Cell reselection method, apparatus, device, and storage medium

Abstract

A cell reselection method, device, equipment and storage medium, relating to the technical field of communication. The method comprises: in the case that a target cell is not a suitable cell due to not meeting cell selection criteria, not considering the target cell as a reselection candidate cell; or not considering the target cell and other cells on the same frequency as reselection candidate cells; or regarding the priority of the frequency on which the target cell is located as the lowest priority (S310). The subsequent operation of the terminal device in the case that the target cell is not a suitable cell due to not meeting cell selection criteria is provided, avoiding the terminal device performing cell reselection and selecting the target cell which does not meet the cell selection criteria (such as S criteria), thereby avoiding causing the terminal device and the network device to fail to normally establish a connection, or avoiding causing the terminal device to fail to initiate a service due to too poor signal conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a cell reselection method, device, equipment and storage medium. BACKGROUND

[0002] In order to obtain better network services, etc., a terminal device can perform cell reselection.

[0003] In the related art, when performing cell reselection, the terminal device can find a cell that meets the reselection condition and has the best signal quality on each frequency according to the frequency priority order configured by the network device, as a target cell, and finally check whether the target cell is a suitable cell. If the target cell is a suitable cell, the terminal device reselects to the target cell; if the target cell is not a suitable cell, the terminal device performs subsequent operations in the manner discussed in the communication protocol.

[0004] However, for the case where the target cell is not a suitable cell because it does not meet the cell selection criterion (such as S criterion), the subsequent operation performed by the terminal device has not been mentioned and discussed. SUMMARY

[0005] The embodiments of the present disclosure provide a cell reselection method, device, equipment and storage medium, and provide the subsequent operation performed by the terminal device in the case where the target cell is not a suitable cell because it does not meet the cell selection criterion. The technical solution is as follows:

[0006] According to an aspect of the present disclosure, a cell reselection method is provided, applied to a terminal device, and the method comprises:

[0007] determining that a target cell does not meet a cell selection criterion;

[0008] determining that the target cell is not a suitable cell.

[0009] According to an aspect of the present disclosure, a cell reselection method is provided, applied to a network device, and the method comprises:

[0010] broadcasting a system message to the terminal device, the system message comprising first configuration information, the first configuration information being used to configure the terminal device to perform cell reselection when the target cell does not meet the cell selection criterion and is not a suitable cell.

[0011] According to an aspect of the present disclosure, a cell reselection device is provided, and the device comprises:

[0012] a determination module, configured to determine that a target cell does not meet a cell selection criterion, and determine that the target cell is not a suitable cell.

[0013] According to one aspect of the present disclosure, a cell reselection apparatus is provided, the apparatus comprising:

[0014] a sending module configured to broadcast a system message to a terminal device, the system message comprising first configuration information, the first configuration information being used to configure the terminal device to perform cell reselection when a target cell does not satisfy cell selection criteria and is not a suitable cell.

[0015] According to one aspect of the present disclosure, a cell reselection method is provided, the method being applied in a terminal device, the method comprising:

[0016] in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, not considering the target cell as a reselection candidate cell; or, in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, not considering the target cell and other cells on the same frequency as reselection candidate cells; the other cells on the same frequency referring to other cells on a frequency on which the target cell is located; or, in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, regarding a priority of the frequency on which the target cell is located as a lowest priority.

[0017] According to one aspect of the present disclosure, a cell reselection method is provided, the method being applied in a network device, the method comprising:

[0018] sending first configuration information to a terminal device; wherein the first configuration information is used to configure an operation performed by the terminal device in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria.

[0019] According to one aspect of the present disclosure, a cell reselection apparatus is provided, the apparatus comprising:

[0020] a performing module configured to: in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, not considering the target cell as a reselection candidate cell; or, in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, not considering the target cell and other cells on the same frequency as reselection candidate cells; the other cells on the same frequency referring to other cells on a frequency on which the target cell is located; or, in a case where a target cell is not a suitable cell due to not satisfying cell selection criteria, regarding a priority of the frequency on which the target cell is located as a lowest priority.

[0021] According to one aspect of the present disclosure, a cell reselection apparatus is provided, the apparatus comprising:

[0022] The sending module is configured to send first configuration information to the terminal device, wherein the first configuration information is used to configure the operation performed by the terminal device in the case that the target cell is not a suitable cell due to not meeting the cell selection criterion.

[0023] According to an aspect of the present disclosure, a terminal device is provided, which comprises a processor, and a transceiver connected to the processor, wherein the processor is configured to load and execute executable instructions to implement the cell reselection method on the terminal device side as described above.

[0024] According to an aspect of the present disclosure, a network device is provided, which comprises a processor, and a transceiver connected to the processor, wherein the processor is configured to load and execute executable instructions to implement the cell reselection method on the network device side as described above.

[0025] According to an aspect of the present disclosure, a computer readable storage medium is provided, which stores at least one instruction, at least one program, a code set or an instruction set, which is loaded and executed by a processor to implement the cell reselection method as described above.

[0026] The technical scheme provided by the embodiments of the present disclosure has at least the following beneficial effects:

[0027] By providing the subsequent operation performed by the terminal device in the case that the target cell is not a suitable cell due to not meeting the cell selection criterion, such as that the terminal device does not consider the target cell as a reselection candidate cell, or does not consider the target cell and other cells on the same frequency as reselection candidate cells, or considers the priority of the frequency on which the target cell is located as the lowest priority, the terminal device is prevented from performing cell reselection and selecting the target cell which does not meet the cell selection criterion (such as S criterion), thereby avoiding the failure of the terminal device to normally establish a connection with the network device, or avoiding the failure of the terminal device to initiate a service due to too poor signal conditions, and avoiding unnecessary power consumption and reselection delay caused by multiple times of performing cell reselection, and improving the efficiency of cell reselection. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical schemes in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a schematic diagram of a communication system provided by an exemplary embodiment of the present disclosure;

[0030] Figure 2 is a flowchart of a cell reselection method according to an example embodiment of the present disclosure;

[0031] Figure 3 is a flowchart of a cell reselection method according to another example embodiment of the present disclosure;

[0032] Figure 4 is a flowchart of a cell reselection method according to yet another example embodiment of the present disclosure;

[0033] Figure 5 is a flowchart of a cell reselection method according to still another example embodiment of the present disclosure;

[0034] Figure 6 is a structural block diagram of a cell reselection apparatus according to an example embodiment of the present disclosure;

[0035] Figure 7 is a structural block diagram of a cell reselection apparatus according to another example embodiment of the present disclosure;

[0036] Figure 8 is a structural block diagram of a cell reselection apparatus according to still another example embodiment of the present disclosure;

[0037] Figure 9 is a structural block diagram of a cell reselection apparatus according to yet another example embodiment of the present disclosure;

[0038] Figure 10 is a structural block diagram of a communication device according to an example embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] For the purpose of clarity, technical solutions and advantages of the present application will be further described in detail below with reference to the accompanying drawings.

[0040] The example embodiments will be described in detail below with reference to the accompanying drawings. The following description relates to the drawings, in which, unless otherwise described, the same numbers in different drawings indicate the same or similar components. The embodiments described in the following example embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0041] The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the description of the disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0042] It is to be understood that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is to be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0043] Reference is made to Figure 1 which shows a schematic diagram of a communication system provided by an embodiment of the disclosure. The communication system can include a terminal device 10 and a network device 20.

[0044] The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed in a cell managed by each network device 20. The terminal device 10 can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, and various forms of user equipment (User Equipment, UE), mobile stations (Mobile Station, MS) and the like. For the convenience of description, the above-mentioned devices are collectively referred to as terminal devices in the embodiments of the present application.

[0045] The network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The network device 20 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different wireless access technologies, the names of devices with network device functions can be different, for example, in a 5G NR system, it is called gNodeB or gNB. As communication technology evolves, the name of the network device may change. For ease of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as network devices. The network device 20 and the terminal device 10 can establish a connection through the air interface, so as to communicate through the connection, including the interaction of signaling and data. The number of network devices 20 can be more than two, and two adjacent network devices 20 can also communicate through wired or wireless means. The terminal device 10 can switch between different network devices 20, that is, establish a connection with different network devices 20.

[0046] The "5G NR system" in the embodiments of the present disclosure can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present disclosure can be applicable to the 5G NR system, and can also be applicable to the subsequent evolution system of the 5G NR system.

[0047] In order to obtain better network services, etc., the terminal device can perform cell reselection.

[0048] In the related art, when performing cell reselection, the terminal device can find a cell that meets the reselection condition and has the best signal quality on each frequency as a target cell according to the frequency priority order configured by the network device through SIB (System Information Broadcast), RRC (Radio Resource Control) Release message, Inter-RAT (Inter-Radio Access Type) inheritance, etc., and finally check whether the target cell is a suitable cell. If the target cell is a suitable cell, the terminal device reselects to the target cell; if the target cell is not a suitable cell, the terminal device performs subsequent operations in the manner discussed in the communication protocol.

[0049] In one example, cell reselection is divided into intra-frequency cell reselection, inter-frequency cell reselection, or inter-system cell reselection, and inter-frequency cell reselection can be further divided into high-priority inter-frequency cell reselection, low-priority inter-frequency cell reselection, and same-priority inter-frequency cell reselection according to different priorities. Since the same-priority configuration is not supported between inter-systems, inter-system cell reselection can be regarded as inter-frequency inter-priority cell reselection, and cell reselection is performed according to the high / low-priority inter-frequency cell reselection rule.

[0050] For the above type of cell reselection, the reselection criteria include: cell reselection measurement criteria, cell reselection criteria and ranking criteria. In the following, the three reselection criteria are introduced respectively.

[0051] I. Cell reselection measurement criteria.

[0052] In the case where the signal quality of the serving cell is higher than a certain threshold value (Srxlev > S IntraSearchP and Squal > S IntraSearchQ ), the terminal device can not perform intra-frequency measurement. Otherwise, the terminal device performs intra-frequency measurement.

[0053] If there is a high priority NR (New Radio) frequency point or inter-RAT frequency point, the terminal device performs high priority frequency point measurement.

[0054] If there is a same priority or low priority frequency point, in the case where the signal quality of the serving cell is less than a certain threshold value (Srxlev < S nonIntraSearchP and Squal < S nonIntraSearchQ ), the terminal device performs same priority or low priority frequency point measurement.

[0055] II. Cell reselection criteria.

[0056] If the terminal device stays in the current serving cell for more than 1 second, and the service quality of the intra-frequency or same priority inter-frequency cell is better than that of the serving cell within a period of time, the terminal device performs intra-frequency cell reselection or same priority inter-frequency cell reselection.

[0057] If the terminal device stays in the current serving cell for more than 1 second, and there is a high priority frequency point cell that meets Srxlev > Thresh X,HighP or Squal > Thresh X,HighQ within Treselection RAT , the terminal device performs high priority inter-frequency cell reselection.

[0058] If the terminal device stays in the current serving cell for more than 1 second, and the current serving cell meets Srxlev < Thresh Serving,LowP , if there is a low priority frequency point cell that meets Srxlev > Thresh X,LowP within Treselection RAT , the terminal device performs low priority inter-frequency cell reselection.

[0059] III. Ranking criteria.

[0060] For different types of cell reselection, if only one cell satisfies the corresponding cell reselection criterion, the cell is taken as the target cell; if there are multiple cells satisfying the corresponding cell reselection criterion, the terminal device performs a ranking operation to determine the cell with the highest ranking as the target cell.

[0061] The terminal device ranks the cells satisfying the cell reselection criterion and the S criterion, and determines the cell with the highest ranking based on the following criterion.

[0062] If the terminal device is configured with RangeToBestCell, the cell with the largest number of beams whose R value is between [Rbest-RangeToBestCell, Rbest] and exceeds the configured threshold is determined as the cell with the highest ranking; if there are multiple cells satisfying this condition, the cell with the highest R value is determined as the cell with the highest ranking.

[0063] If the terminal device is not configured with RangeToBestCell, the cell with the highest R value is determined as the cell with the highest ranking.

[0064] For the target cell determined by the above operation, the terminal device reads the system message of the target cell, and judges whether the target cell is a suitable cell based on the parameters in the system message. If the target cell is a suitable cell, the terminal device reselects to the target cell; if the target cell is not a suitable cell, the terminal device determines whether to perform reselection on other cells of the same frequency and subsequent operations in the manner discussed in the communication protocol.

[0065] In the related art, when the terminal device performs reselection evaluation on Srxlev and Squal of the neighboring cell, the reselection parameters broadcast by the serving cell are used, but in the final check, the terminal device needs to use the system parameters broadcast by the target cell to perform S criterion evaluation. Because different parameters are used, there is a case that for the target cell, the S criterion is satisfied when calculated based on the reselection system parameters broadcast by the serving cell, but the S criterion is not satisfied when calculated based on the system parameters broadcast by the target cell in the final check, which leads to the target cell not being a suitable cell.

[0066] However, for the case that the target cell is not a suitable cell due to not satisfying the cell selection criterion (such as the S criterion), the subsequent operation performed by the terminal device has not been mentioned and discussed. If there is no reselection restriction on the target cell and other cells of the same frequency, the terminal device may perform cell reselection again and finally check the target cell without considering other cells until the S criterion can be satisfied based on the system parameters broadcast by the target cell, or the cell with the highest ranking changes to reselect to other cells. However, this will cause the terminal device to perform multiple repeated and unnecessary cell reselections, thereby introducing unnecessary power consumption and reselection delay.

[0067] Based on this, the embodiment of the present application provides a cell reselection method, and provides subsequent operations performed by a terminal device in the case that a target cell is not a suitable cell due to not meeting cell selection criteria. In the following, the technical solutions provided by the present application are introduced and described through several embodiments.

[0068] Please refer to Figure 2 , which shows a flowchart of a cell reselection method provided by one embodiment of the present application. The method can be applied in Figure 1 the communication system shown. The method includes the following steps.

[0069] Step 210, the terminal device determines that the target cell does not meet the cell selection criteria.

[0070] Step 220, the terminal device determines that the target cell is not a suitable cell.

[0071] In one example, as Figure 2 shown, the above method further includes step 230, the terminal device does not take the target cell as a reselection candidate cell; or, the terminal device does not take the target cell and other cells on the same frequency as reselection candidate cells, wherein the other cells on the same frequency are other cells on the frequency point where the target cell is located; or, the terminal device sets the priority of the frequency point where the target cell is located as the lowest priority.

[0072] In one example, as Figure 2 shown, the above method further includes step 240, the network device broadcasts a system message to the terminal device, and the system message includes first configuration information, and the first configuration information is used for cell reselection.

[0073] Optionally, the first configuration information is used for configuring any one of the following: taking the target cell and / or other cells on the same frequency as reselection candidate cells; and setting the priority of the frequency point where the target cell is located as the lowest priority.

[0074] Optionally, the terminal device reselects a cell within a first time period, and / or the terminal device reselects a cell within a first reselection number of times.

[0075] In one example, as Figure 2 shown, the above method further includes step 250, the network device sends second configuration information to the terminal device, and the second configuration information includes at least one of the following: a first duration, the duration of the first time period is less than or equal to the first duration; a first reselection number; and a duration of the first time period.

[0076] In one example, the duration of the first time period is predefined by a communication protocol; or, the duration of the first time period is less than or equal to the first duration, and the first duration is predefined by a communication protocol.

[0077] In one example, the first reselection times is predefined by a communication protocol.

[0078] Optionally, the second configuration information is carried in at least one of the following messages: a system message, a radio resource control (RRC) release message.

[0079] In one example, the network device comprises a serving cell and / or a target cell.

[0080] It should be noted that the above description is related to Figure 2 Detailed descriptions of the embodiments will be given in the following examples, which will not be repeated here. It should be understood that in the Figure 2 In the embodiments, the steps 240 and 250 can be performed before the steps 210 and 220, or can be performed after the steps 210 and 220, which are not limited in the embodiments.

[0081] In summary, the technical scheme provided by the embodiments avoids the terminal device performing cell reselection and selecting the target cell which does not meet the cell selection criteria (such as S criteria), thereby avoiding the terminal device and the network device failing to normally establish a connection, or avoiding the terminal device failing to initiate a service due to too poor signal conditions, and avoiding unnecessary power consumption and reselection delay caused by multiple cell reselections, thereby improving the efficiency of cell reselection.

[0082] Please refer to Figure 3 which shows a flowchart of a cell reselection method provided by one embodiment of the present disclosure. The method can be applied to Figure 1 the communication system as shown. The method comprises the following steps.

[0083] In step 310, in the case that the target cell does not meet the cell selection criteria and is not a suitable cell, the terminal device does not consider the target cell as a reselection candidate cell; or in the case that the target cell does not meet the cell selection criteria and is not a suitable cell, the terminal device does not consider the target cell and other cells on the same frequency as reselection candidate cells; or in the case that the target cell does not meet the cell selection criteria and is not a suitable cell, the terminal device considers the priority of the frequency on which the target cell is located as the lowest priority.

[0084] In the cell reselection process, the terminal device can first determine a target cell through the reselection parameters broadcast by the serving cell, and then finally check whether the target cell is a suitable cell through the system message of the target cell. In an example, when finally checking whether the target cell is a suitable cell, the terminal device can determine whether the target cell is a suitable cell by checking whether the target cell meets the cell selection criterion. Optionally, the cell selection criterion includes but is not limited to the S criterion. For example, in the 5G NR system, the cell selection criterion includes the S criterion; in the subsequent evolution system of the 5G NR system, the cell selection criterion can include other criteria, and the embodiments of the present application do not limit this.

[0085] In an example, the cell selection criterion includes the S criterion, and the terminal device uses the S criterion to determine whether the target cell is suitable for camping. Optionally, the S criterion includes: Squal>0 and Srxlev>0. Squal is a cell selection quality value, and Squal=Q qualmeas –(Q qualmin +Q qualminoffset )-Qoffset temp , wherein Q qualmeas is a measured cell reference signal quality value, Q qualmin is a cell minimum signal quality requirement, Q qualminoffset is an offset, Qoffset temp is a temporary offset for a cell with connection establishment failure. Srxlev is a cell selection received power, and Srxlev=Q rxlevmeas –(Q rxlevmin +Q rxlevminoffset )–P compensation -Qoffset temp , wherein Q rxlevmeas is the power intensity (such as the RSRP (Reference Signal Receiving Power) value) of the measured cell reference signal, Q rxlevmin is a minimum received level, Q rxlevminoffset is an offset, P compensation is a power compensation value, Qoffset temp is a temporary offset for a cell with connection establishment failure.

[0086] Based on the above example, when the terminal device finally checks whether the target cell is a suitable cell, if the target cell meets the cell selection criterion, the terminal device determines that the target cell is a suitable cell and reselects to the target cell; if the target cell does not meet the cell selection criterion, the terminal device determines that the target cell is not a suitable cell.

[0087] In the embodiments of the present application, in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion, the terminal device performs any one of the following behaviors: does not consider the target cell as a reselection candidate cell, does not consider the target cell and other cells on the same frequency as reselection candidate cells, or considers the priority of the frequency on which the target cell is located as the lowest priority. The other cells on the same frequency refer to other cells on the frequency on which the target cell is located, that is, the frequency of the other cells on the same frequency is the same as that of the target cell.

[0088] Based on this, in one example, in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion, the terminal device does not consider the target cell as a reselection candidate cell; in another example, in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion, the terminal device does not consider the target cell and other cells on the same frequency as reselection candidate cells; in yet another example, in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion, the terminal device does not consider the other cells on the same frequency as reselection candidate cells; in still another example, in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion, the terminal device considers the priority of the frequency on which the target cell is located as the lowest priority.

[0089] The embodiments of the present application avoid the terminal device performing cell reselection and selecting the target cell that does not meet the cell selection criterion (such as the S criterion), thereby avoiding the failure of the terminal device and the network device to normally establish a connection or avoiding the failure to initiate a service due to too poor signal conditions, by providing the subsequent operation performed by the terminal device in the case that the target cell is not a suitable cell because it does not meet the cell selection criterion.

[0090] In one example, if the terminal device does not consider the target cell as a reselection candidate cell, the terminal device can remove the target cell from the reselection candidate cells and select the highest-ranked cell in the reselection candidate cells to continue the related operation of cell reselection; if the terminal device does not consider the target cell and other cells on the same frequency as reselection candidate cells, the terminal device can remove the target cell and the other cells on the same frequency from the reselection candidate cells and select the highest-ranked cell in the reselection candidate cells to continue the related operation of cell reselection; if the terminal device considers the priority of the frequency on which the target cell is located as the lowest priority, the terminal device can reorder the reselection candidate cells and select the highest-ranked cell in the reselection candidate cells to continue the related operation of cell reselection.

[0091] The embodiments of the present application do not limit the determination manner of the above-mentioned operation performed by the terminal device, in one example, the above-mentioned operation performed by the terminal device is configured by the network device, based on which, refer to Figure 4The step 310 further comprises a step 320, in which the network device sends the first configuration information to the terminal device; in another example, the above-mentioned operation performed by the terminal device is predefined by the communication protocol.

[0092] In the case that the above-mentioned operation performed by the terminal device is configured by the network device, the network device configures the above-mentioned operation performed by the terminal device through the first configuration information, which can be carried in the system message broadcasted by the network device, such as the SIB message. Optionally, the network device comprises a serving cell, or the network device comprises a target cell, or the network device comprises both the serving cell and the target cell. Optionally, the first configuration information is used to configure any of the following: whether the terminal device considers the target cell as a reselection candidate cell; whether the terminal device considers the other cell on the same frequency as a reselection candidate cell; whether the terminal device considers the target cell and the other cell on the same frequency as reselection candidate cells; whether the terminal device regards the frequency on which the target cell is located as the lowest priority.

[0093] In one example, the network device sends the first configuration information to the terminal device, which is used to configure whether the terminal device considers the target cell as a reselection candidate cell. Illustratively, when the first configuration information is used to configure the terminal device to consider the target cell as a reselection candidate cell, in the case that the target cell is not a suitable cell due to not satisfying the cell selection criterion, the terminal device still considers the target cell in the cell reselection process based on the first configuration information. Illustratively, when the first configuration information is used to configure the terminal device not to consider the target cell as a reselection candidate cell, in the case that the target cell is not a suitable cell due to not satisfying the cell selection criterion, the terminal device no longer considers the target cell in the cell reselection process based on the first configuration information.

[0094] Optionally, in the case that the first configuration information is only used to configure whether the terminal device considers the target cell as a reselection candidate cell, the terminal device considers whether to consider the other cell on the same frequency as a reselection candidate cell based on the predefinition of the communication protocol and / or its own implementation and / or the first configuration information. Illustratively, whether the first configuration information is used to configure the terminal device to consider the target cell as a reselection candidate cell or not, the terminal device does not consider the other cell on the same frequency as a reselection candidate cell based on the predefinition of the communication protocol and / or its own implementation; or, in the case that the first configuration information is used to configure the terminal device to consider the target cell as a reselection candidate cell, the terminal device also considers the other cell on the same frequency as a reselection candidate cell based on the first configuration information, and in the case that the first configuration information is used to configure the terminal device not to consider the target cell as a reselection candidate cell, the terminal device does not consider the other cell on the same frequency as a reselection candidate cell based on the first configuration information.

[0095] In another example, the network device sends first configuration information to the terminal device, the first configuration information is used to configure whether the terminal device considers the other intra-frequency cell as the reselection candidate cell. Illustratively, the first configuration information is used to configure the terminal device to consider the other intra-frequency cell as the reselection candidate cell, then in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion, the terminal device does not consider the target cell as the reselection candidate cell, and still considers the other intra-frequency cell in the cell reselection procedure based on the first configuration information. Illustratively, the first configuration information is used to configure the terminal device not to consider the other intra-frequency cell as the reselection candidate cell, then in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion, the terminal device does not consider the target cell as the reselection candidate cell, and no longer considers the other intra-frequency cell in the cell reselection procedure based on the first configuration information.

[0096] In yet another example, the network device sends first configuration information to the terminal device, the first configuration information is used to configure whether the terminal device considers the target cell and the other intra-frequency cell as the reselection candidate cell. Illustratively, the first configuration information is used to configure the terminal device to consider the target cell and the other intra-frequency cell as the reselection candidate cell, then in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion, the terminal device still considers the target cell and the other intra-frequency cell in the cell reselection procedure based on the first configuration information. Illustratively, the first configuration information is used to configure the terminal device not to consider the target cell and the other intra-frequency cell as the reselection candidate cell, then in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion, the terminal device no longer considers the target cell and the other intra-frequency cell in the cell reselection procedure based on the first configuration information.

[0097] In yet another example, the network device sends first configuration information to the terminal device, the first configuration information is used to configure whether the terminal device considers the priority of the frequency point where the target cell is located as the lowest priority. Illustratively, the first configuration information is used to configure the terminal device to consider the priority of the frequency point where the target cell is located as the lowest priority, then in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion, the terminal device considers the priority of the frequency point where the target cell is located as the lowest priority in the cell reselection procedure based on the first configuration information.

[0098] In conclusion, the technical scheme provided by the embodiments of the present application avoids the terminal device performing cell reselection and selecting the target cell which does not meet the cell selection criterion (such as S criterion), thereby avoiding the terminal device failing to normally establish connection with the network device, or avoiding the terminal device failing to initiate a service due to too poor signal condition, and avoiding unnecessary power consumption and reselection delay caused by multiple times of performing cell reselection, and improving the efficiency of cell reselection.

[0099] In the embodiments of the present application, the above operation (i.e., the step 310) performed by the terminal device can be valid under certain conditions, or can be cancelled when certain conditions are met.

[0100] First, the above operation performed by the terminal device under certain conditions is introduced and described.

[0101] In one possible implementation, the above operation performed by the terminal device is valid within a first time period in the case that the target cell is not a suitable cell due to not meeting the cell selection criterion.

[0102] The embodiments of the present application do not limit the determination manner of the above first time period, in one example, the above first time period is configured by the network device, based on which, please refer to Figure 4 , the step 310 further includes a step 330 of sending, by the network device, second configuration information to the terminal device; in another example, the above first time period is predefined by the communication protocol.

[0103] In the case that the above first time period is configured by the network device, the network device configures the above first time period through the second configuration information, the second configuration information can be carried in at least one of the following messages: system message, RRC release message. Optionally, the network device includes a serving cell, or the network device includes the target cell, or the network device includes the serving cell and the target cell.

[0104] In one example, when the network device configures or the communication protocol predefines the first time period, the network device can configure or the communication protocol can predefine the duration of the first time period. That is, the duration of the above first time period is configured by the network device through the second configuration information, or the duration of the above first time period is predefined by the communication protocol.

[0105] In another example, the network device configures or the communication protocol predefines the first time period. Specifically, the network device configures or the communication protocol predefines a maximum duration of the first time period. That is, the duration of the first time period is less than or equal to the first duration, and the first duration is configured by the network device through the second configuration information or is predefined by the communication protocol. For example, the network device configures or the communication protocol predefines the first duration, and the terminal device determines, based on the implementation of the terminal device, that the duration of the first time period is less than the first duration or is equal to the first duration in the case that the target cell is not a suitable cell because the cell selection criterion is not met.

[0106] For example, the network device configures or the communication protocol predefines the duration of the first time period as 300 seconds, and the above operation (i.e., step 310) performed by the terminal device is valid within the duration of 300 seconds. For example, the network device configures the duration of the first time period to be at most 300 seconds (i.e., the first duration is 300 seconds), and the above operation (i.e., step 310) performed by the terminal device is valid within the duration of at most 300 seconds. Thus, the terminal device can set the duration of the first time period to be equal to 300 seconds or less than 300 seconds based on the implementation of the terminal device. For example, the communication protocol predefines the duration of the first time period to be at most 300 seconds (i.e., the first duration is 300 seconds), and the above operation (i.e., step 310) performed by the terminal device is valid within the duration of at most 300 seconds. Thus, the terminal device can set the duration of the first time period to be equal to 300 seconds or less than 300 seconds based on the implementation of the terminal device.

[0107] In yet another example, the network device can also configure or the communication protocol can also predefine the starting time of the first time period. That is, the length and the starting time of the first time period are configured by the network device through the second configuration information, or the length and the starting time of the first time period are predefined by the communication protocol; or the length of the first time period is less than or equal to the first length, and the first length and the starting time of the first time period are configured by the network device through the second configuration information, or the first length and the starting time of the first time period are predefined by the communication protocol; or the length of the first time period is configured by the network device through the second configuration information, and the starting time of the first time period is predefined by the communication protocol; or the length of the first time period is predefined by the communication protocol, and the starting time of the first time period is configured by the network device through the second configuration information; or the length of the first time period is less than the first length, and the first length is configured by the network device through the second configuration information, and the starting time of the first time period is predefined by the communication protocol; or the length of the first time period is less than the first length, and the first length is predefined by the communication protocol, and the starting time of the first time period is configured by the network device through the second configuration information.

[0108] For example, if the network device only configures or the communication protocol only predefines the length of the first time period or the first length, in the case that the target cell is not a suitable cell because the cell reselection criterion is not met, the terminal device can immediately perform the above operation (i.e., the step 310) and can immediately start the timing of the first time period.

[0109] For example, if the network device configures or the communication protocol predefines the length and the starting time of the first time period, or the first length and the starting time of the first time period, in the case that the target cell is not a suitable cell because the cell reselection criterion is not met, the terminal device can start to perform the above operation (i.e., the step 310) and start the timing of the first time period at the starting time of the first time period predefined by the network device or the communication protocol.

[0110] It should be noted that the above operation performed by the terminal device is valid within the first time period, which can be implemented by a timer. That is, the running length of the timer is the length of the first time period, and the terminal device can start the timing of the first time period by starting the timer, and perform the above operation (i.e., the step 310) within the running length of the timer.

[0111] In another possible implementation, in the case that the target cell is not a suitable cell because the cell selection criterion is not met, the operation performed by the terminal device is valid within the first reselection number.

[0112] The first reselection number refers to the number of cell reselections. Embodiments of the present application do not limit the specific value of the first reselection number N (N equals 1, or N is an integer greater than 1). Optionally, the first reselection number is 1, or 2, or 3, or 4, and the like. Embodiments of the present application do not limit the determination manner of the first reselection number. In one example, the first reselection number is configured by the network device, based on which, please refer to Figure 4 The step 310 is preceded by step 330, in which the network device sends second configuration information to the terminal device; in another example, the first reselection number is predefined by the communication protocol.

[0113] In the case where the first reselection number is configured by the network device, the network device configures the first reselection number through the second configuration information, which can be carried in at least one of the following messages: system message, RRC release message. Optionally, the network device includes a serving cell, or the network device includes a target cell, or the network device includes a serving cell and a target cell.

[0114] It should be noted that, in embodiments of the present application, the above two conditions (the first time period and the first reselection number) can be used alone or in combination. Examples of using the two conditions alone are described in the above embodiments; when the two conditions are used in combination, in the case where the target cell is not a suitable cell due to not meeting the cell selection criterion, the above operation (i.e., step 310) performed by the terminal device is valid within the first time period and the first reselection number. That is, in the case where the target cell is not a suitable cell due to not meeting the cell reselection criterion, the terminal device will perform the above operation only when both the first time period and the first reselection number are met; if the first time period is exceeded but the first reselection number is not exceeded, or if the first reselection number is exceeded but the first time period is not exceeded, the terminal device will no longer perform the above operation.

[0115] Secondly, the above operation performed by the terminal device is introduced and described in the case where the operation is cancelled under certain conditions.

[0116] In one example, the terminal device cancels the above operation (i.e., step 310) in the case where the first condition is met. Embodiments of the present application do not limit the content of the first condition, which can include at least one of the following: the highest-ranked cell has changed, the third configuration information from the network device is received, the system message of the network device has been updated.

[0117] For the first condition, a change in the highest-ranked cell is included, optionally, the ranking includes at least one of the following: frequency priority ranking, R value ranking, beam number ranking. In one example, the highest-ranked cell has changed, i.e., the target cell is no longer the highest-ranked cell in the reselection candidate cell, the terminal device cancels the execution of the above operation (i.e., the above step 310), and continues to perform the related operation of cell reselection based on the current highest-ranked cell.

[0118] For the first condition, the third configuration information from the network device is received, please refer to Figure 5 , the third configuration information is used to configure the terminal device to cancel the execution of the above operation (i.e., the above step 310), and the third configuration information can be carried in at least one of the following messages: system message, RRC release message. Optionally, the network device includes a serving cell, or the network device includes a target cell, or the network device includes a serving cell and a target cell.

[0119] For the first condition, the system message of the network device is updated, optionally, the network device includes a serving cell, or the network device includes a target cell, or the network device includes a serving cell and a target cell. Illustratively, the system message of the serving cell is updated, the reselection parameters of the target cell in the system message broadcast by the serving cell are changed, resulting in that the target cell no longer meets the cell reselection criteria and no longer belongs to the reselection candidate cell, and the terminal device cancels the execution of the above operation (i.e., the above step 310).

[0120] It should be noted that for the above first condition, the terminal device can cancel the execution of the above operation (i.e., the above step 310) when any one, two or three of them are met, that is, the above three conditions (a change in the highest-ranked cell, receiving third configuration information from the network device, and updating the system message of the network device) can be combined in any way, and the present application does not limit this.

[0121] In summary, the technical scheme provided by the embodiments of the present application provides a time limit for the operation performed by the terminal device in the case that the target cell does not meet the cell reselection criteria and is not a suitable cell, or provides conditions for canceling the execution, so that the terminal device can flexibly perform cell reselection.

[0122] It should be noted that in the above embodiments, the cell reselection method provided by the embodiments of the present application is introduced and described from the perspective of interaction between the terminal device and the network device. In the above embodiments, the steps performed by the terminal device can be implemented as a cell reselection method on the terminal device side alone; the steps performed by the network device can be implemented as a cell reselection method on the network device side alone.

[0123] Figure 6 is a structural block diagram of a cell reselection apparatus provided by one example embodiment of the present disclosure, as Figure 6 shown, taking the apparatus for a terminal device as an example, the apparatus 600 comprises a determination module 610.

[0124] The determination module 610 is configured to determine that the target cell does not satisfy a cell selection criterion.

[0125] The determination module 610 is further configured to determine that the target cell is not a suitable cell.

[0126] In one example, as Figure 7 shown, the apparatus 600 further comprises a receiving module 620 configured to receive a system message broadcast by a network device, wherein the system message comprises first configuration information, and the first configuration information is used for cell reselection.

[0127] In one example, as Figure 7 shown, the apparatus 600 further comprises an execution module 630 configured to: not take the target cell as a reselection candidate cell; or not take the target cell and other cells on the same frequency as reselection candidate cells, wherein the other cells on the same frequency are other cells on a frequency point where the target cell is located; or set a priority of the frequency point where the target cell is located as a lowest priority.

[0128] In one example, the first configuration information is used to configure any one of the following: taking the target cell and / or the other cells on the same frequency as the reselection candidate cells; setting the priority of the frequency point where the target cell is located as the lowest priority.

[0129] In one example, the cell reselection apparatus reselects a cell within a first time period, and / or the cell reselection apparatus reselects a cell within a first reselection number of times.

[0130] In one example, as Figure 7 shown, the apparatus 600 further comprises a receiving module 620 configured to receive second configuration information sent by a network device, wherein the second configuration information comprises at least one of the following: a first time length, a time length of the first time period is less than or equal to the first time length; a first reselection number; and a time length of the first time period.

[0131] In one example, the time length of the first time period is predefined by a communication protocol; or the time length of the first time period is less than or equal to a first time length, and the first time length is predefined by a communication protocol.

[0132] In one example, the first reselection number is predefined by a communication protocol.

[0133] In an example, the second configuration information is carried in at least one of the following messages: a system message, a radio resource control (RRC) release message.

[0134] Figure 8 is a structural block diagram of a cell reselection apparatus provided by an example embodiment of the present disclosure, as shown in Figure 8 The apparatus 800 includes a sending module 810, taking the apparatus for a network device as an example.

[0135] The sending module 810 is configured to broadcast a system message to a terminal device, the system message including first configuration information, the first configuration information being used to configure the terminal device to perform cell reselection when a target cell does not meet cell selection criteria and is not a suitable cell.

[0136] In an example, the first configuration information is used to configure any of the following: the target cell and / or the same-frequency other cell as the reselection candidate cell; and the priority of the frequency point on which the target cell is located as the lowest priority. In an example, the sending module 810 is further configured to send second configuration information to the terminal device, the second configuration information being used to configure at least one of the following: a first time length; a first reselection number; and a time length of a first time period.

[0137] In an example, the second configuration information is carried in at least one of the following messages: a system message, an RRC release message.

[0138] Figure 9 is a structural block diagram of a cell reselection apparatus provided by an example embodiment of the present disclosure, as shown in Figure 9 The apparatus 900 includes an executing module 910, taking the apparatus for a terminal device as an example.

[0139] The executing module 910 is configured to: not consider the target cell as a reselection candidate cell when the target cell is not a suitable cell due to not meeting cell selection criteria; or not consider the target cell and a same-frequency other cell as a reselection candidate cell when the target cell is not a suitable cell due to not meeting cell selection criteria, the same-frequency other cell referring to another cell on the frequency point on which the target cell is located; or consider the priority of the frequency point on which the target cell is located as the lowest priority when the target cell is not a suitable cell due to not meeting cell selection criteria.

[0140] In an example, the operation performed by the terminal device in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion is configured by the network device through the first configuration information; or, the operation performed by the terminal device in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion is predefined by a communication protocol.

[0141] In an example, the first configuration information is carried in a system message broadcasted by the network device.

[0142] In an example, the first configuration information is used to configure any one of the following: whether the terminal device considers the target cell as the reselection candidate cell; whether the terminal device considers the same-frequency other cell as the reselection candidate cell; whether the terminal device considers the target cell and the same-frequency other cell as the reselection candidate cell; whether the terminal device regards the frequency point where the target cell is located as the lowest priority.

[0143] In an example, the operation performed by the terminal device in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion is valid within a first time period, and / or, the operation performed by the terminal device is valid within a first reselection number.

[0144] In an example, the length of the first time period is configured by the network device through second configuration information, or, the length of the first time period is predefined by a communication protocol; or, the length of the first time period is less than or equal to a first length, the first length is configured by the network device through second configuration information, or, the first length is predefined by a communication protocol.

[0145] In an example, the first reselection number is configured by the network device through second configuration information; or, the first reselection number is predefined by a communication protocol.

[0146] In an example, the second configuration information is carried in at least one of the following messages: a system message, an RRC release message.

[0147] In an example, the terminal device cancels the operation performed by the terminal device in the case that the target cell is not the suitable cell due to not satisfying the cell selection criterion in the case that a first condition is satisfied.

[0148] In an example, the first condition comprises at least one of the following: a change of a cell with a highest rank, the rank comprising at least one of the following: a frequency priority rank, an R value rank, a beam number rank; receiving third configuration information from the network device, the third configuration information being used to configure the terminal device to cancel performing: an operation performed by the terminal device in a case that the target cell is not a suitable cell due to not satisfying a cell selection criterion; a system message of the network device being updated.

[0149] In an example, the third configuration information is carried in at least one of the following: a system message, an RRC release message.

[0150] In an example, the network device comprises a serving cell and / or the target cell.

[0151] Figure 8 is a structural block diagram of a cell reselection apparatus provided by one example embodiment of the present disclosure, as Figure 8 shown, taking the apparatus used by a network device as an example, the apparatus 800 comprises:

[0152] a sending module 810, configured to send first configuration information to a terminal device, wherein the first configuration information is used to configure an operation performed by the terminal device in a case that a target cell is not a suitable cell due to not satisfying a cell selection criterion.

[0153] In an example, the first configuration information is carried in a system message broadcasted by the network device.

[0154] In an example, the first configuration information is used to configure any one of the following: whether the terminal device considers the target cell as the reselection candidate cell; whether the terminal device considers the same-frequency other cell as the reselection candidate cell; whether the terminal device considers the target cell and the same-frequency other cell as the reselection candidate cell; whether the terminal device regards a priority of a frequency on which the target cell is located as a lowest priority.

[0155] In an example, the sending module 810 is further configured to send second configuration information to the terminal device, the second configuration information being used to configure a first time length and / or a first reselection number.

[0156] In an example, the second configuration information is carried in at least one of the following: a system message, an RRC release message.

[0157] In an example, the sending module 810 is further configured to send third configuration information to the terminal device, the third configuration information being used to configure the terminal device to cancel performing an operation performed by the terminal device in a case that a target cell is not a suitable cell due to not satisfying a cell selection criterion.

[0158] In an example, the third configuration information is carried in at least one of the following messages: a system message, an RRC release message.

[0159] In an example, the network device comprises a serving cell and / or the target cell.

[0160] Figure 10 A structure diagram of a communication device 1000 (which can be implemented as the terminal device or the network device) provided by one example embodiment of the present disclosure is shown, the communication device 1000 comprises a processor 1010, a receiver 1020, a transmitter 1030, a memory 1040 and a bus 1050.

[0161] The processor 1010 comprises one or more processing cores, and the processor 1010 performs various functional applications and information processing by running software programs and modules.

[0162] The receiver 1020 and the transmitter 1030 can be implemented as a communication component, which can be a communication chip.

[0163] The memory 1040 is connected to the processor 1010 through the bus 1050.

[0164] The memory 1040 can be used to store at least one instruction, and the processor 1010 is configured to execute the at least one instruction to implement each step performed by the terminal device in the above method embodiments, or to implement each step performed by the network device in the above method embodiments.

[0165] In addition, the memory 1040 can be implemented by any type of volatile or nonvolatile storage devices or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic storage, a flash memory, a programmable read-only memory (PROM).

[0166] An exemplary embodiment of the present disclosure further provides a cell reselection system, which comprises a terminal device and a network device; the terminal device comprises the cell reselection apparatus as Figure 6 The cell reselection apparatus provided by the embodiment shown in the figure, or the cell reselection apparatus as Figure 7 The cell reselection apparatus provided by the embodiment shown in the figure, or the cell reselection apparatus as Figure 9 The cell reselection apparatus provided by the embodiment shown in the figure; the network device comprises the cell reselection apparatus as Figure 8 The cell reselection apparatus provided by the embodiment shown in the figure.

[0167] An exemplary embodiment of the present disclosure further provides a computer readable storage medium, which stores at least one instruction, at least one program, a code set or an instruction set, wherein the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement the steps performed by the terminal device in the cell reselection method provided by each method embodiment.

[0168] An exemplary embodiment of the present disclosure further provides a computer readable storage medium, which stores at least one instruction, at least one program, a code set or an instruction set, wherein the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement the steps performed by the network device in the cell reselection method provided by each method embodiment.

[0169] It should be understood that "multiple" mentioned herein refers to two or more. The association relationship of "and / or" describing the associated objects means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0170] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the disclosure be construed as including any paterns of this disclosure which are within the spirit and broad scope of the appended claims. The specification and examples are to be construed as merely illustrative of the present disclosure and not limitative of the scope of the present disclosure as construed in accordance with the appended claims.

[0171] It is to be understood that the disclosure is not limited to the precise construction hereinafter described and as shown in the attached drawings, and that various changes in shape, size and arrangements of parts thereof can be made without departing from the scope of the present disclosure. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A cell reselection method, characterized by, Applied to a terminal device, the method comprises: determining that a target cell does not meet a cell selection criterion; determining that the target cell is not a suitable cell; wherein, in the case that the target cell is not a suitable cell due to not meeting the cell selection criterion, the operation performed by the terminal device is valid within a first time period, and / or within a first reselection number of times; wherein the operation performed by the terminal device comprises: not taking the target cell as a reselection candidate cell; or, not taking the target cell and a same-frequency other cell as a reselection candidate cell, wherein the same-frequency other cell is another cell on a frequency point on which the target cell is located; or, setting a priority of the frequency point on which the target cell is located as a lowest priority.

2. The method of claim 1, wherein, The method further comprises: receiving a system message broadcast by a network device, the system message comprising first configuration information, the first configuration information being used for cell reselection.

3. The method of claim 2, wherein, The first configuration information is used to configure any of the following: taking the target cell and / or the same-frequency other cell as the reselection candidate cell; taking the priority of the frequency point on which the target cell is located as the lowest priority.

4. The method of claim 1, wherein, The method further comprises: receiving second configuration information sent by the network device, the second configuration information comprising at least one of the following: a first time length, a time length of the first time period being less than or equal to the first time length; the first reselection number of times; a time length of the first time period.

5. The method of claim 4, wherein, The second configuration information is carried in at least one of the following messages: a system message, a radio resource control (RRC) release message.

6. The method of claim 1, wherein: the time length of the first time period is predefined by a communication protocol; or the time length of the first time period is less than or equal to a first time length, the first time length being predefined by a communication protocol.

7. The method of claim 1, wherein, The first reselection number of times is predefined by a communication protocol.

8. The method according to any one of claims 2, 3, 4, 7, characterized in that, The network device comprises a serving cell and / or the target cell.

9. A cell reselection method, characterized by, Applied to a network device, the method comprises: broadcasting a system message to a terminal device, the system message comprising first configuration information, the first configuration information being used to configure the terminal device to perform cell reselection when a target cell does not meet a cell selection criterion and is not a suitable cell; wherein, in the case that the target cell is not a suitable cell due to not meeting the cell selection criterion, the operation performed by the terminal device is valid within a first time period, and / or within a first reselection number of times; wherein the operation performed by the terminal device comprises: not taking the target cell as a reselection candidate cell; or, not taking the target cell and a same-frequency other cell as a reselection candidate cell, wherein the same-frequency other cell is another cell on a frequency point on which the target cell is located; or, setting a priority of the frequency point on which the target cell is located as a lowest priority.

10. The method of claim 9, wherein, The first configuration information is used to configure any of the following: taking the target cell and / or the same-frequency other cell as the reselection candidate cell; taking the priority of the frequency point on which the target cell is located as the lowest priority.

11. The method according to claim 9 or 10, characterized in that, The method further comprises: The second configuration information comprises at least one of the following: The first time length; The first number of reselections; The time length of the first time period.

12. The method of claim 11, wherein, The second configuration information is carried in at least one of the following messages: a system message, a radio resource control (RRC) release message.

13. A cell reselection apparatus, characterized by comprising: The apparatus comprises: A determination module configured to determine that a target cell does not meet cell selection criteria and that the target cell is not a suitable cell; In the case where the target cell is not a suitable cell because it does not meet the cell selection criteria, the operations performed by the terminal device are valid for a first time period and / or for a first number of reselections; The operations performed by the terminal device comprise: Not taking the target cell as a reselection candidate cell; or Not taking the target cell and other cells on the same frequency as reselection candidate cells, wherein the other cells are cells on the frequency of the target cell; or Setting the priority of the frequency of the target cell to the lowest priority.

14. A cell reselection apparatus, characterized by comprising: The apparatus comprises: A sending module configured to broadcast a system message to a terminal device, wherein the system message comprises first configuration information for configuring the terminal device to perform cell reselection when a target cell does not meet cell selection criteria and is not a suitable cell; In the case where the target cell is not a suitable cell because it does not meet the cell selection criteria, the operations performed by the terminal device are valid for a first time period and / or for a first number of reselections; The operations performed by the terminal device comprise: Not taking the target cell as a reselection candidate cell; or Not taking the target cell and other cells on the same frequency as reselection candidate cells, wherein the other cells are cells on the frequency of the target cell; or Setting the priority of the frequency of the target cell to the lowest priority.

15. A terminal device, comprising: The terminal device comprises: A processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the cell reselection method of any one of claims 1 to 8.

16. A network device, comprising: The network device comprises: A processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the cell reselection method of any one of claims 9 to 12.

17. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program, which is loaded and executed by the processor to implement the cell reselection method of any one of claims 1 to 12.

Images