PDU session management

Patent metadata

Field	Value
Publication number	US-12328703-B2
Application number	US-202217871087-A
Country	US
Kind code	B2
Filing date	Jul 22, 2022
Priority date	Jan 10, 2017
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A method for PDU session management. The method includes receiving, at an Access and Mobility Management function entity (AMF), a registration request message transmitted by a user equipment (UE), wherein the registration request message comprises a list of PDU sessions to be activated; and, in response to receiving the registration request message, the AMF transmitting to a session management function (SMF) a request message for requesting the SMF to activate UP resources for at least one of the PDU sessions identified in the list of PDU sessions.

First claim

The invention claimed is:

1. A method for protocol data unit (PDU) session management, the method comprising:
determining, by a user equipment (UE), that one or more PDU sessions have uplink data to transmit and require user plane (UP) resources;
transmitting, by the UE, a registration request message comprising information indicating that the user plane resources for the one or more PDU sessions are not established;
wherein the information comprises one or more bits, each of the bits indicating that uplink data is pending for a corresponding PDU session of the one or more PDU sessions and the user-plane resources for the corresponding PDU session are not established.

2. The method of claim 1 , wherein the registration request message further comprises a registration type identifier (ID) for identifying a registration type, a UE ID, security parameters, network slice selection assistance information, and Network Slice Selection Assistance Information.

3. The method of claim 1 , wherein the registration request message further comprises a registration type identifier indicating that the UE is in a registered state and is initiating a registration due to mobility.

4. The method of claim 1 , wherein the UP resources for the identified PDU session include data radio bearers on a radio interface and an UP tunnel.

5. The method of claim 1 , wherein the registration request message comprises a follow-on flag indicating that the UE is requesting that the network maintain a signaling connection with the UE.

6. A user equipment (UE), the UE comprising:
a data processing system;
a data storage system;
a transmitter coupled to an antenna; and
a receiver coupled to the antenna, wherein the UE is configured to:
determining, by the UE, that one or more protocol data unit (PDU) sessions have uplink data to transmit and require user plane (UP) resources;
transmitting, by the UE, a registration request message comprising information indicating that the user plane resources for the one or more PDU sessions are not established;
wherein the information comprises one or more bits, each of the bits indicating that uplink data is pending for a corresponding PDU session of the one or more PDU sessions and the user-plane resources for the corresponding PDU session are not established.

7. The UE of claim 6 , wherein the registration request message further comprises a registration type identifier (ID) for identifying a registration type, a UE ID, a Permanent ID or a Temporary ID, security parameters, network slice selection assistance information.

8. The UE of claim 6 , wherein the registration request message further comprises a registration type identifier, ID, indicating that the UE is in a registered state and is initiating a registration due to mobility.

9. The UE of claim 6 , wherein the UP resources for the identified PDU session include data radio bearers on a radio interface and a UP tunnel.

10. The UE of claim 6 , wherein the registration request message further comprises a follow-on flag indicating that the UE is requesting that the network maintain a signaling connection with the UE.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Schliwa-Bertling Paul
• Rommer Stefan
• Hedman Peter

Classifications

• H04W76/25

  Maintenance of established connections · CPC title

• H04W76/10 Primary

  Connection setup · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W80/10 Primary

  adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)} · CPC title

• H04W76/20

  Manipulation of established connections · CPC title