公开(公告)号：US20220140942A1

公开(公告)日：2022-05-05

申请号：US17513849

申请日：2021-10-28

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00

Abstract: This disclosure provides methods, devices and systems for interpreting reserved bits and values associated with different releases of a wireless communication protocol. In some implementations, a wireless communication device may determine whether to terminate or continue reception of a physical layer protocol convergence protocol (PLCP) protocol data unit (PPDU) if it detects a reserved bit in the physical layer preamble set to an unsupported value (such as a value different than what is defined by a version or release of the wireless communication protocol supported by the wireless communication device). In some other implementations, a wireless communication device may determine whether to terminate or continue reception of a PPDU if it detects a field in the physical layer preamble set to a reserved value (such as defined by a version or release of the wireless communication protocol supported by the wireless communication device).

公开(公告)号：US20210344541A1

公开(公告)日：2021-11-04

申请号：US17244500

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00

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：US20210091887A1

公开(公告)日：2021-03-25

申请号：US17030034

申请日：2020-09-23

Applicant: QUALCOMM Incorporated

Inventor： James Simon CHO ,  Youhan KIM ,  Tao-Fei Samuel NG ,  Vincent Knowles JONES, IV

IPC: H04L1/00 ,  H04L5/00 ,  H03M13/37 ,  H03M13/29

Abstract: This disclosure provides methods, devices and systems for acknowledgement and retransmission, and more specifically, to methods, devices and systems that enable a secondary wireless channel to provide acknowledgements of data transmitted on a primary wireless channel concurrently with the reception of additional data on the primary wireless channel. In some implementations, a transmitting device may transmit wireless packets including multiple codewords to a receiving device via a first wireless channel. The receiving device may attempt to decode the received codewords based on primary information in the codewords. The receiving device may then transmit to the transmitting device, via a second wireless channel, a codeword acknowledgement that identifies codewords that the receiving device did not successfully decode. The transmitting device may then transmit parity information to the receiving device via the first wireless channel that aids the receiving device in decoding the identified codewords.

公开(公告)号：US20190141570A1

公开(公告)日：2019-05-09

申请号：US16173481

申请日：2018-10-29

Applicant: QUALCOMM Incorporated

Inventor： Lochan VERMA ,  Bin TIAN ,  Lin YANG ,  Jialing Li CHEN ,  Sameer VERMANI ,  Youhan KIM

IPC: H04W28/06

Abstract: The present disclosure provides techniques for preamble puncturing in wireless local area networks (WLANs). In one implementation, an access point (AP) can identify, within a channel width, one or more bandwidth regions associated with incumbent technologies. The AP can broadcast or advertise, to a basic service set (BSS) initiated or started by the AP, a preamble puncture pattern in one or more management frames, the preamble puncture pattern being based on the bandwidth regions associated with incumbent technologies. In another implementation, an AP can identify a single user (SU) preamble puncture transmission, and can signal in a common portion of a SIG-B field of a multi-user (MU) PPDU format that a resource unit (RU) size is assigned to a same user to indicate the SU preamble puncture transmission. Although these techniques may be used in any frequency band, typical frequency bands may include, but are not limited to, a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.

公开(公告)号：US20180159657A1

公开(公告)日：2018-06-07

申请号：US15890264

申请日：2018-02-06

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Gang DING ,  Youhan KIM ,  Sameer VERMANI

IPC: H04L1/00 ,  H04L27/12 ,  H04L1/06 ,  H03M13/11 ,  H03M13/23 ,  H04B7/0456 ,  H04B7/0452 ,  H04B7/06

CPC classification number: H04L1/0041 ,  H03M13/1177 ,  H03M13/235 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0669 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/0625 ,  H04L27/12

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 number of data symbols for transmitting a data payload. The apparatus is configured to determine a number of payload bits for transmitting the data payload based on the determined number of data symbols. The apparatus is configured to transmit a data frame. The data frame includes a signal field and data symbols encoded based on the data payload, the determined number of data symbols, and the determined number of payload bits, in which the data symbols are encoded using LDPC encoding or BCC encoding.

公开(公告)号：US20250150978A1

公开(公告)日：2025-05-08

申请号：US18503943

申请日：2023-11-07

Applicant: QUALCOMM Incorporated

Inventor： Alfred ASTERJADHI ,  Gaurang NAIK ,  George CHERIAN ,  Abhishek Pramod PATIL ,  Sai Yiu Duncan HO ,  Youhan KIM ,  Guido Robert FREDERIKS

IPC: H04W52/24 ,  H04W52/26 ,  H04W52/32 ,  H04W52/36

Abstract: This disclosure provides methods, components, devices and systems for dynamic transmit power control. Some aspects more specifically relate to dynamically enable transmit power during a transmission opportunity (TxOP) to minimize the transmit power being used for message transmissions. In some implementations, a wireless device may transmit, at a first transmit power, a first message that indicates that the wireless device will transmit one or more second messages during a TxOP. The wireless device may select a second transmit power for the second message(s) and a plurality of transmission parameters, wherein the second transmit power satisfies a metric for the one or more second messages. The wireless device may transmit the second message(s) during the TxOP at the second transmit power and in accordance with respective values of the plurality of transmission parameters.

公开(公告)号：US20250125934A1

公开(公告)日：2025-04-17

申请号：US18603011

申请日：2024-03-12

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Youhan KIM ,  Qifan CHEN ,  Chih-Yuan CHU

IPC: H04L5/00 ,  H04L27/26

Abstract: This disclosure provides methods, components, devices and systems for reducing out-of-band emission (OOBE) for transmissions associated with a distributed resource unit (RU) (dRU) allocation. Some aspects more specifically relate to introducing more unevenness in terms of tone spacing to a first subset of dRUs associated with a given bandwidth and maintaining relatively more even tone spacing for a second subset of dRUs associated with that given bandwidth. In some implementations, for example, a complete set of dRUs associated with a bandwidth may include a first subset of dRUs and a second subset of dRUs, with dRUs of the first subset having more uneven tone spacings as compared to dRUs of the second subset. In some aspects, the first subset of dRUs may include dRUs associated with relatively fewer tones as compared to dRUs of the second subset.

公开(公告)号：US20250125919A1

公开(公告)日：2025-04-17

申请号：US18952137

申请日：2024-11-19

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00

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 pilot tone designs that support distributed transmission. A transmitting device may modulate a physical layer convergence protocol (PLCP) protocol data unit (PPDU) on a number (M) of tones representing a logical RU associated with the legacy tone plan and may further map the M tones to M noncontiguous subcarrier indices associated with a wireless channel. The transmitting device may transmit the PPDU, over the wireless channel, with a number (N) of pilot tones each having a respective location relative to the M tones as mapped to the M noncontiguous subcarrier indices. In some implementations, the relative locations of the N pilot tones may be different than relative locations of a number (K) of pilot tones associated with the logical RU.

公开(公告)号：US20250096932A1

公开(公告)日：2025-03-20

申请号：US18658764

申请日：2024-05-08

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Sameer VERMANI ,  Bin TIAN ,  Youhan KIM ,  Qifan CHEN

IPC: H04L1/00 ,  H04W28/04

Abstract: This disclosure provides methods, components, devices and systems for managing long low-density parity check (LDPC) codewords in ultra high reliability (UHR) systems. One method for wireless communication may be performable at a transmitter device or node. The method may include transmitting signaling to a receiver device or node indicating that the transmitter device supports use of a first LDPC codeword length that is greater than or equal to a threshold LDPC codeword length. The method may further include transmitting an LDPC codeword of the first LDPC codeword length (e.g., a long LDPC codeword) to the receiver device when one or more conditions are satisfied.

公开(公告)号：US20250063382A1

公开(公告)日：2025-02-20

申请号：US18936953

申请日：2024-11-04

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Alecsander Petru EITAN ,  Youhan KIM

IPC: H04W16/28 ,  H04B7/0417 ,  H04B7/06

Abstract: This disclosure provides methods, devices and systems for increasing carrier frequencies for wireless communications in wireless local area networks. Some implementations more specifically relate to beamforming training operations that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a beamforming initiator may initiate a beamforming training operation by transmitting a number (N) of beamforming training (BFT) packets in N TX beam directions, respectively, on a carrier frequency above 7 GHz. The beamforming responder receives one or more of the BFT packets and provides feedback to the beamforming initiator indicating the TX beam direction associated with the BFT packet having the highest received signal power. In some aspects, the beamforming responder may train its RX antennas for RX beamforming concurrently while the beamforming initiator trains its TX antennas. In some other aspects, the beamforming responder may train its RX antennas after the beamforming initiator trains its TX antennas.