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

Algorithm 1

Channel coordinator selection algorithm.

(1)	while in CCHI vehicles receive WSA’s and broadcast their location information
(2)	Select an SCH to be tuned to
(3)	Append selected SCH and location information to all BSM’s and broadcast
(4)	while periodic safety messages are received
(4a)	for each vehicle
(4b)	for each advertised
(4c)	Compute
(4d)	Append to the BSM and then broadcast
	end for
(4e)	if (BSM is received) then
	for each similar
(4f)	if (all the values are  greater than the local average ) then
(4g)	Vehicle is the channel coordinator
(4h)	else
(4i)	Vehicle is just a member of its selected cluster.
(4j)	end if
	end for
(4k)	end if
(4l)	end for
(4m)	end while
(5)	end while