CN107801221B - A method and device for cell reselection - Google Patents

Abstract

The invention discloses a kind of methods of cell reselection, comprising: obtains frequency point information list；According to the frequency point information list of acquisition, judge whether containing frequency point information identical with current service cell frequency point, and cell re-selection conditions are determined according to judging result；After the persistently preset reselection evaluation time, serving cell gravity treatment is triggered using determining cell re-selection conditions.The present invention further simultaneously discloses a kind of device of cell reselection.

Description

A method and device for cell reselection

technical field

The present invention relates to cell reselection technology in mobile communication, and in particular, to a method and device for cell reselection.

Background technique

In the third generation mobile communication and its subsequent evolution system, the radio access network is composed of multiple radio network subsystems. Each radio network subsystem includes a Radio Network Controller (RNC, Radio Network Controller), multiple Node Bs (NodeB), and a large number of User Equipments (UE, User Equipment). The cell is a communication service area that can be divided into a large number of UEs. When the UE is powered on and selects a Public Land Mobile Network (PLMN, Public Land Mobile Network), the UE will start to search for a suitable cell to camp on in the selected PLMN. This process is called cell selection; The cell is called the serving cell.

When camping in the serving cell, the UE needs to check the signal quality of the serving cell at all times. By measuring the received signal code power (RSCP, Received Signal Code Power) of the cell in real time, RSCP is also called the level value. Combined with the cell selection criterion S The cell selection reception level value S _rxlev of the cell is calculated from other parameter values in the criterion. Only when the value of S _rxlev of the cell is greater than 0, the UE can camp on a suitable serving cell. When the UE moves in idle mode due to location changes, signal changes and other factors, the RSCP value of the cell measured by the UE will change, resulting in the calculated S _rxlev value of the cell no longer meeting the camping condition, or the UE measures Other cells are more likely to meet the camping conditions, so the UE will change the serving cell currently camped on, and reselect other suitable serving cells to camp on. This process is called cell reselection.

In the Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System) terrestrial radio access network (UTRAN, UMTS Terrestrial Radio Access Network) system, there are related protocols that specify that the UE adopts cell reselection methods are mainly divided into two types: one One is a non-priority cell reselection evaluation method, and the other is a priority cell reselection evaluation method. Among them, in the priority cell reselection evaluation rules, the reselection protocol only performs reselection evaluation for adjacent cells on different frequency points in the UTRAN system, and adjacent cells on different frequency points in the UTRAN system, and cannot be used for the same frequency in the UTRAN system. In the actual application network environment, the same-frequency neighbors with the same frequency as the serving cell are ubiquitous. If the same-frequency neighbors cannot be evaluated and re-selected in time, serious It affects the access performance of the UE and reduces the access success rate of the UE.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention expect to provide a method and apparatus for cell reselection, which can effectively solve the problem that the prior art reselection evaluation strategy in the UTRAN protocol does not support intra-frequency neighbor cell reselection.

In order to achieve the above-mentioned purpose, the technical scheme of the embodiment of the present invention is realized as follows:

An embodiment of the present invention provides a method for cell reselection, the method includes:

Get the frequency point information list;

According to the obtained frequency point information list, it is judged whether it contains the same frequency point information as the frequency point of the current serving cell, and the cell reselection condition is determined according to the judgment result;

After the preset reselection evaluation time is continued, the determined cell reselection condition is used to trigger the serving cell reselection.

In the above solution, the obtaining the frequency point information list includes:

Obtain frequencies between different system cells according to the system message broadcast by the network side received by the UE, and form a frequency point information list by the frequencies between the different system cells;

Wherein, the system message also includes priorities among different system cells.

In the above solution, determining the cell reselection conditions according to the judgment result includes:

If the frequency point information list contains the same frequency point information as the current serving cell frequency point, the cell reselection condition of priority level reselection is adopted; if the frequency point information list does not contain the same frequency point as the current serving cell frequency point If the frequency point information is not selected, the cell reselection condition of non-priority reselection is adopted.

In the above solution, the method further includes: when using the cell reselection condition of priority level reselection, evaluating respectively according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell;

The evaluation is performed according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell, including:

When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold; when the same-frequency neighboring cell has priority When the level is lower than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighbor cell and the first preset reselection evaluation threshold, and the S value of the serving cell and the second preset reselection evaluation threshold value relationship.

In the above solution, the priority reselection and the non-priority reselection are performed concurrently, and reselection is triggered first if the reselection evaluation conditions are satisfied first.

An embodiment of the present invention further provides an apparatus for cell reselection, the apparatus includes: an acquisition module, a judgment module, a determination module, and a trigger module; wherein,

The obtaining module is used to obtain a frequency point information list;

The judging module is configured to judge, according to the obtained frequency point information list, whether it contains the same frequency point information as the current serving cell frequency point;

the determining module, configured to determine the cell reselection condition according to the judgment result of the judgment module;

The triggering module is configured to trigger the reselection of the serving cell by using the determined cell reselection condition after the preset reselection evaluation time is continued.

In the above scheme, the acquisition module is specifically used for:

Obtain frequencies between different system cells according to the system message broadcast by the network side received by the UE, and form a frequency point information list by the frequencies between the different system cells;

Wherein, the system message also includes priorities among different system cells.

In the above scheme, the determining module is specifically used for:

If the frequency point information list contains the same frequency point information as the current serving cell frequency point, the cell reselection condition of priority level reselection is adopted; if the frequency point information list does not contain the same frequency point as the current serving cell frequency point If the frequency point information is not selected, the cell reselection condition of non-priority reselection is adopted.

In the above solution, the determining module is further configured to evaluate respectively according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell when the cell reselection condition of the priority level reselection is adopted;

The evaluation is performed according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell, including:

When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold; when the same-frequency neighboring cell has priority When the level is lower than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighbor cell and the first preset reselection evaluation threshold, and the S value of the serving cell and the second preset reselection evaluation threshold value relationship.

In the above solution, the priority reselection and the non-priority reselection are performed concurrently, and reselection is triggered first if the reselection evaluation conditions are satisfied first.

In the method and device for cell reselection provided by the embodiment of the present invention, a list of frequency point information is obtained; according to the obtained frequency point information list, it is judged whether it contains the same frequency point information as the frequency point of the current serving cell, and according to the judgment result Determine the cell reselection condition; after the preset reselection evaluation time is continued, the determined cell reselection condition is used to trigger the serving cell reselection. In this way, the re-selection evaluation of adjacent cells on the same frequency is added to the priority reselection evaluation system, which effectively solves the problem that the priority re-selection evaluation strategy in the UTRAN protocol in the prior art does not support re-selection of co-frequency adjacent cells. At the same time, the non-priority reselection evaluation strategy is taken into account, so that the two reselection evaluation methods are processed concurrently, which can trigger the serving cell reselection more reasonably, improve the reselection performance of the UE, and improve the service quality and user experience.

Description of drawings

FIG. 1 is a schematic diagram of an implementation flowchart of a method for cell reselection according to an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a specific implementation of a method for cell reselection according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the composition and structure of an apparatus for cell reselection according to an embodiment of the present invention.

Detailed ways

In order to be able to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the present invention.

As shown in FIG. 1 , the implementation process of the method for cell reselection in the embodiment of the present invention includes the following steps:

Step 101: Obtain a frequency point information list;

This step specifically includes: acquiring frequencies between different system cells according to a system message broadcast by the network side received by the UE, and forming a frequency point information list from the frequencies between the different system cells;

Wherein, the system message also includes priorities among different system cells.

Here, according to the frequencies and priorities between different system cells included in the system message, it can be known that the system message is the system message 19 (Sib19, System information block 19) in the Long Term Evolution (LTE, Long Term Evolution) system broadcast message. In other words, when the current serving cell resides, the UE receives and stores the Sib19 from the broadcast channel of the current serving cell, and directly obtains the frequency point information list according to the frequencies between different system cells in the Sib19.

Step 102: According to the acquired frequency point information list, determine whether the frequency point information that is the same as the frequency point of the current serving cell is included, and determine the cell reselection condition according to the judgment result;

This step specifically includes: if the frequency point information list contains the same frequency point information as the current serving cell frequency point, adopt the cell reselection condition of priority level reselection; if the frequency point information list does not contain the same frequency point information as the current serving cell frequency point; If the frequency information of the serving cell has the same frequency, the cell reselection condition of non-priority reselection is adopted.

Here, when adopting the cell reselection condition of priority reselection, the evaluation can be performed according to the relationship between the priority of the same-frequency neighboring cell and the priority of the serving cell;

Wherein, the evaluation is performed according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell, including:

When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold; when the same-frequency neighboring cell has priority When the level is lower than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighbor cell and the first preset reselection evaluation threshold, and the S value of the serving cell and the second preset reselection evaluation threshold value relationship.

Specifically, in the priority reselection evaluation method, what the UE receives is the Sib19 broadcast by the network side, where the Sib19 includes the frequencies between different system cells and the priority information containing various adjacent cell frequencies, such as the UTRAN standard. The priority level of frequency points, the priority level of frequency points of Evolved-UMTS Terrestrial Radio Access (E-UTRA, Evolved-UMTS Terrestrial RadioAccess) standard, the priority level of frequency points of Global System for Mobile Communication (GSM, Global System for Mobile communication) standard, and the priority level of the serving cell. The value of the priority level ranges from 1 to 7, and the higher the level value, the higher the priority level. In theory, the priority level of the same-frequency frequency point should be the same as the priority level of the serving cell, but due to the indications of different fields in the Sib19 message, different configurations need to be considered in practical applications. First, the intra-frequency cell list in the system information block 11/12 (Sib11/12, System information block 11/12) is reused; secondly, the UE starts and completes the frequency of all cells in the intra-frequency cell list according to the measurement criterion, that is, the S criterion. At last, according to the priority level reselection evaluation protocol, when the priority level of the same-frequency neighboring cell is higher than that of the current serving cell, it is only necessary to calculate the S of the same-frequency neighboring cell. _{After the rxlev} value is greater than the first preset reselection evaluation threshold value, cell reselection can be triggered; when the priority level of the same-frequency neighboring cell is lower than that of the current serving cell, it needs to meet the S of the same-frequency neighboring cell. _{When the rxlev} value is greater than the first preset reselection evaluation threshold, the cell reselection can be triggered only when the S _rxlev value of the current serving cell is smaller than the second preset reselection evaluation threshold.

It should be noted that each threshold value is carried by Sib19 itself, and “first” and “second” are used to represent different preset reselection evaluation thresholds, wherein the first preset reselection evaluation threshold is used. The threshold value is used to represent the threshold value of the same-frequency adjacent cell; the second preset reselection evaluation threshold value is used to represent the threshold value of the serving cell.

Here, the non-priority reselection evaluation method is to perform candidate cell evaluation according to the neighbor cell list in Sib11/12 broadcast by the network side to the UE. Among them, the neighbor cells in the neighbor list are mainly divided into the same-frequency neighbors, the different-frequency neighbors, and the different-standard neighbors, that is, the same-frequency neighbors refer to the neighbors whose working frequency is the same as that of the current serving cell. ; Inter-frequency adjacent cells refer to adjacent cells whose working frequency is different from that of the current serving cell; inter-standard adjacent cells refer to GSM-based adjacent cells in non-priority reselection. It should be noted that the reselection evaluation strategies adopted by the same-frequency neighboring cells, the different-frequency neighboring cells, and the different-standard neighboring cells are the same, that is, the UE starts to measure the current Calculate the RSCP values of the serving cell and each co-frequency neighbor cell. After obtaining the measured RSCP values, in all co-frequency neighbor cells that satisfy the S _rxlev value greater than 0, calculate the R value of the co-frequency neighbor cell according to the cell reselection R criterion. When the R value of the same-frequency neighbor cell is greater than the R value of the current serving cell, and after maintaining a certain evaluation time, the UE may reselection to the serving cell.

Here, using the cell reselection R criterion to calculate the R value of the same-frequency neighboring cell belongs to the prior art, and details are not repeated here.

Here, priority reselection and non-priority reselection can be performed concurrently, and reselection is triggered first if the reselection evaluation conditions are met first. In this way, the evaluation and reselection of the same-frequency adjacent cells can be performed in time, thereby improving the access performance of the UE.

Step 103: Trigger the serving cell reselection by using the determined cell reselection condition after the preset reselection evaluation time is continued.

Below in conjunction with Fig. 2, the concrete realization process of the method for cell reselection provided by the present invention is described in further detail:

As shown in FIG. 2 , the specific implementation process of the method for cell reselection in the embodiment of the present invention includes the following steps:

Step 201: Determine whether the frequency point information list of Sib19 contains the same frequency point information as the frequency point of the current serving cell, if so, go to step 202; otherwise, go to step 206;

Here, before performing this step, the method further includes: receiving the Sib19 broadcast by the network side from the broadcast channel of the current serving cell.

Since Sib19 includes frequencies between cells of different systems, the frequency point information list can be formed by frequencies between cells of different systems.

Step 202: configure all cells in the Sib11/12 co-frequency cell list, and use the priority re-selection evaluation as the evaluation rule;

Here, after multiplexing the intra-frequency cell list in Sib11/12, start and complete the frequency measurement of all cells in the intra-frequency cell list according to the measurement criterion, that is, the S criterion, and report the measurement results.

Step 203: Determine whether the priority of the same-frequency neighbor cell is higher than the priority of the current serving cell, if so, go to Step 204; otherwise, go to Step 205;

Step 204: only compare the magnitude relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold, and jump to step 207;

Here, the cell reselection can be triggered only after it is calculated that the S _rxlev value of the same-frequency neighboring cell is greater than the first preset reselection evaluation threshold value.

Step 205: Compare the magnitude relationship between the S value of the same-frequency neighbor cell and the first preset reselection evaluation threshold, and the magnitude relationship between the S value of the serving cell and the second preset reselection evaluation threshold, and jump Go to step 207;

Here, it is necessary to satisfy that the S _rxlev value of the same-frequency neighboring cell is greater than the first preset reselection evaluation threshold value, and also when the S _rxlev value of the current serving cell is smaller than the second preset reselection evaluation threshold value, Only then can cell reselection be triggered.

It should be noted that each threshold value is carried by Sib19 itself, and “first” and “second” are used to represent different preset reselection evaluation thresholds, wherein the first preset reselection evaluation threshold is used. The threshold value is used to represent the threshold value of the same-frequency adjacent cell; the second preset reselection evaluation threshold value is used to represent the threshold value of the serving cell.

Step 206: configure the same-frequency neighbor cell according to the common reselection, and calculate the R value of the cell, and the evaluation rule adopts the non-priority level reselection evaluation;

Specifically, according to the received neighboring cell information in Sib11/12, the UE starts to measure the RSCP values of the current serving cell and each same-frequency neighboring cell, respectively, and after obtaining the measured RSCP values, it satisfies all the RSCP values whose S _rxlev value is greater than 0. In the same-frequency neighbor cell, the R value of the same-frequency neighbor cell is calculated according to the cell reselection R criterion. When the R value of the same-frequency neighbor cell is greater than the R value of the current serving cell and maintained for a certain evaluation time, the UE can be locked. Reselection of the remaining serving cell.

Here, using the cell reselection R criterion to calculate the R value of the same-frequency neighboring cell belongs to the prior art, and details are not repeated here.

Step 207 : After the preset reselection evaluation time is continued, the serving cell reselection that satisfies the reselection evaluation condition is triggered first.

What needs to be pointed out here is that as long as the network side broadcasts Sib19, no matter whether the network side also broadcasts Sib11/12 at the same time, the priority re-selection evaluation method is preferentially used at this time. If the network side does not broadcast Sib19, the non-priority level is used at this time. Re-selection evaluation method.

To implement the above method, an embodiment of the present invention further provides an apparatus for cell reselection. As shown in FIG. 3 , the apparatus includes an acquisition module 301, a judgment module 302, a determination module 303, and a trigger module 304; wherein,

The obtaining module 301 is used to obtain a frequency point information list;

The judging module 302 is configured to judge, according to the acquired frequency point information list, whether it contains the same frequency point information as the current serving cell frequency point;

The determining module 303 is configured to determine the cell reselection condition according to the determination result of the determining module 302;

The triggering module 304 is configured to trigger the serving cell reselection by using the determined cell reselection condition after the preset reselection evaluation time is continued.

Here, the obtaining module 301 is specifically used for:

Obtain frequencies between different system cells according to the system message broadcast by the network side received by the UE, and form a frequency point information list by the frequencies between the different system cells;

Wherein, the system message also includes priorities among different system cells.

The determining module 303 is specifically used for:

If the frequency point information list contains the same frequency point information as the current serving cell frequency point, the cell reselection condition of priority level reselection is adopted; if the frequency point information list does not contain the same frequency point as the current serving cell frequency point If the frequency point information is not selected, the cell reselection condition of non-priority reselection is adopted.

Wherein, when the determining module 303 determines the cell reselection condition using the priority level reselection, it can be evaluated according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell;

Wherein, the evaluation is performed according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell, including:

When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold; when the same-frequency neighboring cell has priority When the level is lower than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighbor cell and the first preset reselection evaluation threshold, and the S value of the serving cell and the second preset reselection evaluation threshold value relationship.

It should be noted here that "first" and "second" are used to represent different preset reselection evaluation thresholds, wherein the first preset reselection evaluation threshold is used to represent the same-frequency neighbor cell Threshold value; the second preset reselection evaluation threshold value is used to represent the threshold value of the serving cell.

Here, the priority reselection and the non-priority reselection are performed concurrently, and reselection is triggered first if the reselection evaluation condition is satisfied first.

In practical applications, the acquisition module 301 , the judgment module 302 , the determination module 303 , and the trigger module 304 can all be composed of a central processing unit (CPU, Central Processing Unit), a microprocessor (MPU, MicroProcessor Unit), a digital A signal processor (DSP, Digital Signal Processor), or a Field Programmable Gate Array (FPGA, Field Programmable Gate Array), etc. are implemented.

The embodiment of the present invention obtains a frequency point information list; according to the obtained frequency point information list, it is judged whether it contains the same frequency point information as the frequency point of the current serving cell, and the cell reselection condition is determined according to the judgment result; After the reselection evaluation time, the determined cell reselection condition is used to trigger the serving cell reselection. In this way, the re-selection evaluation of adjacent cells on the same frequency is added to the priority reselection evaluation system, which effectively solves the problem that the priority re-selection evaluation strategy in the UTRAN protocol in the prior art does not support re-selection of co-frequency adjacent cells. At the same time, the non-priority reselection evaluation strategy is taken into account, so that the two reselection evaluation methods are processed concurrently, which can trigger the serving cell reselection more reasonably, improve the reselection performance of the UE, and improve the service quality and user experience.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (8)

1. A method for cell reselection, wherein the method comprises: Get the frequency point information list; According to the obtained frequency point information list, it is judged whether it contains the same frequency point information as the frequency point of the current serving cell, and the cell reselection condition is determined according to the judgment result; After the preset reselection evaluation time is continued, the determined cell reselection condition is used to trigger the serving cell reselection; Wherein, determining the cell reselection condition according to the judgment result includes: If the frequency point information list contains the same frequency point information as the current serving cell frequency point, the cell reselection condition of priority level reselection is adopted; if the frequency point information list does not contain the same frequency point as the current serving cell frequency point If the frequency point information is not selected, the cell reselection condition of non-priority reselection is adopted. 2. The method according to claim 1, wherein the acquiring the frequency point information list comprises: According to the system message broadcast by the network side received by the user equipment UE, obtain the frequencies between different system cells, and form a frequency point information list by the frequencies between the different system cells; Wherein, the system message also includes priorities among different system cells. 3. The method according to claim 1, characterized in that, the method further comprises: when adopting the cell reselection condition of priority level reselection, evaluating respectively according to the relationship between the priority of the same-frequency neighboring cell and the priority of the serving cell ; Wherein, the evaluation according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell includes: When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold value, when the S value of the same-frequency neighboring cell is When it is greater than the first preset reselection evaluation threshold, trigger cell reselection; when the priority of the same-frequency neighbor cell is lower than the priority of the serving cell, compare the S value of the same-frequency neighbor cell with the first preset value The magnitude relationship of the reselection evaluation threshold value, and the magnitude relationship between the S value of the serving cell and the second preset reselection evaluation threshold value, when the S value of the same-frequency neighbor cell is greater than the first preset reselection evaluation threshold value , and when the S value of the serving cell is less than the second preset reselection evaluation threshold, cell reselection is triggered, and the first preset reselection evaluation threshold is the threshold of the same-frequency neighboring cell; Two preset reselection evaluation thresholds to represent the thresholds of the serving cell. 4 . The method according to claim 1 , wherein the priority reselection and the non-priority reselection are performed concurrently, and reselection is triggered first if the reselection evaluation condition is satisfied first. 5 . 5. A device for cell reselection, characterized in that the device comprises: an acquisition module, a judgment module, a determination module, and a trigger module; wherein, The obtaining module is used to obtain a frequency point information list; The judging module is used for judging whether it contains the same frequency information as the frequency of the current serving cell according to the obtained frequency information list; the determining module, configured to determine the cell reselection condition according to the judgment result of the judgment module; The triggering module is configured to trigger the reselection of the serving cell by using the determined cell reselection condition after the preset reselection evaluation time is continued; Wherein, the determining module is specifically used for: If the frequency point information list contains the same frequency point information as the current serving cell frequency point, the cell reselection condition of priority level reselection is adopted; if the frequency point information list does not contain the same frequency point as the current serving cell frequency point If the frequency point information is not selected, the cell reselection condition of non-priority reselection is adopted. 6. The device according to claim 5, wherein the acquisition module is specifically used for: Obtain frequencies between different system cells according to the system message broadcast by the network side received by the UE, and form a frequency point information list by the frequencies between the different system cells; Wherein, the system message also includes priorities among different system cells. 7. The apparatus according to claim 5, wherein the determining module is further configured to, when adopting the cell reselection condition for priority reselection, according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell, to evaluate; Wherein, the evaluation according to the relationship between the priority of the same-frequency neighbor cell and the priority of the serving cell includes: When the priority of the same-frequency neighboring cell is higher than the priority of the serving cell, compare the relationship between the S value of the same-frequency neighboring cell and the first preset reselection evaluation threshold value, when the S value of the same-frequency neighboring cell is When it is greater than the first preset reselection evaluation threshold, trigger cell reselection; when the priority of the same-frequency neighboring cell is lower than the priority of the serving cell, compare the S value of the same-frequency neighboring cell with the first preset value The magnitude relationship of the reselection evaluation threshold value, and the magnitude relationship between the S value of the serving cell and the second preset reselection evaluation threshold value, when the S value of the same-frequency neighbor cell is greater than the first preset reselection evaluation threshold value , and when the S value of the serving cell is less than the second preset reselection evaluation threshold, cell reselection is triggered, and the first preset reselection evaluation threshold is the threshold of the same-frequency neighboring cell; Two preset reselection evaluation thresholds to represent the thresholds of the serving cell. 8 . The apparatus according to claim 5 , wherein the priority reselection and the non-priority reselection are performed concurrently, and reselection is triggered first if the reselection evaluation condition is satisfied first. 9 .