CN101035343B - Multi-mode mobile phone - Google Patents
Multi-mode mobile phone Download PDFInfo
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- CN101035343B CN101035343B CN2007100976165A CN200710097616A CN101035343B CN 101035343 B CN101035343 B CN 101035343B CN 2007100976165 A CN2007100976165 A CN 2007100976165A CN 200710097616 A CN200710097616 A CN 200710097616A CN 101035343 B CN101035343 B CN 101035343B
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- baseband processors
- wireless baseband
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Abstract
The invention relates to one kind of multi-model mobile telephone. It includes antenna, the radio frequency module, the wireless baseband and the applied processor (1). Its characteristic is that it has over two wireless baseband processors. Among them, at least one wireless baseband (21) and one applied processor (1) are connected by tandem bus (3) Merits of the multi-model mobile telephone compared with now available mobile telephone are as follows: (1) It retrenches the required pins in the applied processor. (2) It is convienient in expanding, adding or replacing of the wireless base-band processor.(3)The transmission rate can reach 12 Mbps according to the USB bus. Other form of bus may be choosen to realize the mobile telephone frame.(4) According to the USB bus used in the example, data can be transmitted on the dummy bus at the same time. It saves the code control and cuts down the unnecessary use of bandwidth.
Description
Technical field
The present invention relates to communication terminal, be specifically related to a kind of multi mode terminal of multi-processor structure.
Background technology
Along with to mobile intelligent, multimedization require increasingly highly, the function of processor also requires from strength to strength in the mobile phone.Simultaneously, can net use in order to realize a machine, people have proposed the demand of multi mode terminal more.In the exploitation of multi mode terminal; For the application end exploitation and the exploitation of wireless side get in touch still less or correlation littler; Also promptly can mate more eurypalynous mobile phone wireless communication for the software of same application end; Like GSM, CDMA, WCDMA, TD-SCDMA etc., the mobile phone framework of dual processor and multiprocessor is more and more favored in the design of mobile phone.But the communication between the multiprocessor has here then become a key issue in this framework.
The connection of multiprocessor has parallel mode and serial mode traditionally.The mode that wherein links through parallel data line and control line, it is just too many with wiring to connect stitch between the processor, is unpractical for this small and exquisite embedded product of mobile phone, and too much holding wire will bring the more interference and fault more simultaneously.So the general employing that between the mobile phone multiprocessor, connects is serial mode.And in mode connected in series, mainly be based on serial connection such as a RS232 mouthful standard.Such serial interface standard has limitation such as point-to-point communication, the communication between the general only suitable dual processor.As to support another to the connection between the processor, and then need another to the serial communication physical link, this will increase the size of mobile phone undoubtedly again, so present multi mode terminal generally is exactly the dual processor mobile phone.
Along with the vicinity of 3G, according to the regulation of International Telecommunication Association, the 3G (Third Generation) Moblie technology is that the transmission rate of 3G under static state should reach 2M, is issued to 384K in the walking mobile status in addition.For adopting traditional serial ports realization multiprocessor CPU communication, message transmission rate will become a bottleneck between the processor CPU like this.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of multi mode terminal, can the transfer of data of high-speed multiple channel be provided between its multiprocessor and be easy to the expansion of processor number.
Above-mentioned technical problem of the present invention solves like this; Provide a kind of multi mode terminal to comprise antenna, radio-frequency module, wireless baseband processors and the application processor that is electrically connected successively; It is characterized in that; Said wireless baseband processors is more than two, and wherein at least one is connected through USB or usb bus with said application processor.
According to multi mode terminal provided by the invention, said application processor is provided with master controller and is connected with said serial bus, as main control end; One or more said wireless baseband processors are provided with corresponding slave controller and are connected with said serial bus, as client; When carrying out client-side extensions, the wireless baseband processors that has slave controller that needs are expanded inserts said serial bus.
According to multi mode terminal provided by the invention, the said wireless baseband processors that is provided with corresponding slave controller adopts self-powered mode or externally fed mode; In said externally fed mode; Also comprise the power supply circuits and the power switch that are connected with said serial bus; Said power switch is connected with said master controller; Said master controller enables to trigger said power switch through power supply, said slave controller is carried out voltage supply with control, thereby reach said main control end the control of a plurality of clients is coordinated; In said self-powered mode, need not externally fed circuit and power switch, can save the application processor pin simultaneously.
According to multi mode terminal provided by the invention, the said wireless baseband processors that is provided with corresponding slave controller can be the 3G wireless baseband processors.
According to multi mode terminal provided by the invention, said 3G wireless baseband processors comprises one or more in WCDMA chip, CDMA EVDO chip and the TD-SCDMA chip.
According to multi mode terminal provided by the invention, the serial ports that said application processor can also keep a point-to-point communication does not connect with the corresponding serial ports of the wireless baseband processors of corresponding slave controller with one.
According to multi mode terminal provided by the invention, it is RS232, RS-422 or RS-485 that said serial ports includes, but are not limited to; Connecting line between the said RS232 serial ports is the UART Serial Port Line.
According to multi mode terminal provided by the invention, said can not be the 2G wireless baseband processors with the wireless baseband processors of corresponding slave controller.
According to multi mode terminal provided by the invention, said 2G wireless baseband processors can be GSM or CDMA chip.
According to multi mode terminal provided by the invention, said application processor includes, but are not limited to the PXA27x processor of Intel or the S3C44B0X processor of Samsung.
According to multi mode terminal provided by the invention, said bus can be usb bus, IEEE1394 bus, system bus or self-defined bus.
Multi mode terminal provided by the invention; Adopt the serial bus structure to be easy to extensible processor; Utilize the serial bus controller can satisfy message transmission rate between the processor that 3G requires simultaneously; Compare with existing multi mode terminal, have the following advantages: 1) pin of required application processor is few, has saved the pin resource greatly; 2) expansion convenience is added new wireless baseband processors or the replacement wireless baseband processors is all very convenient, realizes multi mode terminal truly; 3) transmission rate is fast, comes connected mode according to the usb bus of giving an example, and transmission rate can reach 12Mbps.But also can adopt other various bus forms as required, realize the multi mode terminal framework neatly; 4) in addition, according to the usb bus connected mode of giving an example, also having an important function is on this transmission line, to fictionalize a plurality of paths, carries out the transmission of data simultaneously.And need need not add the MUX agreement in addition and carry out multiplexed as traditional serial ports.Saved code control and reduced waste of bandwidth.
Description of drawings
Further the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is the multi mode terminal theory diagram of serial bus structure of the present invention.
Fig. 2 is that the multi mode terminal hardware of serial bus structure of the present invention connects sketch map.
Fig. 3 is the multi mode terminal software/hardware module diagram of serial bus structure of the present invention.
Embodiment
At first, core of the present invention is described: adopt bus connecting mode to realize high-speed communication between the multiprocessor CPU and expansion in bimodulus and the multi mode terminal, PXA27x processor and the usb bus with Intel is that example specifically describes the present invention below:
Intel PXA27x processor is as the proprietary application processor, and other wireless baseband processors is the special disposal wireless traffic then.Be connected with each other through usb bus between them, wherein application processor is as the USB main control end, and each wireless baseband processors is as the USB client.For supporting 127 USB devices on the usb bus, this numeral will fully guarantee under the situation that does not increase the communication line, really to realize multi mode terminal neatly, as long as the wireless baseband processors that will expand is suspended in the usb bus.Need to prove that the wireless baseband processors that can be suspended in the usb bus need be supported the USB standard, basically all support this function for present 3G chip.
In addition, second generation radio communication GSM chip has some not to be with the USB controller, in order to support them, has kept the passage of a serial ports, to set up the bridge of communicating by letter between second generation wireless communication chips and the application processor.Utilize this in mobile phone unusual mature technique, can successfully be implemented in a mobile phone, support manyly for wireless network simultaneously, this also just provides great convenience for mobile subscriber and operator.Adopt bus connecting method to realize that the framework of the many CPU communications of multi mode terminal is as shown in Figure 1; Comprise application processor 1,3G wireless baseband processors 21,2G wireless baseband processors 22; Serial bus 3 between 3G wireless baseband processors 21 and the application processor 1,2G wireless baseband processors 22 and and application processor 1 between UART Serial Port Line 4.
Second step was an example with PXA27x processor and the usb bus of Inte1, explained that PXA27x application processor is connected with hardware between two other wireless baseband processors GSM and the TD-SCDMA, and is as shown in Figure 2.Mainly by four most of compositions: the 3G wireless baseband processors 21 of application processor 1, TD-SCDMA, the 2G wireless baseband processors 22 of GSM, USB master controller 5, USB slave controller 6 and USB switching circuit of power supply 7 are formed.
(1) application processor 1 is an application CPU, and 2G wireless baseband processors 22 is gsm wireless CPU, adopts traditional serial ports to connect between the two.
(2) 3G wireless baseband processors 21 is the 3G wireless CPU, is example with TD-SCDMA, and it adopts USB to be connected before with application processor 1, and it can provide the speed up to 12Mbps, can satisfy the needs of the miscellaneous service of 3G fully.
In Fig. 2, also need add USB switching circuit of power supply 5 between USB master controller 5 and the USB slave controller 6, to accomplish the supply of voltage.When the power supply of USB master controller 5 enabled to be 1, USB switching circuit of power supply 7 was to USB slave controller 6 output high level.The function of overcurrent protection is provided if desired; We need add in a current foldback circuit or the main control chip/application processor 1 and carry this function; Promptly can monitor the size of current between USB master controller 5 and the USB slave controller 6 at the over-current detection pin of USB master controller 5 like this; When electric current surpasses usb protocol setting: 100mA or 500mA, open circuit, with protection USB master controller 5 and USB slave controller 6.In addition, D+ between USB master controller 5 and the USB slave controller 6 and D-are differential signal line, the interference in the time of can reducing high-speed transfer.
In addition, the mode of same main control chip/application processor 1 of the mode of main control chip/3G wireless baseband processors 21 and USB slave controller 6 and USB master controller 5.Expand more wireless baseband processors on this basis, can adopt hardware connection mode same among Fig. 2.
(3) in addition; If 3G wireless baseband processors 21 adopts self-powered USB mode; USB master controller 5, USB switching circuit of power supply 7 and power supply enable pin between the two and over-current detection pin can omit so; 2 pins of minimum needs of application processor like this: D+ holding wire and D-holding wire; Just can connect maximum 127 wireless baseband processors, significantly reduced the consumption of hardware pin, and the application processor pin is a very rare resource in the hardware designs of mobile phone.
The 3rd step, schematic illustration bus referenced drive of the present invention execution mode:
Adopt bus connecting method to realize that the referenced drive theory diagram of the many CPU communications of multi mode terminal is as shown in Figure 3, the driving of USB master control end can be divided into three layers, is respectively that the USB device class drives USBD and HCD from top to bottom.Wherein the back is two-layer is exactly to belong to USB HOST to drive.
Can see that from figure it is final and the mutual software module of application program that the USB device class drives, its main function has: visit specific USB device, for application program provides access interface etc.To different wireless baseband processors, the USB device class drives different.
USBD is exactly that USB drives, and it can be described as the core that whole USB drives.It mainly is responsible for: usb bus management, usb bus equipment and usb bus Bandwidth Management, the interface of usb data transmission etc. is provided.Wherein, USB root HUB is a kind of USB device in fact, but as a kind of special USB device, its driving also realizes at the USBD layer.To different wireless baseband processors, the USBD layer is general.
HCD drives to the USB master controller, and it will be directly mutual with USB HOST controller hardware.Its major function has: the initialization of master controller hardware, for USBD the corresponding interface function is provided, realize to root HUB configuration of devices with control, accept transmission from USBD URB request, completion data.
Combine three steps of front at last, can find out the invention provides a kind ofly provides the transfer of data of high-speed multiple channel and is easy to expand the multi mode terminal method for designing between multi mode terminal multiprocessor CPU.
Claims (8)
1. multi mode terminal; Comprise the antenna, radio-frequency module, wireless baseband processors and the application processor that are electrically connected successively; It is characterized in that said wireless baseband processors is more than two, wherein at least one wireless baseband processors is connected through serial bus with said application processor; Said application processor is provided with master controller and is connected with said serial bus, as main control end; One or more said wireless baseband processors are provided with corresponding slave controller and are connected with said serial bus, as client;
The said wireless baseband processors that is provided with corresponding slave controller adopts self-powered mode or externally fed mode; When adopting the externally fed mode; Also comprise the power supply circuits and the power switch that are connected with said serial bus, said power switch is connected with said master controller, and said master controller enables to trigger said power switch through power supply; Said slave controller is carried out voltage supply with control, the control of a plurality of clients is coordinated thereby reach said main control end;
When carrying out client-side extensions, the wireless baseband processors that has slave controller that needs are expanded inserts said serial bus.
2. according to the said multi mode terminal of claim 1, it is characterized in that the said wireless baseband processors that is provided with corresponding slave controller is the 3G wireless baseband processors.
3. according to the said multi mode terminal of claim 2, it is characterized in that said 3G wireless baseband processors comprises one or more in WCDMA chip, CDMA EVDO chip and the TD-SCDMA chip.
4. according to the said multi mode terminal of claim 1, it is characterized in that the serial ports that said application processor also keeps a point-to-point communication does not connect with the corresponding serial ports of the wireless baseband processors of corresponding slave controller with one.
5. according to the said multi mode terminal of claim 4, it is characterized in that the serial ports of said point-to-point communication is RS232, RS-422 or RS-485.
6. according to the said multi mode terminal of claim 5, it is characterized in that said is not the 2G wireless baseband processors with the wireless baseband processors of corresponding slave controller.
7. according to the said multi mode terminal of claim 1, it is characterized in that said serial bus is usb bus, IEEE1394 bus, system bus or self-defined bus.
8. according to the said multi mode terminal of claim 1, it is characterized in that said application processor writes or reads control word or data by said master controller to said master controller through address and data wire; One or more said wireless baseband processors write or read control word or data by said slave controller to said slave controller through address and data wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007100976165A CN101035343B (en) | 2007-04-24 | 2007-04-24 | Multi-mode mobile phone |
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| CN2007100976165A CN101035343B (en) | 2007-04-24 | 2007-04-24 | Multi-mode mobile phone |
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| CN101035343A CN101035343A (en) | 2007-09-12 |
| CN101035343B true CN101035343B (en) | 2012-04-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247600B (en) * | 2008-02-26 | 2012-06-06 | 中兴通讯股份有限公司 | Device for implementing multi-serial port in multi-module mobile phone system |
| US8121643B2 (en) * | 2008-02-27 | 2012-02-21 | Mediatek Inc. | Methods for initiating operating voltages for subscriber identity cards and systems utilizing the same |
| CN101534577B (en) * | 2008-03-14 | 2012-04-11 | 上海摩波彼克半导体有限公司 | Connecting circuit structure of wireless terminal system and electronic device and power-supply control method thereof |
| CN101820459A (en) * | 2010-02-10 | 2010-09-01 | 青岛海信移动通信技术股份有限公司 | Interface circuit of communication equipment and intelligent mobile communication terminal |
| CN101841925B (en) | 2010-04-21 | 2012-10-17 | 华为终端有限公司 | Method, device and system for communication among double central processing units |
| CN101931700B (en) * | 2010-08-20 | 2012-12-19 | 北京天碁科技有限公司 | Method for realizing communication between smart mobile phone chips and smart mobile phone |
| CN102394665A (en) * | 2011-06-28 | 2012-03-28 | 中兴通讯股份有限公司 | Radio frequency transceiver system and mobile terminal |
| CN109831562B (en) * | 2019-03-28 | 2021-08-06 | Oppo广东移动通信有限公司 | Mobile terminal and master-slave communication structure thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1698339A (en) * | 2002-08-27 | 2005-11-16 | 高通股份有限公司 | Low power dual processor architecture for multi mode devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1698339A (en) * | 2002-08-27 | 2005-11-16 | 高通股份有限公司 | Low power dual processor architecture for multi mode devices |
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