公开(公告)号：US20180337811A1

公开(公告)日：2018-11-22

申请号：US16034721

申请日：2018-07-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Doron Ezri ,  Shimon Shilo ,  Hao Tang ,  Jiehua Xiao ,  Jianmin Lu ,  Ori Shental ,  Ezer Melzer

IPC: H04L27/26 ,  H04B7/0452 ,  H04L5/00

CPC classification number: H04L27/2614 ,  H04B7/0452 ,  H04L5/005 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/264

Abstract: An apparatus for band-limited frequency division multiplexing for uplink transmission to a base station or access point, particularly from an IoT device, comprises a signal modulator to transmit a signal over a set of contiguous equally spaced frequency sub-carriers ranging from a lowest frequency sub-carrier via intermediate sub-carriers to a highest frequency sub-carrier. The signal modulator contains a filter to apply asymmetric filtering over the range of the frequency sub-carriers, thereby to reduce a peak-to-average power ratio of the transmitted signal.

公开(公告)号：US12160313B2

公开(公告)日：2024-12-03

申请号：US17237867

申请日：2021-04-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shimon Shilo ,  Leonid Epstein ,  Yaron Ben-Arie ,  Ezer Melzer

IPC: H04L1/00 ,  H04L1/1812

Abstract: A transmitting device for supporting Hybrid Automatic Repeat Request (HARQ) includes scrambling and encoding, in which the order of scrambling and encoding is changed compared to the conventional transmitter. Likewise, a receiving device for supporting HARQ includes descrambling and decoding, in which the order of descrambling and decoding is changed compared to the conventional receiver. In particular, the transmitting device is configured to encode at least one data unit using Forward Error Correction (FEC) coding, scramble the encoded data unit based on a scrambling seed, provide an indication of the scrambling seed that is separate from the scrambled and encoded data unit, and transmit the indication of the scrambling seed and then the scrambled and encoded data unit to the receiving device.

公开(公告)号：US12015489B2

公开(公告)日：2024-06-18

申请号：US17521456

申请日：2021-11-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shimon Shilo ,  Nadav Basson ,  Ezer Melzer ,  Yaron Ben-Arie ,  Mor Reich ,  Doron Ezri

IPC: H04L1/1812 ,  H04L1/08

CPC classification number: H04L1/1819 ,  H04L1/08

Abstract: A communication transmitter retransmits a Medium Access Control (MAC) Protocol Data unit (MPDU) to a communication receiver over a communication channel using a Hybrid Automatic Repeat reQuest (HARQ) retransmission scheme. The MPDU includes a plurality of information bits. The communication transmitter includes a processor configured to determine the MPDU to be retransmitted based on a Block ACK frame received from the communication receiver, the Block ACK frame indicating previously correctly decoded MPDUs at the communication receiver, and to generate a bit sequence to be transmitted to the communication receiver, wherein the bit sequence comprises the plurality of information bits. The communication transmitter further comprises a communication interface configured to transmit the bit sequence to the communication receiver for retransmitting the MPDU to the communication receiver.

公开(公告)号：US11984990B2

公开(公告)日：2024-05-14

申请号：US17099251

申请日：2020-11-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leonid Epstein ,  Shimon Shilo ,  Yaron Ben-Arie ,  Ezer Melzer ,  Doron Ezri ,  Wei Lin

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1812

CPC classification number: H04L1/1819 ,  H04L1/0008 ,  H04L1/0011 ,  H04L1/0061 ,  H04L1/1621

Abstract: The present disclosure relates to Hybrid Automatic Repeat Request (HARQ) in wireless communication technologies, particularly HARQ for IEEE 802.11, i.e. HARQ for Wi-Fi. One example transmitting device is configured to encapsulate a data unit in a container unit, and encode the container unit into a codeword set of one or more codewords. One example receiving device is configured to receive, from a transmitting device, at least one codeword set of one or more codewords, decode the codewords of the codeword set to obtain a container unit, and decapsulate the container unit to obtain a data unit. A bit-size of the container unit is equal to a bit-size of the codeword set in the transmitting device and the receiving device.

公开(公告)号：US20230344694A1

公开(公告)日：2023-10-26

申请号：US18345807

申请日：2023-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shimon Shilo ,  Oded Redlich ,  Ezer Melzer ,  Doron Ezri ,  Yoav Levinbook ,  Genadiy Tsodik ,  Jian Yu ,  Mengshi Hu

IPC: H04W74/08 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2614 ,  H04L5/0053 ,  H04W74/0816

Abstract: This application relates to the field of communications technologies, in particularly related to wireless fidelity (WIFI) technologies, and provides a method and apparatus for reducing peak to average power ratio (PAPR) for transmitting a physical layer protocol data units (PPDUs). The method can be used for both an access point (AP) and a station (STA). The method comprises: operating on a first disregard bits sequence to obtain a second disregard bits sequence, wherein the first disregard bits sequence is with all bits set to ‘1’, and transmitting the PPDU, wherein the PPDU comprises the second disregard bits sequence.

公开(公告)号：US20230300014A1

公开(公告)日：2023-09-21

申请号：US18324714

申请日：2023-05-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shimon Shilo ,  Oded Redlich ,  Genadiy Tsodik ,  Jian Yu ,  Ming Gan ,  Ezer Melzer ,  Doron Ezri ,  Yoav Levinbook ,  Mengshi Hu

IPC: H04L27/26 ,  H04W28/06

CPC classification number: H04L27/2615 ,  H04W28/065 ,  H04W84/12

Abstract: This application relates to the field of communications technologies, in particular Wireless Local Area Network technologies, and provides a method and apparatus for reducing a peak to average power ratio (PAPR) for transmitting a physical layer protocol data unit (PPDU), in particular reducing the PAPR for the U-SIG field. Methods are disclosed for both an access point (AP) and stations (STA).

公开(公告)号：US11277291B2

公开(公告)日：2022-03-15

申请号：US16875781

申请日：2020-05-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yoav Levinbook ,  Ezer Melzer ,  Doron Ezri ,  Minghui Xu ,  Xi Zhang

IPC: H04L27/26 ,  H04L5/00

Abstract: An apparatus for constructing a pre-DFT sample sequence for an OFDM-signal is provided. The apparatus comprises: a processor configured to construct a pre-DFT sample sequence with a pre-defined length such that it comprises data; and a PTRS-group, wherein the last sample of the PTRS-group is placed within the pre-DFT sample sequence at a pre-defined position located B samples before the end of the pre-DFT sample sequence.

公开(公告)号：US11949542B2

公开(公告)日：2024-04-02

申请号：US18345807

申请日：2023-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shimon Shilo ,  Oded Redlich ,  Ezer Melzer ,  Doron Ezri ,  Yoav Levinbook ,  Genadiy Tsodik ,  Jian Yu ,  Mengshi Hu

IPC: H04L27/26 ,  H04L5/00 ,  H04W74/0816

CPC classification number: H04L27/2614 ,  H04L5/0053 ,  H04W74/0816

Abstract: This application relates to the field of communications technologies, in particularly related to wireless fidelity (WIFI) technologies, and provides a method and apparatus for reducing peak to average power ratio (PAPR) for transmitting a physical layer protocol data units (PPDUs). The method can be used for both an access point (AP) and a station (STA). The method comprises: operating on a first disregard bits sequence to obtain a second disregard bits sequence, wherein the first disregard bits sequence is with all bits set to ‘1’, and transmitting the PPDU, wherein the PPDU comprises the second disregard bits sequence.

公开(公告)号：US11108609B2

公开(公告)日：2021-08-31

申请号：US16806607

申请日：2020-03-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yoav Levinbook ,  Doron Ezri ,  Ezer Melzer

IPC: H04L27/26 ,  H04B1/02 ,  H04B1/06 ,  H04J1/02 ,  H04L5/00 ,  H04L25/03

Abstract: A transmitter includes a processor configured to convert a primary sequence of modulation symbols into a primary signal using a universal pulse shape. The processor is further configured to convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal using an altered version of the universal pulse shape. In addition, the processor is configured to combine the primary signal and the auxiliary signal to create a joint output signal.

公开(公告)号：US10680870B2

公开(公告)日：2020-06-09

申请号：US16408067

申请日：2019-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yoav Levinbook ,  Doron Ezri ,  Ezer Melzer ,  Zongjie Wang

IPC: H04L27/26 ,  G06F17/14 ,  H04B7/0413 ,  H04L5/00 ,  H04L27/20 ,  H04L25/03

Abstract: A transmitter, comprising a processor adapted to convert a primary sequence of modulation symbols into a primary signal, using a primary pulse shape, convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal using an auxiliary pulse shape and create a joint output signal based on the primary signal and on the auxiliary signal.