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Intermittently Connected Mobile Ad Hoc Networks - from Routing to Content Distribution (Paperback, 2011)
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Intermittently Connected Mobile Ad Hoc Networks - from Routing to Content Distribution (Paperback, 2011)
Series: SpringerBriefs in Computer Science
Expected to ship within 10 - 15 working days
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In the last few years, there has been extensive research activity
in the emerging area of Intermittently Connected Mobile Ad Hoc
Networks (ICMANs). By considering the nature of intermittent
connectivity in most real word mobile environments without any
restrictions placed on users' behavior, ICMANs are eventually
formed without any assumption with regard to the existence of a
end-to-end path between two nodes wishing to communicate. It is
different from the conventional Mobile Ad Hoc Networks (MANETs),
which have been implicitly viewed as a connected graph with
established complete paths between every pair of nodes. For the
conventional MANETs, mobility of nodes is considered as a challenge
and needs to be handled properly to enable seamless communication
between nodes. However, to overcome intermittent connectivity in
the ICMANs context, mobility is recognized as a critical component
for data communications between the nodes that may never be part of
the same connected portion of the network. This comes at the cost
of addition considerable delay in data forwarding, since data are
often stored and carried by the intermediate nodes waiting for the
mobility to generate the next forwarding opportunity that can
probably bring it close to the destination. Such incurred large
delays primarily limit ICMANs to the applications, which must
tolerate delays beyond traditional forwarding delays. ICMANs belong
to the family of delay tolerant networks (DTNs). However, the
unique characteristics (e.g., self-organizing, random mobility and
ad hoc based connection) derived from MANETs distinguish ICMANs
from other typical DTNs such as interplanetary network (IPN) with
infrastructure-based architecture. By allowing mobile nodes to
connect and disconnect based on their behaviors and wills, ICMANs
enable a number of novel applications to become possible in the
field of MANETs. For example, there is a growing demand for
efficient architectures for deploying opportunistic content
distribution systems over ICMANs. This is because a large number of
smart handheld devices with powerful functions enable mobile users
to utilize low cost wireless connectivities such as Bluetooth and
IEEE 802.11 for sharing and exchanging the multimedia contents
anytime anywhere. Note that such phenomenal growth of content-rich
services has promoted a new kind of networking where the content is
delivered from its source (referred to as publisher) towards
interested users (referred to as subscribers) rather than towards
the pre-specified destinations. Compared to the extensive research
activities relating to the routing and forwarding issues in ICMANs
and even DTNs, opportunistic content distribution is just in its
early stage and has not been widely addressed. With all these in
mind, this book provides an in-depth discussion on the latest
research efforts for opportunistic content distribution over
ICMANs.
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