公开(公告)号：US20210144778A1

公开(公告)日：2021-05-13

申请号：US17093411

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Bin Tian ,  Stephen Jay Shellhammer

IPC: H04W74/08 ,  H04W48/06 ,  H04W12/06 ,  H04W4/90

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for priority access on a shared wireless channel. A priority station (STA), an access point (AP), or a network operator may activate a priority access service. The priority access service provides priority access to authorize priority STAs by allowing them to use more aggressive contention parameters for contention-based access of the wireless channel as compared to other STAs. In some implementations, non-priority STAs may be configured with weakened contention parameters to increase or ensure the likelihood that a priority STA will win contention for access to the wireless channel.

公开(公告)号：US20210143955A1

公开(公告)日：2021-05-13

申请号：US17089303

申请日：2020-11-04

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04

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：US20210135792A1

公开(公告)日：2021-05-06

申请号：US16668769

申请日：2019-10-30

Applicant: QUALCOMM Incorporated

Inventor： James Simon Cho ,  Tao-Fei Samuel Ng ,  Youhan Kim ,  Bin Tian ,  Jialing Li Chen ,  Stephen Jay Shellhammer ,  Vincent Knowles Jones, IV

IPC: H04L1/18

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a hybrid automatic repeat request (HARQ) protocol in a wireless local area network (WLAN). A first WLAN device may generate a first HARQ packet for transmission to a second WLAN device. The first WLAN device may determine a first basic service set (BSS) indicator and a second BSS indicator for a BSS associated with the first WLAN device and the second WLAN device. The first BSS indicator and the second BSS indicator may be indicative of a BSS identifier (BSSID) of the BSS. The first WLAN device may output the first HARQ packet for transmission to the second WLAN device. The first HARQ packet may include the first BSS indicator and the second BSS indicator in one or more fields of a physical layer (PHY) header of the first HARQ packet.

公开(公告)号：US10958391B2

公开(公告)日：2021-03-23

申请号：US14938794

申请日：2015-11-11

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Dung Doan ,  Jialing Li Chen ,  Youhan Kim

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One example apparatus includes a memory that stores instructions. The apparatus further includes a processor coupled with the memory. The processor and the memory are configured to determine a total bandwidth for a transmission of a message, the total bandwidth including a plurality of tones. The processor is further configured to divide the plurality of tones in the total bandwidth into one or more 26-, 52-, 106-, 242-, or 996-tone blocks. The processor is further configured to determine an indication. The indication assigns one or more of the one or more tone blocks to a first wireless communication device. The apparatus further includes a transmitter configured to transmit the indication to at least the first wireless communication device or a second device.

公开(公告)号：US20210084654A1

公开(公告)日：2021-03-18

申请号：US17022063

申请日：2020-09-15

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Dung Ngoc Doan ,  Jialing Li Chen ,  Didier Johannes Richard Van Nee

IPC: H04W72/04 ,  H04L29/08

Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve a desired amplitude distribution. Some implementations more specifically relate to performing an encoding operation to shape the amplitudes of the resultant symbols such that the amplitudes have a non-uniform distribution. In some implementations of the non-uniform distribution, the probabilities associated with the respective amplitudes generally increase with decreasing amplitude. Some implementations enable the tracking of MPDU boundaries to facilitate successful decoding by a receiving device. Additionally or alternatively, some implementations enable the determination of a packet length after performing the amplitude shaping, which enables a transmitting device to determine the number of padding bits to add to the payload and to signal the packet length to a receiving device so that the receiving device may determine the duration of the packet.

公开(公告)号：US20210045151A1

公开(公告)日：2021-02-11

申请号：US16988631

申请日：2020-08-08

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Lin Yang ,  Bin Tian ,  Vincent Knowles Jones, IV ,  Youhan Kim ,  Ahmed Ragab Elsherif

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/04

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.

公开(公告)号：US20210029632A1

公开(公告)日：2021-01-28

申请号：US17068509

申请日：2020-10-12

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian ,  Lochan Verma

IPC: H04W52/02 ,  H04L5/00 ,  H04L27/26 ,  H04L5/14 ,  H04L12/825

Abstract: This disclosure provides systems, methods and apparatuses for indicating a data rate of a packet. The transmitting device may select the data rate of a data field of the packet to be transmitted to the receiving device, and may select a pattern to embed within a preamble of the packet based on the selected data rate. In some implementations, the transmitting device may select a first structure including a first number of instances of a sequence or its logical complement if the selected data rate is a low data rate, and may select a second structure including a second number of instances of the sequence or its logical complement if the selected data rate is a high data rate.

公开(公告)号：US20210014792A1

公开(公告)日：2021-01-14

申请号：US16924567

申请日：2020-07-09

Applicant: QUALCOMM Incorporated

Inventor： Geert Arnout Awater ,  Stephen Jay Shellhammer ,  Didier Johannes Richard Van Nee ,  Bin Tian

IPC: H04W52/02 ,  H04L27/26 ,  H04L1/00

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for determining one or more tone sequences (for example, for wake-up procedures). In one aspect, an access point (AP) may wake a mobile station (STA) from a low power mode using a wake-up packet, where an ON symbol of the wake-up packet is modulated using a tone sequence. To reduce the likelihood of a STA falsely identifying the ON symbol as a packet preamble, the AP may implement a tone sequence that satisfies a correlation metric threshold. For example, for a set of candidate tone sequences, each tone sequence may be associated with a correlation metric and peak-to-average-power ratio (PAPR) coordinate pair, and the tone sequence for modulating the ON symbol of the wake-up packet may be selected from a lower convex hull of the coordinate pairs.

公开(公告)号：US20210007006A1

公开(公告)日：2021-01-07

申请号：US16917225

申请日：2020-06-30

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Alfred Asterjadhi ,  Stephen Jay Shellhammer ,  Dung Ngoc Doan ,  Bin Tian ,  George Cherian ,  Abhishek Pramod Patil

IPC: H04W28/04 ,  H04L1/00 ,  H04L1/18

Abstract: This disclosure provides methods, devices and systems of wireless communication in accordance with hybrid automatic repeat request (HARQ) techniques. Some implementations more specifically relate to aligning aggregate medium access control (MAC) protocol data unit (A-MPDU) subframes with codeword boundaries in a physical-layer service data unit (PSDU). The alignment may be performed by selectively adding padding bits to the PSDU based on the size of each A-MPDU subframe and the lengths of the codewords. In some aspects, an A-MPDU subframe may be aligned with a first codeword of the PSDU so that the first A-MPDU subframe is encoded exclusively within the first codeword. In some other aspects, an A-MPDU subframe may be aligned with two or more contiguous codewords of the PSDU so that the two or more contiguous codewords include the A-MPDU subframe and no portions of any other A-MPDU subframe.

公开(公告)号：US20210006360A1

公开(公告)日：2021-01-07

申请号：US16917543

申请日：2020-06-30

Applicant: QUALCOMM Incorporated

Inventor： Alfred Asterjadhi ,  George Cherian ,  Abhishek Pramod Patil ,  Lochan Verma ,  Jialing Li Chen ,  Stephen Jay Shellhammer ,  Dung Ngoc Doan ,  Bin Tian

IPC: H04L1/18 ,  H04W74/08

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a hybrid automatic repeat request (HARQ) protocol in a wireless local area network (WLAN). In some aspects, a first WLAN device may transmit a first HARQ frame to a second WLAN device. The first WLAN device may receive a first feedback message from the second WLAN device. The first feedback message may be a HARQ Block Acknowledgement (H-BA) message. The first WLAN device may determine to enable the HARQ protocol based on the first feedback message. The first WLAN device may receive an indication of an amount of memory available at the second WLAN device for processing HARQ transmissions. The first WLAN device may transmit a second HARQ frame to the second WLAN device based, at least in part, on the amount of memory available at the second WLAN device for processing HARQ transmissions.