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Leveraging Social Networks for P2P Content-Based
File Sharing in Disconnected MANETs
Abstract:
Current peer-to-peer (P2P) file sharing methods in mobile ad hoc networks
(MANETs) can be classified into three groups: flooding-based, advertisement-based,
and social contact-based. The first two groups of methods can easily have
high overhead and low scalability. They are mainly developed for connected
MANETs, in which end-to-end connectivity among nodes is ensured. The third
group of methods adapts to the opportunistic nature of disconnected MANETs but
fails to consider the social interests. SPOON groups common-interest nodes that
frequently meet with each other as communities. It takes advantage of node
mobility by designating stable nodes, which have the most frequent contact with
community members, as community coordinators for intercommunity searching,
and highly mobile nodes that visit other communities frequently as community
ambassadors for intercommunity searching. An interest-oriented file searching

2. scheme is proposed for high file searching efficiency. Additional strategies for file
prefetching, querying-completion, and loop prevention, and node churn
consideration are discussed to further enhance the file searching efficiency.
Existing System:-
 We consider the lower bound analysis as an important first step towards a
complete delay analysis of multi-hop wireless systems.
 For a network with node exclusive interference, our lower bound is tight in
the sense that it goes to infinity whenever the delay of any throughput
optimal policy is unbounded.
 For a tandem queuing network, the average delay of a delay optimal policy
proposed numerically coincides with the lower bound provided in this paper.
 We are able to apply known techniques to obtain a sample path delay-optimal
scheduling policy.
 We also obtain policies that minimize a function of queue lengths at all
times on a sample path basis.
 Further, for a tandem queuing system, we show numerically that the
expected delay of a previously known delay-optimal policy coincides with
the lower bound.
Disadvantages:-

3.  How to find a route from some node S to another D in the network.
 Low scalability so it access limited data`s only
 In MANETs, limited resources such as transmission bandwidth, energy,
memory and processing power must be taken into consideration.
 The security and Quality of Service are not easy to solve in both networks.
Proposed System:-
 A P2P content based file sharing system, namely SPOON, for disconnected
MANETs
 The system uses an interest extraction algorithm to derive a node’s interests
from its files for content-based file searching. For efficient file searching
 That our system significantly lowers transmission cost and improves file
searching success rate compared to current methods
 social network-based P2P content-based file sharing in disconnected mobile
ad hoc Networks (SPOON) with four components
 we propose the community construction algorithm to build communities to
enable efficient file retrieval
Advantages:-
 P2P over MANET is the most popular used pattern of file sharing within
MANETs
 P2P file sharing network is very widely used in recent internet. And within
MANETs, P2P file sharing approach is also widely adopted.
 A single route discovery may yield many routes to the destination, due to
intermediate nodes replying from local caches

4. Hardware Requirements
 SYSTEM : Pentium IV 2.4 GHz
 HARD DISK : 40 GB
 RAM : 256 MB
Software Requirements
 Operating system : Windows XP Professional
 IDE : Microsoft Visual Studio .Net 2008
 Database : Sql server
 Coding Language : C#.NET