Patent ID: 8908579
Filing Date: 2014-12-09
Classification: H04W,Y02D

Abstract:
1. A system, comprising: a wireless radio interface; a first subscriber identity module (SIM) card interface configured to accept a first SIM card; a second SIM card interface configured to accept a second SIM card; a processor in communication with the wireless radio interface and SIM card interfaces; and a memory device in communication with the processor, the memory device comprising instructions executable by the processor to: establish a packet switched network connection for the first SIM card through the wireless radio interface; suspend the packet switched network connection; establish a circuit switched network connection for the second SIM card through the wireless radio interface; resume the packet switched network connection; and retransmit a previously sent network packet acknowledgement for the packet switched network connection without waiting for a packet to be received after the packet switched network connection is resumed.