Multi-card multi-standby single-pass mobile terminal and method for reducing inter-card interference of terminal.

Abstract

The invention discloses a method for reducing inter-card interference of a multi-card multi-standby single-pass mobile terminal. The method comprises S110, a certain SIM card in a second group searches for a network, resides, and registers all searched service cells of the mobile communication network which can be registered according to a registration strategy; and the second group of SIM cards are called as SIM cards II; S120, when the second SIM card is successfully registered in the service cell of any mobile communication network, the subsequent process of the second SIM card is terminated; otherwise, step S130 is entered; S130. a timer for the SIM card II is set or restarted when the SIM card II fails to try to register the serving cell in all the mobile communication networks and the rejection reasons fed back by the network side are Forbidden PLMN; and S140, when TAU or LAU change happens to any first group of SIM cards or the timer of the second SIM card is overtime, the stepS110 is returned, and the network searching process is tried again by the second SIM card. Interference of unnecessary network search of the second group of SIM cards on normal service of the first group of SIM cards can be reduced, and the battery power of the mobile terminal can be effectively saved.

Description

technical field [0001] The present application relates to a method for reducing mutual interference among multiple SIM cards of a mobile terminal. Background technique [0002] For ease of description, in this application document, a SIM (subscriber identity module, user identity module) card is used to represent a smart card used by a mobile terminal (UE, User Equipment, user equipment), in which user identification data and authentication algorithms are stored. and corresponding keys, etc., are used to identify and authenticate the mobile terminal accessing the mobile communication network. The SIM card should be understood in a broad sense, including R-UIM (Removable User Identity Module) card, UIM (User Identity Module) card, UICC (Universal Integrated Circuit Card, universal integrated circuit card) with the same function in different mobile communication networks ) built-in SIM application, USIM (UMTS subscriber identity module) application, CSIM (CDMA subscriber iden...

AI Technical Summary

Problems solved by technology

[0004] When the dual-card dual-standby single-pass mobile terminal is in an overseas travel scene, and one of the SIM cards is a non-local SIM card with overseas roaming function enabled or an overseas local SIM card (for example, called SIM card 1), the remaining SIM cards are not When the non-local SIM card with the overseas roaming function (such as SIM card 2) is activated, the SIM card 2 will continue to search the network abroad, but because the overseas roaming function is not activated, it cannot register to the mobile communication network outside the country, which makes Increased power consumption of mobile terminals

In addition, the priority of searching the network is higher than that of voice or data services, so SIM card 2 will interrupt the voice or data services of SIM card 1 when searching the network, affecting user experience

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