CN1925676A - Switching device and method for mobile communication terminal - Google Patents
Switching device and method for mobile communication terminal Download PDFInfo
- Publication number
- CN1925676A CN1925676A CNA2006101037352A CN200610103735A CN1925676A CN 1925676 A CN1925676 A CN 1925676A CN A2006101037352 A CNA2006101037352 A CN A2006101037352A CN 200610103735 A CN200610103735 A CN 200610103735A CN 1925676 A CN1925676 A CN 1925676A
- Authority
- CN
- China
- Prior art keywords
- temperature
- mobile communication
- communication terminal
- crystal oscillator
- tcxo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The present invention discloses a switching device and method for mobile communication terminal which belongs to the mobile communication terminal parts and mobile communication technique. The device of the invention comprises: a temperature detection component for detecting the temperature of TCXO; a control component for judging the temperature of the TCXO, controlling the switch of gpsOne communication mode and other communication modes. The switching method comprises: detecting the temperature of TCXO in the mobile communication terminal when requesting the emergency service; comparing the detected TCXO temperature with the assigned reference temperature; switching the current communication mode into other communication mode and executing the gpsOne function if the TCXO temperature is higher than the reference temperature. Therefore, TCXO overheating caused by the power amplifiers heating which degrades the position calculation accuracy is prevented when the three modes utilizing the gpsOne function.
Description
Technical field
The invention belongs to the parts and the mobile communication technology of mobile communication terminal, especially relate to a kind of switching device shifter and method of mobile communication terminal.
Background technology
Generally, three moulds (Tri Mode) terminal is to support three frequency band (PCS:1850～1990MHz, GPS:1570～1580MHz, the terminal of DCN:824MHz～894MHz), when the user utilizes the gpsOne function of mobile communication terminal of E911 service, signal is communicated to PCS or DCN module three mould terminals separately, and three mould terminals are carried out work.
As a reference, above-mentioned gpsOne mode is the technology of U.S. qualcomm company exploitation, be a kind of the utilization on the gps satellite signal trace location, receive satellite information from mobile radio communication in advance, make it follow the trail of gps satellite signal, therefore shorten the required time of location tracking, and improve the mode of collection of letters sensitivity.
And then if when utilizing three mould terminals of existing gpsOne function, the user utilizes PCS or DNC talk channel to receive with the information-related data of gps satellite and transmits the information of the data etc. of virtual scope when asking E911 (emergency service).
The time that arrives user's receiver from the signal of gps satellite emission takes advantage of in the light velocity, calculate the distance between satellite and the user, above-mentioned virtual scope data mean this distance, and the data of this virtual scope are sent to the base station of appointment, and user position information is calculated in this base station.
But, during for the gpsOne function of E911 (emergency service) service execution terminal, if the user when weak electric field region, along with the increase of delivering power, the heating of power amplifier (PAM) is also deepened, then temperature compensating crystal oscillator (TCXO) will be by thermalization.When three mould terminals are utilized the gpsOne function, prevent that because the thermalization of the temperature compensating crystal oscillator that the heating of power amplifier causes, the position calculation correctness of terminal descends.
The said temperature compensated crystal oscillator is that the frequency that causes along with variation of temperature in the crystal oscillator is confused the device of controlling, and is mainly used at-30～75 degree, and 2.5ppm produces stable fixed frequency with interior frequency nonoscillatory.
Therefore, the characteristic of the stable frequency of said temperature compensated crystal oscillator can be described as the GPS performance and guarantees necessary, if when reducing the frequency characteristic of TCXO because of thermalization, it is difficult that correct virtual scope data computing can become, cause the GPS mis-behave of terminal and the accuracy of position to reduce, the user can't obtain the E911 service rapidly under state of necessity at last.
Summary of the invention
The present invention is in order to solve above-mentioned prior art problems, and its purpose is to provide a kind of switching device shifter of mobile communication terminal, prevents because the thermalization of the temperature compensating crystal oscillator that the heating of power amplifier causes and the position calculation correctness of terminal descends.
The present invention in order to achieve the above object is characterized in that comprising: temperature detecting part, and measurement is installed in the temperature of the temperature compensating crystal oscillator of mobile communication terminal body; Control part according to the temperature of judging TCXO from the detected temperature information of said temperature test section, and switches to other call modes according to this temperature control from the call mode of carrying out the gpsOne function.
In addition, the present invention in order to achieve the above object, the changing method of mobile communication terminal of the present invention comprises the steps: in the time need utilizing the emergency service of mobile communication terminal, the step of the temperature of the temperature compensating crystal oscillator in the sense terminals; The temperature of the TCXO of more above-mentioned detection and the step of the fiducial temperature of appointment; When the temperature of above-mentioned TCXO is higher than fiducial temperature, existing call mode is transformed into the step of carrying out the gpsOne function behind other the call mode.
The present invention aims to provide a kind of switching of mobile communication terminal, under the PCS pattern of three mould terminals, when request E911 serves in the conversation, if temperature compensating crystal oscillator (TCXO) can operate as normal temperature, start the gpsOne function immediately, if not the temperature of operate as normal, terminal is transformed into other DCN pattern, thereby can normally opens the gpsOne function.
The present invention also aims to provide a kind of switching method of mobile communication terminal, opposite under the DCN pattern of three mould terminals, when request E911 serves (emergency service) in the conversation, if temperature compensating crystal oscillator (TCXO) can operate as normal temperature, start the gpsOne function immediately, if not the temperature of operate as normal, then terminal is transformed into other PCS pattern, can normally start the gpsOne function.
The conversion equipment of mobile communication terminal of the present invention and method have following effect: when utilizing the gpsOne function in the three mould terminals, prevent that because the thermalization of the temperature compensating crystal oscillator that the heating of power amplifier causes, the position calculation correctness of terminal descends.The user improves position correctness in the collection of letters performance of terminal under the state of terminal heating during request E911, is in dangerous user and can in time handles the crisis state of self thereby make, and can also improve the not high shortcoming of correct position degree of E911 service.
Description of drawings
Fig. 1 is the structural representation according to mobile communication terminal of the present invention.
Fig. 2 is the flow chart according to the changing method of mobile communication terminal of the present invention.
Fig. 3 is the flow chart according to other changing methods of mobile communication terminal of the present invention.
The symbol description of accompanying drawing major part
101: the fuselage 201 of mobile communication terminal: temperature detecting part 202: control part
TCXO: temperature compensating crystal oscillator
Embodiment
The invention provides a kind of switching device shifter and method of mobile communication terminal.Following accompanying drawing with reference to this people's preferred embodiment is described in detail.
Fig. 1 is the structured flowchart according to mobile communication terminal of the present invention, the temperature detecting part 201 of the temperature be used to measure temperature compensating crystal oscillator (TCXO) is installed on the fuselage 101 of existing three mould mobile communication terminals, and also comprise, receive the temperature information of said temperature test section 201 detections and judge actual temperature, the call mode for execution gpsOne function is carried out the control part 202 of conversion and control according to the temperature of this judgement.
The magnitude of voltage (or resistance value) that said temperature information is actually by temperature detecting part 201 outputs of electro-hot regulator and temperature detection sensor calculates actual temperature, be convenient to judge that power amplifier (PAM) makes the degree of TCXO heating, this temperature detecting part places by the TCXO.
Control part 202 references are stored voltage/temperature table of comparisons, and the thermalization degree of judgement TCXO, if more than the appointment fiducial temperature, it is very dark promptly to be judged as TCXO thermalization degree, with the current talking mode switch to other call modes and use athermic power amplifier (PAM), thereby the temperature of TCXO no longer rises, and cools down.
Therefore at this, the fuselage of the mobile communication terminal except the structure of above-mentioned interpolation has and the identical structure of known general mobile communication terminal, is convenient in an embodiment of the present invention illustrate and does not have to illustrate in addition an apparatus structure of above-mentioned terminal.
Below, with reference to Fig. 2 and Fig. 3 the conversion method of above-mentioned control part 202 is described in more detail.
Fig. 2 is the conversion method flow chart of mobile communication terminal of the present invention, and Fig. 3 is the flow chart of other conversion methods of mobile communication terminal of the present invention.
As mentioned above, when starting the gpsOne function at weak electric field, the overheated and TCXO of the power amplifier of terminal inner is by thermalization, and then its frequency stability descends, and the correctness of position calculation descends.
The present invention when the user asks E911 (emergency service), if the user is in the conversation, detects the step S201～S203 (as shown in Figure 2) of the temperature of TCXO, S301～S303 (as shown in Figure 3) by temperature detecting part 201 as shown in Figure 2.
Promptly, control part 202 receives the magnitude of voltage of temperature detecting part output and carries out analog-to-digital conversion (ADC:Analogto Digital Convert), judge the temperature of TCXO with reference to the voltage/thermometer (not shown) of the appointment of having stored, and with the temperature of this TCXO and the fiducial temperature step S204 relatively of preassignment, S304.
Subsequently, if the temperature of above-mentioned TCXO is than the fiducial temperature height of preassignment, the power amplifier (PAM) that this means the use of current talking pattern is overheated, therefore after converting current call mode to other call modes (step S205 or S305), startup gpsOne function (step S206, S306).Certainly,, do not need to change call mode, at the step S206 of present mode startup gpsOne function, S306 if the temperature of TCXO is lower than fiducial temperature.
For example, as shown in Figure 2, if current talking pattern PCS pattern not, just convert to start after the DCN pattern gpsOne function (step S205, S206), as shown in Figure 3, if the current talking pattern is the DCN pattern not, just convert to start after the PCS pattern gpsOne function (step S305, S306).
That is to say, replace overheated power amplifier, the thermalization of cooling off TCXO as far as possible by power amplifier with other call modes.
Then, if the E911 service request finishes, the work of gpsOne function also finishes, just turn back to original call mode (step S207, S307).
More than be exactly with reference to the explanation of accompanying drawing to preferred embodiment of the present invention.At this, term that uses in this specification and claims scope or word can not limited interpretations be common or dictionary on the meaning, should be interpreted as meeting the meaning and the notion of the technology of the present invention thought.
Therefore, the embodiment and the structure shown in the drawings of the record of this specification are a best embodiment of the present invention, can not represent all technological thoughts of the present invention, therefore, be interpreted as except the foregoing description, have various equipollent and variation to replace.
Claims (6)
1. the conversion equipment of a mobile communication terminal is characterized in that comprising: temperature detecting part, measure the temperature of the temperature compensating crystal oscillator that is installed in the mobile communication terminal body; Control part according to the temperature of judging temperature compensating crystal oscillator from the detected temperature information of said temperature test section, and switches to other call modes according to this temperature control from the call mode of carrying out the gpsOne function.
2. the conversion equipment of mobile communication terminal according to claim 1 is characterized in that: above-mentioned control part also has voltage/temperature table of comparisons that the magnitude of voltage that utilizes the said temperature test section to detect calculates the temperature of actual temperature compensated crystal oscillator.
3. the conversion equipment of mobile communication terminal according to claim 1 and 2, it is characterized in that: if more than the fiducial temperature of the temperature of the temperature compensating crystal oscillator of above-mentioned detection than appointment, the current talking mode switch is become other call modes, if below the fiducial temperature, continue to keep the current talking pattern.
4. the conversion method of a mobile communication terminal is characterized in that comprising: when needs utilize the emergency service of mobile communication terminal, and the step of the temperature of the temperature compensating crystal oscillator in the sense terminals; The temperature of the temperature compensating crystal oscillator of more above-mentioned detection and the step of the fiducial temperature of appointment; When the temperature of said temperature compensated crystal oscillator is higher than fiducial temperature, existing call mode is transformed into the step of carrying out the gpsOne function behind other the call mode.
5. the conversion method of mobile communication terminal according to claim 4 is characterized in that also comprising: when the temperature of said temperature compensated crystal oscillator is lower than fiducial temperature, start the step of gpsOne function under the current talking pattern.
6. according to the conversion method of claim 4 or 5 described mobile communication terminals, it is characterized in that also comprising: if the end-of-job of above-mentioned gpsOne function is transformed into the step of original call mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050081358A KR20070025325A (en) | 2005-09-01 | 2005-09-01 | Hand-off apparatus and method for mobile communication device |
| KR1020050081358 | 2005-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1925676A true CN1925676A (en) | 2007-03-07 |
Family
ID=37818071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101037352A Pending CN1925676A (en) | 2005-09-01 | 2006-07-27 | Switching device and method for mobile communication terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20070025325A (en) |
| CN (1) | CN1925676A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186227A (en) * | 2011-04-19 | 2011-09-14 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and switching method thereof |
| CN101483448B (en) * | 2009-02-13 | 2013-02-27 | 华为终端有限公司 | Method and apparatus for enhancing reliability of oscillator and method for implementing oscillator |
| CN108834187A (en) * | 2018-06-12 | 2018-11-16 | 深圳市沃特沃德股份有限公司 | Mobile terminal and its temperature control method |
| CN116944593A (en) * | 2023-09-21 | 2023-10-27 | 沈阳和研科技股份有限公司 | Dicing precision control method, dicing saw and storage medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4624227B2 (en) * | 2005-09-29 | 2011-02-02 | 京セラ株式会社 | Communication terminal, mobile communication system, and communication control method |
| WO2023017965A1 (en) * | 2021-08-12 | 2023-02-16 | 삼성전자 주식회사 | Electronic device for switching cellular connection or operation mode of cellular connection on basis of state of electronic device, and method for operating electronic device |
-
2005
- 2005-09-01 KR KR1020050081358A patent/KR20070025325A/en not_active Application Discontinuation
-
2006
- 2006-07-27 CN CNA2006101037352A patent/CN1925676A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483448B (en) * | 2009-02-13 | 2013-02-27 | 华为终端有限公司 | Method and apparatus for enhancing reliability of oscillator and method for implementing oscillator |
| CN102186227A (en) * | 2011-04-19 | 2011-09-14 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and switching method thereof |
| CN102186227B (en) * | 2011-04-19 | 2013-10-02 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and switching method thereof |
| CN108834187A (en) * | 2018-06-12 | 2018-11-16 | 深圳市沃特沃德股份有限公司 | Mobile terminal and its temperature control method |
| CN108834187B (en) * | 2018-06-12 | 2021-05-28 | 深圳市沃特沃德股份有限公司 | Mobile terminal and temperature control method thereof |
| CN116944593A (en) * | 2023-09-21 | 2023-10-27 | 沈阳和研科技股份有限公司 | Dicing precision control method, dicing saw and storage medium |
| CN116944593B (en) * | 2023-09-21 | 2023-12-01 | 沈阳和研科技股份有限公司 | Dicing precision control method, dicing saw and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070025325A (en) | 2007-03-08 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |