A method enables mobility in a wireless network consuming less resources
than prior art methods. The wireless network contains mobile devices,
base stations, and a network server connected to the Internet. The method
uses IP headers within the wireless networks, in place of Mobile IP
headers. A base station changes mobile device's home address to a care-of
address when the mobile device sends a packet to the network server.
Correspondingly, the base station changes the care-of address to the
mobile device's home address when the network server sends a packet to
the mobile device.