Effects of ion and electron bounce motions on ICRF (Ion Cyclotron Range of Frequency) heating mechanism in simple mirror discharge are investigated theoretically. As a preliminary study, we consider a one-dimensional model in which propagating R (Right-handed circularly polarized) and L (Left-handed circularly polarized) waves interact with mirror-trapped ions and electrons. The results show that ion bounce resonance effect with L-wave can occur under the condition that ωci < ω.