公开(公告)号：US20250113278A1

公开(公告)日：2025-04-03

申请号：US18834515

申请日：2022-02-03

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Tero HENTTONEN ,  Guillaume DECARREAU

IPC: H04W36/30 ,  H04B17/318 ,  H04W24/08 ,  H04W24/10

Abstract: The present disclosure relates to techniques that enable an efficient Radio Link Monitoring (RLM) for a User Equipment (UE) in a multi Transmitter Receiver Point (mTRP) scenario. For this purpose, a serving cell of a serving Distributed Unit (DU) of a disaggregated network node and at least one non-serving (or stand-by) cell of a non-serving DU of the disaggregated network node are configured fora UE. Then, the UE is informed of beams used for the serving and non-serving cells. The UE performs the RLM over the serving cell by using the beams of the serving cell. Whenever there is an Radio Link (RL) quality degradation (which may potentially lead to an RL Failure (RLF)) detected in the serving cell, the UE may initiate switching of the RLM from the serving cell to one of the non-serving cells by transmitting a corresponding request to the serving DU.

公开(公告)号：US20250106724A1

公开(公告)日：2025-03-27

申请号：US18291382

申请日：2022-07-19

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Ahmad AWADA ,  Amaanat ALI ,  Tero HENTTONEN

IPC: H04W36/30 ,  H04B17/318 ,  H04W24/10

Abstract: Improved techniques of handover involving dual connectivity configuration with CHO include configuring a UE with a conditional fallback configuration (CFC) linked to M-RLF event at the source MN. Specifically, the MN prepares a fallback configuration along with the CHO configuration for the UE. This fallback configuration is provided to the UE as a conditional configuration, but this is not linked to measurement-event but rather to a radio link failure event. The condition is linked to MCG-RLF along with additional measurement criteria.

公开(公告)号：US20240334291A1

公开(公告)日：2024-10-03

申请号：US18580027

申请日：2022-07-04

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Ahmad AWADA ,  Amaanat ALI ,  Faranaz SABOURI-SICHANI

IPC: H04W36/30 ,  H04W36/00 ,  H04W74/00

CPC classification number: H04W36/305 ,  H04W36/00692 ,  H04W74/004

Abstract: A method includes receiving (610), by a user device that has been configured for dual connectivity, preconfiguration information including information indicating a signaling radio bearer for a second network node to enable the user device to report failure of a first random access procedure between the user device and a first network node, via a second random access procedure with the second network node regardless of whether a connection has been established between the user device and the first network node: transmitting (640), by the user device to the second network node via the indicated signaling radio bearer, a radio link failure report indicating a failure of the first random access procedure with the first network node; and receiving (650) a message indicating an action to be performed by the user device in response to the failure of the first random access procedure.

公开(公告)号：US20240323707A1

公开(公告)日：2024-09-26

申请号：US18575276

申请日：2022-06-15

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Andres ARJONA ,  Ömer BULAKCI

IPC: H04W16/32 ,  H04W92/20

CPC classification number: H04W16/32 ,  H04W92/20

Abstract: According to an example aspect of the present invention, there is provided an apparatus configured to perform as a base station central unit control plane node, setup, into an inactive state, a protocol connection with at least one client node, wherein the apparatus does not control or actively serve the said client node while the protocol connection is in the inactive state, synchronize, while the protocol connection is in the inactive state, at least one control plane user equipment context of the base station from a second base station central unit control plane node which controls the at least one client node, and responsive to receiving an instruction from outside the apparatus, switch the protocol connection into an active state and begin controlling the at least one client node. The apparatus may serve user equipments directly or indirectly.

公开(公告)号：US20230403756A1

公开(公告)日：2023-12-14

申请号：US18321409

申请日：2023-05-22

Applicant: Nokia Technologies Oy

Inventor： Ece OZTURK ,  Subramanya CHANDRASHEKAR ,  Ömer BULAKCI ,  Devaki CHANDRAMOULI

IPC: H04W76/27 ,  H04W76/30

CPC classification number: H04W76/27 ,  H04W76/30

Abstract: Techniques are provided for enabling user equipment (UE) context retrieval in radio resource control RRC inactive status with a shared radio access network (RAN) database (DB) within a distributed database architecture. A version indicator in an inactive Radio Network Temporary Identifier (I-RNTI) is populated by the UE to indicate one or more I-RNTI versions, defined herein, and indicates the type of data in the remainder of the I-RNTI used for communicating the location of a RAN DB that stores the UE context, to a target network node. The target network node then uses the data in the I-RNTI, further dependent on the I-RNTI version, to retrieve the UE content from the RAN database. Certain embodiments utilize a RAN DB Area (RDBA) and/or RAN DB Set Area (RDSA), and certain embodiments utilize a network node set ID.

公开(公告)号：US20220070958A1

公开(公告)日：2022-03-03

申请号：US17412122

申请日：2021-08-25

Applicant: Nokia Technologies Oy

Inventor： Ahlem KHLASS ,  Daniela LASELVA ,  Subramanya CHANDRASHEKAR

IPC: H04W76/19 ,  H04W76/27 ,  H04W8/02 ,  H04W8/18

Abstract: Systems, methods, apparatuses, and computer program products for user equipment context relocation at radio access network notification area edge are provided.

公开(公告)号：US20250119810A1

公开(公告)日：2025-04-10

申请号：US18294860

申请日：2022-06-20

Applicant: Nokia Technologies Oy

Inventor： Halit Murat GÜRSU ,  Alperen GUNDOGAN ,  Ahmad AWADA ,  Subramanya CHANDRASHEKAR ,  Panagiotis SPAPIS

IPC: H04W36/30 ,  H04W76/15

Abstract: An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause a terminal device to detect a failure, related to a serving cell and to transmit a first indication characterizing the failure to a network node associated with the assisting cell.

公开(公告)号：US20250106922A1

公开(公告)日：2025-03-27

申请号：US18730838

申请日：2023-01-13

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Tero HENTTONEN ,  Ahmad AWADA ,  Panagiotis SPAPIS ,  Amaanat ALI

IPC: H04W76/16 ,  H04W24/10 ,  H04W72/23

Abstract: An apparatus includes circuitry configured to transmit downlink data to a user equipment for at least one serving cell and at least one assisting cell; receive uplink data from the user equipment; wherein the serving cell is hosted with a serving distributed node, and the assisting cell hosted with an assisting distributed node; transmit control plane signaling, to configure and manage inter distributed unit multi transmission reception point operation, from the serving node to the assisting node using a control plane node, and transmit control plane signaling from the assisting node to the serving node using the control plane node; and transmit user plane data from the serving node to the assisting node using a user plane node for downlink multi transmission reception point operation, and transmit user plane data from the assisting node to the serving node using the user plane node for uplink multi transmission reception point operation.

公开(公告)号：US20250106836A1

公开(公告)日：2025-03-27

申请号：US18730851

申请日：2022-01-24

Applicant: Nokia Technologies Oy

Inventor： Tero HENTTONEN ,  Subramanya CHANDRASHEKAR ,  Amaanat ALI ,  Lars DALSGAARD

IPC: H04W72/1263 ,  H04W36/00

Abstract: An apparatus may receive, from a source network node, a configuration of a channel bandwidth and a first bandwidth part for receiving data from the source network node, for example during a handover from the source network node to a target network node, and a configuration of a second bandwidth part for receiving data from the target network node. The apparatus may communicate data with the source network node and the target network node with a bandwidth including the first bandwidth part and the second bandwidth part using same protocol stack.

公开(公告)号：US20250008363A1

公开(公告)日：2025-01-02

申请号：US18707638

申请日：2022-06-14

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Tero HENTTONEN ,  Karri Markus RANTA-AHO

IPC: H04W24/10 ,  H04W88/08

Abstract: An apparatus configured to: receive a first measurement and reporting configuration for at least one first cell of an active set and a second measurement and reporting configuration for at least one second cell of a configured set, wherein the at least one second cell is a target cell and not part of the active set; measure and report the at least one first cell based on the first measurement and reporting configuration; abstain from measuring and reporting the at least one second cell based on the second measurement and reporting configuration; send an indication that an activation condition is met for the at least one second cell; add the at least one second cell to the active set based on a confirmation indication; and measure and report the at least one second cell based on the second measurement and reporting configuration.