按照标准IEEE 802.20采用通信的ITS CALM无线移动宽带

[中文适用范围]： 本国际标准规定了适用于使用符合 IEEE 802.20 空中接口和 ITU-R M.1801 推荐的协议规范的移动无线宽带 (MWB) 技术的 CALM 的选项，并规定了管理接口要求。 CALM 链路需要车辆与路边、车辆之间以及移动设备与固定基础设施点之间的中距离和长距离准连续、长时间和短期通信。 在可行的情况下，本国际标准是参考适当的现有标准制定的，并经选择采用。 提供了所需的区域差异。 应用特定的上层不包含在本国际标准中，但将由应用标准驱动。 [外文原描述]： ISO 29283:2011 specifies the options appropriate for CALM using mobile wireless broadband (MWB) techniques conforming to the IEEE 802.20 air interface and protocol specification recommended by ITU-R M.1801, and specifies the management interface requirements. CALM links are required for quasi-continuous, prolonged and short duration communications between vehicles and the roadside, between vehicles, and between mobile equipment and fixed infrastructure points, over medium and long ranges. Wherever practicable, ISO 29283:2011 has been developed by reference to suitable extant standards, adopted by selection. Required regional variations are provided. Application specific upper layers are not included in ISO 29283:2011, but will be driven by application standards.