SDN-Driven Internet of Health Things: A Novel Adaptive Switching Technique for Hospital Healthcare Monitoring System

Table 1

State of Arts Comparison.

Pub. year [ref. no.]	Protocols/methods	Metrics	Highlight
2019 [10]	SDN routing based	(i) Throughput; (ii) End-to-end delay; (iii) Energy consumption; (iv) Successful transmission	(i) Proposed an energy-aware and controller-based routing algorithm (SDN routing) with a new interface protocol (WBAN flow); (ii) Proposed a new architecture consisting of data, control, and application planes for the SDN-based; WBAN environment
2018 [11]	Software-defined WBAN (SDWBAN)	—	(i) Proposed new framework based on lack of current WBAN architectures and challenges such as heterogeneous WBAN traffic handling, static architecture, mobility management, traffic priority management, secured authentication, network reconfiguration, energy efficiency
2017 [12]	Software-defined network-service function chain (SDN-SFC)	(i) Total distance; (ii) Overload; (iii) Time cost	(i) Proposes combined software-defined network-service function chain (SDN-SFC) with heuristic SA algorithm to reduce IoT health-based data transmission time; (ii) Considering load-balancing for remote healthcare system
2015 [13]	SDN-cloud computing (CC) based	—	(i) Generalized software-defined cloud-based architecture for virtual hospital has been proposed; (ii) Future possible open research issues and challenges have been discussed to provide an interesting and enormous research effort for near future
2015 [14]	Centralized controller using SDN	Response time	(i) Proposed a design of the elastic health IoT structure, which deals with both intelligent health monitoring and emotional care; (ii) A health IoT framework with software defined is proposed which separates the application from the underlying physical infrastructure; (iii) Proposed framework enables elastic control and management of the physical infrastructure and speeds up the innovation of various healthcare applications