A major goal toward the 4G Wireless evolution is the providing of persistent computing circumstances which can seamlessly and ubiquitously support users in attaining their tasks, in accessing information or communicating with other users at anytime, anywhere, and from any device. In such a ambiance, computers get pushed further into background; computing power and network connectivity are embedded in virtually every device to bring computation to users, irrespective of where they are, or even under what situations they work.