Zachos Boufidis
Abstract
The advent of software-defined radio products and recent advances in cognitive radio research will facilitate the preservation or even improvement of user perception in volatile radio conditions while optimizing the use of network resources. Based on cognition techniques, the autonomic communication paradigm attempts to pave the way towards self-governed systems that will alleviate the shortcomings of present remotely managed user devices. This article identifies the challenges for such cognitive reconfigurable systems and introduces CORPS, a new end-to-end architecture that unifies software and cognitive radio themes enriched by self-ware capabilities. The manuscript discusses the adopted network-agnostic protocol-independent modeling approach, which is in line with best common practices in the industry, and presents the system architecture in terms of functional specification and UML modeling. Next, the CORPS functional architecture is mapped to the evolved-UMTS system under development in 3GPP. Finally, the paper proposes and evaluates CREST, a novel signaling protocol for improving the quality of service of existing bearers in a post-3G network through radio-access-technology switching and coordinated dynamic spectrum access.
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Index Terms
- Architecture and signaling protocol for migration to cognitive reconfigurable post-3G mobile systems
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