CN114339722B

CN114339722B - Network selection method, device, chip and module equipment

Info

Publication number: CN114339722B
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: 2023-12-01
Anticipated expiration: 2041-12-31
Also published as: CN114339722A

Abstract

The application discloses a method, a device, a chip and a module device for selecting a network, wherein the method comprises the following steps: acquiring 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 contained in the 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 the target PLMN, and the target PLMN is the 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, screening PLMN containing the one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list; and selecting one PLMN from the second PLMN list for network selection. The method is beneficial to shortening the residence time of the terminal equipment.

Description

Network selection method, device, chip and module equipment

Technical Field

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

Background

The terminal equipment needs to go through two steps in the initial network searching process: starting up and selecting network, when terminal device searches out suitable cell, it will reside in the cell. Specifically, for the network selection process, after the terminal device is started, each PLMN in a public land mobile network (PublicLandMobileNetwork, PLMN) list pre-stored in the SIM card is ordered based on the priority of the PLMN, and network selection is performed based on the ordered PLMNs. When the terminal device roams in a foreign area, a situation may occur that the PLMN of the foreign area has a lower priority, which results in a longer residence time of the terminal device, thereby affecting the user experience.

Disclosure of Invention

The application provides a network selecting method, a network selecting device, a network selecting chip and a network selecting module device, which are beneficial to shortening network residence time of terminal equipment during roaming.

In a first aspect, the present application provides 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 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 MCC in the PLMN of the first cell, the second area is an area corresponding to MCC in a target PLMN, the target PLMN is the PLMN with the highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in the SIM card; if the first PLMN list contains one or more MCCs corresponding to the first area, screening PLMN containing the one or more MCCs corresponding to the first area from the first PLMN list 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, the residence time of the terminal equipment during roaming is advantageously shortened.

In one possible implementation manner, the specific implementation manner of selecting one PLMN from the second PLMN list to perform network selection is: 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 steps of: 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 manner, the terminal equipment is favorable for selecting the cell of the PLMN with the highest priority from the second PLMN list to reside.

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

In one 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 searching for a network on the preset frequency band including the preset frequency point, searching for a network on the preset frequency point is performed preferentially. Based on this implementation, the terminal device can shorten the residence time when roaming.

In one possible implementation, the preset frequency band including the preset frequency point has a higher priority than the preset frequency band not including the preset frequency point.

In one possible implementation, after selecting one PLMN from the second PLMN list for network selection, the method further includes: acquiring 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 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: if the first PLMN list does not include PLMNs of one or more MCCs corresponding to the first area, camping on the first cell.

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

In a third aspect, the application provides a chip comprising a processor and a communication interface, the processor being configured to cause the chip to perform the method of the first aspect or any one of its possible implementations.

In a fourth aspect, the present application provides a module apparatus, the module apparatus comprising a communication module, a power module, a storage module, and a 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 the module equipment or carrying out communication between the module equipment and external equipment; the chip is for performing the method of the first aspect described above or any one of its possible implementations.

In a fifth aspect, an embodiment of the present application discloses a network selection device, the network selection device comprising a memory for storing a computer program, the computer program comprising program instructions, and a processor configured to invoke the program instructions to perform the method of the first aspect or any of its possible implementation manners.

In a sixth aspect, the application provides a computer readable storage medium having stored therein computer readable instructions which, when run on a communication device, cause the communication device to perform the method of the first aspect or any of its possible implementations.

In a seventh aspect, the application provides a computer program or 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 possible implementation thereof.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

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

fig. 4 is a schematic structural diagram of another network selecting device according to an embodiment of the present application;

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

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the 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 to the contrary. It should also be understood that the term "and/or" as used in this disclosure refers to and encompasses any or all possible combinations of one or more of the listed items.

It should be noted that, in the description and claims of the present application and in the above figures, the terms "first," "second," "third," etc. are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and any variations 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 or inherent to such process, method, article, or apparatus.

For a better understanding of the embodiments of the present application, the following first describes 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, such as: global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA) systems, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, fifth generation (5th generation,5G) systems or new radio, NR) future communication systems, and the like.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application, and the scheme in the present application is applicable to the communication system. The communication system may comprise a network device and at least one terminal device, fig. 1 taking the communication system comprising a network device and 3 terminal devices as examples.

1. Terminal equipment

The terminal device comprises a device for providing voice and/or data connectivity to a user, for example, the terminal device is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal may be a mobile phone, a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in an industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in a self driving (self driving), a wireless terminal in a remote medical (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart home), a wireless terminal in a smart home (smart home), a wearable terminal device, or the like. The embodiment of the application does not limit the application scene. A terminal may also be referred to as a terminal device, user Equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, UE apparatus, or the like. The terminal may also be fixed or mobile. In the embodiment of the present application, the device for implementing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system or a combination device or a component capable of implementing the function of the terminal device, and the device may be installed in the terminal device.

2. Network equipment

The network device may be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (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, etc. The network device may also be a module or unit that performs a function of the base station part, for example, may be a Central Unit (CU) or may be a Distributed Unit (DU). The CU can complete the functions of a radio resource control protocol and a packet data convergence layer protocol (packet data convergence protocol, PDCP) of the base station and can also complete the functions of a service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of a radio link control layer and a medium access control (medium access control, MAC) layer of the base station, and may also perform the functions of a part of or all of the physical layers. For a detailed description of the various protocol layers described above, reference may be made to the relevant technical specifications of the third generation partnership project (3rd generation partnership project,3GPP). The network device may be a macro base station, a micro base station, an indoor station, a relay node, a donor node, or the like. In the embodiment of the present application, the means for implementing the function of the network device may be the network device itself, or may be a means capable of supporting the network device to implement the function, for example, a chip system or a combination device or a component capable of implementing the function of the access network device, where the means may be installed in the network device. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the network equipment.

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 device, the chip and the module equipment for selecting the network provided by the embodiment of the application are further described in detail below.

Fig. 2 is a flow chart of a method for selecting a network 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 body 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. The embodiment of the application is described by taking the execution main body of the terminal equipment as an example, and the description is omitted.

201. The terminal device acquires a public land mobile network (Public Land Mobile Network, PLMN) of the first cell.

In an embodiment of the application, the PLMN includes a mobile country code (Mobile Country Code, MCC) and a mobile network number (Mobile Network Code, MNC). Wherein the MCCs are uniformly distributed and managed by the International Union of technology (International Telecommunication 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 of a country corresponds to one PLMN.

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

Optionally, before the terminal device acquires the PLMN of the first cell, the method further comprises: the terminal equipment responds to the starting operation of a user; and the terminal equipment selects the PLMN with the highest priority from the first PLMN list as a target PLMN, and performs network selection based on the target PLMN. The first cell is the first cell searched by the terminal equipment, and the terminal equipment determines the current area according to the MCC included in the PLMN of the first cell, so that the terminal equipment is favorable for timely determining whether the current terminal equipment is in a roaming state.

202. If the first area is different from the second area, the terminal device determines whether the first PLMN list contains one or more MCCs corresponding to the first area, 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 includes a plurality of PLMNs prestored in the SIM card.

In the embodiment of the present application, the first area refers to a country corresponding to MCC in the PLMN of the first cell, and the second area refers to a country corresponding to MCC in the target PLMN. When the operator leaves the factory, a plurality of PLMNs are prestored as a first PLMN list in the SIM card, so that the terminal equipment can preferentially select a cell corresponding to the prestored PLMNs to reside.

In general, it can be determined whether the terminal device is currently in a roaming state by comparing whether the first area and the second area are identical. For example, assume that the MCC corresponding to the a area includes two MCCs, namely a first MCC and a second MCC, the B area corresponds to only one MCC, and is a third MCC, and the MCC of the target PLMN is the first MCC. If the terminal equipment searches that the MCC in the PLMN of one cell is the second MCC, the first area and the second area can be determined to be the A area, and the current terminal equipment is not in a roaming state; if the terminal device searches that the MCC in the PLMN of one cell 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 roaming state is currently in time.

In one possible implementation manner, the terminal device determines whether the first area and the second area are the same or not there may be two implementation manners:

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

In one possible implementation, the method further includes: if the target PLMN is the same as the PLMN of the first cell, the terminal device resides in the first cell. 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 for a matched cell based on the target PLMN, the terminal device selects one PLMN from the third PLMN list to select a network, and if the terminal device does not match the target PLMN when selecting a network based on the target PLMN, the terminal device records the PLMN of the cell 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 one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list.

In the embodiment of the present application, if the first area corresponds to only one MCC, the MCCs of 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 PLMN in the second PLMN list is one of the plurality of MCCs corresponding to the first region. For example, assuming 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 the first MCC, the MCC of PLMN2 is the second MCC, the MCC of PLMN3 is the third MCC, and the terminal device screens out a PLMN including one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list, where PLMN1 and PLMN2 are included. Based on the method, when the terminal equipment determines that the terminal equipment is currently in the first area, the terminal equipment selects one PLMN from the second PLMN list to select the network, so that the terminal equipment is beneficial to shortening the residence time.

In one possible implementation, the method further includes: if the first PLMN list does not include PLMNs of one or more MCCs corresponding to the first area, camping on the first cell. Because the first PLMN list does not contain one or more PLMNs of MCCs corresponding to the first area, when the terminal equipment is located in the first area, all PLMNs in the first PLMN list cannot search for a cell matched with the first PLMN list, so that the terminal equipment resides in the first cell, and the residence time can be shortened.

204. And the terminal equipment selects one PLMN from the second PLMN list to select the network.

In one possible implementation manner, the terminal device selects one PLMN from the second PLMN list to perform network selection, and the specific implementation manner is as follows: 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 a network. Based on the implementation, the terminal equipment is beneficial to selecting the cells of the PLMN with high priority to reside.

Wherein the method further comprises: 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 manner, the terminal equipment is beneficial to timely residing in the first cell, so that the residence time is shortened.

Optionally, the specific implementation manner of selecting the PLMN with the highest priority from the second PLMN list by the terminal device for network selection is as follows: and the terminal equipment selects a PLMN with the highest priority from the second PLMN list to select the network based on the priorities of a plurality of preset frequency bands corresponding to the first area. When the terminal equipment selects the network, the terminal equipment can acquire the cell signals based on different frequency bands, and normally, operators in each area divide fixed frequency bands, and the network equipment normally transmits the cell signals on the fixed frequency bands divided by the operators, so that when the terminal equipment selects the network, the terminal equipment preferentially searches based on the frequency bands corresponding to the operators in the area, and the network residence time can be shortened.

Further optionally, at least one preset frequency band of the plurality of preset frequency bands includes at least one preset frequency point, and when selecting the PLMN with the highest priority from the second PLMN list on the preset frequency band including the preset frequency point for network selection, the PLMN with the highest priority is preferentially 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 preset frequency band 1 has a higher priority than the preset frequency band 2. When searching the network, the terminal equipment searches based on the preset frequency point preferentially, and searches based on other frequency points in the preset frequency band 1 except the preset frequency point if the cell is not searched; if no cell is searched based on the preset frequency band 1, the terminal equipment searches the network based on the preset frequency band 2; if no cell is searched based on the preset frequency band 2, the terminal equipment searches the network based on other frequency bands except the preset frequency band 1 and the preset frequency band 2. Based on this implementation, the residence time can be shortened.

In one possible implementation, 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 cells are the same, the terminal equipment resides in the second cell; if not, the terminal device records the PLMN of the second cell in a third PLMN list. If all PLMNs in the second PLMN list do not search the matched cells, the terminal equipment selects one PLMN from the third PLMN list for network selection. Based on the implementation manner, when the terminal equipment cannot search the cell which can reside based on the second PLMN list, the cell can be searched through the third PLMN list, so that 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 selecting device according to an embodiment of the present application, where the network selecting device may be a terminal device or a device (e.g. a chip) with a function of the terminal device. Specifically, as shown in fig. 3, the network selecting device 30 may include an acquiring 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 the first cell; the processing unit 302 is configured to determine whether one or more country code MCCs corresponding to the first area are included in the first PLMN list 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 a plurality of 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 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 one PLMN from the second PLMN list for network selection.

In one possible implementation, 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 selecting device 30 further includes a camping unit, configured to camp on the first cell if the PLMN of the first cell is the PLMN with the highest priority in the second PLMN list.

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

In one 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 searching for a network on the preset frequency band including the preset frequency point, searching for a network on the preset frequency point is performed preferentially.

In a possible implementation manner, after the searching unit 303 selects one PLMN from the second PLMN list for network selection, the acquiring unit 301 is further configured to acquire a PLMN of the second cell; a residence unit, further configured to, if the PLMN of the second cell is the same as the selected PLMN, residence the second cell; 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 one PLMN from the third PLMN list for network selection if all PLMNs in the second PLMN list do not search for a cell matching the second PLMN list.

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

The embodiment of the application also provides a chip which can execute the relevant steps of the terminal equipment in the embodiment of the method. The chip includes a processor and a communication interface, the processor configured to cause the chip to: 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 MCC in the PLMN of the first cell, the second area is an area corresponding to MCC in a target PLMN, the target PLMN is the PLMN with the highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in the SIM card; if the first PLMN list contains one or more MCCs corresponding to the first area, screening PLMN containing the one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list; and selecting one PLMN from the second PLMN list for network selection.

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

In one possible implementation, after the chip performs the step of selecting one PLMN from the second PLMN list for network selection, the chip further performs the steps of: acquiring 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 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 further cause the chip to: if the first PLMN list does not include PLMNs of one or more MCCs corresponding to the first area, camping on the first cell.

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

For each device and product applied to or integrated in the chip, each module contained in the device and product can be realized in a hardware mode such as a circuit, or at least part of the modules can be realized in a software program, the software program runs on a processor integrated in the chip, and the rest (if any) of the modules can be realized in a hardware mode such as a circuit.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a network selecting device according to an embodiment of the application. The network selection apparatus 400 may include a memory 401, 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 to transmit and receive information.

Memory 401 may include read-only memory and random access memory, and provides instructions and data to processor 402. A portion of 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 (Central Processing Unit, CPU), the processor 402 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor, but in the alternative, the processor 402 may be any conventional processor or the like. Wherein:

memory 401 is used to store program instructions.

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

The processor 402 invokes the program instructions stored in the memory 401 to cause the network selection device 400 to execute the method executed by the terminal device in the above-described 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 application. The module device 50 may perform the steps related to the terminal device in the foregoing method embodiment, and the module device 500 includes: a communication module 501, a power module 502, a memory module 503 and a chip module 504.

Wherein, the power module 502 is used for providing power for the module equipment; the storage module 503 is used for storing data and instructions; the communication module 501 is used for performing communication inside the module device or for communicating between the module device and an external device; the chip module 504 is configured to perform the method performed by the terminal device in the method embodiment described above.

It should be noted that, details not mentioned in the embodiments corresponding to fig. 5 and fig. 4 and specific implementation manners of each step may refer to the embodiment shown in fig. 3 and the foregoing details, which are not repeated herein.

The embodiment of the application also provides a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and when the computer readable storage medium runs on a processor, the method flow of the embodiment of the method is realized.

The present application also provides a computer program product, which when run on a processor, implements the method flows of the method embodiments described above.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, each module/unit included in each device or product applied to or integrated in the chip may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on an integrated processor inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, the included modules/units may all be implemented in 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 modules/units may be implemented in a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) some modules/units may be implemented in hardware such as a circuit.

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

The description of the embodiments provided by the application can be referred to each other, and the description of each embodiment has emphasis, and the part of the detailed description of one embodiment can be referred to the related description of other embodiments. For convenience and brevity of description, for example, reference may be made to the relevant descriptions of the method embodiments of the present application with respect to the functions and operations performed by the apparatus, devices, and methods provided by the embodiments of the present application, and reference may also be made to each other, to combinations, or to references between the apparatus embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

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

receiving a system message from a first cell, wherein the system message carries PLMN of the 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 MCC in a PLMN of the first cell, the second area is an area corresponding to MCC in a target PLMN, the target PLMN is a PLMN with highest priority in the first PLMN list, and the first PLMN list comprises a plurality of PLMNs prestored in a SIM card;

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

selecting one PLMN from the second PLMN list for network selection;

acquiring 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 the cells matched with the PLMNs, selecting one PLMN from the third PLMN list for network selection.

2. The method of claim 1, wherein selecting one 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 steps of:

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.

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

4. A method according to claim 3, wherein at least one of the plurality of preset frequency bands includes at least one preset frequency point, and searching for a network is performed on the preset frequency point preferentially when searching for a network on the preset frequency band including the preset frequency point.

5. The method of claim 4, wherein the predetermined frequency band including predetermined frequency points has a higher priority than the predetermined frequency band not including predetermined frequency points.

6. The method according to claim 1, wherein the method further comprises:

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

7. The network selecting device is characterized by comprising an acquisition unit, a processing unit and a searching unit, wherein:

the acquiring unit is configured to acquire a public land mobile network PLMN of the first cell;

the processing unit is configured to determine whether a first PLMN list includes one or more country code MCCs 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 a target PLMN, and the target PLMN is a PLMN with a highest priority in the first PLMN list, where the first PLMN list includes a plurality of PLMNs prestored 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 one or more MCCs corresponding to the first area from the first PLMN list as a second PLMN list;

the searching unit is used for selecting one PLMN from the second PLMN list to select a network;

the acquiring unit is further configured to acquire a PLMN of the second cell;

the processing unit is further configured to reside in the second cell if the PLMN of the second cell is the same as the selected PLMN;

the processing unit is further configured to record, if the PLMN of the second cell is different from the selected PLMN, the PLMN of the second cell in a third PLMN list;

and the searching unit is further configured to select one PLMN from the third PLMN list for network selection if all PLMNs in the second PLMN list do not search for a cell matched with the PLMN.

8. A chip comprising a processor and a communication interface, the processor being configured to cause the chip to perform the method of any one of claims 1-6.

9. 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 carrying out communication between the module equipment and external equipment;

the chip being adapted to perform the method of any one of claims 1 to 6.

10. A network selection device 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 device to perform the method of any of claims 1-6.

11. A computer readable storage medium having stored therein computer readable instructions which, when run on a communication device, cause the communication device to perform the method of any of claims 1-6.