Patent ID: 7180876

Claim:
A method of selectively accessing a plurality of wireless access networks, comprising: measuring a link quality of a first one of the plurality of wireless access networks via a first interface module; selecting the first interface module for use if predetermined link quality criteria for the first one of the plurality of wireless networks are met; determining average link qualities for the plurality of wireless access networks measured over a period of time; examining the average link qualities; selecting a second interface module for communicating over a second one of the plurality of wireless access networks that has an associated average link quality that meets associated link quality criteria; scheduling communication over the first and second interface modules to access the plurality of wireless access networks; determining a target probability of interruption for using the first interface module; determining whether the first interface module is idle and setting an elapsed time to zero if the first interface module is active and measuring an elapsed time of an idle period if the first interface module is idle; and determining a first probability that a sum of the elapsed idle time, a measurement time to measure signal quality, and an interface activation time is larger than a duration of an arbitrary idle period based upon a probability distribution for the idle period.