公开(公告)号：US20250035770A1

公开(公告)日：2025-01-30

申请号：US18713928

申请日：2023-02-24

Applicant: QUALCOMM Incorporated

Inventor： Pooria PAKROOH ,  Alexandros MANOLAKOS ,  Varun Amar REDDY ,  Krishna Kiran MUKKAVILLI ,  Bin TIAN

IPC: G01S13/76 ,  G01S13/87 ,  H04B1/7183

Abstract: In some implementations, a method may comprise determining capabilities of UWB initiator and responder devices related to at least one UWB session. The method may also comprise determining a gap duration based at least in part on the capabilities of the UWB initiator and responder devices for performing RF retuning during the at least one UWB session. The method may also comprise sending a configuration to the UWB initiator and/or responder devices, wherein the configuration is indicative of: a first period of time in the at least one UWB session during which a first portion of the UWB RF signals is transmitted using a first carrier frequency, a gap of at least the determined gap duration following the first period of time, and a second period of time, following the gap, during which a second portion of the UWB RF signals is transmitted using a second carrier frequency.

公开(公告)号：US20240430052A1

公开(公告)日：2024-12-26

申请号：US18740815

申请日：2024-06-12

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Lin YANG ,  Bin TIAN

IPC: H04L5/00 ,  H04L1/00 ,  H04W74/0816

Abstract: This disclosure provides methods, components, devices and systems for 480 and 640 megahertz (MHz) transmission in Wi-Fi. Some aspects more specifically relate to inclusion of a bandwidth field and a bandwidth extension field in a preamble of a physical layer protocol data unit (PPDU) that jointly indicate that the channel bandwidth of the PPDU is a contiguous 480 MHz channel bandwidth or a 640 MHz channel bandwidth. In some aspects, parameters of the PPDU may be defined based on the PPDU occupying a 480 MHz or 640 MHz bandwidth. For example, the parameters may include tone plans, allowed puncturing patterns, signaling of the puncturing plans, signaling of the resource unit allocation, a short training field, a long training field, pilot signal sequences, phase shifts, a segment parser, and/or a spectral mask.

公开(公告)号：US20240413866A1

公开(公告)日：2024-12-12

申请号：US18811529

申请日：2024-08-21

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Alfred ASTERJADHI ,  Youhan KIM

IPC: H04B7/06 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for increasing carrier frequencies for wireless communications in wireless local area networks (WLANs). Some implementations more specifically relate to BSS discovery and association techniques that support wireless communications on carrier frequencies above 7 GHz. In some aspects, an access point (AP) may communicate using beamforming on a wireless communication link operating at a carrier frequency above 7 GHZ (the “directional link”) while offloading the BSS discovery and association procedures needed to support such communications onto a wireless communication link operating at a carrier frequency below 7 GHZ (the “anchor link”). In some implementations, the AP may perform a beamforming training operation with a STA over the directional link upon associating with the STA over the anchor link. In such implementations, the AP may communicate with the STA over the directional link using a beam derived from the beamforming training operation.

公开(公告)号：US20240292419A1

公开(公告)日：2024-08-29

申请号：US18659575

申请日：2024-05-09

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Dung Ngoc DOAN

IPC: H04W72/20 ,  H04J11/00 ,  H04W72/044

CPC classification number: H04W72/20 ,  H04J11/00 ,  H04W72/046

Abstract: Methods and systems for amplitude shaping encoding and indicating boundaries in bitstreams are described. A transmitting device may insert, into a bitstream to indicate a boundary, a sequence of amplitude bits unassociated with patterns of bit values in a lookup table used for the encoding. A transmitting device may monitor a length of the amplitude bits in a bitstream during the encoding and stop the encoding on information bits at an end of a current data unit responsive to the length reaching a threshold. A transmitting device may monitor the length of the information bits and, for each data unit, determine whether a boundary is reached. Responsive to determining that a boundary is reached, the transmitting device may not include, before the boundary, amplitude bits generated based on the information bits in the data unit, and add padding bits after a last amplitude bit before the boundary.

公开(公告)号：US20240214996A1

公开(公告)日：2024-06-27

申请号：US18428834

申请日：2024-01-31

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay SHELLHAMMER ,  Sameer VERMANI ,  Jialing Li CHEN ,  Bin TIAN ,  Alfred ASTERJADHI ,  Yanjun SUN

IPC: H04W72/044 ,  H04L69/22 ,  H04W72/51 ,  H04W84/12

CPC classification number: H04W72/044 ,  H04L69/22 ,  H04W72/51 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for generating enhanced trigger frames. Some implementations more specifically relate to trigger frame designs that support gains in data throughput achievable in accordance with the IEEE 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced trigger frame may be used to solicit a non-legacy trigger-based (TB) physical layer protocol convergence protocol (PLCP) protocol data unit (PPDU) from one or more wireless stations (STAs). In some implementations, the enhanced trigger frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, an enhanced trigger frame may be configured in accordance with a legacy trigger frame format or a non-legacy trigger frame format. Thus, when configured in accordance with the legacy trigger frame format, the enhanced trigger frame can also be used to a legacy TB PPDU from one or more STAs.

公开(公告)号：US20240171355A1

公开(公告)日：2024-05-23

申请号：US18540324

申请日：2023-12-14

Applicant: QUALCOMM Incorporated

Inventor： Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Yanjun SUN ,  Alfred ASTERJADHI

IPC: H04L5/00 ,  H04W28/06 ,  H04W72/20

CPC classification number: H04L5/0053 ,  H04W28/06 ,  H04W72/20

Abstract: This disclosure provides methods, devices and systems for soliciting trigger-based (TB) physical layer protocol convergence protocol (PLCP) protocol data units (PPDUs). Some implementations more specifically relate to trigger frame designs that support non-legacy TB PPDU formats. In some aspects, a trigger frame may carry information to be included in a physical layer (PHY) preamble of a TB PPDU solicited by the trigger frame. For example, the information may indicate values of one or more subfields of a universal signal field (U-SIG) associated with the non-legacy TB PPDU format. In some aspects, the information may be carried in a special user information field of the trigger frame. For example, the special user information field may be identified by a special association identifier (AID) value. The special AID value may be different than any AID values assigned to wireless communication devices in a basic service set (BSS) associated with the TB PPDU.

公开(公告)号：US20240080690A1

公开(公告)日：2024-03-07

申请号：US18465804

申请日：2023-09-12

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Dung Ngoc DOAN ,  Sameer VERMANI ,  Jialing Li CHEN

IPC: H04W24/08 ,  H04L27/26

CPC classification number: H04W24/08 ,  H04L27/2627 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for link adaptation in wireless communications. Some implementations more specifically relate to transmitter-based modulation and coding scheme (MCS) selection. A transmitting device transmits a test packet, over a wireless channel, to a receiving device. The receiving device generates one or more signal-to-interference-plus-noise ratio (SINR) estimates for the wireless channel based on the received sounding packet. In some aspects, each SINR estimate may be associated with a particular modulation order. In some other aspects, each SINR estimate may be generated based on a transmitter configuration or a receiver type to be used for subsequent communications between the transmitting device and the receiving device. The receiving device transmits feedback, including the SINR estimates, to the transmitting device. The transmitting device then selects an MCS to be used for subsequent communications with the receiving device based on the SINR estimates and associated modulation orders.

公开(公告)号：US20240063876A1

公开(公告)日：2024-02-22

申请号：US17820006

申请日：2022-08-16

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Bin TIAN ,  Tevfik YUCEK ,  Lin YANG

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0691 ,  H04L5/0098

Abstract: This disclosure provides methods, devices and systems for improving wireless communications in power spectral density (PSD)-limited frequency bands. A wireless communication device, having a number (NTX) of transmit antennas, parses a physical layer (PHY) protocol data unit (PPDU) into a number (NSS) of spatial streams and modulates the NSS spatial streams on a number (M) of subcarriers. In some implementations, the wireless communication device may transmit the PPDU using a number (N) of the transmit antennas, where NSS≤N

公开(公告)号：US20240022286A1

公开(公告)日：2024-01-18

申请号：US18448010

申请日：2023-08-10

Applicant: QUALCOMM Incorporated

Inventor： Sameer VERMANI ,  Bin TIAN

IPC: H04B7/024 ,  H04L5/00 ,  H04B7/0452 ,  H04W72/044 ,  H04B7/0417 ,  H04W84/12 ,  H04W72/29

CPC classification number: H04B7/024 ,  H04L5/0035 ,  H04B7/0452 ,  H04L5/0044 ,  H04L5/0091 ,  H04W72/046 ,  H04B7/0417 ,  H04W84/12 ,  H04W72/29 ,  H04B7/0617

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes transmitting, from a first access point of a plurality of access points, an announcement frame for performing a beamforming procedure for a distributed transmission. The distributed transmission includes a transmission from the plurality of access points. The announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point. The method further includes transmitting a packet for measuring a channel. The method further includes receiving feedback information from the user terminal based on the packet for measuring the channel. The method further includes transmitting the distributed transmission using the beamforming procedure.

公开(公告)号：US20240007241A1

公开(公告)日：2024-01-04

申请号：US18323333

申请日：2023-05-24

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Qifan CHEN ,  Youhan KIM

IPC: H04L5/00 ,  H04W52/28

CPC classification number: H04L5/0041 ,  H04L5/0048 ,  H04L5/0069 ,  H04W52/286

Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to LTF designs that support distributed transmissions. In some aspects, a transmitting device may obtain a sequence of values representing an LTF of a PPDU and may map the sequence of values to a number (N) of noncontiguous subcarrier indices of a plurality of subcarrier indices spanning a wireless channel according to a distributed tone plan. In some implementations, the transmitting device may modulate the sequence of values on N tones, representing a logical RU, and map the N tones to the N noncontiguous subcarrier indices, respectively. In some other implementations, the sequence of values may be obtained based on relative locations of the N noncontiguous subcarrier indices in the wireless channel.