ISO 21214:2006 斜角齿轮-精确度ISO系统

标准编号：ISO 21214:2006

中文名称：斜角齿轮-精确度ISO系统

英文名称：Intelligent transport systems — Communications access for land mobiles (CALM) — Infra-red systems

发布日期：2006-07

标准范围

ISO 21214:2006使用820nm至1010nm的红外系统确定空气界面。它为ITS部门使用红外系统的中程、中速无线通信提供协议和参数。这种链路是准连续、长时间或短时间通信所必需的车辆与路边之间、车辆之间以及移动设备与固定基础设施点之间，在中远距离。车辆可以是移动的或静止的。在可行的情况下，ISO 21214:2006是参考适当的现有国际标准制定的，并通过选择采用。提供了所需的区域变化。适当考虑并使用适当通信系统的任何相关部分，例如全球定位系统(GPS)、数字音频广播(DAB)、数字视频广播(DVB)、无线电局域网(RLAN)、数字数据广播(DDB)、TETRA、FM副载波、移动宽带系统s（MBS、W-ATM）、互联网协议和专用短程通信（DSRC）。ISO 21214:2006支持1 Mbit/s至128 Mbit/s的数据速率（可能支持更高的数据速率）；支持最低200公里/小时的车速（接近速度可以是该值的两倍）；定义或引用与链路操作相关的环境参数；支持最远100米的通信距离（可能支持300米至1 000米的更长通信距离）；支持毫秒量级的延时和通信延迟；符合地区/国家监管参数；可能支持其他适用的地区/国家参数。特定应用的要求超出了ISO 21214:2006的范围。这些要求将在CALM管理和上层标准以及应用程序标准中定义。特定于应用的上层不包括在ISO 21214:2006中，但将由应用标准驱动（可能不是特定于技术的）。

ISO 21214:2006 determines the air interface using infra-red systems at 820 nm to 1 010 nm.It provides protocols and parameters for medium-range, medium- to high-speed wireless communications in the ITS sector using infra-red systems.Such links are required for quasi-continuous, prolonged or short communications

• between vehicles and the roadside,
• between vehicles, and
• between mobile equipment and fixed infrastructure points,

over medium and long ranges.Vehicles may be moving or stationary.Wherever practicable, ISO 21214:2006 has been developed by reference to suitable extant International Standards, adopted by selection. Required regional variations are provided.Due account is given to, and use made of, any relevant parts of appropriate communications systems, such as global positioning systems (GPS), digital audio broadcasting (DAB), digital video broadcasting (DVB), radio local area networks (RLANs), digital data broadcasting (DDB), TETRA, FM subcarrier, mobile broadband systems (MBS, W-ATM), internet protocols, and dedicated short range communication (DSRC).ISO 21214:2006

• supports data rates of 1 Mbit/s up to 128 Mbit/s (it may support higher data rates);
• supports vehicle speeds up to a minimum of 200 km/h (closing speeds could be double this value);
• defines or references environmental parameters relevant to link operation;
• supports communication distances up to 100 m (it may support longer communication distances of 300 m to 1 000 m);
• supports latencies and communication delays in the order of milliseconds;
• is compliant to regional/national regulatory parameters;
• may support other regional/national parameters as applicable.

Application-specific requirements are outside the scope of ISO 21214:2006. These requirements will be defined in the CALM management and upper layer standards and in application standards.Application-specific upper layers are not included in ISO 21214:2006, but will be driven by application standards (which may not be technology specific).

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