scope:

The present document specifies radio parameters, data link services and protocol data units, and application services and protocol data units which are necessary for the efficient use of the radio spectrum and for the purpose of DSRC based applications. This includes methods of measurements for verifying the limits stated in the present document.

The present document applies to 5,8 GHz Short Range Devices (SRDs) for use in Road Transport Traffic and Telematics (RTTT):

• with a Radio Frequency (RF) output connection and specified antenna or with an integral antenna;

• for data transmission only;

• operating on radio frequencies in the 5 725 MHz to 5 875 MHz Industrial, Scientific and Medical (ISM) band.

The applicability of the present document covers both the Road Side Units (RSUs) and the On Board Units (OBUs) with transceivers and transponders.

The present document does not necessarily include all the characteristics which may be required by a user, nor does it necessarily represent the optimum performance achievable.

The present document complies with CEPT/ECC/DEC(02)01 [1] and CEPT/ERC Recommendation 70-03 [2]. It is a specific standard covering various RTTT applications. The RTTT data rate specified in the present document is:

• RTTT systems using down and up link data rate of up to 1 Mbit/s.

For non-harmonized parameters, national regulatory conditions may apply regarding the type of modulation, channel/frequency separation, maximum transmitter output power/effective radiated power, equipment marking as a condition of the issue of an individual or general license, or, as a condition of use under license exemption.

Additional standards or specifications may be required for equipment such as that intended for connection to the Public Switched Telephone Network (PSTN) or other systems.