公开(公告)号：US20230373544A1

公开(公告)日：2023-11-23

申请号：US18198381

申请日：2023-05-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byungsik YOON ,  Sang Chul OH ,  Sook Jin LEE ,  Min Suk CHOI

IPC: B61L27/70 ,  H04L12/46 ,  G08C17/02 ,  H04L45/24

CPC classification number: B61L27/70 ,  H04L12/4641 ,  G08C17/02 ,  H04L45/24 ,  G08C2201/42 ,  B61L2205/00

Abstract: Provided is a method of operating a network device for train control in a wireless communication system, the method including: generating control information for train control; providing a first control command to a first base station through a first interface based on the control information; and providing a second control command to a second base station through a second interface based on the control information, wherein the first control command or the second control command is provided to the first base station or the second base station through the first interface or the second interface via a first core network for train control, and one of the first base station and the second base station is connected to a second core network.

公开(公告)号：US20170181021A1

公开(公告)日：2017-06-22

申请号：US15381385

申请日：2016-12-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byungsik YOON ,  Yong Seouk CHOI

IPC: H04W24/08 ,  H04W28/02 ,  H04W24/10

CPC classification number: H04W24/08 ,  H04W24/02 ,  H04W24/10 ,  H04W28/0268 ,  H04W28/0289

Abstract: A method and an apparatus for managing mobility of a terminal between heterogeneous networks. The method includes: generating applications each corresponding to a plurality of terminals and data units (DUs) of a plurality of heterogeneous networks using software defined network (SDN) technology; collecting radio channel measurement data on channels of radio networks from the plurality of terminals through terminal applications corresponding to the plurality of terminals; collecting an average value of radio resources used in radio units (RUs) of the plurality of heterogeneous networks and network congestion data of the RUs of the plurality of heterogeneous networks through DU applications corresponding to the DUs of the plurality of heterogeneous networks; and determining whether or not to change networks of the plurality of terminals on the basis of the radio channel measurement data, the average value of the radio resources, and the network congestion data.

公开(公告)号：US20150336594A1

公开(公告)日：2015-11-26

申请号：US14656678

申请日：2015-03-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byungsik YOON ,  Sook Jin LEE ,  Yong Seouk CHOI

IPC: B61L15/00 ,  H04B17/309 ,  H04B17/15

CPC classification number: B61L15/0027 ,  B61L15/0081 ,  B61L27/0005 ,  B61L27/0094 ,  H04B17/15 ,  H04B17/18 ,  H04B17/309

Abstract: A system that controls a train radio communication apparatus is provided. The control system periodically detects performance of each of a first train radio communication apparatus and a second train radio communication apparatus. The control system selects either one of the first train radio communication apparatus and the second train radio communication apparatus based on the detected performance. The control system transfers a signal that is received from the selected train radio communication apparatus.

Abstract translation: 提供一种控制列车无线电通信装置的系统。 控制系统周期性地检测第一列车无线电通信装置和第二列车无线电通信装置中的每一个的性能。 控制系统基于检测到的性能选择第一列车无线电通信装置和第二列车无线电通信装置中的任一个。 控制系统传送从所选列车无线电通信装置接收的信号。