US 10,952,265 B2 · Dynamic resource scaling and VM migration in NG-RAN

Abstract

Systems and methods of modifying the bearer context of a DRB of an E1 interface for a gNB are described. To modify the bearer context associated with a DRB for a particular UE, the gNB-CU-UP transmits a Bearer Context Modification Required message through the E1 interface and receives in response a Bearer Context Modification Confirm message that confirms the modification of the bearer context. The Bearer Context Modification Required message and Bearer Context Modification Confirm message both include the new GTP TEID and TNL address to be used after modification of the bearer context, a gNB-CU-CP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-CP, a gNB-CU-UP UE E1AP ID that uniquely identifies a UE association over the E1 interface within the gNB-CU-UP, and a DRB ID IE that uniquely identifies the DRB.

Claims20

Dependent claims

A computer-readable storage medium that stores instructions for execution by one or more processors of a central unit user plane (gNB-CU-UP) of a next generation NodeB (gNB), the one or more processors to configure the gNB-CU-UP to, when the instructions are executed:

determine whether to modify a bearer context associated with a data radio bearer (DRB) for a user equipment (UE) served by the gNB-CU-UP;
and
in response to a determination that the context is to be modified, send, to a central unit control plane (gNB-CU-CP) connected to the gNB-CU-UP through an E1 interface, a Bearer Context Modification Required message, the Bearer Context Modification Required message comprising a general packet radio service (GPRS) Tunneling Protocol (GTP) Tunnel Endpoint Identifier (TEID) and transport network layer (TNL) address to be used after modification of the bearer context.

An apparatus of a next generation NodeB (gNB), the apparatus comprising:

processing circuitry;
and memory,
wherein the gNB is configured with logical nodes including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU), the gNB-CU comprising a gNB-CU control plane (gNB-CU-CP) for control-plane functionality and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality, the gNB-CU-CP configured to communicate with the gNB-CU-UP over an E1 interface, the gNB-CU-UP configured to communicate user plane messages with the gNB-DU over an F1 user-plane interface (F1-U), the gNB-CU-CP is configured to communicate control plane messages with the gNB-DU over an F1 control plane interface (F1-C),
the processing circuitry configured to:
determine whether to modify a bearer context associated with a data radio bearer (DRB) for a particular user equipment (UE) served by the gNB-CU-UP;
in response to a determination that the context is to be modified, generate, for transmission to the gNB-CU-CP, a Bearer Context Modification Required message, the Bearer Context Modification Required message comprising a general packet radio service (GPRS) Tunneling Protocol (GTP) Tunnel Endpoint Identifier (TEID) and transport network layer (TNL) address to be used after modification of the bearer context;
and
decode a Bearer Context Modification Confirm message from the gNB-CU-CP that confirms the modification of the bearer context in response to transmission of the Bearer Context Modification Required message;
and
the memory configured to store the GTP TEID and TNL address.

7 more elements

An apparatus of a next generation NodeB (gNB), the apparatus comprising:

processing circuitry;
and memory,
wherein the gNB is configured with logical nodes including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU), the gNB-CU comprising a gNB-CU control plane (gNB-CU-CP) for control-plane functionality and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality, the gNB-CU-CP configured to communicate with the gNB-CU-UP over an E1 interface, the gNB-CU-UP configured to communicate user plane messages with the gNB-DU over an F1 user-plane interface (F1-U), the gNB-CU-CP is configured to communicate control plane messages with the gNB-DU over an F1 control plane interface (F1-C),
the processing circuitry configured to:
decode, from the gNB-CU-UP, a Bearer Context Modification Required message, the Bearer Context Modification Required message comprising a general packet radio service (GPRS) Tunneling Protocol (GTP) Tunnel Endpoint Identifier (TEID) and transport network layer (TNL) address to be used after modification of a bearer context associated with a data radio bearer (DRB) for a particular user equipment (UE) served by the gNB-CU-UP;
and
generate, for transmission to the gNB-CU-UP, a Bearer Context Modification Confirm message from the gNB-CU-CP that confirms the modification of the bearer context in response to transmission of the Bearer Context Modification Required message;
and
the memory configured to store the GTP TEID and TNL address.

6 more elements

Dependencies are inferred from the claim text.

Dynamic resource scaling and VM migration in NG-RAN

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Dynamic resource scaling and VM migration in NG-RAN

Life of this patent

Abstract

Claims20