公开(公告)号：US20170238247A1

公开(公告)日：2017-08-17

申请号：US15514697

申请日：2014-09-30

Applicant: Nokia Solutions and Networks Oy

Inventor： Subramanya CHANDRASHEKAR ,  Hans Thomas HOEHNE ,  Irina-Mihaela BALAN ,  Richard WALDHAUSER ,  Güenther HORN ,  Dario Serafino TONESI

IPC: H04W48/20 ,  H04W24/08 ,  H04W24/10 ,  H04W76/04 ,  H04W48/18

CPC classification number: H04W48/20 ,  H04L61/6054 ,  H04W24/08 ,  H04W24/10 ,  H04W36/14 ,  H04W48/16 ,  H04W48/18 ,  H04W76/28 ,  H04W84/12 ,  H04W88/06

Abstract: A method and apparatus can be configured to notify that the apparatus has changed a network node upon which the apparatus is camped on. The apparatus changes from camping on a first network node to camping on a second network node. The apparatus is in idle mode while camping on the first and the second network node. The first network node and the second network node both belong to a first network. The notifying is performed when the apparatus maintains a session to a third network node of a second network. The notifying is not performed when the apparatus is not maintaining a session to the third network node of the second network.

公开(公告)号：US20240284541A1

公开(公告)日：2024-08-22

申请号：US18568351

申请日：2022-07-13

Applicant: Nokia Solutions and Networks Oy

Inventor： Ömer BULAKCI ,  Subramanya CHANDRASHEKAR ,  Ece OZTURK

IPC: H04W76/20 ,  H04W36/00 ,  H04W36/08 ,  H04W60/04

CPC classification number: H04W76/20 ,  H04W36/0033 ,  H04W36/08 ,  H04W60/04

Abstract: In some example embodiments, there may be provided a method comprising: receiving, from a first network node in a network via a service-based interface, an update request comprising at least one context information for at least one user equipment in the network and a context key, wherein the at least one user equipment is in a radio resource control connected state; storing or updating the at least one context information at the radio access network data storage function; receiving a retrieve request from a second network node in the network, wherein the retrieve request comprises the context key; retrieving the at least one context information for the at least one user equipment in response to the retrieve request from the second network node based at least on the context key; and sending the at least one context information to the second network node. Related systems, methods, and articles of manufacture are also disclosed.

公开(公告)号：US20240260122A1

公开(公告)日：2024-08-01

申请号：US18565953

申请日：2022-07-14

Applicant: Nokia Solutions and Networks Oy

Inventor： Ömer BULAKCI ,  Subramanya CHANDRASHEKAR ,  Ece OZTURK

IPC: H04W76/27 ,  H04W88/08

CPC classification number: H04W76/27 ,  H04W88/085

Abstract: In some example embodiments, there may be provided a data storage function for handling user equipment context information. In some example embodiments, there may be provided a method that includes receiving, from a first network node via a service-based interface, at least one context information for at least one user equipment in a radio resource control inactive state; storing and/or updating the at least one context information; receiving a retrieve request from a second network node via the service-based interface, wherein the retrieve request comprises a context key; retrieving the at least one context information for the at least one user equipment in response to the retrieve request based at least on the context key; and sending the at least one context information for the at least one user equipment to the second network node via the service-based interface. Related systems, methods, and articles of manufacture are also disclosed.

公开(公告)号：US20240049079A1

公开(公告)日：2024-02-08

申请号：US18258069

申请日：2021-10-22

Applicant: Nokia Solutions and Networks Oy

Inventor： Subramanya CHANDRASHEKAR ,  Jean-Michel PUGEAT ,  Raghuram Reddy KRISHNAMURTHY ,  Bruno LANDAIS

IPC: H04W36/02 ,  H04W36/08

CPC classification number: H04W36/023 ,  H04W36/08

Abstract: Various example embodiments relate to relate to network nodes (20A; 20B), methods and computer program products configured to hand over a communication link between a cell and user equipment (10) in a wireless communication network from a source cell (40A) to a target cell (40B; 40C). According to various, but not necessarily all, embodiments of the invention there is provided a node (20A), comprising: means configured to establish a communication link between a source cell (40A) and user equipment (10); means configured to transmit a series of data packets to the user equipment (10), each data packet comprising an associated sequence identifier; means to receive an acknowledgement of successful receipt of a data packet of the series by user equipment (10), the acknowledgement comprising an indication of the successfully received data packet sequence identifier; means configured to receive an indication of an identified handover target cell (40B; 40C); means configured to request handover of the user equipment (10) to the identified handover target cell (40B; 40C); means configured to receive an acknowledgement of handover request from the identified handover target cell (40B; 40C); and means to forward data packets to be transmitted to user equipment (10) to the identified target cell (40B; 40C), the forwarded data packets comprising the indication of associated sequence identifier and the most recent successfully received data packet sequence identifier. Also provided is a node (20B), comprising: means configured to receive a request for handover of user equipment (10) from a source cell (40A) to a target cell (40B; 40C); means configured to transmit an acknowledgement of handover request to the source cell (40A); and means to receive forwarded data packets forming a series of data packets to be transmitted to user equipment (10), the forwarded data packets comprising an indication of a sequence identifier associated with each forwarded data packet and an indication of a most recent successfully received data packet sequence identifier. Arrangements recognise that one way to mitigate some of the negative effects associated with early data forwarding, for example, the increased use of network memory and the risk of duplicate transmissions, is by providing a mechanism supported by a source (20A) and target node (20B) to allow a target access node (20B) to perform efficient data discarding.

公开(公告)号：US20180020386A1

公开(公告)日：2018-01-18

申请号：US15547268

申请日：2015-01-30

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Devaki CHANDRAMOULI ,  Subramanya CHANDRASHEKAR ,  Hans Thomas HOEHNE ,  Cinzia SARTORI ,  Woonhee HWANG

IPC: H04W36/14 ,  H04W36/32 ,  H04W36/00

CPC classification number: H04W36/14 ,  H04W36/0027 ,  H04W36/32

Abstract: Methods and devices for improvements in handover between different access networks which enable seamless services to be experienced by a terminal. An aspect encompasses a device, comprising a processor configured to provide control in a control plane for a terminal for access to a first access network and to a second access network, wherein a coverage of the second access network at least partly overlaps the coverage of the first access network, the terminal is capable of having access to the first access network with a first service and to the second access network with a second service in parallel, and access for the terminal to a respective access network is routed in a user plane via a respective distinct access network entity.