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：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.

公开(公告)号：US20250030503A1

公开(公告)日：2025-01-23

申请号：US18356141

申请日：2023-07-20

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Lin YANG ,  Bin TIAN

IPC: H04L1/1607 ,  H04L5/00 ,  H04W72/12

Abstract: This disclosure provides methods, components, devices and systems for partial bandwidth feedback for 480 and 640 MHz transmission in Wi-Fi. Some aspects more specifically relate to the inclusion of a partial bandwidth information field in a null data packet (NDP) announcement frame that indicates for which frequency portions of the 480 or 640 MHz channel bandwidth to generate channel information feedback. In some examples, a receiving device (for example, a station (STA)) may perform channel estimation on an NDP and transmit a beamforming report to the transmitting device (for example, an access point (AP)) based on the NDP. The transmitting device schedules the NDP using an NDP announcement frame, which includes the partial bandwidth information field. The partial bandwidth information field in the NDP announcement frame may include a frequency resolution field and a bitmap with values and lengths based on the channel bandwidth being 480 or 640 MHz.

公开(公告)号：US20240297703A1

公开(公告)日：2024-09-05

申请号：US18434611

申请日：2024-02-06

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Jialing Li CHEN ,  Sameer VERMANI

IPC: H04B7/06 ,  H04B7/0417 ,  H04L25/02

CPC classification number: H04B7/066 ,  H04B7/0417 ,  H04L25/0204 ,  H04L25/0228

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for techniques for reducing feedback information in an extremely high throughput (EHT) wireless local area network (WLAN). A receiving device (beamformee), such as a station (STA), may receive a sounding signal from a transmitting device (beamformer), such as an access point (AP), and transmit channel feedback. The receiving device may transmit the channel feedback as part of a reduced compressed beamforming feedback (CBF) operation that includes determining a first set of channel characteristics. The receiving device may select a subset of the first set of channel characteristics and determine a set of differential characteristics based on the subset. The transmitting device may then transmit the sets of characteristics as reduced CBF to the transmitting device. The transmitting device may determine a channel estimation for beamformed signaling based on the reduced CBF.

公开(公告)号：US20240171339A1

公开(公告)日：2024-05-23

申请号：US18531411

申请日：2023-12-06

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN

IPC: H04L5/00 ,  H04W72/0453 ,  H04W72/1263

CPC classification number: H04L5/0048 ,  H04W72/0453 ,  H04W72/1263

Abstract: This disclosure provides methods, devices and systems for configuring tones for a distributed resource unit (RU) across a channel bandwidth to improve frequency diversity and available transmit power. A distributed RU may include a set of tones that may be allocated across a bandwidth that is greater than a bandwidth of the aggregate quantity of tones. The set of tones may include a set of data tones grouped into contiguous groups of one or more data tones and a set of non-contiguous pilot tones. The data tones may be mapped to useful tones over a center portion of a half-bandwidth of the channel. The pilot tones may be mapped near edge tones at edges of the channel bandwidth or near direct current tones at a center of the channel bandwidth. A system bandwidth may include one or more channel bandwidths associated with distributed RUs.

公开(公告)号：US20240080820A1

公开(公告)日：2024-03-07

申请号：US18260900

申请日：2021-03-12

Applicant: QUALCOMM Incorporated

Inventor： Yangjun ZHANG ,  Lin YANG ,  Yusheng YANG ,  Sandip HOMCHAUDHURI ,  James Simon CHO ,  Alireza RAISSINIA

IPC: H04W72/0453 ,  H04W72/20

CPC classification number: H04W72/0453 ,  H04W72/20 ,  H04W84/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter may detect at least one distance between the transmitter and a receiver. The transmitter may transmit, to the receiver, information using a selected band of a wide band or a narrow band, where the selected band is based at least in part on the at least one distance. Similarly, in some aspects, a receiver may detect at least one distance between the receiver and a transmitter. The receiver may receive, from the transmitter, information using a selected band of a wide band or a narrow band, where the selected band is based at least in part on the at least one distance. Numerous other aspects are described.

公开(公告)号：US20230422078A1

公开(公告)日：2023-12-28

申请号：US18463197

申请日：2023-09-07

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Sameer VERMANI ,  Bin TIAN ,  Lin YANG

IPC: H04W28/02 ,  H04W28/06

CPC classification number: H04W28/0231 ,  H04W28/06

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARQ), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.

公开(公告)号：US20230361822A1

公开(公告)日：2023-11-09

申请号：US17738892

申请日：2022-05-06

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin Tian ,  Alfred Asterjadhi ,  Youhan Kim

IPC: H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0619 ,  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：US20230354046A1

公开(公告)日：2023-11-02

申请号：US18350904

申请日：2023-07-12

Applicant: QUALCOMM Incorporated

Inventor： Sameer VERMANI ,  Bin TIAN ,  Jialing Li CHEN ,  Lin YANG

IPC: H04W16/10 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06

CPC classification number: H04W16/10 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04W84/10

Abstract: Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a processing system configured to generate a first frame including an indication of unused resources in a first basic service set (BSS) available to be shared with one or more wireless nodes in one or more second BSSs. The apparatus also includes a first interface configured to output the first frame for transmission to the one or more wireless nodes.