公开(公告)号：US20250038872A1

公开(公告)日：2025-01-30

申请号：US18226421

申请日：2023-07-26

Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.

Inventor： Wei Li ,  Jianjun Zhang ,  Liang Xia ,  Liang Dong

IPC: H04J3/06

Abstract: A method of time synchronization between a DS-TT module inside a logical TSN bridge of a communication network with a TSN Grandmaster (GM) in a TSN Time Domain of the communication network. The method comprises, at a NW-TT module inside the logical TSN bridge, determining a frequency rate ratio between a Time Domain clock frequency (f5GS) and a TSN Time Domain clock frequency (fTSN). Then, using the frequency rate ratio and respective times of receipt of a TSN GM synchronization message at an ingress port of the NW-TT module and at an ingress port of the DS-TT module to determine a DS-TT ingress residence time (RDS-TT). Then, using the RDS-TT to synchronize the DS-TT module with the TSN GM.

公开(公告)号：US12137488B2

公开(公告)日：2024-11-05

申请号：US17674401

申请日：2022-02-17

Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.

Inventor： Xiao Dong Wang ,  Zhicheng Luo ,  Wai Lok Wong ,  Xue Feng ,  Liang Dong ,  Shijun Fan

IPC: H04W76/12 ,  H04W28/02

Abstract: Described is a method of setting up a direct connection between edge sites on a 5G communications network. The method comprises: configuring 5G network functions (NFs) in the 5G communications network; configuring 5G NFs at the edge sites, if not already configured; and based on said configured NFs, setting up a direct tunnel between the edge sites according to a pre-defined tunnel policy.

公开(公告)号：US20240283555A1

公开(公告)日：2024-08-22

申请号：US18110594

申请日：2023-02-16

Applicant: Hong Kong Applied Science And Technology Research Institute Co, Ltd.

Inventor： Liang Xia ,  Jianjun Zhang ,  Wei Li ,  Liang Dong

IPC: H04J3/06 ,  H04W56/00

CPC classification number: H04J3/0667 ,  H04W56/0015

Abstract: Described is a method of synchronizing a TSN NW-TT module inside a UPF with a Grandmaster (GM) in a Time Domain of the communication network. The method comprises receiving one or more PTP or gPTP messages on an N3 interface of the UPF. The method includes determining a first time offset value between the GM and the UPF N3 interface based on information received in the PTP or gPTP messages. A timing of the UPF N3 interface is adjusted using the determined first time offset value to synchronize the time between the UPF N3 interface and the GM. The method includes determining a second time offset value between the UPF N3 interface and the NW-TT module. A timing of the NW-TT module is adjusted using the determined second time offset value to synchronize the time between the NW-TT module and the GM.

公开(公告)号：US20220329534A1

公开(公告)日：2022-10-13

申请号：US17228067

申请日：2021-04-12

Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.

Inventor： Ka Ho Mui ,  Wei Chen ,  Jianjun Zhang ,  Liang Xia ,  Jingwei Liu ,  Liang Dong

IPC: H04L12/851 ,  H04L12/853

Abstract: Described is a method of processing data packets in a communications network. The method comprises receiving a first data packet of a data packet flow from a network device and determining an instruction set for processing said first data packet. A flow key for said first data packet is determined. The first data packet is processed according to the determined instruction set. The method includes receiving a subsequent data packet and determining if a flow key of said subsequent data packet matches said flow key of said first data packet. If yes, the subsequent data packet is processed using the instruction set determined for said first data packet.

公开(公告)号：US11456961B1

公开(公告)日：2022-09-27

申请号：US17228067

申请日：2021-04-12

Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.

Inventor： Ka Ho Mui ,  Wei Chen ,  Jianjun Zhang ,  Liang Xia ,  Jingwei Liu ,  Liang Dong

IPC: H04L47/2483 ,  H04L47/2441 ,  H04L47/2416 ,  H04W8/04

Abstract: Described is a method of processing data packets in a communications network. The method comprises receiving a first data packet of a data packet flow from a network device and determining an instruction set for processing said first data packet. A flow key for said first data packet is determined. The first data packet is processed according to the determined instruction set. The method includes receiving a subsequent data packet and determining if a flow key of said subsequent data packet matches said flow key of said first data packet. If yes, the subsequent data packet is processed using the instruction set determined for said first data packet.

公开(公告)号：US20230262791A1

公开(公告)日：2023-08-17

申请号：US17674401

申请日：2022-02-17

Applicant: Hong Kong Applied Science And Technology Research Institute Co., Ltd.

Inventor： Xiao Dong Wang ,  Zhicheng Luo ,  Wai Lok Wong ,  Xue Feng ,  Liang Dong ,  Shijun Fan

IPC: H04W76/12 ,  H04W28/02

CPC classification number: H04W76/12 ,  H04W28/0268

Abstract: Described is a method of setting up a direct connection between edge sites on a 5G communications network. The method comprises: configuring 5G network functions (NFs) in the 5G communications network; configuring 5G NFs at the edge sites, if not already configured; and based on said configured NFs, setting up a direct tunnel between the edge sites according to a pre-defined tunnel policy.