Popularity-aware Intra-domain Mobility Management

Abstract

We present and evaluate a popularity-aware intra-domain mobile content management model based on which the Name Resolution System (NRS) is updated with the current location of mobile content only when the content has sufficiently high popularity and sufficiently low mobility. Specifically, the current location of mobile content is updated only when the overall cost of location updates is smaller than the cost of broadcasting location queries. On the other hand, the location of content with low popularity and high mobility that is not tracked by the NRS is discovered by broadcasting location queries. Our evaluation investigates how the performance gains of the proposed model, in terms of reduced total signaling cost and reduced memory requirements of the NRS, depend on the aggregate content request rate, content mobility (rate of content location changes), number of content objects, content popularity, and correlation between content popularity and mobility.