Patent ID: 9185547
Filing Date: 2015-11-10
Classification: H04W

Abstract:
1. A system for receiving a call, the system comprising: a wireless terminal having a single Radio Frequency (RF) device and at least a first Subscriber Identity Module (SIM) card and a second Subscriber Identity Module (SIM) card; and a Base Station (BS) related to the first SIM card for informing the wireless terminal of an incoming call request for the second SIM card in response to a paging request for the second SIM card that is received from a BS related to the second SIM card, while the wireless terminal is performing a call through the first SIM card, wherein; if both of the calls end, the wireless terminal transmits, to the BS related to the second SIM card, an incoming call forwarding registration release request message for requesting a release of an incoming call forwarding registration.