Popularityaware mobile content management: When is knowing less better? Abstract   Changes in mobility patterns and the topology of mobile networks, the capability of mobile devices to directly serve content, and the deployment of the Internet of Things (IoT) where mobile sensors and actuators directly provide content and services, has changed the requirements and goals of traditional IP mobility management. As a result, IP mobility management and mobile content management are becoming increasingly interdependent. This paper presents and evaluates a popularityaware lossy resolution procedure for mobility management that decides, based on its popularity and mobility, which mobile content (or mobile devices) should be tracked by the resolution system and which should be located using broadcast queries. The procedure supports the aggregation of multiple location updates in a single update message. Our analytical model jointly captures the tradeoffs that influence the performance: the tradeoff between the cost for location updates and the cost for broadcasting location queries, and the tradeoff between the reduced update cost that is achieved with aggregation and the increased delay, which results in outdated location information. Investigations show how the proposed approachxe2x80x99s performance, in terms of reduced signaling cost for resolution and reduced memory requirements for resolution tables, depends on the content mobility, aggregate content request rate, broadcasting cost, location update aggregation, content popularity, and correlation between content popularity and mobility. The investigations include experiments with campus YouTube traces and global YouTube video popularity.

Content Retrieval while Moving Across IP and NDN Network Architectures Research on Future Internet has gained traction in recent years, with a variety of cleanslate network architectures being proposed. The realization of such proposals may lead to a period of coexistence with the current Internet, creating a heterogeneous Future Internet. In such a vision, mobile nodes (MNs) can move across access networks supporting different network architectures, while being able to maintain the access to content during this movement. In order to support such scenarios, this paper proposes an internetwork architecture mobility framework that allows MNs to move across different network architectures without losing access to the contents being accessed. The usage of the proposed framework is exemplified and evaluated in a mobility scenario targeting IP and NDN network architectures in a content retrieval use case. The obtained results validate the proposed framework while highlighting the impact on the overall communication between the MN and content source.