本文件提供了名为“ITS-LTE-D2D”的通信接口（CI）的ITS站（ITS-S）接入层规范。 本规范适用于LTE-D2D通信，该通信用于将ITS-SU的信息传播到其他ITS-SU，其中这些ITS-SU可以是车辆ITS-SU、路边ITS-SU或个人ITS-SU，如ISO 21217所规定。它提供了来自相关ETSI/3GPP版本及其- ISO 24102中的电厂管理标准，以实现这一目标。 ITS-LTE-D2D CI基于演进的通用地面无线接入网络（E-UTRAN）设备对设备（LTE-D2D）技术，该技术在3GPP第13版中标准化。 本文件通过参考3GPP中的相应规范，并通过指定ISO 21218中规定的CIs的通信适配层（CAL）和管理适配实体（MAE）的细节，使LTE-D2D技术能够在ITS站中用作ITS接入技术。

This document provides specification on the ITS-Station (ITS-S) access layer for a communication interface (CI) named "ITS-LTE-D2D". This specification is appropriate in the context of LTE-D2D communications that are being used for the dissemination of ITS information from an ITS-SU to other ITS-SUs, where these ITS-SUs can be either vehicle ITS-SUs, roadside ITS-SUs, or personal ITS-SUs, as specified in ISO 21217. It provides a combination of options from relevant ETSI/3GPP releases and ITS-station management standards in ISO 24102 to enable and achieve this objective. ITS-LTE-D2D CIs are based on the evolved-universal terrestrial radio access network (E-UTRAN) device-to-device (LTE-D2D) technology standardized at 3GPP Release 13. This document enables the use of the LTE-D2D technology as an ITS access technology in an ITS station by reference to respective specifications from 3GPP, and by specifying details of the Communication Adaptation Layer (CAL) and the Management Adaptation Entity (MAE) of CIs specified in ISO 21218.