“…Furthermore, SDN is able to easily mark and locate traffic paths as the traffic forwarding and management decisions are carried by the logically decoupled control layer [17] [73]. To reliably transfer information and data generated by different entities at run time and deliver QoS-aware services in a smart city such as emergency response traffic [188], Web of Things (WoT) [189], video surveillance [190], the communication systems must provide centralized management of network resources where QoS-aware routing mechanisms and astute scheduling could be attained [71]. This is quietly challenging to achieve via traditional networking infrastructures where centralized control is not upheld [184].…”