ISO/TS 18234-6-2006
交通和旅行信息(TTI).通过传送协议专家组(TPEG)的数据流的TTI.第6部分:局部参照信息

Traffic and Travel Information (TTI) - TTI via Transport Protocol Expert Group (TPEG) data-streams - Part 6: Location referencing applications

标准号

ISO/TS 18234-6-2006

发布日期

2006年06月

实施日期

废止日期

无

中国标准分类号

R85

国际标准分类号

35.240.60

发布单位

国际标准化组织

适用范围

This Technical Specification establishes the method of location referencing used by TPEG applications such as TPEG-RTM or TPEG-PTI. TPEG applications are specified to contain all the information required by a client TPEG decoder (i.e. both location referencing and event information), to present all the information intended for the end-user when it was originated by the service provider. The term “application” is used in TPEG specifications to describe specific applications, which are at the highest layer of the ISO/OSI protocol stack (ISO/IEC 7498-1). Each TPEG application (e.g. TPEG-RTM) is assigned a unique number that is called the Application IDentification (AID). In this respect TPEG-Loc is not an application, but it is an essential constituent part of an application. Location referencing requires a service provider to give an impression or image to the human end-user of where an event has taken place. This cannot be done easily because the human end-user may or may not be familiar with the location. TPEG-Loc has the added challenge of attempting to be as language independent as possible. This is achieved by the use of TPEG-Loc tables (essentially word oriented data object dictionaries). TPEG-Loc also provides location data in a machine-readable form that allows a “thick” client such as a navigation system to map-match, on-the-fly, to locate the event being described onto a digital map display. NOTE Explicit backwards compatibility with the RDS-TMC location referencing method (EN ISO 14819-3) has NOT been attempted, because RDS-TMC locations are finite in number and must be predetermined. TPEG technology does not suffer from this restriction.

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