ETCS Level 2 기반 열차제어시스템 성능 확보를 위한 …

1 2016 KSR2016S072 etcs Level 2 LTE-R A study on the Analysis of LTE-R Performance Parameter for Performance Achievement of etcs Level 2 based Train Control System *, * , *, ** Jaehong Lee *, Jeongkun Ji* , Changhun Kim*, Juhun Park* * Abstract Train Control in etcs (European Train Control System) Application is operated by GSM-R(Global System for Mobile Communications Railway) method, and interface methods between etcs and GSM-R are described in etcs Subset specification However, LTE-R(Long Term Evolution-Railway) network is recently being applied on behalf of GSM-R network for radio based communication method of train control in Korea and Foreign Country.

2 In this paper, we analyzed interface method between etcs and GSM-R described in etcs subset specification and suggested LTE-R application method in etcs Level 2 based train control system. Also, analysis of LTE-R performance parameter is performed in order to secure performance of train control system applied to LTE-R method. Keywords : etcs , GSM-R, LTE-R, Train Control System, Performance Parameter (European Train Control System : etcs ) GSM-R(Global System for Mobile Communications Railway) , etcs Subset etcs GSM-R . GSM-R LTE-R(Long Term Evolution-Railway) . etcs Subset etcs GSM-R , etcs Level 2 LTE-R.

3 LTE-R LTE-R . : etcs , GSM-R, LTE-R, , 1. 2000 GSM-R . (ERTMS : European Railway Traffic Management System) etcs , GSM-R, ETML(European Traffic Management Layer) . : ( ) * ( ) ** ERA(European Railway Agency) ERTMS etcs Subset , Subset 037, 039 etcs GSM-R etcs Level 2 Application GSM-R . [1-2] GSM-R LTE-R etcs Level 2.

4 , GSM-R etcs Subset , etcs Level 2 LTE-R . 2. etcs Level 2 Application etcs Level 2 Application etcs Level 1, Level 2, Level 3 . etcs Level 1 , etcs Level 2 (Radio Block Center : RBC) , etcs Level 3 Level 2 .[3] GSM-R etcs Level 2 Fig. 1 . [4] Fig. 1 Schematic overview of etcs Level 2 architecture Fig. 1 (Track Circuit) (Point machine) (Signalling equipment room) (Interlocking).

5 (Traffic Management System) , (Movement Authority : MA) . GSM-R OBU(On-Board Unit) OBU , (Euro Balise) , . etcs Architecture etcs Subset 026 System Requirements Specification 2 Basic System Description Fig. 2 etcs On-board EURORADIO GSM-R Mobile , etcs Trackside RBC EURORADIO GSM-R network . [3] Fig. 2 ERTMS/ etcs system and its interfaces(Baseline 3) Fig. 2 etcs On-board EURORADIO GSM-R Mobile Subset-037 A11T6001 , etcs Trackside RBC EURORADIO GSM-R network Subset-037.

6 etcs Application GSM-R Subset-037 A11T6001 Table 1 . Ta b l e 1 Subset-037 & A11T6001 specification(Baseline 3) Reference Title Version Subset-037 EuroRadio FIS A11T6001 (MORANE) Radio Transmission FFFIS for EuroRadio Table 1 Subset-037 Euro Radio FIS(Functional Interface Specification)

7 etcs Level 2/3 Application - (Safety-related) . A11T6001 Radio Transmission FFFIS(Form Fit Functional Interface Specification) for Euro Radio Euro Radio GSM-R , , . [5] etcs Application GSM-R Baseline 3 Subset-037 & A11T6001 Fig. 3 OBU RBC GSM-R . [5] Fig. 3 OBU-RBC communication based on the GSM-R network , etcs Application GSM-R Euroradio . Euroradio , , , - , , . Euroradio.

8 OBU-RBC GSM-R ISDN(Integrated Services Digital Network] . [4] etcs Application LTE-R GSM-R etcs Application (Communication Protocol) OSI Open System Interconnection] . LTE-R Fig. 4 IP . [6] Fig. 4 etcs over GSM-R & LTE communication technologies etcs Application LTE-R User Equipment(UE), E-UTRAN NodeB(eNodeB), EPC(Evolved Packet Core) . UE , eNodeB , . EPC LTE-R . EPC S-GW(Serving Gateway), P-GW(PDN Gateway), MME(Mobility Management Entity), HSS(Home Subscriber Server) , S-GW eNodeB LTE 3 GPP (anchor point) , P-GW (connectivity) LTE non-3 GPP.)

9 LTE-R etcs Level 2 OBU-RBC ( ) . [7-9] Fig. 5 Proposed OBU-RBC communication based on the LTE network Fig. 5 OBU-RBC LTE-R (Protocol Stack) . OBU/UE RBC UDP(User Datagram Protocol) , UDP TCP(Transmission Control Protocol) etcs Application . LTE-Uu UE eNodeB Packet Data Convergence Protocol(PDCP), Radio Link Control (RLC), Medium Access Control(MAC), Physical Layer(PHY) . S1-U eNodeB S-GW/P-GW GTP(GPRS Tunnelling Protocol), UDP, IP . SGi S-GW/P-GW RBC Ethernet . [7-9] etcs LTE-R etcs (Radio coverage), (User speed), (Transfer delay), (Communication disruption), (communication establishment).

10 5 etcs etcs Subset-093 Table 2 . [10] Ta b l e 2 Minimum received signal power of etcs transmission requirement Parameter Value Minimum received signal power -92dB Table 2 etcs (Minimum received signal power) -92dB . LTE-R eNodeB (received power) . eNodeB (Transmission power) Pt, eNodeB Genb, Lenb, UE Gue, (Penetration loss) Lue, M, (Signal path loss) L eNodeB Pr (1) . [4] LMLGLGPdBmPueueenbenbtr ][ (1) (1) L , COST231 Hata (2).