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    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling
    21.
    发明申请
    Wireless Communication via Combined Channel Training and Physical Layer Header Signaling 审中-公开
    通过组合信道训练和物理层报头信令进行无线通信

    公开(公告)号：US20160066324A1

    公开(公告)日：2016-03-03

    申请号：US14583253

    申请日：2014-12-26

    Applicant: Qinghua Li ,  Xiaogang Chen ,  Huaning Niu ,  Yuan Zhu

    Inventor： Qinghua Li ,  Xiaogang Chen ,  Huaning Niu ,  Yuan Zhu

    IPC: H04W72/04 ,  H04W72/00 ,  H04B7/06 ,  H04B7/04 ,  H04L29/06 ,  H04L5/00

    CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L25/0232 ,  H04L69/22

    Abstract: Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11 ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.

    Abstract translation: 本文的实施例涉及使用组合信道训练和物理层报头（SIG）信令的无线通信。 符合802.11 ax或高效WLAN（HEW）标准的设备可能会生成并传输包含这些组合信息的数据包。 组合的信息可以经由OFDM信号被波束形成到接收机设备，OFDM信号可以被接收机设备解码以获得包括在信号中的后续数据。 例如，可以检测与信号中的信道训练子载波相关联的初始训练符号，并用于执行信道的粗略估计。 之后可以使用使用信道训练符号从相邻数据子载波检测的数据符号来粗略估计。 以这种方式，数据副载波也可以用于确定与信道训练子载波一起的信道响应。 信道训练信息可以用单个符号中的诸如用户特定信息的数据发送。

    PDSCH RESOURCE ELEMENT MAPPING FOR THREE-CELL JOINT TRANSMISSION
    22.
    发明申请
    PDSCH RESOURCE ELEMENT MAPPING FOR THREE-CELL JOINT TRANSMISSION 有权
    用于三节点传输的PDSCH资源元素映射

    公开(公告)号：US20140177541A1

    公开(公告)日：2014-06-26

    申请号：US13725369

    申请日：2012-12-21

    Applicant: QINGHUA LI ,  Yuan Zhu ,  Xiaogang Chen

    Inventor： QINGHUA LI ,  Yuan Zhu ,  Xiaogang Chen

    IPC: H04W72/08

    CPC classification number: H04L5/0035 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/362

    Abstract: A PDSCH resource element mapping method is used for joint transmissions. The method solves a problem of colliding resource elements in joint transmissions, due to interference caused when PDSCH resource elements are transmitted in the resource block of one cell and cell-specific reference signals (CRSs) are transmitted in the same location of the resource block of an adjacent cell. The method is particularly beneficial for coordinated multipoint (CoMP) transmissions. The PDSCH resource element mapping method employs one of three schemes for transmitting the collided resource elements, with minimal interference. In the first scheme, one PDSCH symbol is transmitted over three consecutive CRS-collided PDSCH resource elements. In the second scheme, two PDSCH symbols are transmitted over three consecutive CRS-collided PDSCH resource elements. In a third scheme, CRS-collided resource elements are transmitted using a lower modulation order than is specified by the modulation and coding scheme.

    Abstract translation: 用于联合传输的PDSCH资源元素映射方法。 该方法解决了由于在一个小区的资源块中发送PDSCH资源元素时引起的干扰，在联合传输中冲突资源元素的问题，并且在资源块的相同位置发送小区特定参考信号（CRS） 相邻单元格。 该方法对协同多点（CoMP）传输特别有利。 PDSCH资源元素映射方法采用三种方案之一，以最小的干扰来发送冲突的资源元素。 在第一方案中，通过三个连续的CRS冲突的PDSCH资源元素发送一个PDSCH符号。 在第二方案中，通过三个连续的CRS冲突的PDSCH资源元素发送两个PDSCH符号。 在第三方案中，CRS冲突的资源元素使用比由调制和编码方案指定的更低的调制阶数来发送。

    ULTRA-LOW LATENCY (ULL) COMMUNICATIONS USING A DEDICATED RESOURCE UNIT (RU)
    26.
    发明申请
    ULTRA-LOW LATENCY (ULL) COMMUNICATIONS USING A DEDICATED RESOURCE UNIT (RU) 有权

    公开(公告)号：US20230028874A1

    公开(公告)日：2023-01-26

    申请号：US17896365

    申请日：2022-08-26

    Applicant: Juan Fang ,  Laurent Cariou ,  Minyoung Park ,  Dave A. Cavalcanti ,  Xiaogang Chen ,  Dmitry Akhmetov

    Inventor： Juan Fang ,  Laurent Cariou ,  Minyoung Park ,  Dave A. Cavalcanti ,  Xiaogang Chen ,  Dmitry Akhmetov

    IPC: H04L5/00 ,  H04W72/04

    Abstract: Embodiments disclosed herein are directed to communicating time-critical ultra-low latency (ULL) data using one or more dedicated resource units (RUs). A station (STA) decodes a trigger frame received from an access point station (AP) encoded to indicate resource units (RUs) of an UL PPDU for an uplink multi-user orthogonal frequency division multiple access (UL MU OFDMA) data transmission by a first and a second station STA. The trigger frame may also be encoded to indicate configuration information for a dedicated RU for time-critical ultra-low latency (ULL) UL data. The dedicated RU may be one RU of one or more RUs of the UL PPDU that are reserved for time-critical communications. The STA may encode time-critical ULL UL data for transmission to the AP on the dedicated RU during the uplink MU OFDMA data transmission by the first and second STAs. The time-critical ULL UL data may start at any time during transmission of the UL PPDU. Medium access control layer (MAC) padding may be included in a MAC payload until the time-critical ULL UL data is available at the MAC layer of the STA.

    OFDMA TRIGGER BASED PEER TO PEER OPERATIONS WITH DUAL-STAGE TRIGGERING
    28.
    发明申请
    OFDMA TRIGGER BASED PEER TO PEER OPERATIONS WITH DUAL-STAGE TRIGGERING 有权

    公开(公告)号：US20220182981A1

    公开(公告)日：2022-06-09

    申请号：US17555115

    申请日：2021-12-17

    Applicant: Jonathan Segev ,  Qinghua LI ,  Xiaogang Chen ,  Ofer HAREUVENI ,  David Birnbaum

    Inventor： Jonathan Segev ,  Qinghua LI ,  Xiaogang Chen ,  Ofer HAREUVENI ,  David Birnbaum

    IPC: H04W72/02 ,  H04W72/04 ,  H04L25/02

    Abstract: A station (STA) may operate as a first peer-to-peer (P2P) client (P2P1) for P2P operations with dual-stage triggering. The STA may decode a primary frame trigger frame (TF) from an access point (AP) operating as a coordinator. The primary TF may allocate resources in an initial portion of a time-duration allocation to the P2P1 for the P2P operations with one or more other peer stations, including a second P2P client (P2P2) and a third P2P client (P2P3). The primary TF may further allocate resources in a subsequent portion of the time-duration allocation to the P2P2 for the P2P operations. The STA may also encode a first secondary TF for transmission within the initial portion of the time-duration allocation. The first secondary TF may allocate specific resource units (RUs) to the one or more other peer stations. The STA may also decode a TB physical layer protocol data unit (TB PPDU) encoded in accordance with a multi-user orthogonal frequency division multiple access (MU OFDMA) frame format. The TB PPDU may be received concurrently within the initial portion of the time-duration allocation from the one or more other peer stations in accordance with an uplink OFDMA technique.

    EXTREME HIGH THROUGHPUT TRAINING FIELDS FOR TRIGGER BASED NULL DATA PACKET FEEDBACK
    29.
    发明申请
    EXTREME HIGH THROUGHPUT TRAINING FIELDS FOR TRIGGER BASED NULL DATA PACKET FEEDBACK 有权

    公开(公告)号：US20210399923A1

    公开(公告)日：2021-12-23

    申请号：US17465769

    申请日：2021-09-02

    Applicant: Xiaogang Chen ,  Qinghua Li ,  Laurent Cariou

    Inventor： Xiaogang Chen ,  Qinghua Li ,  Laurent Cariou

    IPC: H04L25/02 ,  H04L5/00 ,  H04L25/03

    Abstract: This disclosure describes systems, methods, and devices related to EHT training fields. A device may send a trigger frame having a type of HE null data packet (NDP) feedback, wherein the trigger frame requests feedback from a station device (STA) of one or more station device (STA). The device may receive a frame from the STA, wherein the frame comprises an HE long training field (HE-LTF) portion and an HE short training field (HE-STF), wherein the HE-STF is generated in a frequency domain over a first bandwidth. The device may identify that the HE-LTF comprises energy on a set of tones, wherein the set of tones are selected based on feedback status values associated with a resource unit (RU) tone set index. The device may identify that the HE-STF comprises a second set of tones that are energized based on a sequence that is selected based on the first bandwidth used for the frame

    TRIGGER-BASED PPDU RESOURCE INDICATION FOR EHT NETWORKS
    30.
    发明申请
    TRIGGER-BASED PPDU RESOURCE INDICATION FOR EHT NETWORKS 有权

    公开(公告)号：US20210144752A1

    公开(公告)日：2021-05-13

    申请号：US17123893

    申请日：2020-12-16

    Applicant: Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Ziv Avital ,  Po-Kai Huang

    Inventor： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Ziv Avital ,  Po-Kai Huang

    IPC: H04W74/00 ,  H04W72/04 ,  H04W72/12 ,  H04W84/12 ,  G06F11/10

    Abstract: An extremely high throughput (EHT) station (STA) configured for trigger based (TB) transmission may decode an trigger frame (TF) received from an access point (AP). The TF may include an assignment of resources comprising one or more 20 MHz channels. The EHT STA may determine which of the one or more assigned channels are available for transmission and which of the allocated channels are unavailable when the EHT STA is assigned more than one 20 MHz channel. The EHT STA may encode a EHT TB PPDU in response to the trigger frame. The EHT TB PPDU may be encoded to include an EHT preamble followed by a data field. The EHT preamble may be encoded to indicate channel availability. The EHT STA may generate signaling to cause the EHT STA to transmit the encoded EHT TB PPDU only on the assigned channels that have been determined to be available.

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