公开(公告)号：US11018829B2

公开(公告)日：2021-05-25

申请号：US16503731

申请日：2019-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhihang Yi ,  Jianglei Ma ,  Liqing Zhang ,  Kelvin Kar Kin Au

IPC: H04L5/00 ,  H04L27/26

Abstract: A method of configuring a pilot signal includes defining a first pilot signal arrangement and defining a second pilot signal arrangement. Also, the method includes determining, by a communications controller, a first determined pilot signal arrangement in accordance with the first defined pilot signal arrangement, the second defined pilot signal arrangement, and a set of characteristics and transmitting, by the communications controller, the pilot signal having the first determined pilot signal arrangement.

公开(公告)号：US20210119753A1

公开(公告)日：2021-04-22

申请号：US17138133

申请日：2020-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Liqing Zhang ,  Jianglei Ma

IPC: H04L5/00 ,  H04W72/04

Abstract: System and method embodiments are disclosed to provide mechanisms wireless communications. A method comprises transmitting, by a network device to a non-long term evolution (LTE) user equipment (UE), a bandwidth partitioning information describing a non-LTE bandwidth partition of a system bandwidth. The system bandwidth comprises an LTE bandwidth partition coexisting with the non-LTE bandwidth partition in the system bandwidth, and the LTE bandwidth partition is within the non-LTE bandwidth partition or the LTE bandwidth partition is adjacent to the non-LTE bandwidth partition.

公开(公告)号：US10938635B2

公开(公告)日：2021-03-02

申请号：US15983890

申请日：2018-05-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Toufiqul Islam ,  Yu Cao ,  Jianglei Ma ,  Hua Xu ,  Amine Maaref ,  Liqing Zhang ,  Kelvin Kar Kin Au

IPC: H04L12/24 ,  H04W72/04 ,  H04W88/08

Abstract: Systems and methods are provided that facilitate multiple switching points within a slot. A slot format indication is conveyed to a user equipment which indicates which symbols within a slot are uplink, downlink or unknown. Some formats feature half-slot switching meaning that a switch from uplink to downlink transmission takes place twice within a slot. Switching on a more frequent basis can deliver improved latency.

公开(公告)号：US10931416B2

公开(公告)日：2021-02-23

申请号：US16460892

申请日：2019-07-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuqiang Xu ,  Yan Chen ,  Liqing Zhang ,  Yi Wang

IPC: H04W72/04 ,  H04L5/00

Abstract: Embodiments of this application provide a data transmission method, a network device, and a terminal device. The method may include detecting, by a network device, a first signal in an uplink signal. The method may also include determining, by the network device, a signal structure of the uplink signal based on a result of detecting the first signal. Furthermore, the method may include receiving, by the network device, the uplink signal based on the signal structure, and/or responding to the uplink signal based on the signal structure. According to the data transmission method in the embodiments of this application, before receiving data, the network device can determine the signal structure, used by the terminal device, of the uplink signal, and then use a corresponding receiving method to avoid complexity and a reliability risk that are caused by completely blind detection performed by the network device, as well as to effectively reduce a delay and signaling overheads.

公开(公告)号：US10903961B2

公开(公告)日：2021-01-26

申请号：US16165680

申请日：2018-10-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kelvin Kar Kin Au ,  Liqing Zhang ,  Mohammadhadi Baligh ,  Jianglei Ma ,  Wen Tong

IPC: H04L5/00 ,  H04W74/00

Abstract: A method and system for operating a user equipment (UE) wherein a first set of radio access procedures are supported when the UE is in a first operating state, and a second set of radio access procedures are supported when the UE is in a second operating state.

公开(公告)号：US10887898B2

公开(公告)日：2021-01-05

申请号：US15204751

申请日：2016-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Hosein Nikopour ,  Petar Djukic ,  Zhihang Yi ,  Alireza Bayesteh ,  Jianglei Ma ,  Mohammadhadi Baligh ,  Liqing Zhang

IPC: H04W72/12 ,  H04W72/02 ,  H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04L1/18 ,  H04W74/08

Abstract: A method embodiment includes implementing, by a base station (BS), a grant-free uplink transmission scheme. The grant-free uplink transmission scheme defines a first contention transmission unit (CTU) access region in a time-frequency domain, defines a plurality of CTUs, defines a default CTU mapping scheme by mapping at least some of the plurality of CTUs to the first CTU access region, and defines a default user equipment (UE) mapping scheme by defining rules for mapping a plurality of UEs to the plurality of CTUs.

公开(公告)号：US10749644B2

公开(公告)日：2020-08-18

申请号：US15637842

申请日：2017-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Toufiqul Islam ,  Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang

IPC: H04L5/00 ,  H04W72/00 ,  H04W72/04 ,  H04W72/12

Abstract: Systems and method for defining sub-bands are provided. Each sub-band has a respective sub-carrier spacing, and at least one sub-band portion. Each sub-band portion has a channelization configuration including a resource block size configuration and a sub-band portion bandwidth. The sub-bands are allocated based on a sub-band configuration framework that includes a preconfigured set of possible sub-carrier spacings, a preconfigured set of possible resource block sizes, and a preconfigured set of possible sub-band portion bandwidths. In some embodiments, to improve bandwidth utilization, the channelization configuration for a given sub-band configures a plurality of resource blocks having a first number of sub-carriers and an additional resource block having a number of sub-carriers other than the first number. A bandwidth portion may include two bandwidth portions having different channelizations with differing numbers of sub-carriers per resource block such that more useful sub-carriers are used than would be possible if only resource blocks having a largest of the differing numbers of sub-carriers were used.

公开(公告)号：US10721041B2

公开(公告)日：2020-07-21

申请号：US16222650

申请日：2018-12-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang

IPC: H04L5/00 ,  H04L27/26 ,  H04L5/06

Abstract: Different filtered-orthogonal frequency division multiplexing (f-OFDM) frame formats may be used to achieve the spectrum flexibility. F-OFDM waveforms are generated by applying a pulse shaping digital filter to an orthogonal frequency division multiplexed (OFDM) signal. Different frame formats may be used to carry different traffic types as well as to adapt to characteristics of the channel, transmitter, receiver, or serving cell. The different frame formats may utilize different sub-carrier (SC) spacings and/or cyclic prefix (CP) lengths. In some embodiments, the different frame formats also utilize different symbol durations and/or transmission time interval (TTI) lengths.

公开(公告)号：US10582494B2

公开(公告)日：2020-03-03

申请号：US15648186

申请日：2017-07-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang ,  Zhihang Yi ,  Hosein Nikopour

IPC: H04W72/04 ,  H04W28/02 ,  H04W88/08

Abstract: Methods and devices are provided for communicating data in a wireless channel. In one example, a method includes adapting the transmission time interval (TTI) length of transport container for transmitting data in accordance with a criteria. The criteria may include (but is not limited to) a latency requirement of the data, a buffer size associated with the data, a mobility characteristic of a device that will receive the data. The TTI lengths may be manipulated for a variety of reasons, such as for reducing overhead, satisfy quality of service (QoS) requirements, maximize network throughput, etc. In some embodiments, TTIs having different TTI lengths may be carried in a common radio frame. In other embodiments, the wireless channel may partitioned into multiple bands each of which carrying (exclusively or otherwise) TTIs having a certain TTI length.

公开(公告)号：US20200014504A1

公开(公告)日：2020-01-09

申请号：US16518450

申请日：2019-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Liqing Zhang ,  Jing Qiu

IPC: H04L5/00 ,  H04L27/26 ,  H04L5/14

Abstract: A method for wireless communications includes receiving signaling for indicating a time division duplexing (TDD) frame structure configuration from a base station. The TDD frame structure configuration corresponds to a time duration of 0.1 ms, 0.125 ms, 0.2 ms, 0.25 ms, 0.5 ms, or 1.0 ms, the TDD frame structure configuration including two switching points between downlink transmissions and uplink transmissions. The method further includes communicating downlink and uplink transmissions according to the TDD frame structure configuration. The TDD frame structure configuration may further include a guard period for separating the first downlink transmission and the first uplink transmission in the time domain.