TDMA-based MAC protocols for scheduling channel allocation in multi-channel wireless mesh networks using cognitive radio Maximizing spectrum usage and numerous applications of the wireless communication networks have forced to a high interest of vacant spectrum. Cognitive Radio influences its receiver and transmitter features accurately so that they can utilize the vacant approved spectrum without impacting the functionality of the principal licensed subscribers. The use of various channels assists to address interferences thereby improves the whole network efficiency. The MAC protocol in cognitive radio network explains the spectrum consumption by interacting the multiple channels among the subscribers. In this particular paper we studied traditional TDMA dependent MAC method with dynamically assigned slots. The majority of the MAC protocols suggested in the research operate Common-Control-Channel (CCC) to handle the services between Cognitive Radio end users. Traditional MAC protocol design and operations are implemented by using Multi-Channel-Collection method, a high rate multi-channel time schedule protocol for unbiased real-time data collection and their limitations are studied in Wireless mesh Networks. In this paper, an extensive study of Multi-Channel-Collection with sophisticated techniques for multiple band or frequency range channel allotment and continually synchronized TDMA scheduling are shown in summarized way.