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公开(公告)号：US11233608B2
公开(公告)日：2022-01-25
申请号：US16855885
申请日：2020-04-22
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li Chen , Stephen Jay Shellhammer , Alfred Asterjadhi , Dung Ngoc Doan , Bin Tian , Youhan Kim
Abstract: This disclosure provides systems, methods and apparatuses for data retransmissions in a wireless network. In some implementations, a wireless communication device may transmit a first data unit to a receiving device, may receive a first hybrid automatic repeat request (HARQ) feedback frame indicating that a portion of the first data unit was not successfully decoded by the receiving device, may retransmit the indicated portion of the first data unit to the receiving device in response to the first HARQ feedback frame, and may transmit a second data unit, different than the first data unit, to the receiving device concurrently with the retransmission of the indicated portion of the first data unit.
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公开(公告)号：US20210273757A1
公开(公告)日：2021-09-02
申请号：US17180525
申请日：2021-02-19
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Bin Tian
Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for physical (PHY) layer control signaling. A first physical layer convergence protocol (PLCP) protocol data unit (PPDU) may precede a second PPDU. The first PPDU may be referred to as a PHY control PPDU and may include a physical layer control signaling field (CNT-SIG) that informs one or more stations (STAs) regarding a physical layer configuration they should use for the second PPDU. The PHY control PPDU may enable dynamic subchannel assignments for one or more identified STAs, legacy STAs, or sub-bandwidth operating devices. The techniques of this disclosure may enable sharing of a wide bandwidth wireless channel by different types of devices or different basic service sets (BSSs) assigned to different subchannels of the wireless channel.
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公开(公告)号：US20210167889A1
公开(公告)日：2021-06-03
申请号：US17103550
申请日：2020-11-24
Applicant: QUALCOMM Incorporated
Inventor： Lin Yang , Bin Tian , Dung Ngoc Doan , Sameer Vermani , Stephen Jay Shellhammer , Jialing Li Chen
Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN may include a plurality of link adaptation test portions that are generated using a corresponding plurality of transmission rate options. For example, the plurality of link adaptation test portions may be modulated using different modulation and coding scheme (MCS) options. Thus, a single test packet may be used to evaluate different transmission rate options. The second WLAN device may provide feedback information regarding the link adaptation test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.
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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
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.
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55.发明申请公开(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.
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Patent Agency Ranking
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.
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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
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.
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58.发明申请公开(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
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.
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59.发明申请公开(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
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.
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公开(公告)号：US10856222B2
公开(公告)日：2020-12-01
申请号：US16111047
申请日：2018-08-23
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Bin Tian , Lochan Verma
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.
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