A Multiconstrained QoS-Compliant Routing Scheme for Highway-Based Vehicular Networks

Algorithm 3

Cluster Head Election Algorithm.

1: : Current time;

2: ;

3: ;

4: QoS () QoS ();

5: Foreach vehicle   Do

6: if ((Last neighbor arrival time + WaitTime ) Then

7: Broadcast (, );

8: Flag vehicle as having best QoS value;

9: end If

10: endDo

11: Upon receiving at   ( (, )) where ( and WaitTime not expired ) Do

12: Broadcast ();

13: Flag vehicle as having best QoS value;

14: endDo

15: Upon receiving at   ( (, )) Do

16: .Voted++;

17: endDo

18: If (.Voted ) Then

19: .role Cluster Head;

20: Broadcast to ;

21: endIf

22: Upon receiving at   from   Do

23: .role Cluster Member;

24: endDo