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Wireless Communications and Mobile Computing
Volume 2017 (2017), Article ID 4195908, 14 pages
Research Article

CARCC: Connectivity Autorecovering via Cooperative Communication

1Instituto Federal de Goiás, Campus Luziânia, Luziânia, GO, Brazil
2Department of Computer Science, University of Brasília (UnB), Brasília, DF, Brazil

Correspondence should be addressed to Ulisses Rodrigues Afonseca

Received 4 July 2016; Revised 6 October 2016; Accepted 23 October 2016; Published 15 January 2017

Academic Editor: Gianluigi Ferrari

Copyright © 2017 Ulisses Rodrigues Afonseca et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Wireless ad hoc networks are often considered an alternative for providing communication means to support urgent and temporary tasks. In such settings, network connectivity is a primary condition to allow nodes to exchange information. In this work we explore the use of cooperative communication (CC) techniques for improving network connectivity. The proposed solution, named Connectivity Autorecovering with Cooperative Communication (CARCC), monitors potential network disruption points and proactively creates cooperative links (CC-links). These links are used to regain network connectivity when necessary. CARCC allows the selection of suitable CC-links in time, whereas a centralized approach takes time, where is the degree of the underline network graph and is the computational cost of selecting helper nodes. Although CARCC relies on localized information, it is able to provide comparable results of other noteworthy alternatives that require global topological information. The CC-links provided by CARCC reestablished network connectivity in over 91% in the evaluated settings.