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：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：US20210051722A1

公开(公告)日：2021-02-18

申请号：US17084755

申请日：2020-10-30

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

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

IPC分类号： H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04L1/00

摘要： Methods, apparatuses, and computer readable media for a common preamble for wireless local-area networks (WLANs). An apparatus of an access point (AP) or station (STA) comprising processing circuitry configured to encode an AP trigger frame that includes a resource allocation for other APs to transmit trigger frames to perform an uplink or downlink multi-user transmission with stations (STAs). The resource allocation includes information so that the transmissions are coordinated at the physical level to lessen interference among the APs and the stations. The processing is configured to encode a trigger frame for multi-AP request-to-send (RTS), the multi-AP trigger frame comprising for each of a plurality of APs, the trigger frame indicating that each of a plurality of APs are to transmit a physical (PHY) protocol data unit (PPDU) comprising a request-to-send (RTS) or multi-user (MU) RTS (MU-RTS).

公开(公告)号：US20200045555A1

公开(公告)日：2020-02-06

申请号：US16543157

申请日：2019-08-16

申请人： Po-Kai Huang ,  Daniel Leiderman ,  Arik Klein ,  Laurent Cariou ,  Daniel F. Bravo ,  Feng Jiang ,  Qinghua Li ,  Xiaogang Chen ,  Robert J. Stacey

发明人： Po-Kai Huang ,  Daniel Leiderman ,  Arik Klein ,  Laurent Cariou ,  Daniel F. Bravo ,  Feng Jiang ,  Qinghua Li ,  Xiaogang Chen ,  Robert J. Stacey

IPC分类号： H04W16/10 ,  H04W4/06 ,  H04W72/04 ,  H04W72/12 ,  H04W84/20 ,  H04L25/02 ,  H04W74/08 ,  H04W88/08

摘要： Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. The AP may be configurable to operate as a master AP of a multi-AP group. The master AP may establish the multi-AP group by: transmitting one or more messages to advertise the multi-AP group; and exchanging signaling with one or more of the other APs of the multi-AP group. The signaling may include at least one message related to one of the other APs joining the multi-AP group. The master AP may establish the multi-AP group to enable usage of AP Trigger Frames (AP TFs) for coordination of resources to be used for downlink transmissions of the APs of the multi-AP group.

公开(公告)号：US20180007179A1

公开(公告)日：2018-01-04

申请号：US15386916

申请日：2016-12-21

申请人： Xiaogang Chen ,  Laurent Cariou ,  Qinghua Li ,  Robert J. Stacey

发明人： Xiaogang Chen ,  Laurent Cariou ,  Qinghua Li ,  Robert J. Stacey

IPC分类号： H04L29/08 ,  H04W72/04 ,  H04L29/06 ,  H04W88/08 ,  H04W84/12

CPC分类号： H04L69/324 ,  H04L69/22 ,  H04L69/323 ,  H04W74/006 ,  H04W74/06 ,  H04W84/12 ,  H04W88/08

摘要： Embodiments of an access point (AP) may comprise memory and processing circuitry coupled to the memory, and transceiver circuitry coupled to the processing circuitry. The processing circuitry of the AP may be configured to generate a trigger frame to allocate a center 26 tone RU for an HE-trigger-based PPDU, the center 26 tone RU having an adjacent upper 20 MHz subchannel and an adjacent lower 20 MHz subchannel. In an embodiment, the center 26 tone RU is for a station (STA) and wherein the trigger frame indicates to the STA to transmit a pre-HE-STF preamble on one of the adjacent upper 20 MHz subchannel, the adjacent lower 20 MHz subchannel, or both the adjacent upper and lower 20 MHz subchannels, and configure the wireless device to transmit the trigger frame to the station.

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：US20170279568A1

公开(公告)日：2017-09-28

申请号：US15200470

申请日：2016-07-01

申请人： Po-Kai Huang ,  Yaron Alpert ,  Laurent Cariou ,  Robert J. Stacey ,  Daniel F. Bravo ,  Qinghua Li

发明人： Po-Kai Huang ,  Yaron Alpert ,  Laurent Cariou ,  Robert J. Stacey ,  Daniel F. Bravo ,  Qinghua Li

IPC分类号： H04L5/00 ,  H04W72/04

CPC分类号： H04L5/005 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/002 ,  H04W74/0816

摘要： Methods and devices are described in which the MU-RTS (multi-user request-to-send) trigger frame is compressed by having a single field trigger a group of users instead of an individual user. This technique also enables the indication of a set of transmission format parameters to the same group of users. In one embodiment, one Per-User Info field of the MU-RTS frame is used to indicate that the CTS (clear-to-send) response is to be transmitted by multiple stations instead of a having a Per-User Info field for each station.

公开(公告)号：US20170006541A1

公开(公告)日：2017-01-05

申请号：US14973528

申请日：2015-12-17

申请人： Po-Kai Huang ,  Robert J. Stacey ,  Chittabrata Ghosh ,  Laurent Cariou ,  Qinghua Li

发明人： Po-Kai Huang ,  Robert J. Stacey ,  Chittabrata Ghosh ,  Laurent Cariou ,  Qinghua Li

IPC分类号： H04W52/02 ,  H04W48/20 ,  H04W72/12

CPC分类号： H04W52/0209 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0055 ,  H04W48/20 ,  H04W74/006 ,  H04W74/02 ,  Y02B80/50 ,  Y02D70/00 ,  Y02D70/1226 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/26 ,  Y02D70/442

摘要： Methods, computer readable media, and wireless apparatuses are disclosed. The apparatuses including processing circuitry configured to: associate with a master station, decode a frame, where the frame comprises a first duration and a transmitter address and determine that the frame is an intra basic service set (Intra-BSS), an inter (Inter-BSS), or an unclassified frame, where the unclassified frame is the Intra-BSS frame or the Inter-BSS frame. The processing circuitry may be further configured to set an Intra-BSS network allocation vector (NAV) to the first duration if the first duration is longer than a current duration of the Intra-BSS NAV and the frame is determined to be the intra-BSS frame and set the second NAV to the first duration if the first duration is longer than a current duration of the second NAV and the frame is determined to be the inter-BSS frame or the unclassified frame.

摘要翻译： 公开了方法，计算机可读介质和无线设备。 所述设备包括处理电路，其被配置为：与主站相关联，解码帧，其中所述帧包括第一持续时间和发送器地址，并且确定所述帧是内部基本服务集（Intra-BSS），帧间（Inter -BSS）或未分类的帧，其中未分类的帧是帧内BSS帧或BSS间帧。 处理电路还可以被配置为如果第一持续时间长于BSS内NAV的当前持续时间并将帧确定为帧内BSS，则将BSS内网络分配向量（NAV）设置为第一持续时间 并且如果第一持续时间长于第二NAV的当前持续时间并且将帧确定为BSS间帧或未分类帧，则将第二NAV设置为第一持续时间。