CTB-MAC: Cluster-Based TDMA Broadcast MAC Protocol for Mobile Ad-Hoc Network

We introduce a simple approach to broadcast real time voice traffic with clustering and Time Division Multiple Access (TDMA). Time is divided in sequence of super-frame. Cluster head selects a frame from super-frame which supposed to be the unique frame than its neighbor clusters. So while one cluster is on transmission schedule basically there won´t be any other neighbor cluster on transmission. The overlapping clusters results some nodes to hear more than one Cluster-Head (CH) so are called relay nodes. Relay nodes always relay message from one CH to other. Before going for transmissions relay nodes and source nodes need to reserve data slot. Transmitting nodes use a contention slot to reserve data slot. Since the network is divided in overlapping clusters and no neighbor cluster has same frame and all the transmitting nodes in a frame has their own data slot we are assured that there is no collision in data slot which will save considerable amount of power moreover every nodes does not need to transmit, only relay node transmits a packet for a cluster and the CH broadcast it to its range. Since minimal number of nodes takes part in transmitting of a packet, all the network resources could be saved as well.