Cell switching method and device, terminal, storage medium and chip

Abstract

The invention relates to a cell switching method and device, a terminal, a storage medium and a chip, and relates to the technical field of communication. Comprising the steps that a second frequency band bound with a first frequency band registered by a first SIM card is determined, and a frequency band combination of the first frequency band and the second frequency band supports a terminal to be in a dual-card bi-pass state; when the terminal is in the dual-card dual-pass state, determining the state of the first SIM card; under the condition that the first SIM card is in the communication state, sending cell information of an alternative cell located on the second frequency band to a base station; the cell information is used for indicating the base station to screen out a target cell in which the terminal resides after cell switching from the alternative cells. By using the cell switching method provided by the invention, when the first SIM card performs the communication service, the second SIM card can be prevented from interrupting the own service accidentally.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a cell switching method, device, terminal, storage medium, and chip. Background Art

[0002] With the development of mobile communication technology, the use of dual-SIM smart terminals has become increasingly common. Currently, dual-SIM smart terminals are divided into two categories: those that support DSDS (Dual SIM Dual Standby) and those that support DSDA (Dual SIM Dual Active). With a dual-SIM dual-standby terminal, if the first SIM (Subscriber Identity Module) is actively using a communication service, such as making a call, the second SIM card will be unable to access the internet or make calls. With a dual-SIM dual active terminal, the first SIM card's active communication service will not affect the second SIM card's normal service, allowing the second SIM card to continue to use data or voice services.

[0003] In related technologies, dual-SIM dual-channel terminals support dual-SIM dual-channel capabilities only in specific frequency band combinations. When the frequency bands used by the first SIM card and the second SIM card belong to a specific frequency band combination, the dual-SIM dual-channel terminal supports the dual-SIM dual-channel capability. When the first SIM card is performing communication services, the second SIM card can perform data services or voice services normally.

[0004] However, when the frequency bands where the first SIM card and / or the second SIM card reside in the dual-SIM dual-active terminal do not belong to a specific frequency band combination, the capability supported by the dual-SIM dual-active terminal is still the dual-SIM dual-standby capability. At this time, when the first SIM card performs communication services, the data service or voice service of the second SIM card will be interrupted. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a cell switching method, device, terminal, storage medium and chip.

[0006] According to a first aspect of an embodiment of the present disclosure, a cell handover method is provided, including:

[0007] Determine a second frequency band bound to a first frequency band registered with a first SIM card, where a frequency band combination of the first frequency band and the second frequency band supports a dual-SIM dual-communication state of the terminal;

[0008] When the terminal is in a dual-SIM dual-connection state, determining the state of the first SIM card;

[0009] When the first SIM card is in a communication state, cell information of a candidate cell located on the second frequency band is sent to a base station; the cell information is used to instruct the base station to screen out a target cell in which the terminal resides after switching cells from the candidate cells, and the frequency band in which the second SIM card of the terminal is located is the frequency band in which the target cell is located.

[0010] Optionally, the candidate cell located on the second frequency band includes a same-frequency cell located on the same frequency band as the second SIM card; and when the first SIM card is in a communication state, sending the cell information of the candidate cell located on the second frequency band to the base station includes:

[0011] When the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a first threshold, the cell information of the intra-frequency cell is sent to the base station.

[0012] Optionally, when the first SIM card is in a communication state, sending the cell information of the candidate cell located on the second frequency band to the base station includes:

[0013] When the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a second threshold and less than a second threshold, the cell information of the candidate cell located in the second frequency band is sent to the base station.

[0014] Optionally, when the first SIM card is in a communication state, sending the cell information of the candidate cell located on the second frequency band to the base station includes:

[0015] When the first SIM card is in a communication state and the signal strength of the second SIM card is less than a second threshold, determining a service being performed by the second SIM card;

[0016] In case that the second SIM card performs a target service, the cell information of the candidate cell located on the second frequency band is sent to the base station.

[0017] Optionally, the method further includes:

[0018] In a case where the second SIM card performs non-target services, the cell information of the neighboring cells of the cell where the terminal is located is sent to the base station.

[0019] Optionally, after sending the cell information of the candidate cell located on the second frequency band to the base station, the method further includes:

[0020] receiving cell information of the target cell returned by the base station;

[0021] In a case where the registered frequency band of the second SIM card is different from the frequency band of the target cell, the frequency band of the second SIM card is registered as the frequency band of the target cell based on the cell information of the target cell.

[0022] Optionally, the method further includes:

[0023] When the first SIM card is in a non-communication state and / or the terminal exits a dual-SIM dual-connection state, the cell information of the neighboring cells of the cell where the terminal is located is reported to the base station.

[0024] According to a second aspect of an embodiment of the present disclosure, a cell switching device is provided, including:

[0025] a frequency band determination module configured to determine a second frequency band bound to a first frequency band registered with a first SMI card, wherein a frequency band combination of the first frequency band and the second frequency band supports a terminal in a dual-card dual-pass state;

[0026] a card status determination module, configured to determine the status of the first SIM card when the terminal is in a dual-SIM dual-connection state;

[0027] a sending module configured to, when the first SIM card is in a communication state, send cell information of a candidate cell located on the second frequency band to a base station; the cell information is used to instruct the base station to screen out a target cell in which the terminal resides after switching cells from the candidate cells, and the frequency band in which the second SIM card of the terminal is located is the frequency band in which the target cell is located.

[0028] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0029] processor;

[0030] a memory for storing processor-executable instructions;

[0031] Wherein, the processor is configured to:

[0032] Execute the steps of the cell switching method provided in the first aspect of the embodiment of the present disclosure.

[0033] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the cell switching method provided in the first aspect of the embodiment of the present disclosure are implemented.

[0034] According to a fifth aspect of an embodiment of the present disclosure, a chip is provided, comprising a processor and an interface; the processor is configured to read instructions to execute the steps of the cell switching method provided in the first aspect of the embodiment of the present disclosure.

[0035] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0036] You can first determine the second frequency band bound to the first frequency band registered with the first SIM card, and after reporting the alternative cell located on the second frequency band to the base station, the base station instructs the terminal to switch to a target cell where the frequency band is also the second frequency band. Then the frequency band registered by the second SIM card is also the second frequency band where the target cell is located. Since the frequency band combination between the second frequency band and the first frequency band can support the terminal in a dual-SIM dual-pass state, after the terminal switches from the current cell with poor signal quality to the target cell with better signal quality, the second frequency band registered by the second SIM card can still support the dual-SIM dual-pass state in combination with the first frequency band, thereby ending the terminal's cyclic behavior of switching back and forth between the dual-SIM dual-pass state and the dual-SIM dual-standby state, so that the terminal always supports dual-SIM dual-pass capabilities.

[0037] First, the second frequency band where the second SIM card is located can be bound to the first frequency band to support the dual-SIM dual-active state. In the dual-SIM dual-active state, even if the first SIM card is in the communication state, the second SIM card can normally perform data and voice services. Second, since the alternative cell measured and reported by the terminal is located on the second frequency band, after the base station instructs the terminal to perform cell switching, the second frequency band of the target cell to which the terminal switches can still be bound to the first frequency band to support the dual-SIM dual-active state. The terminal will not switch back and forth between the dual-SIM dual-active state and the dual-SIM dual-standby state, thereby reducing terminal power consumption.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0040] Figure 1 The figure is a flowchart of a cell switching method according to an exemplary embodiment.

[0041] Figure 2 The figure is a schematic diagram showing an uplink download data icon of a first SIM card and a second SIM card according to an exemplary embodiment.

[0042] Figure 3 The figure is a schematic diagram of a cellular cell according to an exemplary embodiment.

[0043] Figure 4 The diagram is a logic diagram showing a cell handover method according to an exemplary embodiment.

[0044] Figure 5The figure is a block diagram showing a cell switching device according to an exemplary embodiment.

[0045] Figure 6 It is a block diagram of a terminal according to an exemplary embodiment. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0047] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0048] With the development of mobile communication technology, the use of dual-SIM smart terminals has become increasingly popular. Currently, dual-SIM smart terminals are divided into two categories: those that support DSDS (Dual SIM Dual Standby) and those that support DSDA (Dual SIM Dual Active).

[0049] If it is a dual-SIM dual-standby terminal, if the first SIM (Subscriber Identity Module) card is performing communication services such as making calls or sending and receiving text messages, the second SIM card cannot access the Internet or make calls through chat software. It can also be understood that the second SIM card cannot perform data or voice services normally.

[0050] If it is a dual-SIM dual-communication terminal, the first SIM card is performing a call communication service, which will not affect the normal service of the second SIM card. The second SIM card can perform data service or voice service normally.

[0051] In related art, dual-SIM dual-active terminals only support dual-SIM dual-active functionality in specific frequency band combinations. This functionality is only supported when the frequency bands used by the first and second SIM cards belong to this specific frequency band combination. While the first SIM card is performing communication services such as making calls or sending and receiving text messages, the second SIM card can continue to perform network services normally. However, when the frequency bands used by the first and / or second SIM cards in a dual-SIM dual-active terminal do not belong to this specific frequency band combination, the terminal still supports dual-SIM dual-standby functionality. In this case, performing communication services such as making calls or sending and receiving text messages on the first SIM card interrupts the data or voice services on the second SIM card.

[0052] Taking the frequency band combination supporting dual-SIM dual-active status as SA N41+LTE B3 as an example, when the frequency band registered for the first SIM card is LTE B1 and the frequency band registered for the second SIM card is SA N41, the dual-SIM dual-active terminal is normally in the dual-SIM dual-active state. When the frequency band registered for the first SIM card in the dual-SIM dual-active terminal is not LTE B1, and / or the frequency band registered for the second SIM card is not SA N41, the dual-SIM dual-active terminal can actually only support dual-SIM dual-standby capabilities. At this time, the communication service of the first SIM card will still interrupt the data service or voice service of the second SIM card. SA is 5G, and LTE is 4G. SAN41 is a 5G frequency band with a center frequency of around 2.5GHz; LTE B1 is a 4G frequency band with a center frequency of around 1800MHz.

[0053] Among them, the first SIM card is performing a communication service, which causes the data service or voice service of the second SIM card to be terminated. The reason is that the terminal will cyclically execute the following actions 1 and 2, causing the second SIM card to be in a disconnected state or a network-seeking state, making it impossible for the second SIM card to perform data or voice services normally.

[0054] Behavior 1: In the scenario where the terminal's dual SIM cards are in dual-SIM dual-communication mode and the first SIM card is currently using a communication service, the terminal measures and reports an A4 event. The A4 event means that the terminal will continuously measure the signals of the adjacent cells of the current cell where the terminal is located, and report the adjacent cells with better signal strength than the current cell where the terminal is located to the base station, requesting the base station to switch the terminal from the current cell to the adjacent cell with better signal quality; the base station then redirects the second SIM card to the adjacent cell, but when the frequency band of the adjacent cell is not a frequency band in the specific frequency band combination, the frequency band currently registered by the second SIM card will also not belong to the frequency band in the specific frequency band combination. It can also be understood that when the adjacent cell is a different-frequency cell of the current cell where the terminal is stationed, the terminal will exit the dual-SIM dual-communication mode and switch to the dual-SIM dual-standby mode.

[0055] In dual SIM dual standby mode, since the first SIM card is making calls or sending and receiving text messages and other communication services, occupying radio frequency resources (RF resources), the data service or voice service of the second SIM card cannot be used, which is reflected at the user level as follows: Figure 2 The uplink download data icon for the second SIM card disappears, and the data flow of the second SIM card is interrupted. The data service or voice service currently being used by the second SIM card is terminated. Radio frequency resources include wireless spectrum, base stations, antenna systems, wireless transmission equipment, and antenna chips, which are used to assist terminals in performing wireless communication services such as data transmission, voice calls, and SMS transmission.

[0056] For example, frequency band A supported by the first SIM card can form a specific frequency band combination supporting dual-SIM dual-channel state with frequency band B supported by the second SIM card. When the quality of the cell where the terminal is currently located is poor, the frequency band supported by the second SIM card of the terminal will be registered to the frequency band of the adjacent cell with better signal quality. If the frequency band of the adjacent cell is frequency band C, then the frequency band supported by the second SIM card will change from frequency band B to frequency band C, and frequency band C cannot form a specific frequency band combination supporting dual-SIM dual-channel state with frequency band A, so the terminal will exit the dual-SIM dual-channel state and evolve into the dual-SIM dual-standby state. In the dual-SIM dual-standby state, the second SIM card cannot perform audio or data services normally.

[0057] Behavior 2: Since the terminal is a dual-SIM dual-active terminal, when the terminal detects that the dual SIM cards are not in dual-active mode, for example, in dual-SIM dual standby mode, it triggers a DR Search to find a cell that supports the specific frequency band combination and returns the second SIM card to a cell that supports the specific frequency band combination. Since the frequency band of the cell where the terminal was located before the cell handover supports dual-SIM dual-active mode, the terminal will re-handover to the cell where it was previously located to return to dual-SIM dual-active mode.

[0058] For example, continuing the example in behavior 1, since the terminal is in dual-SIM dual-channel state, when the terminal detects that the dual SIM cards are not in dual-SIM dual-channel state, it will search for a cell that supports frequency band B. The cell where the terminal was previously located before switching to the adjacent cell supports frequency band B, so the terminal will return to the previous cell, causing the frequency band supported by the second SIM card to change from frequency band C to frequency band B, thereby allowing the terminal to return to the dual-SIM dual-channel state.

[0059] As can be seen, when the terminal is in the dual-SIM dual-active state, it will switch to the dual-SIM dual-standby state through behavior 1; however, because the terminal is a dual-SIM dual-active terminal, it will return to the dual-SIM dual-active state through behavior 2. If the signal quality of the cell where the terminal is located is poor, it will switch to the dual-SIM dual-standby state through behavior 1, and the terminal will continuously switch between behaviors 1 and 2. When the terminal switches to the dual-SIM dual-standby state, the first SIM card occupies radio frequency resources, causing the second SIM card to be disconnected from the network. When the terminal switches to the dual-SIM dual-active state, due to the poor signal quality of the cell where the terminal is located, the second SIM card also enters the network-seeking state. Regardless of whether the second SIM card is in the disconnected state or the network-seeking state, it cannot perform voice or data services normally.

[0060] Based on this, the present disclosure proposes a cell switching method. Figure 1 FIG. 1 is a flow chart showing a cell switching method according to an exemplary embodiment. Figure 1 As shown, the cell switching method is used in a terminal and includes the following steps.

[0061] In step S11 , a second frequency band bound to a first frequency band registered with a first SIM card is determined.

[0062] The first SIM card in this disclosure can be a secondary card, with the corresponding second SIM card being the primary card. The first SIM card can also be a non-data card, with the corresponding second SIM card being a data card. When a terminal has dual SIM cards inserted, users typically set one SIM card as the data card or primary card, which is used for data services such as surfing the Internet, gaming, and watching live broadcasts. Users also set the other SIM card as a non-data card or secondary card, which is used for making and receiving calls and sending and receiving text messages.

[0063] The first and second frequency bands can be bound to form a specific frequency band combination that supports dual-SIM dual-active mode. The number of second frequency bands bound to the first frequency band can be one or more, depending on the actual situation. For example, if the first frequency band registered to the first SIM card is frequency band A, frequency band A can be bound to at least one of frequency bands B, C, and D. These specific frequency band combinations are recorded in a database. When subsequently determining whether the frequency band of the target cell forms a frequency band combination that supports dual-SIM dual-active mode with the first frequency band, the database can be checked to determine whether the second frequency band bound to the first frequency band includes the frequency band of the target cell.

[0064] In step S12, when the terminal is in a dual-SIM dual-communication state, the state of the first SIM card is determined.

[0065] The status of the first SIM card refers to the service status of the first SIM card. For example, if the first SIM card is performing a call service and a text message sending and receiving service, the first SIM card is in a communication state.

[0066] When the first SIM card is in a communication state, the second SIM card may experience data interruption. When the second SIM card is in a non-communication state, the second SIM card will not experience data interruption.

[0067] In step S13, when the first SIM card is in a communication state, the cell information of the candidate cell located in the second frequency band is sent to the base station.

[0068] The communication status includes a call status and a text message status. For example, when the first SIM card is in a call status, the cell information of the candidate cell on the second frequency band is sent to the base station.

[0069] The candidate cells located in the second frequency band include adjacent cells in the same frequency band as the current cell where the second SIM card is located, and / or adjacent cells in different frequency bands from the current cell where the second SIM card is located.

[0070] For example, if the first frequency band where the first SIM card is located is frequency band A, and the second frequency band bound to frequency band A includes frequency band B, frequency band C and frequency band D, if the cell where the second SIM card is currently located is frequency band B, then the cell information of the neighboring cells on frequency band B and / or the neighboring cells on frequency band C and frequency band D can be sent to the base station.

[0071] The candidate cell refers to a cell located in the second frequency band and adjacent to the cell where the terminal is located. The cell information includes the frequency point and cell identifier of the candidate cell.

[0072] It is understandable that the frequency points at which different cells are located may be the same or different, so the frequency bands at which different cells are located may be the same or different.

[0073] See also Figure 3 As shown, a cell refers to an area covered by a base station or a part of a base station in a cellular mobile communication system, and a terminal can communicate with the base station through a wireless channel in this area.

[0074] Assume that the current cell where the terminal is located is cell 1, and the adjacent cells adjacent to cell 1 are cell 2, cell 3, cell 4, cell 5, cell 6 and cell 7. If the first frequency band where the first SIM card is located is band A, the second frequency band bound to band A includes band B, band C and band D, and any combination of band A with band B, band C and band D can support the dual-card dual-channel state, and the frequency band where cell 1 of the current cell where the terminal is located is band B, then the frequency band registered with the second SIM card is also band B. At this time, band A registered with the first SIM card of the terminal and band B registered with the second SIM card can support the dual-card dual-channel state.

[0075] During the terminal's signal detection of adjacent cells, it is found that the signal quality of cells 5, 6, and 7 is better than that of cell 1 where the terminal is located. Therefore, the terminal will report the cell information of cells 5, 6, and 7 to the base station. Assuming that the frequency band where cells 5, 6, and 7 are located is frequency band M, the base station will select cell 5 from the three cells and redirect the terminal's second SIM card to cell 5. At this time, the frequency band registered with the second SIM card is frequency band M, and the frequency band combination between frequency band M and frequency band A does not support dual-SIM dual-active mode. The terminal will exit the dual-SIM dual-active mode and evolve into dual-SIM dual-standby mode.

[0076] When the terminal is in the dual-SIM dual-standby state, the dual-SIM dual-active terminal needs to regain the dual-SIM dual-active state. Therefore, it will search for cells on frequency bands B, C, and D from cell 1, cell 2, cell 3, cell 4, cell 6, and cell 7. Cell 1 is on frequency band B, so the terminal will redirect the second SIM card to cell 1. At this time, the frequency band registered by the second SIM is frequency band B, and the signal quality of cell 1 is poor. The terminal will request to switch to cell 5 with better signal quality. This cycle will result in higher power consumption of the terminal, and the second SIM card of the terminal will always be in the network-searching state or the network-disconnected state, and the ongoing services of the second SIM card will be forced to be interrupted.

[0077] In the present disclosure, when the first SIM card is in a communication state, the terminal finds that the signal quality of cells 2, 3, 4, 5, 6, and 7 is better than that of cell 1 during signal detection of adjacent cells. Assuming that the frequency bands of cells 2, 3, and 4 are Band C, Band C, and Band D, respectively, the terminal reports the cell information of candidate cells of cells 2, 3, and 4 to the base station. The base station selects cell 2 as the target cell from these three cells, and the terminal controls the second SIM card to be redirected to cell 2. At this time, the frequency band registered with the second SIM card is Band C. Since the frequency band combination between Band C and Band A supports the dual-SIM dual-active state, the terminal maintains the dual-SIM dual-active state and does not exit the dual-SIM dual-active state.

[0078] It can be understood that, when the second frequency band of the cell where the terminal is located before switching cells is the same as the second frequency band of the target cell where the terminal is located after switching cells, there is no need to re-register the second SIM card of the terminal for the frequency band; when the second frequency band of the cell where the terminal is located before switching cells is different from the second frequency band of the target cell where the terminal is located after switching cells, the second SIM card of the terminal needs to be re-registered to the second frequency band of the target cell.

[0079] Through the above technical solution, the second frequency band bound to the first frequency band registered with the first SIM card can be determined first. After the alternative cell located on the second frequency band is reported to the base station, the base station instructs the terminal to reside in the target cell after switching, and the frequency band of the target cell where the terminal is to reside after switching is also the second frequency band. Then, the frequency band registered by the second SIM card is also the second frequency band where the target cell is located. Since the frequency band combination between the second frequency band and the first frequency band can support the terminal in the dual-SIM dual-active state, after the terminal switches from the current cell with poor signal quality to the target cell with better signal quality, the second frequency band registered by the second SIM card can still support the dual-SIM dual-active state with the first frequency band, thereby ending the cyclic behavior of the terminal switching back and forth between the dual-SIM dual-active state and the dual-SIM dual-standby state.

[0080] First, the second frequency band where the second SIM card is located can be bound to the first frequency band to support the dual-SIM dual-active state. In the dual-SIM dual-active state, even if the first SIM card is in the communication state, the second SIM card can normally perform data and voice services. Second, since the alternative cell measured and reported by the terminal is located on the second frequency band, after the base station instructs the terminal to perform cell switching, the second frequency band of the target cell to which the terminal switches can still be bound to the first frequency band to support the dual-SIM dual-active state. The terminal will not switch back and forth between the dual-SIM dual-active state and the dual-SIM dual-standby state, nor will it cyclically execute the above-mentioned behavior 1 and behavior 2, thereby reducing terminal power consumption.

[0081] The following describes the specific embodiments involved in the above step S13. Figure 4 As shown, this embodiment is used to explain how the terminal measures and reports the cell information of the candidate cell when the second SIM card has different signal strengths (Reference Signal Received Power, RSRP).

[0082] In a first scenario, when the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a first threshold, the cell information of the intra-frequency cell is sent to the base station.

[0083] Taking the first threshold of -100db as an example, when the first SIM card is in communication state and the signal strength of the second SIM card is greater than -100db, it means that the signal quality of the current cell where the terminal is located is good, so the cell information of the adjacent cell with the same frequency band as the current cell will be sent to the base station.

[0084] When a terminal selects candidate cells from neighboring cells of the current cell where the terminal is located, it first measures the signals of multiple neighboring cells, and then selects candidate cells with higher signal quality than the current cell from the multiple neighboring cells. The terminal then sends the cell information of the candidate cells to the base station, which selects the target cell from the candidate cells. It can be seen that the adjacent co-frequency cells selected by the terminal are cells with higher signal quality than the current cell where the terminal is located. Since the signal strength of the current cell is greater than the first threshold, the signal quality of the current cell itself is better. Therefore, the signal quality of co-frequency cells with better signal quality than the current cell will be even better. Co-frequency cells refer to adjacent cells adjacent to the current cell where the terminal is located that share the same frequency band as the current cell.

[0085] For example, see Figure 3 As shown, assuming that the current cell where the terminal is located is cell 1, the adjacent cells adjacent to cell 1 are cell 2, cell 3, cell 4, cell 5, cell 6 and cell 7. If the frequency band where cell 1 is located is frequency band B, and the frequency band where cell 2 is located is also frequency band B, then cell 2 is the same frequency cell as cell 1.

[0086] Through the above technical solution, since the signal quality of the current cell where the terminal is located is better, the cell quality of the selected co-frequency cell is better. First, the terminal can switch to the co-frequency cell with better signal quality, and the second SIM card will be redirected to the co-frequency cell with better signal quality to better and faster perform the current data service or audio service. It can also be understood that the network speed of the current data service or audio service is faster. Second, since the co-frequency cell is a cell with the same frequency band as the current cell where the terminal is located, there is no need to re-register the second SIM card to the new frequency band.

[0087] In the second scenario, when the first SIM card is in communication state and the signal strength of the second SIM card is greater than a second threshold and less than a second threshold, the cell information of the candidate cell located in the second frequency band is sent to the base station.

[0088] Taking the first threshold of -100db and the second threshold of -110db as an example, when the first SIM card is in communication state and the signal strength of the second SIM card is greater than -110db and less than -100db, it means that the signal quality of the current cell where the terminal is located is average, so the cell information of the alternative cell located on the second frequency band will be sent to the base station.

[0089] The candidate cells located in the second frequency band include: adjacent cells in the same frequency band as the current cell where the terminal is located, and adjacent cells in a different frequency band from the current cell but in the second frequency band set.

[0090] The number of candidate cells located on the second frequency band is greater than or equal to the number of cells in the same frequency band. For example, assuming that the current cell where the terminal is located is cell 1, and the neighboring cells adjacent to cell 1 are cell 2, cell 3, cell 4, cell 5, cell 6, and cell 7, if the first frequency band where the first SIM card is located is frequency band A, and the second frequency bands bound to frequency band A include frequency band B, frequency band C, and frequency band D, if cells 1, cell 2, and cell 3 are located on frequency band B, cells 4 and cell 5 are located on frequency band C, and cell 6 is located on frequency band D.

[0091] In the first scenario, when the terminal reports the cell information of the intra-frequency cells, it reports the cell information of cells 2 and 3 to the base station. In the second scenario, when reporting the cell information of the candidate cells, it reports the cell information of cells 2, 3, 4, 5, and 6 to the base station. It can be seen that the number of candidate cells (5) reported to the base station in the second scenario is significantly greater than or equal to the number of intra-frequency cells (2) reported to the base station in the first scenario.

[0092] With the above technical solution, when the first SIM card is in a communication state and the signal quality of the second SIM card is average, the cell information of all adjacent cells located in the second frequency band can be reported to the base station, so that the base station has a larger number of adjacent cells to choose from. Then, the signal quality of the target cell screened from the larger number of adjacent cells will be better. After the terminal subsequently redirects the second SIM card to the target cell, the network speed of the data service or audio service currently being used by the second SIM card will be faster.

[0093] In a third scenario, when the first SIM card is in communication and the signal strength of the second SIM card is less than a second threshold, the service being performed by the second SIM card is determined. If the second SIM card is performing a target service, cell information of a candidate cell on the second frequency band is sent to the base station. If the second SIM card is performing a non-target service, cell information of neighboring cells of the cell where the terminal is located is sent to the base station.

[0094] Taking the second threshold of -110db as an example, when the first SIM card is in communication state and the signal strength of the second SIM card is less than -110db, it means that the signal quality of the current cell where the terminal is located is poor. At this time, the service situation will be distinguished to choose how to report the cell information.

[0095] When the first SIM card is in communication and the signal quality of the second SIM card is poor, if the second SIM card is performing the target service, in order to ensure the user experience, the cell information of the candidate cells on the second frequency band will be sent to the base station, thereby ensuring the user experience.

[0096] For example, if the target service is a gaming service, when the first SIM card is in communication mode and the second SIM card is in gaming mode, and the signal quality of the second SIM card is poor, the terminal will report all candidate cells on the second frequency band adjacent to the current cell to the base station, so that the base station can filter out the target cell from the candidate cells. In this process, on the one hand, the terminal can switch to the target cell with better signal quality, thereby ensuring that the user can use a faster network speed for gaming services; on the other hand, the terminal reports the candidate cell of the second frequency band that is bound to the first frequency band and can support dual-SIM dual-pass mode, so the terminal can still be in dual-SIM dual-pass mode, and the second SIM card will not accidentally interrupt the ongoing gaming service in the dual-SIM dual-pass mode, thereby ensuring the user experience.

[0097] Of course, the target business is not limited to the game business, but can also be video playback business and audio playback business, etc.

[0098] When the first SIM card is in communication state and the signal quality of the second SIM card is poor, if the second SIM card is not performing the target service, measurement reporting is performed normally, and cell information of neighboring cells with signal quality greater than the current cell is sent to the base station.

[0099] For example, taking the non-target service as a web browsing service, when the first SIM card is in a communication state and the second SIM card is in a web browsing service, and the signal quality of the second SIM card is poor, the terminal will report the cell information of the neighboring cells of the current cell whose signal quality is greater than that of the current cell to the base station, so that the base station has more options to select the target cell with better signal quality.

[0100] It is understandable that, when the first SIM card is in a non-communication state and / or the terminal exits the dual-SIM dual-connection state, the cell information of the neighboring cells of the cell where the terminal is located is reported to the base station.

[0101] When the first SIM card is in a non-communication state, the radio frequency resources of the terminal are released. Even if the terminal is not in a dual-SIM dual-communication state, the second SIM card can occupy the radio frequency resources to normally perform data services or audio services. Therefore, the terminal will normally perform cell measurement and reporting, and report the cell information of the neighboring cells of the current cell where the terminal is located whose signal quality is greater than that of the neighboring cell of the current cell to the base station.

[0102] When the terminal exits the dual-SIM dual-active state, it means that the terminal no longer requires the dual-SIM dual-active state. At this time, even if the frequency band of the second SIM card of the terminal is not within the frequency band combination supporting the dual-SIM dual-active state, causing the terminal to exit the dual-SIM dual-active state, the terminal will not continue to require to enter the dual-SIM dual-active state.

[0103] Figure 5 FIG. 1 is a block diagram of a cell switching device according to an exemplary embodiment. Figure 5 The cell switching device 500 includes: a frequency band determination module 510, a card status determination module 520 and a sending module 530.

[0104] The frequency band determination module 510 is configured to determine a second frequency band bound to the first frequency band registered by the first SMI card, where the frequency band combination of the first frequency band and the second frequency band supports the terminal in a dual-card dual-channel state;

[0105] The card status determination module 520 is configured to determine the status of the first SIM card when the terminal is in a dual-SIM dual-connection state;

[0106] The sending module 530 is configured to send cell information of a candidate cell located on the second frequency band to the base station when the first SIM card is in a communication state; the cell information is used to instruct the base station to screen out a target cell in which the terminal resides after switching cells from the candidate cells, and the frequency band in which the second SIM card of the terminal is located is the frequency band in which the target cell is located.

[0107] Optionally, the candidate cell located on the second frequency band includes a same-frequency cell on the same frequency band as the second SIM card; and the sending module 530 includes:

[0108] The sending submodule is configured to send the cell information of the intra-frequency cell to the base station when the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a first threshold.

[0109] Optionally, the sending module 530 includes:

[0110] The sending submodule is configured to send the cell information of the candidate cell located on the second frequency band to the base station when the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a second threshold and less than a second threshold.

[0111] Optionally, the sending module 530 includes:

[0112] a service determination submodule, configured to determine the service being performed by the second SIM card when the first SIM card is in a communication state and the signal strength of the second SIM card is less than a second threshold;

[0113] The sending submodule is configured to send the cell information of the candidate cell located on the second frequency band to the base station when the second SIM card performs the target service.

[0114] Optionally, the sending module 530 is further configured to send cell information of neighboring cells of the cell where the terminal is located to the base station when the second SIM card performs non-target services.

[0115] Optionally, the cell switching device 500 further includes:

[0116] a receiving module, configured to receive the cell information of the target cell returned by the base station;

[0117] The registration module is configured to register the frequency band where the second SIM card is located as the frequency band where the target cell is located based on the cell information of the target cell when the registered frequency band of the second SIM card is different from the frequency band where the target cell is located.

[0118] Optionally, the sending module 530 is further configured to report cell information of neighboring cells of the cell where the terminal is located to the base station when the first SIM card is in a non-communication state and / or the terminal exits a dual-SIM dual-connection state.

[0119] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0120] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon, which implement the steps of the cell switching method provided by the present disclosure when the program instructions are executed by a processor.

[0121] Figure 6 6 is a block diagram illustrating an apparatus 600 for cell handover according to an exemplary embodiment. For example, the apparatus 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0122] Reference Figure 6 , the apparatus 600 may include one or more of the following components: a processing component 602 , a memory 604 , a power component 606 , a multimedia component 608 , an audio component 610 , an input / output interface 612 , a sensor component 614 , and a communication component 616 .

[0123] The processing component 602 generally controls the overall operation of the device 600, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 602 may include one or more modules to facilitate interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

[0124] The memory 604 is configured to store various types of data to support operations on the device 600. Examples of such data include instructions for any application or method operating on the device 600, contact data, phone book data, messages, pictures, videos, etc. The memory 604 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0125] The power supply component 606 provides power to the various components of the device 600. The power supply component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 600.

[0126] The multimedia component 608 includes a screen that provides an output interface between the device 600 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front camera and / or a rear camera. When the device 600 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0127] The audio component 610 is configured to output and / or input audio signals. For example, the audio component 610 includes a microphone (MIC), which is configured to receive external audio signals when the device 600 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, the audio component 610 also includes a speaker for outputting audio signals.

[0128] The input / output interface 612 provides an interface between the processing component 602 and peripheral interface modules, such as a keyboard, a click wheel, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0129] The sensor assembly 614 includes one or more sensors for providing various aspects of the status assessment of the device 600. For example, the sensor assembly 614 can detect the open / closed state of the device 600, the relative positioning of components, such as the display and keypad of the device 600. The sensor assembly 614 can also detect changes in the position of the device 600 or a component of the device 600, the presence or absence of user contact with the device 600, the orientation or acceleration / deceleration of the device 600, and temperature changes of the device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 614 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0130] The communication component 616 is configured to facilitate wired or wireless communication between the device 600 and other devices. The device 600 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0131] In an exemplary embodiment, the apparatus 600 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0132] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 604 including instructions, which can be executed by the processor 620 of the apparatus 600 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0133] In addition to being an independent electronic device, the above-mentioned device may also be part of an independent electronic device. For example, in one embodiment, the device may be an integrated circuit (IC) or a chip, wherein the integrated circuit may be an IC or a collection of multiple ICs; the chip may include but is not limited to the following types: GPU (Graphics Processing Unit), CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), SOC (System on Chip, SoC, system on chip or system-on-chip), etc. The above-mentioned integrated circuit or chip can be used to execute executable instructions (or codes) to implement the above-mentioned cell switching method. The executable instructions may be stored in the integrated circuit or chip, or may be obtained from other devices or equipment, for example, the integrated circuit or chip includes a processor, a memory, and an interface for communicating with other devices. The executable instruction can be stored in the memory, and when the executable instruction is executed by the processor, the above-mentioned cell switching method is implemented; alternatively, the integrated circuit or chip can receive the executable instruction through the interface and transmit it to the processor for execution to implement the above-mentioned cell switching method.

[0134] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned cell handover method when executed by the programmable device.

[0135] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the present disclosure. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0136] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A cell handover method, characterized in that: include: Determine a second frequency band bound to a first frequency band registered with a first SIM card, where a frequency band combination of the first frequency band and the second frequency band supports a dual-SIM dual-communication state of the terminal; When the terminal is in a dual-SIM dual-connection state, determining the state of the first SIM card; When the first SIM card is in a communication state, cell information of a candidate cell located on the second frequency band is sent to a base station; the cell information is used to instruct the base station to screen out a target cell in which the terminal resides after switching cells from the candidate cells, and the frequency band in which the second SIM card of the terminal is located is the frequency band in which the target cell is located.

2. The method according to claim 1, characterized in that The candidate cell located on the second frequency band includes a same-frequency cell on the same frequency band as the second SIM card; The step of sending the cell information of the candidate cell located on the second frequency band to the base station when the first SIM card is in the communication state includes: When the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a first threshold, the cell information of the intra-frequency cell is sent to the base station.

3. The method according to claim 1, characterized in that The step of sending the cell information of the candidate cell located on the second frequency band to the base station when the first SIM card is in the communication state includes: When the first SIM card is in a communication state and the signal strength of the second SIM card is greater than a second threshold and less than a second threshold, the cell information of the candidate cell located in the second frequency band is sent to the base station.

4. The method according to claim 1, wherein The step of sending the cell information of the candidate cell located on the second frequency band to the base station when the first SIM card is in a communication state includes: When the first SIM card is in a communication state and the signal strength of the second SIM card is less than a second threshold, determining a service being performed by the second SIM card; In case that the second SIM card performs a target service, the cell information of the candidate cell located on the second frequency band is sent to the base station.

5. The method according to claim 4, characterized in that The method further comprises: In a case where the second SIM card performs non-target services, the cell information of the neighboring cells of the cell where the terminal is located is sent to the base station.

6. The method according to claim 1, characterized in that After sending the cell information of the candidate cell located on the second frequency band to the base station, the method further includes: receiving cell information of the target cell returned by the base station; In a case where the registered frequency band of the second SIM card is different from the frequency band of the target cell, the frequency band of the second SIM card is registered as the frequency band of the target cell based on the cell information of the target cell.

7. The method according to claim 1, characterized in that The method further comprises: When the first SIM card is in a non-communication state and / or the terminal exits a dual-SIM dual-connection state, the cell information of the neighboring cells of the cell where the terminal is located is reported to the base station.

8. A cell switching device, characterized in that: include: A frequency band determination module is configured to determine a second frequency band bound to a first frequency band registered with a first SIM card, wherein a frequency band combination of the first frequency band and the second frequency band supports a terminal in a dual-card dual-pass state, and the frequency band in which the second SIM card of the terminal is located is the frequency band in which the target cell is located; a card status determination module, configured to determine the status of the first SIM card when the terminal is in a dual-SIM dual-connection state; The sending module is configured to send cell information of candidate cells located on the second frequency band to the base station when the first SIM card is in a communication state; the cell information is used to instruct the base station to screen out a target cell in which the terminal resides after switching cells from the candidate cells.

9. A terminal, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: Execute the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the program instructions are executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

11. A chip, characterized in that: The method comprises a processor and an interface; the processor is used to read instructions to execute the method according to any one of claims 1 to 7.

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