A push proxy server for pushing data to a wireless device having a coverage state of online or offline. The push proxy server comprises a coverage state detector, memory, a data store, and a transceiver. The coverage state detector determines the coverage state of the wireless device. The memory stores...http://www.google.de/patents/US7643825?utm_source=gb-gplus-sharePatent US7643825 - System and method for managing data to be pushed to a wireless device when the device may be outside of a coverage range
