Open this publication in new window or tab >>2018 (English)In: ACM Transactions on Modeling and Performance Evaluation of Computing Systems (TOMPECS), ISSN 2376-3639, Vol. 3, no 4, p. 16:1-16:23, article id 16Article in journal (Refereed) Published
Abstract [en]
The emerging device-to-device communication solutions and the abundance of mobile applications and services make opportunistic networking not only a feasible solution but also an important component of future wireless networks. Specifically, the distribution of locally relevant content could be based on the community of mobile users visiting an area, if long-term content survival can be ensured this way. In this article, we establish the conditions of content survival in such opportunistic networks, considering the user mobility patterns, as well as the time users keep forwarding the content, as the controllable system parameter.
We model the content spreading with an epidemic process, and derive a stochastic differential equations based approximation. By means of stability analysis, we determine the necessary user contribution to ensure content survival. We show that the required contribution from the users depends significantly on the size of the population, that users need to redistribute content only in a short period within their stay, and that they can decrease their contribution significantly in crowded areas. Hence, with the appropriate control of the system parameters, opportunistic content sharing can be both reliable and sustainable.
Place, publisher, year, edition, pages
ACM Digital Library, 2018
Keywords
Opportunistic networks, content sharing, mobility, stochastic epidemic modeling, stochastic differential equations, Markov processes, network performance modeling, network performance analysis, mobile ad hoc networks
National Category
Telecommunications
Research subject
Telecommunication
Identifiers
urn:nbn:se:kth:diva-236081 (URN)10.1145/3232161 (DOI)000456551400002 ()2-s2.0-85074676469 (Scopus ID)
Note
QC 20181016
2018-10-152018-10-152022-06-26Bibliographically approved