CN111436088B

CN111436088B - Cell reselection method, base station, user terminal and storage medium

Info

Publication number: CN111436088B
Application number: CN201910105362.XA
Authority: CN
Inventors: 鲍炜; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2022-09-27
Anticipated expiration: 2039-02-01
Also published as: CN111436088A

Abstract

The invention discloses a cell reselection method, a base station, a user terminal and a storage medium, and relates to the technical field of communication. The method comprises the following steps: the base station broadcasts configuration parameters of adjacent cells of the subordinate cells through the subordinate cells, wherein the configuration parameters of each adjacent cell comprise cell identifiers of the adjacent cells and PLMN identifier sets of the adjacent cells; the user terminal obtains the configuration parameters of the neighbor cells of the resident cell from the resident cell, and determines the candidate cell for cell reselection according to the configuration parameters of the neighbor cells. The technical scheme of the embodiment of the invention can solve the problem of low cell reselection efficiency.

Description

Cell reselection method, base station, user terminal and storage medium

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a cell reselection method, a base station, a user terminal and a storage medium.

Background

Currently, radio spectrum resources are allocated uniformly by the country. The wireless spectrum resource comprises a spectrum of a licensed frequency band and a spectrum of an unlicensed frequency band. The spectrum of the licensed band is pre-allocated for use by a particular operator. The spectrum of the unlicensed frequency band does not need to be allocated, and all organizations and individuals can use the spectrum, so that the spectrum is a shared spectrum resource.

The user terminal generally has strong mobility. As the user terminal moves, the signal quality of the cell in which the user terminal currently resides may deteriorate, resulting in the cell selection criterion not being satisfied. The user terminal needs to perform cell reselection.

In the unlicensed frequency band, cells corresponding to different Public Land Mobile Networks (PLMNs) may exist on one frequency point. When the ue attempts to reselect to a reselection target cell whose signal quality meets the reselection requirement from the camped cell, the ue needs to read a system message of the reselection target cell to determine whether a PLMN supported by the reselection target cell matches a PLMN selectable by the ue. If not, i.e. the target cell does not support the PLMN selectable by the user equipment, the user equipment needs to determine to reselect the target cell again. Therefore, the cell reselection efficiency is low and the time delay is large.

Disclosure of Invention

The embodiment of the invention provides a cell reselection method, a base station, a user terminal and a storage medium, which aim to solve the problem of low cell reselection efficiency.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a cell reselection method, which is applied to a base station, and the method includes: and broadcasting configuration parameters of adjacent cells of the subordinate cells by the subordinate cells, wherein the configuration parameters of each adjacent cell comprise cell identifiers of the adjacent cells and Public Land Mobile Network (PLMN) identifier sets of the adjacent cells.

In a second aspect, an embodiment of the present invention provides a cell reselection method, which is applied to a user equipment, and the method includes: acquiring configuration parameters of neighbor cells of the resident cells from the resident cells, wherein the configuration parameters of each neighbor cell comprise cell identifiers of the neighbor cells and Public Land Mobile Network (PLMN) identifier sets of the neighbor cells, and the resident cells are the cells where the user terminal currently resides; and determining the alternative cell for cell reselection according to the configuration parameters of the adjacent cell.

In a third aspect, an embodiment of the present invention provides a cell reselection method, where the cell reselection method is applied to a base station, and the method includes: the cell reselection reference information is broadcasted by the subordinate cell, the cell reselection reference information comprises a cell identifier of a matching adjacent cell or a cell identifier of a non-matching adjacent cell, the matching adjacent cell comprises an adjacent cell of the subordinate cell with a Public Land Mobile Network (PLMN) identifier matched with the PLMN identifier of the subordinate cell, and the non-matching adjacent cell comprises an adjacent cell of the subordinate cell with a PLMN identifier not matched with the PLMN identifier of the subordinate cell.

In a fourth aspect, an embodiment of the present invention provides a cell reselection method, where the cell reselection method is applied to a user equipment, and the method includes: acquiring cell reselection reference information of a resident cell, wherein the resident cell is a cell in which a user terminal currently resides, the cell reselection reference information comprises a cell identifier of a matched adjacent cell or a cell identifier of an unmatched adjacent cell, the matched adjacent cell comprises an adjacent cell of the resident cell in which a Public Land Mobile Network (PLMN) identifier is matched with the PLMN identifier of the resident cell, and the unmatched adjacent cell comprises an adjacent cell of the resident cell in which the PLMN identifier is not matched with the PLMN identifier of the resident cell; and determining an alternative cell for cell reselection according to the cell reselection reference information.

In a fifth aspect, an embodiment of the present invention provides a base station, including: the broadcast module is used for broadcasting configuration parameters of adjacent cells of the subordinate cells through the subordinate cells, and the configuration parameters of each adjacent cell comprise cell identifiers of the adjacent cells and Public Land Mobile Network (PLMN) identifier sets of the adjacent cells.

In a sixth aspect, an embodiment of the present invention provides a user terminal, including: an obtaining module, configured to obtain configuration parameters of neighboring cells of a camped cell from the camped cell, where the configuration parameters of each neighboring cell include a cell identifier of the neighboring cell and a public land mobile network PLMN identifier set of the neighboring cell, and the camped cell is a cell in which a user terminal currently camped; and the processing module is used for determining the candidate cell for cell reselection according to the configuration parameters of the adjacent cell.

In a seventh aspect, an embodiment of the present invention provides a base station, including: the broadcasting module is used for broadcasting cell reselection reference information through the subordinated cell, the cell reselection reference information comprises cell identifiers of matched adjacent cells or cell identifiers of non-matched adjacent cells, the matched adjacent cells comprise adjacent cells of the subordinated cell with public land mobile network PLMN identifiers matched with the PLMN identifiers of the subordinated cell, and the non-matched adjacent cells comprise adjacent cells of the subordinated cell with the PLMN identifiers not matched with the PLMN identifiers of the subordinated cell.

In an eighth aspect, an embodiment of the present invention provides a user equipment, including an obtaining module, configured to obtain cell reselection reference information of a residential cell, where the residential cell is a cell where the user equipment currently resides, the cell reselection reference information includes a cell identifier of a matching neighboring cell or a cell identifier of a non-matching neighboring cell, the matching neighboring cell includes a neighboring cell of the residential cell where a public land mobile network PLMN identifier matches a PLMN identifier of the residential cell, and the non-matching neighboring cell includes a neighboring cell of the residential cell where the PLMN identifier does not match the PLMN identifier of the residential cell; and the processing module is used for determining the candidate cell for cell reselection according to the cell reselection reference information.

In a ninth aspect, an embodiment of the present invention provides a base station, which includes a processor, a memory, and a computer program stored on the memory and being executable on the processor, and when executed by the processor, the computer program implements the steps of the cell reselection method in the first aspect or the steps of the cell reselection method in the third aspect.

In a tenth aspect, an embodiment of the present invention provides a user equipment, which includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and when the computer program is executed by the processor, the steps of the cell reselection method in the second aspect or the steps of the cell reselection method in the fourth aspect are implemented.

In an eleventh aspect, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the cell reselection method in the first aspect, the steps of the cell reselection method in the second aspect, the steps of the cell reselection method in the third aspect, or the steps of the cell reselection method in the fourth aspect.

In the embodiment of the invention, the base station broadcasts the configuration parameters of the adjacent cells including the cell identifiers of the adjacent cells of the cell under jurisdiction and the PLMN identifier set through the cell under jurisdiction, so that the user terminal can obtain the configuration parameters from the resident cell and determine the alternative cells for reselecting the cell according to the configuration parameters. Or, the base station broadcasts the cell identifier of the matched neighboring cell or the cell identifier of the non-matched neighboring cell, so that the user terminal can determine the candidate cell for cell reselection according to the cell identifier of the matched neighboring cell or the cell identifier of the non-matched neighboring cell. Therefore, the user terminal does not need to read the system information broadcasted by the adjacent cell for many times, the situation that the user terminal can not know the PLMN identification before reading the system information broadcasted by the adjacent cell and can reselect the target cell for many times under the condition of an unauthorized frequency band is avoided, and the cell reselection efficiency is improved.

Drawings

The present invention will be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features.

Fig. 1 is a flowchart of a cell reselection method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating another cell reselection method according to an embodiment of the present invention;

fig. 3 is a flowchart of a cell reselection method according to another embodiment of the present invention;

fig. 4 is a flowchart of another cell reselection method according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a ue according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another base station according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another ue according to an embodiment of the present invention;

fig. 9 is a schematic hardware structure diagram of a base station implementing the above embodiments;

fig. 10 is a schematic diagram of a hardware structure of a user terminal implementing the above embodiment.

Detailed Description

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

The embodiment of the invention provides a cell reselection method, a base station, a user terminal and a storage medium. The method can be used between a base station corresponding to a certain cell and a User Equipment (UE) connected with the cell. In the embodiment of the present invention, the base station may be a base station in a Long Term Evolution (LTE) communication system, and may also be a base station in a 5G communication system, which is not limited herein. The user terminal may be a mobile phone, a tablet computer, a computer, and the like, but is not limited thereto. In the embodiment of the present invention, in the process of data interaction between the base station and the user terminal, matching between a Public Land Mobile Network (PLMN) identifier of the neighboring cell and a PLMN identifier of the user terminal may be achieved, or matching between a PLMN representation of the neighboring cell and a PLMN identifier of a cell where the user terminal resides may be achieved. And therefore, the user terminal determines an alternative cell for cell reselection in the adjacent cells with the matched PLMN identifications.

Fig. 1 is a flowchart of a cell reselection method according to an embodiment of the present invention. The cell reselection method is applicable to a base station. As shown in fig. 1, the cell reselection method may include step S101.

In step S101, a configuration parameter of a neighboring cell of the subordinate cell is broadcast by the subordinate cell.

A cell formed by signal coverage of a base station is a cell under the jurisdiction of the base station, and one base station may possibly control a plurality of cells. And the cell adjacent to the cell under the jurisdiction is the adjacent cell of the cell under the jurisdiction. One jurisdictional cell may have one or more neighbor cells. The configuration message of each neighboring cell includes a cell identity of the neighboring cell and a PLMN identity set of the neighboring cell. And the base station broadcasts the configuration parameters of one or more adjacent cells of each cell under the jurisdiction through each cell under the jurisdiction.

The cell identifier is used for identifying a cell. Different cells have different cell identities. In some examples, the Cell identity includes a Cell operating frequency point and a Physical Cell Identity (PCI). For example, the cell operating frequency point may specifically be a frequency point at which a cell transmits a Synchronization Signal Block (SSB).

The set of PLMN identities comprises at least one PLMN identity. The form of the PLMN identity set is not limited herein, and may be, for example, a PLMN identity list (i.e., PLMN ID list), a PLMN identity array, a PLMN queue, or the like.

The base stations can mutually transmit PLMN information through interfaces, so that the base stations can acquire configuration information of adjacent cells of cells under the jurisdiction. And reading the PLMN information of the adjacent cell of the cell under the jurisdiction by a user terminal connected to the cell under the jurisdiction through configuration, and reporting the PLMN information to the base station of the cell under the jurisdiction, so that the base station can obtain the configuration parameters of the adjacent cell of the cell under the jurisdiction. The PLMN information of the neighboring cell can also be obtained by a manual drive test method, and configured to the base station by Operation Administration and Maintenance (OAM), so that the base station obtains configuration parameters of the neighboring cell of the cell under jurisdiction. The specific manner in which the base station acquires the configuration parameters of the neighboring cells of the cell under the jurisdiction is not limited herein.

In the embodiment of the invention, the base station broadcasts the configuration parameters of the adjacent cells of the subordinate cell through the subordinate cell, so that the user terminal can acquire the configuration parameters of the adjacent cell. The configuration parameters of each neighboring cell include the cell identifier of the neighboring cell and the PLMN identifier set of the neighboring cell. The user terminal can acquire the PLMN identification of the adjacent cell without reading the system information broadcasted by the adjacent cell. The method and the device avoid the determination of the candidate cell for cell reselection for many times, which is possible to be performed by the user terminal due to the fact that the user terminal cannot know the PLMN identification before reading the system information broadcasted by the adjacent cell under the condition of an unauthorized frequency band, thereby improving the cell reselection efficiency. Moreover, the time delay of the user terminal cell reselection can be reduced.

Fig. 2 is a flowchart illustrating another cell reselection method according to an embodiment of the present invention. The cell reselection method is applicable to a user terminal. As shown in fig. 2, the cell reselection method may include steps S201 and S202.

In step S201, configuration parameters of neighboring cells of the camped cell are acquired from the camped cell.

The user terminal may need to select a suitable camping cell through cell reselection during moving, i.e. change the camping cell. The resident cell in this embodiment is a cell where the user terminal currently resides. At the current moment, the user terminal can receive the information broadcasted by the resident cell.

The ue may obtain configuration parameters of neighboring cells of the camping cell from System Information (i.e., System Information) broadcasted by the camping cell. I.e. the system message includes configuration parameters of the neighbor cells of the camping cell. The configuration parameters of the neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell. The set of PLMN identities comprises at least one PLMN identity.

In some examples, the cell identity includes a cell operating frequency point and a physical cell identity.

In some examples, the set of PLMN identifications is a list of PLMN identifications.

For the relevant description of the configuration parameters, the PLMN identity set and other contents of the neighboring cell in step S201, reference may be made to the relevant contents in the above embodiments, which is not described herein again.

It should be noted that the ue in the embodiment of the present invention is in an IDLE state (i.e., IDLE state) or an Inactive state (i.e., Inactive state).

In step S202, an alternative cell for cell reselection is determined according to the configuration parameters of the neighboring cells.

The PLMN identity set of the neighboring cell matches the PLMN identity of the user terminal, so that the user terminal can only camp on the neighboring cell and obtain normal services. The configuration parameters of the neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell. Specifically, the user terminal may perform matching between the PLMN identity set of the neighboring cell and the PLMN identity of the user terminal, and determine the candidate cell for cell reselection based on the cell identity of the neighboring cell.

Specifically, the user terminal determines the candidate cell for cell reselection, and then the user terminal may select a neighboring cell from the candidate cells for cell reselection to camp on (i.e., camp on). It should be noted that a suitable cell (i.e., a capable cell) may be determined among the candidate cells for cell reselection. The suitable cell is the cell where the ue can camp and obtain normal service. Besides the PLMN identity set needs to be matched with the PLMN identity of the user equipment, the suitable cell needs to meet the cell selection criterion (R criterion) in protocols such as 3GPP TS36.304 or 3GPP TS 38.304 in the communication protocol, the suitable cell is not barred from camping (i.e. the cell is not barred), and the Tracking Area (TA) broadcasted by the suitable cell does not belong to the barred Tracking Area (i.e. list of Forbidden Tracking Areas).

In the embodiment of the invention, the user terminal acquires the configuration parameters of the neighbor cells of the resident cell from the resident cell. And determining the alternative cell for cell reselection according to the configuration parameters of the adjacent cell. The user terminal can acquire the PLMN identification of the adjacent cell without reading the system information broadcasted by the adjacent cell. The method and the device avoid the determination of the candidate cell for cell reselection for many times, which is possible to be performed by the user terminal due to the fact that the user terminal cannot know the PLMN identification before reading the system information broadcasted by the adjacent cell under the condition of an unauthorized frequency band, thereby improving the cell reselection efficiency. Moreover, the time delay of the user terminal cell reselection can be reduced.

In some examples, at least one PLMN identity in the PLMN identity set of the candidate cells for cell reselection in the above embodiments is the same as the PLMN identity of the user terminal. That is, at least one neighboring cell in the PLMN identity set whose PLMN identity is the same as the PLMN identity of the user terminal may be used as a candidate cell for cell reselection. Specifically, the PLMN identity of the user terminal may include an identity of a PLMN selected by the user terminal, an identity of a PLMN registered by the user terminal, and/or a PLMN identity in an equivalent PLMN set of the user terminal.

For example, at least one PLMN identity in the PLMN identity set of the candidate cell for cell reselection is the same as the identity of the PLMN (Selected PLMN) Selected by the user terminal. The Access Stratum (AS) of the user terminal may report the acquired relevant information of the PLMN to the NAS autonomously or based on a received Non-Access Stratum (NAS) instruction. The user terminal searches the cell with the strongest signal quality and confirms the cell with the strongest signal quality. And the user terminal reports the one or more PLMN identifications read from the cell with the strongest signal quality to the NAS. And the identifier of the PLMN selected by the NAS is the identifier of the PLMN selected by the user terminal.

For another example, at least one PLMN id in the PLMN id set of the candidate cell for cell reselection is the same as an id of a PLMN (Registered PLMN) Registered by the user equipment. The identifier of the PLMN registered by the user terminal is the identifier of the PLMN registered by the user terminal before the user terminal is turned off or detached from the network last time.

For example, at least one PLMN id in the PLMN id set of the candidate cell for cell reselection is the same as any PLMN id in the Equivalent PLMN (i.e., Equivalent PLMN) set of the user terminal. The equivalent PLMN set of the user terminal is a PLMN set which is equivalent to the PLMN currently selected by the user terminal. Specifically, the Equivalent PLMN set may be an Equivalent PLMN list (i.e., Equivalent PLMN list).

In some examples, the network may pre-configure the priority of the cell operating frequency points. In the process of cell reselection, the alternative cells reselected by the cells corresponding to the cell working frequency points can be sequentially selected for cell reselection according to the sequence of the priorities of the preconfigured cell working frequency points from high to low until the cell reselection is successful.

There may be a plurality of candidate cells for cell reselection, and the cell identifier in the configuration message of the candidate cell for cell reselection includes a cell operating frequency point. The cell operating frequency points of the candidate cells for the reselection of the plurality of cells may be different. For example, there are four candidate cells for cell reselection, which are neighboring cells X1, X2, X3, and X4. The cell working frequency points of the four adjacent cells are three, namely cell working frequency points F1, F2 and F3. The cell working frequency point of the adjacent cells X1 and X2 is F1, the cell working frequency point of the adjacent cell X3 is F2, and the cell working frequency point of the adjacent cell X4 is F3. And the priority of the pre-configured cell working frequency points is respectively F1, F2 and F3 from high to low. Therefore, in the process of cell reselection, cell reselection evaluation is performed on the neighboring cells X1 and X2. If no suitable cell is obtained in the adjacent cells X1 and X2, the cell reselection evaluation is performed on the adjacent cell X3. If the neighboring cell X3 is not a suitable cell, the cell reselection evaluation is performed again for the neighboring cell X4.

The embodiment of the invention also provides a cell reselection method, which can be applied to a system comprising a base station and a user terminal. The cell reselection method includes step S101, step S201, and step S202 in the above embodiments. For the related contents of step S101, step S201, and step S202 and the technical effect generated by the method for reselecting the cell, reference may be made to the related description in the foregoing embodiments, and details are not repeated here. Note that the subordinate cell in step S101 corresponds to the camping cell in step S201 and step S202.

Fig. 3 is a flowchart of a cell reselection method according to another embodiment of the present invention. The cell reselection method is applicable to a base station. As shown in fig. 3, the cell reselection method may include step S301.

In step S301, cell reselection reference information is broadcasted by a subordinate cell.

The cell reselection reference information comprises cell identifications of matched neighbor cells or cell identifications of non-matched neighbor cells. In particular, the cell identities of matching neighbor cells may be presented in the form of information items in a list. The matched adjacent cell comprises an adjacent cell of the subordinate cell, wherein the PLMN identification of the adjacent cell is matched with the PLMN identification of the subordinate cell. That is, the PLMN identity of the matching neighboring cell matches the PLMN identity of the subordinate cell. The cell identities of non-matching neighbor cells may be presented in the form of information items in a list. The non-matching adjacent cells comprise adjacent cells of the subordinate cells, wherein PLMN identifications of the adjacent cells are not matched with PLMN identifications of the subordinate cells. That is, the PLMN identity of the non-matching neighbor cell does not match the PLMN identity of the subordinate cell.

It should be noted that the neighboring cells of the subordinate cell include matching neighboring cells of the subordinate cell, but all neighboring cells of the subordinate cell are not necessarily matching neighboring cells of the subordinate cell. In the embodiment of the invention, if the cell reselection reference information comprises the cell identifier of the matched adjacent cell, the base station only broadcasts the cell identifier of the matched adjacent cell of the subordinate cell through the subordinate cell.

Similarly, the neighboring cells of the subordinate cell include non-matching neighboring cells of the subordinate cell, but the neighboring cells of the subordinate cell are not necessarily all non-matching neighboring cells of the subordinate cell. In the embodiment of the invention, if the cell reselection reference information comprises the cell identifier of the non-matching adjacent cell, the base station only broadcasts the cell identifier of the non-matching adjacent cell of the cell under jurisdiction.

The content related to step S101 in step S301 in the above embodiment can refer to the related description in step S101 in the above embodiment, and is not repeated herein.

In the embodiment of the invention, the base station broadcasts the cell reselection reference information of the subordinate cell through the subordinate cell, and the cell reselection reference information comprises the cell identification of the matched adjacent cell or the cell identification of the non-matched adjacent cell. The matched adjacent cell comprises an adjacent cell of the subordinate cell, wherein the PLMN identification of the adjacent cell is matched with the PLMN identification of the subordinate cell. The non-matching adjacent cells comprise adjacent cells of the subordinate cells, wherein the PLMN identifications of the adjacent cells are not matched with the PLMN identifications of the subordinate cells. Therefore, the user terminal can acquire the message of the matched adjacent cell or the message of the non-matched adjacent cell. The ue can directly obtain candidate cells for cell reselection (i.e. candidate (s)) or obtain cells to be avoided, without reading the system information broadcast by neighboring cells for many times. The method and the device avoid the determination of the candidate cell for cell reselection for many times, which is possible to be performed by the user terminal due to the fact that the user terminal cannot know the PLMN identification before reading the system information broadcasted by the adjacent cell under the condition of an unauthorized frequency band, thereby improving the cell reselection efficiency. Moreover, the time delay of the user terminal cell reselection can be reduced.

In some embodiments, at least one PLMN identifier in the PLMN identifier set broadcasted by the matching neighboring cell in the above embodiments is the same as at least one PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell.

Each cell has its own broadcast, and the content broadcast by different cells may be different. And if at least one PLMN identification in the PLMN identification set broadcasted by the adjacent cell of the subordinated cell is the same as at least one PLMN identification in the PLMN identification set broadcasted by the subordinated cell, the adjacent cell of the subordinated cell is a matched adjacent cell of the subordinated cell.

The relationship between the PLMN identity set broadcasted by the matching neighboring cell and the PLMN identity set broadcasted by the subordinate cell may be specifically detailed in the following cases, but is not limited to the following cases.

In the first case, the PLMN identity set broadcasted by the matching neighboring cell is the same as the PLMN identity set broadcasted by the subordinate cell.

That is, if the PLMN identity set broadcasted by the neighboring cell is the same as the PLMN identity set broadcasted by the subordinate cell, the neighboring cell is a matching neighboring cell of the subordinate cell.

It should be noted that, matching the PLMN identifier set broadcasted by the neighboring cell is the same as the PLMN identifier set broadcasted by the subordinate cell, which means that the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, and the arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell is the same as the arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

In the second case, the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

That is to say, if the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, but the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is the matching neighboring cell of the subordinate cell.

And in the third situation, the PLMN identifications sorted as the first one in the PLMN identification set broadcasted by the matched adjacent cell are the same as the PLMN identifications sorted as the first one in the PLMN identification set broadcasted by the subordinate cell.

That is to say, if the PLMN identifier ordered as the first item in the PLMN identifier set broadcasted by the neighboring cell is the same as the PLMN identifier ordered as the first item in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is a matching neighboring cell of the subordinate cell.

In other embodiments, the relationship between the PLMN identity set broadcasted by the non-matching neighboring cell and the PLMN identity set broadcasted by the subordinate cell may be specifically detailed in the following cases, but is not limited to the following cases.

In the first case, at least one PLMN identifier in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from all PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

That is, if at least one PLMN identifier in the PLMN identifier set broadcasted by the neighboring cell is different from all PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is a non-matching neighboring cell of the subordinate cell.

In the second case, at least one PLMN identifier in the PLMN identifier set broadcasted by the jurisdictional cell is different from all PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell.

That is to say, if at least one PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell is different from all PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell, the neighboring cell is a non-matching neighboring cell of the subordinate cell.

In the third case, any PLMN identifier in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from any PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell.

That is to say, if the PLMN identifier in the PLMN identifier set broadcasted by the neighboring cell is completely different from the PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is a non-matching neighboring cell of the subordinate cell.

In a fourth case, the PLMN identity of the first PLMN identity in the set of PLMN identities broadcasted by the non-matching neighboring cell is different from the PLMN identity of the first PLMN identity in the set of PLMN identities broadcasted by the subordinate cell.

That is to say, if the PLMN identifier sorted as the first item in the PLMN identifier set broadcasted by the neighboring cell is different from the PLMN identifier sorted as the first item in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is a non-matching neighboring cell of the subordinate cell.

In a fifth case, the PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

That is to say, if the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, but the arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the neighboring cell is different from the arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, the neighboring cell is a non-matching cell of the subordinate cell.

Wherein, the PLMN identification set comprises at least one PLMN identification.

In some examples, the PLMN identity set in the foregoing embodiments may be specifically a PLMN identity list, but is not limited to the PLMN identity list.

Fig. 4 is a flowchart of another cell reselection method according to another embodiment of the present invention. The cell reselection method is applicable to a user terminal. As shown in fig. 4, the cell reselection method may include steps S401 and S402.

In step S401, cell reselection reference information of the camped cell is acquired.

The resident cell is a cell where the user terminal currently resides. The cell reselection reference information includes a cell identity of a matching neighbor cell or a cell identity of a non-matching neighbor cell. The matched adjacent cells comprise the adjacent cells of the resident cells of which the PLMN identifications are matched with the PLMN identifications of the resident cells. The non-matching neighbor cells comprise neighbor cells of the resident cell of which the PLMN identification is not matched with the PLMN identification of the resident cell.

The contents related to the above embodiment in step S401 may refer to the related descriptions in the above embodiment, and are not described herein again.

In step S402, an alternative cell for cell reselection is determined according to the cell reselection reference information.

If the cell reselection reference information comprises the cell identification of the matched adjacent cell. The matching neighbor cell can be selected as a candidate cell for cell reselection according to the cell identifier of the matching neighbor cell.

And if the cell reselection reference information comprises the cell identification of the non-matching neighbor cell. And selecting the neighbor cell except the matched neighbor cell as the candidate cell for cell reselection according to the cell identifier of the non-matched neighbor cell.

It should be noted that the ue in the embodiment of the present invention is in an idle state or an inactive state.

In the embodiment of the present invention, the user terminal may obtain the cell reselection reference information, where the cell reselection reference information includes a cell identifier of a matching neighboring cell or a cell identifier of a non-matching neighboring cell. The PLNM identity of the matched adjacent cell is matched with the PLMN identity of the resident cell. The PLMN identity of the non-matching neighbor cell does not match the PLMN identity of the camped cell. The user terminal can directly obtain the alternative cell for cell reselection or obtain the cell to be avoided without reading the system information broadcasted by the adjacent cell for many times. The method and the device avoid the determination of the alternative cell for cell reselection for multiple times, which is possible to be performed by the user terminal because the user terminal cannot know the PLMN identification before reading the system information broadcasted by the adjacent cell under the condition of an unauthorized frequency band, thereby improving the cell reselection efficiency. Moreover, the time delay of the user terminal cell reselection can be reduced.

In some embodiments, at least one PLMN identifier in the PLMN identifier set broadcasted by the matching neighboring cell in the above embodiments is the same as at least one PLMN identifier in the PLMN identifier set broadcasted by the camped cell.

The relationship between the PLMN identity set broadcasted by the matching neighboring cell and the PLMN identity set broadcasted by the camping cell may be specifically detailed in the following cases, but is not limited to the following cases.

In the first case, the PLMN identity set broadcasted by the matching neighbor cell is the same as the PLMN identity set broadcasted by the camped cell.

In the second case, the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell.

In a third case, the PLMN identifier ordered as the first item in the PLMN identifier set broadcasted by the matching neighboring cell is the same as the PLMN identifier ordered as the first item in the PLMN identifier set broadcasted by the camped cell.

In other embodiments, the relationship between the PLMN identity set broadcasted by the non-matching neighbor cell and the PLMN identity set broadcasted by the camped cell may be specifically detailed in the following cases, but is not limited to the following cases.

In the first case, at least one PLMN identity in the set of PLMN identities broadcasted by the non-matching neighbor cell is different from all PLMN identities in the set of PLMN identities broadcasted by the camped cell.

In the second case, at least one PLMN identity in the set of PLMN identities broadcasted by the camped cell is different from all PLMN identities in the set of PLMN identities broadcasted by the non-matching neighbor cell.

In a third case, any PLMN identifier in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from any PLMN identifier in the PLMN identifier set broadcasted by the camped cell.

In a fourth case, the first PLMN identity in the PLMN identity set broadcasted by the non-matching neighboring cell is different from the first PLMN identity in the PLMN identity set broadcasted by the camped cell.

In a fifth case, the PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell.

In some examples, the set of PLMN identifications may specifically be a list of PLMN identifications, but is not limited to a list of PLMN identifications.

For the relevant content of the relationship between the PLMN identifier set broadcasted by the matching neighboring cell and the PLMN identifier set broadcasted by the residential cell, reference may be made to the relevant description of the relationship between the PLMN identifier set broadcasted by the neighboring cell and the PLMN identifier set broadcasted by the subordinate cell in the foregoing embodiment, which is not described herein again.

In some examples, the network may pre-configure the priority of the cell operating frequency points. In the process of cell reselection, matching adjacent cells corresponding to the cell working frequency points can be selected in sequence according to the sequence of the priorities of the preconfigured cell working frequency points from high to low, and cell reselection is performed until the cell reselection is successful. Or, according to the sequence of the priorities of the preset configured cell working frequency points from high to low, the neighboring cells corresponding to the cell working frequency points except the neighboring cell except the matching neighboring cell are sequentially selected for cell reselection until the cell reselection is successful.

For example, in the cell reselection process, according to the sequence from high to low of the priority of the preconfigured cell working frequency points, the matching neighboring cells corresponding to the cell working frequency points are sequentially selected to perform the content of cell reselection, and in the cell reselection process, according to the sequence from high to low of the priority of the preconfigured cell working frequency points, the neighboring cells except the matching neighboring cells corresponding to the cell working frequency points are sequentially selected to perform the content of cell reselection, which may be referred to the relevant description in the above embodiment, and is not described herein again.

The embodiment of the invention also provides a cell reselection method, which can be applied to a system comprising a base station and a user terminal. The method for cell reselection includes step S301, step S401, and step S402 in the above embodiments. For the relevant content of step S301, step S401 and step S402 and the technical effect generated by the method for reselecting the cell, reference may be made to the relevant description in the above embodiments, and details are not repeated herein. Note that the subordinate cell in step S301 in the above embodiment corresponds to the camping cell in step S401 and step S402.

Fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in fig. 5, the base station 500 may include a broadcast module 501.

A broadcasting module 501, configured to broadcast configuration parameters of neighboring cells of a subordinate cell through the subordinate cell.

The configuration parameters of each neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell. The set of PLMN identifications includes at least one PLMN identification.

The base station provided in the embodiment of the present invention can implement each process implemented by the base station in the cell reselection method embodiment of fig. 1, and is not described herein again to avoid repetition.

Fig. 6 is a schematic structural diagram of a ue according to an embodiment of the present invention. As shown in fig. 6, the user terminal 600 may include an obtaining module 601 and a processing module 602.

An obtaining module 601, configured to obtain configuration parameters of neighboring cells of the camped cell from the camped cell.

The configuration parameters of each neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell. The set of PLMN identifications includes at least one PLMN identification. The resident cell is a cell where the user terminal currently resides.

A processing module 602, configured to determine an alternative cell for cell reselection according to the configuration parameter of the neighboring cell.

In some examples, at least one PLMN identity in the set of PLMN identities of the candidate cell for cell reselection is the same as the PLMN identity of the user terminal.

Specifically, the PLMN identity of the user terminal includes an identity of a PLMN selected by the user terminal, an identity of a PLMN registered by the user terminal, and/or a PLMN identity in an equivalent PLMN set of the user terminal.

In some examples, the processing module 602 may be specifically configured to sequentially select, according to an order from high to low of priorities of preconfigured cell operating frequency points, a neighboring cell, where a PLMN identity set corresponding to the cell operating frequency point matches a PLMN identity of the user terminal, as the candidate cell for cell reselection.

Further, the PLMN identity set is a PLMN identity list.

In some examples, the user terminal is in an idle state or an inactive state.

The user terminal provided in the embodiment of the present invention can implement each process implemented by the user terminal in the cell reselection method embodiment of fig. 2, and is not described herein again in order to avoid repetition.

Fig. 7 is a schematic structural diagram of a base station according to another embodiment of the present invention. As shown in fig. 7, the base station 700 may include a broadcast module 701.

The broadcasting module 701 is configured to broadcast cell reselection reference information through a subordinate cell, where the cell reselection reference information includes a cell identifier of a matching neighboring cell or a cell identifier of a non-matching neighboring cell, the matching neighboring cell includes a neighboring cell of the subordinate cell whose PLMN identifier matches a PLMN identifier of the subordinate cell, and the non-matching neighboring cell includes a neighboring cell of the subordinate cell whose PLMN identifier does not match the PLMN identifier of the subordinate cell.

In some embodiments, at least one PLMN identifier in the PLMN identifier set broadcasted by the matching neighboring cell is the same as at least one PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell.

In some examples, the set of PLMN identities broadcast by the matching neighbor cells is the same as the set of PLMN identities broadcast by the jurisdictional cells.

In other examples, the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

In still other examples, the PLMN identifier ranked as the first in the PLMN identifier set broadcasted by the matching neighboring cell is the same as the PLMN identifier ranked as the first in the PLMN identifier set broadcasted by the subordinate cell.

In some examples in further embodiments, at least one PLMN identity in the set of PLMN identities broadcasted by the non-matching neighbor cell is different from all PLMN identities in the set of PLMN identities broadcasted by the jurisdictional cell.

In some examples of further embodiments, at least one PLMN identifier in the set of PLMN identifiers broadcast by the subordinate cell is different from all PLMN identifiers in the set of PLMN identifiers broadcast by the non-matching neighboring cell.

In some examples of yet other embodiments, any one PLMN identifier in the set of PLMN identifiers broadcast by the non-matching neighboring cell is different from any one PLMN identifier in the set of PLMN identifiers broadcast by the subordinate cell.

In some further examples, the first PLMN identity in the set of PLMN identities broadcasted by the non-matching neighboring cell is different from the first PLMN identity in the set of PLMN identities broadcasted by the subordinate cell.

In some further examples in other embodiments, a PLMN identifier in the PLMN identifier set broadcasted by the non-matching neighboring cell is the same as a PLMN identifier in the PLMN identifier set broadcasted by the subordinate cell, and an order of ranking PLMN identifiers in the PLMN identifier set broadcasted by the non-matching neighboring cell is different from an order of ranking PLMN identifiers in the PLMN identifier set broadcasted by the subordinate cell.

Wherein, the PLMN identity set includes at least one PLMN identity.

Further, the PLMN identity set is a PLMN identity list.

The base station provided in the embodiment of the present invention can implement each process implemented by the base station in the cell reselection method embodiment of fig. 3, and is not described herein again to avoid repetition.

Fig. 8 is a schematic structural diagram of another ue according to an embodiment of the present invention. As shown in fig. 8, the user terminal 800 may include an acquisition module 801 and a processing module 802.

An obtaining module 801, configured to obtain cell reselection reference information of a camped cell, where the camped cell is a cell in which a user terminal currently resides, the cell reselection reference information includes a cell identifier of a matched neighboring cell or a cell identifier of a non-matched neighboring cell, the matched neighboring cell includes a neighboring cell of the camped cell whose PLMN identifier matches a PLMN identifier of the camped cell, and the non-matched neighboring cell includes a neighboring cell of the camped cell whose PLMN identifier does not match the PLMN identifier of the camped cell.

A processing module 802, configured to determine an alternative cell for cell reselection according to the cell reselection reference information.

Further, if the cell reselection reference information includes a cell identifier of a matching neighboring cell, the processing module 802 is specifically configured to select the matching neighboring cell as an alternative cell for cell reselection according to the cell identifier of the matching neighboring cell.

In some embodiments, at least one PLMN identity in the set of PLMN identities broadcasted by the matching neighbor cell is the same as at least one PLMN identity in the set of PLMN identities broadcasted by the camped cell.

In some examples, the set of PLMN identities broadcast by the matching neighbor cell is the same as the set of PLMN identities broadcast by the camped cell.

In other examples, the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell are the same as the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell, and the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the matching neighboring cell is different from the ranking order of the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell.

In still other examples, a PLMN identifier ranked as a first item in the set of PLMN identifiers broadcast by the matching neighbor cell is the same as a PLMN identifier ranked as a first item in the set of PLMN identifiers broadcast by the camped cell.

Further, if the cell reselection reference information includes a cell identifier of a non-matching neighboring cell, the processing module 802 is specifically configured to select, according to the cell identifier of the non-matching neighboring cell, a neighboring cell except the matching neighboring cell as a candidate cell for cell reselection.

In some examples in further embodiments, at least one PLMN identification in the set of PLMN identifications broadcast by the non-matching neighbor cell is different from all PLMN identifications in the set of PLMN identifications broadcast by the camped cell.

In some further examples of some embodiments, at least one PLMN identity in the set of PLMN identities broadcast by the camped cell is different from all PLMN identities in the set of PLMN identities broadcast by the non-matching neighbor cell.

In still other examples in further embodiments, any one PLMN identification in the set of PLMN identifications broadcast by the non-matching neighbor cell is different from any one PLMN identification in the set of PLMN identifications broadcast by the camped cell.

In still other examples in further embodiments, a first PLMN identification in the set of PLMN identifications broadcast by the non-matching neighbor cell is different from a first PLMN identification in the set of PLMN identifications broadcast by the camped cell.

In some examples of further embodiments, the PLMN identities in the PLMN identity set broadcasted by the non-matching neighboring cell are the same as the PLMN identities in the PLMN identity set broadcasted by the camped cell, and an order of arrangement of the PLMN identities in the PLMN identity set broadcasted by the non-matching neighboring cell is different from an order of arrangement of the PLMN identities in the PLMN identity set broadcasted by the camped cell.

Further, the PLMN identity set is a PLMN identity list.

In some examples, the user terminal is in an idle state or an inactive state.

The user terminal provided in the embodiment of the present invention can implement each process implemented by the user terminal in the cell reselection method embodiment of fig. 4, and is not described herein again in order to avoid repetition.

Fig. 9 is a schematic hardware structure diagram of a base station for implementing the above embodiments. As shown in fig. 9, the base station 900 includes: a memory 901, a processor 902, a radio unit 903 and a computer program stored on the memory 901 and executable on the processor 902. Those skilled in the art will appreciate that the configuration of the base station shown in fig. 9 does not constitute a limitation of the base station, and that the base station may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The radio frequency unit 903 is configured to broadcast configuration parameters of neighboring cells of a subordinate cell through the subordinate cell, where the configuration parameters of each neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell. The set of PLMN identities comprises at least one PLMN identity.

Where, in fig. 9, the bus architecture may include any number of interconnected buses and bridges, particularly where one or more processors, represented by the processor 902, and various circuits, represented by the memory 901, are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The radio unit 903 may be a number of elements including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium for receiving and transmitting data under the control of the processor 902. The processor 902 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 902 in performing operations.

Preferably, an embodiment of the present invention further provides a base station, including a processor 902, a memory 901, and a computer program stored in the memory 901 and capable of running on the processor 902, where the computer program, when executed by the processor 902, implements each process of the above-mentioned embodiment of the cell reselection method for a base station, as shown in fig. 1, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The hardware structure of the base station implementing the processes of the embodiment of the cell reselection method shown in fig. 3 may refer to the hardware structure of the base station in fig. 9. The base station implementing the processes of the embodiment of the cell reselection method shown in fig. 3 differs from the base station shown in fig. 9 in that the radio frequency unit is configured to broadcast cell reselection reference information through cells under jurisdiction, where the cell reselection reference information includes a cell identifier of a matching neighboring cell or a cell identifier of a non-matching neighboring cell. The matched adjacent cell comprises an adjacent cell of the subordinate cell, wherein the public land mobile network PLMN identification is matched with the PLMN identification of the subordinate cell. The non-matching adjacent cells comprise adjacent cells of the subordinate cells of which the PLMN identifications are not matched with the PLMN identifications of the subordinate cells.

Similarly, the computer program in the base station for implementing each process of the embodiment of the cell reselection method shown in fig. 3 is executed by the processor to implement each process of the embodiment of the cell reselection method shown in fig. 3 for the base station, and can achieve the same technical effect, and is not described herein again to avoid repetition.

Fig. 10 is a schematic diagram of a hardware structure of a user terminal implementing the foregoing embodiment. As shown in fig. 10, the user terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, a processor 1010, and a power supply 1011. Those skilled in the art will appreciate that the user terminal architecture shown in fig. 10 is not intended to be limiting of user terminals, and that user terminals may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the user terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 1001 is configured to acquire configuration parameters of neighboring cells of a camped cell from the camped cell, where the configuration parameters of each neighboring cell include a cell identifier of the neighboring cell and a PLMN identifier set of the neighboring cell, the PLMN identifier set includes at least one PLMN identifier, and the camped cell is a cell in which a user terminal currently camps.

A processor 1010, configured to determine an alternative cell for cell reselection according to the configuration parameter of the neighboring cell.

In particular, the processor 1010 may be further configured to perform various steps in the processing method for the measurement interval of the user equipment shown in fig. 2. The relevant content of each step can refer to the relevant description in the above embodiments, and is not described herein again.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1001 may be used for receiving and sending signals during a message transmission or a call, and specifically, receives downlink data from a base station and then processes the downlink data to the processor 1010; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 1001 may also communicate with a network and other devices through a wireless communication system.

The user terminal provides the user with wireless broadband internet access through the network module 1002, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 1003 may convert audio data received by the radio frequency unit 1001 or the network module 1002 or stored in the memory 1009 into an audio signal and output as sound. Also, the audio output unit 1003 may also provide audio output related to a specific function performed by the user terminal 1000 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1003 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1004 is used to receive an audio or video signal. The input Unit 1004 may include a Graphic Processing Unit (GPU) 10041 and a microphone 10042, the graphic processor 10041 Processing image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1006. The image frames processed by the graphic processor 10041 may be stored in the memory 1009 (or other storage medium) or transmitted via the radio frequency unit 1001 or the network module 1002. The microphone 10042 can receive sounds and can process such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1001 in case of a phone call mode.

User terminal 1000 can also include at least one sensor 1005 such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 10061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 10061 and/or backlight when the user terminal 1000 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the user terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1005 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.

The display unit 1006 is used to display information input by the user or information provided to the user. The Display unit 1006 may include a Display panel 10061, and the Display panel 10061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1007 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the user terminal. Specifically, the user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 10071 (e.g., operations by a user on or near the touch panel 10071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 10071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1010, and receives and executes commands sent by the processor 1010. In addition, the touch panel 10071 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 10071, the user input unit 1007 can include other input devices 10072. Specifically, the other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 10071 can be overlaid on the display panel 10061, and when the touch panel 10071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1010 to determine the type of the touch event, and then the processor 1010 provides a corresponding visual output on the display panel 10061 according to the type of the touch event. Although in fig. 10, the touch panel 10071 and the display panel 10061 are two independent components for implementing the input and output functions of the user terminal, in some embodiments, the touch panel 10071 and the display panel 10061 may be integrated for implementing the input and output functions of the user terminal, which is not limited herein.

The interface unit 1008 is an interface for connecting an external device to the user terminal 1000. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 1008 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the user terminal 1000 or may be used to transmit data between the user terminal 1000 and an external device.

The memory 1009 may be used to store software programs as well as various data. The memory 1009 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, and the like), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1009 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1010 is a control center of the user terminal 1000, connects various parts of the entire user terminal using various interfaces and lines, and performs various functions of the user terminal and processes data by operating or executing software programs and/or modules stored in the memory 1009 and calling data stored in the memory 1009, thereby integrally monitoring the user terminal. Processor 1010 may include one or more processing units; preferably, the processor 1010 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

The user terminal 1000 can further include a power supply 1011 (e.g., a battery) for supplying power to various components, and preferably, the power supply 1011 can be logically connected to the processor 1010 through a power management system, so that functions of managing charging, discharging, and power consumption can be performed through the power management system.

In addition, the user terminal 1000 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a user terminal, which includes a processor 1010, a memory 1009, and a computer program stored in the memory 1009 and capable of running on the processor 1010, where the computer program is implemented by the processor 1010 to implement each process of the embodiment of the cell reselection method shown in fig. 2 for the user terminal, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The hardware structure of the user terminal implementing the procedures of the embodiment of the cell reselection method shown in fig. 4 may refer to the hardware structure of the user terminal in fig. 10. The base station implementing each process of the embodiment of the cell reselection method shown in fig. 4 is different from the user terminal shown in fig. 10 in that the radio frequency unit is configured to acquire cell reselection reference information of a camped cell, where the camped cell is a cell where the user terminal currently camps on, and the cell reselection reference information includes a cell identifier of a matching neighboring cell or a cell identifier of a non-matching neighboring cell. The matched adjacent cell comprises an adjacent cell of the resident cell, the PLMN identification of which is matched with the PLMN identification of the resident cell. The non-matching neighbor cells comprise neighbor cells of the resident cell of which the PLMN identification is not matched with the PLMN identification of the resident cell.

The processor is used for determining an alternative cell for cell reselection according to the cell reselection reference information.

Similarly, the computer program for the terminal, which implements the processes of the embodiment of the cell reselection method shown in fig. 4, when being executed by the processor, implements the processes of the embodiment of the cell reselection method shown in fig. 4 for the user terminal, and can achieve the same technical effects, and is not described herein again to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the embodiment of the cell reselection method for the base station as shown in fig. 1 or each process of the embodiment of the cell reselection method for the base station as shown in fig. 3, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the embodiment of the cell reselection method for the user terminal shown in fig. 2 or each process of the embodiment of the cell reselection method for the user terminal shown in fig. 4, and can achieve the same technical effect, and in order to avoid repetition, the description of the processes is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For the base station embodiment, the user terminal embodiment and the computer-readable storage medium embodiment, reference may be made to the description part of the method embodiments for relevant points.

It should be noted that, in this document, 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 identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method of the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A cell reselection method is applied to a base station, and comprises the following steps:

broadcasting cell reselection reference information through a subordinate cell, wherein the cell reselection reference information comprises a cell identifier of a matching neighbor cell, the matching neighbor cell comprises a neighbor cell of the subordinate cell, the public land mobile network PLMN identifier of the neighbor cell is matched with the PLMN identifier of the subordinate cell, and the matching neighbor cell is used as a candidate cell for cell reselection,

the PLMN identifications in the PLMN identification set broadcasted by the matching adjacent cell are the same as the PLMN identifications in the PLMN identification set broadcasted by the subordinate cell, the sequence of the PLMN identifications in the PLMN identification set broadcasted by the matching adjacent cell is different from the sequence of the PLMN identifications in the PLMN identification set broadcasted by the subordinate cell, and the PLMN identification set comprises more than two PLMN identifications.

2. A cell reselection method is applied to a user terminal, and comprises the following steps:

acquiring cell reselection reference information of a resident cell, wherein the resident cell is a cell in which the user terminal currently resides, the cell reselection reference information includes a cell identifier of a matching neighbor cell, the matching neighbor cell includes a Public Land Mobile Network (PLMN) identifier and a neighbor cell of the resident cell, the PLMN identifier in a PLMN identifier set broadcasted by the matching neighbor cell is the same as a PLMN identifier in a PLMN identifier set broadcasted by the resident cell, an arrangement sequence of the PLMN identifiers in a PLMN identifier set broadcasted by the matching neighbor cell is different from an arrangement sequence of the PLMN identifiers in a PLMN identifier set broadcasted by the resident cell, and the PLMN identifier set includes more than two PLMN identifiers;

and determining a candidate cell for cell reselection according to the cell reselection reference information, wherein the matched adjacent cell is used as the candidate cell for cell reselection.

3. The method according to claim 2, wherein the determining an alternative cell for cell reselection according to the cell reselection reference information comprises:

and selecting the matched adjacent cell as the candidate cell for the cell reselection according to the cell identifier of the matched adjacent cell.

4. A base station, comprising:

a broadcasting module, configured to broadcast cell reselection reference information through a subordinate cell, where the cell reselection reference information includes a cell identifier of a matching neighboring cell, the matching neighboring cell includes a neighboring cell of the subordinate cell whose public land mobile network PLMN identifier matches with a PLMN identifier of the subordinate cell, and the matching neighboring cell serves as a candidate cell for cell reselection,

5. A user terminal, comprising:

an obtaining module, configured to obtain cell reselection reference information of a camped cell, where the camped cell is a cell in which the user terminal currently camps, the cell reselection reference information includes a cell identifier of a matched neighbor cell, and the matched neighbor cell includes a neighbor cell of the camped cell in which a Public Land Mobile Network (PLMN) identifier matches with the PLMN identifier of the camped cell, where PLMN identifiers in a PLMN identifier set broadcasted by the matched neighbor cell are the same as PLMN identifiers in a PLMN identifier set broadcasted by the camped cell, an arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the matched neighbor cell is different from an arrangement order of the PLMN identifiers in the PLMN identifier set broadcasted by the camped cell, and the PLMN identifier set includes two or more PLMN identifiers;

and the processing module is used for determining a candidate cell for cell reselection according to the cell reselection reference information, and the matched neighbor cell is used as the candidate cell for cell reselection.

6. A base station comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, performing the steps of the cell reselection method as claimed in claim 1.

7. A user terminal comprising a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, performing the steps of the cell reselection method of claim 2 or 3.

8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the cell reselection method according to any one of claims 1 to 3.