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

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.

A Dual-Cycle Architecture in Cognitive M2M Wireless Networks

“…The functions of these standards will not be introduced for simplicity, which have already been specified in [9].…”

“…Framework. The framework of our proposed SORA has been expounded in [9], where three terms are considered, namely, radio infrastructures, services, and applications. Specifically, radio infrastructures provide the basic function of radios (e.g., encoder, modulator-demodulator (MODEM), RF module, antenna, etc.…”

“…The implementation of SORA is based on a series of web service standards, including the web service description language (WSDL) for service description, the simple object access protocol (SOAP) for service interaction, and the universal description, discovery, and integration (UDDI) for service registration, publishing, discovery, and integration, respectively. The functions of these standards will not be introduced for simplicity, which have already been specified in [9].…”

“…Fortunately, the machine-to-machine (M2 M) technology provides us with an efficient method to solve these problems. In [9], using the idea of service-oriented architecture (SOA) [10], a novel M2 M architecture named service-oriented radio architecture (SORA) has been developed to design and construct cognitive radio systems. In this respect, Virginia Tech has also built a cognitive radio open-source system (CROSS) to integrate cognitive engines based on different intelligent algorithms [11].…”