GB/T 7421-1987
Replaced
GB/T 20851.2-2019
Active
National standards
GB/T 20851.2-2019 Electronic toll collection—Dedicated short range communication—Part 2:Data link layer
GB/T 20851.2-2019 Electronic toll collection—Dedicated short range communication—Part 2:Data link layer
Basic Information
Standard Code:
GB/T 20851.2-2019
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Computing openness and system interconnectivity
ICS Name:
\nData link layer
Publish Date:
2019-05-10
Implement Date:
2019-12-01
Publisher:
国家市场监督管理总局、中国国家标准化管理委员会
Technical Committee:
全国智能运输系统标准化技术委员会(SAC/TC 268)
Pages:
28 pages
Scope
GB/T 20851的本部分规定了电子收费专用短程通信数据链路层的主要参数、信息帧、专用通信链路建立与撤销、MAC子层、LLC子层的要求。本部分适用于公路和城市道路电子收费系统，自动车辆识别、车辆出入管理等领域可参照使用。
Development Information
Drafting Units:
交通运输部公路科学研究院、中关村中交国通智能交通产业联盟、北京中交国通智能交通系统技术有限公司、北京速通科技有限公司、深圳市金溢科技股份有限公司、北京聚利科技股份有限公司、上海长江智能数据技术有限公司、北京万集科技股份有限公司、深圳成谷科技有限公司、广州市埃特斯通讯设备有限公司
Drafting Persons:
陈丙勋、刘鸿伟、张北海、刘咏平、桂杰、李伟、赵昱阳、周健、吴钊炯、张玉军、卢立阳
Same series standard
GB/T 20851.1-2019 Electronic toll collection—Dedicated short range communication—Part 1:Physical layer
GB/T 20851.3-2019 Electronic toll collection—Dedicated short range communication—Part 3:Application layer
GB/T 20851.4-2019 Electronic toll collection—Dedicated short range communication—Part 4:Equipment application
GB/T 20851.5-2019 Electronic toll collection—Dedicated short range communication—Part 5:Test methods of the main parameters in physical layer
Replace the following standards
Referenced Standards
GB/T 7421-2008 Information technology—Telecommunications and information exchange between systems—High-level data link control (HDLC) procedures
GB/T 15629.2-2008 Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 2: Logical link control
GB/T 20839-2007 Intelligent transport systems—General terminology
GB/T 20851.1-2019 Electronic toll collection—Dedicated short range communication—Part 1:Physical layer
Related Standards
GB/T 7575-1987
Replaced
GB/T 7575-1987 Data communication—High-level data link control procedures—Consolidation of elements of procedures
GB/T 7496-1987
Replaced
GB/T 7496-1987 Information processing systems—Data communication—High-level data link control procedures—Frame structure
GB/T 15124-1994
Active
GB/T 15124-1994 Information processing system—Data communication—Multilink procedures
GB/T 16653-1996
Active
GB/T 16653-1996 ISDN data link layer specification for frame mode bearer services
GB/T 16724.2-1996
Active