Patent ID: 7206849
Filing Date: 2007-04-17
Classification: G06F

Abstract:
1. A method for preventing a mobile computer from being disconnected from a network comprising: determining a termination time of a network connection for said mobile computer; setting a timer for a time prior to said termination time responsive to said determination of said termination time; setting said mobile computer into a sleep mode responsive to setting of said timer; setting said mobile computer to an active mode responsive to said timer expiring; transmitting a message from said mobile computer to a host computer in said network responsive to said mobile computer being set to said active mode wherein said message is a request for an extension of a lease of an Internet Protocol Address for said mobile computer; determining whether said mobile computer is out of transmission range of said host computer; displaying an out of range message on a display screen of said mobile computer responsive to a determination that said mobile computer is out of said transmission range; setting a re-transmit timer responsive to a determination of said mobile computer being out of said transmission range; and re-transmitting said message responsive to an expiration of said re-transmit timer.