1、 ETSI TS 103 544-27 V1.3.0 (2017-10) Publicly Available Specification (PAS); Intelligent Transport Systems (ITS); MirrorLink; Part 27: Basic Meta Data Service CAUTION The present document has been submitted to ETSI as a PAS produced by CCC and approved by the ETSI Technical Committee Intelligent Tra
2、nsport Systems (ITS). CCC is owner of the copyright of the document CCC-TS-089 and/or had all relevant rights and had assigned said rights to ETSI on an “as is basis“. Consequently, to the fullest extent permitted by law, ETSI disclaims all warranties whether express, implied, statutory or otherwise
3、 including but not limited to merchantability, non-infringement of any intellectual property rights of third parties. No warranty is given about the accuracy and the completeness of the content of the present document. TECHNICAL SPECIFICATION ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)2 Reference DTS/I
4、TS-88-27 Keywords interface, ITS, PAS, smartphone 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 noti
5、ce The present document can be downloaded from: http:/www.etsi.org/standards-search 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 authoriza
6、tion of ETSI. In case of any existing 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 a
7、ware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following
8、services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx 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 versio
9、n shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. Car Connectivity Consortium 2011-2017. All rights reserved. ETSI logo is a Trade Mark of ETSI registered for the benefit of its Members. Mirr
10、orLink is a registered trademark of Car Connectivity Consortium LLC. RFB and VNC are registered trademarks of RealVNC Ltd. UPnP is a registered trademark of UPnP Forum. Other names or abbreviations used in the present document may be trademarks of their respective owners. DECTTM, PLUGTESTSTM, UMTSTM
11、and the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks re
12、gistered and owned by the GSM Association. ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Abbreviations . 5g34 Data Service Definition
13、 6g34.1 Basic Meta Data Service Version 1.0 . 6g35 SBP Binding . 8g36 Theory of Operation . 8g36.1 Basic Operation 8g3Annex A (informative): Authors and Contributors . 10g3History 11g3ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)4 Intellectual Property Rights Essential patents IPRs essential or potential
14、ly essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPR
15、s notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be giv
16、en 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, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by thei
17、r owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services
18、or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS). The present document is part 27 of a multi-part deliverable. Full details of the entire series can be found in part 1 i.1.
19、Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “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“ and “must not“ a
20、re NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)5 1 Scope The present document is part of the MirrorLinkspecification which specifies an interface for enabling remote user interaction of a mobile device via another device. The present
21、document is written having a vehicle head-unit to interact with the mobile device in mind, but it will similarly apply for other devices, which provide a colour display, audio input/output and user input mechanisms. The present document specifies the basic meta data service based on SBP (Service Bin
22、ary Protocol) framework. The service is used as a basis for other meta information data services, providing MirrorLink Clients with MirrorLink Server services. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version num
23、ber) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at h
24、ttps:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long-term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI TS 103 544-6 (V1.3.0): “Publ
25、icly Available Specification (PAS); Intelligent Transport Systems (ITS); MirrorLink; Part 6: Service Binary Protocol (SBP)“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references,
26、 only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long-term validity. The following refe
27、renced 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 103 544-1 (V1.3.0): “Publicly Available Specification (PAS); Intelligent Transport Systems (ITS); MirrorLink; Part 1: Connectivity“. 3 Abbrevi
28、ations For the purposes of the present document, the following abbreviations apply: SBP Service Binary Protocol ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)6 4 Data Service Definition 4.1 Basic Meta Data Service Version 1.0 /* The specification defines a meta information umbrella service. * This specifi
29、cation is used as a basis for any Meta Information * Data service, improving on the low-level introspection mechanisms * offered by the CDB and SBP protocols. The service cannot be used * as a standalone service. * Any Meta Data Service, building on the Basic Meta Data Service * shall follow the fol
30、lowing definition of data objects: * - Readable Objects are provided from the data source to any data * sink. Readable object cant be written to from the data sink. * Readable Objects only have readable elements. * - Writeable Objects can be modified by any data sink and returned * back to a to any
31、data source. I.e. all writeable objects can be * read. Writeable Objects have only writeable elements. * - Configuration Objects can be acquired by only one data sink at * a time, modified by that sink and returned to any data source. * Configurable Objects have only writeable elements. * Support fo
32、r all objects, and elements within objects is mandatory * unless otherwise specified. * version 1.0 */ SERVICE com.mirrorlink.meta.basic /* Enumeration bit mask values of the subscription types. */ ENUM SubscriptionTypes /* Subscription to the object is not possible. */ NONE = 0x00, /* Object allows
33、 only subscription at regular-time intervals. * Minimum and maximum interval times are provided separately. */ REGULAR = 0x01, /* Object allows only subscription on-change. */ ON_CHANGE = 0x02, /* Object allows subscription on-change and at regular-time * intervals. */ BOTH = 0x03, /* Object allows
34、automatic subscription, where the data source can * decide, whether to regular-interval or on-change subscription is * best. */ AUTOMATIC = 0x04 ; /* Enumeration values of access types. */ ENUM AccessTypes /* Object is read-only. * Read access shall be supported via SBP:GET. ETSI ETSI TS 103 544-27
35、V1.3.0 (2017-10)7 * Read access should be supported via SBP:SUBSCRIBE. */ READABLE = 0x00, /* Object can be written and read-back. * Read request to the object shall return a previously written * value. A read without prior write shall return a default value. * Write access shall be supported via SB
36、P:SET. * Read access shall be supported via SBP:GET. * Read access should not be supported via SBP:SUBSCRIBE. */ WRITABLE = 0x02, /* Object can be written by only a single data sink. * The use of this object shall be limited to service configuration * or service setup. * Only one Data Sink shall be
37、allowed to write to the object. * Access control shall be enforced from the Data Sink endpoint. * Write access from multiple Data Sink endpoints may result in * instable Data Service behavior. * Write access shall be supported via SBP:SET. * Read access is allowed from multiple Data Sink endpoints.
38、* Read access shall be supported via SBP:GET. * Read access may be supported via SBP:SUBSCRIBE. */ CONFIGURABLE = 0x03 ; /* The ObjectDescription structure holds all meta data related to a * specific meta data service object. */ STRUCTURE ObjectDescription /* The objects universal identifier (uid),
39、as defined by the data * service. * mandatory, uid 0x31c7eeeb */ INT uid; /* The objects access rights. * mandatory, uid 0xe6d3cde3 */ ENUM accessType; /* The subscription types, the object supports. The bit masks for * the different types are provided in subscriptionTypeBitMask. * More than one sub
40、scription type can be support. A value of zero * indicates, that the object does not support subscription. Shall * be provided if object is readable. * mandatory, uid 0x3dd534bc */ ENUM subscriptionType; /* Minimum subscription time, the object supports for regular- * interval subscription. Value gi
41、ven in ms. The top 8 bits shall * be “0“, as SBP allows only for a 24-bit representation. Shall * be provided, if object support regular-interval subscription. * conditional, unit ms, uid 0xd353665f */ INT minIntervalTime; /* Maximum subscription time, the object supports for regular- * interval sub
42、scription. Value given in ms. The top 8 bits shall * be “0“, as SBP allows only for a 24-bit representation. Shall ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)8 * be provided, if object support regular-interval subscription. * conditional, unit ms, uid 0x3ca36e71 */ INT maxIntervalTime; ; /* The MetaInf
43、oObjects objects contains the list of available SBP * objects available through the respective data service. * mandatory, readable, version 1.0, uid 0xe5b9efdc */ OBJECT MetaInfoObjects /* List of available objects from the date service. * mandatory, uid 0xa1065962 */ STRUCTURE_ARRAY objectList; ; ;
44、 5 SBP Binding The MetaInfoObjects object provides details on how the SBP Sink can access SBP objects from the SBP Source. An SBP Source shall allow access to each object, as defined within its MetaInfoObjects object. In case the SBP Sink attempts to access any of the SBP objects outside the allowed
45、 mechanism, the SBP Source shall send an SBP Response message with a respective error code, as defined in 1: Access to an object with a not-included UID value; error code 0x10000001 (Unknown UID). Write access to read-only objects; error code 0x1000000C (Write not allowed). Subscription interval out
46、side the provide minimum and maximum values; error code 0x10000003 (Wrong subscription interval). Subscription type not supported; error code 0x10000004 (Wrong subscription type). Additional requirements may be defined within the respective Meta Information data service specification, which are usin
47、g this Basic Meta data service, but the above requirements shall not change. 6 Theory of Operation 6.1 Basic Operation The following sequence diagram shows the basic operation of the Basic Meta Information data service. ETSI ETSI TS 103 544-27 V1.3.0 (2017-10)9 Figure 1: Sequence Diagram of Basic Se
48、rvice Operation It consists of the following steps: 1) CDB Client Endpoint sends a CDB ServicesRequest message, requesting the list of data services, provided from the CDB Server Endpoint. 2) CDB Server Endpoint replies with a CDB ServicesSupported message, listing the supported data services. The l
49、ist includes all data services, for which the CDB Server Endpoint implements the data source. 3) CDB Client Endpoint identifies the data service, it intends to start. 4) CDB Client Endpoints sends a CDB StartService message, requesting the CDB Server Endpoint to start the respective data service. 5) CDB Server Endpoint sends a CDB Response message with error code 0x0001 (Launch ok). 6) SBP Data Sink sends an SBP GET message for the MetaInfoObjects object, which will be included f
