Journals Proceedings

Abstract

The invention of mobile devices such as laptops, hand-held computers, and cellular phones has changed the whole Internet world. The main feature of mobile devices is that they can access the Internet wirelessly by different air interfaces using different technologies while roaming. This makes mobile devices become increasingly popular. However, the traditional Internet does not support any needed features and architectural structures for mobility management. When a mobile device comes to the Internet, it will move from one sub-network to another sub-network. However, the IP address of the mobile device will keep unchanged and the IP address can not reflect the new location due to the traditional addressing scheme of the Internet. As a result, the packets from the new location will not be routed to the destination and the packets to the new location of the mobile device will be forwarded to the old location by the traditional Internet protocols.