Time sensitive communication support information updating method and device in mobile communication system

Patent metadata

Field	Value
Publication number	US-12513632-B2
Application number	US-202017787768-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Jan 6, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4G communication system such as LTE. The method according to the present disclosure is a time synchronization method for transmitting time sensitive networking (TSN) data in a session management function (SMF) device of a mobile communication system, and may comprise a step of determining a time interval for updating time sensitive communications assistance information (TSCAI), and providing the determined time interval to respective nodes of the mobile communication system.

First claim

The invention claimed is:

1 . A method performed by a session management function (SMF), in a wireless communication system supporting a time sensitive network (TSN), the method comprising:
receiving, from a TSN application function (AF), parameters including at least one of a first periodicity or a first survival time; receiving, from a user plane function (UPF), time information between a first clock associated with the TSN and a second clock associated with a fifth generation (5G) system, the time information including a time offset and a rateRatio between the first clock associated with the TSN and the second clock associated with the 5G system; converting the first survival time included in the parameters to a second survival time to be included in time sensitive communications assistance information (TSCAI), based on the rateRatio; determining the TSCAI, based on the parameters and the time information; and transmitting, to a base station, the TSCAI.

2 . The method of claim 1 , the determining further comprising:
converting the first periodicity included in the parameters to a second periodicity to be included in the TSCAI, based on the rateRatio.

3 . The method of claim 1 , the transmitting further comprising:
performing a protocol data unit (PDU) session modification procedure in order to transmit the determined TSCAI to the base station.

4 . The method of claim 1 , wherein a survival time is a time period that an application is in normality without receiving any message.

5 . A session management function (SMF) in a wireless communication system supporting a time sensitive network (TSN), the SMF comprising:
a network interface; and a controller configured to:
receive, from a TSN application function (AF), parameters including at least one of a first periodicity or a first survival time,
receive, from a user plane function (UPF), time information between a first clock associated with the TSN and a second clock associated with a fifth generation (5G) system, the time information including a time offset and a rateRatio between the first clock associated with the TSN and the second clock associated with the 5G system,
convert the first survival time included in the parameters to a second survival time to be included in time sensitive communications assistance information (TSCAI), based on the rateRatio,
determine the TSCAI based on the parameters and the time information, and
transmit, to a base station, the TSCAI.

6 . The SMF of claim 5 , wherein the controller is further configured to:
convert the first periodicity included in the parameters to a second periodicity to be included in the TSCAI, based on the rateRatio.

7 . The SMF of claim 5 , wherein the controller is further configured to:
perform a protocol data unit (PDU) session modification procedure in order to transmit the determined TSCAI to the base station.

8 . The SMF of claim 5 , wherein a survival time is a time period that an application is in normality without receiving any message.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Moon Sangjun
• Kweon Kisuk

Classifications

• H04J3/0685

  Clock or time synchronisation in a node; Intranode synchronisation · CPC title

• H04L7/0033

  Correction by delay · CPC title

• H04L7/0008

  Synchronisation information channels, e.g. clock distribution lines · CPC title

• H04W28/02

  Traffic management, e.g. flow control or congestion control · CPC title

• H04L47/28

  in relation to timing considerations · CPC title