公开(公告)号：US20240381063A1

公开(公告)日：2024-11-14

申请号：US18292497

申请日：2022-07-29

Applicant: NEC Corporation

Inventor： Maxime GRAU ,  Yuhua Chen

IPC: H04W8/00 ,  H04W64/00 ,  H04W84/06

Abstract: A communication system is disclosed that comprises a non-terrestrial network portion and a terrestrial network portion. A base station serving the non-terrestrial network portion transmits information identifying at least one group of neighbour frequencies serving a predetermined area, wherein each group comprises at least one frequency or cell of the terrestrial network. A user equipment (UE) receives the information and scans frequencies identified by the received information for finding at least one neighbour cell in any group associated with the UE. The UE may also receive information identifying a location associated with the group of neighbour frequencies or cells, in which case the UE scans only those frequencies that correspond to the location of the UE.

公开(公告)号：US20240064819A1

公开(公告)日：2024-02-22

申请号：US18270815

申请日：2022-01-12

Applicant: NEC Corporation

Inventor： Maxime GRAU ,  Hisashi Futaki

IPC: H04W74/08 ,  H04W74/04

CPC classification number: H04W74/0833 ,  H04W74/04

Abstract: A method performed by apparatus for providing access to a communication network is disclosed. The method includes transmitting to at least one user equipment (UE) system information including random-access configuration information for configuring the UE to perform random-access procedures. The random-access configuration information includes a plurality of different physical random-access channel (PRACH) preamble formats that can be applied by the UE in a random-access procedure. The apparatus receives, from the UE, signalling for initiating a random-access procedure, the signalling including a random-access preamble having a one of the plurality of different PRACH preamble formats and communicates with the UE to continue and complete the random-access procedure initiated by the UE.

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：US20240314650A1

公开(公告)日：2024-09-19

申请号：US18579640

申请日：2022-06-30

Applicant: NEC Corporation

Inventor： Maxime GRAU ,  Neeraj GUPTA

IPC: H04W36/00 ,  H04W36/08 ,  H04W84/18

CPC classification number: H04W36/0061 ,  H04W36/08 ,  H04W84/18

Abstract: A system is disclosed in which a base station receives information indicating a cell category associated with a neighbour cell and stores the cell category information in a neighbour cell relation table. The base station May receive the cell category information from a UE, from an Access and Mobility Function, or from a base station operating the neighbour cell. The cell category information may indicate, amongst others, that the neighbour cell is a cell of a non-terrestrial network, a small cell, or an energy saving cell.

公开(公告)号：US20240172156A1

公开(公告)日：2024-05-23

申请号：US18284384

申请日：2022-03-17

Applicant: NEC Corporation

Inventor： Maxime GRAU ,  Neeraj GUPTA ,  Yuhua CHEN

IPC: H04W56/00 ,  H04B7/185

CPC classification number: H04W56/0045 ,  H04B7/1853 ,  H04W56/001

Abstract: A communication system is disclosed in which a user equipment (UE) communicate with a base station via a non-terrestrial network. The UE obtains information identifying a threshold associated with a timing advance value applicable for communications between the UE and the network node via the non-terrestrial network, acquires a timing advance value for said communications with the network node, and determines whether to transmit a timing advance report to the network node based on the timing advance value and the threshold.