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公开(公告)号：US09900859B2
公开(公告)日：2018-02-20
申请号：US15699751
申请日：2017-09-08
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana
CPC classification number: H04W64/00 , G01S7/40 , G01S13/765 , G01S13/878 , H04L43/0864
Abstract: Techniques for determining a Round Trip Time (RTT) calibration value are disclosed. An example of a method according to the disclosure includes receiving a fine timing measurement (FTM) exchange between an initiating station and a responding station, calculating a plurality of differential round trip time (RTT) measurements based on the FTM exchange, calculating a responding station calibration value based on the plurality of differential RTT measurements, and transmitting the responding station calibration value to the responding station.
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42.发明授权公开(公告)号：US09866993B2
公开(公告)日：2018-01-09
申请号：US14836308
申请日：2015-08-26
Applicant: QUALCOMM Incorporated
Inventor： Saumitra Mohan Das , Sai Pradeep Venkatraman , Subash Marri Sridhar , Carlos Horacio Aldana
IPC: H04M1/00 , H04W4/02 , H04W64/00 , G01S5/02 , G01S5/14 , G01S13/74 , H04B7/185 , H04B7/14 , H04B15/00 , H04B1/38 , H01Q1/00 , H01Q9/00 , H01Q21/00 , H01Q1/12
CPC classification number: H04W4/02 , G01S5/0236 , G01S5/14 , G01S13/74 , H04W64/00
Abstract: Disclosed are methods, devices, systems, apparatus, servers, computer-/processor-readable media, and other implementations, including a method, performed at a processor-based wireless mobile device, that includes receiving, by the mobile device, signals that include at least one message comprising antenna information for a first wireless node transmitting the signals, and transmitting, by the mobile device, an information message including the antenna information for the first wireless node to a remote device configured to receive and store antenna data for multiple wireless nodes obtained by one or more wireless devices while visiting respective areas covered by the multiple wireless nodes.
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公开(公告)号：US09807637B2
公开(公告)日：2017-10-31
申请号：US14862985
申请日：2015-09-23
Applicant: QUALCOMM Incorporated
Inventor： Ashok Bhatia , Vishal Agarwal , Dominic Gerard Farmer , Carlos Horacio Aldana
CPC classification number: H04W24/10 , H04L43/0864 , H04W64/00 , H04W72/005
Abstract: In one aspect, a method performed by an access point in a wireless local area network (WLAN), includes receiving a first ranging request message from a first device and monitoring for a second ranging request message from a second device on a channel of the WLAN. The first ranging request message includes a device identifier of the first device and the second ranging request message includes a device identifier of the second device. In response to receiving the second ranging request message, the access point combines the device identifier of the first device, first timing information associated with the first ranging request message, the device identifier of the second device, and second timing information associated with the second ranging request message into a single ranging response message. The access point then broadcasts the single ranging response message on the channel of the WLAN.
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44.发明申请公开(公告)号：US20170251449A1
公开(公告)日：2017-08-31
申请号：US15257824
申请日：2016-09-06
Applicant: QUALCOMM Incorporated
Inventor： Rahul Malik , Ravi Hiranand Gidvani , Carlos Horacio Aldana
CPC classification number: H04W64/003 , H04L27/2602 , H04W4/06 , H04W56/0065 , H04W84/12
Abstract: Disclosed embodiments pertain to a first STA may broadcast a first Null Data Packet Announcement (NDPA) frame with an indication of one or more second STAs being polled. Subsequent to the first NDPA frame, a Null Data Packet (NDP) frame may be broadcast from a plurality of antennas on the first STA and one or more corresponding first Fine Timing Measurement (FTM) frames may be received in response. Each corresponding first FTM frame may be received from a distinct corresponding second STA and may comprise corresponding ranging measurements between the first STA and the corresponding second STA as determined by the corresponding second STA based on the NDP frame. In some embodiments, the one or more corresponding first FTM frames may be: received in response to a previously broadcast trigger frame, and encoded using Orthogonal Frequency Division Multiple Access. The trigger frame may be broadcast subsequent to the NDP frame.
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公开(公告)号：US20170248682A1
公开(公告)日：2017-08-31
申请号：US15369072
申请日：2016-12-05
Applicant: QUALCOMM Incorporated
Inventor： Santosh Vamaraju , Carlos Horacio Aldana
CPC classification number: G01S5/14 , G01S5/0027 , G01S5/06 , H04W4/02 , H04W28/06 , H04W52/0209 , H04W52/0216 , H04W52/0229 , H04W64/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/164 , Y02D70/26
Abstract: Disclosed are methods, systems and devices for obtaining a range between devices based, at least in part, on an exchange of wireless messages. For example, wireless devices may obtain measurements of range based, at least in part, on an exchange fine timing measurement (FTM) messages. In one implementation, a subsequent FTM message transmitted in response to an FTM request message may comprise at least one field indicating a time of transmission of a previous FTM message and a time of receipt of an acknowledgement message transmitted in response to the previous FTM message.
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Patent Agency Ranking
公开(公告)号：US09730179B2
公开(公告)日：2017-08-08
申请号：US14938738
申请日：2015-11-11
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana , Xiaoxin Zhang
CPC classification number: H04W64/00 , G01S5/0236 , G01S11/02 , H04L5/0055 , H04W4/02 , H04W24/10 , H04W84/12
Abstract: Apparatuses and methods for performing multi-channel passive ranging operations are disclosed. In one example, a passive listening device may receive, on a first wireless channel, a first exchange of signals between a first wireless device and a second wireless device, and then receive on a second wireless channel, a second exchange of signals between the first wireless device and the second wireless device, the first wireless channel different than the second wireless channel. The passive listening device may determine a differential distance between the passive listening device and the first and second wireless devices based, at least in part, on the first and second exchanges of signals on the first and second wireless channels, respectively.
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公开(公告)号：US20170171833A1
公开(公告)日：2017-06-15
申请号：US15373560
申请日：2016-12-09
Applicant: QUALCOMM Incorporated
Inventor： Santosh Vamaraju , Hoonki Lee , Carlos Horacio Aldana , Ravi Gidvani
Abstract: This disclosure provides systems, methods and apparatus for establishing and maintaining network connections based on ranging information. In one aspect, a wireless device is configured to identify one or more candidate access points (APs) within a vicinity of the wireless device, and exchange fine timing measurement (FTM) frames with candidate APs to determine respective distances between the wireless device and each of the candidate APs. In some aspects, the exchange of FTM frames may be performed when the wireless device is not associated with any AP. In some other aspects, the exchange of FTM frames may be performed when the wireless device is already associated with an existing AP, for example, to determine whether a roaming condition is satisfied. The wireless device then selects one of the candidate APs, based at least in part on the FTM frames, and associates with the selected candidate AP.
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公开(公告)号：US20170134978A1
公开(公告)日：2017-05-11
申请号：US15342992
申请日：2016-11-03
Applicant: QUALCOMM Incorporated
Inventor： Santosh Vamaraju , Carlos Horacio Aldana
IPC: H04W24/10
Abstract: Disclosed are methods, systems and devices for obtaining a range between devices based, at least in part, on an exchange of wireless messages. For example, wireless devices may obtain measurements of range based, at least in part, on an exchange fine timing measurement (FTM) messages during sessions. In one implementation, an initiating wireless station may transmit an initial FTM request message to a responding wireless station wherein the initial FTM request message comprising one or more fields indicating a capability of the initiating STA to generate Range Reports.
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公开(公告)号：US20170131380A1
公开(公告)日：2017-05-11
申请号：US15346406
申请日：2016-11-08
Applicant: QUALCOMM Incorporated
Inventor： Rahul Malik , Carlos Horacio Aldana
CPC classification number: G01S3/48 , G01S1/024 , G01S1/026 , G01S1/30 , G01S3/023 , H04B7/086 , H04W64/00
Abstract: Aspects of the present disclosure may compensate for a presence of phase ambiguity between transmit chains of a transmitting device when estimating angle of departure information of a wireless signal transmitted from the transmitting device. In some aspects, a receiving device may determine phase information of the wireless signal, and then determine whether there is a presence or absence of phase ambiguity between a number of transmit chains of the transmitting device. If there is presence of phase ambiguity in the transmitting device, then the receiving device may adjust the phase information of the received wireless signal. If there is an absence of phase ambiguity in the transmitting device, then the receiving device may not adjust the phase information. Thereafter, the receiving device may estimate the angle of departure of the wireless signal based on the selectively adjusted phase information.
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公开(公告)号：US20170094619A1
公开(公告)日：2017-03-30
申请号：US15188823
申请日：2016-06-21
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana
CPC classification number: H04W56/001 , G01S5/0009 , G01S5/021 , G01S13/765 , H04W56/003
Abstract: Disclosed are systems, devices and methods for transmission of messages between wireless transceiver devices including fields representing values such as, for example, a range between devices, time of transmission of a message or time of receipt of a previous message. In particular embodiments, message may also comprise fields to express a maximum error in values representing range, time of transmission of a message or time of receipt of a previous message.
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