SCALABLE DEVICE MOBILITY

Abstract

The continuously increasing Internet coverage and its availability gave rise to an issue that once has been considered not important to take into consideration. Today a number of applications use the Internet to deliver time critical messages. The usage of wireless Access Points takes considerable percentage to connect mobile devices to the Internet provider. However, these relatively cheaper Internet Access Points have their own disadvantages as compare to the GSM and ADSL. The access points cover a very limited area and thus in order to cover wide area multiple access points needs to be installed. In other words, as the user moves he is supposed to switch between access points. Nevertheless, the basic problems in such cases are packet loss during handover. In today’s technological advancements these issues, though very small, are no more insignificant but needs to be handled properly. So protocols such as MobileIP , LISP, HOST have been proposed. Furthermore, in this thesis a mechanism to reduce such packet losses have been studied and proposed in relation to the SensibleThings Internet-of-things platform. A work around solution known as Mobile DCXP has been proposed and implemented and comparison with the existing system have been carried out. In addition, a generic solution has been discussed in detail and compared with the Mobile DCXP. However, the implementation of the generic solution has been deferred to the future. Finally, the idea of Mobile DCXP has been illustrated with proof-ofconcept apps and implementation of a simple Android Application known as IChat has been done. The IChat is a simple app that helps to find out the packet losses during handover and carry out comparison.