Joint Optimization QoS and Security of Wireless Communication Networks

Abstract

Currently, and quality of service (QoS) are critical for any network. The main purpose of mechanisms is to provide identity authentication, protect information, and ensure that the received information is not tampered with; the aim of QoS is to provide better network services. Security and QoS are not independent of each other. The mechanism affects QoS and vice versa. Both QoS and pose resource management problems and are conflicting when resources are limited. QoS requires mechanisms to ensure proper allocation and service cost, and an inappropriate mechanism will reduce the performance of the quality. Currently, numerous real-time, big data, and diverse applications and services have emerged. Moreover, the number of potential threats is expected to increase dramatically. Therefore, combining QoS and is important. However, as they are difficult to model owing to their internal conflict, QoS and are normally separated or optimized at a particular point using game theory. From the perspective of resource allocation, this study uses optimization method and considers and QoS resource optimization by dividing resources into two categories: space (bandwidth) and time (delay). In order to harmonize the QoS and security, in this paper, the two conflicting terms communication and security are considered as two individual aspect. Furthermore, we construct a model wherein the joint utility is maximized by controlling the packet length. We formulate the utility functions of these two aspects with respect to the effective throughput. The results show that the presented optimization method enables a mobile node to adaptively select specific packet length based on the optimum curve. With the obtained packet length values, the joint utility reach to the maximum so that satisfactory quality can be realized without compromising the security, thereby improving resource utilization.