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Priority Users in a Multi-Channel System

We are considering an environment with an unknown population of users, a portion of who has high priority. The assumed environment contains a number of transmission channels among which each user may select to direct his/her transmission. We allow dynamic channel selection by each one of the high priority users, towards the reduction of their accessing delays. We deploy a class of limited sensing random access algorithms for all the users in the system and analyze performance in terms of throughputs and reduced delays. The accessing of the high priority users is accelerated significantly at the expense of some throughput reduction.