Abstract
Mobile applications and tasks are huge and handle huge data. These applications are offloaded and executed in the cloud. Instead of executing in the cloud, the cloudlet which is a small cloud situated near the access point is used for execution. The cloudlet has less number of VMs. When more tasks are offloaded to the cloudlet, there is no VM free as VMs are busy in executing tasks. This cloudlet is full of tasks and all VMs are busy. But nearby another cloudlet may have free VMs. Those cloudlets have free VMs. So the tasks that do not get the VM in the near cloudlet, are offloaded to nearby cloudlets. So all the cloudlets now have tasks for execution and resources are utilized optimally. This survey discusses the various load balancing methods proposed by different researchers and their issues.
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