Intelligent Transport Systems (ITS); European profile standard for the physical and medium access control layer of Intelligent Transport Systems operating in the 5 GHz frequency band (V1.1.0)
"The present document specifies the European profile in line with [i.8] of the physical and medium access control sub-layer of 5 GHz intelligent transport systems (ITS) using IEEE 802.11 [3] as the base standard. It covers the frequency ranges: ITS-G5A: Operation of ITS-G5 in European ITS frequency bands dedicated to ITS for safety related applications in the frequency range 5@875 GHz to 5@905 GHz. ITS-G5B: Operation in European ITS frequency bands dedicated to ITS non- safety applications in the frequency range 5@855 GHz to 5@875 GHz. ITS-G5C: Operation of ITS applications in the frequency range 5@470 GHz to 5@725 GHz. One of the additionally selected functionalities being an essential part of the present document is ""communication outside the context of a BSS"" as currently being developed by IEEE 802.11 Task Group p [3]. Communication outside the context of a BSS enables exchange of data frames between stations that are not members of a BSS. This type of communication allows for immediate exchange of data frames@ avoiding the latency associated with the establishment of a BSS. The present document covers the following IEEE 802.11 [3] services: ? spectrum management services (DFS@ uniform spreading) for ITS-G5C; ? transmit power control; ? traffic differentiation and QoS support; ? selected MAC data services: DCF@ EDCA@ fragmentation/de-fragmentation (the latter only for ITS-G5C); ? selected MAC control services: ACK@ RTS@ CTS; ? selected MAC management services: selected action frames (spectrum management action frames); ? OFDM PHY. The profile excludes the following IEEE 802.11 [3] features: ? association services; ? access control and data confidentiality services; ? higher-layer timer synchronization; ? selected MAC data services@ i.e. PCF@ HCF HCCA; ? selected MAC control services@ i.e. PS-Poll@ CF-End@ CF-End + CF-Ack@ Block Ack Request/Block Ack; ? selected MAC management services@ i.e. beacon@ ATIM@ disassociation@ association request esponse@ re-association request esponse@ probe request esponse@ authentication@ de-authentication@ selected action (measurement request eport); ? power management services."