1、Mai 2015DEUTSCHE NORM DIN-Normenausschuss Luft- und Raumfahrt (NL)Preisgruppe 12DIN Deutsches Institut fr Normung e. V. Jede Art der Vervielfltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut fr Normung e. V., Berlin, gestattet.ICS 49.140; 33.040.40!%A%t“2300281www.din.deDDIN
2、 EN 16603-50-53Raumfahrttechnik SpaceWire Protokoll zur CCSDS-Paketbertragung;Englische Fassung EN 16603-50-53:2015Space engineering SpaceWire CCSDS packet transfer protocol;English version EN 16603-50-53:2015Ingnierie spatiale SpaceWire Protocole de transfert de paquets CCSDS;Version anglaise EN 16
3、603-50-53:2015Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlin www.beuth.deGesamtumfang 24 SeitenDIN EN 16603-50-53:2015-05 2 Nationales Vorwort Dieses Dokument (EN 16603-50-53:2015) wurde vom Technischen Komitee CEN/CLC/TC 5 Raumfahrt“ erarbeitet, dessen Sekretariat vom DIN (Deutschla
4、nd) gehalten wird. Das zustndige deutsche Normungsgremium ist der Arbeitsausschuss NA 131-10-01 AA Interoperabilitt von Informations-, Kommunikations- und Navigationssystemen“ im DIN-Normenausschuss Luft- und Raumfahrt (NL). Dieses Dokument (EN 16603-50-53:2015) basiert auf ECSS-E-ST-50-53C. Dieses
5、Dokument enthlt unter Bercksichtigung des DIN-Prsidialbeschlusses 1/2004 nur die englische Originalfassung von EN 16603-50-53:2015. Dieses Dokument wurde speziell zur Behandlung von Raumfahrtsystemen erarbeitet und hat daher Vorrang vor jeglicher Europischer Norm, da es denselben Anwendungsbereich h
6、at, jedoch ber einen greren Geltungsbereich (z. B. Luft- und Raumfahrt) verfgt. DIN EN 16603-50-53:2015-05 3 Nationaler Anhang NA (informativ) Begriffe, Abkrzungen und Konventionen 3 Begriffe, Abkrzungen und Konventionen 3.1 Begriffe aus anderen Normen Fr die Anwendung dieser Norm gelten die Begriff
7、e nach ECSS-S-ST-00-01 und ECSS-E-ST-50-51. 3.2 Fr diese Norm spezifische Begriffe Keine. 3.3 Abkrzungen Fr die Anwendung dieser Norm gelten die folgenden Abkrzungen: Abkrzung Bedeutung CCSDS Beratender Ausschuss fr Raumfahrtdaten-Systeme (en: Consultative Committee for Space Data Systems) EEP Fehle
8、rmeldung Paketende (en: error end of packet) EOP Paketende (en: end of packet) SpW SpaceWire (en: SpaceWire) 3.4 Konventionen In diesem Dokument werden Hexadezimalzahlen mit dem Prfix 0x angegeben, beispielsweise 0x34 und 0xDF15. Binrzahlen werden mit dem Prfix 0b angegeben, z. B. 0b1001100 und 0b01
9、. Dezimalzahlen haben kein Prfix. DIN EN 16603-50-53:2015-05 4 Leerseite EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16603-50-53 January 2015 ICS 33.040.40; 49.140 English version Space engineering SpaceWire CCSDS packet transfer protocol Ingnierie spatiale SpaceWire protocole de transfert
10、de paquets CCSDS Raumfahrttechnik SpaceWire Protokoll zur CCSDS-Paketbertragung This European Standard was approved by CEN on 23 November 2014. CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the s
11、tatus of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC member. This European Standard exists in three official versions (Engl
12、ish, French, German). A version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN and CENELEC members are the national standards bodi
13、es and national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
14、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members.
15、 Ref. No. EN 16603-50-53:2015 E EN 16603-50-53:2015 (E) 2 Table of contents Foreword 4 1 Scope . 5 2 Normative references . 6 3 Terms, definitions and abbreviated terms 7 3.1 Terms defined in other standards . 7 3.2 Terms specific to the present standard . 7 3.3 Abbreviated terms. 7 3.4 Conventions
16、7 4 Principles 8 4.1 Purpose 8 4.2 Protocol features 8 4.3 Services 9 4.4 Guide to this document . 10 5 Requirements 11 5.1 Service parameters . 11 5.1.1 CCSDS packet 11 5.1.2 Packet length 11 5.1.3 Status code . 11 5.1.4 Target SpaceWire Address . 11 5.1.5 Target Logical Address . 12 5.1.6 User App
17、lication Value 12 5.2 Service primitives 12 5.2.1 CCSDS Packet Transfer Service . 12 5.2.2 CCSDS_PACKET_SEND.request . 12 5.2.3 CCSDS_PACKET_RECEIVED.indication . 13 5.3 CCSDS Packet Transfer Protocol fields 14 5.3.1 Target SpaceWire Address field 14 5.3.2 Target Logical Address field 14 5.3.3 Proto
18、col Identifier field . 14 DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 3 5.3.4 Reserved field . 14 5.3.5 User Application field 14 5.3.6 Packet field . 15 5.4 CCSDS Packet Transfer Protocol format 15 5.5 CCSDS Packet Transfer Protocol Action 16 5.5.1 Overview . 16 5.5.2 Send request . 16 5.5.3
19、 Transfer packet . 17 5.5.4 Receive indication . 17 Annex A (informative) Managed parameters 19 Bibliography . 20 Figures Figure 4-1: Protocol configuration . 8 Figure 5-1: Encapsulated CCSDS Packet format . 15 Figure 5-2: CCSDS Packet Transfer Protocol Packet Transfer . 16 DIN EN 16603-50-53:2015-0
20、5 EN 16603-50-53:2015 (E) 4 Foreword This document (EN 16603-50-53:2015) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16603-50-53:2015) originates from ECSS-E-ST-50-53C. This European Standard shall be given the status of a
21、 national standard, either by publication of an identical text or by endorsement, at the latest by July 2015, and conflicting national standards shall be withdrawn at the latest by July 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of paten
22、t rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document has been developed to cover specifically space syst
23、ems and has therefore precedence over any EN covering the same scope but with a wider domain of applicability (e.g. : aerospace). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
24、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
25、witzerland, Turkey and the United Kingdom. DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 5 1 Scope There is a number of communication protocols that can be used in conjunction with the SpaceWire Standard (ECSS-E-ST-50-12), to provide a comprehensive set of services for onboard user applications
26、. To distinguish between the various protocols a protocol identifier is used, as specified in ECSS-E-ST-50-51. This Standard specifies the CCSDS packet transfer protocol, which is one of these protocols that works over SpaceWire. The aim of the CCSDS Packet Transfer Protocol is to transfer CCSDS Pac
27、kets across a SpaceWire network. It does this by encapsulating the CCSDS Packet in a SpaceWire packet, transferring it across the SpaceWire network and then extracting the CCSDS Packet at the target. This standard may be tailored for the specific characteristic and constrains of a space project in c
28、onformance with ECSS-S-ST-00. DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 6 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. For dated references, subsequent amendments to, or revisi
29、on of any of these publications do not apply. However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the more recent editions of the normative documents indicated below. For undated references, the latest edition of the publication referr
30、ed to applies. EN reference Reference in text Title EN 16601-00-01 ECSS-S-ST-00-01 ECSS system - Glossary of terms EN 16603-50-12 ECSS-E-ST-50-12 Space engineering - SpaceWire - Links, nodes, routers and networks EN 16603-50-51 ECSS-E-ST-50-51 Space engineering - SpaceWire protocol identification CC
31、SDS 133.0-B-1 Space Packet Protocol, Blue Book DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 7 3 Terms, definitions and abbreviated terms 3.1 Terms defined in other standards For the purpose of this Standard, the terms and definitions from ECSS-S-ST-00-01 and ECSS-E-ST-50-51 apply. 3.2 Terms sp
32、ecific to the present standard None. 3.3 Abbreviated terms The following abbreviations are defined and used within this standard: Abbreviation Meaning CCSDS Consultative Committee for Space Data Systems EEP error end of packet EOP end of packet SpW SpaceWire 3.4 Conventions In this document hexadeci
33、mal numbers are written with the prefix 0x, for example 0x34 and 0xDF15. Binary numbers are written with the prefix 0b, for example 0b01001100 and 0b01. Decimal numbers have no prefix. DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 8 4 Principles 4.1 Purpose The CCSDS Packet Transfer Protocol ha
34、s been designed to encapsulate a CCSDS Space Packet into a SpaceWire packet, transfer it from an initiator to a target across a SpaceWire network, extract it from the SpaceWire packet and pass it to a target user application. This protocol does not provide any means for ensuring delivery of the pack
35、et nor is it responsible for the contents of the packet being a CCSDS Space Packet. The CCSDS Space Packet Protocol is defined in the following document: CCSDS 133.0-B-1 Space Packet Protocol. Blue Book. Issue 1. September 2003 or a later issue Figure 4-1 illustrates the location of the CCSDS Space
36、Packet transfer Protocol in a typical onboard protocol stack. The CCSDS Space Packet transfer Protocol provides a unidirectional data transfer service from a single source user application to a single destination user application through a SpaceWire network. CCSDS Space packetTransfer Protocol User
37、ApplicationSpaceWire NetworkSpaceWire NetworkCCSDS Space packetTransfer Protocol User ApplicationFigure 4-1: Protocol configuration 4.2 Protocol features The CCSDS Space Packet transfer Protocol provides the capability to transfer CCSDS Space Packets between onboard users of a SpaceWire network. The
38、 CCSDS space packets may be of variable length or fixed size at the discretion of the user and may be submitted for transmission at variable intervals. The DIN EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 9 composition of the CCSDS space packet is under the responsibility of the user application a
39、nd is not checked by the CCSDS space packet transfer protocol. 4.3 Services The CCSDS Space Packet Transfer Protocol provides users with data transfer services. The point at which a service is provided by a protocol entity to a user is called a Service Access Point. A Service Access Point of the Spa
40、ce Packet Transfer Protocol is identified by a SpaceWire address and each service user is also identified by a SpaceWire Address. Service data units submitted to a Service Access Point are processed in the order of submission. Implementations may be required to perform flow control at a Service Acce
41、ss Point between the service user and the service provider. However, this standard does not recommend a scheme for flow control between the user and the provider. The followings features are offered by the data transfer service defined in this Standard: Unidirectional (one way) data transfer service
42、. Asynchronous Service. There are no predefined timing rules for the transfer of service data units supplied by the service user. The user may request data transfer at any time it desires, but there may be restrictions imposed by the provider on the data generation rate. Unconfirmed Service: the sen
43、ding user does not receive confirmation from the receiving end that data has been received. Incomplete Services. The services do not guarantee completeness, nor do they provide a retransmission mechanism. SDU format: the service does not check the format of the submitted CCSDS Space packet. Non sequ
44、ence Preserving Service. The sequence of service data units supplied by the sending user may not be preserved through the underlying network The end-to-end quality-of-service provided to service users is the one that is provided by the underlying SpaceWire network. The Space Packet Transfer Protocol
45、 does not provide any mechanisms for guaranteeing a particular quality-of-service; it is the responsibility of implementing organizations to ensure that the end-to-end performance of a particular service instance meets the requirements of its users. Sequence preservation of packets in a SpaceWire ne
46、twork is dependent on the underlying network topology and configuration. Topologies and configurations which allow only a single route from the source to the destination, i.e. configurations that are not using group adaptive routing, are sequence preserving. DIN EN 16603-50-53:2015-05 EN 16603-50-53
47、:2015 (E) 10 4.4 Guide to this document Clause 4 presents the purpose, protocol features and an overview of the services the CCSDS packet transfer protocol offers. Clause 5.1 defines the service parameters. Clause 5.2 specifies the service primitives provided by the protocol. Clause 5.3 defines the
48、protocol fields used in the CCSDS packet transfer protocol packets. Clause 5.4 specifies the format of the packets used by the CCSDS packet transfer protocol. Clause 5.5 specified the action of the CCSDS packet transfer protocol. Annex A lists the managed parameters associated with this protocol. DI
49、N EN 16603-50-53:2015-05 EN 16603-50-53:2015 (E) 11 5 Requirements 5.1 Service parameters 5.1.1 CCSDS packet a. The CCSDS packet parameter, intended as the service data unit transferred by the CCSDS packet transfer service, shall be the CCSDS Space Packet as defined in CCSDS 133.0-B-1 Space Packet Protocol, Blue Book, Issue 1, September 2003. 5.1.2 Packet length a. The value of the packet length shall be equal to at least 7 and at most 65542 octets. b. Individual project organizations may establish the maximum length
