CN115412994A

CN115412994A - Cell selection method and cell selection device

Info

Publication number: CN115412994A
Application number: CN202110591034.2A
Authority: CN
Inventors: 陈少珠; 刘俊威
Original assignee: Samsung Guangzhou Mobile R&D Center; Samsung Electronics Co Ltd
Current assignee: Samsung Guangzhou Mobile R&D Center; Samsung Electronics Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-11-29

Abstract

A cell selection method and a cell selection apparatus are provided. Wherein the method may comprise the steps of: reading cell information; determining whether the cell exists in a pseudo base station cell list according to the cell information; reading cell information of a next cell in a case where the cell exists in the pseudo base station cell list. Sending a registration request if the cell is not present in the pseudo base station cell list. The method and the device can prevent the public security pseudo base station from being continuously and repeatedly registered, and avoid the situation that the user cannot normally use the network service in the area.

Description

Cell selection method and cell selection device

Technical Field

The present disclosure relates to the field of communications. More particularly, the present disclosure relates to a cell selection method and a cell selection apparatus for preventing repeated entry into a public security pseudo base station.

Background

In the current network, in order to collect the information of the mobile users, some places with dense people flow are provided with public security pseudo base stations. The design principle of the public security pseudo base station is as follows: operator cooperation is required, the cell of the public security pseudo base station is configured as a high-priority adjacent cell, and broadcasting is carried out on an operator network in the region. Generally, a network plans a base station in one Area to belong to the same Tracking Area Code (TAC), and when an electronic device (such as a mobile phone) moves from one Area to another Area, the TAC changes, and then a Tracking Area Update (TAU) is triggered. The TAC of the police pseudo base station is generally set to be different from the neighboring normal cell. Therefore, the electronic device reselects the public security pseudo base station with high priority according to the specification of the protocol, and the TAU is triggered due to different TACs, which is a process that the electronic device registers on the public security pseudo base station. In this process, the police pseudo base station queries the ID of the electronic device for the purpose of collecting information, and then issues a TAU reject to kick the electronic device out of the cell. At this time, the electronic device may have a transient out-of-service phenomenon. And normal service can not be acquired until the electronic equipment searches for the network again and registers to a normal cell.

However, due to the special configuration of the network, electronic devices residing in some areas are repeatedly registered with the public security pseudo base station and then kicked out in order to obtain normal service. Then according to the protocol specification, the base station re-registers to the public security pseudo base station with high priority, and the condition of no service repeatedly occurs.

Disclosure of Invention

Exemplary embodiments according to the present disclosure provide a cell selection method and a cell selection apparatus for preventing repeated login to a public security pseudo base station to solve at least the above-mentioned problems.

According to an example embodiment of the present disclosure, there is provided a cell selection method, which may include: reading cell information; determining whether the cell exists in a pseudo base station cell list or not according to the cell information; reading cell information of a next cell under the condition that the cell exists in the pseudo base station cell list; sending a registration request if the cell is not present in the pseudo base station cell list.

Optionally, the cell information may include a cell frequency point, a physical cell identifier, a tracking area code, and a cell ID.

Optionally, the pseudo base station cell list may include pseudo base station cell information of a pseudo base station cell and timer information corresponding to each piece of pseudo base station cell information, where the timer information may be used to control deletion of corresponding pseudo base station cell information from the pseudo base station cell list after expiration of a timer.

Alternatively, the timer duration in the timer information may be updated according to the mobile location of the terminal.

Optionally, the timer duration in the timer information may be updated by: initializing a timer duration T corresponding to the pseudo base station cell information; detecting the current position G1 of the terminal every a preset time length T/2; calculating the distance difference between the position G0 of the terminal and the current position G1 of the terminal when the pseudo base station cell information is added into the pseudo base station cell list; when the range difference is within a predetermined range, a timer duration is reset to T.

Optionally, the step of determining whether the cell exists in the pseudo base station cell list according to the cell information may include: comparing the cell information with the pseudo base station cell information; if the cell information is matched with the pseudo base station cell information, determining that the cell exists in the pseudo base station cell list; determining that the cell does not exist in the pseudo base station cell list if the cell information does not match the pseudo base station cell information.

Optionally, the cell selection method may further include: reading other system information of the cell; when a response to the registration request is rejected, determining whether the other system information meets a preset condition; and when the other system information is determined to meet the preset condition, determining the cell as a pseudo base station cell, adding the cell information into the pseudo base station cell list and setting timer information of the cell information.

Optionally, the preset condition may be that the other system information includes a blacklisted intra-frequency neighboring cell list and a physical cell identification range in the blacklisted intra-frequency neighboring cell list includes the cell.

According to another exemplary embodiment of the present disclosure, there is provided a cell selection apparatus, which may include: a reading module configured to read cell information; a processing module configured to: determining whether the cell exists in a pseudo base station cell list according to the cell information; under the condition that the cell exists in the pseudo base station cell list, controlling a reading module to read cell information of a next cell; sending a registration request if the cell is not present in the pseudo base station cell list.

Optionally, the processing module may be configured to: comparing the cell information with the pseudo base station cell information; if the cell information is matched with the pseudo base station cell information, determining that the cell exists in the pseudo base station cell list; determining that the cell does not exist in the pseudo base station cell list if the cell information does not match the pseudo base station cell information.

Optionally, the processing module may be configured to: reading other system information of the cell; when a rejection response to the registration request is received, determining whether the other system information meets a preset condition; and when the other system information is determined to meet the preset condition, determining the cell as a pseudo base station cell, adding the cell information into the pseudo base station cell list and setting timer information of the cell information.

According to an exemplary embodiment of the present disclosure, there is provided a computer-readable storage medium having stored thereon instructions which, when executed by a processor, implement a cell selection method according to an exemplary embodiment of the present disclosure.

According to an exemplary embodiment of the present disclosure, there is provided a computing apparatus including: a processor; a memory storing instructions that, when executed by the processor, implement a cell selection method according to an example embodiment of the present disclosure.

According to an exemplary embodiment of the present disclosure, a computer program product is provided, in which instructions are executed by at least one processor in an electronic device to perform a cell selection method according to an exemplary embodiment of the present disclosure.

The method and the device can prevent the equipment from continuously and repeatedly registering to the pseudo base station, and avoid the situation that the user cannot normally use network service in the area, thereby improving the user experience.

Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.

Drawings

These and/or other aspects and advantages of the disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 illustrates a flow chart of a cell selection method according to an exemplary embodiment of the present disclosure;

fig. 2 illustrates a flow chart of a cell selection method according to another exemplary embodiment of the present disclosure;

fig. 3 illustrates a block diagram of a cell selection apparatus according to an exemplary embodiment of the present disclosure;

fig. 4 shows a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure;

fig. 5 shows a schematic diagram of a computing device according to an exemplary embodiment of the present disclosure.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art upon reading the disclosure of the present application. For example, the order of operations described herein is merely an example, and is not limited to those set forth herein, but may be changed as will become apparent after understanding the disclosure of the present application, except to the extent that operations must occur in a particular order. Moreover, descriptions of features known in the art may be omitted for clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and/or systems described herein, which will be apparent after understanding the disclosure of the present application.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular is also intended to include the plural unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs after understanding the present disclosure. Unless explicitly defined as such herein, terms (such as those defined in general dictionaries) should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal sense.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Further, in the description of the examples, when it is considered that detailed description of well-known related structures or functions will cause a vague explanation of the present disclosure, such detailed description will be omitted.

According to the disclosure, the electronic device resides in the public security pseudo base station cell only for the first time, when the cell meets the characteristics of the pseudo base station, the cell is added into the pseudo base station cell list, when the cell selection or cell reselection process starts, whether the current cell exists in the pseudo base station cell list or not is judged, if yes, the cell selection or cell reselection process is ended, and the next cell selection or cell reselection process is carried out. The electronic device is kicked out and no longer reselects to the cell. The electronic equipment has no service phenomenon for the first time.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, embodiments may be implemented in various forms and are not limited to the examples described herein.

Fig. 1 illustrates a flowchart of a cell selection method according to an exemplary embodiment of the present disclosure. The method illustrated in fig. 1 is applicable to any electronic device having communication capabilities. The electronic equipment may include, for example, but is not limited to, portable communication devices (e.g., smart phones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, and the like. According to the embodiments of the present disclosure, the electronic apparatus is not limited to the above.

Referring to fig. 1, cell information is read in step S101. Here, the cell may refer to a cell to which the electronic device is to be registered. In case that the signal of the current cell satisfies the cell selection, the cell information of the cell can be read. For example, the cell information of the current cell may be read when the cell is a suitable cell and the signal reception level strength satisfies the criterion for cell selection. Or, when the neighbor cell is determined to meet the criteria of cell reselection according to at least one of SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB24 of the current cell, the target cell information may be read. The criteria for cell selection and cell reselection are described in 3gpp TS 36.304, and a detailed description thereof is omitted here.

The read cell information may include, for example, a cell frequency point, a Physical Cell Identity (PCI), a Tracking Area Code (TAC), and a cell ID, although the present disclosure is not limited thereto. The cell frequency point information is determined when the electronic device performs scanning, the PCI is determined when the synchronization channel is demodulated, and the TAC and the cell ID may be included in SIB 1.

In step S102, it is determined whether the cell exists in the pseudo base station cell list according to the read cell information.

The pseudo base station cell list may include pseudo base station cell information for the pseudo base station cell. For example, each piece of pseudo base station cell information may include, but is not limited to, cell frequency point, PCI, TAC, cell ID.

In addition, the pseudo base station cell list may further include timer information corresponding to each piece of pseudo base station cell information, the timer information may maintain a timer, and the corresponding pseudo base station cell information may be deleted from the pseudo base station cell list after the timer expires.

The pseudo base station cell list may be pre-stored in the electronic device, and cell information of pseudo base station cells (such as previously detected pseudo base station cells) may be pre-stored in the pseudo base station cell list.

As an example, the pseudo base station cell list may be initialized to empty each time the electronic device is powered on. When a cell satisfying the pseudo base station characteristics is detected (how to add the monitored pseudo base station cell to the pseudo base station cell list will be described in detail below), a record may be generated from information of the cell, such as a cell frequency, a PCI, a TAC, and a cell ID, of the cell, and a corresponding timer may be set for the record, and then the record is added to the pseudo base station cell list. The pseudo base station cell list may be as shown in table 1 below.

TABLE 1

However, the above table is merely exemplary, and the present disclosure is not limited thereto.

The duration of the timer may be set to a fixed duration. For example, the duration of the timer may be uniformly set to a fixed duration, such as 1 minute, 1 hour, or 1 day, etc.

In addition, in the case where the pseudo base station cell list is initialized to be empty each time the electronic device is turned on, the timer duration in the timer information may be updated according to the mobile position of the terminal. A timer duration T corresponding to the pseudo base station cell information may be initialized, a current position G1 of the terminal may be detected every predetermined duration T/2, a distance difference between a position G0 of the terminal and the current position G1 of the terminal when the pseudo base station cell information is added to the pseudo base station cell list may be calculated, and the timer duration may be reset to T when the calculated distance difference is within a predetermined range. For example, when the position information of the electronic equipment is added into the pseudo base station cell list, the position information G0 of the electronic equipment is recorded, the duration of the timer is initialized to be T, and the current position G1 of the electronic equipment is detected every T = T/2. If G1-G0 < a specific value S, the timer is reset to T, namely within the radius of S, the timer duration is reset every T/2 duration. However, the above examples are merely exemplary, and the present disclosure is not limited thereto. The values of T and S described above may be set differently according to user requirements.

When the timer for a record expires, the record may be deleted.

According to embodiments of the present disclosure, the pseudo base station cell list may be updated in real time. For example, expired records may be deleted periodically, and new pseudo base station cell records may be added.

The read cell information may be compared with each pseudo base station cell information in the pseudo base station cell list, and if the read cell information matches the pseudo base station cell information, it is determined that the read cell exists in the pseudo base station cell list, and if the read cell information does not match the pseudo base station cell information, it is determined that the read cell does not exist in the pseudo base station cell list.

As an example, the cell information read at step S101 may be compared with the pseudo base station cell information in the pseudo base station cell list, starting from the head of the pseudo base station cell list, to determine whether the read cell exists in the pseudo base station cell list. And when the read cell information is completely matched with each element of the pseudo base station cell information in the pseudo base station cell list, indicating that the currently read cell exists in the pseudo base station cell list, and performing step S103 at this moment, or performing step S104.

In step S103, in the case where the read cell exists in the pseudo base station cell list, cell information of the next cell may be read. And when the read cell information is completely matched with the pseudo base station cell information in the pseudo base station cell list, returning that the current cell selection or cell reselection fails, and entering a next cell selection or cell reselection process.

In step S104, in case that the read cell does not exist in the pseudo base station cell list, a registration request may be transmitted. If the pseudo base station cell information completely matched with the read cell information cannot be found by searching the whole pseudo base station cell list, the currently read cell does not exist in the pseudo base station cell list, and a registration process can be initiated at the moment.

According to the embodiment of the disclosure, in the registration process, other system information of the current cell can be read and stored. Whether the current cell is a public security pseudo base station cell may then be determined based on other system information and whether two conditions are received for network rejection at cell selection or at cell reselection. The ATTACH procedure may be triggered during LTE cell selection and the TAU procedure may be triggered during cell reselection. NR cell selection and cell reselection may trigger a Registration procedure.

Here, the other system information may include system broadcast messages other than the MIB and SIB 1. For example, the other system information may include content in SIB4 of the LTE network and/or content in SIB3 of the NR network. However, the above examples are merely exemplary, and the present disclosure is not limited thereto.

When a reject response to the registration request is received, it may be determined whether the read other system information satisfies a preset condition. For example, during the registration process, it may be determined whether the blacklisted intra-frequency neighboring cell list (intraFreqBlackCellList) is included in the other system information and whether the physical cell identification range in the blacklisted intra-frequency neighboring cell list includes the current cell. Wherein for LTE cells intrafeqblackcelllist is broadcast in SIB4 and for NR cells intrafeqblackcelllist is broadcast in SIB 3.

When it is determined that the read other system information satisfies the preset condition, the read cell may be determined as a pseudo base station cell, and the cell information may be added to the pseudo base station cell list and the timer information of the cell information may be set. In this way, the pseudo base station can not be registered again when the pseudo base station is registered next time.

According to embodiments of the present disclosure, the pseudo base station cell list may be created in advance, initialized to empty after each power-on of the electronic device. When a cell satisfying the characteristics of the pseudo base station is detected, the cell information of the cell can be generated into a record and a timer is set, and the record is added into a pseudo base station cell list. Further, some pseudo base station cells (e.g., previously detected pseudo base station cells) may be stored in the pseudo base station cell list in advance, and the records in the pseudo base station cell list may be updated according to the actual situation.

According to the embodiments of the present disclosure, after determining that the cell to be registered belongs to the pseudo base station cell by using the pseudo base station cell list, the electronic device may avoid registering to the pseudo base station. Even if the public security pseudo base station cell to be registered is not recorded in the pseudo base station cell list, the electronic equipment only needs to reside in the public security pseudo base station cell for the first time, then the cell is added into the pseudo base station cell list, and the electronic equipment cannot be reselected to the cell after being kicked out. Therefore, the electronic equipment has the short-term no-service phenomenon only for the first time, and the phenomenon that the electronic equipment has the short-term no-service phenomenon because the electronic equipment reselects the pseudo base station cell continuously is avoided.

Fig. 2 illustrates a flowchart of a cell selection method according to another exemplary embodiment of the present disclosure.

Referring to fig. 2, cell information is read in step S201. The target cell information is read when the current cell signal satisfies the cell selection (the cell is a suitable cell and the signal reception level strength satisfies the cell selection criterion), or when the neighbor cell satisfies the cell reselection condition.

The cell information may include, but is not limited to, cell frequency point, PCI, TAC, cellid. The frequency point information is determined when the device scans, the PCI is determined when the synchronization channel demodulates, and the TAC and the cellid are contained in the SIB 1.

In step S202, it is determined whether the read cell exists in the pseudo base station cell list.

When it is determined that the read cell exists in the pseudo base station cell list, indicating that the current cell selection or cell reselection fails, step S203 may be performed to enter the selection procedure of the next cell.

When it is determined that the read cell does not exist in the pseudo base station cell list, step S204 may be performed to enter a normal registration procedure. Other system information may be read and stored. Other system messages may refer to system broadcast messages other than MIB and SIB1, e.g., may refer to content in SIB4 of LTE network or SIB3 of NR network.

Each record stored in the pseudo base station cell list may contain cell information and information aging, that is, each record maintains a timer, and when the timer expires, the record may be deleted.

The pseudo base station cell information may include, but is not limited to, cell frequency point, PCI, TAC, cellid.

The cell information extracted in step 201 may be searched and compared from the header of the pseudo base station cell list, and if the information is completely matched, it indicates that the cell exists in the pseudo base station cell list, and the current cell selection or cell reselection is failed, and the next cell selection or cell reselection procedure is entered (i.e., step S203). If no matching record can be found by searching the entire pseudo base station cell list, which indicates that the cell is not in the pseudo base station cell list, a registration procedure can be initiated (i.e., step S204).

In step S205, it is determined whether registration is rejected. If it is determined that the registration is rejected, step S206 is performed, otherwise the registration is performed.

In step S206, it may be determined whether other system information broadcasts the blacklisted intra-frequency neighboring cell list and whether the blacklisted intra-frequency neighboring cell list includes a currently registered cell according to the read other system information.

If other system information broadcasts the blacklisted intra-frequency neighboring cell list and the blacklisted intra-frequency neighboring cell list contains the currently registered cell, the step S207 is performed, otherwise, the registration is continuously performed.

For example, when ATTACH reject or TAU reject or Registration reject is received, it may be queried whether the system message of the cell contains intrafreq blackcelllist and the PCI range in intrafreq blackcelllist contains the cell. If so, the pseudo base station is identified.

In step S207, add the current cell to the pseudo base station cell list and set the corresponding timer information, and execute step S203 to enter the selection process of the next cell.

When a cell meeting the characteristics of the pseudo base station is detected, a record can be generated by information of the cell such as { frequency point, TAC, PCI, cellid } and the like, and a timer is set and added into a pseudo base station cell list. For timer aging of the added record, a timer duration T may be initialized, a current position G1 of the terminal may be detected every predetermined duration T/2, a distance difference between a position G0 of the terminal and the current position G1 of the terminal when the record is added to the pseudo base station cell list is calculated, and the timer duration may be reset to T when the calculated distance difference is within a predetermined range.

Fig. 3 illustrates a block diagram of a cell selection apparatus according to an exemplary embodiment of the present disclosure. Referring to fig. 3, the cell selection apparatus 300 may include a reading module 301, a processing module 302, and a storing module 303. Each module in the cell selection apparatus 300 may be implemented by one or more modules, and names of the corresponding modules may vary according to types of the modules. In various embodiments, some modules in the cell selection apparatus 300 may be omitted, or additional modules may also be included. Furthermore, modules/elements according to various embodiments of the present disclosure may be combined to form a single entity, and thus the functions of the respective modules/elements may be equivalently performed prior to the combination.

The cell selection apparatus 300 may be a component in an electronic device or as a separate device.

The reading module 301 may read cell information of a current cell or a target cell to be registered with. The cell information may include cell frequency points, physical cell identification, tracking area code, and cell ID.

The processing module 302 may determine whether the cell exists in the pseudo base station cell list according to the read cell information.

The storage module 303 may be configured to store a pseudo base station cell list. The pseudo base station cell list may include pseudo base station cell information of the pseudo base station cells and timer information corresponding to each piece of the pseudo base station cell information, where the timer information may be used to control deletion of the corresponding pseudo base station cell information from the pseudo base station cell list after expiration of the timer.

The timer duration in the timer information may be updated according to the mobile location of the terminal. For example, the processor 302 may initialize a timer duration T corresponding to the pseudo base station cell information, detect the current location G1 of the terminal every predetermined duration T/2, calculate a distance difference between the location G0 of the terminal and the current location G1 of the terminal when the pseudo base station cell information is added to the pseudo base station cell list, and reset the timer duration to T when the distance difference is within a predetermined range.

The processing module 302 may compare the read cell information with pseudo base station cell information in the pseudo base station cell list. And if the read cell information is not matched with the cell information of the pseudo base station, determining that the cell exists in the cell list of the pseudo base station.

In the case that the read cell exists in the pseudo base station cell list, indicating that the cell is a pseudo base station cell, the processing module 302 may control the reading module 301 to read cell information of other suitable cells.

In the case where the read cell is not present in the pseudo base station cell list, the processing module 302 may send a registration request.

While performing the registration procedure, the processing module 302 may control the reading module 301 to read other system information of the current cell. When the cell selection apparatus 300 receives a reject response to the registration request, the processing module 302 may determine whether the read other system information satisfies a preset condition. For example, the preset condition may be set such that the other system information includes a blacklisted intra-frequency neighbor list and the physical cell identification range in the blacklisted intra-frequency neighbor list includes the current cell. Reading other system information may be performed simultaneously with reading cell information.

When it is determined that the other system information satisfies the preset condition, the processing module 302 may determine the cell as a pseudo base station cell, add the cell information to a pseudo base station cell list, and set timer information of the cell information. In this way, the cell selection apparatus 300 can be made not to register the pseudo base station again next time.

Fig. 4 shows a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure. The electronic device of fig. 4 can prevent the pseudo base station from being repeatedly registered, and avoid the network service from being used in a specific area. In an example embodiment of the present disclosure, the electronic device may include, for example, but not limited to, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, and the like. According to the embodiments of the present disclosure, the electronic apparatus is not limited to the above.

As shown in fig. 4, the electronic device 400 may include: a processing component 401, a communication bus 402, a network interface 403, an input output interface 404, a memory 405, and a power component 406. Wherein a communication bus 402 is used to enable connective communication between these components. The input-output interface 404 may include a video display (such as a liquid crystal display), a microphone and speakers, and a user-interaction interface (such as a keyboard, mouse, touch-input device, etc.), and optionally, the input-output interface 404 may also include a standard wired interface, a wireless interface. The network interface 403 may optionally include a standard wired interface, a wireless interface (e.g., a wi-fi interface). Memory 405 may be a high speed random access memory or may be a stable non-volatile memory. The memory 405 may alternatively be a storage device separate from the aforementioned processing component 401.

Those skilled in the art will appreciate that the configuration shown in fig. 4 does not constitute a limitation of the electronic device 400, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 4, the memory 405, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, a cell selection program, and a database.

In the electronic device 400 shown in fig. 4, the network interface 403 is mainly used for data communication with an external device/terminal; the input/output interface 404 is mainly used for data interaction with a user; the processing component 401 and the memory 405 in the electronic device 400 may be disposed in the electronic device 400, and the electronic device 400 may call the program stored in the memory 405 and various APIs provided by the operating system through the processing component 401 to perform the cell selection method provided by the embodiments of the present disclosure.

The processing component 401 may include at least one processor, and the memory 405 has stored therein a set of computer-executable instructions that, when executed by the at least one processor, perform a data cell selection method in accordance with an embodiment of the present disclosure. Further, the processing component 401 may perform encoding operations and decoding operations, and the like. However, the above examples are merely exemplary, and the present disclosure is not limited thereto.

As an example, processing component 401 may read cell information of a current cell or a target cell to which to register. The cell information may include cell frequency points, physical cell identification, tracking area code, and cell ID.

Processing component 401 may determine from the read cell information whether the cell is present in the pseudo base station cell list.

Memory 405 may be used to store a pseudo base station cell list. The pseudo base station cell list may include pseudo base station cell information of the pseudo base station cell and timer information corresponding to each piece of the pseudo base station cell information, where the timer information may be used to control deletion of the corresponding pseudo base station cell information from the pseudo base station cell list after expiration of the timer.

The timer duration in the timer information may be updated according to the mobile location of the terminal. For example, processing component 401 may initialize a timer duration T corresponding to the pseudo base station cell information, detect the current location G1 of the terminal every predetermined duration T/2, calculate a distance difference between the location G0 of the terminal and the current location G1 of the terminal when the pseudo base station cell information is added to the pseudo base station cell list, and reset the timer duration to T when the distance difference is within a predetermined range.

The processing component 401 may compare the read cell information with pseudo base station cell information in a pseudo base station cell list. And if the read cell information is not matched with the cell information of the pseudo base station, determining that the cell exists in the cell list of the pseudo base station.

In case the read cell is present in the pseudo base station cell list, indicating that the cell is a pseudo base station cell, the processing component 401 may read cell information of other suitable cells.

In case the read cell is not present in the pseudo base station cell list, processing component 401 may send a registration request.

While performing the registration procedure, the processing component 401 may read other system information of the current cell. When the electronic device 400 receives a reject response to the registration request, the processing component 401 may determine whether the read other system information satisfies a preset condition. For example, the preset condition may be set such that the other system information includes a blacklisted intra-frequency neighbor list and the physical cell identification range in the blacklisted intra-frequency neighbor list includes the current cell.

When it is determined that the other system information satisfies the preset condition, the processing component 401 may determine the cell as a pseudo base station cell, and add the cell information to the pseudo base station cell list and set timer information of the cell information. In this way, the electronic device 400 may be prevented from registering the pseudo base station again the next time.

Referring to fig. 5, a computing device 500 according to an exemplary embodiment of the present disclosure includes a memory 501 and a processor 502, the memory 501 having stored thereon a computer program that, when executed by the processor 502, implements a cell selection method according to an exemplary embodiment of the present disclosure.

As an example, the computer program, when executed by the processor 502, may implement the steps of: reading cell information; determining whether the cell exists in a pseudo base station cell list according to the cell information; reading cell information of a next cell in a case where the cell exists in the pseudo base station cell list. Sending a registration request if the cell is not present in the pseudo base station cell list.

Furthermore, the computer program, when executed by the processor 502, may implement the steps of: reading other system information of the cell in the registration process; when a rejection response to the registration request is received, determining whether the other system information meets a preset condition; and when the other system information is determined to meet the preset condition, determining the cell as a pseudo base station cell, adding the cell information into the pseudo base station cell list and setting timer information of the cell information.

The computing devices in the embodiments of the present disclosure may include, but are not limited to, devices such as mobile phones, notebook computers, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, and the like. The computing device shown in fig. 5 is only one example and should not bring any limitations to the functionality or scope of use of the embodiments of the present disclosure.

As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuitry"). A module may be a single integrated component adapted to perform one or more functions or a minimal unit or portion of the single integrated component. For example, according to an embodiment, the modules may be implemented in the form of Application Specific Integrated Circuits (ASICs).

The various embodiments set forth herein may be implemented as software including one or more instructions stored in a storage medium readable by a machine (e.g., a mobile device). For example, under control of a processor, the processor of the machine may invoke and execute at least one of the one or more instructions stored in the storage medium with or without the use of one or more other components. This enables the machine to be operable to perform at least one function in accordance with the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code capable of being executed by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Where the term "non-transitory" simply means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

According to embodiments, methods according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be used as a product for conducting a transaction between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium, such as a compact disc read only memory (CD-ROM), or may be distributed (e.g., downloaded or uploaded) online via an application store (e.g., a Play store), or may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smartphones). At least part of the computer program product may be temporarily generated if it is published online, or at least part of the computer program product may be at least temporarily stored in a machine readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or a forwarding server.

According to various embodiments, each of the above components (e.g., modules or programs) may comprise a single entity or multiple entities (e.g., in fig. 5, memory 501 may comprise one or more memories and processor 502 may comprise one or more processors). According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as the corresponding one of the plurality of components performed the one or more functions prior to integration. Operations performed by a module, program, or another component may be performed sequentially, in parallel, repeatedly, or in a heuristic manner, or one or more of the operations may be performed in a different order or omitted, or one or more other operations may be added, in accordance with various embodiments.

At least one of the plurality of modules may be implemented by an AI model. The functions associated with the AI may be performed by the non-volatile memory, the volatile memory, and the processor.

The processor may include one or more processors. At this time, the one or more processors may be general-purpose processors such as a Central Processing Unit (CPU), an Application Processor (AP), etc., graphics-only processors such as a Graphics Processor (GPU), a Visual Processor (VPU), and/or an AI-specific processor such as a Neural Processing Unit (NPU).

The one or more processors control the processing of the input data according to predefined operating rules or Artificial Intelligence (AI) models stored in the non-volatile memory and the volatile memory. Predefined operating rules or artificial intelligence models may be provided through training or learning. Here, the provision by learning means that a predefined operation rule or AI model having a desired characteristic is formed by applying a learning algorithm to a plurality of learning data. The learning may be performed in the device itself performing the AI according to the embodiment, and/or may be implemented by a separate server/device/system.

While the present disclosure has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

Claims

1. A method of cell selection, the method comprising:

reading cell information;

determining whether the cell exists in a pseudo base station cell list according to the cell information;

reading cell information of a next cell under the condition that the cell exists in the pseudo base station cell list;

sending a registration request if the cell is not present in the pseudo base station cell list.

2. The method of claim 1, wherein the cell information comprises a cell frequency point, a physical cell identification, a tracking area code, and a cell ID.

3. The method of claim 1, wherein the pseudo base station cell list includes pseudo base station cell information of pseudo base station cells and timer information corresponding to each piece of pseudo base station cell information,

and the timer information is used for controlling the deletion of the corresponding pseudo base station cell information from the pseudo base station cell list after the timer expires.

4. The method of claim 3, wherein the timer duration in the timer information is updated according to the mobile location of the terminal.

5. The method of claim 4, wherein the timer duration in the timer information is updated by:

initializing a timer duration T corresponding to the pseudo base station cell information;

detecting the current position G1 of the terminal every a preset time length T/2;

calculating the distance difference between the position G0 of the terminal and the current position G1 of the terminal when the pseudo base station cell information is added into the pseudo base station cell list;

when the range difference is within a predetermined range, a timer duration is reset to T.

6. The method of claim 3, wherein determining whether the cell exists in a pseudo base station cell list based on the cell information comprises:

comparing the cell information with the pseudo base station cell information;

if the cell information is matched with the pseudo base station cell information, determining that the cell exists in the pseudo base station cell list;

determining that the cell does not exist in the pseudo base station cell list if the cell information does not match the pseudo base station cell information.

7. The method of claim 1, wherein the cell selection method further comprises:

reading other system information of the cell;

when a response to the registration request is rejected, determining whether the other system information meets a preset condition;

and when the other system information is determined to meet the preset condition, determining the cell as a pseudo base station cell, adding the cell information into the pseudo base station cell list and setting timer information of the cell information.

8. The method of claim 7, wherein the predetermined condition is that the other system information includes a blacklisted intra-frequency neighbor list and a physical cell identification range in the blacklisted intra-frequency neighbor list includes the cell.

9. An apparatus for cell selection, the apparatus comprising:

a reading module configured to read cell information;

a processing module configured to:

under the condition that the cell exists in the pseudo base station cell list, controlling a reading module to read cell information of a next cell;

10. The apparatus of claim 9, wherein the cell information comprises a cell frequency point, a physical cell identification, a tracking area code, and a cell ID.

11. The apparatus of claim 9, wherein the pseudo base station cell list includes pseudo base station cell information of pseudo base station cells and timer information corresponding to each piece of pseudo base station cell information,

12. The apparatus of claim 11, wherein a timer duration in the timer information is updated according to a mobile location of the terminal.

13. The apparatus of claim 12, wherein the timer duration in the timer information is updated by:

calculating a distance difference between a position G0 of the terminal and a current position G1 of the terminal when the pseudo base station cell information is added to the pseudo base station cell list;

14. The apparatus of claim 11, wherein the processing module is configured to:

comparing the cell information with the pseudo base station cell information;

15. The apparatus of claim 9, wherein the processing module is configured to:

reading other system information of the cell;

16. The apparatus of claim 15, wherein the predetermined condition is that the other system information includes a blacklisted intra-frequency neighbor list and a physical cell identification range in the blacklisted intra-frequency neighbor list includes the cell.

17. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the cell selection method of any of claims 1 to 8.

18. A computing device, comprising:

a processor;

memory storing a computer program which, when executed by the processor, implements the cell selection method of any one of claims 1 to 8.