CN201904834U - Mobile terminal for four SIM cards - Google Patents
Mobile terminal for four SIM cards Download PDFInfo
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- CN201904834U CN201904834U CN2010206618753U CN201020661875U CN201904834U CN 201904834 U CN201904834 U CN 201904834U CN 2010206618753 U CN2010206618753 U CN 2010206618753U CN 201020661875 U CN201020661875 U CN 201020661875U CN 201904834 U CN201904834 U CN 201904834U
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Abstract
The utility model aims to discloses a mobile terminal for four SIM (Subscriber Identity Module) cards, which comprises a baseband processor, wherein a first SIM card controller and a second SIM card controller are arranged on the baseband processor respectively, the first SIM card controller is connected with a first SIM card connector and a second SIM card connector through a first time slot switch, and the second SIM card controller is connected with a third SIM card connector and a fourth SIM card connector through a second time slot switch. The two time slot switches are adopted, the purpose of extending one SIM card into two is further achieved through the original interface of the SIM card controller for the external extension baseband processor, the mobile terminal for the four SIM cards can be freely adapted to the selection of the multi-card scheme, for example, the effect of dual-card double standby, three-card three-standby or four-card four-standby is achieved through a set of baseband chips and radio frequency chips, more selection space is provided for mobile users, and the demands of consumers in different areas to the products can be satisfied.
Description
Technical field
The utility model relates to a kind of portable terminal, particularly a kind of portable terminal of four SIM card.
Background technology
The two standby products of double SIM card almost become a kind of standard configuration of industry on the current mobile terminal, the two standbies of double SIM card can be supported two SIM cards simultaneously on a portable terminal, it is great convenient to be with for numerous mobile subscribers, more portable, and the user does not need always to carry with oneself two mobile phones and two kinds of chargers, can be more versatile and flexible aspect the telephone expenses information, for the user saves more use rate.
As shown in Figure 1, in the structure of the portable terminal of existing double SIM card, baseband processor comprises two special intelligent card interfaces, allows baseband processor to visit the content of two SIM cards, and each SIM card can be operated by following 4 holding wires:
The power supply of VSIM:SIM card can be mated output 3V or 1.8V voltage voluntarily according to the type of SIM card;
SCLK:SIM card clock signal, a kind of is to adopt 13Mhz ÷ 4=3.25Mhz, a kind of employing 13Mhz ÷ 12=1.083Mhz;
The reset signal of SRST:SIM card is in order to reset to SIM card inside IC processor;
SIO:SIM card data-signal, it is the order wire of the message transmission of SIM card and baseband processor, for input and output two-way.
The ESD device is an electrostatic-proof protection device, protects SIM card and SIM card controller in plug SIM card process, because of human body abrupt release static, and the inside IC of puncture baseband processor; 0.1uF electric capacity is for the burr signal in the filtering VSIM power supply, makes the SIM card working stability; SIM1CONTROLER and SIM2CONTROLER are respectively the controller of SIM1 card and SIM2 card.
During work; carry out the registration work of every SIM card after the start respectively; because gsm communication agreement regulation; necessary 1 to 2 time slot at interval between RF (radio system) transmits and receives; because the RF emission need take Guard-Period (protection period) time of a time slot; can not cause interference to contiguous physical channel, so need guarantee the safe time interval during action of two SIM card of actual treatment.
The method that adopts round-robin after registration is finished is waited for paging, talk business on the Traffic Channel of every each leisure of card oneself in the time slot of safety.When one of them card when conversing, generally speaking, this moment, upper layer software (applications) can be cut off the action of an other card, and its communicating request information can utilize guarantee informations such as calling transfer that mobile operator provides and incoming call secretarial service not lost; As the TCH that is distributed (Traffic Channel) physical channel and TS0 (control channel) when the safe time interval is arranged, this moment, upper layer software (applications) can not closed the action of an other card fully, can continue to resolve its corresponding PCH information, and and then utilize action such as passage application to understand whether to have phone action such as to dial in; If the action that also needs in the communication process to detect another card will make the real work flow process of protocol stack and baseband processor more complicated.
According to Chinese customs statistics, China's mobile phone exported 5.82 hundred million ones in 2009, and than 5.33 hundred million growths by 9.29% in 2008, export amount was 395.57 hundred million dollars, 385.39 hundred million dollars than last year increase by 2.65%, and continuous growth has also been brought the new variation of cell-phone function demand.
More in national mobile operator quantity such as India, Africa, wherein the mobile operator of indian country surpasses 14 families, although be global fastest-rising mobile phone market, but India mobile operator is too much, interconnecting of mobile network is not fine between each operator, and fierce price war has caused the low excessively disastrous effect of profitability.
But for the as above mobile consumption user of these countries, too many mobile operator, fierce price war allows the user be ready to select simultaneously to use the information service of how tame mobile operator, the two standby products of double SIM card can't satisfy so, and four SIM card, four standby mobile teminal equipment are ready to appear.
In sum,, need a kind of portable terminal of four SIM card especially, to solve above-mentioned problem at the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of portable terminal of four SIM card, solve the defective of above-mentioned prior art, have than high performance-price ratio, just can use the service of four SIM cards on mobile terminal device, cost saving, be convenient for carrying, switch flexibly, significantly reduced the hardware resource of system, software algorithm is simple relatively, there is not problem of co-channel interference, has lower power consumption.
The technical problem that the utility model solved can realize by the following technical solutions:
A kind of portable terminal of four SIM card, it comprises a baseband processor, it is characterized in that, described baseband processor is provided with the first SIM card controller and the second SIM card controller, the described first SIM card controller connects first sim card connector and second sim card connector respectively by one first time slot switch, and the described second SIM card controller connects Three S's IM card connector and the 4th sim card connector respectively by one second time slot switch.
In an embodiment of the present utility model; be connected with electrostatic-proof protection device respectively and between first sim card connector and second sim card connector at the described first time slot switch; be connected with electrostatic-proof protection device respectively and between Three S's IM card connector and the 4th sim card connector at the described second time slot switch; protection SIM card and SIM card controller are in plug SIM card process; because of human body abrupt release static, and the inside IC of puncture baseband processor.
In an embodiment of the present utility model, power end at the described first SIM card controller, the second SIM card controller, the first time slot switch, the second time slot switch, first sim card connector, second sim card connector, Three S's IM card connector and the 4th sim card connector is connected with filter capacitor, burr signal on the filtering power supply signal makes the SIM card working stability.
The portable terminal of four SIM card of the present utility model has following characteristics:
1) have than high performance-price ratio, just can use the service of four SIM cards on mobile terminal device, cost saving is convenient for carrying, and switches flexibly;
2) significantly reduced the hardware resource of system, it is to adopt the dual system of two cover base band+radio systems to realize that scheme was once arranged, hardware cost has almost increased more than one times like this, and the area of PCB (printed circuit) plate also will increase much the significantly rising that has equally also brought cost;
3) software algorithm is simple relatively, in same set of system, realize four SIM card, four idle functions because be, only need basic communication protocol stack software to carry out switching in turn of four SIM card, just can realize four SIM card, four idle functions according to outside two the time slot switches of wireless communication protocol standards control; If adopt the dual system scheme to realize, then to increase the communication protocol between dual system, handle problems such as shared LCD display, brought the rising at double of software work amount, increased system-level unsteadiness, the frequent appearance crashes, and serious problems such as restarts;
4) there is not problem of co-channel interference, has lower power consumption.
The portable terminal of four SIM card of the present utility model, use two time slot switches, original SIM card control unit interface by outside expansion baseband processor, reach and be divided into two, two are divided into four purpose, can free adaptive many card Scheme Selection, as realizing that by a cover base band and radio frequency chip double-card dual-standby, three cards three are treated, four cards four are treated, for the mobile product user presents more selection space, and can satisfy the demand of zones of different consumer, realize the purpose of this utility model product.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is the system construction drawing of the portable terminal of existing double SIM card;
Fig. 2 is the system construction drawing of the portable terminal of four SIM card of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 2, the portable terminal of four SIM card of the present utility model, it comprises a baseband processor 100, baseband processor 100 is provided with the first SIM card controller 110 and the second SIM card controller 120, the first SIM card controller 110 connects first sim card connector 310 respectively by one first time slot switch 210 and second sim card connector, 320, the second SIM card controllers 120 connect Three S's IM card connector 330 and the 4th sim card connector 340 respectively by one second time slot switch 220.
The portable terminal of four SIM card of the present utility model, original SIM card control unit interface by the first time slot switch 210 and the second time slot switch, 220 outside expansion baseband processor 100, the output of the first SIM card controller 110 is not directly to receive on the sim card connector, but insert the first time slot switch 210, carry out secondary distribution and multiplexing back control first sim card connector 310 and second sim card connector 320.
Equally, the output of the second SIM card controller 120 is not directly received on the sim card connector yet, but insert the second time slot switch 220, carry out secondary distribution and multiplexing back control Three S's IM card connector 330 and the 4th sim card connector 340, reach and be divided into two, two are divided into four purpose, have realized that two expand to four cards; Each,, switch carried out independent control by SPI (the Serial PeripheralInterface--Serial Peripheral Interface (SPI)) bus interface of baseband processor 100 channel time slot, cooperated basic communication protocol stack software, realized four SIM card, four idle functions.
The first time slot switch 210 and the second time slot switch 220 are the high speed logic switch, control two SIM card passages respectively and baseband chip communicates by serial (SPI) interface, inner level translator has wide input range, support 1.8V to 5.5V voltage range with the baseband chip interface level, the SIM card interface is supported 1.8V or two kinds of standards of 3.0V; Support double SIM card simultaneously online, can realize that SIM card is switched fast.
The full name of SPI interface is " Serial Peripheral Interface ", means serial peripheral interface, is that Motorola at first defines on its MC68HCXX series processors.The SPI interface is mainly used in EEPROM, FLASH, real-time clock and AD converter, also has between digital signal processor and the digital signal decoder.The SPI interface is to carry out synchronous serial data transmission between CPU and peripheral low speed devices, under the shift pulse of main device, data step-by-step transmission, high-order preceding, low level after, be full-duplex communication, data transmission bauds can reach several Mbps.
SPI interface used herein is three-wire interface: SPICS, SPICK and SPIDATA.Three-wire interface can only be used for register is carried out write operation, can not read, and data width is 8.The function of SPI interface pin such as following table:
Table 1SPI interface pin menu
| Pin name | Characteristic | Direction | Functional description |
| SPICK | Rising edge triggers | From baseband chip | Serial clock signal |
| SPIDATA | Level signal | From baseband chip | Serial data signal |
| SPICS | Low level is effective | From baseband chip | The serial chip selection signal |
SYSRESTB1, SYSRESTB2 are the reset signal of base band output, by this signal the time slot switch are carried out reset initialization; And occur in time the time slot switch being resetted under the unusual situation in the SIM card function and restart, in order to avoid system works as machine.
In the utility model; be connected with electrostatic-proof protection device ESD respectively and between first sim card connector 310 and second sim card connector 320 at the first time slot switch 210; be connected with electrostatic-proof protection device respectively and between Three S's IM card connector 330 and the 4th sim card connector 340 at the second time slot switch 220; protection SIM card and SIM card controller are in plug SIM card process; because of human body abrupt release static, and the inside IC of puncture baseband processor.
In the utility model, power end at the first SIM card controller 110, the second SIM card controller 120, the first time slot switch 210, the second time slot switch 220, first sim card connector 310, second sim card connector 320, Three S's IM card connector 330 and the 4th sim card connector 340 is connected with the 0.1uF filter capacitor, burr signal on the filtering power supply signal makes the SIM card working stability.
Carry out the registration work of every SIM card after the start respectively; because gsm communication agreement regulation; necessary 1 to 2 time slot at interval between RF (radio system) transmits and receives; because the RF emission need take Guard-Period (protection period) time of a time slot; can not cause interference to contiguous physical channel, so need guarantee the safe time interval during action of four SIM card of actual treatment.
Baseband processor 100 under protocol stack sofeware control, the method that adopts round-robin in the time slot of safety, allow every SIM card look in turn net, synchronously, actions such as registration access, position renewal, do the preparation of paging for every SIM card.
When system passed through PCH (paging channel) calling handset user, baseband processor was selected corresponding SIM card in four cards by two time slot switches, and selected SIM card is replied by send response message on RACH (request access channel).The necessary information of system and SIM card exchange as information such as authentication, encryptions, is distributed a TCH (Traffic Channel) to SIM card subsequently then, at this moment just can talk about enterprising the working of TCH.
One of them sends the paging request at RACH (request access channel) when four SIM cards, after baseband processor 100 receives the call request of SIM card, chooses this SIM card by the time slot switch.Distribute a SDCCH (standalone dedicated control channel) by AGCH (Access granted Channel AGCH) for SIM card, on SDCCH, set up exchange message, then go up exchange of control information, on the TCH (Traffic Channel) that distributes, begin conversation at last at SACCH (STOCHASTIC CONTROL channel at a slow speed).
Only used a cover RF, a cover BaseBand, because the upper-layer protocol stack needs collaborative work, therefore the protocol stack of original quadruplet independent operating needs to integrate closely, practical operation will be more complicated.Realize that by a cover protocol stack sofeware this four card four treats effect, because four SIM card, really parallel running of quadruplet system in other words, certain specific physical slot by time can only be distributed to some numbers wherein, therefore realizes it being feasible with a cover protocol stack fully.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the portable terminal of a SIM card, it comprises a baseband processor, it is characterized in that, described baseband processor is provided with the first SIM card controller and the second SIM card controller, the described first SIM card controller connects first sim card connector and second sim card connector respectively by one first time slot switch, and the described second SIM card controller connects Three S's IM card connector and the 4th sim card connector respectively by one second time slot switch.
2. the portable terminal of four SIM card as claimed in claim 1; it is characterized in that; be connected with electrostatic-proof protection device respectively and between first sim card connector and second sim card connector at the described first time slot switch, be connected with electrostatic-proof protection device respectively and between Three S's IM card connector and the 4th sim card connector at the described second time slot switch.
3. the portable terminal of four SIM card as claimed in claim 1, it is characterized in that, be connected with filter capacitor at the power end of the described first SIM card controller, the second SIM card controller, the first time slot switch, the second time slot switch, first sim card connector, second sim card connector, Three S's IM card connector and the 4th sim card connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206618753U CN201904834U (en) | 2010-12-14 | 2010-12-14 | Mobile terminal for four SIM cards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206618753U CN201904834U (en) | 2010-12-14 | 2010-12-14 | Mobile terminal for four SIM cards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904834U true CN201904834U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206618753U Expired - Fee Related CN201904834U (en) | 2010-12-14 | 2010-12-14 | Mobile terminal for four SIM cards |
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| CN (1) | CN201904834U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970775A (en) * | 2012-11-27 | 2013-03-13 | 惠州Tcl移动通信有限公司 | Mobile terminal and SIM (subscriber identity module) card status switching method |
| CN103714597A (en) * | 2012-09-29 | 2014-04-09 | 赖哲浩 | Cellphone wireless remote control electronic lock |
| CN103988218A (en) * | 2011-10-31 | 2014-08-13 | 金钱及数字保护许可两合有限公司 | Authentication method |
| US8849350B1 (en) | 2013-05-18 | 2014-09-30 | Qualcomm Incorporated | Quad SIM functionality for a dual active mobile device |
| CN104346305A (en) * | 2013-08-08 | 2015-02-11 | 联芯科技有限公司 | Method and system for supporting low-impedance SIM card by common SIM card controller |
| CN111556542A (en) * | 2020-06-19 | 2020-08-18 | 展讯通信（上海）有限公司 | SIM card switching circuit, SIM card switching method and terminal equipment |
-
2010
- 2010-12-14 CN CN2010206618753U patent/CN201904834U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103988218A (en) * | 2011-10-31 | 2014-08-13 | 金钱及数字保护许可两合有限公司 | Authentication method |
| CN103988218B (en) * | 2011-10-31 | 2018-10-26 | 金钱及数字保护许可两合有限公司 | Authentication method |
| CN103714597A (en) * | 2012-09-29 | 2014-04-09 | 赖哲浩 | Cellphone wireless remote control electronic lock |
| CN102970775A (en) * | 2012-11-27 | 2013-03-13 | 惠州Tcl移动通信有限公司 | Mobile terminal and SIM (subscriber identity module) card status switching method |
| US8849350B1 (en) | 2013-05-18 | 2014-09-30 | Qualcomm Incorporated | Quad SIM functionality for a dual active mobile device |
| CN104346305A (en) * | 2013-08-08 | 2015-02-11 | 联芯科技有限公司 | Method and system for supporting low-impedance SIM card by common SIM card controller |
| CN104346305B (en) * | 2013-08-08 | 2017-06-16 | 联芯科技有限公司 | Method and system for supporting low-impedance SIM card by common SIM card controller |
| CN111556542A (en) * | 2020-06-19 | 2020-08-18 | 展讯通信（上海）有限公司 | SIM card switching circuit, SIM card switching method and terminal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20131214 |