公开(公告)号：US20240195559A1

公开(公告)日：2024-06-13

申请号：US18514941

申请日：2023-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi QIN ,  Peng WANG ,  Branislav M. POPOVIC

IPC: H04L5/00 ,  H04L5/14

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/1453

Abstract: A first communication device determines a DMRS sequence based on a cover code in a set of cover codes; and thereafter determines a DMRS by mapping the DMRS sequence onto one or more PRBs. The cover code is dependent on a DMRS antenna port index, and cover codes in the set of cover codes are orthogonal to each other in each PRB, and wherein a maximum correlation power between two cover codes in the set of cover codes is larger than 0 in each half PRB. Finally, the first communication device transmits the DMRS via a DMRS antenna port having DMRS antenna port index to a second communication device which receive the DMRS and associated data signal. The second communication device demodulates the associated data signal based on the received DMRS and the DMRS sequence.

公开(公告)号：US20230128676A1

公开(公告)日：2023-04-27

申请号：US18067469

申请日：2022-12-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fredrik BERGGREN ,  Branislav M. POPOVIC

IPC: H04L27/26 ,  H04L27/10

Abstract: Various embodiments of this disclosure relate to generation and reception of signals comprising cyclically shifted basis functions. A device may obtain a set of modulation symbols and modulate a plurality of basis functions based on the set of modulation symbols to generate a signal. The plurality of basis functions may comprise cyclically shifted versions of a basis function and a periodic autocorrelation function of the basis function may comprise an ideal (e.g., perfect) periodic autocorrelation function.

公开(公告)号：US20210076425A1

公开(公告)日：2021-03-11

申请号：US16950159

申请日：2020-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Renaud-Alexandre PITAVAL ,  Branislav M. POPOVIC

IPC: H04W74/08 ,  H04W72/04 ,  H04J13/00 ,  H04L27/26

Abstract: A network access node and a client device for generating and using cubic phase polynomial sequences (si, sj) of length L with a third order coefficient value a3 belonging to the subset of sequences (Sk) are described. The network access node transmits a control message to the client device, wherein the control message indicates the cyclical shift value NCS and the third order coefficient value a3. The client device receives the control message and determines a cubic polynomial phase sequence (si) belonging to the subset of sequences (Sk) based on the cyclical shift value NCS and the third order coefficient value a3. The client device thereafter transmits the determined cubic polynomial phase sequence (si) as a random access preamble to the network access node.

公开(公告)号：US20180123636A1

公开(公告)日：2018-05-03

申请号：US15858756

申请日：2017-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anahid Robert SAFAVI ,  Alberto Giuseppe PEROTTI ,  Branislav M. POPOVIC

IPC: H04B1/707 ,  H04J13/00

CPC classification number: H04B1/707 ,  H04J13/0007

Abstract: A transmitter apparatus in a wireless communication system that includes a processor. In one embodiment, the processor is configured to receive at least one modulated data message and spread the at least one modulated data message into a transmission signal using a low density signature matrix. The low density signature matrix is a cycle-free signature matrix. A receiver apparatus is configured to receive the transmission signal and detect within the received transmission signal at least one modulated data message. The processor is configured to detect the at least one modulated data message in one iteration using the cycle-free signature matrix.

公开(公告)号：US20170041178A1

公开(公告)日：2017-02-09

申请号：US15277771

申请日：2016-09-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alberto Giuseppe PEROTTI ,  Pablo SOLDATI ,  Branislav M. POPOVIC

IPC: H04L27/34 ,  H04B17/336 ,  H04W72/02 ,  H04L5/00

CPC classification number: H04L27/3461 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0042 ,  H04L1/0047 ,  H04L5/0057 ,  H04L27/3488 ,  H04W28/06 ,  H04W28/18 ,  H04W72/02

Abstract: A data transmission and signaling method in a transmitter device configured for concurrent transmission of non-orthogonal independent downlink data streams to receiver devices in a wireless communication system comprises sending to all receiver devices control information that includes indices of receiver devices selected for transmission, code rates of selected receiver devices, a label bit-to-receiver device allocation, an index of an expanded constellation, and a number of resource elements used for transmission.

Abstract translation: 发射机设备中的数据传输和信令方法被配置用于在无线通信系统中向接收机设备并发传输非正交独立下行链路数据流包括向所有接收机设备发送控制信息，该信息包括被选择用于传输的接收机设备的索引， 选择的接收机设备，标签比特到接收机设备分配，扩展星座的索引以及用于传输的资源元素的数量。

公开(公告)号：US20160261402A1

公开(公告)日：2016-09-08

申请号：US15155753

申请日：2016-05-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Branislav M. POPOVIC

IPC: H04L7/04 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L7/043 ,  H04L5/0007 ,  H04L7/041 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2649 ,  H04L27/2655 ,  H04L27/2675

Abstract: A method is provided for improving synchronization and information transmission in a communication system, including: generating a signal with a centrally symmetric part s(k) exploitable for synchronization; and sending the signal over a communication channel. The signal is based on a uniquely identifiable sequence c(l) from a set of sequences exploitable for information transmission. The centrally symmetric part s(k) is centrally symmetric in the shape of absolute value thereof. The centrally symmetric part s(k) is of arbitrary length N.

Abstract translation: 提供一种用于改善通信系统中的同步和信息传输的方法，包括：产生具有可用于同步的中心对称部分s（k）的信号; 并通过通信信道发送信号。 该信号基于来自可用于信息传输的一组序列的唯一可识别的序列c（1）。 中心对称部分s（k）以其绝对值的形状为中心对称。 中心对称部分s（k）具有任意长度N.

公开(公告)号：US20210337604A1

公开(公告)日：2021-10-28

申请号：US17370444

申请日：2021-07-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Branislav M. POPOVIC ,  Peng WANG ,  Fredrik BERGGREN

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04L5/00 ,  H04J13/00

Abstract: The invention relates to a client device (100) and a network access node (300) for transmitting and receiving a random access preamble. The modulation sequence for the random access preamble is based on a first sequence and a second sequence. The first sequence is a sequence from a set of near-orthogonal sequences and the second sequence is a sequence from a set of constant envelope sequences. Due to its construction, the random access preamble herein provides low PAPR and suppresses the side-lobes in its auto-correlation function while producing a set of preambles with low cross-correlation. Furthermore, the invention also relates to corresponding methods and a computer program.

公开(公告)号：US20210135784A1

公开(公告)日：2021-05-06

申请号：US17149462

申请日：2021-01-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anahid ROBERT SAFAVI ,  Alberto Giuseppe PEROTTI ,  Branislav M. POPOVIC ,  Thorsten SCHIER

IPC: H04L1/00

Abstract: A transmitting device and a receiving device for reliable reception of control messages such as downlink control information is provided. The transmitting device forms a control message which comprises control information, a first CRC word (W1) and a second CRC word (W2). The control message is sent to the receiving device which obtains a first CRC check outcome based on performing a first CRC check on the control message, and a second CRC check outcome based on performing a second CRC check on the control message. Thereby, more reliable reception of control messages is possible. Furthermore, the present application also relates to corresponding methods and a computer program.

公开(公告)号：US20210006321A1

公开(公告)日：2021-01-07

申请号：US17029937

申请日：2020-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Peng WANG ,  Majid NASIRI KHORMUJI ,  Branislav M. POPOVIC

IPC: H04B7/06 ,  H04W76/19 ,  H04W16/28 ,  H04B7/08

Abstract: Example wireless communications methods and apparatus with two-way beam failure recovery are disclosed. One example method includes receiving a downlink beam failure recovery request by a network device from a client device indicating at least one new downlink candidate beam determined to replace at least one failed downlink beam. The network device detects at least one failed uplink beam, determines at least one new uplink candidate beam to replace the detected at least one failed uplink beam, and generates uplink redirection information indicating the determined at least one new uplink candidate beam. A response including the generated uplink redirection information is generated by the network device, and transmitted to the client device.

公开(公告)号：US20190245724A1

公开(公告)日：2019-08-08

申请号：US16267002

申请日：2019-02-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fan WANG ,  Branislav M. POPOVIC ,  Fredrik BERGGREN

IPC: H04L27/26

CPC classification number: H04L27/261 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/2666 ,  H04L27/2673 ,  H04L27/2675

Abstract: A transmitting apparatus for a wireless communication system, where the wireless communication system includes an OFDM based waveform corresponding to a plurality of pre-defined subcarrier spacing values including at least a first subcarrier spacing value Δf1 and at least a second subcarrier spacing value Δf2. The transmitting apparatus includes a processor and a transmitter where the processor is configured to generate a signal S1 that is a NSF time repetition of an another signal S2. A duration of the another signal S2 is 1/Δf2, NSF=Δf2/Δf1 is an integer greater than 1, and the transmitter is configured to transmit a symbol comprising S1.