Wireless network and methods to maintain MA PDU session at NSACF

Patent metadata

Field	Value
Publication number	US-12376180-B2
Application number	US-202418637236-A
Country	US
Kind code	B2
Filing date	Apr 16, 2024
Priority date	Sep 30, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose a wireless network and methods to maintain a MA PDU session at a NSACF entity. The method includes determining, by a SMF entity, that a PDU session is the MA PDU session based on an indication from a UE. Further, the method includes indicating, by the SMF entity, that the PDU session is the MA PDU session to the NSACF entity in response to determination. The wireless network may maintain the count accurately even though the PDU session is a MA PDU session.

First claim

What is claimed is:

1. A method performed by a session management function (SMF) entity for managing a multiple access protocol data unit (MA PDU) session in a wireless communication network, the method comprising:
receiving, from a user equipment (UE), a message indicating that a protocol data unit (PDU) session is the MA PDU session;
transmitting, to a network slice admission control function (NSACF) entity, a PDU session update request message including information on multiple access types and a request to increase or decrease a number of PDU sessions per single-network slice selection assistance information (S-NSSAI), wherein the information on multiple access types includes a first access type and an additional access type; and
receiving, from the NSACF entity, a result indication for each of the multiple access types.

2. The method of claim 1 ,
wherein increasing or decreasing the number of PDU sessions per the S-NSSAI is performed during an MA PDU session establishment procedure or a PDU session release procedure.

3. The method of claim 1 ,
wherein the first access type indicates one of a 3rd generation partnership project (3GPP) access type or a non-3GPP access type and the additional access type indicates the other of the 3GPP access type or the non-3GPP access type.

4. The method of claim 1 ,
wherein the result indication includes information on whether a maximum number of PDU sessions per S-NSSAI is reached or not.

5. A method performed by a network slice admission control function (NSACF) entity for managing a multiple access protocol data unit (MA PDU) session in a wireless communication network, the method comprising:
receiving, from a session management function (SMF) entity, a protocol data unit (PDU) session update request message including information on multiple access types and a request to increase or decrease a number of PDU sessions per single-network slice selection assistance information (S-NSSAI), wherein the information on multiple access types includes a first access type and an additional access type;
updating the number of PDU sessions per the S-NSSAI based on the information on multiple access types and the request; and
transmitting, to the SMF entity, a result indication for each of the multiple access types.

6. The method of claim 5 ,
wherein updating the number of PDU sessions comprises one of increasing the number of the PDU sessions or decreasing the number of the PDU sessions per the S-NSSAI based on the information on multiple access types and the request.

7. The method of claim 5 ,
wherein the first access type indicates one of a 3rd generation partnership project (3GPP) access type or a non-3GPP access type and the additional access type indicates the other of the 3GPP access type or the non-3GPP access type.

8. The method of claim 5 , further comprising:
identifying whether a maximum number of PDU sessions per S-NSSAI is reached.

9. The method of claim 5 ,
wherein the result indication includes information on whether a maximum number of PDU sessions per S-NSSAI is reached or not.

10. A session management function (SMF) entity for managing a multiple access protocol data unit (MA PDU) session in a wireless communication network, the SMF entity comprising:
a processor;
a communicator; and
an MA PDU session managing controller, coupled with the processor and the communicator, configured to:
receive, from a user equipment (UE), a message indicating that a protocol data unit (PDU) session is the MA PDU session,
transmit, to a network slice admission control function (NSACF) entity, a PDU session update request message including information on multiple access types and a request to increase or decrease a number of PDU sessions per single-network slice selection assistance information (S-NSSAI), wherein the information on multiple access types includes a first access type and an additional access type, and
receive, from the NSACF entity, a result indication for each of the multiple access types.

11. The SMF entity of claim 10 ,
wherein increasing or decreasing the number of PDU sessions per the S-NSSAI is performed during an MA PDU session establishment procedure or a PDU session release procedure.

12. The SMF entity of claim 10 ,
wherein the first access type indicates one of a 3rd generation partnership project (3GPP) access type or a non-3GPP access type and the additional access type indicates the other of the 3GPP access type or the non-3GPP access type.

13. The SMF entity of claim 10 ,
wherein the result indication includes information on whether a maximum number of PDU sessions per S-NSSAI is reached or not.

14. A network slice admission control function (NSACF) entity for managing a multiple access protocol data unit (MA PDU) session in a wireless communication network, the NSACF entity comprising:
a processor;
a communicator; and
an MA PDU session managing controller, coupled with the processor and the communicator, configured to:
receive, from a session management function (SMF) entity, a protocol data unit (PDU) session update request message including information on multiple access types and a request to increase or decrease a number of PDU sessions per single-network slice selection assistance information (S-NSSAI), wherein the information on multiple access types includes a first access type and an additional access type,
update the number of PDU sessions per the S-NSSAI based on the information on multiple access types and the request,

transmit, to the SMF entity, a result indication for each of the multiple access types.

15. The NSACF entity of claim 14 ,
wherein updating the number of PDU sessions comprises one of increasing the number of the PDU sessions or decreasing the number of the PDU sessions per the S-NSSAI based on the information on multiple access types and the request.

16. The NSACF entity of claim 14 ,
wherein the first access type indicates one of a 3rd generation partnership project (3GPP) access type or a non-3GPP access type and the additional access type indicates the other of the 3GPP access type or the non-3GPP access type.

17. The NSACF entity of claim 14 ,
wherein the MA PDU session managing controller is further configured to:
identify whether a maximum number of PDU sessions per S-NSSAI is reached.

18. The NSACF entity of claim 14 ,
wherein the result indication includes information on whether a maximum number of PDU sessions per S-NSSAI is reached or not.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Roy Koustav
• Kumar Lalith
• Sen Arijit
• Hashmi Danish Ehsan
• Nayak Ashok Kumar
• Lee Hoyeon

Classifications

• H04W80/10

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

• H04W88/14

  Backbone network devices · CPC title

• H04W76/32

  Release of transport tunnels · CPC title

• H04W76/12 Primary

  Setup of transport tunnels · CPC title

• H04W76/20 Primary

  Manipulation of established connections · CPC title