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References | Resource provisioning techniques used | Major contribution | Pros | Cons |
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Sun and Ansari [75] | Green cloudlet-based workload offloading | Cloudlet network file system and a green energy supplement are proposed | Low end-to-end delay and saves energy | Have to minimize the operating expenditure of the cloudlet providers |
Lewis et al. [77] | Resource-intensive computation is offloaded to cloudlets | Cloudlet-based cyber foraging | Enhanced offloading capabilities and computation | Lacks in addressing the disconnected operations |
EcheverrÃa et al. [73] | Cloudlet-based cyber foraging discovering nearby resource-rich nodes | On-demand VM provisioning | Flexibility, energy consumption, maintainability | Applicable for application task execution and not suitable for other request types |
Jararweh et al. [78] | Hierarchical cloudlet model | Software-defined system for MEC (SDMEC) | Increased coverage area | Dynamicity and resource management for different requests not addressed |
Islam et al. [74] | Migrating resources among the set of cloudlets | Prioritized metaheuristic virtual machine migration (PRIMO) algorithm | Optimal solution for gathering all the resources for users | Mobility and context-aware task computation and execution time to be considered |
Tawalbeh et al. [76] | Enhanced performance of local cloudlet | A truthful incentive mechanism | Truthfulness for both clients and servers | Fixed cost for all demands |
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