查看标准

请选择需要导出的字段:

BS EN 12795-2003

道路运输和交通远程信息处理技术 专用短程通信(DSRC) DSRC数据链路层 媒体存取和逻辑链路控制

Road transport and traffic telematics Dedicated Short Range Communication (DSRC) DSRC data link layer:medium access and logical link control Telematique de la circulation et du Transport routier. Communication a courte portee. Couche de liaison de controle d'acces au media et de controle logique de liaison Supersedes DD ENV 12795:1997;

适用范围:This European Standard: —defines the Data Link Layer of DSRC; —is positioned with respect to other related standards by the layers defined in OSI Basic Reference Model [EN ISO/IEC 7498-1] as adopted for DSRC; —supports broadcast and half-duplex transmission modes; —supports a variety of fixed equipment configurations. It supports configurations where one fixed equipment communicates with one mobile equipment unit, as well as configurations where one fixed equipment can communicate with several mobile equipment units; —takes into account that the mobile equipment communicates with the fixed equipment while passing through a limited communication zone; —defines neither any specific configuration nor the layout of the communication zone; —does not define to what extent different instances of fixed equipment, operating in the vicinity of each other, need to be synchronised with each other; —defines parameters to be used in negotiation procedures taking place between fixed equipment and mobile equipment. By defining two distinct sublayers, namely the medium access control sublayer and the logical link control sublayer, this standard defines: a) medium access control procedures for the shared physical medium; b) addressing rules and conventions; c) data flow control procedures; d) acknowledgement procedures; e) error control procedures; f) services provided to application layer. The MAC sublayer is specific to the DSRC. The LLC services offered are unacknowledged and acknowledged connectionless services based on [ISO/IEC 8802-2]. Figure 1 illustrates the global data flow between the elements of the DSRC stack, (Physical, Data Link and Application Layers) and the application. NOTE For definitions of the terms used in Figure 1 see [EN ISO/IEC 7498-1].

实施日期: 2003-05-30

中标分类号: R07 - 公路、水路运输 - 电子计算机应用

ICS分类号: 35.100.20,35.240.60 - 信息技术、办公设备

标准组织: BS - 英国标准学会标准

全文来源: WF

英文关键词: Road transport Information exchange Data transmission Open systems interconnection Data link layer (OSI) Data processing Teleprocessing Traffic Data layout Addresses (data processing) Mobile communication systems Binary digits Private networks

语种: 汉语

页数: 50

标准解读