WO2018195825A1 - 小区选择或重选方法、装置及系统 - Google Patents

小区选择或重选方法、装置及系统 Download PDF

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Publication number
WO2018195825A1
WO2018195825A1 PCT/CN2017/082050 CN2017082050W WO2018195825A1 WO 2018195825 A1 WO2018195825 A1 WO 2018195825A1 CN 2017082050 W CN2017082050 W CN 2017082050W WO 2018195825 A1 WO2018195825 A1 WO 2018195825A1
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WO
WIPO (PCT)
Prior art keywords
cell
candidate cells
candidate
terminal
priority
Prior art date
Application number
PCT/CN2017/082050
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English (en)
French (fr)
Inventor
江小威
Original Assignee
北京小米移动软件有限公司
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.)
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2017/082050 priority Critical patent/WO2018195825A1/zh
Priority to CN201780000262.XA priority patent/CN107223350B/zh
Publication of WO2018195825A1 publication Critical patent/WO2018195825A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a cell selection or reselection method, apparatus, and system.
  • Network slicing technology allows the network to be divided into multiple slices, and different types of traffic are transmitted in different network slices without interfering with each other.
  • services can be classified into the following three types: enhanced mobile broadband (eMBB) services, mass machine-type communication (mMTC) services, and high-reliability low-latency communication ( Ultra-relaible and Low Latency Communication, URLLC) business.
  • eMBB enhanced mobile broadband
  • mMTC mass machine-type communication
  • URLLC Ultra-reliability low-latency communication
  • the above three types of services are divided into three network slices.
  • the charging policy, security policy, and QoS (Quality of Service) policies of each network slice may be different. Large-scale services appear in one network slice. Congestion does not affect the normal operation of services in other network slices.
  • Embodiments of the present disclosure provide a cell selection or reselection method, apparatus, and system.
  • the technical solution is as follows:
  • a cell selection or reselection method comprising:
  • the cell corresponding to the base station is determined as the highest priority candidate cell
  • the method further includes:
  • the slice information further includes a threshold offset value corresponding to each of the network slices
  • the selecting according to the priority of all candidate cells, sequentially selecting or reselecting a target cell from the all candidate cells, including:
  • the signal power of the selected cell is smaller than a threshold corresponding to the selected cell, starting from the step of selecting a cell from all the candidate cells according to the priority of all the candidate cells .
  • the method further includes:
  • a target cell camping is reselected from the all candidate cells, determining a priority order between the n highest priority candidate cells according to the indication information of the base station.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • the method further includes:
  • the method further includes:
  • a target cell camping is selected from the all candidate cells, determining a priority order between the m highest priority candidate cells according to the configuration information of the terminal;
  • a target cell camping is selected from the all candidate cells, determining a priority order between the m highest priority candidate cells according to the indication information of the base station.
  • a cell selection or reselection method comprising:
  • slice information where the slice information includes an identifier of at least one network slice
  • the terminal Broadcasting the slice information to the terminal, where the terminal is configured to determine, according to the network slice configured by the terminal, the cell corresponding to the base station as the highest priority candidate cell, and according to all candidates The priority of the cell, in which one target cell camps are selected or reselected in order from all of the candidate cells, wherein the all candidate cells include the highest priority candidate cells.
  • the broadcasting the slice information to the terminal includes:
  • the slice information further includes a threshold offset value corresponding to each of the network slices.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • a cell selection or reselection apparatus comprising:
  • the first acquiring module is configured to acquire the slice information sent by the base station, where the slice information includes an identifier of the at least one network slice;
  • a first determining module configured to determine, when the slice information includes a network slice configured by the terminal, a cell corresponding to the base station as a candidate cell with the highest priority
  • the selecting module is configured to select or reselect one target cell camp from all of the candidate cells in sequence according to priorities of all candidate cells, wherein the all candidate cells include the highest priority candidate cell.
  • the device further includes:
  • a second acquiring module configured to acquire a threshold offset value corresponding to the candidate cell
  • a second determining module configured to determine, according to the threshold offset value and the preset threshold value, the threshold value corresponding to the candidate cell, where a threshold value corresponding to the candidate cell is used It is determined whether the candidate cell is used as the target cell.
  • the slice information further includes a threshold offset value corresponding to each of the network slices
  • the second acquiring module is configured to acquire, according to the slice information, a threshold offset value corresponding to the network slice configured by the terminal, and serve as a threshold offset value corresponding to the candidate cell.
  • the selection module is configured to:
  • the signal power of the selected cell is smaller than a threshold corresponding to the selected cell, starting from the step of selecting a cell from all the candidate cells according to the priority of all the candidate cells .
  • the apparatus further includes:
  • a third determining module configured to determine a priority order between the n highest priority candidate cells according to the configuration information of the terminal if a target cell camping is selected from the all candidate cells;
  • a fourth determining module configured to determine a priority order between the n highest priority candidate cells according to the indication information of the base station, if a target cell camping is selected from the all candidate cells.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • the apparatus further includes:
  • a fifth determining module configured to determine a priority order between the n highest priority candidate cells according to a priority of the network slice configured by the terminal in each acquired slice information.
  • the device further includes:
  • a third determining module configured to determine a priority order between the m highest priority candidate cells according to the configuration information of the terminal if a target cell camping is selected from the all candidate cells;
  • a fourth determining module configured to determine a priority order between the m highest priority candidate cells according to the indication information of the base station, if a target cell camping is selected from the all candidate cells.
  • a cell selection or reselection apparatus comprising:
  • a generating module configured to generate slice information, where the slice information includes an identifier of at least one network slice
  • a broadcast module configured to broadcast the slice information to a terminal, where the terminal is configured to determine, as a highest priority candidate, a cell corresponding to the base station, if the slice information includes a network slice configured by the terminal a cell, and selecting or reselecting one target cell to camp from the all candidate cells in sequence according to priorities of all candidate cells, where all candidate cells include the highest priority candidate cell.
  • the broadcast module is configured to broadcast a minimum system message minimum SI to the terminal, where the minimum SI carries the slice information.
  • the slice information further includes a threshold offset value corresponding to each of the network slices.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • a cell selection or reselection system comprising: a terminal and a base station;
  • the terminal includes a cell selection or reselection device as provided by the third aspect and any of the alternative designs;
  • the base station includes a cell selection or reselection device as provided by the fourth aspect and any of its alternative designs.
  • a cell selection or reselection apparatus comprising:
  • a memory for storing executable instructions of the processor
  • processor is configured to:
  • the cell corresponding to the base station is determined as the highest priority candidate cell
  • a cell selection or reselection apparatus comprising:
  • a memory for storing executable instructions of the processor
  • processor is configured to:
  • slice information where the slice information includes an identifier of at least one network slice
  • the terminal Broadcasting the slice information to the terminal, where the terminal is configured to determine, according to the network slice configured by the terminal, the cell corresponding to the base station as the highest priority candidate cell, and according to all candidates The priority of the cell, in which one target cell camps are selected or reselected in order from all of the candidate cells, wherein the all candidate cells include the highest priority candidate cells.
  • the base station broadcasts the slice information to the terminal by the base station.
  • the terminal determines that the slice information sent by the base station includes the network slice configured by the terminal, the terminal determines the cell corresponding to the base station as the highest priority candidate cell, and then according to the priorities of all the candidate cells. Selecting or reselecting a target cell from all candidate cells in order; thereby providing a technical solution for implementing cell selection or reselection after introducing network slice technology.
  • the base station does not need to broadcast all the network slices supported by the corresponding cell, and the base station only broadcasts the network slice supported by the corresponding cell, thereby reducing the data volume of the broadcast message of the base station, and It helps to save the power consumption of the terminal, and can achieve the effect of controlling the terminal to preferentially select or reselect to a certain cell in the network side.
  • FIG. 1 is a schematic diagram of an application scenario according to an exemplary embodiment
  • FIG. 2 is a flowchart of a cell selection or reselection method according to an exemplary embodiment
  • FIG. 3 is a block diagram of a cell selection or reselection apparatus according to an exemplary embodiment
  • FIG. 4 is a block diagram of a cell selection or reselection apparatus according to another exemplary embodiment
  • FIG. 5 is a schematic structural diagram of a base station according to an exemplary embodiment
  • FIG. 6 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • the network architecture and the service scenario described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation of the technical solutions provided by the embodiments of the present disclosure.
  • the evolution of the new business scenario and the technical solution provided by the embodiments of the present disclosure are equally applicable to similar technical problems.
  • FIG. 1 is a schematic diagram of an application scenario according to an exemplary embodiment.
  • the application scenario includes: a plurality of base stations 110 and terminals 120. Each base station 110 is deployed in a RAN (Radio Access Network) 10.
  • RAN Radio Access Network
  • the number of terminals 120 is usually multiple, and one or more terminals 120 may be distributed in a cell managed by each base station 110.
  • the target base station may be any one of the plurality of base stations 110.
  • the target base station is denoted by reference numeral 111.
  • the base station 110 and the terminal 120 communicate with each other through some air interface technology, for example, can communicate with each other through cellular technology.
  • the technical solutions described in the embodiments of the present disclosure may be applicable to an LTE (Long Term Evolution) system, and may also be applied to an LTE system subsequent evolution system, such as an LTE-A (LTE-Advanced) system, a 5G system (also referred to as NR (New Radio) system) and so on.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • 5G system also referred to as NR (New Radio) system
  • the terminal involved in the embodiments of the present disclosure may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment) , UE), mobile station (MS), terminal device, and the like.
  • User Equipment User Equipment
  • UE User Equipment
  • MS mobile station
  • terminals the devices mentioned above are collectively referred to as terminals.
  • the access network device in the RAN involved in the embodiment of the present disclosure may be a base station (BS), which is a device deployed in the RAN to provide a wireless communication function for the terminal.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices with base station functions may be different, for example, in an LTE system, called an evolved NodeB (eNB or eNodeB), in a 3G communication system. Medium, called Node B (Node B) and so on.
  • eNB evolved NodeB
  • Node B Node B
  • the name "base station” may change.
  • the foregoing apparatus for providing a wireless communication function to a terminal is collectively referred to as a base station or a BS.
  • the cell selects or reselects the cell, it is required to determine whether the network slice configured by itself is supported in the cell, so as to preferentially select or reselect the cell supporting the network slice configured by the terminal.
  • the base station broadcasts information indicating all the network slices supported by the corresponding cell
  • the terminal detects whether the network slice supported by the cell corresponding to the cell includes the network slice configured by the terminal. If the network slice supported by the cell corresponding to the base station includes the network slice configured by the terminal, the terminal raises the priority of the cell. Subsequently, the terminal preferentially selects or reselects a cell with a higher priority to camp according to the priority of each cell.
  • the cell selection or reselection method provided by the related art, since the base station needs to broadcast all network slices supported by its corresponding cell, and the number of network slices supported by one cell may be up to several hundred, which results in the data volume of the broadcast message of the base station. Larger, consuming a lot of transmission resources. In addition, since the network slice supported by the cell changes, the base station needs to update the broadcast message in real time, which causes the terminal to frequently receive the updated broadcast message and increase the power consumption of the terminal.
  • operators may only need certain network slices to have higher selection or reselection priorities.
  • an operator may deploy certain cells mainly for absorbing URLLC services, and The service establishes a network slice, and the operator naturally hopes that those terminals that only have the URLLC service can preferentially select or reselect to camp in the above cell.
  • the network slice used for transmitting the URLLC service can be regarded as a network slice supported by the cell.
  • the number of network slices that it mainly supports is not many (usually several), and The other network slices supported by the cell do not need to consider actively absorbing users. Therefore, the base station does not need to broadcast all the network slices supported by its corresponding cell, and the base station only broadcasts the network slice supported by the corresponding cell.
  • embodiments of the present disclosure provide a cell selection or reselection method, and an apparatus and system based on the method.
  • the base station does not need to broadcast all the network slices supported by the corresponding cell, and the base station only broadcasts the network slice supported by the corresponding cell, thereby reducing the data volume of the broadcast message of the base station, and It helps to save power consumption of the terminal, and can achieve the effect of controlling the terminal to preferentially select or reselect a certain cell to camp on the network side.
  • FIG. 2 is a flowchart of a cell selection or reselection method according to an exemplary embodiment. The method can be applied to the application scenario shown in FIG. 1. The method can include the following steps.
  • the base station In step 201, the base station generates slice information, where the slice information includes an identifier of at least one network slice.
  • the slice information is used to indicate a network slice that the terminal corresponding to the cell corresponding to the base station needs to be regarded as the highest priority candidate cell. That is, the slice information is used to indicate the network slice supported by the cell corresponding to the base station.
  • the network slice included in the slice information is a partial network slice supported by the cell corresponding to the base station, and not all network slices supported by the cell corresponding to the base station.
  • the cell corresponding to the base station supports a total of 100 network slices, and the slice information includes identifiers of five network slices.
  • the identifier of the network slice (Slice ID) is used to uniquely identify the network slice, and different network slices correspond to different identifiers.
  • the base station acquires, according to the target service that the corresponding cell is used for the transmission, the identifier of the network slice used to transmit the target service, where the slice information includes the identifier of the network slice used to transmit the target service.
  • the cell corresponding to the base station is used to transmit the URL LC service, and the base station obtains the identifier of the network slice used for transmitting the URLLC service, where the slice information includes the identifier of the network slice used for transmitting the URLLC service.
  • the identifiers of the network slices included in the slice information are stored in a list.
  • step 202 the base station broadcasts slice information.
  • the base station broadcasts a system information (SI), where the system message carries the slice information.
  • SI system information
  • the base station broadcasts minimum SI, and the minimum SI carries the slice information.
  • the minimum SI is sent by broadcast, and the other SI is sent after receiving the request from the terminal.
  • the minimum SI is used to transmit at least one of the following information: cell selection and access related information, RACH (Random Access Channel) information, scheduling information of other system messages, and the like.
  • step 203 the terminal acquires slice information sent by the base station.
  • the terminal acquires slice information sent by one or more base stations.
  • the terminal acquires a minimum SI sent by one or more base stations, and the minimum SI carries the slice information.
  • step 204 when the slice information sent by the base station includes the network slice configured by the terminal, the terminal determines the cell corresponding to the base station as the candidate cell with the highest priority.
  • the terminal determines the cell corresponding to the base station as the candidate cell with the highest priority; when the slice information sent by the base station does not include When the network is configured by the terminal, the terminal may determine whether the cell corresponding to the base station is used as the candidate cell, and the corresponding priority is determined when the cell corresponding to the base station is used as the candidate cell.
  • the priority of the candidate cell determines the order in which the terminal selects when selecting or reselecting.
  • the terminal preferentially selects a candidate cell with a high priority, and determines whether to camp on the target cell according to the relevant characteristics of the candidate cell.
  • the terminal may acquire the slice information sent by the multiple base stations, and it is possible to include the network slice configured by the terminal in the multiple slice information, the number of the highest priority candidate cells determined by the terminal may be one, or may be Multiple.
  • step 205 the terminal selects or reselects a target cell camp from all candidate cells in order according to the priorities of all candidate cells.
  • All candidate cells include the highest priority candidate cells.
  • the target cell is a cell selected by the terminal from all candidate cells, for example, the target cell is a cell corresponding to the target base station.
  • step 205 includes the following sub-steps:
  • Step 205a The terminal selects one cell from all candidate cells according to the priority of all candidate cells.
  • the terminal selects the cell with the highest priority from among the candidate cells that are not selected. For example, in the first selection, the terminal selects one cell with the highest priority among all candidate cells. If the second selection is needed later, the terminal selects one cell with the second highest priority among all candidate cells, and so on.
  • Step 205b the terminal determines whether the signal power of the selected cell is greater than a threshold corresponding to the selected cell; if yes, performing the following step 205c; if not, starting from step 205a again;
  • step 205c the terminal camps on the selected cell as the target cell.
  • the number of all candidate cells is three, and the priority of the above three candidate cells is from high to low: cell A, cell B, and cell C.
  • the terminal first selects the cell A, and determines whether the signal power of the cell A is greater than the threshold corresponding to the cell A; if yes, the cell A is used as the target cell; if not, the cell B is selected to determine the signal power of the cell B. Whether it is greater than the threshold corresponding to cell B, and so on.
  • the threshold value corresponding to the candidate cell is used to determine whether the candidate cell is the target cell to camp on.
  • the thresholds corresponding to different candidate cells are the same.
  • the thresholds corresponding to the candidate cells are preset thresholds.
  • the above preset threshold value can be preset according to actual needs.
  • different candidate cells have different threshold values.
  • the network side controls different candidate cells to correspond to different thresholds, so that the number of terminals absorbed by the cell can be controlled on the network side.
  • the slice information further includes a threshold offset value corresponding to each network slice.
  • the threshold offset values corresponding to each network slice may be the same or different.
  • the terminal acquires a threshold offset value corresponding to the candidate cell, for example, the terminal acquires a threshold offset value corresponding to the network slice configured by the terminal according to the slice information, and uses the threshold offset value corresponding to the candidate cell; after that, the terminal according to the threshold of the candidate cell The value is shifted and the preset threshold is used to determine a threshold corresponding to the candidate cell.
  • the terminal adds the preset threshold value to the threshold offset value corresponding to the candidate cell to obtain a threshold value corresponding to the candidate cell.
  • the terminal subtracts the threshold offset value corresponding to the candidate cell from the preset threshold value to obtain a threshold value corresponding to the candidate cell.
  • the threshold may be set only for cell reselection, or may be set for both cell selection and reselection. If the threshold is set for both cell selection and reselection, the threshold value set for the cell selection and the threshold value set for the cell reselection may be the same or different.
  • n the number of candidate cells of the highest priority.
  • n is a positive integer.
  • the terminal further needs to determine the priority order between the n highest priority candidate cells.
  • the terminal determines a priority order between the n highest priority candidate cells according to its own configuration information.
  • the foregoing configuration information may indicate that the terminal randomly determines the priority order between the n highest priority candidate cells.
  • the configuration information may be used to instruct the terminal to determine a priority order between the n highest priority candidate cells according to characteristics of a frequency, a standard, and the like of each candidate cell. If one target cell camps from all candidate cells is camped, the terminal determines a priority order among the plurality of highest priority candidate cells according to its own configuration.
  • the number of all candidate cells is four, which are cell A, cell B, cell C, and cell D, respectively.
  • the cell A and the cell B are the highest priority candidate cells, and the cell A and the cell B have higher priority than the cell C, and the cell C has a higher priority than the cell D.
  • the terminal can determine the priority order of the cell A and the cell B according to its own configuration. For example, the terminal determines that the priority of the cell B is higher than the priority of the cell A according to its own configuration, and finally determines that the priority of the four candidate cells is from high to low: cell B, cell A, cell C, and cell D. .
  • the terminal determines a priority order between the n highest priority candidate cells according to the indication information of the base station. If one target cell camps from all candidate cells is re-selected, the network side determines the priority order between the plurality of highest priority candidate cells. For example, the network side sends indication information to the UE through the other SI, where the indication information is used to indicate a priority order between the plurality of highest priority candidate cells.
  • the indication information explicitly indicates the priority order between the plurality of highest priority candidate cells; in another possible implementation manner, the indication information explicitly indicates different cell characteristics. (such as frequency, system, etc.) corresponding to different priority order.
  • the number of all candidate cells is four, which are cell A, cell B, cell C, and cell D, respectively.
  • the cell B and the cell C are the highest priority candidate cells, and the cell B and the cell C have higher priority than the cell A, and the cell A has a higher priority than the cell D.
  • the terminal may determine the priority order of the cell B and the cell C according to the indication information of the base station. For example, the terminal determines that the priority of the cell B is higher than the priority of the cell C according to the indication information of the base station, and finally determines that the priority of the four candidate cells is from high to low: cell B, cell C, cell A, and cell. D.
  • the base station broadcasts the slice information to the terminal, and when the terminal determines that the slice information sent by the base station includes the network slice configured by the terminal, the terminal determines the cell corresponding to the base station as The highest priority candidate cell, and then based on the priority of all candidate cells Level, selecting or reselecting one target cell from all candidate cells in order; thus providing a technical solution for implementing cell selection or reselection after introducing network slice technology.
  • the base station does not need to broadcast all the network slices supported by the corresponding cell, and the base station only broadcasts the network slice supported by the corresponding cell, thereby reducing the data volume of the broadcast message of the base station, and It helps to save the power consumption of the terminal, and can achieve the effect of controlling the terminal to preferentially select or reselect to a certain cell in the network side.
  • the slice information further includes information indicating a priority of each network slice.
  • the foregoing information is represented by a display manner, for example, a specific field is allocated in the slice information to indicate the priority of each network slice.
  • the foregoing information is expressed in an implicit manner, for example, an arrangement order of identifiers of each network slice, which reflects the priority of each network slice, for example, the highest priority in the forefront, ranked in the The last one has the lowest priority.
  • the base station can determine the corresponding priority according to the service used by each network slice for transmission.
  • the terminal determines the priority order between the n highest priority candidate cells according to the priority of the network slice configured by the terminal in each acquired slice information. For example, the terminal determines two high-priority candidate cells, which are cell A and cell B, respectively, and the network slice that the terminal has is slice 1, and it is assumed that the slice information sent by the base station corresponding to the cell A indicates that the priority of slice 1 is x.
  • the slice information sent by the base station corresponding to the cell B indicates that the priority of the slice 1 is y, and x is higher than y, and the terminal determines that the priority of the cell A is higher than the priority of the cell B.
  • the terminal further performs the following steps to further determine the priority order between the m highest priority candidate cells. If one target cell camps from all the candidate cells, the terminal determines the priority order between the m highest priority candidate cells according to the configuration information of the terminal. If one of the candidate cells is reselected from all the candidate cells, the terminal determines the priority order between the m highest priority candidate cells according to the indication information of the base station.
  • the above process is the same as the process of determining the priority order among the candidate cells of the highest priority, which is described in the embodiment of FIG. 1. Referring to the description in the embodiment of FIG. 1, this embodiment will not be described again.
  • the base station indicates the priority of each network slice in the slice information, so that the terminal preferentially selects the cell corresponding to the network slice with the high priority to camp. Thereby, the terminal that is absorbed by each cell is controlled on the network side.
  • steps related to the terminal in the foregoing embodiment may be separately implemented as a cell selection or reselection method on the terminal side
  • the step of the base station may be separately implemented as a cell selection or reselection method on the base station side.
  • FIG. 3 is a block diagram of a cell selection or reselection apparatus, according to an exemplary embodiment.
  • the device has a function of implementing the cell selection or reselection method on the terminal side, and the function may be implemented by hardware or by executing corresponding software by hardware.
  • the apparatus may include: a first acquisition module 310, a first determination module 320, and a selection module 330.
  • the first obtaining module 310 is configured to acquire slice information sent by the base station, where the slice information includes an identifier of at least one network slice.
  • the first determining module 320 is configured to determine, when the slice information includes a network slice configured by the terminal, a cell corresponding to the base station as a candidate cell with the highest priority.
  • the selecting module 330 is configured to select or reselect one target cell camp from all the candidate cells in order according to priorities of all candidate cells, where all candidate cells include the highest priority candidate cell .
  • the apparatus further includes: a second obtaining module and a second determining module.
  • the second acquiring module is configured to acquire a threshold offset value corresponding to the candidate cell.
  • a second determining module configured to determine, according to the threshold offset value and the preset threshold value, the threshold value corresponding to the candidate cell, where a threshold value corresponding to the candidate cell is used It is determined whether the candidate cell is used as the target cell.
  • the slice information further includes a threshold offset value corresponding to each of the network slices.
  • the second acquiring module is configured to acquire, according to the slice information, a threshold offset value corresponding to the network slice configured by the terminal, and serve as a threshold offset value corresponding to the candidate cell.
  • the selecting module is configured to: select one cell from all the candidate cells according to the priority of all the candidate cells; determine whether the signal power of the selected cell is greater than the selected cell a threshold value; if the signal power of the selected cell is greater than a gate corresponding to the selected cell And the value of the selected cell is the target cell; if the signal power of the selected cell is smaller than the threshold corresponding to the selected cell, Priority, the step of selecting one cell from all of the candidate cells begins execution.
  • the apparatus when the number n of the highest priority candidate cells is greater than 1, the apparatus further includes: a third determining module or a fourth determining module.
  • a third determining module configured to determine a priority order between the n highest priority candidate cells according to the configuration information of the terminal if a target cell camping is selected from the all candidate cells.
  • a fourth determining module configured to determine a priority order between the n highest priority candidate cells according to the indication information of the base station, if a target cell camping is selected from the all candidate cells.
  • the slice information further includes information indicating a priority of each of the network slices, when the number of the highest priority candidate cells When n is greater than 1, the apparatus further includes: a fifth determining module.
  • a fifth determining module configured to determine a priority order between the n highest priority candidate cells according to a priority of the network slice configured by the terminal in each acquired slice information.
  • the device further includes: a third determining module or a fourth determining module.
  • a third determining module configured to determine, according to configuration information of the terminal, a priority order between the candidate cells of the m highest priority, if one target cell camping is selected from the all candidate cells.
  • a fourth determining module configured to determine a priority order between the m highest priority candidate cells according to the indication information of the base station, if a target cell camping is selected from the all candidate cells.
  • FIG. 4 is a block diagram of a cell selection or reselection apparatus, according to another exemplary embodiment.
  • the device has a function of implementing a cell selection or reselection method on the base station side, and the function can be hard
  • the implementation of the software can also be implemented by hardware.
  • the apparatus can include a generation module 410 and a broadcast module 420.
  • the generating module 410 is configured to generate slice information, where the slice information includes an identifier of at least one network slice.
  • the broadcast module 420 is configured to broadcast the slice information to the terminal, where the terminal is configured to determine, according to the network slice configured by the terminal, the cell corresponding to the base station as the highest priority. a candidate cell, and selecting or reselecting one target cell camping from all of the candidate cells in order according to priorities of all candidate cells, wherein all candidate cells include the highest priority candidate cell.
  • the broadcast module is configured to broadcast a minimum system message minimum SI to the terminal, where the minimum SI carries the slice information.
  • the slice information further includes a threshold offset value corresponding to each of the network slices.
  • the slice information further includes information indicating a priority of each of the network slices.
  • An exemplary embodiment of the present disclosure also provides a cell selection or reselection system (or communication system), the system comprising: a terminal and a base station.
  • the terminal comprises a cell selection or reselection device as provided by the embodiment shown in FIG. 3 or based on any of the alternative embodiments provided by the embodiment shown in FIG.
  • the base station includes a cell selection or reselection device as provided by the embodiment shown in FIG. 4 or based on any of the alternative embodiments provided by the embodiment shown in FIG.
  • An exemplary embodiment of the present disclosure further provides a cell selection or reselection apparatus, which can implement the public The cell selection or reselection method on the terminal side provided.
  • the apparatus includes a processor and a memory for storing executable instructions of the processor. Wherein the processor is configured to:
  • the cell corresponding to the base station is determined as the highest priority candidate cell
  • the processor is further configured to:
  • the slice information further includes a threshold offset value corresponding to each of the network slices
  • the processor is configured to:
  • the processor is configured to:
  • the signal power of the selected cell is smaller than a threshold corresponding to the selected cell, starting from the step of selecting a cell from all the candidate cells according to the priority of all the candidate cells .
  • the processor is further configured to:
  • the indication information determines a priority order between the n highest priority candidate cells.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • the processor is further configured to:
  • the processor is further configured to:
  • a target cell camping is selected from the all candidate cells, determining a priority order between the m highest priority candidate cells according to the configuration information of the terminal;
  • a target cell camping is selected from the all candidate cells, determining a priority order between the m highest priority candidate cells according to the indication information of the base station.
  • An exemplary embodiment of the present disclosure further provides a cell selection or reselection apparatus capable of implementing a cell selection or reselection method on a base station side provided by the present disclosure.
  • the apparatus includes a processor and a memory for storing executable instructions of the processor.
  • the processor is configured to:
  • slice information where the slice information includes an identifier of at least one network slice
  • the terminal Broadcasting the slice information to the terminal, where the terminal is configured to determine, according to the network slice configured by the terminal, the cell corresponding to the base station as the highest priority candidate cell, and according to all candidates The priority of the cell, in which one target cell camps are selected or reselected in order from all of the candidate cells, wherein the all candidate cells include the highest priority candidate cells.
  • the processor is configured to:
  • the slice information further includes a threshold offset value corresponding to each of the network slices.
  • the slice information further includes information for indicating a priority of each of the network slices.
  • the base station and the terminal include corresponding hard functions for performing various functions.
  • Component structure and / or software module The embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed in the present disclosure. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a base station according to an exemplary embodiment.
  • Base station 500 includes a transmitter/receiver 501 and a processor 502.
  • the processor 502 can also be a controller, which is represented as "controller/processor 502" in FIG.
  • the transmitter/receiver 501 is configured to support transmission and reception of information between the base station and the terminal in the above embodiment, and to support communication between the base station and other network entities.
  • the processor 502 performs various functions for communicating with the terminal.
  • On the uplink an uplink signal from the terminal is received via an antenna, demodulated by a receiver 501 (e.g., demodulated into a baseband signal), and further processed by processor 502 to recover the terminal.
  • traffic data and signaling messages are processed by processor 502 and modulated by transmitter 501 (e.g., modulating a baseband signal into a high frequency signal) to produce a downlink signal that is transmitted to the terminal via an antenna.
  • transmitter 501 e.g., modulating a baseband signal into a high frequency signal
  • processor 502 is further configured to perform various steps of the base station side in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.
  • the base station 500 may further include a memory 503 for storing program codes and data of the base station 500.
  • the base station may further include a communication unit 504.
  • the communication unit 504 is configured to support the base station to communicate with other network entities, such as network devices in the core network.
  • the communication unit 504 can be an S1-U interface for supporting the base station to communicate with a Serving Gateway (S-GW); or the communication unit 504 can also be an S1-MME interface. It is used to support the base station to communicate with a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • FIG. 5 only shows a simplified design of base station 500.
  • the base station 500 can include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the embodiments of the present disclosure are protected by the embodiments of the present disclosure.
  • the base station 500 can include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the embodiments of the present disclosure are protected by the embodiments of the present disclosure.
  • the base station 500 can include any number of transmitters, receivers, processors, controllers, memories, communication units, etc.
  • FIG. 6 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • the terminal 600 includes a transmitter 601, a receiver 602, and a processor 603.
  • the processor 603 may also be a controller, and is represented as "controller/processor 603" in FIG.
  • the terminal 600 may further include a modem processor 605.
  • the modem processor 605 may include an encoder 606, a modulator 607, a decoder 608, and a demodulator 609.
  • the transmitter 601 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 602 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 606 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 607 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 609 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 608 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the terminal 600.
  • Encoder 606, modulator 607, demodulator 609, and decoder 608 may be implemented by a composite modem processor 605. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the terminal 600 does not include the modem processor 605, the above functions of the modem processor 605 may also be completed by the processor 603.
  • the processor 603 controls and manages the actions of the terminal 600 for performing the processing performed by the terminal 600 in the above-described embodiments of the present disclosure.
  • the processor 603 is further configured to perform various steps of the terminal side in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.
  • the terminal 600 may further include a memory 604 for storing program codes and data for the terminal 600.
  • the processor for performing the functions of the foregoing base station or terminal in the embodiment of the present disclosure may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application). -Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or perform various illustrative logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of the method or algorithm described in connection with the disclosure of the embodiments of the present disclosure may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the ASIC can be located in a base station or terminal.
  • the processor and the storage medium may also reside as a discrete component in a base station or terminal.
  • the functions described in the embodiments of the present disclosure can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.
  • the embodiment of the present disclosure further provides a computer storage medium for storing the computer software instructions for the base station described above, which includes a program designed to perform the cell selection or reselection method on the base station side.
  • the embodiment of the present disclosure further provides a computer storage medium for storing the above-mentioned computer software instructions for a terminal, which comprises a program designed to execute the cell selection or reselection method on the terminal side.
  • a plurality as referred to herein means two or more.
  • "and/or” describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.

Abstract

一种小区选择或重选方法、装置及系统，属于通信技术领域。所述方法包括：获取基站发送的切片信息，切片信息中包括至少一个网络切片的标识；当切片信息中包含有终端配置的网络切片时，将基站对应的小区确定为最高优先级的候选小区；根据全部候选小区的优先级，按序从全部候选小区中选择或重选一个目标小区驻留，其中，全部候选小区包括最高优先级的候选小区。本公开提供了一种在引入网络切片技术之后，实现小区选择或重选的技术方案。由于基站仅广播其对应小区重点支持的网络切片，因此减少基站的广播消息的数据量，且有助于节省终端的功耗，且能够达到在网络侧控制吸纳具有特定业务的终端优先选择或重选到某个小区驻留的效果。

Description

小区选择或重选方法、装置及系统 技术领域
本公开实施例涉及通信技术领域，特别涉及一种小区选择或重选方法、装置及系统。
背景技术
随着通信技术的发展，5G(5th Generation，第五代)系统中引入了网络切片(network slicing)技术。网络切片技术允许将网络划分为多个切片(slice)，不同类型的业务在不同的网络切片中传输，互相不干扰。
在5G系统中，可将业务划分为如下三种类型：增强型移动宽带(enhanced Mobile Broadband，eMBB)业务、大规模机器通信(massive Machine-type Communication，mMTC)业务和高可靠低时延通信(Ultra-relaible and Low Latency Communication，URLLC)业务。将上述三种类型的业务划分到三个网络切片中，各个网络切片的计费策略、安全策略、QoS(Quality of Service，服务质量)策略等都可能不同，一个网络切片中出现大规模的业务拥塞不会影响到其它网络切片中业务的正常运转。
在引入网络切片技术之后，终端如何实现小区选择或重选是亟待解决的问题。
发明内容
本公开实施例提供了一种小区选择或重选方法、装置及系统。所述技术方案如下：
根据本公开实施例的第一方面，提供了一种小区选择或重选方法，所述方法包括：
获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述方法还包括：
获取所述候选小区对应的门限偏移值；
根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值；
所述获取所述候选小区对应的门限偏移值，包括：
根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
可选地，所述根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，包括：
按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；
判断被选小区的信号功率是否大于所述被选小区对应的门限值；
若所述被选小区的信号功率大于所述被选小区对应的门限值，则将所述被选小区作为所述目标小区驻留；
若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
可选地，当所述最高优先级的候选小区的数量n大于1时，所述方法还包括：
若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序；
或者，
若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述方法还包括：
根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大于1的整数，且m小于或等于n，则所述方法还包括：
若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序；
或者，
若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
根据本公开实施例的第二方面，提供了一种小区选择或重选方法，所述方法包括：
生成切片信息，所述切片信息中包括至少一个网络切片的标识；
向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述向终端广播所述切片信息，包括：
向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
根据本公开实施例的第三方面，提供了一种小区选择或重选装置，所述装置包括：
第一获取模块，被配置为获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
第一确定模块，被配置为当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
选择模块，被配置为根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述装置还包括：
第二获取模块，被配置为获取所述候选小区对应的门限偏移值；
第二确定模块，被配置为根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值；
所述第二获取模块，被配置为根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
可选地，所述选择模块，被配置为：
按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；
判断被选小区的信号功率是否大于所述被选小区对应的门限值；
若所述被选小区的信号功率大于所述被选小区对应的门限值，则将所述被选小区作为所述目标小区驻留；
若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
可选地，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：
第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序；
或者，
第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：
第五确定模块，被配置为根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大 于1的整数，且m小于或等于n，则所述装置还包括：
第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序；
或者，
第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
根据本公开实施例的第四方面，提供了一种小区选择或重选装置，所述装置包括：
生成模块，被配置为生成切片信息，所述切片信息中包括至少一个网络切片的标识；
广播模块，被配置为向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述广播模块，被配置为向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
根据本公开实施例的第五方面，提供了一种小区选择或重选系统，所述系统包括：终端和基站；
所述终端包括如第三方面及其任一种可选设计提供的小区选择或重选装置；
所述基站包括如第四方面及其任一种可选设计提供的小区选择或重选装置。
根据本公开实施例的第六方面，提供了一种小区选择或重选装置，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
根据本公开实施例的第七方面，提供了一种小区选择或重选装置，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
生成切片信息，所述切片信息中包括至少一个网络切片的标识；
向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
本公开实施例提供的技术方案可以包括以下有益效果：
通过基站向终端广播切片信息，当终端确定基站发送的切片信息中包含有终端配置的网络切片时，终端将该基站对应的小区确定为最高优先级的候选小区，而后根据全部候选小区的优先级，按序从全部候选小区中选择或重选一个目标小区驻留；从而提供了一种在引入网络切片技术之后，实现小区选择或重选的技术方案。
另外，本公开实施例提供的方案中，基站并不需要广播其对应小区支持的所有网络切片，基站仅广播其对应小区重点支持的网络切片即可，从而减少基站的广播消息的数据量，且有助于节省终端的功耗，且能够达到在网络侧控制吸纳具有特定业务的终端优先选择或重选到某个小区驻留的效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种应用场景的示意图；
图2是根据一示例性实施例示出的一种小区选择或重选方法的流程图；
图3是根据一示例性实施例示出的一种小区选择或重选装置的框图；
图4是根据另一示例性实施例示出的一种小区选择或重选装置的框图；
图5是根据一示例性实施例示出的一种基站的结构示意图；
图6是根据一示例性实施例示出的一种终端的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本公开实施例描述的网络架构以及业务场景是为了更加清楚地说明本公开实施例的技术方案，并不构成对本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题，同样适用。
图1是根据一示例性实施例示出的一种应用场景的示意图。该应用场景包括：多个基站110和终端120。各个基站110部署在RAN(Radio Access Network，无线接入网)10中。
终端120的数量通常为多个，每一个基站110所管理的小区内可以分布一个或多个终端120。在本公开实施例中，目标基站可以是上述多个基站110中的任意一个基站。示意性地，如图1所示，目标基站以标号111表示。
基站110与终端120之间通过某种空口技术互相通信，例如可以通过蜂窝技术相互通信。本公开实施例描述的技术方案可以适用于LTE(Long Term Evolution，长期演进)系统，也可以适用于LTE系统后续的演进系统，如LTE-A(LTE-Advanced)系统、5G系统(也称为NR(New Radio)系统)等。
本公开实施例中，名词“网络”和“系统”经常交替使用，但本领域技术人员可以理解其含义。
本公开实施例所涉及到的终端可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端设备(terminal device)等等。为方便描述，上面提到的设备统称为终端。
本公开实施例所涉及到的RAN中的接入网设备可以是基站(Base Station，BS)，所述基站是一种部署在RAN中用以为终端提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE系统中，称为演进的节点B(evolved NodeB，eNB或eNodeB)，在3G通信系统中，称为节点B(Node B)等等。随着通信技术的演进，“基站”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端提供无线通信功能的装置统称为基站或BS。
在引入网络切片技术之后，终端在小区选择或重选时，需要判断自身配置的网络切片在小区内是否支持，以优先选择或重选支持终端配置的网络切片的小区。
在相关技术中，基站广播用于指示其对应的小区支持的所有网络切片的信息，终端获取到基站广播的上述信息之后，检测基站对应的小区支持的网络切片中是否包括终端配置的网络切片，若基站对应的小区支持的网路切片中包括终端配置的网络切片，则终端提升该小区的优先级。后续，终端按照各个小区的优先级，优先选择或重选优先级高的小区进行驻留。
相关技术提供的小区选择或重选方法，由于基站需要广播其对应小区支持的所有网路切片，而一个小区支持的网络切片的数量可能高达几百个，这就导致基站的广播消息的数据量较大，占用大量的传输资源。此外，由于小区支持的网络切片会发生变化，基站需要实时更新广播消息，这就导致终端需要频繁地接收到更新的广播消息，增加终端的功耗。
在实际应用中，运营商可能仅需要某些网络切片具有较高的选择或重选优先级。比如，运营商可能部署某些小区主要用于吸收URLLC业务，并为这样 的业务建立网络切片，运营商自然希望那些仅有URLLC业务的终端能够优先选择或重选到上述小区中驻留。针对上述情况，用于传输URLLC业务的网络切片可以看作是小区重点支持的网络切片，对于一个小区来说，其所重点支持的网络切片的数目不会很多(通常为几个)，而该小区支持的其它网络切片并不需要考虑主动吸纳用户，因此基站并不需要广播其对应小区支持的所有网络切片，基站仅广播其对应小区重点支持的网络切片即可。
为解决相关技术中存在的上述技术问题，本公开实施例提供了一种小区选择或重选方法，以及基于这个方法的装置和系统。在本公开实施例提供的方案中，基站并不需要广播其对应小区支持的所有网络切片，基站仅广播其对应小区重点支持的网络切片即可，从而减少基站的广播消息的数据量，且有助于节省终端的功耗，且能够达到在网络侧控制吸纳具有特定业务的终端优先选择或重选到某个小区驻留的效果。
下面将基于上面所述的本公开实施例涉及的共性方面，对本公开实施例进一步详细说明。
图2是根据一示例性实施例示出的一种小区选择或重选方法的流程图。该方法可应用于图1所示的应用场景中。该方法可以包括如下几个步骤。
在步骤201中，基站生成切片信息，切片信息中包括至少一个网络切片的标识。
切片信息用于指示需要将基站对应的小区视为最高优先级的候选小区的终端所具有的网络切片。也即，切片信息用于指示基站对应的小区重点支持的网络切片。在通常情况下，切片信息中包含的网络切片是基站对应的小区支持的部分网络切片，而非基站对应的小区支持的所有网络切片。例如，基站对应的小区总共支持100个网络切片，切片信息中包括其中5个网络切片的标识。
网络切片的标识(Slice ID)用于唯一标识网络切片，不同的网络切片对应不同的标识。
可选地，基站根据其对应小区主要用于传输的目标业务，获取用于传输目标业务的网络切片的标识，切片信息中包含上述用于传输目标业务的网络切片的标识。例如，基站对应的小区主要用于传输URLLC业务，则基站获取用于传输URLLC业务的网络切片的标识，切片信息中包含上述用于传输URLLC业务的网络切片的标识。
可选地，切片信息中包含的网络切片的标识以列表形式存储。
在步骤202中，基站广播切片信息。
可选地，基站广播系统消息(System Information，SI)，该系统消息中携带切片信息。
可选地，在系统消息分为minimum SI(最小系统消息)和other SI(其它系统消息)两种不同类型的情况下，基站广播minimum SI，该minimum SI中携带切片信息。minimum SI采用广播方式发送，other SI在接收到终端的请求之后发送。其中，minimum SI用于传输以下至少一项信息：小区选择与接入相关的信息、RACH(Random Access Channel，随机接入信道)信息、其它系统消息的调度信息，等等。
在步骤203中，终端获取基站发送的切片信息。
可选地，终端获取一个或多个基站发送的切片信息。例如，终端获取一个或多个基站发送的minimum SI，该minimum SI中携带切片信息。
在步骤204中，当基站发送的切片信息中包含有终端配置的网络切片时，终端将该基站对应的小区确定为最高优先级的候选小区。
对于任意一个基站来说，当该基站发送的切片信息中包含有终端配置的网络切片时，终端将该基站对应的小区确定为最高优先级的候选小区；当该基站发送的切片信息中未包含终端配置的网络切片时，终端可采用LTE系统中提供的方式确定是否将该基站对应的小区作为候选小区，以及在将该基站对应的小区作为候选小区的情况下确定相应的优先级。
候选小区的优先级决定了终端在选择或重选时的选择顺序。终端优先选择优先级高的候选小区，根据该候选小区的相关特性决定是否将其作为目标小区驻留。
由于终端可能获取到多个基站发送的切片信息，且有可能在多个切片信息中包含有终端配置的网络切片，因此终端确定出的最高优先级的候选小区的数量可能是一个，也有可能是多个。
在步骤205中，终端根据全部候选小区的优先级，按序从全部候选小区中选择或重选一个目标小区驻留。
全部候选小区包括最高优先级的候选小区。目标小区是终端从全部候选小区中选取的一个小区，例如目标小区是目标基站对应的小区。
在一个示例中，步骤205包括如下几个子步骤：
步骤205a，终端按照全部候选小区的优先级，从全部候选小区中选取一个小区；
在每一次选取时，终端从未被选取的候选小区中选择优先级最高的一个小区。例如，在第一次选取时，终端选取全部候选小区中优先级最高的一个小区，如后续需要第二次选取，则终端选取全部候选小区中优先级第二高的一个小区，以此类推。
步骤205b，终端判断被选小区的信号功率是否大于被选小区对应的门限值；若是，则执行下述步骤205c；若否，则再次从上述步骤205a开始执行；
步骤205c，终端将被选小区作为目标小区驻留。
例如，全部候选小区的数量为3个，且上述3个候选小区的优先级由高到低依次为：小区A、小区B和小区C。那么，终端首先选取小区A，判断小区A的信号功率是否大于小区A对应的门限值；若是，则将小区A作为目标小区驻留；若否，则选取小区B，判断小区B的信号功率是否大于小区B对应的门限值，以此类推。
候选小区对应的门限值用于判定是否将候选小区作为驻留的目标小区。在一个示例中，不同的候选小区对应的门限值相同，例如各个候选小区对应的门限值均为预设门限值。上述预设门限值可以根据实际需求预先设定。在另一个示例中，不同的候选小区对应的门限值不同。通过网络侧控制不同的候选小区对应不同的门限值，能够实现在网络侧对小区吸纳的终端数量进行控制。
可选地，切片信息中还包括各个网络切片对应的门限偏移值。各个网络切片对应的门限偏移值可以相同，也可以不同。终端获取候选小区对应的门限偏移值，例如终端根据切片信息获取终端配置的网络切片对应的门限偏移值，并作为候选小区对应的门限偏移值；之后，终端根据候选小区对应的门限偏移值和预设门限值，确定候选小区对应的门限值。在一个示例中，终端将预设门限值加上候选小区对应的门限偏移值，得到候选小区对应的门限值。在另一个示例中，终端将预设门限值减去候选小区对应的门限偏移值，得到候选小区对应的门限值。
在实际应用中，可以仅针对小区重选设定门限值，也可以针对小区选择和重选均设定门限值。若针对小区选择和重选均设定门限值，则针对小区选择设定的门限值与针对小区重选设定的门限值可以相同，也可以不同。
另外，假设最高优先级的候选小区的数量以n表示，n为正整数。当n大 于1时，终端还需进一步确定该n个最高优先级的候选小区之间的优先级顺序。
在一个示例中，若是从全部候选小区中选择一个目标小区驻留，则终端根据其自身的配置信息确定n个最高优先级的候选小区之间的优先级顺序。例如，上述配置信息可以指示终端随机确定上述n个最高优先级的候选小区之间的优先级顺序。又例如，上述配置信息可以指示终端根据各个候选小区的频率、制式等特征，确定上述n个最高优先级的候选小区之间的优先级顺序。若是从全部候选小区中选择一个目标小区驻留，则终端根据其自身配置确定多个最高优先级的候选小区之间的优先级顺序。
例如，全部候选小区的数量为4个，分别为小区A、小区B、小区C和小区D。其中，小区A和小区B为最高优先级的候选小区，小区A和小区B的优先级高于小区C，小区C的优先级高于小区D。那么，在小区选择时，终端可以根据其自身配置确定小区A和小区B的优先级顺序。例如，终端根据其自身配置确定小区B的优先级高于小区A的优先级，则最终确定上述4个候选小区的优先级由高到低依次为：小区B、小区A、小区C和小区D。
在另一个示例中，若是从全部候选小区中重选一个目标小区驻留，则终端根据基站的指示信息确定n个最高优先级的候选小区之间的优先级顺序。若是从全部候选小区中重选一个目标小区驻留，则由网络侧决定多个最高优先级的候选小区之间的优先级顺序。例如，网络侧通过other SI向UE下发指示信息，该指示信息用于指示多个最高优先级的候选小区之间的优先级顺序。在一种可能的实现方式中，指示信息中明确指示了多个最高优先级的候选小区之间的优先级顺序；在另一种可能的实现方式中，指示信息中明确指示了不同的小区特征(如频率、制式等特征)对应的不同优先级顺序。
例如，全部候选小区的数量为4个，分别为小区A、小区B、小区C和小区D。其中，小区B和小区C为最高优先级的候选小区，小区B和小区C的优先级高于小区A，小区A的优先级高于小区D。那么，在小区重选时，终端可以根据基站的指示信息确定小区B和小区C的优先级顺序。例如，终端根据基站的指示信息确定小区B的优先级高于小区C的优先级，则最终确定上述4个候选小区的优先级由高到低依次为：小区B、小区C、小区A和小区D。
综上所述，在本公开实施例提供的方案中，通过基站向终端广播切片信息，当终端确定基站发送的切片信息中包含有终端配置的网络切片时，终端将该基站对应的小区确定为最高优先级的候选小区，而后根据全部候选小区的优先 级，按序从全部候选小区中选择或重选一个目标小区驻留；从而提供了一种在引入网络切片技术之后，实现小区选择或重选的技术方案。
另外，本公开实施例提供的方案中，基站并不需要广播其对应小区支持的所有网络切片，基站仅广播其对应小区重点支持的网络切片即可，从而减少基站的广播消息的数据量，且有助于节省终端的功耗，且能够达到在网络侧控制吸纳具有特定业务的终端优先选择或重选到某个小区驻留的效果。
在基于图2所示实施例提供的一个可选实施例中，切片信息中还包括用于指示各个网络切片的优先级的信息。在一种可能的实现方式中，上述信息采用显示方式表示，例如在切片信息中分配专门的字段来指示各个网络切片的优先级。在另一种可能的实现方式中，上述信息采用隐式方式表示，例如各个网络切片的标识的排列顺序，体现了各个网络切片的优先级，比如排在最前面的具有最高优先级，排在最后面的具有最低优先级。另外，基站可以根据各个网络切片用于传输的业务，确定相应的优先级。
当最高优先级的候选小区的数量n大于1时，终端根据终端配置的网络切片在获取到的各个切片信息中的优先级，确定n个最高优先级的候选小区之间的优先级顺序。例如，终端确定出两个高优先级的候选小区，分别为小区A和小区B，终端具有的网络切片为切片1，假设小区A对应的基站发送的切片信息中指示切片1的优先级为x，小区B对应的基站发送的切片信息中指示切片1的优先级为y，x高于y，则终端确定小区A的优先级高于小区B的优先级。
另外，在确定n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个最高优先级的候选小区的优先级顺序相同，m为大于1的整数，且m小于或等于n，则终端还执行如下步骤以进一步确定出该m个最高优先级的候选小区之间的优先级顺序。若是从全部候选小区中选择一个目标小区驻留，则终端根据终端的配置信息确定m个最高优先级的候选小区之间的优先级顺序。若是从全部候选小区中重选一个目标小区驻留，则终端根据基站的指示信息确定m个最高优先级的候选小区之间的优先级顺序。以上过程与图1实施例介绍的确定多个最高优先级的候选小区之间的优先级顺序的过程相同，参见图1实施例中的介绍说明，本实施例对此不再赘述。
本公开实施例提供的方案中，还通过基站在切片信息中指示各个网络切片的优先级，以使得终端优先选择优先级高的网路切片所对应的小区进行驻留， 从而实现在网络侧对各个小区吸纳的终端进行管控。
需要说明的是，上述实施例中有关终端的步骤可以单独实现成为终端一侧的小区选择或重选方法，有关基站的步骤可以单独实现成为基站一侧的小区选择或重选方法。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图3是根据一示例性实施例示出的一种小区选择或重选装置的框图。该装置具有实现上述终端侧的小区选择或重选方法的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以包括：第一获取模块310、第一确定模块320和选择模块330。
第一获取模块310，被配置为获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识。
第一确定模块320，被配置为当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区。
选择模块330，被配置为根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
在基于图3所示实施例提供的一个可选实施例中，所述装置还包括：第二获取模块和第二确定模块。
第二获取模块，被配置为获取所述候选小区对应的门限偏移值。
第二确定模块，被配置为根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
所述第二获取模块，被配置为根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
可选地，所述选择模块，被配置为：按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；判断被选小区的信号功率是否大于所述被选小区对应的门限值；若所述被选小区的信号功率大于所述被选小区对应的门 限值，则将所述被选小区作为所述目标小区驻留；若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
在基于图3所示实施例提供的另一个可选实施例中，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：第三确定模块或者第四确定模块。
第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序。
第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
在基于图3所示实施例提供的另一个可选实施例中，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：第五确定模块。
第五确定模块，被配置为根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大于1的整数，且m小于或等于n，则所述装置还包括：第三确定模块或者第四确定模块。
第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序。
第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
图4是根据另一示例性实施例示出的一种小区选择或重选装置的框图。该装置具有实现上述基站侧的小区选择或重选方法的功能，所述功能可以通过硬 件实现，也可以通过硬件执行相应的软件实现。该装置可以包括：生成模块410和广播模块420。
生成模块410，被配置为生成切片信息，所述切片信息中包括至少一个网络切片的标识。
广播模块420，被配置为向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
在基于图4所示实施例提供的一个可选实施例中，所述广播模块，被配置为向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
在基于图4所示实施例提供的另一个可选实施例中，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
在基于图4所示实施例提供的另一个可选实施例中，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
本公开一示例性实施例还提供了一种小区选择或重选系统(或称为通信系统)，所述系统包括：终端和基站。所述终端包括如图3所示实施例或者基于图3所示实施例提供的任一可选实施例所提供的小区选择或重选装置。所述基站包括如图4所示实施例或者基于图4所示实施例提供的任一可选实施例所提供的小区选择或重选装置。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开一示例性实施例还提供了一种小区选择或重选装置，能够实现本公 开提供的终端侧的小区选择或重选方法。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述处理器还被配置为：
获取所述候选小区对应的门限偏移值；
根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值；
所述处理器被配置为：
根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
可选地，所述处理器被配置为：
按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；
判断被选小区的信号功率是否大于所述被选小区对应的门限值；
若所述被选小区的信号功率大于所述被选小区对应的门限值，则将所述被选小区作为所述目标小区驻留；
若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
可选地，当所述最高优先级的候选小区的数量n大于1时，所述处理器还被配置为：
若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序；
或者，
若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指 示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述处理器还被配置为：
根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
可选地，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大于1的整数，且m小于或等于n，则所述处理器还被配置为：
若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序；
或者，
若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
本公开一示例性实施例还提供了一种小区选择或重选装置，能够实现本公开提供的基站侧的小区选择或重选方法。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
生成切片信息，所述切片信息中包括至少一个网络切片的标识；
向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
可选地，所述处理器被配置为：
向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
可选地，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
可选地，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
上述主要以基站和终端为例，对本公开实施例提供的方案进行了介绍。可以理解的是，基站、终端为了实现上述功能，其包含了执行各个功能相应的硬 件结构和/或软件模块。结合本公开中所公开的实施例描述的各示例的单元及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术方案的范围。
图5是根据一示例性实施例示出的一种基站的结构示意图。
基站500包括发射器/接收器501和处理器502。其中，处理器502也可以为控制器，图5中表示为“控制器/处理器502”。所述发射器/接收器501用于支持基站与上述实施例中的所述终端之间收发信息，以及支持所述基站与其它网络实体之间进行通信。所述处理器502执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器501进行解调(例如将高频信号解调为基带信号)，并进一步由处理器502进行处理来恢复终端所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由处理器502进行处理，并由发射器501进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。需要说明的是，上述解调或调制的功能也可以由处理器502完成。例如，处理器502还用于执行上述方法实施例中基站侧的各个步骤，和/或本公开实施例所描述的技术方案的其它步骤。
进一步的，基站500还可以包括存储器503，存储器503用于存储基站500的程序代码和数据。此外，基站还可以包括通信单元504。通信单元504用于支持基站与其它网络实体(例如核心网中的网络设备等)进行通信。例如，在LTE系统中，该通信单元504可以是S1-U接口，用于支持基站与服务网关(Serving Gateway，S-GW)进行通信；或者，该通信单元504也可以是S1-MME接口，用于支持基站与移动性管理实体(Mobility Management Entity，MME)进行通信。
可以理解的是，图5仅仅示出了基站500的简化设计。在实际应用中，基站500可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本公开实施例的基站都在本公开实施例的保护范围之内。
图6是根据一示例性实施例示出的一种终端的结构示意图。
所述终端600包括发射器601，接收器602和处理器603。其中，处理器603也可以为控制器，图6中表示为“控制器/处理器603”。可选的，所述终端600还可以包括调制解调处理器605，其中，调制解调处理器605可以包括编码器606、调制器607、解码器608和解调器609。
在一个示例中，发射器601调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器602调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器605中，编码器606接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器607进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器609处理(例如，解调)该输入采样并提供符号估计。解码器608处理(例如，解交织和解码)该符号估计并提供发送给终端600的已解码的数据和信令消息。编码器606、调制器607、解调器609和解码器608可以由合成的调制解调处理器605来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当终端600不包括调制解调处理器605时，调制解调处理器605的上述功能也可以由处理器603完成。
处理器603对终端600的动作进行控制管理，用于执行上述本公开实施例中由终端600进行的处理过程。例如，处理器603还用于执行上述方法实施例中的终端侧的各个步骤，和/或本公开实施例所描述的技术方案的其它步骤。
进一步的，终端600还可以包括存储器604，存储器604用于存储用于终端600的程序代码和数据。
用于执行本公开实施例上述基站或终端的功能的处理器可以是中央处理器(Central Processing Unit，CPU)，通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。其可以实现或执行结合本公开实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
结合本公开实施例公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、电可擦可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于基站或终端中。当然，处理器和存储介质也可以作为分立组件存在于基站或终端中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本公开实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
本公开实施例还提供了一种计算机存储介质，用于储存为上述用于基站所用的计算机软件指令，其包含用于执行上述基站侧的小区选择或重选方法所设计的程序。
本公开实施例还提供了一种计算机存储介质，用于储存为上述用于终端所用的计算机软件指令，其包含用于执行上述终端侧的小区选择或重选方法所设计的程序。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化， 这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (25)

  1. 一种小区选择或重选方法，其特征在于，所述方法包括：
    获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
    当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
    根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述候选小区对应的门限偏移值；
    根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
  3. 根据权利要求2所述的方法，其特征在于，所述切片信息中还包括各个所述网络切片对应的门限偏移值；
    所述获取所述候选小区对应的门限偏移值，包括：
    根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
  4. 根据权利要求2所述的方法，其特征在于，所述根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，包括：
    按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；
    判断被选小区的信号功率是否大于所述被选小区对应的门限值；
    若所述被选小区的信号功率大于所述被选小区对应的门限值，则将所述被选小区作为所述目标小区驻留；
    若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，当所述最高优先级的候选小区的数量n大于1时，所述方法还包括：
    若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序；
    或者，
    若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
  6. 根据权利要求1至4任一项所述的方法，其特征在于，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述方法还包括：
    根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
  7. 根据权利要求6所述的方法，其特征在于，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大于1的整数，且m小于或等于n，则所述方法还包括：
    若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序；
    或者，
    若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
  8. 一种小区选择或重选方法，其特征在于，所述方法包括：
    生成切片信息，所述切片信息中包括至少一个网络切片的标识；
    向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
  9. 根据权利要求8所述的方法，其特征在于，所述向终端广播所述切片信息，包括：
    向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
  10. 根据权利要求8或9所述的方法，其特征在于，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
  11. 根据权利要求8或9所述的方法，其特征在于，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
  12. 一种小区选择或重选装置，其特征在于，所述装置包括：
    第一获取模块，被配置为获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
    第一确定模块，被配置为当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
    选择模块，被配置为根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
  13. 根据权利要求12所述的装置，其特征在于，所述装置还包括：
    第二获取模块，被配置为获取所述候选小区对应的门限偏移值；
    第二确定模块，被配置为根据所述候选小区对应的门限偏移值和预设门限值，确定所述候选小区对应的门限值，其中，所述候选小区对应的门限值用于判定是否将所述候选小区作为所述目标小区。
  14. 根据权利要求13所述的装置，其特征在于，所述切片信息中还包括各个所述网络切片对应的门限偏移值；
    所述第二获取模块，被配置为根据所述切片信息获取所述终端配置的网络切片对应的门限偏移值，并作为所述候选小区对应的门限偏移值。
  15. 根据权利要求13所述的装置，其特征在于，所述选择模块，被配置为：
    按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区；
    判断被选小区的信号功率是否大于所述被选小区对应的门限值；
    若所述被选小区的信号功率大于所述被选小区对应的门限值，则将所述被选小区作为所述目标小区驻留；
    若所述被选小区的信号功率小于所述被选小区对应的门限值，则再次从所述按照所述全部候选小区的优先级，从所述全部候选小区中选取一个小区的步骤开始执行。
  16. 根据权利要求12至15任一项所述的装置，其特征在于，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：
    第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻留，则根据所述终端的配置信息确定所述n个最高优先级的候选小区之间的优先级顺序；
    或者，
    第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述n个最高优先级的候选小区之间的优先级顺序。
  17. 根据权利要求12至15任一项所述的装置，其特征在于，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息，当所述最高优先级的候选小区的数量n大于1时，所述装置还包括：
    第五确定模块，被配置为根据所述终端配置的网络切片在获取到的各个所述切片信息中的优先级，确定所述n个最高优先级的候选小区之间的优先级顺序。
  18. 根据权利要求17所述的装置，其特征在于，在确定所述n个最高优先级的候选小区之间的优先级顺序之后，若仍然存在m个所述最高优先级的候选小区的优先级顺序相同，所述m为大于1的整数，且m小于或等于n，则所述装置还包括：
    第三确定模块，被配置为若是从所述全部候选小区中选择一个目标小区驻 留，则根据所述终端的配置信息确定所述m个最高优先级的候选小区之间的优先级顺序；
    或者，
    第四确定模块，被配置为若是从所述全部候选小区中重选一个目标小区驻留，则根据所述基站的指示信息确定所述m个最高优先级的候选小区之间的优先级顺序。
  19. 一种小区选择或重选装置，其特征在于，所述装置包括：
    生成模块，被配置为生成切片信息，所述切片信息中包括至少一个网络切片的标识；
    广播模块，被配置为向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
  20. 根据权利要求19所述的装置，其特征在于，
    所述广播模块，被配置为向所述终端广播最小系统消息minimum SI，所述minimum SI中携带所述切片信息。
  21. 根据权利要求19或20所述的装置，其特征在于，所述切片信息中还包括各个所述网络切片对应的门限偏移值。
  22. 根据权利要求19或20所述的装置，其特征在于，所述切片信息中还包括用于指示各个所述网络切片的优先级的信息。
  23. 一种小区选择或重选系统，其特征在于，所述系统包括：终端和基站；
    所述终端包括如权利要求12至18任一项所述的小区选择或重选装置；
    所述基站包括如权利要求19至22任一项所述的小区选择或重选装置。
  24. 一种小区选择或重选装置，其特征在于，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    获取基站发送的切片信息，所述切片信息中包括至少一个网络切片的标识；
    当所述切片信息中包含有终端配置的网络切片时，将所述基站对应的小区确定为最高优先级的候选小区；
    根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
  25. 一种小区选择或重选装置，其特征在于，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    生成切片信息，所述切片信息中包括至少一个网络切片的标识；
    向终端广播所述切片信息，所述终端用于在所述切片信息中包含有所述终端配置的网络切片的情况下，将基站对应的小区确定为最高优先级的候选小区，并根据全部候选小区的优先级，按序从所述全部候选小区中选择或重选一个目标小区驻留，其中，所述全部候选小区包括所述最高优先级的候选小区。
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