Methods and system for multi-access protocol data unit session

Patent metadata

Field	Value
Publication number	US-12549471-B2
Application number	US-202318519572-A
Country	US
Kind code	B2
Filing date	Nov 27, 2023
Priority date	Aug 5, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A wireless communication method for use in a session management function is disclosed. The method comprises transmitting, to a wireless terminal, a steering rule for uplink data associated with a first protocol data unit session anchor of a multi-access protocol data unit session, wherein the multi-access protocol data unit session is associated with the first protocol data unit session anchor and a second protocol data unit session anchor.

First claim

The invention claimed is:

1 . A wireless communication method for use in a session management function, the method comprising:
transmitting, to a wireless terminal, a steering rule for uplink data associated with a first protocol data unit session anchor of a multi-access protocol data unit session, wherein the multi-access protocol data unit session is associated with the first protocol data unit session anchor and a second protocol data unit session anchor,
wherein the steering rule is transmitted in response to an insertion of a branching point or an uplink classifier in the multi-access protocol data unit session, and
wherein the steering rule indicates avoiding using a multipath transmission control protocol (MPTCP) functionality to steer the uplink data associated with the first protocol data unit session anchor.

2 . The wireless communication method of claim 1 , wherein the steering rule indicates using an access traffic steering, switching, splitting (ATSSS) functionality to steer the uplink data associated with the first protocol data unit session anchor.

3 . The wireless communication method of claim 1 , wherein the steering rule indicates steering the uplink data associated with the first protocol data unit session anchor to a branching point or an uplink classifier.

4 . The wireless communication method of claim 3 , wherein the branching point or the uplink classifier is comprised in the first protocol data unit session anchor or is deployed standalone.

5 . The wireless communication method of claim 1 , wherein the uplink data associated with the first protocol data unit session anchor comprises at least one of a prefix associated with the first protocol data unit session anchor or at least one internet protocol address associated with the first protocol data unit session anchor.

6 . The wireless communication method of claim 1 , further comprising:
transmitting, to a wireless network node and a gateway via which the wireless terminal accesses to a data network, tunnel information associated with a branching point or an uplink classifier associated with the first protocol data unit session anchor.

7 . The wireless communication method of claim 1 , further comprising:
transmitting, to the second protocol data unit session anchor, the steering rule.

8 . The wireless communication method of claim 1 , further comprising:
transmitting, to at least one of the wireless terminal or the second protocol data unit session anchor, an indication of removing the steering rule after a branching point or an uplink classifier associated with the first protocol data unit session anchor is removed.

9 . A wireless communication method for use in a wireless terminal, the method comprising:
receiving, from a session management function, a steering rule for uplink data associated with a first protocol data unit session anchor of a multi-access protocol data unit session, and steering the uplink data associated with the first protocol data unit session anchor based on the steering rule, wherein the multi-access protocol data unit session is associated with the first protocol data unit session anchor and a second protocol data unit session anchor, wherein the steering rule is received in response to an insertion of a branching point or an uplink classifier in the multi-access protocol data unit session, and wherein the steering rule indicates avoiding using a multipath transmission control protocol (MPTCP) functionality to steer the uplink data associated with the first protocol data unit session anchor.

10 . The wireless communication method of claim 9 , wherein the steering rule indicates using an access traffic steering, switching, splitting (ATSSS) functionality to steer the uplink data associated with the first protocol data unit session anchor.

11 . The wireless communication method of claim 9 , wherein the steering rule indicates steering the uplink data associated with the first protocol data unit session anchor to a branching point or an uplink classifier.

12 . The wireless communication method of claim 11 , wherein the branching point or the uplink classifier is comprised in the first protocol data unit session anchor or is deployed standalone.

13 . The wireless communication method of claim 9 , wherein the uplink data associated with the first protocol data unit session anchor comprises at least one of a prefix associated with the first protocol data unit session anchor or at least one internet protocol address associated with the first protocol data unit session anchor.

14 . The wireless communication method of claim 9 , further comprising:
receiving, from the session management function, an indication of removing the steering rule after a branching point or an uplink classifier associated with the first protocol data unit session anchor is removed.

15 . A wireless device comprising a session management function, the wireless device comprising:
a communication unit, configured to transmit, to a wireless terminal, a steering rule for uplink data associated with a first protocol data unit session anchor of a multi-access protocol data unit session, wherein the multi-access protocol data unit session is associated with the first protocol data unit session anchor and a second protocol data unit session anchor, wherein the steering rule is transmitted in response to an insertion of a branching point or an uplink classifier in the multi-access protocol data unit session, and wherein the steering rule indicates avoiding using a multipath transmission control protocol (MPTCP) functionality to steer the uplink data associated with the first protocol data unit session anchor.

16 . A wireless terminal, comprising:
a communication unit, configured to receive, from a session management function, a steering rule for uplink data associated with a first protocol data unit session anchor of a multi- access protocol data unit session; and a processor, configured to steer the uplink data associated with the first protocol data unit session anchor based on the steering rule, wherein the multi-access protocol data unit session is associated with the first protocol data unit session anchor and a second protocol data unit session anchor, wherein the steering rule is received in response to an insertion of a branching point or an uplink classifier in the multi-access protocol data unit session, and wherein the steering rule indicates avoiding using a multipath transmission control protocol (MPTCP) functionality to steer the uplink data associated with the first protocol data unit session anchor.

Assignees

• Zte Corp

Inventors

• Zhou Xingyue
• Zhu Jinguo
• Wang Menghan
• Liang Shuang

Classifications

• H04L45/302

  Route determination based on requested QoS · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W28/0925

  using policies · CPC title

• H04W28/084

  among network function virtualisation [NFV] entities; among edge computing entities, e.g. multi-access edge computing · CPC title

• H04W76/16

  Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer · CPC title