CN114339722A

CN114339722A - Network selection method, device, chip and module equipment

Info

Publication number: CN114339722A
Application number: CN202111672658.3A
Authority: CN
Inventors: 侯德智
Original assignee: Unisoc Chongqing Technology Co Ltd
Current assignee: Unisoc Chongqing Technology Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-12
Anticipated expiration: 2041-12-31
Also published as: CN114339722B

Abstract

The application discloses a network selection method, a network selection device, a chip and module equipment, wherein the method comprises the following steps: acquiring a PLMN of a first cell; if the first area is different from the second area, determining whether one or more MCCs corresponding to the first area are included in the first PLMN list, wherein the first area is an area corresponding to the MCCs in the PLMNs of the first cell, the second area is an area corresponding to the MCCs in the target PLMN, and the target PLMN is a PLMN with the highest priority in the first PLMN list; if the first PLMN list contains one or more MCCs corresponding to the first area, the PLMN containing the one or more MCCs corresponding to the first area is screened from the first PLMN list and used as a second PLMN list; and selecting one PLMN from the second PLMN list for network selection. By adopting the method described in the application, the network residence time of the terminal equipment can be shortened.

Description

Network selection method, device, chip and module equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, a chip, and a module device for network selection.

Background

The terminal equipment needs to go through two steps in the initial network searching process: and starting up and selecting a network, and when the terminal equipment searches a proper cell, the terminal equipment will stay in the cell. Specifically, for the network selection process, after the terminal device is turned on, each PLMN in a Public Land Mobile Network (PLMN) list pre-stored in the SIM card is sorted based on the priority of the PLMN, and network selection is performed based on the sorted PLMN. When the terminal device roams in a foreign place, the PLMN of the place may have a lower priority, which results in a longer network residence time of the terminal device, thereby affecting the user experience.

Disclosure of Invention

The application provides a network selection method, a network selection device, a chip and module equipment, which are beneficial to shortening network residence time when terminal equipment roams.

In a first aspect, the present application provides a method for selecting a network, including: acquiring a Public Land Mobile Network (PLMN) of a first cell; if the first area is different from the second area, determining whether one or more country codes MCC corresponding to the first area are contained in a first PLMN list, wherein the first area is an area corresponding to the MCC in the PLMN of the first cell, the second area is an area corresponding to the MCC in a target PLMN, the target PLMN is a PLMN with the highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in an SIM card; if the first PLMN list contains one or more MCCs corresponding to the first area, the PLMN containing the one or more MCCs corresponding to the first area is screened from the first PLMN list and used as a second PLMN list; and selecting one PLMN from the second PLMN list for network selection.

Based on the method described in the first aspect, it is beneficial to shorten the network residence time of the terminal device during roaming.

In a possible implementation manner, a specific implementation manner of selecting one PLMN from the second PLMN list for network selection is as follows: if the PLMN of the first cell is not the PLMN with the highest priority in the second PLMN list, selecting the PLMN with the highest priority from the second PLMN list for network selection; the method further comprises the following steps: and if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list, the first cell is resided. Based on the implementation, the terminal device is facilitated to select the cell of the PLMN with the highest priority from the second PLMN list for camping.

In a possible implementation manner, a specific implementation manner of selecting a PLMN with the highest priority from the second PLMN list for network selection is as follows: and selecting the PLMN with the highest priority from the second PLMN list for network selection based on the priorities of the plurality of preset frequency bands corresponding to the first area. Based on the implementation mode, the terminal equipment can shorten the network residence time during roaming.

In a possible implementation manner, at least one preset frequency band of the plurality of preset frequency bands includes at least one preset frequency point, and when a network search is performed on the preset frequency band including the preset frequency point, the network search is preferentially performed on the preset frequency point. Based on the implementation mode, the terminal equipment can shorten the network residence time during roaming.

In a possible implementation manner, the priority of the preset frequency band including the preset frequency point is higher than the priority of the preset frequency band not including the preset frequency point.

In a possible implementation manner, after selecting one PLMN from the second PLMN list for network selection, the method further includes: acquiring a PLMN of a second cell; if the PLMN of the second cell is the same as the selected PLMN, the second cell is resided; if the PLMN of the second cell is different from the selected PLMN, recording the PLMN of the second cell in a third PLMN list; and if all PLMNs in the second PLMN list do not search out the cells matched with the PLMNs, selecting one PLMN from the third PLMN list for network selection.

In one possible implementation, the method further includes: and if the first PLMN list does not contain the PLMN of the MCC or MCC corresponding to the first area, the first cell is resided.

In a second aspect, the present application provides a network selection apparatus comprising means for performing the method of the first aspect or any one of its possible implementations.

In a third aspect, the present application provides a chip comprising a processor and a communication interface, the processor being configured to implement the method of the above first aspect of the chip or any possible implementation manner thereof.

In a fourth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module, and a chip, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; the chip is configured to perform the method of the first aspect or any one of its possible implementations.

In a fifth aspect, an embodiment of the present invention discloses a network selection apparatus, where the network selection apparatus includes a memory and a processor, the memory is used for storing a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method in the first aspect or any possible implementation manner thereof.

In a sixth aspect, the present application provides a computer-readable storage medium having stored thereon computer-readable instructions that, when run on a communication device, cause the communication device to perform the method of the first aspect or any possible implementation thereof.

In a seventh aspect, the present application provides a computer program or a computer program product comprising code or instructions which, when run on a computer, cause the computer to perform the method as in the first aspect or any one of its possible implementations.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

fig. 2 is a schematic flowchart of a network selection method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a network selection apparatus according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another network selection apparatus provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items.

It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For better understanding of the embodiments of the present application, the following first introduces a system architecture related to the embodiments of the present application:

the technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a fifth generation (5G) system or a new radio system (UMTS), and future communication systems.

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application, to which the scheme in the present application is applicable. The communication system may include a network device and at least one terminal device, and fig. 1 exemplifies that the communication system includes the network device and 3 terminal devices.

Terminal equipment

The terminal device includes a device for providing voice and/or data connectivity to a user, for example, the terminal device is a device with wireless transceiving function, and can be deployed on land, including indoors or outdoors, hand-held, worn or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), 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), a wearable terminal device, and the like. The embodiments of the present application do not limit the application scenarios. A terminal may also be referred to as a terminal device, User Equipment (UE), access terminal device, in-vehicle terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, among others. The terminals may also be fixed or mobile. In this embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, such as a chip system or a combined device and a component capable of implementing the function of the terminal device, and the apparatus may be installed in the terminal device.

Network device

The network device may be a base station (base station), an evolved NodeB (eNodeB), a Transmission Reception Point (TRP), a next generation NodeB (gNB) in a fifth generation (5th generation, 5G) mobile communication system, a next generation base station in a sixth generation (6th generation, 6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The network device may also be a module or a unit that performs part of the functions of the base station, for example, a Centralized Unit (CU) or a Distributed Unit (DU). The CU here completes the functions of a radio resource control protocol and a packet data convergence layer protocol (PDCP) of the base station, and may also complete the functions of a Service Data Adaptation Protocol (SDAP); the DU performs functions of a radio link control (rlc) layer and a Media Access Control (MAC) layer of the base station, and may also perform functions of a part of a physical layer or all of the physical layer. For the above detailed description of the protocol layers, reference may be made to the related technical specification of the third generation partnership project (3 GPP). The network device may be a macro base station, a micro base station or an indoor station, a relay node or a donor node, and the like. In the embodiment of the present application, the apparatus for implementing the function of the network device may be the network device itself, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system or a combined device and a component capable of implementing the function of the access network device, and the apparatus may be installed in the network device. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

In order to shorten the network residence time of roaming terminal equipment, the application provides a network selection method, a device, a chip and module equipment. The method, the apparatus, the chip, and the module device for network selection provided in the embodiments of the present application are further described in detail below.

Fig. 2 is a schematic flowchart of a network selection method according to an embodiment of the present application. As shown in fig. 2, the method for selecting a network includes steps 201 to 204. The method execution subject shown in fig. 2 may be a terminal device. Alternatively, the method execution body shown in fig. 2 may be a chip in the terminal device. In the embodiment of the present application, a main execution body taking a terminal device as a method is taken as an example for description, and details are not described later.

201. The terminal device obtains a Public Land Mobile Network (PLMN) of the first cell.

In the embodiment of the present application, the PLMN includes a Mobile Country Code (MCC) and a Mobile Network Code (MNC). The MCCs are uniformly distributed and managed by International Telecommunications Union (ITU), and can be used for identifying the country to which the PLMN belongs, and one country corresponds to one or more MCCs; the MNC may be used to identify the mobile network operator to which the PLMN corresponds, typically one operator in one country to one PLMN.

In a possible implementation manner, a specific implementation manner of the terminal device acquiring the PLMN of the first cell is as follows: the terminal device receives a system message from the first cell, wherein the system message carries the PLMN of the first cell. The terminal device may determine whether the area where the current terminal device is located is in the roaming state according to the MCC included in the PLMN of the first cell.

Optionally, before the terminal device acquires the PLMN of the first cell, the method further includes: the terminal equipment responds to the starting operation of the user; and the terminal equipment selects the PLMN with the highest priority from the first PLMN list as a target PLMN, and network selection is carried out based on the target PLMN. The first cell is searched by the terminal device, and the terminal device determines the current area according to the MCC included in the PLMN of the first cell, which is beneficial for the terminal device to determine whether the current terminal device is in a roaming state in time.

202. If the first area is different from the second area, the terminal device determines whether the first PLMN list includes one or more MCCs corresponding to the first area, the first area is an area corresponding to the MCCs in the PLMNs of the first cell, the second area is an area corresponding to the MCCs in the target PLMN, the target PLMN is a PLMN with the highest priority in the first PLMN list, and the first PLMN list includes a plurality of PLMNs pre-stored in the SIM card.

In this embodiment of the present application, the first area refers to a country corresponding to an MCC in a PLMN of the first cell, and the second area refers to a country corresponding to an MCC in a target PLMN. When the operator leaves the factory for configuration, a plurality of PLMNs can be pre-stored as a first PLMN list in the SIM card, so that the terminal device can preferentially select a cell corresponding to the pre-stored PLMN for residence.

In general, comparing whether the first area and the second area are the same can determine whether the terminal device is currently in a roaming state. For example, it is assumed that the MCCs corresponding to the a region include two MCCs, i.e., a first MCC and a second MCC, respectively, the B region only corresponds to one MCC, i.e., a third MCC, and the MCC of the target PLMN is the first MCC. If the MCC in the PLMN of one cell searched by the terminal device is the second MCC, it can be determined that the first area and the second area are both the a area, and the current terminal device is not in the roaming state; if the MCC in the PLMN of one cell searched by the terminal device is the third MCC, it may be determined that the first area is the B area, which is different from the second area, and the current terminal device is in the roaming state. Based on the method, the terminal equipment can determine whether the terminal equipment is in the roaming state in time.

In one possible implementation manner, the terminal device may determine whether the first area and the second area are the same, and there are two implementation manners:

the first realization mode is as follows: the first area corresponds to an MCC, and the terminal device only needs to determine whether the MCC of the target PLMN is the same as the MCC corresponding to the first area, if so, the first area is the same as the second area, and if not, the first area is different from the second area.

The second implementation manner is as follows: the first area corresponds to a plurality of MCCs, and the terminal device only needs to determine whether the MCC of the target PLMN is one of the plurality of MCCs corresponding to the first area. If the MCC of the target PLMN is one of the MCCs corresponding to the first area, the first area is the same as the second area; if the MCC of the PLMN is not one of the MCCs corresponding to the first region, the first region is different from the second region.

In one possible implementation, the method further includes: and if the target PLMN is the same as the PLMN of the first cell, the terminal equipment resides in the first cell. And if the first area is the same as the second area but the target PLMN is different from the PLMN of the first cell, the terminal equipment continues to select the network. If the terminal device cannot search the matched cell based on the target PLMN, the terminal device selects a PLMN from the third PLMN list for network selection, and it is to be supplemented that, when the terminal device performs network selection based on the target PLMN, if the searched PLMN of the cell does not match the target PLMN, the PLMN of the cell is recorded in the third PLMN list.

203. If the first PLMN list includes one or more MCCs corresponding to the first area, the terminal device screens a PLMN including the one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list.

In this embodiment, if the first area only corresponds to one MCC, the MCCs of the PLMNs in the second PLMN list are all MCCs corresponding to the first area; if the first region corresponds to a plurality of MCCs, the MCC of any one PLMN in the second PLMN list is one of the plurality of MCCs corresponding to the first region. For example, it is assumed that the MCC corresponding to the first area includes a first MCC and a second MCC, the MCC corresponding to the second area is a third MCC, the first PLMN list includes PLMN1, PLMN2, and PLMN3, the MCC of PLMN1 is a first MCC, the MCC of PLMN2 is a second MCC, the MCC of PLMN3 is a third MCC, the terminal device selects a PLMN including one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list, and the second PLMN list includes PLMN1 and PLMN 2. Based on the method, when the terminal equipment determines that the terminal equipment is currently located in the first area, the terminal equipment selects one PLMN from the second PLMN list for network selection, and the method is beneficial to shortening the network residence time of the terminal equipment.

In one possible implementation, the method further includes: and if the first PLMN list does not contain the PLMN of the MCC or MCC corresponding to the first area, the first cell is resided. Because the first PLMN list does not include the PLMN of the one or more MCCs corresponding to the first area, when the terminal device is located in the first area, all PLMNs in the first PLMN list cannot search for a cell matching therewith, and therefore the terminal device resides in the first cell, which can shorten the network residence time.

204. And the terminal equipment selects one PLMN from the second PLMN list for network selection.

In a possible implementation manner, the terminal device selects one PLMN from the second PLMN list for network selection, and the specific implementation manner is: and if the PLMN of the first cell is not the PLMN with the highest priority in the second PLMN list, the terminal equipment selects the PLMN with the highest priority from the second PLMN list to select the network. Based on the implementation mode, the method is beneficial to enabling the terminal equipment to select the PLMN with high priority for residing.

Wherein, the method also comprises: and if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list, the first cell is resided. Based on the realization mode, the method is favorable for the terminal equipment to reside in the first cell in time, thereby shortening the network residence time.

Optionally, a specific implementation manner of selecting, by the terminal device, the PLMN with the highest priority from the second PLMN list for network selection is as follows: and the terminal equipment selects the PLMN with the highest priority from the second PLMN list for network selection based on the priorities of a plurality of preset frequency bands corresponding to the first area. When the terminal equipment selects the network, the cell signals can be acquired based on different frequency bands, normally, operators in each area are divided into fixed frequency bands, and the network equipment usually sends the cell signals on the fixed frequency bands divided by the operators.

Further optionally, at least one preset frequency band in the plurality of preset frequency bands includes at least one preset frequency point, and when a PLMN with the highest priority is selected from the second PLMN list on the preset frequency band including the preset frequency point for network selection, a PLMN with the highest priority is preferably selected from the second PLMN list on the preset frequency point for network selection. The priority of the preset frequency band containing the preset frequency point is higher than that of the preset frequency band not containing the preset frequency point. For example, it is assumed that the first region corresponds to a preset frequency band 1 and a preset frequency band 2, where the preset frequency band 1 includes a preset frequency point, and the preset frequency band 2 does not include a preset frequency band, so that the priority of the preset frequency band 1 is higher than that of the preset frequency band 2. When the terminal equipment searches for the network, the terminal equipment preferentially searches based on the preset frequency point, and if the terminal equipment does not search for the cell, the terminal equipment searches based on other frequency points in the preset frequency band 1 except the preset frequency point; if the cell is not searched based on the preset frequency band 1, the terminal equipment searches the network based on the preset frequency band 2; if the cell is not searched based on the preset frequency band 2, the terminal device searches the network based on other frequency bands except the preset frequency band 1 and the preset frequency band 2. Based on the implementation, the network residence time can be shortened.

In a possible implementation manner, after the terminal device selects one PLMN from the second PLMN list for network selection, the method further includes: the terminal equipment acquires the PLMN of the second cell. The terminal device determines whether the PLMN of the second cell is the same as the selected PLMN. If the two are the same, the terminal equipment resides in a second cell; and if not, the terminal equipment records the PLMN of the second cell in a third PLMN list. And if all PLMNs in the second PLMN list do not search out the cells matched with the PLMNs, the terminal equipment selects one PLMN from the third PLMN list for network selection. Based on the implementation mode, when the terminal equipment cannot search the cell which can be resided based on the second PLMN list, the cell can be searched through the third PLMN list, and the situation that the terminal equipment cannot reside in the cell for a long time is avoided.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a network selection apparatus according to an embodiment of the present invention, where the network selection apparatus may be a terminal device or an apparatus (e.g., a chip) having a function of the terminal device. Specifically, as shown in fig. 3, the network selection apparatus 30 may include an obtaining unit 301, a processing unit 302, and a searching unit 303.

The acquiring unit 301 is configured to acquire a public land mobile network PLMN of a first cell; the processing unit 302 is configured to determine whether the first PLMN list includes one or more MCCs corresponding to the first area if the first area is different from the second area, where the first area is an area corresponding to an MCC in a PLMN of the first cell, the second area is an area corresponding to an MCC in a target PLMN, the target PLMN is a PLMN with a highest priority in the first PLMN list, and the first PLMN list includes multiple PLMNs pre-stored in the SIM card; the processing unit 302 is further configured to, if the first PLMN list includes one or more MCCs corresponding to the first area, screen a PLMN including the one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list; the searching unit 303 is configured to select a PLMN from the second PLMN list for network selection.

In a possible implementation manner, when the searching unit 303 selects one PLMN from the second PLMN list for network selection, the searching unit 303 is specifically configured to: if the PLMN of the first cell is not the PLMN with the highest priority in the second PLMN list, selecting the PLMN with the highest priority from the second PLMN list for network selection; the network selection apparatus 30 further includes a residence unit, configured to reside in the first cell if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list.

In a possible implementation manner, when the searching unit 303 selects a PLMN with the highest priority from the second PLMN list for network selection, the searching unit 303 is specifically configured to: and selecting the PLMN with the highest priority from the second PLMN list for network selection based on the priorities of the plurality of preset frequency bands corresponding to the first area.

In a possible implementation manner, at least one preset frequency band of the plurality of preset frequency bands includes at least one preset frequency point, and when a network search is performed on the preset frequency band including the preset frequency point, the network search is preferentially performed on the preset frequency point.

In a possible implementation manner, after the searching unit 303 selects a PLMN from the second PLMN list for network selection, the obtaining unit 301 is further configured to obtain a PLMN of the second cell; the residence unit is also used for residing in the second cell if the PLMN of the second cell is the same as the selected PLMN; the processing unit 302 is further configured to record the PLMN of the second cell in a third PLMN list if the PLMN of the second cell is different from the selected PLMN; the searching unit 303 is further configured to select a PLMN from the third PLMN list for network selection if all PLMNs in the second PLMN list do not search for a cell matching therewith.

In a possible implementation manner, the camping unit is further configured to camp on the first cell if the first PLMN list does not include the PLMN of the one or more MCCs corresponding to the first area.

The embodiment of the application also provides a chip, and the chip can execute the relevant steps of the terminal device in the embodiment of the method. The chip, including a processor and a communication interface, the processor configured to cause the chip to perform the operations of: acquiring a Public Land Mobile Network (PLMN) of a first cell; if the first area is different from the second area, determining whether one or more country codes MCC corresponding to the first area are contained in a first PLMN list, wherein the first area is an area corresponding to the MCC in the PLMN of the first cell, the second area is an area corresponding to the MCC in a target PLMN, the target PLMN is a PLMN with the highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in an SIM card; if the first PLMN list contains one or more MCCs corresponding to the first area, the PLMN containing the one or more MCCs corresponding to the first area is screened from the first PLMN list and used as a second PLMN list; and selecting one PLMN from the second PLMN list for network selection.

In a possible implementation manner, when the chip selects one PLMN from the second PLMN list for network selection, the chip specifically performs the following steps: if the PLMN of the first cell is not the PLMN with the highest priority in the second PLMN list, selecting the PLMN with the highest priority from the second PLMN list for network selection; and if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list, the first cell is resided.

In a possible implementation manner, when the chip selects a PLMN with the highest priority from the second PLMN list for network selection, the chip specifically performs the following steps: and selecting the PLMN with the highest priority from the second PLMN list for network selection based on the priorities of the plurality of preset frequency bands corresponding to the first area.

In a possible implementation manner, after the chip performs the step of selecting one PLMN from the second PLMN list for network selection, the chip further performs the following steps: acquiring a PLMN of a second cell; if the PLMN of the second cell is the same as the selected PLMN, the second cell is resided; if the PLMN of the second cell is different from the selected PLMN, recording the PLMN of the second cell in a third PLMN list; and if all PLMNs in the second PLMN list do not search out the cells matched with the PLMNs, selecting one PLMN from the third PLMN list for network selection.

In one possible implementation, the processor is configured to cause the chip to perform the following operations: and if the first PLMN list does not contain the PLMN of the MCC or MCC corresponding to the first area, the first cell is resided.

In a possible implementation, the chip includes at least one processor, at least one first memory, and at least one second memory; the at least one first memory and the at least one processor are interconnected through a line, and instructions are stored in the first memory; the at least one second memory and the at least one processor are interconnected through a line, and the second memory stores the data required to be stored in the method embodiment.

For each device or product applied to or integrated in the chip, each module included in the device or product may be implemented by hardware such as a circuit, or at least a part of the modules may be implemented by a software program running on a processor integrated in the chip, and the rest (if any) part of the modules may be implemented by hardware such as a circuit.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a network selection apparatus according to an embodiment of the present invention. The network selection apparatus 400 may include a memory 401 and a processor 402. Optionally, a communication interface 403 is also included. The memory 401, processor 402, and communication interface 403 are connected by one or more communication buses. Wherein the communication interface 403 is controlled by the processor 402 for transceiving information.

Memory 401 may include both read-only memory and random-access memory, and provides instructions and data to processor 402. A portion of the memory 401 may also include non-volatile random access memory.

The communication interface 403 is used to receive or transmit data.

The Processor 402 may be a Central Processing Unit (CPU), and the Processor 402 may also be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor, and optionally, the processor 402 may be any conventional processor or the like. Wherein:

a memory 401 for storing program instructions.

A processor 402 for calling program instructions stored in the memory 401.

The processor 402 calls the program instructions stored in the memory 401 to make the network selection apparatus 400 execute the method executed by the terminal device in the above-mentioned method embodiment.

As shown in fig. 5, fig. 5 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The module device 50 can perform the steps related to the terminal device in the foregoing method embodiments, and the module device 500 includes: a communication module 501, a power module 502, a memory module 503, and a chip module 504.

The power module 502 is used for providing power for the module device; the storage module 503 is used for storing data and instructions; the communication module 501 is used for performing internal communication of module equipment or for performing communication between the module equipment and external equipment; the chip module 504 is used for executing the method executed by the terminal device in the above method embodiment.

It should be noted that, for details that are not mentioned in the embodiment corresponding to fig. 5 and fig. 4 and specific implementation manners of each step, reference may be made to the embodiment shown in fig. 3 and the foregoing contents, and details are not described here again.

Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments is implemented.

Embodiments of the present application further provide a computer program product, where when the computer program product runs on a processor, the method flow of the above method embodiments is implemented.

Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit. For example, each module/unit included in each apparatus or product applied to or integrated in a chip may be implemented by hardware such as a circuit, or at least a part of the modules/units may be implemented by a software program running on an integrated processor in the chip, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same piece (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated inside the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device or product applied to or integrated in the terminal, the modules/units included in the device or product may all be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some of the modules/units may be implemented by software programs running on a processor integrated in the terminal, and the rest (if any) of the modules/units may be implemented by hardware such as a circuit.

It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for selecting a network, the method comprising:

acquiring a Public Land Mobile Network (PLMN) of a first cell;

if the first area is different from the second area, determining whether a first PLMN list contains one or more country codes MCC corresponding to the first area, wherein the first area is an area corresponding to the MCC in the PLMN of the first cell, the second area is an area corresponding to the MCC in the target PLMN, the target PLMN is a PLMN with the highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in an SIM card;

if the first PLMN list contains one or more MCCs corresponding to the first region, screening a PLMN containing the one or more MCCs corresponding to the first region from the first PLMN list as a second PLMN list;

and selecting one PLMN from the second PLMN list for network selection.

2. The method of claim 1, wherein selecting a PLMN from the second PLMN list for network selection comprises:

if the PLMN of the first cell is not the PLMN with the highest priority in the second PLMN list, selecting the PLMN with the highest priority from the second PLMN list for network selection;

the method further comprises the following steps:

and if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list, camping in the first cell.

3. The method of claim 2, wherein selecting the PLMN with the highest priority from the second PLMN list for network selection comprises:

and selecting the PLMN with the highest priority from the second PLMN list for network selection based on the priorities of a plurality of preset frequency bands corresponding to the first area.

4. The method according to claim 3, wherein at least one of the plurality of preset frequency bands comprises at least one preset frequency point, and when performing network searching on a preset frequency band comprising the preset frequency point, network searching is preferentially performed on the preset frequency point.

5. The method according to claim 4, wherein the preset frequency bands containing preset frequency points have higher priority than the preset frequency bands not containing preset frequency points.

6. The method according to any of claims 2-4, wherein after selecting a PLMN from the second PLMN list for network selection, the method further comprises:

acquiring a PLMN of a second cell;

if the PLMN of the second cell is the same as the selected PLMN, residing in the second cell;

if the PLMN of the second cell is different from the selected PLMN, recording the PLMN of the second cell in a third PLMN list;

and if all PLMNs in the second PLMN list do not search out the cells matched with the PLMNs, selecting one PLMN from the third PLMN list for network selection.

7. The method of claim 1, further comprising:

and if the first PLMN list does not contain one or more MCCs corresponding to the first area, camping on the first cell.

8. A network selection device is characterized by comprising an acquisition unit, a processing unit and a search unit, wherein:

the acquiring unit is used for acquiring a Public Land Mobile Network (PLMN) of a first cell;

the processing unit is configured to determine whether a first PLMN list includes one or more country codes MCC corresponding to the first area if the first area is different from a second area, where the first area is an area corresponding to a mobile country code MCC in a PLMN of the first cell, the second area is an area corresponding to an MCC in the target PLMN, the target PLMN is a PLMN with a highest priority in the first PLMN list, and the first PLMN list includes a plurality of PLMNs pre-stored in a SIM card;

the processing unit is further configured to, if the first PLMN list includes one or more MCCs corresponding to the first area, screen a PLMN including the one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list;

the searching unit is configured to select a PLMN from the second PLMN list for network selection.

9. A chip comprising a processor and a communication interface, the processor being configured to cause the chip to perform the method of any of claims 1 to 7.

10. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and instructions;

the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;

the chip is used for executing the method of any one of claims 1 to 7.

11. A network selection apparatus comprising a memory for storing a computer program comprising program instructions and a processor configured to invoke the program instructions to cause the network selection apparatus to perform the method of any one of claims 1 to 7.

12. A computer readable storage medium having computer readable instructions stored thereon which, when run on a communication device, cause the communication device to perform the method of any of claims 1-7.