公开(公告)号：US20210203531A1

公开(公告)日：2021-07-01

申请号：US17200625

申请日：2021-03-12

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Bin Tian ,  Alfred Asterjadhi ,  George Cherian

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/00

Abstract: Techniques are described herein that illustrate a feedback system to configure various format parameters of physical layer convergence procedure protocol data units (PPDUs) transmitted across a communication link. A receiving device may determine a Doppler shift or a delay spread of a signal received from a transmitting device. The receiving device may determine one or more format parameters for a future PPDU based on the Doppler shift or the delay spread. The receiving device may transmit an indication that includes the format parameters for the future PPDU to the transmitting device. The transmitting device may modify one or more format parameters of a PPDU based on the information in the indication. In some cases, the receiving device may indicate characteristics of mid-ambles, a type of PPDU, a guard interval, high efficiency long training field size for a future PPDU.

公开(公告)号：US11026172B2

公开(公告)日：2021-06-01

申请号：US16239479

申请日：2019-01-03

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W52/02 ,  H04W72/04 ,  H04L29/06 ,  H04W84/12 ,  H04L1/00

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for establishing communications with one or more devices. In one aspect, a first device generates a wake-up radio (WUR) frame, the WUR frame including a media access control (MAC) header and a frame check sequence (FCS) having a cyclic redundancy check (CRC) or a message integrity check (MIC). The first device may determine the FCS based, at least in part, on the MAC header and basic service set identifier (BSSID) information associated with the first device. The first device may output the WUR frame for transmission to one or more devices. A second device may receive the WUR frame from the first device and determine whether the WUR frame is directed to the second device based, at least in part, on comparing the FCS of the WUR frame with a calculated FCS.

公开(公告)号：US10999014B2

公开(公告)日：2021-05-04

申请号：US16536280

申请日：2019-08-08

Applicant: QUALCOMM Incorporated

Inventor： Bin Tian ,  Hemanth Sampath ,  Sameer Vermani ,  Lin Yang ,  Dung Ngoc Doan ,  Simone Merlin ,  Alfred Asterjadhi ,  Jialing Li Chen ,  Stephen Jay Shellhammer

IPC: H04L1/00 ,  H04L1/18 ,  H04W84/12

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 station (STA) may send a HARQ transmission to another STA. The HARQ protocol may support the use of different types of feedback from the receiving STA to control the HARQ retransmission process. This disclosure provides example message formats to support HARQ transmission and HARQ feedback in a WLAN.

公开(公告)号：US20210007113A1

公开(公告)日：2021-01-07

申请号：US17030242

申请日：2020-09-23

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  George Cherian ,  Abhishek Pramod Patil ,  Alfred Asterjadhi ,  Venkata Ramanan Venkatachalam Jayaraman

IPC: H04W72/12 ,  H04B7/0413 ,  H04B7/026 ,  H04B7/06

Abstract: Various aspects of the disclosure relate to distributed multiple-input multiple-output (MIMO) communication such as coordinated beamforming or Joint MIMO. In some aspects, distributed MIMO is used to support communication in a cluster of wireless nodes (e.g., access points). A distributed MIMO scheduling scheme as taught herein is used to schedule the wireless nodes (e.g., access points and/or stations) operating within the cluster. For example, selected stations may be triggered to communicate with respective access points.

公开(公告)号：US20210006361A1

公开(公告)日：2021-01-07

申请号：US16917605

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 ,  H04L5/00 ,  H04L1/16 ,  H04W80/02

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 determine whether a first feedback message received from the second WLAN device includes HARQ acknowledgement information or non-HARQ acknowledgment information. The first feedback message may be a HARQ Block Acknowledgement (H-BA) message having a multi-station Block ACK (M-BA) frame format that includes HARQ acknowledgment information. The first WLAN device may transmit a second HARQ frame to the second WLAN device in response to determining the first feedback message includes the HARQ acknowledgment information. The first WLAN device may transmit a non-HARQ frame in response to determining the first feedback message includes non-HARQ acknowledgement information.

公开(公告)号：US10757638B2

公开(公告)日：2020-08-25

申请号：US16009145

申请日：2018-06-14

Applicant: QUALCOMM Incorporated

Inventor： Alfred Asterjadhi ,  George Cherian ,  Abhishek Pramod Patil ,  Yan Zhou ,  Venkata Ramanan Venkatachalam Jayaraman

IPC: H04W48/08 ,  H04W48/16 ,  H04W16/14 ,  H04W48/10 ,  H04W8/00 ,  H04W48/12 ,  H04W48/20

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for advertising operating channels that are being operated in an unlicensed frequency band. One or more access points (APs) may transmit discovery information on a dedicated discovery channel for the unlicensed frequency band. The discovery information may indicate at least one operating channel that is being used by an AP for providing wireless access. The discovery information also may include other information useful for a station (STA) to discover APs, operating channels, and operating parameters. The STA may monitor the dedicated discovery channel to obtain the discovery information without conducting an active scanning or passive scanning procedure.

公开(公告)号：US20200260488A1

公开(公告)日：2020-08-13

申请号：US16790624

申请日：2020-02-13

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Maarten Menzo Wentink ,  Abhishek Pramod Patil ,  Alfred Asterjadhi

IPC: H04W74/08 ,  H04W56/00

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for sharing a transmission opportunity (TXOP) of a wireless channel. A first wireless local area network (WLAN) device can win a contention-based procedure to become an owner of the TXOP and determine to use the TXOP as a multi-device transmission opportunity (mTXOP). Although the first WLAN device is the owner of the mTXOP, the first WLAN device may allocate resources from the mTXOP to share with other WLAN devices. During a first portion of the mTXOP, the first WLAN device allocate subordinate transmission opportunities (sub-TXOPs) for use by other WLAN devices during a second portion of the mTXOP. The allocation of sub-TXOPs may be prepared based on fairness considerations, latency considerations, or both. In some implementations, a sub-TXOP may be allocated for a non-WLAN device, such as a wireless wide area network (WWAN) apparatus.

公开(公告)号：US10716054B2

公开(公告)日：2020-07-14

申请号：US16141866

申请日：2018-09-25

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil

IPC: H04W48/16 ,  H04W40/24 ,  H04W48/08 ,  H04W48/14 ,  H04W48/18 ,  H04W84/12 ,  H04W48/12

Abstract: Methods and systems for accessing networks prohibit uncontrolled communications over a designated network. In some aspects, a method of controlling network access is disclosed. The method comprises transmitting, by a first access point, a first beacon over a first network to a station, the first beacon including information allowing the station to associate with the first access point. The method also comprises receiving a probe request at the first access point over the first network from the station, the probe request including a request for rules for associating with a second network. The method additional comprises generating a probe response to include the rules regarding associating with the second network, wherein the rules do not permit uncontrolled communications over the second network. The method further comprises transmitting the probe response from the first access point to the station over the first network.

公开(公告)号：US10660130B2

公开(公告)日：2020-05-19

申请号：US16029467

申请日：2018-07-06

Applicant: QUALCOMM Incorporated

Inventor： Alfred Asterjadhi ,  George Cherian ,  Maarten Menzo Wentink ,  Abhishek Pramod Patil

IPC: H04W74/08 ,  H04W74/04 ,  H04W72/04 ,  H04W84/12 ,  H04W84/18

Abstract: This disclosure provides systems, methods and apparatuses for coordinating access to a shared wireless medium among multiple master devices operating on the same frequency band. In some implementations, master devices may contend for access to the shared medium during a medium reservation window (MRW). During the MRW, master devices may advertise their intent to reserve at least a portion of the shared medium for one or more timeslots within a subsequent medium utilization period. The reservation messages may be broadcast to other master devices in the vicinity to prevent other master devices from accessing the wireless medium during a reserved timeslot. In some implementations, the owner of a timeslot may share at least a portion of its timeslot with other master devices. For example, the timeslot owner may enable other master devices to utilize an unused portion of the wireless medium, such as unused channels, spatial streams, or time.

公开(公告)号：US10660038B2

公开(公告)日：2020-05-19

申请号：US16022586

申请日：2018-06-28

Applicant: QUALCOMM Incorporated

Inventor： Alfred Asterjadhi ,  George Cherian ,  Yanjun Sun ,  Santosh Paul Abraham ,  Bin Tian

IPC: H04W52/02 ,  H04W52/54 ,  H04W12/10 ,  H04W84/12

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for generating wake-up radio (WUR) frames formats and implementing WUR communications between transmitting and receiving wireless devices. A transmitting wireless device may identify one or more intended receiving wireless devices for which to send a WUR frame. The transmitting wireless device may generate the WUR frame, where the WUR frame has a first portion that includes a first field. The first field may indicate whether the WUR frame is a fixed length frame or a variable length frame. The transmitting wireless device may also determine a frame check sequence (FCS) type for use with a WUR frame for transmission. The FCS portion may be capable of being one of a plurality of FCS types. The transmitting wireless device may transmit the WUR frame to the one or more intended receiving wireless devices.