公开(公告)号：US12149939B2

公开(公告)日：2024-11-19

申请号：US17442841

申请日：2020-03-24

Applicant: NEC Corporation

Inventor： Priya Darshini ,  Chadi Khirallah ,  Sadafuku Hayashi ,  Jagdeep Ahluwalia Singh ,  Neeraj Gupta

IPC: H04W12/106 ,  H04L5/00 ,  H04W72/21 ,  H04W76/14

Abstract: A communication system is disclosed in which a base station apparatus obtains information identifying a total integrity protected uplink data rate for a user equipment (UE), allocates a portion of the total integrity protected uplink data rate to a secondary node (SN), and notifies the UE about the portion allocated to the SN.

公开(公告)号：US20240171360A1

公开(公告)日：2024-05-23

申请号：US18429793

申请日：2024-02-01

Applicant: NEC Corporation

Inventor： Yassin Aden AWAD ,  Chadi Khirallah ,  Jagdeep Singh Ahluwalia ,  Robert Arnott

IPC: H04L5/00 ,  H04B7/0408 ,  H04W28/20 ,  H04W72/0453 ,  H04W72/23

CPC classification number: H04L5/0087 ,  H04B7/0408 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0094 ,  H04W72/0453 ,  H04W72/23 ,  H04L5/0012 ,  H04W28/20

Abstract: A communication system is disclosed in which a communication device and a base station initially communicate using a first bandwidth. The communication device monitors for control data transmitted, by the base station, using a first control resource set conveyed in the first bandwidth. The communication device and the base station switch to using a second bandwidth, wherein the second bandwidth is different to the first bandwidth, and the communication device monitors for control data transmitted, by the base station, using a second control resource set that is conveyed in the second bandwidth.

公开(公告)号：US12127256B2

公开(公告)日：2024-10-22

申请号：US17626572

申请日：2021-07-30

Applicant: NEC Corporation

Inventor： Chadi Khirallah ,  Sadafuku Hayashi

IPC: H04W74/0816 ,  H04W76/30

CPC classification number: H04W74/0816 ,  H04W76/30

Abstract: A communication system is disclosed in which a base station performs Listen-Before-Talk (LBT) communication with an item of user equipment (UE) via at least one cell. When the base station of the UE detects a failure associated with the LBT communication in at least one cell, the base station transmits a signalling message to another node (e.g., a central unit, a master node, a secondary node, or a core network node), the signalling message comprising information indicating that LBT failure has been detected. The information is used by the other node in managing the LBT communication with the UE (e.g., releasing resources, deactivating cells, etc.).

公开(公告)号：US11496257B2

公开(公告)日：2022-11-08

申请号：US17044389

申请日：2019-04-03

Applicant: NEC CORPORATION

Inventor： Chadi Khirallah ,  Yassin Aden Awad ,  Sadafuku Hayashi ,  Tao Guo ,  Robert Arnott

IPC: H04L5/00 ,  H04W72/04

Abstract: A communication system is disclosed in which an NR radio access network (RAN) node identifies resources, that the NR RAN node is to use for transmissions, for protection from interference from another RAN node. The NR RAN node sends, to the other RAN node, information indicating the identified resources for protection from interference. The information indicating the identified resources comprises a list of parameters, typically including resource bitmaps, based on which the other RAN node is able to determine the resources for protection from interference.

公开(公告)号：US11129131B2

公开(公告)日：2021-09-21

申请号：US16784026

申请日：2020-02-06

Applicant: NEC CORPORATION

Inventor： Yuhua Chen ,  Chadi Khirallah ,  Neeraj Gupta

IPC: H04W68/00 ,  H04W4/029 ,  H04W76/27 ,  H04W8/08 ,  H04W48/16 ,  H04W60/00

Abstract: A communication system is disclosed in which a base station receives, from at least one further base station, information identifying at least one respective tracking area associated with at least one cell of each further base station. The base station also receives, from a core network, information identifying a registration area for a user equipment (UE). The base station defines, based on the received information identifying at least one respective tracking area and the received information identifying a registration area, a radio access network (RAN) based notification area for the UE.

公开(公告)号：US11825442B2

公开(公告)日：2023-11-21

申请号：US17399689

申请日：2021-08-11

Applicant: NEC CORPORATION

Inventor： Yuhua Chen ,  Chadi Khirallah ,  Neeraj Gupta

IPC: H04W68/00 ,  H04W4/029 ,  H04W76/27 ,  H04W8/08 ,  H04W48/16 ,  H04W60/00

CPC classification number: H04W68/005 ,  H04W4/029 ,  H04W8/08 ,  H04W48/16 ,  H04W60/00 ,  H04W76/27

Abstract: A communication system is disclosed in which a base station receives, from at least one further base station, information identifying at least one respective tracking area associated with at least one cell of each further base station. The base station also receives, from a core network, information identifying a registration area for a user equipment (UE). The base station defines, based on the received information identifying at least one respective tracking area and the received information identifying a registration area, a radio access network (RAN) based notification area for the UE.

公开(公告)号：US10856336B2

公开(公告)日：2020-12-01

申请号：US15750987

申请日：2016-09-07

Applicant: NEC Corporation

Inventor： Chadi Khirallah ,  Vivek Sharma ,  Yassin Aden Awad ,  Robert Arnott

IPC: H04W74/08 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04W72/14 ,  H04W74/00 ,  H04W72/12 ,  H04W16/14

Abstract: A communication system is disclosed in which a communication device communicates with communication apparatus that operates a cell within which the communication device is located. The cell is operated as a licensed assisted access (LAA) cell and has an associated physical uplink control channel (PUCCH). The communication device has a controller that is adapted to: generate a control signal for transmitting to said communication apparatus; perform a clear channel assessment (CCA) on said PUCCH before the control signal is transmitted; and block transmission of the control signal on said PUCCH when said CCA indicates that said channel is not clear. The communication device is further adapted, when said controller has not blocked said transmission of the control signal, to transmit the control signal to said communication apparatus in said PUCCH.

公开(公告)号：US10798750B2

公开(公告)日：2020-10-06

申请号：US15750987

申请日：2016-09-07

Applicant: NEC Corporation

Inventor： Chadi Khirallah ,  Vivek Sharma ,  Yassin Aden Awad ,  Robert Arnott

IPC: H04W74/08 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04W72/14 ,  H04W74/00 ,  H04W72/12 ,  H04W16/14

Abstract: A communication system is disclosed in which a communication device communicates with communication apparatus that operates a cell within which the communication device is located. The cell is operated as a licensed assisted access (LAA) cell and has an associated physical uplink control channel (PUCCH). The communication device has a controller that is adapted to: generate a control signal for transmitting to said communication apparatus; perform a clear channel assessment (CCA) on said PUCCH before the control signal is transmitted; and block transmission of the control signal on said PUCCH when said CCA indicates that said channel is not clear. The communication device is further adapted, when said controller has not blocked said transmission of the control signal, to transmit the control signal to said communication apparatus in said PUCCH.

公开(公告)号：US11937319B2

公开(公告)日：2024-03-19

申请号：US17252057

申请日：2019-06-14

Applicant: NEC CORPORATION

Inventor： Yuhua Chen ,  Sadafuku Hayashi ,  Hisashi Futaki ,  Jagdeep Ahluwalia Singh ,  Neeraj Gupta ,  Chadi Khirallah

IPC: H04B1/00 ,  H04W76/18

CPC classification number: H04W76/18

Abstract: A communication system is disclosed in which a distributed base station apparatus comprises a central unit for control plane signalling (CU-CP), at least one a central unit for user plane signalling (CU-UP), and at least one distributed unit. The CU-CP obtains information indicating whether a security configuration is supported by a CU-UP and selects a security configuration for an item of user equipment (UE) based on the obtained information.

公开(公告)号：US11936592B2

公开(公告)日：2024-03-19

申请号：US18119050

申请日：2023-03-08

Applicant: NEC Corporation

Inventor： Yassin Aden Awad ,  Chadi Khirallah ,  Jagdeep Singh Ahluwalia ,  Robert Arnott

IPC: H04L5/00 ,  H04B7/0408 ,  H04W72/0453 ,  H04W72/23 ,  H04W28/20

CPC classification number: H04L5/0087 ,  H04B7/0408 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0094 ,  H04W72/0453 ,  H04W72/23 ,  H04L5/0012 ,  H04W28/20

Abstract: A communication system is disclosed in which a communication device and a base station initially communicate using a first bandwidth. The communication device monitors for control data transmitted, by the base station, using a first control resource set conveyed in the first bandwidth. The communication device and the base station switch to using a second bandwidth, wherein the second bandwidth is different to the first bandwidth, and the communication device monitors for control data transmitted, by the base station, using a second control resource set that is conveyed in the second bandwidth.