An efficient transmission mode selection based on reinforcement learning for cooperative cognitive radio networks

Abstract

Cooperative communication systems use cooperative relays for transmitting their data packets to the destination. Cooperative communication schemes having all relays participating in transmission may cause unnecessary wastes of most valuable spectrum resources. So it is mandatory to effectively select a transmission mode for cooperative cognitive radio networks (CCRNs). In this paper, an efficient transmission mode scheme based on Q-learning algorithm is proposed. State, action, and reward are defined to achieve a good performance on time delay and energy efficiency in data transmission as well as the interference to primary users during secondary users transmission. The proposed scheme selects an optimal action on the networks environment to maximize the total revenue of the multilateral metric. The simulation result shows that the proposed scheme can efficiently support the determination for the transmission mode and outperforms conventional schemes for a single metric in CCRNs.

Fair Dynamic Spectrum Allocation Using Modified Game Theory for Resource-Constrained Cognitive Wireless Sensor Networks

“…U w is the value of Equation (18) with the optimal solution of the problem given by Equations (19) and (20). In a similar way, H w is the value of Equation (19) with the optimal solution of the problem defined by Equations (18) and (20).…”

“…In a similar way, H w is the value of Equation (19) with the optimal solution of the problem defined by Equations (18) and (20). That is, U w is obtained by solving the optimization problem given by Equations (19) and (20), and H w is yielded by solving the optimization problem given by Equations (18) and (20). Then, U w and H w act as upper bounds of the two objective functions.…”

“…Recently, a few studies (such as [19,20]) have mentioned the effectiveness of cooperative approaches (especially, cooperative spectrum sensing).…”

“…Negotiation in each coalition for each i ∈ V Negotiate(i, coalition[i], X) if X satisfies Equation (20), go to Step 4; else go to Step 2.…”

Security Scheme Based on Parameter Hiding Technic for Mobile Communication in a Secure Cyber World

“…Since network traffics have exponentially increased as people have started to use more than just one mobile device, they has become more important [4][5][6]. Release 12 is currently underway in LTE standards, and LTE networks where part of Release 10 technologies are applied based on Release 9 can be classified as a LTE advanced technology introduction country [7].…”