公开(公告)号：US12010564B2

公开(公告)日：2024-06-11

申请号：US17396156

申请日：2021-08-06

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Anna Sillanpaa ,  Philippe Godin

IPC: H04W4/00 ,  H04W36/00 ,  H04W36/32 ,  H04W60/04 ,  H04W84/04

CPC classification number: H04W36/0022 ,  H04W36/0033 ,  H04W36/0072 ,  H04W36/32 ,  H04W60/04 ,  H04W84/042

Abstract: A first radio access network (RAN) accesses information indicating an availability status of an interface between an access and mobility management function (AMF) in a first wireless communication system and a mobility management entity (MME) in a second wireless communication system. The first RAN receives a trigger for a handover of a user equipment between the first RAN and a second RAN. The handover is selectively performed via the interface or a redirect via a network element shared by the first and second wireless communication systems based on the availability status. In some cases, the first RAN receive the information indicating the availability status prior to providing the request for the handover and stores the information in a database associated with the first RAN, which access the information from the database.

公开(公告)号：US11102683B2

公开(公告)日：2021-08-24

申请号：US16448524

申请日：2019-06-21

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Anna Sillanpaa ,  Philippe Godin

IPC: H04W4/00 ,  H04W36/00 ,  H04W36/32 ,  H04W60/04 ,  H04W84/04

Abstract: A first radio access network (RAN) accesses information indicating an availability status of an interface between an access and mobility management function (AMF) in a first wireless communication system and a mobility management entity (MME) in a second wireless communication system. The first RAN receives a trigger for a handover of a user equipment between the first RAN and a second RAN. The handover is selectively performed via the interface or a redirect via a network element shared by the first and second wireless communication systems based on the availability status. In some cases, the first RAN receive the information indicating the availability status prior to providing the request for the handover and stores the information in a database associated with the first RAN, which access the information from the database.

公开(公告)号：US20210051543A1

公开(公告)日：2021-02-18

申请号：US16990266

申请日：2020-08-11

Applicant: Nokia Solutions and Networks Oy

Inventor： Philippe Godin ,  György Wolfner

IPC: H04W36/00 ,  H04W36/08 ,  H04W76/11 ,  H04W36/32 ,  H04W8/08 ,  H04W48/16

Abstract: In accordance with an example embodiment of the present invention a source node decides to attempt to handover a user equipment to a target cell based at least in part on a comparison of a closed access group information of the user equipment and a stored closed access group information of a target cell associated with the target node. The source sends to the target node a handover message comprising an identifier of the target cell, receives from the target node a handover failure message comprising second closed access group information of the target cell which the source node uses to update the stored closed access group information of the target cell.

公开(公告)号：US12096344B2

公开(公告)日：2024-09-17

申请号：US17634179

申请日：2020-09-03

Applicant: Nokia Solutions and Networks Oy

Inventor： Philippe Godin ,  Devaki Chandramouli

IPC: H04W48/16

CPC classification number: H04W48/16

Abstract: In accordance with an example embodiment of the present invention, a method comprising: receiving, at a network node of a registration area (RA), a list of cells and their associated tracking area identities (TAIs) from at least one other network node of the RA; determining which of the received TAIs are neighbouring TAIs of one of the TAIs of the network node; building a list of neighbouring TAIs corresponding to the at least one other network node; transmitting, to a network management entity, a list of closed access group identifiers (CAG IDs) supported by the network node's TAIs and the list of neighbouring TAIs corresponding to the at least one other network node; and receiving, from the network management entity, a list of user equipment (UE) allowed CAG IDs.

公开(公告)号：US11343731B2

公开(公告)日：2022-05-24

申请号：US16990266

申请日：2020-08-11

Applicant: Nokia Solutions and Networks Oy

Inventor： Philippe Godin ,  György Wolfner

IPC: H04W4/00 ,  H04W36/00 ,  H04W76/11 ,  H04W8/08 ,  H04W36/08 ,  H04W36/32 ,  H04W48/16

Abstract: In accordance with an example embodiment of the present invention a source node decides to attempt to handover a user equipment to a target cell based at least in part on a comparison of a closed access group information of the user equipment and a stored closed access group information of a target cell associated with the target node. The source sends to the target node a handover message comprising an identifier of the target cell, receives from the target node a handover failure message comprising second closed access group information of the target cell which the source node uses to update the stored closed access group information of the target cell.