公开(公告)号：US20230148403A1

公开(公告)日：2023-05-11

申请号：US18071811

申请日：2022-11-30

申请人： Juan Fang ,  Qinghua Li ,  Po-Kai Huang ,  Thomas J. Kenney ,  Robert J. Stacey

发明人： Juan Fang ,  Qinghua Li ,  Po-Kai Huang ,  Thomas J. Kenney ,  Robert J. Stacey

IPC分类号： H04L5/00 ,  H04L25/02

CPC分类号： H04L5/0048 ,  H04L5/0064 ,  H04L25/0202 ,  H04L5/006

摘要： A physical layer protocol data unit (PPDU) may include legacy preamble fields followed by a universal signal field (U-SIG). For an extended range (ER) transmission, the U-SIG is encoded to indicate via a bit whether the PPDU is an ER PPDU or a non-ER PPDU. When the U-SIG is encoded to indicate that the PPDU is an ER PPDU, the PPDU may include ER preamble fields following the U-SIG and an ER data field following the ER preamble fields. The ER preamble fields may comprise pre-ER modulated fields followed by ER modulated fields. The pre-ER modulate fields may comprise an ER short training field (ER-STF) followed by an ER long training field (ER-LTF) followed by an ER signal field (ER-SIG). The ER modulated fields may comprise at least the ER data field.

公开(公告)号：US20240129174A1

公开(公告)日：2024-04-18

申请号：US18397940

申请日：2023-12-27

申请人： Qinghua Li ,  Hao Song ,  Juan Fang ,  Shlomi Vituri ,  Assaf Gurevitz ,  Danny Alexander ,  Robert J. Stacey

发明人： Qinghua Li ,  Hao Song ,  Juan Fang ,  Shlomi Vituri ,  Assaf Gurevitz ,  Danny Alexander ,  Robert J. Stacey

IPC分类号： H04L27/34 ,  H04L27/36

CPC分类号： H04L27/3405 ,  H04L27/36 ,  H04W84/12

摘要： A station (STA) configured for operation in a wireless local area network (WLAN) may implement an unequal Modulation and Coding Scheme (MCS) for Probabilistic Constellation Shaping using first and second shaping encoders. The first shaping encoder may encode a first segment of input bits for a first modulation order and generate a first shaped bit stream and the second shaping encoder may encode a second segment of input bits for a second modulation order to generate a second shaped bit stream. A first QAM symbol stream may be generated at least from the first shaped bit stream and from parity bits using the first modulation order and a second QAM symbol stream may be generated at least from the second shaped bit stream and from parity bits using the second modulation order. The STA may generate the parity bits from the first and second shaped bit streams with one or more LDPC encoders and may transmit the first and second QAM symbol streams within a PPDU.

公开(公告)号：US20240089030A1

公开(公告)日：2024-03-14

申请号：US18382346

申请日：2023-10-20

申请人： Qinghua Li ,  Juan Fang ,  Hao Song ,  Thomas J. Kenney ,  Robert J. Stacey

发明人： Qinghua Li ,  Juan Fang ,  Hao Song ,  Thomas J. Kenney ,  Robert J. Stacey

IPC分类号： H04L1/00 ,  H03M13/25

CPC分类号： H04L1/0063 ,  H03M13/255

摘要： An apparatus and method of signaling coding type is disclosed. The coding types include binary convolutional coding (BCC), legacy lifted Low-Density Parity Check (LDPC) code, and lifted LDPC code having a length that is a multiple of the maximum legacy LDPC code. The number of bits used to indicate the coding type in a User Info field depends on whether multiple lifted LDPC codes are available for encoding, whether the lifted LDPC code is an optional coding type, or a payload size. The frame containing the User Info field is transmitted to another STA and the response contains a payload encoded using the indicated coding type.

公开(公告)号：US20230397249A1

公开(公告)日：2023-12-07

申请号：US18235524

申请日：2023-08-18

申请人： Juan Fang ,  Qinghua Li ,  Robert J. Stacey ,  Laurent Cariou ,  Hao Song

发明人： Juan Fang ,  Qinghua Li ,  Robert J. Stacey ,  Laurent Cariou ,  Hao Song

IPC分类号： H04W74/08

CPC分类号： H04W74/0808 ,  H04W84/12

摘要： An access point station (AP) configured for ultra-high reliability (UHR) communication in a wireless local area network (WLAN) may receive low-latency (i.e., time-sensitive) traffic during a transmission opportunity (TXOP) by transmission of an initial frame encoded to indicate whether or not preemption for low-latency (LL) traffic is enabled during the TXOP. When preemption for LL traffic is enabled during the TXOP, the AP may encode downlink (DL) physical-layer protocol data units (PPDUs) for transmission within the TXOP. The DL PPDUs may be transmitted with an extended short interframe spacing (xIFS) therebetween. Each of the DL PPDUs may indicate whether the xIFS that follows a DL PPDU is enabled for preemption. When a signal comprising at least a legacy short-training field (L-STF) is detected within one of the xIFSs that is enabled for preemption, the AP may suspend a subsequent transmission of at least the next DL PPDU and may attempt to decode a frame that comprises the L-STF to determine if the frame is a preemption request frame. The AP may trigger a station (STA) to transmit LL traffic to the AP when the frame is determined to be a preemption request frame.

公开(公告)号：US20230300696A1

公开(公告)日：2023-09-21

申请号：US18203257

申请日：2023-05-30

申请人： Juan Fang ,  Po-Kai Huang ,  Qinghua Li ,  Robert J. Stacey

发明人： Juan Fang ,  Po-Kai Huang ,  Qinghua Li ,  Robert J. Stacey

IPC分类号： H04W36/06 ,  H04W74/08 ,  H04W72/1273 ,  H04W72/0453 ,  H04W72/1268

CPC分类号： H04W36/06 ,  H04W74/0816 ,  H04W72/1273 ,  H04W72/0453 ,  H04W72/1268

摘要： An access-point station (AP) configured for communicating multi-user (MU) physical layer protocol data units (PPDUs) (MU-PPDUs) with plurality of non-AP stations (STAs) using dynamic channel switching may acquire a transmission opportunity (TXOP) on a channel comprising a primary channel and one or more non-primary channels. The AP may encode a channel switching indication frame that may request that at least some of the STAs temporarily switch from operating on the primary channel to operating on one of the non-primary channels. The AP may decode a response frame from each of the STAs that are indicated to switch. Each response frame may be received on the non-primary channel that an indicated STA is requested to switch to. For a downlink (DL) transmission, the AP may encode a DL MU-PPDU comprised of a plurality of PPDUs of different physical layer (PHY) types including at least a first PPDU for transmission on the primary channel to a first STA that had not been instructed to switch to a non-primary channel, and at least a second PPDU for transmission on one of the non-primary channels to a second STA that had been instructed to switch to one of the non-primary channels.

公开(公告)号：US20230209602A1

公开(公告)日：2023-06-29

申请号：US18117236

申请日：2023-03-03

申请人： Gil Meyuhas ,  Juan Fang ,  Qinghua Li ,  Po- Kai Huang ,  Robert J. Stacey ,  Linlin Hou ,  Rony Ross

发明人： Gil Meyuhas ,  Juan Fang ,  Qinghua Li ,  Po- Kai Huang ,  Robert J. Stacey ,  Linlin Hou ,  Rony Ross

IPC分类号： H04W74/08 ,  H04L5/00

CPC分类号： H04W74/0816 ,  H04L5/0053

摘要： Methods, apparatuses, and computer readable media for clear-to-send duration field adjustments are disclosed. Apparatuses of a station (STA) are disclosed, where the apparatuses comprise processing circuitry configured to: decode a physical layer protocol data unit (PPDU), the PPDU including a request to send (RTS) frame, the RTS frame comprising an address of the STA and a first duration field, the first duration field indicating a first duration. The processing circuitry is further configured to: setting a second duration to a duration that ends before a transmission and encoding for transmission a clear-to-send (CTS) frame, the CTS frame comprising a second duration field, the second duration field indicating the reduced second duration.

公开(公告)号：US20240048271A1

公开(公告)日：2024-02-08

申请号：US18382459

申请日：2023-10-20

申请人： Juan Fang ,  Qinghua Li ,  Robert J. Stacey

发明人： Juan Fang ,  Qinghua Li ,  Robert J. Stacey

IPC分类号： H04L1/00 ,  H04L5/00

CPC分类号： H04L1/0057 ,  H04L5/0007 ,  H04L1/0068

摘要： An apparatus and method of encoding Low-Density Parity Check (LDPC) Physical Layer Convergence Protocol (PLCP) packet protocol data units (PPDU) is disclosed. For LDPC codeword of lengths 3888 and/or 7776, the number and length of codewords to use may depend on the number of available bits. In this case, if the number of available bits is larger than 1944 and less than 2596, two codewords of length 1944 or a single codeword of length 3888 to encode the PPDU is used to encode the PPDU. For larger numbers of available bits, one or more codewords of length 3888 or 7776 is used to encode the PPDU. Shortening and/or puncturing, when used, is also based on the number of available bits.

公开(公告)号：US20200007283A1

公开(公告)日：2020-01-02

申请号：US16566478

申请日：2019-09-10

申请人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Po-Kai Huang ,  Laurent Cariou ,  Robert J. Stacey ,  Thomas J. Kenney ,  Ziv Avital

发明人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Po-Kai Huang ,  Laurent Cariou ,  Robert J. Stacey ,  Thomas J. Kenney ,  Ziv Avital

IPC分类号： H04L5/00 ,  H04B17/327 ,  H04W74/08 ,  H04B7/024 ,  H04B7/06

摘要： Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. An AP may be configurable to operate as a master AP of a multi-AP group comprising the master AP and one or more satellite APs. The master AP may select, from the multi-AP group, a set of APs that is to communicate with a STA in accordance with joint processing. The master AP may allocate one or more spatial streams to each of the APs of the set of APs for a joint transmission of a null data packet (NDP) to the STA for channel sounding. The master AP may transmit an NDP announcement (NDPA) that indicates that the APs of the set of APs are to perform the joint transmission of the NDP.

公开(公告)号：US20190238259A1

公开(公告)日：2019-08-01

申请号：US16382531

申请日：2019-04-12

申请人： Po-Kai Huang ,  Feng Jiang ,  Xiagang Chen ,  Qinghua Li ,  Robert J. Stacey ,  Laurent Cariou

发明人： Po-Kai Huang ,  Feng Jiang ,  Xiagang Chen ,  Qinghua Li ,  Robert J. Stacey ,  Laurent Cariou

IPC分类号： H04L1/00 ,  H04W40/24 ,  H04W72/04 ,  H04W80/02

CPC分类号： H04L1/0005 ,  H04W40/244 ,  H04W72/0446 ,  H04W80/02 ,  H04W84/12

摘要： Methods, apparatuses, and computer readable media for high efficiency (HE) beacon and HE formats in a wireless network are disclosed. An apparatus of a high efficiency (HE) access point (AP), where the apparatus comprises processing circuitry configured select a tuple from the basic HE-MCS set of tuples, if a basic HE modulation and control scheme (MCS)(HE-MCS) and a number of spatial streams (NSS) set of tuples is not empty, and otherwise select the tuple from a mandatory HE-MCS and NSS set of tuples. The processing circuitry may be further configured to encode a beacon frame in a HE single user (SU) physical layer (PHY) protocol data unit (PPDU), in accordance with the selected tuple, and configure the HE AP to transmit the HE SU PPDU. Null data packets formats, methods, computer readable media, and apparatuses are disclosed for multiple 20 MHz operations.

公开(公告)号：US20190182674A1

公开(公告)日：2019-06-13

申请号：US16215182

申请日：2018-12-10

申请人： Qinghua Li ,  Feng Jiang ,  Jonathan Segev ,  Chen Xiaogang ,  Robert J. Stacey

发明人： Qinghua Li ,  Feng Jiang ,  Jonathan Segev ,  Chen Xiaogang ,  Robert J. Stacey

IPC分类号： H04W12/12 ,  H04L27/26 ,  H04W12/06 ,  H04W12/04 ,  H04L9/08 ,  G01S13/76

摘要： Methods, apparatuses, and computer readable media for location measurement reporting in a wireless network are disclosed. An apparatus of a responder station (RSTA) is disclosed, the apparatus comprising processing circuitry configured to decode a null data packet (NDP) announce (NDPA) frame from an initiator station (ISTA), the NDPA frame comprising an indication of a temporary key and an identification of the RSTA. The processing circuitry further configured to decode a NDP from the ISTA, the NDP comprising long training fields (LTFs), the NDP received on a channel. The processing circuitry further configured to determine whether the NDP from the ISTA is consistent with the NDP being generated using a temporary key shared between the ISTA and RSTA based on a comparison of the channel estimates. The processing circuitry may be further configured to determine for authentication whether the indication of the temporary key was generated based on the temporary key.