公开(公告)号：US20240306114A1

公开(公告)日：2024-09-12

申请号：US18181501

申请日：2023-03-09

Applicant: QUALCOMM Incorporated

Inventor： Yanjun SUN ,  Alireza RAISSINIA ,  George CHERIAN ,  Stephen Jay SHELLHAMMER ,  Gaurang NAIK ,  Abhishek Pramod PATIL ,  Alfred ASTERJADHI ,  Sai Yiu Duncan HO ,  Abdel Karim AJAMI

IPC: H04W64/00 ,  H04W4/02 ,  H04W24/10 ,  H04W28/02

CPC classification number: H04W64/00 ,  H04W4/023 ,  H04W24/10 ,  H04W28/0278 ,  H04W84/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a responding station may transmit a first ranging poll via a first bandwidth, the first ranging poll comprising an indication of a second ranging poll and first polling information transmitted with repetitions in a frequency domain based at least in part on serving first initiating stations (I-STAs) configured for communication using the first bandwidth and second I-STAs configured for communication using a second bandwidth that is smaller than the first bandwidth. The responding station may transmit, based at least in part on the indication of the second ranging poll, the second ranging poll over the second bandwidth comprising second polling information. Numerous other aspects are described.

公开(公告)号：US20240171436A1

公开(公告)日：2024-05-23

申请号：US18390180

申请日：2023-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2605 ,  H04B7/0452

Abstract: This disclosure provides methods, devices and systems for generating a secure long training field (LTF). In some implementations, the secure LTF may include a randomized bit sequence that is difficult, if not impossible, to replicate by any device other than the transmitting device and the intended receiving device. For example, the transmitting device may use a block cipher or stream cipher to generate a pseudorandom bit sequence and may select a subset of bits of the pseudorandom bit sequence to be mapped to a sequence of modulation symbols representing an LTF symbol of the secure LTF. More specifically, each of the modulation symbols is mapped to a respective one of a number of subcarriers spanning a bandwidth of the secure LTF. The transmitting device may further transmit a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes the secure LTF to the receiving device.

公开(公告)号：US20200287759A1

公开(公告)日：2020-09-10

申请号：US16806126

申请日：2020-03-02

Applicant: QUALCOMM Incorporated

Inventor： Didier Johannes Richard VAN NEE ,  Geert Arnout AWATER ,  Maarten Menzo WENTINK ,  Albert VAN ZELST ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Nitin RAVINDER ,  Muhammed Faruk GENCEL

IPC: H04L27/06 ,  H04L27/26 ,  H04W52/02

Abstract: This disclosure provides methods, devices and systems for identifying wake-up signals. Some implementations more specifically relate to PHY preamble designs for wake-up signals such as Wake-Up Radio (WUR) packets conforming to IEEE 802.11ba. In some implementations, the preamble designs can include a combination of modulation schemes, data rate indications and length indications enabling devices capable of receiving and decoding wake-up signals to identify the signals as wake-up signals (for example, WUR packets), while ensuring that devices not capable of receiving and decoding wake-up signals identify the wake-up signals as legacy packets, or otherwise not WUR packets.

公开(公告)号：US20190320493A1

公开(公告)日：2019-10-17

申请号：US16453532

申请日：2019-06-26

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok ANG ,  Tingfang JI ,  Joseph Patrick BURKE ,  Joseph Binamira SORIAGA ,  Stephen Jay SHELLHAMMER ,  Krishna Kiran MUKKAVILLI ,  John Edward SMEE

IPC: H04W76/28 ,  H04W52/02

Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for efficient support of connected discontinuous reception (C-DRX) by using a wireless device (e.g., a user equipment (UE)) with a second receiver. A wireless device with two receivers may place one receiver in a low power mode and take the receiver out of the low power mode in response to a signal received from a serving base station (BS) of the wireless device. A BS may direct a wireless device to enter a low power DRX (LP-DRX) mode or enhanced DRX mode having longer low power cycles than a non-enhanced DRX mode, and the wireless device may place a primary receiver in a low power mode in response to the directive from the BS. Other aspects, embodiments, and features are also claimed and disclosed.

公开(公告)号：US20240187192A1

公开(公告)日：2024-06-06

申请号：US18541388

申请日：2023-12-15

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay SHELLHAMMER ,  Bin TIAN ,  Alireza RAISSINIA ,  Simone MERLIN

IPC: H04L5/00 ,  H04B17/318

CPC classification number: H04L5/0053 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communications are described. A station (STA) may receive a null data packet (NDP) on a plurality of subcarriers, and the STA may generate a channel state information (CSI) matrix for each subcarrier of the plurality of subcarriers. After generating a CSI matrix for a subcarrier, such as at least one subcarrier, the STA may scale each value in the CSI matrix using a power-of-two value to minimize complexity. Specifically, instead of scaling each value in the CSI matrix to a value between zero and one using divisions (for example, which may be computationally expensive), the STA may use shifting to scale each value in the CSI matrix. The STA may then quantize the scaled values in the CSI matrix for reporting, and the STA may transmit the quantized, scaled values in the CSI matrix in a CSI report.

公开(公告)号：US20230422092A1

公开(公告)日：2023-12-28

申请号：US18316543

申请日：2023-05-12

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay SHELLHAMMER ,  Bin TIAN

IPC: H04W28/06 ,  H04W28/02 ,  H04W72/0453 ,  H04W80/02

CPC classification number: H04W28/06 ,  H04W80/02 ,  H04W72/0453 ,  H04W28/0268

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：US20230361809A1

公开(公告)日：2023-11-09

申请号：US17960056

申请日：2022-10-04

Applicant: QUALCOMM Incorporated

Inventor： Pooria PAKROOH ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Le Nguyen LUONG ,  Koorosh AKHAVAN

IPC: H04B1/7183

CPC classification number: H04B1/7183

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may transmit, to a second wireless communication device, a time and/or frequency synchronization message using a first radio frequency (RF) technology, wherein the time and/or frequency synchronization message is used to obtain synchronization information for a second RF technology. The first wireless communication device may transmit, to the second wireless communication device, a first set of ranging measurement signals associated with the second RF technology. The first wireless communication device may receive, from the second wireless communication device, a second set of ranging measurement signals associated with the second RF technology. Numerous other aspects are described.

公开(公告)号：US20230336388A1

公开(公告)日：2023-10-19

申请号：US18182288

申请日：2023-03-10

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay SHELLHAMMER ,  Bin TIAN ,  Sameer VERMANI ,  Jialing Li CHEN ,  Youhan KIM

IPC: H04L27/26

CPC classification number: H04L27/2603 ,  H04L27/2621 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, for generating or receiving a multi-generation physical layer protocol data unit (PPDU). The multi-generation PPDU may concurrently include a first generation-specific preamble based on a first generation of a wireless communication specification (such as that defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards) and a second generation-specific preamble based on a second generation of the wireless communication specification in a same transmission. The generation-specific preambles may be generated based on bandwidth portions of a wireless channel that each generation-specific preamble will occupy in the multi-generation PPDU. One or more of the generation-specific preambles may be modified based on an aggregate bandwidth of the multi-generation PPDU. This disclosure includes several options for modifying one or more generation-specific preambles or data fields to accommodate their use in a multi-generation PPDU.

公开(公告)号：US20230314549A1

公开(公告)日：2023-10-05

申请号：US17806598

申请日：2022-06-13

Applicant: QUALCOMM Incorporated

Inventor： Pooria PAKROOH ,  Bin TIAN ,  Stephen Jay SHELLHAMMER ,  Ishaque Ashar KADAMPOT

IPC: G01S5/02 ,  H04B1/7163

CPC classification number: G01S5/0268 ,  H04B1/7163

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an initiator network node may transmit a first sensing signal for sensing an object using ultra-wideband sensing. The initiator network node may receive, from a responder network node, a second sensing signal, that is based at least in part on the first sensing signal, for sensing the object using the ultra-wideband sensing. The initiator network node may obtain a location of the object relative to the initiator network node and the responder network node based at least in part on the first sensing signal and the second sensing signal. Numerous other aspects are described.

公开(公告)号：US20220346187A1

公开(公告)日：2022-10-27

申请号：US17237908

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin ZHANG ,  Stephen Jay SHELLHAMMER ,  Kapil RAI ,  Jayanand ASOK KUMAR ,  Vikram KANDUKURI ,  Sarin MATHEN

IPC: H04W80/02 ,  H04B17/354 ,  H04B17/336

Abstract: In an aspect, a wireless device is configured to transmit a physical layer protocol data unit on one or more channels, wherein the physical layer protocol data unit includes a first portion and a second portion. The first portion includes a signal length field indicating a duration of a transmission of the physical layer protocol data unit. The second portion includes a plurality of Wi-Fi sensing fields. The wireless device is configured to receive a reflected signal and a leakage signal associated with the physical layer protocol data unit. The reflected signal includes the physical layer protocol data unit reflected off of a target object. The leakage signal is associated with the physical layer protocol data unit.