TW201902256A - Ping pong reselection suppression method and mobile terminal - Google Patents

Abstract

A suppression method of Ping-Pong reselection for a mobile station, comprising: when the mobile station is in a first mobile state, enabling a first Ping-Pong reselection scheme; enabling a first virtual reselection scheme; determining whether the mobile station exits from the first mobile state and enters into a second mobile state according to at least a first measurement result received by the mobile station and at least a first Ping-Pong reselection rule of the first mobile state; and when it is determined that the mobile station fails to exit from the first mobile state and enter into the second mobile state, performing at least a first virtual reselection judgment according to the at least one first measurement result and the first virtual reselection rule, and recording information associated with a first virtual reselection state when performing the first virtual reselection judgment operation; and determining whether the mobile station exits from the first mobile state and enters into the normal mobile state according to the information associated with the first virtual reselection state.

Description

Ping-pong reselection suppression method and mobile terminal

The present invention relates to a mobile terminal and a method for operating the same, and more particularly, to a method and a mobile terminal that can effectively suppress Ping-Pong reselection of the mobile terminal.

After the mobile terminal (MS) successfully camps on, it will monitor the signal quality and signal strength of the serving cell and neighbor cell (s) to select a better cell to Provide services. If the neighboring cell meets the cell reselection rule, the mobile terminal triggers the cell reselection. Taking 4G inter-frequency high-priority cell reselection as an example, when the following normal reselection rules are met, the mobile terminal will trigger 4G inter-frequency high-priority cell reselection:-When System Information (SI) SystemInformationBlockType3 is configured Parameter threshServingLowQ, when the 4G high-priority neighbor cell meets Squal> ThreshX, HighQ within the TreselectionRAT time, and the mobile terminal can successfully reside in the target cell for more than 1 second, or-when the parameter threshServingLowQ is not configured in SystemInformationBlockType3, when 4G high priority The neighboring cell satisfies Srxlev> ThreshX, HighP within TreselectionRAT time, and the mobile terminal can successfully camp on the target cell for more than 1 second.

From the current market after-sales feedback data analysis, when the mobile terminal is at the border of the servo cell, customer complaints about its call quality problems and high power consumption problems are significantly higher, and these problems are mainly due to the ping-pong reselection of the mobile terminal. Caused. When the network signals of the servo cell and the surrounding cells are unstable, mobile terminals at the boundary of the servo cell may frequently perform cell reselection, thereby causing a "ping-pong reselection" effect.

In order to suppress the occurrence of ping-pong reselection, the current traditional ping-pong reselection suppression method mainly increases the cell reselection threshold. For example, if the action state (speed) of a mobile terminal is higher, the frequency of reselection faced by the mobile terminal is higher, and the cell reselection algorithm used by the mobile terminal will be stricter. For example, when the mobile terminal is in a high mobility state, the frequency of ping-pong reselection faced by the mobile terminal is the highest, then the reselection threshold of the cell reselection algorithm used by the mobile terminal at this time. Set to highest. When the mobile terminal is in a medium mobility state, the frequency of cell reselection that the mobile terminal is facing is the next highest, then the cell reselection algorithm used by the mobile terminal at this time is The reselection threshold is set to the next highest. Taking 4G inter-frequency high-priority cell ping-pong reselection in high-speed action as an example, the mobile terminal will trigger 4G inter-frequency high-priority cell re-selection only when the following ping-pong re-selection rules are met:-When SystemInformationBlockType3 The parameter threshServingLowQ is configured, when the 4G high-priority neighbor cell meets Squal> Thresh _{X, HighQ} + Thresh _Offset within the Treselection _RAT time, and the mobile terminal can successfully stay in the target cell for more than 1 second, or-when the system information SystemInformationBlockType3 is not configured The parameter threshServingLowQ, when the 4G high-priority neighboring cell satisfies Srxlev> Thresh _{X, HighP} + Thresh _Offset within the Treselection _RAT time, and the mobile terminal can successfully camp on the target cell for more than 1 second.

However, the existing ping-pong reselection suppression algorithm does not have an effective solution for how to exit the ping-pong reselection suppression mechanism.

In view of this, one object of the present invention is to provide at least one ping-pong reselection suppression method and a mobile terminal to solve the above problems.

A method for suppressing ping-pong reselection according to an embodiment of the present invention is applicable to a mobile terminal. The method for suppressing ping-pong reselection includes: when the mobile terminal is in a first action state, enabling a first ping-pong reselection mechanism; Selection mechanism; judging whether the mobile terminal exits the first action state and enters the second action state according to at least one first measurement result received by the mobile terminal and at least one first ping-pong reselection rule of the first action state; And when it is determined that the mobile terminal has not exited the first action state and entered the second action state, at least one first is executed according to the at least one first measurement result and at least one first virtual reselection rule of the first action state Virtual reselection judgment, and records information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and determines whether the mobile terminal exits the first based on the information about the first virtual reselection state. Action state and enter normal action state.

According to an embodiment of the present invention, a computer-readable storage medium stores a program used in combination with a mobile terminal, and the program, when executed by a processor of the mobile terminal, implements the steps of the ping-pong reselection suppression method described in the above embodiment.

A mobile terminal according to another embodiment of the present invention includes: a processor that, when executing a program stored in a memory, performs the following operations: when the mobile terminal is in a first action state, turning on a first ping-pong reselection mechanism and turning on A first virtual reselection mechanism; determining whether the mobile terminal exits the first action state and enters the first action state according to at least a first measurement result received by the mobile terminal and at least a first ping-pong reselection rule of the first action state Two action states; and when it is determined that the mobile terminal has not exited the first action state and entered the second action state, it is executed according to the at least one first measurement result and at least one first virtual reselection rule of the first action state At least one first virtual reselection judgment, and records information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and determines whether the mobile terminal is based on the information about the first virtual reselection state. Exit the first action state and enter the normal action state.

According to an embodiment of the present invention, at least one first virtual reselection judgment is performed, and information about a first virtual reselection state when the first virtual reselection judgment operation is performed is recorded, and according to the first virtual reselection state, The step of determining whether the mobile terminal exits the first action state and enters the normal action state further includes: using a timer to count the number of virtual reselections of the mobile terminal within the first predetermined time; Compare the first threshold; and when the number of virtual reselections is not less than the first threshold, restart the timer and set the number of virtual reselections to 0, and when the number of virtual reselections is less than the first threshold , It is determined that the mobile terminal exits the first action state and enters the normal action state.

In summary, the present invention allows a mobile terminal to run a virtual reselection mechanism when entering the ping pong reselection suppression mechanism and determine a strategy of how to exit the ping pong reselection suppression mechanism according to the virtual reselection mechanism, so as to achieve efficient suppression of the The ping-pong reselection of a mobile terminal can enhance the adaptability of the mobile terminal to the network environment, reduce the probability of dropped calls and missed paging of the mobile terminal, thereby improving the user experience.

Certain terms are used in the description and the scope of patent applications to refer to specific elements. Those of ordinary skill in the art should understand that hardware manufacturers may use different terms to refer to the same component. The scope of this specification and the patent application does not use the difference in names as a way to distinguish components, but rather uses the difference in functions of components as a criterion for distinguishing components. The terms "including" and "including" mentioned throughout the description and the scope of the patent application are open-ended terms and should therefore be interpreted as "including but not limited to." "Approximately" means that within the acceptable error range, those with ordinary knowledge in the field can solve the technical problem within a certain error range, and basically achieve the technical effect. In addition, the term "coupled" includes any direct and indirect electrical connection means. Therefore, if a first device is described as being coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. Device. The term "connected" includes any direct and indirect, wired and wireless means of connection. The following is a preferred way to implement the present invention. The purpose is to explain the spirit of the present invention and not to limit the scope of protection of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

In the method for suppressing ping-pong reselection of a mobile terminal according to various embodiments of the present invention, a virtual reselection judging mechanism is provided. When the mobile terminal enters the ping-pong reselection suppression state in a high-speed / medium-speed action state, virtual reselection is enabled The mechanism is to enter the virtual reselection state, and under the virtual reselection state, determine whether to exit / suspend the current ping-pong reselection suppression state through the virtual reselection rule that judges the signal quality of the current servo cell and / or neighboring cells. .

Please refer to FIG. 1. FIG. 1 is a simplified block diagram of a mobile station 100 according to an embodiment of the present invention, which can be used to suppress ping-pong reselection. The mobile terminal 100 may be a mobile device such as a smart phone. As shown in FIG. 1, the mobile terminal 100 includes: a processor 110 and a virtual state timer 120. The virtual state timer 120 can be used to time the virtual reselection state of the mobile terminal, and is used to calculate the The number of virtual reselections that have occurred within a predetermined time in the current action state.

When the mobile terminal 100 is in a first action state (for example, a medium-speed action state), the processor 110 enables the first ping-pong reselection mechanism and the first virtual reselection mechanism; and when the mobile terminal 100 receives the first measurement result S1, The processor 110 is configured to determine whether the mobile terminal 100 exits the first action state and enters a second action state (for example, a high-speed action state) according to the first measurement result S1 and at least one first ping-pong reselection rule of the first action state. . The first measurement result S1 is a measurement result obtained by the mobile terminal performing a cell measurement operation (for example, performing a measurement operation on a current servo cell and a neighboring cell). Wherein, when the processor 110 determines that the mobile terminal 100 has not exited the first action state and entered the second action state, the processor 110 is configured to use the first measurement result S1 and at least one first virtual reselection of the first action state. The rule performs at least one first virtual reselection judgment, and records information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and determines an action according to the information about the first virtual reselection state. Whether the terminal 100 exits the first action state. According to an embodiment of the present invention, the information about the first virtual reselection state includes information about the number of virtual reselections that have occurred in the mobile terminal in the medium-speed action state within a predetermined time, such as the duration of the timer, the occurrence of the Number of virtual reselections, etc. Then, when the processor 110 determines that the mobile terminal 100 exits the first action state and closes the first ping-pong reselection mechanism, the mobile terminal 100 enters a normal mobility state and uses the processor 110 to turn off the first virtual state. Reselection mechanism. The first action state may be a medium-speed action state, and the second action state may be a high-speed action state. The normal action state is that within the unit time Ta (Ta is a natural number), the mobile terminal 100 has cell reselection less than M1 times between two or more cells; the medium-speed action state is that the unit time Tb (Tb Is a natural number), the mobile terminal 100 has cell reselection more than M1 times and less than M2 times between 2 or more cells; the high-speed action state is within a unit time Tc (Tc is a natural number), The mobile terminal 100 between two or more cells has more than M2 cell reselections in the medium-speed action state, high-speed action state, and normal action state. The definition is familiar to those with ordinary knowledge in the field and is concise. For the sake of brevity, I won't go into details here. The unit times Ta, Tb, and Tc according to various embodiments of the present invention may be determined to be the same or different values according to actual design requirements, and the present invention is not limited thereto.

In addition, the processor 110 performs the at least one first virtual reselection judgment according to the first measurement result S1 and the at least one first virtual reselection rule of the first action state, and records the execution of the first virtual reselection. The information about the first virtual reselection state during the selection judgment operation, and determining whether the mobile terminal 100 exits the first action state based on the information about the first virtual reselection state may further include: turning on the mobile terminal 100 The virtual state timer 120 and set the number of virtual reselections to 0; use the virtual state timer 120 to count the number of virtual reselections within a first predetermined time threshold T1; determine whether the number of virtual reselections is less than the first reselection Times threshold N1; and when the number of virtual reselections is not less than the threshold N1 of first reselections, re-starting the virtual state timer 120 and setting the number of virtual reselections to 0, and when the number of virtual reselections is less than When the threshold value N1 of the first reselection times is reached, the processor 110 determines that the mobile terminal 100 exits the first action state. Next, the step of using the virtual state timer 120 to count the number of virtual reselections within the first predetermined time threshold T1 may further include: receiving a first measurement result S1; using the processor 110 according to the first measurement result S1 and the The at least one first ping pong reselection rule in the first action state determines whether a real ping pong reselection is required; when it is determined that a real ping pong reselection is required, performing a cell reselection and increasing the number of virtual reselections by one, and When it is judged that no real ping-pong reselection is required, it is further judged whether the signal quality of the current servo cell of the mobile terminal 100 is lower than the signal quality threshold Y1 of the first servo cell within the first predetermined time threshold T1, and whether Whether the signal quality of the neighboring cell is higher than the first neighboring cell signal quality threshold X1 within the first predetermined time threshold T1; and when determining the signal quality of the current servo cell of the mobile terminal 100 at the first predetermined time The threshold value T1 is lower than the signal quality threshold value Y1 of the first servo cell, and the signal quality of the neighboring cell of the mobile terminal 100 is within When the threshold value T1 of the first predetermined time is higher than the signal quality threshold X1 of the first neighboring cell, the number of virtual reselections is increased by one, and when the signal quality of the current servo cell of the mobile terminal 100 is judged at The first predetermined time threshold value T1 is not lower than the first servo cell signal quality threshold value Y1, or the signal quality of the neighboring cell of the mobile terminal 100 is not higher than the first predetermined time threshold value T1. When the signal quality threshold X1 of a neighboring cell is not changed, the number of virtual reselections is not changed and the above steps are repeated.

The first reselection threshold value N1, the first neighboring cell signal quality threshold value X1, and the first servo cell signal quality threshold value Y1 mentioned in the virtual reselection rule may be based on the servo cell. Dynamically adjust the signal strength, signal quality, and ping-pong reselection status of neighboring cells. For example, in the unit time Tm (Tm is a natural number), if the number of real or virtual reselections occurs more, the threshold value N1 of the first reselection number can be set smaller, or the first phase The signal quality threshold X1 of the neighboring cell can be set higher, or the signal quality threshold Y1 of the first servo cell can be set smaller; and if the signal strength (that is, signal quality) of the servo cell is better, or the neighboring cell is better The worse the signal strength (that is, the signal quality), the smaller the first reselection times threshold value N1 can be set, or the first neighboring cell signal quality threshold value X1 can be set higher, or the first servo The cell signal quality threshold Y1 can be set smaller. Please note that the unit time Tm according to various embodiments of the present invention may be set according to actual design requirements, and the present invention is not limited thereto. In addition, the mobile terminal 100 can maintain the information of the servo cell and the neighboring cell in the virtual state, and the servo cell in the virtual state can be different from the real servo cell. In addition, please note here that the above-mentioned embodiments are merely examples of the present invention, but not limiting conditions of the present invention.

In addition, when it is determined that the mobile terminal 100 exits the first action state and enters the second action state, the method of the present invention may further include: when the mobile terminal 100 is in the second action state, using the processor 110 to start the second state Ping-pong reselection mechanism; use processor 110 to enable second virtual reselection mechanism; mobile terminal 100 receives at least one second measurement result S2, where the second measurement result S2 is a cell measurement operation performed by the mobile terminal (for example, on the current servo cell) And measurement results obtained by performing measurement operations with neighboring cells); using the processor 110 to perform at least one second virtual reselection determination according to the second measurement result S2 and at least one second virtual reselection rule of the second action state, and Record information about the second virtual reselection state when the second virtual reselection determination operation is performed, and determine whether the mobile terminal 100 exits the second action state according to the information about the second virtual reselection state. According to an embodiment of the present invention, the information about the second virtual reselection state includes information about the number of virtual reselections that have occurred in the mobile terminal in a high-speed action state within a predetermined time, such as a timer duration, a virtual occurrence Number of reselections, etc.

The processor 110 performs the at least one second virtual reselection judgment according to the second measurement result S2 and the at least one second virtual reselection rule of the second action state, and records the execution of the second virtual reselection judgment. The information about the second virtual reselection state during operation, and the step of determining whether the mobile terminal 100 exits the second action state according to the information about the second virtual reselection state may further include: enabling the virtual of the mobile terminal 100 State timer 120 and set the number of virtual reselections to 0; use the virtual state timer 120 to count the number of virtual reselections within a second predetermined time threshold T2; determine whether the number of virtual reselections is less than the second reselection threshold N2; and when the number of virtual reselections is not less than the threshold value N2 of the second reselections, restart the virtual state timer 120 and set the number of virtual reselections to 0, and when the number of virtual reselections is less than the second When the number of reselection thresholds N2, the processor 110 determines that the mobile terminal 100 exits the second action state.

Next, the step of using the virtual state timer 120 to count the number of virtual reselections within the second predetermined time threshold T2 may further include: receiving a second measurement result S2; using the processor 110 according to the second measurement result S2 and the The at least one second ping-pong reselection rule in the second action state determines whether a real ping-pong reselection is required; when it is determined that a real ping-pong reselection is required, performing a cell reselection and increasing the number of virtual reselections by one, and when When it is judged that the real ping-pong reselection is not required, it is further judged whether the signal quality of the current servo cell of the mobile terminal 100 is lower than the signal quality threshold Y2 of the second servo cell within the second predetermined time threshold T2, and the mobile terminal 100 Whether the signal quality of the neighboring cell is higher than the second neighboring cell signal quality threshold X2 within the second predetermined time threshold T2; and when determining the signal quality of the current servo cell of the mobile terminal 100 at the second predetermined time The time threshold T2 is lower than the signal quality threshold Y2 of the second servo cell, and the signal quality of the neighboring cell of the mobile terminal 100 When the second predetermined time threshold T2 is higher than the second neighboring cell signal quality threshold X2, the number of virtual reselections is increased by one, and when the signal quality of the current servo cell of the mobile terminal 100 is judged Within the second predetermined time threshold T2 is not lower than the second servo cell signal quality threshold Y2, or the signal quality of the neighboring cell of the mobile terminal 100 is not higher than the second predetermined time threshold T2 When the signal quality threshold X2 of the second neighboring cell is not changed, the number of virtual reselections is not changed and the foregoing steps are repeated. In addition, please note here that the above-mentioned embodiments are merely examples of the present invention, but not limiting conditions of the present invention.

Similarly, the second reselection threshold threshold value N2, the second neighboring cell signal quality threshold value X2, and the second servo cell signal quality threshold value Y2 mentioned in the above virtual reselection rule can be based on the servo The signal strength, signal quality, and ping-pong reselection of the cell and neighboring cells are dynamically adjusted. For example, within a unit time Tn (Tn is a natural number), if more real or virtual reselections occur, the second reselection threshold N2 can be set smaller, or the second The signal quality threshold X2 of the neighboring cell can be set higher, or the signal quality threshold Y2 of the second servo cell can be set smaller; and if the signal strength (that is, signal quality) of the servo cell is better, or the The worse the cell signal strength (that is, the signal quality), the smaller the second reselection times threshold N2 can be set, or the second neighboring cell signal quality threshold X2 can be set higher, or the second The smaller the signal quality threshold Y2 of the servo cell can be set. Please note that the unit time Tn according to various embodiments of the present invention may be set according to actual design requirements, and the present invention is not limited thereto. In addition, the mobile terminal 200 can maintain the information of the servo cell and the neighboring cell in the virtual state, and the servo cell in the virtual state can be different from the real servo cell. In addition, please note here that the above-mentioned embodiments are merely examples of the present invention, but not limiting conditions of the present invention.

In addition, when the processor 110 determines that the mobile terminal 100 exits the second action state and closes the second ping-pong reselection mechanism, the processor 110 may be used to determine whether the mobile terminal 100 enters the normal action state; when the processor 110 determines the mobile terminal When the 100 enters the normal operation state, the processor 110 is used to close the second virtual reselection mechanism and the mobile terminal 100 enters the normal operation state, and when the processor 110 determines that the mobile terminal 100 has not entered the normal operation state, the processor 110 is used. 110 Turn off the second virtual reselection mechanism and the mobile terminal 100 enters the first action state.

Next, the step of using the processor 110 to determine whether the mobile terminal 100 enters the normal operation state may further include: when the number of virtual reselections is less than the second reselection threshold N2 and greater than the third reselection threshold N3 The processor 110 determines that the mobile terminal 100 has not entered the normal operation state, and when the number of virtual reselections is less than the third reselection threshold threshold N3, the processor 110 determines that the mobile terminal 100 enters the normal operation state.

In addition, the mobile terminal 100 may use the same virtual reselection algorithm under high-speed action state and medium-speed action state, but its virtual reselection parameters are different. For example, the second predetermined time threshold T2 is greater than or equal to the first A predetermined time threshold T1; the second reselection times threshold N2 is less than or equal to the first reselection times threshold N1; the second neighboring cell signal quality threshold X2 is greater than or equal to the first neighboring cell signal quality threshold Value X1; and the signal quality threshold value Y2 of the second servo cell is less than or equal to the signal quality threshold value Y1 of the first servo cell.

For example, when the above-mentioned first action state is a medium-speed action state and the second action state is a high-speed action state, please refer to FIG. 2, which illustrates the operation of the mobile terminal 100 according to the above. The first part of the flowchart of an embodiment of the method for suppressing ping-pong reselection of a mobile terminal according to the present invention. If the same result can be generally obtained, the steps in the process do not necessarily need to be as shown in FIG. 2. It is not necessary to execute in the order shown, that is, other steps can be inserted between these steps. The method of the present invention includes the following steps:

Step 200: Start.

Step 210: When the mobile terminal is in a medium-speed action state, the processor of the mobile terminal is used to enable the first ping-pong reselection mechanism.

Step 220: The processor enables a first virtual reselection mechanism.

Step 230: The mobile terminal acquires at least a first measurement result of a received signal in a medium-speed action state. The first measurement result may be a measurement result of the signal quality and / or signal strength of the signal received by the mobile terminal. For example, in a GSM cell, the first measurement result may be a received signal strength indicator (RSSI), etc .; in LTE Cell, the first measurement result may be a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ), etc., which is not limited in the present invention.

Step 240: The processor determines whether the mobile terminal exits the medium-speed action state and enters the high-speed action state according to the at least one first measurement result and the at least one first ping-pong reselection rule of the medium-speed action state. The mobile terminal exits the medium-speed action state and enters the high-speed action state, and the flow proceeds to step 510 in FIG. 5 to continue processing; and if the processor determines that the mobile terminal has not exited the medium-speed action state and enters the high-speed action state In the action state, step 250 is performed. The first ping-pong re-selection rule mentioned here is a traditional ping-pong re-selection suppression method, which is mainly implemented by increasing the cell re-selection threshold. The specific implementation method is described in the background introduction.

Step 250: The processor performs at least one first virtual reselection judgment according to the at least one first measurement result, and records information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and according to the Information about the first virtual reselection state determines whether the mobile terminal exits the medium-speed action state. According to an embodiment of the present invention, the information about the first virtual reselection state includes information about the number of virtual reselections that have occurred in the mobile terminal in the medium-speed action state within a predetermined time, such as the duration of the timer, the occurrence of the Number of virtual reselections, etc. If the processor determines that the mobile terminal has not exited the medium-speed action state, it returns to step 230; and if the processor determines that the mobile terminal has exited the medium-speed action state, step 260 is performed. For the first virtual reselection judgment method mentioned in step 250, please refer to FIG. 3.

Step 260: The mobile terminal enters a normal operation state.

Step 270: The processor disables the first virtual reselection mechanism.

Step 280: End.

FIG. 3 is a flowchart of a first virtual reselection determination method according to an embodiment of the present invention. As shown in FIG. 3, the flow of the first virtual reselection determination method described in step 250 in FIG. 2 may be Includes the following steps:

Step 300: Start.

Step 310: The mobile terminal enables a first virtual reselection mechanism.

Step 320: Start the virtual state timer of the mobile terminal and set the number of virtual reselections to zero.

Step 330: Use the virtual state timer to count the number of virtual reselections within the first predetermined time threshold T1.

Step 340: determine whether the first predetermined time threshold T1 is exceeded; if it is determined that the first predetermined time threshold T1 has not been exceeded, return to step 330; and if it is determined that the first predetermined time threshold T1 has been exceeded, proceed to step 350.

Step 350: determine whether the number of virtual reselections is less than the first reselection threshold threshold N1; if it is determined that the number of virtual reselections is not less than the first reselection threshold threshold N1, return to step 320; and if the number of virtual reselections is determined If it is less than the threshold N1 of the first reselection times, step 360 is performed.

Step 360: The processor determines that the mobile terminal exits the medium-speed action state.

Step 370: End.

Please refer to FIG. 4. Step 330 in FIG. 3 may further include the following steps:

Step 400: Start.

Step 410: Receive at least one first measurement result.

Step 420: The processor determines whether a real ping-pong reselection is needed according to the at least one first measurement result and at least one first ping-pong reselection rule of the medium-speed action state; wherein if the processor determines that the real ping-pong reselection is not required, Then proceed to step 430; and if the processor determines that a real ping-pong reselection is required, proceed to step 440.

Step 430: The processor determines whether the signal quality of the current servo cell of the mobile terminal is lower than the first servo cell signal quality threshold Y1 within the first predetermined time threshold T1, and whether the signal quality of the neighboring cell of the mobile terminal is within the first predetermined time threshold. Within a predetermined time threshold T1 is higher than the first neighboring cell signal quality threshold X1; if the processor judges that the signal quality of the current servo cell of the mobile terminal is not lower than the first servo within the first predetermined time threshold T1 When the cell signal quality threshold Y1 or the signal quality of the neighboring cell of the mobile terminal is not higher than the first neighboring cell signal quality threshold X1 within the first predetermined time threshold T1, then go to step 410 and continue to receive new If the processor determines that the signal quality of the current servo cell of the mobile terminal is lower than the first servo cell signal quality threshold Y1 within the first predetermined time threshold T1, and the signal quality of the neighboring cell of the mobile terminal is within When the first predetermined time threshold T1 is higher than the first neighboring cell signal quality threshold X1, step 450 is performed.

Step 440: Perform cell reselection.

Step 450: Increase the number of virtual reselections by one.

Step 460: End.

The first reselection threshold value N1, the first neighboring cell signal quality threshold value X1, and the first servo cell signal quality threshold value Y1 mentioned in the virtual reselection rule may be based on the servo cell. Dynamically adjust the signal strength, signal quality, and ping-pong reselection status of neighboring cells. For example, within a unit time T, if more real or virtual reselections occur, the threshold of the first reselection number N1 can be set smaller, or the signal quality threshold of the first neighboring cell can be smaller. The value X1 can be set higher, or the first servo cell signal quality threshold Y1 can be set smaller; and if the signal strength of the servo cell (ie, the signal quality) is better, or the signal strength of the neighboring cell (ie, The worse the signal quality), the smaller the first reselection threshold N1 can be set, or the higher the signal quality threshold X1 of the first neighboring cell can be set, or the higher the signal quality threshold of the first servo cell is. The smaller Y1 can be set. In addition, the mobile terminal 100 can maintain the information of the servo cell and the neighboring cell in the virtual state, and the servo cell in the virtual state can be different from the real servo cell. In addition, please note here that the above-mentioned embodiments are merely examples of the present invention, but not limiting conditions of the present invention.

Next, please refer to FIG. 5. FIG. 5 shows the second part of the flowchart of an embodiment of the method for suppressing ping-pong reselection of a mobile terminal according to the operation mode of the mobile terminal 100 described above. If the same result can be obtained in general, the steps in the process do not necessarily need to be executed in the order shown in Figure 5, nor do they need to be continuous, that is, other steps can be inserted between these steps . As shown in FIG. 5, the ping-pong reselection method according to an embodiment of the present invention includes the following steps:

Step 510: When the mobile terminal is in a high-speed action state, use a processor to enable a second ping-pong reselection mechanism.

Step 520: Use the processor to enable the second virtual reselection mechanism.

Step 530: The mobile terminal acquires at least a second measurement result of the received signal in the high-speed action state. The second measurement result may be a measurement result of the signal quality and / or signal strength of the signal received by the mobile terminal. For example, in a GSM cell, the second measurement result may be a received signal strength indicator (RSSI), etc .; in LTE Cell, the second measurement result may be a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ), etc., which is not limited in the present invention.

Step 540: The processor performs at least one second virtual reselection judgment according to the at least one second measurement result, and records information about the second virtual reselection state when the second virtual reselection judgment operation is performed, and according to Information about the second virtual reselection state determines whether the mobile terminal exits the high-speed action state. According to an embodiment of the present invention, the information about the second virtual reselection state includes information about the number of virtual reselections that have occurred in the mobile terminal in a high-speed action state within a predetermined time, such as a timer duration, and a virtual occurrence. Number of reselections, etc. If the processor determines that the mobile terminal exits the high-speed action state, step 550 is performed; and if the processor determines that the mobile terminal has not exited the high-speed action state, then returns to step 530.

Step 550: The processor determines whether the mobile terminal enters the normal operation state; if the processor determines that the mobile terminal has not entered the normal operation state, step 570 is performed; and if the processor determines that the mobile terminal has entered the normal operation state, step 560 is performed. For the process of determining whether the mobile terminal enters the normal operation state in step 550, please refer to FIG. 6.

Step 560: The processor closes the second virtual reselection mechanism and the mobile terminal enters a normal operation state.

Step 570: The processor closes the second virtual reselection mechanism and the mobile terminal enters a medium-speed action state.

Step 580: End.

FIG. 6 is a flowchart of determining whether a mobile terminal enters a normal operating state in step 550 according to an embodiment of the present invention. As shown in FIG. 6, step 550 in FIG. 5 determines whether the mobile terminal enters a normal operating state. The process can include the following steps:

Step 600: Start.

Step 610: The mobile terminal enables a second virtual reselection mechanism.

Step 620: Start the virtual state timer of the mobile terminal and set the number of virtual reselections to zero.

Step 630: Use the virtual state timer to count the number of virtual reselections within the second predetermined time threshold T2. Please refer to Figure 7 for the process of counting the number of virtual reselections.

Step 640: determine whether the second predetermined time threshold T2 is exceeded; if it is determined that the second predetermined time threshold T2 has not been exceeded, then return to step 630; and if it is determined that the second predetermined time threshold T2 has been exceeded, proceed to step 650.

Step 650: determine whether the number of virtual reselections is less than the second reselection threshold threshold N2; if it is determined that the number of virtual reselections is not less than the second reselection threshold threshold N2, return to step 620; and if the number of virtual reselections is determined If it is less than the second re-selection threshold N2, step 660 is performed.

Step 660: The processor determines that the mobile terminal exits the high-speed action state.

Step 670: End.

In addition, the step of using the processor to determine whether the mobile terminal enters a normal action state may further include: when determining that the number of virtual reselections is less than the second reselection threshold N2 and greater than the third reselection threshold N3, the processor It is determined that the mobile terminal does not enter the normal operation state after exiting the high-speed operation state (ie, step 570 is performed), and when the number of virtual reselections is less than the third reselection threshold N3, the processor determines that the mobile terminal has exited the high-speed operation state Enter a normal state of operation (ie, proceed to step 560).

FIG. 7 is a flowchart of counting the number of virtual reselections according to an embodiment of the present invention. As shown in FIG. 7, the process of counting the number of virtual reselections according to step 630 in FIG. 6 may include the following steps:

Step 700: Start.

Step 710: Receive at least one second measurement result.

Step 720: The processor determines whether a real ping-pong reselection is needed according to the at least one second measurement result and the at least one second ping-pong reselection rule in a high-speed action state; if the processor determines that a real ping-pong reselection is not required, then Go to step 730; and if the processor determines that a real ping-pong reselection is needed, go to step 740. The second ping-pong re-selection rule mentioned here is the traditional ping-pong re-selection suppression method, which is mainly implemented by increasing the cell re-selection threshold. The specific implementation method is described in the background introduction.

Step 730: The processor determines whether the signal quality of the current servo cell of the mobile terminal is lower than the second servo cell signal quality threshold Y2 within the second predetermined time threshold T2, and whether the signal quality of the neighboring cell of the mobile terminal is within the second predetermined time threshold. The second predetermined time threshold T2 is higher than the second neighboring cell signal quality threshold X2; if the processor determines that the signal quality of the current servo cell of the mobile terminal is not lower than the second servo within the second predetermined time threshold T2 If the cell signal quality threshold Y2, or the signal quality of the neighboring cell of the mobile terminal is not higher than the second neighboring cell signal quality threshold X2 within the second predetermined time threshold T2, then return to step 710; and if the processing is The device determines that the signal quality of the current servo cell of the mobile terminal is lower than the signal quality threshold Y2 of the second servo cell within the first predetermined time threshold T1, and the signal quality of the neighboring cell of the mobile terminal is within the second predetermined time threshold T2. When it is higher than the signal quality threshold X2 of the second neighboring cell, step 750 is performed.

Step 740: Perform cell reselection.

Step 750: Increase the number of virtual reselections by one.

Step 760: End.

The threshold setting in the virtual ping pong reselection rule mentioned in FIG. 7 may be the same as that in FIG. 3, or based on the actual threshold value in the virtual ping pong reselection rule mentioned in FIG. 3 Design requirements are adjusted.

Similarly, the second reselection threshold threshold value N2, the second neighboring cell signal quality threshold value X2, and the second servo cell signal quality threshold value Y2 mentioned in the above virtual reselection rule can be based on the servo cell and phase. The signal strength, signal quality, and ping-pong reselection of neighboring cells are dynamically adjusted. For example, in a unit time, if the number of real or virtual reselections occurs more, the second reselection threshold N2 can be set smaller, or the second neighboring cell signal quality threshold X2 Can be set higher, or the signal quality threshold Y2 of the second servo cell can be set smaller; and if the signal strength (i.e. signal quality) of the servo cell is better, or the signal strength (i.e. signal quality) of the neighboring cell is better ), The lower the second reselection threshold N2 can be set, or the second neighboring cell signal quality threshold X2 can be set higher, or the second servo cell signal quality threshold Y2 is set higher. The smaller the setting can be. In addition, the mobile terminal 200 can maintain the information of the servo cell and the neighboring cell in the virtual state, and the servo cell in the virtual state can be different from the real servo cell. In addition, please note here that the above-mentioned embodiments are merely examples of the present invention, but not limiting conditions of the present invention.

In addition, the mobile terminal 100 may use the same virtual reselection algorithm under high-speed action state and medium-speed action state, but its virtual reselection parameters are different. For example, the second predetermined time threshold T2 is greater than or equal to the first A predetermined time threshold T1; the second reselection times threshold N2 is less than or equal to the first reselection times threshold N1; the second neighboring cell signal quality threshold X2 is greater than or equal to the first neighboring cell signal quality threshold Value X1; and the signal quality threshold value Y2 of the second servo cell is less than or equal to the signal quality threshold value Y1 of the first servo cell.

In summary, the present invention allows a mobile terminal to run a virtual reselection mechanism when it enters the ping pong reselection mechanism and determine a strategy for exiting the ping pong reselection mechanism according to the virtual reselection mechanism, so as to achieve effective suppression of the mobile terminal. Ping-pong reselection can enhance the adaptability of the mobile terminal to the network environment, reduce the probability of the mobile terminal's dropped calls and missed paging, thereby improving the user experience.

Please note that under the premise that approximately the same effect can be achieved, one or more steps included in the ping-pong reselection suppression method according to various embodiments of the present invention can be split, combined, omitted or sequentially swapped according to actual design requirements The present invention is not limited to this.

The above embodiments of the present invention may be implemented as hardware, software code, or a combination thereof. According to an embodiment of the present invention, the one or more steps of the above method and operation may be implemented by a processor executing corresponding code. The processor may be a processing unit, a digital signal process (DSP), a microprocessor, or a field-programmable device for executing code to implement the function corresponding to one or more steps included in the method or operation. Field Programmable Gate Array (FPGA) or any special circuit that can implement the above functions. These processors may be configured in accordance with the present invention to perform specific tasks via execution of machine-readable software code or firmware code that defines specific methods embodied by the present invention. Software code or firmware code can be developed using different programming languages and different formats or types. Software code can also be adapted to different target platforms. However, the different code formats, types, languages, and other ways of configuring software codes to perform tasks in accordance with the present invention do not depart from the spirit and scope of the present invention.

According to various embodiments of the present invention, a computer-readable storage medium may also be provided for storing at least one program instruction or program code. After the at least one program instruction or program code is loaded into the communication device according to the foregoing embodiments of the present invention, a processor of the communication device executes the at least one program instruction or program code to execute each of the above embodiments. One or more steps in the provided method.

According to an embodiment of the present invention, when at least one program instruction or program code in a computer-readable storage medium is loaded and executed, the processor in the mobile terminal 100 shown in FIG. 1 may execute the at least one program instruction or program. Code to perform a function corresponding to one or more steps of a method or operation provided by the foregoing multiple embodiments. The computer-readable recording medium may be implemented as a memory (not shown) accessible to the processor 110 of the mobile terminal 100 in FIG. 1. According to actual design requirements, the memory may be included in the mobile terminal 100. Or it is located outside the mobile terminal 100, and the present invention is not limited thereto. According to various embodiments of the present invention, the computer-readable recording medium may be a Read-Only Memory (ROM), a Random-Access Memory (RAM), or a CD-ROM -ROM), magnetic tape, floppy disk or optical data storage device, etc., the present invention is not limited thereto.

The above description enables those skilled in the art to implement the invention with the specific applications and requirements provided above. Those skilled in the art can understand various variations of the foregoing embodiments, and the basic principles defined herein can be applied to other embodiments. Therefore, the present invention is not limited to the specific embodiments shown and described above, but records the broadest scope consistent with the principles and significant features disclosed herein. In the above detailed description, various specific details may provide a comprehensive understanding of the present invention. However, those having ordinary knowledge in the art can understand how the present invention is implemented.

Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of patent application of the present invention shall fall within the scope of the present invention.

100‧‧‧ mobile terminal

110‧‧‧ processor

120‧‧‧Virtual status timer

S1, S2‧‧‧ measurement results

200 ~ 280, 300 ~ 370, 400 ~ 460, 300 ~ 370, 510 ~ 580, 600 ~ 670, 700 ~ 760‧‧‧ steps

FIG. 1 is a simplified block diagram of a mobile terminal according to an embodiment of the present invention. FIG. 2 shows the first part of a flowchart that summarizes an embodiment of the method for suppressing ping-pong reselection of a mobile terminal according to the operation mode of the mobile terminal described above. FIG. 3 shows steps included in step 250 in FIG. 2. FIG. 4 shows steps included in step 330 in FIG. 3. FIG. 5 shows the second part of the flowchart of an embodiment of the method for suppressing ping-pong reselection of a mobile terminal according to the operation mode of the mobile terminal described above. FIG. 6 shows the steps included in step 550 in FIG. 5. FIG. 7 shows additional steps included in step 630 in FIG. 6.

Claims (10)

A ping pong reselection suppression method is applicable to a mobile terminal. The ping pong reselection suppression method includes: when the mobile terminal is in a first action state, enabling a first ping pong reselection mechanism; enabling a first virtual reselection mechanism; according to the action The at least one first measurement result received by the processor of the terminal and the at least one first ping-pong reselection rule of the first action state to determine whether the mobile terminal exits the first action state and enters the second action state; and when When it is determined that the mobile terminal has not exited the first action state and entered the second action state, at least one first virtual reselection is performed according to the at least one first measurement result and at least one first virtual reselection rule of the first action state. Selection judgment, and records information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and determines whether the mobile terminal exits the first action state based on the information about the first virtual reselection state. And enter normal operation. The method for suppressing ping-pong reselection according to item 1 of the scope of patent application, wherein the information about the first virtual reselection state when the first virtual reselection judgment operation is performed includes: the mobile terminal is in the first action state Information about the number of virtual reselections that occurred during the first predetermined time. The ping-pong reselection suppression method according to item 1 of the scope of patent application, wherein the at least one first virtual reselection judgment is performed, and information about the first virtual reselection state when the first virtual reselection judgment operation is performed is recorded. And determining whether the mobile terminal exits the first action state and enters a normal action state according to the information about the first virtual reselection state includes: starting a virtual state timer of the mobile terminal and setting the number of virtual reselections to 0 ; Using the virtual state timer to count the number of virtual reselections within a first predetermined time; judging whether the number of virtual reselections is less than a threshold value of the first reselection times; and when the number of virtual reselections is not less than the first reselection When the number of times of re-selection is set, the virtual state timer is re-enabled and the number of times of virtual re-selection is set to 0. When the number of times of virtual re-selection is less than the threshold of the first number of re-selections, the processor determines that the mobile terminal exits the A state of action and enters the normal state of action. The ping-pong reselection suppression method according to item 3 of the scope of patent application, wherein the step of using the virtual state timer to count the number of virtual reselections within the first predetermined time includes: receiving the at least one first measurement result; and according to the At least one first measurement result and the at least one first ping-pong reselection rule of the first action state determine whether a real ping-pong re-selection is required; when it is determined that a real ping-pong re-selection is required, perform a cell re-selection and the virtual re-selection The number of selections is increased by one, and when it is determined that the real ping-pong reselection is not required, it is further determined whether the signal quality of the current servo cell of the mobile terminal is lower than the signal quality threshold of the first servo cell within the first predetermined time, And whether the signal quality of the neighboring cell of the mobile terminal is higher than the signal quality threshold of the first neighboring cell within the first predetermined time; and when determining that the signal quality of the current servo cell of the mobile terminal is within the first predetermined time Below the threshold of the signal quality of the first servo cell and the signal quality of the neighboring cell of the mobile terminal within time When the signal quality threshold of the first neighboring cell is higher than the first predetermined time, the number of virtual reselections is increased by one, and when it is determined that the signal quality of the current servo cell of the mobile terminal is within the first When the signal quality threshold of the first servo cell is not lower than the first time, or the signal quality of the neighboring cell of the mobile terminal is not higher than the signal quality threshold of the first neighboring cell within the first predetermined time, The number of virtual reselections is not changed. The ping-pong reselection suppression method according to item 1 of the scope of patent application, wherein when determining that the mobile terminal exits the first action state and enters the second action state, the ping-pong reselection suppression method further includes: when the mobile terminal is in In the second action state, the processor is used to enable a second ping-pong reselection mechanism; to enable a second virtual reselection mechanism; the mobile terminal receives at least one second measurement result; according to the at least one second measurement result and the second At least one second virtual reselection rule of the action state executes at least one second virtual reselection judgment, and records information about the second virtual reselection state when the first virtual reselection judgment operation is performed, and according to the second Information about the virtual reselection state determines whether the mobile terminal exits the second action state. The method for suppressing ping-pong reselection according to item 5 of the scope of patent application, wherein the information about the second virtual reselection state when the second virtual reselection judgment operation is performed includes: the mobile terminal is in the second action state Information about the number of virtual reselections that occurred during the second predetermined time. The method for suppressing ping-pong reselection according to item 5 of the scope of patent application, wherein the at least one second virtual reselection judgment is performed, and the related information of the second virtual reselection state when the second virtual reselection judgment operation is performed is recorded. The information and the step of determining whether the mobile terminal exits the second mobile state according to the information about the second virtual reselection state include: starting a virtual state timer of the mobile terminal and setting the number of virtual reselections to 0; Use the virtual state timer to count the number of virtual reselections within a predetermined time; determine whether the number of virtual reselections is less than a second reselection threshold; and when the number of virtual reselections is not less than the second reselection threshold , Restarting the virtual state timer and setting the number of virtual reselections to 0, and when the number of virtual reselections is less than the second reselection threshold threshold, the processor determines that the mobile terminal exits the second action state. The ping-pong reselection suppression method according to item 7 of the scope of patent application, wherein the step of using the virtual state timer to count the number of virtual reselections within the second predetermined time includes: receiving the at least one second measurement result; and according to the At least one second measurement result and the at least one second ping-pong reselection rule of the second action state determine whether a real ping-pong re-selection is required; when it is determined that a real ping-pong re-selection is required, perform a cell re-selection and the virtual The number of reselections is increased by one, and when it is determined that the real ping-pong reselection is not required, it is further determined whether the signal quality of the current serving cell of the mobile terminal is lower than the signal quality threshold of the second serving cell within the second predetermined time. And whether the signal quality of the neighboring cell of the mobile terminal is higher than the signal quality threshold of the second neighboring cell within the second predetermined time; and when determining that the signal quality of the current servo cell of the mobile terminal is in the second Below the signal quality threshold of the second servo cell and the signal of the neighboring cell of the mobile terminal within a predetermined time When the quality is higher than the signal quality threshold of the second neighboring cell within the second predetermined time, the number of virtual reselections is increased by one, and when it is judged that the signal quality of the current servo cell of the mobile terminal is within the first When the signal quality threshold of the second servo cell is not lower than the second predetermined time, or the signal quality of the neighboring cell of the mobile terminal is not higher than the signal quality threshold of the second neighboring cell within the second predetermined time , The number of virtual reselections is not changed. A mobile terminal includes a processor that performs the following operations when executing a program stored in a memory: when the mobile terminal is in a first action state, enabling a first ping-pong reselection mechanism and enabling a first virtual reselection mechanism; Determining whether the mobile terminal exits the first action state and enters the second action state according to at least a first measurement result received by the mobile terminal and at least a first ping-pong reselection rule of the first action state; and when determining When the mobile terminal has not exited the first action state and entered the second action state, at least one first virtual reselection is performed according to the at least one first measurement result and at least one first virtual reselection rule of the first action state. Determine and record information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and determine whether the mobile terminal exits the first action state based on the information about the first virtual reselection state, and Enter normal operation. The mobile terminal according to item 9 of the scope of patent application, wherein at least one first virtual reselection judgment is performed, and information about the first virtual reselection state when the first virtual reselection judgment operation is performed, and according to the The information about the first virtual reselection state determines whether the mobile terminal exits the first action state and enters the normal action state. The method further includes: using a timer to count the number of virtual reselections of the mobile terminal within the first predetermined time; Comparing the number of virtual reselections with a first threshold; and when the number of virtual reselections is not less than the first threshold, restarting the timer and setting the number of virtual reselections to 0, and when the number of virtual reselections is When it is less than the first threshold value, it is determined that the mobile terminal exits the first action state and enters the normal action state.