CN111163502A

CN111163502A - Cell selection method, device, computer storage medium and equipment

Info

Publication number: CN111163502A
Application number: CN202010159320.7A
Authority: CN
Inventors: 林进全
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-05-15

Abstract

The embodiment of the application discloses a cell selection method, a device, a computer storage medium and equipment, wherein the method comprises the following steps: determining an initial cell which accords with a first preset rule; the first preset rule is used for selecting a cell meeting preset conditions of a downlink channel; acquiring an uplink interference parameter of the initial cell based on the determined initial cell; judging whether the initial cell accords with a second preset rule or not based on the comparison of the uplink interference parameter of the initial cell and a preset threshold value; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel; and when the initial cell accords with a second preset rule, determining the initial cell as a target cell and performing residence.

Description

Cell selection method, device, computer storage medium and equipment

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a cell selection method, an apparatus, a computer storage medium, and a device.

Background

A cell, i.e. an area covered by one or a part of a base station (sector antenna) in a cellular mobile communication system. When the mobile terminal is powered on or enters a coverage area from a blind area, the mobile terminal searches all frequency points allowed by a Public Land Mobile Network (PLMN) and selects a suitable cell to camp on, which is called "cell selection".

At present, when a mobile terminal selects a cell to camp on, a traditional cell selection process only focuses on ensuring downlink performance of the mobile terminal, and often ignores uplink channel conditions, so that the mobile terminal is most likely to select a cell with a better downlink channel but a poorer uplink channel, thereby causing a random access failure when a Radio Resource Control (RRC) connection needs to be established after the cell selection or causing communication abnormalities in other uplink processes after the RRC connection is established, resulting in failure of registration, a call service, a data service, a short message service, and the like.

Disclosure of Invention

The application provides a cell selection method, a device, a computer storage medium and equipment, which can eliminate a cell with poor uplink channel condition on the basis of considering downlink channel condition, and can avoid the problem that the cell with poor uplink channel is selected only in consideration of the downlink channel condition.

In order to achieve the purpose, the technical scheme of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a cell selection method, where the method includes:

determining an initial cell which accords with a first preset rule; the first preset rule is used for selecting a cell meeting preset conditions of a downlink channel;

acquiring an uplink interference parameter of the initial cell based on the determined initial cell;

judging whether the initial cell accords with a second preset rule or not based on the comparison of the uplink interference parameter of the initial cell and a preset threshold value; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel;

and when the initial cell accords with a second preset rule, determining the initial cell as a target cell and performing residence.

In a second aspect, an embodiment of the present application provides a cell selection apparatus, which includes a determining unit, an obtaining unit, a comparing unit, and a selecting unit; wherein the content of the first and second substances,

the determining unit is configured to determine an initial cell meeting a first preset rule; the first preset rule is used for selecting a cell meeting preset conditions of a downlink channel;

the obtaining unit is configured to obtain an uplink interference parameter of the initial cell based on the determined initial cell;

the comparison unit is configured to judge whether the initial cell meets a second preset rule based on comparison between the uplink interference parameter of the initial cell and a preset threshold; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel;

the selection unit is configured to determine the initial cell as a target cell and perform camping when the initial cell meets a second preset rule.

In a third aspect, an embodiment of the present application provides a cell selection apparatus, which includes a memory and a processor; wherein the content of the first and second substances,

the memory for storing a computer program operable on the processor;

the processor, when executing the computer program, is adapted to perform the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a computer storage medium storing a cell selection program that, when executed by at least one processor, implements the method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a mobile device, which includes at least the cell selection apparatus according to the second aspect or the third aspect.

According to the cell selection method, the cell selection device, the computer storage medium and the cell selection equipment provided by the embodiment of the application, an initial cell which accords with a first preset rule is determined; the first preset rule is used for a cell meeting preset conditions of a downlink channel; acquiring an uplink interference parameter of the initial cell based on the determined initial cell; judging whether the initial cell accords with a second preset rule or not based on the comparison of the uplink interference parameter of the initial cell and a preset threshold value; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel; and when the initial cell accords with a second preset rule, determining the initial cell as a target cell and performing residence. Therefore, the uplink channel condition can be measured by utilizing the uplink interference parameters, so that a cell with poor uplink channel condition can be eliminated in the cell selection process, and meanwhile, the downlink channel condition can be considered according to the first preset rule, so that the cell with poor uplink channel condition can be avoided being selected only by considering the downlink channel condition, and the communication performance can be improved.

Drawings

Fig. 1 is a schematic flowchart of a cell selection method according to an embodiment of the present application;

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

fig. 3 is a detailed flowchart of another cell selection method according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a cell selection apparatus according to an embodiment of the present application;

fig. 5 is a schematic hardware structure diagram of a cell selection apparatus according to an embodiment of the present application;

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.

In an embodiment of the present application, referring to fig. 1, a flowchart of a cell selection method provided in an embodiment of the present application is shown. As shown in fig. 1, the method may include:

s101: determining an initial cell which accords with a first preset rule;

it should be noted that the cell selection method is applied to a mobile device. When the mobile device is powered on, the mobile device will attempt to establish a connection with a Public Land Mobile Network (PLMN) allowed by a Subscriber Identity Module (SIM), and at this time, the mobile device will select a suitable cell; that is to say, the cell selection method according to the embodiment of the present application may be applied to a mobile device boot-up scenario, and may also be applied to other network searching scenarios (for example, a mobile device is in a switch flight mode, and a state from a no-signal state to a signal state, etc.), which is not limited herein.

In addition, in a mobile communication system, Wideband Code Division Multiple Access (WCDMA) is a Wideband spread spectrum mobile communication air interface using a Code division multiple access (or CDMA universal multiplexing) method; thus, when using WCDMA for selecting a suitable cell, the selection can be generally performed according to the third generation partnership Project (3rd 3GPP) protocol, and the conditions to be satisfied include the following:

(1) the cell belongs to a selected PLMN, a registered PLMN, or an equivalent PLMN;

(2) if belonging to a Closed Subscriber Group (CSG) cell, the cell should be a CSG member cell for the mobile device;

(3) the cell is not disabled;

(4) the cell does not belong to a Location Area (LA) of a plurality of location areas (forbidden LAs) for which roaming is forbidden;

(5) relevant parameters (mainly referred to as downlink channel parameters) of the cell meet the S criterion.

In the embodiment of the present application, the above (1) to (5) are mainly used for performing cell selection for a downlink channel condition, and may be used as a first preset rule; that is, the first preset rule is used for selecting a cell satisfying a preset condition of a downlink channel. In other words, the initial cell is obtained by selecting the cell according to the first preset rule conforming to the 3GPP protocol, and can filter out the cell with the downlink channel difference; thus, for example, the cell selection is performed by using the S criterion, the determined downlink channel of the initial cell is better, and the downlink communication performance of the mobile device can be ensured; however, in order to avoid selecting a cell with a poor uplink channel, cell selection may be performed again for the determined initial cell at this time.

S102: acquiring an uplink interference parameter of the initial cell based on the determined initial cell;

it should be noted that the uplink Interference parameter can be expressed by an UL-Interference parameter. After the initial cell is determined, a System Information Block (SIB) message, such as a SIB7 message, of the initial cell may be acquired, and then uplink interference parameters may be checked based on the SIB7 message to measure an uplink channel condition of the initial cell.

Specifically, in some embodiments, the obtaining the uplink interference parameter of the initial cell based on the determined initial cell may include:

acquiring a SIB7 message of the initial cell based on the determined initial cell;

obtaining uplink interference parameters of the initial cell from the obtained SIB7 message.

Here, the types of SIB messages may include 13 types, such as SIB1, SIB2, SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, SIB12, SIB13, and different SIB messages carry different parameters, which may have different purposes. Taking SIB7 message as an example, SIB7 message is a service access control parameter, and may change with a change in radio environment, that is, SIB7 message needs to be read periodically; thus, the UL-Interference parameter can be periodically obtained. Thus, after an initial cell conforming to the 3GPP protocol is determined, the corresponding UL-Interference parameter can be checked according to the SIB7 message of the initial cell.

S103: judging whether the initial cell accords with a second preset rule or not based on the comparison of the uplink interference parameter of the initial cell and a preset threshold value;

it should be noted that, after the uplink interference parameter of the initial cell is obtained, the uplink interference parameter of the initial cell may be compared with a preset threshold to determine whether the initial cell meets a second preset rule. Here, the second preset rule is used for selecting a cell meeting the preset condition of the uplink channel, that is, the second preset rule is different from the first preset rule; specifically, the first preset rule is used for measuring the downlink channel condition to select a suitable cell with a better downlink channel, and the second preset rule is used for measuring the uplink channel condition to select a suitable cell with a better uplink channel.

It should be further noted that the preset threshold is a preset measurement standard for determining whether the initial cell meets a second preset rule; the unit of the preset threshold may be expressed in decibel-milliwatt (dBm), which is an absolute value indicating power, and is only a relative value different from decibel (dB). In addition, the preset threshold may include a first preset threshold and a second preset threshold; for example, the first preset threshold may be-90 dBm, and the second preset threshold may be-80 dBm, but the embodiment of the present application is not particularly limited.

Specifically, in some embodiments, the determining whether the initial cell meets a second preset rule based on the comparison between the uplink interference parameter of the initial cell and a preset threshold may include:

comparing the uplink interference parameter of the initial cell with a first preset threshold value;

when the uplink interference parameter of the initial cell is larger than a first preset threshold value, determining that the initial cell does not accord with a second preset rule;

when the uplink interference parameter of the initial cell is less than or equal to a first preset threshold, the method further includes:

if the preset database is not empty and the cell signal intensity value of the initial cell is smaller than a preset intensity threshold value, determining that the initial cell does not conform to a second preset rule;

and if the preset database is empty or the cell signal intensity value of the initial cell is greater than or equal to a preset intensity threshold value, determining that the initial cell conforms to a second preset rule.

That is, assuming that the first preset threshold may be-90 dBm, if the uplink interference parameter of the initial cell is greater than-90 dBm, it indicates that the initial cell does not comply with the second preset rule; if the uplink interference parameter of the initial cell is less than or equal to-90 dBm, this time can be divided into two cases: when the preset database is not empty and the cell signal intensity value of the initial cell is smaller than the preset intensity threshold, indicating that the initial cell does not conform to a second preset rule; and when the preset database is empty or the cell signal intensity value of the initial cell is greater than or equal to the preset intensity threshold value, the initial cell is shown to accord with a second preset rule, and the judgment of whether the initial cell accords with the second preset rule can be realized.

In the embodiment of the present application, the preset database is a pre-established database, and is used for storing the cell considered by the mobile device as having a poor uplink channel or a poor downlink channel. Before executing the cell selection method, a preset database needs to be emptied; that is, before determining the initial cell complying with the first preset rule, the method may further include: and emptying the preset database.

In this way, in the process of cell selection, according to the comparison between the uplink interference parameter of the initial cell and the preset threshold, part of the initial cell which does not conform to the second preset rule can be stored in the preset database, so as to judge whether the preset database is empty or not in the following; for example, when the uplink interference parameter of the initial cell is less than or equal to the first preset threshold, the preset database is non-empty, and the cell signal strength value of the initial cell is less than the preset strength threshold, at this time, the initial cell does not conform to the second preset rule, the initial cell and the corresponding cell signal strength value may be stored in the preset database, and then step S104 is executed.

S104: and when the initial cell accords with a second preset rule, determining the initial cell as a target cell and performing residence.

It should be noted that, after determining whether the initial cell meets the second preset rule, the method may further include: and when the initial cell does not accord with a second preset rule, returning to the step of executing the step of determining the initial cell which accords with the first preset rule until the initial cell accords with the second preset rule so as to select a target cell which accords with the second preset rule and reside.

That is, after the uplink interference parameter of the initial cell is obtained, comparing the uplink interference parameter of the initial cell with a preset threshold, and if the initial cell does not meet a second preset rule according to the comparison result, at this time, returning to the step of executing S101 until a target cell meeting the second preset rule is selected; if the initial cell meets the second preset rule, the initial cell can be directly determined as the target cell and resident at the time.

The embodiment provides a cell selection method, which includes determining an initial cell meeting a first preset rule; the first preset rule is used for selecting a cell meeting preset conditions of a downlink channel; acquiring an uplink interference parameter of the initial cell based on the determined initial cell; judging whether the initial cell accords with a second preset rule or not based on the comparison of the uplink interference parameter of the initial cell and a preset threshold value; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel; and when the initial cell accords with a second preset rule, determining the initial cell as a target cell and performing residence. Therefore, the uplink channel condition can be measured by utilizing the uplink interference parameters, so that a cell with poor uplink channel condition can be eliminated in the cell selection process, and meanwhile, the downlink channel condition can be considered according to the first preset rule, so that the problem that the cell with poor uplink channel is selected due to the fact that only the downlink channel condition is considered can be solved, and due to the fact that the uplink channel condition and the downlink channel condition are considered, the consequences of failure of registration, conversation service, data service, short message service and the like caused by abnormal uplink channel communication can be avoided, and the communication performance is improved.

In another embodiment of the present application, the cell selection rule generally used includes: (1) selecting a target cell on a plurality of frequency points in a frequency point list according to the frequency point list stored by the mobile equipment; (2) the target cell is selected on the full band information. When the target cell cannot be found according to the stored frequency point list or the frequency point list is not stored in the mobile device, the process of selecting the target cell on the full-band information can be immediately entered at this time, or the process of selecting the target cell on the full-band information can be entered under the condition that the preset condition is met.

Optionally, in some embodiments, for the method for selecting a cell according to the frequency point list saved by the mobile device, for S101, the determining an initial cell that meets the first preset rule may include:

determining a frequency point list stored by the mobile equipment; the frequency point list comprises at least one frequency point;

measuring each frequency point in the frequency point list respectively, obtaining a frequency point signal intensity value corresponding to each frequency point and sequencing the obtained frequency point signal intensity values;

judging whether the frequency point list has unselected frequency points;

if the unselected frequency points exist in the frequency point list, selecting the frequency point with the maximum frequency point signal intensity value from the unselected frequency points as a frequency point to be tested;

and determining an initial cell which accords with a first preset rule according to the cell measurement result of the frequency point to be tested.

Optionally, in some embodiments, for the method of performing cell selection according to the full band information covered by the mobile device, for S101, the determining the initial cell meeting the first preset rule may include:

determining full-band information covered by the mobile device;

dividing the full-band information into a plurality of frequency band lists according to the determined full-band information and preset intervals; each frequency band list comprises at least one frequency point;

judging whether an unselected frequency band list exists in the plurality of frequency band lists;

if the unselected frequency band lists exist in the plurality of frequency band lists, selecting a frequency band list to be tested from the unselected frequency band lists according to a preset frequency band sequence;

aiming at the frequency band list to be tested, measuring each frequency point in the frequency band list to be tested respectively, obtaining a frequency point signal intensity value corresponding to each frequency point and sequencing the obtained frequency point signal intensity values;

judging whether the frequency band list to be tested has unselected frequency points;

if the frequency band list to be tested has unselected frequency points, selecting the frequency point with the maximum frequency point signal intensity value from the unselected frequency points as the frequency point to be tested;

Further, in some embodiments, the determining an initial cell according to a first preset rule according to the cell measurement result of the frequency point to be tested may include:

carrying out cell measurement on the frequency points to be tested to obtain cell measurement results; the cell measurement result comprises whether a cell exists in the frequency point to be tested and a corresponding cell signal intensity value;

when the frequency point to be tested has a plurality of cells, judging whether unselected cells exist in the plurality of cells;

if the unselected cells exist in the plurality of cells, selecting the cell with the largest cell signal intensity value from the unselected cells, and judging whether the selected cell meets a preset protocol rule or not;

when the selected cell is judged to meet the preset protocol rule, determining the selected cell as an initial cell meeting a first preset rule;

and when the selected cell is judged not to meet the preset protocol rule, continuously judging whether the unselected cells exist in the plurality of cells or not so as to determine the initial cell meeting the first preset rule.

It should be noted that, in a possible implementation, performing cell selection based on a frequency point list stored by a mobile device, after determining an initial cell meeting a first preset rule, executing the cell selection method shown in fig. 1, if the initial cell does not meet a second preset rule, returning to execute S101, and determining the initial cell meeting the first preset rule again; at this time, whether unselected cells exist in the plurality of cells of the frequency point to be tested is judged firstly, if the judgment result is negative (that is, the plurality of cells of the frequency point to be tested have been tried all), whether unselected frequency points exist in the frequency point list needs to be judged again, and under the condition that a target cell conforming to a second preset rule is not selected, the judging step needs to be executed circularly until all frequency points included in the frequency point list have been tried all.

In another possible embodiment, performing cell selection based on the full-band information covered by the mobile device, after determining an initial cell meeting a first preset rule, performing the cell selection method shown in fig. 1, if the initial cell does not meet a second preset rule, returning to perform S101, and determining the initial cell meeting the first preset rule again; at this time, whether unselected cells exist in a plurality of cells of the frequency point to be tested is judged firstly, if the judgment result is negative (namely that the plurality of cells of the frequency point to be tested have all been tried), whether unselected frequency points exist in a frequency band list to be tested needs to be judged again, if the judgment result is negative (namely that all frequency points of the frequency band list to be tested have all been tried), whether unselected frequency band lists exist in the plurality of frequency band lists of the full-band information needs to be judged again, and under the condition that a target cell meeting a second preset rule is not selected, the judging step needs to be executed in a circulating mode until all frequency band lists included in the full-band information have all been tried.

Further, after determining the initial cell meeting the first predetermined rule each time, the cell selection method shown in fig. 1 needs to be performed to determine whether the initial cell meets the second predetermined rule. Specifically, once an initial cell meeting a first preset rule is determined, an uplink interference parameter of the initial cell may be obtained at this time, and then the uplink interference parameter is compared with a first preset threshold; when the uplink interference parameter is larger than a first preset threshold value, determining that the initial cell does not accord with a second preset rule; when the uplink interference parameter is less than or equal to the first preset threshold, this time includes two cases: if the preset database is not empty and the cell signal intensity value of the initial cell is smaller than the preset intensity threshold, it can be determined that the initial cell does not conform to the second preset rule; and if the preset database is empty or the cell signal strength value of the initial cell is greater than or equal to the preset strength threshold, determining that the initial cell meets the second preset rule.

Optionally, in some embodiments, for the "method for selecting a cell according to a frequency point list saved by a mobile device", for S103, the method may further include:

comparing the uplink interference parameter of the initial cell with a second preset threshold; the second preset threshold is larger than the first preset threshold;

when the uplink interference parameter of the initial cell is larger than a second preset threshold value, ignoring the initial cell, and returning to the step of executing the initial cell which is determined to accord with a first preset rule;

when the uplink interference parameter of the initial cell is smaller than or equal to a second preset threshold and larger than a first preset threshold, storing the initial cell and the corresponding cell signal strength value into a preset database, and returning to the step of executing the step of determining the initial cell which accords with a first preset rule;

when the uplink interference parameter of the initial cell is smaller than or equal to a first preset threshold, if a preset database is not empty and the cell signal intensity value of the initial cell is smaller than a preset intensity threshold, storing the initial cell and the corresponding cell signal intensity value into the preset database, and returning to the step of executing the step of determining the initial cell conforming to a first preset rule;

correspondingly, when all the frequency points in the frequency point list are subjected to cell selection and a target cell meeting a second preset rule is not selected, the method may further include:

judging whether the preset database is empty or not;

and when the preset database is not empty, selecting the cell with the largest cell signal intensity value from the preset database as a target cell and residing.

Optionally, in some embodiments, the method for cell selection according to the full band information covered by the mobile device may further include, for S103:

when the uplink interference parameter of the initial cell is larger than a first preset threshold value, storing the initial cell and the corresponding cell signal strength value into a preset database, and returning to the step of executing the step of determining the initial cell which accords with a first preset rule;

correspondingly, when all frequency band lists in the full-band information are subjected to cell selection and a target cell meeting a second preset rule is not selected, the method may further include:

judging whether the preset database is empty or not;

It should be noted that the preset threshold is a preset measurement standard for determining whether the initial cell meets the second preset rule, and the preset strength threshold is a preset measurement standard for determining the signal strength of the cell. Here, the preset threshold may include a first preset threshold and a second preset threshold, and the first preset threshold is different from the second preset threshold, and the first preset threshold is smaller than the second preset threshold. Illustratively, the first preset threshold may be-90 dBm, the second preset threshold may be-80 dBm, and the preset intensity threshold may be-100 dBm, but the embodiment of the present application is not particularly limited.

It should be further noted that, when all the frequency points in the frequency point list have already performed cell selection and have not selected a target cell meeting the second preset rule, the preset database may be checked at this time, and if the preset database is not empty, a cell with the largest cell signal intensity value may be selected from the preset database as the target cell for residence; if the preset database is empty, stopping the process of cell selection according to the frequency point list stored by the mobile equipment, and then entering the process of cell selection according to the full-band information covered by the mobile equipment; here, the entry may be immediate, or the entry may be made when a preset condition is satisfied; in the process of cell selection according to the full-band information covered by the mobile device, a preset database needs to be emptied, then cell selection is performed based on a plurality of frequency band lists divided by the full-band information, when all the frequency band lists in the full-band information have already performed cell selection and a target cell meeting a second preset rule is not selected, the preset database can still be checked at this time, and if the preset database is empty, the process of cell selection according to the full-band information covered by the mobile device can be stopped; if the preset database is not empty, a cell with the largest cell signal strength value can be selected from the preset database as a target cell for residing.

Since the conventional cell selection process only focuses on ensuring the downlink performance of the mobile device (for example, when calculating the S-criterion, the relevant parameters are only focused on the downlink part), the mobile device ignores the uplink channel condition when performing the target cell selection, so that the mobile device is most likely to select a cell with a better downlink channel but a worse uplink channel. In the embodiment of the present application, the uplink Interference parameter (i.e., UL-Interference parameter) in the SIB7 message may be used to preliminarily measure the uplink channel condition, so that a cell with a poor uplink channel condition can be excluded in the target cell selection process; meanwhile, a first preset rule (such as an S rule specified by a traditional protocol) can be used for filtering out a cell with poor downlink channel, namely the downlink channel condition is considered; therefore, the mobile equipment is prevented from selecting the cell with the poor uplink channel only by considering the downlink channel condition through reasonably selecting the uplink channel condition difference and the downlink channel condition difference.

That is, in the embodiment of the present application, using the UL-Interference parameter in the SIB7 message, a cell having the UL-Interference parameter better (i.e., smaller) than the preset threshold may be preferentially selected during the target cell selection. In addition, after the target cell is selected, the embodiment of the application may further record the cell with the poor UL-Interference parameter, which is considered by the mobile device, to obtain a target cell list, which is convenient for the next use; however, this increases complexity and makes it difficult to respond to changes in the UL-Interference parameters.

The present embodiment provides a cell selection method, and the detailed implementation of the foregoing embodiment is described in detail through this embodiment, from which it can be seen that, through the technical solution of the foregoing embodiment, uplink interference parameters are utilized to measure the situation of an uplink channel, so that a cell with a poor uplink channel situation can be excluded during the cell selection process, and meanwhile, the situation of a downlink channel can also be considered according to a first preset rule, so that not only can the problem of selecting a cell with a poor uplink channel due to only considering the situation of the downlink channel be avoided, but also the consequences of failure of registration, a call service, a data service, a short message service, and the like due to an abnormal uplink channel communication can be avoided, and the communication performance is improved.

Based on the same inventive concept of the foregoing embodiments, refer to fig. 2, which shows a detailed flowchart of a cell selection method provided in an embodiment of the present application. As shown in fig. 2, the detailed process may include:

s201: emptying a preset database;

s202: determining a frequency point list stored by the mobile equipment;

the frequency point list comprises at least one frequency point; and then, cell selection can be carried out on each frequency point in the frequency point list so as to determine a target cell.

S203: measuring a frequency point signal intensity value corresponding to each frequency point in the frequency point list and sequencing according to the frequency point signal intensity value;

s204: judging whether the frequency point list has the frequency points which are not tried;

s205: selecting the frequency point with the largest frequency point signal intensity value which is not tried as a frequency point to be tested;

s206: searching a cell at a frequency point to be tested and measuring a cell signal intensity value;

s207: judging whether the cell is found;

it should be noted that, for S207, if the determination result is yes, it indicates that the cell can be found, at this time, S208 is executed; if the judgment result is no, the cell cannot be found, and at this time, the step returns to execute the step S204. For S204, if the determination result is yes, it indicates that there are frequency points in the frequency point list that have not been tried, at this time, S205 is executed; if the result of the determination is negative, it indicates that there are no frequency points in the frequency point list that have not been tried (i.e. all frequency points in the frequency point list have been tried), then S219 is executed.

S208: judging whether the frequency point to be tested has a cell which is not tried;

it should be noted that, for S208, if the determination result is yes, it indicates that there are cells that are not tried in the frequency point to be tested, at this time, S209 is executed; if the judgment result is no, it indicates that there is no cell not tried in the frequency point to be tested, and at this time, the step returns to execute S204.

S209: selecting the cell with the largest non-tried cell signal strength value;

s210: judging whether the selected cell meets a preset protocol rule or not;

it should be noted that, for S210, if the determination result is yes, it indicates that the selected cell meets the preset protocol rule, at this time, S211 is executed; if the result of the determination is negative, it indicates that the selected cell does not satisfy the preset protocol rule, and at this time, the process returns to execute S208.

S211: when the selected cell is judged to meet the preset protocol rule, determining the selected cell as an initial cell meeting a first preset rule;

s212: acquiring UL-Interference parameter values of an initial cell;

s213: judging whether the UL-Interference parameter value is larger than-80 dBm;

s214: when the UL-Interference parameter value is larger than-80 dBm, ignoring the initial cell and returning to execute S208;

s215: judging whether the UL-Interference parameter value is larger than-90 dBm;

s216: judging whether the preset database is non-empty and the cell signal intensity value of the initial cell is less than-100 dBm;

s217: storing the initial cell and the corresponding cell signal strength value into a preset database, and returning to execute S208;

s218: determining the initial cell as a target cell and residing;

it should be noted that, for S213, if the determination result is yes, S214 is executed; if the judgment result is negative, S215 is executed. For S215, if the judgment result is yes, S217 is executed; if the judgment result is negative, S216 is executed. For S216, if the judgment result is yes, S217 is executed; if the judgment result is negative, S218 is executed.

S219: judging whether a preset database is empty or not;

s220: and selecting the cell with the maximum cell signal intensity value from a preset database as a target cell and residing.

It should be noted that, for S219, if the determination result is yes, the flow may be ended; if the determination result is negative, S220 may be performed, and then the flow ends.

That is, it is first necessary to empty the preset database, and then try to select a suitable initial cell according to the signal strength value and according to the requirements of the 3GPP protocol based on each frequency point in the frequency point list, and if an initial cell is selected, then the SIB7 message of the initial cell may be obtained and the UL-Interference parameter may be checked. Thus, if the UL-Interference parameter is larger than-80 dBm, the initial cell is directly omitted, and the next initial cell is continuously searched; if the UL-Interference parameter is larger than-90 dBm but not larger than-80 dBm, the signal intensity of the initial cell and the corresponding cell can be stored in a preset database, and the next initial cell is continuously searched; if the UL-Interference parameter is not greater than-90 dBm, the cell signal strength value of the initial cell is less than-100 dBm, and the predetermined database is not empty, the initial cell and the corresponding cell signal strength value may be added to the predetermined database, and the search for the next initial cell may be continued. Thus, if the initial cell is not ignored or stored in the preset database, the initial cell can be selected as the target cell, and the cell selection process is ended.

It should be further noted that, when all the frequency points in the frequency point list stored in the mobile device are tried and no target cell is selected, it may be determined whether the preset database is empty, and if the preset database is empty, the process of cell selection according to the frequency point list stored in the mobile device is stopped, that is, the flow shown in fig. 2 is ended; otherwise, selecting the cell with the maximum cell signal intensity value from a preset database as the target cell, and ending the cell selection process.

Further, when all the frequency points in the frequency point list stored in the mobile device are tried and no target cell is selected, after the process of cell selection according to the frequency point list stored in the mobile device is stopped, the process of cell selection according to the full-band information covered by the mobile device may be further entered to select the target cell. As shown in fig. 3, a detailed flowchart of another cell selection method provided in the embodiment of the present application is shown, where the detailed flowchart may include:

s301: emptying a preset database;

s302: determining full-band information covered by the mobile device;

s303: dividing the full-band information into a plurality of frequency band lists according to a preset interval;

each frequency band list comprises at least one frequency point; and then, cell selection can be carried out on each frequency point in the frequency band list so as to determine a target cell.

S304: judging whether an unselected frequency band list exists in the plurality of frequency band lists;

s305: selecting a frequency band list to be tested from the unselected frequency band list according to a preset frequency band sequence;

s306: measuring a frequency point signal intensity value corresponding to each frequency point in a frequency band list to be tested and sequencing according to the frequency point signal intensity value;

s307: judging whether the frequency band list to be tested has frequency points which are not tried;

s308: selecting the frequency point with the largest frequency point signal intensity value which is not tried as a frequency point to be tested;

s309: searching a cell at a frequency point to be tested and measuring a cell signal intensity value;

s310: judging whether the cell is found;

it should be noted that, for S310, if the determination result is yes, it indicates that the cell can be found, at this time, S311 is executed; if the result of the determination is no, it indicates that the cell cannot be found, and at this time, the process returns to S307. For S307, if the determination result is yes, it indicates that there are frequency points that have not been tried in the frequency band list to be tested, at this time, S308 is executed; if the result of the determination is negative, it indicates that there is no frequency point that has not been tried in the frequency band list to be tested (i.e. all frequency points in the frequency band list to be tested have been tried), at this time, S320 is executed.

S311: judging whether the frequency point to be tested has a cell which is not tried;

it should be noted that, for S311, if the determination result is yes, it indicates that there are cells that are not tried in the frequency point to be tested, at this time, S312 is executed; if the judgment result is no, it indicates that there is no cell not tried in the frequency point to be tested, and at this time, the step returns to execute S307.

S312: selecting the cell with the largest non-tried cell signal strength value;

s313: judging whether the selected cell meets a preset protocol rule or not;

it should be noted that, for S313, if the determination result is yes, it indicates that the selected cell meets the preset protocol rule, at this time, S314 is executed; if the judgment result is no, it indicates that the selected cell does not satisfy the preset protocol rule, and at this time, the process returns to execute S311.

S314: when the selected cell is judged to meet the preset protocol rule, determining the selected cell as an initial cell meeting a first preset rule;

s315: acquiring UL-Interference parameter values of an initial cell;

s316: judging whether the UL-Interference parameter value is larger than-90 dBm;

s317: judging whether the preset database is non-empty and the cell signal intensity value of the initial cell is less than-100 dBm;

s318: storing the initial cell and the corresponding cell signal strength value into a preset database, and returning to execute S311;

s319: determining the initial cell as a target cell and residing;

it should be noted that, for S316, if the determination result is yes, S318 is executed; if the judgment result is negative, S317 is executed. For S317, if the judgment result is yes, S318 is executed; if the determination result is negative, S319 is executed.

S320: judging whether a preset database is empty or not;

s321: and selecting the cell with the maximum cell signal intensity value from the preset database as a target cell and residing.

It should be noted that, for S320, if the determination result is yes, the flow may be ended; if the determination result is negative, S321 may be performed, and then the flow ends.

That is, it is first necessary to empty the preset database, and then attempt to select a suitable initial cell according to the signal strength value and according to the 3GPP protocol requirements on each frequency band list based on each frequency band list in the full-band information, and if an initial cell is selected, then obtain the SIB7 message of the initial cell and view the UL-Interference parameter. Thus, if the UL-Interference parameter is greater than-90 dBm, the signal intensity of the initial cell and the corresponding cell can be stored in a preset database, and the next initial cell is continuously searched; if the UL-Interference parameter is not greater than-90 dBm, the cell signal strength value of the initial cell is less than-100 dBm, and the predetermined database is not empty, the initial cell and the corresponding cell signal strength value may be added to the predetermined database, and the search for the next initial cell may be continued. In this way, if the initial cell is not saved to the preset database, the initial cell can be selected as the target cell, and the cell selection process is ended.

It should be noted that, when all the frequency band lists in the full-band information covered by the mobile device are tried and no target cell is selected, it may be determined whether the preset database is empty at this time, and if the preset database is empty, the process of "performing cell selection according to the full-band information covered by the mobile device" is stopped, that is, the flow shown in fig. 3 is ended; otherwise, selecting the cell with the maximum cell signal intensity value from a preset database as the target cell, and ending the cell selection process.

Based on the same inventive concept of the foregoing embodiments, refer to fig. 4, which shows a schematic structural diagram of a cell selection apparatus according to an embodiment of the present application. As shown in fig. 4, the cell selection apparatus 40 may include a determination unit 401, an acquisition unit 402, a comparison unit 403, and a selection unit 404; wherein the content of the first and second substances,

a determining unit 401 configured to determine an initial cell that conforms to a first preset rule; the first preset rule is used for selecting a cell meeting preset conditions of a downlink channel;

an obtaining unit 402, configured to obtain an uplink interference parameter of the initial cell based on the determined initial cell;

a comparing unit 403, configured to determine whether the initial cell meets a second preset rule based on a comparison between the uplink interference parameter of the initial cell and a preset threshold; the second preset rule is used for selecting a cell meeting preset conditions of an uplink channel;

a selecting unit 404, configured to determine the initial cell as a target cell and perform camping when the initial cell meets a second preset rule.

In the foregoing solution, the selecting unit 404 is further configured to, when the initial cell does not conform to the second preset rule, return to the step of determining the initial cell conforming to the first preset rule until the initial cell conforms to the second preset rule, so as to select the target cell conforming to the second preset rule and perform camping on the target cell.

In the foregoing solution, the obtaining unit 402 is specifically configured to obtain, based on the determined initial cell, an SIB7 message of the initial cell; and obtaining the uplink interference parameters of the initial cell from the obtained SIB7 message.

In the foregoing scheme, the comparing unit 403 is specifically configured to compare the uplink interference parameter of the initial cell with a first preset threshold;

the determining unit 401 is further configured to determine that the initial cell does not conform to a second preset rule when the uplink interference parameter of the initial cell is greater than a first preset threshold; when the uplink interference parameter of the initial cell is smaller than or equal to a first preset threshold, if a preset database is not empty and the cell signal strength value of the initial cell is smaller than a preset strength threshold, determining that the initial cell does not conform to a second preset rule; and if the preset database is empty or the cell signal intensity value of the initial cell is greater than or equal to a preset intensity threshold value, determining that the initial cell conforms to a second preset rule.

In the foregoing solution, the comparing unit 403 is further configured to, when the uplink interference parameter of the initial cell is less than or equal to a first preset threshold, a preset database is non-empty, and the cell signal strength value of the initial cell is less than a preset strength threshold, store the initial cell and the corresponding cell signal strength value into the preset database, and return to the step of executing the step of determining the initial cell meeting the first preset rule.

In the above scheme, referring to fig. 4, the cell selection apparatus 40 may further include a determining unit 405; wherein the content of the first and second substances,

a comparing unit 403, configured to compare the uplink interference parameter of the initial cell with a second preset threshold when the initial cell is cell selection based on a pre-stored frequency point list; wherein the second preset threshold is greater than the first preset threshold; when the uplink interference parameter of the initial cell is larger than the second preset threshold, ignoring the initial cell, and returning to the step of determining the initial cell conforming to the first preset rule; when the uplink interference parameter of the initial cell is smaller than or equal to the second preset threshold and larger than the first preset threshold, storing the initial cell and the corresponding cell signal strength value into the preset database, and returning to the step of executing the step of determining the initial cell conforming to the first preset rule;

a determining unit 405, configured to determine whether the preset database is empty when all the frequency points in the frequency point list are subjected to cell selection and a target cell meeting a second preset rule is not selected;

the determining unit 401 is further configured to select a cell with the largest cell signal strength value from the preset database as a target cell and perform camping when the preset database is non-empty.

In the above solution, the comparing unit 403 is further configured to, when the initial cell is cell selection based on full band information, store the initial cell and the corresponding cell signal strength value into the preset database when the uplink interference parameter of the initial cell is greater than the first preset threshold, and return to the step of determining the initial cell meeting the first preset rule;

the determining unit 405 is further configured to determine whether the preset database is empty when all the frequency band lists in the full frequency band information are subjected to cell selection and a target cell meeting a second preset rule is not selected;

In the above scheme, referring to fig. 4, the cell selection apparatus 40 may further include a clearing unit 406 configured to clear the preset database.

In the above scheme, the determining unit 401 is further configured to determine a frequency point list stored in the mobile device; the frequency point list comprises at least one frequency point;

the obtaining unit 402 is further configured to measure each frequency point in the frequency point list, obtain a frequency point signal strength value corresponding to each frequency point, and sequence the obtained frequency point signal strength values;

the determining unit 405 is further configured to determine whether the frequency point list has unselected frequency points;

the selecting unit 404 is further configured to select a frequency point with the largest frequency point signal intensity value from the unselected frequency points as a frequency point to be tested if the unselected frequency points exist in the frequency point list;

the determining unit 401 is further configured to determine an initial cell meeting a first preset rule according to the cell measurement result of the frequency point to be tested.

In the above scheme, the determining unit 401 is further configured to determine full-band information covered by the mobile device; dividing the full-band information into a plurality of frequency band lists according to the determined full-band information and preset intervals; each frequency band list comprises at least one frequency point;

a determining unit 405, further configured to determine whether there is an unselected frequency band list in the plurality of frequency band lists;

a selecting unit 404, further configured to select a frequency band list to be tested from the unselected frequency band lists according to a preset frequency band sequence if the unselected frequency band lists exist in the plurality of frequency band lists;

the obtaining unit 402 is further configured to measure each frequency point in the to-be-tested frequency band list, to obtain a frequency point signal strength value corresponding to each frequency point, and to sequence the obtained frequency point signal strength values;

the determining unit 405 is further configured to determine whether the frequency band list to be tested has unselected frequency points;

the selecting unit 404 is further configured to select a frequency point with the largest frequency point signal intensity value from the unselected frequency points as a frequency point to be tested if the unselected frequency points exist in the to-be-tested frequency band list;

In the above scheme, the obtaining unit 402 is further configured to perform cell measurement on the frequency point to be tested, so as to obtain a cell measurement result; the cell measurement result comprises whether a cell exists in the frequency point to be tested and a corresponding cell signal intensity value;

the determining unit 405 is further configured to determine whether an unselected cell exists in the multiple cells when multiple cells exist in the frequency point to be tested;

a selecting unit 404, further configured to select a cell with the largest cell signal strength value from the unselected cells if there is an unselected cell in the plurality of cells;

the determining unit 405 is further configured to determine whether the selected cell meets a preset protocol rule;

the determining unit 401 is further configured to determine, when it is determined that the selected cell meets the preset protocol rule, the selected cell as an initial cell meeting a first preset rule; and when the selected cell is judged not to meet the preset protocol rule, continuously judging whether the unselected cells exist in the plurality of cells or not so as to determine the initial cell which meets the first preset rule.

It is understood that in this embodiment, a "unit" may be a part of a circuit, a part of a processor, a part of a program or software, etc., and may also be a module, or may also be non-modular. Moreover, each component in the embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.

Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Accordingly, the present embodiment provides a computer storage medium storing a cell selection program that when executed by at least one processor implements the steps of the method of any of the preceding embodiments.

Based on the above-mentioned components of the cell selection apparatus 40 and the computer storage medium, referring to fig. 5, a specific hardware structure example of the cell selection apparatus 40 provided in the embodiment of the present application is shown, which may include: a communication interface 501, a memory 502, and a processor 503; the various components are coupled together by a bus system 504. It is understood that the bus system 504 is used to enable communications among the components. The bus system 504 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 504 in fig. 5. The communication interface 501 is used for receiving and sending signals in the process of receiving and sending information with other external network elements;

a memory 502 for storing a computer program capable of running on the processor 503;

a processor 503 for executing, when running the computer program, the following:

It will be appreciated that the memory 502 in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a programmable Read-Only Memory (PROM), an Erasable programmable Read-Only Memory (EPROM), an Electrically Erasable programmable Read-Only Memory (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous chained SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 502 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

And the processor 503 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 503. The Processor 503 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 502, and the processor 503 reads the information in the memory 502 and completes the steps of the above method in combination with the hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, as another embodiment, the processor 503 is further configured to perform the steps of the method of any one of the preceding embodiments when running the computer program.

The mobile device in the embodiment of the present application may be a smart phone, a tablet computer, a palm computer, a notebook computer, a Personal Digital Assistant (PDA), a navigation device, or the like. Referring to fig. 6, a schematic diagram of a composition structure of a mobile device provided in an embodiment of the present application is shown. As shown in fig. 6, the mobile device 60 includes at least the cell selection apparatus 40 according to any of the previous embodiments.

Thus, after the mobile device 60 is powered on, the cell selection can be performed according to the cell selection device 40 built in the mobile device, which not only can avoid the problem that the cell with a poor uplink channel is selected due to only considering the downlink channel condition, but also can avoid the consequences of failure of registration, call service, data service, short message service and the like caused by abnormal uplink channel communication due to the simultaneous consideration of the uplink channel condition and the downlink channel condition, thereby improving the communication performance.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

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

2. The method of claim 1, wherein after the determining whether the initial cell complies with a second predetermined rule, the method further comprises:

and when the initial cell does not accord with a second preset rule, returning to the step of executing the step of determining the initial cell which accords with the first preset rule until the initial cell accords with the second preset rule so as to select a target cell which accords with the second preset rule and reside.

3. The method of claim 1, wherein the obtaining the uplink interference parameter of the initial cell based on the determined initial cell comprises:

acquiring a system information block SIB7 message of the initial cell based on the determined initial cell;

4. The method according to claim 1, wherein the determining whether the initial cell meets a second predetermined rule based on the comparison between the uplink interference parameter of the initial cell and a predetermined threshold includes:

5. The method of claim 4, wherein when the initial cell does not comply with a second preset rule, the method further comprises:

and when the uplink interference parameter of the initial cell is less than or equal to a first preset threshold, a preset database is not empty, and the cell signal intensity value of the initial cell is less than a preset intensity threshold, storing the initial cell and the corresponding cell signal intensity value into the preset database, and returning to the step of executing the step of determining the initial cell conforming to the first preset rule.

6. The method according to claim 5, wherein when the initial cell is cell selection based on a pre-stored frequency point list, the method further comprises:

comparing the uplink interference parameter of the initial cell with a second preset threshold; wherein the second preset threshold is greater than the first preset threshold;

when the uplink interference parameter of the initial cell is larger than the second preset threshold, ignoring the initial cell, and returning to the step of determining the initial cell conforming to the first preset rule;

when the uplink interference parameter of the initial cell is smaller than or equal to the second preset threshold and larger than the first preset threshold, storing the initial cell and the corresponding cell signal strength value into the preset database, and returning to the step of executing the step of determining the initial cell conforming to the first preset rule;

correspondingly, when all the frequency points in the frequency point list are subjected to cell selection and a target cell meeting a second preset rule is not selected, the method further comprises the following steps:

judging whether the preset database is empty or not;

7. The method of claim 5, wherein when the initial cell is cell selected based on full band information, the method further comprises:

when the uplink interference parameter of the initial cell is larger than the first preset threshold, storing the initial cell and the corresponding cell signal strength value into the preset database, and returning to the step of executing the step of determining the initial cell conforming to the first preset rule;

correspondingly, when all frequency band lists in the full-band information are subjected to cell selection and a target cell meeting a second preset rule is not selected, the method further comprises:

judging whether the preset database is empty or not;

8. The method according to any of claims 5 to 7, wherein before said determining the initial cell complying with the first preset rule, the method further comprises:

and emptying the preset database.

9. The method of claim 1, wherein the determining the initial cell according to the first preset rule comprises:

judging whether the frequency point list has unselected frequency points;

10. The method of claim 1, wherein the determining the initial cell according to the first preset rule comprises:

determining full-band information covered by the mobile device;

11. The method according to claim 9 or 10, wherein the determining an initial cell according to a first preset rule according to the cell measurement result of the frequency point to be tested comprises:

12. A cell selection apparatus, comprising a determination unit, an acquisition unit, a comparison unit, and a selection unit; wherein the content of the first and second substances,

13. A cell selection apparatus, comprising a memory and a processor; wherein the content of the first and second substances,

the memory for storing a computer program operable on the processor;

the processor, when running the computer program, is configured to perform the method of any of claims 1 to 11.

14. A computer storage medium storing a cell selection program that when executed by at least one processor implements the method of any one of claims 1 to 11.

15. A mobile device, characterized in that it comprises at least a cell selection apparatus according to claim 12 or 13.