Limerick

* LIMERIC [4]: controls the message rate according to the following rule: (1 - a)*r + b*(CB[R.sup.target] - CB[R.sup.current]), where r, CB[R.sup.target] and CB[R.sup.current] denote the message rate, target CBR (set to 79%), and the current measured CBR, respectively, and a and b are the algorithm parameters which are set to 0.1 and 0.033, respectively.

Compared to RES, LIMERIC and DCC show a higher PCR when V is small, with better PCR results at higher V, which indicates that slot reservation is more effective than message rate control, when it can be appropriately used.

In contrast, we can see that LIMERIC and DCC have a higher throughput even when V is high, since the message rate control effectively reduces the packet collisions.