公开(公告)号：US20240187157A1

公开(公告)日：2024-06-06

申请号：US18448033

申请日：2023-08-10

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Sameer VERMANI

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04W72/044 ,  H04W72/0453 ,  H04W80/02 ,  H04W80/08

CPC classification number: H04L5/0044 ,  H04L1/0013 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2605 ,  H04W72/0453 ,  H04W72/0466 ,  H04W80/02 ,  H04W80/08 ,  H04L27/2603

Abstract: This disclosure provides methods, devices and systems for data parsing for resource unit (RU) aggregation. A wireless communication device (such as an access point (AP) or a station (STA)) may allocate a set of RUs for a receiving device in a basic service set (BSS). The set of RUs may be associated with multiple bandwidth segments of a bandwidth allocation and may be non-contiguous or contiguous. The wireless communication device may determine a data parsing and encoding scheme for a set of information bits. The data parsing may be implemented at a medium access control (MAC) layer or physical (PHY) layer and the encoding may correspond to a joint encoding or a separate encoding for each RU of the allocation. The wireless communication device may then distribute the coded bits to the set of RUs for transmission.

公开(公告)号：US20240146355A1

公开(公告)日：2024-05-02

申请号：US18362127

申请日：2023-07-31

Applicant: QUALCOMM Incorporated

Inventor： Pooria PAKROOH ,  Kanke WU ,  Stephen Jay SHELLHAMMER ,  Bin TIAN

IPC: H04B1/7163 ,  H03M13/25

CPC classification number: H04B1/71635 ,  H03M13/255

Abstract: In some implementations, a transmitting UWB device may determine a number of information bits of a payload to communicate via UWB. The transmitting UWB device may select, based on the number of information bits, a codeword length from a selection of available codeword lengths with which to encode the payload using a low-density parity-check (LDPC) encoding scheme, wherein the selection of available codeword lengths include a first codeword length, a second codeword length, and a third codeword length, wherein the third codeword length is longer than the second codeword length, which is longer than the first codeword length. The transmitting UWB device may transmit the payload using one or more codewords having the selected codeword length.

公开(公告)号：US20240089865A1

公开(公告)日：2024-03-14

申请号：US18454881

申请日：2023-08-24

Applicant: QUALCOMM Incorporated

Inventor： Arjun BHARADWAJ ,  Rahul TANDRA ,  Bin TIAN ,  Youhan KIM ,  Simone MERLIN ,  George CHERIAN

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

CPC classification number: H04W52/242 ,  H04B7/0452 ,  H04L1/0009 ,  H04L5/0053 ,  H04L27/2601 ,  H04W52/143 ,  H04W52/146 ,  H04W52/228 ,  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：US20230412349A1

公开(公告)日：2023-12-21

申请号：US18302678

申请日：2023-04-18

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN

IPC: H04L5/00 ,  H04W72/0446 ,  H04W80/02

CPC classification number: H04L5/0094 ,  H04L5/0039 ,  H04W72/0446 ,  H04W80/02

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 trigger frame and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support distributed transmission. In some implementations, an access point (AP) may transmit a trigger frame soliciting a trigger-based (TB) PPDU from a wireless station (STA), where the trigger frame carries RU allocation information indicating a number (N) of tones allocated for the STA and carries tone distribution information indicating whether the N tones are allocated for a contiguous transmission or a distributed transmission. In some other implementations, an AP or a STA may transmit a PPDU carrying distributed signaling information indicating whether the PPDU is transmitted as a contiguous transmission or a distributed transmission.

公开(公告)号：US20230291631A1

公开(公告)日：2023-09-14

申请号：US18173612

申请日：2023-02-23

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Bin TIAN

IPC: H04L27/28 ,  H04L1/00 ,  H04L27/20

CPC classification number: H04L27/28 ,  H04L1/0003 ,  H04L27/2007

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 tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.

公开(公告)号：US20230121644A1

公开(公告)日：2023-04-20

申请号：US18069153

申请日：2022-12-20

Applicant: QUALCOMM Incorporated

Inventor： Alfred ASTERJADHI ,  George CHERIAN ,  Abhishek Pramod PATIL ,  Bin TIAN

IPC: H04W52/02 ,  H04W74/08

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus generally includes a processing system configured to generate a frame for triggering transmission of a plurality of data units from a plurality of wireless nodes, a first interface configured to output the frame for transmission to the plurality of wireless nodes, and a second interface configured to obtain the plurality of data units after outputting the frame for transmission, wherein the plurality of data units have different lengths.

公开(公告)号：US20220338057A1

公开(公告)日：2022-10-20

申请号：US17233242

申请日：2021-04-16

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay SHELLHAMMER ,  Bin TIAN

IPC: H04W28/06 ,  H04W80/02 ,  H04W28/02 ,  H04W72/04

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 and PPDU designs that support RU downsizing. For example, an access point (AP) may transmit a trigger frame soliciting a TB PPDU from a wireless station (STA). In some aspects, the trigger frame may carry RU allocation information indicating the allocated RU or MRU (associated with a wireless medium) and downsizing information indicating whether downsizing of the RU or MRU is permitted. If interference is detected in a portion of the wireless medium, and downsizing is permitted, the STA may transmit the TB PPDU on a downsized RU or MRU. The downsized RU or MRU includes a subset of the tones in the RU or MRU allocated by the trigger frame.

公开(公告)号：US20220224579A1

公开(公告)日：2022-07-14

申请号：US17145641

申请日：2021-01-11

Applicant: QUALCOMM Incorporated

Inventor： Alireza RAISSINIA ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Youhan KIM

IPC: H04L27/26 ,  H04L29/08 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for improving the security of secure long training field (LTF) transmissions. In some implementations, a transmitting device may perform windowing on a secure LTF, in the frequency domain, so that the resulting time-domain LTF signal is difficult, if not impossible, to predict by any device that observes a portion of the LTF signal. In some aspects, the transmitting device may negotiate the windowing of secure LTFs with a receiving device based on fine timing measurement (FTM) negotiation frames exchanged at the start of an FTM procedure. In some other aspects, the transmitting device may dynamically or adaptively perform windowing on secure LTFs. In such aspects, the transmitting device may indicate whether windowing is performed on a secure LTF based on information carried in a signal field of a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes the secure LTF.

公开(公告)号：US20220159673A1

公开(公告)日：2022-05-19

申请号：US17581735

申请日：2022-01-21

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Stephen Jay SHELLHAMMER ,  Alfred ASTERJADHI ,  Dung Ngoc DOAN ,  Bin TIAN ,  Youhan KIM

IPC: H04W72/12 ,  H04L1/16 ,  H04L1/18 ,  H04L1/20

Abstract: This disclosure provides systems, methods and apparatuses for data retransmissions in a wireless network. In some implementations, a wireless communication device may transmit a first data unit to a receiving device, may receive a first hybrid automatic repeat request (HARQ) feedback frame indicating that a portion of the first data unit was not successfully decoded by the receiving device, may retransmit the indicated portion of the first data unit to the receiving device in response to the first HARQ feedback frame, and may transmit a second data unit, different than the first data unit, to the receiving device concurrently with the retransmission of the indicated portion of the first data unit.

公开(公告)号：US20220150025A1

公开(公告)日：2022-05-12

申请号：US17096934

申请日：2020-11-12

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W28/06 ,  H04W72/04

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.