CMD: A Multichannel Coordination Scheme for Emergency Message Dissemination in IEEE 1609.4

Table 2

Notations used in channel coordinator selection.

Acronym	Description
	An advertised SCH which a vehicle intends to switch to during the SCHI
	Any other advertised SCH apart from the one which a given vehicle intends to switch to during the SCHI
	An SCH coordinator vehicle
	The channel coordinator for forwarding messages from to
	The number of advertised SCHs to provide nonsafety services
	The number of vehicles expecting to switch to
	The V2V separation distance.
	The average for a given vehicle considering the vehicles expecting to switch to
	The LAD for the coordinator vehicle in to
	The coordination fitness value for a given vehicle considering the to