WO2022095819A1

WO2022095819A1 - Cell reselection method, related device, and storage medium

Info

Publication number: WO2022095819A1
Application number: PCT/CN2021/127884
Authority: WO
Inventors: 谢芳
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2020-11-03
Filing date: 2021-11-01
Publication date: 2022-05-12
Also published as: CN114449597A

Abstract

Disclosed in the present application are a cell reselection method, a terminal, a network device, and a storage medium. The method comprises: a terminal receives a first parameter, the first parameter representing a lowest quality requirement for receiving a multicast and broadcast service (MBS) of a terminal; and the received first parameter is utilized and cell reselection is performed; wherein the first parameter satisfies one of the following conditions: the first parameter is for one MBS; the first parameter is for one temporary mobile group identity (TMGI); or the first parameter is commonly used for one group of MBSs or for all MBSs.

Description

Cell reselection method, related equipment and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with the application number of 202011211960.4 and the filing date of November 3, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

technical field

The present application relates to the field of wireless communication, and in particular, to a cell reselection method, apparatus, related equipment and storage medium.

Background technique

In order to effectively utilize mobile network resources, the Multicast and Broadcast Service (MBS) technology is proposed. MBS technology is a technology for transmitting data from one data source to multiple target terminals. The sharing of resources of the network (electrical signal or optical signal) and the access network) improves the utilization of network resources, especially air interface resources.

However, in the related art, for a terminal in an idle state or an inactive state, after the cell reselection is performed, the reception of the MBS by the terminal may be affected.

SUMMARY OF THE INVENTION

In order to solve related technical problems, embodiments of the present application provide a cell reselection method, apparatus, related equipment, and storage medium.

The technical solutions of the embodiments of the present application are implemented as follows:

The embodiment of the present application provides a cell reselection method, which is applied to a terminal, including:

receiving a first parameter; the first parameter represents a minimum quality requirement for the terminal to receive MBS;

Cell reselection is performed using the received first parameter; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a Temporary Mobile Group Identity (TMGI);

The first parameter is common to a group of MBSs or all MBSs.

In the above solution, the use of the first parameter to perform cell reselection includes:

Determine the reselection ranking of the serving cell and neighboring cells;

Cell reselection is performed using the first parameter and the reselection ranking of the serving cell and the neighboring cell.

In the above solution, the cell reselection is performed using the first parameter and the reselection ranking of the serving cell and the neighboring cell, including:

Determine a cell whose cell quality meets the requirements of the first parameter from the serving cell and neighboring cells;

The cell with the highest reselection ranking is selected from the cells whose cell quality meets the requirements of the first parameter, and cell reselection is performed.

In the above solution, the determining the reselection ranking of the serving cell and the neighboring cell includes:

Determine the R value for the reselection ranking of the serving cell and neighbor cells.

In the above solution, the fifth parameter is used to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; the fifth parameter represents the offset of the MBS.

In the above scheme, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

In the above solution, the use of the fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell includes one of the following:

In the case where the fifth parameter is the offset for one MBS, use the offsets of the M MBSs to determine the R value of the reselection ranking of the serving cell and/or the neighbor cell; or use the R value that satisfies the fourth condition The offset of an MBS, which determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for one TMGI, use the offsets of N TMGIs to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; or use the R value that satisfies the fifth condition An offset of TMGI, which determines the R value of the reselection ranking of the serving cell and/or neighboring cells; N is an integer greater than or equal to 1; N represents the TMGI corresponding to the MBS that the terminal is interested in or wants to receive number;

In the case where the fifth parameter is an offset shared by all MBSs, use the offsets of Q MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the offset of one MBS Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for a group of MBSs, use the offsets of the P MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the seventh condition that satisfies The offset of one MBS of , determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; P is an integer greater than or equal to 1; P represents the number of MBSs that the terminal is interested in or wants to receive .

In the above scheme, the method also includes:

The fifth parameter is received.

In the above solution, the fifth parameter is received through a system message.

In the above solution, the first parameter is received through a system message.

The embodiment of the present application also provides a cell reselection method, which is applied to network equipment, including:

Send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

In the above scheme, the method also includes:

A fifth parameter is sent to the terminal; the fifth parameter represents the offset of the MBS.

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

In the above solution, the fifth parameter is sent to the terminal through a system message.

In the above solution, the first parameter is sent to the terminal through a system message.

The embodiment of the present application also provides a cell reselection method, which is applied to a terminal, including:

receiving a fifth parameter; the fifth parameter represents the offset of the MBS;

Using the received fifth parameter, determine the R value of the reselection ranking of the serving cell and/or the neighboring cell;

Use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

In the above scheme, the method also includes:

The cell reselection is performed by using the R value of the reselection ranking of the serving cell and the neighboring cell and in combination with the received first parameter.

In the above scheme, the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

In the above scheme, the cell reselection is performed using the R value of the reselection ranking of the serving cell and the neighboring cell, combined with the received first parameter, including:

A cell with a high R value is selected from the cells whose cell quality meets the requirements of the first parameter, and cell reselection is performed.

Send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

In the above scheme, the method also includes:

Send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS.

In the above solution, the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

The embodiment of the present application also provides a cell reselection device, including:

a first receiving unit, configured to receive a first parameter; the first parameter represents a minimum quality requirement for the terminal to receive MBS;

The first processing unit is configured to use the received first parameter to perform cell reselection; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

A first sending unit, configured to send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

a second receiving unit, configured to receive a fifth parameter; the fifth parameter represents the offset of the MBS;

The second processing unit is configured to use the received fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; and use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; Wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

The second sending unit is configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

The embodiment of the present application further provides a terminal, including: a first communication interface and a first processor; wherein,

the first communication interface is configured to receive a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the first processor is configured to use the received first parameter to perform cell reselection; wherein , the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs;

or,

The first communication interface is configured to receive a fifth parameter; the fifth parameter represents the offset of the MBS; the first processor is configured to use the received fifth parameter to determine a serving cell and/or a neighboring cell The R value of the reselection ranking; and the R value of the reselection ranking of the serving cell and the neighboring cell is used to carry out cell reselection; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to all MBSs.

The embodiment of the present application also provides a network device, including: a second communication interface and a second processor; wherein,

The second communication interface is configured to send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs;

or,

The second communication interface is configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Embodiments of the present application further provide a terminal, including: a first processor and a first memory configured to store a computer program that can be run on the processor,

Wherein, the first processor is configured to execute the steps of any method on the terminal side when running the computer program.

Embodiments of the present application further provide a network device, including: a second processor and a second memory configured to store a computer program that can be executed on the processor,

Wherein, the second processor is configured to execute the steps of any method on the network device side when running the computer program.

Embodiments of the present application further provide a storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements steps of any method on the terminal side or implements steps of any method on the network device side.

In the cell reselection method, device, related equipment, and storage medium provided by the embodiments of this application, the network equipment sends a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies the following conditions One: the first parameter is for one MBS; the first parameter is for one TMGI; the first parameter is common for a group of MBS or all MBSs; the terminal uses the received first parameter , to perform cell reselection, the network device instructs the terminal to receive the minimum quality requirements of MBS, and the minimum quality requirements of the received MBS can reflect the quality of service (QoS) requirements or priorities of different MBS services (such as high QoS requirements or priorities). The quality requirements corresponding to high services are also high), so a new reselection criterion is used to implement cell reselection based on the MBS that the terminal is interested in, so that the terminal can receive the interested MBS in the idle state or inactive state. service, or enable the terminal to receive the MBS service as soon as possible after entering the connected state, and at the same time ensure that the quality of the cell reselected by the terminal is sufficient to meet the basic requirements for receiving the MBS service. On the other hand, the network device sends a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein, the fifth parameter satisfies one of the following conditions: the fifth parameter is an offset for one MBS The fifth parameter is an offset for one TMGI; the fifth parameter is a common offset for a group of MBS or all MBSs; the terminal uses the received fifth parameter to determine the serving cell and/or or the R value of the reselection ranking of the neighboring cell; and use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; the terminal uses the received fifth parameter to determine the serving cell and/or the neighboring cell. The R value of the ranking is selected, and the cell reselection based on the MBS that the terminal is interested in is implemented by defining the offset of the MBS that can reflect the QoS requirements or priorities of different MBS services and defining a new R value calculation method. When the terminal enters the connected state, the interested MBS service can be received, or the terminal can receive the MBS service as soon as possible after entering the connected state.

Description of drawings

1 is a schematic flowchart of a first method for cell reselection according to an embodiment of the present application;

2 is a schematic flowchart of a second cell reselection method according to an embodiment of the present application;

3 is a schematic flowchart of a third cell reselection method according to an embodiment of the present application;

4 is a schematic flowchart of a fourth cell reselection method according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a first cell reselection apparatus according to an embodiment of the present application;

6 is a schematic structural diagram of a second cell reselection apparatus according to an embodiment of the present application;

7 is a schematic structural diagram of a third cell reselection apparatus according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a fourth cell reselection apparatus according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application;

10 is a schematic structural diagram of a network device according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a cell reselection system according to an embodiment of the present application.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

Because in the Long Term Evolution (LTE) system, for MBS (also called MBS service), on the air interface, a transmission method is the Multicast Broadcast Single Frequency Network (MBSFN) method, and this method of deploying MBS is less flexible. , and wastes resources. Therefore, in the fifth-generation mobile communication technology (5G) system, MBS deployment is likely not to be carried out based on MBSFN, that is, the support for MBS is cell-based. Specifically, the base station determines to use point-to-point (PTP) or point-to-multipoint (PTM) to transmit MBS data packets over the air interface according to information such as the number of user equipments (UEs) receiving MBS in the cell. The service transmission of MBS supports not only terminals in connected state, but also terminals in idle state (can be expressed as idle in English) or inactive state (can be expressed as inactive in English), that is, terminals can receive MBS without entering the connected state.

In the related art, the terminal in the idle state or the inactive state performs cell reselection based on the measured reference signal received power (RSRP), and does not consider the situation that the cell supports MBS, so the terminal may select or reselect to a Cells that support MBS, which will affect the terminals in the idle state or inactive state to receive MBS; in this case, for the terminals that enter the connected state and then receive MBS, they also need to further switch to the cell that supports MBS to receive MBS, increase This reduces the delay for terminals to perform MBS and affects service experience.

Based on this, in various embodiments of the present invention, cell reselection is performed based on the MBS of interest to the terminal. Specifically, there are two implementation methods:

The first way is to implement cell reselection based on the MBS that the terminal is interested in by defining a new reselection criterion.

The second way is to implement cell reselection based on the MBS that the terminal is interested in by defining a new R value calculation way.

The two implementation manners are described in detail below.

For the first manner, an embodiment of the present application provides a cell reselection method, which is applied to a terminal. As shown in FIG. 1 , the method includes:

Step 101: Receive a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive MBS;

Step 102: Use the received first parameter to perform cell reselection; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, in practical application, the terminal may be referred to as UE, user, or the like.

In step 101, in practical application, the network side can send the first parameter through a system message (such as SIB1 or SIB4; another example is to define a new system message for MBS, etc.), that is, broadcast the first parameter through the system; based on this, the described The terminal may receive the first parameter through a system message.

When the received first parameter includes the first parameter of each MBS, that is, the first parameter is based on the MBS granularity, that is, when each MBS (which can be expressed as per MBS in English) corresponds to a first parameter, The network side sends the first parameter of each MBS, and the first parameter of each MBS may be the same or different. Exemplarily, assuming that one cell supports 4 MBSs, the network side sends 4 first parameters, and each first parameter corresponds to one MBS.

When the received first parameter includes the first parameter of each TMGI, that is, the first parameter is of TMGI granularity, that is, when each TMGI (which can be expressed as per TMGI in English) corresponds to a first parameter, The network side sends the first parameter of each TMGI, and the first parameter of each TMGI may be the same or different. Exemplarily, assuming that one cell contains two TMGIs, the network side sends two first parameters, and each first parameter corresponds to one TMGI.

When the received first parameter includes the first parameter shared by all MBSs, that is, the first parameter is shared by all MBSs, the network side only sends one first parameter. Exemplarily, assuming that one cell supports three MBSs, the network side only sends one first parameter, and one first parameter corresponds to three MBSs.

The first parameter actually represents the minimum quality requirement for the terminal to receive MBS in a cell supporting MBS.

That is to say, the cell corresponding to the first parameter is a cell supporting MBS, and the terminal in this cell receives the minimum quality requirement of MBS.

In practical application, the expression form of the first parameter may be an RSRP threshold value or a reference signal received quality (RSRQ) threshold value or a Signal to Interference plus Noise Ratio (SINR, Signal to Interference plus Noise Ratio) threshold value, etc. , or a combination of these thresholds, that is, the expression form of the first parameter may be at least one of an RSRP threshold, an RSRQ threshold, and an SINR threshold.

The first parameters of different granularities actually reflect the QoS requirements or priorities of different MBS services (for example, services with high QoS requirements or high priorities have high quality requirements), so that the terminal can select The cell with good quality and capable of providing the MBS that the terminal is interested in or wants to receive is reselected.

In an embodiment, the specific implementation of step 102 may include:

Determine the reselection ranking of the serving cell and neighboring cells (in English, it can be expressed as ranking);

Specifically, determining a cell whose cell quality meets the requirements of the first parameter from the serving cell and neighboring cells;

A cell with a high reselection ranking (ie, the highest) is selected from the cells whose cell quality meets the requirements of the first parameter, and cell reselection is performed.

Wherein, in the case where the first parameter takes MBS as the granularity, that is, when the received first parameter includes the first parameter with MBS as the granularity, the terminal may use the MBS that is of interest in the cell supporting MBS or the desired MBS. The MBS to be received (also referred to as the desired received) is used to determine whether the cell quality of the cell supporting MBS meets the requirements of the first parameter; exemplarily, it is assumed that cell 1 contains 3 MBSs, namely MBS1, MBS2, and MBS3; The MBS that the terminal is interested in or wants to receive in cell 1 are MBS1 and MBS3; when the cell quality of cell 1 meets the first parameter requirement corresponding to at least one of MBS1 and MBS3, the terminal considers cell 1 as a cell A cell whose quality meets the requirements of the first parameter, that is, cell 1 is a candidate cell for cell reselection.

In the case where the first parameter takes TMGI as the granularity, that is, when the received first parameter includes the first parameter with TMGI as the granularity, the terminal can use the TMGI corresponding to the MBS that the cell supporting MBS is interested in, or The TMGI corresponding to the MBS you want to receive is used to determine whether the cell quality of the cell supporting the MBS meets the requirements of the first parameter; exemplarily, it is assumed that cell 2 contains 4 TMGIs, namely TMGI1, TMGI2, TMGI3, and TMGI4; The TMGI corresponding to the MBS that cell 2 is interested in or the MBS that it wants to receive are TMGI2 and TMGI3; when the cell quality of cell 2 meets the first parameter requirement corresponding to at least one of TMGI2 and TMGI3, the terminal considers that cell 2 is a A cell whose cell quality meets the requirements of the first parameter, that is, cell 2 is a candidate cell for cell reselection.

In the case where the first parameter takes all MBSs as the granularity, that is, when the received first parameter includes the first parameter with all the MBSs as the granularity, the terminal can use the MBSs that are interested in the cell that supports MBS or the desired MBSs. The MBS to be received is used to determine whether the cell quality of the cell supporting MBS meets the requirements of the first parameter; for example, it is assumed that cell 3 contains 3 MBSs, namely MBS1, MBS2, and MBS3; and the MBS that the terminal is interested in in cell 3 Or the MBS to be received is MBS1; since three MBSs in cell 3 share one first parameter, as long as the cell quality of cell 3 meets the requirements of the first parameter, the terminal considers cell 3 as the cell quality that meets the first parameter. The cell required by the parameters, that is, cell 3, is a candidate cell for cell reselection.

In the case where the first parameter takes a group of MBS as the granularity, that is, when the received first parameter includes the first parameter with a group of MBS, the terminal can use the MBS that is of interest in the cell supporting MBS or the desired MBS. The MBS to be received is used to determine whether the cell quality of the cell supporting MBS meets the requirements of the first parameter; exemplarily, it is assumed that cell 4 includes 4 MBSs, namely MBS1, MBS2, MBS3, and MBS4; MBS1 and MBS2 are a group, MBS3 and MBS4 are a group, and the MBS that the terminal is interested in or wants to receive in cell 4 is MBS1; because MBS1 and MBS2 in cell 4 share a first parameter, and MBS3 and MBS4 share a first parameter, so at this time only If the cell quality of cell 4 meets the first parameter requirement corresponding to MBS1, the terminal considers that cell 4 is a cell whose cell quality meets the first parameter requirement, that is, cell 4 is a candidate cell for cell reselection.

Here, it should be noted that the cell quality meeting the minimum quality requirement means that the terminal can receive MBS in the cell only when the cell quality measured by the terminal is higher than or equal to the minimum quality of the received MBS.

When determining the candidate cell of the reselection cell, if a cell supports MBS, but the supported MBS is not the MBS that the terminal is interested in or wants to receive, at this time, a related technology can be used to perform cell reselection.

In practical application, when determining the reselection ranking of the serving cell and the neighboring cell, the R criterion can be used.

Based on this, in an embodiment, the determining the reselection ranking of the serving cell and the neighboring cell includes:

Here, in practical application, the R value of the reselection ranking of the serving cell and the neighboring cell may be determined by using a related technology. Among them, the R value can be understood as a reselection ranking parameter of a cell.

Specifically, the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined by using the second parameter, the third parameter and the fourth parameter; the second parameter represents the signal quality of the cell (neighboring cell or serving cell); The third parameter represents the hysteresis value; the fourth parameter represents the offset of the adjacent cell.

More specifically, the following formula is used to determine the R value of the reselection ranking of the serving cell and neighboring cells:

R _s =Q _meas,s +Q _hyst -Qoffset _temp (1)

R _n =Q _meas,n -Qoffset-Qoffset _temp (2)

Among them, R _s represents the R value of the reselection ranking of the serving cell; Q _meas,s represents the signal quality of the serving cell (such as the RSRP measurement of the serving cell); Q _meas,n represents the signal quality of the neighboring cell (such as the RSRP measurement); Q _hyst represents the hysteresis value; Qoffset represents the offset; Qoffset _temp represents the temporary offset.

Here, for the values of Qoffset and Qoffset _temp , reference may be made to the related art, and details are not repeated here.

In practical application, a new R value calculation method can also be defined, that is, the R value of the same-frequency or different-frequency same-rank reselection is calculated through the modified mechanism.

Specifically, using the fifth parameter, the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined.

More specifically, the second parameter, the third parameter, the fourth parameter and the fifth parameter are used to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; the fifth parameter represents the offset of the MBS.

R _s =Q _meas,s +Q _hyst -Qoffset _temp +Qoffset _mbs (3)

R _n =Q _meas,n -Qoffset-Qoffset _temp +Qoffset _mbs (4)

Among them, Qoffset _mbs represents the offset of MBS.

Here, for the fifth parameter, it actually represents the fifth parameter that the terminal is in a cell supporting MBS.

The offset of the MBS can be understood as the offset of the MBS service. Specifically, it can be understood as the offset of the MBS service relative to the benchmark. When selecting the benchmark, the priority or QoS of the MBS can be considered. The broadcast service is used as the benchmark, that is, the offset of the MBS is the offset of an MBS service relative to the unicast service; for another example, a multicast service can be set as the benchmark, and the offset of the MBS is the offset of an MBS service relative to the MBS. The offset of the business.

In one embodiment, the fifth parameter may satisfy one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, when the fifth parameter is an offset for one MBS, the terminal may select the offset of at least one MBS, and use the selected offset of at least one MBS to determine the serving cell and/or the neighboring cell The R-value of the reselection ranking. Specifically, when the fifth parameter takes MBS as the granularity, that is, when each MBS corresponds to an offset, and the MBS that satisfies the first condition (that is, the terminal is interested in the MBS of the cell that supports MBS or the terminal is in the supporting MBS) The MBS that the cell of the MBS wants to receive (it can be all the interested MBSs or the MBSs that it wants to receive in the MBS cell, or it can be selected from all the interested MBSs or the MBSs that it wants to receive in the MBS cell that satisfies the When the preset condition (such as the MBS that satisfies a certain QoS or service priority) is M (that is, M represents the number of MBSs that the terminal is interested in or wants to receive), the number of the MBS used to calculate the R value. The five parameters include the offsets of M MBSs; M is an integer greater than or equal to 1, that is, the MBS offsets of the cell are correspondingly increased by M offsets Qoffset _mbs1, Qoffset _mbs2..., Qoffset _mbsM , that is, , Qoffset _mbs =Qoffset _mbs1 +Qoffset _mbs2 +...+Qoffset _mbsM in the formula; in other words, in the case that the fifth parameter is an offset for one MBS, that is, each MBS corresponds to a fifth parameter, The terminal uses the offsets of the M MBSs to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell. Of course, in order to avoid causing an excessive offset to the R value, which will cause the UE to reselect to a cell with a larger quality gap compared with the cell with the best quality, and cause larger neighbor interference, it is also possible to use only these MBSs. One of the offsets is used as the fifth parameter used to calculate the R value; that is, the offset of one MBS that satisfies the fourth condition (such as the maximum value of the offsets of these MBSs, etc.) is used , and determine the R value of the reselection ranking of the serving cell and/or the neighboring cell.

When the fifth parameter is an offset for one TMGI, the terminal may select the offset of at least one TMGI, and use the selected offset of at least one TMGI to determine the re-location of the serving cell and/or the neighboring cell. Choose the R value of the ranking. Specifically, when the fifth parameter takes TMGI as the granularity, that is, when each TMGI corresponds to an offset, and the TMGI that satisfies the second condition (that is, the TMGI corresponding to the MBS that the terminal is interested in in the cell supporting MBS or the terminal The MBS that the cell that supports MBS wants to receive (it can be all the interested MBSs or the MBSs that you want to receive in the MBS cell, or it can be selected from all the interested MBSs or the MBSs you want to receive in the MBS cell The TMGIs corresponding to the MBSs that meet the preset conditions (such as satisfying a certain QoS or service priority)) are N (that is, N represents the number of TMGIs corresponding to the MBSs that the terminal is interested in or wants to receive) , the fifth parameter used in calculating the R value includes the offsets of N TMGIs; N is an integer greater than or equal to 1, that is, the MBS offset of the cell corresponds to an increase of N offsets Qoffset _{mbs1 ,} Qoffset _mbs2..., Qoffset _mbsN , that is, Qoffset _mbs =Qoffset _mbs1 +Qoffset _mbs2 +...+Qoffset _mbsN in the formula; in other words, in the case that the fifth parameter is the offset for one TMGI, use The offsets of the N TMGIs determine the R value of the reselection ranking of the serving cell and/or neighboring cells. Of course, in order to avoid causing too large an offset to the R value, thus causing the terminal to reselect to a cell with a larger quality gap compared with the cell with the best quality, and causing larger adjacent cell interference, it is also possible to use only these TMGIs. One of the offsets is used as the fifth parameter used to calculate the R value; that is, the offset of a TMGI that satisfies the fifth condition (such as the maximum value of the offsets of the MBS of these TMGIs) is used. etc.), determine the R value of the reselection ranking of the serving cell and/or the neighboring cell.

When the fifth parameter is the offset of the MBS shared by all the MBSs, the terminal may use the offset of at least one MBS to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell. Specifically, when the fifth parameter takes the offset shared by all MBSs in the cell as the granularity, that is, the offset shared by all MBSs, and the MBS that satisfies the third condition (that is, the interest of the terminal in the cell supporting MBS) The MBS or the MBS that the terminal wants to receive in the cell that supports MBS (it can be all the MBSs of interest or the MBSs that the terminal wants to receive in the MBS cell, or it can be all the MBSs of interest or the MBSs that the terminal wants to receive in the MBS cell When the number of MBSs selected from the MBS that meet the preset conditions (such as satisfying a certain QoS or service priority) is Q (that is, Q represents the number of MBS services that the terminal is interested in or wants to receive), The fifth parameter used when calculating the R value includes the offsets of Q MBSs (here, the offsets of MBSs refer to the offsets shared by all MBSs); Q is an integer greater than or equal to 1, that is, Qoffset in the formula _mbs = Q*Qoffset _mbs (representing an offset common to all MBSs); in other words, when the fifth parameter is an offset common to all MBSs, using the offsets of Q MBSs, the service is determined The R value of the reselection ranking of the cell and/or neighbor cells. Of course, in order to avoid causing too large an offset to the R value, thus causing the UE to reselect to a cell with a larger quality gap compared with the cell with the best quality, and causing larger neighbor interference, only one MBS can be used. The offset (here, the offset of the MBS refers to the offset shared by all the MBSs) is used as the fifth parameter used to calculate the R value; that is, the fifth parameter is the offset condition shared by all the MBSs In the case of , the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined by using an MBS offset.

When the fifth parameter is an offset for a group of MBSs, the terminal may select an offset of at least one group of MBSs, and use the selected offset of at least one group of MBSs to determine the serving cell and/or neighbor The R-value of the reselection ranking of the cell. Specifically, when the fifth parameter takes a group of MBS as the granularity, that is, when each group of MBS corresponds to an offset, and the MBS that satisfies the sixth condition (that is, the TMGI corresponding to the MBS that the terminal is interested in in the cell supporting MBS) Or the MBS that the terminal wants to receive in the cell that supports MBS (it can be all the interested MBSs or the MBSs that the terminal wants to receive in the MBS cell, or it can be all the interested MBSs or the MBSs that the terminal wants to receive in the MBS cell. When the selected MBSs that meet the preset conditions (such as satisfying a certain QoS or service priority) are P (that is, P represents the number of MBSs that the terminal is interested in or wants to receive), the R value is calculated. The fifth parameter used includes the offsets of P groups of MBSs; P is an integer greater than or equal to 1, that is, the MBS offsets of the cell are correspondingly increased by P offsets Qoffset _mbs1, Qoffset _{mbs2... .} _{_} _{_} _{_} _{_} _{_} The offset of , determines the R value of the reselection ranking of the serving cell and/or neighboring cells. Here, when the MBS that the terminal is interested in or wants to receive is in a different group, the offset of the corresponding group of MBSs needs to be used to calculate Qoffset _mbs in the formula. When the MBS that the terminal is interested in or wants to receive is in the When the groups are the same, the offset of the group of MBSs is used to calculate Qoffset _mbs in the formula; exemplarily, it is assumed that cell 4 includes 4 MBSs, which are respectively MBS1, MBS2, MBS3, and MBS4; MBS1 and MBS2 are a group, corresponding to The offset is Qoffset _mbs-1 , a group of MBS3 and MBS4, and the corresponding offset is Qoffset _mbs-2 ; if the MBS that the terminal is interested in in cell 4 or the MBS it wants to receive is MBS1 and MBS3, then in the formula Qoffset _mbs =Qoffset _mbs-1 +Qoffset _mbs-2 ; if the MBS that the terminal is interested in or wants to receive in cell 4 is MBS1 and MBS2, then Qoffset _mbs =2*Qoffset _mbs-1 in the formula; of course, In order to avoid causing a large offset to the R value, causing the UE to reselect to a cell with a large quality gap compared with the cell with the best quality, and causing a large neighbor interference, it is also possible to only use the offset of these groups of MBS. One of the offsets is used as the fifth parameter used to calculate the R value; that is, the offsets of a group of MBSs that satisfy the seventh condition (such as the maximum value of the offsets of these groups of MBSs, etc.) are used. ) to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell.

In practical application, the fifth parameter can be obtained from the network side.

Based on this, in one embodiment, the method may further include:

The fifth parameter is received.

Here, the network side can send the fifth parameter through a system message, that is, broadcast the fifth parameter through the system, so that the terminal can receive the Fifth parameter.

In practical application, the R value of the reselection ranking may also be referred to as the R value of intra-frequency or inter-frequency and same-priority reselection.

After determining the R value of the reselection ranking of the serving cell and neighboring cells, among the cells whose cell quality meets the requirements of the first parameter, select the cell with the highest R value among the cells that support the MBS that the terminal is interested in or wants to receive, and perform Cell reselection. Specifically, the R value can be sorted from high to low, and the first cell that supports the MBS that the terminal is interested in is selected to perform cell reselection.

Here, in practical application, when the terminal has multiple MBSs that the terminal is interested in or wants to receive, it can be selected from the cells whose cell quality meets the requirements of the first parameter and supports all the MBSs that the terminal is interested in or wants to receive. The cell with the highest R value is reselected.

When there is no cell whose quality meets the requirements of the first parameter and supports all the MBS cells that the terminal is interested in or wants to receive, the quality of the cell can meet the requirements of the first parameter, and supports the highest priority of the terminal (that is, the terminal feels the most Among the cells of the MBS that you are interested in or most want to receive), the cell with the highest R value is selected for reselection.

When there is no cell whose quality meets the requirements of the first parameter and supports all MBSs that the terminal is interested in or wants to receive, it is also possible to select a cell whose quality meets the requirements of the first parameter and can support the cells that the terminal is interested in or wants to receive. The cell with the most types of received MBS performs cell reselection; when there are multiple cells whose cell quality meets the requirements of the first parameter and can support the cell with the most types of MBS that the terminal is interested in or wants to receive, the highest R value can be selected. cell for reselection.

Correspondingly, the embodiments of the present application also provide a cell reselection method, which is applied to a network device (specifically, a base station), including:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, the first parameter is used for the terminal to perform cell reselection.

Here, in practical application, the network device needs to determine the first parameter first. Wherein, the network device may determine the first parameter as required.

In an embodiment, the first parameter is sent to the terminal through a system message.

In one embodiment, the method may further include:

A fifth parameter is sent to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell.

Wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

In an embodiment, the fifth parameter is sent to the terminal through a system message.

In practical application, the network device needs to determine the fifth parameter first. Wherein, the network device may determine the fifth parameter as required.

An embodiment of the present application provides a method for cell reselection, as shown in FIG. 2 , the method includes:

Step 201: The network device sends a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs;

Step 202: The terminal uses the received first parameter to perform cell reselection.

Here, it should be noted that the specific processing procedures of the network device and the terminal have been described in detail above, and will not be repeated here.

In the cell reselection method provided in this embodiment of the present application, the network device sends a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions: the first parameter is for one MBS; the first parameter is for one TMGI; the first parameter is shared for a group of MBS or all MBSs; the terminal uses the received first parameter to perform cell reselection, the network device Instruct the terminal to receive the minimum quality requirements of the MBS, and the minimum quality requirements of the received MBS can reflect the QoS requirements or priorities of different MBS services, so that new reselection criteria are adopted to achieve based on what the terminal is interested in or wants to receive. The MBS performs cell reselection, which enables the terminal to receive the MBS services that it is interested in or wants to receive when it is in the idle state or inactive state, or enables the terminal to receive the MBS service as soon as possible after entering the connected state, while ensuring that the terminal can receive the MBS service as soon as possible. The quality of the reselected cell is sufficient to meet the basic requirements for receiving MBS services.

For the second method, an embodiment of the present application provides a cell reselection method, which is applied to a terminal. As shown in FIG. 3 , the method includes:

Step 301: Receive a fifth parameter; the fifth parameter represents the offset of the MBS;

Step 302: Using the received fifth parameter, determine the R value of the reselection ranking of the serving cell and/or the neighboring cell;

Step 303: Use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the terminal may receive the fifth parameter through a system message.

In practical application, in step 303, the terminal may select a cell with a high R value (that is, select a cell with the highest reselection ranking), and perform cell reselection.

In practical application, the R value can be used directly for cell reselection, that is, by performing steps 301 to 303, to perform cell reselection; and the cell reselection can also be performed in combination with the quality requirements of the MBS.

Based on this, in one embodiment, the method may further include:

The cell reselection is performed by using the R value of the reselection ranking of the serving cell and the neighboring cell and in combination with the first parameter.

Wherein, in practical application, the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

In one embodiment, the cell reselection is performed using the R value of the reselection ranking of the serving cell and the neighboring cell and in combination with the received first parameter, including:

A cell with a high R value is selected from the cells whose cell quality meets the requirements of the first parameter (that is, the cell with the highest reselection ranking is selected), and cell reselection is performed.

In an embodiment, the terminal may receive the first parameter through a system message.

It should be noted that: in the second method, the terminal determines the cell whose cell quality meets the requirements of the first parameter, determines the R value, and uses the R value to perform cell reselection. The specific processing process can refer to the description in the first method , which will not be repeated here.

Send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; wherein, the The fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the fifth parameter is sent to the terminal through a system message.

In one embodiment, the method may further include:

A first parameter is sent to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the first parameter is used for the terminal to perform cell reselection.

Wherein, in an embodiment, the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

An embodiment of the present application provides a method for cell reselection, as shown in FIG. 4 , the method includes:

Step 401: The network device sends a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell ; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs;

Step 402: the terminal uses the received fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell;

Step 403: The terminal performs cell reselection by using the R value of the reselection ranking of the serving cell and the neighboring cell.

In the cell reselection method provided by the embodiment of the present application, the network device sends a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein the fifth parameter satisfies one of the following conditions: the fifth parameter is the offset for one MBS; the fifth parameter is the offset for one TMGI; the fifth parameter is the offset for a group of MBSs or common to all MBSs; the terminal uses the received fifth parameter, determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; and use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; the terminal uses the received fifth parameter to determine the serving cell and/or the R value of the reselection ranking of neighboring cells, by defining a new R value calculation method based on the offset of the MBS that can reflect the QoS requirements or priorities of different MBS services, based on what the terminal is interested in or wants to receive The mobile terminal can receive the MBS service of interest or want to receive when the terminal is in the idle state or inactive state, or enable the terminal to receive the MBS service as soon as possible after entering the connected state, and at the same time ensure the The quality of the cell reselected by the terminal is sufficient to meet the basic requirements for receiving MBS services.

For the above-mentioned first cell reselection method, in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application further provides a cell reselection apparatus, which is set on the terminal. As shown in FIG. 5 , the apparatus includes:

The first receiving unit 501 is configured to receive a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive MBS;

The first processing unit 502 is configured to use the received first parameter to perform cell reselection; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the first processing unit 502 is configured as:

Determine the reselection ranking of the serving cell and neighboring cells;

In an embodiment, the first processing unit 502 determines a cell whose cell quality meets the requirements of the first parameter from the serving cell and the neighboring cells;

In one embodiment, the first processing unit 502 is configured as:

Wherein, in an embodiment, the first processing unit 502 uses a fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; the fifth parameter represents the offset of the MBS.

In an embodiment, when the fifth parameter is an offset for one MBS, the first processing unit 502 uses the offsets of the M MBSs to determine the overlap of the serving cell and/or the neighboring cell. The R value of the selection ranking; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one TMGI, the first processing unit 502 uses the offsets of N TMGIs to determine the value of the serving cell and/or the neighbor cell. The R value of the reselection ranking; N is an integer greater than or equal to 1; N represents the number of TMGIs corresponding to MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset shared by all MBSs, the first processing unit 502 uses the offsets of Q MBSs to determine the The R value of the reselection ranking; Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for a group of MBSs, the first processing unit 502 uses the offsets of the P MBSs to determine the value of the serving cell and/or the neighbor cell. The R value of the reselection ranking; P represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one MBS, the first processing unit 502 determines the serving cell and/or the offset of one MBS that satisfies the fourth condition The R-value of the reselection ranking of neighbor cells.

In an embodiment, when the fifth parameter is an offset for one TMGI, the first processing unit 502 determines the serving cell and/or the offset of one TMGI that satisfies the fifth condition. The R-value of the reselection ranking of neighbor cells.

In an embodiment, when the fifth parameter is an offset shared by all MBSs, the first processing unit 502 uses the offset of one MBS to determine the reselection of a serving cell and/or a neighboring cell. R-value for ranking.

In an embodiment, when the fifth parameter is an offset for a group of MBSs, the first processing unit 502 uses the offset of one MBS that satisfies the seventh condition to determine the serving cell and/or or the R-value of the reselection ranking of neighboring cells.

In an embodiment, the first receiving unit 501 is further configured to receive the fifth parameter.

Wherein, in one embodiment, the first receiving unit 501 receives the fifth parameter through a system message.

In an embodiment, the first receiving unit 501 receives the first parameter through a system message.

In practical application, the first receiving unit 501 may be implemented by a communication interface in the cell reselection apparatus; the first processing unit 502 may be implemented by a processor in the cell reselection apparatus in combination with the communication interface.

For the above-mentioned first cell reselection method, in order to implement the method on the network device side in the embodiment of the present application, the embodiment of the present application further provides a cell reselection apparatus, which is set on the network device. As shown in FIG. 6 , the apparatus include:

The first sending unit 601 is configured to send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, in an embodiment, as shown in FIG. 6 , the apparatus may further include: a first determining unit 602 configured to determine the first parameter.

In an embodiment, the first sending unit 601 is further configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine The R value of the reselection ranking of the serving cell and/or neighbor cells.

Wherein, the first determining unit 602 is further configured to determine a fifth parameter.

In an embodiment, the first sending unit 601 sends the fifth parameter to the terminal through a system message.

In an embodiment, the first sending unit 601 sends the first parameter to the terminal through a system message.

In practical application, the first sending unit 601 may be implemented by a communication interface in the cell reselection apparatus; the first determining unit 602 may be implemented by a processor in the cell reselection apparatus in combination with the communication interface.

For the above-mentioned second cell reselection manner, in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application further provides a cell reselection apparatus, which is set on the terminal. As shown in FIG. 7 , the apparatus includes:

The second receiving unit 701 is configured to receive a fifth parameter; the fifth parameter represents the offset of the MBS;

The second processing unit 702 is configured to use the received fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; and use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection ; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the second receiving unit 701 receives the fifth parameter through a system message.

In an embodiment, when the fifth parameter is an offset for one MBS, the second processing unit 702 uses the offsets of the M MBSs to determine the overlap of the serving cell and/or the neighboring cell. The R value of the selection ranking; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one TMGI, the second processing unit 702 uses the offsets of N TMGIs to determine the overlap of the serving cell and/or the neighboring cell. R value of the selection ranking; N is an integer greater than or equal to 1; N represents the number of TMGIs corresponding to MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset shared by all MBSs, the second processing unit 702 uses the offsets of the Q MBSs to determine the overlap of the serving cell and/or the neighboring cell. The R value of the selection ranking; Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for a group of MBSs, the second processing unit 702 uses the offsets of the P MBSs to determine the The R value of the reselection ranking; P represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one MBS, the second processing unit 702 uses the offset of one MBS that satisfies the fourth condition to determine the serving cell and/or The R-value of the reselection ranking of neighbor cells.

In an embodiment, in the case that the fifth parameter is an offset for one TMGI, the second processing unit 702 determines the serving cell and/or the offset of one TMGI that satisfies the fifth condition. The R-value of the reselection ranking of neighbor cells.

In one embodiment, when the fifth parameter is an offset shared by all MBSs, the second processing unit 702 uses the offset of one MBS to determine the reselection of the serving cell and/or the neighboring cell. R-value for ranking.

In an embodiment, when the fifth parameter is an offset for a group of MBSs, the second processing unit 702 uses the offset of one MBS that satisfies the seventh condition to determine the serving cell and/or or the R-value of the reselection ranking of neighboring cells.

In an embodiment, the second receiving unit 701 is further configured to receive a first parameter; the first parameter represents a minimum quality requirement for the terminal to receive MBS;

The second processing unit 702 is configured to use the R value of the reselection ranking of the serving cell and the neighboring cell, and combine the received first parameter to perform cell reselection.

Wherein, in an embodiment, the second processing unit 702 is configured as:

In an embodiment, the second receiving unit 701 receives the first parameter through a system message.

In practical application, the second receiving unit 701 may be implemented by a communication interface in the cell reselection apparatus; the second processing unit 702 may be implemented by a processor in the cell reselection apparatus in combination with the communication interface.

For the above-mentioned second cell reselection manner, in order to implement the method on the network device side in the embodiment of the present application, the embodiment of the present application further provides a cell reselection device, which is set on the network device. As shown in FIG. 8 , the device include:

The second sending unit 801 is configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine the reselection ranking of the serving cell and/or the neighboring cell The R value; wherein, the fifth parameter satisfies one of the following conditions:

the fifth parameter is for one MBS;

The fifth parameter is for a TMGI;

The fifth parameter is common to a group of MBSs or all MBSs.

Wherein, in an embodiment, as shown in FIG. 8 , the apparatus may further include: a second determining unit 802 configured to determine the fifth parameter.

In an embodiment, the second sending unit 801 sends the fifth parameter to the terminal through a system message.

In an embodiment, the second sending unit 801 is further configured to send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the first parameter is used for the terminal to perform Cell reselection.

Wherein, in an embodiment, the second determining unit 802 is further configured to determine the first parameter.

In an embodiment, the second sending unit 801 sends the first parameter to the terminal through a system message.

In practical application, the second sending unit 801 may be implemented by a communication interface in the cell reselection apparatus; the second determining unit 802 may be implemented by a processor in the cell reselection apparatus in combination with the communication interface.

It should be noted that: when the cell reselection apparatus provided in the above embodiments performs cell reselection, only the division of the above program modules is used as an example for illustration, and in practical applications, the above processing may be allocated to different program modules as required. Completion means dividing the internal structure of the device into different program modules to complete all or part of the processing described above. In addition, the cell reselection apparatus provided in the above embodiments and the cell reselection method embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application further provides a terminal. As shown in FIG. 9 , the terminal 900 includes:

A first communication interface 901, capable of information interaction with network devices;

The first processor 902 is connected to the first communication interface 901 to realize information interaction with the network device, and is configured to execute the method provided by one or more technical solutions on the terminal side when running a computer program. And the computer program is stored on the first memory 903 .

Specifically, for the above-mentioned first cell reselection mode, the first communication interface 901 is configured to receive a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the first processor 902, is configured to use the received first parameter to perform cell reselection; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the first processor 902 is configured as:

Determine the reselection ranking of the serving cell and neighboring cells;

In an embodiment, the first processor 902 determines a cell whose cell quality meets the requirements of the first parameter from the serving cell and the neighboring cells;

In one embodiment, the first processor 902 is configured to:

Wherein, in an embodiment, the first processor 902 uses a fifth parameter to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; the fifth parameter represents the offset of the MBS.

In an embodiment, in the case that the fifth parameter is an offset for one MBS, the first processor 902 uses the offsets of the M MBSs to determine the reuse of the serving cell and/or the neighbor cell. The R value of the selection ranking; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, in the case that the fifth parameter is an offset for one TMGI, the first processor 902 uses the offsets of N TMGIs to determine the overlap of the serving cell and/or the neighboring cell. R value of the selection ranking; N is an integer greater than or equal to 1; N represents the number of TMGIs corresponding to MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset shared by all MBSs, the first processor 902 uses the offsets of the Q MBSs to determine the overlap of the serving cell and/or the neighboring cell. The R value of the selection ranking; Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for a group of MBSs, the first processor 902 uses the offsets of the P MBSs to determine the value of the serving cell and/or the neighbor cell. The R value of the reselection ranking; P represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one MBS, the first processor 902 determines the serving cell and/or the offset of one MBS that satisfies the fourth condition The R-value of the reselection ranking of neighbor cells.

In an embodiment, in the case that the fifth parameter is an offset for one TMGI, the first processor 902 determines the serving cell and/or the offset of one TMGI that satisfies the fifth condition The R-value of the reselection ranking of neighbor cells.

In an embodiment, when the fifth parameter is an offset shared by all MBSs, the first processor 902 uses the offset of one MBS to determine the reselection of a serving cell and/or a neighboring cell. R-value for ranking.

In an embodiment, in the case that the fifth parameter is an offset for a group of MBSs, the first processor 902 determines the serving cell and/or by using the offset of one MBS that satisfies the seventh condition. or the R-value of the reselection ranking of neighboring cells.

In an embodiment, the first communication interface 901 is further configured to receive the fifth parameter.

Wherein, in an embodiment, the first communication interface 901 receives the fifth parameter through a system message.

In one embodiment, the first communication interface 901 receives the first parameter through a system message.

For the above-mentioned second cell reselection method, the first communication interface 901 is configured to receive a fifth parameter; the fifth parameter represents the offset of the MBS; the first processor 902 is configured to use the received The fifth parameter determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; and uses the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; wherein, the fifth parameter satisfies the following conditions one:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, in the case that the fifth parameter is the offset for one MBS, the first processor 902 uses the offsets of the M MBSs to determine the R of the reselection ranking of the serving cell and/or the neighboring cell value; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive.

In an embodiment, when the fifth parameter is an offset for one TMGI, the first processor 902 uses the offsets of N TMGIs to determine the reselection ranking of the serving cell and the neighboring cell. The R value of ; N is an integer greater than or equal to 1; N represents the number of TMGIs corresponding to the MBS that the terminal is interested in or wants to receive.

In one embodiment, when the fifth parameter is an offset for one TMGI, the first processor 902 determines the serving cell and/or the offset of one TMGI that satisfies the fifth condition. The R-value of the reselection ranking of neighbor cells.

In one embodiment, the first communication interface 901 receives the fifth parameter through a system message.

In an embodiment, the first communication interface 901 is further configured to receive a first parameter; the first parameter represents a minimum quality requirement for the terminal to receive MBS;

The first processor 902 is configured to perform cell reselection using the R value of the reselection ranking of the serving cell and the neighboring cell and in combination with the received first parameter.

Wherein, in an embodiment, the first processor 902 is configured as:

It should be noted that: the specific processing process of the first processor 902 and the first communication interface 901 can be understood with reference to the above method.

Of course, in practical application, various components in the terminal 900 are coupled together through the bus system 904 . It will be appreciated that the bus system 904 is configured to enable connection communication between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 904 in FIG. 9 .

The first memory 903 in the embodiment of the present application is configured to store various types of data to support the operation of the terminal 900 . Examples of such data include: any computer program used to operate on the terminal 900 .

The methods disclosed in the above embodiments of the present application may be applied to the first processor 902 or implemented by the first processor 902 . The first processor 902 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the first processor 902 or an instruction in the form of software. The above-mentioned first processor 902 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The first processor 902 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the first memory 903, and the first processor 902 reads the information in the first memory 903, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the terminal 900 may be implemented by one or more Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components An implementation is configured to perform the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application further provides a network device. As shown in FIG. 10 , the network device 1000 includes:

The second communication interface 1001 is capable of information interaction with the terminal;

The second processor 1002 is connected to the second communication interface 1001 to realize information exchange with the terminal, and is configured to execute the method provided by one or more technical solutions on the network device side when running a computer program. And the computer program is stored on the second memory 1003 .

Specifically, in an embodiment, the second communication interface 1001 is configured to send the first parameter to the terminal; the second communication interface is configured to send the first parameter to the terminal; the first parameter represents the reception of the terminal by the terminal Minimum quality requirements for MBS; the first parameter sent meets one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the second processor 1002 is configured to determine the first parameter.

In an embodiment, the second communication interface 1001 sends the first parameter to the terminal through a system message.

In an embodiment, the second communication interface 1001 is configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; the fifth parameter is used for the terminal to determine the serving cell and The R value of the reselection ranking of neighboring cells; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.

Wherein, in an embodiment, the second processor 1002 is configured to determine the fifth parameter.

In an embodiment, the second communication interface 1001 sends the fifth parameter to the terminal through a system message.

It should be noted that: the specific processing process of the second communication interface 1001 and the second processor 1002 can be understood with reference to the above method.

Of course, in practical application, various components in the network device 1000 are coupled together through the bus system 1004 . It will be appreciated that the bus system 1004 is configured to enable connection communication between these components. In addition to the data bus, the bus system 1004 also includes a power bus, a control bus, and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 1004 in FIG. 10 .

The second memory 1003 in this embodiment of the present application is configured to store various types of data to support the operation of the network-connected device 1000 . Examples of such data include: any computer program used to operate on network device 1000 .

The methods disclosed in the above embodiments of the present application may be applied to the second processor 1002 or implemented by the second processor 1002 . The second processor 1002 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the second processor 1002 or an instruction in the form of software. The above-mentioned second processor 1002 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The second processor 1002 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the second memory 1003, the second processor 1002 reads the information in the second memory 1003, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, network device 1000 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components configured to perform the aforementioned methods.

It can be understood that the memory (the first memory 903 and the second memory 1003 ) in this embodiment of the present application may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-only memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be disk memory or tape memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of example but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), Enhanced Type Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory) ). The memories described in the embodiments of the present application are intended to include, but not be limited to, these and any other suitable types of memories.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a cell reselection system. As shown in FIG. 11 , the system includes: a network device 1101 and a terminal 1102 .

Here, it should be noted that the specific processing procedures of the network device 1101 and the terminal 1102 have been described in detail above, and will not be repeated here.

In an exemplary embodiment, an embodiment of the present application further provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 903 that stores a computer program. The first processor 902 executes to complete the steps of the aforementioned terminal-side method. For another example, it includes a second memory 1003 that stores a computer program, and the computer program can be executed by the second processor 1002 of the network device 1000 to complete the steps of the aforementioned method on the network device side. The computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

It should be noted that "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

In addition, the technical solutions described in the embodiments of the present application may be combined arbitrarily unless there is a conflict.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application.

Claims

A cell reselection method, applied to a terminal, includes:

receiving a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive multicast and broadcast service MBS;

Cell reselection is performed using the received first parameter; wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a temporary mobile group identifier TMGI;

The first parameter is common to a group of MBSs or all MBSs.
The method according to claim 1, wherein the using the first parameter to perform cell reselection comprises:

Determine the reselection ranking of the serving cell and neighboring cells;

Cell reselection is performed using the first parameter and the reselection ranking of the serving cell and the neighboring cell.
The method according to claim 2, wherein the cell reselection using the first parameter and the reselection ranking of the serving cell and the neighboring cell comprises:

Determine a cell whose cell quality meets the requirements of the first parameter from the serving cell and neighboring cells;

The cell with the highest reselection ranking is selected from the cells whose cell quality meets the requirements of the first parameter, and cell reselection is performed.
The method according to claim 2, wherein the determining the reselection ranking of the serving cell and the neighboring cell comprises:

Determine the R value for the reselection ranking of the serving cell and neighbor cells.
The method of claim 4, wherein,

Using the fifth parameter, the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined; the fifth parameter represents the offset of the MBS.
The method of claim 5, wherein the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
The method according to claim 6, wherein the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined by using the fifth parameter, comprising one of the following:

In the case where the fifth parameter is the offset for one MBS, use the offsets of the M MBSs to determine the R value of the reselection ranking of the serving cell and/or the neighbor cell; or use the R value that satisfies the fourth condition The offset of an MBS, which determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for one TMGI, use the offsets of N TMGIs to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; or use the R value that satisfies the fifth condition An offset of TMGI, which determines the R value of the reselection ranking of the serving cell and/or neighboring cells; N is an integer greater than or equal to 1; N represents the TMGI corresponding to the MBS that the terminal is interested in or wants to receive number;

In the case where the fifth parameter is an offset shared by all MBSs, use the offsets of Q MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the offset of one MBS Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for a group of MBSs, use the offsets of the P MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the seventh condition that satisfies The offset of one MBS of , determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; P is an integer greater than or equal to 1; P represents the number of MBSs that the terminal is interested in or wants to receive .
A cell reselection method, applied to network equipment, includes:

Send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.
The method of claim 8, wherein the method further comprises:

A fifth parameter is sent to the terminal; the fifth parameter represents the offset of the MBS.
The method of claim 9, wherein the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
A cell reselection method, applied to a terminal, includes:

receiving a fifth parameter; the fifth parameter represents the offset of the MBS;

Using the received fifth parameter, determine the R value of the reselection ranking of the serving cell and/or the neighboring cell;

Use the R value of the reselection ranking of the serving cell and the neighboring cell to perform cell reselection; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
The method according to claim 11, wherein the R value of the reselection ranking of the serving cell and/or the neighboring cell is determined by using the fifth parameter, comprising one of the following:

In the case where the fifth parameter is the offset for one MBS, use the offsets of M MBSs to determine the R value of the reselection ranking of the serving cell and/or the neighbor cell; or use the R value that satisfies the fourth condition The offset of an MBS, which determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; M is an integer greater than or equal to 1; M represents the number of MBSs that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for one TMGI, use the offsets of N TMGIs to determine the R value of the reselection ranking of the serving cell and/or the neighboring cell; or use the R value that satisfies the fifth condition An offset of TMGI, which determines the R value of the reselection ranking of the serving cell and/or neighboring cells; N is an integer greater than or equal to 1; N represents the TMGI corresponding to the MBS that the terminal is interested in or wants to receive number;

In the case where the fifth parameter is an offset shared by all MBSs, use the offsets of Q MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the offset of one MBS Q is an integer greater than or equal to 1; Q represents the number of MBS services that the terminal is interested in or wants to receive;

In the case where the fifth parameter is an offset for a group of MBSs, use the offsets of the P MBSs to determine the R value of the reselection ranking of the serving cell and/or neighboring cells; or use the seventh condition that satisfies The offset of one MBS of , determines the R value of the reselection ranking of the serving cell and/or the neighboring cell; P is an integer greater than or equal to 1; P represents the number of MBSs that the terminal is interested in or wants to receive .
The method of claim 11 or 12, wherein the method further comprises:

receiving a first parameter; the first parameter represents a minimum quality requirement for the terminal to receive MBS;

The cell reselection is performed by using the R value of the reselection ranking of the serving cell and the neighboring cell and in combination with the received first parameter.
The method of claim 13, wherein the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.
The method according to claim 13, wherein the performing cell reselection by using the R value of the reselection ranking of the serving cell and the neighboring cell in combination with the received first parameter comprises:

Determine a cell whose cell quality meets the requirements of the first parameter from the serving cell and neighboring cells;

A cell with a high R value is selected from the cells whose cell quality meets the requirements of the first parameter, and cell reselection is performed.
A cell reselection method, applied to network equipment, includes:

Send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
The method of claim 16, wherein the method further comprises:

Send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS.
The method of claim 17, wherein the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs.
A terminal, comprising: a first communication interface and a first processor; wherein,

the first communication interface is configured to receive a first parameter; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the first processor is configured to use the first parameter to perform cell reselection; wherein , the first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs;

or,

The first communication interface is configured to receive a fifth parameter; the fifth parameter represents the offset of the MBS; the first processor is configured to use the received fifth parameter to determine a serving cell and/or a neighboring cell The R value of the reselection ranking; and the R value of the reselection ranking of the serving cell and the neighboring cell is used to carry out cell reselection; wherein, the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
A network device, comprising: a second communication interface and a second processor; wherein,

The second communication interface is configured to send a first parameter to the terminal; the first parameter represents the minimum quality requirement for the terminal to receive MBS; the sent first parameter satisfies one of the following conditions:

The first parameter is for one MBS;

The first parameter is for a TMGI;

The first parameter is common to a group of MBSs or all MBSs;

or,

The second communication interface is configured to send a fifth parameter to the terminal; the fifth parameter represents the offset of the MBS; wherein the fifth parameter satisfies one of the following conditions:

The fifth parameter is an offset for one MBS;

The fifth parameter is an offset for a TMGI;

The fifth parameter is an offset common to a group of MBSs or all MBSs.
A terminal comprising: a first processor and a first memory configured to store a computer program executable on the processor,

Wherein, the first processor is configured to execute the steps of the method of any one of claims 1 to 7, or to execute the steps of the method of any one of claims 11 to 15 when running the computer program.
A network device comprising: a second processor and a second memory configured to store a computer program executable on the processor,

Wherein, the second processor is configured to execute the steps of the method according to any one of claims 8 to 10, or implement the steps of the method according to any one of claims 16 to 18, when running the computer program.
A storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method according to any one of claims 1 to 7, or realizes the steps of the method according to any one of claims 8 to 10. step, or a step of implementing the method of any one of claims 11 to 15, or a step of implementing the method of any one of claims 16 to 18.