Before revision: We consider a multi-channel wireless network with user-level CSMA, which consists in running one instance of the CSMA algorithm per active user at each MAC interface . Specifically, each such instance attempts to access a randomly chosen radio channel after some random time and transmits a packet of the corresponding user if the channel is sensed idle .
After revision: We consider a multi-channel wireless networks, accounting for the random nature of traffic . Specifically, each such instance attempts to access a randomly chosen radio channel after some random time and transmits a packet of the corresponding user if the channel is sensed idle .