This Technical Specification specifies the general rules for an on-board data communication system between the different systems that may be used within public transport vehicles. This includes operational support systems, passenger information systems, fare collection systems, etc.<\/p>\n
This Technical Specification describes:<\/p>\n
the requirements for an on board IP network;<\/p>\n<\/li>\n
the overview architecture and components for an IP based on-board network;<\/p>\n<\/li>\n
the modular structure of the network architecture;<\/p>\n<\/li>\n
the Service Oriented Architecture (SOA) approach, and approach to defining services.<\/p>\n<\/li>\n<\/ul>\n
Systems directly related to the safe operation of the vehicle (including propulsion management, brake systems, door opening systems) are excluded from the scope of this Technical Specification and are dealt with in other standardization bodies. However, the architecture described in this Technical Specification may be used for support services such as safety information messages. Interfaces to safety-critical systems should be provided through dedicated gateways with appropriate security provisions; for the purposes of this Technical Specification, these are regarded as simply external information sources.<\/p>\n
This Technical Specification is designed primarily for vehicles with a fixed primary structure, where networks can be installed on a permanent basis and the system configuration task consists largely of the integration, adjustment or removal of the functional end systems that produce and\/or consume data. Public transport vehicles consisting of units linked temporarily for operational purposes (specifically, trains in which individual engines, cars or consists are routinely connected and disconnected) require additional mechanisms to enable the communications network itself to reconfigure. Such mechanisms are provided through other standards, notably the IEC 61375<\/span> <\/span> series. (See also 5.9<\/span>.)<\/p>\n Public transport. Road vehicle scheduling and control systems – System and Network Architecture<\/b><\/p>\nPDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 4<\/td>\n Contents Page <\/td>\n<\/tr>\n \n 5<\/td>\n European foreword <\/td>\n<\/tr>\n \n 6<\/td>\n Introduction <\/td>\n<\/tr>\n \n 8<\/td>\n 1 Scope
2 Terms and definitions <\/td>\n<\/tr>\n\n 9<\/td>\n Figure 1 \u2014 Relationship between terms (example) <\/td>\n<\/tr>\n \n 10<\/td>\n 3 Symbols and abbreviations
4 Design principles
4.1 Introduction <\/td>\n<\/tr>\n\n 11<\/td>\n 4.2 Design goals
4.2.1 Enabling communications
4.2.2 Enabling interoperability
4.2.3 Ease of configuration
4.2.4 Quality of monitoring
4.2.5 Maintainability
4.2.6 Migration
4.2.7 Supporting fleet changes <\/td>\n<\/tr>\n\n 12<\/td>\n 5 Network architecture
5.1 Introduction
5.2 Network overview
5.3 Gateways to other networks <\/td>\n<\/tr>\n\n 13<\/td>\n Figure 2 \u2014 A generic on board system with an external network
5.4 IP addressing
5.4.1 General addressing considerations
5.4.2 Address space
5.4.2.1 Address space in IPv4 <\/td>\n<\/tr>\n\n 14<\/td>\n Table 1 \u2014 Address space options
5.4.2.2 Address space in IPv6
5.4.3 Manual assignment
5.4.4 Automatic assignment
5.4.4.1 DHCP assignment <\/td>\n<\/tr>\n\n 15<\/td>\n 5.4.4.2 Self-assignment
5.4.4.3 Mixed assignment
5.5 Name registration and resolution of modules
5.5.1 Domain name options <\/td>\n<\/tr>\n\n 16<\/td>\n Figure 3 \u2014 DNS architecture and Multicast DNS architecture (example)
5.5.2 Unicast Domain Name System (DNS)
5.5.3 Multicast Domain Name System (mDNS) <\/td>\n<\/tr>\n\n 17<\/td>\n Table 2 \u2014 Module classes
5.6 Communication Protocols
5.6.1 The IP suite
5.6.2 The TCP framework
5.6.2.1 Transport Control Protocol (TCP)
5.6.2.2 HyperText Transfer Protocol (HTTP)
5.6.2.3 File Transfer Protocol (FTP)
5.6.2.4 Secure Shell (SSH) <\/td>\n<\/tr>\n\n 18<\/td>\n 5.6.3 The UDP framework
5.6.3.1 User Datagram Protocol (UDP)
5.6.3.2 Real-time Transport Protocol (RTP)
5.6.3.3 Network Time Protocol (NTP) \/ Simple Network Time Protocol (SNTP)
5.7 Communication methods
5.7.1 Data exchange options
5.7.2 Request\/Response
5.7.3 Subscription <\/td>\n<\/tr>\n\n 19<\/td>\n 5.7.4 Data Multicast
Figure 4 \u2014 Broadcast vs. Multicast (example)
5.8 Network security <\/td>\n<\/tr>\n\n 20<\/td>\n 5.9 Considerations on coupled vehicles
6 Service architecture
6.1 Service oriented architecture (SOA)
6.2 Service Information
6.2.1 Service framework options <\/td>\n<\/tr>\n\n 21<\/td>\n 6.2.2 Manual configuration
6.2.3 Configuration using DNS-SD
6.2.3.1 Use of DNS-SD
6.2.3.2 Service registration and naming <\/td>\n<\/tr>\n\n 22<\/td>\n 6.2.3.3 Record maintenance
6.2.3.4 Providing additional information
Table 3 \u2014 Attributes and example usage
6.3 Communication Types
6.3.1 Event Triggered Data <\/td>\n<\/tr>\n\n 23<\/td>\n 6.3.2 Streaming of Data
6.3.3 High Frequency Data
6.4 Data Structure
6.4.1 Data structure options
6.4.2 XML
6.4.3 JSON <\/td>\n<\/tr>\n\n 24<\/td>\n Annex A (informative) Example usages
A.1 Typical vehicle network architecture
Figure A.1 \u2014 Example of on board IP network with services <\/td>\n<\/tr>\n\n 25<\/td>\n A.2 Function and service groups
A.3 Example of a service record <\/td>\n<\/tr>\n\n 26<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2015<\/td>\n 30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":231313,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[742,2641],"product_tag":[],"class_list":{"0":"post-231308","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-43-040-15","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/231308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/231313"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=231308"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=231308"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=231308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}