CN107395534B - Method and apparatus for mobility management - Google Patents

Abstract

The present application provides a method and device for mobility management. The method includes: determining a first measurement value based on a first reference signal used by a first cell, and determining a second measurement value based on a second reference signal used by a second cell; according to the first measurement value, the second measurement value and offset value to perform cell selection, cell reselection or trigger measurement result reporting; wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or The first reference signal includes CSI-RS, and the second reference signal includes CRS; or both the first reference signal and the second reference signal include CSI-RS. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

Description

Method and apparatus for mobility management

This application is a divisional application of a patent application with the application number of 201210253256.4 and the invention titled "Method and Device for Mobility Management" submitted to the China Patent Office on July 20, 2012.

technical field

The present application relates to the field of communication technology, and more particularly, to a method and apparatus for mobility management.

Background technique

In the Long Term Evolution (LTE) system, with the introduction of the Coordinated multiple points (Comp) technology and new carriers, the Channel State Information-Reference Signal (CSI-RS) The signal will gradually replace the Common Reference Signal (CRS) signal, which is used for channel quality estimation and/or coding/decoding of the downlink signal of the transmission point in the Comp scenario, or for the control domain of the downlink signal of the cell using the new carrier type and data domain channel estimation and encoding/decoding. Introducing CSI-RS signals into mobility management, cell selection/reselection of user equipment (UE) in idle state, or cell handover of UEs in connected state, etc., the measurement mechanism based on CRS signal for measurement and decision is still used. For example, for a UE in an idle state, measure the reference signal received power (Reference Signal Receiving Power, RSRP)/Reference Signal Receiving Quality (RSRQ) signal quality of the CSI-RS signal, use the S criterion for cell selection, or use the R Criteria for cell reselection. For another example, the base station sends a measurement configuration to the UE, where the measurement configuration includes a measurement object, a measurement report triggering condition, a measurement result report, and the like. The UE obtains the measurement result by using the existing measurement mechanism, and reports the measurement result to the base station, so that the base station executes a cell handover command to the UE.

When the UE works in a mixed deployment scenario of an old version cell based on a CRS signal and a cell based on a CSI-RS signal, the accuracy of the measurement is affected because the configuration information of the CRS signal and the CSI-RS signal are inconsistent.

SUMMARY OF THE INVENTION

The present application provides a mobility management method and device, which can enable a UE to select a more suitable cell.

In a first aspect, a mobility management method is provided, comprising: determining a first measurement value based on a first reference signal used by a first cell, and determining a second measurement value based on a second reference signal used by a second cell; The first measurement value, the second measurement value and the offset value are used for cell selection, cell reselection or triggering the reporting of measurement results; wherein, the first reference signal includes a common reference signal CRS, and the second reference signal The signal includes channel state information reference signal CSI-RS; or the first reference signal includes CSI-RS, and the second reference signal includes CRS; or both the first reference signal and the second reference signal include CSI-RS RS.

In the first possible implementation, the specific implementation can be:

The setting manner of the offset value includes at least one of the following manners: setting according to the priority of the cell, setting according to the type of the first reference signal and the type of the second reference signal, setting according to the first reference signal The configuration parameters of the signal and the configuration parameters of the second reference signal are set according to the inter-frequency characteristics of the first cell and the second cell.

According to the first possible implementation manner, in the second possible implementation manner, the specific implementation may be:

The configuration parameters include at least one of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. The sequence configuration of the reference signal includes scrambling initialization parameters.

With reference to the first aspect or the first possible implementation manner or the second possible implementation manner of the first aspect, in a third possible implementation manner, the value and offset value to perform cell selection, cell reselection or trigger the reporting of measurement results. The specific implementation can be as follows:

The sum of the first measurement value and the offset value is added to the hysteresis value to obtain the measurement value of the first cell, and the second measurement value is the measurement value of the second cell. Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value and the measurement value of the second cell, or perform cell selection or cell reselection according to the measurement value of the first cell and the first cell. The measurement value of the second cell triggers the reporting of the measurement result; or

Adding the hysteresis value to the first measurement value obtains the measurement value of the first cell, adding the offset value to the second measurement value to obtain the measurement value of the second cell, according to the measurement value of the first cell cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the cell triggers the reporting of the measurement result; or

adding the offset value to the first measurement value and the second measurement value determined according to the CSI-RS, or adding the offset value to the first measurement value and the second measurement value In the measurement value determined according to the CRS, the measurement value of the first cell and the measurement value of the second cell are obtained, and the measurement value of the first cell determined by the measurement value of the first cell and the measurement value of the second cell is obtained. Perform cell selection or cell reselection according to the priority order of the second cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

In combination with the first aspect or the first possible implementation manner or the second possible implementation manner or the third possible implementation manner of the first aspect, in the fourth possible implementation manner, according to the first measurement value, the second measurement value and the offset value, before performing cell selection, cell reselection or triggering the reporting of measurement results, the specific implementation can be as follows:

Receive the offset value notified by the base station; or preset the offset value.

In combination with the first aspect or the first possible implementation or the second possible implementation or the third possible implementation or the fourth possible implementation, in the fifth possible implementation , the first cell is a serving cell, and the second cell is a neighbor cell.

In a second aspect, a mobility management method is provided, comprising: determining a third measurement value of a first cell based on a first reference signal used by a first cell, and determining a second cell based on a second reference signal used by the second cell The fourth measurement value of the The measurement value is used for cell selection, cell reselection or triggering the reporting of measurement results; the time threshold setting method includes at least one of the following methods: setting according to the priority of the cell, according to the first cell used by the first cell. The type of a reference signal and the type of the second reference signal used by the second cell are set according to the configuration parameters of the first reference signal and the configuration parameters of the second reference signal. The inter-frequency characteristics of the cell and the second cell are set; wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal The signal includes CSI-RS, and the second reference signal includes CRS; or both the first reference signal and the second reference signal include CSI-RS.

In the first possible implementation, the specific implementation can be:

The configuration parameters include at least one of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. The sequence configuration of the reference signal includes scrambling initialization parameters.

In combination with the second aspect or the first possible implementation manner of the second aspect, in the second possible implementation manner, the specific implementation may be:

Receive the time threshold value notified by the base station; or preset the time threshold value.

In combination with the second aspect or the first possible implementation manner or the second possible implementation manner of the second aspect, in the third possible implementation manner, the specific implementation may be:

The first cell is a serving cell, and the second cell is a neighbor cell.

In a third aspect, a mobility management method is provided, comprising: determining a fifth measurement value of the first cell based on a first reference signal used by the first cell; when a result of comparing the fifth measurement value with a first threshold When the continuous time is greater than or equal to the time threshold, cell selection, cell reselection or triggering of measurement result reporting is performed according to the fifth measurement value; the time threshold setting method includes at least one of the following methods One: setting according to the priority of the cell, setting according to the type of the reference signal of the cell, setting according to the configuration parameters of the reference signal used by the cell, and setting according to the inter-frequency characteristics between the cells; wherein the first The reference signals include channel state information reference signals CSI-RS.

In the first possible implementation, the specific implementation can be:

The sixth measurement value of the second cell is determined based on the second reference signal used by the second cell; when the comparison result between the fifth measurement value and the first threshold value and the comparison result between the sixth measurement value and the second threshold value continue When the constant time is greater than or equal to the time threshold, cell selection, cell reselection, or reporting of measurement results is triggered according to the fifth measurement value and the sixth measurement value.

In combination with the third aspect or the first possible implementation manner of the third aspect, in the second possible implementation manner, the specific implementation may be:

Receive the time threshold value notified by the base station; or preset the time threshold value.

In a fourth aspect, a mobility management method is provided, comprising: a second cell receiving configuration information of a third reference signal sent by a first cell and used by the first cell; The configuration information of the three reference signals configures a fourth reference signal used by the second cell; wherein the third reference signal and the fourth reference signal both include channel state information reference signal CSI-RS.

In a first possible implementation manner, the second cell configures the fourth reference signal used by the second cell according to the configuration information of the third reference signal, and the specific implementation may be:

Configure the configuration parameters of the fourth reference signal; the configuration parameters of the fourth reference signal are the same as the configuration parameters of the third reference signal, and the configuration parameters include at least one of the following: the number of ports of the reference signal, the reference signal subframe configuration, reference signal resource configuration, and reference signal sequence configuration. The sequence configuration of the reference signal includes scrambling initialization parameters.

In a fifth aspect, a user equipment is provided, comprising: a determining unit configured to determine a first measurement value based on a first reference signal used by a first cell, and determine a second measurement value based on a second reference signal used by a second cell; a control unit, configured to perform cell selection, cell reselection or trigger measurement result reporting according to the first measurement value determined by the determining unit, the second measurement value and the offset value determined by the determining unit; Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS ; or both the first reference signal and the second reference signal include CSI-RS.

In a first possible implementation manner, the setting manner of the offset value includes at least one of the following manners: setting according to the priority of the cell, according to the type of the first reference signal and the The type is set according to the configuration parameters of the first reference signal and the configuration parameters of the second reference signal, and the settings are set according to the inter-frequency characteristics of the first cell and the second cell.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in the second possible implementation manner, the control unit is specifically configured to:

The sum of the first measurement value and the offset value is added to the hysteresis value to obtain the measurement value of the first cell, and the second measurement value is the measurement value of the second cell. Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value and the measurement value of the second cell, or perform cell selection or cell reselection according to the measurement value of the first cell and the first cell. The measurement value of the second cell triggers the reporting of the measurement result; or

It is specifically used for: adding the first measurement value to the hysteresis value to obtain the measurement value of the first cell, adding the second measurement value to the offset value to obtain the measurement value of the second cell, according to the The priority order of the first cell and the second cell determined by the measurement value of a cell and the measurement value of the second cell is to perform cell selection or cell reselection, or perform cell selection or cell reselection according to the measurement value of the first cell and The measurement value of the second cell triggers the reporting of the measurement result; or

It is specifically used for: adding the offset value to the measurement value determined according to the CSI-RS in the first measurement value and the second measurement value, or adding the offset value to the first measurement value and Among the measurement values determined according to the CRS in the second measurement value, the measurement value of the first cell and the measurement value of the second cell are obtained, and according to the measurement value determined by the measurement value of the first cell and the measurement value of the second cell Perform cell selection or cell reselection according to the priority order of the first cell and the second cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

With reference to the fifth aspect or the first possible implementation manner or the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the user equipment further includes: a receiving unit, configured to receive a notification from a base station or the control unit is further configured to: preset the offset value.

In a sixth aspect, a user equipment is provided, comprising: a determining unit configured to determine a third measurement value of the first cell based on a first reference signal used by the first cell, and determine a third measurement value based on a second reference signal used by the second cell The fourth measurement value of the second cell; the control unit is used for when the continuous time of the comparison result of the third measurement value determined by the determining unit and the fourth measurement value is greater than or equal to a time threshold value , according to the third measurement value and the fourth measurement value, perform cell selection, cell reselection, or trigger the reporting of measurement results; the time threshold setting method includes at least one of the following methods: The priority is set according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell, according to the configuration parameters of the first reference signal and the first reference signal. The configuration parameters of the second reference signal are set according to the inter-frequency characteristics of the first cell and the second cell. Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS ; or both the first reference signal and the second reference signal include CSI-RS.

In a first possible implementation manner, the user equipment further includes:

a receiving unit, configured to receive the time threshold value notified by the base station; or the control unit is further configured to: preset the time threshold value.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the first cell is a serving cell, and the second cell is a neighbor cell.

In a seventh aspect, a user equipment is provided, comprising: a determining unit configured to determine a fifth measurement value of the first cell based on a first reference signal used by the first cell; and a control unit configured to, when the fifth measurement value is When the constant time of the comparison result with the first threshold value is greater than or equal to the time threshold value, cell selection, cell reselection or triggering the reporting of the measurement result is performed according to the fifth measurement value; the time threshold value is set The method includes at least one of the following methods: setting according to the priority of the cell, setting according to the type of the reference signal of the cell, setting according to the configuration parameters of the reference signal used by the cell, setting according to the inter-frequency characteristics between the cells ; wherein, the first reference signal includes a channel state information reference signal CSI-RS.

In the first possible implementation manner, the determining unit is further used for:

determining a sixth measurement value of the second cell based on the second reference signal used by the second cell;

The control unit is further configured to: when the continuous time between the comparison result of the fifth measurement value and the first threshold value and the comparison result of the sixth measurement value and the second threshold value is greater than or equal to a time threshold value and performing cell selection, cell reselection or triggering the reporting of measurement results according to the fifth measurement value and the sixth measurement value.

With reference to the seventh aspect or the first possible implementation manner of the seventh aspect, in a second possible implementation manner, the user equipment further includes:

a receiving unit, configured to receive the time threshold value notified by the base station; or the control unit is further configured to: preset the time threshold value.

In an eighth aspect, a network-side device is provided, including: a receiving unit, configured to receive, by a second cell, configuration information of a third reference signal sent by a first cell and used by the first cell; the second cell configures a fourth reference signal used by the second cell according to the configuration information of the third reference signal received by the receiving unit; wherein the third reference signal and the fourth reference signal are both Including channel state information reference signal CSI-RS.

In a first possible implementation manner, the configuration unit is specifically used for:

Configure the configuration parameters of the fourth reference signal; the configuration parameters of the fourth reference signal are the same as the configuration parameters of the third reference signal, and the configuration parameters include at least one of the following: the number of ports of the reference signal, the reference signal subframe configuration, reference signal resource configuration, and reference signal sequence configuration.

Through the above solution, in the present application, the user equipment measures each cell, obtains the measurement value of each cell, and performs cell selection, cell reselection or triggering the reporting of measurement results according to the measurement value and offset value of each cell. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

Description of drawings

FIG. 1 is a flowchart of a mobility management method according to an embodiment of the present application.

FIG. 2 is a flowchart of a mobility management method according to another embodiment of the present application.

FIG. 3 is a flowchart of a mobility management method according to another embodiment of the present application.

FIG. 4 is a schematic diagram of a mobility management method according to an embodiment of the present application.

FIG. 5 is a flowchart of a mobility management method according to another embodiment of the present application.

FIG. 6 is a structural block diagram of a user equipment according to an embodiment of the present application.

FIG. 7 is a structural block diagram of a user equipment according to another embodiment of the present application.

FIG. 8 is a structural block diagram of a user equipment according to another embodiment of the present application.

FIG. 9 is a structural block diagram of a network side device according to another embodiment of the present application.

FIG. 10 is a block diagram of a device according to an embodiment of the present application.

FIG. 11 is a structural block diagram of a user equipment according to an embodiment of the present application.

FIG. 12 is a structural block diagram of a user equipment according to another embodiment of the present application.

FIG. 13 is a structural block diagram of a user equipment according to another embodiment of the present application.

FIG. 14 is a structural block diagram of a network side device according to another embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solution of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Multiple Access) Code Division Multiple Access Wireless, WCDMA), General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) and the like.

User Equipment (UE), also known as Mobile Terminal (Mobile Terminal), Mobile User Equipment, etc., can communicate with one or more core networks via a radio access network (eg, Radio Access Network, RAN). , the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, may be a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device, which is associated with The radio access network exchanges language and/or data.

The network-side equipment can be a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (evolutional Node B, eNB, or e-NodeB in LTE) ), which is not limited in this application.

FIG. 1 is a flowchart of a mobility management method according to an embodiment of the present application. The method of FIG. 1 is performed by the UE.

101. Determine a first measurement value based on a first reference signal used by a first cell, and determine a second measurement value based on a second reference signal used by a second cell.

102. Perform cell selection, cell reselection, or trigger reporting of measurement results according to the first measurement value, the second measurement value, and the offset value.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the first reference signal include CSI-RS. Both reference signals include CSI-RS.

It should be understood that the first reference signal and the second reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

The user equipment in this embodiment of the present application measures each cell, obtains the measurement value of each cell, and performs cell selection, or cell reselection, or triggers the reporting of measurement results according to the measurement value and offset value of each cell. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. Correspondingly, the second cell may be a neighbor cell or a serving cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

Optionally, as another embodiment, in step 102, the setting manner of the offset value may include at least one of the following manners: setting according to the priority of the cell, setting according to the configuration parameter of the first reference signal and the second The configuration parameters of the reference signal are set according to the inter-frequency characteristics of the first cell and the second cell, and the like. It should be noted that the offset value can take positive or negative values. It should be understood that the reasons for introducing the offset value and the value range of the offset value in the embodiments of the present application are not limited. Further, the above configuration parameters may include one or any combination of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. The sequence configuration of the reference signal includes scrambling initialization parameters. It should also be understood that the embodiment of the present application does not limit the selection of configuration parameters.

Optionally, as another embodiment, in step 102, the sum of the first measurement value and the offset value may be added to the hysteresis value to obtain the measurement value of the first cell, and the second measurement value may be the measurement of the second cell. cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the cell triggers the reporting of the measurement result.

Optionally, as another embodiment, in step 102, the measurement value of the first cell may be obtained by adding the hysteresis value to the first measurement value, and the measurement value of the second cell may be obtained by adding the offset value to the second measurement value. cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the second cell triggers the reporting of the measurement result.

Optionally, as another embodiment, in step 102, the offset value may be added to the measurement value determined according to the CSI-RS in the first measurement value and the second measurement value, and the offset value may also be added to the measurement value. Among the first measurement value and the measurement value determined according to the CRS in the second measurement value, the measurement value of the first cell and the measurement value of the second cell are obtained, according to the measurement value determined by the measurement value of the first cell and the measurement value of the second cell. The priority order of the first cell and the second cell performs cell selection or cell reselection, or triggers the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

In an implementation manner, if the first reference signal includes CSI-RS, the sum of the first measurement value and the offset value can be added to the hysteresis value to obtain the measurement value of the first cell. If the first reference signal does not include CSI-RS, the first measurement value plus the hysteresis value is the measurement value of the first cell. If the second reference signal includes CSI-RS, add the offset value to the second measurement value to obtain the measurement value of the second cell; if the second reference signal does not include CSI-RS, then the second measurement value is the first cell's measurement value. Measurements. Cell selection or cell reselection is performed according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the measurement value of the second cell value to trigger the reporting of measurement results.

In another implementation manner, if the first reference signal includes a CRS, the sum of the first measurement value and the offset value may be added to the hysteresis value to obtain the measurement value of the first cell. If the first reference signal does not include a CRS , then the first measurement value plus the hysteresis value is the measurement value of the first cell; if the second reference signal includes CRS, then the second measurement value is added to the offset value to obtain the measurement value of the second cell, if the second reference signal If the CRS is not included, the second measurement value is the measurement value of the first cell; cell selection or cell selection is performed according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell Reselection, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

It should be understood that, in this embodiment of the present application, whether the offset value is added to the measurement value of the cell, or the measurement value obtained based on which reference signal is added to the offset value falls within the scope of the embodiment of the present application.

A non-limiting example of the mobility management method according to the embodiment of the present application is described in more detail below with reference to specific embodiments. It should be noted that these examples are only for helping those skilled in the art to better understand the embodiments of the present application, but are not intended to limit the scope of the present application.

It should be understood that whether a cell is a serving cell or a neighbor cell, whether a cell adopts a CRS or a CSI-RS signal, or whether a cell has an intra-frequency characteristic or an inter-frequency characteristic is only exemplary, and not a limitation of the embodiments of the present application. The following embodiment takes two cells as an example, and it should be understood that the number of neighbor cells is not limited in the embodiment of the present application, and the number of cells may be more than two.

For example, it is assumed that the first cell is a serving cell and uses CSI-RS signals for measurement, and the second cell is a neighbor cell and uses CRS signals for measurement. In the process of cell reselection, the UE in the idle state obtains the received signal power value Qmeas,s of the serving cell based on the CSI-RS signal measurement used by the serving cell according to the R criterion, and uses Qmeas,s as the first measurement value R1, The received signal code power value Qmeas,n of the neighbor cell is obtained based on the measurement of the CRS signal used by the neighbor cell, and Qmeas,n is used as the second measurement value R2.

In an implementation manner, because the configuration parameters of the CSI-RS signal and the configuration parameters of the CRS signal are inconsistent, for example, the time periods in which the CSI-RS signal and the CRS signal appear are different, correspondingly, an offset value can be added to R1, Further, a hysteresis value may be added to obtain the measurement value Rs of the serving cell. R2 is the measured value Rn of the neighbor cell. If Rn is greater than Rs, the priority order of the neighbor cell is higher than that of the serving cell. Further, when the duration of Rn greater than Rs is greater than or equal to the time threshold, the UE performs cell reselection and preferentially selects a neighbor cell; if Rs is greater than Rn, the priority order of the serving cell is higher than that of the neighbor cell, and the UE During cell reselection, the serving cell is preferentially selected. In this way, the accuracy of the measurement is improved, so that the UE selects a more suitable cell.

In another implementation manner, when the serving cell and the neighbor cell are of inter-frequency characteristics, that is, the serving cell and the neighbor cell work on different carrier frequencies, correspondingly, an offset value can be added to R1, and further, an offset value can be added to R1. A hysteresis value can be added. The offset value may also be introduced by taking into account that the configuration parameters of the reference signals adopted by the serving cell and the neighbor cells are inconsistent and/or the priority order of the cells configured by the operator, etc. In this way, flexibility in mobility management is provided. The manner in which the UE performs cell reselection is as described above and will not be repeated here.

For another example, it is assumed that the first cell is a serving cell and uses CSI-RS signals for measurement, and the second cell is a neighbor cell and uses CSI-RS signals for measurement. During the cell reselection process, the first measurement value R3 is obtained based on the CSI-RS signal measurement used by the serving cell, and the second measurement value R4 is obtained based on the CRS signal measurement used by the neighbor cell. The serving cell and the neighbor cell may work on the same carrier frequency, or may work on different carrier frequencies. Optionally, because the configuration parameters of the CSI-RS signal adopted by the serving cell and the neighbor cell are inconsistent, for example, the CSI-RS signal period interval of the serving cell is 10ms, and the CSI-RS signal period interval of the neighbor cell is 50ms, correspondingly, you can The offset value is added to R3 and/or R4 to obtain the measurement value Rs of the serving cell and the measurement value Rn of the neighbor cell. The offset value may also be introduced in consideration of whether the serving cell and the neighbor cells operate on the same carrier frequency and/or the priority order of the cells configured by the operator. Comparing the Rs and Rn values to determine the priority order of the serving cell and the neighbor cell for cell selection or cell reselection, and further, when the duration of the unchanged comparison result is greater than or equal to the time threshold, the UE performs cell selection again Or cell reselection. Therefore, it can also effectively ensure that the UE selects a cell with good stability. The reasons for introducing the time threshold and the value range of the time threshold are not limited in the embodiments of the present application.

It should be noted that the above examples are merely exemplary, and the embodiments of the present application are not limited thereto, and an offset value may also be introduced during cell selection or when triggering the reporting of measurement results.

Optionally, as another embodiment, before step 102, the UE may receive the offset value notified by the base station. For example, the base station can send the offset value by broadcasting, or the base station can send the offset value to the UE by carrying the offset value in the RRC signaling, or as a specific parameter of the UE, when the UE changes from the connected state to the idle state, the base station sends the offset value to the UE. The offset value is sent to the UE. The UE may also preset an offset value. It should be understood that the embodiments of the present application are not limited thereto.

The user equipment in this embodiment of the present application measures each cell, obtains the measurement value of each cell, and performs cell selection, cell reselection, or triggering the reporting of measurement results according to the measurement value and offset value of each cell. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

FIG. 2 is a flowchart of a mobility management method according to an embodiment of the present application. The method of FIG. 2 is performed by the UE.

201. Determine a third measurement value of the first cell based on the first reference signal used by the first cell, and determine a fourth measurement value of the second cell based on the second reference signal used by the second cell.

202, when the constant time of the comparison result between the third measurement value and the fourth measurement value is greater than or equal to the time threshold value, perform cell selection, cell reselection or trigger measurement according to the third measurement value and the fourth measurement value reporting of results.

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, setting according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell, The setting is performed according to the configuration parameters of the first reference signal and the configuration parameters of the second reference signal, and the setting is performed according to the inter-frequency characteristics of the first cell and the second cell.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the second reference signal both include CSI-RS.

It should be understood that the third reference signal and the fourth reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

In this embodiment of the present application, the user equipment measures each cell, obtains the measurement value of each cell, and when the time for which the comparison result of the measurement value of the cell remains unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection or triggering Reporting of measurement results. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. Correspondingly, the second cell may be a neighbor cell or a serving cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

Optionally, as another embodiment, the configuration parameter may include one or any combination of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. It should also be understood that the embodiment of the present application does not limit the selection of configuration parameters.

Optionally, before step 202, the UE may receive the time threshold value notified by the base station. For example, the base station may send the time threshold value by broadcasting, or the base station may send the time threshold value to the UE by carrying the time threshold value in the RRC signaling, or as a specific parameter of the UE, when the UE changes from the connected state to the idle state, The base station sends the time threshold value to the UE. The UE may also preset a time threshold value. It should be understood that the embodiments of the present application are not limited thereto.

The embodiments of the present application will be described in detail below with reference to the example of FIG. 3 .

FIG. 3 is a schematic diagram of a mobility management method according to an embodiment of the present application. It should be understood that whether a cell is a serving cell or a neighbor cell, whether a cell adopts a CRS or a CSI-RS signal, or whether a cell has an intra-frequency characteristic or an inter-frequency characteristic is only exemplary, and not a limitation of the embodiments of the present application. The following embodiment takes two cells as an example, and it should be understood that the number of neighbor cells is not limited in the embodiment of the present application, and the number of cells may be more than two. It should also be pointed out that the embodiments of the present application may refer to the time threshold set in the above manner during measurement processes such as cell selection or cell reselection of a UE in an idle state, or a UE in a connected state triggers the reporting of measurement results.

It should be noted that these examples are only for helping those skilled in the art to better understand the embodiments of the present application, but are not intended to limit the scope of the present application.

For example, it is assumed that the first cell is a serving cell and uses CSI-RS signals for measurement, and the second cell is a neighbor cell and uses CRS signals for measurement. During the cell reselection process, the UE in the idle state obtains the measurement value Rs of the serving cell based on the CSI-RS signal used by the serving cell, and obtains the measurement value Rn of the neighbor cell based on the CRS signal measurement used by the neighbor cell. It should be understood that an offset value may also be introduced in the measurement process, and the above-mentioned manner may be referred to, and thus will not be repeated here. Compare Rs and Rn. When Rn is greater than Rs, as shown in Figure 3, the difference between Rn and Rs is d, and when Rn is greater than Rs and the duration of the difference greater than d is greater than or equal to the time threshold, the UE can preferentially select a neighbor cell . It should be understood that the value range of the difference is not limited in this embodiment of the present application, and d may also be set to 0.

Specifically, for the setting of the time threshold value, the configuration parameters of the CSI-RS signal and the configuration parameters of the CRS signal may be inconsistent, for example, the time periods in which the CSI-RS signal and the CRS signal appear are different. Accordingly, the time threshold value is set is t1. The time threshold value can also be set according to the priority order of the cells configured by the operator. For example, the priority of the first cell is higher than that of the second cell, and when the measurement value of the first cell is greater than the measurement value of the second cell, The time threshold is set to t2, and when the measurement value of the second cell is greater than the measurement value of the first cell, the time threshold is set to t3. The time threshold may also be set according to the types of reference signals used by the first cell and the second cell and/or the inter-frequency characteristics of the first cell and the second cell. As an implementation manner, the UE may preset the above-mentioned time threshold. As another manner, the base station may send the set time threshold value to the UE, which is not limited in this embodiment of the present application.

In this embodiment of the present application, the user equipment measures each cell, obtains the measurement value of each cell, and when the time for which the comparison result of the measurement value of the cell remains unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection or triggering Reporting of measurement results. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

FIG. 4 is a flowchart of a mobility management method according to another embodiment of the present application. The method of FIG. 4 is performed by the UE.

301. Determine a fifth measurement value of the first cell based on the first reference signal used by the first cell.

302. When the continuous time of the comparison result between the fifth measurement value and the first threshold value is greater than or equal to the time threshold, perform cell selection, cell reselection, or trigger measurement result reporting according to the fifth measurement value.

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, setting according to the type of the reference signal of the cell, setting according to the configuration parameter of the reference signal used by the cell, and setting according to the reference signal between the cells. Set the different frequency characteristics. Wherein, the first reference signal includes a channel state information reference signal CSI-RS.

In this embodiment of the present application, the user equipment measures the cell, and when the time when the measurement value of the cell and the threshold comparison result remain unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection, or triggers the reporting of the measurement result. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

Optionally, as another embodiment, the configuration parameter may include one or any combination of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. It should also be understood that the embodiment of the present application does not limit the selection of configuration parameters.

Optionally, as another embodiment, the sixth measurement value of the second cell may be determined based on the second reference signal used by the second cell. When the continuous time between the comparison result of the fifth measurement value and the first threshold value and the comparison result of the sixth measurement value and the second threshold value is greater than or equal to the time threshold value, the measurement is performed according to the fifth measurement value and the sixth measurement value Cell selection, cell reselection or triggering the reporting of measurement results.

Optionally, before step 302, the UE may receive the time threshold value notified by the base station. For example, the base station may send the time threshold value by broadcasting, or the base station may send the time threshold value to the UE by carrying the time threshold value in the RRC signaling, or as a specific parameter of the UE, when the UE changes from the connected state to the idle state, The base station sends the time threshold value to the UE. The UE may also preset a time threshold value. It should be understood that the embodiments of the present application are not limited thereto.

The embodiments of the present application will be described in detail below with reference to specific examples.

For example, when the UE is in a connected state, the UE can selectively measure the measurement value of a certain cell. Specifically, when the measurement value of one of the neighbor cells measured by the UE is greater than or equal to the first threshold, and the continuous time for which the measurement value is greater than or equal to the threshold value is greater than or equal to the above-mentioned time threshold, the UE may report the measurement result to the base station so that the base station can perform cell handover. When the UE measures that the measurement value of the current serving cell is less than or equal to the second threshold, and the continuous time when the measurement value is less than or equal to the second threshold is greater than or equal to the above-mentioned time threshold, the UE may report the measurement result to base station so that the base station performs cell handover. For the setting method of the time threshold value, reference may be made to the above, which will not be repeated here. It should be understood that the embodiments of the present application are not limited to this, and may also be used for cell selection or cell reselection when the UE is in an idle state.

For another example, the UE may selectively measure the measurement values of two cells, and compare the measurement values of the two cells with corresponding thresholds. Perform cell selection, cell reselection, or trigger the reporting of measurement results. Specifically, when the UE is in a connected state, the UE can measure the measurement value Rs of the current serving cell and can also selectively measure the measurement value Rn of a certain neighbor cell. When Rn is greater than or equal to the first threshold V1 corresponding to the serving cell, while Rs is less than or equal to the second threshold V2 corresponding to the neighbor cell, and the time for which the comparison result remains unchanged is greater than or equal to the above-mentioned time threshold, the UE may The measurement result is reported to the base station so that the base station can perform cell handover.

It should be noted that the above examples are merely exemplary, rather than limiting the embodiments of the present application.

In this embodiment of the present application, the user equipment measures the cell, and when the time when the measurement value of the cell and the threshold comparison result remain unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection, or triggers the reporting of the measurement result. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

FIG. 5 is a flowchart of a mobility management method according to an embodiment of the present application. The method of FIG. 5 is executed by the network side device.

401. A second cell receives configuration information of a third reference signal sent by a first cell and used by the first cell.

402. The second cell configures the fourth reference signal used by the second cell according to the configuration information of the third reference signal.

Wherein, both the third reference signal and the fourth reference signal include channel state information reference signal CSI-RS.

In this embodiment of the present application, the second cell configures the reference signal used by the second cell according to the configuration information of the reference signal sent by the first cell. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, the UE performs measurement based on the same or similar reference signals during cell selection, cell reselection, or measurement triggering the reporting of measurement results. In this way, the measurement accuracy can be effectively guaranteed.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. Correspondingly, the second cell may be a neighbor cell or a serving cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

Optionally, as another embodiment, the second cell may configure configuration parameters of the fourth reference signal used by the second cell according to configuration information of the third reference signal used by the first cell. The configuration parameters of the fourth reference signal are the same as the configuration information of the third reference signal, and the configuration parameters of the reference signal include one or any combination of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, the reference signal Sequence configuration of the signal.

For example, the reference signal CSI-RS cycle interval of the first cell is 10ms, and is sent to the second cell. The second cell may configure a periodic interval at which the second cell uses the CSI-RS to be approximately 10ms or 10ms. In this way, the UE performs the measurement based on the same or similar reference signals in the measurement of cell selection, cell reselection or triggering the reporting of the measurement result, which can effectively ensure the accuracy of the measurement.

FIG. 6 is a block diagram of a user equipment according to an embodiment of the present application. The user equipment 50 of FIG. 6 includes a determination unit 51 and a control unit 52 .

The determining unit 51 is configured to determine the first measurement value based on the first reference signal used by the first cell, and determine the second measurement value based on the second reference signal used by the second cell.

The control unit 52 is configured to perform cell selection, cell reselection, or trigger reporting of the measurement result according to the first measurement value determined by the determination unit 51, the second measurement value and the offset value determined by the determination unit 51.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the first reference signal include CSI-RS. Both reference signals include CSI-RS.

It should be understood that the first reference signal and the second reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

The user equipment in this embodiment of the present application measures each cell, obtains the measurement value of each cell, and performs cell selection, or cell reselection, or triggers the reporting of measurement results according to the measurement value and offset value of each cell. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

The user equipment 50 may implement the operations related to the user equipment in the embodiment of FIG. 1 , and thus will not be described in detail to avoid repetition.

Optionally, as an embodiment, the setting manner of the offset value includes at least one of the following manners: setting according to the priority of the cell, setting according to the type of the first reference signal and the type of the second reference signal, and setting according to the type of the first reference signal and the type of the second reference signal. The configuration parameters of the first reference signal and the configuration parameters of the second reference signal are set according to the inter-frequency characteristics of the first cell and the second cell. In this way, flexibility in mobility management is provided.

Optionally, as another embodiment, the control unit 52 is specifically configured to: add a hysteresis value to the sum of the first measurement value and the offset value to obtain a measurement value of the first cell, and the second measurement value is a value of the second cell. Measurement value, cell selection or cell reselection is performed according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the cell triggers the reporting of the measurement result; or

It is specifically used for: adding the first measurement value to the hysteresis value to obtain the measurement value of the first cell, adding the offset value to the second measurement value to obtain the measurement value of the second cell, and according to the measurement value of the first cell and the second cell Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell; or

It is specifically used for: adding the offset value to the first measurement value and the second measurement value determined according to the CSI-RS, or adding the offset value to the first measurement value and the second measurement value and determining according to the CRS From the measured value of the first cell and the measured value of the second cell, the measurement value of the first cell and the measured value of the second cell are Selection or cell reselection, or triggering the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

Optionally, as another embodiment, the user equipment 50 further includes: a receiving unit 53 configured to receive the offset value notified by the base station; or the control unit 52 is further configured to: preset the offset value.

FIG. 7 is a block diagram of a user equipment according to an embodiment of the present application. The user equipment 60 of FIG. 7 includes a determination unit 61 and a control unit 62 .

The determining unit 61 is configured to determine the third measurement value of the first cell based on the first reference signal used by the first cell, and determine the fourth measurement value of the second cell based on the second reference signal used by the second cell.

The control unit 62 is configured to, when the continuous time of the comparison result of the third measurement value and the fourth measurement value of the determination unit 61 is greater than or equal to the time threshold value, according to the third measurement value, the fourth measurement value and the bias Shift value, perform cell selection, cell reselection, or trigger the reporting of measurement results.

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell For setting, the setting is performed according to the configuration parameters of the first reference signal and the configuration parameters of the second reference signal, and the setting is performed according to the inter-frequency characteristics of the first cell and the second cell.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the first reference signal include CSI-RS. Both reference signals include CSI-RS.

It should be understood that the third reference signal and the fourth reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. Correspondingly, the second cell may be a neighbor cell or a serving cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

In this embodiment of the present application, the user equipment measures each cell, obtains the measurement value of each cell, and when the time for which the comparison result of the measurement value of the cell remains unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection or triggering Reporting of measurement results. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

The user equipment 60 may implement the operations related to the user equipment in the embodiments of FIG. 2 and FIG. 3 , and thus will not be described in detail to avoid repetition.

Optionally, as another embodiment, the user equipment 60 may further include: a receiving unit 63, configured to receive the time threshold value notified by the base station; or the control unit 62 is further configured to: preset the time threshold value.

FIG. 8 is a block diagram of a user equipment according to another embodiment of the present application. The user equipment 70 of FIG. 8 includes a determination unit 71 and a control unit 72 .

The determining unit 71 is configured to determine the fifth measurement value of the first cell based on the first reference signal used by the first cell.

The control unit 72 is configured to perform cell selection and cell reselection according to the fifth measurement value when the continuous time of the comparison result of the fifth measurement value determined by the determination unit 71 and the first threshold value is greater than or equal to the time threshold value Or trigger the reporting of measurement results.

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, setting according to the type of the reference signal of the cell, setting according to the configuration parameter of the reference signal used by the cell, and setting according to the reference signal between the cells. Set the different frequency characteristics. Wherein, the first reference signal includes a channel state information reference signal CSI-RS.

The user equipment 80 may implement the operations related to the user equipment in the embodiment of FIG. 4 , and thus will not be described in detail in order to avoid repetition.

Optionally, as an embodiment, the determining unit 71 is further configured to: determine the sixth measurement value of the second cell based on the second reference signal used by the second cell. The control unit 72 is further configured to: when the continuous time of the comparison result between the fifth measurement value and the first threshold value and the comparison result between the sixth measurement value and the second threshold value is greater than or equal to the time threshold value, according to the fifth measurement value value and the sixth measurement value for cell selection, cell reselection or triggering the reporting of measurement results.

Optionally, as another embodiment, the user equipment 70 may further include: a receiving unit 73, configured to receive the time threshold value notified by the base station; or the control unit 72 is further configured to: preset the time threshold value.

In this embodiment of the present application, the user equipment measures the cell, and when the time when the measurement value of the cell and the threshold comparison result remain unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection, or triggers the reporting of the measurement result. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

FIG. 9 is a block diagram of a network side device according to an embodiment of the present application. The network side device 80 in FIG. 9 includes a receiving unit 81 and a configuration unit 82 .

a receiving unit 81, configured for the second cell to receive the configuration information of the third reference signal sent by the first cell and used by the first cell;

The configuration unit 82 is configured for the second cell to configure the fourth reference signal used by the second cell according to the configuration information of the third reference signal received by the receiving unit 81 .

Wherein, both the third reference signal and the fourth reference signal include channel state information reference signal CSI-RS.

The network-side device 80 may implement the operations involving the network-side device in the embodiment of FIG. 5 , and thus will not be described in detail in order to avoid repetition.

Optionally, as an embodiment, the configuration unit 82 is specifically configured to: configure configuration parameters of the fourth reference signal; the configuration parameters of the fourth reference signal are the same as the configuration parameters of the third reference signal, and the configuration parameters include at least one of the following One: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal.

In this embodiment of the present application, the second cell configures the reference signal used by the second cell according to the configuration information of the reference signal sent by the first cell. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, the UE performs measurement based on the same or similar reference signals during cell selection, cell reselection, or measurement triggering the reporting of measurement results. In this way, the measurement accuracy can be effectively guaranteed.

The embodiments of the present application further provide device embodiments for implementing the steps and methods in the above method embodiments. The embodiments of the present application can be applied to user equipment and network side equipment in various communication systems. FIG. 10 shows an embodiment of an apparatus in which apparatus 800 includes a transmitter 802 , a receiver 803 , a power controller 806 , a decoding processor 805 , a processor 806 , a memory 807 and an antenna 801 . The operation of the device 800 is controlled by a processor 806, which may also be referred to as a central processing unit (CPU) or a processor. Memory 807 , which may include read-only memory and random access memory, provides instructions and data to processor 806 . A portion of memory 807 may also include non-volatile row random access memory (NVRAM). In particular applications, device 800 may be embedded in or may itself be a wireless communication device such as a mobile phone, and may also include a carrier housing transmitter 802 and receiver 803 to allow data transmission and transmission between device 800 and a remote location. take over. Transmitter 802 and receiver 803 may be coupled to antenna 801 . Various components of the device 800 are coupled together through a bus system 810, wherein the bus system 810 includes a power bus, a control bus and a status signal bus in addition to a data bus. However, for the sake of clarity, the various buses are labeled as bus system 810 in the figure. The device 800 may also include a processor 806 for processing signals, a power controller 804, and a decoding processor 805 in addition. .

The methods disclosed in the above embodiments of the present application may be applied to the above-mentioned device 800 , or mainly implemented by the processor 806 and the receiver 803 therein. The processor 806 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 806 or an instruction in the form of software. For executing the methods disclosed in the embodiments of the present application, the above-mentioned decoding processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor, decoder or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 807, and the decoding unit reads the information in the memory 807, and completes the steps of the above method in combination with its hardware.

Further, FIG. 11 is a structural block diagram of a user equipment according to an embodiment of the present application. The user equipment 1100 of FIG. 11 includes a processor 110 and a memory 120 .

The processor 110 is configured to determine the first measurement value based on the first reference signal stored in the memory 120 and used by the first cell, and determine the second measurement value based on the second reference signal stored in the memory 120 and used by the second cell ; for performing cell selection, cell reselection or triggering the reporting of measurement results according to the determined first measurement value, second measurement value and offset value.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the first reference signal include CSI-RS. Both reference signals include CSI-RS.

It should be understood that the first reference signal and the second reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

The user equipment in this embodiment of the present application measures each cell, obtains the measurement value of each cell, and performs cell selection, or cell reselection, or triggers the reporting of measurement results according to the measurement value and offset value of each cell. In this way, in a cell scenario where CSI-RS is introduced in mobility management, the UE can select a more suitable cell.

The user equipment 1100 may implement the operations related to the user equipment in the embodiment of FIG. 1 , and thus will not be described in detail to avoid repetition.

Optionally, as an embodiment, the setting manner of the offset value includes at least one of the following manners: setting according to the priority of the cell, setting according to the type of the first reference signal and the type of the second reference signal, and setting according to the type of the first reference signal and the type of the second reference signal. The configuration parameters of the first reference signal and the configuration parameters of the second reference signal are set according to the inter-frequency characteristics of the first cell and the second cell. In this way, flexibility in mobility management is provided.

Optionally, as another embodiment, the processor 110 is specifically configured to: add a hysteresis value to the sum of the first measurement value and the offset value to obtain a measurement value of the first cell, and the second measurement value is a measurement value of the second cell. Measurement value, cell selection or cell reselection is performed according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the cell triggers the reporting of the measurement result; or

It is specifically used for: adding the first measurement value to the hysteresis value to obtain the measurement value of the first cell, adding the offset value to the second measurement value to obtain the measurement value of the second cell, and according to the measurement value of the first cell and the second cell Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell; or

It is specifically used for: adding the offset value to the first measurement value and the second measurement value determined according to the CSI-RS, or adding the offset value to the first measurement value and the second measurement value and determining according to the CRS From the measured value of the first cell and the measured value of the second cell, the measurement value of the first cell and the measured value of the second cell are Selection or cell reselection, or triggering the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell.

Optionally, as another embodiment, the user equipment 1100 further includes: a receiver 130, configured to receive the offset value notified by the base station; or the processor 110 is further configured to: preset the offset value.

FIG. 12 is a structural block diagram of a user equipment according to another embodiment of the present application. The user equipment 20 of FIG. 12 includes a processor 21 and a memory 22 .

The processor 21 is configured to determine a third measurement value of the first cell based on the first reference signal stored in the memory 22 and used by the first cell, and based on the second reference signal stored in the memory 22 and used by the second cell The fourth measurement value of the second cell is used to, when the determined continuous time of the comparison result between the third measurement value and the fourth measurement value is greater than or equal to the time threshold value, according to the third measurement value, the fourth measurement value value and offset value to perform cell selection, cell reselection, or trigger the reporting of measurement results.

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell For setting, the setting is performed according to the configuration parameters of the first reference signal and the configuration parameters of the second reference signal, and the setting is performed according to the inter-frequency characteristics of the first cell and the second cell.

Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or the first reference signal includes a CSI-RS, and the second reference signal includes a CRS; or the first reference signal and the first reference signal include CSI-RS. Both reference signals include CSI-RS.

It should be understood that the third reference signal and the fourth reference signal may include multiple ones, and the same cell may weight the measurement values obtained based on different reference signals to determine the measurement value of the cell. The embodiments of the present application are not limited.

Optionally, as an embodiment, the first cell may be a serving cell or a neighbor cell. Correspondingly, the second cell may be a neighbor cell or a serving cell. It should be understood that this application is not limited thereto. It should also be noted that the embodiment of the present application does not limit the number of neighbor cells.

In this embodiment of the present application, the user equipment measures each cell, obtains the measurement value of each cell, and when the time for which the comparison result of the measurement value of the cell remains unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection or triggering Reporting of measurement results. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

The user equipment 20 may implement the operations related to the user equipment in the embodiments of FIG. 2 and FIG. 3 , and thus will not be described in detail in order to avoid repetition.

Optionally, as another embodiment, the user equipment 20 may further include: a receiver 23, configured to receive the time threshold value notified by the base station; or the processor 21 is further configured to: preset the time threshold value.

FIG. 13 is a structural block diagram of a user equipment according to another embodiment of the present application. The user equipment 30 of FIG. 13 includes a processor 31 and a memory 32 .

The processor 31 is configured to determine the fifth measurement value of the first cell based on the first reference signal stored in the memory 32 and used by the first cell. The processor 31 is configured to perform cell selection, cell reselection or trigger the reporting of the measurement result according to the fifth measurement value when the continuous time of the comparison result between the fifth measurement value and the first threshold value is greater than or equal to the time threshold value ;

The time threshold value setting method includes at least one of the following methods: setting according to the priority of the cell, setting according to the type of the reference signal of the cell, setting according to the configuration parameter of the reference signal used by the cell, and setting according to the reference signal between the cells. Set the different frequency characteristics. Wherein, the first reference signal includes a channel state information reference signal CSI-RS.

Optionally, as an embodiment, the processor 31 is further configured to: determine the sixth measurement value of the second cell based on the second reference signal stored in the memory 32 and used by the second cell. The processor 31 is further configured to: when the continuous time between the comparison result of the fifth measurement value and the first threshold value and the comparison result of the sixth measurement value and the second threshold value is greater than or equal to the time threshold value, according to the first threshold value. The fifth measurement value and the sixth measurement value are used for cell selection, cell reselection, or triggering the reporting of measurement results.

The user equipment 30 may implement the operations related to the user equipment in the embodiment of FIG. 4 , and thus will not be described in detail in order to avoid repetition.

Optionally, as another embodiment, the user equipment 30 may further include: a receiver 33, configured to receive the time threshold value notified by the base station; or the processor 31 is further configured to: preset the time threshold value.

In this embodiment of the present application, the user equipment measures the cell, and when the time when the measurement value of the cell and the threshold comparison result remain unchanged is greater than or equal to the time threshold, the UE performs cell selection, cell reselection, or triggers the reporting of the measurement result. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, a time threshold is set based on cell priority order, reference model type, reference signal configuration parameters, and/or inter-frequency characteristics of cells. In this way, it can effectively ensure that the UE selects a cell with good stability, and provides flexibility in mobility management.

FIG. 14 is a block diagram of a network side device according to an embodiment of the present application. The network-side device 40 in FIG. 14 includes a receiver 41 and a processor 42 .

a receiver 41, configured for the second cell to receive the configuration information of the third reference signal sent by the first cell and used by the first cell;

The processor 42 is configured for the second cell to configure the fourth reference signal used by the second cell according to the configuration information of the third reference signal received by the receiver 41 .

Wherein, both the third reference signal and the fourth reference signal include channel state information reference signal CSI-RS.

The network-side device 40 can implement the operations involving the network-side device in the embodiment of FIG. 5 , and thus will not be described in detail in order to avoid repetition.

Optionally, as an embodiment, the processor 42 is specifically configured to: configure configuration parameters of the fourth reference signal; the configuration parameters of the fourth reference signal are the same as the configuration parameters of the third reference signal, and the configuration parameters include at least one of the following One: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal.

In this embodiment of the present application, the second cell configures the reference signal used by the second cell according to the configuration information of the reference signal sent by the first cell. Therefore, in a cell scenario where CSI-RS is introduced in mobility management, the UE performs measurement based on the same or similar reference signals during cell selection, cell reselection, or measurement triggering the reporting of measurement results. In this way, the measurement accuracy can be effectively guaranteed.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (33)

1. A method for mobility management, comprising: The first measurement value is determined based on the first reference signal used by the first cell, and the second measurement value is determined based on the second reference signal used by the second cell; according to the first measurement value, the second measurement value and the offset value, performing cell selection, cell reselection or triggering the reporting of measurement results; Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or The first reference signal includes CSI-RS, and the second reference signal includes CRS; or both the first reference signal and the second reference signal include CSI-RS; The setting manner of the offset value includes at least one of the following manners: setting according to the type of the first reference signal and the type of the second reference signal; setting according to the configuration parameter of the first reference signal and the first reference signal; The configuration parameters of the second reference signal are set. 2 . The method according to claim 1 , wherein the configuration parameter comprises at least one of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. 3 . 3. The method according to claim 1 or 2, wherein, according to the first measurement value, the second measurement value and the offset value, performing cell selection, cell reselection or triggering reporting of measurement results, include: The sum of the first measurement value and the offset value is added to the hysteresis value to obtain the measurement value of the first cell, and the second measurement value is the measurement value of the second cell. Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value and the measurement value of the second cell, or perform cell selection or cell reselection according to the measurement value of the first cell and the first cell. The measurement value of the second cell triggers the reporting of the measurement result; or Adding the hysteresis value to the first measurement value obtains the measurement value of the first cell, adding the offset value to the second measurement value to obtain the measurement value of the second cell, according to the measurement value of the first cell cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value of the first cell and the measurement value of the second cell, or according to the measurement value of the first cell and the second cell The measurement value of the cell triggers the reporting of the measurement result; or adding the offset value to the first measurement value and the second measurement value determined according to the CSI-RS, or adding the offset value to the first measurement value and the second measurement value In the measurement value determined according to the CRS, the measurement value of the first cell and the measurement value of the second cell are obtained, and the measurement value of the first cell determined by the measurement value of the first cell and the measurement value of the second cell is obtained. Perform cell selection or cell reselection according to the priority order of the second cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell. The method according to claim 1 or 2, characterized in that, according to the first measurement value, the second measurement value and the offset value, cell selection, cell reselection or triggering of measurement result reporting is performed Before, the method further includes: receiving the offset value notified by the base station; or The offset value is preset. 5. The method according to claim 1 or 2, wherein the first cell is a serving cell, and the second cell is a neighbor cell. 6. A method for mobility management, comprising: determining a third measurement value of the first cell based on the first reference signal used by the first cell; determining a fourth measurement value of the second cell based on the second reference signal used by the second cell; When the continuous time of the comparison result between the third measurement value and the fourth measurement value is greater than or equal to a time threshold, cell selection is performed according to the third measurement value and the fourth measurement value, Cell reselection or triggering the reporting of measurement results; The time threshold value setting manner includes at least one of the following manners: setting according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell, and setting according to the type of the first reference signal used by the first cell. setting the configuration parameters of the first reference signal and the configuration parameters of the second reference signal; Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or The first reference signal includes CSI-RS, and the second reference signal includes CRS; or Both the first reference signal and the second reference signal include CSI-RS. 7. The method according to claim 6, wherein the configuration parameters include at least one of the following: the number of ports of the reference signal, the subframe configuration of the reference signal, the resource configuration of the reference signal, and the sequence configuration of the reference signal. 8. The method of claim 6 or 7, wherein the method further comprises: receiving the time threshold notified by the base station; or The time threshold value is preset. 9. The method of claim 8, wherein the receiving the time threshold notified by the base station comprises: Receive the time threshold value sent by the base station by broadcasting; or The time threshold value sent by the base station through the radio resource control RRC signaling is received. 10. The method according to claim 8, wherein the receiving the time threshold notified by the base station comprises: When the user equipment changes from the connected state to the idle state, the time threshold value notified by the base station is received. 11. The method of claim 6 or 7, wherein the method further comprises: The time threshold is quoted in the process of cell selection, cell reselection or triggering the reporting of measurement results. 12. The method according to claim 6 or 7, wherein the first cell is a serving cell, and the second cell is a neighbor cell. 13. A method for mobility management, comprising: determining a fifth measurement value of the first cell based on the first reference signal used by the first cell; When the continuous time of the comparison result between the fifth measurement value and the first threshold value is greater than or equal to the time threshold value, perform cell selection, cell reselection or trigger measurement result reporting according to the fifth measurement value; The time threshold setting method includes at least one of the following methods: setting according to the type of the reference signal of the cell, and setting according to the configuration parameter of the reference signal used by the cell; Wherein, the first reference signal includes a channel state information reference signal CSI-RS. 14. The method of claim 13, further comprising: determining a sixth measurement value of the second cell based on the second reference signal used by the second cell; When the continuous time between the comparison result of the fifth measurement value and the first threshold value and the comparison result of the sixth measurement value and the second threshold value is greater than or equal to the time threshold value, according to the fifth measurement value and performing cell selection, cell reselection or triggering reporting of measurement results with the sixth measurement value. 15. The method of claim 13 or 14, wherein the method further comprises: receiving the time threshold notified by the base station; or The time threshold value is preset. 16. The method of claim 15, wherein the receiving the time threshold notified by the base station comprises: Receive the time threshold value sent by the base station by broadcasting; or The time threshold value sent by the base station through the radio resource control RRC signaling is received. 17. The method according to claim 15, wherein the receiving the time threshold notified by the base station comprises: When the user equipment changes from the connected state to the idle state, the time threshold value notified by the base station is received. 18. The method of claim 13 or 14, wherein the method further comprises: The time threshold is quoted in the process of cell selection, cell reselection or triggering the reporting of measurement results. 19. A user equipment, comprising: a determining unit, configured to determine the first measurement value based on the first reference signal used by the first cell, and determine the second measurement value based on the second reference signal used by the second cell; a control unit, configured to perform cell selection, cell reselection or trigger measurement result reporting according to the first measurement value determined by the determining unit, the second measurement value and the offset value determined by the determining unit; Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or The first reference signal includes CSI-RS, and the second reference signal includes CRS; or both the first reference signal and the second reference signal include CSI-RS; The setting manner of the offset value includes at least one of the following manners: setting according to the type of the first reference signal and the type of the second reference signal; setting according to the configuration parameter of the first reference signal and the first reference signal; The configuration parameters of the second reference signal are set. 20. The user equipment of claim 19, wherein the controller is specifically configured to: The sum of the first measurement value and the offset value is added to the hysteresis value to obtain the measurement value of the first cell, and the second measurement value is the measurement value of the second cell. Perform cell selection or cell reselection according to the priority order of the first cell and the second cell determined by the measurement value and the measurement value of the second cell, or perform cell selection or cell reselection according to the measurement value of the first cell and the first cell. The measurement value of the second cell triggers the reporting of the measurement result; or It is specifically used for: adding the first measurement value to the hysteresis value to obtain the measurement value of the first cell, adding the second measurement value to the offset value to obtain the measurement value of the second cell, according to the The priority order of the first cell and the second cell determined by the measurement value of a cell and the measurement value of the second cell is to perform cell selection or cell reselection, or perform cell selection or cell reselection according to the measurement value of the first cell and The measurement value of the second cell triggers the reporting of the measurement result; or It is specifically used for: adding the offset value to the measurement value determined according to the CSI-RS in the first measurement value and the second measurement value, or adding the offset value to the first measurement value and Among the measurement values determined according to the CRS in the second measurement value, the measurement value of the first cell and the measurement value of the second cell are obtained, and according to the measurement value determined by the measurement value of the first cell and the measurement value of the second cell Perform cell selection or cell reselection according to the priority order of the first cell and the second cell, or trigger the reporting of the measurement result according to the measurement value of the first cell and the measurement value of the second cell. 21. The user equipment according to claim 19 or 20, wherein the user equipment further comprises: a receiving unit, configured to receive the offset value notified by the base station; or The control unit is also used to: The offset value is preset. 22. A user equipment, comprising: a determining unit, configured to determine the third measurement value of the first cell based on the first reference signal used by the first cell, and determine the fourth measurement value of the second cell based on the second reference signal used by the second cell; A control unit, configured to, when the continuous time of the comparison result of the third measurement value and the fourth measurement value determined by the determining unit is greater than or equal to a time threshold value, according to the third measurement value performing cell selection, cell reselection or triggering the reporting of measurement results with the fourth measurement value; The time threshold value setting manner includes at least one of the following manners: setting according to the type of the first reference signal used by the first cell and the type of the second reference signal used by the second cell, and setting according to the type of the first reference signal used by the first cell. setting the configuration parameters of the first reference signal and the configuration parameters of the second reference signal; Wherein, the first reference signal includes a common reference signal CRS, and the second reference signal includes a channel state information reference signal CSI-RS; or The first reference signal includes CSI-RS, and the second reference signal includes CRS; or Both the first reference signal and the second reference signal include CSI-RS. 23. The user equipment of claim 22, wherein the user equipment further comprises: a receiving unit, configured to receive the time threshold value notified by the base station; or The control unit is also used to: The time threshold value is preset. 24. The user equipment according to claim 23, wherein the receiving unit is specifically configured to: Receive the time threshold value sent by the base station by broadcasting; or The time threshold value sent by the base station through the radio resource control RRC signaling is received. 25. The user equipment according to claim 23 or 24, wherein the receiving unit is specifically configured to: When the user equipment changes from the connected state to the idle state, the time threshold value notified by the base station is received. 26. The user equipment according to any one of claims 22-24, wherein the user equipment further comprises a processing unit, configured to: The time threshold is quoted in the process of cell selection, cell reselection or triggering the reporting of measurement results. 27. The user equipment according to any one of claims 22-24, wherein the first cell is a serving cell, and the second cell is a neighbor cell. 28. A user equipment, comprising: a determining unit, configured to determine a fifth measurement value of the first cell based on the first reference signal used by the first cell; a control unit, configured to perform cell selection, cell reselection or triggering according to the fifth measurement value when the continuous time of the comparison result between the fifth measurement value and the first threshold value is greater than or equal to a time threshold reporting of measurement results; The time threshold setting method includes at least one of the following methods: setting according to the type of the reference signal of the cell, and setting according to the configuration parameter of the reference signal used by the cell; Wherein, the first reference signal includes a channel state information reference signal CSI-RS. 29. The user equipment according to claim 28, wherein the determining unit is further configured to: determining a sixth measurement value of the second cell based on the second reference signal used by the second cell; The control unit is further configured to: when the continuous time between the comparison result of the fifth measurement value and the first threshold value and the comparison result of the sixth measurement value and the second threshold value is greater than or equal to a time threshold value and performing cell selection, cell reselection or triggering the reporting of measurement results according to the fifth measurement value and the sixth measurement value. 30. The user equipment according to claim 28 or 29, wherein the user equipment further comprises: a receiving unit, configured to receive the time threshold value notified by the base station; or The control unit is further configured to: preset the time threshold value. 31. The user equipment according to claim 30, wherein the receiving unit is specifically configured to: Receive the time threshold value sent by the base station by broadcasting; or The time threshold value sent by the base station through the radio resource control RRC signaling is received. 32. The user equipment according to claim 30, wherein the receiving unit is specifically configured to: When the user equipment changes from the connected state to the idle state, the time threshold value notified by the base station is received. 33. The user equipment according to claim 28 or 29, wherein the user equipment further comprises a processing unit for: The time threshold is quoted in the process of cell selection, cell reselection or triggering the reporting of measurement results.

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