- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
Software-defined networking (SDN) decouples data and control plane, i.e., forwarding elements are remotely configured by centralized controllers instead through distributed control protocols. Wireless sensor networks (WSNs) have mostly been controlled in a distributed way, but its configuration challenges are complex and can be theoretically better solved with network-wide knowledge – the solution just needs to be configured on the distributed sensor nodes. This calls for SDN in WSNs and so that software-defined WSNs (SD-WSNs) have been proposed. In this survey, we explain basics of WSN and SDN, describe fundamentals of SD-WSNs and how SDN can improve the operation of WSN. Furthermore, we outline the open challenges that need to be investigated in more detail and discuss lessons learned during the preparation this survey.
This survey gave a brief overview of WSNs and SDN and introduced the concept of software-defined WSNs (SD-WSNs) including their operations, e.g., topology discovery and routing decisions, that are different from WSNs. Coordination of distributed nodes and energy efficiency are the most important challenges in WSNs. In non-SDN based WNSs, they are mostly solved in a distributed manner. SD-WSNs favor central control. That may save energy because redundant communication can be avoided, energy-constraint nodes can be offloaded from energy-efficient task by moving them to the controller, and application-specific goals may be achieved with fewer active nodes through more intelligent operation. We reviewed advances for WSNs through SDN and challenges for SD-WSNs that should be solved in the future. Finally, we pointed out lessons learned during the preparation of this survey.