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The role of the Internet has been changed to a content oriented data sharing network. This new paradigm requires a major transformation of the current Internet architecture, which leads to the birth of the Information Centric Networking (ICN) concept in today's Internet. In this article, we propose an ICN architecture named Cache Aware Target identification (CATT) and introduce the architecture by focusing on two of its major components: routing and content caching. For each component of the CATT, Potential Based Routing (PBR) and topology aware caching policy are proposed respectively, and their cooperated operation is illustrated. Due to the synergy effect of both components, the CATT provides an efficient solution of content dissemination in the ICN environment.
“ POTENTIAL BASED ROUTING (PBR)
Since Chalermek et al. introduced the directed
diffusion method [9], which was one of the sub
projects in SCADDS 1 (Scalable Coordination
Architectures for Deeply Distributed Systems), a
family of field or potential based approaches
have been used for nearly a decade in various
network applications such as traffic aware rout-
ing, service discovery, load balancing, and data
aggregation.
The key idea of these approaches is to define
a scalar value associated with application interest
on individual network elements to form a poten-
tial field, as shown in Fig. 2. Then, a query or
traffic is forwarded following in the direction of
maximizing or minimizing the potential value.”
[9] R. G. C. Intanagonwiwat and D. Estrin, "Directed Diffu-
sion: A Scalable and Robust Communication Paradigm
for Sensor Networks," Proc. 6th Annual Int'l. Conf.
Mobile Computing and Networking, Boston, MA USA,
Aug. 2000.
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