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With limited coverage of wireless networks and frequent roaming of mobile users, providing a seamless communication service poses a technical challenge. In the authors' previous research, they presented a supernode system architecture that employs the Delay-Tolerant Network (DTN) concept to provide seamless communications for roaming users over interconnected heterogeneous wireless networks. Mobile Ad hoc NETworks (MANETs) are considered a key component of the supernode system for services over an area not covered by other wireless networks. Within the super node system, a dominating-set routing technique is proposed to improve message delivery over MANETs and to achieve better resource utilization.
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