CN109769282A

CN109769282A - A method, terminal and network device for cell reselection

Info

Publication number: CN109769282A
Application number: CN201711097614.6A
Authority: CN
Inventors: 谢芳; 张晓然; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communication Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communication Co Ltd
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2019-05-17
Also published as: WO2019091203A1

Abstract

Embodiments of the present invention provide a method, a terminal, and a network device for cell reselection. The method for cell reselection includes: acquiring reselection parameters when a terminal supporting an inactive state reselection from a source cell to a target cell, the source cell being a cell in a first radio access network notification area RNA, and the target cell is a cell in the second RNA; the reselection parameters include at least: a preset target reselection time period and/or parameters of the target cell; reselection to the target cell according to the reselection parameters and the terminal reselection to the target cell Select the condition and reselect to the target cell. The solution of the present invention provides a cell reselection mechanism that supports an inactive state. When reselecting a cell across RNAs, the terminal configures RNA-related reselection conditions and reselection time for it, so that the UE can stay in the current cell as much as possible. In RNA, avoid switching RNA frequently and avoid the overhead caused by switching RNA.

Description

A kind of method of cell reselection, terminal and the network equipment

Technical field

The present invention relates to the communications fields, particularly relate to the method, terminal and the network equipment of a kind of cell reselection.

Background technique

5G defines a kind of new UE (user terminal) state, i.e. inactive (inactive state).UE in a state in which When lower, the connection of wireless RRC (wireless heterogeneous networks) is released, but the connection of core net thinks the UE there is also, core net Also in connected state.

For the UE of inactive state, when RNA (RAN Notification Area, the wireless access network notification area locating for it Domain) generate variation when, new gNB (node B or target BS) need to source gNB obtain UE contextual information.

Therefore, it causes UE frequently to replace RNA and brings biggish signaling overheads.

Summary of the invention

The present invention provides a kind of method of cell reselection, terminal and the network equipments.For supporting unactivated state (inactive) cell re-selection mechanism, terminal is at the re-selecting cell across RNA, for the relevant reselection conditions of its configuration RNA and again The time is selected, so that UE is stayed in as far as possible in current RNA, avoids frequent switching RNA, and avoids the expense due to caused by switching RNA.

In order to solve the above technical problems, the embodiment of the present invention provides following scheme:

A kind of method of cell reselection, comprising:

Obtain the reselecting parameters for supporting the terminal of unactivated state from source cell gravity treatment to Target cell when, the source cell For the cell in the first wireless access network notification area RNA, the Target cell is the cell in the 2nd RNA；The gravity treatment ginseng Number includes at least: the parameter of goal-selling reselection time section and/or the Target cell；

According to the reselection conditions of the reselecting parameters and terminal gravity treatment to the Target cell, gravity treatment is small to the target Area.

Wherein, the reselecting parameters further include the parameter of the source cell, and the goal-selling reselection time section is greater than base Plinth reselection time section.

Wherein, according to the reselecting parameters and terminal gravity treatment to the reselection conditions of the Target cell, gravity treatment is described in The step of Target cell includes:

Reselection conditions according to goal-selling reselection time section and terminal gravity treatment to the Target cell, gravity treatment to the mesh Mark cell；Or

It is small to the target according to the first parameter of the source cell, the second parameter of the Target cell and terminal gravity treatment The reselection conditions in area, gravity treatment to the Target cell；Or

According to the goal-selling reselection time section, the first parameter of the source cell, the second ginseng of the Target cell Several and reselection conditions of the terminal gravity treatment to the Target cell, gravity treatment to the Target cell.

Wherein, the goal-selling reselection time section is Treselection_RAT+Treselection_RNA；

Wherein, Treselection_RATFor basic reselection time section, Treselection_RNAFor the cell for the 2nd RNA Default reselection time offset.

Wherein, according to the reselection conditions of first parameter, second parameter and terminal gravity treatment to the Target cell, Gravity treatment includes: to the step of Target cell

In the alien frequencies or different system cell that the Target cell is high priority, and the source cell has the source small First preset threshold of first parameter in area, if the second parameter of the Target cell is more than the second goal-selling threshold value, Then to the Target cell, first parameter is Reference Signal Received Quality RSRQ for gravity treatment.

Wherein, if the second parameter of the Target cell is more than the second preset threshold, gravity treatment is small to the target The step of area includes:

If Squal > Thresh of Target cell_X,HighQ+Thresh_RNA,HighQOr the Srxlev of Target cell > Thresh_X,HighP+Thresh_RNA,HighP, then gravity treatment to the Target cell；

Wherein, the Squal is cell selection signal mass value, and Srxlev is cell selection reception signal level intensity Value；

Thresh_X,HighQ+Thresh_RNA,HighQFor the second goal-selling threshold value of Squal, Thresh_X,HighQFor Squal's Basic threshold, Thresh_RNA,HighQFor the threshold shift of the Squal of the 2nd RNA；

Thresh_X,HighP+Thresh_RNA,HighPFor the second goal-selling threshold value of Srxlev, Thresh_X,HighPFor Srxlev Basic threshold, Thresh_RNA,HighPFor the threshold shift of the Srxlev of the 2nd RNA.

Wherein, according to the reselection conditions of first parameter, second parameter and terminal gravity treatment to the Target cell, Gravity treatment includes: to the Target cell step

In the alien frequencies or different system cell that the Target cell is high priority, and the source cell does not provide and is based on When the threshold value of the first parameter reference signal receiving quality RSRQ, if the second parameter of the Target cell is more than the second default mesh Mark threshold value, then gravity treatment to the Target cell.

Wherein, if the second parameter of the Target cell is more than the second goal-selling threshold value, gravity treatment to the target The step of cell includes:

If Srxlev > Thresh of Target cell_X,HighP+Thresh_RNA,HighP, then gravity treatment to the Target cell；

Wherein, Thresh_X,HighP+Thresh_RNA,HighPFor the second goal-selling threshold value of Srxlev, Thresh_X,HighPFor The basic threshold of Srxlev, Thresh_RNA,HighPFor the threshold shift of the Srxlev of the 2nd RNA.

When the Target cell and the source cell are the alien-frequency district with frequency or equal priority, according to described first Parameter and second parameter grade to the source cell and the Target cell, obtain best Target cell of grading, Lay equal stress on and choose the best Target cell of grading, first parameter is the Rs of the source cell, and second parameter is institute State the Rn of Target cell.

Wherein, source cell Rs=Q_meas,s+Q_Hyst-Q_offsettemp；

Target cell Rn=Q_meas,n-Q_offset-Q_offsettemp-Q_offsetRNA；

Wherein, Q_meas,sFor the Reference Signal Received Power RSRP measured value of source cell, Q_HystIt is slow for the measurement of source cell It is stagnant, Q_offsettempIt is biased for the measurement of source cell；

Q_meas,nIt is the Reference Signal Received Power RSRP measured value of Target cell, Q_offsetFor the first measurement of Target cell Biasing, Q_offsettempFor the second measurement biasing of Target cell, Q_offsetRNAIt is inclined for the measurement that belongs to the Target cell of different RNA Shifting amount.

In the alien frequencies or different system cell that the Target cell is low priority, and the first parameter of the source cell is low When the first preset threshold, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold value, and institute The second parameter for stating Target cell is more than the second goal-selling threshold value, then gravity treatment to the Target cell.

Wherein, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold value, and the mesh The second parameter for marking cell is more than the second goal-selling threshold value, then gravity treatment to the step of Target cell includes:

If Squal < Thresh of source cell_Serving,LowQ-Thresh_{RNA Serving,LowQ}Or Squal < Thresh_Serving,LowQ, and Squal > Thresh of Target cell_X,LowQ+Thresh_RNA,LowQ；Or

Squal < Thresh of source cell_Serving,LowQ-Thresh_{RNA Serving,LowQ}Or Squal < Thresh_Serving,LowQ, and Srxlev > Thresh of Target cell_X,LowP+Thresh_RNA,LowP, then gravity treatment is small to the target Area；

Wherein, Thresh_Serving,LowQFor the basic Low threshold of the Squal of source cell, Thresh_{RNA Serving,LowQ}For needle To the threshold shift for the source cell Squal that the Target cell for belonging to different RNA from source cell is arranged；

Thresh_X,LowQFor the basic threshold of the Squal of Target cell, Thresh_RNA,LowQFor the target for belonging to different RNA The threshold shift of the Squal of cell；

Thresh_X,LowPFor the basic threshold of the Srxlev of Target cell, Thresh_RNA,LowPFor the target for belonging to different RNA The threshold shift of the Srxlev of cell.

Be alien frequencies for low priority or different system cell in the Target cell, and the source cell without needle When to the threshold value of Reference Signal Received Quality RSRQ, if the selection received signal level intensity value Srxlev of the source cell is low In the selection received signal level intensity value Srxlev of the first preset threshold, and the Target cell be more than the second goal-selling threshold Value, then gravity treatment to the Target cell.

Wherein, if the selection received signal level intensity value Srxlev of the source cell is lower than the first preset threshold, and The selection received signal level intensity value Srxlev of the Target cell is more than the second goal-selling threshold value, gravity treatment to the target The step of cell includes:

If Srxlev < Thresh of the source cell_Serving,LowP-Thresh_{RNA Serving,LowP}Or Srxlev < Thresh_Serving,LowP, and Srxlev > Thresh of the Target cell_X,LowP+Thresh_RNA,LowP, then gravity treatment to the target Cell；

Wherein, Thresh_Serving,LowPFor the basic threshold of the Srxlev of source cell, Thresh_{RNA Serving,LowP}It is small for source The default bias amount of the Srxlev in area；

Thresh_X,LowPFor the basic threshold of the Srxlev of Target cell, Thresh_RNA,LowPFor the Srxlev of Target cell Default bias amount.

Wherein, terminal is related to from being obtained in the default reselection time section and/or reselection conditions in the system message of source cell And threshold value；Or

Terminal obtains the default reselection time section and/or gravity treatment item from radio resource control RRC connection release message Threshold value involved in part；Or

Terminal obtains threshold involved in the default reselection time section and/or reselection conditions from system reconfiguration message Value.

Wherein, gravity treatment includes: to the step of Target cell

Gravity treatment to the Target cell include the cell of multiple and different priority when, gravity treatment to the small of highest priority Area；Or

When gravity treatment is to the cell that the Target cell includes multiple equal priorities, gravity treatment is to according to predetermined order condition After being ranked up to the cell of multiple equal priorities, sort best cell.

The embodiment of the present invention also provides a kind of terminal, comprising:

Transceiver, for obtaining the gravity treatment ginseng for supporting the terminal of unactivated state from source cell gravity treatment to Target cell when Number, the source cell are the cell in the first wireless access network notification area RNA, and the Target cell is small in the 2nd RNA Area；The reselecting parameters include at least: the parameter of goal-selling reselection time section and/or the Target cell；

Processor, for the reselection conditions according to the reselecting parameters and terminal gravity treatment to the Target cell, gravity treatment To the Target cell.

Wherein, the reselecting parameters further include the parameter of the source cell, and the goal-selling reselection time section is greater than just Normal reselection time section.

Wherein, the processor is in the gravity treatment item according to the reselecting parameters and terminal gravity treatment to the Target cell Part is specifically used for when gravity treatment is to the Target cell:

In the alien frequencies or different system cell that the Target cell is high priority, while the source cell has the source First preset threshold of the first parameter of cell, if the second parameter of the Target cell is more than the second goal-selling threshold value When, then gravity treatment to the Target cell, first parameter is Reference Signal Received Quality RSRQ.

Wherein, if the second parameter of the Target cell is more than the second preset threshold, gravity treatment is small to the target Area includes:

Wherein, if the second parameter of the Target cell is more than the second goal-selling threshold value, gravity treatment to the target Cell includes:

Wherein, source cell Rs=Q_meas,s+Q_Hyst-Q_offsettemp；

Target cell Rn=Q_meas,n-Q_offset-Q_offsettemp-Q_offsetRNA；

Wherein, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold value, and the mesh The second parameter for marking cell is more than the second goal-selling threshold value, then gravity treatment includes: to the Target cell

Wherein, Thresh_Serving,LowQFor the basic Low threshold of the Squal of source cell, Thresh_{RNA Serving,LowQ}For needle To the threshold shift of the Squal of the source cell for the Target cell setting for belonging to different RNA from source cell；

Wherein, if the selection received signal level intensity value Srxlev of the source cell is lower than the first preset threshold, and The selection received signal level intensity value Srxlev of the Target cell is more than the second goal-selling threshold value, gravity treatment to the target Cell includes:

Wherein, Thresh_Serving,LowPFor the basic threshold of the Srxlev of source cell, Thresh_{RNA Serving,LowP}It is small for source The threshold shift of the Srxlev in area；

Thresh_X,LowPFor the basic threshold of the Srxlev of Target cell, Thresh_RNA,LowPFor the Srxlev of Target cell Threshold shift.

Wherein, the transceiver be specifically used for obtained from the system message of source cell the default reselection time section and/ Or threshold value involved in reselection conditions；Or

From being obtained in radio resource control RRC connection release message in the default reselection time section and/or reselection conditions The threshold value being related to；Or

Threshold value involved in the default reselection time section and/or reselection conditions is obtained from system reconfiguration message.

Wherein, the processor is specifically used for when gravity treatment is to the Target cell:

The embodiment of the present invention also provides a kind of method of cell reselection, comprising:

Threshold value involved in reselection time section and/or reselection conditions, institute are preset to supporting the terminal of unactivated state to send State default reselection time section be terminal from the source cell gravity treatment in the first wireless access network notification area RNA into the 2nd RNA Reselecting parameters when Target cell.

Wherein, sending the step of presetting threshold value involved in reselection time section and/or reselection conditions to terminal includes:

By sending threshold value involved in default reselection time section and/or reselection conditions to terminal in system message；Or

Default reselection time section and/or reselection conditions are sent to terminal by radio resource control RRC connection release message Involved in threshold value；Or

Threshold value involved in default reselection time section and/or reselection conditions is sent to terminal by system reconfiguration message.

The embodiment of the present invention also provides a kind of network equipment, comprising:

Transceiver, for being related into the default reselection time section of terminal transmission and/or reselection conditions for supporting unactivated state And threshold value, the default reselection time section be terminal from source cell gravity treatment to Target cell when reselecting parameters.

Wherein, the transceiver is specifically used for by sending default reselection time section and/or again to terminal in system message Select threshold value involved in condition；Or default reselection time is sent to terminal by radio resource control RRC connection release message Threshold value involved in section and/or reselection conditions；Or by system reconfiguration message to terminal send default reselection time section and/ Or threshold value involved in reselection conditions.

The embodiment of the present invention also provides a kind of communication equipment, comprising: processor, the storage for being stored with computer program Device when the computer program is run by processor, executes method as described above.

The embodiment of the present invention also provides a kind of computer readable storage medium, including instruction, when described instruction is calculating When machine is run, so that computer executes method as described above.

Above scheme of the invention is include at least the following beneficial effects:

Above scheme of the invention obtains the weight for supporting the terminal of unactivated state from source cell gravity treatment to Target cell when Parameter is selected, the source cell is the cell in the first wireless access network notification area RNA, and the Target cell is in the 2nd RNA Cell；The reselecting parameters include at least: the parameter of goal-selling reselection time section and/or the Target cell, described pre- If target reselection time section is greater than normal reselection time section；It is small to the target according to the reselecting parameters and terminal gravity treatment The reselection conditions in area, gravity treatment to the Target cell.So that terminal is not simple when the re-selecting cell across RNA occurs Judge whether the parameter of Target cell is greater than dependent threshold and gravity treatment occurs, but according at least to greater than normal reselection time section The reselecting parameters of goal-selling reselection time or Target cell when meeting certain condition, then carry out the gravity treatment across RNA, reduce Due to caused by reselecting parameters in the prior art and reselection conditions the problem of frequent switching RNA, to reduce due to frequency Signaling overheads caused by numerous switching RNA.

Detailed description of the invention

Fig. 1 is the flow chart of the method for cell reselection of the invention；

Fig. 2 is the module architectures schematic diagram of terminal of the invention.

Specific embodiment

Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure It is fully disclosed to those skilled in the art.

As shown in Figure 1, the embodiment of the present invention provides a kind of method of cell reselection, comprising:

Step 11, the reselecting parameters for supporting the terminal of unactivated state from source cell gravity treatment to Target cell when, institute are obtained Stating source cell is the cell in the first wireless access network notification area RNA, and the Target cell is the cell in the 2nd RNA；Institute It states reselecting parameters to include at least: the parameter of goal-selling reselection time section and/or the Target cell；

Step 12, the reselection conditions according to the reselecting parameters and terminal gravity treatment to the Target cell, gravity treatment to institute State Target cell.

The embodiment of the invention obtains the weight for supporting the terminal of unactivated state from source cell gravity treatment to Target cell when Parameter is selected, the source cell is the cell in the first wireless access network notification area RNA, and the Target cell is in the 2nd RNA Cell；The reselecting parameters include at least: the second parameter of goal-selling reselection time section and/or the Target cell, institute Goal-selling reselection time section is stated greater than normal reselection time section；According to the reselecting parameters and terminal gravity treatment to the mesh Mark the reselection conditions of cell, gravity treatment to the Target cell.So that terminal when the re-selecting cell across RNA occurs, is not letter Whether single parameter for judging Target cell, which is greater than dependent threshold, occurs gravity treatment, but according at least to greater than normal reselection time The goal-selling reselection time of section or the reselecting parameters of Target cell, when meeting certain condition, then carry out the gravity treatment across RNA, The problem of reducing the frequent switching RNA due to caused by reselecting parameters in the prior art and reselection conditions, thus reduce by The signaling overheads caused by frequent switching RNA.

In the embodiment of the invention, the reselecting parameters further include the parameter of the source cell.

Correspondingly, above-mentioned steps 12 can specifically include:

Step 121, the reselection conditions according to goal-selling reselection time section and terminal gravity treatment to the Target cell, gravity treatment To the Target cell；Or

Step 122, according to the first parameter of the source cell, the second parameter of the Target cell and terminal gravity treatment to institute State the reselection conditions of Target cell, gravity treatment to the Target cell；Or

Step 123, according to the goal-selling reselection time section, the first parameter of the source cell, the Target cell Reselection conditions to the Target cell of the second parameter and terminal gravity treatment, gravity treatment to the Target cell.

Wherein, in the step 121 and step 123, the goal-selling reselection time section is Treselection_RAT+ Treselection_RNA；

Wherein, Treselection_RATFor basic reselection time section, Treselection_RNAFor the cell for the 2nd RNA Default reselection time offset.The goal-selling reselection time section is applicable in following implementation.

In a specific embodiment of the invention, the specific implementation of the step 121 may include:

1211) in the alien frequencies or different system cell that the Target cell is high priority, and the source cell has institute The first preset threshold of the first parameter of source cell is stated, if goal-selling reselection time section reaches, gravity treatment to the target Cell；

1212) in the alien frequencies or different system cell that the Target cell is high priority, and the source cell does not mention When for threshold value based on the first parameter reference signal receiving quality RSRQ, if goal-selling reselection time section reaches, gravity treatment To the Target cell；

1213) when the Target cell and the source cell are the alien-frequency district with frequency or equal priority, according to institute It states the first parameter and second parameter grades to the source cell and the Target cell, obtain best target of grading Cell, if goal-selling reselection time section reaches, gravity treatment to the Target cell, first parameter is the source cell Rs, second parameter be the Target cell Rn；

1214) alien frequencies in the Target cell for low priority or different system cell, and the first of the source cell When parameter is lower than the first preset threshold, if goal-selling reselection time section reaches, gravity treatment to the Target cell；

It 1215) is alien frequencies for low priority or different system cell in the Target cell, and the source cell When being directed to the threshold value of Reference Signal Received Quality RSRQ, if goal-selling reselection time section reaches, gravity treatment is described in Target cell.

Above-mentioned 1211) -1215), compared with normal reselection time section, by increasing the cell reselection time across RNA, according to Biggish goal-selling reselection time section carries out the cell reselection across RNA and subtracts to reduce the cell reselection frequency across RNA Signaling overheads caused by few cell reselection across RNA.

In a specific embodiment of the invention, the specific implementation of the step 122 may include:

1221) in the alien frequencies or different system cell that the Target cell is high priority, while the source cell has First preset threshold of the first parameter of the source cell, if the second parameter of the Target cell is more than the second goal-selling When threshold value, then gravity treatment to the Target cell, first parameter is Reference Signal Received Quality RSRQ.

Here, in the case where considering the RSRQ of source cell, the thresholding of the Squal by improving Target cell, or Improve the Srxlev thresholding of Target cell, i.e. Thresh_X,HighQ+Thresh_RNA,HighQGreater than Thresh_X,HighQ, or Thresh_X,HighP+Thresh_RNA,HighPGreater than Thresh_X,HighQ, the cell reselection across RNA is carried out according to higher door, thus Reduce the cell reselection frequency across RNA, reduces signaling overheads caused by the cell reselection across RNA.

1222), in the alien frequencies or different system cell that the Target cell is high priority, and the source cell does not mention When for threshold value based on the first parameter reference signal receiving quality RSRQ, if the second parameter of the Target cell is more than second Goal-selling threshold value, then gravity treatment to the Target cell.

Here, in the case where not considering the RSRQ of source cell, by improving the Srxlev thresholding of Target cell, i.e., Thresh_X,HighP+Thresh_RNA,HighPGreater than Thresh_X,HighQ, the cell reselection across RNA is carried out according to higher door, thus Reduce the cell reselection frequency across RNA, reduces signaling overheads caused by the cell reselection across RNA.

1223), when the Target cell and the source cell are the alien-frequency district with frequency or equal priority, according to institute It states the first parameter and second parameter grades to the source cell and the Target cell, obtain best target of grading Cell lays equal stress on and chooses the best Target cell of grading, and first parameter is the Rs of the source cell, second parameter For the Rn of the Target cell.

Wherein, source cell Rs=Q_meas,s+Q_Hyst-Q_offsettemp；

Target cell Rn=Q_meas,n-Q_offset-Q_offsettemp-Q_offsetRNA；

Q_meas,nIt is the measured value of Target cell, Q_offsetFor the first measurement biasing of Target cell, Q_offsettempFor target Second measurement biasing of cell, Q_offsetRNAFor belong to different RNA Target cell measurement offset.

Here, by reducing the Rn of Target cell so that Target cell when being graded, be cited as it is preferable small A possibility that area, reduces, to reduce frequency of the terminal across RNA gravity treatment, reduces signaling overheads caused by the cell reselection across RNA.

1224), the alien frequencies in the Target cell for low priority or different system cell, and the first of the source cell When parameter is lower than the first preset threshold, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold Value, and the second parameter of the Target cell is more than the second goal-selling threshold value, then gravity treatment to the Target cell.

Thresh_X,LowQFor the basic threshold of the Squal of Target cell, Thresh_RNA,LowQIt is small to belong to different RNA targets The threshold shift of the Squal in area；

Thresh_X,LowPFor the basic threshold of the Srxlev of Target cell, Thresh_RNA,LowPIt is small to belong to different RNA targets The threshold shift of the Srxlev in area.

Here, it in the case that in the case where considering the Squal of source cell, the Squal of source cell is relatively low, is not able to satisfy When the demand of terminal, and the thresholding of the Squal by improving Target cell, or improve the Srxlev thresholding of Target cell, i.e., Thresh_X,LowQ+Thresh_RNA,LowQGreater than Thresh_X,LowQOr Thresh_X,LowP+Thresh_RNA,LowPIt is greater than Thresh_X,LowP, the cell reselection across RNA, which is carried out, according to higher door subtracts to reduce the cell reselection frequency across RNA Signaling overheads caused by few cell reselection across RNA.

It 1225) is, alien frequencies for low priority or different system cell in the Target cell, and the source cell When not being directed to the threshold value of Reference Signal Received Quality RSRQ, if the selection received signal level intensity value of the source cell Srxlev is lower than the first preset threshold, and the selection received signal level intensity value Srxlev of the Target cell is more than second pre- If targets threshold, then gravity treatment to the Target cell.

Here, in the case that in the case where considering the Srxlev of source cell, the Srxlev of source cell is relatively low, Bu Nengman When the demand of sufficient terminal, and the thresholding of the Srxlev by improving Target cell, the cell across RNA is carried out according to higher door Gravity treatment reduces signaling overheads caused by the cell reselection across RNA to reduce the cell reselection frequency across RNA.

In a specific embodiment of the invention, the specific implementation of the step 123 may include:

1231) in the alien frequencies or different system cell that the Target cell is high priority, while the source cell has First preset threshold of the first parameter of the source cell, when the goal-selling reselection time section reaches, if the mesh When second parameter of mark cell is more than the second goal-selling threshold value, then gravity treatment to the Target cell, first parameter is ginseng Examine signal receiving quality RSRQ.

Here, in the case where considering the RSRQ of source cell, when the goal-selling reselection time section reaches, pass through The thresholding of the Squal of Target cell is improved, or improves the Srxlev thresholding of Target cell, i.e. Thresh_X,HighQ+ Thresh_RNA,HighQGreater than Thresh_X,HighQOr Thresh_X,HighP+Thresh_RNA,HighPGreater than Thresh_X,HighQ, according to compared with High door carries out the cell reselection across RNA, to reduce the cell reselection frequency across RNA, reduces cell reselection across RNA Caused signaling overheads.

1232), in the alien frequencies or different system cell that the Target cell is high priority, and the source cell does not mention When for threshold value based on the first parameter reference signal receiving quality RSRQ, when the goal-selling reselection time section reaches, such as Second parameter of Target cell described in fruit is more than the second goal-selling threshold value, then gravity treatment to the Target cell.

Here, in the case where not considering the RSRQ of source cell, when the goal-selling reselection time section reaches, pass through Improve the Srxlev thresholding of Target cell, i.e. Thresh_X,HighP+Thresh_RNA,HighPGreater than Thresh_X,HighQ, according to higher Door carries out the cell reselection across RNA, to reduce the cell reselection frequency across RNA, reduces cell reselection across RNA and causes Signaling overheads.

1233), when the Target cell and the source cell are the alien-frequency district with frequency or equal priority, according to institute It states the first parameter and second parameter grades to the source cell and the Target cell, obtain best target of grading Cell lays equal stress on when the goal-selling reselection time section reaches and chooses the best Target cell of grading, first ginseng Number is the Rs of the source cell, and second parameter is the Rn of the Target cell.

Wherein, source cell Rs=Q_meas,s+Q_Hyst-Q_offsettemp；

Target cell Rn=Q_meas,n-Q_offset-Q_offsettemp-Q_offsetRNA；

Here, by reducing the Rn of Target cell so that Target cell when being graded, be cited as it is preferable small A possibility that area, reduces, and when the goal-selling reselection time section reaches, then carries out the cell reselection across RNA, thus Frequency of the terminal across RNA cell reselection is reduced, signaling overheads caused by the cell reselection across RNA is reduced.

1234), the alien frequencies in the Target cell for low priority or different system cell, and the first of the source cell When parameter is lower than the first preset threshold, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold Value, and when the goal-selling reselection time section reaches, the second parameter of the Target cell is more than the second goal-selling threshold Value, then gravity treatment to the Target cell.

Wherein, if the cell selection signal quality Squal of the source cell is lower than an aimed quality threshold value, described pre- If target reselection time section reaches, and the second parameter of the Target cell is more than the second goal-selling threshold value, then gravity treatment is arrived The step of Target cell includes:

When the goal-selling reselection time section reaches, if Squal < Thresh of source cell_Serving,LowQ- Thresh_{RNA Serving,LowQ}Or Squal < Thresh_Serving,LowQ, and Squal > Thresh of Target cell_X,LowQ+ Thresh_RNA,LowQ；Or

When the goal-selling reselection time section reaches, Squal < Thresh of source cell_Serving,LowQ- Thresh_{RNA Serving,LowQ}Or Squal < Thresh_Serving,LowQ, and Srxlev > Thresh of Target cell_X,LowP+ Thresh_RNA,LowP, then gravity treatment to the Target cell；

Wherein, Thresh_Serving,LowQFor the source cell for the Target cell setting for belonging to different RNA from source cell The normal Low threshold of Squal, Thresh_{RNA Serving,LowQ}For the threshold shift of the Squal of source cell；

Here, in the case where considering the Squal of source cell, the Squal of source cell is relatively low, is not able to satisfy the need of terminal When asking, and the thresholding of the Squal by improving Target cell, or improve the Srxlev thresholding of Target cell, i.e., Thresh_X,LowQ+Thresh_RNA,LowQGreater than Thresh_X,LowQOr Thresh_X,LowP+Thresh_RNA,LowPIt is greater than Thresh_X,LowP, when the goal-selling reselection time section reaches, the cell reselection across RNA is carried out according to higher thresholding, To reduce the cell reselection frequency across RNA, signaling overheads caused by the cell reselection across RNA is reduced.

It 1235) is, alien frequencies for low priority or different system cell in the Target cell, and the source cell When not being directed to the threshold value of Reference Signal Received Quality RSRQ, when the goal-selling reselection time section reaches, if described The selection received signal level intensity value Srxlev of source cell is lower than the first preset threshold, and the selection of the Target cell receives Signal level intensity value Srxlev is more than the second goal-selling threshold value, then gravity treatment to the Target cell.

Here, in the case that in the case where considering the Srxlev of source cell, the Srxlev of source cell is relatively low, Bu Nengman When the demand of sufficient terminal, when the goal-selling reselection time section reaches, and the door of the Srxlev by improving Target cell Limit carries out the cell reselection across RNA according to higher door, to reduce the cell reselection frequency across RNA, reduces across RNA Cell reselection caused by signaling overheads.

In addition, in the above embodiment of the present invention, when terminal obtains the default gravity treatment from the system message of source cell Between threshold value involved in section and/or reselection conditions；Or terminal obtained from radio resource control RRC connection release message it is described Threshold value involved in default reselection time section and/or reselection conditions；Or terminal obtained from system reconfiguration message it is described pre- If threshold value involved in reselection time section and/or reselection conditions.

In the above embodiment of the present invention, gravity treatment to the step of Target cell includes:

Gravity treatment to the Target cell include the cell of multiple and different priority when, gravity treatment to the small of highest priority Area；Or when gravity treatment is to the cell that the Target cell includes multiple equal priorities, gravity treatment is to according to predetermined order condition After being ranked up to the cell of multiple equal priorities, sort best cell.

In the above embodiment of the present invention, source cell can be the serving cell that terminal is presently in RNA, Target cell It can be the adjacent cell in another RNA, certainly in some cases, which is also source cell.Of the invention is above-mentioned each Cell re-selection mechanism of the embodiment for the UE of unactivated state, by configuring the relevant gravity treatment thresholding of RNA and timer for it (goal-selling reselection time section), so that UE is stayed in as far as possible in current RNA, avoids expense caused by frequent switching RNA.

As shown in Fig. 2, the embodiment of the present invention also provides a kind of terminal, comprising:

Wherein, source cell Rs=Q_meas,s+Q_Hyst-Q_offsettemp；

Target cell Rn=Q_meas,n-Q_offset-Q_offsettemp-Q_offsetRNA；

It should be noted that the embodiment of the terminal is equipment corresponding with the above method, in above method embodiment All implementations can also reach identical technical effect suitable for the embodiment of the terminal.

Threshold value involved in reselection time section and/or reselection conditions, institute are preset to supporting the terminal of unactivated state to send State default reselection time section be terminal from the source cell gravity treatment in the first wireless access network notification area RNA into the 2nd RNA Reselecting parameters when Target cell, the goal-selling reselection time section are greater than normal reselection time section.

Wherein, the step of sending threshold value involved in default reselection time section and/or reselection conditions to terminal includes: to pass through Threshold value involved in default reselection time section and/or reselection conditions is sent to terminal in system message；Or pass through radio resource It controls RRC connection release message and sends threshold value involved in default reselection time section and/or reselection conditions to terminal；Or pass through System reconfiguration message sends threshold value involved in default reselection time section and/or reselection conditions to terminal.

Transceiver, for being related into the default reselection time section of terminal transmission and/or reselection conditions for supporting unactivated state And threshold value, the default reselection time section be terminal from source cell gravity treatment to Target cell when reselecting parameters, it is described default Target reselection time section is greater than normal reselection time section.

It should be noted that the embodiment of the network equipment is equipment corresponding with the above method, above method embodiment In all implementations suitable for the embodiment of the network equipment, can also reach identical technical effect.

The embodiment of the present invention also provides a kind of communication equipment, comprising: processor, the storage for being stored with computer program Device when the computer program is run by processor, executes method as described above.Wherein, processor, memory pass through bus Or interface connection.The communication equipment can be the network equipment, such as base station, be also possible to terminal.

The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a method for cell reselection, comprising:

Obtain the reselection parameters when the terminal supporting the inactive state is reselection from the source cell to the target cell, where the source cell is a cell in the first radio access network notification area RNA, and the target cell is a cell in the second RNA ; The reselection parameters include at least: preset target reselection time period and/or parameters of the target cell;

The target cell is reselected according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell.

2 . The method for cell reselection according to claim 1 , wherein the reselection parameters further include parameters of the source cell, and the preset target reselection time period is greater than the basic reselection time period. 3 .

3. The method for cell reselection according to claim 2, wherein, according to the reselection parameters and the reselection conditions for the terminal to reselect to the target cell, the step of reselection to the target cell comprises:

Reselect the target cell according to the preset target reselection time period and the reselection conditions for the terminal to reselect to the target cell; or

Reselect to the target cell according to the first parameter of the source cell, the second parameter of the target cell and the reselection condition for the terminal to reselect to the target cell; or

The target cell is reselected according to the preset target reselection time period, the first parameter of the source cell, the second parameter of the target cell, and the reselection condition for the terminal to reselect to the target cell.

4. The method for cell reselection according to claim 3, wherein the preset target reselection time period is Treselection _RAT +Treselection _RNA ;

Wherein, the Treselection _RAT is the basic reselection time period, and the Treselection _RNA is the preset reselection time offset for the cell of the second RNA.

5 . The method for cell reselection according to claim 4 , wherein, according to the first parameter, the second parameter and the reselection condition for the terminal to reselection to the target cell, reselect the target cell. 6 . The steps for the target cell include:

When the target cell is a high-priority inter-frequency or inter-system cell, and the source cell has a first preset threshold of the first parameter of the source cell, if the second parameter of the target cell exceeds the second parameter When the target threshold is preset, the target cell is reselected, and the first parameter is the reference signal reception quality RSRQ.

6. The method for cell reselection according to claim 5, wherein if the second parameter of the target cell exceeds a second preset threshold, the step of reselection to the target cell comprises:

If Squal>Thresh _X,HighQ +Thresh _RNA,HighQ of the target cell, or Srxlev>Thresh _X,HighP +Thresh _RNA,HighP of the target cell, then reselect to the target cell;

Wherein, the Squal is the cell selection signal quality value, and Srxlev is the cell selection received signal level strength value;

Thresh _X,HighQ +Thresh _RNA,HighQ is the second preset target threshold of Squal, Thresh _X,HighQ is the basic threshold of Squal, Thresh _RNA,HighQ is the threshold offset of Squal of the second RNA;

Thresh _X,HighP +Thresh _RNA,HighP is the second preset target threshold of Srxlev, Thresh _X,HighP is the basic threshold of Srxlev, Thresh _RNA,HighP is the threshold offset of Srxlev of the second RNA.

7 . The method for cell reselection according to claim 4 , wherein, according to the first parameter, the second parameter and the reselection condition for the terminal to reselection to the target cell, reselect the target cell. 8 . The target cell steps include:

When the target cell is a high-priority inter-frequency or inter-system cell, and the source cell does not provide a reference signal reception quality RSRQ threshold based on the first parameter, if the second parameter of the target cell exceeds the second predetermined parameter If the target threshold is set, the target cell is reselected.

8. The method for cell reselection according to claim 7, wherein if the second parameter of the target cell exceeds a second preset target threshold, the step of reselection to the target cell comprises:

If the Srxlev of the target cell>Thresh _X,HighP +Thresh _RNA,HighP , reselect the target cell;

Wherein, Thresh _X,HighP +Thresh _RNA,HighP is the second preset target threshold of Srxlev, Thresh _X,HighP is the basic threshold of Srxlev, Thresh _RNA,HighP is the threshold offset of Srxlev of the second RNA.

9 . The method for cell reselection according to claim 4 , wherein, according to the first parameter, the second parameter and the reselection condition for the terminal to reselection to the target cell, reselect the target cell. 10 . The steps for the target cell include:

When the target cell and the source cell are inter-frequency cells with the same frequency or the same priority, the source cell and the target cell are rated according to the first parameter and the second parameter, and a rating is obtained. The best target cell is selected, and the target cell with the best rating is reselected. The first parameter is the Rs of the source cell, and the second parameter is the Rn of the target cell.

10. The method for cell reselection according to claim 9, wherein,

source cell Rs=Qmeas _,s + _QHyst _-Qoffsettemp ;

Target cell Rn= _Qmeas _,n -Qoffset- _Qoffsettemp _-QoffsetRNA ;

Among them, Q _meas,s is the RSRP measurement value of the reference signal received power of the source cell, Q _Hyst is the measurement hysteresis of the source cell, and Q _offsettemp is the measurement offset of the source cell;

Q _meas,n is the RSRP measurement value of the reference signal received power of the target cell, Q _offset is the first measurement offset of the target cell, Q _offsettemp is the second measurement offset of the target cell, and Q _offsetRNA is the target cell belonging to different RNAs. Measure the offset.

11 . The method for cell reselection according to claim 4 , wherein, according to the first parameter, the second parameter and the reselection condition for the terminal to reselection to the target cell, the method for reselection to the target cell is 11 . The steps for the target cell include:

When the target cell is a low-priority inter-frequency or inter-system cell, and the first parameter of the source cell is lower than the first preset threshold, if the cell selection signal quality Squal of the source cell is lower than a target quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, the target cell is reselected.

12 . The method for cell reselection according to claim 11 , wherein, if the cell selection signal quality Squal of the source cell is lower than a target quality threshold, and the second parameter of the target cell exceeds a second preset value. 13 . If the target threshold is set, the steps of reselection to the target cell include:

If Squal<Thresh _Serving,LowQ -Thresh _{RNA Serving,LowQ} or Squal<Thresh _Serving,LowQ of the source cell, and Squal>Thresh _X,LowQ +Thresh _RNA,LowQ of the target cell; or

Squal<Thresh _Serving,LowQ -Thresh _{RNA Serving,LowQ} or Squal<Thresh _Serving,LowQ of the source cell, and Srxlev>Thresh _X,LowP +Thresh _RNA,LowP of the target cell, then the target cell is reselected;

Among them, Thresh _{Serving, LowQ} is the basic low threshold of the Squal of the source cell, and Thresh _{RNA Serving, LowQ} is the threshold offset of the Squal of the source cell set for the target cell belonging to a different RNA from the source cell;

Thresh _{X, LowQ} are the basic thresholds of the Squal of the target cell, Thresh _{RNA, LowQ} are the threshold offsets of the Squal of the target cells belonging to different RNAs;

Thresh _{X, LowP} is the basic threshold of the Srxlev of the target cell, Thresh _{RNA, LowP} is the threshold offset of the Srxlev of the target cell belonging to different RNAs.

13 . The method for cell reselection according to claim 4 , wherein, according to the first parameter, the second parameter and the reselection condition for the terminal to reselect to the target cell, the method for reselection to the target cell is 13 . The steps for the target cell include:

When the target cell is a low-priority inter-frequency or inter-system cell, and the source cell does not have a threshold for the reference signal received quality RSRQ, if the selected received signal level strength value Srxlev of the source cell is low At the first preset threshold, and the selected received signal level strength value Srxlev of the target cell exceeds the second preset target threshold, the target cell is reselected.

14 . The method for cell reselection according to claim 13 , wherein if the selected received signal level strength value Srxlev of the source cell is lower than a first preset threshold, and the selected received signal of the target cell When the level strength value Srxlev exceeds the second preset target threshold, the steps of reselection to the target cell include:

If Srxlev<Thresh _Serving,LowP -Thresh _{RNA Serving,LowP} or Srxlev<Thresh _Serving,LowP of the source cell, and Srxlev>Thresh _X,LowP +Thresh _RNA,LowP of the target cell, reselect to the target area;

Wherein, Thresh _{Serving, LowP} is the basic threshold of the Srxlev of the source cell, and Thresh _{RNA Serving, LowP} is the preset offset of the Srxlev of the source cell;

Thresh _{X, LowP} is the basic threshold of the Srxlev of the target cell, and Thresh _{RNA, LowP} is the preset offset of the Srxlev of the target cell.

15. The method for cell reselection according to claim 3, wherein the terminal obtains the preset reselection time period and/or the threshold involved in the reselection condition from a system message of the source cell; or

The terminal obtains the preset reselection time period and/or the threshold involved in the reselection condition from the RRC connection release message; or

The terminal obtains the preset reselection time period and/or the threshold involved in the reselection condition from the system reconfiguration message.

16. The method for cell reselection according to claim 1, wherein the step of reselection to the target cell comprises:

When the reselected target cell includes multiple cells with different priorities, reselect the cell with the highest priority; or

When it is reselected that the target cell includes a plurality of cells with the same priority, the cell with the best ranking is reselected after sorting the plurality of cells with the same priority according to a preset sorting condition.

17. A terminal, characterized in that, comprising:

A transceiver, used to obtain reselection parameters when a terminal supporting an inactive state reselection from a source cell to a target cell, where the source cell is a cell in the first radio access network notification area RNA, and the target cell is the first A cell in the second RNA; the reselection parameters include at least: a preset target reselection time period and/or parameters of the target cell;

The processor is configured to reselect to the target cell according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell.

The terminal according to claim 17, wherein the reselection parameters further include parameters of the source cell, and the preset target reselection time period is longer than a normal reselection time period.

19 . The terminal according to claim 18 , wherein, when the processor reselects the target cell according to the reselection parameters and the reselection conditions for the terminal to reselect to the target cell, the specific Used for:

20. The terminal according to claim 19, wherein the preset target reselection time period is Treselection _RAT +Treselection _RNA ;

21. The terminal according to claim 20, wherein, when the processor reselects the target cell according to the reselection parameters and the reselection conditions for the terminal to reselect to the target cell, the specific Used for:

When the target cell is a high-priority inter-frequency or inter-system cell, and the source cell has a first preset threshold of the first parameter of the source cell, if the second parameter of the target cell exceeds When the second preset target threshold is used, the target cell is reselected, and the first parameter is the reference signal reception quality RSRQ.

22. The terminal according to claim 21, wherein if the second parameter of the target cell exceeds a second preset threshold, reselection to the target cell comprises:

23. The terminal according to claim 20, wherein, when the processor reselects the target cell according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell, Specifically for:

24. The terminal according to claim 23, wherein if the second parameter of the target cell exceeds a second preset target threshold, reselection to the target cell comprises:

25. The terminal according to claim 20, wherein, when the processor reselects the target cell according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell, Specifically for:

26. The terminal according to claim 25, wherein,

source cell Rs=Qmeas _,s + _QHyst _-Qoffsettemp ;

Target cell Rn= _Qmeas _,n -Qoffset- _Qoffsettemp _-QoffsetRNA ;

27. The terminal according to claim 20, wherein, when the processor reselects the target cell according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell, Specifically for:

28. The terminal according to claim 27, wherein if the cell selection signal quality Squal of the source cell is lower than a target quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, Then reselection to the target cell includes:

Wherein, Thresh _{Serving, LowQ} is the basic low threshold of the Squal of the source cell, and Thresh _{RNA Serving, LowQ} is the threshold offset of the Squal of the source cell set for the target cell belonging to a different RNA from the source cell;

29. The terminal according to claim 20, wherein, when the processor reselects the target cell according to the reselection parameter and the reselection condition for the terminal to reselect to the target cell, Specifically for:

30. The terminal according to claim 29, wherein if the selected received signal level strength value Srxlev of the source cell is lower than a first preset threshold, and the selected received signal level strength value of the target cell is Srxlev exceeds the second preset target threshold, and reselection to the target cell includes:

Among them, Thresh _{Serving, LowP} is the basic threshold of the Srxlev of the source cell, and Thresh _{RNA Serving, LowP} is the threshold offset of the Srxlev of the source cell;

Thresh _{X, LowP} is the basic threshold of the Srxlev of the target cell, and Thresh _{RNA, LowP} is the threshold offset of the Srxlev of the target cell.

31. The terminal according to claim 19, wherein the transceiver is specifically configured to obtain the preset reselection time period and/or the threshold involved in the reselection condition from a system message of the source cell; or

Obtaining the preset reselection time period and/or the threshold involved in the reselection condition from the RRC connection release message; or

The thresholds involved in the preset reselection time period and/or the reselection conditions are obtained from the system reconfiguration message.

32. The terminal according to claim 17, wherein when the processor reselection to the target cell, the processor is specifically configured to:

33. A method for cell reselection, comprising:

Send the preset reselection time period and/or the threshold value involved in the reselection condition to the terminal supporting the inactive state, the preset reselection time period is that the terminal re-selection from the source cell in the first radio access network notification area RNA Reselection parameters when the target cell in the second RNA is selected.

34. The method for cell reselection according to claim 33, wherein the step of sending the preset reselection time period and/or the threshold value involved in the reselection condition to the terminal comprises:

Send the preset reselection time period and/or the threshold involved in the reselection condition to the terminal through the system message; or

Send the preset reselection time period and/or the threshold involved in the reselection condition to the terminal through the radio resource control RRC connection release message; or

The preset reselection time period and/or the threshold involved in the reselection condition are sent to the terminal through the system reconfiguration message.

35. A network device, comprising:

A transceiver, configured to send a preset reselection time period and/or a threshold value involved in the reselection condition to a terminal supporting an inactive state, where the preset reselection time period is when the terminal reselection from the source cell to the target cell Reselect parameters.

36. The method for cell reselection according to claim 35, wherein the transceiver is specifically configured to send the preset reselection time period and/or the threshold involved in the reselection condition to the terminal through a system message; Or send the preset reselection time period and/or the thresholds involved in the reselection conditions to the terminal through a radio resource control RRC connection release message; or send the preset reselection time period and/or reselection conditions to the terminal through a system reconfiguration message The thresholds involved in .

37. A communication device, characterized by comprising: a processor, a memory storing a computer program, and when the computer program is run by the processor, executes the method according to any one of claims 1-16, or 33 or the method described in 34.

38. A computer-readable storage medium, characterized by comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-16, or the method described in 33 or 34 method.