公开(公告)号：US20220272759A1

公开(公告)日：2022-08-25

申请号：US17625858

申请日：2021-02-05

Applicant: NEC Corporation

Inventor： Maxime GRAU ,  Chadi KHIRALLAH ,  Yuhua CHEN ,  Neeraj GUPTA

IPC: H04W74/08

Abstract: A system is disclosed in which an item of user equipment (UE) obtains a reference signal received power (RSRP) threshold value for transmitting a random access message (MsgA) comprising both a preamble part and a Physical Uplink Shared Channel (PUSCH) transmission part. The UE obtains information identifying at least one respective offset associated with at least one priority level, and determines a type of random access procedure (two-step or legacy random access procedure) to be performed based on an RSRP measured by the UE, the RSRP threshold value, and a priority level associated with the UE.

公开(公告)号：US20210119727A1

公开(公告)日：2021-04-22

申请号：US17114011

申请日：2020-12-07

Applicant: NEC Corporation

Inventor： Yuhua CHEN ,  Yassin Aden AWAD ,  Robert ARNOTT

IPC: H04L1/00 ,  H04W48/10 ,  H04W92/10 ,  H04L1/08 ,  H04W76/14 ,  H04W48/12

Abstract: A communication system is described in which system information is transmitted to communication devices, by a communication apparatus of the system, in system information blocks, in accordance with a system information block transmission scheme. The communication apparatus configures at least one system information block to include control information indicating how the system information blocks will be transmitted.

公开(公告)号：US20200383016A1

公开(公告)日：2020-12-03

申请号：US16960478

申请日：2018-12-28

Applicant: NEC CORPORATION

Inventor： Yuhua CHEN ,  Neeraj GUPTA ,  Jagdeep Ahluwalia SINGH ,  Robert ARNOTT

IPC: H04W36/00 ,  H04W48/16

Abstract: A communication system is disclosed which a base station configures a user equipment (UE) to carry out measurements of signals transmitted in a plurality of neighbour cells and to transmit a measurement report. The UE performs the signal measurements and transmits the measurement report, which comprises the measurement results for at least one neighbour cell and further includes, for at least one reported neighbour cell, an associated unique cell identifier together with the corresponding measurement. The base station identifies a corresponding neighbour cell, from among a plurality of neighbour cells, based on the reported unique cell identifier, and triggers a communication procedure involving the UE and that neighbour cell.

公开(公告)号：US20200178204A1

公开(公告)日：2020-06-04

申请号：US16784026

申请日：2020-02-06

Applicant: NEC CORPORATION

Inventor： Yuhua CHEN ,  Chadi KHIRALLAH ,  Neeraj GUPTA

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

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：US20190297596A1

公开(公告)日：2019-09-26

申请号：US16441250

申请日：2019-06-14

Applicant: NEC CORPORATION

Inventor： Yuhua CHEN

IPC: H04W68/02 ,  H04W72/12 ,  H04W72/04 ,  H04W4/70

Abstract: A communication system is disclosed in which a base station receives, from a core network entity, a paging request for paging an MTC device. The base station determines a paging occasion for sending to said MTC device paging related information, wherein the paging occasion is defined such that it identifies a plurality of subframes in which the paging related information can be sent and repeated. The base station sends (and repeats, as appropriate) the paging related information in the plurality of subframes identified by the paging occasion.

公开(公告)号：US20190223147A1

公开(公告)日：2019-07-18

申请号：US16338359

申请日：2017-09-13

Applicant: NEC CORPORATION

Inventor： Yuhua CHEN ,  Sadafuku HAYASHI ,  Hisashi FUTAKI

IPC: H04W68/00 ,  H04W76/28 ,  H04W68/02 ,  H04W8/08 ,  H04W4/029

CPC classification number: H04W68/005 ,  H04W4/029 ,  H04W8/08 ,  H04W68/02 ,  H04W76/28

Abstract: A communication system is disclosed in which an MME receives an indication that a base station of a tracking area supports extended discontinuous reception, eDRX. The MME determines that paging is required for a communication device and that the communication device may be located in a cell of a base station of the tracking area. The MME triggers paging of the communication device in accordance with discontinuous reception, DRX, information that is not specific to eDRX via base stations that support eDRX and triggered paging of the communication device in accordance with eDRX specific information via base stations which support eDRX has been received.

公开(公告)号：US20190182723A1

公开(公告)日：2019-06-13

申请号：US16324756

申请日：2017-08-10

Applicant: NEC Corporation

Inventor： Vivek SHARMA ,  Yuhua CHEN ,  Neeraj GUPTA

IPC: H04W36/00 ,  H04W36/04 ,  H04W36/18

Abstract: A communication system comprises a plurality of cells, each cell being associated with a respective serving area of TUPF. A base station controls a communication session of a communication device via the base station and a TUPF. Mobility of the communication device between a source cell and a target cell is performed as follows: when the communication session uses a nomadic IP address and the target cell is associated with the same TUPF serving area as the source cell but the base station is unable to determine the TUPF serving area of the target cell, the base station initiates a redirection procedure rather than a handover procedure. When performing the redirection procedure, the communication connection for the communication session via the source cell is broken before the target cell has been prepared to receive communication for the communication session of the communication device.

公开(公告)号：US20250142360A1

公开(公告)日：2025-05-01

申请号：US18835447

申请日：2023-03-06

Applicant: NEC Corporation

Inventor： Tingyu XIN ,  Yuhua CHEN ,  Hisashi FUTAKI

IPC: H04W24/02 ,  H04W36/08 ,  H04W56/00 ,  H04W76/20 ,  H04W84/06

Abstract: The present disclosure relates to user equipment, access network node, and a method performed by them. A method performed by a user equipment (UE) for communicating via a non-terrestrial network is disclosed. The method comprises receive configuration information identifying preconfigured uplink resources for use by the UE in a Radio Resource Control (RRC) idle state; verify whether or not the configuration information is still valid; and determine whether to transmit data using the preconfigured uplink resources in accordance with the verifying.

公开(公告)号：US20240214859A1

公开(公告)日：2024-06-27

申请号：US18288476

申请日：2022-04-27

Applicant: NEC Corporation

Inventor： Yuhua CHEN ,  Neeraj GUPTA

IPC: H04W28/02 ,  H04W64/00

CPC classification number: H04W28/0226 ,  H04W64/006

Abstract: A method performed by a first network entity including RAN equipment (5) in a communication system is disclosed. The method includes obtaining information relating to a mobility state of a UE (3), determining a mobility specific configuration for the UE (3) based on the mobility state, and providing configuration information for configuring the UE (3) with the mobility specific configuration.

公开(公告)号：US20230328769A1

公开(公告)日：2023-10-12

申请号：US18203373

申请日：2023-05-30

Applicant: NEC Corporation

Inventor： Chadi KHIRALLAH ,  Yassin Aden AWAD ,  Yuhua CHEN ,  Robert ARNOTT

IPC: H04L49/25 ,  H04W72/23 ,  H04W72/542

CPC classification number: H04W72/542 ,  H04L49/25 ,  H04W72/23

Abstract: A communication system is disclosed in which a base station manages the transmission of on-demand system information to optimise the trade-off between the additional signalling overhead associated with on-demand transmission and the resource usage inefficiencies associated with the sometimes unnecessary transmission of system information on a periodic basis. The base station manages switching from on-demand transmission to periodic transmission, and vice versa, based on one or more utilisation thresholds.