US 11,153,791 B2 · Full and delta configuration in a central unit-distributed unit architecture

Abstract

This document describes methods, devices, systems, and means for determining configurations for the exchange of configuration information during network role transitions, such as a secondary node change or a handover. A secondary base station (123) node includes a central unit (CU) (410) and one or more distributed units (DU) (420). The secondary base station node is configured to receive an addition request message including configuration information and, based on the received configuration information, determine, at the CU (410) of the secondary base station (123), whether to apply a full configuration or a delta configuration. The CU (410) generates secondary cell group information, based on cell group configuration information received from the one or more DUs (420), and send an addition response message, including the generated secondary cell group information, to a master base station (122).

Claims26

Dependent claims

A method for determining a user equipment (UE) context by a central unit (CU) of a base station engaged as a secondary base station in dual-connectivity communication with a first UE, the method comprising:

receiving, at the CU of the base station, a first configuration message including a first configuration information from a master node of the dual-connectivity communication;
based on the received first configuration information, determining a first configuration type;
based on the determined first configuration type, generating a first UE Context Setup Request message for the first UE;
sending, by the CU, the generated first UE Context Setup Request message to a Distributed Unit (DU) of the base station, the generated first UE Context Setup Request effective to direct the DU to generate a first cell-group configuration;
receiving, from the DU, the first generated cell-group configuration;
generating a secondary-cell-group configuration using the received first cell-group configuration;
and
sending the secondary-cell-group configuration in a configuration response message to the master node of the dual-connectivity communication to configure the first UE.

5 more elements

A base station device comprising:

a central unit (CU);
and
one or more distributed units (DU), each DU being connected to the CU via an F1 interface;
the CU configured to:
receive a first configuration message including a first configuration information from a source base station for a first UE;
based on the received first configuration information from the source base station, determine a first configuration type;
based on the determined first configuration type being a delta configuration or a full configuration, generate a first User Equipment (UE) Context Setup Request message for the first UE;
send the generated first UE Context Setup Request message to at least one of the one or more DUs using the F1 interface;
at least one of the DUs configured to:
receive the first UE Context Setup Request message using the F1 interface;
generate a first cell-group configuration;
send the generated first cell-group configuration to the CU using the F1 interface;
the CU configured to:
receive the generated first cell-group configuration using the F1 interface;
generate a Handover Command including the received first cell-group configuration;
and
send the Handover Command to the source base station in a Handover Request Acknowledge message to configure the first UE.

14 more elements

Dependencies are inferred from the claim text.

Full and delta configuration in a central unit-distributed unit architecture

Life of this patent

Full and delta configuration in a central unit-distributed unit architecture

Life of this patent

Abstract

Claims26