A Consideration on the Enhancement of Cache Efficiency in CVCMM-MQ with Priority Estimation Methods in VCDS-CT

Abstract

Cached video content management methods with multiple quality (CVCMM-MQ) by using priority estimation have been studied in video content delivery system based on cache type(VCDS-CT). However, they have some practical problems of decreasing the efficiency for the change of the access. Then, the improvement method of CVCMM was proposed for them. In this study, considering decrease of the priority order due to the estimation errors by using estimation methods in the priority values, a new estimation method is proposed to improve the cache efficiency. The adaptive method with the approximation estimations is considered. By the simulation experiments, that the efficiency in the proposed method is evaluated, and it is revealed that the mechanism for decreasing the cache efficiency due to the estimation errors.