EPBDRA: Efficient Priority Based Dynamic Resource Allocation in Heterogeneous MIMO Cognitive Radio Networks
S Tamilarasan, Kumar Parasuraman · International journal of intelligent engineering and systems · 2018
The cognitive radio (CR) offers keen solution to the serious scarcity of spectrum in wireless communication.In Multi-Input and Multi-Output (MIMO), primary user recruits some secondary users to cooperatively relay the primary traffic.It is very difficult to assign channel allocation and resource distribution in heterogeneous networks.We propose EPBDRA-CRN technique which provides priority scheduling scheme resulting in more reliability and efficient data transmission.The resource allocation can be done dynamically after ensuring that the nodes satisfy the specified constraints such as fairness, minimum-rate-guarantee, and minimum-delayguarantee.Proposed EPBDRA-CRN algorithm does resource allocation and scheduling for PU and SU to exploit the performance of entire network by reducing the interference at PU.The proposal also supports different rates of transmission with priority, minimizes the transmission delay and improves fairness and provides significant network throughput and avoids collision.We compare EPBDRA-CRN with existing DRA-CRN algorithm using ns-2 simulation.The simulation result shows that the proposal is 27% more efficient than the existing DRA-CRN algorithm.