Cell reselection method, apparatus, and storage medium

Abstract

The present disclosure provides a cell reselection method, device and storage medium, and relates to the field of communication. The cell reselection method is executed by a terminal and comprises: determining that a target cell does not support one or more network slices of the terminal; and determining whether to perform reselection on the target cell and / or a same-frequency cell of the target cell. The present disclosure realizes a slice-based cell reselection scheme in a scenario where the terminal cannot access the target cell because the target cell does not support the slice of the terminal.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a cell reselection method, device and storage medium. BACKGROUND

[0002] In related communication technologies, a terminal needs to perform cell reselection so as to camp on a cell with higher priority or better signal quality. In the related procedure of cell reselection, a target cell is determined based on a reselection condition. For example, cell reselection is performed based on S criteria and R criteria.

[0003] Wherein, after the terminal determines the target cell, it can further determine whether the cell is a suitable cell. If the determined target cell is a suitable cell, the terminal reselects to the target cell. If the determined target cell is not a suitable cell, it is determined based on a protocol whether to reselect to the target cell subsequently. For example, reselection restriction can be performed on the target cell, and the target cell is not reselected. Or, reselection restriction can not be performed on the target cell, and the target cell is reselected.

[0004] Further, network slicing technology is proposed in related communication technologies. Through network slicing technology, a complete end-to-end virtual network can be provided for a specific user. By dividing network resources into multiple network slices, differentiated services can be provided for users with different service requirements (for example: delay, reliability, capacity, isolation and other functions).

[0005] Therefore, how to implement cell reselection based on network slicing is a direction that needs to be further studied at present. SUMMARY

[0006] To overcome the problems in related technologies, the present disclosure provides a cell reselection method, device and storage medium.

[0007] According to a first aspect of an embodiment of the present disclosure, a cell reselection method is provided, the method is performed by a terminal, and includes:

[0008] determining that the target cell does not support one or more network slices of the terminal; and determining whether to reselect to the target cell and / or a same-frequency cell of the target cell.

[0009] In an implementation manner, the determining whether to reselect to the target cell and / or the same-frequency cell of the target cell includes: determining whether to perform first reselection restriction on the target cell and / or the same-frequency cell of the target cell.

[0010] In an embodiment, the determining whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell comprises: determining to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell; and determining not to perform reselection on the target cell and / or the intra-frequency cell of the target cell.

[0011] In an embodiment, the determining whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell comprises:

[0012] determining not to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell; and determining to perform reselection on the target cell and / or the intra-frequency cell of the target cell.

[0013] In an embodiment, the first reselection restriction comprises at least one of:

[0014] stopping the target cell from being a candidate cell; stopping the intra-frequency cell of the target cell from being a candidate cell; lowering a priority of the target cell; lowering a priority of the intra-frequency cell of the target cell; and lowering a priority of a frequency point corresponding to the target cell.

[0015] In an embodiment, the determining whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell comprises:

[0016] receiving first indication information sent by a network device, the first indication information being used to indicate whether to perform cell reselection on the target cell and / or the intra-frequency cell of the target cell; and determining, according to the first indication information, whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0017] In an embodiment, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of:

[0018] a time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell,

[0019] a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0020] In an embodiment, the method further comprises: determining that a first reselection restriction release condition is met; and determining whether to release the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0021] In an embodiment, the determining whether to release the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell comprises:

[0022] re-determining whether the first reselection restriction condition is met, the first reselection restriction condition comprising one or more network slices not supported by the terminal; determining that the first reselection restriction condition is not met; and releasing the first reselection restriction on the target cell and / or an intra-frequency cell of the target cell.

[0023] In an embodiment, the first reselection restriction release condition comprises at least one of:

[0024] the terminal falling back to a procedure of not performing cell reselection based on the one or more network slices;

[0025] the terminal performing cell reselection based on other network slices different from a network slice currently performing cell reselection;

[0026] the terminal receiving a system message update indication;

[0027] the terminal entering an idle state;

[0028] the terminal receiving second indication information, the second indication information being used to indicate whether to release the first reselection restriction;

[0029] a highest-ranked cell changing;

[0030] the terminal moving out of a tracking area in which the terminal is located;

[0031] the terminal moving out of a registration area in which the terminal is located;

[0032] the terminal receiving a redirection message, the redirection message comprising a frequency on which the reselection restriction release has been performed;

[0033] a public land mobile network selected by the terminal changing.

[0034] In an embodiment, the second indication information is further used to determine that terminal slice information has changed; or the second indication information is further used to indicate that the first reselection restriction is released.

[0035] In an embodiment, the terminal slice information comprises at least one of:

[0036] a list of network slices supported by the terminal;

[0037] a list of frequencies corresponding to the network slices supported by the terminal;

[0038] a list of frequency priorities corresponding to the network slices supported by the terminal;

[0039] a network slice priority supported by the terminal.

[0040] In an implementation form, the determining that the target cell does not support one or more network slices of the terminal comprises:

[0041] receiving slice information supported or not supported by the target cell,

[0042] determining that the target cell does not support one or more network slices of the terminal.

[0043] According to a second aspect of embodiments of the present disclosure, a cell reselection method is provided, the method is performed by a network device, and comprises:

[0044] sending first indication information to a terminal, the first indication information being used to indicate whether to perform cell reselection on a target cell and / or a same-frequency cell of the target cell, wherein the target cell does not support one or more network slices of the terminal.

[0045] In an implementation form, the first indication information is further used to indicate whether the terminal performs a first reselection restriction on the target cell and / or the same-frequency cell of the target cell.

[0046] In an implementation form, the first indication information is specifically used to indicate that the terminal does not perform reselection on the target cell and / or the same-frequency cell of the target cell when performing the first reselection restriction.

[0047] In an implementation form, the first indication information is specifically used to indicate that the terminal performs reselection on the target cell and / or the same-frequency cell of the target cell when not performing the first reselection restriction.

[0048] In an implementation form, the first reselection restriction comprises at least one of:

[0049] stopping taking the target cell as a candidate cell;

[0050] stopping taking a same-frequency cell of the target cell as a candidate cell;

[0051] decreasing a priority of the target cell;

[0052] decreasing a priority of a same-frequency cell of the target cell;

[0053] decreasing a priority of a frequency point corresponding to the target cell.

[0054] In an implementation form, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of:

[0055] a time parameter of performing the first reselection restriction on the target cell and / or the same-frequency cell of the target cell, and a reselection number of performing the first reselection restriction on the target cell and / or the same-frequency cell of the target cell.

[0056] In an implementation form, the method further comprises sending second indication information to the terminal, the second indication information being used to indicate whether to cancel the first reselection restriction.

[0057] In an implementation form, the second indication information is further used to determine that terminal slice information has changed; or the second indication information is further used to indicate that the first reselection restriction is cancelled.

[0058] In an implementation form, the method further comprises sending slice information supported or not supported by the target cell.

[0059] According to a third aspect of embodiments of the present disclosure, a cell reselection apparatus is provided, comprising:

[0060] a processing unit configured to determine that a target cell does not support one or more network slices of a terminal;

[0061] the processing unit is further configured to determine whether to perform reselection on the target cell and / or a same-frequency cell of the target cell.

[0062] In an implementation form, the processing unit is configured to determine whether to perform a first reselection restriction on the target cell and / or a same-frequency cell of the target cell.

[0063] In an implementation form, the processing unit is configured to determine to perform a first reselection restriction on the target cell and / or a same-frequency cell of the target cell; and determine not to perform reselection on the target cell and / or the same-frequency cell of the target cell.

[0064] In an implementation form, the processing unit is configured to determine not to perform a first reselection restriction on the target cell and / or a same-frequency cell of the target cell; and determine to perform reselection on the target cell and / or the same-frequency cell of the target cell.

[0065] In an implementation form, the first reselection restriction comprises at least one of:

[0066] stopping the target cell as a candidate cell; stopping a same-frequency cell of the target cell as a candidate cell; lowering a priority of the target cell; lowering a priority of a same-frequency cell of the target cell; lowering a priority of a frequency point corresponding to the target cell.

[0067] In an implementation form, the processing unit is configured to: receive first indication information sent by a network device, the first indication information being used to indicate whether to perform cell reselection on a target cell and / or a same-frequency cell of the target cell; and determine whether to perform the first reselection restriction on the target cell and / or the same-frequency cell of the target cell according to the first indication information.

[0068] In an implementation, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of:

[0069] a time parameter for performing the first reselection restriction on the target cell and / or a same-frequency cell of the target cell,

[0070] a reselection number for performing the first reselection restriction on the target cell and / or a same-frequency cell of the target cell.

[0071] In an implementation, the processing unit is further configured to determine that a first reselection restriction release condition is met, and determine whether to release the first reselection restriction performed on the target cell and / or a same-frequency cell of the target cell.

[0072] In an implementation, the processing unit is configured to re-determine whether the first reselection restriction condition is met, the first reselection restriction condition comprising that one or more network slices supported by the terminal are not supported, determine that the first reselection restriction condition is not met, and release the first reselection restriction performed on the target cell and / or a same-frequency cell of the target cell.

[0073] In an implementation, the first reselection restriction release condition comprises at least one of:

[0074] the terminal falls back to a procedure of not performing cell reselection based on the one or more network slices;

[0075] the terminal performs cell reselection based on other network slices different from a network slice currently performing cell reselection;

[0076] the terminal receives a system message update indication;

[0077] the terminal enters an idle state;

[0078] the terminal receives second indication information, the second indication information being used to indicate whether to release performing the first reselection restriction;

[0079] a cell with a highest ranking changes;

[0080] the terminal moves out of a tracking area in which the terminal is located;

[0081] the terminal moves out of a registration area in which the terminal is located;

[0082] the terminal receives a redirection message, the redirection message comprising a frequency on which the reselection restriction release has been performed;

[0083] a public land mobile network selected by the terminal changes.

[0084] In an embodiment, the second indication information is further used to determine that the terminal slice information has changed; or the second indication information is further used to indicate that the first reselection restriction is released.

[0085] In an embodiment, the terminal slice information comprises at least one of the following:

[0086] a list of network slices supported by the terminal;

[0087] a list of frequency points corresponding to the network slices supported by the terminal;

[0088] a list of frequency point priorities corresponding to the network slices supported by the terminal;

[0089] a network slice priority supported by the terminal.

[0090] In an embodiment, the processing unit is configured to receive slice information supported or not supported by the target cell, and determine that the target cell does not support one or more network slices of the terminal.

[0091] According to a fourth aspect of the embodiments of the present disclosure, a cell reselection apparatus is provided, comprising:

[0092] a sending unit configured to send first indication information to a terminal, the first indication information being used to indicate whether to perform cell reselection on a target cell and / or a same-frequency cell of the target cell, wherein the target cell does not support one or more network slices of the terminal.

[0093] In an embodiment, the first indication information is further used to indicate whether the terminal performs a first reselection restriction on the target cell and / or the same-frequency cell of the target cell.

[0094] In an embodiment, the first indication information is specifically used to indicate that the terminal does not perform reselection on the target cell and / or the same-frequency cell of the target cell when performing the first reselection restriction.

[0095] In an embodiment, the first indication information is specifically used to indicate that the terminal performs reselection on the target cell and / or the same-frequency cell of the target cell when not performing the first reselection restriction.

[0096] In an embodiment, the first reselection restriction comprises at least one of the following:

[0097] stopping taking the target cell as a candidate cell;

[0098] stopping taking the same-frequency cell of the target cell as a candidate cell;

[0099] decreasing a priority of the target cell;

[0100] decrease the priority of the intra-frequency cell of the target cell;

[0101] decrease the priority of the frequency point corresponding to the target cell.

[0102] In an implementation form of the first aspect, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of:

[0103] a time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, and / or a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0104] In an implementation form of the first aspect, the sending unit is further configured to send, to the terminal, second indication information, the second indication information being used to indicate whether to release the first reselection restriction.

[0105] In an implementation form of the first aspect, the second indication information is further used to determine that the terminal slice information has been changed; or the second indication information is further used to indicate to release the first reselection restriction.

[0106] In an implementation form of the first aspect, the sending unit is further configured to send slice information supported or not supported by the target cell.

[0107] According to a fifth aspect of embodiments herein, there is provided a communication device comprising:

[0108] a processor;

[0109] a memory for storing processor-executable instructions;

[0110] wherein the processor is configured to perform the cell reselection method according to the first aspect or any implementation form of the first aspect.

[0111] According to a sixth aspect of embodiments herein, there is provided a communication device comprising:

[0112] a processor;

[0113] a memory for storing processor-executable instructions;

[0114] wherein the processor is configured to perform the cell reselection method according to the second aspect or any implementation form of the second aspect.

[0115] According to a seventh aspect of embodiments herein, there is provided a storage medium having instructions stored therein, which when executed by a processor of a terminal, cause the terminal to perform the cell reselection method according to the first aspect or any implementation form of the first aspect.

[0116] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, and the storage medium stores instructions. When the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to perform the cell reselection method in the second aspect or any one of the implementation manners of the second aspect.

[0117] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: in the case that the terminal determines that the target cell does not support one or more network slices of the terminal, the terminal determines whether to perform cell reselection on the target cell and / or a same-frequency cell of the target cell, and a slice-based cell reselection solution in the case that the terminal cannot access due to that the target cell does not support the slice of the terminal is implemented.

[0118] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0119] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0120] Figure 1 is a wireless communication system architecture diagram according to an exemplary embodiment.

[0121] Figure 2 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0122] Figure 3 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0123] Figure 4 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0124] Figure 5 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0125] Figure 6 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0126] Figure 7 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0127] Figure 8 is a flowchart of a cell reselection method according to an exemplary embodiment.

[0128] Figure 9 is a block diagram of a cell reselection apparatus according to an exemplary embodiment.

[0129] Figure 10 is a block diagram of a cell reselection apparatus according to an example embodiment.

[0130] Figure 11 is a block diagram of an apparatus for cell reselection according to an example embodiment.

[0131] Figure 12 is a block diagram of an apparatus for cell reselection according to an example embodiment. DETAILED DESCRIPTION

[0132] The example embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context of use indicates otherwise. The following description of example embodiments is not representative of all embodiments consistent with the present disclosure. Rather, it is merely an example of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0133] The cell reselection method provided by the embodiments of the present disclosure can be applied to Figure 1 the wireless communication system as shown in FIG. 1. Referring to FIG. 1, the wireless communication system includes terminals and network devices. The terminals and the network devices transmit and receive information through wireless resources. Figure 1

[0134] It can be understood that Figure 1 the wireless communication system as shown in FIG. 1 is only illustrative, and the wireless communication system can further include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, etc., which are not shown in FIG. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited by the embodiments of the present disclosure. Figure 1

[0135] ​​It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access with collision avoidance (CSMA / CA), and the like. Depending on the capacity, rate, latency, and the like of different networks, the networks can be classified into 2G (English: generation) networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. The 5G network can also be referred to as a new radio network (NR). For the convenience of description, the wireless communication network can be referred to as a network in the present disclosure.

[0136] Further, the network device involved in the present disclosure can also be referred to as a wireless access network device. The wireless access network device can be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), a transmission and reception point (TRP), and the like. It can also be a gNB in an NR system, or it can also be a component or a part of a device constituting a base station, and the like. When it is a vehicle-to-everything (V2X) communication system, the network device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form of the network device are not limited in the embodiments of the present disclosure.

[0137] Further, the terminal involved in the present disclosure, which can also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., is a device that provides voice and / or data connectivity for a user, for example, the terminal can be a handheld device having wireless connection function, a vehicle-mounted device, etc. At present, some examples of the terminal are: a mobile phone, a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the present disclosure embodiments do not limit the specific technology and specific device form adopted by the terminal.

[0138] The terminal selects or reselects a cell in the process of communication with the network device. The present disclosure embodiments are mainly applicable to the process of cell reselection. When the terminal is in an idle state or an inactive state, cell reselection needs to be continuously performed so as to camp on a cell with higher priority or better signal quality. The network device sets different frequency priorities to achieve the purpose of controlling the camping of the terminal. The terminal will select a cell with the best signal quality on a certain frequency point to better provide services.

[0139] In the related art, cell reselection can be divided into intra-frequency cell reselection and inter-frequency cell reselection. The intra-frequency cell reselection is mainly used to solve the wireless coverage problem, while the inter-frequency cell reselection can be used for both solving the wireless coverage problem and load balancing. In the 38.304 protocol, the inter-frequency cell reselection criteria mainly include the following:

[0140] The terminal acquires the frequency priority through a broadcast system message or a radio resource control (RRC) release message, and performs cell reselection based on the frequency priority. The cell reselection based on the frequency priority mainly involves high-priority frequency cell reselection, equal-priority frequency cell reselection, and low-priority frequency cell reselection. The criteria for cell reselection of different frequency priorities will be described below:

[0141] For high-priority frequency cell reselection: if the terminal camps on the current serving cell for more than 1s, and there is a high-priority frequency cell that meets S RAT >Thresh rxlev >Thresh X,HighP or Squal Thresh X,HighQ , the terminal will perform high priority frequency cell reselection. Wherein, S rxlev is the cell selection level, S qual is the cell selection quality. Thresh X,HighP is the high priority frequency cell level threshold, Thresh X,HighQ is the high priority frequency cell quality threshold. For low priority frequency cell reselection: when the terminal stays in the current serving cell for more than 1s, if the current serving cell satisfies S rxlev < Thresh Serving,LowP and there exists a low priority frequency cell satisfying S RAT > Thresh rxlev within Treselection X,LowP , the terminal will perform low priority frequency cell reselection; or if the current serving cell satisfies S qual < Thresh Serving,LowQ and there exists a low priority frequency cell satisfying S RAT > Thresh qual within Treselection X,LowQ . Wherein, Thresh Serving,LowP is the serving cell level threshold for reselection to a low priority frequency cell, Thresh X,LowP is the low priority frequency cell level threshold, Thresh Serving,LowQ is the serving cell quality threshold for reselection to a low priority frequency cell, Thresh X,LowQ is the low priority frequency cell quality threshold.

[0142] For equal priority frequency cell reselection: the same as the same frequency cell reselection criterion, all equal priority frequency cells are sorted according to the R criterion, and the cell with the highest R criterion ranking is selected. Wherein, the R criterion mainly refers to:

[0143] Rs = Q meas,s + Q hyst - Q offsettemp , Rn = Q meas,n - Q offset - Q offsettemp

[0144] Wherein, Rs is the R value of the serving cell, Rn is the R value of the neighbor cell, Q meas,s is the RSRP measurement value of the serving cell, Q meas,n is the RSRP measurement value of the neighbor cell, Q hyst is the cell reselection hysteresis value, Q offsettemp is the temporary offset value; Q offset is the offset value.

[0145] Further, if there are multiple cells satisfying the reselection condition, the terminal ranks all the cells satisfying the S criterion and the reselection condition according to the R criterion, selects the cell with the highest rank, and a high-priority frequency cell is ranked higher than a low-priority frequency cell.

[0146] If the cell with the highest rank is not a suitable cell, the terminal no longer considers the cell, or the cell and all the cells on the same frequency as the cell, in performing cell reselection within 300 s or at most 300 s. Here, the S criterion mainly refers to S rxlev > 0 and S qual > 0. Here, S rxlev is a cell selection level, and S qual is a cell selection quality. The cell selected or reselected by the terminal needs to satisfy the S criterion.

[0147] In the related art, in the cell reselection procedure, the terminal determines a target cell for reselection based on a reselection condition and an R criterion, reads a master information block (MIB) and a system information block 1 (SIB1) of the target cell, and determines whether the target cell is a suitable cell based on parameters in the MIB and the SIB1. If the target cell is a suitable cell, the terminal reselects to the target cell. If the target cell is not a suitable cell, the terminal determines a subsequent behavior according to a protocol. The subsequent behavior can be understood as determining to perform a reselection restriction on the target cell and / or other cells on the same frequency. The reselection restriction mainly includes the following:

[0148] (1) The target cell is regarded as a barred cell due to failure to acquire the MIB message, and the cell is excluded from the reselection candidate cell for at most 300 s. If other cells on the same frequency satisfy the reselection condition, the terminal can reselect to the other cells.

[0149] (2) If the target cell is indicated or regarded as a barred cell due to reasons other than failure to acquire the MIB message, the cell is excluded from the reselection candidate cell for 300 s, and whether the reselection of other cells on the same frequency is allowed is determined based on an indication in the MIB message. If the reselection of other cells on the same frequency is allowed, the terminal can reselect to the other cells on the same frequency. If the reselection of other cells on the same frequency is not allowed, if the cell is a licensed frequency cell or a cell of a public land mobile network (PLMN) satisfying a condition, the other cells on the same frequency stop reselection for 300 s, otherwise, the terminal can reselect to the other cells on the same frequency.

[0150] (3) Because the PLMN, Tracking Area (TA), and CAG do not meet the requirements, the terminal excludes the cell and all cells on the same frequency from the reselection candidate cell for a maximum of 300 s.

[0151] Further, the related art can also perform reselection restriction release on the target cell. For example, for (1) and (2) of the above reselection restriction, if the highest ranked cell changes, reselection restriction release is performed. For (3) of the above reselection restriction, if the terminal enters any cell selection state, reselection restriction release is performed. For another example, if the network device controls the terminal to redirect to a certain frequency point, the cell of the frequency point performs reselection restriction release.

[0152] Further, the related art proposes a network slicing technology. Through the network slicing technology, a complete end-to-end virtual network can be provided for a specific user. By dividing network resources into multiple network slices, differentiated services can be provided for users with different service requirements (for example: delay, reliability, capacity, isolation, and other functions).

[0153] Among them, the network device can configure the network slice supported or not supported by the target cell to implement cell reselection based on network slicing. However, the related art has not yet implemented a cell reselection scheme based on network slicing.

[0154] In view of this, the embodiments of the present disclosure provide a cell reselection method, in which a cell reselection scheme based on network slicing is implemented. In the cell reselection scheme based on network slicing, the terminal can determine the network slice of the terminal, wherein the network slice of the terminal can include one or more network slices supported by the terminal. The multiple network slices supported by the terminal can also be understood as a network slice group supported by the terminal. That is, the embodiments of the present disclosure provide a cell reselection based on network slicing based on the network slice or network slice group of the terminal.

[0155] It should be noted that the network slice of the terminal involved in the following embodiments of the present disclosure can be understood as the network slice used when the terminal determines the reselection priority and performs cell reselection. The network slice used when the terminal performs cell reselection can be one or multiple.

[0156] For example, the terminal supports network slices slice1 and slice2, in a cell reselection procedure performed by the terminal based on a frequency priority corresponding to slice1, the network slice of the terminal is slice1, in a cell reselection procedure performed by the terminal based on a frequency priority corresponding to slice2, the network slice of the terminal is slice2, and in a cell reselection procedure performed by the terminal based on frequency priorities determined based on slice1 and slice2, the network slice of the terminal is slice1 and slice2.

[0157] It should be noted that the embodiments of the present disclosure are only exemplary descriptions, and the manner of determining the network slice of the terminal in the present disclosure is not limited thereto.

[0158] In the embodiments of the present disclosure, the terminal can use a scheme for performing cell reselection based on a frequency priority in the related art to determine whether the target cell is a suitable cell. If the target cell is a suitable cell, the terminal can determine whether to perform reselection on the target cell and / or a same-frequency cell of the target cell based on slice information of the target cell and a network slice or a slice group of the terminal.

[0159] Figure 2 FIG. 1 is a flowchart of a cell reselection method according to an exemplary embodiment. Figure 2 As shown in FIG. 1, the cell reselection method is performed by a terminal and includes the following steps.

[0160] In step S11, it is determined whether the target cell is a suitable cell and whether the target cell supports a network slice or a network slice group of the terminal.

[0161] In step S12, if it is determined that the target cell is a suitable cell and the target cell supports the network slice or the network slice group of the terminal, the terminal is reselected to the determined target cell.

[0162] In an embodiment, the target cell involved in the embodiments of the present disclosure is a target cell determined based on a cell reselection procedure performed based on a frequency priority.

[0163] In another embodiment, the network slice is related to the frequency priority, and the target cell is determined based on a cell reselection procedure performed based on the frequency priority.

[0164] In the embodiments of the present disclosure, the network slice or the network slice group of the terminal can be determined based on slice information of a network slice supported by the terminal, for example, can be determined based on a list of network slices supported by the terminal. In an example, the network slice or the network slice group of the terminal used for performing cell reselection in the embodiments of the present disclosure can be one or more network slices in the list of network slices supported by the terminal.

[0165] The slice information of the network slice supported by the terminal can be a network slice identifier, a network slice group identifier, or other identifier, which is not limited in the embodiments of the present disclosure.

[0166] The slice information of the network slice supported by the terminal can be a network slice identifier, a network slice group identifier, or other identifier, which is not limited in the embodiments of the present disclosure.

[0167] Further, the slice information of the network slice supported or not supported by the target cell can be provided by the network device to the terminal. The slice information of the network slice supported or not supported by the target cell can be provided by the network device based on the system information of the target cell, or based on the system information of the serving cell, or based on the dedicated signaling. The terminal determines the slice information of the network slice supported or not supported by the target cell based on at least one of the system information of the target cell, the system information of the serving cell, or the dedicated signaling.

[0168] The slice information of the network slice supported or not supported by the target cell can be a network slice identifier, a network slice group identifier, or other identifier, which is not limited in the embodiments of the present disclosure.

[0169] In the cell reselection method provided by the embodiments of the present disclosure, when it is determined that the target cell is not a suitable cell, and / or the target cell does not support the network slice or the network slice group of the terminal, it is further determined whether to perform reselection on the target cell and / or the same-frequency cell of the target cell.

[0170] In an embodiment, when it is determined that the target cell does not support the network slice or the network slice group of the terminal, it is determined whether to perform reselection on the target cell and / or the same-frequency cell of the target cell.

[0171] Figure 3 A flowchart of a cell reselection method according to an exemplary embodiment is shown in FIG. 1. As shown in FIG. 1, the cell reselection method is performed by a terminal and includes the following steps. Figure 3

[0172] In step S21, it is determined that the target cell does not support one or more network slices of the terminal.

[0173] In step S22, it is determined whether to perform reselection on the target cell and / or the same-frequency cell of the target cell.

[0174] ​In the embodiments of the present disclosure, the target cell is determined based on the frequency priority in the cell reselection process. For example, the target cell is determined based on the slice-related frequency priority in the cell reselection process.

[0175] In the embodiments of the present disclosure, the terminal receives the slice information of the network slice supported or not supported by the target cell. The terminal determines that the target cell does not support one or more network slices of the terminal based on the slice information of the network slice supported or not supported by the target cell. The slice information of the network slice supported or not supported by the target cell can be a network slice identifier, a network slice group identifier, or other identifiers. The one or more network slices of the terminal can be understood as a network slice or a network slice group determined based on the network slice information supported by the terminal. For example, the one or more network slices of the terminal can be one or more network slices in the network slice list supported by the terminal.

[0176] In an example, it is assumed that the network slices supported by the target cell include Slice1, Slice2, and Slice3. The one network slice of the terminal includes Slice4, or the multiple network slices of the terminal include {Slice4, Slice5, and Slice6}. In this case, the target cell does not support the one or more network slices of the terminal.

[0177] In the embodiments of the present disclosure, in the case where it is determined that the target cell does not support the one or more network slices of the terminal, it can be further determined whether to perform reselection on the target cell and / or the intra-frequency cell of the target cell.

[0178] In an embodiment of the present disclosure, the determination of whether to perform reselection on the target cell and / or the intra-frequency cell of the target cell can be performed by determining whether to perform reselection limitation on the target cell and / or the intra-frequency cell of the target cell.

[0179] In the embodiments of the present disclosure, for the convenience of description, the reselection limitation performed in the case where the target cell does not support the one or more network slices of the terminal is referred to as the first reselection limitation. The reselection limitation performed on the target cell in the case where the target cell does not meet the suitable cell in the related art is referred to as the second reselection limitation. For example, the second reselection limitation can be the reselection limitation involved in the legacy cell reselection process.

[0180] The first reselection limitation involved in the embodiments of the present disclosure includes at least one of the following:

[0181] (1) Stopping the target cell as a candidate cell.

[0182] (2) Stopping the intra-frequency cell of the target cell as a candidate cell.

[0183] (3) reducing the priority of the target cell.

[0184] (4) reducing the priority of the intra-frequency cell of the target cell.

[0185] (5) reducing the priority of the frequency point corresponding to the target cell.

[0186] Figure 4 Fig. 1 is a flowchart of a cell reselection method according to an exemplary embodiment. Figure 4 As shown in Fig. 1, the cell reselection method is performed by a terminal and includes the following steps.

[0187] In step S31, it is determined that the target cell does not support one or more network slices of the terminal.

[0188] In the embodiments of the present disclosure, the target cell is a target cell determined based on a frequency priority in a cell reselection process. For example, the target cell is a target cell determined based on a slice-related frequency priority in a cell reselection process. The terminal can determine that the target cell does not support one or more network slices of the terminal based on slice information of network slices supported or not supported by the target cell.

[0189] In step S32, it is determined whether a first reselection restriction is performed on the target cell and / or an intra-frequency cell of the target cell.

[0190] In the embodiments of the present disclosure, in the case where it is determined that the target cell does not support one or more network slices of the terminal, it can be further determined whether a first reselection restriction is performed on the target cell and / or an intra-frequency cell of the target cell.

[0191] In the embodiments of the present disclosure, on the one hand, in the case where it is determined that the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, it is determined that no reselection is performed on the target cell and / or the intra-frequency cell of the target cell. On the other hand, in the case where it is determined that the first reselection restriction is not performed on the target cell and / or the intra-frequency cell of the target cell, it is determined that reselection is performed on the target cell and / or the intra-frequency cell of the target cell.

[0192] In one implementation of the embodiments of the present disclosure, the terminal can determine whether the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell based on a protocol. In another implementation of the embodiments of the present disclosure, the terminal can also receive indication information sent by a network device and determine whether the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell based on the indication information sent by the network device.

[0193] In the embodiments of the present disclosure, for the convenience of description, the indication information used to indicate whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can be referred to as first indication information. The first indication information is used to indicate whether to perform cell reselection on the target cell and / or the intra-frequency cell of the target cell.

[0194] The first indication information can include a broadcast system message or can also include proprietary signaling.

[0195] Based on the content included in the above first reselection restriction, the first reselection restriction involved in the embodiments of the present disclosure can include the following examples, for example.

[0196] Example one: the protocol stipulates to stop taking the target cell as a candidate cell.

[0197] Example two: the protocol stipulates to stop taking the target cell and other intra-frequency cells as candidate cells.

[0198] Example three: the protocol stipulates to stop taking the target cell as a candidate cell, and indicates whether to stop taking other intra-frequency cells as candidate cells through the first indication information.

[0199] Example four: the protocol stipulates to reduce the priority of the target cell.

[0200] Example five: the protocol stipulates to reduce the priority of the frequency point of the target cell.

[0201] Example six: the network device sends the first indication information to indicate to stop taking the target cell as a candidate cell.

[0202] Example seven: the network device sends the first indication information to indicate to stop taking the target cell and other intra-frequency cells as candidate cells.

[0203] Example eight: the network device sends the first indication information to indicate to reduce the priority of the target cell.

[0204] Example nine: the network device sends the first indication information to indicate to reduce the priority of the frequency point of the target cell.

[0205] It can be understood that in the embodiments of the present disclosure, reducing the priority of the target cell, or reducing the priority of the intra-frequency cell of the target cell, or reducing the priority of the frequency point corresponding to the target cell can be understood as reducing the priority of the target cell, the intra-frequency priority of the target cell or the priority of the frequency point corresponding to the target cell by N levels, where N is a positive integer, for example, N is 1 or can also be other values. In an example, in the embodiments of the present disclosure, the priority of the target cell, the intra-frequency priority of the target cell or the priority of the frequency point corresponding to the target cell can be reduced to the lowest priority, so that the possibility of the target cell, the intra-frequency priority of the target cell or the frequency point corresponding to the target cell becoming a candidate cell is reduced to the lowest.

[0206] It can be further understood that the examples related to the first reselection restriction described above are only illustrative, and the embodiments of the present disclosure can also include other examples or combinations of examples. For example, the embodiments of the present disclosure can include an example of separately reducing the priority of the intra-frequency cell of the target cell to perform the first reselection restriction on the intra-frequency cell of the target cell.

[0207] In the embodiments of the present disclosure, when determining whether to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, if the protocol stipulates or the first indication information indicates to stop the target cell and / or the intra-frequency cell of the target cell as a candidate cell, it can be determined to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. Or the protocol stipulates or the first indication information indicates to reduce the priority of the target cell and / or the priority of the intra-frequency cell of the target cell, it can be determined to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. If the protocol does not stipulate to stop the target cell and / or the intra-frequency cell of the target cell as a candidate cell, nor to reduce the priority of the target cell and / or the priority of the intra-frequency cell of the target cell, and the first indication information does not indicate to stop the target cell and / or the intra-frequency cell of the target cell as a candidate cell, nor to reduce the priority of the target cell and / or the priority of the intra-frequency cell of the target cell, it can be determined not to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0208] In the embodiments of the present disclosure, performing / not performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can be understood as being for the cell reselection process based on the terminal slice, that is, the reselection restriction is per slice restriction. In an example, the terminal performs cell reselection based on slice1, if a certain frequency point / cell is stopped from reselection because it does not support slice1, the restriction only applies to the cell reselection process based on slice1, when the terminal performs cell reselection based on slice2, the terminal ignores all reselection restrictions in the cell reselection based on other slices (slice1).

[0209] In an implementation of the embodiments of the present disclosure, the first reselection restriction related to the above embodiments can be configured with corresponding parameters, hereinafter referred to as first parameters. The first parameters can include at least one of the following: a time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, and / or a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. That is, in the case of determining to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell within the time parameter and / or within the reselection number.

[0210] In the embodiments of the present disclosure, the first parameter corresponding to the first reselection restriction can be determined based on a serving cell system message of the terminal, or can be determined based on dedicated signaling, or can be determined based on a protocol.

[0211] In one embodiment of the embodiments of the present disclosure, the time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell includes a time for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. For example, if the time indicated by the time parameter is 300s, the time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can include stopping the target cell and / or the intra-frequency cell of the target cell as a candidate cell within 300s. That is, the terminal stops the target cell and / or the intra-frequency cell of the target cell as a candidate cell within 300s.

[0212] In another embodiment of the embodiments of the present disclosure, the time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell includes a maximum time for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. For example, if the maximum time is 300s, the time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can include that the maximum time for stopping the target cell and / or the intra-frequency cell of the target cell as a candidate cell is 300s. That is, the terminal can determine a time less than or equal to 300s, and stop the target cell and / or the intra-frequency cell of the target cell as a candidate cell within the determined time.

[0213] In one embodiment of the embodiments of the present disclosure, the reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell includes a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. For example, if the reselection number indicated by the reselection number is M times, the reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can include stopping the target cell and / or the intra-frequency cell of the target cell as a candidate cell within M times. That is, the terminal cannot take the target cell and / or the intra-frequency cell of the target cell as a candidate cell in the M times of performing the reselection process.

[0214] In another implementation of the embodiments of the present disclosure, the number of reselections of the target cell and / or the intra-frequency cell of the target cell subject to the first reselection restriction includes a maximum number of reselections of the target cell and / or the intra-frequency cell of the target cell subject to the first reselection restriction. For example, the maximum number of reselections is M, and the number of reselections of the target cell and / or the intra-frequency cell of the target cell subject to the first reselection restriction can include that the maximum number of reselections of the target cell and / or the intra-frequency cell of the target cell as a candidate cell is M. That is, the terminal can determine a number of reselections less than or equal to M, and stop the target cell and / or the intra-frequency cell of the target cell as a candidate cell within the determined number of reselections. For example, the target cell and / or the intra-frequency cell of the target cell subject to the first reselection restriction cannot be a candidate cell in N reselections. Wherein N is less than or equal to M.

[0215] In an example, the network device configures the indication information through a broadcast system message or a dedicated signaling, and the terminal receives and determines whether to allow the terminal to reselect to other intra-frequency cells based on the indication information. If reselection to other intra-frequency cells is allowed, only the reselection of the current target cell is stopped within a period of time (300s) or a certain number of cell reselections. If reselection to other intra-frequency cells is not allowed, the reselection of the current target cell and all intra-frequency cells is stopped within a period of time (300s) or a certain number of cell reselections.

[0216] The cell reselection method provided by the embodiments of the present disclosure also provides a scheme for performing reselection restriction removal when the target cell does not support one or more network slices of the terminal, that is, a scheme for removing the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0217] Figure 5 is a flowchart of a cell reselection method according to an example embodiment, as shown in Figure 5 The cell reselection method is performed by the terminal and includes the following steps.

[0218] Step S41, determine whether to remove the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0219] In the embodiments of the present disclosure, the target cell referred to is a target cell determined based on a frequency priority in a cell reselection process. For example, the target cell is a target cell determined based on a slice-related frequency priority in a cell reselection process.

[0220] In an implementation of the embodiments of the present disclosure, based on the first reselection restriction removal condition, it is determined whether to remove the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0221] In the embodiments of the present disclosure, the first reselection restriction release condition can include at least one of the following:

[0222] A: the terminal reverts to a cell reselection procedure that is not based on one or more network slices supported by the terminal.

[0223] For example, the terminal reverts to a legacy cell reselection procedure, which is understood as satisfying the first reselection restriction release condition.

[0224] B: the terminal performs cell reselection based on a network slice different from the network slice currently used for cell reselection.

[0225] For example, the terminal performs cell reselection based on slice1 and switches to cell reselection based on slice2, which is understood as satisfying the first reselection restriction release condition.

[0226] C: the terminal receives a system message update indication.

[0227] Example 1: when the terminal receives a system message update indication, it is determined that the first reselection restriction release condition is satisfied.

[0228] Example 2: when the terminal receives a system message update indication, it is determined that the slice information supported or not supported by the cell has been updated after re-reading the system message, and it is determined that the first reselection restriction release condition is satisfied.

[0229] D: the terminal enters an idle state.

[0230] For example, when the terminal enters an idle state, it is determined that the first reselection restriction release condition is satisfied.

[0231] E: the terminal receives an indication information (hereinafter referred to as second indication information) for determining whether to release the first reselection restriction.

[0232] The second indication information is used to indicate whether to release the execution of the first reselection restriction. The second indication information includes at least one of the following: a system broadcast message, dedicated signaling, and indication information sent by a terminal non-access layer (NAS) to a terminal access layer (AS).

[0233] Further, in an aspect of the embodiments of the present disclosure, the second indication information can be directly indicative of the release of the first reselection restriction. In another aspect of the embodiments of the present disclosure, the second indication information can also be a message for determining that the terminal slice information has changed. The terminal slice information includes at least one of the following: a network slice supported by the terminal; a frequency point list corresponding to the network slice supported by the terminal; a frequency point priority list corresponding to the network slice supported by the terminal; and a network slice priority supported by the terminal.

[0234] For example, the terminal receives second indication information indicating that the restriction is released by the network device through a broadcast system message or dedicated signaling, and determines that the first reselection restriction release condition is met. For another example, the terminal AS layer receives indication information from the terminal NAS layer, and determines that the first reselection restriction release condition is met.

[0235] In the embodiment, the indication information of the NAS layer can be used to indicate terminal slice information, and the AS layer of the terminal determines that the terminal slice information is changed based on the indication information, and thus determines that the first reselection restriction release condition is met.

[0236] F: the highest-ranked cell changes.

[0237] In the embodiment, the ranking can be understood as the ranking of the cell determined based on the R criterion.

[0238] For example, the terminal determines that the highest-ranked cell changes, and determines that the first reselection restriction release condition is met.

[0239] G: the terminal moves out of the tracking area in which the terminal is located.

[0240] For example, the terminal determines that the terminal moves out of the tracking area in which the terminal is located, and determines that the first reselection restriction release condition is met.

[0241] H: the terminal moves out of the registration area in which the terminal is located.

[0242] For example, the terminal determines that the terminal moves out of the registration area in which the terminal is located, and determines that the first reselection restriction release condition is met.

[0243] I: the terminal receives a redirection message including a frequency point on which the reselection restriction release has been performed.

[0244] For example, if the network device controls the terminal to be redirected to a frequency point, and the frequency point is a frequency point on which the reselection restriction release has been performed, it is determined that the first reselection restriction condition is met.

[0245] J: the PLMN selected by the terminal changes.

[0246] For example, if the terminal selects a PLMN different from the current PLMN in which the terminal is located, it is determined that the first reselection restriction release condition is met.

[0247] K: the terminal determines that the Allowed Network Slice Selection Assistance Information (NSSAI) changes.

[0248] In the embodiment, when it is determined that the first reselection restriction release condition is met, the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can be directly released.

[0249] In another implementation of the embodiments of the present disclosure, in a case where it is determined that the first reselection restriction release condition is met, it can be further determined whether to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0250] In an example, in a case where it is determined that the first reselection restriction release condition is met, the embodiments of the present disclosure can further determine whether to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell based on the agreement. For example, it is determined to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell based on the agreement. Or it is determined not to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell based on the agreement.

[0251] In another example, in a case where it is determined that the first reselection restriction release condition is met, the embodiments of the present disclosure can further determine whether to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell based on the indication information sent by the network device. For example, if the terminal receives the second indication information for determining to release the first reselection restriction, it is determined to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0252] In yet another example, in a case where the first reselection restriction release condition is determined, the terminal can further determine whether the target cell and / or the intra-frequency cell of the target cell still meets the first reselection restriction condition based on the condition for performing the first reselection restriction, to determine whether to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0253] The first reselection restriction condition includes that the target cell does not support one or more network slices of the terminal.

[0254] In the embodiments of the present disclosure, in a case where it is determined that the first reselection restriction release condition is met and it is determined that the first reselection restriction condition is not met, the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell can be released. If it is determined that the first reselection restriction condition is met, it is determined not to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0255] In the cell reselection method provided by the embodiments of the present disclosure, in a case where the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, it can be further determined whether to release the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0256] In an example, the terminal determines that the target cell does not support one or more network slices of the terminal, and determines to perform the first reselection restriction on the target cell and / or a same-frequency cell of the target cell. It is determined whether the first reselection restriction release condition is met. In a case where it is determined that the first reselection restriction release condition is met, it is determined whether to release the first reselection restriction performed on the target cell and / or the same-frequency cell of the target cell. In a case where it is determined that the first reselection restriction release condition is not met, it is not necessary to determine whether to release the first reselection restriction performed on the target cell and / or the same-frequency cell of the target cell.

[0257] In the embodiments of the present disclosure, in a case where the terminal determines that the target cell does not support one or more network slices of the terminal, and determines to perform the first reselection restriction on the target cell and / or a same-frequency cell of the target cell, the execution process of determining whether to release the first reselection restriction performed on the target cell and / or the same-frequency cell of the target cell can refer to the related description in the above embodiments, which will not be described in detail herein.

[0258] In another cell reselection method provided by the embodiments of the present disclosure, in a case where it is determined that the target cell is not a suitable cell, it can be further determined whether to perform reselection on the target cell and / or a same-frequency cell of the target cell.

[0259] Figure 6 is a flowchart of a cell reselection method according to an example embodiment, as shown in Figure 6 The cell reselection method is performed by a terminal, and includes the following steps.

[0260] In step S51, it is determined that the target cell is not a suitable cell.

[0261] In step S52, it is determined whether to perform reselection on the target cell and / or a same-frequency cell of the target cell.

[0262] In the embodiments of the present disclosure, the determination that the target cell is not a suitable cell can be based on the definition of the suitable cell in the standard TS38.304. When the target cell does not meet the definition of the suitable cell, it can be determined that the target cell is not a suitable cell. The definition of the suitable cell in the current standard TS38.304 includes:

[0263] I. For a terminal in a standalone non-public network (SNPN) access mode, if the following conditions are met, the cell is considered to be a suitable cell:

[0264] A: The cell is part of a selected PLMN or a registered PLMN or a PLMN in the equivalent PLMN list, and for the PLMN, the following conditions are met: the PLMN-ID of the PLMN is broadcast by the cell without an associated closed access group identifier (CAG-ID), and the individual CAG (CAG-only) indication in the terminal for the PLMN is absent or incorrect; the allowed CAG list in the terminal for the PLMN includes the CAG-ID broadcast by the cell for the PLMN.

[0265] B: The cell selection criteria are met.

[0266] C: According to the latest information provided by NAS, it is determined that the following conditions are met: the cell is not prohibited; the tracking area to which the cell belongs does not belong to the part of the "prohibited tracking area for roaming" list belonging to the PLMN satisfying the above item A.

[0267] II. For a terminal operating in SNPN access mode, if the following conditions are met, the cell is considered to be a suitable cell:

[0268] A: The cell is part of a selected SNPN or a registered SNPN of the terminal.

[0269] B: The cell selection criteria are met.

[0270] C: According to the latest information provided by NAS, it is determined that the following conditions are met: the cell is not prohibited; the tracking area to which the cell belongs does not belong to the part of the "prohibited tracking area for roaming" list belonging to the selected SNPN or the registered SNPN of the terminal.

[0271] In the embodiments of the present disclosure, in the case where it is determined that the target cell is not a suitable cell, it can be further determined whether to perform cell reselection on the target cell and / or the intra-frequency cell of the target cell. Wherein, in the case where it is determined that the target cell is not a suitable cell, whether to perform cell reselection on the target cell and / or the intra-frequency cell of the target cell can be determined by determining whether to perform a second reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0272] Wherein, the second reselection restriction involved in the embodiments of the present disclosure is the reselection restriction performed on the target cell in the case where the target cell does not meet the suitable cell in the related art, and therefore will not be described in detail here.

[0273] In an embodiment of the present disclosure, in a case where it is determined that the second reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, it is further determined whether to release the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0274] Furthermore, in a case where the second reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell in an embodiment of the present disclosure, it can be further determined whether to release the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0275] In an embodiment of the present disclosure, the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell can be released based on a second reselection restriction release condition. The second reselection restriction release condition is a condition for releasing the reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell in a case where the target cell does not meet the suitable cell in the related art, and thus will not be described in detail herein.

[0276] Based on the above embodiments, in a cell reselection method provided in an embodiment of the present disclosure, a terminal can determine whether a target cell supports one or more network slices of the terminal, and can also determine whether the target cell is a suitable cell, and perform a first reselection restriction and / or a second reselection restriction on the target cell and / or an intra-frequency cell of the target cell based on a corresponding determination result. If it is determined that the target cell supports one or more network slices of the terminal, and the target cell is a suitable cell, the terminal is reselected to the target cell. The implementation process can be referred to Figure 2 related embodiments. If it is determined that the target cell does not support one or more network slices of the terminal, and / or the target cell is not a suitable cell, the reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell can include the following examples:

[0277] Example 1: first determine whether the target cell supports one or more network slices of the terminal. If it is determined that the target cell does not support one or more network slices of the terminal, perform a first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. If it is determined that the target cell supports one or more network slices of the terminal, further determine whether the target cell is a suitable cell. If it is determined that the target cell is not a suitable cell, perform a second reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0278] Example 2: first determine whether the target cell is a suitable cell. If it is determined that the target cell is not a suitable cell, perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. If it is determined that the target cell is a suitable cell, further determine whether the target cell supports one or more network slices of the terminal. If it is determined that the target cell does not support one or more network slices of the terminal, perform the second reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0279] Example 3: perform the determination of whether the target cell supports one or more network slices of the terminal and the determination of whether the target cell is a suitable cell in parallel. If it is determined that the target cell does not support one or more network slices of the terminal, perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. If it is determined that the target cell is not a suitable cell, perform the second reselection restriction on the target cell and / or the intra-frequency cell of the target cell. If it is determined that the target cell does not support one or more network slices of the terminal and it is determined that the target cell is not a suitable cell, determine whether to perform the first reselection restriction and / or the second reselection restriction on the target cell and / or the intra-frequency cell of the target cell based on a protocol or indication information sent by a network device.

[0280] In the method of cell reselection provided in the embodiments of the present disclosure, it can be determined whether to release the first reselection restriction and / or the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell. For example, the determination of whether to release the first reselection restriction and / or the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell can include the following examples:

[0281] Example 1: determine whether to release the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the first reselection release condition. And / or determine whether to release the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the second reselection release condition.

[0282] Example 2: determine whether to release the reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the first reselection release condition and / or the second reselection release condition based on a protocol or indication information sent by a network device.

[0283] Example 3: the terminal re-determines whether to meet the first reselection restriction condition and / or the second reselection restriction condition. If the first reselection restriction condition is no longer met, release the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell. If the second reselection restriction condition is no longer met, release the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell.

[0284] Further, the method for cell reselection provided by the embodiments of the present disclosure can further comprise: in a case where it is determined that the target cell does not support one or more network slices of the terminal, and / or the target cell is not a suitable cell, and the first reselection restriction and / or the second reselection restriction are performed on the target cell and / or the intra-frequency cell of the target cell, further determining whether to release the first reselection restriction and / or the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell. For example, the following examples can be included:

[0285] Example 1: In a case where it is determined that the target cell does not support one or more network slices of the terminal, and the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, determining whether to release the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the first reselection restriction release condition. In a case where it is determined that the target cell is not a suitable cell, and the second reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, determining whether to release the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the second reselection restriction release condition.

[0286] Example 2: In a case where it is determined that the target cell does not support one or more network slices of the terminal, and / or the target cell is not a suitable cell, and the first reselection restriction and / or the second reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, determining, based on a protocol or indication information sent by a network device, whether to release the reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell according to the first reselection restriction release condition and / or the second reselection restriction release condition.

[0287] Example 3: In a case where it is determined that the target cell does not support one or more network slices of the terminal, and / or the target cell is not a suitable cell, and the first reselection restriction and / or the second reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell, the terminal re-determines whether the first reselection restriction condition and / or the second reselection restriction condition is met. If the first reselection restriction condition is no longer met, the first reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell is released. If the second reselection restriction condition is no longer met, the second reselection restriction performed on the target cell and / or the intra-frequency cell of the target cell is released.

[0288] The cell reselection method provided by the embodiments of the present disclosure is that, in the case that the target cell of the terminal supports one or more network slices of the terminal and the target cell is a suitable cell, the terminal reselects to the target cell. In the case that the target cell of the terminal does not support one or more network slices of the terminal and / or the target cell of the terminal is not a suitable cell, it can be further determined whether the target cell and / or a same-frequency cell of the target cell is reselected. And, the present disclosure realizes the reselection restriction of the target cell or other cells in the same frequency of the target cell and the solution to remove the restriction in the case that the target cell cannot be accessed due to not supporting the network slice of the terminal in the cell reselection process based on the network slice.

[0289] Based on the same concept, the embodiments of the present disclosure also provide a cell reselection method performed by a network device.

[0290] Figure 7 FIG. 1 is a flowchart of a cell reselection method according to an exemplary embodiment, which can be performed alone or in combination with other embodiments. As shown in FIG. 1, the cell reselection method is performed by a network device, including the following steps. Figure 7

[0291] In step S61, first indication information is sent to the terminal.

[0292] The first indication information is used to indicate whether the target cell and / or a same-frequency cell of the target cell is reselected. The target cell does not support one or more network slices of the terminal.

[0293] In the embodiments of the present disclosure, the target cell is determined based on the frequency priority in the cell reselection process. For example, the target cell is determined based on the slice-related frequency priority in the cell reselection process.

[0294] In an implementation, the first indication information is also used to indicate whether the terminal performs a first reselection restriction on the target cell and / or a same-frequency cell of the target cell.

[0295] On the one hand, the first indication information is specifically used to indicate that the terminal does not reselect the target cell and / or a same-frequency cell of the target cell when the first reselection restriction is performed. On the other hand, the first indication information is specifically used to indicate that the terminal reselects the target cell and / or a same-frequency cell of the target cell when the first reselection restriction is not performed.

[0296] In an implementation, the first reselection restriction in the embodiments of the present disclosure includes at least one of the following:

[0297] (1) Stop taking the target cell as a candidate cell.

[0298] ​(2) stop taking the intra-frequency cell of the target cell as a candidate cell.

[0299] (3) reduce the priority of the target cell.

[0300] (4) reduce the priority of the intra-frequency cell of the target cell.

[0301] (5) reduce the priority of the frequency point corresponding to the target cell.

[0302] Based on the above-mentioned content included in the first restriction, the first reselection restriction involved in the embodiments of the present disclosure may, for example, include the following examples:

[0303] Example 1: the network device sends the first indication information to indicate to stop taking the target cell as a candidate cell.

[0304] Example 2: the network device sends the first indication information to indicate to stop taking the target cell and the intra-frequency other cell as a candidate cell.

[0305] Example 3: the network device sends the first indication information to indicate to reduce the priority of the target cell.

[0306] Example 4: the network device sends the first indication information to indicate to reduce the priority of the frequency point of the target cell.

[0307] In the embodiments of the present disclosure, reducing the priority of the target cell, or reducing the priority of the intra-frequency cell of the target cell, or reducing the priority of the frequency point corresponding to the target cell, can be understood as reducing the priority of the target cell, the intra-frequency priority of the target cell, or the priority of the frequency point corresponding to the target cell by N levels, where N is a positive integer, for example, N is 1 or can also be other numerical values. In an example, the priority of the target cell, the intra-frequency priority of the target cell, or the priority of the frequency point corresponding to the target cell can be reduced to the lowest priority in the embodiments of the present disclosure, that is, the possibility of the target cell, the intra-frequency priority of the target cell, or the frequency point corresponding to the target cell becoming a candidate cell is reduced to the lowest.

[0308] In an example, the first indication information in the embodiments of the present disclosure can be used to indicate whether to stop taking the intra-frequency other cell as a candidate cell, so as to indicate whether the terminal performs cell reselection on the target cell and / or the intra-frequency cell of the target cell.

[0309] The first indication information is a broadcast system message or a dedicated signaling.

[0310] In an embodiment, the embodiments of the present disclosure can configure a corresponding first parameter for the first reselection restriction. The first parameter includes at least one of the following: a time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, and / or a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0311] The first parameter can include a time parameter for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, and / or a reselection number for performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell. That is, in the case of determining to perform the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, the first reselection restriction is performed on the target cell and / or the intra-frequency cell of the target cell within the time parameter and / or within the reselection number.

[0312] Figure 8 FIG. 7 is a flowchart of a cell reselection method according to an example embodiment, which can be performed alone or in combination with other embodiments. As shown in FIG. 7, the cell reselection method is performed by a network device, and includes the following steps. Figure 8

[0313] In step S71, the second indication information is sent to the terminal, and the second indication information is used to indicate whether the terminal releases the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0314] In an embodiment, the second indication information is at least one of the following: a system broadcast message; dedicated signaling; and indication information sent by a terminal non-access layer to a terminal access layer.

[0315] In an embodiment, the second indication information is further used to determine that the terminal slice information has changed; or the second indication information is further used to indicate the release of the first reselection restriction.

[0316] The embodiments of the present disclosure further provide a cell reselection method, in which a network device sends first indication information and second indication information to a terminal. The first indication information is used to indicate whether the terminal performs cell reselection on a target cell and / or an intra-frequency cell of the target cell in the case that the target cell does not support one or more network slices of the terminal. The second indication information is used to indicate whether the terminal releases a first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0317] In an embodiment, the network device can further send slice information supported or not supported by the target cell to the terminal, so that the terminal determines that the target cell does not support one or more network slices of the terminal based on the slice information of the network slice supported or not supported by the target cell.

[0318] In the embodiments of the present disclosure, the target cell is determined based on a frequency priority in a cell reselection process. For example, the target cell is determined based on a slice-related frequency priority in a cell reselection process.

[0319] ​The slice information of the network slice supported or not supported by the target cell can be a network slice identifier, a network slice group identifier, or other identifiers.

[0320] It can be understood that the cell reselection method performed by the network device provided in the embodiments of the present disclosure is that the network device sends relevant parameter information for implementing cell reselection based on network slices, such as the first indication information, the second indication information, and the slice information of the network slice supported or not supported by the target cell, so that in the case that the target cell of the terminal does not support one or more network slices of the terminal and / or the target cell of the terminal is not a suitable cell, it can be further determined whether to perform cell reselection on the target cell and / or the same-frequency cell of the target cell. Moreover, the present disclosure realizes the reselection restriction and restriction release scheme of the target cell or other cells of the same frequency in the case that the target cell cannot be accessed due to the network slice not supported by the terminal in the cell reselection process based on network slices. For the scheme of the network device implementing cell reselection, the same or similar scheme involved in the scheme of the terminal implementing cell reselection is not described here again, and can be referred to the related description of the above embodiments.

[0321] It can be understood that the cell reselection method provided in the embodiments of the present disclosure is also applicable to the process of the terminal and the network device interacting to implement cell reselection. In the process of the terminal and the network device interacting to implement cell reselection, the terminal and the network device each have the functions involved in the above embodiments, so for the process of the terminal and the network device interacting to implement cell reselection, the related description of the above embodiments can be referred to, and will not be described in detail here.

[0322] It should be noted that those skilled in the art can understand that the various embodiments / embodiments involved in the above embodiments of the present disclosure can be used in combination with the foregoing embodiments, or can be used independently. Whether it is used alone or in combination with the foregoing embodiments, the implementation principle is similar. In the embodiments of the present disclosure, some embodiments are described as embodiments used together. Of course, those skilled in the art can understand that such example descriptions are not a limitation of the embodiments of the present disclosure.

[0323] Based on the same concept, the embodiments of the present disclosure also provide a cell reselection device.

[0324] It can be understood that the cell reselection apparatus provided by the embodiments of the present disclosure comprises a hardware structure and / or a software module corresponding to the execution of each function in order to achieve the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is driven by hardware or computer software to execute hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

[0325] Figure 9 is a block diagram of a cell reselection apparatus according to an example embodiment. Referring to Figure 9 The cell reselection apparatus 100 comprises a processing unit 101.

[0326] The processing unit 101 is configured to determine that the target cell does not support one or more network slices of the terminal, and determine whether to perform cell reselection on the target cell and / or a same-frequency cell of the target cell.

[0327] In an implementation, the processing unit 101 is configured to determine whether to perform a first reselection restriction on the target cell and / or the same-frequency cell of the target cell.

[0328] In an implementation, the processing unit 101 is configured to determine to perform the first reselection restriction on the target cell and / or the same-frequency cell of the target cell; and determine not to perform cell reselection on the target cell and / or the same-frequency cell of the target cell.

[0329] In an implementation, the processing unit 101 is configured to determine not to perform the first reselection restriction on the target cell and / or the same-frequency cell of the target cell; and determine to perform cell reselection on the target cell and / or the same-frequency cell of the target cell.

[0330] In an implementation, the first reselection restriction comprises at least one of:

[0331] stopping the target cell as a candidate cell; stopping the same-frequency cell of the target cell as a candidate cell; lowering a priority of the target cell; lowering a priority of the same-frequency cell of the target cell; and lowering a priority of a frequency point corresponding to the target cell.

[0332] In an implementation, the processing unit 101 is configured to receive first indication information sent by a network device, the first indication information being used to indicate whether to perform cell reselection on the target cell and / or the same-frequency cell of the target cell; and determine whether to perform the first reselection restriction on the target cell and / or the same-frequency cell of the target cell according to the first indication information.

[0333] In an embodiment, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of:

[0334] In an embodiment, the first reselection restriction is performed on the target cell and / or a same-frequency cell of the target cell for a time parameter, and the first reselection restriction is performed on the target cell and / or the same-frequency cell of the target cell for a reselection number.

[0335] In an embodiment, the processing unit 101 is further configured to determine that a first reselection restriction release condition is met, and determine whether to release the first reselection restriction performed on the target cell and / or a same-frequency cell of the target cell.

[0336] In an embodiment, the processing unit 101 is configured to re-determine whether the first reselection restriction condition is met, the first reselection restriction condition comprises one or more network slices not supported by the terminal, determine that the first reselection restriction condition is not met, and release the first reselection restriction performed on the target cell and / or the same-frequency cell of the target cell.

[0337] In an embodiment, the first reselection restriction release condition comprises at least one of:

[0338] The terminal falls back to a procedure of not performing cell reselection based on one or more network slices. The terminal performs cell reselection based on other network slices different from the network slices currently performing cell reselection. The terminal receives a system message update indication. The terminal enters an arbitrary cell selection state. The terminal receives second indication information, the second indication information being used to indicate whether to release the first reselection restriction. The cell with the highest ranking changes. The terminal moves out of a tracking area in which the terminal is located. The terminal moves out of a registration area in which the terminal is located. The terminal receives a redirection message, the redirection message comprising a frequency on which the reselection restriction release has been performed. A public land mobile network selected by the terminal changes.

[0339] In an embodiment, the second indication information is further used to determine that terminal slice information has changed. Or the second indication information is further used to indicate that the first reselection restriction is released.

[0340] In an embodiment, the terminal slice information comprises at least one of: a list of network slices supported by the terminal. A list of frequencies corresponding to the network slices supported by the terminal. A list of frequency priorities corresponding to the network slices supported by the terminal. A priority of the network slices supported by the terminal.

[0341] In an embodiment, the processing unit 101 is configured to receive slice information supported or not supported by the target cell, and determine that the target cell does not support one or more network slices of the terminal.

[0342] Figure 10 is a block diagram of a cell reselection apparatus according to an exemplary embodiment. Refer to Figure 10The cell reselection apparatus 200 comprises a sending unit 201.

[0343] The sending unit 201 is configured to send first indication information to the terminal, the first indication information being used to indicate whether to perform cell reselection on the target cell and / or the intra-frequency cell of the target cell, wherein the target cell does not support one or more network slices of the terminal.

[0344] In an implementation manner, the first indication information is further used to indicate whether the terminal performs a first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0345] In an implementation manner, the first indication information is specifically used to indicate that the terminal does not perform reselection on the target cell and / or the intra-frequency cell of the target cell when performing the first reselection restriction.

[0346] In an implementation manner, the first indication information is specifically used to indicate that the terminal performs reselection on the target cell and / or the intra-frequency cell of the target cell when not performing the first reselection restriction.

[0347] In an implementation manner, the first reselection restriction comprises at least one of the following: stopping taking the target cell as a candidate cell; stopping taking the intra-frequency cell of the target cell as a candidate cell; lowering a priority of the target cell; lowering a priority of the intra-frequency cell of the target cell; and lowering a priority of a frequency point corresponding to the target cell.

[0348] In an implementation manner, the first reselection restriction corresponds to a first parameter, and the first parameter comprises at least one of the following:

[0349] a time parameter of performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell, and a reselection number of performing the first reselection restriction on the target cell and / or the intra-frequency cell of the target cell.

[0350] In an implementation manner, the sending unit 201 is further configured to send second indication information to the terminal, the second indication information being used to indicate whether to cancel the first reselection restriction.

[0351] In an implementation manner, the second indication information is further used to determine that slice information of the terminal has been changed. Or the second indication information is further used to indicate to cancel the first reselection restriction.

[0352] In an implementation manner, the sending unit 201 is further configured to send slice information supported or not supported by the target cell.

[0353] As to the apparatuses in the above-mentioned embodiments, the specific manners in which various modules perform operations have been described in details in the embodiments of the method, and will not be described in details here.

[0354] Figure 11is a block diagram of an apparatus for cell reselection according to an exemplary embodiment. For example, apparatus 300 can be provided as a terminal, which can be a mobile phone, computer, digital broadcast terminal, messaging equipment, game console, tablet device, medical device, fitness device, personal digital assistant, etc.

[0355] Referring to Figure 11 Apparatus 300 can include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0356] The processing component 302 usually controls overall operations of the apparatus 300, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions to complete all or part of steps of the above-described methods. In addition, the processing component 302 can include one or more modules to facilitate interaction between the processing component 302 and other components. For example, the processing component 302 can include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0357] The memory 304 is configured to store various types of data to support operations of the apparatus 300. Examples of these data include instructions to perform any of the applications or methods on the apparatus 300, contact data, phonebook data, messages, pictures, videos, and so on. The memory 304 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0358] The power component 306 provides power to various components of the apparatus 300. The power component 306 can include a power supply management system, one or more power sources, and other components associated with generating, managing and distributing power for the apparatus 300.

[0359] The multimedia component 308 includes a screen providing an output interface between the device 300 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear camera can be a fixed optical lens system or have a focal length and optical zooming capability.

[0360] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) to receive an external audio signal when the device 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0361] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules, such as a keypad, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0362] The sensor component 314 includes one or more sensors to provide various state assessments for the device 300. For example, the sensor component 314 can detect an open / closed position of the device 300, relative positioning of components, such as a display and a keypad of the device 300, a change in position of the device 300 or a component of the device 300, presence or absence of user contact with the device 300, a change in orientation of the device 300 or acceleration / deceleration of the device 300, and temperature changes of the device 300. The sensor component 314 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 314 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 314 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0363] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network according to a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented according to Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0364] In an exemplary embodiment, the device 300 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic elements, for performing the above-described methods.

[0365] In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as the memory 304 including instructions, is also provided, which can be executed by the processor 320 of the device 300 to complete the above-described methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0366] Figure 12 is a block diagram of an apparatus 400 for cell reselection according to an exemplary embodiment. For example, the apparatus 400 can be provided as a network device, such as a base station, etc. Referring to Figure 12 , the apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by the memory 432, for storing instructions, such as application programs, executable by the processing component 422. The application programs stored in the memory 432 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute the instructions to perform the above-described methods.

[0367] The apparatus 400 can also include a power supply component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input output (I / O) interface 458. The apparatus 400 can operate according to an operating system stored in the memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

[0368] In an example embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 432 comprising instructions, is also provided, which can be executed by the processing component 422 of the apparatus 400 to complete the above method. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0369] It should be further understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0370] It should be further understood that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions of "first", "second", and the like can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0371] It should be further understood that although the operations are described in a specific order in the accompanying drawings in the embodiments of the present disclosure, it should not be understood as requiring the specific order or serial order to perform the operations, or requiring all the shown operations to obtain the desired results. In a specific environment, multi-tasking and parallel processing can be advantageous.

[0372] Other embodiments of the present disclosure will be apparent to those skilled in the art upon consideration of the specification and practice of the concepts disclosed herein. The applicant intends for this application to cover any variations, uses, or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such departures from the present disclosure that come within known or customary practice within the art to which the present disclosure pertains.

[0373] It should be understood that the present disclosure is not limited to the precise structures described and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A cell reselection method, characterized in that, The method is executed by a terminal and includes: Determine one or more network slices in the target cell that do not support the terminal; Determine whether to apply a first reselection restriction to the target cell and / or co-frequency cells of the target cell, wherein the first reselection restriction includes reducing the priority of the frequency point corresponding to the target cell; The method further includes: The first reselection restriction is determined to be met, the first reselection restriction being lifted including the terminal receiving second indication information, wherein the second indication information is used to determine that the terminal slice information has changed; or the second indication information is further used to indicate the lifting of the first reselection restriction; Determine whether to lift the first reselection restriction on the target cell and / or the co-frequency cells of the target cell.

2. The cell reselection method according to claim 1, characterized in that, The step of determining whether to apply a first reselection restriction to the target cell and / or its co-frequency cells includes: Determine to apply a first reselection restriction to the target cell and / or co-frequency cells of the target cell; It is determined that the target cell and / or its co-frequency cells will not be reselected.

3. The cell reselection method according to claim 1, characterized in that, The step of determining whether to apply a first reselection restriction to the target cell and / or its co-frequency cells includes: It is determined that the first reselection restriction will not be applied to the target cell and / or co-frequency cells of the target cell; Determine whether to reselect the target cell and / or its co-frequency cells.

4. The cell reselection method according to claim 1, characterized in that, The first reselection restriction also includes at least one of the following: Stop using the target cell as a candidate cell; Stop using co-frequency cells of the target cell as candidate cells; Lower the priority of the target cell; Reduce the priority of co-frequency cells of the target cell.

5. The cell reselection method according to claim 1, characterized in that, The step of determining whether to apply a first reselection restriction to the target cell and / or its co-frequency cells includes: The system receives a first indication message sent by a network device, the first indication message being used to indicate whether cell reselection should be performed on the target cell and / or the co-frequency cell of the target cell; Based on the first indication information, determine whether to apply the first reselection restriction to the target cell and / or its co-frequency cells.

6. The cell reselection method according to claim 1, characterized in that, The first reselection restriction corresponds to a first parameter, which includes at least one of the following: The time parameters for applying the first reselection constraint to the target cell and / or co-frequency cells of the target cell. The number of reselections subject to the first reselection limit is performed on the target cell and / or its co-frequency cells.

7. The cell reselection method according to claim 6, characterized in that, The step of determining whether to lift the first reselection restriction on the target cell and / or the co-frequency cells of the target cell includes: Reassess whether the first reselection constraint is met, the first reselection constraint including one or more network slices that do not support the terminal; It is determined that the first reselection restriction condition is not met; Remove the first reselection restriction on the target cell and / or the co-frequency cells of the target cell.

8. The cell reselection method according to claim 7, characterized in that, The first reselection restriction lifting condition includes at least one of the following: The terminal reverts to a process that does not perform cell reselection based on the one or more network slices; The terminal performs cell reselection based on a network slice that is different from the network slice currently performing cell reselection. The terminal receives a system message update instruction; The terminal enters the arbitrary cell selection state; The top-ranked neighborhood has changed; The terminal was moved out of the tracking area; The terminal was moved out of its registered area; The terminal receives a redirection message, which includes the frequency point whose reselection restriction has been lifted; The public land mobile network selected by the terminal has changed.

9. The cell reselection method according to claim 1, characterized in that, The terminal slice information includes at least one of the following: The list of network slices supported by the terminal; The list of frequency points corresponding to the network slices supported by the terminal; The frequency priority list corresponding to the network slices supported by the terminal; The terminal supports network slicing priorities.

10. The cell reselection method according to claim 1, characterized in that, Determining that the target cell does not support one or more network slices of the terminal includes: Receive slice information that the target cell supports or does not support. It is determined that the target cell does not support one or more network slices of the terminal.

11. A cell reselection method, characterized in that, The method is executed by a network device and includes: Send a first indication message to the terminal, the first indication message being used to instruct the terminal whether to perform a first reselection restriction on the target cell and / or the co-frequency cells of the target cell, wherein the target cell does not support one or more network slices of the terminal, and the first reselection restriction includes reducing the priority of the frequency point corresponding to the target cell; Send a second indication message to the terminal, wherein the second indication message is used to determine that the terminal slice information has changed; or the second indication message is also used to indicate that the first reselection restriction is lifted.

12. The cell reselection method according to claim 11, characterized in that, The first indication information is specifically used to instruct the terminal not to reselect the target cell and / or the co-frequency cells of the target cell when executing the first reselection restriction.

13. The cell reselection method according to claim 11, characterized in that, The first indication information is specifically used to instruct the terminal to reselect the target cell and / or the co-frequency cell of the target cell when the first reselection restriction is not executed.

14. The cell reselection method according to claim 11, characterized in that, The first reselection restriction includes at least one of the following: Stop using the target cell as a candidate cell; Stop using co-frequency cells of the target cell as candidate cells; Lower the priority of the target cell; Reduce the priority of co-frequency cells of the target cell.

15. The cell reselection method according to claim 11, characterized in that, The first reselection restriction corresponds to a first parameter, which includes at least one of the following: The time parameters for applying the first reselection constraint to the target cell and / or co-frequency cells of the target cell. The number of reselections subject to the first reselection limit is performed on the target cell and / or its co-frequency cells.

16. The cell reselection method according to claim 11, characterized in that, The method further includes: Send slice information that the target cell supports or does not support.

17. A cell reselection device, characterized in that, include: The processing unit is configured to determine one or more network slices that the target cell does not support the terminal; The processing unit is further configured to determine whether to apply a first reselection restriction to the target cell and / or co-frequency cells of the target cell, the first reselection restriction including reducing the priority of the frequency point corresponding to the target cell; The processing unit is further configured to determine that a first reselection restriction release condition is met, wherein the first reselection restriction release condition includes the terminal receiving second indication information, wherein the second indication information is used to determine that the terminal slice information has changed; or the second indication information is also used to indicate the release of the first reselection restriction. Determine whether to lift the first reselection restriction on the target cell and / or the co-frequency cells of the target cell.

18. A cell reselection device, characterized in that, include: The sending unit is configured to send first indication information to the terminal, the first indication information being used to instruct the terminal whether to perform a first reselection restriction on a target cell and / or co-frequency cells of the target cell, wherein the target cell does not support one or more network slices of the terminal, and the first reselection restriction includes reducing the priority of the frequency point corresponding to the target cell; The sending unit is further configured to: send a second indication information to the terminal, wherein the second indication information is used to determine that the terminal slice information has changed; or the second indication information is also used to indicate the lifting of the first reselection restriction.

19. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1-10.

20. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 11-16.

21. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the terminal's processor, enable the terminal to perform the cell reselection method according to any one of claims 1 to 10.

22. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the network device, enable the network device to perform the cell reselection method according to any one of claims 11 to 16.

Images