CN115065997B

CN115065997B - Cell changing method and terminal equipment

Info

Publication number: CN115065997B
Application number: CN202111669039.9A
Authority: CN
Inventors: 赵文龙
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-01-31
Anticipated expiration: 2041-12-30
Also published as: CN115065997A

Abstract

The embodiment of the application provides a cell change method and terminal equipment, and is applied to the technical field of communication. The method inquires a corresponding network selection parameter deviant according to the service type corresponding to the communication service executed by the first user identification card, and adjusts an initial network selection parameter according to the network selection parameter deviant to improve at least one of the search period of cell search performed by the second user identification card, the reselection threshold of the second user identification card to reselect to a candidate cell, the reselection time parameter of the second user identification card to reselect to the candidate cell and the switching threshold of the second user identification card to switch to the candidate cell. Therefore, in the embodiment of the application, at least one of the search period, the reselection threshold, the switching threshold and the reselection time parameter can be dynamically adjusted based on the service type corresponding to the communication service executed by the first subscriber identity card, so that the influence of the second subscriber identity card on the communication service of the first subscriber identity card is reduced while the network selection operation of the second subscriber identity card is considered.

Description

Cell changing method and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell changing method and a terminal device.

Background

With the continuous development of wireless communication technology, people rely on terminal equipment more and more, and most terminal equipment supports dual-card communication in order to bring convenience to users. The operation mode of the terminal equipment with dual sim cards and dual standby (DSDS) may be a single pass mode, and at this time, two subscriber identity cards in the terminal equipment share the same Radio Frequency (RF) module.

For the terminal device in the single-pass mode, while the first subscriber identity card executes the communication services such as voice and file transmission, the second subscriber identity card can still perform cell search and judge whether to start operations such as cell reselection or cell switching.

In the process of cell search, cell reselection and cell switching of the second subscriber identification card, the second subscriber identification card can preempt radio frequency resources, so that the communication service of the first subscriber identification card is interrupted, and the normal operation of the communication service of the first subscriber identification card is influenced.

Disclosure of Invention

The embodiment of the application provides a cell change method and terminal equipment, which dynamically adjust network selection parameters of a second subscriber identity card according to the service type executed by a first subscriber identity card, and reduce the influence of the second subscriber identity card on the communication service of the first subscriber identity card while considering the network selection operation of the second subscriber identity card.

In a first aspect, an embodiment of the present application provides a cell change method, which is applied to a terminal device, where the terminal device includes a first subscriber identity card and a second subscriber identity card, and the first subscriber identity card and the second subscriber identity card share a same radio frequency module, and the method includes: the method comprises the steps that terminal equipment obtains a service type corresponding to a communication service executed by a first user identification card; the terminal equipment inquires a network selection parameter deviant corresponding to the service type; the terminal equipment adjusts the initial network selection parameters according to the offset values of the network selection parameters to obtain target network selection parameters; the terminal equipment executes the judgment of the cell change aiming at the second user identification card according to the target network selection parameter; the network selection parameter deviant comprises a first type parameter deviant, and a target network selection parameter corresponding to the first type parameter deviant is larger than an initial network selection parameter corresponding to the first type parameter deviant; the first type of parameter offset value includes at least one of a search period offset value, a first reselection threshold offset value for the candidate cell, a first handover threshold offset value for the candidate cell, and a reselection time parameter offset value.

The network selection parameter deviant can be divided into a first network selection parameter deviant corresponding to a voice service type, a second network selection parameter deviant corresponding to a game service type, a third network selection parameter deviant corresponding to a video service type and a fourth network selection parameter deviant corresponding to a file transmission service type according to different service types corresponding to communication services executed by the first user identification card.

In this way, the embodiment of the application may dynamically adjust at least one of the search period, the reselection threshold, the handover threshold, and the reselection time parameter based on the service type corresponding to the communication service executed by the first subscriber identity card. By improving the search period of the second user identification card for cell search, the search frequency of the second user identification card for cell search is reduced, so that the radio frequency resource occupied by the second user identification card for cell search in unit time length is reduced; by improving the reselection threshold and the reselection time parameter of the second subscriber identity card reselecting the candidate cell, the difficulty of the second subscriber identity card reselecting the candidate cell is improved, so that the occupation of radio frequency resources caused by the reselection operation of the second subscriber identity card can be reduced; the difficulty of switching the second subscriber identification card to the candidate cell is improved by improving the switching threshold of switching the second subscriber identification card to the candidate cell, so that the occupation of radio frequency resources caused by the switching operation of the second subscriber identification card can be reduced. Therefore, when the first subscriber identity card executes the communication service, the terminal equipment can reduce the influence of the second subscriber identity card on the communication service of the first subscriber identity card while considering the network selection operation of the second subscriber identity card.

In an optional implementation manner, the adjusting, by the terminal device, the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter includes performing at least one of the following operations: the terminal equipment takes the sum of the initial search period and the offset value of the search period as a target search period; the terminal device takes the sum of the first initial reselection threshold and the first reselection threshold offset value as a first target reselection threshold; the terminal device takes the sum of the first initial switching threshold and the first switching threshold deviant as a first target switching threshold; the terminal equipment takes the sum of the initial reselection time parameter and the reselection time parameter offset value as a target reselection time parameter; wherein the search period offset value, the first reselection threshold offset value, the first handover threshold offset value, and the reselection time parameter offset value are all positive numbers. Therefore, the corresponding target network selection parameter can be obtained by summing the first-class parameter deviation value and the corresponding initial network selection parameter, so that the calculation mode of the target network selection parameter is simpler.

In an optional implementation manner, the network selection parameter offset value further includes a second-type parameter offset value, and a target network selection parameter corresponding to the second-type parameter offset value is smaller than an initial network selection parameter corresponding to the second-type parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for the serving cell and a second handover threshold offset value for the serving cell. In this way, the difficulty of reselecting the second subscriber identity card to the candidate cell is improved by reducing the reselection threshold when the second subscriber identity card leaves from the serving cell, so that the occupation of radio frequency resources caused by the reselection operation of the second subscriber identity card is further reduced; by reducing the switching threshold when the second user identification card leaves from the service cell, the difficulty of switching the second user identification card to the candidate cell is improved, and the occupation of radio frequency resources caused by the switching operation of the second user identification card is further reduced.

In an optional implementation manner, the adjusting, by the terminal device, the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter includes performing at least one of the following operations: the terminal device takes the difference value between the second initial reselection threshold and the second reselection threshold offset value as a second target reselection threshold; the terminal device takes the difference value of the second initial switching threshold and the second switching threshold deviant as a second target switching threshold; and the second reselection threshold deviation value and the second switching threshold deviation value are positive numbers. Therefore, the corresponding target network selection parameter can be obtained by calculating the difference value between the initial network selection parameter and the corresponding second-class parameter offset value, so that the calculation mode of the target network selection parameter is simpler.

In an optional implementation manner, before the terminal device adjusts the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter, the method further includes: and the terminal equipment receives the initial network selection parameters sent by the network equipment.

In an alternative embodiment, the service types include a voice service type, a game service type, a video service type, and a file transfer service type; the offset value of the network selection parameter corresponding to each service type is different. In this way, by setting the network selection parameter offset values corresponding to different service types to be different, when the first subscriber identity card executes different communication services, the target network selection parameters of the second subscriber identity card for network selection operation are also different, so that better balance effect can be achieved between the communication service executed by the first subscriber identity card and the network selection operation of the second subscriber identity card.

In an optional implementation, the service type is a voice service type; before the terminal device adjusts the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter, the method further comprises the following steps: the terminal equipment displays a service priority selection interface; the service priority selection interface comprises a first option, a second option and a third option, wherein the first option is used for indicating the service priority of the first user identification card, the second option is used for indicating the service priority of the second user identification card, and the third option is used for indicating the service priority sequence of selecting the first user identification card and the second user identification card according to historical voice data; and the terminal equipment responds to the selection operation of the first option, and executes the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter. Or the terminal equipment responds to the selection operation of the third option and acquires the historical voice data of the first user identification card and the second user identification card; the terminal equipment determines a historical use preference value according to historical voice data; and when the historical use preference value is larger than the preset preference value, the terminal equipment executes the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter. Therefore, the service priority sequence of the first user identification card and the second user identification card is determined through the options which are set in a personalized manner, and the corresponding network selection parameters are determined according to different service priority sequences, so that the network selection operation executed by the second user identification card is more in line with the personalized requirements of the user.

In an optional embodiment, the historical voice data of the first user identification card comprises a first historical use time length and a first historical use time, and the historical voice data of the second user identification card comprises a second historical use time length and a second historical use time; the terminal equipment determines a historical use preference value according to historical voice data, and the method comprises the following steps: the terminal equipment calculates the ratio of the first historical use time length to the second historical use time length to obtain the use time length proportion; the terminal equipment calculates the ratio of the first historical use times to the second historical use times to obtain the use time ratio; and the terminal equipment takes the sum of the usage duration proportion and the usage frequency proportion as a historical usage preference value. In this way, the historical use preference value of the user can be accurately determined through the first historical use time length and the first historical use times of the first user identification card and the second historical use time length and the second historical use times of the second user identification card.

In an optional implementation manner, after the terminal device obtains a service type corresponding to a communication service executed by the first subscriber identity card, the method further includes: and when receiving the selection operation of the first option or the historical use preference value is larger than the preset preference value, the terminal equipment forbids to respond to the paging message sent by the network equipment to the second subscriber identity card. Therefore, when the modem forbids to respond to the paging message sent by the network equipment to the second subscriber identity card, the communication service executed by the first subscriber identity card caused by responding to the paging message can be prevented from being interrupted, and the fluency of the voice service of the first subscriber identity card is ensured.

In an optional implementation, the service type is a video service type; before the terminal device adjusts the initial network selection parameter according to the offset value of the network selection parameter to obtain the target network selection parameter, the method further comprises the following steps: the method comprises the steps that terminal equipment obtains data caching quantity of communication service corresponding to video service types; and when the data buffer amount is less than or equal to the preset buffer amount, the terminal equipment executes the step of adjusting the initial network selection parameter according to the network selection parameter deviant to obtain a target network selection parameter. Therefore, when the data caching amount is smaller than or equal to the preset caching amount, the cell search period of the second user identification card is prolonged, the difficulty of cell reselection and cell switching is increased, the radio frequency resources occupied by the second user identification card are reduced, and the fluency of videos is improved.

In an optional implementation manner, the service type is a file transfer service type; and when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the terminal equipment executes the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter. Therefore, when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the communication service is an emergency service, at the moment, the cell search period of the second user identification card can be prolonged, the difficulty of cell reselection and cell switching can be improved, and therefore the radio frequency resource occupied by the second user identification card can be reduced, and the communication service can be quickly executed and completed.

In a second aspect, an embodiment of the present application provides a terminal device, including: the system comprises a first user identification card, a second user identification card, a radio frequency module, an application processor and a modem, wherein the first user identification card and the second user identification card share the radio frequency module; the application processor is used for acquiring a service type corresponding to the communication service executed by the first subscriber identity module card; the application processor or the modem is used for inquiring the network selection parameter offset value corresponding to the service type; the modem is used for adjusting the initial network selection parameters according to the offset value of the network selection parameters to obtain target network selection parameters; the modem is also used for executing the judgment of the cell change aiming at the second user identification card according to the target network selection parameter; the network selection parameter deviant comprises a first type parameter deviant, and a target network selection parameter corresponding to the first type parameter deviant is larger than an initial network selection parameter corresponding to the first type parameter deviant; the first type of parameter offset value includes at least one of a search period offset value, a first reselection threshold offset value for the candidate cell, a first handover threshold offset value for the candidate cell, and a reselection time parameter offset value.

In an optional embodiment, the modem is specifically configured to perform at least one of the following operations: taking the sum of the initial search period and the offset value of the search period as a target search period; taking the sum of the first initial reselection threshold and the first reselection threshold offset value as a first target reselection threshold; taking the sum of the first initial switching threshold and the first switching threshold offset value as a first target switching threshold; taking the sum of the initial reselection time parameter and the reselection time parameter offset value as a target reselection time parameter; wherein the search period offset value, the first reselection threshold offset value, the first handover threshold offset value, and the reselection time parameter offset value are all positive numbers.

In an optional implementation manner, the network selection parameter offset value further includes a second-type parameter offset value, and a target network selection parameter corresponding to the second-type parameter offset value is smaller than an initial network selection parameter corresponding to the second-type parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for the serving cell and a second handover threshold offset value for the serving cell.

In an optional embodiment, the modem is specifically configured to perform at least one of the following operations: taking the difference value of the second initial reselection threshold and the second reselection threshold offset value as a second target reselection threshold; taking the difference value of the second initial switching threshold and the second switching threshold deviant as a second target switching threshold; wherein the second reselection threshold offset value and the second handover threshold offset value are both positive numbers.

In an optional implementation manner, the radio frequency module is configured to receive an initial network selection parameter sent by a network device.

In an alternative embodiment, the service types include a voice service type, a game service type, a video service type, and a file transfer service type; and the network selection parameter deviation values corresponding to the service types are different.

In an optional implementation manner, the terminal device includes a display screen, and the service type is a voice service type; the display screen is used for displaying a service priority selection interface; the service priority selection interface comprises a first option, a second option and a third option, wherein the first option is used for indicating the service priority of the first user identification card, the second option is used for indicating the service priority of the second user identification card, and the third option is used for indicating the service priority sequence of selecting the first user identification card and the second user identification card according to historical voice data; the application processor is also used for responding to the selection operation of the first option and triggering the modem to execute the step of adjusting the initial network selection parameter according to the network selection parameter deviant to obtain a target network selection parameter; or the application processor is further used for responding to the selection operation of the third option and acquiring historical voice data of the first user identification card and the second user identification card; the application processor is further used for determining a historical use preference value according to the historical voice data; and the application processor is also used for triggering the modem to execute the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter when the historical use preference value is greater than the preset preference value.

In an optional embodiment, the historical voice data of the first user identification card comprises a first historical use time length and a first historical use time, and the historical voice data of the second user identification card comprises a second historical use time length and a second historical use time; the application processor is specifically configured to: calculating the ratio of the first historical use time length to the second historical use time length to obtain a use time length ratio; calculating the ratio of the first historical use times to the second historical use times to obtain the use time ratio; and taking the sum of the usage time length proportion and the usage time proportion as a historical usage preference value.

In an alternative embodiment, the modem is further configured to: and when receiving a selection operation of the first option or the historical use preference value is larger than a preset preference value, forbidding a paging message sent to the second subscriber identity card by the response network equipment.

In an optional implementation, the service type is a video service type; an application processor further configured to: acquiring a data caching amount of a communication service corresponding to the video service type; and when the data buffering amount is less than or equal to the preset buffering amount, triggering the modem to adjust the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter.

In an optional implementation manner, the service type is a file transfer service type; an application processor further configured to: and when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, triggering the modem to execute a step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter.

In a third aspect, an embodiment of the present application provides a terminal device, which includes a memory and a processor, where the memory is used to store a computer program, and the processor is used to invoke the computer program, so as to implement the above-mentioned cell change method.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program or an instruction is stored, and when the computer program or the instruction is executed, the method for changing a cell is implemented.

In each of the possible implementations of the second aspect to the fourth aspect, the effect is similar to that in the first aspect and the possible design of the first aspect, and details are not repeated here.

Drawings

Fig. 1 is an application scenario architecture diagram of a terminal device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a hardware system of a terminal device according to an embodiment of the present application;

fig. 3 is a flowchart of a method for determining a network selection parameter offset value according to an embodiment of the present application;

fig. 4 is a flowchart of a cell search method provided in the present application;

fig. 5 is a flowchart of a cell reselection method provided in this application;

fig. 6 is a flowchart of a cell handover method according to an embodiment of the present application;

fig. 7 is a schematic diagram of a service priority selection interface provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

In order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish identical items or similar items with substantially the same functions and actions. For example, the first chip and the second chip are only used for distinguishing different chips, and the sequence order thereof is not limited. Those skilled in the art will appreciate that the terms "first," "second," and the like do not denote any order or importance, but rather the terms "first," "second," and the like do not denote any order or importance.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

With the continuous development of wireless communication technology, people rely on terminal equipment more and more, and the terminal equipment gradually becomes a common tool in daily life and work of people. In addition, in order to satisfy the requirement that a user can use a plurality of user identification cards to communicate in the same terminal device, the terminal device is developed from single-card single standby to double-card double standby at present.

The dual-card dual-standby terminal equipment refers to that one terminal equipment is provided with two user identification cards which can be in a standby state at the same time and can realize services of making or receiving calls, receiving and sending short messages, carrying out voice calls and the like. The working modes of the dual-card dual-standby terminal equipment can be divided into a single-pass mode and a dual-pass mode, and the single-pass mode terminal equipment can support two numbers to be simultaneously online under the condition that hardware cost is hardly increased, so that most dual-card dual-standby terminal equipment only supports the single-pass mode.

It should be understood that the embodiments of the present application may also be used in a multi-card multi-standby terminal device, and the embodiments of the present application are only described with respect to a dual-card dual-standby terminal device. The multi-card multi-standby refers to that one terminal device is provided with at least three user identification cards, the user identification cards can be in a standby state at the same time, and the multi-card multi-standby can be understood as an extended scene of dual-card dual-standby.

In addition, the subscriber identity module in this embodiment of the application may be a Subscriber Identity Module (SIM) card, an embedded SIM (embedded-SIM) card, a Universal Subscriber Identity Module (USIM) card, a User Identity Module (UIM) card, and the like, and may serve as an electronic module for identifying a user, where the eSIM card may be understood as a conventional SIM card directly embedded in a chip of the terminal device, rather than being an independent removable component added to the terminal device, and the user does not need to insert a physical SIM card. The embodiment of the present application takes a subscriber identity module card as an SIM card as an example for description.

As shown in fig. 1, the terminal device for dual-card dual standby and in single-pass mode includes a SIM card module 110, a modem 120 coupled with the SIM card module 110, a radio frequency module 130 coupled with the modem 120, an Application Processor (AP) 140 connected with the modem 120, and an antenna 150 coupled with the radio frequency module 130.

The SIM card module 110 includes a SIM card 1 and a SIM card 2, where the SIM card 1 is referred to as a first subscriber identity card, and the SIM card 2 is referred to as a second subscriber identity card. The application processor 140 is primarily responsible for handling operating systems, user interfaces, applications, and the like, and the modem 120 is primarily responsible for handling wireless communications. The rf module 130 is used for rf transceiving, frequency synthesis (frequency mixing), power amplification, and the like, that is, the rf module 130 may be used for receiving and transmitting signals through an rf resource, where the rf module 130 includes an rf transmitting path and an rf receiving path. Network device 200 may be a base station or base station controller configured to provide cellular wireless communication services to terminal device 100, and terminal device 100 may communicate with network device 200 via antenna 150.

It is understood that the modem 120 and the application processor 140 may be integrated into the same processor, and of course, the modem 120 and the application processor 140 may be provided separately. The modem 120 may also be referred to as a modem processor.

In the application process, the uplink data packet related to the service of the SIM card 1 and the uplink data packet related to the service of the SIM card 2 may be sent to the modem 120, the modem 120 sends the uplink data packets of the SIM card 1 and the SIM card 2 to the radio frequency module 130, the radio frequency transmission path in the radio frequency module 130 amplifies the uplink data signal, and the amplified uplink data signal is converted into electromagnetic waves through the antenna 150 and radiated out, so as to be received by the network device 200. Correspondingly, the antenna 150 may also receive a downlink data packet related to the service of the SIM card 1 and a downlink data packet related to the service of the SIM card 2, which are sent by the network device 200, send the downlink data packet to the radio frequency module 130, filter, amplify, and the like a signal of the downlink data packet through a radio frequency receiving path in the radio frequency module 130, and then transmit the signal to the modem 120.

It can be seen that, for a terminal device with dual cards and dual standby and in a single-pass mode, the first subscriber identity card and the second subscriber identity card share the same radio frequency module 130, and both of them may occupy radio frequency resources of the radio frequency module 130 when executing a communication service. Moreover, when the first subscriber identity card executes communication services such as voice and file transmission, the second subscriber identity card can still perform cell search and judge whether to start operations such as cell reselection or cell handover.

Therefore, in the process of cell search, cell reselection and cell handover performed by the second subscriber identity card, it may preempt the radio frequency resource of the radio frequency module 130, so that the communication service of the first subscriber identity card is interrupted, thereby affecting the normal operation of the communication service of the first subscriber identity card.

For example, when the first subscriber identity card performs a voice call or a video call using a social application (e.g., weChat), the second subscriber identity card performs cell search, cell reselection, and cell handover operations, which occupy radio frequency resources, thereby causing a pause or even an interruption of the voice call or the video call of the first subscriber identity card.

In the related technology, the search period of the second subscriber identity card for cell search is increased, the ping-pong handover inhibition time is increased, the handover time between cells is increased, and when the terminal equipment is detected to be in a high-speed state according to a sensor arranged in the terminal equipment, parameters of the second subscriber identity card for cell reselection or handover are adjusted, so that the difficulty of cell reselection and handover of the second subscriber identity card is increased, the influence of the second subscriber identity card on the communication service of the first subscriber identity card when the second subscriber identity card performs cell search, cell reselection and cell handover is reduced, and the use experience of the communication service of the first subscriber identity card is improved. The parameters of the search period, the ping-pong handover inhibition time length, the inter-cell handover time length and the like are fixed values under any condition.

However, although the above-mentioned several ways may improve the experience of the communication service of the first subscriber identity card, the second subscriber identity card may not reside in the network with better signal quality in time, so that the normal operation of the communication service of the second subscriber identity card is affected, for example, the second subscriber identity card may not receive a call, or the call quality of the second subscriber identity card is poor.

Based on this, an embodiment of the present application provides a cell change method and a terminal device, where a corresponding network selection parameter offset value is queried according to a service type corresponding to a communication service executed by a first subscriber identity card, and an initial network selection parameter is adjusted according to the network selection parameter offset value, so as to improve at least one of a search period for a second subscriber identity card to perform cell search, a reselection threshold for the second subscriber identity card to reselect to a candidate cell, a reselection time parameter for the second subscriber identity card to reselect to the candidate cell, and a handover threshold for the second subscriber identity card to handover to the candidate cell. Therefore, in the embodiment of the application, at least one of the search period, the reselection threshold, the switching threshold and the reselection time parameter can be dynamically adjusted based on the service type corresponding to the communication service executed by the first subscriber identity card, so that the influence of the second subscriber identity card on the communication service of the first subscriber identity card is reduced while the network selection operation of the second subscriber identity card is considered.

When the search period of the second user identification card for cell search is increased, the frequency of the second user identification card for cell search is reduced, so that the radio frequency resource occupied by the second user identification card for cell search in unit time length is reduced; when the reselection threshold and the reselection time parameter of the second subscriber identity card reselect the candidate cell are increased, the difficulty of the second subscriber identity card reselecting the candidate cell is increased, so that the occupation of radio frequency resources caused by the reselection operation of the second subscriber identity card can be reduced; when the switching threshold of the second subscriber identification card to the candidate cell is increased, the difficulty of switching the second subscriber identification card to the candidate cell is increased, so that the occupation of radio frequency resources caused by the switching operation of the second subscriber identification card can be reduced. When the radio frequency resource occupied by the second user identification card is reduced, the radio frequency resource occupied by the first user identification card is improved, so that the performance of the communication service of the first user identification card is improved.

The cell change method provided by the embodiment of the application can be applied to terminal equipment with a wireless communication function. The terminal equipment may also be referred to as a terminal (terminal), user Equipment (UE), mobile Station (MS), mobile Terminal (MT), and the like. The terminal device may be a mobile phone (mobile phone), a smart tv, a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

In order to better understand the embodiments of the present application, the following describes the structure of the terminal device according to the embodiments of the present application. Exemplarily, fig. 2 is a schematic structural diagram of a hardware system of a terminal device according to an embodiment of the present application.

The terminal device 100 may include a processor 210, an external memory interface 220, an internal memory 221, a Universal Serial Bus (USB) interface 230, a charging management module 240, a power management module 241, a battery 242, an antenna 1, an antenna 2, a mobile communication module 250, a wireless communication module 260, an audio module 270, a speaker 270A, a receiver 270B, a microphone 270C, an earphone interface 270D, a sensor module 280, a key 290, a motor 291, an indicator 292, a camera 293, a display screen 294, a SIM card interface 295, and the like. The sensor module 280 may include a pressure sensor 280A, a gyroscope sensor 28, an air pressure sensor 280C, a magnetic sensor 280D, an acceleration sensor 280E, a distance sensor 280F, a proximity light sensor 280G, a fingerprint sensor 280H, a temperature sensor 280J, a touch sensor 280K, an ambient light sensor 280L, a bone conduction sensor 280M, and the like.

It is to be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation to the terminal device 100. In other embodiments of the present application, terminal device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 210 may include one or more processing units, such as: the processor 210 may include an application processor 140, a modem 120, a Graphics Processor (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), among others. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can generate an operation control signal according to the instruction operation code and the time sequence signal to finish the control of instruction fetching and instruction execution.

A memory may also be provided in processor 210 for storing instructions and data. In some embodiments, the memory in processor 210 is a cache memory. The memory may hold instructions or data that have just been used or recycled by processor 210. If the processor 210 needs to use the instruction or data again, it may be called from memory. Avoiding repeated accesses reduces the latency of the processor 210, thereby increasing the efficiency of the system.

In some embodiments, processor 210 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus comprising a serial data line (SDA) and a Serial Clock Line (SCL). In some embodiments, processor 210 may include multiple sets of I2C buses. The processor 210 may be coupled to the touch sensor 280K, the charger, the flash, the camera 293, and the like through different I2C bus interfaces. For example: the processor 210 may be coupled to the touch sensor 280K through an I2C interface, so that the processor 210 and the touch sensor 280K communicate through an I2C bus interface to implement a touch function of the terminal device 100.

The I2S interface may be used for audio communication. In some embodiments, processor 210 may include multiple sets of I2S buses. Processor 210 may be coupled to audio module 270 via an I2S bus, enabling communication between processor 210 and audio module 270. In some embodiments, the audio module 270 may transmit the audio signal to the wireless communication module 260 through the I2S interface, so as to implement a function of answering a call through a bluetooth headset.

The PCM interface may also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, audio module 270 and wireless communication module 260 may be coupled by a PCM bus interface. In some embodiments, the audio module 270 may also transmit audio signals to the wireless communication module 260 through the PCM interface, so as to implement a function of answering a call through a bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communications. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 210 with the wireless communication module 260. For example: the processor 210 communicates with the bluetooth module in the wireless communication module 260 through the UART interface to implement the bluetooth function. In some embodiments, the audio module 270 may transmit the audio signal to the wireless communication module 260 through a UART interface, so as to realize the function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 210 with peripheral devices such as the display screen 294, the camera 293, and the like. The MIPI interface includes a Camera Serial Interface (CSI), a display screen serial interface (DSI), and the like. In some embodiments, processor 210 and camera 293 communicate via a CSI interface to implement the capture function of terminal device 100. The processor 210 and the display screen 294 communicate through the DSI interface, and implement a display function of the terminal device 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, a GPIO interface may be used to connect processor 210 with camera 293, display 294, wireless communication module 260, audio module 270, sensor module 280, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, an MIPI interface, and the like.

The USB interface 230 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 230 may be used to connect a charger to charge the terminal device 100, and may also be used to transmit data between the terminal device 100 and a peripheral device. And the method can also be used for connecting a headset and playing audio through the headset. The interface may also be used to connect other electronic devices, such as AR devices and the like.

It should be understood that the connection relationship between the modules illustrated in the embodiment of the present application is an exemplary illustration, and does not limit the structure of the terminal device 100. In other embodiments of the present application, the terminal device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charge management module 240 is configured to receive a charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 240 may receive charging input from a wired charger via the USB interface 230. In some wireless charging embodiments, the charging management module 240 may receive a wireless charging input through a wireless charging coil of the terminal device 100. The charging management module 240 may also supply power to the terminal device through the power management module 241 while charging the battery 242.

The power management module 241 is used to connect the battery 242, the charging management module 240 and the processor 210. The power management module 241 receives input from the battery 242 and/or the charging management module 240, and provides power to the processor 210, the internal memory 221, the display 294, the camera 293, and the wireless communication module 260. The power management module 241 may also be used to monitor parameters such as battery capacity, battery cycle number, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 241 may also be disposed in the processor 210. In other embodiments, the power management module 241 and the charging management module 240 may be disposed in the same device.

The wireless communication function of the terminal device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. The antennas in terminal device 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 250 may provide a solution for wireless communication including 2G/3G/4G/5G, etc. applied to the terminal device 100, and the mobile communication module 250 may also be referred to as a radio frequency module 130. The mobile communication module 250 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 250 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 250 can also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 250 may be disposed in the processor 210. In some embodiments, at least some of the functional modules of the mobile communication module 250 may be disposed in the same device as at least some of the modules of the processor 210.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 270A, the receiver 270B, etc.) or displays an image or video through the display screen 294. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be separate from the processor 210, and may be disposed in the same device as the mobile communication module 250 or other functional modules.

The wireless communication module 260 may provide a solution for wireless communication applied to the terminal device 100, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), bluetooth (bluetooth, BT), global Navigation Satellite System (GNSS), frequency Modulation (FM), near Field Communication (NFC), infrared (IR), and the like. The wireless communication module 260 may be one or more devices integrating at least one communication processing module. The wireless communication module 260 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on the electromagnetic wave signal, and transmits the processed signal to the processor 210. The wireless communication module 260 may also receive a signal to be transmitted from the processor 210, frequency-modulate and amplify the signal, and convert the signal into electromagnetic waves via the antenna 2 to radiate the electromagnetic waves.

In some embodiments, the antenna 1 of the terminal device 100 is coupled to the mobile communication module 250 and the antenna 2 is coupled to the wireless communication module 260, such that the terminal device 100 can communicate with a network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general Packet Radio Service (GPRS), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. GNSS may include Global Positioning System (GPS), global navigation satellite system (GLONASS), beidou satellite navigation system (BDS), quasi-zenith satellite system (QZSS), and/or Satellite Based Augmentation System (SBAS).

Terminal device 100 implements display functions via the GPU, display screen 294, and application processor, among others. The GPU is a microprocessor for image processing, and is connected to the display screen 294 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 294 is used for displaying images, displaying videos, receiving slide operations, and the like. The display screen 294 includes a display panel. The display panel may be a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-o led, a quantum dot light-emitting diode (QLED), or the like. In some embodiments, the terminal device 100 may include 1 or N display screens 294, N being a positive integer greater than 1.

The terminal device 100 may implement a shooting function through the ISP, the camera 293, the video codec, the GPU, the display screen 294, the application processor, and the like.

The ISP is used to process the data fed back by the camera 293. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in camera 293.

The camera 293 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to be converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the terminal device 100 may include 1 or N cameras 293, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the terminal device 100 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The terminal device 100 may support one or more video codecs. In this way, the terminal device 100 can play or record video in a plurality of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. The NPU can implement applications such as intelligent recognition of the terminal device 100, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 220 may be used to connect an external memory card, such as a Micro SD card, to extend the storage capability of the terminal device 100. The external memory card communicates with the processor 210 through the external memory interface 220 to implement a data storage function. For example, files such as music, video, etc. are saved in the external memory card.

Internal memory 221 may be used to store computer-executable program code, which includes instructions. The internal memory 221 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like. The storage data area may store data (such as audio data, a phonebook, etc.) created during use of the terminal device 100, and the like. In addition, the internal memory 221 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like. The processor 210 executes various functional applications of the terminal device 100 and data processing by executing instructions stored in the internal memory 221 and/or instructions stored in a memory provided in the processor.

The terminal device 100 may implement an audio function through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the headphone interface 270D, the application processor, and the like. Such as music playing, recording, etc.

Audio module 270 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. Audio module 270 may also be used to encode and decode audio signals. In some embodiments, audio module 270 may be disposed in processor 210, or some functional modules of audio module 270 may be disposed in processor 210.

The speaker 270A, also called a "horn", is used to convert electrical audio signals into sound signals. The terminal device 100 can listen to music through the speaker 270A or listen to a handsfree call.

The receiver 270B, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. When the terminal device 100 answers a call or voice information, voice can be answered by bringing the receiver 270B close to the human ear.

The microphone 270C, also referred to as a "microphone," is used to convert acoustic signals into electrical signals. When making a call or transmitting voice information, the user can input a voice signal to the microphone 270C by speaking near the microphone 270C through the mouth. The terminal device 100 may be provided with at least one microphone 270C. In other embodiments, the terminal device 100 may be provided with two microphones 270C, so as to implement a noise reduction function in addition to collecting sound signals. In other embodiments, the terminal device 100 may further include three, four, or more microphones 270C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.

The earphone interface 270D is used to connect a wired earphone. The headset interface 270D may be a USB interface 230, or may be a 3.5mm open mobile electronic device platform (OMTP) standard interface, a cellular telecommunications industry association (cellular telecommunications industry association) standard interface of the USA.

The pressure sensor 280A is used to sense a pressure signal, which can be converted into an electrical signal. In some embodiments, pressure sensor 280A may be disposed on display screen 294. The pressure sensor 280A can be of a wide variety, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor 280A, the capacitance between the electrodes changes. The terminal device 100 determines the intensity of the pressure from the change in the capacitance. When a touch operation is applied to the display screen 294, the terminal device 100 detects the intensity of the touch operation from the pressure sensor 280A. The terminal device 100 can also calculate the touched position from the detection signal of the pressure sensor 280A. In some embodiments, the touch operations that are applied to the same touch position but have different touch operation intensities may correspond to different operation instructions.

The gyro sensor 280B may be used to determine the motion attitude of the terminal device 100. In some embodiments, the angular velocity of terminal device 100 about three axes (i.e., the x, y, and z axes) may be determined by gyroscope sensor 280B. The gyro sensor 280B may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyro sensor 280B detects the shake angle of the terminal device 100, calculates the distance to be compensated for by the lens module according to the shake angle, and allows the lens to counteract the shake of the terminal device 100 through a reverse movement, thereby achieving anti-shake. The gyro sensor 280B may also be used for navigation, somatosensory gaming scenes.

The air pressure sensor 280C is used to measure air pressure. In some embodiments, the terminal device 100 calculates the altitude from the barometric pressure measured by the barometric pressure sensor 280C, and assists in positioning and navigation.

The magnetic sensor 280D includes a hall sensor. The terminal device 100 may detect the opening and closing of the flip holster using the magnetic sensor 280D. In some embodiments, when the terminal device 100 is a flip phone, the terminal device 100 may detect the opening and closing of the flip according to the magnetic sensor 280D. And then according to the detected opening and closing state of the leather sheath or the opening and closing state of the flip, the characteristics of automatic unlocking of the flip and the like are set.

The acceleration sensor 280E can detect the magnitude of the acceleration of the terminal device 100 in various directions (generally, three axes). The magnitude and direction of gravity can be detected when the terminal device 100 is stationary. The method can also be used for recognizing the posture of the terminal equipment, and is applied to application programs such as horizontal and vertical screen switching, pedometers and the like.

A distance sensor 280F for measuring distance. The terminal device 100 may measure the distance by infrared or laser. In some embodiments, the scene is photographed and the terminal device 100 may range using the distance sensor 280F to achieve fast focus.

The proximity light sensor 280G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal device 100 emits infrared light to the outside through the light emitting diode. The terminal device 100 detects infrared reflected light from a nearby object using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the terminal device 100. When insufficient reflected light is detected, the terminal device 100 can determine that there is no object near the terminal device 100. The terminal device 100 can utilize the proximity light sensor 280G to detect that the user holds the terminal device 100 close to the ear for talking, so as to automatically turn off the screen to achieve the purpose of saving power. Proximity light sensor 280G can also be used in holster mode, pocket mode automatically unlocking and locking the screen.

The ambient light sensor 280L is used to sense ambient light brightness. The terminal device 100 may adaptively adjust the brightness of the display screen 294 according to the perceived ambient light level. The ambient light sensor 280L may also be used to automatically adjust the white balance when taking a picture. The ambient light sensor 280L may also cooperate with the proximity light sensor 280G to detect whether the terminal device 100 is in a pocket for preventing accidental touches.

The fingerprint sensor 280H is used to collect a fingerprint. The terminal device 100 can utilize the collected fingerprint characteristics to realize fingerprint unlocking, access to an application lock, fingerprint photographing, fingerprint incoming call answering and the like.

The temperature sensor 280J is used to detect temperature. In some embodiments, the terminal device 100 executes a temperature processing strategy using the temperature detected by the temperature sensor 280J. For example, when the temperature reported by the temperature sensor 280J exceeds the threshold, the terminal device 100 performs a reduction in performance of the processor located near the temperature sensor 280J, so as to reduce power consumption and implement thermal protection. In other embodiments, the terminal device 100 heats the battery 242 when the temperature is below another threshold to avoid abnormal shutdown of the terminal device 100 due to low temperature. In other embodiments, when the temperature is below a further threshold, the terminal device 100 performs a boost on the output voltage of the battery 242 to avoid abnormal shutdown due to low temperature.

The touch sensor 280K is also referred to as a "touch device". The touch sensor 280K may be disposed on the display screen 294, and the touch sensor 280K and the display screen 294 form a touch screen, which is also called a "touch screen". The touch sensor 280K is used to detect a touch operation applied thereto or nearby. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display screen 294. In other embodiments, the touch sensor 280K may be disposed on the surface of the terminal device 100, different from the position of the display screen 294.

The bone conduction sensor 280M may acquire a vibration signal. In some embodiments, the bone conduction transducer 280M may acquire a vibration signal of the human voice vibrating a bone mass. The bone conduction sensor 280M may also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, bone conduction sensor 280M may also be disposed in a headset, integrated into a bone conduction headset. The audio module 270 may analyze a voice signal based on the vibration signal of the bone mass vibrated by the sound part acquired by the bone conduction sensor 280M, so as to implement a voice function. The application processor can analyze heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 280M, so as to realize the heart rate detection function.

The keys 290 include a power-on key, a volume key, etc. The keys 290 may be mechanical keys. Or may be touch keys. The terminal device 100 may receive a key input, and generate a key signal input related to user setting and function control of the terminal device 100.

The motor 291 may generate a vibration cue. The motor 291 can be used for both incoming call vibration prompting and touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 291 may also respond to different vibration feedback effects for touch operations on different areas of the display 294. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

Indicator 292 may be an indicator light that may be used to indicate a state of charge, a change in charge, or may be used to indicate a message, missed call, notification, etc.

The SIM card interface 295 is used to connect a SIM card. The SIM card can be attached to and detached from the terminal device 100 by being inserted into the SIM card interface 295 or being pulled out from the SIM card interface 295. The terminal device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 295 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. Multiple cards can be inserted into the same SIM card interface 295 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 295 may also be compatible with different types of SIM cards. The SIM card interface 295 may also be compatible with external memory cards. The terminal device 100 interacts with the network through the SIM card to implement functions such as communication and data communication. In some embodiments, the terminal device 100 employs eSIM, namely: an embedded SIM card. The eSIM card may be embedded in the terminal device 100 and cannot be separated from the terminal device 100.

The following describes the technical solution of the present application and how to solve the above technical problems in detail by specific embodiments. The following embodiments may be implemented independently or in combination, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 3 is a flowchart of a method for determining a network selection parameter offset value according to an embodiment of the present application. Referring to fig. 3, the method for determining the network selection parameter offset value includes the following steps:

step 301, the terminal device obtains a service type corresponding to a communication service executed by the first subscriber identity card.

The terminal device is provided with a first subscriber identity module (sim) card and a second subscriber identity module (sim) card, which share the same radio frequency module 130. The first subscriber identification card may be referred to as a primary card and the second subscriber identification card may be referred to as a secondary card.

Further, a plurality of applications are installed in the terminal device, and the applications are classified into a social application, a game application, a video application, a file transfer (upload or download) application, and the like according to the type of each application.

The corresponding relation between the service type and the application program can be stored in the terminal device in advance, and when the application program is operated on the terminal device and the communication service corresponding to the application program is executed by adopting the first subscriber identity module card, the application processor can search the service type of the communication service corresponding to the application program from the corresponding relation between the service type and the application program.

For example, for a social application program, such as WeChat, when the terminal device runs the social application program, a service type corresponding to a communication service of the social application program executed by the first user identification card may be determined as a voice service type; aiming at the game application program, when the terminal equipment runs the game application program, the service type corresponding to the communication service of the game application program executed by the first user identification card can be determined as the game service type; for the video application program, when the terminal equipment runs the video application program, determining the service type corresponding to the communication service of the video application program executed by the first user identification card as the video service type; when the terminal device runs a file transfer application program (such as a network disk application program, an application market program, and the like), the service type corresponding to the communication service of the file transfer application program executed by the first subscriber identity card can be determined as the file transfer service type.

Furthermore, the application processor may also accurately determine a service type corresponding to the communication service executed by the first subscriber identity module card according to information such as hardware resources called when the application program runs.

For example, when the terminal device runs a social application program and invokes a camera or a microphone to execute a communication service, it may be determined that a video call is executed by using a first subscriber identity module card, and at this time, a service type corresponding to the communication service executed by the first subscriber identity module card is a voice service type. Or, when the terminal device runs the social application program and calls the microphone but not the camera, it may be determined that the first subscriber identity module card is used to perform the voice call, and at this time, the service type corresponding to the communication service performed by the first subscriber identity module card is the voice service type.

The above is only an exemplary specific determination method for a service type corresponding to a communication service, and the embodiment of the present application does not limit this.

In the embodiment of the application, the service types include a voice service type, a game service type, a video service type and a file transfer service type. The voice service type may also be referred to as an Over The Top (OTT) audio/video type, where OTT refers to the situation where an internet company crosses an operator to develop various video and data services based on the open internet, such as an instant messaging service, and a communication service corresponding to the voice service type includes an audio/video call service; the communication service corresponding to the game service type refers to game fighting service; the communication service corresponding to the video service type refers to a video playing service; the file transmission service type refers to a file uploading service, a file downloading service and the like, for example, downloading or updating an application program by using an application market, or uploading or downloading a file by using a cloud disk.

Step 302, when the service type is a voice service type, the terminal device queries a first network selection parameter offset value corresponding to the voice service type.

In this embodiment of the present application, a corresponding relationship between each service type and a network selection parameter is pre-stored, and when the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity card is a voice service type, the application processor may search for a first network selection parameter offset value corresponding to the voice service type from the corresponding relationship between the service type and the network selection parameter.

Or when the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity module card is the voice service type, the application processor sends the voice service type identifier corresponding to the voice service type to the modem, and the modem searches for a first network selection parameter offset value corresponding to the voice service type from the corresponding relation between the service type and the network selection parameter according to the voice service type identifier.

Step 303, when the service type is the game service type, the terminal device queries a second network selection parameter offset value corresponding to the game service type.

When the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity module card is the game service type, the application processor may search for a second network selection parameter offset value corresponding to the game service type from the corresponding relationship between the service type and the network selection parameter.

Or when the application processor determines that the service type corresponding to the communication service executed by the first user identification card is the game service type, the application processor sends the game service type identifier corresponding to the game service type to the modem, and the modem searches for a second network selection parameter offset value corresponding to the game service type from the corresponding relation between the service type and the network selection parameter according to the game service type identifier.

Step 304, when the service type is the video service type, the terminal device queries a third network selection parameter offset value corresponding to the video service type.

When the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity card is the video service type, the application processor may search for a third network selection parameter offset value corresponding to the video service type from the corresponding relationship between the service type and the network selection parameter.

Or when the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity module card is the video service type, the application processor sends the video service type identifier corresponding to the video service type to the modem, and the modem searches for a third network selection parameter offset value corresponding to the video service type from the corresponding relation between the service type and the network selection parameter according to the video service type identifier.

Step 305, when the service type is a file transmission service type, the terminal device queries a fourth network selection parameter offset value corresponding to the file transmission service type.

When the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity card is the file transfer service type, the application processor may search for a fourth network selection parameter offset value corresponding to the file transfer service type from the corresponding relationship between the service type and the network selection parameter.

Or when the application processor determines that the service type corresponding to the communication service executed by the first subscriber identity module is the file transmission service type, the application processor sends a file transmission service type identifier corresponding to the file transmission service type to the modem, and the modem searches for a fourth network selection parameter offset value corresponding to the file transmission service type from the corresponding relation between the service type and the network selection parameter according to the file transmission service type identifier.

The first network selection parameter deviant, the second network selection parameter deviant, the third network selection parameter deviant and the fourth network selection parameter deviant all comprise first class parameter deviant and/or second class parameter deviant. The first type of parameter offset value comprises at least one of a search period offset value, a first reselection threshold offset value of a candidate cell, a first handover threshold offset value of a candidate cell, and a reselection time parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for the serving cell and a second handover threshold offset value for the serving cell.

A cell, which may also be referred to as a cellular cell, refers to an area covered by a base station or a portion of a base station (e.g., a sector antenna, etc.) in a cellular mobile communication system, and terminal devices in the covered area can communicate with the base station through a wireless channel. For the second subscriber identity card in the embodiment of the present application, the serving cell refers to a cell where the second subscriber identity card currently resides, and the candidate cell refers to a cell adjacent to the serving cell where the second subscriber identity card resides.

In some embodiments, the network selection parameter offset values corresponding to the service types are different, that is, the first network selection parameter offset value, the second network selection parameter offset value, the third network selection parameter offset value, and the fourth network selection parameter offset value include at least partially unequal offset values.

The cell change method according to the embodiment of the present application is described below with reference to four different communication services executed by the first subscriber identity card. The four traffic types of communication services include: voice service type, game service type, video service type, and file transfer service type.

In a first optional implementation manner, for a scenario where the service type of the communication service is a voice service type, in this case, when the second subscriber identity card performs a cell change, the main involved processes include cell search, cell reselection, and cell handover.

Therefore, if the terminal device needs to perform cell search, after step 302, steps 401 to 403 may be performed in sequence; if the terminal device needs to perform cell reselection, after step 302, steps 501 to 506 may be sequentially performed; if the terminal device needs to perform cell handover, after step 302, steps 601 to 605 may be performed sequentially.

Referring to fig. 4, a flowchart of a cell search method provided in an embodiment of the present application is shown, where when a second subscriber identity card is used for cell search, the method may include the following steps:

step 401, the application processor sends a first network selection parameter offset value to the modem, where the first network selection parameter offset value includes a search period offset value corresponding to a voice service type.

In this embodiment of the present application, after the application processor searches for a first network selection parameter offset value corresponding to the voice service type from the corresponding relationship between the service type and the network selection parameter, the application processor sends the first network selection parameter offset value to the modem, where the first network selection parameter offset value includes a search period offset value corresponding to the voice service type.

Step 402, the modem uses the sum of the initial search period and the search period offset value corresponding to the voice service type as the target search period corresponding to the voice service type.

In the embodiment of the application, an initial search period is preset in the modem, and after receiving a search period offset value corresponding to a voice service type sent by the application processor, the modem calculates a sum of the initial search period and the search period offset value corresponding to the voice service type to obtain a target search period corresponding to the voice service type. Of course, it is understood that the initial search period may also be sent by the network device to the modem via the rf module.

Illustratively, the initial search period is Y ₀ The offset value of the search period corresponding to the voice service type is delta Y ₁ The target search period corresponding to the voice service type is Y ₁ Then Y is ₁ ＝Y ₀ +ΔY ₁ Search period offset value delta Y corresponding to voice service type ₁ If the number is positive, the target search period Y corresponding to the voice service type is obtained ₁ Greater than the initial search period Y ₀ . For example, the initial search period is Y ₀ Is 60s,. DELTA.Y ₁ Is 30s, then Y ₁ Is 90s.

Step 403, the modem executes the cell search operation according to the target search period corresponding to the voice service type.

For example, when the voice service type corresponds to the target search period Y ₁ When the time is 90s, when the first subscriber identity card executes the voice service, the second subscriber identity card performs cell search every 90s.

If a second subscriber identity card in the terminal device wants to access the network, it needs to go through a cell search process, which is not only performed when the terminal device is turned on, but actually, in order to support mobility (mobility), the terminal device may continuously search for a candidate cell, obtain frequency and symbol synchronization with the candidate cell, and estimate the signal quality of the candidate cell.

The process of cell search mainly comprises the following four steps:

first, a terminal device obtains a Physical Cell Identity (PCI) of a cell from a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

In the second step, the terminal equipment receives a downlink Reference Signal (RS) for keeping synchronization with the base station in time and frequency.

And thirdly, the terminal equipment decodes a Physical Broadcast Channel (PBCH) to obtain a Master Information Block (MIB) which contains information such as a System Frame Number (SFN) and a downlink system bandwidth.

The fourth step: the terminal device decodes a Physical Downlink Shared Channel (PDSCH) to obtain a System Information Block (SIB).

After the terminal equipment acquires the information of SIB, MIB and the like, S criterion is needed to judge whether the searched cell meets the residing condition, and the S criterion requires the residing condition of the cell to be S _rxlev >0. Wherein S is _rxlev ＝Q _rxlevmeas –(Q _rxlevmin +Q _{rxlevminoffset} )–P _compensation 。

S _rxlev Indicating a cell selection reception level value, Q _rxlevmeas Reference Signal Receiving Power (RSRP) representing the received signal, Q _rxlevmin Representing the minimum power value, Q, of the received signal _{rxlevminoffset} Q representing when periodically searching for higher priority PLMNs while residing under a Visited Public Land Mobile Network (VPLMN) _rxlevmin Offset of (2), P _compensation The value is max (P) _EMAX P _UMAX 0) of which，P _EMAX Representing the maximum transmit power level, P, of the terminal device during uplink transmission _UMAX Representing the maximum radio frequency output power of the terminal device. Generally, Q _{rxlevminoffset} And P _compensation Is 0, the above formula can be simplified to S _rxlev ＝Q _rxlevmeas –Q _rxlevmin 。

In the related art, the modem is according to an initial search period Y ₀ The cell search is carried out, so that more radio frequency resources are occupied when the second user identification card carries out the cell search in unit time, and therefore, by improving the search period of the second user identification card carrying out the cell search, the search frequency of the second user identification card carrying out the cell search is reduced, and the radio frequency resources occupied when the second user identification card carries out the cell search in unit time are reduced.

When the candidate cell searched by the second subscriber identity card meets the residence condition, the signal quality of the serving cell and the candidate cell needs to be compared, so as to determine whether to perform cell handover (handover) or cell re-selection (cell-selection).

Cell reselection refers to a process of reselecting a serving cell because of factors such as position change, signal change and the like when a second user identification card of the terminal equipment is in an idle state; the cell switching refers to a process of switching a service cell when a second subscriber identity module card of the terminal equipment is in a connected state. The service state of the second subscriber identity module card can be divided into an idle state and a connection state, the idle state means that the second subscriber identity module card does not currently perform communication services such as voice service and file transfer service, and the connection state means that the second subscriber identity module card is performing communication services such as voice service and file transfer service.

Referring to fig. 5, a flowchart of a cell reselection method provided in this embodiment of the present application may include the following steps when a second subscriber identity card is used for cell reselection:

step 501, the application processor sends a first network selection parameter offset value to the modem, where the first network selection parameter offset value includes a first reselection threshold offset value, a reselection time parameter offset value, and a second reselection threshold offset value corresponding to the voice service type.

When the candidate cell and the serving cell have different priorities during cell reselection, the network selection parameters are also different. Therefore, for the case that the priority of the candidate cell is higher than that of the serving cell, the first reselection threshold offset value corresponding to the voice service type is Δ R ₁₁ The reselection time parameter offset value corresponding to the voice service type is delta T ₁₁ (ii) a Aiming at the condition that the priority of the candidate cell is the same as that of the serving cell, the first reselection threshold offset value corresponding to the voice service type is delta R ₁₂ The reselection time parameter offset value corresponding to the voice service type is delta T ₁₂ (ii) a And aiming at the condition that the priority of the candidate cell is lower than that of the service cell, the first reselection threshold offset value corresponding to the voice service type is delta R ₁₃ The reselection time parameter offset value corresponding to the voice service type is delta T ₁₃ The second reselection threshold offset value corresponding to the voice service type is delta R ₁₄ 。

Wherein the first reselection threshold offset value is a positive number, that is, the first reselection threshold offset value Δ R corresponding to the high-priority candidate cell ₁₁ And a first reselection threshold offset value DeltaR corresponding to the candidate cell with the same priority ₁₂ And a first reselection threshold offset value Δ R corresponding to a low priority candidate cell ₁₃ Are all positive numbers. The reselection time parameter offset value is also positive, that is, the reselection time parameter offset value Δ T corresponding to the high priority candidate cell ₁₁ And a reselection time parameter offset value Δ T corresponding to the candidate cell of the same priority ₁₂ And a reselection time parameter offset value Δ T corresponding to the low priority candidate cell ₁₃ Are all positive numbers. The second reselection threshold offset value is positive, that is, the second reselection threshold offset value corresponding to the low priority candidate cell is Δ R ₁₄ Is a positive number.

In step 502, a modem receives a system message sent by a network device, where the system message includes a first initial reselection threshold, an initial reselection time parameter, and a second initial reselection threshold.

In this embodiment, the network device sends a system message to the modem through the antenna and the rf module, where the system message includes parameter information of cell reselection, which is a first initial reselection threshold, an initial reselection time parameter, and a second initial reselection threshold, respectively.

If the system message is sent by a candidate cell with a higher priority than the serving cell, the first initial reselection threshold is threshXHigh, and the initial reselection time parameter is T ₁₀ . If the system message is sent by a candidate cell with the priority equal to that of the serving cell, the first initial reselection threshold is threshXequal, and the initial reselection time parameter is T ₂₀ . If the system message is sent by a candidate cell with a lower priority than the serving cell, the first initial reselection threshold is threshXLow, and the initial reselection time parameter is T ₃₀ And the second initial reselection threshold is ThrshServLow.

In step 503, the modem uses the sum of the first initial reselection threshold and the first reselection threshold offset value corresponding to the voice service type as the first target reselection threshold corresponding to the voice service type.

Aiming at the candidate cell with higher priority than the serving cell, the first target reselection threshold corresponding to the voice service type is ThreshXHigh + delta R ₁₁ (ii) a Aiming at the candidate cell with the priority equal to the serving cell, the first target reselection threshold corresponding to the voice service type is ThreshXequal + Delta R ₁₂ (ii) a For candidate cells with lower priority than the serving cell, the first target reselection threshold corresponding to the voice service type is threshXLow + Δ R ₁₃ 。

For example, for a candidate cell with higher priority than the serving cell, the first initial reselection threshold ThreshXHigh is-94 dBm, and the first reselection threshold offset value Δ R corresponding to the voice service type ₁₁ And the target reselection threshold is 10dBm, the first target reselection threshold corresponding to the voice service type is-84 dBm. Aiming at the candidate cell with the priority equal to the serving cell, the first initial reselection threshold ThreshXequal is 0dBm, and the first reselection threshold deviant value corresponding to the voice service type is delta R ₁₂ If the target reselection threshold is 5dBm, the first target reselection threshold corresponding to the voice service type is 5dBm; for candidate cells with lower priority than the serving cell, firstThe initial reselection threshold ThreshXLow is-94 dBm, and the first reselection threshold offset value corresponding to the voice service type is DeltaR ₁₃ And the reselection threshold is 15dBm, the first target reselection threshold corresponding to the voice service type is-79 dBm.

In step 504, the modem uses the sum of the initial reselection time parameter and the reselection time parameter offset value corresponding to the voice service type as the target reselection time parameter corresponding to the voice service type.

Aiming at the candidate cell with higher priority than the serving cell, the target reselection time parameter T corresponding to the voice service type ₁₁ ＝T ₁₀ +ΔT ₁₁ (ii) a Aiming at the candidate cell with the priority equal to the service cell, the target reselection time parameter T corresponding to the voice service type ₁₂ ＝T ₂₀ +ΔT ₁₂ (ii) a Aiming at the candidate cell with the priority lower than that of the serving cell, the target reselection time parameter T corresponding to the voice service type ₁₃ ＝T ₃₀ +ΔT ₁₃ 。

Step 505, the modem uses the difference between the second initial reselection threshold and the second reselection threshold offset value corresponding to the voice service type as the second target reselection threshold corresponding to the voice service type.

Aiming at the candidate cell with the priority lower than that of the service cell, the second target reselection threshold corresponding to the voice service type is ThrshServLow-delta R ₁₄ 。

Step 506, the modem executes the cell reselection decision for the second subscriber identity card according to the first target reselection threshold, the target reselection time parameter and the second target reselection threshold corresponding to the voice service type.

When the second subscriber identity module card is in an idle state, S is calculated according to the measurement result _rxlev Judging whether to perform reselection measurement on the candidate cell, wherein the reselection measurement is divided into the following two conditions:

in the first case, reselection measurements are always performed on the candidate cell when the candidate cell has a higher priority than the serving cell.

In the second case, when the priority of the candidate cell is lower than or equal to the serving cell, the two cases are divided into the same frequency case and the different frequency case: when the candidate is smallIf the cell and the serving cell are the same frequency cell, S of the serving cell _rxlev ≤S _IntraSearch When the reselection measurement of the candidate cell is started, S _IntraSearch Representing a same-frequency measurement starting threshold; same frequency measurement starting threshold S _IntraSearch May be-70 dBm; if S of the serving cell is the inter-frequency cell when the candidate cell and the serving cell are the inter-frequency cells _rxlev ≤S _{nonIntraSearch} When a reselection measurement of a candidate cell is initiated, S _{nonIntraSearch} Indicating a pilot frequency measurement start threshold, a pilot frequency measurement start threshold S _{nonIntraSearch} May be-100 dBm.

The inter-frequency cell refers to that the frequencies of the serving cell and the candidate cell are the same, and the inter-frequency cell refers to that the frequencies of the serving cell and the candidate cell are different. After the signal quality of the candidate cell is measured, whether cell reselection needs to be performed is also classified into three cases:

in the first case, for a candidate cell with higher priority than the serving cell, if the second subscriber identity card is to be reselected from the serving cell to the candidate cell, it needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of candidate cell _rxlev >ThreshXHigh+ΔR ₁₁ And duration is greater than T ₁₁ 。

In a second case, for a candidate cell with the same frequency or priority as the serving cell, if the second subscriber identity card is to be reselected from the serving cell to the candidate cell, it needs to satisfy the following conditions: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. r of candidate cell _t R with serving cell _s The difference is greater than ThreshXequol + DeltaR ₁₂ And duration is greater than T ₁₂ 。

Wherein R of the candidate cell _t ＝Q _meas,t -Q _offset R of serving cell _s ＝Q _meas,s +Q _hyst 。Q _meas,t RSRP value, Q, representing candidate cell _offset A cell offset value representing a candidate cell, a cell offset value representing a cell offset between a serving cell and the candidate cell, and a Q for controlling the ease of cell reselection _offset The larger theThe harder it is to reselect to the candidate cell; q _meas,s RSRP value, Q, representing serving cell _hyst The cell reselection hysteresis value is represented and used for adjusting the difficulty degree of cell reselection and reducing ping-pong effect, and under the condition of certain other parameters, the cell reselection hysteresis value is increased, so that the difficulty degree of cell reselection can be increased.

In a third case, for a candidate cell with a lower priority than the serving cell, if the second subscriber identity card is to be reselected from the serving cell to the candidate cell, it needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of serving cell _rxlev ＜ThrshServLow-ΔR ₁₄ S of candidate cell _rxlev >ThreshXLow+ΔR ₁₃ And duration is greater than T ₁₃ 。

In the related art, for a candidate cell having a higher priority than the serving cell, the modem is configured to select a first initial reselection threshold ThreshXHigh and an initial reselection time parameter T ₁₀ Performing a decision for cell reselection to the second subscriber identity card; the modem in the embodiment of the present application is according to the first target reselection threshold threshXHigh + Δ R ₁₁ And a target reselection time parameter T ₁₁ A decision for cell reselection to the second subscriber identity card is performed.

Correspondingly, for the candidate cell with the priority equal to the serving cell, the modem is according to the first initial reselection threshold threshXequal and the initial reselection time parameter of T ₂₀ Performing a decision for cell reselection to the second subscriber identity card; the modem in the embodiment of the present application is according to the first target reselection threshold threshXequol + Δ R ₁₂ And a target reselection time parameter T ₁₂ And executing the cell reselection judgment aiming at the second subscriber identity card.

Correspondingly, for the candidate cell with the priority lower than the serving cell, the modem is according to the first initial reselection threshold threshXlow and the initial reselection time parameter is T ₃₀ And the second initial reselection threshold is ThrshServLow, and the judgment of cell reselection aiming at the second subscriber identity card is executed; the modem in the embodiment of the present application is according toFirst target reselection threshold ThreshXLow + Δ R ₁₃ Target reselection time parameter T ₁₃ And a second target reselection threshold ThrshServLow- Δ R ₁₄ And executing the cell reselection judgment aiming at the second subscriber identity card.

If the priority of the candidate cell is higher than or equal to the priority of the serving cell, the difficulty of reselecting the candidate cell by the second subscriber identity card is improved by improving the reselection threshold and the reselection time parameter of the second subscriber identity card, so that the occupation of radio frequency resources caused by the reselection operation of the second subscriber identity card can be reduced. If the priority of the candidate cell is lower than that of the service cell, the reselection threshold (ThrshServerLow-Delta R) when the second subscriber identity card leaves from the service cell is reduced by increasing the reselection threshold and the reselection time parameter when the second subscriber identity card reselects to the candidate cell and reducing the reselection threshold (ThrshServerLow-Delta R) when the second subscriber identity card leaves from the service cell ₁₄ ) The difficulty of the second subscriber identity card in reselecting the candidate cell is improved, and therefore the occupation of radio frequency resources caused by the reselection operation of the second subscriber identity card can be reduced.

It is to be understood that the first network selection parameter offset value may include any one or both of a first reselection threshold offset value, a reselection time parameter offset value, and a second reselection threshold offset value corresponding to the voice service type; accordingly, when the initial network selection parameter is adjusted, any one or both of the first initial reselection threshold, the initial reselection time parameter and the second initial reselection threshold may also be adjusted.

If only the first initial reselection threshold is adjusted in the embodiment of the present application, in the above embodiment, step 504 and step 505 do not need to be executed, and in step 506, the cell reselection decision for the second subscriber identity card is executed according to the first target reselection threshold, the initial reselection time parameter, and the second initial reselection threshold corresponding to the voice service type.

If only the initial reselection time parameter is adjusted in the embodiment of the present application, in the above embodiment, step 503 and step 505 do not need to be executed, and in step 506, a cell reselection decision for the second subscriber identity card is executed according to the first initial reselection threshold, the target reselection time parameter, and the second initial reselection threshold corresponding to the voice service type.

If only the second initial reselection threshold is adjusted in the embodiment of the present application, in the above embodiment, step 503 and step 504 may not be required to be executed, and in step 506, the cell reselection decision for the second subscriber identity card is executed according to the first initial reselection threshold, the initial reselection time parameter, and the second target reselection threshold corresponding to the voice service type.

Correspondingly, when the initial network selection parameter is adjusted, if only any two of the first initial reselection threshold, the initial reselection time parameter and the second initial reselection threshold are adjusted, the step corresponding to the initial network selection parameter which does not need to be adjusted does not need to be executed.

Referring to fig. 6, a flowchart of a cell handover method provided in this embodiment of the present application is shown, where when a second subscriber identity card is used for cell handover, the method may include the following steps:

step 601, the application processor sends a first network selection parameter deviant to the modem, and the first network selection parameter deviant comprises a first switching threshold deviant and a second switching threshold deviant corresponding to the voice service type.

When the second subscriber identity card of the terminal device is in a connected state, if the terminal device moves from one cell to another cell, a cell switching operation needs to be performed in order to ensure uninterrupted communication of the second subscriber identity card.

Specifically, the network device may periodically issue measurement control to the terminal device, and configure the measurement type of the second subscriber identity card through a Radio Resource Control (RRC) reconfiguration message; the modem carries out measurement configuration on the service cell connected with the second user identification card according to measurement control issued by network setting; when the configured reporting condition is met, the modem reports a measurement report to the network equipment; and the network equipment judges according to the measurement report and determines whether to switch the serving cell connected with the second subscriber identity card.

The measurement reporting mechanism of the modem is divided into periodic measurement reporting and event measurement reporting, and the event-based measurement reporting can reduce the reporting times of the terminal equipment and ensure that the second subscriber identity module card can be switched in time, so the embodiment of the application can adopt the event-based measurement reporting.

And reporting the measurement based on the event, wherein the measurement reporting event comprises an A1 event, an A2 event, an A3 event, an A4 event, an A5 event, a B1 event and a B2 event.

The A1 event refers to the serving cell's signal quality being greater than the start-up measurement threshold for turning off ongoing inter-frequency/inter-system measurements. The A2 event means that the signal quality of the serving cell is less than or equal to an initial measurement threshold for turning on measurements of the inter-frequency/inter-system. The A3 event refers to a difference between the signal quality of the candidate cell and the signal quality of the serving cell, which is greater than a first handover threshold, and mainly aims at an inter-system co-frequency measurement event, that is, the candidate cell and the serving cell belong to the same network system and have the same frequency. The A4 event refers to that the signal quality of the candidate cell is greater than the second handover threshold, and mainly aims at an inter-system inter-frequency measurement event, that is, the candidate cell and the serving cell belong to the same network system and have different frequencies. The A5 event refers to that the signal quality of the serving cell is less than a third switching threshold, and the signal quality of the candidate cell is greater than a fourth switching threshold, and the signal quality of the candidate cell is directed to an intra-frequency measurement event and an inter-frequency measurement event between systems.

The B1 event refers to the candidate cell having a signal quality greater than the fifth handover threshold, and is mainly directed to a measurement event of a different system, that is, the candidate cell and the serving cell belong to different network systems. The B2 event means that the signal quality of the serving cell is less than the sixth handover threshold and the signal quality of the candidate cell is greater than the seventh handover threshold, which is mainly for measurement events of different systems.

Generally, the handover of the same network system will use either an A3 event or an A4 event, while the handover of a different network system will use either a B1 event or a B2 event. Before reporting an A4 event, an A5 event, a B1 event, and a B2 event, the A2 event needs to be triggered first, that is, when the signal quality of the serving cell is less than or equal to the starting measurement threshold, the A2 event is triggered, and the terminal device starts to perform inter-frequency or inter-system measurement.

It should be noted that the same network system refers to a system with the same network system, and different network systems refer to systems with different network systems. The network standard refers to a network type, which includes network standards such as 2G, 3G, 4G, and 5G.

Therefore, when the types of the measurement control events issued by the network device to the terminal device are different during cell handover, the corresponding first handover threshold offset value and the second handover threshold offset value are also different.

Aiming at the A3 event, the first switching threshold deviation value corresponding to the voice service type is delta H ₁₁ (ii) a Aiming at the A4 event, the first switching threshold deviation value corresponding to the voice service type is delta H ₁₂ (ii) a Aiming at the A5 event, the first switching threshold deviant value corresponding to the voice service type is delta H ₁₃ The second switching threshold deviant value corresponding to the voice service type is delta H ₁₄ (ii) a Aiming at the B1 event, the first switching threshold deviation value corresponding to the voice service type is delta H ₁₅ (ii) a Aiming at the B2 event, the first switching threshold deviation value corresponding to the voice service type is delta H ₁₆ The second switching threshold deviant value corresponding to the voice service type is delta H ₁₇ 。

Wherein the first switching threshold deviation value is a positive number, that is, the first switching threshold deviation value Δ H corresponding to the A3 event ₁₁ First switching threshold offset value delta H corresponding to A4 event ₁₂ First switching threshold offset value delta H corresponding to A5 event ₁₃ First switching threshold offset value delta H corresponding to B1 event ₁₅ And a first handover threshold offset value Δ H corresponding to the B2 event ₁₆ Are all positive numbers. The second handover threshold offset value is a positive number, i.e. the second handover threshold offset value Δ H corresponding to the A5 event ₁₄ And a second handover threshold offset value Δ H corresponding to the B2 event ₁₇ Are all positive numbers.

In step 602, the modem receives an RRC reconfiguration message sent by the network device, where the RRC reconfiguration message includes a first initial handover threshold and a second initial handover threshold.

The network equipment sends RRC reconfiguration information to the modem through the antenna and the radio frequency module, wherein the RRC reconfiguration information comprises a first initial switching threshold and a second initial switching threshold.

Wherein, the first initial switching threshold corresponding to the A3 event is H ₁₀ The first initial switching threshold corresponding to the A4 event is H ₂₀ The first initial switching threshold corresponding to the A5 event is H ₃₀ The second initial switching threshold corresponding to the A5 event is H ₄₀ The first initial switching threshold corresponding to the B1 event is H ₅₀ And the first initial switching threshold corresponding to the B2 event is H ₆₀ And the second initial switching threshold corresponding to the B2 event is H ₇₀ 。

Step 603, the modem uses the sum of the first initial switching threshold and the first switching threshold offset value corresponding to the voice service type as the first target switching threshold corresponding to the voice service type.

Aiming at the A3 event, a first target switching threshold H corresponding to the voice service type ₁₁ ＝H ₁₀ +ΔH ₁₁ (ii) a Aiming at A4 event, a first target switching threshold H corresponding to voice service type ₁₂ ＝H ₂₀ +ΔH ₁₂ (ii) a Aiming at the A5 event, a first target switching threshold H corresponding to the voice service type ₁₃ ＝H ₃₀ +ΔH ₁₃ (ii) a Aiming at the B1 event, a first target switching threshold H corresponding to the voice service type ₁₅ ＝H ₅₀ +ΔH ₁₅ (ii) a Aiming at the B2 event, a first target switching threshold H corresponding to the voice service type ₁₆ ＝H ₆₀ +ΔH ₁₆ 。

In step 604, the modem uses the difference between the second initial switching threshold and the second switching threshold offset value corresponding to the voice service type as the second target switching threshold corresponding to the voice service type.

Aiming at the A5 event, the second target switching threshold H corresponding to the voice service type ₁₄ ＝H ₄₀ -ΔH ₁₄ (ii) a Aiming at the B2 event, the second target switching threshold H corresponding to the voice service type ₁₇ ＝H ₇₀ -ΔH ₁₇ 。

Step 605, the modem executes the decision of reporting the measurement event for the second subscriber identity card according to the first target switching threshold and the second target switching threshold corresponding to the voice service type.

For the A3 event, when the difference value between the signal quality of the candidate cell and the signal quality of the serving cell is larger than the first target switching threshold H corresponding to the A3 event ₁₁ At this time, the modem reports a measurement report for the A3 event of the second subscriber identity card to the network device. First target switching threshold H corresponding to A3 event ₁₁ Also referred to as a first switching threshold.

Aiming at the A4 event, when the signal quality of the candidate cell is greater than a first target switching threshold H corresponding to the A4 event ₁₂ The modem reports a measurement report for the A4 event of the second subscriber identity card to the network device. First target switching threshold H corresponding to A4 event ₁₂ Which may also be referred to as a second handover threshold.

Aiming at the A5 event, when the signal quality of the serving cell is less than a second target switching threshold H corresponding to the A5 event ₁₄ And the signal quality of the candidate cell is greater than the first target switching threshold H corresponding to the A5 event ₁₃ At this time, the modem reports a measurement report for the A5 event of the second subscriber identity card to the network device. First target switching threshold H corresponding to A5 event ₁₃ Also called a fourth switching threshold, a second target switching threshold H corresponding to the A5 event ₁₄ Which may also be referred to as a third handover threshold.

Aiming at the B1 event, when the signal quality of the candidate cell is greater than a first target switching threshold H corresponding to the B1 event ₁₅ And the modem reports a measurement report of the B1 event aiming at the second user identification card to the network equipment. First target switching threshold H corresponding to B1 event ₁₅ Which may also be referred to as a fifth handover threshold.

Aiming at the B2 event, when the signal quality of the serving cell is less than a second target switching threshold H corresponding to the B2 event ₁₇ And the signal quality of the candidate cell is greater than the first target switching threshold H corresponding to the B2 event ₁₆ The modem reports a measurement report for the B2 event of the second subscriber identity card to the network device. First target switching threshold H corresponding to B2 event ₁₆ Can also be usedReferred to as a seventh switching threshold, a second target switching threshold H corresponding to the B2 event ₁₇ Which may also be referred to as a sixth handover threshold.

After the modem reports the measurement report of the corresponding event to the network device, the network device may make a decision according to the measurement report to determine whether to switch the serving cell connected to the second subscriber identity card.

In the related art, for the A3 event, the modem is according to the first initial switching threshold H corresponding to the A3 event ₁₀ Executing the judgment reported aiming at the A3 event; the modem in the embodiment of the present application is according to the first target switching threshold H corresponding to the A3 event ₁₁ And executing the judgment aiming at the A3 event report. Therefore, the switching threshold of the second subscriber identity module card to the candidate cell is improved, the difficulty of switching the second subscriber identity module card to the candidate cell is improved, and the occupation of radio frequency resources caused by the switching operation of the second subscriber identity module card can be reduced.

In the related art, for an A4 event, the modem is according to a first initial switching threshold H corresponding to the A4 event ₂₀ Executing the judgment reported aiming at the A4 event; the modem in the embodiment of the present application is based on the first target switching threshold H corresponding to the A4 event ₁₂ And executing the judgment aiming at the A4 event report. Therefore, the switching threshold of the second subscriber identity module card to the candidate cell is improved, the difficulty of switching the second subscriber identity module card to the candidate cell is improved, and the occupation of radio frequency resources caused by the switching operation of the second subscriber identity module card can be reduced.

In the related art, for the A5 event, the modem is according to the first initial switching threshold H corresponding to the A5 event ₃₀ And a second initial switching threshold H corresponding to the A5 event ₄₀ Executing the judgment reported aiming at the A5 event; the modem in the embodiment of the present application is according to the first target switching threshold H corresponding to the A5 event ₁₃ And a second target switching threshold H corresponding to the A5 event ₁₄ And executing the judgment aiming at the A5 event report. It can be seen that the embodiments of the present application improveThe switching threshold of the second user identification card to the candidate cell is reduced, and the switching threshold (namely the second target switching threshold H) when the second user identification card leaves from the service cell is reduced ₁₄ ) The difficulty of switching the second subscriber identity card to the candidate cell is improved, and therefore the occupation of radio frequency resources caused by the switching operation of the second subscriber identity card can be reduced.

In the related art, for a B1 event, the modem is according to a first initial handover threshold H corresponding to the B1 event ₅₀ Executing the judgment reported aiming at the B1 event; the modem in the embodiment of the present application is switched according to the first target switching threshold H corresponding to the B1 event ₁₅ And executing the judgment aiming at the report of the B1 event. Therefore, the switching threshold of the second subscriber identity module card to the candidate cell is improved, the difficulty of switching the second subscriber identity module card to the candidate cell is improved, and the occupation of radio frequency resources caused by the switching operation of the second subscriber identity module card can be reduced.

In the related art, for the B2 event, the modem is according to the first initial switching threshold H corresponding to the B2 event ₆₀ And a second initial handover threshold H corresponding to the B2 event ₇₀ Executing the judgment reported aiming at the B2 event; the modem in the embodiment of the present application is based on the first target handover threshold H corresponding to the B2 event ₁₆ And a second target switching threshold H corresponding to the B2 event ₁₇ And executing the judgment aiming at the report of the B2 event. It can be seen that, in the embodiments of the present application, the handover threshold for the second subscriber identity card to handover to the candidate cell is increased, and the handover threshold (i.e. the second target handover threshold H) when the second subscriber identity card leaves from the serving cell is reduced ₁₇ ) The difficulty of switching the second subscriber identity card to the candidate cell is improved, and therefore the occupation of radio frequency resources caused by the switching operation of the second subscriber identity card can be reduced.

It is understood that the first network selection parameter offset value may include any one of a first handover threshold offset value and a second handover threshold offset value corresponding to the voice service type; correspondingly, when the initial network selection parameter is adjusted, any one of the first initial switching threshold and the second initial switching threshold can be adjusted.

If the embodiment of the present application only adjusts the first initial handover threshold, the step 604 may not be executed in the above embodiment, and in the step 605, the decision on the measurement event report of the second subscriber identity card is executed according to the first target handover threshold and the second initial handover threshold corresponding to the voice service type.

If the embodiment of the present application only adjusts the second initial handover threshold, the above embodiment may not need to perform step 603, and in step 605, the decision that the measurement event is reported for the second subscriber identity card is performed according to the first initial handover threshold and the second target handover threshold corresponding to the voice service type.

It should be noted that, for the three processes of cell search, cell reselection, and cell handover, the application processor may send the search period offset value, the first reselection threshold offset value, the reselection time parameter offset value, the second reselection threshold offset value, the first handover threshold offset value, and the second handover threshold offset value included in the first network selection parameter offset value to the modem at one time. Alternatively, the application processor may also send a part of the offset values of the first network selection parameter offset value to the modem according to the current state of the second subscriber identity card, for example, when the second subscriber identity card is in an idle state, the first reselection threshold offset value, the reselection time parameter offset value, and the second reselection threshold offset value may be sent to the modem, and when the second subscriber identity card is in a connected state, the first handover threshold offset value and the second handover threshold offset value may be sent to the modem.

In addition, after the modem receives the first network selection parameter offset value sent by the application processor, the modem returns response information to the application processor, wherein the response information indicates that the first network selection parameter offset value is received.

In this embodiment, when the service type corresponding to the communication service executed by the first subscriber identity card is a voice service type, if the modem responds to a paging message sent by the network device to the second subscriber identity card, the modem interrupts the communication service executed by the first subscriber identity card.

Aiming at the scene that the service type of the communication service is the voice service type, the embodiment of the application can directly adjust the initial network selection parameter according to the voice service type, and can also determine whether to adjust the initial network selection parameter according to the setting option.

As shown in fig. 7, the service priority order of the first subscriber identity card and the second subscriber identity card may be determined through a service priority selection interface 70 displayed by the terminal device.

In some embodiments, when the terminal device receives a triggering operation of the user, the service priority selection interface 70 may be displayed, and the service priority selection interface 70 may be specifically located under the SIM card management interface. The service priority selection interface 70 comprises a first option 71, a second option 72 and a third option 73. The first option 71 is used to indicate that the service of the first subscriber identity card is preferred, that is, the voice service of the SIM card 1 is preferred to the service of the SIM card 2; the second option 72 is used to indicate the service priority of the second subscriber identity card, i.e. the service of SIM card 2 is prioritized over the voice service of SIM card 1; the third option 73 is a smart selection option that can determine the service priority order of the first subscriber identity card and the second subscriber identity card from historical speech data.

If the user clicks the first option 71, it is determined that the priority of the voice service of the first user identification card is higher than the service priority of the second user identification card, at this time, the terminal device responds to the selection operation of the first option 41, adjusts the initial network selection parameter through the first network selection parameter offset value to obtain a target network selection parameter, and the terminal device performs judgment on cell change of the second user identification card based on the target network selection parameter.

If the user clicks the second option 72, it is determined that the priority of the voice service of the first subscriber identity card is lower than the service priority of the second subscriber identity card, at this time, the terminal device responds to the selection operation of the second option 72, and does not need to adjust the initial network selection parameter according to the offset value of the first network selection parameter, but directly executes the judgment of the cell change for the second subscriber identity card according to the initial network selection parameter.

If the user performs a click operation on the third option 73, it is determined that the service priority order of the first user identification card and the second user identification card needs to be determined according to the historical voice data. Specifically, the terminal device responds to the selection operation of the third option to acquire historical voice data of the first user identification card and the second user identification card; the terminal equipment determines a historical use preference value according to historical voice data; when the historical use preference value is larger than the preset preference value, the priority of the voice service of the first user identification card is determined to be higher than the service priority of the second user identification card, the terminal equipment adjusts the initial network selection parameter according to the network selection parameter deviant to obtain a target network selection parameter, and the judgment of the cell change of the second user identification card is executed based on the target network selection parameter.

And when the historical use preference value is less than or equal to the preset preference value, determining that the priority of the voice service of the first user identification card is lower than the service priority of the second user identification card, and directly executing the judgment of the cell change aiming at the second user identification card by the terminal equipment according to the initial network selection parameters.

The historical voice data of the first user identification card comprises a first historical use duration and a first historical use frequency, and the historical voice data of the second user identification card comprises a second historical use duration and a second historical use frequency; the terminal equipment calculates the ratio of the first historical use time length to the second historical use time length to obtain the use time length proportion; the terminal equipment calculates the ratio of the first historical use times to the second historical use times to obtain the use time ratio; and the terminal equipment takes the sum of the usage duration proportion and the usage frequency proportion as a historical usage preference value.

Illustratively, the first history duration of use is X ₁ The number of times of the first history use is N ₁ The second history duration is X ₂ The number of times of the second history use is N ₂ Then historical usage preference value W = X ₁ /X ₂ +N ₁ /N ₂ . The preset preference value may be set based on empirical values.

It is to be understood that the service priority selection interface 70 in the embodiment of the present application includes, but is not limited to, the first option 71, the second option 72, and the third option 73 shown in fig. 7, and in some embodiments, the service priority selection interface 70 may also include any one or both of the first option 71, the second option 72, and the third option 73.

For example, when the service priority selection interface 70 only includes the first option 71, if the first option 71 is triggered to be opened, it is determined that the initial network selection parameter needs to be adjusted by the first network selection parameter offset value to obtain a target network selection parameter, and based on the target network selection parameter, a decision of cell change for the second subscriber identity card is performed; if the first option 71 is triggered to be closed, the cell change judgment of the second subscriber identity card is determined to be executed directly according to the initial network selection parameters.

In a second optional implementation manner, for a scenario where the service type of the communication service is a game service type, at this time, when the second subscriber identity card performs a cell change, the mainly involved processes also include cell search, cell reselection, and cell handover.

The cell search process corresponding to the game service type is similar to the cell search process corresponding to the voice service type shown in fig. 4, but in the two scenarios of the game service type and the voice service type, the search period offset value sent by the application processor to the modem may be different.

Illustratively, the search period offset value corresponding to the game service type may be Δ Y ₂ Then the target search period Y corresponding to the game service type ₂ ＝Y ₀ +ΔY ₂ Search period offset value delta Y corresponding to game service type ₂ Is a positive number, Δ Y ₂ And Δ Y ₁ May not be equal. Therefore, the modem searches for the period Y according to the target corresponding to the game service type ₂ A cell search operation is performed.

The cell reselection process corresponding to the game service type is similar to the cell reselection process corresponding to the voice service type shown in fig. 5, however, in the two scenarios of the game service type and the voice service type, the first reselection threshold offset value, the reselection time parameter offset value, and the second reselection threshold offset value sent by the application processor to the modem may be different.

Illustratively, for the case that the candidate cell has a higher priority than the serving cell, the first reselection threshold offset value corresponding to the game service type is Δ R ₂₁ The reselection time parameter deviant value corresponding to the game service type is delta T ₂₁ (ii) a Aiming at the condition that the priority of the candidate cell is the same as that of the service cell, the first reselection threshold offset value corresponding to the game service type is delta R ₂₂ And the reselection time parameter offset value corresponding to the game service type is delta T ₂₂ (ii) a And aiming at the condition that the priority of the candidate cell is lower than that of the service cell, the first reselection threshold offset value corresponding to the game service type is delta R ₂₃ The reselection time parameter deviant value corresponding to the game service type is delta T ₂₃ The second reselection threshold offset value corresponding to the game service type is delta R ₂₄ 。

ΔR ₂₁ 、ΔT ₂₁ 、ΔR ₂₂ 、ΔT ₂₂ 、ΔR ₂₃ 、ΔT ₂₃ And Δ R ₂₄ Are all positive numbers, and Δ R ₂₁ And Δ R ₁₁ May be unequal, Δ T ₂₁ And Δ T ₁₁ May not be equal, Δ R ₂₂ And Δ R ₁₂ May be unequal, Δ T ₂₂ And Δ T ₁₂ May not be equal, Δ R ₂₃ And Δ R ₁₃ May be unequal, Δ T ₂₃ And Δ T ₁₃ May be unequal, Δ R ₂₄ And Δ R ₁₄ May not be equal.

Therefore, for a candidate cell with higher priority than the serving cell, the first target reselection threshold corresponding to the game service type is threshXHigh + Δ R ₂₁ Target reselection time parameter T corresponding to game service type ₂₁ ＝T ₁₀ +ΔT ₂₁ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. second user identification cardThe residence time of the serving cell exceeds 1s; 2. s of candidate cell _rxlev >ThreshXHigh+ΔR ₂₁ And duration is greater than T ₂₁ 。

Aiming at the candidate cell with the priority equal to the service cell, the first target reselection threshold corresponding to the game service type is ThreshXequal + delta R ₂₂ Target reselection time parameter T corresponding to game service type ₂₂ ＝T ₂₀ +ΔT ₂₂ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. r of candidate cell _t R with serving cell _s The difference is greater than ThreshXequol + DeltaR ₂₂ And duration is greater than T ₂₂ 。

Aiming at the candidate cells with the priority lower than the serving cell, the first target reselection threshold corresponding to the game service type is ThreshXLow + delta R ₂₃ Target reselection time parameter T corresponding to game service type ₂₃ ＝T ₃₀ +ΔT ₂₃ The second target reselection threshold corresponding to the game service type is ThrshServLow-delta R ₂₄ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of serving cell _rxlev ＜ThrshServLow-ΔR ₂₄ S of candidate cell _rxlev >ThreshXLow+ΔR ₂₃ And duration is greater than T ₂₃ 。

The cell switching process corresponding to the game service type is similar to the cell switching process corresponding to the voice service type shown in fig. 6, however, in the two scenarios of the game service type and the voice service type, the first switching threshold offset value and the second switching threshold offset value sent by the application processor to the modem may be different.

Illustratively, for an A3 event, the first switching threshold offset value corresponding to the game service type is Δ H ₂₁ (ii) a Aiming at the A4 event, the first switching threshold deviation value corresponding to the game service type is delta H ₂₂ (ii) a For the A5 event, the first game service type corresponds toThe handover threshold offset value is Δ H ₂₃ The second switching threshold deviant value corresponding to the game service type is delta H ₂₄ (ii) a Aiming at the B1 event, the first switching threshold deviation value corresponding to the game service type is delta H ₂₅ (ii) a Aiming at the B2 event, the first switching threshold deviation value corresponding to the game service type is delta H ₂₆ The second switching threshold deviant value corresponding to the game service type is delta H ₂₇ 。

ΔH ₂₁ 、ΔH ₂₂ 、ΔH ₂₃ 、ΔH ₂₄ 、ΔH ₂₅ 、ΔH ₂₆ And Δ H ₂₇ Are all positive numbers, and Δ H ₂₁ And Δ H ₁₁ May not be equal, Δ H ₂₂ And Δ H ₁₂ May be unequal, Δ H ₂₃ And Δ H ₁₃ May not be equal, Δ H ₂₄ And Δ H ₁₄ May not be equal, Δ H ₂₅ And Δ H ₁₅ May be unequal, Δ H ₂₆ And Δ H ₁₆ May not be equal, Δ H ₂₇ And Δ H ₁₇ May not be equal.

Therefore, for the A3 event, the first target switching threshold H corresponding to the game service type ₂₁ ＝H ₁₀ +ΔH ₂₁ . When the difference between the signal quality of the candidate cell and the signal quality of the serving cell is greater than H ₂₁ The modem then reports a measurement report for the A3 event of the second subscriber identity card to the network device.

Aiming at the A4 event, a first target switching threshold H corresponding to the game service type ₂₂ ＝H ₂₀ +ΔH ₂₂ . When the signal quality of the candidate cell is greater than H ₂₂ The modem reports a measurement report for the A4 event of the second subscriber identity card to the network device.

Aiming at the A5 event, a first target switching threshold H corresponding to the game service type ₂₃ ＝H ₃₀ +ΔH ₂₃ Second target switching threshold H corresponding to game service type ₂₄ ＝H ₄₀ -ΔH ₂₄ . When the signal quality of the serving cell is less than H ₂₄ And the signal quality of the candidate cell is greater than H ₂₃ The modem reports a measurement report for the A5 event of the second subscriber identity card to the network deviceAnd (6) informing.

Aiming at the B1 event, a first target switching threshold H corresponding to the game service type ₂₅ ＝H ₅₀ +ΔH ₂₅ . When the signal quality of the candidate cell is greater than H ₂₅ And the modem reports a measurement report of the B1 event aiming at the second user identification card to the network equipment.

Aiming at the B2 event, a first target switching threshold H corresponding to the game service type ₂₆ ＝H ₆₀ +ΔH ₂₆ Second target switching threshold H corresponding to game service type ₂₇ ＝H ₇₀ -ΔH ₂₇ . When the signal quality of the serving cell is less than H ₂₇ And the signal quality of the candidate cell is greater than H ₂₆ The modem reports a measurement report for the B2 event of the second subscriber identity card to the network device.

In a third optional implementation manner, for a scenario where the service type of the communication service is a video service type, at this time, when the second subscriber identity card performs a cell change, the mainly involved processes also include cell search, cell reselection, and cell handover.

The cell search process corresponding to the video service type is similar to the cell search process corresponding to the voice service type shown in fig. 4, but in the two scenarios of the video service type and the voice service type, the search period offset value sent by the application processor to the modem may be different.

Illustratively, the search period offset value corresponding to the video service type may be Δ Y ₃ Then the target search period Y corresponding to the video service type ₃ ＝Y ₀ +ΔY ₃ Search period offset value Δ Y corresponding to video service type ₃ Is a positive number, Δ Y ₃ And Delta Y ₂ And Δ Y ₁ May not be equal. Therefore, the modem searches for the target search period Y according to the type of the video service ₃ A cell search operation is performed.

The cell reselection procedure corresponding to the video service type is similar to the cell reselection procedure corresponding to the voice service type shown in fig. 5, however, in the two scenarios of the video service type and the voice service type, the first reselection threshold offset value, the reselection time parameter offset value, and the second reselection threshold offset value sent by the application processor to the modem may be different.

Illustratively, for the case that the priority of the candidate cell is higher than that of the serving cell, the first reselection threshold offset value corresponding to the video service type is Δ R ₃₁ And the reselection time parameter offset value corresponding to the video service type is delta T ₃₁ (ii) a Aiming at the condition that the priority of the candidate cell is the same as that of the serving cell, the first reselection threshold offset value corresponding to the video service type is delta R ₃₂ And the reselection time parameter offset value corresponding to the video service type is delta T ₃₂ (ii) a And aiming at the condition that the priority of the candidate cell is lower than that of the service cell, the first reselection threshold offset value corresponding to the video service type is delta R ₃₃ And the reselection time parameter offset value corresponding to the video service type is delta T ₃₃ And the second reselection threshold offset value corresponding to the video service type is delta R ₃₄ 。

ΔR ₃₁ 、ΔT ₃₁ 、ΔR ₃₂ 、ΔT ₃₂ 、ΔR ₃₃ 、ΔT ₃₃ And Δ R ₃₄ Are all positive numbers, and Δ R ₃₁ And Δ R ₂₁ And Δ R ₁₁ May be unequal, Δ T ₃₁ And Δ T ₂₁ And Δ T ₁₁ May be unequal, Δ R ₃₂ And Δ R ₂₂ And Δ R ₁₂ May not be equal, Δ T ₃₂ And Δ T ₂₂ And Δ T ₁₂ May not be equal, Δ R ₃₃ And Δ R ₂₃ And Δ R ₁₃ May be unequal, Δ T ₃₃ And Δ T ₂₃ And Δ T ₁₃ May not be equal, Δ R ₃₄ And Δ R ₂₄ And Δ R ₁₄ May not be equal.

Therefore, for a candidate cell with higher priority than the serving cell, the first target reselection threshold corresponding to the video service type is threshXHigh + Δ R ₃₁ Target reselection time parameter T corresponding to video service type ₃₁ ＝T ₁₀ +ΔT ₃₁ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. second user identification cardThe residence time of the serving cell exceeds 1s; 2. s of candidate cell _rxlev >ThreshXHigh+ΔR ₃₁ And duration is greater than T ₃₁ 。

Aiming at the candidate cell with the priority equal to the service cell, the first target reselection threshold corresponding to the video service type is ThreshXequal + Delta R ₃₂ Target reselection time parameter T corresponding to video service type ₃₂ ＝T ₂₀ +ΔT ₃₂ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. r of candidate cell _t R with serving cell _s The difference is greater than ThreshXequol + DeltaR ₃₂ And duration is greater than T ₃₂ 。

Aiming at the candidate cell with the priority lower than that of the service cell, the first target reselection threshold corresponding to the video service type is ThreshXLow + delta R ₃₃ Target reselection time parameter T corresponding to video service type ₃₃ ＝T ₃₀ +ΔT ₃₃ The second target reselection threshold corresponding to the video service type is ThrshServLow-delta R ₃₄ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of serving cell _rxlev ＜ThrshServLow-ΔR ₃₄ S of candidate cell _rxlev >ThreshXLow+ΔR ₃₃ And duration is greater than T ₃₃ 。

The cell switching procedure corresponding to the video service type is similar to the cell switching procedure corresponding to the voice service type shown in fig. 6, however, in the two scenarios of the video service type and the voice service type, the first switching threshold offset value and the second switching threshold offset value sent by the application processor to the modem may be different.

Illustratively, for an A3 event, the first handover threshold offset value corresponding to the video service type is Δ H ₃₁ (ii) a Aiming at the A4 event, the first switching threshold deviation value corresponding to the video service type is delta H ₃₂ (ii) a Aiming at A5 event, a first video service type corresponds toThe handover threshold offset value is Δ H ₃₃ And the second switching threshold deviant value corresponding to the video service type is delta H ₃₄ (ii) a Aiming at the B1 event, the first switching threshold deviation value corresponding to the video service type is delta H ₃₅ (ii) a Aiming at the B2 event, the first switching threshold deviation value corresponding to the video service type is delta H ₃₆ And the second switching threshold deviant value corresponding to the video service type is delta H ₃₇ 。

ΔH ₃₁ 、ΔH ₃₂ 、ΔH ₃₃ 、ΔH ₃₄ 、ΔH ₃₅ 、ΔH ₃₆ And Δ H ₃₇ Are all positive numbers, and Δ H ₃₁ And Δ H ₂₁ And Δ H ₁₁ May not be equal, Δ H ₃₂ And Δ H ₂₂ And Δ H ₁₂ May not be equal, Δ H ₃₃ And Δ H ₂₃ And Δ H ₁₃ May not be equal, Δ H ₃₄ And Δ H ₂₄ And Δ H ₁₄ May not be equal, Δ H ₃₅ And Δ H ₂₅ And Δ H ₁₅ May be unequal, Δ H ₃₆ And Δ H ₂₆ And Δ H ₁₆ May be unequal, Δ H ₃₇ And Δ H ₂₇ And Δ H ₁₇ May not be equal.

Therefore, for the A3 event, the first target switching threshold H corresponding to the video service type ₃₁ ＝H ₁₀ +ΔH ₃₁ . When the difference between the signal quality of the candidate cell and the signal quality of the serving cell is greater than H ₃₁ At this time, the modem reports a measurement report for the A3 event of the second subscriber identity card to the network device.

Aiming at the A4 event, a first target switching threshold H corresponding to the video service type ₃₂ ＝H ₂₀ +ΔH ₃₂ . When the signal quality of the candidate cell is greater than H ₃₂ At this time, the modem reports a measurement report for the A4 event of the second subscriber identity card to the network device.

Aiming at the A5 event, a first target switching threshold H corresponding to the video service type ₃₃ ＝H ₃₀ +ΔH ₃₃ Second target switching threshold H corresponding to video service type ₃₄ ＝H ₄₀ -ΔH ₃₄ . When the signal quality of the serving cell is less than H ₃₄ And is made a candidate forSignal quality of cell greater than H ₃₃ The modem then reports a measurement report for the A5 event for the second subscriber identity card to the network device.

Aiming at the B1 event, a first target switching threshold H corresponding to the video service type ₃₅ ＝H ₅₀ +ΔH ₃₅ . When the signal quality of the candidate cell is greater than H ₃₅ The modem reports a measurement report for the B1 event of the second subscriber identity card to the network device.

Aiming at the B2 event, a first target switching threshold H corresponding to the video service type ₃₆ ＝H ₆₀ +ΔH ₃₆ Second target switching threshold H corresponding to video service type ₃₇ ＝H ₇₀ -ΔH ₃₇ . When the signal quality of the serving cell is less than H ₃₇ And the signal quality of the candidate cell is greater than H ₃₆ The modem then reports a measurement report for the B2 event of the second subscriber identity card to the network device.

Aiming at the scene that the service type of the communication service is the video service type, the embodiment of the application can directly adjust the initial network selection parameter according to the video service type, and can also determine whether to adjust the initial network selection parameter according to the current data caching amount.

Specifically, when the application processor determines that the service type corresponding to the communication service executed by the first user identification card is the video service type, the application processor obtains the data caching amount of the communication service corresponding to the video service type; and when the data buffer amount is less than or equal to the preset buffer amount, the terminal equipment adjusts the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter, and judges the cell change of the second user identification card according to the target network selection parameter. The preset buffer amount may be set based on an empirical value.

By considering the data buffer amount of the video being watched, when the data buffer amount is less than or equal to the preset buffer amount, if the second subscriber identity card frequently performs cell search, and performs cell reselection or cell handover, etc., it may cause video jamming. Therefore, when the data buffer amount is less than or equal to the preset buffer amount, the cell search period of the second subscriber identity module card is prolonged, and the difficulty of cell reselection and cell switching is increased, so that the radio frequency resource occupied by the second subscriber identity module card is reduced, and the fluency of videos is improved.

In one case, the application processor acquires the data buffer amount of the communication service corresponding to the video service type, and when the application processor judges that the data buffer amount is less than or equal to the preset buffer amount, the application processor sends a notification message to the modem to inform the modem that the initial network selection parameter needs to be adjusted by adopting the network selection parameter deviant; or, when the application processor determines that the data buffer amount is less than or equal to the preset buffer amount, the application processor sends the third network selection parameter offset value to the modem.

In another case, the application processor obtains the data buffer amount of the communication service corresponding to the video service type, and sends the data buffer amount to the modem, the modem judges whether the data buffer amount is smaller than or equal to the preset buffer amount, and when the data buffer amount is smaller than or equal to the preset buffer amount, the modem adjusts the initial network selection parameter by using the network selection parameter deviant.

And when the data buffer amount is larger than the preset buffer amount, the terminal equipment does not need to adjust the initial network selection parameter according to the network selection parameter deviation value, but directly executes the judgment of the cell change aiming at the second user identification card according to the initial network selection parameter. When the data buffer amount is larger than the preset buffer amount, in this case, even if the second subscriber identity module card frequently performs cell search and performs operations such as cell reselection or cell handover, the video is not easily jammed.

In a fourth optional implementation manner, in a scenario where the service type of the communication service is a file transfer service type, at this time, when the second subscriber identity card performs a cell change, the mainly involved processes also include cell search, cell reselection, and cell handover.

The cell search process corresponding to the file transfer service type is similar to the cell search process corresponding to the voice service type shown in fig. 4, but in the two scenarios of the file transfer service type and the voice service type, the search period offset value sent by the application processor to the modem may be different.

Illustratively, the search period offset value corresponding to the file transfer service type may be Δ Y ₄ If so, the target search period Y corresponding to the file transmission service type ₄ ＝Y ₀ +ΔY ₄ Search period offset value delta Y corresponding to file transmission service type ₄ Is a positive number, Δ Y ₄ And Δ Y ₃ 、ΔY ₂ And Δ Y ₁ May not be equal. Therefore, the modem searches for the target search period Y according to the type of the file transmission service ₄ A cell search operation is performed.

The cell reselection process corresponding to the file transfer service type is similar to the cell reselection process corresponding to the voice service type shown in fig. 5, however, in the two scenarios of the file transfer service type and the voice service type, the first reselection threshold offset value, the reselection time parameter offset value, and the second reselection threshold offset value sent by the application processor to the modem may be different.

Illustratively, for the case that the priority of the candidate cell is higher than that of the serving cell, the first reselection threshold offset value corresponding to the file transfer service type is Δ R ₄₁ And the reselection time parameter offset value corresponding to the file transmission service type is delta T ₄₁ (ii) a Aiming at the condition that the priority of the candidate cell is the same as that of the serving cell, the first reselection threshold offset value corresponding to the file transmission service type is delta R ₄₂ The reselection time parameter offset value corresponding to the file transmission service type is delta T ₄₂ (ii) a And aiming at the condition that the priority of the candidate cell is lower than that of the service cell, the first reselection threshold offset value corresponding to the file transmission service type is delta R ₄₃ And the reselection time parameter offset value corresponding to the file transmission service type is delta T ₄₃ The second reselection threshold offset value corresponding to the file transmission service type is delta R ₄₄ 。

ΔR ₄₁ 、ΔT ₄₁ 、ΔR ₄₂ 、ΔT ₄₂ 、ΔR ₄₃ 、ΔT ₄₃ And Δ R ₄₄ Are all positive numbers, and Δ R ₄₁ And Δ R ₃₁ 、ΔR ₂₁ And Δ R ₁₁ May not be equal, Δ T ₄₁ And Δ T ₃₁ 、ΔT ₂₁ And Δ T ₁₁ May be unequal, Δ R ₄₂ And Δ R ₃₂ 、ΔR ₂₂ And Δ R ₁₂ May be unequal, Δ T ₄₂ And Δ T ₃₂ 、ΔT ₂₂ And Δ T ₁₂ May be unequal, Δ R ₄₃ And Δ R ₃₃ 、ΔR ₂₃ And Δ R ₁₃ May not be equal, Δ T ₄₃ And Δ T ₃₃ 、ΔT ₂₃ And Δ T ₁₃ May not be equal, Δ R ₄₄ And Δ R ₃₄ 、ΔR ₂₄ And Δ R ₁₄ May not be equal.

Therefore, for a candidate cell with higher priority than the serving cell, the first target reselection threshold corresponding to the file transfer service type is threshXHigh + Δ R ₄₁ Target reselection time parameter T corresponding to file transmission service type ₄₁ ＝T ₁₀ +ΔT ₄₁ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of candidate cell _rxlev >ThreshXHigh+ΔR ₄₁ And duration is greater than T ₄₁ 。

Aiming at the candidate cell with the priority equal to the service cell, the first target reselection threshold corresponding to the file transmission service type is ThreshXequal + delta R ₄₂ Target reselection time parameter T corresponding to file transmission service type ₄₂ ＝T ₂₀ +ΔT ₄₂ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. r of candidate cell _t R with serving cell _s Is greater than ThreshXequol + DeltaR ₄₂ And duration is greater than T ₄₂ 。

Aiming at the candidate cell with the priority lower than that of the serving cell, the first target reselection threshold corresponding to the file transmission service type is ThreshXLow + delta R ₄₃ Target reselection time parameter T corresponding to file transmission service type ₄₃ ＝T ₃₀ +ΔT ₄₃ Type of file transfer serviceThe corresponding second target reselection threshold is ThrshServerLow-Delta R ₄₄ . The second subscriber identity card is to reselect from the serving cell to the candidate cell, which needs to satisfy the following condition: 1. the residence time of the second user identification card in the service cell exceeds 1s; 2. s of the serving cell _rxlev ＜ThrshServLow-ΔR ₄₄ S of candidate cell _rxlev >ThreshXLow+ΔR ₄₃ And duration is greater than T ₄₃ 。

The cell switching process corresponding to the file transfer service type is similar to the cell switching process corresponding to the voice service type shown in fig. 6, however, in the two scenarios of the file transfer service type and the voice service type, the first switching threshold offset value and the second switching threshold offset value sent by the application processor to the modem may be different.

Illustratively, for an A3 event, the first switching threshold offset value corresponding to the file transfer service type is Δ H ₄₁ (ii) a Aiming at the A4 event, the first switching threshold deviation value corresponding to the file transmission service type is delta H ₄₂ (ii) a Aiming at the A5 event, the first switching threshold deviation value corresponding to the file transmission service type is delta H ₄₃ The second switching threshold deviant value corresponding to the file transmission service type is delta H ₄₄ (ii) a Aiming at the B1 event, the first switching threshold deviation value corresponding to the file transmission service type is delta H ₄₅ (ii) a Aiming at the B2 event, the first switching threshold deviation value corresponding to the file transmission service type is delta H ₄₆ And the second switching threshold deviant value corresponding to the file transmission service type is delta H ₄₇ 。

ΔH ₄₁ 、ΔH ₄₂ 、ΔH ₄₃ 、ΔH ₄₄ 、ΔH ₄₅ 、ΔH ₄₆ And Δ H ₄₇ Are all positive numbers, and Δ H ₄₁ And Δ H ₃₁ 、ΔH ₂₁ And Δ H ₁₁ May not be equal, Δ H ₄₂ And Δ H ₃₂ 、ΔH ₂₂ And Δ H ₁₂ May not be equal, Δ H ₄₃ And Δ H ₃₃ 、ΔH ₂₃ And Δ H ₁₃ May be unequal, Δ H ₄₄ And Δ H ₃₄ 、ΔH ₂₄ And Δ H ₁₄ May be unequal, Δ H ₄₅ And Δ H ₃₅ 、ΔH ₂₅ And Δ H ₁₅ May not be equal, Δ H ₄₆ And Δ H ₃₆ 、ΔH ₂₆ And Δ H ₁₆ May be unequal, Δ H ₄₇ And Δ H ₃₇ 、ΔH ₂₇ And Δ H ₁₇ May not be equal.

Therefore, aiming at the A3 event, the first target switching threshold H corresponding to the file transmission service type ₄₁ ＝H ₁₀ +ΔH ₄₁ . When the difference between the signal quality of the candidate cell and the signal quality of the serving cell is greater than H ₄₁ The modem then reports a measurement report for the A3 event of the second subscriber identity card to the network device.

Aiming at the A4 event, a first target switching threshold H corresponding to the file transmission service type ₄₂ ＝H ₂₀ +ΔH ₄₂ . When the signal quality of the candidate cell is greater than H ₄₂ At this time, the modem reports a measurement report for the A4 event of the second subscriber identity card to the network device.

Aiming at the A5 event, a first target switching threshold H corresponding to the file transmission service type ₄₃ ＝H ₃₀ +ΔH ₄₃ Second target switching threshold H corresponding to file transmission service type ₄₄ ＝H ₄₀ -ΔH ₄₄ . When the signal quality of the serving cell is less than H ₄₄ And the signal quality of the candidate cell is greater than H ₄₃ The modem then reports a measurement report for the A5 event for the second subscriber identity card to the network device.

Aiming at the B1 event, a first target switching threshold H corresponding to the file transmission service type ₄₅ ＝H ₅₀ +ΔH ₄₅ . When the signal quality of the candidate cell is greater than H ₄₅ And the modem reports a measurement report of the B1 event aiming at the second user identification card to the network equipment.

Aiming at the B2 event, a first target switching threshold H corresponding to the file transmission service type ₄₆ ＝H ₆₀ +ΔH ₄₆ Second target switching threshold H corresponding to file transmission service type ₄₇ ＝H ₇₀ -ΔH ₄₇ . When the signal quality of the serving cell is less than H ₄₇ And the signal quality of the candidate cell is greater than H ₄₆ The modem reports a measurement report for the B2 event of the second subscriber identity card to the network device.

Aiming at the scene that the service type of the communication service is the file transmission service type, the embodiment of the application can directly adjust the initial network selection parameter according to the file transmission service type, and also can determine whether to adjust the initial network selection parameter according to whether the communication service corresponding to the file transmission service type is the communication service in the foreground application.

Specifically, when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the terminal device adjusts the initial network selection parameter according to the offset value of the network selection parameter to obtain a target network selection parameter, and executes a judgment of cell change for the second user identification card according to the target network selection parameter.

And when the communication service corresponding to the file transmission service type is the communication service running in the background application, the terminal equipment does not need to adjust the initial network selection parameter according to the offset value of the network selection parameter, but directly executes the judgment of the cell change aiming at the second user identification card according to the initial network selection parameter.

The foreground application refers to an application program currently displayed and operated on a screen of the terminal device, and at the moment, a user can see an interface of the application program on the screen; background application refers to an application program running in the background of the system, and at this time, the screen of the terminal device does not display an interface corresponding to the application program.

When the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the communication service is an urgent service, and at this time, the cell search period of the second subscriber identity card can be increased, and the difficulty of cell reselection and cell switching can be increased, so that the radio frequency resource occupied by the second subscriber identity card can be reduced, and the communication service can be quickly executed and completed. And when the communication service corresponding to the file transmission service type is the communication service running in the background application, the communication service is represented as a non-emergency service, and at the moment, the judgment of the cell change of the second user identification card is directly executed according to the initial network selection parameters, so that the second user identification card can be resident in a network with better signals in time.

In addition, when the first subscriber identity module card does not perform communication service, or the communication service executed by the first subscriber identity module card does not belong to any one of the voice service type, the game service type, the video service type and the file transmission service type, the second subscriber identity module card does not need to adjust the initial network selection parameter according to the network selection parameter deviation value, but directly executes the judgment of cell change aiming at the second subscriber identity module card according to the initial network selection parameter, so that the second subscriber identity module card can be rapidly resided in a cell with better signal.

It is understood that the reselection threshold, the handover threshold, and the signal quality of the cell in the embodiment of the present application may be any of the following parameters: signal to interference plus noise ratio (SINR), RSRP, reference Signal Received Quality (RSRQ), or Received Signal Strength (RSSI), which is not limited in the embodiments of the present application.

Having described the cell change method according to the embodiment of the present application, a terminal device that performs the cell change method according to the embodiment of the present application is described below. Those skilled in the art can understand that the method and apparatus may be mutually combined and referred, and the terminal device provided in the embodiments of the present application may perform the steps of the above-described cell change method.

The terminal device 100 includes a first subscriber identity card, a second subscriber identity card, a radio frequency module 130, an application processor 140, and a modem 120, wherein the radio frequency module 130 is shared by the first subscriber identity card and the second subscriber identity card. The application processor 140 is configured to obtain a service type corresponding to a communication service executed by the first subscriber identity card; the application processor 140 or the modem 120 is configured to query a network selection parameter offset value corresponding to the service type; the modem 120 is configured to adjust the initial network selection parameter according to the network selection parameter offset value to obtain a target network selection parameter; the modem 120 is further configured to perform a cell change decision for the second subscriber identity card according to the target network selection parameter. The network selection parameter deviant comprises a first class parameter deviant, and a target network selection parameter corresponding to the first class parameter deviant is larger than an initial network selection parameter corresponding to the first class parameter deviant; the first type of parameter offset value includes at least one of a search period offset value, a first reselection threshold offset value for the candidate cell, a first handover threshold offset value for the candidate cell, and a reselection time parameter offset value.

Optionally, the modem 120 is specifically configured to perform at least one of the following operations: taking the sum of the initial search period and the offset value of the search period as a target search period; taking the sum of the first initial reselection threshold and the first reselection threshold offset value as a first target reselection threshold; taking the sum of the first initial switching threshold and the first switching threshold deviant as a first target switching threshold; taking the sum of the initial reselection time parameter and the reselection time parameter offset value as a target reselection time parameter; wherein the search period offset value, the first reselection threshold offset value, the first handover threshold offset value, and the reselection time parameter offset value are all positive numbers.

Optionally, the network selection parameter offset value further includes a second type parameter offset value, and a target network selection parameter corresponding to the second type parameter offset value is smaller than an initial network selection parameter corresponding to the second type parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for the serving cell and a second handover threshold offset value for the serving cell.

Optionally, the modem 120 is specifically configured to perform at least one of the following operations: taking the difference value of the second initial reselection threshold and the second reselection threshold offset value as a second target reselection threshold; taking the difference value of the second initial switching threshold and the second switching threshold offset value as a second target switching threshold; wherein the second reselection threshold offset value and the second handover threshold offset value are both positive numbers.

Optionally, the radio frequency module 130 is configured to receive an initial network selection parameter sent by the network device.

Optionally, the service type includes a voice service type, a game service type, a video service type and a file transfer service type; and the network selection parameter deviation values corresponding to the service types are different.

Optionally, the terminal device 100 includes a display screen, and the service type is a voice service type; the display screen is used for displaying a service priority selection interface, the service priority selection interface comprises a first option, a second option and a third option, the first option is used for indicating the service priority of the first user identification card, the second option is used for indicating the service priority of the second user identification card, and the third option is used for indicating the service priority sequence of selecting the first user identification card and the second user identification card according to historical voice data; the application processor 140 is further configured to trigger the modem 120 to perform a step of adjusting the initial network selection parameter according to the network selection parameter offset value in response to the selection operation of the first option, so as to obtain a target network selection parameter; or, the application processor 140 is further configured to, in response to a selection operation of the third option, obtain historical voice data of the first user identification card and the second user identification card; an application processor 140, further configured to determine a historical usage preference value based on historical speech data; the application processor 140 is further configured to trigger the modem 120 to perform a step of adjusting the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter when the historical usage preference value is greater than the preset preference value.

Optionally, the historical voice data of the first subscriber identity card includes a first historical usage duration and a first historical usage number, and the historical voice data of the second subscriber identity card includes a second historical usage duration and a second historical usage number; the application processor 140 is specifically configured to: calculating the ratio of the first historical use duration to the second historical use duration to obtain a use duration ratio; calculating the ratio of the first historical use times to the second historical use times to obtain a use time ratio; and taking the sum of the usage duration proportion and the usage frequency proportion as a historical usage preference value.

Optionally, the modem 120 is further configured to: and when receiving a selection operation of the first option or the historical use preference value is greater than the preset preference value, forbidding the response network equipment 200 to send the paging message to the second subscriber identity card.

Optionally, the service type is a video service type; the application processor 140, further configured to: acquiring a data caching amount of a communication service corresponding to a video service type; when the data buffer amount is less than or equal to the preset buffer amount, the modem 120 is triggered to execute the step of adjusting the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter.

Optionally, the service type is a file transmission service type; the application processor 140 is further configured to: when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the modem 120 is triggered to execute the step of adjusting the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter.

The terminal device of the embodiment of the present application may be correspondingly configured to execute the steps executed in the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 8 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application. The terminal device 100 shown in fig. 8 includes: a memory 801, a processor 210, and a communication interface 802, wherein the memory 801, the processor 210, the communication interface 802 may communicate; illustratively, the memory 801, processor 210, and communication interface 802 may communicate via a communication bus.

The Memory 801 may be a Read Only Memory (ROM), a static Memory device, a dynamic Memory device, or a Random Access Memory (RAM). The memory 801 may store computer programs, which are controlled by the processor 210 to execute, and the communication interface 802 to execute the communication, so as to implement the cell change method provided by the above-mentioned embodiment of the present application. Processor 210 may include application processor 140 and modem 120.

The embodiment of the application also provides a computer readable storage medium. The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media may include computer storage media and communication media, and may include any medium that can communicate a computer program from one place to another. A storage medium may be any target medium that can be accessed by a computer.

In one possible implementation, a computer-readable medium may include RAM, ROM, a compact disk-read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and Disc, as used herein, includes Disc, laser Disc, optical Disc, digital Versatile Disc (DVD), floppy disk and blu-ray Disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above embodiments are only for the purpose of describing the embodiments of the present application and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A cell change method is applied to a terminal device, wherein the terminal device comprises a first subscriber identity card and a second subscriber identity card, and the first subscriber identity card and the second subscriber identity card share a same radio frequency module, and the method comprises the following steps:

the terminal equipment acquires a service type corresponding to a communication service executed by the first subscriber identity module card;

the terminal equipment inquires a network selection parameter deviation value corresponding to the service type;

the terminal equipment adjusts initial network selection parameters according to the network selection parameter deviation value to obtain target network selection parameters;

the terminal equipment executes the judgment of the cell change aiming at the second user identification card according to the target network selection parameter;

the network selection parameter deviant comprises a first type parameter deviant, and a target network selection parameter corresponding to the first type parameter deviant is larger than an initial network selection parameter corresponding to the first type parameter deviant; the first type of parameter offset value comprises at least one of a search period offset value, a first reselection threshold offset value for a candidate cell, a first handover threshold offset value for a candidate cell, and a reselection time parameter offset value.

2. The method according to claim 1, wherein the terminal device adjusts an initial network selection parameter according to the offset value of the network selection parameter to obtain a target network selection parameter, and includes performing at least one of the following operations:

the terminal equipment takes the sum of the initial search period and the offset value of the search period as a target search period;

the terminal device takes the sum of a first initial reselection threshold and the first reselection threshold offset value as a first target reselection threshold;

the terminal device takes the sum of the first initial switching threshold and the first switching threshold deviant as a first target switching threshold;

the terminal equipment takes the sum of the initial reselection time parameter and the reselection time parameter offset value as a target reselection time parameter;

wherein the search period offset value, the first reselection threshold offset value, the first handover threshold offset value, and the reselection time parameter offset value are all positive numbers.

3. The method according to claim 1, wherein the network selection parameter offset value further includes a second type parameter offset value, and a target network selection parameter corresponding to the second type parameter offset value is smaller than an initial network selection parameter corresponding to the second type parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for a serving cell and a second handover threshold offset value for the serving cell.

4. The method of claim 3, wherein the terminal device adjusts an initial network selection parameter according to the network selection parameter offset value to obtain a target network selection parameter, and includes performing at least one of the following operations:

the terminal device takes the difference value between a second initial reselection threshold and the second reselection threshold offset value as a second target reselection threshold;

the terminal device takes the difference value of a second initial switching threshold and the second switching threshold deviant as a second target switching threshold;

wherein the second reselection threshold offset value and the second handover threshold offset value are both positive numbers.

5. The method according to any one of claims 1 to 4, wherein before the terminal device adjusts an initial network selection parameter according to the network selection parameter offset value to obtain a target network selection parameter, the method further comprises:

and the terminal equipment receives the initial network selection parameters sent by the network equipment.

6. The method of claim 1, wherein the traffic types include a voice traffic type, a game traffic type, a video traffic type, and a file transfer traffic type; and the network selection parameter deviation values corresponding to the service types are different.

7. The method of claim 6, wherein the traffic type is the voice traffic type; before the terminal device adjusts the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter, the method further comprises the following steps:

the terminal equipment displays a service priority selection interface; the service priority selection interface comprises a first option, a second option and a third option, wherein the first option is used for indicating the service priority of the first subscriber identity card, the second option is used for indicating the service priority of the second subscriber identity card, and the third option is used for indicating the service priority sequence of selecting the first subscriber identity card and the second subscriber identity card according to historical voice data;

the terminal equipment responds to the selection operation of the first option and adjusts the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter;

or the terminal equipment responds to the selection operation of the third option and acquires historical voice data of the first user identification card and the second user identification card;

the terminal equipment determines a historical use preference value according to the historical voice data;

and when the historical use preference value is greater than a preset preference value, the terminal equipment executes the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter.

8. The method according to claim 7, wherein the historical voice data of the first subscriber identity card comprises a first historical usage duration and a first historical number of usage times, and the historical voice data of the second subscriber identity card comprises a second historical usage duration and a second historical number of usage times;

the terminal equipment determines a historical use preference value according to the historical voice data, and the method comprises the following steps:

the terminal equipment calculates the ratio of the first historical use time length to the second historical use time length to obtain a use time length proportion;

the terminal equipment calculates the ratio of the first historical use times to the second historical use times to obtain a use time ratio;

and the terminal equipment takes the sum of the usage duration proportion and the usage frequency proportion as the historical usage preference value.

9. The method according to claim 7, wherein after the terminal device obtains the service type corresponding to the communication service executed by the first subscriber identity card, the method further comprises:

and when the selection operation of the first option is received or the historical use preference value is greater than a preset preference value, the terminal equipment forbids responding to a paging message sent to the second subscriber identity card by the network equipment.

10. The method of claim 6, wherein the traffic type is the video traffic type; before the terminal device adjusts the initial network selection parameter according to the network selection parameter offset value to obtain the target network selection parameter, the method further comprises the following steps:

the terminal equipment acquires the data caching amount of the communication service corresponding to the video service type;

and when the data buffer amount is less than or equal to a preset buffer amount, the terminal equipment adjusts the initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter.

11. The method of claim 6, wherein the service type is the file transfer service type; and when the communication service corresponding to the file transmission service type is the communication service in which the foreground application is running, the terminal equipment executes the step of adjusting the initial network selection parameter according to the network selection parameter deviant to obtain a target network selection parameter.

12. A terminal device, comprising: the system comprises a first user identification card, a second user identification card, a radio frequency module, an application processor and a modem, wherein the first user identification card and the second user identification card share the radio frequency module;

the application processor is used for acquiring a service type corresponding to a communication service executed by the first subscriber identity module card;

the application processor or the modem is used for inquiring a network selection parameter offset value corresponding to the service type;

the modem is used for adjusting initial network selection parameters according to the network selection parameter deviation value to obtain target network selection parameters;

the modem is further configured to execute a decision of cell change for the second subscriber identity card according to the target network selection parameter;

13. The terminal device of claim 12, wherein the modem is specifically configured to perform at least one of the following operations:

taking the sum of the initial search period and the offset value of the search period as a target search period;

taking the sum of the first initial reselection threshold and the first reselection threshold offset value as a first target reselection threshold;

taking the sum of the first initial switching threshold and the first switching threshold deviant as a first target switching threshold;

taking the sum of the initial reselection time parameter and the reselection time parameter offset value as a target reselection time parameter;

14. The terminal device according to claim 12, wherein the network selection parameter offset value further includes a second type parameter offset value, and a target network selection parameter corresponding to the second type parameter offset value is smaller than an initial network selection parameter corresponding to the second type parameter offset value; the second type of parameter offset value comprises at least one of a second reselection threshold offset value for a serving cell and a second handover threshold offset value for the serving cell.

15. The terminal device of claim 14, wherein the modem is specifically configured to perform at least one of the following operations:

taking the difference value of the second initial reselection threshold and the second reselection threshold offset value as a second target reselection threshold;

taking the difference value between the second initial switching threshold and the second switching threshold offset value as a second target switching threshold;

16. The terminal device according to any one of claims 12 to 15, wherein the radio frequency module is configured to receive an initial network selection parameter sent by a network device.

17. The terminal device of claim 12, wherein the service types include a voice service type, a game service type, a video service type, and a file transfer service type; and the network selection parameter deviation values corresponding to the service types are different.

18. The terminal device according to claim 17, wherein the terminal device comprises a display screen, and the service type is the voice service type;

the display screen is used for displaying a service priority selection interface; the service priority selection interface comprises a first option, a second option and a third option, wherein the first option is used for indicating the service priority of the first subscriber identity card, the second option is used for indicating the service priority of the second subscriber identity card, and the third option is used for indicating the service priority sequence of selecting the first subscriber identity card and the second subscriber identity card according to historical voice data;

the application processor is further configured to trigger the modem to perform a step of adjusting an initial network selection parameter according to the network selection parameter offset value in response to the selection operation of the first option, so as to obtain a target network selection parameter;

or, the application processor is further configured to, in response to a selection operation of the third option, obtain historical voice data of the first user identification card and the second user identification card;

the application processor is further used for determining a historical use preference value according to the historical voice data;

and the application processor is further configured to trigger the modem to execute a step of adjusting an initial network selection parameter according to the network selection parameter offset value to obtain a target network selection parameter when the historical usage preference value is greater than a preset preference value.

19. The terminal device of claim 18, wherein the historical voice data of the first subscriber identity card comprises a first historical usage duration and a first historical usage number, and the historical voice data of the second subscriber identity card comprises a second historical usage duration and a second historical usage number;

the application processor is specifically configured to:

calculating the ratio of the first historical use time length to the second historical use time length to obtain a use time length proportion;

calculating the ratio of the first historical use times to the second historical use times to obtain a use time ratio;

and taking the sum of the usage time length proportion and the usage time proportion as the historical usage preference value.

20. The terminal device of claim 18, wherein the modem is further configured to:

and when receiving the selection operation of the first option or the historical use preference value is larger than a preset preference value, forbidding a response network device to send a paging message to the second subscriber identity card.

21. The terminal device of claim 17, wherein the service type is the video service type; the application processor is further configured to:

acquiring a data buffer amount of a communication service corresponding to the video service type;

and when the data buffer amount is less than or equal to a preset buffer amount, triggering the modem to execute a step of adjusting an initial network selection parameter according to the network selection parameter deviation value to obtain a target network selection parameter.

22. The terminal device according to claim 17, wherein the service type is the file transfer service type; the application processor is further configured to:

and when the communication service corresponding to the file transmission service type is the communication service running in the foreground application, triggering the modem to execute the step of adjusting the initial network selection parameter according to the network selection parameter deviation value to obtain the target network selection parameter.

23. A terminal device comprising a memory for storing a computer program and a processor for invoking the computer program to perform a cell change method according to any one of claims 1 to 11.

24. A computer-readable storage medium, in which a computer program or instructions are stored which, when executed, implement the cell change method according to any one of claims 1 to 11.