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. 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.

2 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 . 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).

3 : ( ) * ( ) ** 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 . , 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.

4 1 . [4] Fig. 1 Schematic overview of ETCS Level 2 architecture Fig. 1 (Track Circuit) (Point machine) (Signalling equipment room) (Interlocking) , . (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.

5 2 ETCS On-board EURORADIO GSM-R Mobile Subset-037 A11T6001 , ETCS Trackside RBC EURORADIO GSM-R network Subset-037 . 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) ETCS Level 2/3 Application - (Safety-related).

6 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 . 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.)

7 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 . 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.

8 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) . 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).

9 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) . [11] ChhfhdhdBmLueuecenbenb )( )(log) ( )1000(log)]( [][10101010 (2) (2) d eNodeB UE [m] , Henb eNodeB [m], Hue UE [m], fc [MHz], C 3dB, 0dB (Contant factor) . eNodeB Pr eNodeB Pmin , (Cell range) eNodeB UE dr . Pmin (3) , dr (5) ( ) (4) . [4] LPdBmPr ][min (3) )( ][enbhxrmd (4) ChhfhMLGLGP xueuecueueueenbenbt )( )(log) ( (5) (2) L , (1) eNodeB Pr.

10 (1) (2) Table 3 . [4] Ta b l e 3 Parameters and assumptions used in the simulations Parameter Value fc 2110 MHz Genb 15 dBi Lenb -9 dB Henb 45 m Gue 0 dBi Lue -2 dB Hue 4 m M 8 dB C 0 dB Table 3 eNodeB UE d L Fig. 6 , dr eNodeB Pr Fig. 7 . Fig. 6 Signal path loss in relation to the distance from the eNodeB Fig. 7 eNodeB transmission power in relation to the Cell range Fig. 6 L Fig. 7 eNodeB Pr . Fig. 7 dr eNodeB Pr dr 48dBm . 1 eNodeB , N eNodeB Pr ETCS -92dB.