Cell selection method and device, storage medium and electronic equipment

Abstract

The invention discloses a cell selection method and device, a storage medium and electronic equipment, and relates to the technical field of wireless communication, the cell selection method is applied to terminal equipment, and comprises the following steps: under the condition that a cell is not selected, acquiring a preset frequency range of the terminal equipment, and in the preset frequency range, selecting a cell from the terminal equipment; determining a first target frequency according to the cell selection frequency priority; selecting a first cell according to the first target frequency; receiving the frequency range indicated by the base station when the cell reselection condition is reached; determining a second target frequency according to the cell reselection frequency priority in the received base station indication frequency range; and reselecting to a second cell according to the second target frequency. By applying the scheme provided by the embodiment of the invention, the cell reselection can be realized.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a cell selection method, apparatus, storage medium, and electronic device. Background Art

[0002] With the application and development of mobile communication technologies, especially with the deployment of 5G, user equipment on the market currently basically supports network modes such as the second-generation mobile communication technology (2G), the third-generation mobile communication technology (3G), the fourth-generation mobile communication technology (4G), and the fifth-generation mobile communication technology (5G).

[0003] User equipment needs to access a cell to obtain communication services. Among them, a cellular cell refers to an area covered by a base station or a part of a base station (sector antenna) in a cellular mobile communication system. Within this area, user equipment can communicate with the base station reliably through a wireless channel.

[0004] When user equipment is in an idle state in the current cell, it can perform a cell reselection process to reselect to a cell with a higher priority and better channel quality, thereby improving the user experience. In related technologies, reselection is usually performed according to the signal quality of the cell. In this way, when the signal quality of a cell with a lower network mode is good, for example, when the signal quality of a 4G cell is good, user equipment located in a 5G cell may be reselected to access the 4G cell through reselection. In this case, reducing the network mode may affect the user experience. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems in related technologies to some extent. For this reason, an object of the present invention is to provide a cell selection method, apparatus, storage medium, and electronic device to implement cell reselection.

[0006] According to a first aspect of an embodiment of the present invention, a cell selection method is provided, which is applied to a terminal device. The method includes:

[0007] When no cell is selected, obtain a preset frequency range of the terminal device;

[0008] In the preset frequency range, determine a first target frequency according to the cell selection frequency priority;

[0009] Select a first cell according to the first target frequency;

[0010] When the cell reselection condition is met, receive a base station indication frequency range;

[0011] In the received base station indication frequency range, determine a second target frequency according to the cell reselection frequency priority;

[0012] Re-select to a second cell according to the second target frequency.

[0013] According to a second aspect of an embodiment of the present invention, there is provided a cell selection device applied to a terminal device. The device includes:

[0014] A frequency range acquisition module, configured to acquire a preset frequency range of the terminal device when no cell is selected;

[0015] A first frequency determination module, configured to determine a first target frequency according to a cell selection frequency priority in the preset frequency range;

[0016] A first cell selection module, configured to select a first cell according to the first target frequency;

[0017] A frequency range receiving module, configured to receive a base station indication frequency range when a cell reselection condition is met;

[0018] A second frequency determination module, configured to determine a second target frequency according to a cell reselection frequency priority in the received base station indication frequency range;

[0019] A second cell selection module, re-select to a second cell according to the second target frequency.

[0020] According to a third aspect of an embodiment of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above cell selection method is implemented.

[0021] According to a fourth aspect of an embodiment of the present invention, there is provided an electronic device, including: a memory, a processor; a computer program is stored on the memory, and when the computer program is executed by the processor, the above cell selection method is implemented.

[0022] In the solution provided by the embodiment of the present invention, by setting the cell selection frequency priority and the cell reselection frequency priority, when the terminal selects the first cell and reselects the second cell, it can be selected according to the specified priority, obtain the first target frequency and the second target frequency with high priority, and try to access the cell of the high-priority network mode. Thus, while implementing cell reselection, the terminal is preferentially connected to the high-network-mode cell by setting the priority, so that the user can obtain a better service experience.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic flowchart of a cell selection method provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a cell selection device provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0027] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The cell selection method, storage medium, and electronic device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] In one embodiment of the present invention, refer to Figure 1 , a cell selection method is provided, including:

[0030] S101: When no cell is selected, obtain the preset frequency range of the terminal device;

[0031] S102: In the preset frequency range, determine the first target frequency according to the cell selection frequency priority;

[0032] S103: Select the first cell according to the first target frequency;

[0033] S104: When the cell reselection condition is met, receive the base station indication frequency range;

[0034] S105: In the received base station indication frequency range, determine the second target frequency according to the cell reselection frequency priority;

[0035] S106: Reselect to the second cell according to the second target frequency.

[0036] As described above, by setting the cell selection frequency priority and the cell reselection frequency priority, when the terminal selects the first cell and reselects the second cell, it can be selected according to the specified priority, obtain the first target frequency and the second target frequency with high priority, and try to access the high-priority network mode cell. Thus, while realizing cell reselection, the terminal is preferentially accessed to the high network mode cell by setting the priority, so that the user can obtain a better service experience.

[0037] In one embodiment, when determining the first target frequency, available network mode frequencies may be selected as the first target frequency from high to low in accordance with the priority order of cell selection frequency priorities within a preset frequency range.

[0038] The cell selection frequency priorities include: a first priority for high network mode frequencies and a second priority for low network mode frequencies within a preset frequency range, with the first priority set higher than the second priority.

[0039] That is, within the cell selection frequency priorities, the higher the priority corresponding to any network mode frequency, the more preferentially the cell meeting the access conditions is searched for according to this network mode frequency. If there is a cell meeting the access conditions, it is determined that the current network mode frequency is available, and this network mode frequency is determined as the first target frequency. Otherwise, this judgment process is executed from high to low in accordance with the priority until the first target frequency is selected or all the cells searched at all frequencies are determined not to meet the access conditions.

[0040] Similarly, when determining the second target frequency, available network mode frequencies may be selected as the second target frequency from high to low in accordance with the priority order of cell reselection frequency priorities within the base station indicated frequency range.

[0041] Among them, the cell reselection frequency priorities include: a third priority for high network mode frequencies and / or a fourth priority for low network mode frequencies among the received base station indicated frequencies, with the third priority set higher than the fourth priority.

[0042] Among them, the network mode refers to the network type, such as network types like LTE (long term evolution) (4G), NR (New Radio) (5G), GERAN (GSM EDGE Radio Access Network) (2G), WCDMA (Wideband Code Division Multiple Access) (3G), UTRAN (UMTS Terrestrial Radio Access Network) (3G), etc. In this application, the high network mode is relative to the low network mode. For example, the network mode of 5G is higher than that of 4G, and the network mode of 4G is higher than that of 3G or 2G. For example, LTE belongs to 4G and NR belongs to 5G, so the network mode of NR is higher than that of LTE. With the development of communication technology, there may also be a 6G network, and the network mode of the 6G network is higher than that of NR under 5G.

[0043] In subsequent embodiments, the high network mode frequency is taken as an example of the 5G frequency, and the low network mode frequency is taken as an example of the 4G frequency.

[0044] The 5G frequency and the 4G frequency are in different frequency bands. For example, the frequency band division of 5G is mainly divided into two categories: FR1

[0045] (Sub-6GHz) and FR2 (millimeter wave).

[0046] The determination method of the 5G frequency can be as follows:

[0047] F REF = F REF-Offs + ΔF Global (N REF - N REF-Offs )

[0048] Among them, F REF represents the range of the 5G frequency, F REF-Offs represents the initial value of the range of the 5G frequency, ΔF Global is the preset step size, N REF is the initial value of the 5G frequency number, N REF represents the range of the 5G frequency number, and the number range can be determined according to the TS38.104 protocol. See Table 1 below for the numerical relationship corresponding to each variable in the formula.

[0049] Table 1

[0050]

[0051] The specific frequency band division can adopt the 3GPP standard.

[0052] The above method can be applied to a multi-mode terminal, that is, a terminal that supports both 4G cell access and 5G cell access. In a specific embodiment, the multi-mode terminal can be a RedCap terminal. As a type of user equipment, the terminal can specifically be a mobile terminal, or a personal computer, etc., and the embodiments of the present invention do not limit this.

[0053] The cell selection frequency priority can be recorded in the form of a list. The cell selection frequency priority list records the 5G frequency and the 4G frequency in ascending or descending order, indicating that the priority gradually increases or decreases. In the case where the high network mode frequency is the 5G frequency and the low network mode frequency is the 4G frequency, the first priority is set to be higher than the second priority, that is, the priority of the 5G frequency is higher than the priority of the 4G frequency in the cell selection frequency priority list.

[0054] When the first priority is higher than the second priority, the terminal can preferentially search for cells on the 5G frequency with the first priority. If the cell meets the access conditions, it accesses the searched 5G cell. The 5G cell can specifically be a PCell (Primary Cell), a PSCell (Primary Secondary Cell), etc. The access conditions can be that the signal quality is higher than a preset threshold, etc. If there is no accessible 5G cell, it tries to access a 4G cell by searching the 4G frequency.

[0055] The process of determining the first cell according to the first target frequency specifically includes: The terminal finds the high-frequency carrier of the cell with the first target frequency as the center frequency point and synchronizes the frequency of the analog signal with the high-frequency carrier signal. The process of determining the second cell is similar.

[0056] The frequency range can be set according to the frequency of the accessed cell. After accessing a cell each time, the frequency of the accessed cell can be recorded in the terminal to form a frequency range.

[0057] The cell reselection conditions can include: The terminal is in the idle state, and the signal strength of the first cell drops below a preset threshold, etc.

[0058] The base station indication frequency can be the frequency indicated by the base station in the broadcast message sent to the terminal.

[0059] The cell reselection frequency priority can also be recorded in a list, similar to the above cell selection frequency priority list.

[0060] In this way, in the solution provided by the embodiments of the present invention, by setting the cell selection frequency priority and the cell reselection frequency priority, when the terminal selects the first cell and reselects the second cell, it always preferentially selects the high network mode frequency with a high priority and tries to access the high network mode cell. Thus, while realizing cell reselection, by trying to preferentially access the terminal to the high network mode cell, the user can obtain a better service experience.

[0061] In one embodiment, the cell selection frequency priority further includes:

[0062] When there are multiple high network mode frequencies in the preset frequency range, there is a first relative priority between the high network mode frequencies;

[0063] In another embodiment, when there are multiple low network mode frequencies in the preset frequency range, there is a second relative priority between the low network mode frequencies.

[0064] In this way, when there are multiple high network mode frequencies or multiple low network mode frequencies, selection can be made in sequence according to the first relative priority or the second relative priority to determine the frequency for searching for cells.

[0065] The relative priority does not affect the relationship between the first priority and the second priority. For example, if the first relative priority of 5G frequencies A, B, and C is A > B > C, and the second relative priority of 4G frequencies D, E, and F is D > E > F, then the overall cell selection frequency priority can be A > B > C > D > E > F, such that the first priority is always higher than the second priority.

[0066] Specifically, the first relative priority is determined according to the number of historical accessed cells corresponding to each high network mode frequency.

[0067] The historical accessed cells refer to the cells that the terminal has accessed within a period of time before the current moment. For example, among 5G frequencies A, B, and C, the first relative priority of A > B > C means that the number of accessed cells on frequency A is the largest, followed by frequency B, and the least on frequency C.

[0068] Alternatively, the first relative priority can also be determined by the access time. For example, if the current device accessed a cell on 5G frequency A the previous day and accessed a cell on 5G frequency B three days ago, since the access time of 5G frequency A is closer, it can be considered that the first relative priority is: A > B.

[0069] The determination method of the second relative priority is similar to that of the first relative priority, and will not be elaborated here.

[0070] In one embodiment, the preset frequency range is the frequency range formed by the frequencies of the historical accessed cells.

[0071] The terminal can pre-store the information of the previously accessed cells, so as to record the frequencies of the historical accessed cells. In this way, through the historical record method, available cells can be searched more quickly, facilitating the user equipment to access the network.

[0072] In another embodiment, if no accessible cell is found during the scan of the frequencies of the historical accessed cells, the frequency range can be set to the frequency range included in all the frequency bands supported by the user equipment, that is, perform frequency scanning on all the frequencies included in all the frequency bands to find accessible cells and access them. This can broaden the search range and find as many cells as possible that can provide services for the user equipment.

[0073] In one embodiment, when the first cell is a high network mode cell, the cell reselection frequency priority is determined as follows:

[0074] In the first case, if the base station indicated frequency only includes high network mode frequencies, then determine the cell reselection frequency priority according to the priority specified by the base station indicated frequency;

[0075] Or,

[0076] In the second case, if the base station indicated frequency includes a target low network mode frequency with a priority higher than that of the high network mode frequency, then delete the target low network mode frequency from the base station indicated frequency, and add the target low network mode frequency to the cell selection frequency priority; determine the cell reselection frequency priority according to the priority specified by the base station indicated frequency after deletion.

[0077] For example, in the first case, if the base station indicated frequency only includes 5G frequencies, then the sequence of each 5G frequency set in the base station indicated frequency represents the priority of the 5G frequency.

[0078] In the second case, for example, the priority set by the base station indicated frequency is A > B > D > C > E > F, where A, B, and C are 5G frequencies, and D, E, and F are 4G frequencies. Since D > C, frequency D becomes the target low network mode frequency. Delete D and add D to the cell selection frequency priority, so that this high-priority frequency can be used in the next cell selection. The frequencies with higher priorities indicated by the base station can usually be used to access cells with better service quality, so they can be used as a supplementary solution for the cell selection frequency priority to facilitate the terminal to achieve better cell access.

[0079] The priority after deletion is A > B > C > E > F, which is the cell reselection frequency priority.

[0080] If there are two or more cells with the same priority in the cell reselection frequency priority, for example, two accessible cells are obtained by scanning frequencies on the same frequency X, then the cell to be accessed can be selected according to the signal quality, for example, preferentially select the cell with higher signal quality.

[0081] This can ensure that the high network mode frequencies are always in a higher priority position, and the user equipment always preferentially selects high network mode cells for reselection access, thus obtaining a better user experience.

[0082] In one embodiment, when the first cell is a low network mode cell, the cell reselection frequency priority is determined as follows:

[0083] When it is indicated in the received base station indicated frequency that the priority is adjusted, set the high network mode frequencies in the base station indicated frequency to be higher than the low network mode frequencies, and keep the relative priorities between the high network mode frequencies and the relative priorities between the low network mode frequencies unchanged, and determine the cell reselection frequency priority according to the adjusted base station indicated frequency.

[0084] For example, if the base station indicates that the frequencies are A > B > D > C > E > F, where A, B, and C are 5G frequencies and D, E, and F are 4G frequencies, then the relative priorities of A, B, and C remain unchanged, the relative priorities of D, E, and F remain unchanged, and the cell reselection frequency priority is adjusted to A > B > C > D > E > F.

[0085] In one embodiment, the base station indication frequencies include: system message indication frequencies and / or dedicated signaling indication frequencies;

[0086] When receiving the dedicated signaling frequency, the cell reselection frequency priority is configured as the priority indicated by the dedicated signaling system frequency.

[0087] The dedicated signaling can be an RRC (Radio Resource Control) Release message. The priority for a specific scenario can be specifically set through the dedicated signaling.

[0088] In one embodiment, when reselecting to the second cell according to the second target frequency, the method further includes:

[0089] If no reselectable cell is found according to the second target frequency, then select the second cell according to the cell selection frequency priority.

[0090] For example, the first cell where the terminal camps is a 4G cell, and the terminal is in the RRC Connect state and receives an RRC Release message from the base station. The redirection information carried in the message indicates a 5G frequency as the second target frequency. Then, search preferentially on the indicated 5G frequency. If an accessible RedCap cell is found, attempt to access it.

[0091] If no reselectable cell is found, then enter the S101 cell selection process and search sequentially according to the 5G frequency and 4G frequency in the cell selection frequency priority list.

[0092] In this way, the frequency search range during reselection can be increased, and a cell that can provide services for the terminal can be found as much as possible.

[0093] Corresponding to the above embodiment, an embodiment of the present invention further provides a cell selection device, see Figure 2 , which is applied to a terminal device, and the device includes:

[0094] A frequency range acquisition module 201, configured to acquire a preset frequency range of the terminal device when no cell is selected;

[0095] A first frequency determination module 202, configured to determine a first target frequency according to the cell selection frequency priority in the preset frequency range;

[0096] The first cell selection module 203 is configured to select a first cell according to the first target frequency;

[0097] The frequency range receiving module 204 is configured to receive a base station indicated frequency range when the cell reselection condition is met;

[0098] The second frequency determination module 205 is configured to determine a second target frequency according to the cell reselection frequency priority in the received base station indicated frequency range;

[0099] The second cell selection module 206 reselects to a second cell according to the second target frequency.

[0100] With the above device, by setting the cell selection frequency priority and the cell reselection frequency priority, when the terminal selects the first cell and reselects the second cell, it can be selected according to the specified priority, obtain the first target frequency and the second target frequency with high priority, and attempt to access the cell of the high-priority network mode. Therefore, while realizing cell reselection, the terminal is preferentially accessed to the high-network-mode cell by setting the priority, so that the user can obtain a better service experience.

[0101] In one embodiment, the first frequency determination module is specifically configured to:

[0102] In the preset frequency range, select available network mode frequencies as the first target frequency in descending order of the priority order of the cell selection frequency priority;

[0103] The cell selection frequency priority includes: a first priority of a high network mode frequency and a second priority of a low network mode frequency in a preset frequency range, and the first priority is set to be higher than the second priority.

[0104] In one embodiment, the second frequency determination module is specifically configured to:

[0105] In the base station indicated frequency range, select available network mode frequencies as the second target frequency in descending order of the priority order of the cell reselection frequency priority;

[0106] Wherein, the cell reselection frequency priority includes: a third priority of a high network mode frequency and / or a fourth priority of a low network mode frequency in the received base station indicated frequency, and the third priority is set to be higher than the fourth priority.

[0107] In one embodiment, the cell selection frequency priority further includes:

[0108] When there are multiple high network mode frequencies in a preset frequency range, there is a first relative priority among the high network mode frequencies;

[0109] and / or,

[0110] When there are multiple low network mode frequencies in a preset frequency range, there is a second relative priority among the low network mode frequencies.

[0111] In one embodiment, the first relative priority is determined according to the number of historical access cells corresponding to each high network mode frequency.

[0112] In one embodiment, the preset frequency range is the frequency range formed by the frequencies of the historical access cells.

[0113] In one embodiment, when the first cell is a high network mode cell, the cell reselection frequency priority is determined as follows:

[0114] If the base station indication frequency only includes high network mode frequencies, then determine the cell reselection frequency priority according to the priority specified by the base station indication frequency;

[0115] Or,

[0116] If the base station indication frequency includes a target low network mode frequency with a priority higher than that of the high network mode frequency, then delete the target low network mode frequency from the base station indication frequency, and add the target low network mode frequency to the cell selection frequency priority; determine the cell reselection frequency priority according to the priority specified by the base station indication frequency after deletion.

[0117] In one embodiment, when the first cell is a low network mode cell, the cell reselection frequency priority is determined as follows:

[0118] When it is indicated in the received base station indication frequency that the priority is adjusted, set the high network mode frequencies in the base station indication frequency to be higher than the low network mode frequencies, and keep the relative priority among the high network mode frequencies and the relative priority among the low network mode frequencies unchanged, and determine the cell reselection frequency priority according to the adjusted base station indication frequency.

[0119] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the cell selection method described in any one of the above is implemented.

[0120] In one embodiment, an electronic device is provided, including: a memory and a processor; a computer program is stored on the memory, and when the computer program is executed by the processor, the cell selection method described in any one of the above is implemented.

[0121] Figure 3 It is a structural block diagram of the electronic device according to the embodiment of the present invention.

[0122] As Figure 3 As shown, the electronic device 300 includes: a processor 301 and a memory 303. Among them, the processor 301 and the memory 303 are connected, such as connected through a bus 302. Optionally, the electronic device 300 may further include a transceiver 304. It should be noted that in practical applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 does not constitute a limitation to the embodiment of the present invention.

[0123] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in connection with the disclosure of the present invention. The processor 301 may also be a combination that implements a computing function, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0124] The bus 302 may include a path for transmitting information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 2 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0125] The memory 303 is used to store a computer program corresponding to the cell selection method of the above embodiment of the present invention, and this computer program is controlled and executed by the processor 301. The processor 301 is used to execute the computer program stored in the memory 303 to implement the content shown in the foregoing method embodiment.

[0126] Among them, the electronic device 300 includes, but is not limited to: mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), PMPs (Portable Multimedia Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The illustrated electronic device 300 is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present invention.

[0127] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of the computer-readable medium include the following: an electrical connection part (electronic device) having one or more wirings, a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other suitable processing as necessary, and then stored in a computer memory.

[0128] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0129] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0130] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0131] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0132] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0133] In the present invention, unless otherwise expressly specified and defined, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Further, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0134] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cell selection method, applied to a terminal device, characterized in that, The method includes: When no cell is selected, obtain the preset frequency range of the terminal device; In the preset frequency range, determine a first target frequency according to the cell selection frequency priority; Select a first cell according to the first target frequency; When the cell reselection condition is met, receive the base station indicated frequency range; In the received base station indicated frequency range, determine a second target frequency according to the cell reselection frequency priority; Reselect to a second cell according to the second target frequency.

2. The method according to claim 1, wherein The step of determining a first target frequency according to the cell selection frequency priority in the preset frequency range includes: In the preset frequency range, select available network mode frequencies as the first target frequency in descending order of the priority order of the cell selection frequency priority; The cell selection frequency priority includes: a first priority of high network mode frequencies and a second priority of low network mode frequencies in the preset frequency range, and the first priority is set to be higher than the second priority.

3. The method according to claim 1, wherein The step of determining a second target frequency according to the cell reselection frequency priority in the received base station indicated frequency range includes: In the base station indicated frequency range, select available network mode frequencies as the second target frequency in descending order of the priority order of the cell reselection frequency priority; Wherein, the cell reselection frequency priority includes: a third priority of high network mode frequencies and / or a fourth priority of low network mode frequencies in the received base station indicated frequencies, and the third priority is set to be higher than the fourth priority.

4. The method according to claim 1, characterized in that, The cell selection frequency priority further includes: When there are multiple high network mode frequencies in the preset frequency range, there is a first relative priority between the high network mode frequencies; And / or, When there are multiple low network mode frequencies in the preset frequency range, there is a second relative priority between the low network mode frequencies.

5. The method according to claim 4, wherein The first relative priority is determined according to the number of historical access cells corresponding to each high network mode frequency.

6. The method according to claim 5, wherein The preset frequency range is the frequency range formed by the frequencies of the historical access cells.

7. The method according to claim 1, wherein When the first cell is a high network mode cell, the cell reselection frequency priority is determined as follows: If the base station indicated frequencies only include high network mode frequencies, then determine the cell reselection frequency priority according to the priority specified by the base station indicated frequencies; Or, If the base station indicated frequencies include target low network mode frequencies with a priority higher than the high network mode frequencies, then delete the target low network mode frequencies from the base station indicated frequencies, and add the target low network mode frequencies to the cell selection frequency priority; determine the cell reselection frequency priority according to the priority specified by the base station indicated frequencies after deletion.

8. The method according to claim 1, characterized in that, When the first cell is a low network mode cell, the cell reselection frequency priority is determined as follows: When the base station indication frequency received indicates an adjustment to the priority, set the high network mode frequency in the base station indication frequency to be higher than the low network mode frequency, and keep the relative priorities between the high network mode frequencies and the relative priorities between the low network mode frequencies unchanged, and determine the cell reselection frequency priority according to the adjusted base station indication frequency.

9. The method according to claim 1, characterized in that, The base station indication frequency includes: a system message indication frequency and / or a dedicated signaling indication frequency; When a dedicated signaling frequency is received, the cell reselection frequency priority is configured to be the priority indicated by the dedicated signaling mode frequency.

10. The method according to claim 1, characterized in that, For reselection to the second cell according to the second target frequency, the method further includes: If no reselectable cell is found according to the second target frequency, select the second cell according to the cell selection frequency priority.

11. A cell selection device, applied to a terminal device, characterized in that, The device includes: A frequency range acquisition module, configured to acquire a preset frequency range of the terminal device when no cell is selected; A first frequency determination module, configured to determine a first target frequency according to the cell selection frequency priority within the preset frequency range; A first cell selection module, configured to select a first cell according to the first target frequency; A frequency range reception module, configured to receive a base station indication frequency range when the cell reselection condition is met; A second frequency determination module, configured to determine a second target frequency according to the cell reselection frequency priority within the received base station indication frequency range; A second cell selection module, reselecting to the second cell according to the second target frequency.

12. The device according to claim 11, wherein, The first frequency determination module is specifically configured to: Within the preset frequency range, select available network mode frequencies as the first target frequency in descending order of the priority order of the cell selection frequency priority; The cell selection frequency priority includes: a first priority of the high network mode frequency and a second priority of the low network mode frequency in the preset frequency range, and the first priority is set to be higher than the second priority.

13. The device according to claim 11, wherein The second frequency determination module is specifically configured to: Within the base station indication frequency range, select available network mode frequencies as the second target frequency in descending order of the priority order of the cell reselection frequency priority; Wherein, the cell reselection frequency priority includes: a third priority of the high network mode frequency and / or a fourth priority of the low network mode frequency in the received base station indication frequency, and the third priority is set to be higher than the fourth priority.

14. The device according to claim 11, characterized in that, The cell selection frequency priority further includes: When there are multiple high network mode frequencies in the preset frequency range, there is a first relative priority between the high network mode frequencies; And / or, When there are multiple low network mode frequencies in the preset frequency range, there is a second relative priority between the low network mode frequencies.

15. The device according to claim 14, characterized in that, The first relative priority is determined according to the number of historical access cells corresponding to each high network mode frequency.

16. The device according to claim 15, characterized in that, The preset frequency range is the frequency range formed by the frequencies of the historical access cells.

17. The device according to claim 11, characterized in that, When the first cell is a high network mode cell, the cell reselection frequency priority is determined in the following manner: If the base station indication frequency only includes high network mode frequencies, determine the cell reselection frequency priority according to the priority specified by the base station indication frequency; Or, If the base station indication frequency includes a target low network mode frequency with a priority higher than that of the high network mode frequency, delete the target low network mode frequency from the base station indication frequency, and add the target low network mode frequency to the cell selection frequency priority; determine the cell reselection frequency priority according to the priority specified by the base station indication frequency after deletion.

18. The device according to claim 11, characterized in that, In the case where the first cell is a low network mode cell, the cell reselection frequency priority is determined as follows: When it is indicated in the received base station indication frequency that the priority is adjusted, set the high network mode frequencies in the base station indication frequency to be higher than the low network mode frequencies, and keep the relative priorities between the high network mode frequencies and the relative priorities between the low network mode frequencies unchanged, and determine the cell reselection frequency priority according to the adjusted base station indication frequency.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the cell selection method according to any one of claims 1-10.

20. An electronic device, characterized in that, Including: A memory and a processor; A computer program is stored on the memory, and when the computer program is executed by the processor, it implements the cell selection method according to any one of claims 1-10.

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