CN101291474A - Bi-mode mobile phone and switching method thereof - Google Patents
Bi-mode mobile phone and switching method thereof Download PDFInfo
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- CN101291474A CN101291474A CNA2007100395773A CN200710039577A CN101291474A CN 101291474 A CN101291474 A CN 101291474A CN A2007100395773 A CNA2007100395773 A CN A2007100395773A CN 200710039577 A CN200710039577 A CN 200710039577A CN 101291474 A CN101291474 A CN 101291474A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The invention discloses a dual-mode mobile phone, which adopts an EDGE processor module as the main processor of the mobile phone and is connected with a CDMA processor module through a serial port. The CDMA processor module is taken as a slave processor. The main processor module and the slave processor module which respectively have separate independent SIM cards share an LCD display, a keyboard, a loudspeaker, a receiver and a microphone. The main processor module and the slave processor module switch sound channels and speech information mainly through a sound analog switch and a corresponding interruption signal collector. The invention also discloses a switching method for the dual-mode mobile phone. The method is realized through sending an interruption from the CDMA processor of the slave module to the EDGE processor module. The invention reduces the configuration requirements on the basic frequency or sub-frequency of a CPU and freely controls the sleep status of the mobile phone, thereby greatly reducing standby power consumption and improving radio performance.
Description
Technical field
The present invention relates to a kind of mobile phone, especially a kind of dual-mode handset that adopts EDGE network to communicate.The invention still further relates to a kind of changing method of dual-mode handset.
Background technology
EDGE be a kind of between being referred to as from GPRS to 3G 2.75 generation the communication technology, it seamlessly transits from GPRS network, and the networking speed higher 3 times than GPRS can be provided.From the upgrading of GPRS to EDGE, only need carry out the upgrading on the software, technical very simple.
From cost of investment, the advantage of EDGE is fairly obvious.About 8,000 ten thousand yuan of wide dark east (Guangzhou, Shenzhen, Dongguan) EDGE pilot project actual investment that move in Guangdong, the investment of not enough GPRS 1/10th but makes the network rate on three ground improve nearly 3 times.
On propagation rate, the desirable transmission rate that EDGE can provide is 384Kbps, and local area data communication propagation rate is 2Mbps, and this has reached international telecommunication unit and has required the speed that 3G reached.And analyze from cost, the upgrading GPRS network only need be invested many 20% to EDGE and just can be reached, and moves fully and can be like a cork to finish data traffic requirement to high-end user by means of EDGE.
CDMA is the english abbreviation (Code Division Muitiple Access) of code division multiple access, and it is a kind of brand-new and ripe wireless communication technology that grows up on branch's one spread spectrum technic of digital technology.The principle of CDMA technology is based on spread spectrum, need to be about to certain signal bandwidth information data that has of transmission, modulate much larger than the high speed pseudo noise code of signal bandwidth with a bandwidth, the bandwidth of former data-signal is expanded, again through carrier modulation and send.Receiving terminal uses identical pseudo noise code, makes relevant treatment with the bandwidth signal that receives, and the narrow band signal that broadband signal is changed into the prime information data is despreading, to realize information communication.
Mobile communication system has multiple sorting technique.For example, can be divided into simulation, numeral by the signal properties branch; By the modulation system branch, can be divided into frequency modulation, phase modulation, amplitude modulation; Press the multi-address connecting mode branch, can be divided into frequency division multiple access (FDMA), time division multiple access (TDMA) and code division multiple access (CDMA).What CHINAUNICOM, the employed GSM mobile phone network of China Mobile adopted at present is the combination of FDMA and TDMA dual mode.GSM has very big advantage than analog mobile telephone, still, only is 3 times of analogue system on spectrum efficiency, finite capacity; On speech quality, also be difficult to reach the telephone level; TDMA terminal access rate is the highest also can only to reach 9.6kbit/s; Tdma system does not have the soft handover function, thereby easy call drop, influences service quality.Therefore, TDMA is not that the optimal wireless of modern cellular mobile communication inserts, and the CDMA multiple access technology is fit to the desired big capacity of present mobile communication net, high-quality, integrated service, soft handover etc. fully, just is being subjected to increasing operator and user's favor.
The appearance of dual-mode handset (comprising EDGE/EDGE, PHS/GSM, EDGE/PHS, EDGE/W, EDGE/TD-SW standard) is to have complied with the demand in market and development and a kind of product of occurring, has been an indispensable part of whole mobile phone consumption market.Dual-mode handset at first is flexible selectivity for their meaning, which network technology more can play a role, just allow mobile phone switch to the work of going down of which kind of pattern, if in one mode, mobile communication is of low quality or other bad communication phenomenons occur, can freely forward on the another one network schemer and work.More crucial is that owing to dual-mode handset can be operated among the network of two different technologies simultaneously, so dual-mode handset has the characteristics of these two kinds of network technologies undoubtedly.It is reported, in the area that some cellphone subscribers relatively concentrate, especially suitable use dual-mode handset, by the switching between the heterogeneous networks, can remain conversation constantly, and received signal simultaneously, then with the signal synthesis stack that receives, noise signal is filtered, and outstanding voice signal is enjoyed thereby obtain high-quality voice.The appearance of dual-mode handset, for the user, impression will be the darkest undoubtedly, will be again most realistic simultaneously.By two networks, the call drop phenomenon will significantly reduce, and throw into and get free more, can obtain all advantages of two kinds of network technologies simultaneously.Simultaneously, for a machine that solves a lot of two card users is simultaneously online very large meaning arranged.
In addition, dual-mode handset adopts broadband technology, support call transfer, Call Waiting, tripartite talk, caller ID display, short message, voice mail, the multiple function of automatic roaming.
But also there are problems in present dual-mode handset.The two card of existing machine dual-mode handsets have adopted the method for timesharing scanning usim card to realize that two cards come interacting user information with the base station in real time in system design, and analysis is feasible theoretically.But be to have uncertain risk in the application of reality.
The clock frequency of SIM card is provided by portable terminal usually, and the Transmission bit rate of I/O output input is 1/372 of a clock frequency, and general message transmission rate can reach 3.25MHz, SIM card when working method, finish and portable terminal between message transmission.And adopt the dual-mode handset of timesharing scanning inevitable very high to the requirement of this sequential, that is to say must be more than 7.5MHz to control timesharing scan mechanism, therefore, must require very high to whole designed system, the configuration that specifically comprises requirement CPU improves, and mobile telephone power consumption is increased, because this scanning can not stop.If adopt the information gathering mode of I/O mouth inquiry, the sample frequency of I/O mouth will also need the real-time information gathering of doing at least simultaneously more than 8Mbps, therefore is difficult to enter dormancy.In addition, to the RF radio frequency require high because pulse of crosstalking into is enough to stop the work of scanning circuit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of dual-mode handset, and a kind of changing method of dual-mode handset, reduce for the dominant frequency of CPU or the requirement of frequency division, be free to control the sleep state of mobile phone, thereby reduce stand-by power consumption greatly, and improve the performance of radio frequency.
For solving the problems of the technologies described above, the technical scheme of dual-mode handset of the present invention is, comprise,
The EDGE processor module is used for carrying out the communication of EDGE network, and described EDGE processor module is connected with RF radio-frequency module, LCD display module and Keysheet module;
The CDMA processor module is used for making mobile phone to communicate at cdma network, and described CDMA processor module is connected with the CDMA radio-frequency module; Communicate by serial ports between described CDMA processor module and the described EDGE processor module, also be connected between described CDMA processor module and the described EDGE processor module by the handshake line, the information of described CDMA processor module can show that described CDMA processor module can be by the signal of described EDGE processor module reception from described Keysheet module by described EDGE processor module on described LCD display module;
The audio frequency simulation switch, described audio frequency simulation switch is connected with loudspeaker, receiver and microphone, described audio frequency simulation switch is connected with the audio signal of described EDGE processor module and CDMA processor module respectively, and, between described EDGE processor module and CDMA processor module, carry out audio frequency and switch by audio frequency switching signal control from the EDGE processor module;
The interrupt signal collector, described interrupt signal collector is connected to the interrupting input end of described EDGE processor module by described CDMA processor module, triggers the interrupt response of described EDGE processor module according to the requirement of described CDMA processor module.
The technical scheme of the changing method of the above-mentioned dual-mode handset of the present invention is to comprise the steps:
(1) the EDGE processor module powers on;
(2) communication disruption of CDMA processor module is set;
(3) normal display message;
(4) wait for CDMA processor module interrupt response, do not wait for if continue;
(5) if there is the CDMA processor module to interrupt, then show fresh information;
(6) judge whether it is incoming information, if not, returned for (5) step;
(7) if incoming information, then whether inquiry is handled incoming call, if do not handle, returns for (5) step;
(8), then switch sound and information channel if incoming call is handled;
(9) end of conversation returned for (3) step.
The present invention is by combining the CDMA processor module with the EDGE processor module, form dual-mode handset, reduced, be free to control the sleep state of mobile phone for the dominant frequency of CPU or the configuration requirement of frequency division, reduce stand-by power consumption greatly, and improved the performance of radio frequency.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of dual-mode handset of the present invention;
Fig. 2 is the workflow diagram of dual-mode handset of the present invention;
Fig. 3 is the circuit diagram of the audio frequency simulation switch that adopted among the present invention.
Embodiment
The modular structure of EDGE dual-mode handset of the present invention can comprise the EDGE processor module referring to shown in Figure 1, is used for carrying out the communication of EDGE network, and described EDGE processor module is connected with RF radio-frequency module, LCD display module and Keysheet module; The CDMA processor module is used for making mobile phone to communicate at cdma network, and described CDMA processor module is connected with the CDMA radio-frequency module; Communicate by serial ports between described CDMA processor module and the described EDGE processor module, also be connected between described CDMA processor module and the described EDGE processor module by the handshake line, the information of described CDMA processor module can show that described CDMA processor module can be by the signal of described EDGE processor module reception from described Keysheet module by described EDGE processor module on described LCD display module; Also comprise audio frequency simulation switch and interrupt signal collector, described audio frequency simulation switch is connected with loudspeaker, receiver and microphone, described audio frequency simulation switch is connected with the audio signal of described EDGE processor module and CDMA processor module respectively, and by audio frequency switching signal control from the EDGE processor module, carrying out audio frequency between described EDGE processor module and CDMA processor module switches, described interrupt signal collector is connected to the interrupting input end of described EDGE processor module by described CDMA processor module, triggers the interrupt response of described EDGE processor module according to the requirement of described CDMA processor module.Described EDGE processor module also is connected with camera module.Described Keysheet module or key board module, or touchscreen keys disk module, or not only comprised button but also comprised the key-press module of touch-screen.
Dual-mode handset of the present invention has solved the high speed data transfer problem of GSM/CDMA dual-mode handset, the data flow transmission of the 153.6kbps that IS95-B or CDMA2000 1X RTT can reach and EDGE up to the data flow transmission of 384kbps can be at a high speed the light download of realization Large Volume Data stream, and the present invention makes full use of this very mature technique of cdma network, and extraordinary signal, user-friendly.
The changing method of the above-mentioned dual-mode handset of the present invention comprises the steps: as shown in Figure 2
(1) the EDGE processor module powers on; System starts the EDGE processor module earlier, and the EDGE module is finished initialization, and system break vector, independent variable, storehouse, Memory Allocation and memory space mapping are set, and opens radio frequency control then, seeks the net registration; Start the CDMA processor module simultaneously, finish process similarly, the registration SIM card.
(2) communication disruption of CDMA processor module is set;
(3) normal display message;
(4) wait for CDMA processor module interrupt response, do not wait for if continue;
(5) if there is the CDMA processor module to interrupt, then show fresh information;
(6) judge whether it is incoming information, if not, returned for (5) step;
(7) if incoming information, then whether inquiry is handled incoming call, if do not handle, returns for (5) step;
(8), then switch sound and information channel if incoming call is handled;
(9) end of conversation returned for (3) step.
In the course of work of above-mentioned dual-mode handset, the user can be switched the network of mobile phone content displayed and conversation at any time, just switches between described EDGE processor module and CDMA processor module.The user has higher priority for the interrupt operation of EDGE processor module.
Under the general ideal case, the control of LCD display module and Keysheet module etc. are mainly by the EDGE module controls, and display screen can show the network state and the signal strength signal intensity of two standby networks simultaneously.Their real time information is to carry out transparent transmission by special UART1, so, main control unit can very light acquisition from the various state informations of module CDMA.
And for special circumstances, both sides send a telegram here simultaneously or answer side's situation, other side incoming call, and the user can clearly see shown each side's phone and make a choice on display screen.
Dual-mode handset of the present invention can support simultaneously that two card even numbers are simultaneously online, and any time can call out or answer for any number, and priority level can be set.CDMA processor module in the dual-mode handset of the present invention separates the independent SIM card of placing with the EDGE processor module, share LCD display, keyboard KEYPAD, loudspeaker SPEAKER, receiver RECEIVER, microphone, voice-grade channel between the two switches mainly and carries out switch audio passage and voice messaging by an audio frequency simulation switch and corresponding interrupt signal collector.The EDGE module possesses communication capacity at a high speed, and as primary module, from module, communication port between the two is the UART serial ports to the CDMA processor module as common, and transmission means is with transparent application layer host-host protocol, orders as main control command with AT.
The EDGE processor has very powerful disposal ability, has the powerful access capability up to 2Mbps, so, the present invention it as primary processor; The descending supporting rate 73.5Mbps of the CDMAEV-DO version B technology that high pass is being developed, up support 27Mbps, so, be enough as the data communicative channel serial ports (can reach 3.25Mbps) between two processors.The EDGE processor module is responsible for the demonstration of whole system, keyboard interface and sound channel control.
Audio frequency simulation switch among the present invention can adopt the professional audio switching device of the NLAS4783 model of ON company, it is little that this device has a noise, the response time section, bandwidth, the characteristics that power consumption is little, the concrete circuit diagram that is applied to dual-mode handset of the present invention can be referring to shown in Figure 3, wherein, the GPIO control that AUD_SW1, AUD_SW2 and AUD_SW3 come out for the master control module by signal enables, and realizes the switching of the voice-grade channel between the disparate modules.The receiver differential signal that CDMA_EAR1/CDMA_EAR2 comes out for the CDMA processor module, the receiver differential signal that EDGE_EAR1/EDGE_EAR2 comes out for the EDGE processor module, EARP1/EARN2 is for driving the differential signal of external earpiece, MICP/MICN is that signal is read in the input of external microphone, CDMA_MICP/CDMA_MICN is the microphone signal input channel of CDMA processor module, EDGE_MICP/EDGE_MICN is the microphone signal input channel of EDGE processor module, the loudspeaker differential signal that CDMA_SPK1/CDMA_SPK2 comes out for the EDGE processor module, the loudspeaker differential signal that EDGE_SPK1/EDGE_SPK2 comes out for the EDGE processor module, SPK1/SPK2 is for driving the differential signal of outside loudspeaker.
The switching true value of this audio frequency simulation switch is as shown in table 1.
Table 1
| Switch number | AUD_SW1 | AUD_SW2 | AUD_SW3 | Selection result |
| 1 | L | L | H | CDMA |
| 2 | H | L | L | EDGE |
| 3 | H | H | H | Close |
In sum, the present invention has reduced for the dominant frequency of CPU or the configuration requirement of frequency division; Be free to control the sleep state of mobile phone, thereby reduced stand-by power consumption greatly; The performance of radio frequency has also obtained better improvement.
Mobile phone of the present invention is touched mobile phone and is compared with belonging to two treat two of two-shipper together, from cost the competitiveness that more has superiority is arranged, and the control of better system.Traditional two-shipper double standby mobile phone can increase cost and increase the control difficulty because SIM card adopts fuzzy laying method and AT voice channel.
Mobile phone has adopted the EDGE standard, will cause that a revolutionary change takes place aspect high-speed stream media, speech data mobile phone.Very Gao Su data flow will transform a whole community, and changes human life.
Claims (4)
1. dual-mode handset comprises:
The EDGE processor module is used for carrying out the communication of EDGE network, and described EDGE processor module is connected with RF radio-frequency module, LCD display module and Keysheet module;
It is characterized in that, also comprise,
The CDMA processor module is used for making mobile phone to communicate at cdma network, and described CDMA processor module is connected with the CDMA radio-frequency module; Communicate by serial ports between described CDMA processor module and the described EDGE processor module, also be connected between described CDMA processor module and the described EDGE processor module by the handshake line, the information of described CDMA processor module can show that described CDMA processor module can be by the signal of described EDGE processor module reception from described Keysheet module by described EDGE processor module on described LCD display module;
The audio frequency simulation switch, described audio frequency simulation switch is connected with loudspeaker, receiver and microphone, described audio frequency simulation switch is connected with the audio signal of described EDGE processor module and CDMA processor module respectively, and, between described EDGE processor module and CDMA processor module, carry out audio frequency and switch by audio frequency switching signal control from the EDGE processor module;
The interrupt signal collector, described interrupt signal collector is connected to the interrupting input end of described EDGE processor module by described CDMA processor module, triggers the interrupt response of described EDGE processor module according to the requirement of described CDMA processor module.
2. dual-mode handset according to claim 1 is characterized in that, described EDGE processor module also is connected with camera module.
3. dual-mode handset according to claim 1 is characterized in that, described Keysheet module or key board module, or touchscreen keys disk module, or not only comprised button but also comprised the key-press module of touch-screen.
4. the changing method of a dual-mode handset as claimed in claim 1 is characterized in that, comprises the steps:
(1) the EDGE processor module powers on;
(2) communication disruption of CDMA processor module is set;
(3) normal display message;
(4) wait for CDMA processor module interrupt response, do not wait for if continue;
(5) if there is the CDMA processor module to interrupt, then show fresh information;
(6) judge whether it is incoming information, if not, returned for (5) step;
(7) if incoming information, then whether inquiry is handled incoming call, if do not handle, returns for (5) step;
(8), then switch sound and information channel if incoming call is handled;
(9) end of conversation returned for (3) step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100395773A CN101291474A (en) | 2007-04-18 | 2007-04-18 | Bi-mode mobile phone and switching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100395773A CN101291474A (en) | 2007-04-18 | 2007-04-18 | Bi-mode mobile phone and switching method thereof |
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| CN101291474A true CN101291474A (en) | 2008-10-22 |
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| CNA2007100395773A Pending CN101291474A (en) | 2007-04-18 | 2007-04-18 | Bi-mode mobile phone and switching method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998699A (en) * | 2009-08-11 | 2011-03-30 | 深圳市三木通信技术有限公司 | Mobile communication terminal |
| CN102300338A (en) * | 2010-06-22 | 2011-12-28 | Lg电子株式会社 | Mobile terminal and method of controlling communication data transmission and communication list display therein |
-
2007
- 2007-04-18 CN CNA2007100395773A patent/CN101291474A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998699A (en) * | 2009-08-11 | 2011-03-30 | 深圳市三木通信技术有限公司 | Mobile communication terminal |
| CN102300338A (en) * | 2010-06-22 | 2011-12-28 | Lg电子株式会社 | Mobile terminal and method of controlling communication data transmission and communication list display therein |
| US8621397B2 (en) | 2010-06-22 | 2013-12-31 | Lg Electronics Inc. | Mobile terminal and method of controlling communication data transmission and communication list display therein |
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Open date: 20081022 |