Impact of Security on QoS in Communication Network

With the development of both economy and society,service always requires higher and higher security and quality.However, since security services always induce extra resource consumption, QoS may descend evidently. It is important and essential to find optimal solutions that can not only achieve enough level of security, but also meet as high QoS as system can. In this paper, we propose an entity, named QoS amending function, which is used to evaluate the end-to-end delay induced by security in communication network. Moreover, an adaptive immune algorithm is used to obtained optimal parameters on both security and QoS. Simulations show that the proposed model is effective to achieve optimal balance between security and QoS.