公开(公告)号：US20180167899A1

公开(公告)日：2018-06-14

申请号：US15892901

申请日：2018-02-09

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana

IPC: H04W56/00 ,  G01S5/00 ,  G01S5/02 ,  G01S13/76

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.

公开(公告)号：US09971014B2

公开(公告)日：2018-05-15

申请号：US14267717

申请日：2014-05-01

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Sandip Homchaudhuri ,  Carlos Horacio Aldana

IPC: H04W64/00 ,  G01S5/02 ,  H04W56/00

CPC classification number: G01S5/0236 ,  G01S5/0226 ,  H04W56/002 ,  H04W64/00

Abstract: Methods, systems, and devices are described for a wireless positioning framework in which an access point (AP) broadcasts a message within a beacon interval that identifies a transmission schedule for a set of stations. The message may include an information element identifying the stations in the set. The set may be determined based on station clock drifts and/or a ranging accuracy sought by the AP. The AP may also provide a station identifier, and frame spacing and delay parameters, which may be used to determine a distinct backoff for each station. Using distinct backoffs allow the stations to avoid collisions when sending the transmissions. The AP may receive the transmissions according to the identified schedule and may determine a range (e.g., round-trip time) for each station in the set based at least on a time at which the respective transmission is received.

公开(公告)号：US20180098303A1

公开(公告)日：2018-04-05

申请号：US15835192

申请日：2017-12-07

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Ning Zhang ,  Carlos Horacio Aldana ,  Youhan Kim ,  Praveen Dua ,  Meghna Agrawal

IPC: H04W64/00 ,  H04W24/00 ,  H04W52/02 ,  H04L5/00 ,  H04L12/841 ,  H04W84/12

CPC classification number: H04W64/00 ,  G01S1/00 ,  G01S13/74 ,  H04L5/0055 ,  H04L47/283 ,  H04W24/00 ,  H04W52/0209 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: A ranging operation between an initiator device and a responder device may be performed by receiving, from the initiator device, a data frame including a request for the responder device to report its actual Short Interframe Space (SIFS) duration to the initiator device; creating a response frame; determining the actual SIFS duration based on the received data frame and the response frame; embedding SIFS information indicative of the actual SIFS duration of the responder device into the response frame; and sending the response frame to the initiator device.

公开(公告)号：US09924387B2

公开(公告)日：2018-03-20

申请号：US15013304

申请日：2016-02-02

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Xiaoxin Zhang

IPC: H04W24/06 ,  H04L1/16 ,  H04W72/04 ,  H04L12/26 ,  G01S5/12 ,  G01S13/74

CPC classification number: H04W24/06 ,  G01S5/12 ,  G01S13/74 ,  H04L1/16 ,  H04L43/0864 ,  H04W72/0406 ,  H04W72/0446

Abstract: Apparatuses and methods are disclosed that may perform ranging operations between an initiator device and a responder device. The initiator device may request the responder device to perform a ranging operation. The responder device may transmit a first fine timing measurement (FTM) frame to the initiator device, may receive an acknowledgement (ACK) frame from the responder device, and may transmit a second FTM frame to the initiator device. The second FTM frame may include a time value and angle information. The time value may indicate a difference between a time of departure (TOD) of the first FTM frame and a time of arrival (TOA) of the ACK frame. The angle information may indicate a direction of the initiator device relative to the responder device.

公开(公告)号：US09781698B2

公开(公告)日：2017-10-03

申请号：US14836190

申请日：2015-08-26

Applicant: QUALCOMM Incorporated

Inventor： Sai Pradeep Venkatraman ,  Subash Marri Sridhar ,  Saumitra Mohan Das ,  Carlos Horacio Aldana

IPC: H04W24/00 ,  H04W64/00 ,  G01S5/00 ,  G01R29/10 ,  H04W24/08 ,  G01S5/02 ,  H04W88/08

CPC classification number: H04W64/003 ,  G01R29/10 ,  G01S5/0252 ,  H04W24/08 ,  H04W64/00 ,  H04W88/08

Abstract: Disclosed are methods, devices, systems, apparatus, servers, computer-/processor-readable media, and other implementations, including a method, performed at a processor-based device, that includes obtaining antenna information for one or more wireless nodes, and generating based, at least in part, on the antenna information for the one or more wireless nodes, a heatmap representative of values measurable at a plurality of locations from signals transmitted by the one or more wireless nodes.

公开(公告)号：US20170280414A1

公开(公告)日：2017-09-28

申请号：US15370977

申请日：2016-12-06

Applicant: QUALCOMM Incorporated

Inventor： Ravi Gidvani ,  Sudheer Kumar Suryadevara ,  Carlos Horacio Aldana

IPC: H04W64/00 ,  G01S11/02 ,  H04L5/00

CPC classification number: H04W64/003 ,  G01S11/02 ,  H04L5/0055 ,  H04W48/10 ,  H04W52/0209 ,  H04W64/00 ,  H04W88/08

Abstract: Disclosed are methods, systems and devices for obtaining a measurement of a range between two devices. For example, wireless stations may obtain a measurement of range between the wireless stations based, at least in part, on an exchange messages such as fine timing measurement (FTM) messages. In a particular implementation, FTM messages may be received at a transceiver device in a burst of FTM messages from a responding wireless station. An acknowledgement messages may be transmitted to the responding wireless station immediately in response to receipt of the FTM message.

公开(公告)号：US20170261591A1

公开(公告)日：2017-09-14

申请号：US15457750

申请日：2017-03-13

Applicant: QUALCOMM Incorporated

Inventor： Ning Zhang ,  Xiaoxin Zhang ,  Youhan Kim ,  Carlos Horacio Aldana ,  Patrick Kelliher ,  Yen-Feng Lee

IPC: G01S5/02 ,  G01S5/06 ,  G01S11/04

CPC classification number: G01S5/12 ,  G01S5/14 ,  G01S11/02 ,  G01S13/76 ,  H04W64/00

Abstract: This disclosure provides systems, methods and apparatuses for performing ranging operations between wireless devices. In some implementations, wireless devices can exchange ranging packets that include packet extensions containing a plurality of long training fields (LTFs). The wireless devices can use the LTFs in the ranging packets to obtain a plurality of round-trip time (RTT) values based on a single exchange of ranging packets. The wireless devices also can use the LTFs to estimate angle of arrival (AoA) and angle of departure (AoD) information of the exchanged ranging packets.

公开(公告)号：US20170230856A1

公开(公告)日：2017-08-10

申请号：US15370599

申请日：2016-12-06

Applicant: QUALCOMM Incorporated

Inventor： Santosh Vamaraju ,  Carlos Horacio Aldana

IPC: H04W24/10 ,  H04W76/02

CPC classification number: H04W24/10 ,  H04W64/00 ,  H04W76/10 ,  H04W84/12 ,  H04W88/08

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 message transmitted from a first wireless transceiver device to a second wireless transceiver device may comprise one or more parameters indicative of a range between the first wireless transceiver device and the second wireless transceiver device, or a range between the first wireless transceiver device and a third wireless transceiver device other than the second wireless transceiver device.

公开(公告)号：US09668101B2

公开(公告)日：2017-05-30

申请号：US15065696

申请日：2016-03-09

Applicant: QUALCOMM Incorporated

Inventor： Subash Marri Sridhar ,  Carlos Horacio Aldana ,  Santosh Kumar Vamaraju

IPC: H04W24/00 ,  H04W4/02 ,  H04W56/00 ,  H04L5/00

CPC classification number: H04W4/023 ,  H04L5/0055 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0065

Abstract: Disclosed herein are techniques for timing synchronization between a first wireless device and a second wireless device. The techniques include sending a first message by the first wireless device to the second wireless device, obtaining a first timestamp at the first wireless device by the first wireless device, and receiving, by the first wireless device, a fine timing measurement frame from the second wireless device in response to the first message. The fine timing measurement frame includes at least a part of a second timestamp from the second wireless device. The techniques further include determining by the first wireless device that the first wireless device is not synchronized to the second wireless device based at least partially on the part of the second timestamp and the first timestamp.

公开(公告)号：US20170099648A1

公开(公告)日：2017-04-06

申请号：US15251987

申请日：2016-08-30

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Carlos Horacio Aldana ,  Hemanth Sampath

IPC: H04W64/00 ,  H04L29/12

CPC classification number: H04W64/00 ,  H04L61/6004 ,  H04L61/6022 ,  H04W84/12

Abstract: Methods, apparatuses, and systems are described that implement techniques and protocols to enable a first device to send positioning information to a second device. For example, an apparatus device may include a processor configured to generate, at a first device, a data frame including an address field and a data field. The address field includes a particular value indicating that the data field includes positioning information related to a location of the first device. The apparatus also includes a transmitter configured to transmit the data frame to a second device.