CN101969508A - Method and device for implementing connection of wireless terminal and three SIM cards - Google Patents

Method and device for implementing connection of wireless terminal and three SIM cards Download PDF

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Publication number
CN101969508A
CN101969508A CN2010105257964A CN201010525796A CN101969508A CN 101969508 A CN101969508 A CN 101969508A CN 2010105257964 A CN2010105257964 A CN 2010105257964A CN 201010525796 A CN201010525796 A CN 201010525796A CN 101969508 A CN101969508 A CN 101969508A
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CN
China
Prior art keywords
sim card
chip
wireless terminal
sim
module
Prior art date
Application number
CN2010105257964A
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Chinese (zh)
Inventor
薛原
Original Assignee
北京大友迅捷科技有限公司
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Application filed by 北京大友迅捷科技有限公司 filed Critical 北京大友迅捷科技有限公司
Priority to CN2010105257964A priority Critical patent/CN101969508A/en
Publication of CN101969508A publication Critical patent/CN101969508A/en

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Abstract

The invention discloses a method for implementing connection of a wireless terminal and three SIM cards. A single chip is arranged between the wireless terminal and the three SIM cards and comprises a group of input channels, three groups of output channels and a serial peripheral interface, wherein the input channels are connected with an SIM signal interface of a baseband chip of the wireless terminal; each group of output channels are connected with an SIM card; an operating command of the baseband chip is transmitted to the single chip through the serial peripheral interface; and the single chip switches the switching states of the input channels and the output channels. Because the single chip switches the switching states of the input channels and the output channels, the connection of the wireless terminal and the three SIM cards is implemented through the single chip. The invention also provides a device using the method.

Description

Realize that wireless terminal connects the method and apparatus of three SIM card

Technical field

The invention belongs to the technical field of wireless terminal, relate to the implementation method that on wireless handheld terminal, connects multichannel Subscriber Identity Module (SIM card, English is Subscriber Identity Module) simultaneously particularly, and the single-chip that utilizes this method.

Background technology

Subscriber Identity Module (being commonly referred to SIM card) is used for the authentication to user identity and Service Privileges on wireless terminal, wireless terminal is by setting up alternately and being connected and finishing communication function of map network with Subscriber Identity Module.

A baseband chip can only connect a Subscriber Identity Module on the traditional scheme, generally can only use a telephone number.Afterwards along with the demand in technical development and market, the scheme that a baseband chip connects two even more users identification card has appearred.

The prior art scheme mainly contains following several:

(1) the built-in multi-user's identification card of baseband chip handover module

Some baseband chip is built-in multi-user's identification card handover module.The shortcoming of this scheme is a very flexible, must use specific baseband chip, and autgmentability is poor, and advantage is the integrated level height, and it is convenient to manufacture.

(2) increase special-purpose Subscriber Identity Module handover module

There is a large amount of baseband chips not have built-in Subscriber Identity Module handover module, and equally also there is the demand that connects plurality of SIM cards in the system that uses these baseband chips, in such system, need to increase special chip for this reason and connect plurality of SIM cards, so special chip all can only be supported the two-way SIM card at present, in the face of three tunnel SIM card demands that occur on the present market can only be by realizing three road SIM with a scheme 1 described specific baseband chip cascade, and it is just powerless to face four tunnel SIM card demands that occur, can only increase a control chip again expands, cause that like this circuit complexity rises, number of devices rises, board area rises, a series of problems such as cost rising.

Summary of the invention

Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, the method that is used for three SIM card of wireless terminal connection that a kind of cost is low and performance is good is provided.

Technical solution of the present invention is: the method that realizes three SIM card of wireless terminal connection is provided with a single-chip between wireless terminal and three SIM card, this single-chip comprises one group of input channel, three groups of output channels and a Serial Peripheral Interface (SPI) (SPI, Serial Peripheral Bus), input channel links to each other with the SIM signaling interface of the baseband chip of wireless terminal, every group of output channel links to each other with a SIM card, by Serial Peripheral Interface (SPI) the operational order of baseband chip is passed to single-chip, single-chip switches the on off state of input channel and the on off state of output channel then.

Also provide and realized that wireless terminal connects the device of three SIM card, this device is a single-chip, it comprises a SPI module, a control module, a SIM interface module, three low pressure difference linear voltage regulator (LDO, Low DropOut linear regulator) internal bus of module and switched input signal and output signal, from the operation command signal of baseband chip through the SPI module, control module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the input signal of baseband chip through the SIM interface module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the output signal of three SIM card through three low pressure difference linear voltage regulator LDO modules, internal bus is to control module or through three low pressure difference linear voltage regulator LDO modules, internal bus, the SIM interface module feeds back to baseband chip.

Because single-chip switches the on off state of input channel and the on off state of output channel, so realized being connected of wireless terminal and three SIM card by this single-chip.

Description of drawings

Fig. 1 is the structural representation according to device of the present invention;

Fig. 2 is single-chip according to the present invention and baseband chip, three circuit diagrams that SIM card links to each other.

Embodiment

Below by accompanying drawing, technical scheme of the present invention is described in further detail.

The method that connects three SIM card according to realization wireless terminal of the present invention is provided with a single-chip between wireless terminal and three SIM card, this single-chip comprises one group of input channel, three groups of output channels and a Serial Peripheral Interface (SPI), input channel links to each other with the SIM signaling interface of the baseband chip of wireless terminal, every group of output channel links to each other with a SIM card, by Serial Peripheral Interface (SPI) the operational order of baseband chip is passed to single-chip, single-chip switches the on off state of input channel and the on off state of output channel then.

Preferably, every group of output channel is provided with a level adapted part, and it links to each other with the VISM pin of a SIM card.So that single-chip carries out level adapted respectively independently to three SIM card.

Preferably, the reseting pin of described single-chip is used for the SIM signal, so that single-chip is realized resetting.

Preferably, the highest order of the register address of described single-chip is used to indicate three card mode of extensions, and all register definitions keep compatible with original function under two mode cards, and the register functions definition is adjusted into three card control patterns under three card mode of extensions.Behind the configuration peripheral circuit, just can realize that compatible wireless terminal only connects two SIM card like this.

Fig. 1 is the structural representation according to device of the present invention.Fig. 2 is single-chip according to the present invention and baseband chip, three circuit diagrams that SIM card links to each other.This device is a single-chip, it comprises a SPI module, a control module, a SIM interface module, the internal bus of three low pressure difference linear voltage regulator LDO modules and switched input signal and output signal, from the operation command signal of baseband chip through the SPI module, control module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the input signal of baseband chip through the SIM interface module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the output signal of three SIM card through three low pressure difference linear voltage regulator LDO modules, internal bus is to control module or through three low pressure difference linear voltage regulator LDO modules, internal bus, the SIM interface module feeds back to baseband chip.

Further, internal bus comprises the open/close handover module of control input signals and output signal.

Further, each LDO links to each other with one VSIM pin in three SIM card, so that control the level adapted of this SIM card.

Further,, make full use of the pin resource, make described single-chip have only 21 pins, as shown in Figure 2 in order to reduce single-chip cost and package dimension.

In addition, also be single-chip configuration peripheral circuit, it is used for compatible wireless terminal and only connects two SIM card.

The present invention compared with prior art has following advantage:

(1) the present invention has defined a kind of chip pin layout of optimization, expand to three road SIM signal controlling under the situation of area that does not increase traditional two-way SIM control chip substantially and packaging cost, the enhancing by software simultaneously cooperates the assurance chip correctly to finish complete function.

(2) contrast of the present invention and prior art scheme is as shown in the table

To realize that 4 road SIM are controlled to be example

As seen from the above table, the present invention realizes high-performance with minimum cost.

(3) method for designing of the present invention makes the complexity of system reduce, and interface structure is simple.

The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs to the protection range of technical solution of the present invention to any simple modification, equivalent variations and modification that above embodiment did.

Claims (9)

1. realize that wireless terminal connects the method for three SIM card, it is characterized in that: between wireless terminal and three SIM card, be provided with a single-chip, this single-chip comprises one group of input channel, three groups of output channels and a serial peripheral equipment interface SPI, input channel links to each other with the SIM signaling interface of the baseband chip of wireless terminal, every group of output channel links to each other with a SIM card, by Serial Peripheral Interface (SPI) the operational order of baseband chip is passed to single-chip, single-chip switches the on off state of input channel and the on off state of output channel then.
2. realization wireless terminal according to claim 1 connects the method for three SIM card, and it is characterized in that: every group of output channel is provided with a level adapted part, and it links to each other with the VISM pin of a SIM card.
3. realization wireless terminal according to claim 2 connects the method for three SIM card, it is characterized in that: the reseting pin of described single-chip is used for the SIM signal, so that single-chip is realized resetting.
4. realization wireless terminal according to claim 3 connects the method for three SIM card, it is characterized in that: the highest order of the register address of described single-chip is used to indicate three card mode of extensions, all register definitions keep compatible with original function under two mode cards, and the register functions definition is adjusted into three card control patterns under three card mode of extensions.
5. realize that wireless terminal connects the device of three SIM card, it is characterized in that: this device is a single-chip, it comprises a SPI module, a control module, a SIM interface module, the internal bus of three low pressure difference linear voltage regulator LDO modules and switched input signal and output signal, from the operation command signal of baseband chip through the SPI module, control module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the input signal of baseband chip through the SIM interface module, export to three SIM card respectively after internal bus to the three low pressure difference linear voltage regulator LDO module, from the output signal of three SIM card through three low pressure difference linear voltage regulator LDO modules, internal bus is to control module or through three low pressure difference linear voltage regulator LDO modules, internal bus, the SIM interface module feeds back to baseband chip.
6. realization wireless terminal according to claim 5 connects the device of three SIM card, and it is characterized in that: internal bus comprises the open/close handover module of control input signals and output signal.
7. realization wireless terminal according to claim 6 connects the device of three SIM card, it is characterized in that: each LDO module links to each other with one VSIM pin in three SIM card, so that control the level adapted of this SIM card.
8. realization wireless terminal according to claim 7 connects the device of three SIM card, and it is characterized in that: described single-chip has 21 pins.
9. realization wireless terminal according to claim 8 connects the device of three SIM card, it is characterized in that: also be single-chip configuration peripheral circuit, it is used for compatible wireless terminal and only connects two SIM card.
CN2010105257964A 2010-10-21 2010-10-21 Method and device for implementing connection of wireless terminal and three SIM cards CN101969508A (en)

Priority Applications (1)

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CN2010105257964A CN101969508A (en) 2010-10-21 2010-10-21 Method and device for implementing connection of wireless terminal and three SIM cards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105257964A CN101969508A (en) 2010-10-21 2010-10-21 Method and device for implementing connection of wireless terminal and three SIM cards

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158599A (en) * 2011-03-15 2011-08-17 上海艾为电子技术有限公司 Wireless terminal and multi-SIM (subscriber identity module) card connecting device thereof
CN105191256A (en) * 2013-02-05 2015-12-23 认识漫游有限公司 Method and device for authenticating a mobile station on an alternative communications network

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101478840A (en) * 2009-01-16 2009-07-08 上海闻泰电子科技有限公司 SIM card control circuit for single-chip dual-mode mobile terminal and control method thereof
CN101521957A (en) * 2008-02-27 2009-09-02 联发科技股份有限公司 System for initiating subscriber identity cards and method for initiating operating voltages for subscriber identity cards
CN101572963A (en) * 2008-04-30 2009-11-04 中国移动通信集团公司 Baseband communication functional device and communication method thereof
CN201365349Y (en) * 2009-03-06 2009-12-16 深圳市凯迪亚通信科技有限公司 Dual-mode two-way three-clamp three-standby multifunctional mobile phone with analog television

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101521957A (en) * 2008-02-27 2009-09-02 联发科技股份有限公司 System for initiating subscriber identity cards and method for initiating operating voltages for subscriber identity cards
CN101572963A (en) * 2008-04-30 2009-11-04 中国移动通信集团公司 Baseband communication functional device and communication method thereof
CN101478840A (en) * 2009-01-16 2009-07-08 上海闻泰电子科技有限公司 SIM card control circuit for single-chip dual-mode mobile terminal and control method thereof
CN201365349Y (en) * 2009-03-06 2009-12-16 深圳市凯迪亚通信科技有限公司 Dual-mode two-way three-clamp three-standby multifunctional mobile phone with analog television

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158599A (en) * 2011-03-15 2011-08-17 上海艾为电子技术有限公司 Wireless terminal and multi-SIM (subscriber identity module) card connecting device thereof
CN102158599B (en) * 2011-03-15 2013-09-04 上海艾为电子技术有限公司 Wireless terminal and multi-SIM (subscriber identity module) card connecting device thereof
CN105191256A (en) * 2013-02-05 2015-12-23 认识漫游有限公司 Method and device for authenticating a mobile station on an alternative communications network

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