Patents Assigned to Wavion Ltd.
-
Patent number: 9143176Abstract: Discriminative methods for multipath fingerprinting, enabling single-site localization in rich multipath environments, are provided herein. In contrast to the existing descriptive method that uses only the data of each location for its fingerprint extraction, these methods use also the data of the other locations in the database, and leverage it to make the fingerprint as different as possible from the other fingerprints in the database. The performance of these methods, validated with both simulated and real data, is superior to the existing method, demonstrating localization accuracy of about 1 m in typical indoor environments.Type: GrantFiled: April 8, 2014Date of Patent: September 22, 2015Assignee: WAVION, LTD.Inventors: Mati Wax, Ariel Yaffe
-
Patent number: 9084217Abstract: Single-site localization of wireless emitters in a rich multipath environment is presented. The localization method is based on exploiting the spatio-temporal characteristics of the multipath signals, referred to as the multipath fingerprint, as captured by the base station antenna array. The method is applicable to all modern communication techniques such as WiFi and LTE and to any rich multipath environment in indoors and outdoors.Type: GrantFiled: December 18, 2012Date of Patent: July 14, 2015Assignee: WAVION LTD.Inventors: Mati Wax, Evgeny Kupershtein
-
Patent number: 8295258Abstract: A wireless access point coherently receives signals transmitted from client devices and from interfering devices, measures noise and interference capture samples from the received signals, and computes a characterization of noise plus interference. Receive gains and threshold levels are adjusted based on the computed noise plus interference characterization. A set of weights for an interference suppression spatial filter are calculated from the measured noise and interference capture samples and used to produce a filtered signal by spatially filtering the received signals such that interference is spatially nulled in the filtered signal. The method may also include setting PHY parameters at the wireless access point based on the computed noise plus interference characterization. In some embodiments, a protection transmission is transmitted from the wireless access point, requesting connected client devices to suspend transmissions during a specified time period.Type: GrantFiled: January 21, 2010Date of Patent: October 23, 2012Assignee: Wavion, LtdInventors: Mati Wax, Reuven Tweg, Avi Steiner, Hanan Leizerovich, Evgeny Levitan, Aviv Aviram
-
Patent number: 8014366Abstract: A method for communication over a wireless local area network (WLAN) includes receiving uplink signals from a plurality of stations in the WLAN. Responsively to the uplink signals, a set of the stations is selected for inclusion in a spatial multiplexing group. Downlink signals are transmitted simultaneously to the stations in the set using spatial division multiplexing (SDM).Type: GrantFiled: August 13, 2004Date of Patent: September 6, 2011Assignee: Wavion Ltd.Inventors: Mati Wax, Ruby Tweg, Aviv Aviram, Evgeni Levitan, Amit Freiman, Einat Ofir-Arad, Hovav Elzas, Alex Podyetsky, Avi Vaknin, Yael Shavit
-
Patent number: 7289481Abstract: A method for communication includes receiving signals transmitted over the air by first and second mobile stations on a common frequency channel in a wireless packet network, the signals carrying first and second data packets transmitted by the first and second mobile stations, respectively, the first and second data packets comprising respective, first and second headers. The received signals are processed so as to identify the first header. Responsively to the identified first header, signal values corresponding to at least a portion of the first data packet are reconstructed, and the reconstructed signal values are subtracted from the received signals so as to produce a modified signal. The modified signal is processed in order to identify the second header. The first and second data packets are demodulated using the identified first and second headers.Type: GrantFiled: March 16, 2005Date of Patent: October 30, 2007Assignee: Wavion Ltd.Inventors: Mati Wax, Ruby Tweg, Aviv Aviram, Evgeni Levitan, Amit Freiman, Einat Ophir-Arad, Alex Podgaetsky, Hovav Elzas
-
Publication number: 20050213556Abstract: A method for communication includes receiving signals transmitted over the air by first and second mobile stations on a common frequency channel in a wireless packet network, the signals carrying first and second data packets transmitted by the first and second mobile stations, respectively, the first and second data packets comprising respective, first and second headers. The received signals are processed so as to identify the first header. Responsively to the identified first header, signal values corresponding to at least a portion of the first data packet are reconstructed, and the reconstructed signal values are subtracted from the received signals so as to produce a modified signal. The modified signal is processed in order to identify the second header. The first and second data packets are demodulated using the identified first and second headers.Type: ApplicationFiled: March 16, 2005Publication date: September 29, 2005Applicant: Wavion Ltd.Inventors: Mati Wax, Ruby Tweg, Aviv Aviram, Evgeni Levitan, Amit Freiman, Einat Ophir-Arad, Alex Podgaetsky, Hovav Elzas
-
Publication number: 20050047384Abstract: A method for communication over a wireless local area network (WLAN) includes receiving uplink signals from a plurality of stations in the WLAN. Responsively to the uplink signals, a set of the stations is selected for inclusion in a spatial multiplexing group. Downlink signals are transmitted simultaneously to the stations in the set using spatial division multiplexing (SDM).Type: ApplicationFiled: August 13, 2004Publication date: March 3, 2005Applicant: Wavion Ltd.Inventors: Mati Wax, Ruby Tweg, Aviv Aviram, Evgeni Levitan, Amit Freiman, Einat Ofir-Arad, Hovav Elzas, Alex Podyetsky, Avi Vaknin, Yael Shavit