公开(公告)号：US11743837B2

公开(公告)日：2023-08-29

申请号：US17118506

申请日：2020-12-10

Applicant: QUALCOMM Incorporated

Inventor： Arjun Bharadwaj ,  Rahul Tandra ,  Bin Tian ,  Youhan Kim ,  Simone Merlin ,  George Cherian

IPC: H04W52/24 ,  H04W52/14 ,  H04L27/26 ,  H04B7/0452 ,  H04L1/00 ,  H04W52/22 ,  H04L5/00 ,  H04W52/36 ,  H04W52/26

CPC classification number: H04W52/242 ,  H04B7/0452 ,  H04L1/0009 ,  H04L5/0053 ,  H04L27/2601 ,  H04W52/143 ,  H04W52/146 ,  H04W52/228 ,  H04W52/262 ,  H04W52/265 ,  H04W52/362 ,  H04W52/367

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a target receiver power level for uplink transmissions received at the apparatus, to determine uplink power control information based on the determined target receiver power level for UL MU-MIMO transmission or UL OFDMA transmission, and to transmit a frame that includes the determined uplink power control information to a station scheduled by the apparatus for uplink transmission.

公开(公告)号：US10149198B2

公开(公告)日：2018-12-04

申请号：US15138972

申请日：2016-04-26

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Rahul Tandra ,  Arjun Bharadwaj ,  Bin Tian

IPC: H04W4/00 ,  H04W28/06 ,  H04W72/04 ,  H04L5/00 ,  H04W84/12

Abstract: Techniques are described for wireless communication. A method for wireless communication at an access point may include identifying a number of stations to receive data from the access point, and generating a downlink frame to transmit the data to the identified number of stations. The downlink frame may include a first signaling field (e.g., a wireless local area network (WLAN) signaling field) directed to the identified number of stations. The first signaling field may include a first segment and a second segment. The first segment may include information common to each of the identified number of stations. The second segment may include at least one information block. Each information block may be separately encoded for each of the identified number of stations. The method may also include transmitting the downlink frame to the identified number of stations.

公开(公告)号：US20180063823A1

公开(公告)日：2018-03-01

申请号：US15806041

申请日：2017-11-07

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Bin Tian ,  Rahul Tandra ,  Gwendolyn Denise Barriac ,  Yan Zhou ,  Sameer Vermani ,  Simone Merlin

IPC: H04W72/04 ,  H04W72/08 ,  H04W16/14 ,  H04W74/08 ,  H04W16/10 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W72/042 ,  H04W16/10 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/082 ,  H04W74/0816 ,  H04W74/085 ,  H04W84/12 ,  H04W88/08

Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.

公开(公告)号：US09900199B2

公开(公告)日：2018-02-20

申请号：US14702558

申请日：2015-05-01

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Rahul Tandra ,  Dung Ngoc Doan

IPC: H04L27/26 ,  H04L1/06 ,  H04L5/00 ,  H04L25/02 ,  H04B17/309

CPC classification number: H04L27/2613 ,  H04B17/309 ,  H04L1/0625 ,  H04L1/0681 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2607 ,  H04L27/2611

Abstract: Methods, devices, and computer program products for improving training field design in packets with increased symbol durations are disclosed. In one aspect, a method of transmitting a packet on a wireless communication network is disclosed. The method includes transmitting a preamble of the packet over one or more space-time-streams, the preamble including one or more training fields configured to be used for channel estimation, the one or more training fields each comprising one or more symbols of a first symbol duration. The method further includes transmitting a payload of the packet over the one or more space-time-streams, the payload comprising one or more symbols of a second symbol duration, the second symbol duration greater than the first symbol duration.

公开(公告)号：US09860851B2

公开(公告)日：2018-01-02

申请号：US13782866

申请日：2013-03-01

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Gwendolyn Denise Barriac ,  Simone Merlin ,  Sameer Vermani ,  Rahul Tandra ,  Bin Tian ,  Hemanth Sampath ,  Vincent Knowles Jones, IV

IPC: H04W4/00 ,  H04W52/24 ,  H04W16/10

CPC classification number: H04W52/243 ,  H04W16/10 ,  H04W84/12

Abstract: An apparatus and method for managing interference in a transmission medium are disclosed. A apparatus and method may be used to detect a condition experienced by only one of first and second wireless nodes, and modify an operational parameter of one of the first and second wireless nodes, if the condition is detected, such that both the first and second wireless nodes experience the condition or neither the first and second wireless nodes experience the condition.

公开(公告)号：US09839024B2

公开(公告)日：2017-12-05

申请号：US15184889

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Bin Tian ,  Rahul Tandra ,  Gwendolyn Denise Barriac ,  Yan Zhou ,  Sameer Vermani ,  Simone Merlin

IPC: H04W72/04 ,  H04W16/14 ,  H04W74/08 ,  H04W16/10 ,  H04W72/08 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W72/042 ,  H04W16/10 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/082 ,  H04W74/0816 ,  H04W74/085 ,  H04W84/12 ,  H04W88/08

Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.

公开(公告)号：US09722651B2

公开(公告)日：2017-08-01

申请号：US14826742

申请日：2015-08-14

Applicant: QUALCOMM Incorporated

Inventor： Naveen Goela ,  Venkatesan Nallampatti Ekambaram ,  Rahul Tandra ,  Joseph Binamira Soriaga

IPC: H04K1/10 ,  H04B1/12 ,  H04L1/00 ,  H04B7/0413 ,  H03M13/11 ,  H03M13/13

CPC classification number: H04B1/123 ,  H03M13/1111 ,  H03M13/1191 ,  H03M13/13 ,  H03M13/353 ,  H04B7/0413 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0057

Abstract: Methods, systems, and devices are described for wireless communications at a wireless device. A wireless device may adaptively select a parity check matrix to increase the reliability of signal transmission by adapting to different channel statistics and channel types (e.g., erasure channels, channels with additive white Gaussian noise, and channels with discrete or continuous alphabets). For example, polarization codes (i.e., codes based on rows of a polarization matrix) may be used to construct parity check matrices “on-the-fly” given an estimation of dynamic channel conditions or diverse channel structures. The channel may be decomposed into polarized sub-channels corresponding to the polarization codes, and mutual information profiles may be determined for each of the polarized sub-channels. The parity check matrix corresponding to the polarization codes may be constructed based on the mutual information profile of all polarized sub-channels. The wireless device may encode or decode data based on the constructed parity check matrix.

公开(公告)号：US20170135050A1

公开(公告)日：2017-05-11

申请号：US15413016

申请日：2017-01-23

Applicant: QUALCOMM Incorporated

Inventor： Santosh ABRAHAM ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen Shellhammer ,  Rahul Tandra

IPC: H04W52/32 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W52/04 ,  H04B7/12 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0027 ,  H04L1/06 ,  H04W16/14 ,  H04W52/325 ,  H04W52/367 ,  H04W74/0816

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. One example method generally includes transmitting a sequence of request-to-send (RTS) messages at different transmit power levels to an apparatus and determining if a clear-to-send (CTS) message was received in response to at least one of the RTS messages corresponding to a particular one of the transmit power levels. Another example method generally includes receiving, at a first apparatus from a second apparatus, a packet that cannot be decoded by the first apparatus; determining at least one of a time or a duration corresponding to the packet; transmitting a query with an indication of the at least one of the time or the duration; and receiving a message from the second apparatus in response to the query, the message identifying the second apparatus as a source of the packet.

公开(公告)号：US09648620B2

公开(公告)日：2017-05-09

申请号：US14467779

申请日：2014-08-25

Applicant: QUALCOMM Incorporated

Inventor： Rahul Tandra ,  Sameer Vermani ,  Bin Tian ,  Albert Van Zelst

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/0453 ,  H04J11/0023 ,  H04J2011/0009 ,  H04L5/0037 ,  H04L27/2613

Abstract: A method includes generating a data packet at an access point. The data packet is to be communicated using a waveform that includes a first set of tones that is allocated to a first destination device and a second set of tones that is allocated to a second destination device. The first set of tones is non-overlapping with respect to the second set of tones, and each tone of the first set of tones and each tone of the second set of tones is an orthogonal frequency-division multiple access (OFDMA) tone. The method also includes transmitting the data packet to the first destination device via an institute of electrical and electronics engineers (IEEE) 802.11 wireless network and transmitting the data packet to the second destination device via the IEEE 802.11 wireless network.

公开(公告)号：US09615397B2

公开(公告)日：2017-04-04

申请号：US13677382

申请日：2012-11-15

Applicant: QUALCOMM Incorporated

Inventor： Santosh Paul Abraham ,  Sameer Vermani ,  Maarten Menzo Wentink ,  Rahul Tandra ,  Hemanth Sampath

IPC: H04W84/12 ,  H04W72/12 ,  H04B7/0452 ,  H04W4/08

CPC classification number: H04W72/005 ,  H04B7/0452 ,  H04W4/08 ,  H04W8/186 ,  H04W72/121 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/444

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for efficiently managing groups of stations (STAs) receiving simultaneous transmissions in a multiuser multiple-input multiple-output (MU-MIMO) scheme. One example method generally includes; for a first apparatus in a number of groups of apparatuses, allocating a first spatial stream position for each of at least one first group in the number of the groups; and transmitting a first unicast message to the first apparatus, wherein the first unicast message comprises an indication of the allocated spatial stream position for each of the at least one first group and, for each group in the number of the groups, an indication of a membership status, in the group, of the first apparatus.