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公开(公告)号：US09843411B2
公开(公告)日：2017-12-12
申请号：US15132990
申请日：2016-04-19
Applicant: QUALCOMM Incorporated
Inventor： Qinghai Gao , Nathaniel David Houghton , Ahmed Ragab Elsherif , Ehab Tahir
IPC: H04L1/00 , H04B7/0452 , H04W72/08
CPC classification number: H04L1/0003 , H04B7/0452 , H04L1/003 , H04W72/085
Abstract: Wireless node selects modulation coding schemes (MCS) and number of spatial streams for transmitting data to devices via a MU-MIMO transmission based on the total number of spatial streams. In one implementation, a wireless node selects first MCS, first number of spatial stream(s) for a first device, and total number of spatial streams to be used in the MU-MIMO transmission so as to maximize the data rate to the first device, then selects a second MCS and a second number of spatial stream(s) for a second device based on the selected total number of spatial streams. In another implementation, the wireless node toggles the first selection of the MCS and spatial stream(s) between the first and second devices for fairness purposes. In another implementation, a wireless selects the MCS and the spatial streams for the receiving nodes so as to maximize the aggregate data rate for the MU-MIMO transmission.
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公开(公告)号：US12267726B2
公开(公告)日：2025-04-01
申请号：US17722564
申请日：2022-04-18
Applicant: QUALCOMM Incorporated
Inventor： Ahmed Ragab Elsherif , Nicholas Kucharewski , Simon Jan Brand , Srinivas Katar , Xiaolong Huang , Sandip Homchaudhuri , Nathaniel David Houghton , Aravind Seetharaman
IPC: H04W28/10 , H04B7/0452 , H04W28/24 , H04W84/12
Abstract: Systems and methods for selectively enabling multi-user (MU) communications are disclosed. In some implementations, an access point (AP) obtains packets associated with a traffic flow, and obtains at least one of service-level agreement (SLA) parameters associated with the traffic flow, attributes of the traffic flow, or network parameters associated with a basic service set (BSS) that includes the AP. The AP provides an indication of whether the traffic flow is suitable for transmission as a single-user (SU) multiple-input multiple output (MIMO) (SU-MIMO) communication, as an MU-MIMO communication, as an orthogonal frequency division multiple access (OFDMA) communication, or as a partial bandwidth (BW) MU-MIMO communication to a WLAN subsystem of the AP, the indication being based on one or more of the SLA parameters, the traffic flow attributes, or the network parameters. The AP initiates transmission of the one or more packets based on the indication.
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公开(公告)号：US10135504B2
公开(公告)日：2018-11-20
申请号：US15294473
申请日：2016-10-14
Applicant: QUALCOMM Incorporated
Inventor： Ahmed Ragab Elsherif , Nathaniel David Houghton
IPC: H04B7/04 , H04B7/0452 , H04L5/00 , H04W74/08 , H04W84/12
Abstract: The disclosure provides techniques for sounding sequence protection in multi-user multiple-input-multiple-output (MU-MIMO) communications for wireless local area networks (WLANs). An access point (AP) may select a station (STA) from multiple STAs in a MU-MIMO group. The AP may then transmit a request-to-send (RTS) frame, where the RTS is addressed to the selected STA. The AP may receive a clear-to-send (CTS) frame from the selected station and may perform, in response to receiving the CTS frame, a sounding sequence with the MU-MIMO group. After completion of the sounding sequence, the AP may transmit MU-MIMO data communications to at least one of the STAs in the MU-MIMO group.
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公开(公告)号：US11832282B2
公开(公告)日：2023-11-28
申请号：US17751991
申请日：2022-05-24
Applicant: QUALCOMM Incorporated
Inventor： Nathaniel David Houghton , Xiaolong Huang , Naveen Gangadharan
IPC: H04W72/12 , H04W84/12 , H04W72/52 , H04W72/1268 , H04W72/23
CPC classification number: H04W72/52 , H04W72/1268 , H04W72/23 , H04W84/12
Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for adjusting a packet duration for triggered uplink (UL) transmissions to an access point (AP) from one or more stations (STAs). In one aspect, the AP may estimate an amount of data that a STA has queued for UL transmission and select the packet duration based on the estimated amount of queued UL data. The AP may transmit a trigger frame that solicits UL data from the STA and indicates the selected packet duration. In response, the AP may receive an UL packet from the STA and determine an amount of UL data queued in the STA based on the UL packet. In some implementations, the AP may selectively adjust the packet duration for UL transmissions based on the UL packet, the determined amount of UL data queued in the STA, or both.
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5.发明申请公开(公告)号：US20170295516A1
公开(公告)日：2017-10-12
申请号：US15094677
申请日：2016-04-08
Applicant: QUALCOMM Incorporated
Inventor： Qinghai Gao , Nathaniel David Houghton , Ehab Tahir
CPC classification number: H04W28/065 , H04L1/1848 , H04L47/27 , H04L47/34 , H04W24/04 , H04W28/0242 , H04W84/12
Abstract: Methods, systems, and devices for wireless communication are described. A device may identify an indication of a station load in a wireless local area network (WLAN) and estimate a delay to fill a packet hole at the medium access control (MAC) layer based on the station load. The estimated time period may be used to adjust a reorder timeout value. In some cases the reorder timeout value may be increased when the station load is high to reduce the likelihood that packet holes will be flushed to higher layers before the device is served with the missing packets. In some cases, the station load may be determined based on a message received from a serving access point (AP).
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Patent Agency Ranking
公开(公告)号：US20240090010A1
公开(公告)日：2024-03-14
申请号：US17931524
申请日：2022-09-12
Applicant: QUALCOMM Incorporated
Inventor： Abdel Karim Ajami , Sai Yiu Duncan Ho , Alfred Asterjadhi , George Cherian , Abhishek Pramod Patil , Yanjun Sun , Gaurang Naik , Naveen Gangadharan , Nathaniel David Houghton , Srinivas Katar , Xiaolong Huang
CPC classification number: H04W72/085 , H04W24/10
Abstract: Techniques related to wireless communication are disclosed. Some aspects of the disclosure relate to devices and methods for improving a quality of service (QoS) by reporting near-real-time feedback relating to a delay experienced by packets queued for transmission, and dynamically scheduling a wireless station to transmit and meet its QoS. A wireless station (STA) obtains one or more packets for transmission, the packets being associated with a delay condition. The STA outputs for transmission a delay status report that includes information relating to the delay condition associated with the one or more packets. In response, the STA obtains a resource allocation for transmission of the one or more packets according to the information relating to the delay condition. Other aspects, embodiments, and features are also claimed and described.
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7.发明申请公开(公告)号：US20180242344A1
公开(公告)日：2018-08-23
申请号：US15932209
申请日：2018-02-16
Applicant: QUALCOMM Incorporated
Inventor： Xiaolong Huang , Madhan Jaganathan , Nathaniel David Houghton , Madhavan Nair , Srinivas Katar , Ahmed Ragab Elsherif
CPC classification number: H04W72/1257 , H04W72/04 , H04W72/1252 , H04W84/12
Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determine a scheduling metric for each respective station of a plurality of stations. The scheduling metric for each station may be based on an effective spatial-time-frequency physical layer (PHY) capability for the station and a consumption rate of spatial-time-frequency resources by the respective station. The effective spatial-time-frequency PHY capability for the station may be a product of a target percentage of spatial-time resources allocated to the station, an effective number of spatial streams supported by the respective station, and a maximum bandwidth. The consumption rate of spatial-time-frequency resources may be a transmit opportunity (TXOP) moving average of consumption rate by the station. The apparatus may be configured to schedule each station of the plurality of stations for communication based on the determined scheduling metric for each respective station.
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公开(公告)号：US20170302401A1
公开(公告)日：2017-10-19
申请号：US15132990
申请日：2016-04-19
Applicant: QUALCOMM Incorporated
Inventor： Qinghai Gao , Nathaniel David Houghton , Ahmed Ragab Elsherif , Ehab tahir
CPC classification number: H04L1/0003 , H04B7/0452 , H04L1/003 , H04W72/085
Abstract: Wireless node selects modulation coding schemes (MCS) and number of spatial streams for transmitting data to devices via a MU-MIMO transmission based on the total number of spatial streams. In one implementation, a wireless node selects first MCS, first number of spatial stream(s) for a first device, and total number of spatial streams to be used in the MU-MIMO transmission so as to maximize the data rate to the first device, then selects a second MCS and a second number of spatial stream(s) for a second device based on the selected total number of spatial streams. In another implementation, the wireless node toggles the first selection of the MCS and spatial stream(s) between the first and second devices for fairness purposes. In another implementation, a wireless selects the MCS and the spatial streams for the receiving nodes so as to maximize the aggregate data rate for the MU-MIMO transmission.
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公开(公告)号：US12273903B2
公开(公告)日：2025-04-08
申请号：US18382639
申请日：2023-10-23
Applicant: QUALCOMM Incorporated
Inventor： Nathaniel David Houghton , Xiaolong Huang , Naveen Gangadharan
IPC: H04W72/12 , H04W72/1268 , H04W72/23 , H04W72/52 , H04W84/12
Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for adjusting a packet duration for triggered uplink (UL) transmissions to an access point (AP) from one or more stations (STAs). In one aspect, the AP may estimate an amount of data that a STA has queued for UL transmission and select the packet duration based on the estimated amount of queued UL data. The AP may transmit a trigger frame that solicits UL data from the STA and indicates the selected packet duration. In response, the AP may receive an UL packet from the STA and determine an amount of UL data queued in the STA based on the UL packet. In some implementations, the AP may selectively adjust the packet duration for UL transmissions based on the UL packet, the determined amount of UL data queued in the STA, or both.
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公开(公告)号：US11917538B2
公开(公告)日：2024-02-27
申请号：US17204530
申请日：2021-03-17
Applicant: QUALCOMM Incorporated
Inventor： Nathaniel David Houghton , Xiaolong Huang , Ruiqing Ye
CPC classification number: H04W52/0206 , H04W28/0268 , H04W28/0278 , H04W40/244 , H04W80/02
Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for wireless communication. In some implementations, a wireless communication device obtains one or more indications that a wireless station (STA) will enter a power-save mode, selects, for each respective STA of a plurality of STAs, a duration associated with the respective STA entering the power-save mode, and adjusts one or more parameters of a multi-user channel access mechanism for transmitting uplink data associated with the selected duration. In some other implementations, a wireless communication device outputs one or more indications that the device will enter a power-save mode, outputs or obtains data at each of a plurality of first instances, enters the power-save mode at each of a plurality of second instances, and obtains a beacon indicating one or more parameters to be used for a multi-user channel access mechanism for transmitting uplink data.
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