WO2007045145A1

WO2007045145A1 - Call method for implementing dual standby in dual-mode mobile terminal

Info

Publication number: WO2007045145A1
Application number: PCT/CN2006/002274
Authority: WO
Inventors: Qiong Cheng; Zhenyu Zhang; Jianqiang Ma
Original assignee: Zte Corporation
Priority date: 2005-10-21
Filing date: 2006-09-04
Publication date: 2007-04-26
Also published as: CN100589667C; CN1953578A

Abstract

A call method for implementing dual standby in a dual-mode mobile terminal, wherein the dual-mode mobile terminal is a dual-mode mobile terminal operating under both GSM and PHS, and the method comprises: (a) when there is a call in the dual standby state, if the terminal determines that it is a PHS call and the frequency point of the GSM mode is 1800M, then turning off the GSM frequency point of 1800M, Once it is completed successfully, then going to the next step, (b) completing the normal call flow and attempting to switch the standby frequency point of GSM mode to 900M, if failed, then attempting to turn on the GSM frequency point of 1800M again, so as to return to the dual standby mode, if both of above are failed, then turning off the GSM mode and returning to the single standby state of the PHS mode. When the dual-mode mobile terminal is in the dual standby state, if there is a call in either of the modes, the radio frequency affecting the communication quality greatly will be turned off, so as not to interfere with another mode, therefore the call quality could be guaranteed.

Description

Dual-mode mobile terminal implementing dual standby calling method

Technical field

The present invention relates to a global mobile communication system (GSM) and a personal handy phone system (PHS) dual mode mobile terminal, and more particularly to a PHS and GSM dual mode mobile terminal for implementing a dual standby time call. Background technique

"Little Smart, also known as Personal Handy-phone System (PHS) or wireless local telephone system, is a personal wireless access system. PHS mobile phones are as mobile as GSM mobile phones and CDMA mobile phones. Sexuality, and its outstanding feature is that the transmission power is small, the small transmission power also means less radiation damage to the human body, the average power of the call is within 10mW, and the peak power is also in the range of 80mW, which is much smaller than the transmission power of the GSM mobile phone (GSM mobile phone). The peak power is 2W), which is much smaller than the so-called "green mobile phone" CDMA mobile phone (usually 0.2W). It is a true green mobile phone. At the same time, due to the extension and useful supplement of fixed-line telephone, consumption People can enjoy low phone bills. Therefore, PHS has achieved more applications in China and has a certain market share.

However, since PHS has not really realized the function of roaming, many users now have to use both GSM and PHS mobile terminals. At present, dual-mode mobile phones of GSM and PHS are still rare, so carrying two mobile terminals at the same time is not very convenient for users. Therefore, dual-mode mobile phones have a good application basis.

At present, existing PHS mobile terminal devices generally operate at 1900 MHz, while GSM dual-band mobile terminals operate at 900 MHz and 1800 MHz. Therefore, dual-mode phones should also be able to be used in the corresponding frequency bands. After the dual-mode mobile phone is turned on normally, it can have the following three standby states: PHS single standby, GSM single standby, PHS and GSM simultaneous standby (hereinafter referred to as dual standby). In the PHS or GSM single standby mode, the silent mode mobile phone is equivalent to a PHS mobile phone or a GSM mobile phone in the usual sense. In the dual standby mode of GSM and PHS, if the GSM mobile terminal is running at 1800MHz and the PHS mobile terminal is running at 1900MHz, the radio frequency of the two will be interfered in the call state, especially for the PHS mobile terminal. The impact will be greater; the result of the interference There will be bad voices, and even the consequences of not being able to make normal calls.

The same problem exists for other joyful terminals that may interfere with each other. Therefore, existing technologies still have drawbacks that need to be improved and developed. Summary of the invention

The technical problem to be solved by the present invention is to provide a method for a dual-mode mobile terminal to implement a Han standby mode. In a dual standby state of a dual-mode mobile terminal, when one of the systems is in a call, another system does not generate the call. Interference, guarantee the quality of the call.

In order to solve the above technical problem, the present invention provides a method for a dual-mode mobile terminal to implement a Han standby, the dual-mode mobile terminal being a GSM and PHS dual-mode mobile terminal, comprising the following steps:

(a) When there is a call in the standby state, if the terminal determines that it is a PHS call and the standby frequency of the GSM mode is 1800M, the 1800M frequency of GSM is turned off, and the next step is executed after successful;

( b ) Complete the normal call flow and try to switch the standby frequency of GSM mode to 900M. If it is unsuccessful, try to restart GSM 1800M frequency to return to dual standby state. If neither is successful, then close. The GSM system returns to the single standby state of the PHS system.

Further, the above method further includes the following features: in the step (b), sending a signal to enable the 900M frequency point of the GSM to wait for receiving the relevant signal of the GSM network while performing the normal call, and recording the success according to the response signal. No, in the call to clear phase, determine whether the 900M frequency is successful. If successful, return directly to the dual standby state. If it is unsuccessful, re-send the GSM 1800M frequency point that has been turned off.

Further, the foregoing method further includes the following features: in the step (a), if the terminal stops the GSM 1800M frequency point, the terminal ends and returns to the silent standby state; or, the terminal still performs a normal PHS call, After the call ends, return to the dual standby state. '

Further, the foregoing method further includes the following features: the operations related to the GSM frequency point are automatically completed inside the terminal, and are not displayed on the terminal interface.

Further, the above method further includes the following features: During the step () and the step (b), the terminal saves the missed, received or dialed telephone information. Further, the foregoing method further includes the following features: in the step (a), if the terminal determines that it is a GSM call, or is a PHS call but the standby frequency of the GSM mode is 900M, the normal call flow is completed, and then the original call back. Dual standby state.

Further, the foregoing method further includes the following features: In the step (b), when the terminal attempts to re-enable the 1800M frequency point of the GSM, if the response to the radio frequency unsuccessful is received, the terminal tries again until the set transmission is reached. When the number of times of the signal still does not start normally, the system is closed.

In order to solve the above problems, the present invention further provides a call method for implementing a Chinese standby mode for a mobile terminal, wherein the dual mode terminal includes a module of the first system I and the second system II, and in a dual standby state, the system I is The radio frequency at the standby frequency point A will interfere with the call of the system II, and the method includes the following steps:

(a) When there is a call in the dual standby state, if the terminal determines that it is a system II call and the standby frequency of the system I is A, the frequency of the system I is closed, and the next step is executed after successful;

(b) the terminal performs the normal call procedure of system II;

(c) The terminal attempts to re-open the frequency A of the system I. If it succeeds, it returns to the dual standby state. Otherwise, it returns to the single standby state of the system II.

Further, the foregoing method may further have the following features: the system 1 has another frequency point B that does not interfere with the system II call, and in the step (b), the terminal first attempts to set the standby frequency of the system I. Switch to B, if successful, go directly to the dual standby state, end, if not successful, then perform step (c).

The dual-mode mobile terminal provided by the present invention realizes the dual standby calling method. Since the PHS and the GSM two systems are simultaneously standby, if a call occurs, the call system determines whether the 1800M frequency needs to be turned off. Point, so no signal interference occurs, and the quality of the call is guaranteed. The method of the invention not only satisfies the requirement that the user normally uses the PHS to make a call, but also satisfies the requirement that the user normally uses the GSM to make a call, and can realize the two modes of the silent mode mobile phone and the standby mode of the two modes; When it is equivalent to a GSM mobile terminal or PHS Mobile terminal. BRIEF abstract

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in which:

FIG. 1 is a flow chart showing the call processing of the PHS and GSM dual-mode mobile terminals during silent standby according to an embodiment of the present invention. Preferred embodiment of the invention

The following is a detailed description of a specific embodiment of the technical solution of the method of the present invention: A dual-mode mobile terminal of the present invention implements a dual standby calling method, and the method of the present invention does not change the current PHS network and GSM network parameters. The PHS and GSM dual-mode mobile terminals use a method of turning off the radio frequency that causes interference, so that another system can implement the call without interference. According to experiments, the impact of PHS on GSM is relatively small, so the focus on the GSM 1800M frequency interference problem is mainly considered in the dual-mode terminals of GSM and PHS. As shown in Figure 1, the specific implementation includes the following steps:

Step 110: In the dual standby state, the PHS and the GSM dual-mode mobile terminal start one of the system calls, determine the current call system, if it is a PHS call, go to step 130, if it is a GSM call, go to step 120;

The call here may be a call or an incoming call, and the terminal needs to indicate whether the call is a call or an incoming call, but the flow of the present invention can be applied.

Step 120: Normally perform the GSM standard call flow until the call ends, return to the GSM/PHS dual standby state, and end;

Step 130, determining whether the standby frequency point of the current GSM system is 1800M frequency point, if yes, performing step 150, otherwise, performing step 140;

Step 140: Normally perform the PHS standard call flow until the call ends, return to the GSM/PHS silent standby state, and end;

Step 150, the signal is sent to close the GSM system 1800M frequency point, if the shutdown is successful, step 170 is performed, otherwise, step 160 is performed; The upper application module sends a shutdown signal request to turn off the GSM system 1800M frequency. After receiving the request, the RF control module performs related operations. After the operation is completed, the result is returned to the upper application module. If the shutdown is successful, the RF successful response is received. The signal (internal signal), if the shutdown is unsuccessful, will receive a response signal that the RF shutdown is unsuccessful, and according to the response signal, the above judgment can be completed and corresponding processing can be performed.

Step 160, ending the call, returning to the GSM/PHS dual standby state, ending; in another embodiment, allowing the outgoing call when the 1800 Hz radio frequency shutdown is unsuccessful, especially for emergency calls, of course, is not limited to Emergency call. After the call ends, return to the dual standby state. Even if the call is interrupted, the number will be saved in the phone.

Step 170: Turn on the GSM system 900M frequency point to standby to receive the signal of the GSM network, and record the result of the opening (success or failure), and complete the PHS call to be processed when the mobile terminal and the corresponding network need to complete according to the protocol. Signal flow;

In another embodiment, after the 1800M frequency of the GSM system is successfully closed, the normal call flow of the PHS call is continued, and the 900M frequency of the GSM is not enabled. After the PHS call ends, the step 180 is opened, and the call is cleared to the clearing stage. First, it is determined whether the GSM standard 900M frequency has been successfully enabled. If yes, step 200 is performed; if the opening is unsuccessful, step 190 is performed; according to the record of the mobile terminal in step 170, it can be determined whether the GSM standard 900 frequency point has been successfully turned on. Of course, at this time, the network may still be searched at the 900M frequency point, and then according to the search result, it is known whether the opening is successful or not, and then the above processing is performed.

Step 190: Send a signal to enable the GSM system 1800M frequency point that has been turned off. If the number of times the signal is sent is still not started normally, go to step 210. Otherwise, go to step 200. The terminal can send the signal to turn on the radio multiple times. If it receives a response signal that the radio is successfully turned on, it remains in the dual standby state. If you receive a response signal that the RF is unsuccessful, try again, and then turn off the system until the number of times the signal is sent is still not started properly.

Step 200, return to the GSM/PHS dual standby state, and end;

Step 210: Turn off the GSM system, switch to the normal PHS mode of the radio frequency, and wait for the single standby. After switching from dual standby to single standby, the user can only return to the dual standby state after the user is turned off and then turned on (you need to set the power-on state to dual standby in advance) or manually switch.

It can be seen that, after the PHS call is initiated, this embodiment turns off the 1800M frequency point of the GSM that may interfere with the call, and after the shutdown, the 900M frequency point of the GSM is preferentially selected when the GSM 900M frequency point can be started. Standby, use the GSM 1800M frequency point for dual standby when searching for less than 900M frequency. On this basis, you can make some quick response according to the previous frequency band information. If the GSM 900M and 1800M frequencies are not searchable, you can switch to the single standby mode and then periodically search for the GSM network according to a certain algorithm. In addition, all the above-mentioned operations related to the frequency point are automatically performed at the time of calling, and do not need to be displayed in the interface.

In the above process, when the frequency of a certain system is turned on or off, the relevant parameters of the RF switch need to be reset; the relevant parameters of the call need to be set at the beginning or end of the call, and the missed, received or dialed calls are saved according to the situation. information. These operations can be handled in the same way as they are.

In summary, the terminal of the method of the present invention improves the performance of the mobile terminal by changing the frequency of the standby frequency of the GSM and avoiding the frequency of interference with the PHS. It should be understood that those skilled in the art to which the present invention pertains can make corresponding equivalent changes or substitutions according to the technical solutions of the present invention and the concept thereof.

For example, those skilled in the art can understand that the present invention can be extended to apply to all dual-mode terminals that may interfere with each other, the principle is to turn off the frequency of interference (generally when one type of transmission band partially falls on another) Interference occurs when a standard receiving band is used, and another system can perform calls without interference.

For example, the model terminal includes the modules of the system I and the second system II, and in the dual standby state, the radio frequency of the system I at the standby frequency point A interferes with the call of the system II, then there is a call in the dual standby state. When it occurs, if the terminal judges that it is a system II call and the standby frequency of the system I is A, the frequency of the system I is closed, and after successful, the terminal performs the normal call flow of the standard II; then restarts the frequency of the system I. Point A, return to the dual standby state. If the system I has another frequency point B that does not interfere with the system II call, during the call, the terminal first attempts to switch the standby frequency of the system I to B, and if successful, directly returns to the standby state. If it is unsuccessful, try to restart the frequency point A of the system I and return to the dual standby state. If it is not successful, return to the system I. Single standby state.

If there is a frequency point in a certain system that can generate interference and a frequency point that does not cause interference, after turning off the frequency point where the interference occurs, when returning to the dual standby state as much as possible, the standby frequency point is switched to not interfere. Frequency. All such changes or substitutions are intended to fall within the scope of the appended claims.

Industrial applicability

A dual-mode mobile terminal provided by the present invention implements a dual standby calling method, and utilizes existing methods

The protocol for running PHS and GSM network, when the mobile terminal GSM and PHS are simultaneously in standby, when one of the mobile terminals of the standard system has a call event, the method of turning off the radio frequency that has a great influence on the quality of the call makes another The system does not interfere with the call and guarantees the quality of the call. The method of the invention not only satisfies the requirement that the user normally uses the PHS to make a call, but also satisfies the requirement that the user normally uses the GSM to make a call, and can realize the two-mode simultaneous standby of the dual-mode mobile phone and the single standby of the two modes.

Claims

Claim

A method for implementing a silent standby mode by a dual mode mobile terminal, wherein the dual mode mobile terminal is a GSM and PHS dual mode mobile terminal, comprising the following steps:

(a) When there is a call in the dual standby state, if the terminal determines that it is a PHS call and the standby frequency of the GSM mode is 1800M, the 1800M frequency of GSM is turned off, and the next step is executed after successful;

2. The calling method according to claim 1, wherein in the step (b), the normal signal is sent while the signal is sent to the GSM 900M frequency point to receive the relevant signal of the GSM network, and according to The response signal is recorded successfully. In the call to clear phase, it is judged whether the 900M frequency is successful. If it is successful, it returns directly to the dual standby state. If it is unsuccessful, the signal is re-enabled to turn on the GSM 1800M frequency that has been turned off. point.

The calling method according to claim 1, wherein in the step (a), if the 1800 MF frequency of the GSM is unsuccessful, the call is terminated and returned to the Han standby state; or, the terminal still performs A normal PHS call returns to the silent standby state after the call ends.

The calling method according to claim 1, wherein the operations related to the GSM frequency point are automatically completed inside the terminal, and are not displayed on the terminal interface.

The calling method according to claim 1, wherein in the step (a) and the step (b), the terminal saves the missed, received or dialed telephone information.

The calling method according to claim 1, wherein in the step (a), if the terminal determines that it is a GSM call, or is a PHS call but the standby frequency of the GSM mode is 900M, the normal call is completed. The process then returns to the original dual standby state.

The calling method according to claim 1, wherein in the step (b), when the terminal attempts to re-enable the 1800M frequency point of the GSM, if the terminal receives an unsuccessful response to the radio, the terminal tries again. The system is not turned off until the set number of times the signal is sent is still not started normally.

8. A dual mode mobile terminal implementing a calling method for a standby mode, the dual mode terminal comprising a module of the first system I and the second system II, and in a dual standby state, the radio frequency meeting of the system I at the standby frequency point A Interfering with the call of System II, the method includes the following steps:

(a) When there is a call in the standby state, if the terminal determines that it is a system II call and the standby frequency of the system I is A, the frequency of the system I is closed, and the next step is executed after successful;

(b) the terminal performs the normal call procedure of system II;

(c) The terminal attempts to restart the frequency A of the system I. If it succeeds, it returns to the silent standby state. Otherwise, it returns to the single standby state of the system II.

9. The method according to claim 7, wherein the system 1 has another frequency point B that does not interfere with the system II call. In the step (b), the terminal first attempts to set the system I. The standby frequency is switched to B. If successful, return directly to the dual standby state, and end, if not, then perform step (c).