Channel Assignment in Wireless Mobile Ad Hoc Networks ◾ 271
persistent (1-persistent and p-persistent) CSMAs belong to the category of CSMA protocols with
collision detection.
Pathmasuntharam et al. [59] identified a new type of exposed terminal problem, known as
the critically exposed terminal problem, which causes severe throughput degradation in ad hoc
networks. ey proposed two possible methods: via scheduling and channel assignment to solve
this problem with further elaboration of the latter scheme. ey also analyzed the proper method
of channel assignment and worked out the minimal channel assignment required to eliminate the
critically exposed terminal problem. ey suggest use of certain clustering approach to achieve the
minimal a ...