Patent ID: 8270970
Filing Date: 2012-09-18
Classification: H04W

Abstract:
1. A network listening method of a mobile phone comprising a code division multiple access (CDMA) chip, a first user identity module (UIM) card, and a second UIM card, the network listening method comprising: searching a communication network based on a CDMA network protocol using the first UIM card when the first UIM card is wakened up; recording network listening parameters of the first UIM card in the CDMA chip, the network listening parameters of the first UIM card comprising a listening frequency of the first UIM card, a listening channel of the first UIM card, and a listening time of the first UIM card; determining whether a communication frequency of the communication network equals the listening frequency of the first UIM card; switching the communication frequency to a listening frequency of the second UIM card upon a condition that the communication frequency does not equal the listening frequency of the first UIM card, or determining whether a communication channel of the communication network matches the listening channel of the first UIM card upon a condition that the communication frequency equals a listening frequency of the first UIM card; responding to the communication network using the first UIM card upon a condition that the communication channel matches the listening channel of the first UIM card; searching a communication network based on the CDMA network protocol using the second UIM card when the second UIM card is wakened up and recording network listening parameters of the second UIM card in the CDMA chip, upon a condition that the communication channel does not match the listening channel of the first UIM card; and switching the communication channel to a listening channel of the second UIM card, and responding to the communication network according to the network listening parameters of the second UIM card; wherein the listening frequency and the listening channel of the first UIM card are switched to the listening frequency and the listening channel of the second UIM card in two periods of the listening time of the first UIM card, upon a condition that the listening time of the first UIM card does not equal the listening time of the second UIM card.