Method for restoring cell service and terminal capable of restoring cell service

Abstract

Disclosed are a method for restoring cell service and a terminal capable of restoring cell service. The method comprises: when a terminal enters an off-network OOS state and terminates the cell service, obtaining current first geographic location information of the terminal and first time-frequency location information of a cell where the terminal is currently located; enabling a timer to count the running time; when the terminal ends the OOS state, obtaining current second geographic location information of the terminal, stopping the timer and recording the running time counted by the timer; and when it is determined according to the first geographic location information and the second geographic location information that the terminal has not left the cell, restoring the cell service based on the first time-frequency location information and the recorded running time.

Description

Technical Field

[0001] The present disclosure generally relates to a method for restoring cell service and a terminal capable of restoring cell service, and more particularly to a method and a terminal for quickly performing cell synchronization using a timer to restore cell service. Background Art

[0002] Generally, due to the limitation of existing communication technology, when using a mobile terminal to obtain cell service, the mobile terminal often fails to obtain cell service and thus terminates the cell service. When the mobile terminal resumes the cell service from the suspended cell service state, it often needs to search the network again, determine the resident cell based on the search results, and then receive relevant information from the selected cell to re-acquire the cell service. This process often takes a lot of time to search, which is not conducive to energy saving, reduces the performance parameters of the mobile terminal, and also affects the user experience of the mobile terminal.

[0003] Specifically, the above scenario may be a scenario of using a mobile terminal with a dual SIM dual standby (DSDS) mode. Since the function of the DSDS mode is implemented by the mobile terminal manufacturer, and the current 3GPP protocol does not define the operation of the DSDS mode. Figure 1 As shown, in a case where a first user identity module (SIM) card (SUB#1) is on a call while a second SIM card (SUB#2) is idle, when a user uses SUB#1 of a mobile terminal with DSDS mode to make a call, SUB#2 of the mobile terminal will terminate the network connection and enter and remain in an off-network (OOS) state. Although SUB#2 is in a power-saving OOS state during the SUB#1 call, when SUB#1 ends the call, regardless of whether the mobile terminal is in a static mode with a different location or even if the mobile terminal is still in the cell where SUB#1 started the call, SUB#2 has to re-search the network to synchronize information related to the cell service. Therefore, the prior art has at least the following disadvantages: SUB#2 searching the network will cause unnecessary power consumption, such as severe power consumption when searching the network; SUB#2 re-searching the cell will cause a delay in restoring the cell service, such as during Figure 1 In the process, restoring the cell service will cause a time delay of Y. Figure 2 The value of the time delay Y for each radio access technology (RAT) when restoring cell service in the prior art is shown.

[0004] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made and no assertion has been made as to whether any of the above contents may be applicable as prior art with respect to the present disclosure. Summary of the invention

[0005] Technical issues

[0006] Embodiments of the present disclosure provide a method and a terminal for restoring cell service to at least solve the above problems and / or disadvantages, and provide at least the advantages described below.

[0007] Technical Solution

[0008] According to an embodiment of the present disclosure, a method for restoring cell service may include: when a terminal enters an off-network OOS state and terminates the cell service, obtaining the terminal's current first geographic location information and the first time-frequency location information of the cell where the terminal is currently located; enabling a timer to count the running time; when the terminal ends the OOS state, obtaining the terminal's current second geographic location information, stopping the timer and recording the running time counted by the timer; when it is determined based on the first geographic location information and the second geographic location information that the terminal has not left the cell, restoring the cell service based on the first time-frequency location information and the recorded running time.

[0009] In the method according to an embodiment of the present disclosure, the step of restoring cell service based on the first time-frequency position information and the recorded operating duration may include: determining the current second time-frequency position information of the terminal based on the first time-frequency position information and the recorded operating duration; and restoring the cell service by using the determined second time-frequency position information.

[0010] In the method according to an embodiment of the present disclosure, the step of determining that the terminal has not left the cell based on the first geographic location information and the second geographic location information may include: when the distance between the first geographic location determined according to the first geographic location information and the second geographic location determined according to the second geographic location information is less than or equal to the cell radius of the cell where the terminal is located when the terminal enters the OOS state, determining that the terminal has not left the cell.

[0011] In the method according to an embodiment of the present disclosure, the terminal may be a terminal that uses a first SIM card and a second SIM card to obtain cell service, wherein, in response to the first SIM card of the terminal entering a call state, the second SIM card of the terminal enters an OOS state and acquires first geographic location information and first time-frequency location information, and in response to the first SIM card of the terminal ending the call state, the second SIM of the terminal ends the OOS state and restores the cell service of the second SIM card.

[0012] In the method according to an embodiment of the present disclosure, the method may further include: when the terminal enters the OOS state, saving synchronization information for restoring cell service, wherein the step of restoring cell service by using the determined second time-frequency position information includes: receiving the synchronization information at the time-frequency position determined according to the second time-frequency position information, and restoring the cell service by using the synchronization information.

[0013] In the method according to the embodiment of the present disclosure, the synchronization information may include: frequency information of the cell, time slot synchronization information and system broadcast information.

[0014] According to an embodiment of the present disclosure, a terminal capable of restoring cell service may include: a timer; an acquisition unit, configured to: when the terminal enters an off-network OOS state and terminates the cell service, acquire the terminal's current first geographic location information and the first time-frequency location information of the cell where the terminal is currently located, and enable the timer to count the running time; and when the terminal ends the OOS state, acquire the terminal's current second geographic location information, stop the timer and record the running time counted by the timer; and a processing unit, configured to: when it is determined that the terminal has not left the cell based on the first geographic location information and the second geographic location information, restore the cell service based on the first time-frequency location information and the recorded running time.

[0015] In a terminal according to an embodiment of the present disclosure, the processing unit can restore cell service based on the first time-frequency position information and the recorded operating duration through the following operations: determine the current second time-frequency position information of the terminal based on the first time-frequency position information and the recorded operating duration; and restore cell service by using the determined second time-frequency position information.

[0016] In a terminal according to an embodiment of the present disclosure, when the distance between a first geographical location determined according to the first geographical location information and a second geographical location determined according to the second geographical location information is less than or equal to the cell radius of the cell where the terminal is located when it enters the OOS state, the processing unit may determine that the terminal has not left the cell.

[0017] In a terminal according to an embodiment of the present disclosure, the terminal may be a terminal that uses a first SIM card and a second SIM card to obtain a cell service, wherein, in response to the first SIM card of the terminal entering a call state, the processing unit causes the second SIM card of the terminal to enter an OOS state, and the acquisition unit acquires the first geographic location information and the first time-frequency location information, and in response to the first SIM card of the terminal ending the call state, the processing unit causes the second SIM of the terminal to end the OOS state, and the processing unit restores the cell service of the second SIM card.

[0018] In a terminal according to an embodiment of the present disclosure, when the terminal enters an OOS state, the processing unit may save synchronization information for restoring cell service, wherein the processing unit uses the determined second time-frequency position information to restore the cell service through the following operations: receiving the synchronization information at a time-frequency position determined according to the second time-frequency position information, and restoring the cell service by using the synchronization information.

[0019] In a terminal according to an embodiment of the present disclosure, the synchronization information may include: frequency information, time slot synchronization information and system broadcast information of the cell. According to an embodiment of the present disclosure, an electronic device may include: at least one processor; at least one memory storing computer executable instructions, wherein the computer executable instructions, when executed by the at least one processor, prompt the at least one processor to execute the above method for restoring cell service.

[0020] According to an embodiment of the present disclosure, a computer-readable storage medium, when instructions in the computer-readable storage medium are executed by at least one processor, prompts the at least one processor to execute the above method for restoring cell service.

[0021] Other aspects, advantages, and salient features of the present disclosure will become apparent to those skilled in the art from the following detailed description of various embodiments of the present disclosure disclosed in conjunction with the accompanying drawings.

[0022] Technical Effects

[0023] The method and terminal for restoring cell services according to the embodiments of the present disclosure can retain the advantages of reducing time and energy consumption when the network is idle, and can solve the disadvantage of severe power consumption when the mobile terminal searches for the network when restoring cell services in static mode. Compared with the prior art, the method and terminal of the present disclosure can also restore the current cell service more quickly, saving time delay Y.

[0024] In addition, various features and advantages directly or indirectly understood through the present disclosure may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a diagram showing a process of suspending and resuming cell service of SUB#2 of a mobile terminal having DSDS mode in the prior art;

[0027] Figure 2 The value of the time delay Y when restoring cell service in the prior art is shown;

[0028] Figure 3 is a diagram illustrating a method for restoring cell service according to an embodiment of the present disclosure;

[0029] Figure 4 is a diagram illustrating a process of suspending and resuming cell service of a second SIM card (SUB#2) of a mobile terminal having a DSDS mode according to an embodiment of the present disclosure;

[0030] Figure 5 is a diagram showing time-frequency position information according to an embodiment of the present disclosure;

[0031] Figure 6 is a diagram illustrating a process of a second SIM card (SUB#2) of a mobile terminal having a DSDS mode for synchronization information according to an embodiment of the present disclosure;

[0032] Figure 7 is a diagram illustrating a process of suspending and resuming cell service of a second SIM card (SUB#2) of a mobile terminal having a DSDS mode according to an embodiment of the present disclosure;

[0033] Figure 8 is a diagram illustrating processing for different states of a timer TimerX according to an embodiment of the present disclosure; and

[0034] Fig. 9 is a diagram illustrating a terminal capable of restoring a cell service according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] Hereinafter, various embodiments of the present disclosure may be described with reference to the accompanying drawings.

[0036] Embodiments and the terms used with respect to embodiments are not intended to limit the technology described herein to specific embodiments, and should be understood to include various modifications, equivalents and / or alternatives of the embodiments. As used herein, each description in the descriptions such as "A or B", "at least one of A or B", "at least one of A and B", "A, B or C", "at least one of A, B and C", and "at least one of A, B or C" may include all possible combinations of items listed together with a corresponding one of the multiple descriptions. As used herein, terms such as "first" and "second" may be used to simply distinguish a corresponding item from another item, and do not limit the item in other aspects (e.g., importance or order).

[0037] In the following, reference will be made to Figures 3 to 8 A method for restoring cell service according to an embodiment of the present disclosure is described.

[0038] Figure 3 is a diagram illustrating a method for restoring cell service according to an embodiment of the present disclosure. Figure 4 FIG. 1 is a diagram showing a process of suspending and resuming cell service of a second SIM card (SUB#2) of a mobile terminal with DSDS mode according to an embodiment of the present disclosure. Figure 4 A mobile terminal with DSDS mode is described in detail as an example Figure 3 Schematic diagram of a method for restoring cell service.

[0039] Reference Figure 3 In the method for restoring cell service according to an embodiment, in step S301, when the terminal enters the OOS state and terminates the cell service, the current first geographic location information of the terminal and the first time-frequency location information of the cell where the terminal is currently located can be obtained. In step S302, a timer can be enabled to count the running time. According to an embodiment, the first geographic location information can be obtained through at least one of a global navigation satellite system (GNSS), an observable time difference of arrival positioning (OTDOA), a long-term evolution technology positioning protocol (LPP) and / or a secure user plane positioning (SUPL).

[0040] According to the embodiment, referring to Figure 4 When SUB#1 starts a CS call, SUB#1 sends a CS_CALL_START_IND signal indicating that SUB#1 starts a CS call to an interface module in the mobile terminal; in response to receiving the CS_CALL_START_IND signal, the interface module may send a SUB#2_SUSPEND_IND signal indicating that SUB#2 terminates the cell service to SUB#2. SUB#2 may enter the OOS state in response to receiving the SUB#2_SUSPEND_IND signal, and then may perform the following cell service termination process: store the synchronization information including frequency point information, time slot synchronization information, system broadcast information, etc. of the current cell and the first time-frequency location information (RF 1 ,SF 1 ), and obtain and record the current first geographic location Y of the mobile terminal 1 ; Suspend the protocol stack and start timer TimerX to count the running time.

[0041] Return to reference Figure 3 In step S303, when the terminal ends the OOS state, the current second geographic location information of the terminal can be obtained, the timer is stopped and the running time counted by the timer is recorded. According to an embodiment, the second geographic location information can be obtained through at least one of a global navigation satellite system (GNSS), an observable time difference of arrival positioning (OTDOA), a long term evolution positioning protocol (LPP) and / or a secure user plane positioning (SUPL).

[0042] According to the embodiment, referring to Figure 4When SUB#1 ends the CS call, SUB#1 sends a CS_CALL_END_IND signal indicating that SUB#1 ends the CS call to the interface module. In response to receiving the CS_CALL_END_IND signal, the interface module may send a SUB#2_RESUME_IND signal indicating that SUB#2 resumes the cell service to SUB#2. SUB#2 may end the OOS state in response to receiving the SUB#2_RESUME_IND signal, and then may perform the following process of resuming the cell service: stop the timer TimerX and record the running time L of the timer TimerX x , and obtain and record the current second geographical location Y of the mobile terminal 2 .

[0043] Return to reference Figure 3 In step S304, when it is determined according to the first geographic location information and the second geographic location information that the terminal has not left the cell, the cell service may be restored based on the first time-frequency location information and the recorded operating time.

[0044] According to an embodiment, the step of determining that the terminal has not left the cell according to the first geographic location information and the second geographic location information may include: when the distance between the first geographic location determined according to the first geographic location information and the second geographic location determined according to the second geographic location information is less than or equal to the cell radius of the cell where the terminal is located when entering the OOS state, determining that the terminal has not left the cell. According to an embodiment, the step of restoring the cell service based on the first time-frequency location information and the recorded operation time may include: determining the current second time-frequency location information of the terminal based on the first time-frequency location information and the recorded operation time; and restoring the cell service by using the determined second time-frequency location information.

[0045] The method for restoring cell service according to an embodiment may further include: when the terminal enters the OOS state, saving synchronization information for restoring cell service. The step of restoring cell service by using the determined second time-frequency position information may include: receiving synchronization information at the time-frequency position determined according to the second time-frequency position information, and restoring cell service by using the synchronization information. The synchronization information may include frequency point information, time slot synchronization information and / or system broadcast information of the cell.

[0046] Reference Figure 4 , when the second geographical location Y 2 With the first geographical location Y 1 When the distance between them is less than or equal to the cell radius R of the cell when SUB#2 enters the OOS state, SUB#2 restores the protocol stack based on the first time-frequency position information (RF 1 ,SF 1 ) and runtime L xCalculate the current second time-frequency position information (RF 2 ,SF 2 ), and based on the second time-frequency position information (RF 2 ,SF 2 ) receives synchronization information, thereby quickly staying in the previous cell and restoring cell service.

[0047] The following will refer to Figure 5 Taking receiving RAT frequency division duplex long term evolution (FDD LTE) cell system information as an example, the process of determining the second time-frequency position information is described in detail. Figure 5 is a diagram illustrating time-frequency position information according to an embodiment of the present disclosure.

[0048] According to the above embodiment of the present disclosure, when the terminal or SUB#2 of the terminal enters the OOS state, in addition to obtaining the current first geographical location information of the terminal, the first time-frequency location information (RF 1 ,SF 1 ), when the OOS state ends, record the running time of the timer L x Since the time-frequency position of the received system information in the same cell is unchanged according to a predetermined rule, the first time-frequency position information (RF 1 ,SF 1 ) and runtime L x Calculate the second time-frequency position information (RF 2 ,SF 2 ), for example, the second time-frequency position information (RF 2 ,SF 2 ):

[0049] RF 2 =((L X +SF 1 ) / 10+RF 1 )%1024

[0050] SF 2 =(L X +SF 1 )%10

[0051] Among them, RF 1 Indicates the first time-frequency position information (RF 1 ,SF 1 ) wireless frame number, SF 1 Indicates the first time-frequency position information (RF 1 ,SF 1 ) subframe number, RF 2 Indicates the second time-frequency position information (RF2 ,SF 2 ) wireless frame number, SF 2 Indicates the second time-frequency position information (RF 2 ,SF 2 )’s subframe number.

[0052] Reference Figure 5 In the system information MIB, it is assumed that the first time-frequency position information (RF 1 ,SF 1 ) of the wireless frame number RF 1 is 4, the first time-frequency position information (RF 1 ,SF 1 ) of the subframe number SF 1 is 3, and the running time recorded by timer TimerX is L x is 12262ms, the second time-frequency position information (RF 2 ,SF 2 ) 2 6, SF 2 is 5. Synchronization information including frequency point information of the cell, time slot synchronization information and / or system broadcast information may be received at the time-frequency position indicated by the second time-frequency position information.

[0053] pass Figure 5 The method shown in can restore the cell service based on the first time-frequency location information and the recorded operation time. Figure 6 The processing of synchronization information is described in detail.

[0054] Figure 6 2 is a diagram illustrating a process of a second SIM card (SUB#2) of a mobile terminal with a DSDS mode for synchronization information according to an embodiment of the present disclosure. Figure 6 , SUB#2 can be in OOS state during SUB#1's call. When SUB#1 ends the call, it decodes the primary synchronization signal (PSS) / secondary synchronization signal (SSS) to obtain the cell ID / downlink synchronization (DL Sync) signal, and then decodes the MIB / system information block (SIB) to quickly restore the cell service.

[0055] Figure 7 is a diagram illustrating a process of suspending and resuming cell service of a second SIM card (SUB#2) of a mobile terminal having a DSDS mode according to an embodiment of the present disclosure.

[0056] Reference Figure 7When the first SIM card (SUB#1) of the terminal starts a call, the timer TimerX can be started and the SUB#2 protocol stack can be suspended, and when SUB#1 ends the call, the timer TimerX can be stopped and the SUB#2 protocol stack can be resumed, and the cell service is resumed. Compared with the time delay of resuming cell service in the prior art (for example, Figure 2 Compared with the time delay Y) and power consumption in the above method, the time delay X for resuming cell service according to an embodiment of the present disclosure may be smaller and consume less power.

[0057] Return to reference Figure 4 According to an embodiment, when it is determined that the terminal has left the cell according to the first geographic location information and the second geographic location information, a cell search may be performed and a new cell to reside in may be selected, and cell service may be obtained from the new cell. Figure 4 , when the second geographical location Y 2 With the first geographical location Y 1 When the distance between them is greater than the cell radius R of the cell when SUB#2 enters the OOS state, SUB#2 restores the protocol stack and triggers a cell search process and selects a suitable cell to camp on the new cell.

[0058] According to the above embodiment, the terminal may be a terminal (for example, a mobile terminal with a DSDS mode) that uses a first SIM card and a second SIM card to obtain cell service, wherein, in response to the first SIM card of the terminal entering a call state, the second SIM card of the terminal enters an OOS state and obtains first geographic location information and first time-frequency location information, and in response to the first SIM card of the terminal ending the call state, the second SIM of the terminal ends the OOS state and resumes the cell service of the second SIM card.

[0059] The following will refer to Figure 8 The definitions of different states of the timer TimerX according to an embodiment of the present disclosure are described. Figure 8 is a diagram illustrating processing for different states of a timer TimerX according to an embodiment of the present disclosure.

[0060] Reference Figure 8 According to the embodiment, when the timer TimerX is started, the running time of the timer TimerX begins to be counted. Figure 4 As shown in , when a call of SUB#1 of a mobile terminal in DSDS mode starts, SUB#2 enters an OOS state, starts a timer TimerX and records the current first geographic location information of the mobile terminal.

[0061] When the timer TimerX stops, the timing is stopped and the running time of the timer TimerX is recorded for use in restoring the cell service. Figure 4As shown in , when SUB#1 ends the call and the timer TimerX is running, the timer TimerX is stopped and the running time of the timer TimerX is recorded, and the current second geographical location information of the mobile terminal is recorded.

[0062] In addition, the duration of the timer TimerX is set to be infinite so that the timer TimerX is always in a non-overflow state.

[0063] Fig. 9 is a diagram illustrating a terminal capable of restoring a cell service according to an embodiment of the present disclosure.

[0064] Reference Fig. 9 According to an embodiment, a terminal 900 capable of restoring a cell service may include a timer 901 , an acquisition unit 902 , and a processing unit 903 .

[0065] Specifically, according to the embodiment, the acquisition unit 902 can be configured to: when the terminal 900 enters the offline OOS state and terminates the cell service, obtain the current first geographic location information of the terminal 900 and the first time-frequency location information of the cell where the terminal 900 is currently located, and enable the timer 901 to count the running time; and when the terminal 900 ends the OOS state, obtain the current second geographic location information of the terminal 900, stop the timer 901 and record the running time counted by the timer 901.

[0066] Specifically, the processing unit 903 according to the embodiment may be configured to: when it is determined according to the first geographic location information and the second geographic location information that the terminal 900 has not left the cell, restore the cell service based on the first time-frequency location information and the recorded operating time.

[0067] Specifically, the processing unit 903 can restore the cell service based on the first time-frequency position information and the recorded operating duration through the following operations: determine the current second time-frequency position information of the terminal 900 based on the first time-frequency position information and the recorded operating duration; and restore the cell service by using the determined second time-frequency position information.

[0068] When the distance between the first geographic location determined according to the first geographic location information and the second geographic location determined according to the second geographic location information is less than or equal to the cell radius of the cell where the terminal is located when entering the OOS state, the processing unit 903 may determine that the terminal 900 has not left the cell.

[0069] The terminal 900 may be a terminal that uses a first SIM card and a second SIM card to obtain cell service, wherein, in response to the first SIM card of the terminal 900 entering a call state, the processing unit 903 may enable the second SIM card of the terminal 900 to enter an OOS state, and the acquisition unit 902 may acquire the first geographic location information and the first time-frequency location information, and in response to the first SIM card of the terminal 900 ending the call state, the processing unit 903 may enable the second SIM of the terminal 900 to end the OOS state, and the processing unit 903 may restore the cell service of the second SIM card.

[0070] When the terminal 900 enters the OOS state, the processing unit 903 may save synchronization information for restoring the cell service, wherein the processing unit 903 may restore the cell service by using the determined second time-frequency position information through the following operations: receiving synchronization information at a time-frequency position determined according to the second time-frequency position information, and restoring the cell service by using the synchronization information. The synchronization information may include: frequency point information of the cell, time slot synchronization information and / or system broadcast information.

[0071] The acquisition unit 902 may acquire the first geographic location information or the second geographic location information through at least one of a global navigation satellite system (GNSS), observable time difference of arrival (OTDOA), a long term evolution positioning protocol (LPP) and / or a secure user plane positioning (SUPL).

[0072] The processing unit 903 may also be configured to: when it is determined according to the first geographic location information and the second geographic location information that the terminal has left the cell, perform a cell search and select a new cell to reside in, and obtain cell service from the new cell.

[0073] In addition, various features and advantages understood directly or indirectly through the disclosure may be provided.

[0074] Some of the above-described embodiments of the present disclosure may be implemented in hardware, firmware, or by executing software or computer code that may be stored in a recording medium (such as a CD ROM, a digital versatile disk (DVD), a tape, a RAM, a floppy disk, a hard disk, or a magneto-optical disk), or by executing computer code that was originally stored on a remote recording medium or a non-transitory machine-readable medium downloaded via a network and will be stored on a local recording medium, so that the methods described herein may be presented via such software stored on a recording medium or stored in programmable or dedicated hardware (such as an ASIC or FPGA) using a general-purpose computer or a dedicated processor. As will be understood in the art, a computer, processor, microprocessor controller, or programmable hardware includes a memory component (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code, wherein the software or computer code, when accessed and executed by the computer, processor, or hardware, implements the processing methods described herein.

[0075] While the present disclosure has been shown and described with reference to various disclosed embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.

Claims

1. A method for restoring cell service, comprising: When the terminal enters the offline OOS state and terminates the cell service, obtaining the current first geographical location information of the terminal and the first time-frequency location information of the cell where the terminal is currently located; Enable the timer to count the running time; When the terminal ends the OOS state, obtain the current second geographical location information of the terminal, stop the timer and record the running time measured by the timer; When it is determined according to the first geographic location information and the second geographic location information that the terminal has not left the cell, the cell service is restored based on the first time-frequency location information and the recorded operation time.

2. The method of claim 1, wherein: The step of restoring the cell service based on the first time-frequency location information and the recorded operation duration includes: Determine the current second time-frequency position information of the terminal based on the first time-frequency position information and the recorded running time; and The cell service is restored by using the determined second time-frequency location information.

3. The method of claim 1, wherein: The step of determining that the terminal has not left the cell according to the first geographical location information and the second geographical location information includes: When the distance between the first geographical location determined according to the first geographical location information and the second geographical location determined according to the second geographical location information is less than or equal to the cell radius of the cell where the terminal is located when entering the OOS state, it is determined that the terminal has not left the cell.

4. The method of claim 2, wherein: The terminal is a terminal that uses a first user identity module SIM card and a second SIM card to obtain cell services, In response to the first SIM card of the terminal entering a call state, the second SIM card of the terminal enters an OOS state and obtains the first geographic location information and the first time-frequency location information, and In response to the first SIM card of the terminal ending the call state, the second SIM card of the terminal ends the OOS state and resumes the cell service of the second SIM card.

5. The method of claim 2, further comprising: When the terminal enters the OOS state, the synchronization information used to restore the cell service is saved. The step of restoring the cell service by using the determined second time-frequency position information includes: receiving the synchronization information at the time-frequency position determined according to the second time-frequency position information, and restoring the cell service by using the synchronization information.

6. The method of claim 5, wherein: The synchronization information includes: frequency information of the cell, time slot synchronization information and system broadcast information.

7. A terminal capable of restoring cell service, comprising: Timer; The acquisition unit is configured as follows: When the terminal enters the OOS state and stops the cell service, obtain the current first geographical location information of the terminal and the first time-frequency location information of the cell where the terminal is currently located, and enable the timer to count the running time, and When the terminal ends the OOS state, obtain the current second geographical location information of the terminal, stop the timer and record the running time measured by the timer; as well as The processing unit is configured to: when it is determined according to the first geographic location information and the second geographic location information that the terminal has not left the cell, restore the cell service based on the first time-frequency location information and the recorded operation time.

8. The terminal according to claim 7, wherein: The processing unit restores the cell service based on the first time-frequency location information and the recorded operation duration by performing the following operations: Determine the current second time-frequency position information of the terminal based on the first time-frequency position information and the recorded running time; and The cell service is restored by using the determined second time-frequency location information.

9. The terminal according to claim 7, wherein: When the distance between the first geographical location determined according to the first geographical location information and the second geographical location determined according to the second geographical location information is less than or equal to the cell radius of the cell where the terminal is located when entering the OOS state, the processing unit determines that the terminal has not left the cell.

10. The terminal according to claim 8, wherein: The terminal is a terminal that uses a first SIM card and a second SIM card to obtain cell services, In response to the first SIM card of the terminal entering a call state, the processing unit causes the second SIM card of the terminal to enter an OOS state, and the acquiring unit acquires the first geographic location information and the first time-frequency location information, and In response to the first SIM card of the terminal ending the call state, the processing unit causes the second SIM card of the terminal to end the OOS state, and the processing unit restores the cell service of the second SIM card.

11. The terminal according to claim 8, wherein: When the terminal enters the OOS state, the processing unit saves synchronization information for restoring cell service. The processing unit uses the determined second time-frequency position information to restore the cell service by the following operations: receiving the synchronization information at the time-frequency position determined according to the second time-frequency position information, and restoring the cell service by using the synchronization information.

12. The terminal according to claim 11, wherein: The synchronization information includes: frequency information of the cell, time slot synchronization information and system broadcast information.

13. An electronic device comprising: at least one processor; at least one memory storing computer executable instructions, Wherein, when the computer executable instructions are executed by the at least one processor, the at least one processor is prompted to execute the method for restoring cell service as claimed in any one of claims 1 to 6.

14. A computer-readable storage medium, characterized in that: When the instructions in the computer-readable storage medium are executed by at least one processor, the at least one processor is prompted to perform the method for restoring cell service as claimed in any one of claims 1 to 6.

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