TITLE:
On Exploiting Temporal, Social, and Geographical Relationships for Data Forwarding in Delay Tolerant Networks
AUTHORS:
Zhijie Li, Ming Li, Longxiang Gao
KEYWORDS:
Delay Tolerant Networks; Temporal-Social Relationship; Temporal-Geographical Relationship
JOURNAL NAME:
Journal of Software Engineering and Applications,
Vol.7 No.2,
February
11,
2014
ABSTRACT: Because of unpredictable node mobility and absence of global information
in Delay Tolerant Networks (DTNs), effective data forwarding has become a
significant challenge in such network. Currently, most of existing data
forwarding mechanisms select nodes with high cumulative contact capability as
forwarders. However, for the heterogeneity of the transient
node contact patterns, these selection approaches may not be the best relay
choices within a short time period. This paper proposes an appropriate data
forwarding mechanism, which combines time, location, and social characteristics
into one coordinate system, to improve the performance of data forwarding in
DTNs. The Temporal-Social Relationship and the Temporal-Geographical
Relationship reveal the implied connection information among these three
factors. This mechanism is formulated and verified in the experimental studies
of realistic DTN traces. The empirical results show that our proposed mechanism
can achieve better performance compared to the existing schemes with similar forwarding
costs (e.g. end-to-end delay and delivery success ratio).