station over the wireless network in response to the first and second RTS frames. At least one property associated with the first station is estimated by processing information extracted from both the first and second received CTS frames.
An apparatus for generating a mosaic for a wireless communication system. The apparatus includes memory and a server. The server is programmed to receive first information from an associated access point that is indicative of a first receiver time stamp and a second receiver time stamp. The server is further programmed to determine a first difference between the first receiver time stamp and the second receiver time stamp to generate a first difference value and to receive second information that is indicative of a third receiver time stamp and a fourth receiver time stamp. The server is further programmed to determine a second difference and to generate a second difference value. The server is further programmed to determine that packets as transmitted by the mobile device are the same based on the first difference value and the second difference value being within a predetermined receiver time error range.
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
H04W 4/02 - Services utilisant des informations de localisation
H04L 67/52 - Services réseau spécialement adaptés à l'emplacement du terminal utilisateur
H04L 69/28 - Minuteurs ou mécanismes de chronométrage utilisés dans les protocoles
G01S 3/46 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours
G01S 3/50 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours les ondes arrivant aux antennes étant modulées en impulsion et le temps de leur arrivée étant mesuré
G01S 5/04 - Position de source déterminée par plusieurs radiogoniomètres espacés
An apparatus for generating a mosaic for a wireless communication system. The apparatus includes memory and a server. The server is programmed to receive first information from an associated access point that is indicative of a first receiver time stamp and a second receiver time stamp. The server is further programmed to determine a first difference between the first receiver time stamp and the second receiver time stamp to generate a first difference value and to receive second information that is indicative of a third receiver time stamp and a fourth receiver time stamp. The server is further programmed to determine a second difference and to generate a second difference value. The server is further programmed to determine that packets as transmitted by the mobile device are the same based on the first difference value and the second difference value being within a predetermined receiver time error range.
A method for communication includes identifying a media access control (MAC) address of a mobile station (28) of interest. Independently of receiving any probe request frame from the mobile station, a probe response frame addressed to the identified MAC address is transmitted over a wireless local area network (WLAN). An acknowledgment of the probe response frame is received from the mobile station and is used in ascertaining a location of the mobile station.
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
H04W 8/00 - Gestion de données relatives au réseau
H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
G01S 5/04 - Position de source déterminée par plusieurs radiogoniomètres espacés
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
8.
Rapid detection of mobile station locations using Wi-Fi
A method for communication includes identifying a media access control (MAC) address of a mobile station of interest. Independently of receiving any probe request frame from the mobile station, a probe response frame addressed to the identified MAC address is transmitted over a wireless local area network (WLAN). An acknowledgment of the probe response frame is received from the mobile station and is used in ascertaining a location of the mobile station.
A method for signal processing includes receiving via first and second antennas (34) respective first and second input signals in response to an output signal that is transmitted from a wireless transmitter (27, 28, 30) and encodes a predefined sequence of symbols. A temporal correlation function is computed over the first and second input signals with respect to one or more of the symbols in the predefined sequence so as to identify respective first and second correlation peaks and extract respective first and second carrier phases of the first and second input signals at the first and second correlation peaks. A phase difference between the first and second signals is measured based on a difference between the first and second carrier phases extracted at the first and second correlation peaks. Based on the measured phase difference, an angle of arrival of the output signal from the wireless transmitter is estimated. There is additionally provided, in accordance with an embodiment of the invention, a method for location finding, which includes receiving radio signals transmitted between a plurality of fixed transceivers having multiple antennas at different, respective first locations and a mobile transceiver at a second location. A respective phase difference is detected between the received radio signals that are associated with each of the multiple antennas of each of the fixed transceivers. Multiple loci are computed, corresponding respectively to respective angles between each of the fixed transceivers and the mobile transceiver based on the respective phase differences. Location coordinates of the mobile transceiver are found based on the angles and the transmit locations of the transmitters by identifying an intersection of the loci as the second location of the mobile transceiver.
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
G01S 3/50 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours les ondes arrivant aux antennes étant modulées en impulsion et le temps de leur arrivée étant mesuré
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
G01S 5/08 - Position d'un radiogoniomètre unique obtenue par détermination de la direction de plusieurs sources espacées d'emplacement connu
A method for communication includes detecting, at a first station in a wireless network, a beacon transmitted over the wireless network by a second station having multiple antennas. In response to the beacon, a request-to-send (RTS) frame is transmitted over the wireless network using a multi-carrier modulation scheme from the first station to the second station. The first station receives a clear-to-send (CTS) frame transmitted over the wireless network, in response to the RTS frame, by the second station via the multiple antennas using the multi-carrier modulation scheme, and estimates a property of the first station based on the received CTS frame.
H04W 74/0816 - Accès non planifié, p. ex. ALOHA utilisant une détection de porteuse, p. ex. accès multiple par détection de porteuse [CSMA] avec évitement de collision
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]
H04L 101/622 - Adresses de couche 2, p. ex. adresses de contrôle d'accès au support [MAC]
11.
APPARATUS, SYSTEM AND METHOD FOR PROVIDING LOCATIONING MULTIPATH MITIGATION
In at least one embodiment, a system for providing locationing multipath mitigation for wireless communication is provided. The system includes a receiver having at least one controller. The at least one controller is programmed to; receive a first narrowband wireless signal including a predetermined symbol from a transmitter across a wideband transmission channel that exhibits a multipath condition and additive noise, the first narrowband wireless signal being convoluted with the wideband channel to form a first received signal and to perform autocorrelation on the first received signal to extract the predetermined symbol. The at least one controller is further configured to filter the extracted predetermined symbol to deconvolve the first received signal to minimize the effects of the multipath condition and the additive noise to provide a first deconvoluted signal.
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
G01S 5/10 - Position du récepteur obtenue par coordination de plusieurs lignes de position définies par des mesures de différence de parcours
G01S 5/08 - Position d'un radiogoniomètre unique obtenue par détermination de la direction de plusieurs sources espacées d'emplacement connu
12.
Apparatus, system and method for providing locationing multipath mitigation
In at least one embodiment, a system for providing locationing multipath mitigation for wireless communication is provided. The system includes a receiver having at least one controller. The at least one controller is programmed to; receive a first narrowband wireless signal including a predetermined symbol from a transmitter across a wideband transmission channel that exhibits a multipath condition and additive noise, the first narrowband wireless signal being convoluted with the wideband channel to form a first received signal and to perform autocorrelation on the first received signal to extract the predetermined symbol. The at least one controller is further configured to filter the extracted predetermined symbol to deconvolve the first received signal to minimize the effects of the multipath condition and the additive noise to provide a first deconvoluted signal.
In at least one embodiment, a system for enabling an electronic transaction for a purchase based on wireless communication is provided. The system includes at least one transceiver and an electronic authentication card. The electronic authentication card includes the at least one transceiver to initiate a purchase for a user. The electronic authentication card is programmed to wirelessly receive a plurality of wireless signals from at least one transmitter and process the plurality of wireless signals to generate first information indicative of a location of the electronic authentication card. The electronic authentication card is further programmed to wirelessly transmit the first information to a server and to wirelessly receive location coordinates from the server identifying the location of the electronic authentication card based on the first information.
G06Q 20/32 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des dispositifs sans fil
G06Q 20/40 - Autorisation, p. ex. identification du payeur ou du bénéficiaire, vérification des références du client ou du magasinExamen et approbation des payeurs, p. ex. contrôle des lignes de crédit ou des listes négatives
G06Q 20/34 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des cartes, p. ex. cartes à puces ou cartes magnétiques
G06Q 20/24 - Schémas de crédit, c.-à-d. de "paiement différé"
G01S 3/46 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
H04W 4/02 - Services utilisant des informations de localisation
G06Q 10/08 - Logistique, p. ex. entreposage, chargement ou distributionGestion d’inventaires ou de stocks
A method for signal processing includes receiving at a given location at least first and second signals transmitted respectively from at least first and second antennas (34) of a wireless transmitter (24). The at least first and second signals encode identical data using a multi-carrier encoding scheme with a predefined cyclic delay between the transmitted signals. The received first and second signals are processed, using the cyclic delay, in order to derive a measure of a phase delay between the first and second signals. Based on the measure of the phase delay, an angle of departure (θ) of the first and second signals from the wireless transmitter to the given location is estimated.
H04W 24/00 - Dispositions de supervision, de contrôle ou de test
G01S 1/20 - Systèmes pour déterminer une direction ou une ligne de position en comparant les temps de transit de signaux synchronisés provenant d'antennes non directionnelles ou de systèmes d'antennes séparés, c.-à-d. systèmes à différence de parcours
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
G01S 5/08 - Position d'un radiogoniomètre unique obtenue par détermination de la direction de plusieurs sources espacées d'emplacement connu
15.
System, apparatus, and/or method for determining a time of flight for one or more receivers and transmitters
In at least one embodiment, a system for wireless communication is provided. The system includes a first transceiver and a first mobile device. The first mobile device includes the first transceiver and is programmed to receive a first wireless signal and a second wireless signal and to process the first wireless signal and the second wireless signal based on a first internal clock associated with the first mobile device. The first mobile device is further programmed to determine a time of arrival (TOA) of the first wireless signal to provide a first TOA signal and to determine the TOA of the second wireless signal to provide a second TOA signal. The first mobile device is further programmed to obtain a difference between the first TOA signal and the second TOA signal to provide a first difference TOA signal that is independent of the first internal clock.
G01S 5/12 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques en coordonnant des lignes de position de formes différentes, p. ex. hyperboliques, circulaires, elliptiques ou radiales
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
16.
SYSTEM, APPARATUS, AND/OR METHOD FOR PROVIDING WIRELESS COMMUNICATION AND A LOCATION TAG
In at least one embodiment, a system for wireless communication is provided. The system includes a first transceiver and a first mobile device. The first mobile device includes the first transceiver and is programmed to receive a first wireless signal and a second wireless signal and to process the first wireless signal and the second wireless signal based on a first internal clock associated with the first mobile device. The first mobile device is further programmed to determine a time of arrival (TOA) of the first wireless signal to provide a first TOA signal and to determine the TOA of the second wireless signal to provide a second TOA signal (406). The first mobile device is further programmed to obtain a difference between the first TOA signal and the second TOA signal to provide a first difference TOA signal that is independent of the first internal clock (408).
A method for communication includes detecting, at a first station in a wireless network, a beacon transmitted over the wireless network by a second station having multiple antennas. In response to the beacon, a request-to-send (RTS) frame is transmitted over the wireless network using a multi-carrier modulation scheme from the first station to the second station. The first station receives a clear-to-send (CTS) frame transmitted over the wireless network, in response to the RTS frame, by the second station via the multiple antennas using the multi-carrier modulation scheme, and estimates an angle of transmission from the second station to the first station based on the received CTS frame.
A method for communication includes detecting, at a first station (28) in a wireless network, a beacon transmitted over the wireless network by a second station (24) having multiple antennas (34). In response to the beacon, a request-to-send (RTS) frame is transmitted over the wireless network using a multi-carrier modulation scheme from the first station to the second station. The first station receives a clear-to-send (CTS) frame transmitted over the wireless network, in response to the RTS frame, by the second station via the multiple antennas using the multi-carrier modulation scheme, and estimates an angle of transmission from the second station to the first station based on the received CTS frame.
H04W 4/02 - Services utilisant des informations de localisation
H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]
G01S 3/02 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes radio
G01S 1/08 - Systèmes pour déterminer une direction ou une ligne de position
19.
SYSTEM, APPARATUS, AND METHOD FOR PROVIDING WIRELESS COMMUNICATION AND A LOCATION TAG
In at least one embodiment, an apparatus for wireless communication is provided. The apparatus includes a transceiver, a dedicated modem, a frequency converter, at least one controller and a bus. The transceiver receives a first wireless signal associated with a first predefined wireless communication standard and a second wireless signal associated with a second predefined wireless communication standard. The dedicated modem is capable of processing the first wireless signal. The frequency converter down converts a second frequency of the second wireless signal. The controller receives data on the second wireless signal and processes the data on the second wireless signal. The bus is configured to divert the data from the second wireless signal from being received at the dedicated modem by directly transmitting the data from the second wireless signal to memory. The controller is further programmed to access the memory for processing the data on the second wireless signal.
H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
H04B 1/403 - Circuits utilisant le même oscillateur pour générer à la fois la fréquence de l’émetteur et la fréquence de l’oscillateur local du récepteur
20.
System, apparatus, and method for providing wireless communication and a location tag
In at least one embodiment, an apparatus for wireless communication is provided. The apparatus includes a transceiver, a dedicated modem, a frequency converter, at least one controller and a bus. The transceiver receives a first wireless signal associated with a first predefined wireless communication standard and a second wireless signal associated with a second predefined wireless communication standard. The dedicated modem is capable of processing the first wireless signal. The frequency converter down converts a second frequency of the second wireless signal. The controller receives data on the second wireless signal and processes the data on the second wireless signal. The bus is configured to divert the data from the second wireless signal from being received at the dedicated modem by directly transmitting the data from the second wireless signal to memory. The controller is further programmed to access the memory for processing the data on the second wireless signal.
H04W 88/06 - Dispositifs terminaux adapté au fonctionnement dans des réseaux multiples, p. ex. terminaux multi-mode
H04B 1/403 - Circuits utilisant le même oscillateur pour générer à la fois la fréquence de l’émetteur et la fréquence de l’oscillateur local du récepteur
H04L 29/12 - Dispositions, appareils, circuits ou systèmes non couverts par un seul des groupes caractérisés par le terminal de données
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
A method for signal processing includes receiving via first and second antennas (34) respective first and second input signals in response to an output signal that is transmitted from a wireless transmitter (27, 28, 30) and encodes a predefined sequence of symbols. A temporal correlation function is computed over the first and second input signals with respect to one or more of the symbols in the predefined sequence so as to identify respective first and second correlation peaks and extract respective first and second carrier phases of the first and second input signals at the first and second correlation peaks. A phase difference between the first and second signals is measured based on a difference between the first and second carrier phases extracted at the first and second correlation peaks. Based on the measured phase difference, an angle of arrival of the output signal from the wireless transmitter is estimated. There is additionally provided, in accordance with an embodiment of the invention, a method for location finding, which includes receiving radio signals transmitted between a plurality of fixed transceivers having multiple antennas at different, respective first locations and a mobile transceiver at a second location. A respective phase difference is detected between the received radio signals that are associated with each of the multiple antennas of each of the fixed transceivers. Multiple loci are computed, corresponding respectively to respective angles between each of the fixed transceivers and the mobile transceiver based on the respective phase differences. Location coordinates of the mobile transceiver are found based on the angles and the transmit locations of the transmitters by identifying an intersection of the loci as the second location of the mobile transceiver.
G01S 3/46 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours
H04W 64/00 - Localisation d'utilisateurs ou de terminaux pour la gestion du réseau, p. ex. gestion de la mobilité
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 3/48 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée en utilisant des antennes espacées et en mesurant la différence de phase ou de temps entre les signaux venant de ces antennes, c.-à-d. systèmes à différence de parcours les ondes arrivant aux antennes étant continues ou intermittentes et la différence de phase entre les signaux provenant de ces antennes étant mesurée
09 - Appareils et instruments scientifiques et électriques
Produits et services
Computer software and hardware for the collection,
processing, compilation, transmission and dissemination of
positioning data; electronic positioning apparatus and
instruments; electronic tracking apparatus and instruments;
personnel tracking devices; article tracking devices; pet
tracking devices; vehicle tracking devices; electronic
devices for locating and tracking articles, people and pets,
using wireless networks.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Downloadable and recorded computer software and computer hardware for the collection, processing, compilation, transmission and dissemination of positioning data; electronic positioning apparatus and instruments; electronic tracking apparatus and instruments for locating and tracking people, vehicles, pets, and things, using radio frequency, wireless communication networks, and tracking devices; personnel tracking devices, namely, electronic devices for personnel using wireless communication networks and radio frequency; article tracking devices, namely, electronic devices for tracking articles using wireless communication networks and radio frequency; pet tracking devices, namely, electronic devices for tracking pets using wireless communication networks and radio frequency; vehicle tracking devices using wireless communication networks and radio frequency; electronic devices for locating and tracking articles, people and pets, using wireless communication networks and radio frequency
A method for location finding includes detecting a respective phase difference between the received radio signals that are associated with each of the multiple antennas of each of the fixed transceivers. One or more respective angles are computed between each of the fixed transceivers and the mobile transceiver based on the respective phase differences. Location coordinates of the mobile transceiver are found based on the angles and the transmit locations of the transmitters.
G01S 5/10 - Position du récepteur obtenue par coordination de plusieurs lignes de position définies par des mesures de différence de parcours
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
A method for signal processing includes receiving at a given location at least first and second signals transmitted respectively from at least first and second antennas (34) of a wireless transmitter (24). The at least first and second signals encode identical data using a multi-carrier encoding scheme with a predefined cyclic delay between the transmitted signals. The received first and second signals are processed, using the cyclic delay, in order to derive a measure of a phase delay between the first and second signals. Based on the measure of the phase delay, an angle of departure (θ) of the first and second signals from the wireless transmitter to the given location is estimated.
A method for signal processing includes receiving at a given location at least first and second signals transmitted respectively from at least first and second antennas of a wireless transmitter. The at least first and second signals encode identical data using a multi-carrier encoding scheme with a predefined cyclic delay between the transmitted signals. The received first and second signals are processed, using the cyclic delay, in order to derive a measure of a phase delay between the first and second signals. Based on the measure of the phase delay, an angle of departure of the first and second signals from the wireless access point to the given location is estimated.
H04W 4/02 - Services utilisant des informations de localisation
H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
A method for signal processing includes receiving at a given location at least first and second signals transmitted respectively from at least first and second antennas of a wireless transmitter. The at least first and second signals encode identical data using a multi-carrier encoding scheme with a predefined cyclic delay between the transmitted signals. The received first and second signals are processed, using the cyclic delay, in order to derive a measure of a phase delay between the first and second signals. Based on the measure of the phase delay, an angle of departure of the first and second signals from the wireless access point to the given location is estimated.
H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
