Patent ID: 8175621

Claim:
A communication apparatus accompanying with a radio transceiver module, a first subscriber identity card communicating with a first wireless network via the radio transceiver module through a first cell belonging to the first wireless network and a second subscriber identity card communicating with a second wireless network via the radio transceiver module through a second cell belonging to the second wireless network, comprising: a processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, determining a first paging parameter for the first subscriber identity card, processor logic obtaining a plurality of second paging parameters from the second cell belonging to the second wireless network for the second subscriber identity card, processor logic obtaining a plurality of corresponding paging collision numbers each according to the first paging parameter and each second paging parameter, processor logic determining one from the second paging parameters with the minimum paging collision number, processor logic determining one from the obtained second paging parameters with consideration of the determined first paging parameter, and processor logic transmitting the determined second paging parameter via the radio transceiver module to the second wireless network through the second cell belonging to the second wireless network, thereby enabling the second cell to broadcast a plurality of paging messages periodically by a time period based on the determined second paging parameter.