公开(公告)号：US10135640B2

公开(公告)日：2018-11-20

申请号：US15393763

申请日：2016-12-29

Applicant: QUALCOMM Incorporated

Inventor： Amichai Sanderovich ,  Ran Hay ,  Reuven Alpert ,  Alecsander Eitan

IPC: H04L25/03 ,  H04B7/08 ,  H04B7/06 ,  H04L5/00 ,  H04W16/28

Abstract: A technique is disclosed for reducing interference in a communication system including a plurality of wireless devices. A first device transmits an RTS-TRN frame including a Request to Send (RTS) portion and a first beam training sequence to determine whether a communication medium is available to communicate with a second device. If the communication medium is available, the second device transmits a CTS-TRN frame including a Clear to Send (CTS) portion and a second beam training sequence. One or more neighboring devices that receive the RTS-TRN frame and/or the CTS-TRN frame configure their respective antennas to generate one or more nulls aimed at the first and second devices when transmitting signals, as long as the first and second devices are communicating based on a duration field in the RTS-TRN frame and/or CTS-TRN frame. This reduces interference at the first and/or second devices.

公开(公告)号：US09936352B2

公开(公告)日：2018-04-03

申请号：US14612270

申请日：2015-02-02

Applicant: QUALCOMM Incorporated

Inventor： Amichai Sanderovich ,  Reuven Alpert

IPC: H04W24/00 ,  H04W4/02 ,  H04W64/00 ,  G01S11/04 ,  G01S11/06

CPC classification number: H04W4/023 ,  G01S11/04 ,  G01S11/06 ,  H04W64/00

Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for estimating a distance between a first and second apparatus. For example, the first apparatus may obtain a plurality of training signals received in a plurality of directions from a second apparatus and estimate, based on the plurality of training signals, a distance between the first apparatus and the second apparatus. In certain aspects, the distance may be estimated based on a ratio of receive powers of first and second training signals of the plurality of training signals.

公开(公告)号：US09774996B1

公开(公告)日：2017-09-26

申请号：US15172130

申请日：2016-06-02

Applicant: QUALCOMM Incorporated

Inventor： Javier Frydman ,  Amichai Sanderovich ,  Reuven Alpert

IPC: H04W4/02 ,  G01S5/10 ,  G01S5/14

CPC classification number: H04W4/023 ,  G01S5/10 ,  G01S5/14 ,  G01S13/46 ,  G01S13/765 ,  G01S13/874 ,  G01S13/878 ,  G01S2013/466

Abstract: One aspect of this disclosure provides an apparatus for wireless communication. The apparatus comprises a plurality of antennas and a processing system. The processing system is configured to transmit a first signal to and receive a second signal from an wireless node via each of the antennas. The processing system is further configured to determine a plurality of distances between each of the plurality of antennas and the wireless node based on the signals. The processing system is also configured to identify a position of each of the antennas in relation to the wireless node based on a known distance between two antennas of the plurality of antennas in a pair and the determined distances. The processing system is further also configured to command a movement of the apparatus based, at least in part, on the identified positions.