Smart Highway 를위한차량통신프로토콜 표준화동향

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1 Smart Highway 를위한차량통신프로토콜 표준화동향 - KRnet Seminar (H2-1) 한양대학교이상선교수 ssnlee@hanyang.ac.kr KRnet 2016

2 목차 1. WAVE와 CALM 통신의개요 2. WAVE와 CALM 통신네트워크 3. WAVE와 CALM의 Harmonization 4. CALM Communication Phase 5. Summary 2

1. WAVE 와 CALM 통신개요 WAVE 와 CALM 통신의특징 WAVE (Wireless Access in Vehicular Environments) WAVE Architecture : 802.11p and 1609.

: WSMP / IP CALM (Communication Access for Land Mobiles) 광역중장거리통신, 서비스중심의광역 ITS 통신 다양한무선통신기술접속 (Cellular, Microwave, IR 등 ) Continuous,

3 1. WAVE 와 CALM 통신개요 WAVE 와 CALM 통신의특징 WAVE (Wireless Access in Vehicular Environments) WAVE Architecture : p and 1609.x Multi-channel Operation : CCH / SCH Initialization : WAVE Service Advertisement (No Authentication & Association) Network Layer Services : WSMP / IP CALM (Communication Access for Land Mobiles) 광역중장거리통신, 서비스중심의광역 ITS 통신 다양한무선통신기술접속 (Cellular, Microwave, IR 등 ) Continuous, Multipoint Communication (Handover, Roaming) Non-IP (ITS Dedicated) and IPv6 Mobile Wireless Communication (Internet) Vehicle to Vehicle Communication (Non-IP) 3

4 WAVE 와 CALM Architecture 1. WAVE 와 CALM 통신개요 WAVE Architecture CALM Architecture Application Layer UDP/TCP WME WME SAP TSAP IPv6 WSMP WAVE Security Services SEC SAP LSAP LLC LSAP MLME Extension MLME MLMEX SAP MLME SAP MAC SAP WAVE MAC (including channel coordination) PHY SAP PLME PLME SAP PHY 4

communication Deliver received WSM to a higher layer entity determined by PSID Broadcast periodic and

5 WAVE 와 CALM 통신시나리오 2. WAVE 와 CALM 통신네트워크 WAVE communication scenario Send and receive WSAs (Provider and User) for V2I communication Deliver received WSM to a higher layer entity determined by PSID Broadcast periodic and event-driven BSM for V2V communication CALM communication scenario All communications between ITS-Ss is peer-to-peer, regardless of the ITS-S locations relative to the networks involved in the connection 5

ITS-S router ITS-S gateway which connects to the proprietary in-vehicle network and ECU Roadside ITS station ITS-S

6 CALM -ITS Station 간통신 2. WAVE 와 CALM 통신네트워크 Vehicular ITS station ITS-S gateway supporting functionality to connect to the ITS-S host and the ITS-S router ITS-S gateway which connects to the proprietary in-vehicle network and ECU Roadside ITS station ITS-S gateway supporting functionality to connect to the ITS-S hosts, the ITS-S routers and the ITS-S border routers Non-IP networking mode (Null-networking, Station-internal forwarding, N-hop forwarding) FSAM FNTP NPDU IP datagram 6

통신의호환성을확보하고조화된서비스메시지셋을정의하고자함 ISO/CD 16460 ITS-CALM-Communication Protocol Messages for Global Usage HTG 1 : ITS Security 표준 / HTG 2 : BSM 과 CAM 의 Harmonization /

7 Harmonization in C-ITS and CV 3. WAVE 와 CALM 의 Harmonization Harmonization in C-ITS and Connected-Vehicle Services EU 와 US 는 Harmonization Task Group(HTG) 을구성하여 CALM 과 WAVE 통신의호환성을확보하고조화된서비스메시지셋을정의하고자함 ISO/CD ITS-CALM-Communication Protocol Messages for Global Usage HTG 1 : ITS Security 표준 / HTG 2 : BSM 과 CAM 의 Harmonization / HTG 3 : ITS Communication / HTG 4&5 : Messaging 표준 (SPaT, MAP, IVI) 의 Harmonization / HTG 6 : ITS Security Policy 특히, HTG 3 에서 2013 년 4 분기부터시작되어현재완료됨 - Messaging protocol 의경우는 WSMP 와 FNTP - Service Advertisement protocol 의경우는 WSA 와 FSAP - (2016) ISO 16460, (2016) IEEE EU-US ITS Task Force Reports from HTG1 and HTG3 7

8 3. WAVE 와 CALM의 Harmonization WAVE 와 CALM의호환성범위 8

WAVE Short Message (WSM) 3. WAVE 와 CALM 의 Harmonization WSM format [ IEEE 1609.

N-Extensions (Tx-power, number, Data rate, CIPs, busy Ratio) Version : Version of the localized message protocol TPID Feature selector : Information

9 WAVE Short Message (WSM) 3. WAVE 와 CALM 의 Harmonization WSM format [ IEEE : 2014 ] Subtype : Null-networking, ITS station-internal forwarding, N-hop forwarding, Geo-forwarding, etc N-Extensions flag : Identifying presence of N-Extensions (Tx-power, number, Data rate, CIPs, busy Ratio) Version : Version of the localized message protocol TPID Feature selector : Information dissemination, General session mode, LPP mode, etc TPID T-Extension flag : Identifying presence of T-Extensions (Element ID) Length of User data (1~2 octets) WAVE Short Message [ WSMP WSM ] [ IEEE : 2016 ] [ LM (FNTP NPDU / WSMP WSM ) ] [ ISO : 2016 ] 9

10 3. WAVE 와 CALM 의 Harmonization WAVE Service Advertisement (WSA) WSA Format header 1 Var. WSA Version/ Change count Extension fields Service info Info WAVE Routing Advertisement [ IEEE : 2014 ] WSA header 4bits 4bits 4bits 4bits Var. Var. Var. Var. WSA WAVE Service WSA Header WSA Content WAVE Information Info Info version Option Identifier Count Routing Element Segment Segment Indicator Advertisement Extension [ IEEE : 2016 ] SAM Format SAM header 4bits 4bits 4bits 4bits Var. Var. Var. Var. Version Option Selector SAM-ID SAM- Count SAM Extensions Service Info Segment Info Segment IPv6 Routing Advertisement [ ISO : 2016 ] SAM-ID : Distinguish different SAMs announced by the same station. SAM-Count : Indicate the actual content status of the SAM 10

11 3. WAVE 와 CALM 의 Harmonization WAVE Service Advertisement (WSA) WSA Format 1 Var. 1 1 Var. Service Info WAVE Element ID=1 PSID Service Priority Index Extension fields [ IEEE : 2014 ] Var. Var. 5bits 2bits 1bit Var. Service Info Segment Service Info Count PSID Index Reserved Service Info Option Indicator WAVE Information Element Extension [ IEEE : 2016 ] SAM Format Var. Var. 5bits 3bits Var. 2bits Var. Service Info Segment Count N ITS-AID Index Option Selectors System Service Reply Port Number Service Info Extensions [ ISO : 2016 ] ITS-AID : Indicating the advertised service. Index : pointer to an entry in the Info Segment System Service : ITS-AID=0 (ITS application class system specified in ISO 15628). Reply Port Number : Port number used by a Service User as a destination port number. Service Info Extensions : ProviderServiceContext, IPv6Address, ServicePort, etc. 11

12 3. WAVE 와 CALM 의 Harmonization WAVE Service Advertisement (WSA) WSA Format Var. Info WAVE Element ID=2 Operating Class Number Adaptable Data Rate Transmit Power Level Extension fields [ IEEE : 2014 ] Var bit 7bits 1 Var. Info Segment Chan Info Count Operating Class Number Transmit Power Level Adaptable Data Rate WAVE Info Information Option Element Indicator Extension [ IEEE : 2016 ] SAM Format Var bit 7bits 1 Var. Var. Info Segment Count N Operating Class number Transmit Power Level Adaptable Data Rate Option Selector (8 options) Reserved options 7 through 1 Info Extensions [ ISO : 2016 ] Operating Class : Necessary information allowing the following number. number : The number of the channel to which the accompanying information pertains. Transmit Power Level : The Effective Isotropic Radiated Power(EIRP). Adaptable : Whether Data Rate provides a boundary value or fixed value. Data Rate : The data rate used on the channel. Info Extentions : EDCAParameterSet, Access

13 3. WAVE 와 CALM 의 Harmonization WAVE Service Advertisement (WSA) WSA Format Var. WAVE Routing Advertisement WAVE Element ID=3 Router lifetime IpPrefix Prefix length Default gateway Gateway MAC address Primary DNS Extension fields [ IEEE : 2014 ] WAVE Routing Advertisement Var. Router Lifetime IP Prefix Prefix Length Default Gateway Primary DNS WAVE Information Element Extension [ IEEE : 2016 ] SAM Format Var. IPv6 Routing Advertisement Router Lifetime IPv6 Prefix IPv6 Prefix Length Default Gateway Primary DNS IPv6 Routing Extensions [ ISO : 2016 ] Router Lifetime : Duration that the Default Gateway and associated information is valid. IPv6 Prefix : IPv6 subnet prefix of the link. IPv6 Prefix Length : Information on how many of the higher order bits of IPv6 Prefix are significant. Default Gateway : IPv6 address of a router that provides internetwork connectivity to the subnet. Primary DNS : IPv6 address of a device that can provide DNS look up for the subnet devices. IPv6 Routing Extensions : SecondaryDns, GatewayMacAddress. 13

14 3. WAVE 와 CALM 의 Harmonization Service Response Message (SRM) SRM (Service Response Message) SRM format SRM header 4bits 4bits Var. Var. Var. Var. Version Option Selector SRM Extensions Private Allocation Request Context Information Private Allocation Confirm [ ISO : 2016 ] Private Allocation Request field 2 Var. Var. PORT_DYN_SA M Count N ITS-AID Var. Var. Var. Var. 2 Context Information field Count N ITS-AID Context ID Context Data Client Port Number Var. Var. 2 Private Allocation Confirm field Count N ITS-AID Client Port number PORT_DYN_SAM : Contain a dynamically allocated two octet ITS-PN to be used by the Service Provider Client Port Number : Used by the Service Provider in transport layer destination port fields 14

15 4. CALM communication phase Groupcast CALM 통신 Service registration phase Service initialization phase Service operation phase ITS application session without CTX ITS application session with CTX 15

16 Unicast CALM 통신 4. CALM communication phase ITS application session with privately allocated communication channel It is designed for the situation when a service advertiser wants to allocate private communication channels to service users An additional handshake between the service advertiser and the service user is needed prior to start of the SrvOpP 16

17 Summary WAVE와 CALM 통신프로토콜비교및분석 Harmonization 표준결과검토 Localized Message : WSM과 FNTP NPDU의 Harmonization Service Advertisement Message : WSA와 FSAM의 Harmonization Service Response Message CALM Communication Phase 검토 Groupcast CALM 통신 Unicast CALM 통신 Issues PSID와 ITS-AID의호환성 CALM의 ITS-S internal forwarding과 Null-networking에의한 CI, VCI의 ID(Local CIID, Remote CIID) 및 Port number의수용성 SRM 수용여부에따른 Communication phase의다양화 WAVE의 IP-NW 및 ISO 15628(DSRC L7) 이용에의한서비스다양화 17

Service announcement using IEEE WAVE Service Advertisement as a model

Service announcement using IEEE WAVE Service Advertisement as a model 6 th ETSI ITS Workshop February 2014 Anders Hjelmare, Kapsch TrafficCom John Moring, IEEE P1609 Working Group Kapsch TrafficCom ETSI