公开(公告)号：US20170063512A1

公开(公告)日：2017-03-02

申请号：US15123247

申请日：2015-03-04

Applicant: Tianyu Wu ,  Jianhan Liu ,  KIRAN ULN ,  Thomas Edward Pare, JR. ,  MEDIATEK INC.

Inventor： Tianyu Wu ,  Jianhan Liu ,  KIRAN ULN ,  Thomas Edward Pare, JR.

IPC: H04L5/00 ,  H04W72/08 ,  H04W72/04 ,  H04B7/04

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0623 ,  H04B7/0626 ,  H04B7/0632 ,  H04B17/24 ,  H04B17/336 ,  H04L1/1671 ,  H04L1/1685 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04W72/0446 ,  H04W72/082

Abstract: A method of sub-channel feedback in OFDMA systems is provided. A wireless receiving device (STA) receives a radio signal from a transmitting device (AP) over a wide channel in an OFDMA system. The radio signal is transmitted over multiple sub-channels of the wide channel. The STA estimates channel quality information based on the received radio signal for each sub-channel. The STA then sends feedback information to the transmitting device. The feedback information comprises the estimated channel quality information for a selected subset of sub-channels from the wide channel based on a predefined rule. In one embodiment, the feedback information is embedded within an ACK/BA frame or is carried in a frame immediately subsequent to the ACK/BA frame.

Abstract translation: 提供OFDMA系统中子信道反馈的方法。 无线接收设备（STA）通过OFDMA系统中的宽信道从发射设备（AP）接收无线电信号。 无线电信号通过宽信道的多个子信道发送。 STA基于每个子信道的接收到的无线电信号来估计信道质量信息。 然后，STA向发送设备发送反馈信息。 基于预定义规则，反馈信息包括来自宽信道的子信道的选定子集的估计信道质量信息。 在一个实施例中，反馈信息被嵌入到ACK / BA帧内，或者紧接在ACK / BA帧之后的帧中被携带。

公开(公告)号：US20240171438A1

公开(公告)日：2024-05-23

申请号：US18515311

申请日：2023-11-21

Applicant: MediaTek Inc.

Inventor： Shengquan Hu ,  Ching-Wen Hsiao ,  Jianhan Liu ,  Thomas Edward Pare, JR.

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04L5/0007 ,  H04L5/0048

Abstract: Various schemes pertaining to long training field (LTF) and short training field (STF) transmission for wide bandwidth 240 MHz with more direct-current (DC) tones in wireless communications are described. A processor of an apparatus generates either or both of an LTF and a STF of a physical-layer protocol data unit (PPDU) with a center 996-tone resource unit (RU) having more than a predetermined number of DC tones. The processor then performs a wireless communication in a wide bandwidth (e.g., 240 MHz) with the PPDU.

公开(公告)号：US20240048421A1

公开(公告)日：2024-02-08

申请号：US18226831

申请日：2023-07-27

Applicant: MediaTek Inc.

Inventor： Shengquan Hu ,  Jianhan Liu ,  Tung Sheng Yang ,  Thomas Edward Pare, JR.

IPC: H04L27/26

CPC classification number: H04L27/262

Abstract: Various schemes pertaining to peak-to-average power ratio (PAPR) reduction for resource unit (RU) duplication and tone repetition in wireless communications are described. An apparatus generates a resource unit (RU) or multi-RU (MRU). The apparatus then performs a wireless communication using the RU or MRU with either or both of a RU duplication and a tone repetition such that a peak-to-average power ratio (PAPR) is reduced.

公开(公告)号：US20230370189A1

公开(公告)日：2023-11-16

申请号：US18195291

申请日：2023-05-09

Applicant: MediaTek Inc.

Inventor： Jianhan Liu ,  Shengquan Hu ,  Gary A. Anwyl ,  Thomas Edward Pare, JR.

IPC: H04K3/00 ,  H04L5/00

CPC classification number: H04K3/65 ,  H04L5/0007 ,  H04L5/0048

Abstract: Techniques pertaining to enhanced long range (ELR) communication schemes in wireless communications are described. An apparatus (e.g., a station (STA)) performs an ELR communication by either: (i) transmitting an ELR physical-layer protocol data unit (PPDU); or (ii) receiving the ELR PPDU. The ELR PPDU includes a spoofing preamble, an ELR preamble and an ELR data portion.

公开(公告)号：US20230354195A1

公开(公告)日：2023-11-02

申请号：US18220126

申请日：2023-07-10

Applicant: MEDIATEK INC.

Inventor： Jianhan Liu ,  Po-Yuen Cheng ,  Thomas Edward Pare, JR.

IPC: H04W52/02 ,  H04L27/04

CPC classification number: H04W52/0229 ,  H04L27/04 ,  H04W52/0235 ,  H04W84/12

Abstract: Systems and methods of transmitting and receiving a Wake-Up Radio (WUR) packet by using a simplified preamble structure that contains no training field. The preamble carries a signature sequence selected from a set of predefined sequences, each corresponding to a different data transmission rate. The preamble and the control information of the WUR packet are transmitted in the same rate as indicated by the selected sequence. Hence, a receiving WUR can determine the data transmission rate and locate the associated control information directly if a sequence that matches a predefined signature sequence is detected. The same sequence or in combination with an additional sequence in the preamble may also be used to indicate automatic gain control synchronization, packet type and other related information.

公开(公告)号：US20180295578A1

公开(公告)日：2018-10-11

申请号：US15928514

申请日：2018-03-22

Applicant: MEDIATEK INC.

Inventor： Jianhan Liu ,  Po-Yuen Cheng ,  Thomas Edward Pare, JR.

IPC: H04W52/02 ,  H04L27/04

Abstract: Systems and methods of transmitting and receiving a Wake-Up Radio (WUR) packet by using a simplified preamble structure that contains no training field. The preamble carries a signature sequence selected from a set of predefined sequences, each corresponding to a different data transmission rate. The preamble and the control information of the WUR packet are transmitted in the same rate as indicated by the selected sequence. Hence, a receiving WUR can determine the data transmission rate and locate the associated control information directly if a sequence that matches a predefined signature sequence is detected. The same sequence or in combination with an additional sequence in the preamble may also be used to indicate automatic gain control synchronization, packet type and other related information.

公开(公告)号：US20160065467A1

公开(公告)日：2016-03-03

申请号：US14837296

申请日：2015-08-27

Applicant: MEDIATEK INC.

Inventor： Tianyu Wu ,  Jianhan Liu ,  Thomas Edward Pare, JR.

IPC: H04L12/741 ,  H04L29/06

CPC classification number: H04L65/60 ,  H04B7/0452 ,  H04B7/0689 ,  H04L1/0004 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0091 ,  H04L27/0008 ,  H04L27/2602

Abstract: A method of providing a configurable signaling (SIG) field is proposed to reduce the SIG overhead of a data packet in a wireless network. The SIG field comprises both HE-SIG-A field and HE-SIG-A2 field. HE-SIG-A field contains only necessary information for a default network scenario (e.g., indoor non-OFDMA SU-MIMO) to avoid HE-SIG-A2. HE-SIG-A2 field contains OFDMA, MU-MIMO, and/or outdoor parameter settings. By using HE-SIG-A to indicate the existence, mode, and/or length of HE-SIG-A2, the signaling overhead for default scenario can be reduced by avoiding the entire HE-SIG-A2 field. The number of symbols required for HE-SIG-A2 is adjustable based on each transmission scenario and indicated by HE-SIG-A. Further, because higher MCS such as QPSK may be supported for HE-SIG-A2, additional signaling overhead is reduced.

Abstract translation: 提出了提供可配置信令（SIG）字段的方法，以减少无线网络中的数据分组的SIG开销。 SIG字段包括HE-SIG-A字段和HE-SIG-A2字段。 HE-SIG-A字段仅包含用于避免HE-SIG-A2的默认网络场景（例如，室内非OFDMA SU-MIMO）的必要信息。 HE-SIG-A2字段包含OFDMA，MU-MIMO和/或户外参数设置。 通过使用HE-SIG-A来表示HE-SIG-A2的存在，模式和/或长度，通过避免整个HE-SIG-A2字段，可以减少默认情况的信令开销。 HE-SIG-A2所需的符号数量可根据每种传输方案进行调整，并由HE-SIG-A指示。 此外，由于HE-SIG-A2可能支持诸如QPSK的更高的MCS，所以额外的信令开销降低。