A Consideration on a Cached Video Management Method with Multiple Quality for Access Change

Abstract

Cached video content management methods (CVCMM) by using priority estimation have some problems of decreasing the efficiency for the change of the access numbers in video content delivery system with multiple quality. Then, the improvement method of CVCMM is proposed for them In this study, in particular, since the priority is calculated less than the actual value by the access change due to the estimation errors in the case of decreasing in a monotone manner, the caching efficiency decreases. Approximation estimation methods by the quadratic function and the exponential function are used. In addition, the estimation value is compared with the content priority of the lowest rank in the previous period, and that value is determined as the threshold value. By simulation experiments, it is revealed that the proposed method is more effective than the conventional method.