Distributed Multi-radio Multi -channel Communication using Directional MAC for IoT-based Wireless Networks

In the era of fourth industrial revolution (i.e., industry 4.0), IoT based smart networking uses sustainable technologies for smart cities and smart home. To contribute in such industrial development, in this paper, a Distributed multi-radio multi-channel directional (DM
²
D)-MAC protocol is introduced for IoT-based wireless networks. Directional transmission is responsible for higher antenna gain, reduced interference and spatial reuse with higher data rates. However, such protocol experiences directional hidden terminal problem, deafness and head-of-line blocking problem irrespective of number of channels (i.e., single and multi-channels). As of now, lots of techniques such as synchronization, busy-tone, cooperation among nodes have been used to address those mentioned issues by using a separate data-channel as Common Control Channel (CCC). As a result, due to bottleneck in CCC overall throughput drastically falls. However, we have designed DM2D-MAC protocol as an asynchronous directional dual antenna protocol to overcome the low-throughput complications utilizing the guard-bands as common channels. Therefore, it intercepts the channels of the licensed spectrum as well. With the help of guard-bands and perfect negotiation among the nodes proposed protocol shows a fair raise in overall network throughput and fairness among the use of channels.