WO2019091203A1 - 小区重选的方法、终端及网络设备 - Google Patents

小区重选的方法、终端及网络设备 Download PDF

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Publication number
WO2019091203A1
WO2019091203A1 PCT/CN2018/104987 CN2018104987W WO2019091203A1 WO 2019091203 A1 WO2019091203 A1 WO 2019091203A1 CN 2018104987 W CN2018104987 W CN 2018104987W WO 2019091203 A1 WO2019091203 A1 WO 2019091203A1
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Prior art keywords
cell
target cell
reselection
target
threshold
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PCT/CN2018/104987
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English (en)
French (fr)
Inventor
谢芳
张晓然
刘光毅
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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
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Publication of WO2019091203A1 publication Critical patent/WO2019091203A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the present disclosure relates to the field of communications, and in particular to a method, a terminal, and a network device for cell reselection.
  • 5G defines a new User Equipment (UE) state, that is, inactive (inactive state).
  • UE User Equipment
  • RRC Radio Resource Control
  • the new gNB (Node B or the target base station) needs to acquire the context information of the UE from the source gNB.
  • the present disclosure provides a method, a terminal, and a network device for cell reselection.
  • the terminal configures RNA-related reselection conditions and reselection time when re-selecting cells across the RNA, so that the UE stays in the current RNA as much as possible, avoiding frequent handovers.
  • an embodiment of the present disclosure provides the following solution:
  • a method for cell reselection comprising:
  • the reselection parameter includes at least: a preset target reselection time period and/or a parameter of the target cell;
  • the reselection parameter further includes a parameter of the source cell, where the preset target reselection time period is greater than a basic reselection time period.
  • the step of reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell includes:
  • the preset target reselection time period is TreselectionRAT+TreselectionRNA
  • the Treselection RAT is a base reselection time period
  • the Treselection RNA is a preset reselection time offset of the cell for the second RNA.
  • the step of reselecting to the target cell according to the first parameter, the second parameter, and the reselection condition of the terminal reselecting to the target cell includes:
  • the target cell is a high-priority inter-frequency or different-system cell
  • 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
  • the target threshold is preset, the target cell is reselected, and the first parameter is Reference Signal Received Quality (RSRQ).
  • RSSQ Reference Signal Received Quality
  • the step of reselecting to the target cell includes:
  • the target cell has Squal>ThreshX, HighQ+ThreshRNA, HighQ, or Srxlev>ThreshX, HighP+ThreshRNA, HighP of the target cell, then reselect to the target cell;
  • the Squal is a cell selection signal quality value
  • Srxlev is a cell selection received signal level intensity value
  • ThreshX, HighQ+ThreshRNA HighQ is the second preset target threshold of Squal
  • ThreshX HighQ is the basic threshold of Squal
  • ThreshRNA HighQ is the threshold offset of Squal of the second RNA
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the step of reselecting to the target cell according to the first parameter, the second parameter, and the reselection condition of the terminal reselecting to the target cell includes:
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, if the second parameter of the target cell exceeds the second pre- If the target threshold is set, the target cell is reselected.
  • the step of reselecting to the target cell includes:
  • the target cell has Srxlev>ThreshX, HighP+ThreshRNA, HighP, then reselect to the target cell;
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the step of reselecting to the target cell according to the first parameter, the second parameter, and the reselection condition of the terminal reselecting to the target cell includes:
  • the source cell and the target cell are inter-frequency cells of 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 the rating is obtained.
  • the best target cell is reselected to the target cell with the best rating
  • the first parameter is the Rs of the source cell
  • the second parameter is the Rn of the target cell.
  • the source cell Rs Qmeas, s+QHyst-Qoffsettemp;
  • Target cell Rn Qmeas, n-Qoffset-Qoffsettemp-QoffsetRNA;
  • Qmeas, s is a reference signal received power (RSRP) measurement value of the source cell
  • QHyst is a measurement delay of the source cell
  • Qoffsettemp is a measurement offset of the source cell
  • n is the reference signal received power RSRP measurement value of the target cell
  • Qoffset is the first measurement offset of the target cell
  • Qoffsettemp is the second measurement offset of the target cell
  • QoffsetRNA is the measurement offset of the target cell belonging to different RNAs .
  • the step of reselecting to the target cell according to the first parameter, the second parameter, and the reselection condition of the terminal reselecting to the target cell includes:
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than a first preset threshold, if the cell selection signal quality Squal of the source cell is lower than a target And a quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, and then reselected to the target cell.
  • the step of reselecting to the target cell includes: 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 source cell is Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ
  • the target cell is Squal>ThreshX, LowQ+ThreshRNA, LowQ;
  • ThreshServing, LowQ is a basic low threshold of Squal of the source cell
  • ThreshRNA Serving, LowQ is a threshold offset of the source cell Squal set for the target cell belonging to a different RNA from the source cell
  • ThreshX, LowQ is the basic threshold of the Squal of the target cell
  • ThreshRNA and LowQ are the threshold offsets of the Squal of the target cells belonging to different RNAs;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell belonging to different RNAs.
  • the step of reselecting to the target cell according to the first parameter, the second parameter, and the reselection condition of the terminal reselecting to the target cell includes:
  • the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for the reference signal reception quality RSRQ, if the source cell selects the received signal level strength value Srxlev low After 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.
  • 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 intensity value Srxlev of the target cell exceeds a second preset target threshold, reselecting to the The steps of the target cell include:
  • the source cell has Srxlev ⁇ ThreshServing, LowP-ThreshRNA Serving, LowP or Srxlev ⁇ ThreshServing, LowP, and Srxlev>ThreshX, LowP+ThreshRNA, LowP of the target cell, reselect to the target cell;
  • ThreshServing LowP is the basic threshold of the Srxlev of the source cell, and ThreshRNA Serving, LowP is the preset offset of the Srxlev of the source cell;
  • ThreshX, LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA and LowP are preset offsets of Srxlev of the target cell.
  • the terminal obtains the threshold involved in the preset reselection time period and/or the reselection condition from the system message of the source cell; or
  • the terminal obtains the threshold involved in the preset reselection time period and/or reselection condition from the system reconfiguration message.
  • the step of reselecting to the target cell includes:
  • the reselected target cell includes multiple cells of different priorities, reselecting to the cell with the highest priority;
  • An embodiment of the present disclosure further provides a terminal, including:
  • a transceiver configured to acquire a reselection parameter when the terminal supporting the inactive state is reselected from the source cell to the target cell, where the source cell is the first radio access network notifying the cell in the regional RNA, where the target cell is a cell in the second RNA;
  • the reselection parameter includes at least: a preset target reselection time period and/or a parameter of the target cell;
  • a processor configured to reselect to the target cell according to the reselection parameter and a reselection condition that the terminal reselects to the target cell.
  • the reselection parameter further includes a parameter of the source cell, where the preset target reselection time period is greater than a normal reselection time period.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell according to the reselection parameter:
  • the preset target reselection time period is TreselectionRAT+TreselectionRNA
  • the Treselection RAT is a base reselection time period
  • the Treselection RNA is a preset reselection time offset of the cell for the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell according to the reselection parameter:
  • the target cell is a high-priority inter-frequency or different-system cell
  • 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 first parameter
  • the target threshold is preset, the target cell is reselected, and the first parameter is the reference signal receiving quality RSRQ.
  • reselecting to the target cell includes:
  • the target cell has Squal>ThreshX, HighQ+ThreshRNA, HighQ, or Srxlev>ThreshX, HighP+ThreshRNA, HighP of the target cell, then reselect to the target cell;
  • the Squal is a cell selection signal quality value
  • Srxlev is a cell selection received signal level intensity value
  • ThreshX, HighQ+ThreshRNA HighQ is the second preset target threshold of Squal
  • ThreshX HighQ is the basic threshold of Squal
  • ThreshRNA HighQ is the threshold offset of Squal of the second RNA
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold offset of Srxlev of the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, if the second parameter of the target cell exceeds the second pre- If the target threshold is set, the target cell is reselected.
  • reselecting to the target cell includes:
  • the target cell has Srxlev>ThreshX, HighP+ThreshRNA, HighP, then reselect to the target cell;
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the source cell and the target cell are inter-frequency cells of 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 the rating is obtained.
  • the best target cell is reselected to the target cell with the best rating
  • the first parameter is the Rs of the source cell
  • the second parameter is the Rn of the target cell.
  • the source cell Rs Qmeas, s+QHyst-Qoffsettemp;
  • Target cell Rn Qmeas, n-Qoffset-Qoffsettemp-QoffsetRNA;
  • s is the reference signal received power RSRP measurement value of the source cell
  • QHyst is the measurement hysteresis of the source cell
  • Qoffsettemp is the measurement offset of the source cell
  • n is the reference signal received power RSRP measurement value of the target cell
  • Qoffset is the first measurement offset of the target cell
  • Qoffsettemp is the second measurement offset of the target cell
  • QoffsetRNA is the measurement offset of the target cell belonging to different RNAs .
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than a first preset threshold, if the cell selection signal quality Squal of the source cell is lower than a target And a quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, and then reselected to the target cell.
  • the reselecting to the target cell includes: 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 source cell is Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ
  • the target cell is Squal>ThreshX, LowQ+ThreshRNA, LowQ;
  • ThreshServing LowQ is the basic low threshold of the Squal of the source cell
  • ThreshRNA Serving LowQ is the threshold offset of the Squal of the source cell set for the target cell belonging to the different cells of the source cell
  • ThreshX, LowQ is the basic threshold of the Squal of the target cell
  • ThreshRNA and LowQ are the threshold offsets of the Squal of the target cells belonging to different RNAs;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell belonging to different RNAs.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for the reference signal reception quality RSRQ, if the source cell selects the received signal level strength value Srxlev low After 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.
  • 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 intensity value Srxlev of the target cell exceeds a second preset target threshold, reselecting to the The target cell includes:
  • the source cell has Srxlev ⁇ ThreshServing, LowP-ThreshRNA Serving, LowP or Srxlev ⁇ ThreshServing, LowP, and Srxlev>ThreshX, LowP+ThreshRNA, LowP of the target cell, reselect to the target cell;
  • ThreshServing LowP is the basic threshold of the Srxlev of the source cell, ThreshRNA Serving, and LowP is the threshold offset of the Srxlev of the source cell;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell
  • the transceiver is specifically configured to obtain, from a system message of a source cell, a threshold involved in the preset reselection time period and/or a reselection condition; or
  • the thresholds involved in the preset reselection time period and/or reselection conditions are obtained from a system reconfiguration message.
  • the processor is specifically configured to: when reselecting to the target cell:
  • the reselected target cell includes multiple cells of different priorities, reselecting to the cell with the highest priority;
  • the embodiment of the present disclosure further provides a method for cell reselection, including:
  • a threshold involved in the preset reselection time period and/or the reselection condition where the preset reselection time period is that the terminal notifies the source cell in the regional RNA from the first radio access network A reselection parameter when selecting a target cell in the second RNA.
  • the step of sending a preset reselection time period and/or a threshold involved in the reselection condition to the terminal includes:
  • the threshold involved in the preset reselection period and/or reselection condition is sent to the terminal through the system reconfiguration message.
  • the embodiment of the present disclosure further provides a network device, including:
  • a transceiver configured to send, to a terminal that supports an inactive state, a threshold involved in a preset reselection time period and/or a reselection condition, where the preset reselection time period is when the terminal reselects from the source cell to the target cell Reselect the parameters.
  • the transceiver is specifically configured to send a threshold related to a preset reselection time period and/or a reselection condition to the terminal by using a system message, or send a preset reselection time to the terminal by using a radio resource control RRC connection release message.
  • the threshold involved in the segment and/or reselection condition; or the threshold involved in the preset reselection time period and/or reselection condition is sent to the terminal through the system reconfiguration message.
  • Embodiments of the present disclosure also provide a communication device comprising: a processor, a memory storing a computer program, and when the computer program is executed by the processor, performing the method as described above.
  • Embodiments of the present disclosure also provide a computer readable storage medium comprising instructions that, when executed by a computer, cause a computer to perform the method as described above.
  • the foregoing solution of the present disclosure acquires a reselection parameter when the terminal supporting the inactive state reselects from the source cell to the target cell, where the source cell is the first radio access network notifying the cell in the regional RNA, where the target cell is a cell in the second RNA; the reselection parameter at least includes: a preset target reselection time period and/or a parameter of the target cell, where the preset target reselection time period is greater than a normal reselection time period; Reselecting parameters, and reselecting conditions for the terminal to reselect to the target cell, and reselecting to the target cell.
  • the terminal does not simply determine whether the parameter of the target cell is greater than the relevant threshold, that is, reselection occurs, but at least according to the preset target reselection time greater than the normal reselection time period or the target cell.
  • cross-RNA re-selection is performed, which reduces the problem of frequent switching of RNA due to reselection parameters and re-election conditions in the related art, thereby reducing signaling caused by frequent switching of RNA. Overhead.
  • FIG. 1 is a flow chart of a method for cell reselection according to the present disclosure
  • FIG. 2 is a schematic block diagram of a terminal of the present disclosure.
  • an embodiment of the present disclosure provides a method for cell reselection, including:
  • Step 11 Acquire a reselection parameter when the terminal supporting the inactive state reselects from the source cell to the target cell, where the source cell is the first radio access network notifying the cell in the regional RNA, and the target cell is the second RNA.
  • the cell in the reselection parameter includes at least: a preset target reselection time period and/or a parameter of the target cell;
  • Step 12 Reselect to the target cell according to the reselection parameter and a reselection condition of the terminal reselecting to the target cell.
  • the embodiment of the present disclosure acquires a reselection parameter when the terminal supporting the inactive state reselects from the source cell to the target cell, where the source cell is the first radio access network notifying the cell in the regional RNA, the target cell And the second reselection time period is greater than: Reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell. Therefore, when the cross-RNA reselection cell occurs, the terminal does not simply determine whether the parameter of the target cell is greater than the relevant threshold, that is, reselection occurs, but at least according to the preset target reselection time greater than the normal reselection time period or the target cell.
  • cross-RNA re-selection is performed, which reduces the problem of frequent switching of RNA due to reselection parameters and re-election conditions in the related art, thereby reducing signaling caused by frequent switching of RNA. Overhead.
  • the reselection parameter further includes a parameter of the source cell.
  • step 12 may specifically include:
  • Step 121 Reselect to the target cell according to a preset target reselection time period and a reselection condition of the terminal reselecting to the target cell; or
  • Step 122 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 of the terminal reselecting to the target cell; or
  • Step 123 Reselect the time 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 of the terminal reselecting to the target cell.
  • Target cell Reselect the time 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 of the terminal reselecting to the target cell.
  • Target cell Reselect the time 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 of the terminal reselecting to the target cell.
  • the preset target reselection time period is Treselection RAT+Treselection RNA
  • the Treselection RAT is a base reselection time period
  • the Treselection RNA is a preset reselection time offset of the cell for the second RNA.
  • the preset target reselection time period is applicable in the following implementation manners.
  • the specific implementation of the step 121 may include:
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell has a first preset threshold of the first parameter of the source cell, and if the preset target reselection time period arrives, Then reselecting to the target cell;
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, if the preset target reselection time period arrives, Reselecting to the target cell;
  • the target cell and the source cell are inter-frequency cells of the same frequency or the same priority, rate the source cell and the target cell according to the first parameter and the second parameter, Obtaining a target cell with the best rating, if the preset target reselection time period arrives, reselecting to the target cell, the first parameter is the Rs of the source cell, and the second parameter is the target cell Rn;
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than the first preset threshold, if the preset target reselection time period arrives, the reselection is performed. To the target cell;
  • the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for the reference signal reception quality RSRQ, if the preset target reselection time period arrives, the reselection is performed. Go to the target cell.
  • the above 1211)-1215 compared with the normal reselection time period, by increasing the cell reselection time across the RNA, performing cross-RNA cell reselection according to a larger preset target reselection time period, thereby reducing the cross
  • the cell reselection frequency of RNA reduces the signaling overhead caused by cell reselection across RNA.
  • the specific implementation of the step 122 may include:
  • the target cell is a high-priority inter-frequency or different-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 When the second preset target threshold is exceeded, the target cell is reselected, and the first parameter is the reference signal receiving quality RSRQ.
  • the step of reselecting to the target cell includes:
  • the target cell has Squal>ThreshX, HighQ+ThreshRNA, HighQ, or Srxlev>ThreshX, HighP+ThreshRNA, HighP of the target cell, then reselect to the target cell;
  • the Squal is a cell selection signal quality value
  • Srxlev is a cell selection received signal level intensity value
  • ThreshX, HighQ+ThreshRNA HighQ is the second preset target threshold of Squal
  • ThreshX HighQ is the basic threshold of Squal
  • ThreshRNA HighQ is the threshold offset of Squal of the second RNA
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the threshold of the Squal of the target cell or increasing the Srxlev threshold of the target cell, that is, ThreshX, HighQ+ThreshRNA
  • HighQ is greater than ThreshX, HighQ, or ThreshX, HighP+ThreshRNA
  • HighP is greater than ThreshX, HighQ
  • cross-RNA cell reselection according to higher gates thereby reducing the frequency of cell reselection across RNA and reducing the signaling overhead caused by cell reselection across RNA.
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, if the second parameter of the target cell exceeds The second preset target threshold is reselected to the target cell.
  • the step of reselecting to the target cell includes:
  • the target cell has Srxlev>ThreshX, HighP+ThreshRNA, HighP, then reselect to the target cell;
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the target cell and the source cell are inter-frequency cells of the same frequency or the same priority
  • the source cell and the target cell are ranked according to the first parameter and the second parameter.
  • the first parameter is the Rs of the source cell
  • the second parameter is the Rn of the target cell.
  • the source cell Rs Qmeas, s+QHyst-Qoffsettemp;
  • Target cell Rn Qmeas, n-Qoffset-Qoffsettemp-QoffsetRNA;
  • s is the reference signal received power RSRP measurement value of the source cell
  • QHyst is the measurement hysteresis of the source cell
  • Qoffsettemp is the measurement offset of the source cell
  • n is the measured value of the target cell
  • Qoffset is the first measurement offset of the target cell
  • Qoffsettemp is the second measurement offset of the target cell
  • QoffsetRNA is the measured offset of the target cell belonging to different RNAs.
  • the target cell is less likely to be rated as a better cell when performing the rating, thereby reducing the frequency of terminal cross-RNA reselection and reducing the message caused by cell reselection across the RNA. Make the cost.
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than a first preset threshold, if the cell selection signal quality Squal of the source cell is low And a target quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, and then reselected to the target cell.
  • the step of reselecting to the target cell includes: 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 source cell is Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ
  • the target cell is Squal>ThreshX, LowQ+ThreshRNA, LowQ;
  • ThreshServing LowQ is the basic low threshold of the Squal of the source cell
  • ThreshRNA Serving LowQ is the threshold offset of the Squal of the source cell set for the target cell belonging to the different cells of the source cell
  • ThreshX, LowQ is the basic threshold of Squal of the target cell, and ThreshRNA and LowQ are threshold offsets of Squal belonging to different RNA target cells;
  • ThreshX, LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA and LowP are threshold offsets of Srxlev belonging to different RNA target cells.
  • the threshold of the Squal of the target cell may be increased, or the Srxlev threshold of the target cell, that is, ThreshX, may be increased.
  • LowQ+ThreshRNA LowQ is greater than ThreshX, LowQ, or ThreshX
  • LowP+ThreshRNA LowP is greater than ThreshX, LowP
  • cross-RNA cell re-election is performed according to higher gates, thereby reducing cross-RNA cell re-selection frequency and reducing cross- Signaling overhead caused by cell reselection of RNA.
  • the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for a reference signal reception quality RSRQ, if the source cell selects a received signal level strength The value Srxlev is lower than the first preset threshold, and the selected received signal level strength value Srxlev of the target cell exceeds the second preset target threshold, and then reselected to the target cell.
  • 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 intensity value Srxlev of the target cell exceeds a second preset target threshold, reselecting to the The steps of the target cell include:
  • the source cell has Srxlev ⁇ ThreshServing, LowP-ThreshRNA Serving, LowP or Srxlev ⁇ ThreshServing, LowP, and Srxlev>ThreshX, LowP+ThreshRNA, LowP of the target cell, reselect to the target cell;
  • ThreshServing LowP is the basic threshold of the Srxlev of the source cell, ThreshRNA Serving, and LowP is the threshold offset of the Srxlev of the source cell;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell
  • the cell across the RNA is performed according to a higher gate. Reselection, thereby reducing the frequency of cell reselection across RNA and reducing the signaling overhead caused by cell reselection across RNA.
  • the specific implementation of the step 123 may include:
  • the target cell is a high-priority inter-frequency or hetero-system cell
  • the source cell has a first preset threshold of the first parameter of the source cell, where the preset target re-selection time When the segment arrives, if the second parameter of the target cell exceeds the second preset target threshold, the cell is reselected to the target cell, and the first parameter is the reference signal receiving quality RSRQ.
  • the step of reselecting to the target cell includes:
  • the target cell has Squal>ThreshX, HighQ+ThreshRNA, HighQ, or Srxlev>ThreshX, HighP+ThreshRNA, HighP of the target cell, then reselect to the target cell;
  • the Squal is a cell selection signal quality value
  • Srxlev is a cell selection received signal level intensity value
  • ThreshX, HighQ+ThreshRNA HighQ is the second preset target threshold of Squal
  • ThreshX HighQ is the basic threshold of Squal
  • ThreshRNA HighQ is the threshold offset of Squal of the second RNA
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the preset target reselection time period arrives, by increasing the threshold of the Squal of the target cell, or increasing the Srxlev threshold of the target cell, that is, ThreshX, HighQ+ThreshRNA, HighQ is greater than ThreshX, HighQ, or ThreshX, HighP+ThreshRNA, HighP is greater than ThreshX, HighQ, and cross-RNA cell reselection is performed according to higher gates, thereby reducing the frequency of cross-RNA cell reselection and reducing the cross-RNA cell weight.
  • the signaling overhead caused by the selection.
  • the target cell when the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, in the preset target reselection time period Upon arrival, if the second parameter of the target cell exceeds a second preset target threshold, reselecting to the target cell.
  • the step of reselecting to the target cell includes:
  • the target cell has Srxlev>ThreshX, HighP+ThreshRNA, HighP, then reselect to the target cell;
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the preset target reselection time period arrives, by increasing the Srxlev threshold of the target cell, that is, ThreshX, HighP+Thresh RNA, HighP is greater than ThreshX, HighQ, according to the higher
  • the door is for cell reselection across RNA, thereby reducing the frequency of cell reselection across RNA and reducing the signaling overhead caused by cell reselection across RNA.
  • the target cell and the source cell are inter-frequency cells of the same frequency or the same priority, rate the source cell and the target cell according to the first parameter and the second parameter Obtaining a target cell with the best rating, and when the preset target reselection time period arrives, and reselecting the target cell with the best rating, the first parameter is the Rs of the source cell, where the The second parameter is Rn of the target cell.
  • the source cell Rs Qmeas, s+QHyst-Qoffsettemp;
  • Target cell Rn Qmeas, n-Qoffset-Qoffsettemp-QoffsetRNA;
  • s is the reference signal received power RSRP measurement value of the source cell
  • QHyst is the measurement hysteresis of the source cell
  • Qoffsettemp is the measurement offset of the source cell
  • n is the reference signal received power RSRP measurement value of the target cell
  • Qoffset is the first measurement offset of the target cell
  • Qoffsettemp is the second measurement offset of the target cell
  • QoffsetRNA is the measurement offset of the target cell belonging to different RNAs .
  • the target cell is less likely to be rated as a better cell when performing the rating, and when the target reselection time period is reached, the trans-RNA is further performed.
  • Cell reselection thereby reducing the frequency of terminal cross-RNA cell reselection and reducing signaling overhead caused by cell reselection across RNA.
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than a first preset threshold, if the cell selection signal quality Squal of the source cell is low And a target quality threshold, and when the preset target reselection time period arrives, the second parameter of the target cell exceeds a second preset target threshold, and then reselected to the target cell.
  • the steps of reselecting to the target cell include:
  • the source cell has Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ, and the target cell Squal>ThreshX, LowQ+ThreshRNA, LowQ; or
  • the source cell Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ, and the target cell Srxlev>ThreshX, LowP+ThreshRNA, LowP, reselect To the target cell;
  • ThreshServing, LowQ is a normal low threshold of Squal of a source cell set for a target cell belonging to a different RNA from the source cell
  • ThreshRNA Serving, LowQ is a threshold offset of Squal of the source cell
  • ThreshX, LowQ is the basic threshold of the Squal of the target cell
  • ThreshRNA and LowQ are the threshold offsets of the Squal of the target cells belonging to different RNAs;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell belonging to different RNAs.
  • the Squal of the source cell when the Squal of the source cell is considered, the Squal of the source cell is relatively low, and the Squal threshold of the target cell is raised, or the Srxlev threshold of the target cell is increased, that is, ThreshX, LowQ+ThreshRNA is not satisfied.
  • LowQ is greater than ThreshX, LowQ, or ThreshX, LowP+ThreshRNA
  • LowP is greater than ThreshX, LowP.
  • the target cell when the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for the reference signal reception quality RSRQ, when the preset target reselection time period arrives And 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 Srxlev of the target cell exceeds a second preset target threshold, reselecting The target cell.
  • 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 intensity value Srxlev of the target cell exceeds a second preset target threshold, reselecting to the The steps of the target cell include:
  • the source cell has Srxlev ⁇ ThreshServing, LowP-ThreshRNA Serving, LowP or Srxlev ⁇ ThreshServing, LowP, and Srxlev>ThreshX, LowP+ThreshRNA, LowP of the target cell, reselect to the target cell;
  • ThreshServing LowP is the basic threshold of the Srxlev of the source cell, ThreshRNA Serving, and LowP is the threshold offset of the Srxlev of the source cell;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell
  • the terminal obtains the threshold involved in the preset reselection time period and/or the reselection condition from the system message of the source cell; or the terminal obtains the RRC connection release message from the radio resource control.
  • the step of reselecting to the target cell includes:
  • the reselected target cell includes a plurality of cells of different priorities, reselecting to the cell with the highest priority; or reselecting to the cell where the target cell includes multiple cells of the same priority, reselecting Sorting the cells with the same priority according to the preset sorting condition, and sorting the best cells.
  • the source cell may be a serving cell in the RNA where the terminal is currently located, and the target cell may be a neighboring cell in another RNA.
  • the target cell is also a source cell.
  • the foregoing embodiments of the present disclosure are used for a cell reselection mechanism of an UE in an inactive state, by configuring an RNA-related reselection threshold and a timer (preset target reselection time period) for the UE to stay as current as possible In RNA, avoid the overhead caused by frequent RNA switching.
  • an embodiment of the present disclosure further provides a terminal, including:
  • a transceiver configured to acquire a reselection parameter when the terminal supporting the inactive state is reselected from the source cell to the target cell, where the source cell is the first radio access network notifying the cell in the regional RNA, where the target cell is a cell in the second RNA;
  • the reselection parameter includes at least: a preset target reselection time period and/or a parameter of the target cell;
  • a processor configured to reselect to the target cell according to the reselection parameter and a reselection condition that the terminal reselects to the target cell.
  • the reselection parameter further includes a parameter of the source cell, where the preset target reselection time period is greater than a normal reselection time period.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell according to the reselection parameter:
  • the preset target reselection time period is TreselectionRAT+TreselectionRNA
  • the Treselection RAT is a base reselection time period
  • the Treselection RNA is a preset reselection time offset of the cell for the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell according to the reselection parameter:
  • the target cell is a high-priority inter-frequency or different-system cell
  • 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 first parameter
  • the target threshold is preset, the target cell is reselected, and the first parameter is the reference signal receiving quality RSRQ.
  • reselecting to the target cell includes:
  • the target cell has Squal>ThreshX, HighQ+ThreshRNA, HighQ, or Srxlev>ThreshX, HighP+ThreshRNA, HighP of the target cell, then reselect to the target cell;
  • the Squal is a cell selection signal quality value
  • Srxlev is a cell selection received signal level intensity value
  • ThreshX, HighQ+ThreshRNA HighQ is the second preset target threshold of Squal
  • ThreshX HighQ is the basic threshold of Squal
  • ThreshRNA HighQ is the threshold offset of Squal of the second RNA
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a high-priority inter-frequency or different-system cell, and the source cell does not provide a threshold based on the first parameter reference signal receiving quality RSRQ, if the second parameter of the target cell exceeds the second pre- If the target threshold is set, the target cell is reselected.
  • reselecting to the target cell includes:
  • the target cell has Srxlev>ThreshX, HighP+ThreshRNA, HighP, then reselect to the target cell;
  • ThreshX, HighP+ThreshRNA HighP is the second preset target threshold of Srxlev
  • ThreshX HighP is the basic threshold of Srxlev
  • ThreshRNA HighP is the threshold shift of Srxlev of the second RNA.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the source cell and the target cell are inter-frequency cells of 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 the rating is obtained.
  • the best target cell is reselected to the target cell with the best rating
  • the first parameter is the Rs of the source cell
  • the second parameter is the Rn of the target cell.
  • the source cell Rs Qmeas, s+QHyst-Qoffsettemp;
  • Target cell Rn Qmeas, n-Qoffset-Qoffsettemp-QoffsetRNA;
  • s is the reference signal received power RSRP measurement value of the source cell
  • QHyst is the measurement hysteresis of the source cell
  • Qoffsettemp is the measurement offset of the source cell
  • n is the reference signal received power RSRP measurement value of the target cell
  • Qoffset is the first measurement offset of the target cell
  • Qoffsettemp is the second measurement offset of the target cell
  • QoffsetRNA is the measurement offset of the target cell belonging to different RNAs .
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a low-priority inter-frequency or different-system cell, and the first parameter of the source cell is lower than a first preset threshold, if the cell selection signal quality Squal of the source cell is lower than a target And a quality threshold, and the second parameter of the target cell exceeds a second preset target threshold, and then reselected to the target cell.
  • the reselecting to the target cell includes: 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 source cell is Squal ⁇ ThreshServing, LowQ-ThreshRNA Serving, LowQ or Squal ⁇ ThreshServing, LowQ
  • the target cell is Squal>ThreshX, LowQ+ThreshRNA, LowQ;
  • ThreshServing LowQ is the basic low threshold of the Squal of the source cell
  • ThreshRNA Serving LowQ is the threshold offset of the Squal of the source cell set for the target cell belonging to the different cells of the source cell
  • ThreshX, LowQ is the basic threshold of the Squal of the target cell
  • ThreshRNA and LowQ are the threshold offsets of the Squal of the target cells belonging to different RNAs;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell belonging to different RNAs.
  • the processor is specifically configured to: when reselecting to the target cell according to the reselection parameter and the reselection condition of the terminal reselecting to the target cell:
  • the target cell is a low-priority inter-frequency or different-system cell, and the source cell does not have a threshold for the reference signal reception quality RSRQ, if the source cell selects the received signal level strength value Srxlev low After 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.
  • 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 intensity value Srxlev of the target cell exceeds a second preset target threshold, reselecting to the The target cell includes:
  • the source cell has Srxlev ⁇ ThreshServing, LowP-ThreshRNA Serving, LowP or Srxlev ⁇ ThreshServing, LowP, and Srxlev>ThreshX, LowP+ThreshRNA, LowP of the target cell, reselect to the target cell;
  • ThreshServing LowP is the basic threshold of the Srxlev of the source cell, ThreshRNA Serving, and LowP is the threshold offset of the Srxlev of the source cell;
  • ThreshX LowP is the basic threshold of Srxlev of the target cell
  • ThreshRNA LowP is the threshold offset of Srxlev of the target cell
  • the transceiver is specifically configured to obtain, from a system message of a source cell, a threshold involved in the preset reselection time period and/or a reselection condition; or
  • the thresholds involved in the preset reselection time period and/or reselection conditions are obtained from a system reconfiguration message.
  • the processor is specifically configured to: when reselecting to the target cell:
  • the reselected target cell includes multiple cells of different priorities, reselecting to the cell with the highest priority;
  • the embodiment of the terminal is a device corresponding to the foregoing method, and all the implementation manners in the foregoing method embodiments are applicable to the embodiment of the terminal, and the same technical effects can be achieved.
  • An embodiment of the present disclosure further provides a method for cell reselection, including:
  • the preset reselection time period is that the terminal notifies the source cell in the regional RNA from the first radio access network A reselection parameter when the target cell in the second RNA is selected, the preset target reselection time period being greater than the normal reselection time period.
  • the step of transmitting a threshold involved in the preset reselection time period and/or the reselection condition to the terminal includes: sending, by using a system message, a preset reselection time period and/or a threshold involved in the reselection condition to the terminal; or Transmitting, by the radio resource control, the RRC connection release message to the terminal, the preset reselection time period and/or the threshold involved in the reselection condition; or sending the preset reselection time period and/or the reselection condition to the terminal by using the system reconfiguration message The threshold involved.
  • An embodiment of the present disclosure further provides a network device, including:
  • a transceiver configured to send, to a terminal that supports an inactive state, a threshold involved in a preset reselection time period and/or a reselection condition, where the preset reselection time period is when the terminal reselects from the source cell to the target cell Reselecting the parameter, the preset target reselection time period is greater than the normal reselection time period.
  • the transceiver is specifically configured to send a threshold related to a preset reselection time period and/or a reselection condition to the terminal by using a system message, or send a preset reselection time to the terminal by using a radio resource control RRC connection release message.
  • the threshold involved in the segment and/or reselection condition; or the threshold involved in the preset reselection time period and/or reselection condition is sent to the terminal through the system reconfiguration message.
  • the embodiment of the network device is a device corresponding to the foregoing method, and all the implementation manners in the foregoing method embodiments are applicable to the embodiment of the network device, and the same technical effect can be achieved.
  • Embodiments of the present disclosure also provide a communication device comprising: a processor, a memory storing a computer program, and when the computer program is executed by the processor, performing the method as described above.
  • the processor and the memory are connected through a bus or an interface.
  • the communication device can be a network device, such as a base station, or a terminal.
  • Embodiments of the present disclosure also provide a computer readable storage medium comprising instructions that, when executed by a computer, cause a computer to perform the method as described above.

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Abstract

本公开的实施例提供一种小区重选的方法、终端及网络设备。小区重选的方法包括：获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。

Description

小区重选的方法、终端及网络设备
相关申请的交叉引用
本申请主张在2017年11月9日在中国提交的中国专利申请号No.201711097614.6的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信领域，特别是指一种小区重选的方法、终端及网络设备。
背景技术
5G定义了一种新的用户终端(User Equipment，UE)状态，即inactive(非激活态)。UE处于这种状态下时，无线资源控制(Radio Resource Control，RRC)的连接被释放，但是核心网的连接还存在、核心网认为该UE还处于连接态。
对于非激活态的UE，当它所处的RNA(RAN Notification Area，无线接入网通知区域)产生变化时，新gNB(节点B或者目标基站)需要向源gNB获取UE的上下文信息。
因此，造成UE频繁更换RNA带来较大的信令开销。
发明内容
本公开提供了一种小区重选的方法、终端及网络设备。对于支持非激活状态(inactive)的小区重选机制，终端在跨RNA重选小区时，为其配置RNA相关的重选条件和重选时间，使得UE尽量待在当前的RNA里，避免频繁切换RNA，并避免由于切换RNA引起的开销。
为解决上述技术问题，本公开的实施例提供如下方案：
一种小区重选的方法，包括：
获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标 小区的参数；
根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述重选参数还包括所述源小区的参数，所述预设目标重选时间段大于基础重选时间段。
其中，根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述预设目标重选时间段、所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。
其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
在所述目标小区为高优先级的异频或者异系统小区，且所述源小区具有所述源小区的第一参数的第一预设阈值，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量(Reference Signal Received Quality，RSRQ)。
其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区的步骤包括：
如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值， ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区步骤包括：
在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
其中，源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
其中，Qmeas,s为源小区的参考信号接收功率(Reference Signal Receiving Power，RSRP)测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标 小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区Squal的阈值偏移量；
ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号 电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区的步骤包括：
如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的预设偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的预设偏移量。
其中，终端从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
终端从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
终端从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉及的阈值。
其中，重选到所述目标小区的步骤包括：
在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者
在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小区。
本公开的实施例还提供一种终端，包括：
收发机，用于获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；
处理器，用于根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述重选参数还包括所述源小区的参数，所述预设目标重选时间段大于正常重选时间段。
其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述预设目标重选时间段、所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。
其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为高优先级的异频或者异系统小区，且且所述源小区具有所述源小区的第一参数的第一预设阈值，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量RSRQ。
其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区包括：
如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值， ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
其中，源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区的Squal的阈值偏移量；
ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区包括：
如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的阈值偏移量。
其中，所述收发机具体用于从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉及的阈值。
其中，所述处理器在重选到所述目标小区时，具体用于：
在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者
在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小区。
本公开实施例还提供一种小区重选的方法，包括：
向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从第一无线接入网通知区域RNA中的源小区重选到第二RNA中的目标小区时的重选参数。
其中，向终端发送预设重选时间段和/或重选条件中涉及的阈值的步骤包括：
通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者
通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者
通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及 的阈值。
本公开实施例还提供一种网络设备，包括：
收发机，用于向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从源小区重选到目标小区时的重选参数。
其中，所述收发机具体用于通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及的阈值。
本公开的实施例还提供一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如上所述的方法。
本公开的实施例还提供一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
本公开的上述方案至少包括以下有益效果：
本公开的上述方案，获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数，所述预设目标重选时间段大于正常重选时间段；根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区。从而使得终端在发生跨RNA重选小区时，不是简单的判断目标小区的参数是否大于相关门限即发生重选，而是至少根据大于正常重选时间段的预设目标重选时间或者目标小区的重选参数，满足一定条件时，再进行跨RNA的重选，减少了由于相关技术中的重选参数和重选条件引起的频繁切换RNA的问题，从而减少了由于频繁切换RNA引起的信令开销。
附图说明
图1为本公开的小区重选的方法的流程图；
图2为本公开的终端的模块架构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
如图1所示，本公开的实施例提供一种小区重选的方法，包括：
步骤11，获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；
步骤12，根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
本公开的该实施例，获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的第二参数，所述预设目标重选时间段大于正常重选时间段；根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区。从而使得终端在发生跨RNA重选小区时，不是简单的判断目标小区的参数是否大于相关门限即发生重选，而是至少根据大于正常重选时间段的预设目标重选时间或者目标小区的重选参数，满足一定条件时，再进行跨RNA的重选，减少了由于相关技术中的重选参数和重选条件引起的频繁切换RNA的问题，从而减少了由于频繁切换RNA引起的信令开销。
本公开的该实施例中，所述重选参数还包括所述源小区的参数。
相应的，上述步骤12具体可以包括：
步骤121，根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
步骤122，根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
步骤123，根据所述预设目标重选时间段、所述源小区的第一参数、所 述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，该步骤121以及步骤123中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。该预设目标重选时间段在以下各实现方式中均适用。
本公开的一具体实施例中，该步骤121的具体实现可以包括：
1211)在所述目标小区为高优先级的异频或者异系统小区，且所述源小区具有所述源小区的第一参数的第一预设阈值，如果预设目标重选时间段到达，则重选到所述目标小区；
1212)在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果预设目标重选时间段到达，则重选到所述目标小区；
1213)在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，如果预设目标重选时间段到达，则重选到所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn；
1214)在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果预设目标重选时间段到达，则重选到所述目标小区；
1215)在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果预设目标重选时间段到达，则重选到所述目标小区。
上述1211)-1215)，与正常重选时间段相比，通过增大跨RNA的小区重选时间，按照较大的预设目标重选时间段进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
本公开的一具体实施例中，该步骤122的具体实现可以包括：
1221)在所述目标小区为高优先级的异频或者异系统小区，且且所述源小区具有所述源小区的第一参数的第一预设阈值，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量RSRQ。
其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区的步骤包括：
如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
这里，在考虑了源小区的RSRQ的情况下，通过提高目标小区的Squal的门限，或者提高目标小区的Srxlev门限，即ThreshX,HighQ+ThreshRNA,HighQ大于ThreshX,HighQ，或者ThreshX,HighP+ThreshRNA,HighP大于ThreshX,HighQ，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
1222)，在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
这里，在不考虑源小区的RSRQ的情况下，通过提高目标小区的Srxlev门限，即ThreshX,HighP+ThreshRNA,HighP大于ThreshX,HighQ，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
1223)，在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
其中，源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
Qmeas,n是目标小区的测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
这里，通过降低目标小区的Rn，从而使得目标小区在进行评级时，被评为较好的小区的可能性降低，从而降低终端跨RNA重选的频率，减少跨RNA的小区重选引起的信令开销。
1224)，在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或 者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区的Squal的阈值偏移量；
ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA目标小区的Squal的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA目标小区的Srxlev的阈值偏移量。
这里，在考虑源小区的Squal的情况下，源小区的Squal比较低的情况下，不能满足终端的需求时，并通过提高目标小区的Squal的门限，或者提高目标小区的Srxlev门限，即ThreshX,LowQ+ThreshRNA,LowQ大于ThreshX,LowQ，或者ThreshX,LowP+ThreshRNA,LowP大于ThreshX,LowP，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
1225)，在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区的步骤包括：
如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA  Serving,LowP为源小区的Srxlev的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的阈值偏移量。
这里，在考虑源小区的Srxlev的情况下，源小区的Srxlev比较低的情况下，不能满足终端的需求时，并通过提高目标小区的Srxlev的门限，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
本公开的一具体实施例中，该步骤123的具体实现可以包括：
1231)在所述目标小区为高优先级的异频或者异系统小区，且且所述源小区具有所述源小区的第一参数的第一预设阈值，在所述预设目标重选时间段到达时，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量RSRQ。
其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区的步骤包括：
如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
这里，在考虑了源小区的RSRQ的情况下，在所述预设目标重选时间段到达时，通过提高目标小区的Squal的门限，或者提高目标小区的Srxlev门限，即ThreshX,HighQ+ThreshRNA,HighQ大于ThreshX,HighQ，或者ThreshX,HighP+ThreshRNA,HighP大于ThreshX,HighQ，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的 小区重选引起的信令开销。
1232)，在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，在所述预设目标重选时间段到达时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
这里，在不考虑源小区的RSRQ的情况下，在所述预设目标重选时间段到达时，通过提高目标小区的Srxlev门限，即ThreshX,HighP+ThreshRNA,HighP大于ThreshX,HighQ，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
1233)，在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，在所述预设目标重选时间段到达时，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
其中，源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
这里，通过降低目标小区的Rn，从而使得目标小区在进行评级时，被评为较好的小区的可能性降低，并在在所述预设目标重选时间段到达时，再进行跨RNA的小区重选，从而降低终端跨RNA小区重选的频率，减少跨RNA的小区重选引起的信令开销。
1234)，在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且在所述预设目标重选时间段到达时，所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，在所述预设目标重选时间段到达时，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
在所述预设目标重选时间段到达时，如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
在所述预设目标重选时间段到达时，源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区的Squal的正常低阈值，ThreshRNA Serving,LowQ为源小区的Squal的阈值偏移量；
ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
这里，在考虑源小区的Squal的情况下，源小区的Squal比较低，不能满足终端的需求时，并通过提高目标小区的Squal的门限，或者提高目标小区的Srxlev门限，即ThreshX,LowQ+ThreshRNA,LowQ大于ThreshX,LowQ，或者ThreshX,LowP+ThreshRNA,LowP大于ThreshX,LowP，在所述预设目标重选时间段到达时，按照较高的门限进行跨RNA的小区重选，从而减少了 跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
1235)，在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，在所述预设目标重选时间段到达时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区的步骤包括：
如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的阈值偏移量。
这里，在考虑源小区的Srxlev的情况下，源小区的Srxlev比较低的情况下，不能满足终端的需求时，在所述预设目标重选时间段到达时，并通过提高目标小区的Srxlev的门限，按照较高的门了进行跨RNA的小区重选，从而减少了跨RNA的小区重选频率，减少跨RNA的小区重选引起的信令开销。
另外，本公开的上述实施例中，终端从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者终端从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者终端从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉及的阈值。
本公开的上述实施例中，重选到所述目标小区的步骤包括：
在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小 区。
本公开的上述实施例中，源小区可以是终端当前所处RNA中的服务小区，目标小区可以是另一RNA中的邻小区，当然在有些情况下，该目标小区也是源小区。本公开的上述各实施例用于非激活状态的UE的小区重选机制，通过为其配置RNA相关的重选门限和定时器(预设目标重选时间段)，使得UE尽量待在当前的RNA里，避免频繁切换RNA引起的开销。
如图2所示，本公开的实施例还提供一种终端，包括：
收发机，用于获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；
处理器，用于根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述重选参数还包括所述源小区的参数，所述预设目标重选时间段大于正常重选时间段。
其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
根据所述预设目标重选时间段、所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
其中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。
其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为高优先级的异频或者异系统小区，且且所述源小区具 有所述源小区的第一参数的第一预设阈值，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量RSRQ。
其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区包括：
如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
其中，源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区的Squal的阈值偏移量；
ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区包括：
如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的阈值偏移量；
ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的阈值偏移量。
其中，所述收发机具体用于从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉及的阈值。
其中，所述处理器在重选到所述目标小区时，具体用于：
在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者
在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小区。
需要说明的是，该终端的实施例是与上述方法对应的设备，上述方法实施例中的所有实现方式均适用于该终端的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种小区重选的方法，包括：
向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从第一无线接入网通知区域RNA中的源小区重选到第二RNA中的目标小区时的重选参数，所述预设目标重选时间段大于正常重选时间段。
其中，向终端发送预设重选时间段和/或重选条件中涉及的阈值的步骤包括：通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及的阈值。
本公开的实施例还提供一种网络设备，包括：
收发机，用于向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从源小区重选到目标小区时的重选参数，所述预设目标重选时间段大于正常重选时间段。
其中，所述收发机具体用于通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及的阈值。
需要说明的是，该网络设备的实施例是与上述方法对应的设备，上述方法实施例中的所有实现方式均适用于该网络设备的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如上所述的方法。其中，处理器、存储器通过总线或者接口连接。该通信设备可以是网络设备，如基 站，也可以是终端。
本公开的实施例还提供一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
以上所述是本公开的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (38)

  1. 一种小区重选的方法，包括：
    获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；
    根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
  2. 根据权利要求1所述的小区重选的方法，其中，所述重选参数还包括所述源小区的参数，所述预设目标重选时间段大于基础重选时间段。
  3. 根据权利要求2所述的小区重选的方法，其中，根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
    根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
    根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
    根据所述预设目标重选时间段、所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
  4. 根据权利要求3所述的小区重选的方法，其中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
    其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。
  5. 根据权利要求4所述的小区重选的方法，其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
    在所述目标小区为高优先级的异频或者异系统小区，且所述源小区具有所述源小区的第一参数的第一预设阈值，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接 收质量RSRQ。
  6. 根据权利要求5所述的小区重选的方法，其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区的步骤包括：
    如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
    其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
    ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
    ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
  7. 根据权利要求4所述的小区重选的方法，其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区步骤包括：
    在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
  8. 根据权利要求7所述的小区重选的方法，其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
    如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
    其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
  9. 根据权利要求4所述的小区重选的方法，其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
    在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
  10. 根据权利要求9所述的小区重选的方法，其中，
    源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
    目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
    其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
    Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
  11. 根据权利要求4所述的小区重选的方法，其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
    在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
  12. 根据权利要求11所述的小区重选的方法，其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区的步骤包括：
    如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
    源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
    其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA  Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区Squal的阈值偏移量；
    ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
    ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
  13. 根据权利要求4所述的小区重选的方法，其中，根据所述第一参数、所述第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区的步骤包括：
    在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
  14. 根据权利要求13所述的小区重选的方法，其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区的步骤包括：
    如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
    其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的预设偏移量；
    ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的预设偏移量。
  15. 根据权利要求3所述的小区重选的方法，其中，终端从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
    终端从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
    终端从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉 及的阈值。
  16. 根据权利要求1所述的小区重选的方法，其中，重选到所述目标小区的步骤包括：
    在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者
    在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小区。
  17. 一种终端，包括：
    收发机，用于获取支持非激活状态的终端从源小区重选到目标小区时的重选参数，所述源小区为第一无线接入网通知区域RNA中的小区，所述目标小区为第二RNA中的小区；所述重选参数至少包括：预设目标重选时间段和/或所述目标小区的参数；
    处理器，用于根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区。
  18. 根据权利要求17所述的终端，其中，所述重选参数还包括所述源小区的参数，所述预设目标重选时间段大于正常重选时间段。
  19. 根据权利要求18所述的终端，其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    根据预设目标重选时间段和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
    根据所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区；或者
    根据所述预设目标重选时间段、所述源小区的第一参数、所述目标小区的第二参数和终端重选到所述目标小区的重选条件，重选到所述目标小区。
  20. 根据权利要求19所述的终端，其中，所述预设目标重选时间段为TreselectionRAT+TreselectionRNA；
    其中，TreselectionRAT为基础重选时间段，TreselectionRNA为针对第二RNA的小区的预设重选时间偏移量。
  21. 根据权利要求20所述的终端，其中，所述处理器在根据所述重选参数以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    在所述目标小区为高优先级的异频或者异系统小区，且且所述源小区具有所述源小区的第一参数的第一预设阈值，，如果所述目标小区的第二参数超过第二预设目标阈值时，则重选到所述目标小区，所述第一参数为参考信号接收质量RSRQ。
  22. 根据权利要求21所述的终端，其中，如果所述目标小区的第二参数超过第二预设阈值时，则重选到所述目标小区包括：
    如果目标小区的Squal>ThreshX,HighQ+ThreshRNA,HighQ，或者目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
    其中，所述Squal为小区选择信号质量值，Srxlev为小区选择接收信号电平强度值；
    ThreshX,HighQ+ThreshRNA,HighQ为Squal的第二预设目标阈值，ThreshX,HighQ为Squal的基础阈值，ThreshRNA,HighQ为第二RNA的Squal的阈值偏移量；
    ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
  23. 根据权利要求20所述的终端，其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    在所述目标小区为高优先级的异频或者异系统小区，且所述源小区没有提供基于第一参数参考信号接收质量RSRQ的阈值时，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
  24. 根据权利要求23所述的终端，其中，如果所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
    如果目标小区的Srxlev>ThreshX,HighP+ThreshRNA,HighP，则重选到所述目标小区；
    其中，ThreshX,HighP+ThreshRNA,HighP为Srxlev的第二预设目标阈值，ThreshX,HighP为Srxlev的基础阈值，ThreshRNA,HighP为第二RNA的Srxlev的阈值偏移量。
  25. 根据权利要求20所述的终端，其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    在所述目标小区与所述源小区为同频或相同优先级的异频小区时，根据所述第一参数和所述第二参数对所述源小区和所述目标小区进行评级，得到评级最好的目标小区，并重选到评级最好的所述目标小区，所述第一参数为所述源小区的Rs，所述第二参数为所述目标小区的Rn。
  26. 根据权利要求25所述的终端，其中，
    源小区Rs＝Qmeas,s+QHyst-Qoffsettemp；
    目标小区Rn＝Qmeas,n-Qoffset-Qoffsettemp-QoffsetRNA；
    其中，Qmeas,s为源小区的参考信号接收功率RSRP测量值，QHyst为源小区的测量迟滞，Qoffsettemp为源小区的测量偏置；
    Qmeas,n是目标小区的参考信号接收功率RSRP测量值，Qoffset为目标小区的第一测量偏置，Qoffsettemp为目标小区的第二测量偏置，QoffsetRNA为属于不同RNA的目标小区的测量偏移量。
  27. 根据权利要求20所述的终端，其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    在所述目标小区为低优先级的异频或者异系统小区，且所述源小区的第一参数低于第一预设阈值时，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区。
  28. 根据权利要求27所述的终端，其中，如果所述源小区的小区选择信号质量Squal低于一目标质量阈值，且所述目标小区的第二参数超过第二预设目标阈值，则重选到所述目标小区包括：
    如果源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或 者Squal<ThreshServing,LowQ，且目标小区的Squal>ThreshX,LowQ+ThreshRNA,LowQ；或者
    源小区的Squal<ThreshServing,LowQ-ThreshRNA Serving,LowQ或者Squal<ThreshServing,LowQ，且目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
    其中，ThreshServing,LowQ为源小区的Squal的基础低阈值，ThreshRNA Serving,LowQ为针对与源小区属于不同RNA的目标小区设置的源小区的Squal的阈值偏移量；
    ThreshX,LowQ为目标小区的Squal的基础阈值，ThreshRNA,LowQ为属于不同RNA的目标小区的Squal的阈值偏移量；
    ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为属于不同RNA的目标小区的Srxlev的阈值偏移量。
  29. 根据权利要求20所述的终端，其中，所述处理器在根据所述重选参数，以及终端重选到所述目标小区的重选条件，重选到所述目标小区时，具体用于：
    在所述目标小区为对于低优先级的异频或者异系统小区，且所述源小区的没有针对参考信号接收质量RSRQ的阈值时，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，则重选到所述目标小区。
  30. 根据权利要求29所述的终端，其中，如果所述源小区的选择接收信号电平强度值Srxlev低于第一预设阈值，且所述目标小区的选择接收信号电平强度值Srxlev超过第二预设目标阈值，重选到所述目标小区包括：
    如果所述源小区的Srxlev<ThreshServing,LowP-ThreshRNA Serving,LowP或者Srxlev<ThreshServing,LowP，且所述目标小区的Srxlev>ThreshX,LowP+ThreshRNA,LowP，则重选到所述目标小区；
    其中，ThreshServing,LowP为源小区的Srxlev的基础阈值，ThreshRNA Serving,LowP为源小区的Srxlev的阈值偏移量；
    ThreshX,LowP为目标小区的Srxlev的基础阈值，ThreshRNA,LowP为目标小区的Srxlev的阈值偏移量。
  31. 根据权利要求19所述的终端，其中，所述收发机具体用于从源小区的系统消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
    从无线资源控制RRC连接释放消息中获得所述预设重选时间段和/或重选条件中涉及的阈值；或者
    从系统重配置消息中获得所述预设重选时间段和/或重选条件中涉及的阈值。
  32. 根据权利要求17所述的终端，其中，所述处理器在重选到所述目标小区时，具体用于：
    在重选到的所述目标小区包括多个不同优先级的小区时，重选到优先级最高的小区；或者
    在重选到所述目标小区包括多个相同优先级的小区时，重选到按照预设排序条件对多个相同优先级的小区进行排序后，排序最好的小区。
  33. 一种小区重选的方法，包括：
    向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从第一无线接入网通知区域RNA中的源小区重选到第二RNA中的目标小区时的重选参数。
  34. 根据权利要求33所述的小区重选的方法，其中，向终端发送预设重选时间段和/或重选条件中涉及的阈值的步骤包括：
    通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者
    通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者
    通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及的阈值。
  35. 一种网络设备，包括：
    收发机，用于向支持非激活状态的终端发送预设重选时间段和/或重选条件中涉及的阈值，所述预设重选时间段是终端从源小区重选到目标小区时的重选参数。
  36. 根据权利要求35所述的小区重选的方法，其中，所述收发机具体用 于通过系统消息中向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过无线资源控制RRC连接释放消息向终端发送预设重选时间段和/或重选条件中涉及的阈值；或者通过系统重配置消息向终端发送预设重选时间段和/或重选条件中涉及的阈值。
  37. 一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如权利要求1-16任一项所述的方法，或者33或34所述的方法。
  38. 一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如权利要求1-16任一项所述的方法，或者33或34所述的方法。
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