Deterministic transmission method, communication apparatus, and storage medium

Patent metadata

Field	Value
Publication number	US-12513722-B2
Application number	US-202318164290-A
Country	US
Kind code	B2
Filing date	Feb 3, 2023
Priority date	Aug 4, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

This application discloses a deterministic transmission method, a communication apparatus, and a storage medium, and relates to the communication field. In the method, a radio access network device may generate deterministic transmission capability information of a first switching node, and send the deterministic transmission capability information to a first network element. The first switching node includes the radio access network device and a terminal. Then, the radio access network device may receive a first scheduling policy that is delivered by the first network element based on the deterministic transmission capability information of the first switching node, so that deterministic transmission can be performed according to the first scheduling policy. This reduces a delay variation of a QoS flow carrying a TSN flow in a 5GS, and can avoid a need to select a QoS flow whose delay indicator is excessively high for the TSN flow.

First claim

What is claimed is:

1 . A deterministic transmission method, comprising:
generating, by a radio access network device, deterministic transmission capability information of a first switching node that comprises the radio access network device and a terminal, the generating further comprising:
obtaining, by the radio access network device, a residence time of the terminal when the radio access network device determines that a deterministic transmission characteristic of the terminal is authorized to be activated in a process in which the terminal is switched from an idle mode to a connected mode; and
determining a deterministic transmission delay of the first switching node based on at least one of the residence time of the terminal, a signal-to-noise ratio between the radio access network device and the terminal, a bandwidth allocated by the radio access network device to a quality of service flow of the terminal, or a priority of the quality of service flow of the terminal;
sending, by the radio access network device, the deterministic transmission capability information of the first switching node to a first network element; and receiving, by the radio access network device, a first scheduling policy from the first network element, wherein the first scheduling policy is generated by the first network element based on the deterministic transmission capability information of the first switching node.

2 . The method according to claim 1 , wherein before determining the deterministic transmission delay of the first switching node, the method further comprises:
receiving, by the radio access network device, the residence time from the terminal.

3 . The method according to claim 1 , wherein determining the deterministic transmission delay of the first switching node comprises:
determining, by the radio access network device, a first transmission delay of the first switching node based on one or more of the signal-to-noise ratio between the radio access network device and the terminal, the bandwidth allocated to the quality of service flow of the terminal, or the priority of the quality of service flow of the terminal, and based on a correspondence between the first transmission delay, the signal-to-noise ratio, the bandwidth, and a data priority used for deterministic transmission; and determining, by the radio access network device, the deterministic transmission delay of the first switching node based on the residence time of the terminal and the first transmission delay of the first switching node.

4 . The method according to claim 1 , wherein before generating the deterministic transmission capability information of the first switching node, the method further comprises:
receiving, by the radio access network device, a deterministic transmission indication from the terminal.

5 . The method according to claim 4 , wherein receiving the deterministic transmission indication from the terminal comprises:
receiving, by the radio access network device, a radio resource control (RRC) message from the terminal, wherein the RRC message comprises the deterministic transmission indication.

6 . The method according to claim 4 , further comprising:
sending, by the radio access network device, the deterministic transmission indication to a session management function (SMF).

7 . The method according to claim 4 , wherein receiving the deterministic transmission indication from the terminal comprises:
receiving, by the radio access network device, the deterministic transmission indication from an SMF, wherein the deterministic transmission indication is sent by the terminal to the SMF.

8 . The method according to claim 1 , further comprising:
sending, by the radio access network device, updated deterministic transmission capability information of the first switching node to the first network element.

9 . The method according to claim 1 , wherein the first network element is a first centralized network configuration (CNC), a policy control function (PCF), a network exposure function (NEF), or an SMF.

10 . A deterministic transmission method, comprising:
generating, by a user plane function (UPF), deterministic transmission capability information of a second switching node comprising the UPF; sending, by the UPF, the deterministic transmission capability information of the second switching node to a first network element; and receiving, by the UPF, a second scheduling policy from the first network element, wherein the second scheduling policy is generated by the first network element based on the deterministic transmission capability information of the second switching node.

11 . The method according to claim 10 , wherein generating the deterministic transmission capability information of the second switching node comprises:
determining, by the UPF, an egress port and a priority of the egress port; and determining, by the UPF, a second transmission delay of the second switching node based on the egress port, the priority of the egress port, and a correspondence between the second transmission delay, the egress port, and the priority of the egress port, wherein the second transmission delay is used as a deterministic transmission delay of the second switching node.

12 . The method according to claim 10 , wherein before generating the deterministic transmission capability information of the second switching node, the method further comprises:
receiving, by the UPF, a deterministic transmission indication from an SMF.

13 . The method according to claim 10 , further comprising:
sending, by the UPF, updated deterministic transmission capability information of the second switching node to the first network element.

14 . A deterministic transmission method, comprising:
receiving, by a first network element, deterministic transmission capability information of a first switching node from a radio access network device and deterministic transmission capability information of a second switching node from a user plane function (UPF), wherein the first switching node comprises the radio access network device and a terminal, and the second switching node comprises the UPF; generating, by the first network element, a first scheduling policy and a second scheduling policy based on the deterministic transmission capability information of the first switching node and the deterministic transmission capability information of the second switching node; and sending, by the first network element, the first scheduling policy to the radio access network device, and sending, by the first network element, the second scheduling policy to the UPF.

15 . The method according to claim 14 , wherein before generating the first scheduling policy and the second scheduling policy, the method further comprises:
receiving, by the first network element, a deterministic service transmission request from a second network element; and wherein generating the first scheduling policy and the second scheduling policy comprises: generating, by the first network element, the first scheduling policy and the second scheduling policy based on the deterministic transmission capability information of the first switching node, the deterministic transmission capability information of the second switching node, and the deterministic service transmission request.

16 . The method according to claim 14 , further comprising:
receiving, by the first network element, updated deterministic transmission capability information of the first switching node from the radio access network device, and/or updated determin

Assignees

• Huawei Tech Co Ltd

Inventors

• Ying Jiangwei
• Yang Yanmei

Classifications

• H04W72/12

  Wireless traffic scheduling · CPC title

• H04W72/542

  using measured or perceived quality · CPC title

• H04W72/56

  based on priority criteria · CPC title

• H04W76/20

  Manipulation of established connections · CPC title

• H04W8/24

  Transfer of terminal data · CPC title