Emerging Issues in Wireless Computational Grids for Mobile Devices

An important factor influencing task execution time is the mobility of the devices. Higher mobility is a critical factor affecting the grid performance. In other words, if the devices in the grid are highly mobile, this adversely impacts the time taken to perform a computationally-intensive task. A related issue is that of subordinates and/or the initiator leaving the cell while partial tasks are still in progress. Currently, if the subordinates involved in working on partial tasks leave the grid, the Brokering service re-allocates the partial tasks to other subordinates in the grid. If this approach is modified to allow the subordinates to carry their partial tasks with them when they leave the grid and migrate to a new service area, then handoff issues become nontrivial. When the initiator of a task moves to a new area, the brokering service in our architecture is