公开(公告)号：US11372073B2

公开(公告)日：2022-06-28

申请号：US16910944

申请日：2020-06-24

Applicant: NXP USA, INC.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Hui-ling Lou

IPC: G01S3/46 ,  G01S5/00 ,  G01S5/14 ,  G01S5/12 ,  H04L1/00 ,  H04L69/22 ,  H04L69/323

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.

公开(公告)号：US20200319287A1

公开(公告)日：2020-10-08

申请号：US16910944

申请日：2020-06-24

Applicant: NXP USA, INC.

Inventor： LIWEN CHU ,  Hongyuan Zhang ,  Hui-ling Lou

IPC: G01S3/46 ,  G01S5/00 ,  G01S5/12 ,  G01S5/14 ,  H04L1/00 ,  H04L29/06 ,  H04L29/08

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.

公开(公告)号：US20210099908A1

公开(公告)日：2021-04-01

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

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.

公开(公告)号：US11558847B2

公开(公告)日：2023-01-17

申请号：US17100252

申请日：2020-11-20

Applicant: NXP USA, INC.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Christian R. Berger ,  Niranjan Grandhe ,  Sudhir Srinivasa ,  Hui-ling Lou

IPC: H04W64/00 ,  H04L5/00 ,  H04L1/00 ,  H04W8/00 ,  H04W24/10

Abstract: A first communication device prompts a plurality of second communication devices to transmit, during a contiguous time period reserved for a range measurement exchange, respective first null data packets (NDPs) at respective times. The first communication device receives first NDPs from at least some of the second communication devices during the contiguous time period, and transmits one or more second NDPs to the plurality of second communication devices. The first communication device uses reception of the first NDPs and transmission of the one or more second NDPs to determine respective ranges between the first communication device and respective second communication devices.

公开(公告)号：US20210075575A1

公开(公告)日：2021-03-11

申请号：US17100252

申请日：2020-11-20

Applicant: NXP USA, INC.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Christian R. Berger ,  Niranjan Grandhe ,  Sudhir Srinivasa ,  Hui-ling Lou

IPC: H04L5/00 ,  H04W64/00 ,  H04L1/00 ,  H04L27/26 ,  H04W8/00 ,  H04W24/10

Abstract: A first communication device prompts a plurality of second communication devices to transmit, during a contiguous time period reserved for a range measurement exchange, respective first null data packets (NDPs) at respective times. The first communication device receives first NDPs from at least some of the second communication devices during the contiguous time period, and transmits one or more second NDPs to the plurality of second communication devices. The first communication device uses reception of the first NDPs and transmission of the one or more second NDPs to determine respective ranges between the first communication device and respective second communication devices.

公开(公告)号：US20210076439A1

公开(公告)日：2021-03-11

申请号：US17099039

申请日：2020-11-16

Applicant: NXP USA, INC.

Inventor： Liwen Chu ,  Lei Wang ,  Jinjing Jiang ,  Hongyuan Zhang ,  Hui-ling Lou

IPC: H04W76/15 ,  H04L1/16

Abstract: A method for simultaneously communicating with multiple communication devices in a wireless local area network is described. Multiple uplink data units are received that are simultaneously transmitted by multiple second communication devices. The multiple uplink data units include a management data unit and a traffic data unit. An acknowledgment data unit is generated to acknowledge receipt of the multiple data units. The acknowledgment data unit includes (i) an indication that indicates that the acknowledgment data unit is intended for the multiple second communication devices, and (ii) respective acknowledgment information fields for the multiple second communication devices. The respective acknowledgment information fields include a first acknowledgment information field for the management data unit and a second acknowledgment information field for the traffic data unit. The acknowledgment data unit is caused to be transmitted from the first communication device to the multiple second communication devices.

公开(公告)号：US20200336934A1

公开(公告)日：2020-10-22

申请号：US16918136

申请日：2020-07-01

Applicant: NXP USA, INC.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Lei Wang ,  Yakun Sun ,  Jinjing Jiang ,  Hui-ling Lou

IPC: H04W28/02 ,  H04L12/833 ,  H04W72/12 ,  H04W72/04

Abstract: A method for transmitting a resource request for an uplink (UL) multi-user (MU) transmission is described. A High Throughput (HT) Control field that includes buffer information corresponding to media access control (MAC) protocol data units (MPDUs) that are queued for transmission by a first communication device is generated by the first communication device. The buffer information indicates a number of bytes for the MPDUs that are queued for transmission. A resource request MPDU that includes the HT Control field is generated by the first communication device. The resource request MPDU is transmitted by the first communication device to a second communication device via a wireless communication channel to request an allocation of radio resources for the UL MU transmission by the second communication device.