A Delay Reduced Scheduling Approach for Fast Spectrum Access in Cognitive Radio

the mounting demand of wireless systems has put a bunch of restrictions on the usage of existing radio spectrum which is limited and expensive resource. Cognitive radio networks (CRN) have emerged as a capable, yet exigent, solution to improve spectrum utilization; credit to the technology of cognitive radios Cognitive radio has been documented as a promising mode to get better spectrum efficiency of wireless communication by exploiting underutilized approved spectrum in temporal, frequency and spatial domains. Cognitive radio intention is to use sparse and limited natural resource proficiently without interrupting the task of licensed users. The data or information is being transmitted in a timely approach in many wireless service applications. In cognitive radio networks, the users experience a delay during the switching to different frequency bands. The planned system addresses this delay as a scheduling trouble. In the Wireless sensor Networks when we distributed the packets while scheduling, there is always energy utilization & delays issues in the data transmission from one end to the other. It is vital that those packets should be scheduled first having highest priority, and the packets that should scheduled at last having lowest priority, means that the order of packets should be accurate . The algorithm used in this work aims at sinking the end-to end delay, and at the equivalent time dropping the ruin of throughput using a dynamic programming approach. Index Terms cognitive radio, scheduling, waiting time, turnaround time, delay. ________________________________________________________________________________________________________