公开(公告)号：US12082020B2

公开(公告)日：2024-09-03

申请号：US16926479

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  George Cherian ,  Abhishek Pramod Patil ,  Alfred Asterjadhi ,  Venkata Ramanan Venkatachalam Jayaraman

IPC: H04W24/10 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/06 ,  H04B17/318 ,  H04B17/336 ,  H04B17/373 ,  H04J11/00 ,  H04B17/21

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/0632 ,  H04B17/318 ,  H04B17/336 ,  H04B17/373 ,  H04J11/0053 ,  H04B7/0617 ,  H04B17/21

Abstract: Various aspects of the disclosure relate to distributed multiple-input multiple-output (MIMO) communication such as coordinated beamforming or Joint MIMO. In some aspects, distributed MIMO is used to support communication in a cluster of wireless nodes (e.g., access points). A distributed MIMO scheduling scheme as taught herein is used to determine each wireless node (e.g., station) in the cluster that needs to be nulled by another wireless node (e.g., an access point). For example, one of the wireless nodes may obtain signal measurement information from the other wireless nodes and thereby generate a list of wireless nodes (e.g., access points) that need to null one or more wireless nodes (e.g., stations).

公开(公告)号：US20240204902A1

公开(公告)日：2024-06-20

申请号：US18587134

申请日：2024-02-26

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Eko N. Onggosanusi ,  Ralf Matthias Bendlin ,  Anthony Edet Ekpenyong

IPC: H04J11/00

CPC classification number: H04J11/0053 ,  H04J11/0036

Abstract: Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.

公开(公告)号：US11916657B2

公开(公告)日：2024-02-27

申请号：US17493199

申请日：2021-10-04

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Eko N. Onggosanusi ,  Ralf Matthias Bendlin ,  Anthony Edet Ekpenyong

IPC: H04J11/00

CPC classification number: H04J11/0053 ,  H04J11/0036

Abstract: Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.

公开(公告)号：US20240015058A1

公开(公告)日：2024-01-11

申请号：US18372667

申请日：2023-09-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomoki MURAKAMI ,  Yusuke ASAI ,  Riichi KUDO ,  Koichi ISHIHARA ,  Masato MIZOGUCHI ,  Takeo ICHIKAWA

IPC: H04L27/26 ,  H04J11/00 ,  H04L5/00 ,  H04W28/16 ,  H04B7/024 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0456 ,  H04W88/08

CPC classification number: H04L27/2613 ,  H04J11/0053 ,  H04L5/005 ,  H04W28/16 ,  H04B7/024 ,  H04B7/0617 ,  H04B7/0452 ,  H04B7/0456 ,  H04W88/08 ,  H04L5/0035 ,  H04L27/2626

Abstract: Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

公开(公告)号：US11804997B2

公开(公告)日：2023-10-31

申请号：US17978257

申请日：2022-11-01

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomoki Murakami ,  Yusuke Asai ,  Riichi Kudo ,  Koichi Ishihara ,  Masato Mizoguchi ,  Takeo Ichikawa

IPC: H04L27/26 ,  H04J11/00 ,  H04L5/00 ,  H04W28/16 ,  H04B7/024 ,  H04B7/06 ,  H04B7/0452 ,  H04B7/0456 ,  H04W88/08

CPC classification number: H04L27/2613 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04J11/0053 ,  H04L5/005 ,  H04W28/16 ,  H04W88/08 ,  H04L5/0035 ,  H04L27/2626

Abstract: Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

公开(公告)号：US20230254858A1

公开(公告)日：2023-08-10

申请号：US18134917

申请日：2023-04-14

Applicant: NEC Corporation

Inventor： Le LIU ,  Yoshikazu KAKURA ,  Naoto ISHII ,  Takamichi INOUE

IPC: H04W72/1273 ,  H04J11/00 ,  H04L5/00 ,  H04W72/12 ,  H04W72/23 ,  H04B7/024 ,  H04W48/12

CPC classification number: H04W72/1273 ,  H04J11/0053 ,  H04L5/0053 ,  H04L5/0035 ,  H04W72/12 ,  H04W72/23 ,  H04B7/024 ,  H04W48/12 ,  H04W84/042

Abstract: A radio communication system includes: a plurality of cells having different scrambling sequences, respectively, wherein at least two cells communicate with at lease two user terminals connected to different serving cells; and a controller which controls the plurality of cells and provides a single scrambling sequence to said at least two cells and said at least two user terminals for control signal transmission and reception.

公开(公告)号：US11671963B2

公开(公告)日：2023-06-06

申请号：US17471627

申请日：2021-09-10

Applicant: NEC Corporation

Inventor： Le Liu ,  Yoshikazu Kakura ,  Naoto Ishii ,  Takamichi Inoue

IPC: H04W72/1273 ,  H04J11/00 ,  H04L5/00 ,  H04B7/024 ,  H04W48/12 ,  H04W84/04 ,  H04W72/12 ,  H04W72/23

CPC classification number: H04W72/1273 ,  H04B7/024 ,  H04J11/0053 ,  H04L5/0035 ,  H04L5/0053 ,  H04W48/12 ,  H04W72/12 ,  H04W72/23 ,  H04W84/042

Abstract: A radio communication system includes: a plurality of cells having different scrambling sequences, respectively, wherein at least two cells communicate with at lease two user terminals connected to different serving cells; and a controller which controls the plurality of cells and provides a single scrambling sequence to said at least two cells and said at least two user terminals for control signal transmission and reception.

公开(公告)号：US20190215853A1

公开(公告)日：2019-07-11

申请号：US16358288

申请日：2019-03-19

Applicant: NEC Corporation

Inventor： Le LIU ,  Yoshikazu KAKURA ,  Naoto ISHII ,  Takamichi INOUE

IPC: H04W72/12 ,  H04L5/00 ,  H04J11/00 ,  H04B7/024 ,  H04W48/12

CPC classification number: H04W72/1273 ,  H04B7/024 ,  H04J11/0053 ,  H04L5/0035 ,  H04L5/0053 ,  H04W48/12 ,  H04W72/1205 ,  H04W72/1289 ,  H04W84/042

Abstract: A radio communication system includes: a plurality of cells having different scrambling sequences, respectively, wherein at least two cells communicate with at lease two user terminals connected to different serving cells; and a controller which controls the plurality of cells and provides a single scrambling sequence to said at least two cells and said at least two user terminals for control signal transmission and reception.

公开(公告)号：US20190109662A1

公开(公告)日：2019-04-11

申请号：US16215181

申请日：2018-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Amine Maaref ,  Jianglei Ma ,  Peiying Zhu

IPC: H04J11/00 ,  H04W76/14 ,  H04W72/12

CPC classification number: H04J11/0026 ,  H04J11/0053 ,  H04W72/1226 ,  H04W72/1278 ,  H04W76/14 ,  H04W88/04

Abstract: Soft information for achieving interference cancellation in downlink transmissions can be communicated over device-to-device (D2D) links, thereby allowing paired user equipments (UEs) to receive downlink transmissions over the same radio resources. More specifically, paired UEs that receive transmissions over the same time-frequency resources may exchange soft or hard information over D2D links in order to facilitate interference cancellation. The D2D links may be unidirectional or bidirectional, and may be established over in-band or out-of-band resources. Paired UEs may be in the same or different cells, and may receive their respective transmissions from the same or different transmit point. UEs may be paired with one another based on various criteria, e.g., interference cancellation capabilities, scheduling metrics, etc.

公开(公告)号：US20180270718A1

公开(公告)日：2018-09-20

申请号：US15552942

申请日：2017-06-07

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Min Wang ,  Jan Christoffersson ,  Mårten Ericson ,  Hans Hannu

IPC: H04W36/02 ,  H04W28/06 ,  H04W36/18 ,  H04W36/00 ,  H04L12/801

CPC classification number: H04W36/023 ,  H04J11/0053 ,  H04L1/08 ,  H04L1/1874 ,  H04L47/34 ,  H04L2001/0093 ,  H04W28/065 ,  H04W36/0022 ,  H04W36/0069 ,  H04W36/18 ,  H04W92/20

Abstract: There is provided a method of operating at least one network unit in a wireless communication system, wherein the wireless communication system comprises a first network unit and a second network unit that are both connected to a third network unit using a first connection, between the first network unit and the third network unit, and using a second connection, between the second network unit and the third network unit, wherein packets comprising the same information are transmitted over both the first connection and the second connection. The method comprises the first network unit receiving information from the third network unit indicating packets received by the third network unit from the first network unit over the first connection, and transmitting an indication to the second network unit enabling removal of packets from one or more transmission buffers of the second network unit corresponding to the indicated packets received by the third network unit from the first network unit over the first connection.