1、 ISO 2013 Intelligent transport systems Communications access for land mobiles (CALM) ITS station management Part 4: Station-internal management communications Systmes intelligents de transport Accs aux communicat ions des services mobiles terrestres (CALM) Gestion des stations ITS Partie 4: Communi
2、cations de gestion interne la station INTERNATIONAL STANDARD ISO 24102-4 First edition 2013-07-01 Reference number ISO 24102-4:2013(E) ISO 24102-4:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of this publication
3、 may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of
4、the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 24102-4:2013(E) ISO 2013 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative re
5、ferences 1 3 T erms and definitions . 1 4 Abbreviated terms 2 5 ITS station management . 2 6 Reference architecture . 3 7 Protocol data units . 3 8 Communication procedures . 5 8.1 Initialization 5 8.2 Transmission 5 8.3 Reception . 6 9 Management procedures . 7 9.1 General . 7 9.2 ITS-SCU-ID assign
6、ment 7 9.3 Maintenance of ITS-SCU-ID 8 9.4 Shutdown of ITS-SCU . 8 10 Security. 8 11 Conformance . 8 12 Test methods . 9 Annex A (normative) ASN.1 module .10 Annex B (normative) IIC PDUs .13 Bibliography .18 ISO 24102-4:2013(E) Foreword ISO (the International Organization for Standardization) is a w
7、orldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented
8、on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop thi
9、s document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Di
10、rectives, Part 2. www.iso.org/directives Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the developme
11、nt of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patents Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. The committee responsible for this document is ISO
12、/TC 204, Intelligent transport systems. ISO 24102 consists of the following parts, under the general title Intelligent transport systems Communications access for land mobiles (CALM) ITS station management: Part 1: Local management Part 3: Service access points Part 4: Station-internal management co
13、mmunications Part 5: Fast service advertisement protocol (FSAP) The following parts are under preparation: Part 2: Remote management Part 6: Path and flow managementiv ISO 2013 All rights reserved ISO 24102-4:2013(E) Introduction This International Standard is part of a family of International Stand
14、ards for communications access for land mobiles (CALM). An introduction to the whole set of International Standards is provided in ISO 21217. This part of ISO 24012 is part 4 of a multipart International Standard which determines the intelligent transport systems (ITS) station management - station-i
15、nternal management communications. The ITS station management entity provides functionality related to the management of communication protocol layers and the security entity presented in the ITS station reference architecture specified in ISO 21217 and presented in Figure 1, and in line with the ge
16、neral ITS architecture specified in ISO 21217. Communications Access Networking Road Transport and Traffic Telematics (RTTT); Test specifications for Intelligent Transport Systems, Communications access for land mobiles (CALM), ITS station management (ISO 24102); Part 1: Protocol Implementation Conf
17、ormance Statement (PICS) proforma ETSI TS 102 797-2, Intelligent Transport Systems (ITS); Road Transport and Traffic Telematics (RTTT); Test specifications for Intelligent Transport Systems, Communications access for land mobiles (CALM), ITS station management (ISO 24102); Part 2: Test Suite Structu
18、re and Test Purposes (TSS Road Transport and Traffic Telematics (RTTT); Test specifications for Intelligent Transport Systems, Communications access for land mobiles (CALM), ITS station management (ISO 24102); Part 3: Abstract Test Suite (ATS) and partial PIXIT information 3 T erms a nd definiti ons
19、 For the purposes of this document, the terms and definitions given in ISO 21217, ISO 21218, ISO 24102-1, and ISO 24102-3 and the following apply. 3.1 ITS-S communication unit addressable instance of the ITS station reference architecture comprising as an access to the ITS station- internal network
20、INTERNATIONAL ST ANDARD ISO 24102-4:2013(E) ISO 2013 All rights reserved 1 ISO 24102-4:2013(E) 4 Abbreviated terms For the purposes of this document, the abbreviated terms given in ISO 21217, ISO 21218, ISO 24102-1, and ISO 24102-3 and the following apply. ITS-SCU ITS station communication unit IIC
21、ITS-S internal management communications IICM IIC Manager IICA IIC Agent IICP ITS-S internal management communications protocol n.a. not applicable 5 ITS station management The ITS station management includes functionality specified in the various parts of this multipart International Standard: 1) T
22、he functionality of local ITS station management specified in ISO 24102-1. 2) The functionality of remote ITS station management specified in ISO 24102-2. 3) The functionality of service access points specified in ISO 24102-3. 4) The functionality of ITS station-internal management communications sp
23、ecified in this part of ISO 24102. 5) The functionality of the “Fast Service Advertisement Protocol” (FSAP) specified in ISO 24102-5. ITS station-internal management communications interconnects ITS station communication units (ITS- SCUs) of the same ITS station (ITS-S) via the ITS station-internal
24、network illustrated in ISO 21217. This communication is also referred to as “ITS-S internal management communications” (IIC) in this part of ISO 24102. IIC allows remote access to management SAPs specified in ISO 24102-3. IIC may be secured following the principles of trusted distributed systems. De
25、tailed mandatory requirements are specified in the following clauses of this part of ISO 24102. Clause 6 specifies the IIC reference architecture. Clause 7 specifies IIC protocol data units (PDUs). Clause 8 specifies communication procedures. Clause 9 specifies management procedures. Clause 10 speci
26、fies security elements and procedures. Clause 11 specifies conformance declaration. Clause 12 specifies test methods. Annexes provide further mandatory requirements.2 ISO 2013 All rights reserved ISO 24102-4:2013(E) 6 Reference architecture “ITS-S Internal management Communications” (IIC) is communi
27、cations between ITS-S Management Entities of different ITS-SCUs of the same ITS via the ITS station-internal network. A specific purpose of IIC is remote access to management service access points MI-SAP, MN-SAP, MF-SAP, and MS-SAP. The reference architecture for IIC is illustrated in Figure 2. Comm
28、unications ITS-S Networking IIC-Response. ISO 2013 All rights reserved 3 ISO 24102-4:2013(E) Data PDU-ID SourceITS- SCU-ID Destination ITS-SCU-ID PDU- Counter Data Error Status IIIC-Request: IIIC-Response: SecRq SecRs PDU-ID SourceITS- SCU-ID Destination ITS-SCU-ID PDU- Counter Figure 3 IIC PDU stru
29、cture Details on parameters of these PDUs shall be as specified in Table 1. Table 1 IIC PDUs PDU element IIC-Request IIC-Response SourceITS-SCU-ID ITS-SCU-ID of source ITS-SCU, which produces the request. See parameter “ITS-scuId” specified in ISO 24102-1. ITS-SCU-ID of ITS-SCU, which pro- duces the
30、 response. DestinationITS-SCU-ID ITS-SCU-ID of destination ITS-SCU, which shall evaluate the request. Same as SourceITS-SCU-ID of related request if not requested otherwise in this part of ISO 24102. PDU-Counter Even number generated from a cyclic counter at the ITS-SCU, which produces the request.
31、PDU-Counter of related request incremented by one. PDU-ID Distinguishes IIC-Request and IIC- Response. Distinguishes IIC-Request and IIC- Response. Data Data type identifier followed by request data. Data type identifier followed by response data. ErrorStatus Not existent. Existent. 0: No error happ
32、ened 0: Number indicating type of error. SeqRq Information authenticating the transmitting station. Not existent. SeqRs Not existent. Information authenticating the transmitting station. The ASN.1 specification of the PDUs as provided in Annex A of this part of ISO 24102 shall apply. ITS-SCU-ID valu
33、es used in parameters “SourceITS-SCU-ID” and “DestinationITS-SCU-ID” shall be as specified in Table 2.4 ISO 2013 All rights reserved ISO 24102-4:2013(E) Table 2 ITS-SCU-ID value assignment SourceITS-SCU-ID DestinationITS- SCU-ID Description 0 Reserved. Used to indicate “own/local ITS-SCU”. Must not
34、be used in communications with other ITS-SCUs. n.a. 1 ITS-SCU-ID identifying ITS-SCUs with ITS-S host role. n.a. 2 ITS-SCU-ID identifying ITS-SCUs with ITS-S router role. n.a. 3 - 7 ITS-SCU-ID identifying ITS-SCUs with an implementation specific role 8 . 65534 ITS-SCU-ID identifying uniquely a speci
35、fic ITS-SCU in an ITS station. n.a. 65535 ITS-SCU-ID identifying all ITS-SCUs. “PDU-ID” values and the related “Data” values shall be set as specified in Annex B of this part of ISO 24102. “ErrorStatus” values shall be set as specified in Table 3. Table 3 ErrorStatus value assignment ErrorStatus Des
36、cription 0 No error 1 PDU-ID unknown or not implemented 2 Duplicate ITS-SCU-ID 3 Invalid or unknown AliveMessage 4 Invalid or unknown ITS-SCU type 5 . 254 Reserved for future use 255 Unspecified error For transmission and reception of these PDUs, the networking and transport layer protocol shall use
37、 port number PORT_IIC identified in 3. 8 Communication procedures 8.1 Initialization 8.1.1 IICM ITS station-internal management communications between addressable ITS-SCUs shall be initialized as specified in Clause 9 on management procedures. 8.1.2 IICA Prior to the initialization specified in Clau
38、se 9, the IICA shall initialize communications via NF-SAP as requested for the selected ITS-S networking and transport layer protocol. As a minimum, the ITS-SP PORT_ICC identified in 3 shall be announced to the ITS-S networking and transport layer protocol. 8.2 Transmission 8.2.1 IIC-Request PDU Upo
39、n request from a protocol in the ITS-S management entity, the IICM shall construct the IIC-Request PDU specified in Clause 7. In case secure transmission is needed, the “Security Support” illustrated in Figure 2 shall be involved via the MS-SAP. Details on security shall be as specified in Clause 10
40、. ISO 2013 All rights reserved 5 ISO 24102-4:2013(E) The “PDU-Counter” value shall be set to an even value uniquely in an ITS-SCU under the control of the IICM issuing the request. The initial value shall be zero. For every next IIC-Request PDU, the counter value shall be incremented by two. It shal
41、l wrap from 65 534 to zero. The IICM shall note the value of the PDU-Counter in case a response is expected. The IICM shall forward the IIC-Request PDU to the IICA using MF-COMMAND IICrequestTX specified in Annex A. The IICA shall request transmission of the IIC-Request PDU using the appropriate ser
42、vice of the NF-SAP. 8.2.2 IIC-Response PDU Upon reception of an IIC-Request PDU which requires transmission of an IIC-Response PDU, the IICM shall construct the IIC-Response PDU specified in Clause 7. In case secure transmission is needed, the “Security support” illustrated in Figure 2 shall be invo
43、lved via the MS-SAP. Details on security shall be as specified in Clause 10. The “PDU-Counter” value shall be set equal to the value of the “PDU-Counter” contained in the related IIC-Request PDU incremented by one. The IICM shall forward the IIC-Response PDU to the IICA using MF-COMMAND IICresponseT
44、X specified in Annex A. The IICA shall request transmission of the IIC-Response PDU using the appropriate service of the NF-SAP. 8.3 Reception 8.3.1 IIC-Request PDU The IICA shall forward an IIC-Request PDU received via NF-SAP to the IICM using MF-REQUEST IICrequestRX specified in Annex A. The IICM
45、shall perform the following steps: 1) Check DestinationITS-SCU-ID: i) If it is either 1 or 2 and the selected value does not indicate an existing role of the ITS-SCU, steps 2), 3), 4), and 5) are not performed. ii) If it is either 0 or from the range of reserved values, steps 2), 3), 4), and 5) are
46、not performed. 2) Check the PDU-Counter value. In case the value is odd, steps 3), 4), and 5) are not performed. 3) In case the element SecRq is not empty, involve the “Security Support” illustrated in Figure 2 via the MS-SAP as specified in Clause 10. 4) Perform the required action as indicated by
47、PDU-ID and Data contained in the IIC-Request PDU. 5) In case a response is required, the IICM shall prepare the IIC-Response PDU as specified above. 8.3.2 IIC-Response PDU The IICA shall forward an IIC-Response PDU received via NF-SAP to the IICM using MF-REQUEST IICresponseRX specified in Annex A. The IICM shall perform the following steps: 1) Check DestinationITS-SCU-ID: i) If it is either 1 or 2 and the selected value does not indicate an existing role of the ITS-SCU, steps 2), 3), and 4) are not performed.6 ISO 2013 All rights reserved
