  As mobile services are shifting from "connection-centric" communications to
"content-centric" communications, content-centric wireless networking emerges
as a promising paradigm to evolve the current network architecture. Caching
popular content at the wireless edge, including base stations (BSs) and user
terminals (UTs), provides an effective approach to alleviate the heavy burden
on backhaul links, as well as lowering delays and deployment costs. In contrast
to wired networks, a unique characteristic of content-centric wireless networks
(CCWNs) is the mobility of mobile users. While it has rarely been considered by
existing works in caching design, user mobility contains various helpful side
information that can be exploited to improve caching efficiency at both BSs and
UTs. In this paper, we present a general framework on mobility-aware caching in
CCWNs. Key properties of user mobility patterns that are useful for content
caching will be firstly identified, and then different design methodologies for
mobility-aware caching will be proposed. Moreover, two design examples will be
provided to illustrate the proposed framework in details, and interesting
future research directions will be identified.
