As mobile services are shifting from "connection-centric" communications to"content-centric" communications, content-centric wireless networking emergesas a promising paradigm to evolve the current network architecture. Cachingpopular content at the wireless edge, including base stations (BSs) and userterminals (UTs), provides an effective approach to alleviate the heavy burdenon backhaul links, as well as lowering delays and deployment costs. In contrastto wired networks, a unique characteristic of content-centric wireless networks(CCWNs) is the mobility of mobile users. While it has rarely been considered byexisting works in caching design, user mobility contains various helpful sideinformation that can be exploited to improve caching efficiency at both BSs andUTs. In this paper, we present a general framework on mobility-aware caching inCCWNs. Key properties of user mobility patterns that are useful for contentcaching will be firstly identified, and then different design methodologies formobility-aware caching will be proposed. Moreover, two design examples will beprovided to illustrate the proposed framework in details, and interestingfuture research directions will be identified.
展开▼
