CN118158774A

CN118158774A - Network searching method, device, terminal and storage medium

Info

Publication number: CN118158774A
Application number: CN202410365047.1A
Authority: CN
Inventors: 贾俊文
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2024-03-27
Filing date: 2024-03-27
Publication date: 2024-06-07

Abstract

The application provides a network searching method, a network searching device, a terminal and a storage medium, and belongs to the technical field of communication. The method comprises the following steps: under the condition that the terminal is in a limited resident state, performing network searching through the SIM card in the terminal to obtain a network searching result; under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology in the priority information of the terminal is not the highest priority, the search priority of the target wireless access technology is adjusted to be the highest priority; and carrying out limited network searching according to the priority information. The scheme can lead the terminal to preferentially carry out restricted residence on the cells under the wireless access technology with successful last restricted residence, avoid the terminal to sequentially carry out restricted network searching according to the default searching priority, reduce unnecessary network searching behaviors, thereby reducing the terminal power consumption under the restricted residence scene and accelerating the speed of the restricted residence of the terminal.

Description

Network searching method, device, terminal and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a network searching method, a device, a terminal, and a storage medium.

Background

With the development of communication technology, in the case that a problem occurs in a SIM (Subscriber Identity Module ) card installed in a terminal or the terminal is in a weak network environment, the terminal cannot acquire normal network services, only limited services can be acquired, that is, the terminal can only initiate an emergency call.

In the related art, after a terminal acquires a limited service, the terminal may attempt to perform a network search periodically or continuously in order to acquire a normal network service in time. In case that the terminal does not search for a PLMN (Public Land Mobile Network ) belonging to the same network operator as the HPLMN (Home PLMN) of the SIM card, the terminal performs a restricted network search according to the searched PLMN, so that the terminal can reside in a cell in a restricted manner. This search procedure is typically performed according to the default priority of the radio access technology (5 g >4g >3g >2 g).

However, since the terminal can only obtain the limited service after the limited camping on the cell in the above scheme, there is no difference for the user whether it is the limited camping on the NR (New Radio) cell or the limited camping on the LTE (Long Term Evolution ) cell. Therefore, when the terminal is located in an area without 5G network coverage, if all NR frequency points are scanned preferentially to try to carry out limited residence on the cells associated with the NR frequency points, the power consumption of the terminal is increased, and the speed of the terminal for acquiring limited service is reduced.

Disclosure of Invention

The embodiment of the application provides a network searching method, a device, a terminal and a storage medium, which can ensure that the terminal can preferentially carry out limited residence on cells under the wireless access technology with successful last limited residence, avoid the terminal to sequentially carry out limited network searching according to the default searching priority, reduce unnecessary network searching behaviors, reduce the terminal power consumption under the limited residence scene and accelerate the limited residence speed of the terminal. The technical proposal is as follows:

according to an aspect of the embodiment of the present application, there is provided a network searching method, applied to a terminal, the method including:

Under the condition that the terminal is in a limited resident state, performing network searching through a SIM card in the terminal to obtain a network searching result, wherein the limited resident state is used for indicating that the terminal cannot acquire normal network service, the network searching result is used for indicating whether a target PLMN exists, and the target PLMN and an HPLMN of the SIM card belong to the same network operator;

Adjusting the search priority of a target wireless access technology to be the highest priority under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology in the priority information of the terminal is not the highest priority, wherein the target wireless access technology is the wireless access technology associated with the cell where the terminal is limited to reside last time;

And carrying out limited network searching according to the priority information, wherein the limited network searching is used for enabling the terminal to reside on a cell in a limited mode.

According to another aspect of the embodiments of the present application, there is provided a network searching apparatus configured in a terminal, the apparatus including:

The first search module is used for carrying out network search through the SIM card in the terminal under the condition that the terminal is in a limited residence state to obtain a network search result, wherein the limited residence state is used for indicating that the terminal cannot acquire normal network service, the network search result is used for indicating whether a target PLMN exists or not, and the target PLMN and the HPLMN of the SIM card belong to the same network operator;

A first adjustment module, configured to adjust, when the network search result does not have the target PLMN and the search priority of a target radio access technology in the priority information of the terminal is not the highest priority, the search priority of the target radio access technology to be the highest priority, where the target radio access technology is a radio access technology associated with a cell where the terminal was restricted to reside last time;

And the second search module is used for carrying out limited network search according to the priority information, wherein the limited network search is used for enabling the terminal to reside on a cell in a limited manner.

In some embodiments, the first search module includes:

The starting unit is used for starting a timer under the condition that the terminal is in a limited resident state;

And the first searching unit is used for searching the network through the SIM card under the condition that the timer finishes counting.

In some embodiments, the apparatus further comprises:

the starting module is used for restarting the timer under the condition that the terminal successfully resides in the cell in a limited manner after network searching is carried out through the SIM card;

the starting module is used for increasing the timing duration of the timer according to a preset mode; restarting the timer after increasing the time duration.

In some embodiments, the first adjustment module includes:

A determining unit, configured to determine, based on location change information of the terminal, where the location change information indicates a location change of the terminal that occurs after a last restricted camping in a cell, in a case where the network search result does not have the target PLMN and the search priority of the target radio access technology is not a highest priority;

and the adjusting unit is used for adjusting the search priority of the target wireless access technology to the highest priority under the condition that the moving path of the terminal does not exceed the preset range.

In some embodiments, the second search module is further configured to perform a restricted network search according to default priority information of the terminal, where the network search result does not include the target PLMN and the search priority of the target radio access technology is the highest priority, and the default priority information is used to indicate default search priorities of multiple radio access technologies supported by the terminal.

In some embodiments, the target radio access technology comprises a plurality of frequency points, the apparatus further comprising:

The determining module is used for determining a target frequency point from the plurality of frequency points based on the cell where the terminal is limited to reside last time, wherein the target frequency point is a frequency point associated with the cell;

and the second adjusting module is used for adjusting the search priority of the target frequency point to be the highest priority of the frequency points when the search priority of the target frequency point is not the highest priority of the frequency points.

In some embodiments, a second search module is configured to rank, from high to low, a plurality of radio access technologies supported by the terminal based on the priority information; and based on the sequencing result, performing restricted network searching until the terminal successfully and restricted resides in the cell corresponding to any wireless access technology.

In some embodiments, the apparatus further comprises:

the acquiring module is used for acquiring default priority information of the terminal when the network search result comprises the target PLMN, wherein the default priority information is used for indicating default search priorities of a plurality of wireless access technologies supported by the terminal;

and the third searching module is used for carrying out cell searching under the target PLMN according to the default priority information, wherein the cell searching is used for enabling the terminal to reside in a cell under the target PLMN so as to acquire normal network service.

According to another aspect of an embodiment of the present application, there is provided a terminal including a processor, a memory, and a transceiver; the memory stores at least one program code for execution by the processor to implement the network searching method as described in the above aspects.

According to another aspect of the embodiments of the present application, there is provided a chip including programmable logic circuits and/or program instructions for implementing the network searching method of the above aspect when the chip is run on a terminal.

According to another aspect of embodiments of the present application, there is provided a computer-readable storage medium storing at least one program code for execution by a processor to implement the network searching method as described in the above aspect.

According to another aspect of embodiments of the present application, there is provided a computer program product storing at least one program code for execution by a processor to implement the network searching method of the above aspect.

The embodiment of the application provides a network searching method, in the process of searching a network because a terminal is in a limited resident state, if the HPLMN of a SIM card of the terminal is not searched and belongs to the PLMN of the same network operator, before the limited network searching, the terminal can adjust the searching priority of a wireless access technology associated with a cell in which the terminal is limited last time to be the highest priority, so that the searching priority of the wireless access technology in the priority information of the terminal is higher than the searching priority of other wireless access technologies. According to the scheme, the priority of the wireless access technology associated with the cell subjected to the last limited residence is adjusted to the highest priority, so that the terminal can carry out limited residence on the cell under the wireless access technology subjected to the last limited residence success preferentially, the terminal is prevented from sequentially carrying out limited network searching according to the default searching priority, unnecessary network searching behaviors are reduced, the terminal power consumption under a limited residence scene is reduced, and the limited residence speed of the terminal is accelerated.

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 an implementation environment of a network searching method according to an embodiment of the present application;

FIG. 2 is a flowchart of a network searching method according to an embodiment of the present application;

FIG. 3 is a flowchart of another network searching method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a restricted residence scenario provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a network searching process according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network searching device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another network searching apparatus according to an embodiment of the present application;

fig. 8 is a block diagram of a structure of a terminal according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Reference herein to "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

It should be noted that, the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals related to the present application are all authorized by the user or are fully authorized by the parties, and the collection, use, and processing of the related data is required to comply with the relevant laws and regulations and standards of the relevant countries and regions. For example, the priority information and the location change information referred to in the present application are acquired with sufficient authorization.

Fig. 1 is a schematic diagram of an implementation environment of a network searching method according to an embodiment of the present application. Referring to fig. 1, the implementation environment includes a terminal 101 and a network device 102. The terminal 101 and the network device 102 communicate through a cell, and in some embodiments, the terminal 101 can obtain a cell capable of camping through network searching, where the cell may be a network cell provided by a network operator of a SIM card in the terminal, or may be a network cell provided by another operator, which is not limited in this embodiment of the present application.

In some embodiments, the terminal 101 is a terminal 101 having wireless communication capabilities. Wherein the terminal 101 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN). The terminal 101 may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal. For example, it may be a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device. The terminal 101 may be a mobile phone, a tablet computer, a computer with a wireless communication function, or a wearable device. In the embodiment of the present application, this is not particularly limited.

In some embodiments, the network device 102 is a base station corresponding to at least one communication system of a New Radio (NR), a long term evolution (Long Term Evolution, LTE) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, or a global system for mobile communication (Global System for Mobile Communications, GSM). In the embodiment of the present application, this is not particularly limited. In some embodiments, the network device 102 is any network device 102 with wireless transceiver capability. For example, the network device 102 is an evolved Node B (eNB), a next Generation Node B (gNB), an Access Point (AP) in a wireless fidelity (WIRELESS FIDELITY, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission Point (transmission Point, TP), or a transmission reception Point (transmission and reception Point, TRP), etc.

Fig. 2 is a flowchart of a network searching method according to an embodiment of the present application. The method is performed by a terminal, see fig. 2, the method comprising:

201. Under the condition that the terminal is in a limited resident state, the terminal performs network searching through the SIM card in the terminal to obtain a network searching result, wherein the limited resident state is used for indicating that the terminal cannot acquire normal network service, the network searching result is used for indicating whether a target PLMN exists or not, and the target PLMN and the HPLMN of the SIM card belong to the same network operator.

In the embodiment of the application, under the conditions that the SIM card installed in the terminal is in an abnormal state, the terminal is in a weak network environment or is in a network congestion scene, the terminal can only acquire limited service and can enter a limited resident state because the terminal can not acquire normal network service. The condition that the SIM card is in an abnormal state comprises the defaulting of the SIM card, the cancellation of the SIM card by a network operator and the like. A weak network environment refers to a situation where the network signal of the terminal is poor or the network rate is below a rate threshold. A network congestion scenario refers to a situation where traffic in the network exceeds its capacity to carry and handle, resulting in reduced network performance.

Under the condition that the terminal is in a limited resident state, the terminal can perform network searching through the SIM card in order to acquire normal network services in time. In the network searching process, the terminal can perform PLMN searching first to obtain a network searching result. The network search result is used for indicating whether a target PLMN exists in the PLMN list obtained by searching. The target PLMN belongs to the same network operator as the HPLMN (home PLMN) of the SIM card. The HPLMN is the PLMN to which the SIM card belongs. The target PLMN may be an EPLMN (equivalent PLMN) or an EHPLMN (equivalent home PLMN), which embodiments of the present application do not limit.

202. And under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology in the priority information of the terminal is not the highest priority, the terminal adjusts the search priority of the target wireless access technology to the highest priority, and the target wireless access technology is the wireless access technology associated with the cell where the terminal is restricted to reside last time.

In the embodiment of the application, under the condition that the target PLMN does not exist in the PLMN list obtained by the terminal through PLMN search, the terminal still cannot acquire the normal network service provided by the core network. Therefore, the terminal needs to perform a restricted network search to acquire a restricted service provided by a cell on a restricted camp. Further, in the case that the search priority of the target radio access technology is not the highest priority in the priority information of the terminal, it indicates that the terminal does not search for the cell corresponding to the target radio technology preferentially when performing the restricted network search. The target wireless access technology is the wireless access technology associated with the cell where the terminal is restricted to reside last time. However, since the terminal performs limited network search, it is only for acquiring limited services. The terminal is limited to reside in the cell corresponding to any radio access technology, and there is no difference for the user experience. Therefore, the terminal can adjust the search priority of the target radio access technology to the highest priority, so that the terminal can preferentially perform restricted camping on the cell corresponding to the radio access technology with the last restricted camping success when performing restricted network search.

203. And the terminal performs limited network searching according to the priority information, wherein the limited network searching is used for enabling the terminal to reside on the cell in a limited manner.

In the embodiment of the application, after the priority information of the terminal is modified, the terminal can search the limited network for the cells corresponding to the plurality of wireless access technologies in sequence from high to low according to the search priority of the plurality of wireless access technologies in the modified priority information until the terminal successfully resides in the cell in a limited manner.

Fig. 3 is a flowchart of another network searching method according to an embodiment of the present application. The method is performed by a terminal, see fig. 3, the method comprising:

301. Under the condition that the terminal is in a limited resident state, the terminal starts a timer, and the limited resident state is used for indicating that the terminal cannot acquire normal network services.

In the embodiment of the application, under the conditions that the SIM card installed in the terminal is in an abnormal state, the terminal is in a weak network environment or in a network congestion scene, when network searching is carried out through the SIM card, the terminal cannot reside in a network cell with a cell type suitable for a cell (subscriber cell), and thus normal network service provided by a core network cannot be acquired. The terminal can only obtain the limited service by being limited to reside on the network cell with the cell type of acceptable cell (acceptable cell), i.e. the terminal can enter the limited-residence state. The condition that the SIM card is in an abnormal state comprises the defaulting of the SIM card, the cancellation of the SIM card by a network operator and the like. A weak network environment refers to a situation where the network signal of the terminal is poor or the network rate is below a rate threshold. A network congestion scenario refers to a situation where traffic in the network exceeds its capacity to carry and handle, resulting in reduced network performance. The restricted service is used to indicate that the terminal can only make emergency calls. A suitable cell is a cell in which a terminal can camp and provide normal network services. An acceptable cell refers to a cell that is not sufficient to be a suitable cell, but that meets at least the minimum conditions for an emergency call. The minimum condition for an emergency call is that the cell does not prohibit access by the terminal and the cell is able to provide limited service.

For example, fig. 4 is a schematic diagram of a limited residence scenario provided by an embodiment of the present application. As shown in fig. 4, in scenario 1, a terminal transmits a network registration Request (Attach Request) to a core network through a base station. After receiving the network registration request, the core network refuses the terminal to perform network registration (Attach Reject). Scenario 1 generally occurs when the SIM card of the terminal is in an abnormal state. At this time, the terminal is limited in communication capability by the network operator of the SIM card, so that the terminal cannot acquire normal network services provided by the core network, and thus enters a limited resident state. In scenario 2, the terminal transmits a network registration Request (Attach Request) to the base station. After receiving the network registration request, the base station replies to the terminal that the access to the cell failed (Rach Failure). Scenario 2 typically occurs when the terminal is in a weak network environment or network congestion scenario. At this time, the terminal cannot normally access the cell, and thus enters a restricted stay state.

Under the condition that the terminal is in a limited resident state, the terminal can perform network searching through the SIM card in order to acquire normal network services in time. And the terminal can periodically initiate network searching action through the timer, and correspondingly, under the condition that the terminal is in the limited resident state, the terminal can start the timer to count the time of the terminal in the limited resident state. The time duration of the timer may be 30 seconds, 60 seconds, 120 seconds, etc., which is not limited in the embodiment of the present application.

302. And under the condition that the timer is finished, the terminal performs network searching through the SIM card to obtain a network searching result, wherein the network searching result is used for indicating whether a target PLMN exists, and the target PLMN and the HPLMN of the SIM card belong to the same network operator.

In the embodiment of the application, the terminal can perform network searching through the SIM card under the condition that the timer finishes timing. In the network searching process, the terminal will search for PLMNs first to obtain a PLMN list. The terminal can determine the network search result according to the PLMN list obtained by searching. The network search result is used for indicating whether the target PLMN exists in the PLMN list. The target PLMN belongs to the same network operator as the HPLMN (home PLMN) of the SIM card. The HPLMN is the PLMN to which the SIM card belongs. The target PLMN may be an EPLMN (equivalent PLMN) or an EHPLMN (equivalent home PLMN), which embodiments of the present application do not limit. The EPLMN is a PLMN that is co-located with the HPLMN, and the EHPLMN is a home PLMN that is co-located with the HPLMN. If the terminal is currently in the home location of the SIM card, then the EPLMN is equal to the EHPLMN. If the terminal is roaming, then EPLMN is not equal to EHPLMN. Roaming refers to a region of use outside the home location of the SIM card.

Wherein the HPLMN is typically the first five digits of the IMSI (International Mobile Subscriber Identity ) number of the terminal. For example, the HPLMN of chinese mobile may be 46000, 46002, 46007, etc., the HPLMN of chinese communication may be 46001, 46006, 46009, etc., the HPLMN of chinese telecommunication may be 46003, 46005, 46011, etc. In the case that the terminal is in the home of the SIM card and the network operator is mobile in china, if the HPLMN of the terminal SIM card is 46000, then 46002 and 46007 are home PLMNs that are located at the same level as 46000, i.e. EPLMN or EHPLMN.

In some embodiments, the terminal is capable of periodically initiating network search behavior through a timer. Accordingly, the terminal can restart the timer in case the terminal successfully limited to reside on the cell after network searching through the SIM card. Under the condition that the terminal successfully and limitedly resides in the cell, the terminal is indicated to successfully acquire the limited service, namely, the terminal is indicated to enter the limited residence state again. The terminal can restart the timer and, in case the timer expires, resume the network search. By adopting the network searching mode based on the timer, namely, after the timer finishes counting, the terminal executes the searching operation on the network, if the terminal performs the limited resident state again, the timer is reset to wait for the timer to finish counting again, and then the searching operation on the network is executed again, so that the power consumption of the terminal is reduced, and the timeliness of the network searching by the terminal is ensured to a certain extent, so that the terminal can acquire normal network service in time.

In some embodiments, in the process of restarting the timer, the terminal can increase the timing duration of the timer according to a preset manner; and then restarting the timer after increasing the time duration. Under the condition that the terminal performs the limited resident state again, the frequency of network searching by the terminal can be further reduced by increasing the timing time of the timer, so that the power consumption of the terminal is reduced.

It should be noted that, in the case that the network search result does not include the target PLMN, the terminal may perform the restricted network search through the following steps 303-305 to obtain the restricted service. In case that the network search result has the target PLMN, the terminal can perform a normal network search through the following steps 306-307 to obtain a normal network service.

303. And under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology in the priority information of the terminal is not the highest priority, the terminal adjusts the search priority of the target wireless access technology to the highest priority, and the target wireless access technology is the wireless access technology associated with the cell where the terminal is restricted to reside last time.

In the embodiment of the application, under the condition that the target PLMN does not exist in the PLMN list obtained by the terminal through PLMN searching, the terminal is indicated that the terminal does not search the PLMN belonging to the same network operator as the HPLMN, namely the terminal cannot obtain the normal network service provided by the core network of the network operator. Therefore, the terminal needs to perform a restricted network search to acquire a restricted service provided by a restricted camping cell. Further, in the case that the search priority of the target radio access technology is not the highest priority in the priority information of the terminal, it indicates that the terminal does not search for the cell corresponding to the target radio access technology preferentially but searches for the cell corresponding to the radio access technology with the highest priority preferentially when performing the restricted network search. The target radio access technology is a cell associated radio access technology of the last limited residence of the terminal, namely a cell associated radio access technology of the last limited residence of the terminal. However, since the terminal performs limited network search, it is only for acquiring limited services. The terminal is limited to reside in the cell corresponding to any radio access technology, and there is no difference for the user experience. Therefore, the terminal can adjust the search priority of the target wireless access technology to the highest priority, so that when the limited network search is carried out, the terminal can carry out limited residence on the cell corresponding to the wireless access technology which is successfully subjected to limited residence last time preferentially, thereby reducing unnecessary network search behaviors, reducing the power consumption of the terminal under a limited residence scene and accelerating the limited residence speed of the terminal.

In some embodiments, in the case where the network search result does not have the target PLMN and the search priority of the target radio access technology is the highest priority, the terminal can perform the restricted network search according to default priority information of the terminal, where the default priority information is used to indicate default search priorities of multiple radio access technologies supported by the terminal. And under the condition that the network search result does not exist in the target PLMN, indicating that the terminal needs to perform limited network search. Under the condition that the search priority of the target wireless access technology is the highest priority in the priority information of the terminal, the terminal is indicated to search the cell corresponding to the target wireless technology preferentially when searching the limited network, namely searching the cell corresponding to the wireless ending technology associated with the cell where the last limited residence is performed preferentially. Therefore, the terminal can wirelessly adjust the search priority of the target wireless access technology, and can perform limited network search according to the default priority information.

In some embodiments, the terminal is further capable of determining whether to adjust the search priority of the target radio access technology based on the mobile path of the terminal prior to conducting the restricted network search. Correspondingly, under the condition that the network search result does not have the target PLMN and the search priority of the target wireless access technology is not the highest priority, the terminal can determine the moving path of the terminal based on the position change information of the terminal, wherein the position change information is used for indicating the position change of the terminal after the terminal is limited to reside in the cell last time; then, in the case where the moving path of the terminal does not exceed the preset range, the terminal can adjust the search priority of the target radio access technology to the highest priority. After entering the limited resident state, the terminal can record the real-time position of the terminal. Therefore, the terminal can determine the position change of the terminal after the last limited residence in the cell according to the real-time position recorded after entering the limited residence state, and further determine the moving path of the terminal from the last limited residence to the current network searching period based on the position change. In the case that the moving path of the terminal does not exceed the preset range, it is indicated that the terminal does not move a large distance in the period of time. When the limited network search is carried out subsequently, the terminal can reside in any cell corresponding to the target wireless access technology in a limited way with a high probability, and the target wireless access technology is the wireless access technology associated with the cell in which the terminal resides in the limited way last time. Therefore, the terminal can adjust the search priority of the target radio access technology to the highest priority, so that the terminal can perform limited camping on the cell corresponding to the target radio access technology preferentially. By deciding whether to adjust the search priority of the target wireless access technology based on the position change of the terminal after entering the limited residence state, the success rate of the limited residence of the terminal on the cell can be improved, and the situation that the search priority of the wireless access technology is blindly adjusted, so that unnecessary network search is performed by the terminal is avoided, and the power consumption of the terminal is increased is avoided.

Alternatively, in the case where the movement path of the terminal exceeds the preset range, it is indicated that the terminal has moved a large distance after entering the restricted stay state. When the limited network search is performed subsequently, the terminal can not reside in the cell corresponding to the wireless access technology associated with the cell in which the terminal resides in the last time in a limited manner, so that the terminal does not need to adjust the priority of the target wireless access technology to the highest priority. At this time, the terminal can perform limited network search according to the default search priority of the radio access technology.

In some embodiments, the target radio access technology includes a plurality of frequency points, and after adjusting the priority of the target radio access technology to the highest priority, the terminal can further adjust the search priority of the frequency points included in the target radio access technology. Correspondingly, the terminal can determine a target frequency point from a plurality of frequency points based on the cell where the terminal is limited to reside last time, wherein the target frequency point is a frequency point associated with the cell; then, in the case where the search priority of the target frequency point is not the highest priority among the plurality of frequency points, the terminal can adjust the search priority of the target frequency point to the highest priority among the plurality of frequency points. After the priority of the target radio access technology is adjusted to the highest priority, the terminal scans cells corresponding to a plurality of frequency points included in the target radio access technology preferentially when searching for the limited network. The terminal can sequentially carry out limited residence on the cells corresponding to the frequency points according to the search priority of the frequency points. When the search priority of the plurality of frequency points is set, the terminal can determine the frequency point associated with the cell, namely the target frequency point, from the plurality of frequency points based on the cell in which the cell is restricted to reside last time. And then under the condition that the search priority of the target frequency point is not the highest priority in the plurality of frequency points, adjusting the search priority of the target frequency point to the highest priority so that the terminal can carry out limited residence on the cell corresponding to the target frequency point preferentially. The search priority of the frequency point corresponding to the cell where the terminal is limited to reside last time is adjusted to the highest priority of a plurality of frequency points, so that the speed of limited residence of the terminal can be further increased, and the power consumption of the terminal during limited network search is reduced to a greater extent.

304. The terminal orders the plurality of radio access technologies supported by the terminal from high to low based on the priority information.

In the embodiment of the application, the priority information is used for indicating the search priority of a plurality of wireless access technologies supported by the terminal. Thus, the terminal can rank the plurality of radio access technologies from high to low based on the priority information. Wherein, the higher the search priority of the radio access technology, the more the radio access technology is in front in the ordering result.

305. And the terminal performs restricted network searching based on the sequencing result until the terminal successfully resides in the cell corresponding to any wireless access technology in a restricted manner.

In the embodiment of the application, the terminal can determine the sorting result of the searching priority of a plurality of wireless access technologies based on the sorting result. Therefore, the terminal can perform limited network searching according to the search priority ordering of the multiple wireless access technologies until the terminal successfully resides in the cell in a limited manner.

306. And under the condition that the network search result comprises the target PLMN, the terminal acquires default priority information of the terminal, wherein the default priority information is used for indicating default search priorities of a plurality of wireless access technologies supported by the terminal.

In the embodiment of the application, under the condition that the network search result comprises the target PLMN, the terminal is shown to search for the PLMN belonging to the same network operator as the HPLMN, namely, the terminal can acquire the normal network service provided by the core network of the network operator. Since the target PLMN supports a plurality of radio access modes, the search priority of each radio access mode is different. Thus, the terminal can acquire default priority information indicating default search priorities of the plurality of radio access technologies supported by the terminal before the target PLMN performs cell search.

307. And the terminal performs cell search under the target PLMN according to the default priority information, wherein the cell search is used for enabling the terminal to reside in a cell under the target PLMN so as to acquire normal network service.

In the embodiment of the application, the terminal can determine the default search priority of a plurality of wireless access modes based on the default priority information, and then the terminal can search the cells corresponding to the plurality of wireless access modes from high to low under the target PLMN according to the determined default search priority of the plurality of wireless access modes until the terminal successfully resides in the cell under the target PLMN. After residing in the cell under the target PLMN, the terminal can acquire the normal network service provided by the cell, namely, the terminal can normally access the network.

In order to further understand the network searching method provided by the embodiment of the application, the embodiment of the application also provides a schematic diagram of a network searching flow. As shown in fig. 5, in case that a UE (user equipment, i.e., terminal) is in a restricted camping state, the UE can start a timer and perform a network search in case that the timer expires. In the network searching process, the bottom layer of the UE may search for PLMNs first, and search whether there is a PLMN belonging to the same network operator as the HPLMN corresponding to the SIM card, that is, EHPLMNs and EPLMNs available to the UE. If so, the bottom layer indicates a PLMN list including EHPLMN and EPLMN to a NAS (Non-Access Stratum) layer of the UE, and after receiving the PLMN list, the NAS layer can instruct an RRC (Radio Resource Control Release ) layer of the UE to perform automatic network searching according to a search priority order of NR > LTE > WCDMA > GSM. The network search is intended to obtain normal services provided by the core network of the network operator. If not, the bottom layer indicates to the NAS layer that the searched PLMN list does not include an available EHPLMN and EPLMN. After the NAS layer receives the indication, the search priority of the RAT (Radio Access Technology ) associated with the cell in which the UE was restricted last time can be adjusted to the highest priority among multiple RATs, and the search priorities of the other RATs remain unchanged. And then the NAS layer instructs the RRC layer to perform limited network searching according to the adjusted searching priority of the plurality of RATs, wherein the network searching is aimed at obtaining limited services.

Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein.

The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

Fig. 6 is a schematic structural diagram of a network searching device according to an embodiment of the present application. Referring to fig. 6, the apparatus includes:

The first search module 601 is configured to perform a network search through a SIM card in the terminal in a limited residence state, to obtain a network search result, where the limited residence state is used to indicate that the terminal cannot obtain a normal network service, and the network search result is used to indicate whether a target PLMN exists, and the target PLMN and an HPLMN of the SIM card belong to the same network operator;

a first adjustment module 602, configured to adjust, when the network search result does not include the target PLMN and the search priority of the target radio access technology in the priority information of the terminal is not the highest priority, the search priority of the target radio access technology to be the highest priority, where the target radio access technology is a radio access technology associated with a cell in which the terminal has been restricted to reside last time;

A second search module 603, configured to perform a restricted network search according to the priority information, where the restricted network search is used to make the terminal reside in the cell in a restricted manner.

In some embodiments, fig. 7 is a schematic structural diagram of another network searching apparatus according to an embodiment of the present application. The first search module 601 includes:

a starting unit 701, configured to start a timer when the terminal is in a restricted residence state;

The first search unit 702 is configured to perform network search through the SIM card when the timer expires.

In some embodiments, with continued reference to fig. 7, the apparatus further comprises:

a starting module 604, configured to restart the timer in case that the terminal is successfully restricted to reside in the cell after the network search is performed through the SIM card;

A starting module 604, configured to increase a timing duration of the timer according to a preset manner; restarting the timer after increasing the time duration.

In some embodiments, with continued reference to fig. 7, the first adjustment module 602 includes:

a determining unit 703, configured to determine, based on location change information of the terminal, a movement path of the terminal, where the network search result does not include the target PLMN and the search priority of the target radio access technology is not the highest priority, the location change information being used to indicate a location change occurring after the terminal has been restricted to reside in the cell last time;

An adjusting unit 704, configured to adjust the search priority of the target radio access technology to the highest priority if the moving path of the terminal does not exceed the preset range.

In some embodiments, the second search module 603 is further configured to perform the restricted network search according to default priority information of the terminal, where the network search result does not have the target PLMN and the search priority of the target radio access technology is the highest priority, and the default priority information is used to indicate default search priorities of multiple radio access technologies supported by the terminal.

In some embodiments, the target radio access technology comprises a plurality of frequency points, with continued reference to fig. 7, the apparatus further comprises:

A determining module 605, configured to determine, based on a cell in which the terminal is restricted to reside last time, a target frequency point from multiple frequency points, where the target frequency point is a frequency point associated with the cell;

The second adjusting module 606 is configured to adjust the search priority of the target frequency point to the highest priority of the plurality of frequency points if the search priority of the target frequency point is not the highest priority of the plurality of frequency points.

In some embodiments, the second searching module 603 is configured to rank, from high to low, the plurality of radio access technologies supported by the terminal based on the priority information; and based on the sequencing result, performing restricted network searching until the terminal successfully resides in the cell corresponding to any wireless access technology in a restricted manner.

An obtaining module 607, configured to obtain, when the network search result includes the target PLMN, default priority information of the terminal, where the default priority information is used to indicate a default search priority of multiple radio access technologies supported by the terminal;

and a third searching module 608, configured to perform a cell search under the target PLMN according to the default priority information, where the cell search is used to make the terminal reside in a cell under the target PLMN to obtain a normal network service.

The embodiment of the application provides a network searching device, in the process of searching a network because a terminal is in a limited resident state, if the HPLMN of a SIM card of the terminal is not searched and belongs to the PLMN of the same network operator, before searching the limited network, the terminal can adjust the searching priority of a wireless access technology associated with a cell in which the terminal is limited last time to be the highest priority, so that the searching priority of the wireless access technology in the priority information of the terminal is higher than the searching priority of other wireless access technologies. According to the scheme, the priority of the wireless access technology associated with the cell subjected to the last limited residence is adjusted to the highest priority, so that the terminal can carry out limited residence on the cell under the wireless access technology subjected to the last limited residence success preferentially, the terminal is prevented from sequentially carrying out limited network searching according to the default searching priority, unnecessary network searching behaviors are reduced, the terminal power consumption under a limited residence scene is reduced, and the limited residence speed of the terminal is accelerated.

It should be noted that, in implementing the functions of the network searching device provided in the foregoing embodiment, only the division of the foregoing functional modules is used as an example, and in practical application, the foregoing functional allocation may be implemented by different functional modules, that is, the internal structure of the server is divided into different functional modules, so as to implement all or part of the functions described above. In addition, the network searching device and the network searching method provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the network searching device and the network searching method are detailed in the method embodiments and are not repeated herein.

The embodiment of the application provides a terminal, which comprises a processor, a memory and a transceiver; the memory stores at least one program code for execution by the processor to implement the network searching method provided by the various method embodiments described above.

Fig. 8 is a block diagram of a structure of a terminal according to an embodiment of the present application. In some embodiments, the terminal 800 is a smart phone, tablet computer, wireless communication enabled computer or wearable device, or the like. The terminal 800 of the present application includes at least one or more of the following: a processor 810, a memory 820, and a transceiver 830.

In some embodiments, processor 810 includes one or more processing cores. The processor 810 connects various parts within the overall terminal 800 using various interfaces and lines, performs various functions of the terminal 800 and processes data by executing or executing program code stored in the memory 820, and invoking data stored in the memory 820. In some embodiments, the processor 810 is implemented in hardware in at least one of digital signal Processing (DIGITAL SIGNAL Processing, DSP), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 810 can integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), a neural network processor (Neural-network Processing Unit, NPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the NPU is used for realizing an artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) function; the modem is used to handle wireless communications. It will be appreciated that the modem described above may not be integrated into the processor 810 and may be implemented solely by a single chip.

In some embodiments, the processor 810 is a processor integrated with a wireless fidelity (WIRELESS FIDELITY, wi-Fi) chip. The Wi-Fi chip is a chip with double Wi-Fi processing capability. For example, the Wi-Fi chip is a dual-frequency dual-transmit (Dual Band Dual Concurrent, DBDC) chip, or a dual-frequency synchronous (Dual Band Simultaneous, DBS) chip, or the like.

In some embodiments, memory 820 includes random access Memory (Random Access Memory, RAM), and in some embodiments, memory 820 includes Read-Only Memory (ROM). In some embodiments, the memory 820 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 820 may be used to store program codes. The memory 820 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described below, etc.; the storage data area may store data (e.g., audio data, phonebook) created according to the use of the terminal 800, etc.

In some embodiments, transceiver 830 is a fiber optic transceiver. The optical fiber transceiver is an ethernet transmission medium converting unit that exchanges twisted pair electrical signals at a short distance with optical signals at a long distance. The transceiver 830 is configured to convert an electrical signal of the terminal 800 into an optical signal and transmit the optical signal, and also convert a received optical signal into an electrical signal and input the electrical signal to the terminal 800.

In some embodiments, a display screen is also included in terminal 800. The display screen is a display component for displaying a user interface. In some embodiments, the display screen is a display screen with a touch function by which a user can perform a touch operation on the display screen using any suitable object such as a finger, a stylus, or the like. In some embodiments, the display screen is typically disposed on the front panel of the terminal 800. In some embodiments, the display screen is designed as a full screen, a curved screen, a contoured screen, a double-sided screen, or a folded screen. In some embodiments, the display screen is further designed to be a combination of a full screen and a curved screen, a combination of a special-shaped screen and a curved screen, and the like, which is not limited in this embodiment.

In addition, those skilled in the art will appreciate that the configuration of the terminal 800 illustrated in the above-described figures does not constitute a limitation of the terminal 800, and the terminal 800 includes more or less components than illustrated, or certain components may be combined, or a different arrangement of components. For example, the terminal 800 further includes a microphone, a speaker, an input unit, a sensor, an audio circuit, a module, a power supply, a bluetooth module, and the like, which are not described herein.

The present application also provides a computer-readable storage medium storing at least one program code loaded and executed by the processor to implement the network searching method as shown in the above embodiments.

The present application also provides a chip comprising programmable logic circuits and/or program instructions for implementing the network searching method as shown in the above embodiments when the chip is run on a terminal.

The present application also provides a computer program product storing at least one program code for execution by a processor to implement the network searching method as shown in the various embodiments above.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

It will be understood by those skilled in the art that all or part of the steps in the network searching method implementing the above embodiments may be implemented by hardware, or may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and the above storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like. The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.

Claims

1. A network searching method, applied to a terminal, comprising:

2. The method according to claim 1, wherein the performing network search by the SIM card in the terminal in the case that the terminal is in the restricted resident state comprises:

starting a timer under the condition that the terminal is in a limited resident state;

And under the condition that the timer is finished, searching the network through the SIM card.

3. The method according to claim 2, wherein the method further comprises:

Restarting the timer under the condition that the terminal successfully resides in a cell in a limited manner after network searching is performed through the SIM card;

The restarting the timer includes:

Increasing the timing duration of the timer according to a preset mode;

restarting the timer after increasing the time duration.

4. The method according to claim 1, wherein said adjusting the search priority of the target radio access technology to the highest priority in the case where the network search result does not exist the target PLMN and the search priority of the target radio access technology in the priority information of the terminal is not the highest priority, comprises:

Determining a moving path of the terminal based on position change information of the terminal, wherein the position change information is used for indicating position change of the terminal after last limited residence in a cell under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology is not the highest priority;

and under the condition that the moving path of the terminal does not exceed the preset range, adjusting the searching priority of the target wireless access technology to be the highest priority.

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

and under the condition that the network search result does not exist the target PLMN and the search priority of the target wireless access technology is the highest priority, performing limited network search according to the default priority information of the terminal, wherein the default priority information is used for indicating the default search priorities of a plurality of wireless access technologies supported by the terminal.

6. The method of claim 1, wherein the target radio access technology comprises a plurality of frequency points, the method further comprising:

Determining a target frequency point from the plurality of frequency points based on the cell in which the terminal is limited to reside last time, wherein the target frequency point is a frequency point associated with the cell;

and when the search priority of the target frequency point is not the highest priority of the plurality of frequency points, adjusting the search priority of the target frequency point to be the highest priority of the plurality of frequency points.

7. The method of claim 1, wherein said performing a restricted network search in accordance with said priority information comprises:

Based on the priority information, ordering a plurality of wireless access technologies supported by the terminal from high to low;

And based on the sequencing result, performing restricted network searching until the terminal successfully and restricted resides in the cell corresponding to any wireless access technology.

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

Acquiring default priority information of the terminal when the network search result comprises the target PLMN, wherein the default priority information is used for indicating default search priorities of a plurality of wireless access technologies supported by the terminal;

And carrying out cell search under the target PLMN according to the default priority information, wherein the cell search is used for enabling the terminal to reside in a cell under the target PLMN so as to acquire normal network service.

9. A network searching apparatus, configured in a terminal, the apparatus comprising:

10. A terminal comprising a processor, a memory, and a transceiver; the memory stores at least one program code for execution by the processor to implement the network searching method of any one of claims 1 to 9.

11. A computer readable storage medium, characterized in that the storage medium stores at least one program code for execution by a processor to implement the network searching method of any of claims 1 to 9.

12. A chip comprising programmable logic circuits and/or program instructions for implementing the network searching method according to any of claims 1 to 9 when the chip is run on a terminal.