Elijah   Cloudlet-based Mobile Computing

• only soft state:   It is does not have any hard state, but may contain cached state from the cloud.  It may also buffer data originating from a mobile device (such as video or photographs) en route to safety in the cloud.  The avoidance of hard state means that each cloudlet adds close to zero management burden after installation:  it is entirely self-managing.   
  
• powerful, well-connected and safe:  It possesses sufficient compute power (i.e., CPU, RAM, etc.) to offload resource-intensive computations from one or more mobile devices.  It has excellent connectivity to the cloud (typically a wired Internet connection) and is not limited by finite battery life (i.e., it is plugged into a power outlet).    Its integrity as a computing platform is assumed; in a production-quality implementation this will have to be enforced through some combination of tamper-resistance, surveillance, and run-time attestation.
  
• close at hand:  It is logically proximate to the associated mobile devices. "Logical proximity" is defined as  low end-to-end latency and high bandwidth (e.g., one-hop Wi-Fi).   Often, logical proximity implies physical proximity.  However, because of "last mile" effects, the inverse may not be true: physical proximity may not imply logical proximity.
  
• builds on standard cloud technology: It encapsulates offload code from mobile devices in  virtual machines (VMs), and thus resembles classic cloud infrastructure such as Amazon EC2 and OpenStack.  In addition, each cloudlet has functionality that is specific to its cloudlet role.
  

 Contact: Professor Mahadev Satyanarayanan