公开(公告)号：US10945244B2

公开(公告)日：2021-03-09

申请号：US15962637

申请日：2018-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Hosein Nikopour ,  Alireza Bayesteh ,  Petar Djukic ,  Liqing Zhang ,  Peiying Zhu

IPC: H04W72/04 ,  H04W74/08 ,  H04L1/00

Abstract: A grant-free transmission mode may be used to communicate small traffic transmissions to reduce overhead and latency. The grant-free transmission mode may be used in downlink and uplink data channels of a wireless network. In the downlink channel, a base station transmits packets to a group of UEs in a search space without communicating any transmission code assignments to the UEs. The UEs receive the downlink packets using blind detection. In the uplink channel, UEs transmit packets in an access space using assigned access codes which are either independently derived by the UEs or otherwise communicated by the base station using a slow-signaling channel. Hence, the grant-free transmission mode allows mobile devices to make small traffic transmissions without waiting for uplink grant requests.

公开(公告)号：US10887899B2

公开(公告)日：2021-01-05

申请号：US15964555

申请日：2018-04-27

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：US10700838B2

公开(公告)日：2020-06-30

申请号：US15482463

申请日：2017-04-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alireza Bayesteh ,  Jianglei Ma ,  Hosein Nikopour ,  Zhihang Yi

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

Abstract: Embodiments are provided herein for increasing low density signature space for multiplexed transmissions for a plurality of users. The embodiments include generating a virtual signature using a combination operation on a plurality of basic signatures. The generated virtual signatures are provisioned as basic resource units (BRUs) for transmissions for corresponding users. The combination operation is a row-wise or column-wise permutation for combining, in each of the virtual signatures, rows or columns of corresponding basic signatures. The rows or columns represent sequences of frequency bands at one time interval or sequences of allocated time intervals at one frequency band. Alternatively, the combination operation is intra-basic resource unit (BRU) hopping. The embodiments also include generating a plurality of BRU sets comprised of virtual signatures. Each of the BRU sets is provisioned for a corresponding user.

公开(公告)号：US10700803B2

公开(公告)日：2020-06-30

申请号：US14825886

申请日：2015-08-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mahmoud Taherzadeh Boroujeni ,  Alireza Bayesteh ,  Hosein Nikopour ,  Mohammadhadi Baligh

IPC: H04J13/16 ,  H04L27/34 ,  H04L27/32 ,  H04L27/26 ,  H03M13/25 ,  H04J13/10 ,  H04L5/00 ,  H04L1/00

Abstract: A method for data transmission by a device in a communication system includes modulating a first data stream using a codebook to produce a second data stream, wherein the codebook is in correspondence with a multi-dimensional modulation map that includes a number of distinct projections per complex dimension that is smaller than a number of modulation points of the multi-dimensional modulation map, and transmitting the second data stream over allocated resources in the communication system.

公开(公告)号：US10374761B2

公开(公告)日：2019-08-06

申请号：US15655362

申请日：2017-07-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhihang Yi ,  Hosein Nikopour ,  Alireza Bayesteh

IPC: H04W24/08 ,  H04L5/00 ,  H04L27/00

Abstract: Disclosed herein are an active resource unit detector and a method of use thereof. An embodiment method of detecting active resource units among a plurality of potential resource units includes receiving an aggregate signal containing active pilots transmitted over the active resource units via random access transmissions. The active pilots are then detected and respectively associated with the active resource units according to a pilot-to-resource unit mapping.

公开(公告)号：US10320456B2

公开(公告)日：2019-06-11

申请号：US15345174

申请日：2016-11-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mahmoud Taherzadeh Boroujeni ,  Hosein Nikopour ,  Alireza Bayesteh ,  Mohammadhadi Baligh

IPC: H04L27/34 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/06 ,  H04L25/03 ,  H03M13/00

Abstract: A method for generating a codebook includes applying a unitary rotation to a baseline multidimensional constellation to produce a multidimensional mother constellation, wherein the unitary rotation is selected to optimize a distance function of the multidimensional mother constellation, and applying a set of operations to the multidimensional mother constellation to produce a set of constellation points. The method also includes storing the set of constellation points as the codebook of the plurality of codebooks.

公开(公告)号：US10291459B2

公开(公告)日：2019-05-14

申请号：US14930477

申请日：2015-11-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hosein Nikopour ,  Mohammadhadi Baligh

IPC: H04L27/36 ,  H04J13/00 ,  H04B7/0413 ,  H04B7/0456 ,  H04L27/34 ,  H04L5/00 ,  H04B1/707

Abstract: Coding gains can be achieved by encoding binary data directly to multi-dimensional codewords, which circumvents QAM symbol mapping employed by conventional CDMA encoding techniques. Further, multiple access can be achieved by assigning different codebooks to different multiplexed layers. Moreover, sparse codewords can be used to reduce baseband processing complexity on the receiver-side of the network, as sparse codewords can be detected within multiplexed codewords in accordance with message passing algorithms (MPAs).

公开(公告)号：US20190013894A1

公开(公告)日：2019-01-10

申请号：US16131873

申请日：2018-09-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alireza Bayesteh ,  Hosein Nikopour ,  Jianglei Ma

IPC: H04L1/00

Abstract: Systems, methods, and apparatuses for providing waveform adaptation are provided. In an example, a method is provided for identifying a plurality of candidate waveforms, and selecting one of the candidate waveforms for data transmission. The candidate waveforms may be identified in accordance with one or more criteria, such as a transmission capability of the transmitting device, a reception capability of the receiving device, a desired Peak-to-Average-Power-Ratio (PAPR) characteristic, adjacent channel interference (ACI) rejection requirements, spectrum localization requirements, and other criteria. The waveform selected for data transmission may be selected in accordance with one or more waveform selection criteria, such as traffic characteristic, application types, etc.

公开(公告)号：US20180242310A1

公开(公告)日：2018-08-23

申请号：US15962637

申请日：2018-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Hosein Nikopour ,  Alireza Bayesteh ,  Petar Djukic ,  Liqing Zhang ,  Peiying Zhu

IPC: H04W72/04 ,  H04W74/08 ,  H04L1/00

CPC classification number: H04W72/0413 ,  H04L1/0045 ,  H04W72/042 ,  H04W72/0466 ,  H04W74/0866

Abstract: A grant-free transmission mode may be used to communicate small traffic transmissions to reduce overhead and latency. The grant-free transmission mode may be used in downlink and uplink data channels of a wireless network. In the downlink channel, a base station transmits packets to a group of UEs in a search space without communicating any transmission code assignments to the UEs. The UEs receive the downlink packets using blind detection. In the uplink channel, UEs transmit packets in an access space using assigned access codes which are either independently derived by the UEs or otherwise communicated by the base station using a slow-signaling channel. Hence, the grant-free transmission mode allows mobile devices to make small traffic transmissions without waiting for uplink grant requests.

公开(公告)号：US20180242309A1

公开(公告)日：2018-08-23

申请号：US15962525

申请日：2018-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kelvin Kar Kin Au ,  Jianglei Ma ,  Hosein Nikopour ,  Alireza Bayesteh ,  Petar Djukic ,  Liqing Zhang ,  Peiying Zhu

IPC: H04W72/04 ,  H04L1/00 ,  H04W74/08

CPC classification number: H04W72/0413 ,  H04L1/0045 ,  H04W72/042 ,  H04W72/0466 ,  H04W74/0866

Abstract: A grant-free transmission mode may be used to communicate small traffic transmissions to reduce overhead and latency. The grant-free transmission mode may be used in downlink and uplink data channels of a wireless network. In the downlink channel, a base station transmits packets to a group of UEs in a search space without communicating any transmission code assignments to the UEs. The UEs receive the downlink packets using blind detection. In the uplink channel, UEs transmit packets in an access space using assigned access codes which are either independently derived by the UEs or otherwise communicated by the base station using a slow-signaling channel. Hence, the grant-free transmission mode allows mobile devices to make small traffic transmissions without waiting for uplink grant requests.