WO2018171408A1 - Procédé de resélection de cellule, équipement d'utilisateur, et dispositif côté réseau - Google Patents

Procédé de resélection de cellule, équipement d'utilisateur, et dispositif côté réseau Download PDF

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Publication number
WO2018171408A1
WO2018171408A1 PCT/CN2018/077886 CN2018077886W WO2018171408A1 WO 2018171408 A1 WO2018171408 A1 WO 2018171408A1 CN 2018077886 W CN2018077886 W CN 2018077886W WO 2018171408 A1 WO2018171408 A1 WO 2018171408A1
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Prior art keywords
cell
rna
belongs
slice
information
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PCT/CN2018/077886
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English (en)
Chinese (zh)
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WO2018171408A9 (fr
Inventor
傅婧
梁靖
张元�
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电信科学技术研究院有限公司
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Publication of WO2018171408A1 publication Critical patent/WO2018171408A1/fr
Publication of WO2018171408A9 publication Critical patent/WO2018171408A9/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events

Definitions

  • the present disclosure relates to the field of communications, and in particular to a cell reselection method, a user equipment, and a network side device.
  • a new mobility state RRC_INACTIVE that is, the inactive state of the UE, is introduced in the 5G New RAT (New Radio) system.
  • the RAN Radio Access Network
  • the UE side and the RAN node store the UE AS context, so that the connection state can be quickly restored or remain in the inactive state and the data is transmitted/received;
  • the UE is transparent to the core network in the inactive state, that is, the core network still considers that the UE is always in the connected state, so downlink signaling or data will reach the RAN node.
  • a RAN level Location Area RNA (RAN Notification Area) is currently introduced.
  • the RNA to which the UE belongs is configured at the same time, wherein the RNA may be divided by the cell id or the RAN area ID.
  • the gNB of the RAN node sends a notification message to find the UE through all cells under the RNA region.
  • the UE selects a cell with better signal to camp based on the R criterion, if the newly selected camped cell does not belong to the same RNA as the original camped cell.
  • RNA update is required to enable the RAN node to find the UE, and the RNA update will inevitably generate related signaling, resulting in excessive overhead between the air interface and the RAN interface.
  • the mobile network system specifically includes different types of networks (such as mobile broadband, large-scale Internet of Things, mission-critical Internet of Things, etc.) to serve different types of devices and requirements (such as mobility, billing, security, and policy). Control, delay, reliability, etc.).
  • networks such as mobile broadband, large-scale Internet of Things, mission-critical Internet of Things, etc.
  • the current 5G communication system divides multiple logical networks on a separate physical network through network slicing technology, without separately deploying different networks. This also means that after the UE reselects the cell, if the new camping cell does not belong to the same slice as the original camping cell, the related update of the slice is also required, which, like the RNA update, also generates signaling overhead.
  • an embodiment of the present disclosure provides a cell reselection method, which is applied to a user equipment, including:
  • system information broadcasted by the cell where the system information carries information of the RNA and/or slice of the RNA to which the cell belongs;
  • a cell with the same and/or the same slice as the RNA to which the current camping cell of the user equipment belongs is preferentially selected as the target cell;
  • the step of receiving the system information broadcast by the cell includes: receiving system information broadcasted by the cell, obtaining information about information and/or slice of the RNA to which the current camping cell belongs, and a neighbor adjacent to the currently camped cell. Information about the RNA and/or slice of the RNA to which the cell belongs;
  • the step of preferentially selecting a cell that is the same as the RNA to which the user equipment is currently camped and/or the same slice as the target cell includes: in the candidate cell, preferentially selecting the same RNA as the current camping cell of the user equipment And/or the same cell as the target cell, the candidate cell including the current camping cell and the neighboring cell.
  • the system information that is received by the receiving cell obtains information about the RNA and/or the slice of the RNA to which the current camping cell belongs, and information and/or slice of the RNA to which the neighboring cell adjacent to the current camping cell belongs.
  • Information including:
  • Receiving system information of the currently camped cell broadcast acquiring information about the information and/or the slice of the RNA to which the current camping cell belongs from the system information broadcasted by the current camping cell, and scanning the current camped cell a neighboring cell, and receiving system information broadcast by the neighboring cell, and acquiring information about the RNA and/or slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • the current The information of the RNA to which the camping cell belongs includes at least the RAN area ID of the RNA to which the current camping cell belongs, and the information of the RNA to which the neighboring cell belongs includes at least: a RAN area ID of the RNA to which the neighboring cell belongs;
  • the current camping cell belongs If the information of the slice to which the current camping cell belongs is obtained from the system information broadcasted by the current camping cell, and the information of the slice to which the neighboring cell belongs is obtained from the system information broadcast by the neighboring cell, the current camping The information of the slice to which the cell belongs includes at least the ID of the slice to which the current camping cell belongs, and the information of the slice to which the neighboring cell belongs includes at least the ID of the slice to which the neighboring cell belongs;
  • the information of the RNA to which the current camping cell belongs includes at least: a RAN area ID of the RNA to which the current camping cell belongs; the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighboring cells belonging to the same RNA as the currently camped cell and/or with the current camp a second list of neighbor cells belonging to different RNAs and/or a third list of neighbor cells to be classified according to RNA;
  • the information of the slice to which the current camping cell belongs includes at least: The ID of the slice to which the current camping cell belongs; the information of the slice to which the neighboring cell belongs includes at least: a fourth list of neighbor cells belonging to the same slice ID as the current camping cell and/or with the current camping cell A fifth list of neighbor cells belonging to different slice IDs and/or a sixth list of neighbor cells sorted by slices.
  • the step of preferentially selecting the same cell as the target cell of the current camping cell of the user equipment in the candidate cell includes:
  • the target cell that meets the preset first reselection condition is not selected, try to select a cell that meets the preset second reselection condition as the target cell from the candidate cells that belong to different RNAs from the current camping cell. .
  • the step of preferentially selecting the same cell as the cell to which the user equipment currently camps belongs is used as the target cell, including:
  • the target cell that meets the preset third reselection condition is not selected, try to select a cell that meets the preset fourth reselection condition as the target cell from the candidate cells that belong to different slices from the current camping cell. .
  • the step of preferentially selecting a cell that is the same as the cell and the slice to which the current camping cell of the user equipment belongs is the target cell, including:
  • the target cell that satisfies the preset fifth reselection condition is not selected, from the candidate cell that belongs to the same RNA as the current camping cell and belongs to a different slice, and/or belongs to the same slice as the current camping cell And in the candidate cells belonging to different RNAs, try to select a cell that meets the preset sixth reselection condition as the target cell;
  • the target cell that satisfies the preset sixth reselection condition is not selected, try to select one candidate cell that belongs to a different RNA from the current camping cell and belongs to a different slice, and selects one that satisfies the preset seventh reselection condition.
  • the cell serves as a target cell.
  • the step of preferentially selecting, as the target cell, the same cell as the target cell and the same slice as the RNA to which the current camping cell of the user equipment belongs, in the candidate cell includes:
  • Determining the priority of each candidate cell based on a preset rule including:
  • the area reselection method further includes:
  • RNA priority offset of the candidate cell and/or the slice priority offset from system information currently broadcast by the camping cell.
  • an embodiment of the present disclosure further provides a cell reselection method, which is applied to a network side device, and includes:
  • the network side device broadcasts system information of the transmitting cell, where the system information carries information of the RNA to which the cell belongs and/or information of a slice to which the cell belongs.
  • the information about the RNA to which the cell belongs includes at least: a RAN area ID of the RNA to which the cell belongs;
  • the information of the slice to which the cell belongs includes at least the ID of the slice to which the cell belongs.
  • the system information further carries information about the information and/or the slice of the RNA to which the neighboring cell adjacent to the cell belongs.
  • the information about the RNA to which the neighboring cell belongs to the system information includes:
  • the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighboring cells belonging to the same RNA as the cell and/or a second list of neighboring cells belonging to different cells of the cell and/or classification according to RNA a third list of the neighboring cells;
  • the information of the slice to which the neighboring cell belongs includes at least:
  • system information carries:
  • RNA priority bias and/or slice priority bias for candidate cells are derived from a source and/or slice priority bias for candidate cells.
  • an embodiment of the present disclosure further provides a user equipment, including:
  • a receiving module configured to receive system information of a cell broadcast, where the system information carries information about an RNA and/or a slice of the RNA to which the cell belongs;
  • a selection module configured to preferentially select, as the target cell, a cell that is the same as the RNA to which the current resident cell of the user equipment belongs and/or the slice is the same when the cell reselection is required;
  • the receiving module specifically receives the system information broadcasted by the cell, obtains information about the RNA and/or the slice of the RNA to which the current camping cell belongs, and information about the RNA to which the neighboring cell adjacent to the current camping cell belongs. Or sliced information;
  • the selecting module is specifically configured to select, in the candidate cell, a cell that is the same as the RNA to which the current camping cell of the user equipment belongs and/or the same slice, and the candidate cell includes the current camping cell and the neighboring cell. Community.
  • the receiving module includes:
  • a first receiving submodule configured to receive system information of a current camped cell broadcast, obtain information about information and/or a slice of the RNA to which the current camping cell belongs from the system information broadcast by the current camping cell, and, And scanning the neighboring cell adjacent to the current camping cell, and receiving the system information broadcast by the neighboring cell, and acquiring information about the RNA and/or the slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • a second receiving submodule configured to receive system information of a current camped cell broadcast, and obtain, from the system information broadcasted by the current camping cell, information about information and/or a slice of the RNA to which the currently camped cell belongs, and Information on the information and/or slice of the RNA to which the neighboring cell adjacent to the current camping cell belongs.
  • the current The information of the RNA to which the camping cell belongs includes at least the RAN area ID of the RNA to which the current camping cell belongs, and the information of the RNA to which the neighboring cell belongs includes at least: a RAN area ID of the RNA to which the neighboring cell belongs;
  • the current camping cell belongs If the information of the slice to which the current camping cell belongs is obtained from the system information broadcasted by the current camping cell, and the information of the slice to which the neighboring cell belongs is obtained from the system information broadcast by the neighboring cell, the current camping The information of the slice to which the cell belongs includes at least the ID of the slice to which the current camping cell belongs, and the information of the slice to which the neighboring cell belongs includes at least the ID of the slice to which the neighboring cell belongs;
  • the information of the RNA to which the current camping cell belongs includes at least: a RAN area ID of the RNA to which the current camping cell belongs; the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighboring cells belonging to the same RNA as the currently camped cell and/or with the current camp a second list of neighbor cells belonging to different RNAs and/or a third list of neighbor cells to be classified according to RNA;
  • the information of the slice to which the current camping cell belongs includes at least: The ID of the slice to which the current camping cell belongs; the information of the slice to which the neighboring cell belongs includes at least: a fourth list of neighbor cells belonging to the same slice ID as the current camping cell and/or with the current camping cell A fifth list of neighbor cells belonging to different slice IDs and/or a sixth list of neighbor cells sorted by slices.
  • the selection module includes:
  • the first selection sub-module includes:
  • a first selecting unit configured to select, from a candidate cell that belongs to the same RNA as the current camping cell, a cell that meets a preset first reselection condition as a target cell;
  • the target cell of the reselection condition attempts to select a cell that meets the preset second reselection condition as the target cell from the candidate cells belonging to different RNAs from the current camping cell.
  • the selection module includes:
  • the first selection sub-module includes:
  • a second selecting unit configured to select, from a candidate cell that belongs to the same slice as the current camping cell, a cell that meets a preset third reselection condition as a target cell;
  • the target cell of the reselection condition attempts to select a cell that meets the preset fourth reselection condition as the target cell from the candidate cells that belong to different slices from the current camping cell.
  • the selection module includes:
  • the first selection sub-module includes:
  • a third selecting unit configured to select, as a target cell, a cell that meets a preset fifth reselection condition in a candidate cell that belongs to the same RNA and the same slice as the current camping cell;
  • the target cell that satisfies the preset fifth reselection condition is not selected, from the candidate cell that belongs to the same RNA as the current camping cell and belongs to a different slice, and/or belongs to the same slice as the current camping cell And in the candidate cells belonging to different RNAs, try to select a cell that meets the preset sixth reselection condition as the target cell; if the target cell that meets the preset sixth reselection condition is not selected, then the current resident In the candidate cells that belong to different RNAs and belong to different slices, the cell that attempts to select the seventh reselection condition is selected as the target cell.
  • the selection module includes:
  • the second selection sub-module is used to:
  • Determining the priority of each candidate cell based on a preset rule including:
  • the receiving module further includes:
  • a third receiving submodule configured to acquire an RNA priority offset and/or the slice priority offset of the candidate cell from system information that is currently broadcast by the camping cell.
  • the disclosure further provides a network side device, including:
  • a sending module configured to send system information of the cell, where the system information carries information about an RNA to which the cell belongs and/or information of a slice to which the cell belongs.
  • the information about the RNA to which the cell belongs includes at least: a RAN area ID of the RNA to which the cell belongs;
  • the information of the slice to which the cell belongs includes at least the ID of the slice to which the cell belongs.
  • the system information further carries information about the information and/or the slice of the RNA to which the neighboring cell adjacent to the cell belongs.
  • the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighbor cells belonging to the same RNA as the cell and/or a second list of neighbor cells belonging to different cells of the cell and/or according to RNA a third list of the neighboring cells that are classified;
  • the information of the slice to which the neighboring cell belongs includes at least: a fourth list of neighbor cells belonging to the same slice ID as the cell and/or a fifth list of neighbor cells belonging to different cell IDs of the cell and/or according to the slice A third list of the neighboring cells that are classified.
  • system information carries:
  • RNA priority bias and/or slice priority bias for candidate cells are derived from a source and/or slice priority bias for candidate cells.
  • the present disclosure also provides a user equipment, including a processor, a transceiver, and a memory;
  • the processor is configured to read a program in the memory and perform the following process:
  • system information broadcasted by the cell where the system information carries information of the RNA and/or slice of the RNA to which the cell belongs;
  • a cell with the same and/or the same slice as the RNA to which the current camping cell of the user equipment belongs is preferentially selected as the target cell;
  • the transceiver is configured to receive and transmit data
  • the memory is used to store data used by the processor to perform operations.
  • the present disclosure also provides a network side device, including a processor, a transceiver, and a memory;
  • the processor is configured to read a program in the memory and perform the following process:
  • system information of the cell where the system information carries information about an RNA to which the cell belongs and/or information of a slice to which the cell belongs;
  • the transceiver is configured to receive and transmit data
  • the memory is used to store data used by the processor to perform operations.
  • the solution of the present disclosure enables the user equipment to preferentially select a cell that does not need to perform RNA update and/or slice update to re-select when the cell is reselected, thereby reducing the update frequency of the RNA and/or slice, thereby effectively reducing the frequency.
  • the unnecessary signaling overhead generated by cell reselection guarantees the user experience.
  • FIG. 1 is a schematic diagram of steps of a cell reselection method applied to a client device according to the present disclosure
  • FIG. 2 is a schematic diagram of steps of a cell reselection method applied to a network side device according to the present disclosure
  • FIG. 3 is a schematic diagram of a logical structure of a client device according to the present disclosure.
  • FIG. 4 is a schematic structural diagram of a network side device according to the present disclosure.
  • FIG. 5 is a schematic structural diagram of a client device according to the present disclosure.
  • the present disclosure provides a solution to the problem that a user equipment needs to update RNA or slice after a cell reselection in the related art, resulting in a large signaling overhead.
  • some embodiments of the present disclosure provide a cell reselection method, which is applied to a user equipment (for example, a terminal), including:
  • Step 11 Receive system information broadcasted by the cell, where the system information carries information about the RNA and/or slice of the RNA to which the cell belongs;
  • Step 12 When cell reselection is required, the cell with the same and/or the same slice as the RNA to which the current camping cell of the user equipment belongs is preferentially selected as the target cell;
  • step 13 the target cell is camped on, and it should be noted that the target cell may be the current camping cell or other new cells.
  • the method of some embodiments of the present disclosure enables the user equipment to preferentially prioritize cells that do not require RNA updates and/or slice updates when reselecting cells, thereby reducing RNA and/or slice updates.
  • the frequency in turn, effectively reduces unnecessary signaling overhead caused by cell reselection and ensures the user experience.
  • the user equipment of some embodiments of the present disclosure selects a target cell to camp in the candidate cell, and the candidate cell is obviously a cell that the user equipment can scan, which may be one, and There may be multiple, and generally includes a current camped cell of the user equipment and a neighboring cell adjacent to the currently camped cell.
  • the user equipment receives the system information broadcasted by the cell to obtain information and/or slice information of the RNA to which the current camping cell belongs, and a neighboring cell adjacent to the currently camped cell.
  • Information and/or slice information of the associated RNA is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to the cell, the user equipment receives the system information broadcasted by the cell to obtain information and/or slice information of the RNA to which the current camping cell belongs, and a neighboring cell adjacent to the currently camped cell.
  • some embodiments of the present disclosure may obtain information about the RNA to which the current camping cell belongs and/or information of the RNA to which the neighboring cell belongs in two ways;
  • the information of which cell's RNA is obtained from which cell broadcast system information. That is, receiving system information broadcasted by the cell, obtaining information of information and/or slice of the RNA to which the current camping cell belongs, and scanning a neighboring cell adjacent to the currently camped cell, and receiving system information broadcast by the neighboring cell, Obtaining information about the RNA and/or the slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • the other is to obtain the information of the RNAs of all candidate cells directly from the system information broadcasted by the currently camped cell. That is, receiving system information of the current camped cell broadcast, acquiring, from the system information broadcasted by the current camping cell, information of the RNA and/or slice of the RNA to which the currently camped cell belongs, and adjacent to the currently camped cell. Information about the RNA and/or slice of the RNA to which the neighboring cell belongs.
  • the information of the RNA to which the current camping cell belongs includes at least the RAN area ID of the RNA to which the current camping cell belongs and/or the ID of the slice. Similarly, the information of the RNA to which the neighboring cell belongs includes at least the RAN area ID of the RNA to which the neighboring cell belongs and/or the ID of the slice.
  • the user equipment may compare the RAN area ID of the neighboring cell with the RAN area ID of the currently camped cell, thereby determining the same candidate cell as the RNA to which the currently camped cell belongs. Similarly, the user equipment may also compare the slice ID of the neighboring cell with the slice ID of the currently camped cell, thereby determining the candidate cell that is the same as the slice to which the currently camped cell belongs.
  • the user equipment may selectively prioritize one candidate cell belonging to the same RNA and/or the same slice as the currently camped cell as the target cell to camp on.
  • the information of the RNA to which the current camping cell belongs includes at least the RAN area ID of the RNA to which the current camping cell belongs, and the information of the RNA to which the neighboring cell belongs. At least comprising: a first list of neighbor cells belonging to the same RNA as the current camping cell and/or a second list of neighbor cells belonging to different RNAs of the current camping cell and/or neighbors to be sorted by RNA The third list of cells.
  • the current cell 1 of the user equipment belongs to the RAN area ID 1, the neighboring cell cell 2, and belongs to the RAN area ID 1; the neighboring cell cell 3 belongs to the RAN area ID 1; the neighboring cell cell 4, It belongs to RAN area ID 2; neighboring cell cell 5 belongs to RAN area ID 3.
  • the RAN area ID of the current cell 1 is RAN area ID1, the first list may be ⁇ cell2, cell3 ⁇ , the second list may be ⁇ cell4, cell5 ⁇ , and the third list is multiple, including the RAN area.
  • ID 1 ⁇ cell 1, cell 2, cell 3 ⁇ , RAN area ID 2 ⁇ cell 4 ⁇ , RAN area ID 3 ⁇ cell 5 ⁇ .
  • the user equipment can determine which neighboring cells are the same as the RAN to which the current camping cell belongs, which neighboring cells are different from the RAN to which the current camping cell belongs, and even each candidate cell is specific. Corresponding RAN area ID.
  • the information of the slice of the embodiment of the present disclosure may be the same as the information of the RAN, that is, if the information of the slice to which the current resident cell belongs is obtained from the system information broadcasted by the current camping cell, and the neighboring cell If the information about the slice to which the neighboring cell belongs is obtained, the information about the slice to which the current camping cell belongs includes at least the ID of the slice to which the current camping cell belongs, and the information of the slice to which the neighboring cell belongs includes at least: the neighboring cell The ID of the slice to which it belongs;
  • the information of the slice to which the current camping cell belongs includes at least: the currently camped cell. ID of the associated slice; the information of the slice to which the neighboring cell belongs includes at least: a fourth list of neighbor cells belonging to the same slice ID as the current camping cell and/or a fifth cell of the neighbor cell belonging to a different slice ID of the current camping cell A sixth list of neighboring cells sorted by list and/or by slice.
  • the user equipment can also determine, according to the foregoing slice information, which neighboring cells are the same as the slice to which the current camping cell belongs, which neighboring cells are different from the slice to which the current camping cell belongs, and even the slice ID corresponding to each candidate cell. .
  • the user equipment of some embodiments of the present disclosure next selects, in the candidate cell, the same cell as the RNA to which the current camping cell of the user equipment belongs, as the target cell.
  • Some embodiments of the present disclosure have two ways to preferentially select cells of the same RNA and/or the same slice to reside.
  • One is to select one target cell from the candidate cells belonging to the same RNA and/or the same slice as the current camping cell, and if the target cell is not selected, the target cell is selected from other candidate cells.
  • the candidate cell is the same as the cell to which the current camping cell of the user equipment belongs, the following steps are included:
  • the candidate cell that belongs to the same RNA as the current camping cell attempts to select a cell that meets the preset first reselection condition as the target cell; the preset first reselection condition may, but does not necessarily mean, only one condition.
  • the R criterion and/or the idle state cell reselection criterion in the related art may be included; for example, if the first reselection condition adopts the R criterion, a cell with better signal quality may be selected as a target cell among candidate cells belonging to the same RNA. Since the foregoing R criterion and the idle state cell reselection criterion are related technologies, the detailed description is not repeated herein.
  • the preset second reselection condition may also, but not necessarily, generally refer to only one condition, and may include an R criterion and/or an idle state cell reselection criterion in the related art;
  • the candidate cell is the same as the cell to which the current cell of the user equipment belongs, as the target cell, the following steps are included:
  • a candidate cell that meets the preset fourth reselection condition is selected as the target cell from the candidate cells that belong to different slices from the current camping cell.
  • preset third reselection condition and preset fourth reselection condition of some embodiments of the present disclosure may also, but not necessarily, generally refer to only one condition, and may include the R criterion and/or idle in the related art. State cell reselection criteria.
  • the following steps are included:
  • the target cell that satisfies the preset fifth reselection condition is not selected, from the candidate cell that belongs to the same RNA as the current camping cell and belongs to a different slice, and/or belongs to the same slice as the current camping cell And in the candidate cells belonging to different RNAs, try to select a cell that meets the preset sixth reselection condition as the target cell;
  • target cell that satisfies the preset sixth reselection condition is not selected, try to select a cell that meets the preset seventh reselection condition from among candidate cells that belong to different RNAs and belong to different slices with the current camping cell.
  • Target cell If the target cell that satisfies the preset sixth reselection condition is not selected, try to select a cell that meets the preset seventh reselection condition from among candidate cells that belong to different RNAs and belong to different slices with the current camping cell. Target cell.
  • preset fifth reselection condition preset sixth reselection condition
  • preset seventh reselection condition may also, but not necessarily, generally only have one condition, and may include R criteria and/or related technologies. Idle state cell reselection criteria.
  • some embodiments of the present disclosure preferentially select a target cell from candidate cells belonging to the same RNA and the same slice as the current camping cell, and if not selected, the secondary priority belongs to the same RNA as the currently camped cell but If the slice is different, and/or the target cell is selected from the candidate cell with the same slice but different RNA, if it is still not selected, the target cell is selected from the other candidate cells whose RNA and the slice are different from the current camping cell.
  • some embodiments of the present disclosure may allow a user equipment to more likely select a cell that does not require RNA updates and/or slice updates to camp on by the priority cell approach shown above.
  • Another priority selection scheme may be to set a priority offset, and determine a priority of each candidate cell based on the priority offset, wherein the priority offset may ensure that the same RNA and the current camping cell belong to the same RNA and /or the candidate cell of the same slice has a higher priority than other candidate cells, so that in the selection process, there is a higher probability of becoming the target cell.
  • the step of preferentially selecting the same cell and/or the same cell as the target cell of the current camping cell of the user equipment as the target cell includes:
  • the candidate may be determined according to cell signal strength, signal quality, and idleness.
  • the priority of the cell For example, the stronger the candidate cell, the higher the priority;
  • the priority of the candidate cell belonging to the same RAN area ID as the current camping cell is positively corrected and/or the candidate belonging to a different RAN area ID with the current camping cell
  • the priority of the cell is reverse corrected
  • a cell with the highest priority is selected as the target cell.
  • aspects of some embodiments of the present disclosure are also capable of allowing the user equipment to select as many cells as possible that do not require RNA updates and/or do not require slice updates.
  • the method of some embodiments of the present disclosure may, in practical applications, allow system information broadcast by the currently camped cell to carry the RNA priority offset of the candidate cell and/or the slice priority offset.
  • RNAs may have different priority offsets.
  • each of the RNA priority offsets is used.
  • the candidate cell priority is corrected;
  • RNA priority offset only the candidate cells belonging to the same RNA as the currently camped cell have a priority offset, and correspondingly, when the priority of each candidate cell is determined based on the R criterion, according to the RNA priority offset, only The priority of the candidate cells of the current camping cell belonging to the same RNA is forward-corrected to increase the probability that such candidate cells are selected as the target cell;
  • RNA priority offset when determining the priority of each candidate cell based on the R criterion, according to the RNA priority offset, only The priority of the candidate cells belonging to different RNAs of the current camping cell is inversely modified to reduce the probability that such candidate cells are selected as the target cell.
  • the foregoing is a description of a cell reselection method on the user equipment side of some embodiments of the present disclosure.
  • some embodiments of the present disclosure further provide an application to a network side device (such as a gNB base station).
  • the cell reselection method as shown in FIG. 2, includes:
  • Step 21 The network side device broadcasts system information of the sending cell, where the system information carries information about the RNA to which the cell belongs and/or information of the slice to which the cell belongs.
  • the method of some embodiments of the present disclosure may enable the network side device to indicate, by using the broadcasted system information, that the foregoing user equipment of the present disclosure preferentially selects a cell that does not need to perform RNA update and/or slice update when performing cell reselection.
  • the frequency of the RNA update and/or the slice update of the user equipment can be effectively reduced, thereby effectively reducing unnecessary signaling overhead caused by cell reselection and ensuring the user experience.
  • the information of the RNA to which the cell belongs to at least the RAN area ID of the RNA to which the cell belongs, and the information of the slice to which the cell belongs includes at least: the cell to which the cell belongs.
  • the user equipment may obtain information of information and/or slice of the RNA to which the currently camped cell belongs.
  • the user equipment obtains information according to the RNA of the neighboring cell that can be adjacent to the cell in which it is currently camped. / or sliced information.
  • some embodiments of the present disclosure may further carry information about the RNA to which the neighboring cell adjacent to the cell belongs.
  • the user can directly obtain its current camping cell and the current camping directly from the system information broadcasted by the current camping cell.
  • RNA information and slice information of neighboring cells adjacent to the cell are examples of neighboring cells adjacent to the cell.
  • the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighbor cells belonging to the same RNA as the cell and/or a second list of neighbor cells belonging to different cells of the cell and/or classified according to RNA a third list of the neighboring cells;
  • the current cell 1 of the user equipment belongs to the RAN area ID 1, the neighboring cell cell 2, and belongs to the RAN area ID 1; the neighboring cell cell 3 belongs to the RAN area ID 1; the neighboring cell cell 4, It belongs to RAN area ID 2; neighboring cell cell 5 belongs to RAN area ID 3.
  • the RAN area ID of the current cell 1 is RAN area ID1, the first list may be ⁇ cell2, cell3 ⁇ , the second list may be ⁇ cell4, cell5 ⁇ , and the third list is multiple, including the RAN area.
  • ID 1 ⁇ cell 1, cell 2, cell 3 ⁇ , RAN area ID 2 ⁇ cell 4 ⁇ , RAN area ID 3 ⁇ cell 5 ⁇ .
  • the user equipment can determine which neighboring cells are the same as the RAN to which the current camping cell belongs, which neighboring cells are different from the RAN to which the current camping cell belongs, and even each candidate cell is specific. Corresponding RAN area ID.
  • the information of the slice to which the foregoing neighboring cell belongs in some embodiments of the present disclosure includes at least: a fourth list of neighboring cells belonging to the same slice ID as the cell and/or a neighboring cell belonging to a different slice ID of the cell. A fifth list and/or a third list of the neighbor cells sorted by slice.
  • the above-mentioned system information of some embodiments of the present disclosure further carries: an RNA priority offset and/or a slice priority offset, so that the user equipment can be based on the RNA priority during the cell reselection process.
  • the quantity and/or slice priority offsets are modified to prioritize the candidate cells, so that cells that do not need to perform RNA update and slice update can be selected to camp as much as possible.
  • the cell reselection method of the user equipment UE and the network side equipment is described in detail below in combination with different implementation manners.
  • Implementation 1 The network side device broadcasts information of the RNA of the UE currently camping on the cell, and the Inactive UE (inactive UE) preferentially performs cell reselection in the current camping cell and the cell belonging to the same RNA as the current camping cell.
  • the RAN area ID of the RNA to which the Inactive UE belongs includes two, that is, ⁇ RAN area ID 1, RAN area ID 2 ⁇ .
  • the Inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1.
  • the cell 1 has a neighboring cell: cell 2, which belongs to the RAN area ID 1; the cell 3 belongs to the RAN area ID 1; and the cell 4 belongs to the RAN area ID 2 ; cell 5, belonging to RAN area ID 3; cell 6, belonging to RAN area ID 4.
  • Step 1 The network side device broadcasts the system information of the cell 1 cell, including the RAN area ID 1 to which the cell 1 cell belongs;
  • Step 2 When the Inactive UE camps on cell 1, performs cell reselection, first scans neighboring neighboring cells, and reads system information of each neighboring cell to obtain neighboring cells that belong to RAN area ID 1 or RAN area ID 2 And in these neighboring cells, first sort according to the R criterion (that is, the calculation formula of the idle state R criterion in the related art), and select the cell with the best signal quality to camp; only when there is no suitable cell in such neighboring cell, Cell reselection is performed according to the idle state cell reselection rule.
  • the R criterion that is, the calculation formula of the idle state R criterion in the related art
  • the inactive UE finds that the neighbor cells cell 2, cell 3, and cell 4 also belong to the same RNA, and then sorts according to the R criterion for cell 2 and cell 3 and the current resident cell 1, for example, selecting cell 2 with better signal quality; Or the signal quality of cell 1, cell 2, cell 3, and cell 4 are both poor, and the S criterion cannot be met. Then, the UE performs cell reselection according to the idle cell reselection rule, for example, selecting cell 5 to camp.
  • Implementation 2 the network side device broadcasts the information of the RNA of the current camping cell of the UE, and the list of the neighboring cells belonging to the RNA, and the inactive state UE preferentially belongs to the neighboring cell and the neighboring RNA belonging to the same neighboring cell as the current camping cell Cell reselection is performed in the cell.
  • RNA to which the inactive UE belongs is ⁇ RAN area ID 1 ⁇ .
  • the Inactive UE resides in cell 1, and cell 1 belongs to RAN area ID 1.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the RAN area ID1 to which the cell 1 belongs, and the neighbor cell list ⁇ cell2, cell3, cell 5 ⁇ belonging to the RAN area ID 1.
  • Step 2 When the Inactive UE camps on the cell 1 and performs cell reselection, it first determines the neighbor cells cell 2, cell 3, and cell 5 that belong to the same RNA region as the cell 1 according to the system information in the cell 1.
  • the R criterion is to sort the signal quality in cell 1, cell 2, cell 3, and cell 5, and select the cell with the best signal quality to stay; only when the cells are not suitable, the cell reselection rule according to the idle state Perform cell reselection, for example, scanning neighbor cell 6 during the reselection process, and finally selecting cell 6 to camp according to the idle cell reselection rule.
  • Embodiment 3 the network side device broadcasts information of the RNA of the currently camped cell of the UE, and a list of neighboring cells that do not belong to the RNA, and the inactive state UE preferentially belongs to the current camped cell and the neighboring RNA belonging to the same RNA as the currently camped cell Cell reselection is performed in the cell.
  • RNA to which the inactive UE belongs is ⁇ RAN area ID 1 ⁇ .
  • the Inactive UE resides in the cell 1, the cell 1 belongs to the RAN area ID 1, and the neighboring cell is surrounded by ell 1 : cell 2, belonging to RAN area ID 1 ; cell 3, belonging to RAN area ID 1; cell 4, belonging to RAN area ID 2 ; cell 5, belonging to RAN area ID 1; cell 6, belonging to RAN area ID 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the RAN area ID1 to which the cell 1 belongs, and the neighbor cell list ⁇ cell4, cell 6 ⁇ that does not belong to the RAN area ID1;
  • Step 2 When the Inactive UE resides in the cell 1 and performs cell reselection, the cell 4 and the cell 6 are temporarily listed as blacklists according to the system information in the cell 1, and the cell 2 of the neighboring cell belonging to the RAN area ID 1 is measured first. , cell 3, cell 5; in cell 1 and cell 2, cell 3, cell 5, sorted according to the R criterion, and the cell with the best signal quality is selected for camping; only when the cells are not suitable, the cell is measured. 4 and cell 6, for example, select cell 6 to camp according to the idle state cell reselection rule.
  • Implementation 4 the network side device broadcasts information of the RNA of the UE currently camped on the cell, and a list of neighboring cells belonging to the RNA and a list of neighboring cells belonging to other surrounding RNAs, and the inactive state UE preferentially camps on the current camping cell and Cell reselection is performed in a cell in which the current camping cells belong to the same RNA.
  • the RAN area ID of the RNA to which the Inactive UE belongs includes two, that is, ⁇ RAN area ID 1, RAN area ID 2 ⁇ .
  • the Inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1.
  • the cell 1 has a neighboring cell: cell 2, which belongs to the RAN area ID 1; the cell 3 belongs to the RAN area ID 1; and the cell 4 belongs to the RAN area ID 2 ; cell 5, belonging to RAN area ID 3; cell 6, belonging to RAN area ID 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the RAN area ID 1 to which the cell 1 belongs, and the neighbor cell list ⁇ cell 2, cell 3 ⁇ to which the RNA belongs to the RAN area ID 1, and the surrounding RNA belongs to the RAN area ID 2
  • Step 2 When the Inactive UE camps on the cell 1 and performs cell reselection, it first determines that the cell 2, the cell 3, and the cell 4 belong to the same RNA region as the cell 1 in which the Inactive UE currently resides according to the system information in the cell 1. . Then, the UE first measures the neighbor cells cell 2, cell, cell 4, and the serving cell cell 1, that is, sorts according to the R criterion, and selects the cell with the best signal quality to camp; only when the cells are not suitable, the cell is considered. 1 Other neighboring cells that do not belong to the same RNA, for example, are reselected to cell 5 for camping according to the cell reselection rule in the idle state.
  • the network side device broadcasts information of the RNA of the cell currently camped by the UE, and an increased priority offset offset for the RNA;
  • the RAN area ID of the RNA to which the Inactive UE belongs includes two, that is, ⁇ RAN area ID 1, RAN area ID 2 ⁇ .
  • the Inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1.
  • the cell 1 has a neighboring cell: cell 2, which belongs to the RAN area ID 1; the cell 3 belongs to the RAN area ID 1; and the cell 4 belongs to the RAN area ID 2 ;cell 5, belonging to RAN area ID 3;,
  • Step 1 The network side device broadcasts the information of the RNA of the cell 1 currently camped by the UE, including the RAN area ID1 to which the cell 1 belongs, and an offset suitable for the inactive state;
  • Step 2 When the Inactive UE camps on the cell 1 and performs cell reselection, the neighboring cell is scanned first, and the system information of the neighboring cell is read, and the neighboring cells cell 2, cell 3, cell 4, and cell 5 are obtained.
  • the adjacent cell cell 2, cell 3, and cell 4 are the same as the cell 1, and also belong to the RAN area ID 1 or the RAN area ID 2.
  • the Inactive UE calculates the priority (ie, the R value) of the cell 1-cell 5 according to the R criterion, and further increases the priority of the cell 1, the cell 2, the cell 3, and the cell 4 belonging to the same RNA, so that the same priority is obtained. In the next case, the UE is more likely to reselect the cell belonging to the RAN area ID 1 or the RAN area ID 2 to camp.
  • the signal quality of the neighboring cell measured by the inactive UE is the best, and the cell 2 is the second. Since the RNA region broadcast by the cell 2 is also the RNA region to which the inactive UE belongs, the R of the cell 2 is also increased.
  • the priority offset is offset, so that when the final priority is sorted, the priority of the cell 2 is the highest, and the UE reselects to the cell 2 to camp.
  • Implementation 6 The network side device broadcasts information about the RNA of the currently camped cell of the UE, and the neighbor cell list belonging to the RNA, and the corresponding priority offset offset is added to the cell of the RNA in the cell reselection process.
  • the RAN area ID of the RNA to which the inactive state UE belongs is assumed to be: ⁇ RAN area ID 1 ⁇ .
  • the Inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1.
  • the cell 1 has a neighboring cell: cell 2, which belongs to the RAN area ID 1; the cell 3 belongs to the RAN area ID 1; and the cell 4 belongs to the RAN area ID 2 ; cell 5, belonging to RAN area ID 1; cell 6, belonging to RAN area ID 3.
  • Step 1 The cell 1 cell broadcast system information, including the associated RAN area ID 1, and the RNA is also the neighbor cell list ⁇ cell2, cell3, cell 5 ⁇ of the RAN area ID 1, and also broadcasts one for the inactive state.
  • Offset The cell 1 cell broadcast system information, including the associated RAN area ID 1, and the RNA is also the neighbor cell list ⁇ cell2, cell3, cell 5 ⁇ of the RAN area ID 1, and also broadcasts one for the inactive state.
  • Step 2 The Inactive UE camps on cell 1, performs cell reselection, and measures neighbor cells cell 2, cell 4, and cell 6. According to the system information of the cell 1, it is determined that the RNA region of the cell 2 is the same as the RNA region to which the inactive UE currently belongs.
  • the corresponding offset offset is added, and of course, the current serving cell cell 1 is calculated. The R value will also increase the corresponding offset. In this way, the cell with the largest R value is preferentially selected for camping, that is, the UE is more likely to reselect the cell 2 to camp or still remain in the cell 1.
  • Implementation 7 The network side device broadcasts information about the RNA of the UE currently camped on the cell, and the neighbor cell list that does not belong to the RNA. In the cell reselection process, the corresponding offset offset is added to the cell of the RNA.
  • the RAN area ID of the RNA to which the inactive state UE belongs includes ⁇ RAN area ID 1 ⁇ .
  • the Inactive UE resides in the cell 1, the cell 1 belongs to the RAN area ID 1, and the neighboring cell is surrounded by ell 1 : cell 2, belonging to RAN area ID 1 ; cell 3, belonging to RAN area ID 1; cell 4, belonging to RAN area ID 2 ; cell 5, belonging to RAN area ID 1; cell 6, belonging to RAN area ID 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the RAN area ID1 to which the cell 1 belongs, and the neighbor cell list ⁇ cell4, cell 6 ⁇ of the RNA area that is not the RAN area ID1, and also broadcasts one for inactive.
  • the offset at the time is used in the cell reselection process. If the cell is the same RNA as the cell 1, the corresponding priority offset is further increased in the priority calculation process.
  • Step 2 The Inactive UE camps on cell 1, performs cell reselection, and measures neighbor cells cell 2, cell 4, and cell 6. According to the system information of the cell 1, it is determined that the RNA region to which the cell 4, the cell 6 and the inactive UE currently belong are different, and the cell 2 and the inactive UE currently belong to the same RNA region. Therefore, when calculating the R value of the cell 2 of the neighboring cell based on the R criterion, the corresponding offset is added. Of course, when calculating the R value of the cell 1 of the current serving cell, the corresponding offset is also added. In this way, under the same priority, the UE is more likely to reselect to cell 2 to camp or still remain in cell 1.
  • Implementation 8 The network side device broadcasts information of the RNA of the UE currently camped on the cell, the neighbor cell list belonging to the RNA and other surrounding RNA regions, and different priority offsets set for the cells of different RNAs during the cell reselection process. the amount;
  • the inactive state UE belongs to two RNA area IDs, including ⁇ RAN area ID 1, RAN area ID 2 ⁇ .
  • the Inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1.
  • the cell 1 has a neighboring cell: cell 2, which belongs to the RAN area ID 1; the cell 3 belongs to the RAN area ID 1; and the cell 4 belongs to the RAN area ID 2 ; cell 5, belonging to RAN area ID 3; cell 6, belonging to RAN area ID 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including:
  • Neighbor cell list ⁇ cell 2, cell 3 ⁇ belonging to RAN area ID 1, corresponding offset offset1;
  • the offset of offset1 and offset2 in the forward direction is greater than the offset of offset3 in the forward direction.
  • Step 2 When the Inactive UE camps on cell 1, for cell reselection, it first determines that cell 2, cell 3, and cell 4 are in the RNA region to which the Inactive UE currently belongs according to the system information in cell 1. Then, the UE calculates the priority (ie, the R value) of the neighbor cell 1 -cell 6 based on the R criterion. In this process, a larger positive correction is performed on the priorities of cell 1, cell 2, and cell 3 according to offset1, and a larger positive correction is performed on the priority of cell 4 according to offset2, and cell 5 is set according to offset3.
  • the priority is a minor positive correction or a negative correction. Thus, at the same priority, the UE is more likely to reselect or remain camped on cells belonging to the same RNA.
  • some embodiments of the present disclosure may also preferentially select a cell that belongs to the same RNA and the same slice as the currently camped cell, and the related implementation manner is as follows:
  • the network side device broadcasts information about the RNA of the cell currently camped by the UE and the information of the slice, the neighbor cell list belonging to the RNA region, other surrounding RNA regions, and the neighboring cell belonging to the slice and other surrounding slices. List.
  • the RAN area ID of the RNA to which the Inactive UE belongs includes two, that is, ⁇ RAN area ID 1, RAN area ID 2 ⁇ , and the belonging slice is slice 1.
  • the inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1, and the associated slice is slice 1.
  • Cell 1 is surrounded by a neighboring cell: cell 2, whose RNA belongs to RAN area ID 1, and its slice belongs to slice 1; cell 3, whose RNA belongs to RAN area ID 1, and its slice belongs to slice 2; cell 4, whose RNA belongs to RAN area ID 2, whose slice belongs to slice 2; cell 5, whose RNA belongs to RAN area ID3, whose slice belongs to slice1; cell 6, whose RNA belongs to RAN area ID 3, and whose slice belongs to slice 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the associated RAN area ID 1, and the neighbor cell list ⁇ cell 2, cell 3 ⁇ belonging to the RAN area ID 1, and the neighbor cell list belonging to the surrounding RAN area ID 2 ⁇ cell 4 ⁇ , the neighbor cell list belonging to the surrounding RAN area ID 3 is ⁇ cell 5, cell6 ⁇ ; the neighbor cell list ⁇ cell 2, cell 5 ⁇ belonging to slice 1, and the neighbor cell list belonging to slice 2 ⁇ cell 3, cell 4 ⁇ , a list of neighbor cells belonging to slice 3 ⁇ cell 6 ⁇ .
  • Step 2 When the Inactive UE camps on the cell 1, performing cell reselection, first determining, according to the neighbor cell list, that the RNA belongs to the RAN area ID 1 and the slice belonging to the slice 1 is the cell 1 and the cell 2, so based on the R criterion, A cell is selected between cell 1 and cell 2 for camping. If both cell 1 and cell 2 do not satisfy the R criterion, then in cell 5 where cell 7 belongs to RAN area ID 1 (cell 2 has been excluded), RNA belongs to cell 4 of RAN area ID2, and slice belongs to slice 1. A cell is selected for camping based on the R criterion. If cell 3, cell 4, and cell 5 still fail to satisfy the R criterion, cell reselection is performed according to the idle cell reselection rule, for example, finally reselected to cell 6 for camping.
  • the network side device broadcasts information about the RNA of the cell currently camped by the UE and the information of the slice, the neighbor cell list belonging to the RNA region, other surrounding RNA regions, and the neighboring cell belonging to the slice and other surrounding slices. List. There is also offset1 set for the same RNA belonging to the current camping cell, and offset2 set for the same slice belonging to the current camping cell.
  • the RAN area ID of the RNA to which the Inactive UE belongs includes two, that is, ⁇ RAN area ID 1, RAN area ID 2 ⁇ , and the belonging slice is slice 1.
  • the inactive UE resides in the cell 1, and the cell 1 belongs to the RAN area ID 1, and the associated slice is slice 1.
  • Cell 1 is surrounded by a neighboring cell: cell 2, whose RNA belongs to RAN area ID 1, and its slice belongs to slice 1; cell 3, whose RNA belongs to RAN area ID 1, and its slice belongs to slice 2; cell 4, whose RNA belongs to RAN area ID 2, whose slice belongs to slice 2; cell 5, whose RNA belongs to RAN area ID3, whose slice belongs to slice1; cell 6, whose RNA belongs to RAN area ID 3, and whose slice belongs to slice 3.
  • Step 1 The network side device broadcasts the system information of the cell 1, including the associated RAN area ID 1, and the neighbor cell list belonging to the RAN area ID 1 is ⁇ cell 2, cell 3 ⁇ , and the neighboring cell belonging to the surrounding RAN area ID 2
  • the list is ⁇ cell 4 ⁇ , the neighbor cell list belonging to the surrounding RAN area ID 3 is ⁇ cell 5, cell6 ⁇ ;
  • the neighbor cell list belonging to slice 1 is ⁇ cell 2, cell 5 ⁇ , and the neighbor cell list belonging to slice 2 is ⁇ Cell 3, cell 4 ⁇ , the neighbor cell list belonging to slice 3 is ⁇ cell 6 ⁇ .
  • Step 2 When the Inactive UE camps on the cell 1 and performs cell reselection, the priority value of the cell 1-cell 6 is calculated according to the R criterion and the priority offset. For example, the better the signal, the larger the priority value.
  • the cell 1 , cell 2, cell 3 and cell 4 belonging to the RAN area ID 1 and belonging to the RAN area ID 2 are subjected to the positive correction of the priority value according to the offset 1.
  • the priority value of the cell 2, cell 5 belonging to slice 1 is forward corrected according to offset2.
  • some embodiments of the present disclosure further provide a user equipment, as shown in FIG. 3, including:
  • the receiving module 31 is configured to receive system information of a cell broadcast, where the system information carries information about the RNA and/or slice of the RNA to which the cell belongs;
  • the selecting module 32 is configured to preferentially select, as the target cell, a cell that is the same as the RNA to which the current camping cell of the user equipment belongs and/or the slice is the same when the cell reselection needs to be performed;
  • the resident module 33 is configured to camp on the target cell.
  • the user equipment of some embodiments of the present disclosure can preferentially prioritize cells that do not need to perform RNA update and/or slice update when reselecting cells, thereby reducing the update frequency of RNA and/or slices, and thus The unnecessary signaling overhead generated by cell reselection is effectively reduced, and the user experience is guaranteed.
  • the user equipment of some embodiments of the present disclosure may select one target cell to camp in the candidate cell, where the candidate cell is obviously a cell that the user equipment can scan, and may be one or multiple, generally The following includes the current camped cell of the user equipment and the neighboring cell adjacent to the currently camped cell.
  • the foregoing receiving module 31 of some embodiments of the present disclosure specifically receives the system information broadcasted by the cell, obtains information about the RNA and/or the slice of the RNA to which the current camping cell belongs, and the neighboring cell adjacent to the currently camped cell. Information about the RNA to which it belongs and/or slice information;
  • the selecting module specifically selects, in the candidate cell, a cell that is the same as the RNA to which the current camping cell of the user equipment belongs and/or the same slice, and the candidate cell includes the current camping cell. And the neighboring cell.
  • the receiving module 31 of some embodiments of the present disclosure may obtain information about the RNA to which the current camping cell belongs and/or information of the RNA to which the neighboring cell belongs in two ways;
  • the receiving module 31 of some embodiments of the present disclosure includes:
  • a first receiving submodule configured to receive system information of a current camped cell broadcast, obtain information about information and/or slice of the RNA to which the currently camped cell belongs from the system information broadcasted by the current camping cell, and scan and The neighboring cell that is currently camped on the cell, and receives the system information broadcast by the neighboring cell, and obtains information about the RNA and/or the slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • the receiving module 31 of some embodiments of the present disclosure includes:
  • a second receiving submodule configured to receive system information of a current camped cell broadcast, obtain, from the system information broadcasted by the current camping cell, information about the RNA and/or slice of the RNA to which the currently camped cell belongs, and The information of the RNA and/or the slice of the RNA to which the neighboring cell adjacent to the current cell belongs.
  • the current camping cell includes at least: a RAN area ID of the RNA to which the current camping cell belongs, and the information of the RNA to which the neighboring cell belongs includes at least: a RAN area ID of the RNA to which the neighboring cell belongs;
  • the current camped cell belongs to The information of the slice includes at least the ID of the slice to which the current camping cell belongs, and the information of the slice to which the neighboring cell belongs includes at least the ID of the slice to which the neighboring cell belongs;
  • the information of the RNA to which the current camping cell belongs includes at least: currently camping The RAN area ID of the RNA to which the cell belongs; the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighbor cells belonging to the same RNA as the current camping cell and/or a neighboring cell belonging to a different RNA from the current camping cell a second list and/or a third list of neighboring cells to be sorted by RNA;
  • the information of the slice to which the current camping cell belongs includes at least: currently camping The ID of the slice to which the cell belongs; the information of the slice to which the neighboring cell belongs includes at least: a fourth list of neighbor cells belonging to the same slice ID as the current camping cell and/or a neighboring cell belonging to a different slice ID of the current camping cell A fifth list and/or a sixth list of neighbor cells sorted by slice.
  • the selection module 32 of some embodiments of the present disclosure next selects, in the candidate cell, the same cell as the RNA to which the current camping cell of the user equipment belongs, as the target cell.
  • the selection module 32 will be described in detail below.
  • the selection module 32 of some embodiments of the present disclosure has two ways to preferentially select cells of the same RNA and/or the same slice to reside.
  • the selection module 32 of some embodiments of the present disclosure includes a first selection sub-module, the first selection sub-module further comprising:
  • a first selecting unit configured to select, from a candidate cell that belongs to the same RNA as the current camping cell, a cell that meets a preset first reselection condition as a target cell; if the preset first reselection is not selected
  • the target cell of the condition attempts to select a cell that satisfies the preset second reselection condition as the target cell from the candidate cells belonging to different RNAs from the current camping cell.
  • a second selecting unit configured to select, from the candidate cell that belongs to the same slice as the current camping cell, a cell that meets the preset third reselection condition as the target cell; if the third reselection is not selected
  • the target cell of the condition attempts to select a cell that satisfies the preset fourth reselection condition as the target cell from the candidate cells that belong to different slices from the current camping cell.
  • a third selecting unit configured to select, according to a candidate cell that belongs to the same RNA and the same slice as the current camping cell, a cell that meets a preset fifth reselection condition as a target cell;
  • the target cell of the fifth reselection condition is from the candidate cell belonging to the same RNA as the current camping cell and belonging to different slices, and/or the candidate cell belonging to the same slice and belonging to different RNAs Trying to select a cell that meets the preset sixth reselection condition as the target cell; if the target cell that satisfies the preset sixth reselection condition is not selected, it belongs to a different RNA from the current camping cell and belongs to a different slice.
  • an attempt is made to select a cell that satisfies the preset seventh reselection condition as the target cell.
  • a preferred scheme of the first selection sub-module of some embodiments of the present disclosure is to preferentially belong to the same RNA and the same slice from the current camping cell.
  • the target cell is selected in the candidate cell, and if not selected, the target cell is selected from the candidate cells that belong to the same RNA but are sliced differently from the current camping cell, and/or the same slice but the RNA is different, if still not selected Then, the target cell is selected lastly from other candidate cells whose RNA and the slice are different from the current camping cell.
  • Another priority selection scheme may be to set a priority offset, and determine a priority of each candidate cell based on the priority offset, wherein the priority offset may ensure that the same RNA and the current camping cell belong to the same RNA and /or the candidate cell of the same slice has a higher priority than other candidate cells, so that in the selection process, there is a higher probability of becoming the target cell. That is, the selection module 32 of some embodiments of the present disclosure further includes:
  • the second selection sub-module is used to:
  • Determining a priority of each candidate cell based on a preset rule correcting a priority of a candidate cell belonging to the same RAN area ID as the current camping cell based on an RNA priority offset of the candidate cell, and/or Performing a reverse correction on the priority of the candidate cell belonging to the different RAN area ID of the current camping cell;
  • a cell with the highest priority is selected as the target cell.
  • aspects of some embodiments of the present disclosure are also capable of allowing the user equipment to select as many cells as possible that do not require RNA updates and/or do not require slice updates.
  • the user equipment of some embodiments of the present disclosure may further include:
  • a third receiving submodule configured to acquire an RNA priority offset of the candidate cell and/or the slice priority offset from the system information broadcasted by the current camping cell.
  • the user equipment of some embodiments of the present disclosure may acquire the RNA priority offset of the candidate cell and/or the slice priority offset from the network side, thereby realizing real-time updating of the priority offset.
  • the user equipment of some embodiments of the present disclosure corresponds to the above-described cell reselection method applied to the user equipment provided by the present disclosure, and thus the same technical effect can be achieved.
  • some embodiments of the present disclosure further provide a network side device, as shown in FIG. 4, including:
  • the sending module 41 is configured to send system information of the cell, where the system information carries information about the RNA to which the cell belongs and/or information of a slice to which the cell belongs.
  • the network side device of some embodiments of the present disclosure may indicate, by using the broadcasted system information, that the foregoing user equipment of the present disclosure preferentially selects a cell that does not need to perform RNA update and/or slice update to perform camping when performing cell reselection. Therefore, the frequency of RNA update and/or slice update of the user equipment can be effectively reduced, thereby effectively reducing unnecessary signaling overhead generated by cell reselection and ensuring the user experience.
  • the information of the RNA to which the cell belongs to at least the RAN area ID of the RNA to which the cell belongs, and the information of the slice to which the cell belongs includes at least: the cell to which the cell belongs.
  • the user equipment may obtain information of information and/or slice of the RNA to which the currently camped cell belongs.
  • the user equipment obtains information according to the RNA of the neighboring cell that can be adjacent to the cell in which it is currently camped. / or sliced information.
  • some embodiments of the present disclosure may further carry information about the RNA to which the neighboring cell adjacent to the cell belongs.
  • the user can directly obtain its current camping cell and the current camping directly from the system information broadcasted by the current camping cell.
  • RNA information and slice information of neighboring cells adjacent to the cell are examples of neighboring cells adjacent to the cell.
  • the information of the RNA to which the neighboring cell belongs includes at least: a first list of neighbor cells belonging to the same RNA as the cell and/or a second list of neighbor cells belonging to different cells of the cell and/or classified according to RNA a third list of the neighboring cells;
  • the current cell 1 of the user equipment belongs to the RAN area ID 1, the neighboring cell cell 2, and belongs to the RAN area ID 1; the neighboring cell cell 3 belongs to the RAN area ID 1; the neighboring cell cell 4, It belongs to RAN area ID 2; neighboring cell cell 5 belongs to RAN area ID 3.
  • the RAN area ID of the current cell 1 is RAN area ID1, the first list may be ⁇ cell2, cell3 ⁇ , the second list may be ⁇ cell4, cell5 ⁇ , and the third list is multiple, including the RAN area.
  • ID 1 ⁇ cell 1, cell 2, cell 3 ⁇ , RAN area ID 2 ⁇ cell 4 ⁇ , RAN area ID 3 ⁇ cell 5 ⁇ .
  • the user equipment can determine which neighboring cells are the same as the RAN to which the current camping cell belongs, which neighboring cells are different from the RAN to which the current camping cell belongs, and even each candidate cell is specific. Corresponding RAN area ID.
  • the information of the slice to which the foregoing neighboring cell belongs in some embodiments of the present disclosure includes at least: a fourth list of neighboring cells belonging to the same slice ID as the cell and/or a neighboring cell belonging to a different slice ID of the cell. A fifth list and/or a third list of the neighbor cells sorted by slice.
  • the above-mentioned system information of some embodiments of the present disclosure further carries: an RNA priority offset and/or a slice priority offset, so that the user equipment can be based on the RNA priority during the cell reselection process.
  • the quantity and/or slice priority offsets are modified to prioritize the candidate cells, so that cells that do not need to perform RNA update and slice update can be selected to camp as much as possible.
  • the network side device of some embodiments of the present disclosure corresponds to the above-described cell reselection method applied to the network side device provided by the present disclosure, and thus the same technical effect can be achieved.
  • the present disclosure also provides a readable storage medium storing a computer program, which when executed by a processor, may include the following steps:
  • the system information carrying information and/or slice information of the RNA to which the cell belongs;
  • a cell with the same and/or the same slice as the RNA to which the current camping cell of the user equipment belongs is preferentially selected as the target cell;
  • the step of the processor performing system information for receiving the cell broadcast further includes:
  • Receiving system information of the currently camped cell broadcast acquiring information about the information and/or the slice of the RNA to which the current camping cell belongs from the system information broadcasted by the current camping cell, and scanning the neighboring cell adjacent to the currently camped cell a neighboring cell, and receiving system information broadcast by the neighboring cell, and acquiring information about the RNA and/or the slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • Receiving system information of the currently camped cell broadcast acquiring, from the system information broadcasted by the current camping cell, information of the RNA and/or slice of the RNA to which the current camping cell belongs, and a neighbor adjacent to the currently camped cell Information about the RNA and/or slice of the RNA to which the cell belongs.
  • step of the processor performing the preferential selection of the same and/or the same cell as the target cell of the current camping cell of the user equipment as the target cell further includes:
  • the candidate cell that belongs to the same slice as the current camping cell attempts to select a cell that meets the preset third reselection condition as the target cell; if the target cell that meets the preset third reselection condition is not selected, Then, from a candidate cell that belongs to a different slice from the current camping cell, an attempt is made to select a cell that satisfies a preset fourth reselection condition as a target cell.
  • a candidate cell that belongs to the same RNA and the same slice as the current camping cell attempts to select a cell that meets a preset fifth reselection condition as a target cell; if it fails to select a condition that satisfies a preset fifth reselection condition
  • the target cell in a candidate cell belonging to the same RNA as the current camping cell and belonging to different slices, and/or a candidate cell belonging to the same slice and belonging to different RNAs, attempts to select one to satisfy the pre-preparation a cell with a sixth reselection condition is used as a target cell; if a target cell that satisfies a preset sixth reselection condition is not selected, from a candidate cell that belongs to a different RNA from the current camping cell and belongs to a different slice, Try to select a cell that meets the preset seventh reselection condition as the target cell.
  • the step of the processor performing the preferential selection of the same cell and/or the same cell as the target cell of the current camping cell of the user equipment as the target cell may further include:
  • a cell with the highest priority is selected as the target cell.
  • some embodiments of the present disclosure further provide a user equipment, as shown in FIG. 5, including:
  • Bus interface 53 may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 52 and various circuits of memory represented by memory 51.
  • the architecture of bus interface 53 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore will not be further described herein.
  • transceiver 54 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the memory 51 stores a computer program
  • the processor 52 reads the computer program of the memory 51 to execute:
  • the system information carrying information and/or slice information of the RNA to which the cell belongs;
  • a cell with the same and/or the same slice as the RNA to which the current camping cell of the user equipment belongs is preferentially selected as the target cell;
  • the processor 52 based on the computer program, performing the step of receiving system information of the cell broadcast further includes:
  • Receiving system information of the currently camped cell broadcast acquiring information about the information and/or the slice of the RNA to which the current camping cell belongs from the system information broadcasted by the current camping cell, and scanning the neighboring cell adjacent to the currently camped cell a neighboring cell, and receiving system information broadcast by the neighboring cell, and acquiring information about the RNA and/or the slice of the RNA to which the neighboring cell belongs from the system information broadcast by the neighboring cell;
  • Receiving system information of the currently camped cell broadcast acquiring, from the system information broadcasted by the current camping cell, information of the RNA and/or slice of the RNA to which the current camping cell belongs, and a neighbor adjacent to the currently camped cell Information about the RNA and/or slice of the RNA to which the cell belongs.
  • the processor 52 based on the computer program, performing the step of preferentially selecting the same cell and/or the same cell as the target cell of the current camping cell of the user equipment as the target cell, further includes:
  • the candidate cell that belongs to the same slice as the current camping cell attempts to select a cell that meets the preset third reselection condition as the target cell; if the target cell that meets the preset third reselection condition is not selected, Then, from a candidate cell that belongs to a different slice from the current camping cell, an attempt is made to select a cell that satisfies a preset fourth reselection condition as a target cell.
  • a candidate cell that belongs to the same RNA and the same slice as the current camping cell attempts to select a cell that meets a preset fifth reselection condition as a target cell; if it fails to select a condition that satisfies a preset fifth reselection condition
  • the target cell in a candidate cell belonging to the same RNA as the current camping cell and belonging to different slices, and/or a candidate cell belonging to the same slice and belonging to different RNAs, attempts to select one to satisfy the pre-preparation a cell with a sixth reselection condition is used as a target cell; if a target cell that satisfies a preset sixth reselection condition is not selected, from a candidate cell that belongs to a different RNA from the current camping cell and belongs to a different slice, Try to select a cell that meets the preset seventh reselection condition as the target cell.
  • some embodiments of the present disclosure may perform the step of preferentially selecting a cell that is the same as the RNA to which the current camping cell of the user equipment belongs and/or the same slice as the target cell.
  • a cell with the highest priority is selected as the target cell.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

L'invention concerne un procédé de resélection de cellule, un équipement d'utilisateur, et un dispositif côté réseau. Le procédé de resélection de cellule appliqué à un équipement d'utilisateur consiste à : recevoir des informations système diffusées par une cellule, les informations système comprenant des informations relatives à un RNA et/ou à une tranche auxquels la cellule appartient ; lorsqu'une resélection de cellule est requise, sélectionner de préférence une cellule appartenant au même RNA et/ou à la même tranche que la cellule où l'équipement d'utilisateur actuel est en résidence en tant qu'une cellule cible ; et résider dans la cellule cible.
PCT/CN2018/077886 2017-03-24 2018-03-02 Procédé de resélection de cellule, équipement d'utilisateur, et dispositif côté réseau WO2018171408A1 (fr)

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