公开(公告)号：US11336353B2

公开(公告)日：2022-05-17

申请号：US16567800

申请日：2019-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Majid Nasiri Khormuji ,  Renaud-Alexandre Pitaval

IPC: H04W72/04 ,  H04B7/06 ,  H04W72/08

Abstract: Devices, methods and computer programs for wireless communications with rotational beam management are disclosed. Information from past beam tracking stages can be used for a next beam tracking stage, since a next beam codebook to be used for beam scanning depends on an earlier beam codebook.

公开(公告)号：US11310837B2

公开(公告)日：2022-04-19

申请号：US16950159

申请日：2020-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Renaud-Alexandre Pitaval ,  Branislav M. Popovic

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

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 () 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 () 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：US11950214B2

公开(公告)日：2024-04-02

申请号：US17150915

申请日：2021-01-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Renaud-Alexandre Pitaval ,  Branislav M. Popovic ,  Fredrik Berggren ,  Peng Wang

IPC: H04W72/04 ,  H04W72/0453 ,  H04W74/00 ,  H04W74/0833

CPC classification number: H04W72/0453 ,  H04W74/004 ,  H04W74/006 ,  H04W74/0833

Abstract: A client device for wireless communication includes a transceiver and a processor. The transceiver is configured to receive frequency resource information to indicate a set of frequency resources for a physical random access channel (PRACH) preamble transmission. The frequency resource information includes at least one of: an interlace information indicating at least one of an interlace of a block-interlaced frequency-division multiplexing (B-IFDM) allocation, a resource element allocation information indicating a subset of resource elements within each block of the at least one B-IFDM interlace, and a resource element spacing information, such that an at least one resource element within at least one block of the at least one B-IFDM interlace is allocated for the transmission of one PRACH preamble according to a tone-interlaced frequency-division multiplexing (T-IFDM) allocation. The resource element allocation is repeated in each block of the at least one B-IFDM interlace.

公开(公告)号：US20220303075A1

公开(公告)日：2022-09-22

申请号：US17835116

申请日：2022-06-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Renaud-Alexandre Pitaval ,  Yi Qin

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26

Abstract: A wireless transmitter, receiver and a method of wireless communication, the method including obtaining prime factors for a number NRE of time-frequency resources, including at least two different prime factors, generating a codebook comprising at least one codeword, each of the at least one codeword being generated by multiplying at least one mask sequence with one vector of an orthogonal set of vectors, and each mask sequence of the at least one mask sequence being obtained from an exponentiation operation involving a base and an exponent, the base being defined by the at least two different prime factors, and the exponent being defined by a quadratic polynomial having a number of m variables, where m is equal to a total number of the prime factors constituting NRE, and providing, to a receiver, information bits in at least one of the at least one codeword over the NRE time-frequency resources.