With the development of SDN technology, organizations showing interest to move towards it because of cost-saving and energy-consumption solutions, including academia and industries .SDWN target is to simplify network management for wireless networks to work with wired network seamlessly with security.
Further, we need to address the possible Use cases of SDWN in future wireless networks (i.e. wave-1 and wave-2 deployments), including spatial management, security and privacy, QoS control and mobility management and interference management .one more aspect is that it should be an overlay architecture with IP tunneling as a fundamental part of its architecture. Having this, wireless access providers and hosting service providers can interconnect, which can enable user seamlessly to connect from anywhere anytime.
SDWNs Deployment Challenges
Still we have many open challenges to make SDWN implementable in business, including the end-to-end architectural model,designing and implementation modules to program the virtualized wireless technologies with software defining strategies. Obviously, the SDN implementation with wired networks is relatively easy, we face a lot of issues while dealing with radio-specific problems in wireless domain, which are related to link isolation or to channel estimation. Challenges includes allocation of AP channels so that nearby APs can use different channels, loss or delay can be faced in case of multimedia data flow due to I, P and B frames issues, with SDWNs, we have to configure APs in such a way that I frames should be sent with finest channel following with P and B channels (I means full image, P and B image means predicted image and Bi-directional predicted image respectively). Energy consumption issue is also a major issue while deploying SDWNs, we have to configure APs so that they can tightly linked to power control (with other APs / switches) and can address coverage issues , can be in asleep mode in case of no traffic.Well-organized slicing issue is also critical where we have to establish multiple virtual networks from a single physical network.
Recent experiments over future Internet architecture through strand network management for the implementation of advanced 5G Network Infrastructure with the combination of software defined network implementations is in progress to accomplish the full power of SWDN.