WO2022012524A1 - 小区重选方法、装置、终端及网络节点 - Google Patents

小区重选方法、装置、终端及网络节点 Download PDF

Info

Publication number
WO2022012524A1
WO2022012524A1 PCT/CN2021/106000 CN2021106000W WO2022012524A1 WO 2022012524 A1 WO2022012524 A1 WO 2022012524A1 CN 2021106000 W CN2021106000 W CN 2021106000W WO 2022012524 A1 WO2022012524 A1 WO 2022012524A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency point
information
type
frequency
slice
Prior art date
Application number
PCT/CN2021/106000
Other languages
English (en)
French (fr)
Inventor
范江胜
Original Assignee
大唐移动通信设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Publication of WO2022012524A1 publication Critical patent/WO2022012524A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/087—Reselecting an access point between radio units of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a cell reselection method, device, terminal, and network node.
  • the application of slicing on the terminal side adopts the principle of registering first and then initiating services.
  • the types of slices supported by different frequency points on the RAN (Radio Access Network) side may vary due to different operators' deployment.
  • the terminal side The cell reselection behavior can only determine the target cell according to the frequency priority information and cell signal strength configured on the network side. Even if the dedicated frequency priority configured for the terminal on the network side considers the Allowed NSSAI information registered by the terminal, the terminal cannot Know in advance which slice types (Configured NSSAI) configured by the terminal support are supported by the selected target reselection cell. If the target cell selected by the terminal does not support the slice that the terminal intends to use, the service of the terminal will be interrupted or it will take more time to reselect to the terminal. on the cell that supports its slice service.
  • the purpose of the present disclosure is to provide a cell reselection method, device, terminal and network node, so as to solve the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art.
  • an embodiment of the present disclosure provides a cell reselection method, which is applied to a terminal, including:
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the determining the target reselection cell according to the reference information includes:
  • a frequency point in the frequency point set whose priority is higher than that of the current service frequency point is acquired as the first type of frequency point, and the frequency point of the first type is divided from the frequency point set The remaining frequency points outside are used as the second type frequency points;
  • the corresponding The cell is used as the target reselection cell;
  • the cell corresponding to the second type of frequency point when the signal quality parameter value of the cell corresponding to the current serving frequency point is lower than the first threshold, start the measurement of the second type of frequency point, and at the second type of frequency point In the case that the signal quality parameter value of the cell corresponding to the point satisfies the reselection criterion, the cell corresponding to the second type of frequency point is used as the target reselection cell.
  • the meeting the reselection criteria includes at least one of the following situations:
  • the signal quality parameter value of the cell corresponding to the first type of frequency point is greater than or equal to the second threshold, determine that the first type of frequency point satisfies the reselection criterion
  • the signal quality parameter value of the cell corresponding to the second type of frequency is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency is less than or equal to the fourth threshold, and the maintenance duration reaches the first duration , determine that the second type of frequency points meet the reselection criteria; or,
  • acquiring a frequency point with a priority level higher than that of the current service frequency point in the frequency point set as the first type of frequency point including:
  • the reference information determine the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point;
  • the first type of frequency points are acquired.
  • the priority level of the current service frequency point is consistent with the priority level of the same frequency point
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or,
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • determining, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point including:
  • the identification information of all slice types supported by the frequency point is included in the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is lower than or equal to the current service frequency point the priority of the point; or,
  • the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point the priority level; or,
  • the first intersection is the intersection between the identification information of all slice types supported by the frequency and the preset slice type identification information
  • the second intersection is all the slices supported by the current serving frequency The intersection between the identification information of the type and the preset slice type identification information.
  • the number of elements of the first intersection is 0; and/or,
  • the number of elements of the second intersection is 0; and /or
  • the number of elements of the first intersection and the second intersection is 0.
  • determining the level between the priority level of the frequency point and the priority level of the current service frequency point includes:
  • the frequency point priority information determine the level between the priority level of the frequency point and the priority level of the current service frequency point; Or, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point.
  • determining, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point including:
  • the identification information of all slice types supported by the frequency point is included in the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is lower than or equal to the current service frequency point the priority of the point; or,
  • the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point the priority level; or,
  • the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point are determined.
  • the frequency point set is obtained according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set.
  • Type priority of each slice type supported by each frequency point in the point set including:
  • the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determine whether the type priority of the first slice type corresponds to the second identification information
  • the type priorities are the same, and the type priority level of the first slice type is obtained according to the second identification information and the type priority information; or,
  • the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information The preset priority of the type priority of each slice type;
  • the first slice type is any slice type supported by the frequency point.
  • determining the priority level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point according to the type priority level including:
  • the type priority of at least one slice type in all the slice types supported by the frequency point is higher than the highest type priority corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority level of the frequency point higher than the priority level of the current service frequency point; or,
  • the highest type priority corresponding to all the slice types supported by the frequency is the same as the highest type priority corresponding to all the slices supported by the frequency of the current serving cell
  • compare the times corresponding to all the slice types supported by the frequency The level between the high type priority level and the next highest type priority level corresponding to all slice types supported by the current serving cell frequency point, according to the comparison result to determine the level between the priority level of the frequency point and the priority level of the current service frequency point ;or,
  • the highest type priority level corresponding to all the slice types supported by the frequency point is the same as the highest type priority level corresponding to all the slice types supported by the frequency point of the current serving cell, determine the frequency point priority information according to the frequency point priority information.
  • the highest type priority corresponding to all slice types supported by the frequency is the same as the highest type priority corresponding to all slices supported by the frequency of the current serving cell, according to the number of all slice types supported by the frequency With the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point; or,
  • the priority of the frequency is lower than the frequency The priority of the current service frequency point.
  • determining the priority level of the frequency point and the priority level of the current service frequency point according to the comparison result includes:
  • the comparison result indicates that the priority of the next highest type corresponding to all the slice types supported by the frequency is lower than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority of the frequency The level is lower than the priority level of the current service frequency point;
  • the priority of the frequency is equal to the priority level of the current serving frequency point; or, when the comparison result indicates that the priority level of the next highest type corresponding to all the slice types supported by the frequency point is the next highest type corresponding to all the slice types supported by the frequency point of the current serving cell. In the case of the same priority, perform at least one preset operation until the type priority level corresponding to the frequency point and the type priority level corresponding to the frequency point of the current serving cell are compared, or the priority level of the frequency point is confirmed. The level is equal to the priority level of the current service frequency point;
  • the preset operation includes comparing the type priorities corresponding to all the slice types supported by the frequency point and sorting the type priority level at the nth position in the type priority level corresponding to all the slice types supported by the current service frequency point. Sorted in the nth place between the high and low priority of the type; n is an integer greater than 2.
  • the method further includes:
  • one target reselection cell is selected from the at least two target reselection cells as the final target reselection cell;
  • the first preset rule includes at least one of the following rules:
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of cells included in the first type frequency point is 1, the The only cell included in the first type of frequency points is used as the final target reselection cell;
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of the first type frequency point is at least one, the at least one first type frequency point In the case where the total number of cells included in the frequency point of the type is at least two, according to the second preset rule, select one cell from the cells included in the at least one frequency point of the first type as the final target reselection cell;
  • a target reselection cell is selected as the final target reselection cell.
  • the second preset rule includes at least one of the following rules:
  • the target reselection cell is used as the final target reselection cell
  • the preset frequency points refer to the frequency points corresponding to the at least two target reselection cells respectively.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the receiving the first preset information sent by the first network node includes:
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information; when the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the determining the target reselection cell according to the reference information includes:
  • the target reselection cell is determined according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • the embodiment of the present disclosure also provides a cell reselection method, which is applied to the first network node, including:
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and the 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the sending the first preset information to the terminal includes:
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • An embodiment of the present disclosure also provides a cell reselection method, which is applied to a second network node, including:
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • the second preset information includes: preset slice type identification information related to cell selection or reselection of the terminal;
  • the second network node is a mobility management function AMF, a unified data management platform UDM or a session management function SMF.
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • An embodiment of the present disclosure further provides a terminal, including a memory, a processor, a transceiver, and a computer program stored on the memory and running on the processor; the processor implements the following when executing the program step:
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the processor is specifically used for:
  • a frequency point in the frequency point set whose priority is higher than that of the current service frequency point is acquired as the first type of frequency point, and the frequency point of the first type is divided from the frequency point set The remaining frequency points outside are used as the second type frequency points;
  • the corresponding The cell is used as the target reselection cell;
  • the cell corresponding to the second type of frequency point when the signal quality parameter value of the cell corresponding to the current serving frequency point is lower than the first threshold, start the measurement of the second type of frequency point, and at the second type of frequency point In the case that the signal quality parameter value of the cell corresponding to the point satisfies the reselection criterion, the cell corresponding to the second type of frequency point is used as the target reselection cell.
  • the meeting the reselection criteria includes at least one of the following situations:
  • the signal quality parameter value of the cell corresponding to the first type of frequency point is greater than or equal to the second threshold, determine that the first type of frequency point satisfies the reselection criterion
  • the signal quality parameter value of the cell corresponding to the second type of frequency is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency is less than or equal to the fourth threshold, and the maintenance duration reaches the first duration , determine that the second type of frequency points meet the reselection criteria; or,
  • the processor is specifically used for:
  • the reference information determine the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point;
  • the first type of frequency points are acquired.
  • the same frequency point as the current service frequency point exists in the frequency point set, and the priority level of the current service frequency point is consistent with the priority level of the same frequency point; or,
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or,
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the processor is specifically used for:
  • the identification information of all slice types supported by the frequency point is included in the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is lower than or equal to the current service frequency point the priority of the point; or,
  • the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point the priority level; or,
  • the first intersection is the intersection between the identification information of all slice types supported by the frequency and the preset slice type identification information
  • the second intersection is all the slices supported by the current serving frequency The intersection between the identification information of the type and the preset slice type identification information.
  • the number of elements of the first intersection is 0; and/or,
  • the number of elements of the second intersection is 0; and /or
  • the number of elements of the first intersection and the second intersection is 0.
  • the processor is specifically used for:
  • the frequency point priority information determine the level between the priority level of the frequency point and the priority level of the current service frequency point; Or, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point.
  • the processor is specifically used for:
  • the identification information of all slice types supported by the frequency point is included in the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is lower than or equal to the current service frequency point the priority of the point; or,
  • the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point the priority level; or,
  • the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point are determined.
  • the processor is specifically used for:
  • the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determine whether the type priority of the first slice type corresponds to the second identification information
  • the type priorities are the same, and the type priority level of the first slice type is obtained according to the second identification information and the type priority information; or,
  • the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information The preset priority of the type priority of each slice type;
  • the first slice type is any slice type supported by the frequency point.
  • the processor is specifically used for:
  • the type priority of at least one slice type in all the slice types supported by the frequency point is higher than the highest type priority corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority level of the frequency point higher than the priority level of the current service frequency point; or,
  • the highest type priority corresponding to all the slice types supported by the frequency is the same as the highest type priority corresponding to all the slices supported by the frequency of the current serving cell
  • compare the times corresponding to all the slice types supported by the frequency The level between the high type priority level and the next highest type priority level corresponding to all slice types supported by the current serving cell frequency point, according to the comparison result to determine the level between the priority level of the frequency point and the priority level of the current service frequency point ;or,
  • the highest type priority level corresponding to all the slice types supported by the frequency point is the same as the highest type priority level corresponding to all the slice types supported by the frequency point of the current serving cell, determine the frequency point priority information according to the frequency point priority information.
  • the highest type priority corresponding to all slice types supported by the frequency is the same as the highest type priority corresponding to all slices supported by the frequency of the current serving cell, according to the number of all slice types supported by the frequency With the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point; or,
  • the priority of the frequency is lower than the frequency The priority of the current service frequency point.
  • the processor is specifically used for:
  • the comparison result indicates that the priority of the next highest type corresponding to all the slice types supported by the frequency is lower than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority of the frequency The level is lower than the priority level of the current service frequency point;
  • the priority of the frequency is equal to the priority level of the current serving frequency point; or, when the comparison result indicates that the priority level of the next highest type corresponding to all the slice types supported by the frequency point is the next highest type corresponding to all the slice types supported by the frequency point of the current serving cell. In the case of the same priority, perform at least one preset operation until the type priority level corresponding to the frequency point and the type priority level corresponding to the frequency point of the current serving cell are compared, or the priority level of the frequency point is confirmed. The level is equal to the priority level of the current service frequency point;
  • the preset operation includes comparing the type priorities corresponding to all the slice types supported by the frequency point and sorting the type priority level at the nth position in the type priority level corresponding to all the slice types supported by the current service frequency point. Sorted in the nth place between the high and low priority of the type; n is an integer greater than 2.
  • the processor is also used for:
  • the number of the target reselection cells is at least two, after the target reselection cell is determined according to the reference information, one target is selected from the at least two target reselection cells according to a first preset rule The reselection cell is used as the final target reselection cell;
  • the first preset rule includes at least one of the following rules:
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of cells included in the first type frequency point is 1, the The only cell included in the first type of frequency points is used as the final target reselection cell;
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of the first type frequency point is at least one, the at least one first type frequency point In the case where the total number of cells included in the frequency point of the type is at least two, according to the second preset rule, select one cell from the cells included in the at least one frequency point of the first type as the final target reselection cell;
  • a target reselection cell is selected as the final target reselection cell.
  • the second preset rule includes at least one of the following rules:
  • the target reselection cell is used as the final target reselection cell
  • the preset frequency points refer to the frequency points corresponding to the at least two target reselection cells respectively.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the processor is specifically used for:
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information; when the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the processor is specifically used for:
  • the target reselection cell is determined according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • Embodiments of the present disclosure further provide a network node, where the network node is a first network node, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor;
  • the processor implements the following steps when executing the program:
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the processor is specifically used for:
  • the transceiver uses the transceiver to broadcast the first preset information through a cell system message; or,
  • transceiver uses the transceiver to send the first preset information to the terminal through dedicated signaling;
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • Embodiments of the present disclosure further provide a network node, where the network node is a second network node, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor;
  • the processor implements the following steps when executing the program:
  • the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information of the terminal is sent to the first network node through the interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • the processor is also used for:
  • the second preset information includes: preset slice type identification information related to cell selection or reselection of the terminal;
  • the second network node is a mobility management function AMF, a unified data management platform UDM or a session management function SMF.
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • Embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, implements the foregoing cell reselection method on the terminal side, the first network node side, or the second network node side A step of.
  • the embodiment of the present disclosure also provides a cell reselection apparatus, which is applied to a terminal, including:
  • a first receiving module configured to receive the first preset information sent by the first network node
  • a first determining module configured to determine a target reselection cell according to the reference information
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the first determining module includes:
  • the first processing sub-module is configured to obtain, according to the reference information, a frequency point whose priority level is higher than that of the current service frequency point in the frequency point set as the first type of frequency point, and use the frequency point set in the frequency point set.
  • the remaining frequency points except the first type of frequency points are used as the second type of frequency points;
  • the second processing sub-module is configured to measure the first type of frequency points according to a preset period, and in the case that the signal quality parameter value of the cell corresponding to the first type of frequency points satisfies the reselection criterion, The cell corresponding to the first type of frequency point is used as the target reselection cell;
  • the third processing submodule is configured to, for the second type of frequency, start the measurement of the second type of frequency when the signal quality parameter value of the cell corresponding to the current serving frequency is lower than the first threshold, And in the case that the signal quality parameter value of the cell corresponding to the frequency point of the second type satisfies the reselection criterion, the cell corresponding to the frequency point of the second type is used as the target reselection cell.
  • the meeting the reselection criteria includes at least one of the following situations:
  • the signal quality parameter value of the cell corresponding to the first type of frequency point is greater than or equal to the second threshold, determine that the first type of frequency point satisfies the reselection criterion
  • the signal quality parameter value of the cell corresponding to the second type of frequency is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency is less than or equal to the fourth threshold, and the maintenance duration reaches the first duration , determine that the second type of frequency points meet the reselection criteria; or,
  • the first processing submodule includes:
  • a first determining unit configured to determine, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point;
  • a first obtaining unit configured to obtain the first type of frequency points according to the determination result.
  • the same frequency point as the current service frequency point exists in the frequency point set, and the priority level of the current service frequency point is consistent with the priority level of the same frequency point; or,
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or,
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the first determining unit includes:
  • a first determination subunit configured to determine that the priority of the frequency is low when the identification information of all the slice types supported by the frequency is included in the identification information of all the slice types supported by the current serving frequency equal to or equal to the priority level of the current service frequency point;
  • the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point the priority level; or,
  • the first intersection is the intersection between the identification information of all slice types supported by the frequency and the preset slice type identification information
  • the second intersection is all the slices supported by the current serving frequency The intersection between the identification information of the type and the preset slice type identification information.
  • the number of elements of the first intersection is 0; and/or,
  • the number of elements of the second intersection is 0; and /or
  • the number of elements of the first intersection and the second intersection is 0.
  • determining the level between the priority level of the frequency point and the priority level of the current service frequency point includes:
  • the frequency point priority information determine the level between the priority level of the frequency point and the priority level of the current service frequency point; Or, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point.
  • the first determining unit includes:
  • a third determining subunit configured to determine that the priority of the frequency is low when the identification information of all the slice types supported by the frequency is included in the identification information of all the slice types supported by the current serving frequency equal to or equal to the priority level of the current service frequency point; or,
  • a fourth determination subunit configured to determine that the priority of the frequency is higher than or equal to the priority level of the current service frequency point;
  • a first processing subunit configured to obtain the slice type according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set.
  • the second determination subunit is configured to determine, according to the type priority level, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point.
  • the frequency point set is obtained according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set.
  • Type priority of each slice type supported by each frequency point in the point set including:
  • the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determine whether the type priority of the first slice type corresponds to the second identification information
  • the type priorities are the same, and the type priority level of the first slice type is obtained according to the second identification information and the type priority information; or,
  • the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information The preset priority of the type priority of each slice type;
  • the first slice type is any slice type supported by the frequency point.
  • determining the priority level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point according to the type priority level including:
  • the type priority of at least one slice type is higher than the highest type priority corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority of the frequency point higher than the priority level of the current service frequency point; or,
  • the highest type priority corresponding to all the slice types supported by the frequency is the same as the highest type priority corresponding to all the slices supported by the frequency of the current serving cell
  • compare the times corresponding to all the slice types supported by the frequency The level between the high type priority level and the next highest type priority level corresponding to all slice types supported by the frequency of the current serving cell, and the level between the priority level of the frequency point and the priority level of the current service frequency point is determined according to the comparison result ;or,
  • the highest type priority level corresponding to all the slice types supported by the frequency point is the same as the highest type priority level corresponding to all the slice types supported by the frequency point of the current serving cell, determine the frequency point priority information according to the frequency point priority information.
  • the highest type priority corresponding to all slice types supported by the frequency is the same as the highest type priority corresponding to all slices supported by the frequency of the current serving cell, according to the number of all slice types supported by the frequency With the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point; or,
  • the priority of the frequency is lower than the frequency The priority of the current service frequency point.
  • determining the priority level of the frequency point and the priority level of the current service frequency point according to the comparison result includes:
  • the comparison result indicates that the priority of the next highest type corresponding to all the slice types supported by the frequency is lower than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, determine the priority of the frequency The level is lower than the priority level of the current service frequency point;
  • the priority of the frequency is equal to the priority level of the current serving frequency point; or, when the comparison result indicates that the priority level of the next highest type corresponding to all the slice types supported by the frequency point is the next highest type corresponding to all the slice types supported by the frequency of the current serving cell. In the case of the same priority, perform at least one preset operation until the type priority level corresponding to the frequency point and the type priority level corresponding to the frequency point of the current serving cell are compared, or the priority level of the frequency point is confirmed. The level is equal to the priority level of the current service frequency point;
  • the preset operation includes comparing the type priorities corresponding to all the slice types supported by the frequency point and sorting the type priority level at the nth position in the type priority level corresponding to all the slice types supported by the current service frequency point. Sorted in the nth place between the high and low priority of the type; n is an integer greater than 2.
  • the first selection module is configured to, when the number of the target reselection cells is at least two, after determining the target reselection cell according to the reference information, according to a first preset rule, select from the at least two targets Selecting a target reselection cell from the reselection cells as the final target reselection cell;
  • the first preset rule includes at least one of the following rules:
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of cells included in the first type frequency point is 1, the The only cell included in the first type of frequency points is used as the final target reselection cell;
  • the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of the first type frequency point is at least one, the at least one first type frequency point In the case where the total number of cells included in the frequency point of the type is at least two, according to the second preset rule, select one cell from the cells included in the at least one frequency point of the first type as the final target reselection cell;
  • a target reselection cell is selected as the final target reselection cell.
  • the second preset rule includes at least one of the following rules:
  • the target reselection cell is used as the final target reselection cell
  • the preset frequency points refer to the frequency points corresponding to the at least two target reselection cells respectively.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the first receiving module includes:
  • a first receiving submodule configured to receive the first preset information broadcast by the first network node through the cell system message;
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information; when the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the first determining module includes:
  • the first determination submodule is configured to determine the target reselection cell according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • the embodiment of the present disclosure also provides a cell reselection apparatus, which is applied to the first network node, including:
  • a first sending module configured to send the first preset information to the terminal
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the set of frequency points and the identification information of the slice type supported by each frequency point in the set of frequency points are generated by the first network node according to preset information
  • the preset information includes at least one of the following information:
  • the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node
  • the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node
  • Frequency point priority parameter information in the terminal context information stored by the first network node
  • Frequency point set information maintained locally by the first network node where the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and the 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points broadcasted by the system information of the first network node.
  • the first sending module includes:
  • a first sending submodule configured to broadcast the first preset information through a cell system message
  • the information carried by the dedicated signaling includes at least one of the following information:
  • the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the set of common frequency points configured for the terminal and the identification information of the slice type supported by each frequency point in the set of common frequency points;
  • the dedicated frequency point set configured for the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the common frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the common frequency point set.
  • An embodiment of the present disclosure further provides a cell reselection device, which is applied to a second network node, including:
  • the second sending module is configured to send the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information to the first network node through the interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface;
  • X2 interface represents the communication interface between 4G wireless access network nodes
  • Xn interface represents the communication interface between 5G wireless access network nodes
  • S1 interface represents the communication interface between 4G wireless access network nodes and 4G core network
  • NG interface represents the communication interface between the 5G radio access network node and 5G core network
  • F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology Communication interface
  • E1 interface represents the communication interface between the control plane gNB-CU-CP part in the gNB-CU and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and a unified data management platform UDM or Session Management Function SMF.
  • a first configuration module configured to configure second preset information to the non-access stratum of the terminal through a non-access stratum protocol
  • the second preset information includes: preset slice type identification information related to cell selection or reselection of the terminal;
  • the second network node is a mobility management function AMF, a unified data management platform UDM or a session management function SMF.
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the cell reselection method receives the first preset information sent by the first network node; determines the target reselection cell according to the reference information; wherein the reference information includes the first preset information and/or or second preset information; the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; the second preset information It is assumed that the information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal; the identification information of the slice type supported by the frequency point can be obtained in advance , to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slicing requirements, which ensures the continuity of the slicing service of the terminal, and avoids the frequency point priority information configured according to the network side.
  • the reference information includes the first preset information and/or or second preset information
  • the problem that the target cell cannot guarantee the continuity of the terminal slice service is determined by the signal strength of the cell; at the same time, the secondary cell reselection process caused by the interruption of the slice service of the terminal is reduced, the service delay is reduced, and the cell reselection in the related art is well solved.
  • the solution has the problems of poor service continuity and serious business delay.
  • FIG. 1 is a schematic flowchart 1 of a cell reselection method according to an embodiment of the present disclosure
  • FIG. 2 is a second schematic flowchart of a cell reselection method according to an embodiment of the present disclosure
  • FIG. 3 is a third schematic flowchart of a cell reselection method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram 1 of first preset information transmission according to an embodiment of the present disclosure.
  • FIG. 5 is a second schematic diagram of first preset information transmission according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram 1 of a network node structure according to an embodiment of the present disclosure.
  • FIG. 8 is a second schematic structural diagram of a network node according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram 1 of a cell reselection apparatus according to an embodiment of the present disclosure.
  • FIG. 10 is a second structural schematic diagram of a cell reselection apparatus according to an embodiment of the disclosure.
  • FIG. 11 is a third structural schematic diagram of a cell reselection apparatus according to an embodiment of the present disclosure.
  • Slice is a newly introduced concept of NR (New RAT, New Radio Access Technology) system.
  • the main purpose is to divide different resource management modes for different services, so as to increase service isolation and optimize according to service types. resource management,
  • a network slice is a service-oriented resource encapsulation concept.
  • a network slice is uniquely identified by NSSAI (Network Slice Selection Assistant Identity), and also corresponds to a type of resource configuration.
  • NSSAI Network Slice Selection Assistant Identity
  • Different core networks can support different types of network slices according to requirements. Different from LTE (Long Term Evolution) system registration, the terminal needs to register the slice before using the slice in the network. The terminal can only register the slice after the successful registration. Only then can the session establishment process corresponding to the slice be initiated.
  • the NSSAI information (Request NSSAI) requested by the terminal to register is carried to the access network side through message 5, and the terminal is restricted to register at most 8 S-NSSAI (Single NSSAI, single network slice selection auxiliary identifier) information at a time. ;
  • the core network generates the Allowed NSSAI and the Rejected (rejected) NSSAI of the terminal according to the terminal subscription information, the Request NSSAI of the terminal, the locally supported slice information and the local
  • the terminal will also pre-configure or obtain the Configured NSSAI from the core network. This configuration is unique to the PLMN. If a PLMN configured by the terminal is not configured with the Configured NSSAI, the Default NSSAI information will be used.
  • a slice corresponds to an S-NSSAI identifier
  • an S-NSSAI identifier consists of a slice type identifier SST (Slice Slice/Service Type) and a slice distinction identifier SD (Slice Differentiator, slice difference discriminator),
  • SST Slice Slice/Service Type
  • SD slice distinction identifier
  • the slice type identifier SST occupies 8 bits and must appear
  • the slice distinction identifier SD occupies 24 bits and is optional.
  • the inactive state is introduced into the NR system, its mobility management method is not much different from the idle state. Since the mobility management of the idle state and the inactive state is controlled by the terminal itself, the access network side can only change the frequency
  • the priority and other information indirectly control the mobility of the terminal, and the frequency priority contains two levels of meaning. The first is called the terminal-specific frequency priority, which is the terminal from the connection release message from the access network side.
  • the acquired configuration information is valid for a certain period of time; the second type is called public frequency priority, each cell will broadcast the public frequency priority information in its own system message, the purpose is that when the terminal does not have a dedicated frequency When the priority or the priority of the dedicated frequency point fails, the terminal can use the public frequency point broadcasted by the cell to continue the cell reselection.
  • the point priority information is an advantageous tool to indirectly control the mobility of the terminal, and it is also one of the important features to ensure the efficient and reasonable operation of the network.
  • the NR system considers the impact of slicing for the dedicated frequency priority.
  • the core network is generating the frequency priority parameter RFSP (Radio Access Technology RAT and/or Frequency Selection for a single terminal)
  • the slice information that is, the Allowed NSSAI List (list)
  • the frequency priority parameter RFSP generated after considering the slice information will be used together with the terminal's Allowed NSSAI List as the terminal context. A part of it is passed by the core network side to the access network side.
  • the access network side When the access network side is ready to release the terminal, it will consider how to pass the known terminal slice information and saved terminal parameters RFSP according to the load of the access network side.
  • the cell determines the priority size corresponding to each frequency point in the broadcasted public frequency point priority information according to the load of each frequency point in the region and the deployment plan. At present, the impact of the slice-related process on the priority of the common frequency point is not considered.
  • the present disclosure aims at the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art, and provides a cell reselection method, which is applied to a terminal, as shown in FIG. 1 , including:
  • Step 11 Receive the first preset information sent by the first network node
  • Step 12 Determine the target reselection cell according to the reference information
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the identification information may be S-NSSAI identification information, but is not limited thereto.
  • the number of preset slice identification information may be one or at least two.
  • the preset slice identification information may be information in Allowed NSSAI information, Default NSSAI information, or Configured NSSAI information (set).
  • the cell reselection method receives first preset information sent by a first network node; determines a target reselection cell according to reference information; wherein the reference information includes the first preset information and/or second preset information; the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; the first preset information
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal; Identification information, to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slicing requirements, which ensures the continuity of the terminal slicing service and avoids the frequency point priority configured by the network side.
  • the problem that the target cell cannot guarantee the continuity of the terminal slice service is determined by the information and the signal strength of the cell; at the same time, the secondary cell reselection process caused by the interruption of the slice service of the terminal is reduced, and the service delay is reduced, which is a good solution to the cell in the related art.
  • the reselection scheme has the problems of poor service continuity and serious business delay.
  • the determining the target reselection cell according to the reference information includes: obtaining, according to the reference information, a frequency point whose priority level is higher than that of the current serving frequency point in the frequency point set as the first type of frequency point, and use the remaining frequency points in the set of frequency points except the first type of frequency points as the second type of frequency points; for the first type of frequency points, the measurement is performed according to a preset period, and the first type of frequency points are measured When the signal quality parameter value of the cell corresponding to the type frequency point satisfies the reselection criterion, the cell corresponding to the first type frequency point is used as the target reselection cell; for the second type frequency point, the current serving frequency point corresponds to When the signal quality parameter value of the cell is lower than the first threshold, start the measurement of the second type of frequency point, and in the case that the signal quality parameter value of the cell corresponding to the second type of frequency point satisfies the reselection criteria , and use the cell corresponding to the
  • the second type of frequency point for the second type of frequency point of the same level as the current serving node, it may be that when the signal quality parameter value of the cell corresponding to the current serving frequency point is lower than the first threshold, start the second type of frequency point Type frequency measurement;
  • the signal quality parameter value of the cell corresponding to the current service frequency point is lower than the first threshold value, and the signal quality parameter value of the neighboring cell is higher than the seventh threshold value. , start the measurement of the second type of frequency points.
  • the signal quality parameter value refers to at least one of an RSRP (Reference Signal Received Power) value, an RSRQ (Reference Signal Received Quality) value, and an SINR (Signal to Interference and Noise Ratio) value.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • SINR Signal to Interference and Noise Ratio
  • the satisfying the reselection criterion includes at least one of the following situations: when the signal quality parameter value of the cell corresponding to the first type of frequency is greater than or equal to a second threshold, it is determined that the first type of frequency satisfies Reselection criteria; the signal quality parameter value of the cell corresponding to the frequency of the second type is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency is less than or equal to the fourth threshold and the maintenance duration reaches the first threshold In the case of the time length, it is determined that the second type of frequency point satisfies the reselection criterion; or, between the signal quality parameter value of the cell corresponding to the second type of frequency point and the signal quality parameter value of the cell corresponding to the current serving frequency point. When the difference reaches the fifth threshold and the maintenance duration reaches the second duration, it is determined that the frequency bin of the second type satisfies the reselection criterion.
  • the acquiring, according to the reference information, a frequency point whose priority level is higher than the priority level of the current service frequency point in the frequency point set as the first type of frequency point includes: determining the frequency point according to the reference information. The level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point; according to the determination result, the first type of frequency point is acquired.
  • the same frequency point as the current service frequency point exists in the frequency point set, and the priority level of the current service frequency point is consistent with the priority level of the same frequency point; or, the There is no frequency in the frequency point set that is the same as the current service frequency point, and the priority level of the current service frequency point is lower than the priority level of any frequency point in the frequency point set.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or, the second preset information further includes: Including: type priority information corresponding to the preset slice type identification information.
  • the determining, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point including: all slice types supported by the frequency point
  • the identification information of the frequency point is included in the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is lower than or equal to the priority level of the current service frequency point; or, in the If the identification information of all slice types supported by the frequency point includes the identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the priority level of the current service frequency point
  • the first intersection set is the identification information of all slice types supported by the frequency
  • the number of elements in the first intersection is 0; and/or, after the current service frequency is obtained
  • the number of supported slice types is 0, or if the slice type supported by the current service frequency point is not obtained, the number of elements of the second intersection is 0; and/or, in (the terminal's access layer) in the case where the second preset information is not acquired or the acquired second preset information is empty, the number of elements of the first intersection and the second intersection is 0.
  • the determining the priority level between the priority level of the frequency point and the priority level of the current service frequency point according to the first intersection set and the second intersection set includes: an element in the first intersection set When the number of elements is greater than the number of elements in the second intersection, determine that the priority level of the frequency point is higher than the priority level of the current service frequency point; In the case of the number of elements of two intersection sets, it is determined that the priority level of the frequency point is lower than the priority level of the current service frequency point; the number of elements in the first intersection set is equal to the number of elements in the second intersection set , and if the number of elements is not 0, determine that the priority of the frequency is equal to the priority of the current serving frequency; if the number of elements in the first intersection and the second intersection is 0 In this case, according to the frequency point priority information, determine the level between the priority level of the frequency point and the priority level of the current service frequency point; or, according to the number of all slice types supported by the frequency point and the current The number of all slice types supported
  • the determining, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point includes: supporting the frequency point in the frequency point. If the identification information of all slice types is included in the identification information of all slice types supported by the current service frequency point, it is determined that the priority level of the frequency point is lower than or equal to the priority level of the current service frequency point; or, In the case that the identification information of all slice types supported by the frequency point includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the current service frequency point or, according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set, obtain the frequency point set. Type priority level of each slice type supported by each frequency point in the point set; according to the type priority level, determine the level between the priority level corresponding to each frequency point in the frequency point set and the priority level
  • the frequency point is obtained according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set
  • the type priority level of each slice type supported by each frequency point in the set includes: in the case that the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determining the The type priority of the first slice type is the same as the type priority corresponding to the second identification information, and the type priority of the first slice type is obtained according to the second identification information and the type priority information; or , in the case that the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information
  • the preset priority of the type priority of each slice type wherein, the first slice type is any slice type supported by the frequency point.
  • determining the priority level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point according to the type priority level includes: all slice types supported by the frequency point In the case where the type priority of at least one slice type is higher than the highest type priority corresponding to all slice types supported by the frequency of the current serving cell, it is determined that the priority of the frequency is higher than the priority of the current serving frequency. or, the highest type priority level corresponding to all slice types supported at the frequency point is the same as the highest type priority level corresponding to all slice types supported by the current serving cell frequency point (including the elements of the first intersection and the second intersection above).
  • the determining, according to the comparison result, the priority level between the priority level of the frequency point and the priority level of the current service frequency point includes: the comparison result indicates that the next highest type corresponding to all the slice types supported by the frequency point has priority In the case where the level is higher than the second highest type priority corresponding to all the slice types supported by the frequency of the current serving cell, it is determined that the priority level of the frequency point is higher than the priority level of the current serving frequency point; In the case where the priority of the next highest type corresponding to all the slice types supported by the frequency is lower than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, determine that the priority of the frequency is lower than the current priority The priority level of the serving frequency point; when the comparison result indicates that the second highest type priority level corresponding to all the slice types supported by the frequency point is the same as the next highest type priority level corresponding to all the slice types supported by the current serving cell frequency point, Determine that the priority level of the frequency point is equal to the priority level of the current serving frequency
  • the method further includes: according to a first preset rule, selecting from the at least two Among the target reselection cells, one target reselection cell is selected as the final target reselection cell; wherein, the first preset rule includes at least one of the following rules: at the frequency points corresponding to the at least two target reselection cells In the case where the first type of frequency point and the second type of frequency point exist, and the number of cells contained in the first type of frequency point is 1, the only cell contained in the first type of frequency point is used as the final target selecting a cell; there are the first type frequency point and the second type frequency point in the frequency points corresponding to the at least two target reselection cells, and the number of the first type frequency point is at least one, the at least one frequency point In the case where the total number of cells included in a first-type frequency point
  • one frequency point may include (or correspond to) at least two cells.
  • the second preset rule includes at least one of the following rules: acquiring the identification information of all slice types supported by each frequency point in the preset frequency points and the intersection elements between the preset slice type identification information
  • the target reselection cell corresponding to the frequency point corresponding to the number of the intersection elements with the largest value is taken as the final target reselection cell; obtain the total number of all slice types supported by each frequency point in the preset frequency points
  • the most frequency points, the target reselection cell corresponding to the acquired frequency points is used as the final target reselection cell; the frequency point with the highest priority in the frequency point priority information among the preset frequency points is obtained, and the The target reselection cell corresponding to the frequency point of 1 is taken as the final target reselection cell;
  • the implementation of the second preset rule can be embodied in the following four stages; the cell signal quality parameter value refers to at least one of the RSRP value, RSRQ value and SINR value; the cell beam signal quality parameter value refers to is at least one of the RSRP value, the RSRQ value, and the SINR value.
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice in the terminal context information stored by the first network node Select the auxiliary identifier Default NSSAI information; the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; the frequency point priority parameter information in the terminal context information stored by the first network node ; the frequency point set information maintained locally by the first network node, the frequency point set information includes the same-frequency frequency point set information and the inter-frequency frequency point set information; each frequency point in the frequency point set maintained locally by the first network node Identification information of the supported slice types.
  • the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information
  • the frequency point priority parameter information may specifically be RFSP (Radio Access Technology RAT and/or frequency point selection priority frequency selection priority) information, but is not limited thereto.
  • RFSP Radio Access Technology RAT and/or frequency point selection priority frequency selection priority
  • the frequency points in the frequency point set are dedicated frequency points configured by the first network node to the terminal, or public frequency points for broadcasting system information of the first network node.
  • the receiving the first preset information sent by the first network node includes: (through the access layer of the terminal) receiving the first preset information broadcast by the first network node through the cell system message; or , (using the access layer of the terminal) to receive the first preset information sent by the first network node through dedicated signaling; wherein, the information carried by the dedicated signaling includes at least one of the following information: configured to The dedicated frequency point set of the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set; the public frequency point set configured for the terminal and the support of each frequency point in the public frequency point set The identification information of the slice type; the dedicated frequency point set allocated to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set; the public frequency point allocated to the terminal The valid timer duration configuration information of the identification information of the slice type supported by each frequency point in the point set and each frequency point in the public frequency point set; the dedicated frequency point set configured for the terminal and the location of each frequency point in
  • the second preset information further includes: the validity auxiliary information corresponding to the preset slice type identification information; in the case that the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state; wherein, the validity auxiliary information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the determining the target reselection cell according to the reference information includes: determining according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the target reselection cell includes: determining according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • An embodiment of the present disclosure further provides a cell reselection method, which is applied to the first network node, as shown in FIG. 2 , including:
  • Step 21 Send the first preset information to the terminal
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the identification information may be S-NSSAI identification information, but is not limited thereto.
  • the cell reselection method sends first preset information to a terminal, wherein the first preset information includes: a frequency point set and the frequency point set generated by the first network node
  • the identification information of the slice types supported by each frequency point in the middle so that the terminal can obtain the identification information of the slice type supported by the frequency point in advance, so as to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can choose according to different slice requirements.
  • the target cell suitable for this service ensures the continuity of the terminal slicing service, and avoids the problem that the target cell cannot be determined according to the frequency priority information and cell signal strength configured on the network side to ensure the continuity of the terminal slicing service; at the same time, it reduces the number of terminals Due to the secondary cell reselection process caused by the interruption of the slice service, the service delay is reduced, and the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art are well solved.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes the following information: At least one of: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice selection auxiliary identifier in the terminal context information stored by the first network node Default NSSAI information; configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; frequency point priority parameter information in the terminal context information stored by the first network node; the The frequency point set information maintained locally by the first network node, the frequency point set information includes the same-frequency frequency point set information and the inter-frequency frequency point set information; the frequency point set locally maintained by the first network node Supported by each frequency point Identification information for the slice type.
  • the preset information includes the following information: At least one of: the allowed network slice selection auxiliary identifier Allowed NSSAI information in
  • the frequency point priority parameter information may specifically be RFSP (Radio Access Technology RAT and/or frequency point selection priority frequency selection priority) information, but is not limited thereto.
  • RFSP Radio Access Technology RAT and/or frequency point selection priority frequency selection priority
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents the communication interface between 4G wireless access network nodes; Xn interface represents 5G interface The communication interface between the radio access network nodes; the S1 interface represents the communication interface between the 4G radio access network node and the 4G core network; the NG interface represents the communication interface between the 5G radio access network node and the 5G core network; F1 The interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU-CP part in the gNB-CU and the Communication interface between user plane gNB-CU-UP parts among gNB-CUs.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points of system information broadcast by the first network node.
  • the sending the first preset information to the terminal includes: broadcasting the first preset information through a cell system message; or sending the first preset information to the terminal through dedicated signaling; wherein the The information carried by the dedicated signaling includes at least one of the following information: the dedicated frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set; the dedicated frequency point set configured for the terminal Identification information of the common frequency point set and the slice types supported by each frequency point in the common frequency point set; the dedicated frequency point set allocated to the terminal and the identification information of the slice type supported by each frequency point in the dedicated frequency point set The configuration information of the effective timer duration of the information; the configuration information of the effective timer duration of the identification information of the common frequency point set and the slice type supported by each frequency point in the common frequency point set configured to the terminal; configured to the terminal The dedicated frequency point set and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency point set; the public frequency point set configured for the terminal
  • An embodiment of the present disclosure further provides a cell reselection method, which is applied to a second network node, as shown in FIG. 3 , including:
  • Step 31 Send the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information to the first network node through the interface protocol.
  • the cell reselection method sends the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information to the first network node through an interface protocol;
  • the terminal sends first preset information; wherein, the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; thus supporting
  • the terminal can obtain the identification information of the slice type supported by the frequency point in advance to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slice requirements, ensuring the continuity of the terminal slice service.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents the communication interface between 4G wireless access network nodes; Xn interface represents 5G wireless The communication interface between the access network nodes; the S1 interface represents the communication interface between the 4G wireless access network node and the 4G core network; the NG interface represents the communication interface between the 5G wireless access network node and the 5G core network; the F1 interface Represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU-CP part of the gNB-CU and the gNB - Communication interface between user plane gNB-CU-UP parts among CUs.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the cell reselection method further includes: configuring second preset information to the non-access stratum of the terminal through a non-access stratum protocol; wherein the second preset information includes: the terminal The preset slice type identification information related to cell selection or reselection; the second network node is the mobility management function AMF, the unified data management platform UDM or the session management function SMF.
  • the number of preset slice identification information may be one or at least two.
  • the preset slice identification information may be information in Allowed NSSAI information, Default NSSAI information, or Configured NSSAI information (set).
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information;
  • the validity assistance information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the cell reselection method provided by the embodiments of the present disclosure will be described below with reference to multiple sides such as a terminal, a first network node, and a second network node.
  • the embodiments of the present disclosure provide a method for cell reselection, so as to assist the terminal to maintain service continuity and achieve service delay optimization by allowing the terminal to obtain the identification information of the slice type supported by the frequency point in advance; Can involve:
  • AS layer Terminal-side access layer
  • the terminal access layer obtains the first preset information sent by the first network node through the cell system message or dedicated signaling; and selects an appropriate target reselection cell by using the first preset information and/or the second preset information.
  • the first preset information includes at least one of the following information:
  • the first preset information may further include frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the second preset information may be the second preset information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal;
  • the above-mentioned second preset information includes at least one of the following information:
  • Identification information of one or more preset slice types that is, the above-mentioned preset slice type identification information
  • the identification information of one or more preset slice types and the PLMN information or tracking area (TA) information or frequency band (Band) information corresponding to the identification information of the preset slice type (that is, including the above-mentioned validity auxiliary information); or
  • Identification information of one or more preset slice types Identification information of one or more preset slice types, type priority information corresponding to the identification information of each preset slice type, and PLMN information or tracking area (TA) information or frequency band (Band) corresponding to the identification information of the preset slice types. )information.
  • the preset information described in 1) includes at least one of the following information:
  • Frequency point set information maintained locally by the first network node including intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the first network node Before obtaining the first preset information described in 1), it also includes that the first network node obtains the Default NSSAI or Configured NSSAI information of the terminal from the second network node through the interface protocol;
  • the interface described in 3) may be any one of the X2, Xn, S1, NG, F1 and E1 interfaces, and the second network node may be a DU, a second access network with the same function as the first network node Any of Entity, CU-CP, AMF, CU-UP, UDM and SMF;
  • the frequency point set described in 1) can be either a dedicated frequency point set configured by the first network node to the terminal, or a public frequency point set (that is, the frequency point set) currently broadcast by the first network node system information.
  • the frequency point in is the dedicated frequency point configured by the first network node to the terminal, or the public frequency point of the system information broadcast of the first network node);
  • the information carried by the dedicated signaling described in 1) includes at least one of the following information:
  • the dedicated frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the valid area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the priority of each frequency point obtained from the cell system information or dedicated signaling and the priority level of the current serving frequency point is determined by the following rules:
  • Scenario 1 If the second preset information includes type priority information corresponding to the preset slice type identification information, the rules for determining the level between the frequency point priority of each frequency point and the priority level of the current service frequency point can be as follows :
  • the slice type uses the same priority as the same slice type in the second preset information, and ignores that the network side associates the slice type with the cell system information or dedicated signaling.
  • the frequency point priority information of the frequency point configuration if the identification information of the slice type supported by a certain frequency point generated by the first network node according to the preset information obtained by the terminal cannot be obtained from the terminal non-access stratum cell selection or reselection If the corresponding type information is found in the relevant second preset information, the priority of the frequency point is set to be the lowest (lower than the priority levels of the slice types corresponding to all type information in the second preset information).
  • the priority of the slice type supported by a frequency point (belonging to the above frequency point set) is higher than the priority corresponding to the highest priority slice of the current serving cell frequency (that is, higher than the highest type priority corresponding to all slice types supported by the current serving cell frequency), then the priority of the frequency higher priority than the current cell frequency; or,
  • the priority corresponding to the highest-priority slice in the slice information supported by a frequency point (that is, the highest type priority corresponding to all slice types supported by the frequency point) is the same as the priority corresponding to the highest-priority slice of the current serving cell frequency ( That is, the highest type priority corresponding to all slices supported by the frequency of the current serving cell is the same, then compare the priorities corresponding to the two next highest priority slices (that is, compare the next highest type corresponding to all slice types supported by the frequency point)
  • the priority level is the level between the priority of the next highest type corresponding to all the slice types supported by the current serving cell frequency).
  • the priority of the next highest type corresponding to all the slice types supported by the frequency is higher than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, it is determined that the priority of the frequency is higher than the priority of the frequency.
  • the priority level of the current serving frequency point when the second highest type priority level corresponding to all the slice types supported by the frequency point is lower than the second highest type priority level corresponding to all the slice types supported by the current serving cell frequency point, determine the The priority level of the frequency point is lower than the priority level of the current service frequency point), if the priorities corresponding to the two second highest priority slices are still the same, it can be considered that the two frequency points have the same priority or continue to compare the third highest priority.
  • the priority corresponding to the priority slice when the second highest type priority level corresponding to all the slice types supported by the frequency point is lower than the second highest type priority level corresponding to all the slice types supported by the current serving cell frequency point, determine the The priority level of the frequency point is lower than the priority level of the current service frequency
  • the priority corresponding to the third highest priority slice is higher, and whose frequency point priority is higher. If the priority corresponding to the third highest priority slice is still the same, you can continue to compare the first priority. The priority corresponding to the four high-priority slices, and so on, until the priority of the two frequencies is compared or the priority of the two frequencies is declared to be the same; or,
  • the priority of the frequency point is lower than or equal to the priority of the current service frequency point;
  • the slice information supported by a frequency point includes all the slice information supported by the current service frequency point (the slice information supported by the current service frequency point is a subset of the slice information supported by the frequency point, the identifier of all the slice types supported by the frequency point information contains the identification information of all slice types supported by the current service frequency point), then the priority of the frequency point is higher than or equal to the priority of the current service frequency point; or,
  • the priority corresponding to the highest priority slice in the slice information supported by a frequency point is lower than the priority corresponding to the lowest priority slice of the current serving cell frequency point (that is, the highest type priority level corresponding to all the slice types supported by the frequency point is lower (the lowest type priority corresponding to all slice types supported by the frequency of the current serving cell), the priority of the frequency is lower than the priority of the current serving frequency.
  • the priority between these lowest priority frequency points can be determined by the following rules:
  • the priority among all lowest-priority frequency points is determined according to the number of slice types supported on these lowest-priority frequency points. The more slice types supported on a lowest-priority frequency point, the higher the priority of the frequency point. high;
  • the rules for determining the level between the frequency point priority of each frequency point and the priority level of the current service frequency point may be: as follows:
  • the priority of the frequency point is lower than or equal to the priority of the current service frequency point;
  • the slice information supported by a frequency point includes all the slice information supported by the current service frequency point (the slice information supported by the current service frequency point is a subset of the slice information supported by the frequency point, the identifier of all the slice types supported by the frequency point information contains the identification information of all slice types supported by the current service frequency point), then the priority of the frequency point is higher than or equal to the priority of the current service frequency point; or,
  • the set obtained by taking the intersection of the identification information of all slice types supported by the frequency points in the above-mentioned frequency point set and the preset slice type identification information provided in the second preset information is called the first intersection; the current serving cell is associated with the frequency point.
  • the set obtained by taking the intersection of the identification information of all slice types supported by the point (that is, the current service frequency point) and the preset slice type identification information provided in the second preset information is called the second intersection; if the above-mentioned first intersection contains If the number of slice types is greater than the number of slice types included in the first slice type set, the priority of the frequency point is higher than the frequency point of the serving cell;
  • the priority of the frequency point is equal to the priority of the current service frequency point
  • the priority of the frequency point is lower than the priority of the current service frequency point
  • the frequency point priority information determine the level between the priority level of the frequency point and the priority level of the current service frequency point; Or, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point.
  • the target reselection cell selection and execution process can be completed through the following rules:
  • the terminal can always measure, once the terminal measures that the signal quality parameter value of the cell corresponding to the high-priority frequency is greater than or equal to the second threshold Then the terminal reselects to the cell corresponding to the frequency point;
  • the terminal can enable the signal quality parameter value of the cell corresponding to the current serving frequency is lower than the first threshold. measurement, after the measurement result satisfies the reselection criterion, the terminal reselects to the cell corresponding to the measured frequency point;
  • the terminal can use the signal quality parameter value of the cell corresponding to the current serving frequency when the value of the signal quality parameter is lower than the first threshold.
  • the terminal reselects the measured frequency Click on the corresponding cell.
  • the terminal may determine the final target reselection cell according to the following rules:
  • the first stage rule if at least one of the identification information of all slice types supported by the frequencies associated with the first cell is included in the second preset information, then the first cell is superior to all those supported by the associated frequencies. If the identification information of the slice type is not included in the second cell in the second preset information, the terminal will preferentially select the first cell for re-selection, specifically for example: taking the only first cell as the final target re-selection cell;
  • Second-stage rules If there are still multiple candidate target reselection cells after the first-stage rules are screened (that is, the number of first cells is at least two), the The number of slice types determines the final target reselection cell. The more the number of slice types supported by the frequency associated with the cell, the better the performance. The terminal will preferentially select the candidate with more slice types supported by the associated frequency.
  • the target reselection cell is used as the final target reselection cell; for example, the only candidate target reselection cell with the largest number of slice types supported by the associated frequency point is preferentially selected as the final target reselection cell;
  • the third stage rule If there are still multiple candidate target reselection cells after the first and second stage rules are screened, the terminal can select the measurable beam of the cell (that is, the signal quality of the beam in the beam corresponding to the cell is greater than or equal to the sixth
  • the candidate target reselection cell with a large number of threshold beams is used as the final target reselection cell;
  • the fourth stage rule If there are still multiple candidate target reselection cells after the first, second and third stage rules are screened, the terminal can select the candidate target with the best cell signal quality (that is, the highest cell signal quality parameter value). The reselection cell is used as the final target reselection cell.
  • NAS layer Terminal side non-access stratum
  • Identification information of one or more preset slice types that is, the above-mentioned preset slice type identification information
  • the identification information of one or more preset slice types and the PLMN information or tracking area (TA) information or frequency band (Band) information corresponding to the identification information of the preset slice type (that is, including the above-mentioned validity auxiliary information); or
  • Identification information of one or more preset slice types Identification information of one or more preset slice types, type priority information corresponding to the identification information of each preset slice type, and PLMN information or tracking area (TA) information or frequency band (Band) corresponding to the identification information of the preset slice types. )information.
  • the second preset information described in 1) may be preconfigured by the system to the terminal non-access stratum, or may be obtained by the terminal non-access stratum from the second network node side through a non-access stratum message;
  • the first network node behavior is the first network node behavior:
  • the first network node sends the first preset information to the terminal
  • the first preset information includes at least one of the following information:
  • the frequency point set provided by the first network node broadcast and the identification information of the slice type supported by each frequency point in the frequency point set are obtained by the terminal access layer through the cell system message.
  • the first preset information may further include frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • Frequency point set information maintained locally by the first network node including intra-frequency frequency point set information and inter-frequency frequency point set information;
  • the first network node obtains the Default NSSAI or Configured NSSAI information of the terminal from the second network node through an interface protocol;
  • the interface described in 3) may be any one of the X2, Xn, S1, NG, F1 and E1 interfaces, and the second network node may be a DU, a second access network with the same function as the first network node Any of Entity, CU-CP, AMF, CU-UP, UDM and SMF;
  • the frequency point set described in 1) can be either a dedicated frequency point set configured by the first network node to the terminal, or a public frequency point set (that is, the frequency point set) currently broadcast by the first network node system information.
  • the frequency point in is the dedicated frequency point configured by the first network node to the terminal, or the public frequency point of the system information broadcast of the first network node);
  • the information carried by the dedicated signaling described in 1) includes at least one of the following information:
  • the dedicated frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the valid timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the valid area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the common frequency point set configured to the terminal and the valid area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set.
  • the second network node sends the Default NSSAI or Configured NSSAI information of the terminal to the first network node through the interface protocol;
  • the interface described in 1) may be any one of X2, Xn, S1, NG, F1 and E1 interfaces, and the second network node may be a DU, a second access network with the same function as the first network node Any of Entity, CU-CP, AMF, CU-UP, UDM and SMF;
  • the second network node can be any one of AMF, UDM and SMF at this time;
  • the above-mentioned second preset information includes at least one of the following information:
  • Identification information of one or more preset slice types that is, the above-mentioned preset slice type identification information
  • the identification information of one or more preset slice types and the PLMN information or tracking area (TA) information or frequency band (Band) information corresponding to the identification information of the preset slice type (that is, including the above-mentioned validity auxiliary information); or
  • Identification information of one or more preset slice types Identification information of one or more preset slice types, type priority information corresponding to the identification information of each preset slice type, and PLMN information or tracking area (TA) information or frequency band (Band) corresponding to the identification information of the preset slice types. )information.
  • Example 1 An example of the manner in which the first network node generates a frequency point set and identification information of the slice types supported by each frequency point in the frequency point set
  • Method 1 This cell uses the public frequency set obtained from the neighbor cell and/or the core network side and the identification information of the slice type supported by each frequency in the frequency set to generate the public frequency set of the cell and the frequency set The identification information of the slice type supported by each frequency point in the set; that is, the frequency point set information maintained locally by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set;
  • Method 2 Through at least one parameter in the terminal Default NSSAI or Configured NSSAI or Allowed NSSAI or the frequency point priority parameter RFSP, the frequency point set of the cell obtained by the auxiliary method 1 and the slice type supported by each frequency point in the frequency point set The identification information of the frequency point set dedicated to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set are generated.
  • Table 1 The frequency point set information generated by method 1 and the format of the identification information of the slice type supported by each frequency point in the frequency point set
  • the frequency point set of the cell obtained by the auxiliary method 1 and the identification information of the slice type supported by each frequency point in the frequency point set to generate a terminal-specific frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set:
  • Table 3 The terminal-specific frequency point set generated by method 2 and the format of the identification information of the slice type supported by each frequency point in the frequency point set
  • Table 3 additionally considers at least one parameter in the terminal Default NSSAI or Configured NSSAI or Allowed NSSAI or the frequency point priority parameter RFSP, the frequency point set generated by the auxiliary update method 1 and each frequency point set in the frequency point set. Identifying information about the slice types supported by the point.
  • Example 2 How the terminal obtains the frequency point set provided by the network side and the identification information of the slice type supported by each frequency point in the frequency point set
  • Mode 1 The first network node informs the terminal of the public frequency point set obtained in Example 1 through Mode 1 and the identification information of the slice types supported by each frequency point in the frequency point set by broadcasting the system message of the cell, as shown in FIG. 4 . ,include:
  • Step 41 The first network node sends the common frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set to the terminal through the cell system message.
  • the cell system information in FIG. 4 only provides the common frequency point set maintained by the cell and the identification information of the slice type supported by each frequency point in the frequency point set.
  • Mode 2 The first network node sends the dedicated frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set to the terminal through dedicated signaling, as shown in FIG. 5 , including:
  • Step 51 The first network node sends the dedicated frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set to the terminal through dedicated signaling;
  • the information carried by the dedicated signaling in this step includes at least one of the following information:
  • the dedicated frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the public frequency point set configured to the terminal and the effective timer duration configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the dedicated frequency point set configured to the terminal and the valid area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set;
  • the common frequency point set configured to the terminal and the valid area configuration information of the identification information of the slice type supported by each frequency point in the frequency point set.
  • Step 52 The terminal replies to the first network node (that is, the terminal replies to the first network node) configuration success information, and this process may not occur.
  • Table 4 Schematic representation of the format of the second preset information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal (the preset slice type identification information is embodied as a preset slice type identification)
  • the second preset information is optional, that is to say, the non-access stratum of the terminal may not provide the information to the access stratum; in addition, the preset slice type identification priority information in the second preset information (that is, the above-mentioned preset information)
  • the type priority information corresponding to the slice type identification information is also optional, that is to say, the non-access layer of the terminal can provide only the preset slice type identification information to the terminal access layer without providing the priority corresponding to the preset slice type identification. level information.
  • M, N, O, P, Q, W, X, Y and/or Z in Table 1, Table 2, Table 3 and/or Table 4 are respectively a positive integer greater than or equal to 1.
  • Example 4 Example of a rule for determining the priority between each frequency point in the frequency point set sent by the network and the current service frequency point when the second preset information only includes the preset slice type identifier (that is, the above-mentioned preset slice type identifier information)
  • the first intersection is the intersection between the identification information of all slice types supported by the frequency and the preset slice type identification information
  • the second intersection is all the slice types supported by the current serving frequency
  • the preset slice type identification information included in the second preset information is: slice type 1 and slice type 2;
  • the frequency point set obtained by the terminal from the network side includes three frequency points: f1, f2 and f3.
  • Scenario 1 The current service frequency is f1, and the f1, f2 and f3 slice types are supported as follows:
  • the number of elements in the second intersection corresponding to f1 is 1, the number of elements in the first intersection corresponding to f2 is 2, and the number of elements in the first intersection corresponding to f3 is 0.
  • the frequency point priority formulating rules are as follows:
  • the number of second intersection elements corresponding to f1 is 0, the number of first intersection elements corresponding to f2 is 0, and the number of first intersection elements corresponding to f3 is 0, then the priority of each frequency point is determined according to the following regulations:
  • Provision 1 According to the frequency point priority information, determine the level between the priority level of the frequency point and the priority level of the current service frequency point;
  • the priority information of the frequency points in Regulation 1 is provided by the network side through the cell system information or dedicated signaling. )Sure;
  • Provision 2 According to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point .
  • the priority of frequency points between f1, f2 and f3 is: f2>f1>f3; if f3 does not provide a slice type, it is regarded as supporting 0 slice types.
  • Scenario 3 The service frequency point is not included in the frequency point set provided by the network side, then the service frequency point has the lowest priority (lower than the frequency point priority of any frequency point in the frequency point set).
  • the second preset information includes both a preset slice type identifier (that is, the above-mentioned preset slice type identifier information) and priority information corresponding to the preset slice type identifier (that is, the type priority information corresponding to the above-mentioned preset slice type identifier information) ), an example of the rules for determining the priority between each frequency point in the frequency point set and the current service frequency point
  • type priority 0 has the highest priority
  • type priority 1 is the second, and so on;
  • the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determine whether the type priority of the first slice type corresponds to the second identification information
  • the type priorities are the same, and the type priority level of the first slice type is obtained according to the second identification information and the type priority information; or,
  • the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information The preset priority of the type priority of each slice type;
  • the first slice type is any slice type supported by the frequency point.
  • the set of frequency points obtained by the terminal from the network side includes 3 frequency points: f1, f2 and f3.
  • Scenario 1 The current service frequency is f1, and the f1, f2 and f3 slice types are supported as follows:
  • the f1 slice type priorities are: 0 and 2;
  • f2 slice type priorities are: 0 and 1;
  • the f3 slice type priorities are: 0 and lower than priority 2;
  • the priority of frequency points between f1, f2 and f3 can be judged as: f2>f1>f3;
  • Provision 1 According to the frequency point priority information, determine the level between the priority level of the frequency point and the priority level of the current service frequency point;
  • the priority information of frequency points in Provision 1 is provided by the network side through cell system information or dedicated signaling, and the priority of frequency points between f1, f2, and f3 is determined according to system information or dedicated signaling;
  • Provision 2 According to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point .
  • the priority of frequency points among f1, f2 and f3 is the same.
  • the f1 slice type priorities are: all are lower than priority 2;
  • the f2 slice type priorities are: all are lower than priority 2;
  • the f3 slice type priorities are: all are lower than priority 2;
  • Method 1 Directly announce that the priority of frequency points between f1, f2 and f3 is the same;
  • Mode 2 according to the frequency point priority information, determine the level between the priority level of the frequency point and the priority level of the current service frequency point;
  • the priority information of frequency points in mode 2 is provided by the network side through cell system information or dedicated signaling, and the priority of frequency points between f1, f2, and f3 is determined according to cell system information or dedicated signaling;
  • Mode 3 According to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the level between the priority level of the frequency point and the priority level of the current service frequency point .
  • Scenario 3 The service frequency point is not included in the frequency point set provided by the network side, then the service frequency point has the lowest priority (lower than the frequency point priority of any frequency point in the frequency point set).
  • Example 6 When the number of (candidate) target reselection cells is greater than or equal to 2, an example of the method for the terminal to select the final target reselection cell
  • Scenario 1 One of the two target reselection cells corresponds to the first type of frequency point, and one cell corresponds to the second type of frequency point, and the terminal selects the first type of frequency point cell;
  • Scenario 2 In the case that only the first type of frequency or the second type of frequency exists in the frequencies corresponding to the two target reselection cells, according to the second preset rule, select from the at least two target reselection cells A target reselection cell is used as the final target reselection cell;
  • Scenario 3 There are the first type of frequency points and the second type of frequency points in the frequency points corresponding to the two target reselection cells, and the number of the first type of frequency points is at least one, and the at least one first type of frequency points When the total number of cells included in the frequency point is at least two, according to the second preset rule, select one cell from the cells included in the at least one first type of frequency point as the final target reselection cell;
  • the above-mentioned second preset rule includes at least one of the following rules:
  • the target reselection cell is used as the final target reselection cell
  • the preset frequency points refer to the frequency points corresponding to the at least two target reselection cells respectively.
  • the solution provided by the embodiment of the present disclosure can ensure the target cell selected by the terminal.
  • the terminal In line with the service requirements of the terminal, the terminal can select the target cell suitable for the service according to different slicing requirements, which ensures the continuity of the terminal slicing service and reduces the secondary cell reselection process caused by the interruption of the slicing service of the terminal.
  • An embodiment of the present disclosure further provides a terminal, as shown in FIG. 6 , including a memory 61 , a processor 62 , a transceiver 63 , and a computer program 64 stored on the memory 61 and running on the processor 62 . ;
  • the processor 62 realizes the following steps when executing the program:
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the terminal receives the first preset information sent by the first network node; determines the target reselection cell according to the reference information; wherein the reference information includes the first preset information and/or second preset information; the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; the second preset information
  • the information includes: preset slice type identification information related to cell selection or reselection obtained by the access layer of the terminal from the non-access layer of the terminal; the identification information of the slice type supported by the frequency point can be obtained in advance, To ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slicing requirements, which ensures the continuity of the terminal slicing service and avoids frequency priority information and cells configured by the network side.
  • the processor is specifically configured to: acquire, according to the reference information, a frequency point whose priority level is higher than the priority level of the current service frequency point in the frequency point set as the first type of frequency point, and use the frequency point
  • the remaining frequency points in the point set except the first type of frequency points are used as the second type of frequency points; for the first type of frequency points, measurement is performed according to a preset period, and the first type of frequency points corresponds to the cell
  • the cell corresponding to the first type of frequency is used as the target reselection cell; for the second type of frequency, the signal quality parameter of the cell corresponding to the current serving frequency
  • the first The cell corresponding to the two types of frequency points is used as the target reselection cell.
  • the satisfying the reselection criterion includes at least one of the following situations: when the signal quality parameter value of the cell corresponding to the first type of frequency is greater than or equal to a second threshold, it is determined that the first type of frequency satisfies Reselection criteria; the signal quality parameter value of the cell corresponding to the frequency of the second type is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency is less than or equal to the fourth threshold and the maintenance duration reaches the first threshold In the case of the time length, it is determined that the second type of frequency point satisfies the reselection criterion; or, between the signal quality parameter value of the cell corresponding to the second type of frequency point and the signal quality parameter value of the cell corresponding to the current serving frequency point. When the difference reaches the fifth threshold and the maintenance duration reaches the second duration, it is determined that the frequency bin of the second type satisfies the reselection criterion.
  • the processor is specifically configured to: determine, according to the reference information, the level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point; according to the determination result , to obtain the first type of frequency points.
  • the frequency point set has the same frequency point as the current service frequency point, and the priority level of the current service frequency point is consistent with the priority level of the same frequency point; or, the frequency point There is no frequency in the set that is the same as the current serving frequency, and the priority of the current serving frequency is lower than the priority of any frequency in the set of frequencies.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or, the second preset information
  • the setting information further includes: type priority information corresponding to the preset slice type identification information.
  • the processor is specifically configured to: in the case that the identification information of all the slice types supported by the frequency point is included in the identification information of all the slice types supported by the current serving frequency point, determine the priority of the frequency point The level is lower than or equal to the priority level of the current service frequency point; or, in the case that the identification information of all slice types supported by the frequency point includes the identification information of all slice types supported by the current service frequency point, determine The priority level of the frequency point is higher than or equal to the priority level of the current service frequency point; or, the identification information of all slice types supported by the frequency point and the identifiers of all slice types supported by the current service frequency point When there is a partial intersection or no intersection between the information, according to the first intersection and the second intersection, determine the level between the priority level of the frequency point and the priority level of the current service frequency point; wherein, the first The first intersection is the intersection between the identification information of all slice types supported by the frequency point and the preset slice type identification information, and the second intersection is the identification information of all slice types supported by the current
  • the number of elements in the first intersection is 0; and/or, after the current service is acquired
  • the number of slice types supported by the frequency point is 0, or if the slice type supported by the current service frequency point is not obtained, the number of elements of the second intersection is 0; and/or, if the slice type is not obtained.
  • the second preset information or the acquired second preset information is empty, the number of elements of the first intersection and the second intersection is 0.
  • the processor is specifically configured to: in the case that the number of elements of the first intersection is greater than the number of elements of the second intersection, determine that the priority level of the frequency point is higher than the current service frequency priority level of the point; in the case that the number of elements of the first intersection is less than the number of elements of the second intersection, determine that the priority level of the frequency point is lower than the priority level of the current service frequency point; The number of elements of the first intersection is equal to the number of elements of the second intersection, and if the number of elements is not 0, determine that the priority of the frequency is equal to the priority of the current service frequency.
  • the priority level when the number of elements in the first intersection and the second intersection is 0, according to the frequency point priority information, determine the priority level of the frequency point and the priority level of the current service frequency point. high or low; or, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the priority level between the frequency point and the priority level of the current service frequency point. high and low.
  • the processor is specifically configured to: determine the The priority level of the frequency point is lower than or equal to the priority level of the current service frequency point; or, the identification information of all slice types supported at the frequency point includes the identification information of all the slice types supported by the current service frequency point.
  • the processor is specifically configured to: in the case that the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determine that the type of the first slice type takes precedence The level is the same as the type priority corresponding to the second identification information, and the type priority level of the first slice type is obtained according to the second identification information and the type priority information; or, in the first slice In the case where the type identification information does not belong to the preset slice type identification information, determine that the type priority of the first slice type is lower than the type priority of each slice type corresponding to the preset slice type identification information The preset priority; wherein, the first slice type is any slice type supported by the frequency point.
  • the processor is specifically configured to: among all the slice types supported by the frequency point, there is at least one slice type whose type priority is higher than the highest type priority corresponding to all the slice types supported by the frequency of the current serving cell. In this case, it is determined that the priority level of the frequency point is higher than the priority level of the current serving frequency point; or, the highest type priority level corresponding to all slice types supported by the frequency point and all the frequency points supported by the current serving cell. In the case where the highest type priorities corresponding to the slices are the same, compare the next highest type priorities corresponding to all the slice types supported by the frequency point and the next highest type priorities corresponding to all the slice types supported by the frequency of the current serving cell.
  • the processor is specifically configured to: when the comparison result indicates that the priority level of the next highest type corresponding to all the slice types supported by the frequency is higher than the next highest priority level corresponding to all the slice types supported by the frequency of the current serving cell In the case of type priority, determine that the priority level of the frequency point is higher than the priority level of the current serving frequency point; when the comparison result indicates that the second highest type priority level corresponding to all slice types supported by the frequency point is lower than the current priority level In the case of the second highest type priority corresponding to all slice types supported by the frequency of the serving cell, determine that the priority of the frequency is lower than the priority of the current serving frequency; when the comparison result indicates that the frequency supported by the frequency In the case where the second highest type priority corresponding to all slice types is the same as the next highest type priority corresponding to all slice types supported by the frequency of the current serving cell, it is determined that the priority of the frequency is equal to the priority of the current serving frequency.
  • the preset operation includes comparing the type priority ranked at the nth position among the type priorities corresponding to all the slice types supported by the frequency point and the type priority corresponding to all the slice types supported by the current service frequency point The level between the type priorities sorted in the nth bit; n is an integer greater than 2.
  • the processor is further configured to: in the case that the number of the target reselection cells is at least two, after determining the target reselection cell according to the reference information, according to a first preset rule, from the One target reselection cell is selected from the at least two target reselection cells as the final target reselection cell; wherein, the first preset rule includes at least one of the following rules: in the at least two target reselection cells corresponding to In the case that the first type of frequency point and the second type of frequency point exist in the frequency point, and the number of cells included in the first type of frequency point is 1, the only cell included in the first type of frequency point is used as the final A target reselection cell; the first type frequency point and the second type frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of the first type frequency point is at least one, so In the case where the total number of cells included in the at least one first-type frequency point is at least two,
  • the second preset rule includes at least one of the following rules: obtaining the number of intersection elements between the identification information of all slice types supported by each frequency point in the preset frequency points and the preset slice type identification information , take the target reselection cell corresponding to the frequency point corresponding to the number of the intersection elements with the largest value as the final target reselection cell; obtain the total number of all slice types supported by each frequency point in the preset frequency points with the largest number The frequency point corresponding to the acquired frequency point is used as the final target re-selection cell; the frequency point with the highest priority in the frequency point priority information among the preset frequency points is acquired, and the acquired frequency point is The target reselection cell corresponding to the frequency point is used as the final target reselection cell; the number of beams of the beams whose signal quality parameter values of the beams corresponding to the at least two target reselection cells are respectively greater than or equal to the sixth threshold is obtained, and the The target reselection cell corresponding to the number
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice in the terminal context information stored by the first network node Select the auxiliary identifier Default NSSAI information; the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; the frequency point priority parameter information in the terminal context information stored by the first network node ; the frequency point set information maintained locally by the first network node, the frequency point set information includes the same-frequency frequency point set information and the inter-frequency frequency point set information; each frequency point in the frequency point set maintained locally by the first network node Identification information of the supported slice types.
  • the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information
  • the frequency points in the set of frequency points are the dedicated frequency points configured by the first network node to the terminal, or the public frequency points of the system information broadcast of the first network node.
  • the processor is specifically configured to: use the transceiver to receive the first preset information broadcast by the first network node through the cell system message; or use the transceiver to receive the first preset information through dedicated signaling
  • the first preset information sent by a network node wherein, the information carried by the dedicated signaling includes at least one of the following information: a dedicated frequency point set configured for the terminal and each frequency point in the dedicated frequency point set The identification information of the slice type supported by the point; the public frequency point set configured for the terminal and the identification information of the slice type supported by each frequency point in the common frequency point set; the dedicated frequency point set configured for the terminal and all configuration information of the effective timer duration of the identification information of the slice type supported by each frequency point in the dedicated frequency point set; the public frequency point set configured for the terminal and the slice type supported by each frequency point in the common frequency point set The valid timer duration configuration information of the identification information; the dedicated frequency point set configured for the terminal and the effective area configuration information of the identification information of the slice type supported by each frequency point in the dedicated frequency
  • the second preset information further includes: the validity auxiliary information corresponding to the preset slice type identification information; in the case that the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state; wherein, the validity auxiliary information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the processor is specifically configured to: determine the target reselection cell according to the first preset information and the second preset information provided to the access stratum of the terminal through the non-access stratum of the terminal.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • the above-mentioned implementation embodiments of the cell reselection method on the terminal side are all applicable to the embodiments of the terminal, and can also achieve the same technical effect.
  • An embodiment of the present disclosure further provides a network node, where the network node is a first network node, as shown in FIG. 7 , including a memory 71 , a processor 72 , a transceiver 73 , and a network node stored in the memory 71 and available at A computer program 74 running on the processor 72; the processor 72 implements the following steps when executing the program:
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the network node provided in the embodiment of the present disclosure sends first preset information to the terminal; wherein, the first preset information includes: a frequency point set generated by the first network node and each of the frequency point sets in the frequency point set The identification information of the slice type supported by the frequency point; thus, the terminal can obtain the identification information of the slice type supported by the frequency point in advance to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can choose according to different slice requirements.
  • the target cell of the service ensures the continuity of the terminal slicing service, and avoids the problem that the target cell cannot be determined according to the frequency priority information and cell signal strength configured on the network side to ensure the continuity of the terminal slicing service;
  • the secondary cell reselection process caused by the service interruption reduces the service delay, and solves the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice in the terminal context information stored by the first network node Select the auxiliary identifier Default NSSAI information; the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; the frequency point priority parameter information in the terminal context information stored by the first network node ; the frequency point set information maintained locally by the first network node, the frequency point set information includes the same-frequency frequency point set information and the inter-frequency frequency point set information; each frequency point in the frequency point set maintained locally by the first network node Identification information of the supported slice types.
  • the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents a communication interface between 4G wireless access network nodes; Xn The interface represents the communication interface between the 5G wireless access network nodes; the S1 interface represents the communication interface between the 4G wireless access network node and the 4G core network; the NG interface represents the communication between the 5G wireless access network node and the 5G core network interface; the F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU- Communication interface between the CP part and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points of system information broadcast by the first network node.
  • the processor is specifically configured to: use the transceiver to broadcast the first preset information through a cell system message; or use the transceiver to send the first preset information to the terminal through dedicated signaling;
  • the information carried by the dedicated signaling includes at least one of the following information: a dedicated frequency point set configured for the terminal and identification information of the slice type supported by each frequency point in the dedicated frequency point set;
  • the dedicated frequency point set configured for the terminal and the dedicated frequency point set supported by each frequency point in the dedicated frequency point set
  • Configuration information of the effective timer duration of the identification information of the slice type configuration information of the effective timer duration of the identification information of the slice type supported by the common frequency point set configured to the terminal and each frequency point in the common frequency point set;
  • the above-mentioned implementation embodiments of the method for cell reselection on the side of the first network node are all applicable to the embodiments of the network node, and can also achieve the same technical effect.
  • An embodiment of the present disclosure further provides a network node, where the network node is a second network node, as shown in FIG. 8 , including a memory 81 , a processor 82 , a transceiver 83 , and a network node stored on the memory 81 and available at A computer program 84 running on the processor 82; the processor 82 implements the following steps when executing the program:
  • the terminal's default slice selection auxiliary identifier Default NSSAI information or the configured slice selection auxiliary identifier Configured NSSAI information is sent to the first network node through the interface protocol.
  • the network node provided by the embodiment of the present disclosure sends the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information to the first network node through the interface protocol; realizes that the first network node can send the terminal to the terminal.
  • the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; thereby supporting the terminal to be able to By obtaining the identification information of the slice type supported by the frequency point in advance, it is ensured that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slice requirements, ensuring the continuity of the terminal slice service.
  • the target cell cannot guarantee the continuity of the terminal slice service when the target cell is determined according to the frequency priority information and cell signal strength configured on the network side; at the same time, the secondary cell reselection process caused by the interruption of the slice service of the terminal is reduced, and the service is reduced.
  • the delay is a good solution to the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents the communication interface between 4G wireless access network nodes; Xn interface represents 5G wireless The communication interface between the access network nodes; the S1 interface represents the communication interface between the 4G wireless access network node and the 4G core network; the NG interface represents the communication interface between the 5G wireless access network node and the 5G core network; the F1 interface Represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU-CP part of the gNB-CU and the gNB - Communication interface between user plane gNB-CU-UP parts among CUs.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the processor is further configured to: configure second preset information to the non-access stratum of the terminal through a non-access stratum protocol; wherein the second preset information includes: cell selection of the terminal Or reselect the relevant preset slice type identification information; the second network node is the mobility management function AMF, the unified data management platform UDM or the session management function SMF.
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information; wherein, the validity auxiliary information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the above-mentioned implementation embodiments of the cell reselection method on the second network node side are all applicable to the embodiments of the network node, and can also achieve the same technical effect.
  • Embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, implements the foregoing cell reselection method on the terminal side, the first network node side, or the second network node side A step of.
  • the above-mentioned implementation embodiments of the cell reselection method on the terminal side, the first network node side or the second network node side are all applicable to the embodiments of the computer-readable storage medium, and can also achieve the same technical effect. .
  • An embodiment of the present disclosure further provides a cell reselection apparatus, which is applied to a terminal, as shown in FIG. 9 , including:
  • the first receiving module 91 is configured to receive the first preset information sent by the first network node;
  • a first determining module 92 configured to determine the target reselection cell according to the reference information
  • the reference information includes the first preset information and/or the second preset information
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set;
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal.
  • the cell reselection apparatus receives the first preset information sent by the first network node; determines the target reselection cell according to the reference information; wherein the reference information includes the first preset information and/or second preset information; the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; the first preset information
  • the second preset information includes: preset slice type identification information related to cell selection or reselection obtained by the access stratum of the terminal from the non-access stratum of the terminal;
  • the identification information ensures that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slicing requirements, which ensures the continuity of the terminal slicing service and avoids the frequency point priority configured by the network side.
  • the problem that the target cell cannot guarantee the continuity of the terminal slice service is determined by the information and the signal strength of the cell; at the same time, the secondary cell reselection process caused by the interruption of the slice service of the terminal is reduced, and the service delay is reduced, which is a good solution to the cell in the related art.
  • the reselection scheme has the problems of poor service continuity and serious business delay.
  • the first determining module includes: a first processing sub-module, configured to acquire, according to the reference information, a frequency point whose priority level is higher than that of the current service frequency point in the frequency point set as the first type frequency points, and use the remaining frequency points in the set of frequency points except the first type of frequency points as the second type of frequency points; the second processing sub-module is used for the first type of frequency points, according to the preset frequency points.
  • the third processor The module is configured to, for the second type of frequency point, start the measurement of the second type of frequency point when the signal quality parameter value of the cell corresponding to the current serving frequency point is lower than the first threshold, and at the In the case that the signal quality parameter value of the cell corresponding to the frequency point of the second type satisfies the reselection criterion, the cell corresponding to the frequency point of the second type is used as the target cell for reselection.
  • satisfying the reselection criterion includes at least one of the following cases: in the case that the signal quality parameter value of the cell corresponding to the first type of frequency point is greater than or equal to a second threshold, determine that the first type of frequency The type frequency point satisfies the reselection criterion; the signal quality parameter value of the cell corresponding to the second type frequency point is greater than or equal to the third threshold, and the signal quality parameter value of the cell corresponding to the current serving frequency point is less than or equal to the fourth threshold value and maintains When the duration reaches the first duration, it is determined that the frequency of the second type satisfies the reselection criterion; or, the signal quality parameter value of the cell corresponding to the frequency of the second type and the signal quality parameter of the cell corresponding to the current service frequency When the difference between the values reaches the fifth threshold and the sustaining duration reaches the second duration, it is determined that the frequency bin of the second type satisfies the rese
  • the first processing sub-module includes: a first determination unit, configured to determine, according to the reference information, the difference between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point
  • the first obtaining unit is configured to obtain the first type of frequency points according to the determination result.
  • the same frequency point as the current service frequency point exists in the frequency point set, and the priority level of the current service frequency point is consistent with the priority level of the same frequency point; or, the There is no frequency in the frequency point set that is the same as the current service frequency point, and the priority level of the current service frequency point is lower than the priority level of any frequency point in the frequency point set.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node; and/or, the second preset information further includes: Including: type priority information corresponding to the preset slice type identification information.
  • the first determination unit includes: a first determination subunit, used for the case where the identification information of all slice types supported by the frequency point is included in the identification information of all slice types supported by the current service frequency point Next, determine that the priority level of the frequency point is lower than or equal to the priority level of the current service frequency point; or, the identification information of all slice types supported by the frequency point includes all the slices supported by the current service frequency point In the case of type identification information, determine that the priority of the frequency point is higher than or equal to the priority level of the current service frequency point; or, the identification information of all slice types supported at the frequency point is the same as the current service frequency point.
  • the first intersection is the intersection between the identification information of all slice types supported by the frequency and the preset slice type identification information
  • the second intersection is the current serving frequency. The intersection between the identification information of all supported slice types and the identification information of the preset slice type.
  • the number of elements in the first intersection is 0; and/or, after the current service is acquired
  • the number of slice types supported by the frequency point is 0, or if the slice type supported by the current service frequency point is not obtained, the number of elements of the second intersection is 0; and/or, if the slice type is not obtained.
  • the second preset information or the acquired second preset information is empty, the number of elements of the first intersection and the second intersection is 0.
  • the determining, according to the first intersection and the second intersection determines the level between the priority level of the frequency point and the priority level of the current service frequency point, including: the number of elements in the first intersection is greater than or equal to In the case of the number of elements of the second intersection, it is determined that the priority of the frequency point is higher than the priority of the current service frequency point; when the number of elements of the first intersection is smaller than that of the second intersection.
  • the number of elements it is determined that the priority level of the frequency point is lower than the priority level of the current service frequency point; the number of elements in the first intersection is equal to the number of elements in the second intersection, and all In the case where the number of elements is not 0, determine that the priority of the frequency is equal to the priority of the current serving frequency; in the case that the number of elements of the first intersection and the second intersection is 0,
  • the frequency point priority information determine the level between the priority level of the frequency point and the priority level of the current service frequency point; or, according to the number of all slice types supported by the frequency point and the current service frequency point
  • the number of all supported slice types determines the level between the priority level of the frequency point and the priority level of the current service frequency point.
  • the first determination unit includes: a third determination subunit, where the identification information of all slice types supported at the frequency point is included in the identification information of all slice types supported by the current service frequency point In the case of identification information, determine that the priority level of the frequency point is lower than or equal to the priority level of the current serving frequency point; or, the fourth determination subunit is used for the identification of all slice types supported by the frequency point In the case where the information includes identification information of all slice types supported by the current service frequency point, determine that the priority level of the frequency point is higher than or equal to the priority level of the current service frequency point; or, the first processing subunit, for obtaining each of the frequency points in the frequency point set according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set.
  • the type priority level of each slice type supported by the frequency point; the second determination subunit is used to determine the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service
  • the frequency point is obtained according to the preset slice type identification information, the type priority information, the frequency point set, and the identification information of the slice type supported by each frequency point in the frequency point set
  • the type priority level of each slice type supported by each frequency point in the set includes: in the case that the identification information of the first slice type is the same as the second identification information in the preset slice type identification information, determining the The type priority of the first slice type is the same as the type priority corresponding to the second identification information, and the type priority of the first slice type is obtained according to the second identification information and the type priority information; or , in the case that the identification information of the first slice type does not belong to the preset slice type identification information, determine that the type priority level of the first slice type is lower than that corresponding to the preset slice type identification information
  • the preset priority of the type priority of each slice type wherein, the first slice type is any slice type supported by the frequency point.
  • determining the priority level between the priority level corresponding to each frequency point in the frequency point set and the priority level of the current service frequency point according to the type priority level includes: supporting the frequency point at the frequency point In the case where at least one slice type has a type priority higher than the highest type priority corresponding to all slice types supported by the frequency of the current serving cell, it is determined that the priority of the frequency is higher than the current service The priority level of the frequency point; or, when the highest type priority level corresponding to all the slice types supported by the frequency point is the same as the highest type priority level corresponding to all the slice types supported by the current serving cell frequency point, compare the frequency point The level between the priority of the next highest type corresponding to all the supported slice types and the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell is determined according to the comparison result between the priority of the frequency and the current serving frequency.
  • the highest type priority corresponding to all slice types supported by the frequency is the same as the highest type priority corresponding to all slices supported by the frequency of the current serving cell, according to the The frequency point priority information, to determine the level between the priority level of the frequency point and the priority level of the current serving frequency point; or, the highest type priority level corresponding to all slice types supported by the frequency point and the current serving cell.
  • the highest type priorities corresponding to all the slices supported by the frequency point are the same, according to the number of all slice types supported by the frequency point and the number of all slice types supported by the current service frequency point, determine the frequency point.
  • the level between the priority level and the priority level of the current serving frequency point; or, the highest type priority level corresponding to all the slice types supported at the frequency point is lower than the lowest type priority level corresponding to all the slice types supported by the current serving cell frequency point In the case of the frequency point, it is determined that the priority level of the frequency point is lower than the priority level of the current service frequency point.
  • the determining, according to the comparison result, the priority level between the priority level of the frequency point and the priority level of the current service frequency point includes: the comparison result indicates that the next highest type corresponding to all the slice types supported by the frequency point has priority In the case where the level is higher than the second highest type priority corresponding to all the slice types supported by the frequency of the current serving cell, it is determined that the priority level of the frequency point is higher than the priority level of the current serving frequency point; In the case where the priority of the next highest type corresponding to all the slice types supported by the frequency is lower than the priority of the next highest type corresponding to all the slice types supported by the frequency of the current serving cell, determine that the priority of the frequency is lower than the current priority The priority level of the serving frequency point; when the comparison result indicates that the second highest type priority level corresponding to all the slice types supported by the frequency point is the same as the next highest type priority level corresponding to all the slice types supported by the current serving cell frequency point, Determine that the priority level of the frequency point is equal to the priority level of the current serving frequency
  • the cell reselection apparatus further includes: a first selection module, configured to, when the number of the target reselection cells is at least two, after determining the target reselection cell according to the reference information, According to a first preset rule, a target reselection cell is selected from the at least two target reselection cells as the final target reselection cell; wherein, the first preset rule includes at least one of the following rules: In the case that the first type of frequency point and the second type of frequency point exist in the frequency points corresponding to the at least two target reselection cells, and the number of cells included in the first type of frequency point is 1, the first type of frequency point The only cell included in one type of frequency point is the final target reselection cell; the first type of frequency point and the second type of frequency point exist in the frequency points corresponding to the at least two target re-selection cells, and the first type of frequency point
  • the number of type frequency points is at least one, and the total number of cells included
  • the second preset rule includes at least one of the following rules: obtaining the number of intersection elements between the identification information of all slice types supported by each frequency point in the preset frequency points and the preset slice type identification information , take the target reselection cell corresponding to the frequency point corresponding to the number of the intersection elements with the largest value as the final target reselection cell; obtain the total number of all slice types supported by each frequency point in the preset frequency points with the largest number The frequency point corresponding to the acquired frequency point is used as the final target re-selection cell; the frequency point with the highest priority in the frequency point priority information among the preset frequency points is acquired, and the acquired frequency point is The target reselection cell corresponding to the frequency point is used as the final target reselection cell; Obtain the number of beams of the beams whose signal quality parameter values of the beams corresponding to the at least two target reselection cells are greater than or equal to the sixth threshold, and set the The target reselection cell corresponding to the number
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice in the terminal context information stored by the first network node Select the auxiliary identifier Default NSSAI information; the configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; the frequency point priority parameter information in the terminal context information stored by the first network node ; the frequency point set information maintained locally by the first network node, the frequency point set information includes the same-frequency frequency point set information and the inter-frequency frequency point set information; each frequency point in the frequency point set maintained locally by the first network node Identification information of the supported slice types.
  • the preset information includes At least one item of the following information: the allowed network slice selection auxiliary identifier Allowed NSSAI information
  • the frequency points in the frequency point set are dedicated frequency points configured by the first network node to the terminal, or public frequency points for broadcasting system information of the first network node.
  • the first receiving module includes: a first receiving sub-module, configured to receive the first preset information broadcast by the first network node through the cell system message; or receive the first network through dedicated signaling The first preset information sent by the node; wherein, the information carried by the dedicated signaling includes at least one of the following information: a set of dedicated frequency points configured for the terminal and a set of dedicated frequency points in the set of dedicated frequency points.
  • the second preset information further includes: the validity auxiliary information corresponding to the preset slice type identification information; in the case that the validity auxiliary information matches the validity auxiliary information of the current service frequency point , the preset slice type identification information is in a valid state; wherein, the validity auxiliary information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the first determining module includes: a first determining sub-module, configured to provide the access layer of the terminal through the non-access layer of the terminal according to the first preset information and the first determination module. 2. Preset information to determine the target reselection cell.
  • the second preset information is preconfigured for the terminal at the non-access stratum, or configured by the network node for the non-access stratum through a non-access stratum protocol.
  • the above-mentioned implementation embodiments of the cell reselection method on the terminal side are all applicable to the embodiments of the cell reselection apparatus, and can also achieve the same technical effect.
  • An embodiment of the present disclosure further provides a cell reselection apparatus, which is applied to the first network node, as shown in FIG. 10 , including:
  • a first sending module 101 configured to send first preset information to a terminal
  • the first preset information includes: a frequency point set generated by the first network node and identification information of a slice type supported by each frequency point in the frequency point set.
  • the cell reselection apparatus provided in the embodiment of the present disclosure sends first preset information to a terminal, wherein the first preset information includes: a frequency point set and the frequency point set generated by the first network node
  • the identification information of the slice type supported by each frequency point in the middle so that the terminal can obtain the identification information of the slice type supported by the frequency point in advance, so as to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can choose according to different slice requirements.
  • the target cell suitable for this service ensures the continuity of the terminal slicing service, and avoids the problem that the target cell cannot be determined according to the frequency priority information and cell signal strength configured on the network side to ensure the continuity of the terminal slicing service; at the same time, it reduces the number of terminals Due to the secondary cell reselection process caused by the interruption of the slice service, the service delay is reduced, and the problems of poor service continuity and serious service delay in the cell reselection scheme in the related art are well solved.
  • the first preset information further includes: frequency point priority information corresponding to each frequency point in the frequency point set configured by the first network node.
  • the frequency point set and the identification information of the slice type supported by each frequency point in the frequency point set are generated by the first network node according to preset information; wherein the preset information includes the following information: At least one item: the allowed network slice selection auxiliary identifier Allowed NSSAI information in the terminal context information stored by the first network node; the default network slice selection auxiliary identifier Default in the terminal context information stored by the first network node NSSAI information; configured network slice selection auxiliary identifier Configured NSSAI information in the terminal context information stored by the first network node; frequency point priority parameter information in the terminal context information stored by the first network node; Frequency point set information maintained locally by a network node, the frequency point set information includes intra-frequency frequency point set information and inter-frequency frequency point set information; slices supported by each frequency point in the frequency point set locally maintained by the first network node Type identification information.
  • the Default NSSAI information or the Configured NSSAI information is obtained from the second network node through an interface protocol.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents a communication interface between 4G wireless access network nodes; Xn The interface represents the communication interface between the 5G wireless access network nodes; the S1 interface represents the communication interface between the 4G wireless access network node and the 4G core network; the NG interface represents the communication between the 5G wireless access network node and the 5G core network interface; the F1 interface represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU- Communication interface between the CP part and the user plane gNB-CU-UP part in the gNB-CU.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the frequency points in the set of frequency points are dedicated frequency points configured by the first network node to the terminal, or public frequency points of system information broadcast by the first network node.
  • the first sending module includes: a first sending sub-module, configured to broadcast the first preset information through a cell system message; or send the first preset information to the terminal through dedicated signaling;
  • the information carried by the dedicated signaling includes at least one of the following information: a dedicated frequency point set configured for the terminal and identification information of the slice type supported by each frequency point in the dedicated frequency point set; configured for the terminal The set of public frequency points and the identification information of the slice type supported by each frequency point in the public frequency point set; the set of dedicated frequency points configured for the terminal and the slice type supported by each frequency point in the dedicated frequency point set
  • the valid timer duration configuration information of the identification information the configuration information of the effective timer duration configured to the common frequency point set of the terminal and the identification information of the slice type supported by each frequency point in the common frequency point set;
  • the above-mentioned implementation embodiments of the cell reselection method on the first network node side are all applicable to the embodiments of the cell reselection apparatus, and can also achieve the same technical effect.
  • An embodiment of the present disclosure further provides a cell reselection apparatus, which is applied to a second network node, as shown in FIG. 11 , including:
  • the second sending module 111 is configured to send the default slice selection auxiliary identifier Default NSSAI information of the terminal or the configured slice selection auxiliary identifier Configured NSSAI information to the first network node through the interface protocol.
  • the cell reselection apparatus sends the default slice selection assistance identifier Default NSSAI information of the terminal or the configured slice selection assistance identifier Configured NSSAI information to the first network node through an interface protocol;
  • the terminal sends the first preset information; wherein, the first preset information includes: the frequency point set generated by the first network node and the identification information of the slice type supported by each frequency point in the frequency point set; thereby supporting
  • the terminal can obtain the identification information of the slice type supported by the frequency point in advance to ensure that the target cell selected by the terminal meets the service requirements of the terminal, and the terminal can select the target cell suitable for the service according to different slice requirements, ensuring the continuity of the terminal slice service.
  • the interface type of the interface protocol is X2 interface, Xn interface, S1 interface, NG interface, F1 interface or E1 interface; wherein, X2 interface represents the communication interface between 4G wireless access network nodes; Xn interface represents 5G wireless The communication interface between the access network nodes; the S1 interface represents the communication interface between the 4G wireless access network node and the 4G core network; the NG interface represents the communication interface between the 5G wireless access network node and the 5G core network; the F1 interface Represents the communication interface between the centralized unit gNB-CU and the distributed unit gNB-DU in the radio access network node using the new air interface technology; the E1 interface represents the control plane gNB-CU-CP part of the gNB-CU and the gNB - Communication interface between user plane gNB-CU-UP parts among CUs.
  • the second network node is a distribution unit DU, a radio access network RAN node, a centralized unit control plane CU-CP, an access and mobility management function AMF, a centralized unit user plane CU-UP, and unified data Management platform UDM or session management function SMF.
  • the cell reselection apparatus further includes: a first configuration module, configured to configure second preset information to the non-access stratum of the terminal through a non-access stratum protocol; wherein the second preset information It is assumed that the information includes: preset slice type identification information related to cell selection or reselection of the terminal; and the second network node is a mobility management function AMF, a unified data management platform UDM or a session management function SMF.
  • the second preset information further includes: type priority information corresponding to the preset slice type identification information.
  • the second preset information further includes: validity auxiliary information corresponding to the preset slice type identification information; wherein, the validity auxiliary information includes: public land mobile network PLMN information, tracking area TA information and/or frequency band information.
  • the above-mentioned implementation embodiments of the cell reselection method on the second network node side are all applicable to the embodiments of the cell reselection apparatus, and can also achieve the same technical effect.
  • modules/submodules/units/subunits may be implemented in software so as to be executed by various types of processors.
  • an identified executable code module may comprise one or more physical or logical blocks of computer instructions, which may be structured as objects, procedures, or functions, for example. Nonetheless, the executable code of the identified modules need not be physically located together, but may include different instructions stored in different bits that, when logically combined, constitute the module and implement the specification of the module Purpose.
  • an executable code module may be a single instruction or many instructions, and may even be distributed over multiple different code segments, among different programs, and across multiple memory devices.
  • operational data may be identified within modules, and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations (including over different storage devices), and may exist at least in part only as electronic signals on a system or network.
  • a module When a module can be implemented by software, considering the level of hardware technology in the related technology, a module that can be implemented by software can build a corresponding hardware circuit to realize the corresponding module without considering the cost.
  • the hardware circuits include conventional very large scale integration (VLSI) circuits or gate arrays as well as related art semiconductors such as logic chips, transistors, or other discrete components.
  • VLSI very large scale integration
  • a module may also be implemented in programmable hardware devices, such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.
  • modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module.
  • the implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuit (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processors
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本公开提供了一种小区重选方法、装置、终端及网络节点，其中，小区重选方法包括：接收第一网络节点发送的第一预设信息；根据参考信息，确定目标重选小区；参考信息包括第一预设信息和/或第二预设信息；第一预设信息包括：第一网络节点生成的频点集合和频点集合中各个频点所支持切片类型的标识信息；第二预设信息包括：终端接入层从终端非接入层获取的小区选择或重选相关的预设切片类型标识信息。

Description

小区重选方法、装置、终端及网络节点
相关申请的交叉引用
本申请主张在2020年7月15日在中国提交的中国专利申请号No.202010683120.1的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种小区重选方法、装置、终端及网络节点。
背景技术
目前，切片在终端侧的应用采取先注册再发起业务的原则进行，RAN(无线接入网)侧不同频点支持的切片种类可能因为运营商部署不同而出现差异化，但目前协议中终端侧的小区重选行为只能按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区，即使网络侧配置给终端的专用频点优先级考虑了终端注册的Allowed NSSAI信息，终端也无法提前知道选择的目标重选小区支持哪些终端配置的切片类型(Configured NSSAI)，如果终端选择的目标小区正好不支持终端准备使用的切片，则终端的业务将会中断或者花费更多时间重选到支持其切片业务的小区上。
发明内容
本公开的目的在于提供一种小区重选方法、装置、终端及网络节点，以解决相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
为了解决上述技术问题，本公开实施例提供一种小区重选方法，应用于终端，包括：
接收第一网络节点发送的第一预设信息；
根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点 集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
可选的，所述根据参考信息，确定目标重选小区，包括：
根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；
对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
可选的，所述满足重选准则包括以下情况中的至少一个：
在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；
在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，
在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
可选的，所述根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，包括：
根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；
根据确定结果，获取所述第一类型频点。
可选的，所述频点集合中存在与所述当前服务频点相同的频点，且所述 当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，
所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，
所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
可选的，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；
其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
可选的，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，
在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，
在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
可选的，所述根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低，包括：
在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；
在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；
根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得 到所述频点集合中各个频点所支持的各个切片类型的类型优先等级，包括：
在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
其中，所述第一切片类型为所述频点所支持的任一个切片类型。
可选的，所述根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频 点的优先等级低于所述当前服务频点的优先等级。
可选的，所述根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低，包括：
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；
其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
可选的，在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，还包括：
根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
其中，所述第一预设规则包括以下规则中的至少一个：
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
可选的，所述第二预设规则包括以下规则中的至少一个：
获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；
获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；
其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助 标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述接收第一网络节点发送的第一预设信息，包括：
接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，
通过专用信令，接收第一网络节点发送的第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
可选的，所述根据参考信息，确定目标重选小区，包括：
根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
可选的，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
本公开实施例还提供了一种小区重选方法，应用于第一网络节点，包括：
向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述向终端发送第一预设信息，包括：
通过小区系统消息广播第一预设信息；或者，
通过专用信令，向终端发送第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
本公开实施例还提供了一种小区重选方法，应用于第二网络节点，包括：
通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，还包括：
通过非接入层协议向所述终端的非接入层配置第二预设信息；
其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；
所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
本公开实施例还提供了一种终端，包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
通过所述收发机接收第一网络节点发送的第一预设信息；
根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
可选的，所述处理器具体用于：
根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；
对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
可选的，所述满足重选准则包括以下情况中的至少一个：
在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；
在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，
在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
可选的，所述处理器具体用于：
根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当 前服务频点的优先等级之间的高低；
根据确定结果，获取所述第一类型频点。
可选的，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，
所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，
所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
可选的，所述处理器具体用于：
在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；
其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
可选的，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，
在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，
在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
可选的，所述处理器具体用于：
在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；
在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述处理器具体用于：
在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；
根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述处理器具体用于：
在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识 信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
其中，所述第一切片类型为所述频点所支持的任一个切片类型。
可选的，所述处理器具体用于：
在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
可选的，所述处理器具体用于：
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级 高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；
其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
可选的，所述处理器还用于：
在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
其中，所述第一预设规则包括以下规则中的至少一个：
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
可选的，所述第二预设规则包括以下规则中的至少一个：
获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；
获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；
其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述处理器具体用于：
利用所述收发机接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，
利用所述收发机，通过专用信令，接收第一网络节点发送的第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
可选的，所述处理器具体用于：
根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提 供的第二预设信息，确定目标重选小区。
可选的，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
本公开实施例还提供了一种网络节点，所述网络节点为第一网络节点，包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
通过所述收发机向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述处理器具体用于：
利用所述收发机，通过小区系统消息广播第一预设信息；或者，
利用所述收发机，通过专用信令，向终端发送第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
本公开实施例还提供了一种网络节点，所述网络节点为第二网络节点， 包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
利用所述收发机，通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，所述处理器还用于：
通过非接入层协议向所述终端的非接入层配置第二预设信息；
其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；
所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述终端侧、第一网络节点侧或第二网络节点侧的小区重选方法的步骤。
本公开实施例还提供了一种小区重选装置，应用于终端，包括：
第一接收模块，用于接收第一网络节点发送的第一预设信息；
第一确定模块，用于根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
可选的，所述第一确定模块，包括：
第一处理子模块，用于根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
第二处理子模块，用于对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；
第三处理子模块，用于对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
可选的，所述满足重选准则包括以下情况中的至少一个：
在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；
在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，
在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小 区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
可选的，所述第一处理子模块，包括：
第一确定单元，用于根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；
第一获取单元，用于根据确定结果，获取所述第一类型频点。
可选的，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，
所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，
所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
可选的，所述第一确定单元，包括：
第一确定子单元，用于在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；
其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
可选的，在所述第一网络节点未配置所述频点支持的切片类型的情况下， 所述第一交集的元素个数为0；和/或，
在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，
在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
可选的，所述根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低，包括：
在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；
在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述第一确定单元，包括：
第三确定子单元，用于在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
第四确定子单元，用于在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
第一处理子单元，用于根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识 信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；
第二确定子单元，用于根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
可选的，所述根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级，包括：
在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
其中，所述第一切片类型为所述频点所支持的任一个切片类型。
可选的，所述根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小 区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
可选的，所述根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低，包括：
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；
其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
可选的，还包括：
第一选取模块，用于在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，根据第一预设规则，从所述至少 两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
其中，所述第一预设规则包括以下规则中的至少一个：
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
可选的，所述第二预设规则包括以下规则中的至少一个：
获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；
获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；
其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述第一接收模块，包括：
第一接收子模块，用于接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，
通过专用信令，接收第一网络节点发送的第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支 持切片类型的标识信息的有效区域配置信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
可选的，所述第一确定模块，包括：
第一确定子模块，用于根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
可选的，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
本公开实施例还提供了一种小区重选装置，应用于第一网络节点，包括：
第一发送模块，用于向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
可选的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
可选的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
其中，所述预设信息包括以下信息中的至少一项：
所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
可选的，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
可选的，所述第一发送模块，包括：
第一发送子模块，用于通过小区系统消息广播第一预设信息；或者，
通过专用信令，向终端发送第一预设信息；
其中，所述专用信令承载的信息包括以下信息中的至少一项：
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支 持切片类型的标识信息的有效定时器时长配置信息；
配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
本公开实施例还提供了一种小区重选装置，应用于第二网络节点，包括：
第二发送模块，用于通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
可选的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
可选的，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
可选的，还包括：
第一配置模块，用于通过非接入层协议向所述终端的非接入层配置第二预设信息；
其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；
所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的 类型优先级信息。
可选的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
本公开的上述技术方案的有益效果如下：
上述方案中，所述小区重选方法通过接收第一网络节点发送的第一预设信息；根据参考信息，确定目标重选小区；其中，所述参考信息包括所述第一预设信息和/或第二预设信息；所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息；能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
附图说明
图1为本公开实施例的小区重选方法流程示意图一；
图2为本公开实施例的小区重选方法流程示意图二；
图3为本公开实施例的小区重选方法流程示意图三；
图4为本公开实施例的第一预设信息传输示意图一；
图5为本公开实施例的第一预设信息传输示意图二；
图6为本公开实施例的终端结构示意图；
图7为本公开实施例的网络节点结构示意图一；
图8为本公开实施例的网络节点结构示意图二；
图9为本公开实施例的小区重选装置结构示意图一；
图10为本公开实施例的小区重选装置结构示意图二；
图11为本公开实施例的小区重选装置结构示意图三。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
首先对相关内容介绍如下：
切片(Slice)是NR(New RAT，新无线接入技术)系统新引入的概念，主要目的在于为不同的业务划分不同的资源管理模式，从而在增加业务隔离度的同时也能根据业务类型优化资源管理方式，
关于NR切片：
网络切片是一种面向业务的资源封装概念，一种网络切片通过NSSAI(Network Slice Selection Assistant Identity，网络切片选择辅助标识)唯一标示，同时也对应着一种类型的资源配置。不同的核心网可以根据需求支持不同类型的网络切片，与LTE(长期演进)系统注册不同的是，终端在网络中使用某种切片之前需要进行该切片的注册，终端只有在该切片注册成功后才能发起该切片对应的会话建立过程。切片注册过程中，终端请求注册的NSSAI信息(Request NSSAI)通过消息5携带到接入网侧，且约束终端一次最多只能注册8个S-NSSAI(Single NSSAI，单网络切片选择辅助标识)信息；核心网根据终端签约信息、终端的Request NSSAI、本地支持的切片信息以及本地策略生成终端的Allowed NSSAI以及Rejected(拒绝接受的)NSSAI。
终端也会预配置或者从核心网获取Configured NSSAI，该配置是PLMN唯一的，如果终端配置的某一PLMN没有配置Configured NSSAI，则使用Default NSSAI信息。
NR系统核心网定义，一个切片对应一个S-NSSAI标识，一个S-NSSAI标识由切片类型标识SST(切片Slice/服务类型Service Type)和切片区分标识SD(Slice Differentiator，切片差异区分器)组成，其中切片类型标识SST占用8个比特且是必须出现的，切片区分标识SD占用24个比特且是可选出现的。
此外，关于NR系统中空闲态(无线资源控制空闲态RRC_IDLE)和非激活态(无线资源控制非激活态RRC_INACTIVE)终端的移动性管理方法：
虽然NR系统引入了非激活态，但是其移动性管理方式和空闲态差别不大，由于空闲态和非激活态的移动性管理由终端自己控制，因而接入网侧只能通过改变如频点优先级等信息间接控制终端的移动性，而频点优先级包含两个层次的含义，第一种称作终端专用频点优先级，该优先级是终端从连接释放消息中从接入网侧获取的配置信息，在一定的时间内有效；第二种称作公共频点优先级，每一个小区都会在自己的系统消息中广播公共频点优先级信息，目的在于，当终端没有专用频点优先级或者专用频点优先级失效时，终端可以使用小区广播的公共频点优先级继续进行小区重选，由于频点优先级信息通常都是频点负载及运营商部署决定的产物，因而频点优先级信息对于接入网侧来讲是间接控制终端移动性的有利工具，也是保证网络高效合理运营的重要特性之一。
对于专用频点优先级，NR系统相比于LTE系统考虑了切片带来的影响，具体为当核心网在生成单个终端的频点优先级参数RFSP(无线接入技术RAT和/或频点选择优先级frequency selection priority)时会考虑终端注册成功的切片信息(也就是Allowed NSSAI List(列表))，考虑了切片信息后生成的频点优先级参数RFSP会连同终端的Allowed NSSAI List共同作为终端上下文的一部分被核心网侧传递给接入网侧，当接入网侧准备释放该终端时，又会根据接入网侧负载等实现考虑如何通过已知的该终端切片信息及保存的终端参数RFSP生成配置给该终端的专用频点优先级信息，并通过连接释放消息将专用频点优先级配置给该终端。
对于公共频点优先级，通常来讲小区是根据区域各频点负载及部署规划决定广播的公共频点优先级信息中各频点对应的优先级大小。目前并没有考虑切片相关的过程对于公共频点优先级的影响。
基于以上，本公开针对相关的技术中小区重选方案存在服务连续性差、业务延迟严重的问题，提供一种小区重选方法，应用于终端，如图1所示，包括：
步骤11：接收第一网络节点发送的第一预设信息；
步骤12：根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
其中，所述标识信息可以为S-NSSAI标识信息，但并不以此为限。关于预设切片标识信息的数量可以是一个或者至少两个，此外，预设切片标识信息可以是Allowed NSSAI信息、Default NSSAI信息或者Configured NSSAI信息(集合)中的信息。
本公开实施例提供的所述小区重选方法通过接收第一网络节点发送的第一预设信息；根据参考信息，确定目标重选小区；其中，所述参考信息包括所述第一预设信息和/或第二预设信息；所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息；能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述根据参考信息，确定目标重选小区，包括：根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第 二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
关于第二类型频点：对于与当前服务节点同等级的第二类型频点，可以是在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量；
对于低于当前服务频点等级的第二类型频点，可以是在当前服务频点对应小区的信号质量参数值低于第一阈值，且邻区信号质量参数值高于第七阈值的情况下，启动对所述第二类型频点的测量。
另外，所述信号质量参数值指的是RSRP(参考信号接收功率)值、RSRQ(参考信号接收质量)值及SINR(信号与干扰加噪声比)值中的至少一个。
其中，所述满足重选准则包括以下情况中的至少一个：在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
具体的，所述根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，包括：根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；根据确定结果，获取所述第一类型频点。
本公开实施例中，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
进一步的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
具体的，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
更具体的，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，在(所述终端的接入层)未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
本公开实施例中，所述根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低，包括：在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服 务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
具体的，关于“根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低”，可以是频点所支持的切片类型的个数越多，优先等级越高。
本公开实施例中，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
具体的，所述根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级，包括：在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；其中，所述第一切片类型为所述频点所支持的任一个切片类型。
其中，所述根据所述类型优先等级，确定所述频点集合中各个频点对应 的优先等级与当前服务频点的优先等级之间的高低，包括：在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同(包含了上述第一交集和第二交集的元素个数均为0的情况)的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
具体的，所述根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低，包括：在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结 果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
本公开实施例中，在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，还包括：根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；其中，所述第一预设规则包括以下规则中的至少一个：在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
在此说明，一个频点可能包括(或对应)至少两个小区。
具体的，所述第二预设规则包括以下规则中的至少一个：获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区； 获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
关于所述第二预设规则的实现可以具体表现为以下涉及的四个阶段；小区信号质量参数值指的是RSRP值、RSRQ值及SINR值中的至少一个；小区波束信号质量参数值指的是RSRP值、RSRQ值及SINR值中的至少一个。
本公开实施例中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
关于频点优先级参数信息具体可为RFSP(无线接入技术RAT和/或频点选择优先级frequency selection priority)信息，但并不以此为限。
本公开实施例中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
具体的，所述接收第一网络节点发送的第一预设信息，包括：(通过所述终端的接入层)接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，(利用所述终端的接入层)通过专用信令，接收第一网络节点发送的第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集 合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
进一步的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
具体的，所述根据参考信息，确定目标重选小区，包括：根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
本公开实施例中，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
本公开实施例还提供了一种小区重选方法，应用于第一网络节点，如图2所示，包括：
步骤21：向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
其中，所述标识信息可以为S-NSSAI标识信息，但并不以此为限。
本公开实施例提供的所述小区重选方法通过向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减 少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
具体的，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
关于频点优先级参数信息具体可为RFSP(无线接入技术RAT和/或频点选择优先级frequency selection priority)信息，但并不以此为限。
本公开实施例中，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
具体的，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面 CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
具体的，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
本公开实施例中，所述向终端发送第一预设信息，包括：通过小区系统消息广播第一预设信息；或者，通过专用信令，向终端发送第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
本公开实施例还提供了一种小区重选方法，应用于第二网络节点，如图3所示，包括：
步骤31：通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
本公开实施例提供的所述小区重选方法通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息；实现支撑第一网络节点向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题； 同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
进一步的，所述的小区重选方法，还包括：通过非接入层协议向所述终端的非接入层配置第二预设信息；其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
关于预设切片标识信息的数量可以是一个或者至少两个，此外，预设切片标识信息可以是Allowed NSSAI信息、Default NSSAI信息或者Configured NSSAI信息(集合)中的信息。
本公开实施例中，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
进一步的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；
其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
下面结合终端、第一网络节点和第二网络节点等多侧对本公开实施例提供的所述小区重选方法进行举例说明。
针对上述技术问题，本公开实施例提供了一种小区重选方法，以实现通过让终端提前获取频点所支持切片类型的标识信息来辅助终端保持服务连续性及实现业务延迟优化；本方案具体可涉及：
终端侧接入层(AS层)行为：
1)终端接入层通过小区系统消息或者专用信令获取第一网络节点发送的第一预设信息；并利用第一预设信息和/或第二预设信息选择合适的目标重选小区。
其中，所述第一预设信息包含如下信息中的至少一项：
终端接入层通过专用信令获取的第一网络节点根据预设信息生成的频点集合以及该频点集合中各个频点所支持切片类型的标识信息；
终端接入层通过小区系统消息获取的第一网络节点广播提供的频点集合以及该频点集合中各个频点所支持切片类型的标识信息。
第一预设信息还可以包含第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
关于第二预设信息可以是终端的接入层从终端的非接入层获取的小区选择或重选相关的第二预设信息；
上述第二预设信息包含如下信息中的至少一项：
一个或者多个预设切片类型的标识信息(即上述预设切片类型标识信息)；或者
一个或者多个预设切片类型的标识信息和每一个预设切片类型的标识信息对应的类型优先级信息；或者
一个或者多个预设切片类型的标识信息和预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息(即包含上述有效性辅助信息)；或者
一个或者多个预设切片类型的标识信息、每一个预设切片类型的标识信息对应的类型优先级信息以及预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息。
2)1)中所述的预设信息包括以下信息中的至少一项：
第一网络节点存储的终端上下文信息中的Allowed NSSAI信息；
第一网络节点存储的终端上下文信息中的Default NSSAI信息；
第一网络节点存储的终端上下文信息中的Configured NSSAI信息；
第一网络节点存储的终端上下文信息中的频点优先级参数RFSP信息；
第一网络节点本地维护的频点集合信息，包括同频频点集合信息和异频频点集合信息；
第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息；
3)在1)中所述的获取第一预设信息之前，还包括第一网络节点通过接口协议从第二网络节点获取终端的Default NSSAI或者Configured NSSAI信息；
4)3)中所述的接口可能是X2、Xn、S1、NG、F1和E1接口中的任意一种，第二网络节点可以是DU、和第一网络节点功能相同的第二接入网实体、CU-CP、AMF、CU-UP、UDM和SMF中的任意一种；
5)1)中所述的频点集合既可以是第一网络节点配置给终端的专用频点集合，也可以是当前第一网络节点系统信息广播的公共频点集合(即所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点)；
6)1)中所述的专用信令承载的信息包含如下信息中的至少一项：
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类型的标识信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效定时器时长配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效定时器时长配置信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效区域配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类 型的标识信息的有效区域配置信息；
7)在1)中所述的利用第一预设信息和/或第二预设信息选择合适的目标重选小区之前，还包括利用第一预设信息和/或第二预设信息确定通过小区系统信息或者专用信令获取的各频点的频点优先级与当前服务频点的优先等级之间的高低，确定规则如下：
场景1：如果第二预设信息中包括预设切片类型标识信息对应的类型优先级信息，则各频点的频点优先级与当前服务频点的优先等级之间的高低的确定规则可如下：
首先说明，如果终端获取的第一网络节点根据预设信息生成的频点所支持的切片类型的标识信息中的某一类型信息包含在终端的接入层从终端的非接入层获取的小区选择或重选相关的第二预设信息中，则该切片类型使用与第二预设信息中相同切片类型一样的优先级，而忽略网络侧通过小区系统信息或者专用信令为该切片类型关联频点配置的频点优先级信息；如果终端获取的第一网络节点根据预设信息生成的某一频点所支持的切片类型的标识信息不能从终端非接入层获取的小区选择或重选相关的第二预设信息中找到对应的类型信息，则该频点优先级设置为最低(低于第二预设信息中所有类型信息对应的切片类型的优先等级)。
如果一个频点(属于上述频点集合)支持的切片类型的标识信息中，至少有一个类型信息对应的切片类型的类型优先级(即在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级)高于当前服务小区频点最高优先级切片对应的优先级(即高于当前服务小区频点支持的全部切片类型对应的最高类型优先级)，则该频点的优先级高于当前小区频点的优先级；或者，
如果一个频点支持的切片信息中最高优先级切片对应的优先级(即所述频点支持的全部切片类型对应的最高类型优先等级)与当前服务小区频点最高优先级切片对应的优先级(即当前服务小区频点支持的全部切片对应的最高类型优先级)相同，则比较二者次高优先级切片对应的优先级(即，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低)，次高优先级切片对应 的优先级中谁优先级高则谁的频点优先级高(即所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级)，如果二者次高优先级切片对应的优先级仍然相同，则可以认为二者频点优先级相同或者继续比较第三高优先级切片对应的优先级，第三高优先级切片对应的优先级谁优先级高则谁的频点优先级高，如果第三高优先级切片对应的优先级仍然相同，则可以继续比较第四高优先级切片对应的优先级，以此类推，直到比较出二者频点优先级高低或者宣布二者频点优先级相同；或者，
如果一个频点支持的切片信息是当前服务小区频点支持的切片信息的子集(即所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息)，则该频点的优先级低于或者等于当前服务频点的优先级；或者，
如果一个频点支持的切片信息包含当前服务频点支持的全部切片信息(当前服务频点支持的切片信息是该频点支持的切片信息的子集，所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息)，则该频点的优先级高于或者等于当前服务频点的优先级；或者，
如果一个频点支持的切片信息中最高优先级切片对应的优先级比当前服务小区频点最低优先级切片对应的优先级低(即所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级)，则该频点的优先级低于当前服务频点的优先级。
如果存在多个频点均是最低频点优先级，这些最低优先级频点之间的优先级可以通过如下规则确定：
通过网络侧为该频点配置的(专用)频点优先级信息确定该最低优先级频点在所有最低优先级频点之间的优先级；或者，
根据这些最低优先级频点上支持的切片类型个数确定所有最低优先级频点之间的优先级，一个最低优先级频点上支持的切片类型个数越多，该频点 的优先级越高；
场景2：如果第二预设信息中不包括预设切片类型标识信息对应的类型优先级信息，则各频点的频点优先级与当前服务频点的优先等级之间的高低的确定规则可以如下：
如果一个频点支持的切片信息是当前服务小区频点支持的切片信息的子集(即所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息)，则该频点的优先级低于或者等于当前服务频点的优先级；或者，
如果一个频点支持的切片信息包含当前服务频点支持的全部切片信息(当前服务频点支持的切片信息是该频点支持的切片信息的子集，所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息)，则该频点的优先级高于或者等于当前服务频点的优先级；或者，
将上述频点集合中的频点支持的全部切片类型的标识信息与第二预设信息中提供的预设切片类型标识信息取交集后得到的集合称为第一交集；将当前服务小区关联频点(即当前服务频点)支持的全部切片类型的标识信息与第二预设信息中提供的预设切片类型标识信息取交集后得到的集合称为第二交集；如果上述第一交集包含的切片类型个数大于第一切片类型集合包含的切片类型个数，则该频点优先级高于服务小区频点；
如果上述第一交集包含的元素个数等于第二交集包含的元素个数，则该频点的优先级等于当前服务频点的优先级；
如果上述第一交集包含的元素型个数小于第二交集包含的元素个数，则该频点的优先级低于当前服务频点的优先级；
在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
8)如7)所述，利用第一预设信息和/或第二预设信息确定通过小区系统信息或者专用信令获取的各频点的频点优先级信息与当前服务频点的优先等 级之间的高低后，可以通过如下规则完成目标重选小区选择及执行流程：
对于比当前服务频点优先级高的频点(即上述第一类型频点)，终端可以总是进行测量，一旦终端测得高优先级频点对应小区的信号质量参数值大于等于第二阈值则终端重选到该频点对应的小区上；
对于频点优先级与当前服务频点优先级相同的频点(即上述第一类型频点的一种)，终端可以在当前服务频点对应小区的信号质量参数值低于第一阈值时开启测量，测量结果满足重选准则后终端重选到该所测频点对应的小区上；
对于频点优先级比当前服务频点优先级低的频点(即上述第一类型频点的另一种)，终端可以在当前服务频点对应小区的信号质量参数值低于第一阈值时开启测量，测量结果满足当前服务频点对应小区的信号质量参数值低于第四阈值同时低优先级频点对应小区的信号质量参数值高于第三阈值时，终端重选到该所测频点对应的小区上。
进一步的，上述测量过程中，如果得到的目标重选小区的数量为至少两个，则终端可以通过如下规则确定最终目标重选小区：
第一阶段规则：第一小区关联的频点所支持的全部切片类型的标识信息中至少有一个包含在第二预设信息中，则该第一小区优于那些关联的频点所支持的全部切片类型的标识信息均不包含在第二预设信息中的第二小区，终端会优先选择重选到第一小区，具体比如：将唯一的第一小区作为最终目标重选小区；
第二阶段规则：如果上述第一阶段规则筛选后仍然存在多个候选目标重选小区(即第一小区的数量为至少两个)，则可以根据各个第一小区关联的频点所支持的全部切片类型的个数决定最终目标重选小区，小区关联的频点所支持的切片类型个数越多性能越优，终端会优先选择相关联的频点所支持的切片类型个数较多的候选目标重选小区作为最终目标重选小区；比如优先选择相关联的频点所支持的切片类型个数最多的、唯一的候选目标重选小区作为最终目标重选小区；
第三阶段规则：如果上述第一和第二阶段规则筛选后仍然存在多个候选目标重选小区，则终端可以选择小区可测波束(即小区所对应的波束中波束 信号质量大于或等于第六阈值的波束)个数多的候选目标重选小区作为最终目标重选小区；
具体比如：获取多个候选目标重选小区分别对应的可测波束的个数，将数值最大的个数所对应的候选目标重选小区，作为最终目标重选小区。
第四阶段规则：如果上述第一、第二和第三阶段规则筛选后仍然存在多个候选目标重选小区，则终端可以选择小区信号质量最好(即小区信号质量参数值最高)的候选目标重选小区作为最终目标重选小区。
终端侧非接入层(NAS层)行为：
1)向终端接入层发送第二预设信息，所述第二预设信息包含如下信息中的至少一项：
一个或者多个预设切片类型的标识信息(即上述预设切片类型标识信息)；或者
一个或者多个预设切片类型的标识信息和每一个预设切片类型的标识信息对应的类型优先级信息；或者
一个或者多个预设切片类型的标识信息和预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息(即包含上述有效性辅助信息)；或者
一个或者多个预设切片类型的标识信息、每一个预设切片类型的标识信息对应的类型优先级信息以及预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息。
2)1)中所述的第二预设信息可以是系统预配置给终端非接入层的，也可能是终端非接入层通过非接入层消息从第二网络节点侧获取的；
第一网络节点行为：
1)第一网络节点向终端发送第一预设信息；
其中，所述第一预设信息包含如下信息中的至少一项：
终端接入层通过专用信令获取的第一网络节点根据预设信息生成的频点集合以及该频点集合中各个频点所支持切片类型的标识信息；
终端接入层通过小区系统消息获取的第一网络节点广播提供的频点集合以及该频点集合中各个频点所支持切片类型的标识信息。
第一预设信息还可以包含第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
2)中所述的预设信息以下信息中的至少一项：
第一网络节点存储的终端上下文信息中的Allowed NSSAI信息；
第一网络节点存储的终端上下文信息中的Default NSSAI信息；
第一网络节点存储的终端上下文信息中的Configured NSSAI信息；
第一网络节点存储的终端上下文信息中的频点优先级参数RFSP信息；
第一网络节点本地维护的频点集合信息，包括同频频点集合信息和异频频点集合信息；
第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息；
3)1)中所述的在向终端发送第一预设信息之前，还包括第一网络节点通过接口协议从第二网络节点获取终端的Default NSSAI或者Configured NSSAI信息；
4)3)中所述的接口可能是X2、Xn、S1、NG、F1以及E1接口中的任意一种，第二网络节点可以是DU、和第一网络节点功能相同的第二接入网实体、CU-CP、AMF、CU-UP、UDM和SMF中的任意一种；
5)1)中所述的频点集合既可以是第一网络节点配置给终端的专用频点集合，也可以是当前第一网络节点系统信息广播的公共频点集合(即所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点)；
6)1)中所述的专用信令承载的信息包含如下信息中的至少一项：
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类型的标识信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效定时器时长配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类 型的标识信息的有效定时器时长配置信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效区域配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持的切片类型的标识信息的有效区域配置信息。
第二网络节点行为：
1)第二网络节点通过接口协议向第一网络节点发送终端的Default NSSAI或者Configured NSSAI信息；
2)1)中所述的接口可能是X2、Xn、S1、NG、F1以及E1接口中的任意一种，第二网络节点可以是DU、和第一网络节点功能相同的第二接入网实体、CU-CP、AMF、CU-UP、UDM和SMF中的任意一种；
3)通过非接入层协议将小区选择或重选相关的第二预设信息配置给终端非接入层，此时第二网络节点可以是AMF、UDM和SMF中的任意一种；
上述第二预设信息包含如下信息中的至少一项：
一个或者多个预设切片类型的标识信息(即上述预设切片类型标识信息)；或者
一个或者多个预设切片类型的标识信息和每一个预设切片类型的标识信息对应的类型优先级信息；或者
一个或者多个预设切片类型的标识信息和预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息(即包含上述有效性辅助信息)；或者
一个或者多个预设切片类型的标识信息、每一个预设切片类型的标识信息对应的类型优先级信息以及预设切片类型的标识信息对应的PLMN信息或者跟踪区域(TA)信息或者频带(Band)信息。
下面对本公开实施例提供的方案进行举例说明。
举例一：第一网络节点生成频点集合以及该频点集合中各个频点所支持切片类型的标识信息的方式举例
方式1：本小区使用从邻区和/或核心网侧获取的公共频点集合以及该频 点集合中各个频点所支持切片类型的标识信息，生成本小区的公共频点集合以及该频点集合中各个频点所支持切片类型的标识信息；也就是使用第一网络节点本地维护的频点集合信息以及该频点集合中各个频点所支持的切片类型的标识信息；
方式2：通过终端Default NSSAI或者Configured NSSAI或者Allowed NSSAI或者频点优先级参数RFSP中的至少一个参数，辅助方式1获取的本小区的频点集合以及该频点集合中各个频点所支持切片类型的标识信息，生成终端专用的频点集合以及该频点集合中各个频点所支持切片类型的标识信息。
表1 方式1生成的频点集合信息以及该频点集合中各个频点所支持的切片类型的标识信息格式示意
Figure PCTCN2021106000-appb-000001
表2 终端的Default NSSAI或者Configured NSSAI或者Allowed NSSAI信息格式示意
Figure PCTCN2021106000-appb-000002
通过终端Default NSSAI或者Configured NSSAI或者Allowed NSSAI或者频点优先级参数RFSP中的至少一个参数，辅助方式1获取的本小区的频点集合以及该频点集合中各个频点所支持切片类型的标识信息，生成终端专用的频点集合以及该频点集合中各个频点所支持切片类型的标识信息：
表3 方式2生成的终端专用的频点集合以及该频点集合中各个频点支持的切片类型的标识信息格式示意
Figure PCTCN2021106000-appb-000003
表3相比于表1，附加考虑了终端Default NSSAI或者Configured NSSAI或者Allowed NSSAI或者频点优先级参数RFSP中的至少一个参数，辅助更新方式1生成的频点集合以及该频点集合中各个频点支持的切片类型的标识信息。
举例二：终端获取网络侧提供的频点集合以及该频点集合中各个频点支持的切片类型的标识信息的方式
方式1：第一网络节点通过广播本小区系统消息将举例一中通过方式1获取的公共频点集合以及该频点集合中各个频点支持的切片类型的标识信息告知终端，如图4所示，包括：
步骤41：第一网络节点通过小区系统消息向终端发送公共频点集合以及该频点集合中各个频点支持的切片类型的标识信息。
图4中的小区系统信息只提供本小区维护的公共频点集合以及该频点集合中各个频点支持的切片类型的标识信息。
方式2：第一网络节点通过专用信令向终端发送专用频点集合以及该频点集合中各个频点所支持切片类型的标识信息，如图5所示，包括：
步骤51：第一网络节点通过专用信令向终端发送专用频点集合以及该频点集合中各个频点支持的切片类型的标识信息；
该步骤中所述的专用信令承载的信息包含如下信息中的至少一项：
配置给终端的专用频点集合以及该频点集合中各个频点所支持切片类型的标识信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持切片类型的标识信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
配置给终端的专用频点集合以及该频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
配置给终端的公共频点集合以及该频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
步骤52：终端回复给第一网络节点(即终端向第一网络节点回复)配置成功信息，该过程可能不出现。
举例三：第二预设信息格式示意
表4 终端的接入层从终端的非接入层获取的小区选择或重选相关的第二预设信息的格式示意(预设切片类型标识信息体现为预设切片类型标识)
Figure PCTCN2021106000-appb-000004
第二预设信息为可选项，也就是说终端的非接入层可以不向该接入层提供该信息；另外第二预设信息中的预设切片类型标识优先级信息(即上述预设切片类型标识信息对应的类型优先级信息)也是可选项，也就是说终端的非接入层可以向终端接入层只提供预设切片类型标识信息而不提供该预设切片类型标识对应的优先级信息。
表1、表2、表3和/或表4中的M、N、O、P、Q、W、X、Y和/或Z分别是大于等于1的正整数。
举例四：第二预设信息只包含预设切片类型标识(即上述预设切片类型标识信息)时网络发送的频点集合中各频点与当前服务频点优先级之间高低的确定规则举例
首先定义：第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集
假设第二预设信息包括的预设切片类型标识信息为：切片类型1和切片类型2；
终端从网络侧获得的频点集合包括3个频点：f1、f2和f3。
情景1：当前服务频点为f1，且f1、f2和f3切片类型支持情况如下：
f1：切片类型1；
f2：切片类型1和切片类型2；
f3：未提供切片类型；
f1对应的第二交集元素个数为1，f2对应的第一交集元素个数为2，f3对 应的第一交集元素个数为0，频点优先级制定规则如下：
在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；
则f1、f2和f3之间频点优先级为：f2>f1>f3。
情景2：当前服务频点为f1，且f1、f2和f3切片类型支持情况如下：
f1：切片类型3；
f2：切片类型3和切片类型4；
f3：未提供切片类型；
f1对应的第二交集元素个数为0，f2对应的第一交集元素个数为0，f3对应的第一交集元素个数为0，则此时根据如下规定确定各频点优先级：
规定1：根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；
规定1中的频点的优先等级信息是网络侧通过小区系统信息或者专用信令提供，f1、f2、f3之间频点优先级根据小区系统信息或者专用信令(提供的频点优先级信息)确定；
或者
规定2：根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
按照规定2规则，f1、f2和f3之间频点优先级为：f2>f1>f3；f3未提供切片类型视作支持0个切片类型。
情景3：服务频点不包含在网络侧提供的频点集合中，则服务频点优先级最低(低于所述频点集合中的任一频点的频点优先级)。
举例五：第二预设信息同时包含预设切片类型标识(即上述预设切片类 型标识信息)以及预设切片类型标识对应优先级信息(即上述预设切片类型标识信息对应的类型优先级信息)时，频点集合中各频点与当前服务频点优先级之间高低的确定规则举例
表5 终端的接入层从终端的非接入层获取的小区选择或重选相关的第二预设信息举例
Figure PCTCN2021106000-appb-000005
表5中假设类型优先级0优先级最高，类型优先级1其次，以此类推；
首先按照如下规则确定一个频点支持的每个切片类型优先级：
在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
其中，所述第一切片类型为所述频点所支持的任一个切片类型。
假设终端从网络侧获得的频点集合包括3个频点：f1、f2和f3。
情景1：当前服务频点为f1，且f1、f2和f3切片类型支持情况如下：
f1：切片类型1和切片类型3；
f2：切片类型1和切片类型2；
f3：切片类型1和切片类型4；
则：
f1切片类型优先级分别为：0和2；
f2切片类型优先级分别为：0和1；
f3切片类型优先级分别为：0和低于优先级2；
接着按照如下规则确定频点优先级：
首先比较最高优先级，如果谁高，谁对应频点优先级高；如果最高频点 优先级相同，则看次高切片类型优先级，依次类推；
按照这样的规则可以判断f1、f2和f3之间频点优先级为：f2>f1>f3；
当然也可能最高切片类型优先级相同时，不比较次高切片类型优先级高低，而是按照如下方式决定频点高低：
规定1：根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；
规定1中的频点的优先等级信息是网络侧通过小区系统信息或者专用信令提供，f1、f2、f3之间频点优先级根据系统信息或者专用信令确定；
或者
规定2：根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
按照规定2规则，f1、f2和f3之间频点优先级相同。
情景2：当前服务频点为f1，且f1、f2和f3切片类型支持情况如下：
f1：切片类型4和切片类型5；
f2：切片类型4和切片类型6；
f3：切片类型4、切片类型5和切片类型6；
则：
f1切片类型优先级分别为：全部低于优先级2；
f2切片类型优先级分别为：全部低于优先级2；
f3切片类型优先级分别为：全部低于优先级2；
上述场景按照如下规则确定频点优先级：
方式1：直接宣布f1、f2和f3之间频点优先级相同；
方式2：根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；
方式2中的频点的优先等级信息是网络侧通过小区系统信息或者专用信令提供，f1、f2、f3之间频点优先级根据小区系统信息或者专用信令确定；
方式3：根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等 级之间的高低。
按照规定3规则，f1、f2和f3之间频点优先级为f3>f1＝f2。
情景3：服务频点不包含在网络侧提供的频点集合中，则服务频点优先级最低(低于所述频点集合中的任一频点的频点优先级)。
举例六：当(候选)目标重选小区的数量大于或等于2个时，终端选择最终目标重选小区的方法举例
规定：获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
情景1：2个目标重选小区中的一个小区对应第一类型频点，一个小区对应第二类型频点，则终端选择第一类型频点小区；
情景2：2个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
情景3：2个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
上述第二预设规则包括以下规则中的至少一个：
获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；
获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；
其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
由上可知，相比相关技术按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的特性，本公开实施例提供的方案可以保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，同时减少了终端由于切片业务中断造成的二次小区重选过程。
本公开实施例还提供了一种终端，如图6所示，包括存储器61、处理器62、收发机63及存储在所述存储器61上并可在所述处理器62上运行的计算机程序64；所述处理器62执行所述程序时实现以下步骤：
通过所述收发机63接收第一网络节点发送的第一预设信息；
根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
本公开实施例提供的所述终端通过接收第一网络节点发送的第一预设信息；根据参考信息，确定目标重选小区；其中，所述参考信息包括所述第一预设信息和/或第二预设信息；所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息；能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中 小区重选方案存在服务连续性差、业务延迟严重的问题。
具体的，所述处理器具体用于：根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
其中，所述满足重选准则包括以下情况中的至少一个：在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
本公开实施例中，所述处理器具体用于：根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；根据确定结果，获取所述第一类型频点。
具体的，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
本公开实施例中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
其中，所述处理器具体用于：在所述频点支持的全部切片类型的标识信 息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
本公开实施例中，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
具体的，所述处理器具体用于：在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
本公开实施例中，所述处理器具体用于：在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情 况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
其中，所述处理器具体用于：在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；其中，所述第一切片类型为所述频点所支持的任一个切片类型。
具体的，所述处理器具体用于：在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据 所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
本公开实施例中，所述处理器具体用于：在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
进一步的，所述处理器还用于：在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；其中，所述第一预设规则包括以下规则中的至少一个：在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中存在 所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
其中，所述第二预设规则包括以下规则中的至少一个：获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
本公开实施例中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
其中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专 用频点，或者所述第一网络节点的系统信息广播的公共频点。
具体的，所述处理器具体用于：利用所述收发机接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，利用所述收发机，通过专用信令，接收第一网络节点发送的第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
进一步的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
具体的，所述处理器具体用于：根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
本公开实施例中，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
其中，上述终端侧的小区重选方法的所述实现实施例均适用于该终端的实施例中，也能达到对应相同的技术效果。
本公开实施例还提供了一种网络节点，所述网络节点为第一网络节点，如图7所示，包括存储器71、处理器72、收发机73及存储在所述存储器71上并可在所述处理器72上运行的计算机程序74；所述处理器72执行所述程序时实现以下步骤：
通过所述收发机73向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
本公开实施例提供的所述网络节点通过向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
进一步的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
本公开实施例中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
其中，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
本公开实施例中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接 口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
其中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
具体的，所述处理器具体用于：利用所述收发机，通过小区系统消息广播第一预设信息；或者，利用所述收发机，通过专用信令，向终端发送第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
其中，上述第一网络节点侧的小区重选方法的所述实现实施例均适用于该网络节点的实施例中，也能达到对应相同的技术效果。
本公开实施例还提供了一种网络节点，所述网络节点为第二网络节点，如图8所示，包括存储器81、处理器82、收发机83及存储在所述存储器81上并可在所述处理器82上运行的计算机程序84；所述处理器82执行所述程序时实现以下步骤：
利用所述收发机83，通过接口协议向第一网络节点发送终端的默认的切 片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
本公开实施例提供的所述网络节点通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息；实现支撑第一网络节点向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
进一步的，所述处理器还用于：通过非接入层协议向所述终端的非接入层配置第二预设信息；其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
其中，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
本公开实施例中，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
其中，上述第二网络节点侧的小区重选方法的所述实现实施例均适用于该网络节点的实施例中，也能达到对应相同的技术效果。
本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述终端侧、第一网络节点侧或第二网络节点侧的小区重选方法的步骤。
其中，上述终端侧、第一网络节点侧或第二网络节点侧的小区重选方法的所述实现实施例均适用于该计算机可读存储介质的实施例中，也能达到对应相同的技术效果。
本公开实施例还提供了一种小区重选装置，应用于终端，如图9所示，包括：
第一接收模块91，用于接收第一网络节点发送的第一预设信息；
第一确定模块92，用于根据参考信息，确定目标重选小区；
其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
本公开实施例提供的所述小区重选装置通过接收第一网络节点发送的第一预设信息；根据参考信息，确定目标重选小区；其中，所述参考信息包括所述第一预设信息和/或第二预设信息；所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息；能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求， 终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述第一确定模块，包括：第一处理子模块，用于根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；第二处理子模块，用于对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；第三处理子模块，用于对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
本公开实施例中，所述满足重选准则包括以下情况中的至少一个：在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
具体的，所述第一处理子模块，包括：第一确定单元，用于根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；第一获取单元，用于根据确定结果，获取所述第一类型频点。
本公开实施例中，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者， 所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
进一步的，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
其中，所述第一确定单元，包括：第一确定子单元，用于在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
本公开实施例中，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
具体的，所述根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低，包括：在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在所述第一交集的元素个数等于所述第二交集的元素个数，且所述 元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
本公开实施例中，所述第一确定单元，包括：第三确定子单元，用于在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，第四确定子单元，用于在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，第一处理子单元，用于根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；第二确定子单元，用于根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
具体的，所述根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级，包括：在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；其中，所述第一切片类型为所述频点所支持的任一个切片类型。
本公开实施例中，所述根据所述类型优先等级，确定所述频点集合中各 个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
具体的，所述根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低，包括：在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结 果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
进一步的，所述的小区重选装置，还包括：第一选取模块，用于在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；其中，所述第一预设规则包括以下规则中的至少一个：在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
其中，所述第二预设规则包括以下规则中的至少一个：获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区； 获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
本公开实施例中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
本公开实施例中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
具体的，所述第一接收模块，包括：第一接收子模块，用于接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，通过专用信令，接收第一网络节点发送的第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有 效区域配置信息。
进一步的，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
本公开实施例中，所述第一确定模块，包括：第一确定子模块，用于根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
本公开实施例中，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
其中，上述终端侧的小区重选方法的所述实现实施例均适用于该小区重选装置的实施例中，也能达到相同的技术效果。
本公开实施例还提供了一种小区重选装置，应用于第一网络节点，如图10所示，包括：
第一发送模块101，用于向终端发送第一预设信息；
其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
本公开实施例提供的所述小区重选装置通过向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
进一步的，所述第一预设信息还包括：所述第一网络节点配置的所述频 点集合中各个频点对应的频点优先级信息。
其中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；其中，所述预设信息包括以下信息中的至少一项：所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
本公开实施例中，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
本公开实施例中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
其中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
具体的，所述第一发送模块，包括：第一发送子模块，用于通过小区系统消息广播第一预设信息；或者，通过专用信令，向终端发送第一预设信息；其中，所述专用信令承载的信息包括以下信息中的至少一项：配置给所述终端 的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
其中，上述第一网络节点侧的小区重选方法的所述实现实施例均适用于该小区重选装置的实施例中，也能达到相同的技术效果。
本公开实施例还提供了一种小区重选装置，应用于第二网络节点，如图11所示，包括：
第二发送模块111，用于通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
本公开实施例提供的所述小区重选装置通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息；实现支撑第一网络节点向终端发送第一预设信息；其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；从而支撑终端能够通过提前获取频点所支持的切片类型的标识信息，实现保证终端选择的目标小区符合终端的业务需求，终端可以根据不同切片需求选择适合该业务的目标小区，保证了终端切片业务的连续性，避免了按照网络侧配置的频点优先级信息及小区信号强度来决定目标小区无法保证终端切片业务连续性的问题；同时减少了终端由于切片业务中断造成的二次小区重选过程，降低了业务延迟，很好的解决了相关技术中小区重选方案存在服务连续性差、业务延迟严重的问题。
其中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接 口、F1接口或者E1接口；其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
本公开实施例中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
进一步的，所述的小区重选装置，还包括：第一配置模块，用于通过非接入层协议向所述终端的非接入层配置第二预设信息；其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
本公开实施例中，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
本公开实施例中，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
其中，上述第二网络节点侧的小区重选方法的所述实现实施例均适用于该小区重选装置的实施例中，也能达到相同的技术效果。
需要说明的是，此说明书中所描述的许多功能部件都被称为模块/子模块/单元/子单元，以便更加特别地强调其实现方式的独立性。
本公开实施例中，模块/子模块/单元/子单元可以用软件实现，以便由各种类型的处理器执行。举例来说，一个标识的可执行代码模块可以包括计算机指令的一个或多个物理或者逻辑块，举例来说，其可以被构建为对象、过程或函数。尽管如此，所标识模块的可执行代码无需物理地位于一起，而是可以包括存储在不同位里上的不同的指令，当这些指令逻辑上结合在一起时， 其构成模块并且实现该模块的规定目的。
实际上，可执行代码模块可以是单条指令或者是许多条指令，并且甚至可以分布在多个不同的代码段上，分布在不同程序当中，以及跨越多个存储器设备分布。同样地，操作数据可以在模块内被识别，并且可以依照任何适当的形式实现并且被组织在任何适当类型的数据结构内。所述操作数据可以作为单个数据集被收集，或者可以分布在不同位置上(包括在不同存储设备上)，并且至少部分地可以仅作为电子信号存在于系统或网络上。
在模块可以利用软件实现时，考虑到相关技术中的硬件工艺的水平，所以可以以软件实现的模块，在不考虑成本的情况下，本领域技术人员都可以搭建对应的硬件电路来实现对应的功能，所述硬件电路包括常规的超大规模集成(VLSI)电路或者门阵列以及诸如逻辑芯片、晶体管之类的相关技术中的半导体或者是其它分立的元件。模块还可以用可编程硬件设备，诸如现场可编程门阵列、可编程阵列逻辑、可编程逻辑设备等实现。
需要说明的是，应理解以上各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，确定模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，各个模块、单元、子单元或子模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时， 该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
本公开的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开的实施例，例如除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B和/或C，表示包含单独A，单独B，单独C，以及A和B都存在，B和C都存在，A和C都存在，以及A、B和C都存在的7种情况。类似地，本说明书以及权利要求中使用“A和B中的至少一个”应理解为“单独A，单独B，或A和B都存在”。
以上所述的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人员来说，在不脱离本公开所述原理前提下，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 (57)

  1. 一种小区重选方法，应用于终端，包括：
    接收第一网络节点发送的第一预设信息；
    根据参考信息，确定目标重选小区；
    其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
    所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
    所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
  2. 根据权利要求1所述的小区重选方法，其中，所述根据参考信息，确定目标重选小区，包括：
    根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
    对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；
    对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
  3. 根据权利要求2所述的小区重选方法，其中，所述满足重选准则包括以下情况中的至少一个：
    在所述第一类型频点对应小区的信号质量参数值大于或等于第二阈值的情况下，确定所述第一类型频点满足重选准则；
    在所述第二类型频点对应小区的信号质量参数值大于或等于第三阈值，并且当前服务频点对应小区的信号质量参数值小于或等于第四阈值且维持时长达到第一时长的情况下，确定所述第二类型频点满足重选准则；或者，
    在所述第二类型频点对应小区的信号质量参数值与当前服务频点对应小区的信号质量参数值之间的差值达到第五阈值且维持时长达到第二时长的情况下，确定所述第二类型频点满足重选准则。
  4. 根据权利要求2所述的小区重选方法，其中，所述根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，包括：
    根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；
    根据确定结果，获取所述第一类型频点。
  5. 根据权利要求4所述的小区重选方法，其中，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，
    所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级低于所述频点集合中的任一频点的优先等级。
  6. 根据权利要求4所述的小区重选方法，其中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，
    所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
  7. 根据权利要求6所述的小区重选方法，其中，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
    在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的 全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；
    其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
  8. 根据权利要求7所述的小区重选方法，其中，在所述第一网络节点未配置所述频点支持的切片类型的情况下，所述第一交集的元素个数为0；和/或，
    在获取到所述当前服务频点支持的切片类型的个数为0，或者未获取到所述当前服务频点支持的切片类型的情况下，所述第二交集的元素个数为0；和/或，
    在未获取到所述第二预设信息或者获取到的所述第二预设信息为空的情况下，所述第一交集和第二交集的元素个数为0。
  9. 根据权利要求7所述的小区重选方法，其中，所述根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低，包括：
    在所述第一交集的元素个数大于所述第二交集的元素个数的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
    在所述第一交集的元素个数小于所述第二交集的元素个数的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
    在所述第一交集的元素个数等于所述第二交集的元素个数，且所述元素个数不为0的情况下，确定所述频点的优先等级等于所述当前服务频点的优先等级；
    在所述第一交集和第二交集的元素个数为0的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低。
  10. 根据权利要求6所述的小区重选方法，其中，所述根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
    在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
    根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级；
    根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
  11. 根据权利要求10所述的小区重选方法，其中，所述根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集合中各个频点所支持的各个切片类型的类型优先等级，包括：
    在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
    在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
    其中，所述第一切片类型为所述频点所支持的任一个切片类型。
  12. 根据权利要求10所述的小区重选方法，其中，所述根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低，包括：
    在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
  13. 根据权利要求12所述的小区重选方法，其中，所述根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低，包括：
    在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级高于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；
    在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级低于当前服务小区频点支持的全部切片类型对应的次高类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级；
    在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况 下，确定所述频点的优先等级等于所述当前服务频点的优先等级；或者，在比较结果指示所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级相同的情况下，执行至少一次预设操作，直至比较出所述频点对应的类型优先等级与当前服务小区频点对应的类型优先级之间的高低，或者确认所述频点的优先等级等于所述当前服务频点的优先等级；
    其中，所述预设操作包括比较所述频点支持的全部切片类型对应的类型优先级中排序在第n位的类型优先等级与所述当前服务频点支持的全部切片对应的类型优先级中排序在第n位的类型优先级之间的高低；n为大于2的整数。
  14. 根据权利要求6所述的小区重选方法，其中，在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，还包括：
    根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
    其中，所述第一预设规则包括以下规则中的至少一个：
    在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；
    在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
    在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
  15. 根据权利要求14所述的小区重选方法，其中，所述第二预设规则包括以下规则中的至少一个：
    获取预设频点中各个频点支持的全部切片类型的标识信息与所述预设切 片类型标识信息之间的交集元素个数，将数值最大的所述交集元素个数对应的频点所对应的所述目标重选小区作为最终目标重选小区；
    获取预设频点中各个频点支持的全部切片类型的总个数最多的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
    获取预设频点中在所述频点优先级信息中优先级最高的频点，将获取的频点所对应的所述目标重选小区作为最终目标重选小区；
    获取所述至少两个目标重选小区分别对应的波束信号质量参数值大于或等于第六阈值的波束的波束个数，将数值最大的所述波束个数对应的所述目标重选小区作为最终目标重选小区；
    获取小区信号质量参数值最高的所述目标重选小区作为最终目标重选小区；
    其中，所述预设频点是指所述至少两个目标重选小区分别对应的频点。
  16. 根据权利要求1所述的小区重选方法，其中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
    其中，所述预设信息包括以下信息中的至少一项：
    所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
    所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
    所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
  17. 根据权利要求1所述的小区重选方法，其中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的 系统信息广播的公共频点。
  18. 根据权利要求1所述的小区重选方法，其中，所述接收第一网络节点发送的第一预设信息，包括：
    接收第一网络节点通过小区系统消息广播的所述第一预设信息；或者，通过专用信令，接收第一网络节点发送的第一预设信息；
    其中，所述专用信令承载的信息包括以下信息中的至少一项：
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息。
  19. 根据权利要求1所述的小区重选方法，其中，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；在所述有效性辅助信息与当前服务频点的有效性辅助信息相匹配的情况下，所述预设切片类型标识信息处于有效状态；
    其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
  20. 根据权利要求1所述的小区重选方法，其中，所述根据参考信息，确定目标重选小区，包括：
    根据第一预设信息以及通过所述终端的非接入层向所述终端的接入层提供的第二预设信息，确定目标重选小区。
  21. 根据权利要求1或20所述的小区重选方法，其中，所述第二预设信 息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
  22. 一种小区重选方法，应用于第一网络节点，包括：
    向终端发送第一预设信息；
    其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
  23. 根据权利要求22所述的小区重选方法，其中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
  24. 根据权利要求22所述的小区重选方法，其中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
    其中，所述预设信息包括以下信息中的至少一项：
    所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
    所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
    所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
  25. 根据权利要求24所述的小区重选方法，其中，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
  26. 根据权利要求25所述的小区重选方法，其中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
    其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示 5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
  27. 根据权利要求25所述的小区重选方法，其中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
  28. 根据权利要求22所述的小区重选方法，其中，所述频点集合中的频点为所述第一网络节点配置给所述终端的专用频点，或者所述第一网络节点的系统信息广播的公共频点。
  29. 根据权利要求22所述的小区重选方法，其中，所述向终端发送第一预设信息，包括：
    通过小区系统消息广播第一预设信息；或者，
    通过专用信令，向终端发送第一预设信息；
    其中，所述专用信令承载的信息包括以下信息中的至少一项：
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息；
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支持切片类型的标识信息的有效定时器时长配置信息；
    配置给所述终端的专用频点集合以及所述专用频点集合中各个频点所支持切片类型的标识信息的有效区域配置信息；
    配置给所述终端的公共频点集合以及所述公共频点集合中各个频点所支 持切片类型的标识信息的有效区域配置信息。
  30. 一种小区重选方法，应用于第二网络节点，包括：
    通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
  31. 根据权利要求30所述的小区重选方法，其中，所述接口协议的接口类型是X2接口、Xn接口、S1接口、NG接口、F1接口或者E1接口；
    其中，X2接口表示4G无线接入网节点之间的通信接口；Xn接口表示5G无线接入网节点之间的通信接口；S1接口表示4G无线接入网节点与4G核心网之间的通信接口；NG接口表示5G无线接入网节点与5G核心网之间的通信接口；F1接口表示使用新空口技术的无线接入网节点之中的集中单元gNB-CU与分布单元gNB-DU之间的通信接口；E1接口表示gNB-CU之中的控制平面gNB-CU-CP部分与gNB-CU之中的用户平面gNB-CU-UP部分之间的通信接口。
  32. 根据权利要求30所述的小区重选方法，其中，所述第二网络节点为分布单元DU、无线接入网RAN节点、集中单元控制面CU-CP、接入和移动管理功能AMF、集中单元用户面CU-UP、统一数据管理平台UDM或者会话管理功能SMF。
  33. 根据权利要求30所述的小区重选方法，还包括：
    通过非接入层协议向所述终端的非接入层配置第二预设信息；
    其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；
    所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
  34. 根据权利要求33所述的小区重选方法，其中，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
  35. 根据权利要求33所述的小区重选方法，其中，所述第二预设信息还包括：所述预设切片类型标识信息对应的有效性辅助信息；
    其中，所述有效性辅助信息包括：公共陆地移动网PLMN信息、跟踪区域TA信息和/或频带信息。
  36. 一种终端，包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
    通过所述收发机接收第一网络节点发送的第一预设信息；
    根据参考信息，确定目标重选小区；
    其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
    所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
    所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
  37. 根据权利要求36所述的终端，其中，所述处理器具体用于：
    根据所述参考信息，获取所述频点集合中优先等级高于当前服务频点的优先等级的频点作为第一类型频点，并将所述频点集合中除所述第一类型频点外剩余的频点作为第二类型频点；
    对于所述第一类型频点，按照预设周期进行测量，且在所述第一类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第一类型频点对应的小区作为目标重选小区；
    对于所述第二类型频点，在当前服务频点对应小区的信号质量参数值低于第一阈值的情况下，启动对所述第二类型频点的测量，且在所述第二类型频点对应小区的信号质量参数值满足重选准则的情况下，将所述第二类型频点对应的小区作为目标重选小区。
  38. 根据权利要求37所述的终端，其中，所述处理器具体用于：
    根据所述参考信息，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低；
    根据确定结果，获取所述第一类型频点。
  39. 根据权利要求38所述的终端，其中，所述频点集合中存在与所述当前服务频点相同的频点，且所述当前服务频点的优先等级与所述相同的频点的优先等级一致；或者，
    所述频点集合中不存在与所述当前服务频点相同的频点，且所述当前服 务频点的优先等级低于所述频点集合中的任一频点的优先等级。
  40. 根据权利要求38所述的终端，其中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息；和/或，
    所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
  41. 根据权利要求40所述的终端，其中，所述处理器具体用于：
    在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息与所述当前服务频点支持的全部切片类型的标识信息之间存在部分交集或无交集的情况下，根据第一交集以及第二交集，确定所述频点的优先等级与所述当前服务频点的优先等级之间的高低；
    其中，所述第一交集为所述频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集，所述第二交集为所述当前服务频点支持的全部切片类型的标识信息与所述预设切片类型标识信息之间的交集。
  42. 根据权利要求40所述的终端，其中，所述处理器具体用于：
    在所述频点支持的全部切片类型的标识信息包含于所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级低于或等于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型的标识信息包含所述当前服务频点支持的全部切片类型的标识信息的情况下，确定所述频点的优先等级高于或等于所述当前服务频点的优先等级；或者，
    根据所述预设切片类型标识信息、所述类型优先级信息、所述频点集合以及所述频点集合中各个频点所支持切片类型的标识信息，得到所述频点集 合中各个频点所支持的各个切片类型的类型优先等级；
    根据所述类型优先等级，确定所述频点集合中各个频点对应的优先等级与当前服务频点的优先等级之间的高低。
  43. 根据权利要求42所述的终端，其中，所述处理器具体用于：
    在第一切片类型的标识信息与所述预设切片类型标识信息中的第二标识信息相同的情况下，确定所述第一切片类型的类型优先等级与所述第二标识信息对应的类型优先级相同，根据所述第二标识信息和类型优先级信息，得到所述第一切片类型的类型优先等级；或者，
    在所述第一切片类型的标识信息不属于所述预设切片类型标识信息的情况下，确定所述第一切片类型的类型优先等级为低于所述预设切片类型标识信息对应的各个切片类型的类型优先级的预设优先级；
    其中，所述第一切片类型为所述频点所支持的任一个切片类型。
  44. 根据权利要求42所述的终端，其中，所述处理器具体用于：
    在所述频点支持的全部切片类型中存在至少一个切片类型的类型优先等级高于当前服务小区频点支持的全部切片类型对应的最高类型优先级的情况下，确定所述频点的优先等级高于所述当前服务频点的优先等级；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，比较所述频点支持的全部切片类型对应的次高类型优先等级与当前服务小区频点支持的全部切片类型对应的次高类型优先级之间的高低，根据比较结果确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点优先级信息，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级与当前服务小区频点支持的全部切片对应的最高类型优先级相同的情况下，根据所述频点支持的全部切片类型的个数与当前服务频点支持的全部切片类型的个数，确定所述频点的优先等级与当前服务频点的优先等级之间的高低；或者，
    在所述频点支持的全部切片类型对应的最高类型优先等级低于当前服务小区频点支持的全部切片类型对应的最低类型优先级的情况下，确定所述频点的优先等级低于所述当前服务频点的优先等级。
  45. 根据权利要求40所述的终端，其中，所述处理器还用于：
    在所述目标重选小区的数量为至少两个的情况下，在根据参考信息，确定目标重选小区之后，根据第一预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区；
    其中，所述第一预设规则包括以下规则中的至少一个：
    在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点包含的小区数量为1的情况下，将所述第一类型频点包含的唯一小区作为最终目标重选小区；
    在所述至少两个目标重选小区对应的频点中存在所述第一类型频点和第二类型频点，且所述第一类型频点的数量为至少一个，所述至少一个第一类型频点包含的小区总数量为至少两个的情况下，根据第二预设规则，从所述至少一个第一类型频点包含的小区中选取一个小区作为最终目标重选小区；
    在所述至少两个目标重选小区对应的频点中仅存在第一类型频点或第二类型频点的情况下，根据第二预设规则，从所述至少两个目标重选小区中选取一个目标重选小区作为最终目标重选小区。
  46. 根据权利要求36所述的终端，其中，所述第二预设信息为在所述非接入层预配置给所述终端的，或者网络节点通过非接入层协议配置给所述非接入层的。
  47. 一种网络节点，所述网络节点为第一网络节点，包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
    通过所述收发机向终端发送第一预设信息；
    其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
  48. 根据权利要求47所述的网络节点，其中，所述第一预设信息还包括：所述第一网络节点配置的所述频点集合中各个频点对应的频点优先级信息。
  49. 根据权利要求47所述的网络节点，其中，所述频点集合和所述频点集合中各个频点所支持切片类型的标识信息是所述第一网络节点根据预设信息生成的；
    其中，所述预设信息包括以下信息中的至少一项：
    所述第一网络节点存储的终端上下文信息中的被允许的网络切片选择辅助标识Allowed NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的默认的网络切片选择辅助标识Default NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的配置的网络切片选择辅助标识Configured NSSAI信息；
    所述第一网络节点存储的终端上下文信息中的频点优先级参数信息；
    所述第一网络节点本地维护的频点集合信息，所述频点集合信息包括同频频点集合信息和异频频点集合信息；
    所述第一网络节点本地维护的频点集合中各个频点所支持的切片类型的标识信息。
  50. 根据权利要求49所述的网络节点，其中，所述Default NSSAI信息或Configured NSSAI信息是通过接口协议从第二网络节点获取的。
  51. 一种网络节点，所述网络节点为第二网络节点，包括存储器、处理器、收发机及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现以下步骤：
    利用所述收发机，通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
  52. 根据权利要求51所述的网络节点，其中，所述处理器还用于：
    通过非接入层协议向所述终端的非接入层配置第二预设信息；
    其中，所述第二预设信息包括：所述终端的小区选择或重选相关的预设切片类型标识信息；
    所述第二网络节点为移动管理功能AMF、统一数据管理平台UDM或会话管理功能SMF。
  53. 根据权利要求52所述的网络节点，其中，所述第二预设信息还包括：所述预设切片类型标识信息对应的类型优先级信息。
  54. 一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现如权利要求1至35任一项所述的小区重选方法的步骤。
  55. 一种小区重选装置，应用于终端，包括：
    第一接收模块，用于接收第一网络节点发送的第一预设信息；
    第一确定模块，用于根据参考信息，确定目标重选小区；
    其中，所述参考信息包括所述第一预设信息和/或第二预设信息；
    所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息；
    所述第二预设信息包括：所述终端的接入层从所述终端的非接入层获取的小区选择或重选相关的预设切片类型标识信息。
  56. 一种小区重选装置，应用于第一网络节点，包括：
    第一发送模块，用于向终端发送第一预设信息；
    其中，所述第一预设信息包括：所述第一网络节点生成的频点集合和所述频点集合中各个频点所支持切片类型的标识信息。
  57. 一种小区重选装置，应用于第二网络节点，包括：
    第二发送模块，用于通过接口协议向第一网络节点发送终端的默认的切片选择辅助标识Default NSSAI信息或者配置的切片选择辅助标识Configured NSSAI信息。
PCT/CN2021/106000 2020-07-15 2021-07-13 小区重选方法、装置、终端及网络节点 WO2022012524A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010683120.1A CN113950108B (zh) 2020-07-15 2020-07-15 一种小区重选方法、装置、终端及网络节点
CN202010683120.1 2020-07-15

Publications (1)

Publication Number Publication Date
WO2022012524A1 true WO2022012524A1 (zh) 2022-01-20

Family

ID=79326166

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/106000 WO2022012524A1 (zh) 2020-07-15 2021-07-13 小区重选方法、装置、终端及网络节点

Country Status (2)

Country Link
CN (1) CN113950108B (zh)
WO (1) WO2022012524A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113950040A (zh) * 2020-07-15 2022-01-18 大唐移动通信设备有限公司 一种切片注册方法、装置、终端及网络节点
WO2023151462A1 (zh) * 2022-02-14 2023-08-17 华为技术有限公司 通信方法及装置、存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107197486A (zh) * 2016-03-15 2017-09-22 中兴通讯股份有限公司 一种驻留目标选择方法、传输方法及装置
US20180124661A1 (en) * 2016-11-03 2018-05-03 Industrial Technology Research Institute User equipment, access node and slice-based handover method thereof
CN108924884A (zh) * 2017-04-04 2018-11-30 华为技术有限公司 通信方法及通信设备
CN111386727A (zh) * 2020-01-20 2020-07-07 北京小米移动软件有限公司 小区重选、信息传输方法及装置、通信设备及存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108024314B (zh) * 2016-11-03 2021-07-16 华为技术有限公司 一种选择网络的方法及装置
CN108738096B (zh) * 2017-04-18 2022-10-14 维沃移动通信有限公司 一种小区选择和重选的方法、终端、基站及核心网实体
CN110603851B (zh) * 2017-05-09 2020-12-01 华为技术有限公司 一种基于切片的通信方法和设备
CN109246775B (zh) * 2017-06-16 2021-09-07 华为技术有限公司 小区重选方法及相关设备
CN113950040A (zh) * 2020-07-15 2022-01-18 大唐移动通信设备有限公司 一种切片注册方法、装置、终端及网络节点

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107197486A (zh) * 2016-03-15 2017-09-22 中兴通讯股份有限公司 一种驻留目标选择方法、传输方法及装置
US20180124661A1 (en) * 2016-11-03 2018-05-03 Industrial Technology Research Institute User equipment, access node and slice-based handover method thereof
CN108924884A (zh) * 2017-04-04 2018-11-30 华为技术有限公司 通信方法及通信设备
CN111386727A (zh) * 2020-01-20 2020-07-07 北京小米移动软件有限公司 小区重选、信息传输方法及装置、通信设备及存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "Further Discussion on Slice Information over RRC", 3GPP DRAFT; R2-1809971 FURTHER DISCUSSION ON SLICE INFORMATION OVER RRC, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Montreal, Canada; 20180702 - 20180706, 1 July 2018 (2018-07-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051467209 *

Also Published As

Publication number Publication date
CN113950108B (zh) 2024-05-07
CN113950108A (zh) 2022-01-18

Similar Documents

Publication Publication Date Title
EP2995131B1 (en) Priority-based cell reselection with cell specific priorities
WO2022012524A1 (zh) 小区重选方法、装置、终端及网络节点
US20140071854A1 (en) System and Methods for Dual Mode Network Selection
US20230062362A1 (en) Network slice load control method and related product
CN113498121B (zh) 一种通信的方法及装置
EP3611968B1 (en) Base station and method
WO2015169238A1 (zh) 一种小区选择及其控制方法及装置
WO2015035590A1 (zh) Anr测量配置方法及装置
WO2017063125A1 (zh) 一种小区重选方法及用户终端
CN115136681A (zh) 通信方法及通信装置
US20220353774A1 (en) Method and ue for 5g data session switching
KR20220134614A (ko) 슬라이스 액세스 실패를 줄이기 위한 시스템 및 방법
WO2022228559A1 (zh) 小区重选的方法、通信装置和计算机可读存储介质
WO2019214693A1 (zh) 确定父节点的方法及装置
WO2018033099A1 (zh) 一种系统信息广播、系统信息接收方法及装置
WO2022054267A1 (ja) 端末、基地局、通信方法及びプログラム
US12058579B2 (en) Cell reselection method and apparatus based on slice, and device and storage medium
WO2019219671A1 (en) Core resource distribution
WO2021232299A1 (zh) 基于网络切片的小区确定方法及相关产品
WO2024001707A1 (zh) 通信方法和装置
CN106455120B (zh) 一种处理异系统间接口的方法、基站及无线设备
WO2022226921A1 (zh) 无线通信方法及设备
WO2022151735A1 (zh) 用于实现移动性管理的方法和用户终端
WO2023279398A1 (zh) 切片信息的使用方法、装置、设备及存储介质
WO2023130975A1 (zh) 小区重选方法、切片组信息处理方法、终端及网络侧设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21842885

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21842885

Country of ref document: EP

Kind code of ref document: A1