Patent ID: 7746774

Claim:
A network component, comprising: a processor; memory; computer instructions stored in the memory; the computer instructions being executable by the processor for use in controlling network resources for data sessions in a wireless network for a mobile station operating for communications using a Point-to-Point Protocol (PPP) session which is associated with a data inactivity timer for terminating the PPP session, by: dynamically assigning, from a pool of IP addresses, a Care Of Address (COA) for a mobile station in the wireless network, the mobile station having a home IP address associated with a home network; calculating a ratio of the number of IP addresses dynamically assigned to mobile stations in the wireless network and the total number of IP addresses in the pool; setting a Mobile IP (MIP) Registration Lifetime for the mobile station to an initial value that is less than the data inactivity timer of the PPP session and depends on the ratio of IP addresses such that, as the ratio increases, the initial value decreases; causing the COA and the MIP Registration Lifetime to be sent to the mobile station, which is adapted to register the COA with a home agent in the home network for IP mobility service, so that data packets of the PPP session which are addressed to the home IP address are tunneled to the COA of the mobile station in the wireless network; and communicating a Link Control Protocol (LCP) Termination Request which terminates the IP mobility service if no re-registration request is received from the mobile station upon expiration of the MIP Registration Lifetime.