Software-Defined Networking Meets Software-Defined Radio

 Software-Defined Networking Meets Software-Defined Radio in Mobile AdHoc Networks 

Software-defined radio and Software-Defined networking are of separate domains, and both are not unified. There are many challenges in interfacing both SDN-SDR and it provides a lot of benefits especially Mobile AdHoc networks. 

MANETs are the forefront technology, and they help in establishing communication between various wireless nodes. They expose the full potential and benefits of coexistence and interaction of SDN and SDR. 

Current SDN do not span the physical (PHY) and medium-access control (MAC) layers, but they concentrate on network-level routing and traffic flow optimization.  As a result, PHY and MAC layer related parameters affect the performance metrics. We need to bridge the gap between the centralized network in SDN with the distributed network MANETs for the add-on flexibility.

Use cases:

     Cross-layer design extends to the network, transport, and application layers provides the adaptability between the layers. And the required QoS can be achieved.

    Software defined Radio is a technology that provides a flexible adaptation between PHYSICAL and MAC layers. Its aim is to eradicate the traditional hardware transceivers with appropriate software. It means a programmable hardware controlled by a software.

Commercially many SDR products are available.

SDN-has been an approach such that the network routing is performed by a centralized SDN controller.  If the network is large, then distributed approach can be utilized to address the scalability issues. The data plane and control plane are separated.

architecture of sdn-sdr:

References:

[1] F. Foukalas, V. Gazis and N. Alonistioti, "Cross-layer design proposals for wireless mobile networks: A survey and taxonomy," in IEEE Communications Surveys & Tutorials, vol. 10, no. 1, pp. 70- 85, First Quarter 2008. 

 [2] H. Kim and N. Feamster, "Improving network management with software defined networking," in IEEE Communications Magazine, vol. 51, no. 2, pp. 114-119, February 2013.

 [3] B. A. A. Nunes, M. Mendonca, X. N. Nguyen, K. Obraczka and T. Turletti, "A Survey of Software-Defined Networking: Past, Present, and Future of Programmable Networks," in IEEE Communications Surveys & Tutorials, vol. 16, no. 3, pp. 1617-1634, Third Quarter 2014. 

 [4] F. Hu, Q. Hao and K. Bao, "A Survey on Software-Defined Network and OpenFlow: From Concept to Implementation," inIEEE Communications Surveys & Tutorials, vol. 16, no. 4, pp. 2181-2206, Fourthquarter 2014.