A user-operated communication device stores security association information that is initially used to wirelessly connect the user-operated communication device to a first wireless access point made available by a first private wireless network service provider. Assume that the user-operated communication device roams out of a first wireless coverage region supported by the first wireless access point into wireless range of a second wireless access point operated by a second private wireless network service provider. Instead of performing full authentication to establish a wireless communication link with the second wireless access point, the user-operated communication device requests authentication resumption and utilizes the stored security association information (provided by the first service provider) to more quickly, wirelessly connect the communication device to the second wireless access point. Accordingly, techniques herein support authentication resumption across different service providers' wireless networks.