Design and Performance Evaluation of a Price-Based Cache Algorithm for Mobile Web Services

摘要

Due to the vast size, real-time requirement, QoS consideration, etc., of mobile devices, techniques like WAP and i-mode are developed to satisfy the need of surfing the WWW using mobile devices. However, the lack of bandwidth may make a lot of media services become out of quality because the excessive losses result from network congestion. Web cache is a better and practical way to deal with this problem. In this paper, we propose a price-based cache algorithm to achieve the following two goals: (1) to increase the reward of media objects for mobile service providers and (2) to reduce media transmission time for mobile service users.