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International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 762953, 8 pages
http://dx.doi.org/10.1155/2012/762953
Research Article

Service-Oriented Radio Architecture: A Novel M2M Network Architecture for Cognitive Radio Systems

1Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, China
2Institute of China Electronic System Engineering Corporation, Beijing 100141, China
3School of Electronic and Information Engineering, Beihang University, Beijing 100191, China

Received 20 April 2012; Revised 4 July 2012; Accepted 4 July 2012

Academic Editor: Jianhua He

Copyright © 2012 Xu Dong 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.

Abstract

In future cognitive radio networks, a number of spectrum sensors can be distributedly deployed to monitor the surrounding wireless environment, where the machine-to-machine (M2M) technology is considered to provide the interactions among sensors, cognitive engines, and other system modules. Thus, a flexible M2M network architecture is desired to develop cognitive radio networks. As a distributed system framework, service-oriented architecture (SOA) has been well studied to provide the loose coupling, reusability, and scalability, where various system function modules are encapsulated into web services to build a virtual system. In this paper, based on SOA, we propose a flexible M2M architecture, namely, the service-oriented radio architecture (SORA), to develop the cognitive radio systems. It shows that our proposed architecture provides coordinated implementation of cognitive radio systems based on different development platforms. Furthermore, an SORA-based cognitive radio testbed is implemented, where the standard web service technologies and open source software tools are used to support the characteristics of SORA.