1、 ETSI TS 101 556-3 V1.1.1 (2014-10) Intelligent Transport Systems (ITS); Infrastructure to Vehicle Communications; Part 3: Communications system for the planning and reservation of EV energy supply using wireless networks TECHNICAL SPECIFICATION ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)2Reference DTS/
2、ITS-0010031 Keywords Charging, ITS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present
3、document can be downloaded from: http:/www.etsi.org The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any exi
4、sting or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be su
5、bject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/E
6、TSI_support.asp Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written author
7、ization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE
8、are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)3Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs term
9、inology 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Overview of the recharging spot reservation procedure . 6g34.1 Reservation process in the context of related electro-mobi
10、lity standards . 6g34.2 Identification of the reservation server . 8g35 Protocol procedures 9g35.1 Overview of the protocol operation 9g35.2 Pre-Reservation procedure . 10g35.3 Reservation procedure 11g35.4 Cancellation procedure . 12g35.5 Update procedure . 12g36 Reservation modification issues . 1
11、3g37 Tabular description of protocol messages 13g37.1 Pre-Reservation Request and Response message formats 13g37.2 Reservation Request and Response message formats. 14g37.3 Cancellation Request and Response message formats . 15g37.4 Update Request and Response message formats 16g38 Protocol encoding
12、 . 16g3Annex A (normative): ASN.1 syntax 17g3History 20g3ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)4Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly availa
13、ble for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server
14、 (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, e
15、ssential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS). The present document is part 3 of a multi-part deliverable covering the infrastructure to Vehicle Communication as identified below: Part 1:
16、 “Electric Vehicle Charging Spot Notification Specification“; Part 2: “Communication system specification to support application requirements for Tyre Pressure Monitoring System (TPMS)“; Part 3: “Communications system for the planning and reservation of EV energy supply using wireless networks“. Mod
17、al verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“
18、and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)51 Scope The present document specifies wireless application protocols and messages supporting the discovery of offered services (completing related discovery protocols), c
19、harging spot reservation (and possible renegotiation), pre-payment of the service reservation in the vehicle (involving pre-payment support or contract validation), and application-level logical pairing of the Electric Vehicle to a selected charging spot. Requirements regarding the underlying transp
20、ort and network layer services are also defined. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the re
21、ference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot gua
22、rantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. 1 ISO/IEC 15118-2: “Road vehicles - Vehicle-to-Grid Communication Interface - Part 2: Network and application protocol requirements“. 2 DIN SPEC 912
23、86:2011: “Electric mobility - Schemes of identifiers for E-Roaming - ContractID and Electric Vehicle Supply Equipment ID“. 3 IETF RFC 5246: “The Transport Layer Security (TLS) Protocol Version 1.2“. 4 IETF RFC 6347: “Datagram Transport Layer Security Version 1.2“. 2.2 Informative references The foll
24、owing referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ETSI TS 101 556-1: “Intelligent Transport Systems (ITS); Infrastructure to Vehicle Communication; Electric Vehicle Charging Spot Notificatio
25、n Specification“. i.2 IEC 61851-3: “Electric vehicle conductive charging system - Part 3: Communication protocol between electric vehicle charging station and electric vehicle“. i.3 ISO/IEC 15118-7: “Road vehicles - Vehicle-to-Grid Communication Interface - Part 7: Network and application protocol r
26、equirements for wireless communication“. i.4 ISO/IEC 15118-3: “ Road vehicles - Vehicle to grid communication interface - Part 3: Physical and data link layer requirements“. i.5 ISO/IEC 15118-8: “ Road vehicles - Vehicle to grid communication interface - Part 8: Physical layer and data link layer re
27、quirements for wireless communication“. ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)63 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: Alternating Current (AC): AC charging through the usual grid voltage Direct Current (DC
28、): fast charging over high-voltage DC current provided by the recharging spot Electric Vehicle Supply Equipment (EVSE): charging control equipment in the charging spot inductive: inductive charging without a physical contact quickdrop: swapping of the EV battery pack or of the trailer carrying the b
29、attery extension 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current DC Direct Current EIM External Identification Means EV Electric Vehicle EVSE Electric Vehicle Supply Equipment HMI Human Machine Interface NFC Near Field Communicati
30、ons TCP Transport Control Protocol TLS Transport Layer Security UDP Universal Datagram Protocol UTC Universal Time Coordinate 4 Overview of the recharging spot reservation procedure 4.1 Reservation process in the context of related electro-mobility standards The recharging spot reservation process s
31、tarts from the journey planning phase and continues during the driving phase, terminating with the approach of the reserved parking / fast recharge / quick drop area. The charging spot reservation process shall support both EVs equipped with the V2G adapter, i.e. ISO/IEC 15118-2 interface compliant
32、vehicles 1, as well as EVs performing “mode 3“ recharging based only on the IEC 61851-3 interface i.2. This includes support of different electrical energy provisioning modes, such as wired, quick drop or inductive recharging. Figure 1 illustrates the scope of this protocol in the context of the EVs
33、 journey phases and in relation to other standards. This protocol is expected to be implemented either in the EVs on-board computer or on the drivers nomadic device. The reservation involves the validation of the users payment account, in order to make sure beforehand that the user is capable of pay
34、ing for the reserved services; therefore the reservation management server shall be prepared to handle such account validation. ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)7Figure 1: Overview of complementing EV recharging management standards roles Depending on the system architecture, the recharging sp
35、ot selection is done either by the EV, a nomadic device application, or an electro-mobility server/infrastructure; such architectural difference is irrelevant from the point of view of this reservation protocol. A candidate recharging spot has been selected before initiating this procedure. As shown
36、 in Figure 1, the matching of charging spot identifier by the EV driver is complemented by the EVSEs matching of plugged-in EV with the one belonging to the reservation. When the EV supports the V2G interface, the ISO/IEC 15118-2 procedures 1 ensure that only the EVs with a valid reservation shall b
37、e able to recharge. Furthermore, the ISO/IEC 15118-2 procedures 1 may ensure that the offered charging sessions terminate by the end of the reservation period, so that there is no point for the EV to stay longer than reserved. The implementation of this concept requires appropriate system-level inte
38、gration between the presently described reservation interface and the V2G interface defined in the ISO/IEC 15118-2 documents 1; the present document defines the identification data which shall be passed between these systems. In order to support EVs recharging without the V2G interface, the reservat
39、ion process shall allow the exchange of a Pairing ID, such as RFID or NFC based identifiers, which is then used by the EVSE during the validation of physical pairing. The complete transaction cycle begins from information gathering at the start of journey planning, and completes with the billing and
40、 accounting of utilized charging services. Figure 2 illustrates the wider view of this transaction cycle, and shows this cycle, along with the role of relevant communication standards. Figure 2: The EV energy management cycle ETSI ETSI TS 101 556-3 V1.1.1 (2014-10)8It is furthermore recognized that
41、a trustable reservation system shall be complemented by an appropriate enforcement process to guarantee that the reserved resource shall be available. The main challenges are to ensure that the reserved recharging space is not occupied by someone else before the arrival of reserving EV and that the
42、reserving EV departs by the end of the reserved time period. While the specification of such complementing enforcement is out of scope of the present document, the following observations are made: It appears that a legal enforcement is a most cost-effective solution for enforcing reservation-based E
43、V charging spots in regions where parking itself is payment based. In that case the EVSE may detect through some sensor when a vehicle occupies a corresponding parking slot, and alert parking enforcement personnel if a valid charging session is not initiated subsequently within some timeout. Similar
44、ly, the EVSE may alert parking enforcement personnel if the recharging EV does not depart by the end of its reservation period. In regions where parking is for free, EV charging spots should be planned in locations of abundant parking space availability; therefore, chances for conflicting parking oc
45、cupation would be minimized. The EV charging spot reservation protocol specified in the present document is based on a request-response model based client-server architecture, where every transaction is initiated by the reserving client. There may be situations, where the EV driver should be alerted
46、 of some upcoming time limit, such as the pending expiry of reserved charging time if the EV is still plugged in. Figure 3 gives a graphical illustration of such relevant time limit alerts. The presently described protocol conveys all the needed information to the client device during the reservatio
47、n process for making such alert. It is not the responsibility of the reservation management server to make such alerts towards the EV driver; therefore, no such alert procedure is being specified. Displaying alerts as needed is the responsibility of the client device implementation, and is considere
48、d to be a design issue being out of the scope of the present document. Figure 3: HMI aspects of the EV recharging management procedure The present reservation protocol does not convey the actual pricing information of the reserved services. The reason is that the charging session is negotiated upon
49、plugin at the start of the ISO/IEC 15118 procedure 1 and i.3, and the final charging price may depend on the selected power and priority levels. Conveying pricing information during the reservation stage might therefore be confusing for EV users. 4.2 Identification of the reservation server Before initiating the recharging spot reservation, the client device has the EVSE-ID which identifies the recharging spot intended to be reserved. This list of candidate EVSE-IDs is received either directly through the recharging spot notificat
