公开(公告)号：US20240236793A1

公开(公告)日：2024-07-11

申请号：US18559055

申请日：2022-05-04

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Guillaume DECARREAU ,  Tero HENTTONEN ,  Andres ARJONA

IPC: H04W36/06 ,  H04W36/00 ,  H04W36/32 ,  H04W88/08

CPC classification number: H04W36/06 ,  H04W36/0058 ,  H04W36/0061 ,  H04W36/324 ,  H04W88/085

Abstract: Improved techniques of intra and inter distributed unit mobility include determining, by a user equipment served by a source cell, whether a target cell belongs to the same distributed unit as the source cell based on information sent by the central unit (control plane) after a connection with the network node has been established. The information sent by the network node includes, for each cell, a group identifier identifying the distributed unit with which that cell is associated. When measurement data provided by the user equipment indicates readiness for a serving cell change to a target cell, the user equipment uses the group identifier to determine whether the target cell belongs to the same distributed unit as the source cell (intra-distributed unit mobility scenario) or a different distributed unit as the source cell (inter-distributed unit mobility scenario).

公开(公告)号：US20240172300A1

公开(公告)日：2024-05-23

申请号：US18551113

申请日：2022-03-08

Applicant: Nokia Technologies Oy

Inventor： Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Philippe GODIN ,  Daniela LASELVA

IPC: H04W76/12 ,  H04W76/27

CPC classification number: H04W76/12 ,  H04W76/27

Abstract: The present subject matter relates to a user equipment for transmission of a data, the user equipment being served by a cell of a base station, the user equipment being in an inactive state, the user equipment comprising means being configured for: in response to determining that a condition is fulfilled, forming a data packet comprising the data and a first identity of the user equipment; otherwise, forming a data packet comprising the data and a second identity of the user equipment; wherein the condition comprises at least that the cell was a last serving cell of the user equipment before the user equipment transitioned to the inactive state; wherein the first identity is different from the second identity; transmitting the data packet to the base station.

公开(公告)号：US20240023176A1

公开(公告)日：2024-01-18

申请号：US18332342

申请日：2023-06-09

Applicant: Nokia Technologies Oy

Inventor： Sankaran BALASUBRAMANIAM ,  Subramanya CHANDRASHEKAR ,  Raghuram Reddy KRISHNAMURTHY ,  Suresh P NAIR

IPC: H04W76/12 ,  H04W76/11 ,  H04W72/1273 ,  H04W12/041

CPC classification number: H04W76/12 ,  H04W76/11 ,  H04W72/1273 ,  H04W12/041

Abstract: Systems, methods, apparatuses, and computer program products for a method of mobility between distributed units with a local control plane are provided. For example, a method can include detecting, at a target distributed unit, a handover based on an indication from a source distributed unit after a handover command has been sent to a user equipment to hand over from the source distributed unit to the target distributed unit. The method can also include sending, from the target distributed unit to a central unit user plane, a data transmission resume notification, to trigger to the central unit user plane to resume downlink data transmission toward the target distributed unit. The downlink data transmission was previously suspended by instructions from a source distributed unit to the central unit user plane when the handover was initiated from the source distributed unit to the target distributed unit.

公开(公告)号：US20230413371A1

公开(公告)日：2023-12-21

申请号：US18033378

申请日：2021-07-07

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Philippe GODIN ,  Alberto MARTÍNEZ-ALBA ,  Daniela LASELVA ,  Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Rakash SIVASIVA GANESAN

IPC: H04W76/27 ,  H04W48/16 ,  H04W12/106 ,  H04W12/04

CPC classification number: H04W76/27 ,  H04W12/04 ,  H04W12/106 ,  H04W48/16

Abstract: For performing a small data transmission triggered in an inactive state of a user equipment (S701, S703), a first transmission method or a second transmission method is selected at least based on a cell of a cellular communication system in which the small data transmission is to be performed by the user equipment (S705). Then the small data transmission is performed using the selected first or second transmission method (S707).

公开(公告)号：US20230269642A1

公开(公告)日：2023-08-24

申请号：US18166908

申请日：2023-02-09

Applicant: Nokia Technologies Oy

Inventor： Rajesh Babu NATARAJAN ,  Subramanya CHANDRASHEKAR ,  Srinivasan SELVAGANAPATHY ,  Saurabh KHARE

IPC: H04W36/08 ,  H04W36/00

CPC classification number: H04W36/08 ,  H04W36/0033 ,  H04W84/042

Abstract: There is provided an apparatus comprising determining, by a first access and mobility management function in a first network, that handover of a user equipment from the first access and mobility management function to a second access and mobility management function in a second network is required; sending, to the second access and mobility management function, a context update request for the user equipment, wherein the context update request comprises an indication that the source and target access node are the same; and receiving, from the second access and mobility management function, a context update response based on the context update request, the context update response comprising the indication that the source and target access node are the same.

公开(公告)号：US20220124555A1

公开(公告)日：2022-04-21

申请号：US17485975

申请日：2021-09-27

Applicant: Nokia Technologies Oy

Inventor： Philippe GODIN ,  Subramanya CHANDRASHEKAR ,  Daniela LASELVA

IPC: H04W28/06 ,  H04L12/46

Abstract: Systems, methods, apparatuses, and computer program products for inter-gNB small data transmission (SDT) routing at a radio access network (RAN). A method may include transmitting an initial request message from a first element in a first network node, to a second element in the first network node to obtain context information. The method may also include receiving, at the first element, a context setup request message based on the context information containing a transport layer information of a third element of a second network node and context information of a user equipment in the second network node. The method may further include processing a data packet according to the received context information. In addition, the method may include forwarding the data packet to the third element of the second network node according to the received transport layer information.