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公开(公告)号：US11601922B1
公开(公告)日：2023-03-07
申请号：US16814550
申请日：2020-03-10
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Ken Kinwah Ho , Lei Wang , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
IPC: H04W72/04 , H04W72/121 , H04L5/00 , H04W72/0446 , H04W84/12
Abstract: A first wireless communication device receives a packet from a second wireless communication device, the packet having information indicating that the second wireless communication device is relinquishing control of a wireless communication medium. The first wireless communication device determines whether the packet was transmitted in a wireless network to which the first wireless communication device belongs, and determines whether a network allocation vector (NAV) timer of the first wireless communication device was most recently set in connection with a transmission from the wireless network to which the first wireless communication device belongs. When i) the packet was transmitted in the wireless network to which the first wireless communication device belongs, and ii) the NAV timer was most recently set in connection with a transmission from another wireless network to which the first wireless communication device does not belong, the NAV timer is not reset.
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公开(公告)号：US11503499B2
公开(公告)日：2022-11-15
申请号：US17119729
申请日：2020-12-11
Applicant: NXP USA, INC.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
IPC: H04W28/04 , H04L1/16 , H04L12/851 , H04L1/18 , H04L27/26 , H04W28/18 , H04B7/0452 , H04L47/2441 , H04W84/12 , H04L5/00
Abstract: A first communication device receives one or more aggregate medium access control (MAC) data units from respective one or more second communication devices. Respective aggregate MAC data units include multiple MAC data units from respective ones of the one or more second communication devices. The first communication device generates one or more acknowledgement information fields, including a first acknowledgement information field corresponding to a particular second communication device includes i) a length indication that indicates a length of an acknowledgement field, and ii) the acknowledgment field of the indicated length. The acknowledgement field includes respective acknowledgement information for at least some of the multiple MAC data units received from the particular second communication device. The first communication device generates an acknowledgement data unit to include the one or more one or more acknowledgement information fields, and transmits the acknowledgment data unit to the one or more second communication devices.
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公开(公告)号：US11032237B1
公开(公告)日：2021-06-08
申请号：US16558258
申请日：2019-09-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Hongyuan Zhang , Lei Wang , Jinjing Jiang , Hui-Ling Lou
Abstract: A communication device of a first wireless network determines that a first value of a first basic service set (BSS) color identifier is the same as a value of a second BSS color identifier corresponding to a neighboring second wireless network. In response, the communication device determines a second value of the first BSS color identifier. The communication device transmits one or more packets that each include i) an indication that the first BSS color identifier is changing, ii) the second value of the first BSS color identifier, and iii) a respective integer number of remaining beacon intervals corresponding to a start time when the second value of the first BSS color identifier will supersede the first value of the first BSS color identifier. Based on the start time, the communication device begins to use the second value of the first BSS color identifier with communications in the first wireless network.
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4.发明授权公开(公告)号：US10945245B2
公开(公告)日：2021-03-09
申请号：US16532051
申请日：2019-08-05
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Yakun Sun , Hongyuan Zhang , Lei Wang , Jinjing Jiang , Hui-Ling Lou
Abstract: Multiple trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. The multiple trigger frames include a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices, and one or more unicast trigger frames, each of the one or more unicast trigger frame including information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices. The broadcast trigger frame is transmitted, in a first frequency portion of a downlink OFDMA transmission, to the first subset of the second communication devices, and respective unicast trigger frames are transmitted, in respective second frequency portions of the downlink OFDMA transmission, to the second subset of the second communication devices.
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公开(公告)号：US10938454B2
公开(公告)日：2021-03-02
申请号：US16700613
申请日：2019-12-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Lei Wang , Hongyuan Zhang , Hui-Ling Lou , Yakun Sun , Jinjing Jiang
IPC: H04B7/0413 , H04L5/00 , H04W72/04 , H04L27/26 , H04W74/02 , H04B7/0452 , H04W84/12
Abstract: A first communication device transmits a trigger frame transmission to multiple second communication devices to prompt the multiple second communication devices to simultaneously transmit in multiple communication sub-channels. The first communication device receives one or more transmissions from one or more of the second communication devices in less than all of the communication sub-channels. The first communication device generates acknowledgment information for the one or more transmissions from the one or more of the second communication devices, and transmits the acknowledgment information via all of communication sub-channels.
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Patent Agency Ranking
公开(公告)号：US10856228B1
公开(公告)日：2020-12-01
申请号：US15969429
申请日：2018-05-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
Abstract: Embodiments described herein provide a method for transmitting a wake-up radio signal to low power devices in a wireless local area network. At a wireless access point, data for transmission to one or more lower power wireless devices is received. A wake-up radio packet is generated, including a wake-up data frame destined for the one or more lower power wireless devices. The wake-up data frame is configured with: a type field indicative of a type of the wake-up data frame, and a first identifier field indicative of information corresponding to the one or more lower power wireless devices. The wake-up radio packet is transmitted to the one or more lower power wireless devices to turn on wireless receivers at the one or more low power wireless devices prior to initiating data transmission with the one or more lower power wireless devices.
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公开(公告)号：US10834639B2
公开(公告)日：2020-11-10
申请号：US16179634
申请日：2018-11-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
Abstract: A first communication device configured is for communication with one or more second communication devices over a communication channel. The first communication device generates a first bandwidth indication of a first bandwidth of a first channel segment of the communication channel, and generates a second bandwidth indication, separate from the first bandwidth indication, of a second bandwidth of a second channel segment of the communication channel. The first channel segment does not overlap in frequency with the second channel segment. The first communication device generates one or more media access control protocol (MAC) data units to include the first bandwidth indication and the second bandwidth indication, and transmits the one or more MAC data units to the one or more second communication devices to indicate the first bandwidth of the first channel segment and the second bandwidth of the second channel segment to the one or more second communication devices.
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8.发明授权公开(公告)号：US10791516B1
公开(公告)日：2020-09-29
申请号：US16150162
申请日：2018-10-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
Abstract: The present disclosure describes methods and apparatuses for improved target wake time (TWT) operations in wireless networks. In some aspects, an access point transmits a trigger frame to stations of a TWT session during a TWT service period. Responsive to the trigger frame, the access point receives respective uplink frames transmitted by the stations. The access point then transmits a multi-block acknowledgment (M-BA) frame with a per association identifier traffic identifier (per AID TID) field configured to indicate whether one or more of the stations are permitted to enter a low-power state before an end of the TWT service period. By so doing, stations that are typically unable to interpret a more data field of the M-BA frame can determine based on the per AID TID if they are permitted to enter the low-power state and conserve power during a remainder of the TWT service period.
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公开(公告)号：US10790937B1
公开(公告)日：2020-09-29
申请号：US15876360
申请日：2018-01-22
Applicant: NXP USA, Inc.
Inventor： Yakun Sun , Liwen Chu , Hongyuan Zhang , Sudhir Srinivasa , Hui-Ling Lou
Abstract: A first communication device generates and transmits a first physical layer (PHY) data unit as part of a hybrid automatic repeat request (HARQ) session, the first PHY data unit having a first plurality of media access control (MAC) protocol data units (MPDUs) including a first MPDU. The first communication device determines that a second communication device did not acknowledge successfully receiving the first MPDU. The first communication device generates and transmits a second PHY data unit as part of the HARQ session, the second PHY data unit having a second plurality of MPDUs, the second plurality of MPDUs including the first MPDU.
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公开(公告)号：US10712422B2
公开(公告)日：2020-07-14
申请号：US16179477
申请日：2018-11-02
Applicant: NXP USA, Inc.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
Abstract: A first communication device transmits a first physical layer protocol data units (PPDU) that includes a first null data packet announcement (NDPA) frame as part of a first ranging measurement exchange. The first communication device transmits a first null data packet (NDP) as part of the first ranging measurement exchange, and records a transmit time of the first NDP. The first communication device determines whether a second NDP was received correctly from a second communication device as part of the first ranging measurement exchange. In response to determining that the second NDP was not received correctly, the first communication device commences a second ranging measurement exchange, including transmitting a second PPDU that includes a second NDPA frame as part of the second ranging measurement exchange.
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