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：US20240137154A1

公开(公告)日：2024-04-25

申请号：US18400461

申请日：2023-12-29

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

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

IPC分类号： H04L1/00 ,  H04L27/34 ,  H04W84/12

CPC分类号： H04L1/0063 ,  H04L1/0042 ,  H04L27/3483 ,  H04W84/12

摘要： A station (STA) configured for operation in a WLAN may perform bit scrambling on input bits to generate scrambled input bits and may perform probabilistic constellation shaping using a shaping encoder on the scrambled input bits. The shaping encoder may encode a segment of the scrambled input bits for a modulation order and generate a shaped bit stream. In these embodiments, the STA may generate a QAM symbol stream with a QAM modulator. The QAM symbol stream may be generated at least from the shaped bit stream and from parity bits using the modulation order. The STA may generate the parity bits from the shaped bit streams with a forward-error correction (FEC) encoder and may transmit the QAM symbol stream within a physical layer protocol data unit (PPDU). To address a potential byte boundary shift caused a decoding error at a receiving station, the STA may modify performance of the bit scrambling when probabilistic constellation shaping is performed.

公开(公告)号：US20240204907A1

公开(公告)日：2024-06-20

申请号：US18591689

申请日：2024-02-29

申请人： Hao Song ,  Qinghua Li ,  Po-Kai Huang ,  Shlomi Vituri ,  Assaf Gurevitz

发明人： Hao Song ,  Qinghua Li ,  Po-Kai Huang ,  Shlomi Vituri ,  Assaf Gurevitz

IPC分类号： H04L1/00

CPC分类号： H04L1/0003

摘要： For example, an AP may be configured to set RU allocation information for a user STA in an RU allocation subfield of a user field for the user STA. For example, the RU allocation information for the user STA may indicate an RU allocation for a TB UL transmission from the user STA. For example, the AP may be configured to set a 7-bit UL MCS subfield, for example, after the RU allocation subfield, to indicate a first MCS and a second MCS for the user STA. For example, the first MCS may be assigned to a first UL resource of the RU allocation for the user STA, and the second MCS may be assigned to a second UL resource of the RU allocation for the user STA. For example, the AP may be configured to transmit a trigger frame including the user field for the user STA.

公开(公告)号：US20240048265A1

公开(公告)日：2024-02-08

申请号：US18458781

申请日：2023-08-30

申请人： Hao Song ,  Qinghua Li ,  Juan Fang ,  Shlomi Vituri ,  Robert Stacey

发明人： Hao Song ,  Qinghua Li ,  Juan Fang ,  Shlomi Vituri ,  Robert Stacey

IPC分类号： H04L1/00

CPC分类号： H04L1/0005 ,  H04L1/003

摘要： For example, a transmitter may be configured to assign a stream of encoded data bits of a Physical layer (PHY) Protocol Data Unit (PPDU) to one or more sequences of encoded bit blocks for one or more spatial streams based on an Unequal Modulation and Coding Scheme (MCS) (UEM) assignment including an assignment of a plurality of MCSs to a plurality of frequency sub-blocks for the one or more spatial streams. For example, the transmitter may be configured to assign the one or more sequences of encoded bit blocks to the plurality of frequency sub-blocks for the one or more spatial streams.

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：US20240022347A1

公开(公告)日：2024-01-18

申请号：US18477606

申请日：2023-09-29

申请人： Hao Song ,  Qinghua Li ,  Shlomi Vituri ,  Thomas J. Kenney ,  Robert Stacey

发明人： Hao Song ,  Qinghua Li ,  Shlomi Vituri ,  Thomas J. Kenney ,  Robert Stacey

IPC分类号： H04L1/00 ,  H04B7/0452

CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04B7/0452

摘要： For example, an Access Point (AP) may be configured to set a user specific field in a Signal (SIG) field. For example, the user specific field may be configured for a user of a plurality of users in a Multi-User (MU) Multiple-Input-Multiple-Output (MIMO) (MU-MIMO) allocation. For example, the user specific field for the user may include an Unequal Modulation and Coding Scheme (MCS) (UEM) information subfield configured to indicate an assignment of a plurality of MCSs for the user. For example, the user specific field for the user may include a spatial configuration subfield configured to indicate a number of spatial streams for the user and a total number of spatial streams in the MU-MIMO allocation. For example, the AP may be configured to transmit a Physical layer (PHY) Protocol Data Unit (PPDU) including the SIG field.

公开(公告)号：US20230412333A1

公开(公告)日：2023-12-21

申请号：US18352100

申请日：2023-07-13

申请人： Hao Song ,  Po-Kai Huang ,  Qinghua Li ,  Robert Stacey ,  Shlomi Vituri

发明人： Hao Song ,  Po-Kai Huang ,  Qinghua Li ,  Robert Stacey ,  Shlomi Vituri

IPC分类号： H04L5/00 ,  H04W72/21 ,  H04L1/00

CPC分类号： H04L5/0044 ,  H04W72/21 ,  H04L1/0003

摘要： For example, an Access Point (AP) may be configured to set Resource Unit (RU) allocation information for a user station (STA) in a user information (info) field for the user STA, the RU allocation information for the user STA configured to indicate an RU allocation for a Trigger-Based (TB) Uplink (UL) transmission from the user STA; to determine Unequal Modulation and Coding Scheme (MCS) (UEM) information for the user STA, the UEM information for the user STA configured to indicate an assignment of a plurality of MCSs to a plurality of UL resources in the RU allocation for the user STA, respectively, wherein the plurality of UL resources includes at least one of a plurality of frequency sub-channels or a plurality of spatial streams; and to transmit a trigger frame including the user info field for the user STA, and the UEM information for the user STA.

公开(公告)号：US20230403125A1

公开(公告)日：2023-12-14

申请号：US18344745

申请日：2023-06-29

申请人： Hao Song ,  Qinghua Li ,  Robert Stacey ,  Assaf Gurevitz ,  Thomas J. Kenney

发明人： Hao Song ,  Qinghua Li ,  Robert Stacey ,  Assaf Gurevitz ,  Thomas J. Kenney

IPC分类号： H04L5/00

CPC分类号： H04L5/0094 ,  H04L5/0044 ,  H04L5/0037

摘要： For example, an Access Point (AP) may be configured to set Resource Unit (RU) allocation information in a Signal (SIG) field, the RU allocation information configured to indicate an RU allocation for a user; to set Unequal Modulation and Coding Scheme (MCS) (UEM) information for the user in the SIG field, the UEM information for the user configured to indicate an assignment of a plurality of MCSs to a plurality of frequency sub-channels in the RU allocation for the user, respectively; and to transmit a Downlink (DL) Physical layer (PHY) Protocol Data Unit (PPDU) including the SIG field and a data field for the user, wherein the data field for the user is configured according to the assignment of the plurality of MCSs to the plurality of frequency sub-channels in the RU allocation for the user.

公开(公告)号：US20240283561A1

公开(公告)日：2024-08-22

申请号：US18650378

申请日：2024-04-30

申请人： Hao Song ,  Yoav Eisenberg ,  Assaf Gurevitz ,  Thomas J. Kenney ,  Qinghua Li

发明人： Hao Song ,  Yoav Eisenberg ,  Assaf Gurevitz ,  Thomas J. Kenney ,  Qinghua Li

IPC分类号： H04L1/00 ,  H04W28/06

CPC分类号： H04L1/0003 ,  H04W28/065

摘要： This disclosure describes systems, methods, and devices for signaling multiple modulation and coding schemes for a single user. A device may generate a common field of an ultra-high reliability signal (UHR-SIG) content channel field, the common field including signaling for station devices; generate a number of spatial streams (NSS) subfield of a user specific field of the UHR-SIG content channel field, the user specific field addressed to a first station device of the multiple station devices; generate a 6-bit modulation and coding scheme (MCS) subfield of the user specific field, wherein the 6-bit MCS subfield maps, based on a number of spatial streams signaled by the NSS subfield, to one or more MCSs assigned to the first station device; generate a frame including the UHR-SIG content channel field, wherein a user field of the user specific field includes at least 22 bits including the MCS subfield; and send the frame.