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Multi-mode mobile terminal

A mobile terminal and mode technology, applied in the field of communication, can solve problems such as communication damage

Active Publication Date: 2015-01-14
CHINA MOBILE GRP GUANGDONG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a multi-mode mobile terminal, which is used to solve the defect that the current communication may be destroyed when the multi-mode mobile terminal switches between different modes in the prior art

Method used

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0030] Single card with multiple baseband chips, multiple baseband chips share access to one SIM card, and a mechanism for sharing SIM cards needs to be designed. Generally, there are two modes: transit mode and transparent transmission mode.

[0031] Transit mode: When the master baseband chip (TD-LTE BB, TDL for short) and the slave baseband chip (TD-SCDMA BB, TDS for short) both need to access the SIM card, the slave baseband chip accesses the SIM card through the USIM Slaver interface provided by the master baseband chip .

[0032] Transparent transmission mode: When multiple baseband chips do not need to access the SIM card concurrently, if a slave baseband chip accesses the SIM card, the master baseband chip will directly connect the slave baseban...

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Abstract

The invention provides a multi-mode mobile terminal. The multi-mode mobile terminal comprises a master base band chip, a slave base band chip and a multiplexing unit. The master base band chip comprises a control module. The control module is used for sending a first control signal for switching into a transparent transmission mode from a transition mode to the multiplexing unit in the transition module, sending a second control signal for switching into the transparent transmission monitoring mode from the transparent transmission mode to the multiplexing unit in the transparent transmission mode and sending a third control signal for switching into the transition mode from the transparent transmission monitoring mode to the multiplexing unit in the transparent transmission monitoring mode. The multiplexing unit is used for controlling direct communication between the slave base band chip and an SIM card according to the first control signal, controlling the master base band chip to conduct monitoring on communication between the slave base band chip and the SIM card according to the second control signal and controlling the main base band chip and the slave base band chip to have access to the SIM card in a concurrent mode according to the third control signal. After communication ends, switching is conducted, and the defect that normal communication between the slave base band chip and the SIM card is interrupted forcedly is overcome.

Description

technical field [0001] The present invention relates to communication technology, in particular to a multi-mode mobile terminal. Background technique [0002] In order to improve the utilization rate and user experience of mobile communication networks, terminals with simultaneous standby capabilities of multiple communication standards have gradually appeared. This type of terminal can perform cell search, camp and standby in networks of multiple conduct business in a network. There are three ways to realize it: single card and single baseband chip, the terminal integrates multiple communication standards by a single baseband chip, and the single baseband chip coordinates the access of multiple communication systems to the SIM card; single card multi-baseband chip, with multiple baseband chips To form a terminal, multiple baseband chips share access to one SIM card; multi-card multi-baseband chips, a terminal composed of multiple baseband chips, each baseband chip independ...

Claims

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Application Information

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IPC IPC(8): H04W88/06
CPCH04W88/06
Inventor 孙炼蔡希潘毅罗伟民陈其铭王艳龙别卫春
Owner CHINA MOBILE GRP GUANGDONG CO LTD
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