RELATIONSHIP INSTRUCTION, INFORMATION TRANSMISSION METHOD AND APPARATUS, COMMUNICATION APPARATUS AND STORAGE MEDIUM

Abstract

The present disclosure relates to a relationship indication, an information transmission method and device, a communication device, and a storage medium, and the relationship indication method includes a step of receiving an indication of a non-access stratum (NAS) in an access stratum (AS) and determining a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or adjacent areas of the area. The present disclosure enables the NAS of the terminal to transmit the mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or adjacent areas of the area to the AS, so that when the AS needs to perform an operation based on the slice group corresponding to a slice, the AS can accurately determine the slice group corresponding to a slice based on the mapping relationship.

Description

[Technical field]

[0001] The present disclosure relates to the field of communication technologies, and in particular to a relationship indicating method, an information transmitting method, a relationship indicating device, an information transmitting device, a communication device, and a computer-readable storage medium. [Background technology]

[0002] A network slice (abbreviated as slice) can provide a complete end-to-end virtual network for a specific user. By dividing network resources into multiple network slices, 5G network slices can provide differentiated services to users with different service needs (e.g., delay, reliability, capacity, isolation, and other features). This allows carrier networks to satisfy not only information consumption services, whose communication demand is characterized by "best effort transmission," but also production control services, whose communication demand is characterized by "deterministic transmission," and allocate logically or physically isolated network resources to services with different communication demands.

[0003] In addition to slices, slice groups are also proposed, and one or more slices can be mapped to a slice group. Currently, slice groups are set for tracking areas (TAs), and the mapping relationship between slice groups and slices in different TAs may be different, which may cause some problems when a terminal performs some operations at the edge of an adjacent TA. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, the embodiments of the present disclosure propose a relationship indication method, an information transmission method, a relationship indication device, an information transmission device, a communication device, and a computer-readable storage medium to solve the technical problems in the related art. [Means for solving the problem]

[0005] According to a first aspect of an embodiment of the present disclosure, a relationship indication method executed by a terminal is proposed, the method including a step of receiving an indication of a non-access stratum NAS in an access stratum AS and determining a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or an adjacent area of ​​the area.

[0006] According to a second aspect of an embodiment of the present disclosure, there is proposed an information transmission method performed by a network side device, the method including a step of transmitting information to the above-mentioned terminal and / or a step of receiving information transmitted by the above-mentioned terminal.

[0007] According to a third aspect of an embodiment of the present disclosure, a relationship indication device is proposed to be applied to a terminal, the device including a processing module configured to receive an indication of a non-access stratum NAS in an access stratum AS and determine a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or an adjacent area of ​​the area.

[0008] According to a fourth aspect of an embodiment of the present disclosure, an information transmission device to be applied to a network side device is proposed, the device including a communication module configured to transmit information to the above terminal and / or receive information transmitted by the above terminal.

[0009] According to a fifth aspect of an embodiment of the present disclosure, a communication device is proposed, the communication device including a processor and a memory for storing a computer program, and when the computer program is executed by the processor, the above-mentioned relationship indication method is realized.

[0010] According to a sixth aspect of an embodiment of the present disclosure, a communication device is proposed, the communication device including a processor and a memory for storing a computer program, and when the computer program is executed by the processor, the above-mentioned information transmission method is realized.

[0011] According to a seventh aspect of an embodiment of the present disclosure, there is proposed a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes the steps of the above-mentioned relationship indication method.

[0012] According to an eighth aspect of the embodiment of the present disclosure, there is provided a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes the steps of the above information transmission method.

[0013] According to an embodiment of the present disclosure, the NAS of a terminal can send to an AS a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or adjacent areas of the area, so that when the AS needs to perform an operation based on a slice group corresponding to a slice, it can accurately determine a slice group corresponding to a slice based on the mapping relationship. [Brief description of the drawings]

[0014] In order to more clearly describe the technical solutions of the embodiments of the present disclosure, the drawings to be used in the description of the embodiments are briefly described below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without exerting any creative efforts. [Figure 1] 1 is a schematic flow chart of a relationship indication method according to an embodiment of the present application; [Diagram 2] 4 is a schematic flow chart of another relationship indication method according to an embodiment of the present application; [Diagram 3] 4 is a schematic flow chart of another relationship indication method according to an embodiment of the present application; [Figure 4] 4 is a schematic flow chart of another relationship indication method according to an embodiment of the present application; [Diagram 5] 4 is a schematic flow chart of another relationship indication method according to an embodiment of the present application; [Figure 6] 1 is a schematic flowchart of an information transmission method according to an embodiment of the present application; [Figure 7] 1 is a schematic block diagram of a relationship indication device according to an embodiment of the present application; [Figure 8] 1 is a schematic block diagram of an information transmission device according to an embodiment of the present application; [Figure 9] 1 is a schematic block diagram of an apparatus for information transmission according to an embodiment of the present application; [Figure 10] FIG. 1 is a schematic block diagram of an apparatus for relationship indication according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The technical solutions in the embodiments of the present disclosure will be described below in detail and completely with reference to the drawings of the embodiments of the present disclosure, but it is clear that the described embodiments are not all the embodiments but only some of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without any creative labor belong to the scope of protection of the present disclosure.

[0016] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. The singular forms "a" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. In addition, the term "and / or" as used herein refers to any or all possible combinations of one or more of the associated listed items.

[0017] In the embodiments of the present disclosure, terms such as first, second, third, etc. may be used to describe various pieces of information, but it should be understood that these pieces of information should not be limited to these terms. These terms are merely used to distinguish between the same types of information. For example, the first piece of information can be referred to as the second piece of information, and similarly, the second piece of information can be referred to as the first piece of information, without departing from the scope of the embodiments of the present disclosure. Depending on the context, the word "if" as used herein can be interpreted as "when" or "in the case of" or "responsive to a determination."

[0018] For simplicity and ease of understanding, the terms "greater" or "smaller," "higher" or "lower" are used herein to express magnitude relationships. However, those skilled in the art will appreciate that the term "greater" also includes "greater than," "smaller" also includes "less than," and "higher" also includes "more than" and "lower" also includes "less than."

[0019] 1 is a schematic flow chart of a relationship indication method shown by an embodiment of the present application. The relationship indication method shown in this embodiment can be executed by a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, Internet of Things devices, etc. The terminal can communicate with a network side device, and the network side device includes, but is not limited to, network side devices in communication systems such as 4G, 5G, 6G, etc., such as base stations, core networks, etc.

[0020] As shown in FIG. 1, the relationship indication method may include the following steps.

[0021] In step S101, an access stratum (AS) receives an instruction from a non-access stratum (NAS) and determines a mapping relationship between slice groups and slices corresponding to the area in which the terminal is located and / or adjacent areas of the area.

[0022] In one embodiment, a slice group is set for each region, and the region includes, but is not limited to, a tracking area TA and a cell. In the following embodiment, the region is mainly TA.

[0023] A slice group may be set for each TA, i.e., a slice group is a per TA setting, and in this case, a mapping relationship between a slice group and a slice is also set for each TA. Therefore, different TAs can correspond to different mapping relationships. In this case, there are some problems when a terminal is located between adjacent TAs and performs some operations (including, but not limited to, cell reselection and random access).

[0024] Taking two adjacent tracking areas TA1 and TA2 as an example, in mapping relationship 1 corresponding to TA1, slice 1 is mapped to slice group 1, and in mapping relationship 2 corresponding to TA2, slice 1 is mapped to slice group 2.

[0025] When a terminal is located on the boundary between TA1 and TA2 and performs cell reselection, the terminal can determine the slice it wants to use, for example slice 1, and then determine a cell that supports slice 1 to perform cell reselection.

[0026] The network side device can indicate to the terminal, for example, frequency priority corresponding to slice information, slice information supported by a cell, etc., in a manner such as broadcasting or unicasting. Taking the slice information supported by a cell as an example, when the slice group supported by the cell is indicated, after the terminal selects a cell (e.g., a suitable cell or another cell), for example, the determined selected cell is cell 1, and in order to determine whether cell 1 supports slice 1 based on the slice group supported by the cell indicated by the network side device, the terminal first needs to determine the slice group corresponding to slice 1.

[0027] The mapping relationship corresponding to the TA is stored in the NAS, and the relevant operation of performing cell reselection is performed by the AS. In order to determine the slice group corresponding to slice 1, the AS of the terminal sends an identifier of slice 1, for example, S-NSSAI (Single-Network Slice Selection Assistance Information), to the NAS, and the NAS determines the slice group corresponding to slice 1 based on the mapping relationship, for example, determines an identifier slice group ID of the slice group corresponding to slice 1, and can send the slice group identifier to the AS. In this process, the mapping relationship corresponding to the TA stored in the NAS is transparent to the AS, that is, the AS does not know the mapping relationship corresponding to the TA and can only receive the slice group ID sent from the NAS, thereby determining the slice group corresponding to slice 1.

[0028] A problem that exists in this process is that when the terminal is located in TA1 but cell 1 is located in TA2, the NAS does not know that the terminal needs to determine whether cell 1 supports slice 1, so when determining a slice group corresponding to slice 1, the NAS may determine the slice group corresponding to slice 1 based on mapping relationship 1 corresponding to TA1. However, since cell 1 is located in TA2, the slice group corresponding to slice 1 should be determined based on mapping relationship 2 corresponding to TA2, and mapping relationship 2 corresponding to TA2 is not necessarily the same as mapping relationship 1 corresponding to TA1. Therefore, if the slice group corresponding to slice 1 is determined based on mapping relationship 1 corresponding to TA1, an error will occur in the determined slice packet, and the support status of cell 1 for slice 1 may not be accurately determined.

[0029] According to an embodiment of the present disclosure, the NAS of a terminal can send to an AS a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or adjacent areas of the area, so that when the AS needs to perform an operation based on a slice group corresponding to a slice, it can accurately determine the slice group corresponding to a slice based on the mapping relationship between the slice groups and slices.

[0030] Continuing with the above scenario as an example, according to an embodiment of the present disclosure, for example, the NAS sends to the AS a mapping relationship 1 between a slice group and a slice corresponding to TA1 where the terminal is located, and a mapping relationship 2 between a slice group and a slice corresponding to TA2 adjacent to TA1. The AS knows that when determining the slice group corresponding to slice 1, it needs to determine whether cell 1 supports slice 1, and can determine that cell 1 is located in TA2, so that the AS can accurately determine the slice group corresponding to slice 1 by determining the slice group corresponding to slice 1 based on the mapping relationship 2 corresponding to TA2, and can further accurately determine the support status of cell 1 for slice 1 based on the slice group supported by the cell (non-specific one or more cells) instructed by the network side.

[0031] In one embodiment, receiving an indication of a non-access stratum (NAS) at the access stratum (AS) includes receiving slice-related information at the AS transmitted from the NAS, wherein the slice-related information includes at least one of a slice, a slice priority, the mapping relationship, and a correspondence between an effective area of ​​effect of the mapping relationship and the mapping relationship.

[0032] In one embodiment, the NAS can send slice-related information to the AS, and the mapping relationship between the slice group and the slice can be included in the slice-related information.

[0033] In addition to the mapping relationships, the slice-related information may further include a correspondence between the effective effect area of ​​the mapping relationships and the mapping relationships, for example, one mapping relationship may correspond to one or more effective effect areas, and the form of the correspondence relationship includes, but is not limited to, a list, for example, the effective effect area corresponding to mapping relationship 1 is TA1, and the effective effect area corresponding to mapping relationship 2 is TA2. The effective effect area includes, but is not limited to, a cell and a tracking area TA.

[0034] Furthermore, the slice-related information may include a slice, e.g., a slice that the terminal desires to use, e.g., when the terminal needs to perform some service, it is desirable to use a slice corresponding to the service, and the slice-related information may include a slice priority of a slice (e.g., a slice that the terminal desires to use), e.g., a slice that the terminal desires to use includes multiple slices, and a priority relationship between these multiple slices can be determined based on the slice priority, and then, when performing a slice-related operation, e.g., when performing cell reselection based on the slice, the slices can be considered one by one based on the slice priority.

[0035] In one embodiment, the method further comprises performing cell reselection based on the slice-related information. The terminal can perform cell reselection based on the slice-related information, for example, during cell reselection, can determine a slice group corresponding to a slice based on a mapping relationship in the slice-related information.

[0036] 2 is a schematic flow chart of another relationship indication method according to an embodiment of the present application. As shown in FIG. 2, the method further includes the following steps:

[0037] In step S201, a frequency priority corresponding to a slice and / or a slice group is determined based on first instruction information transmitted from a network side device.

[0038] In one embodiment, the network side device can indicate to the terminal, via the first indication information, a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group, where the frequency priority can be used by the terminal to perform cell reselection, for example, when the terminal performs cell reselection, the frequencies can be considered one by one in order of increasing frequency priority.

[0039] Here, the slices and / or slice groups corresponding to the frequency priority include slices and / or slice groups supported by the terminal's current serving frequency point, and may also include slices and / or slice groups supported by adjacent frequencies of the current serving frequency point.

[0040] In one embodiment, the first instruction information is At least one of a System Information Block (SIB) and a Radio Resource Control (RRC) Release message is carried.

[0041] In one embodiment, the information related to the slice information included in the SIB may include information related to a slice group, and the information related to the slice information included in the RRCRelease message may include information related to a slice group (e.g., information related to an identifier of a slice group is indicated) or information related to a single slice (e.g., information related to an identifier S-NSSAI of a single slice is indicated, and hereinafter information related to a single slice will be described as information related to a slice).

[0042] Here, the information related to the slice information includes, but is not limited to, the frequency priority corresponding to the slice information and the slice information supported by the cell.

[0043] For example, when the information related to the slice information includes a frequency priority corresponding to the slice information, the first instruction information included in the SIB may indicate a frequency priority corresponding to a slice group, and the first instruction information included in the RRCRelease message may indicate a frequency priority corresponding to the slice group and / or a frequency priority corresponding to a slice.

[0044] For example, when the information related to slice information includes slice information supported by the cell, the second indication information included in the SIB may indicate slice groups supported by the cell, and the second indication information included in the RRCRelease message may indicate slice groups supported by the cell and / or slices supported by the cell.

[0045] In the following embodiment, first, the first instruction information will be described as an example, and then the second instruction information will be described as an example.

[0046] In one embodiment, when the first indication information is included (carried) in a SIB, the first indication information indicates a frequency priority corresponding to a slice group, and when the first indication information is included in a RRCRelease message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0047] Since the SIB is generally a message broadcast by a network side device, it may not necessarily be received by a specific terminal and may pose a certain security problem. Therefore, when the first instruction information is included in the SIB, it may indicate a frequency priority corresponding to a slice group rather than indicating a frequency priority corresponding to a specific slice.

[0048] On the other hand, since RRCRelease is a unicast message and is only received by a specific terminal, there generally are no security issues like SIB messages. Therefore, when the first instruction information is included in RRCRelease, it may indicate a frequency priority corresponding to a specific slice, or it may indicate a frequency priority corresponding to a slice group, and specifically can be set as needed.

[0049] 3 is a schematic flow chart of another relationship indication method according to an embodiment of the present application. As shown in FIG. 3, performing cell reselection based on the slice-related information includes the following steps:

[0050] In step S301, slices are selected one by one in descending order of slice priority.

[0051] In step S302, a frequency priority corresponding to the selected slice is determined.

[0052] In one embodiment, when a terminal performs cell reselection based on slice-related information, the terminal may select slices one by one in descending order of slice priority, and then determine a frequency priority corresponding to the selected slice.

[0053] In one embodiment, the method further includes the steps of selecting frequencies in order of decreasing frequency priority and determining a ranking of all cells corresponding to the selected frequencies; selecting a cell based on the ranking and determining whether the selected cell supports a selected slice; reselecting the selected cell in response to at least the selected cell supporting the selected slice being satisfied; and in response to the selected cell not supporting the selected slice, selecting a next ranked cell or selecting a next priority frequency if all cells corresponding to a selected frequency point have been traversed until it is determined that the selected cell supports the selected slice.

[0054] In one embodiment, after determining the frequency priority, cell reselection can be performed, and before cell reselection, the cell support status for the selected slice needs to be verified.

[0055] First, the frequency is selected in the order of the frequency priority, and a ranking of all cells corresponding to the selected frequency is determined, for example, the ranking can be determined based on the R criterion, and then a cell is selected based on the ranking, and it is determined whether the selected cell supports the selected slice.

[0056] In response to at least the selected cell supporting the selected slice being satisfied, reselect the selected cell, i.e., the conditions for reselecting the selected cell include at least the selected cell supporting the selected slice and may further include the selected cell satisfying a suitable cell determination condition; in response to the selected cell not supporting the selected slice, select a next ranking cell or select a next priority frequency if all cells corresponding to the selected frequency point have been traversed until it is determined that the selected cell supports the selected slice, and perform the above steps in this embodiment.

[0057] In one embodiment, the method further includes the steps of selecting frequencies in order of decreasing frequency priority and determining a ranking of all cells corresponding to the selected frequencies; selecting a highest ranked cell based on the ranking and determining whether the selected cell supports a selected slice; reselecting the highest ranked cell in response to at least the highest ranked cell supporting the selected slice being satisfied; and selecting a next priority frequency in response to the highest ranked cell not supporting the selected slice.

[0058] In one embodiment, after determining the frequency priority, cell reselection can be performed, and before cell reselection, the cell support status for the selected slice needs to be verified.

[0059] First, select frequencies in order of frequency priority, determine a ranking of all cells corresponding to the selected frequencies, and determine the ranking based on, for example, the R criterion. Select the cell with the highest ranking based on the ranking, and determine whether the selected cell supports the selected slice.

[0060] In response to at least the selected cell (i.e., the highest ranked cell) supporting the selected slice being satisfied, the selected cell is reselected, i.e. the conditions for reselecting the selected cell include at least the selected cell supporting the selected slice and may further include the selected cell satisfying a suitable cell determination condition, and in response to the selected cell not supporting the selected slice, a next priority frequency is selected and the above steps in this embodiment are performed.

[0061] In one embodiment, the reselection process mainly includes the following steps: in step A, select slices in descending order of slice priority, and determine frequency priorities corresponding to the selected slices; in step B, select frequencies in descending order of the determined frequency priorities, and determine a ranking of all cells corresponding to the selected frequencies (for example, determine the ranking based on the R criterion), for example, the frequency priority corresponding to the selected slice is that frequency f1 is higher than frequency f2, in this case, first perform steps B and C for f1, and if a cell supporting the selected slice has not been determined, perform steps B and C for f2, and in step C, select a cell based on the ranking, and determine whether the selected cell supports the selected slice; if the selected cell does not support the selected slice, select a cell with the next priority and determine whether the cell supports the selected slice, until a cell supporting the selected slice is determined or all cells corresponding to the ranking have been traversed; or, if the highest ranking cell is selected, if the selected cell does not support the selected slice, then execute step B and step C in a loop until a cell supporting the selected slice is determined or all frequencies corresponding to the selected slice have been traversed; or, if the highest ranking cell is selected, if the selected cell does not support the selected slice, then execute step B and step C in a loop until a cell supporting the selected slice is determined or all frequencies corresponding to the selected slice have been traversed; and, after traversing all frequency priorities corresponding to the frequency priorities corresponding to the selected slice, if a cell supporting the selected slice has not yet been determined, then execute step A and subsequent steps (e.g., step B and step C, or step B, step C and step D) in a loop until a cell supporting the selected slice is determined or all cells corresponding to the ranking have been traversed.

[0062] After traversing all slices corresponding to the slice priorities, if a cell supporting the selected slice has not yet been determined, cell reselection can be performed according to a legacy method, for example, based on the legacy frequency priority indicated by the network side (rather than the frequency priority corresponding to the slice information).

[0063] The first indication information may be included in the SIB or may be included in the RRCRelease message, and the first indication information included in the SIB and the first indication information included in the RRCRelease message may be the same or different. Therefore, when the first indication information is included in both the SIB and the RRCRelease message, it is necessary to consider an override between the first indication information in the SIB and the first indication information in the RRCRelease message.

[0064] In one embodiment, in response to the first indication information being included only in a SIB, the step of determining a frequency priority corresponding to the selected slice includes the steps of: determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship; determining a target slice group corresponding to the selected slice based on the current mapping relationship; determining a frequency priority corresponding to the target slice group based on the first indication information; and determining a frequency priority corresponding to the selected slice based on the frequency priority corresponding to the target slice group.

[0065] In one embodiment, when the first instruction information is included only in the SIB, when the first instruction information is included in the SIB, the first instruction information indicates the frequency priority corresponding to a slice group, so when determining the frequency priority corresponding to a slice, it is necessary to first determine the slice group corresponding to the slice.

[0066] For example, a current region where the terminal is located is first determined, and a current mapping relationship corresponding to the current region is determined based on the correspondence relationship in the slice-related information, and a target slice group corresponding to the selected slice is determined based on the current mapping relationship. According to another aspect, a frequency priority corresponding to a target slice group can be determined based on the first indication information, and a frequency priority corresponding to the selected slice can be determined based on the frequency priority corresponding to the target slice group.

[0067] In one embodiment, the first indication information is included in both a SIB and a RRCRelease message, and in response to the first indication information in the RRCRelease message indicating a frequency priority corresponding to a slice group, the step of determining a frequency priority corresponding to the selected slice includes a step of determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship, a step of determining a target slice group corresponding to the selected slice based on the current mapping relationship, and a step of determining a frequency priority corresponding to the target slice group based on the first indication information in the RRCRelease message, or determining a frequency priority corresponding to the target slice group based on the first indication information in the RRCRelease message, and if the frequency priority corresponding to the selected slice cannot be determined, determining a frequency priority corresponding to the target slice group based on the first indication information in the SIB.

[0068] In one embodiment, when the first indication information is included in both the SIB and the RRCRelease message, it is necessary to consider the overriding of the first indication information in the SIB and the first indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the frequency priority corresponding to the selected slice based on the first indication information in the SIB or the first indication information in the RRCRelease message.

[0069] In one embodiment, the first indication information in the RRCRelease message may override the first indication information included in the SIB. In this case, the first indication information included in the SIB may be ignored, and when the first indication information in the RRCRelease message indicates a frequency priority corresponding to a slice group, a current mapping relationship corresponding to a current area may be determined based on the correspondence relationship in the slice-related information, a target slice group corresponding to a selected slice may be determined based on the current mapping relationship, and then a frequency priority corresponding to the target slice group may be determined based on the first indication information in the RRCRelease message.

[0070] In one embodiment, the first indication information in the RRCRelease message and the first indication information included in the SIB can also be considered comprehensively. For example, a current mapping relationship corresponding to the current area is determined based on the correspondence relationship in the slice-related information, and a target slice group corresponding to the selected slice is determined based on the current mapping relationship. Then, a frequency priority corresponding to the target slice group is determined based on the first indication information in the RRCRelease message. If the frequency priority corresponding to the selected slice cannot be determined, a frequency priority corresponding to the target slice group is determined based on the first indication information in the SIB. This is advantageous in ensuring the determination of the frequency priority corresponding to the selected slice.

[0071] In one embodiment, the first indication information is included in both the SIB and the RRCRelease message, and in response to the first indication information in the RRCRelease message indicating a frequency priority corresponding to a slice, the step of determining a frequency priority corresponding to the selected slice includes a step of determining a frequency priority corresponding to the selected slice based on the first indication information in the RRCRelease message, or a step of first determining a frequency priority corresponding to the selected slice based on the first indication information in the RRCRelease message, and if the frequency priority corresponding to the selected slice cannot be determined, determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship, determining a target slice group corresponding to the selected slice based on the current mapping relationship, and determining a frequency priority corresponding to the target slice group based on the first indication information in the SIB.

[0072] In one embodiment, when the first indication information is included in both the SIB and the RRCRelease message, it is necessary to consider an override between the first indication information in the SIB and the first indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the frequency priority corresponding to the selected slice based on the first indication information in the SIB or the first indication information in the RRCRelease message.

[0073] In one embodiment, the first indication information in the RRCRelease message may override the first indication information included in the SIB, in which case, the first indication information included in the SIB may be ignored, and if the first indication information in the RRCRelease message indicates a frequency priority corresponding to a slice, the frequency priority corresponding to the selected slice may be determined directly based on the first indication information in the RRCRelease message.

[0074] In one embodiment, the first indication information in the RRCRelease message and the first indication information included in the SIB can also be considered comprehensively. For example, first, the frequency priority corresponding to the selected slice is determined based on the first indication information in the RRCRelease message. If the frequency priority corresponding to the selected slice cannot be determined, the current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and the target slice group corresponding to the selected slice is further determined based on the current mapping relationship. Then, the frequency priority corresponding to the target slice group can be determined based on the first indication information in the SIB. This is advantageous in ensuring the determination of the frequency priority corresponding to the selected slice.

[0075] In one embodiment, the first indication information is included in both the SIB and the RRCRelease message, and in response to the first indication information in the RRCRelease message indicating a frequency priority corresponding to a slice and a frequency priority corresponding to a slice group, the step of determining a frequency priority corresponding to the selected slice includes a step of determining a frequency priority corresponding to the selected slice based only on a frequency priority corresponding to the slice in the first indication information in the RRCRelease message, or a step of determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship, determining a target slice group corresponding to the selected slice based on the current mapping relationship, and determining a frequency priority corresponding to the target slice group based only on a frequency priority corresponding to the slice group in the first indication information in the RRCRelease message, or a step of first determining a frequency priority corresponding to the slice in the first indication information in the RRCRelease message based on the frequency priority corresponding to the slice in the first indication information in the RRCRelease message. , determining a frequency priority corresponding to the selected slice, and if the frequency priority corresponding to the selected slice cannot be determined, determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship, determining a target slice group corresponding to the selected slice based on the current mapping relationship, and determining a frequency priority corresponding to the target slice group based on first instruction information in the SIB; or determining a current mapping relationship corresponding to a current area in which the terminal is located based on the correspondence relationship, and determining a target slice group corresponding to the selected slice based on the current mapping relationship, and first determining a frequency priority corresponding to the target slice group based on a frequency priority corresponding to a slice group in the first instruction information in the RRCRelease message, and if the frequency priority corresponding to the selected slice cannot be determined, determining a frequency priority corresponding to the target slice group based on the first instruction information in the SIB.

[0076] In one embodiment, when the first indication information is included in both the SIB and the RRCRelease message, it is necessary to consider an override between the first indication information in the SIB and the first indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the frequency priority corresponding to the selected slice based on the first indication information in the SIB or the first indication information in the RRCRelease message.

[0077] In one embodiment, the first indication information in the RRCRelease message may override the first indication information included in the SIB, in which case the first indication information included in the SIB may be ignored.

[0078] For example, when the first indication information in the RRCRelease message indicates a frequency priority corresponding to a slice, the frequency priority corresponding to the selected slice can be determined directly based on the first indication information in the RRCRelease message.

[0079] For example, when the first instruction information in the RRCRelease message indicates a frequency priority corresponding to a slice group, a current mapping relationship corresponding to the current area can be determined based on the correspondence in the slice-related information, a target slice group corresponding to the selected slice can be determined based on the current mapping relationship, and a frequency priority corresponding to the target slice group can be determined based on the frequency priority corresponding to the slice group in the first instruction information in the RRCRelease message.

[0080] In one embodiment, the first indication information in the RRCRelease message and the first indication information included in the SIB may be taken into consideration in combination.

[0081] For example, when the first instruction information in the RRCRelease message indicates a frequency priority corresponding to a slice, first, a frequency priority corresponding to the selected slice is determined based on the first instruction information in the RRCRelease message, and if the frequency priority corresponding to the selected slice cannot be determined, a current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and further a target slice group corresponding to the selected slice is determined based on the current mapping relationship, and then a frequency priority corresponding to the target slice group is determined based on the first instruction information in the SIB.

[0082] For example, when the first instruction information in the RRCRelease message indicates a frequency priority corresponding to a slice group, a current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and a target slice group corresponding to the selected slice is further determined based on the current mapping relationship. Then, first, a frequency priority corresponding to the target slice group is determined based on the first instruction information in the RRCRelease message, and if the frequency priority corresponding to the selected slice cannot be determined, a frequency priority corresponding to the target slice group is determined based on the first instruction information in the SIB.

[0083] In addition, in the above embodiment regarding the first instruction information and the subsequent embodiment regarding the second instruction information, when the instruction information is included in both the SIB and the RRCRelease message, when considering an override, the override of the instruction information in the SIB by the instruction information in the RRCRelease message is mainly considered, but in practice, adjustments can be made based on needs, and an override of the instruction information in the RRCRelease message by the instruction information in the SIB may also be provided.

[0084] 4 is a schematic flow chart of another relationship indication method according to an embodiment of the present application. As shown in FIG. 4, the method further includes the following steps:

[0085] In step S401, frequencies are selected in the order of the frequency priority, and a ranking of all cells corresponding to the selected frequencies is determined.

[0086] In step S402, determine the highest ranked cell in descending order of ranking, determine whether the highest ranked cell supports the selected slice, and if the highest ranked cell supports the selected slice, reselect the highest ranked cell, and if the selected highest ranked cell does not support the selected slice, select the next priority frequency.

[0087] In one embodiment, after determining the frequency priorities corresponding to the selected slices, the frequencies may be selected in order of decreasing frequency priorities, and a ranking of all cells corresponding to the selected frequencies may be determined (e.g., ranking based on the R criterion).

[0088] Here, the ranking may be determined according to the R criterion, for example, factors considered include at least the signal quality of the cell, and the higher the signal quality, the higher the ranking.

[0089] It is also possible to select cells in descending order of ranking, and determine whether the selected cell supports the selected slice. If the selected cell supports the selected slice, the selected cell can be reselected, for example, if the selected cell is the highest ranking cell, the cell can be reselected; if the selected cell does not support the selected slice, the next priority frequency can be selected, i.e., for the next priority frequency, it is determined whether the highest ranking cell among all the corresponding cells supports the selected slice. This is advantageous to ensure that the reselected cell is the most suitable cell corresponding to the selected frequency, and further ensure good communication quality after the cell is reselected.

[0090] However, if the selected cell does not support the selected slice, another implementation of this embodiment may select a next-priority cell and determine whether the selected cell supports the selected slice, and so on until a cell that supports the selected slice is determined, or select a next-priority frequency when all cells corresponding to the selected frequency have been traversed, thereby allowing a relatively comprehensive consideration of all cells corresponding to the frequency.

[0091] 5 is a schematic flow chart of another relationship indication method according to an embodiment of the present application. As shown in FIG. 5, determining whether the selected cell supports the selected slice includes the following steps:

[0092] In step S501, determine whether the selected cell supports the selected slice based on second indication information sent from the network side device, where the second indication information indicates slice information supported by the cell.

[0093] In one embodiment, the network side device can indicate slice information supported by a cell to the terminal through the second indication information, where the cell indicated by the second indication information may include one or more cells, and the indicated cell may include a non-specific cell or a specific cell. After the terminal selects a cell, it can determine whether the selected cell supports the selected slice based on the second indication information.

[0094] In one embodiment, the second indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0095] In one embodiment, when the second indication information is included in a SIB, the second indication information indicates slice groups supported by the cell, and when the second indication information is included in a RRCRelease message, the second indication information indicates slices and / or slice groups supported by the cell.

[0096] In one embodiment, the information related to the slice information included in the SIB may include information related to a slice group, and the information related to the slice information included in the RRCRelease message may include information related to a slice group or may include information related to a single slice.

[0097] Here, the information related to the slice information includes, but is not limited to, the frequency priority corresponding to the slice information and the slice information supported by the cell.

[0098] For example, when the information related to the slice information includes a frequency priority corresponding to the slice information, the first instruction information included in the SIB may indicate a frequency priority corresponding to a slice group, and the first instruction information included in the RRCRelease message may indicate a frequency priority corresponding to the slice group and / or a frequency priority corresponding to a slice.

[0099] For example, if the information related to slice information includes slice information supported by a cell, the second indication information included in the SIB may indicate a slice group supported by the cell, and the second indication information included in the RRCRelease message may indicate a slice group supported by the cell and / or a slice supported by the indicating cell.

[0100] In one embodiment, when the second indication information is included in a SIB, the second indication information indicates slice groups supported by the cell, and when the first indication information is included in a RRCRelease message, the first indication information indicates slices and / or slice groups supported by the cell.

[0101] Since the SIB is generally a message broadcast by a network side device, it may not necessarily be received by a specific terminal and may have some security issues. Therefore, when the second indication information is included in the SIB, it may indicate a slice group supported by a cell rather than indicating a slice supported by a specific cell.

[0102] On the other hand, since RRCRelease is a unicast message and is only received by a specific terminal, there are generally no security issues like SIB messages. Therefore, when the second indication information is included in RRCRelease, it may indicate a specific slice supported by the cell, or it may indicate a slice group supported by the cell, and can be specifically set as needed.

[0103] In one embodiment, in response to the second indication information being included only in a SIB, the step of determining whether the selected cell supports the selected slice further includes the steps of: determining a slice group supported by the selected cell based on a slice group supported by the cell indicated by the second indication information; determining a target area to which the selected cell belongs based on area information transmitted from a network side device; determining a target mapping relationship corresponding to the target area based on the correspondence relationship; and determining a slice supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell.

[0104] In one embodiment, when the second indication information is included only in the SIB, when the second indication information is included in the SIB, the second indication information indicates the slice groups supported by the cell, so when determining the slices supported by the cell, it is necessary to first determine the slice group corresponding to the slice.

[0105] For example, it is possible to first determine the target area to which the selected cell belongs, and then determine the target mapping relationship corresponding to the target area based on the correspondence relationship in the slice-related information, and then determine the slices supported by the selected cell based on the target mapping relationship and the slice groups supported by the selected cell.

[0106] Here, determining the slices supported by the selected cell based on the target mapping relationship and the slice groups supported by the selected cell may mainly include the following two schemes.

[0107] Based on the target mapping relationship, determine a target slice group corresponding to the selected slice, and based on the target mapping relationship, determine a slice group supported by the cell, and then determine whether the target slice group and the slice group supported by the cell are the same, and if they are the same, it can be determined that the cell supports the selected slice, and if they are different, it can be determined that the cell does not support the selected slice (the same slice is not mapped to different groups).

[0108] Based on the target mapping relationship, determine that the slice group supported by the cell corresponds to the target slice, determine whether the selected slice is included in the target slice, and if it is included in the target slice, it can be determined that the cell supports the selected slice, and if it is not included in the target slice, it can be determined that the cell does not support the selected slice (the same slice is not mapped to different groups).

[0109] In addition, the area information transmitted from the network side device may include information on the TA (which may include the currently located TA and the adjacent TA of the currently located TA), such as an identifier TAC of the TA, and may also include information on the cell (which may include the currently located cell and the adjacent cell of the currently located cell), such as an identifier Cell ID of the cell. After determining the selected cell, the terminal may determine area information corresponding to the selected cell, and further determine a target area to which the selected cell belongs based on the area information corresponding to the selected cell. For example, if it is determined that the area information corresponding to the selected cell is an identifier of TA1, it may be determined that the selected cell belongs to TA1.

[0110] In one embodiment, in response to the second indication information being included in both the SIB and the RRCRelease message, and the second indication information in the RRCRelease message indicating a slice group supported by a cell, the step of determining whether the selected cell supports the selected slice includes determining a slice group supported by the selected cell based on the second indication information in the RRCRelease message, determining a target area to which the selected cell belongs based on area information transmitted from a network side device, determining a target mapping relationship corresponding to the target area based on the correspondence relationship, and determining whether the selected cell supports the selected slice based on the mapping relationship and the slice group supported by the selected cell. The method further includes the steps of: determining slices supported by the selected cell based on the second indication information in the RRCRelease message; or first determining a slice group supported by the selected cell based on the second indication information in the SIB; if the slice group supported by the selected cell cannot be determined, determining a slice group supported by the selected cell based on the second indication information in the SIB; determining a target area to which the selected cell belongs based on area information transmitted from a network side device; determining a target mapping relationship corresponding to the target area based on the correspondence relationship; and determining slices supported by the selected cell based on the mapping relationship and the slice groups supported by the selected cell.

[0111] In one embodiment, when the second indication information is included in both the SIB and the RRCRelease message, it is necessary to consider the overriding of the second indication information in the SIB and the second indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the slices supported by the cell based on the second indication information in the SIB or the second indication information in the RRCRelease message.

[0112] In one embodiment, the second indication information in the RRCRelease message may override the second indication information included in the SIB. In this case, the second indication information included in the SIB is ignored, and if the second indication information in the RRCRelease message indicates a slice group supported by a cell, the slice group supported by the selected cell is determined based on the second indication information in the RRCRelease message, the target area to which the selected cell belongs is determined based on the area information transmitted from the network side device, the target mapping relationship corresponding to the target area is determined based on the correspondence relationship in the slice-related information, and the slice supported by the selected cell is determined based on the mapping relationship and the slice group supported by the selected cell.

[0113] In one embodiment, the second indication information in the RRCRelease message and the second indication information included in the SIB may be considered in a comprehensive manner. For example, first, a slice group supported by a selected cell is determined based on the second indication information in the RRCRelease message, and if the slice group supported by the selected cell cannot be determined, a slice group supported by the selected cell is determined based on the second indication information in the SIB. Then, a target area to which the selected cell belongs is determined based on area information transmitted from a network side device, a target mapping relationship corresponding to the target area is determined based on the correspondence relationship, and a slice supported by the selected cell is determined based on the mapping relationship and the slice group supported by the selected cell. This is advantageous in that it only ensures the determination of the slice group supported by the selected cell.

[0114] In one embodiment, the second indication information is included in both the SIB and the RRCRelease message, and in response to the second indication information in the RRCRelease message indicating a slice supported by a cell, the step of determining whether the selected cell supports the selected slice further includes the steps of: determining a slice supported by the selected cell based on the second indication information in the RRCRelease message, or first determining a slice supported by the selected cell based on the second indication information in the RRCRelease message, and if the slice supported by the selected cell cannot be determined, determining a slice group supported by the selected cell based on the second indication information in the SIB, determining a target area to which the selected cell belongs based on area information transmitted from a network side device, determining a target mapping relationship corresponding to the target area based on the correspondence relationship, and determining a slice supported by the selected cell based on the mapping relationship and a slice group supported by the selected cell.

[0115] In one embodiment, when the second indication information is included in both the SIB and the RRCRelease message, it is necessary to consider the overriding of the second indication information in the SIB and the second indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the frequency priority corresponding to the selected slice based on the second indication information in the SIB or the second indication information in the RRCRelease message.

[0116] In one embodiment, the second indication information in the RRCRelease message may override the second indication information included in the SIB, in which case the second indication information included in the SIB may be ignored and the slices supported by the selected cell may be determined directly based on the second indication information in the RRCRelease message if the second indication information in the RRCRelease message indicates slices supported by the cell.

[0117] In one embodiment, the second indication information in the RRCRelease message and the second indication information included in the SIB can also be considered comprehensively. For example, first, determine the slice supported by the selected cell based on the second indication information in the RRCRelease message, and if the slice supported by the selected cell cannot be determined, determine the slice group supported by the selected cell based on the second indication information in the SIB, determine the target area to which the selected cell belongs based on the area information transmitted from the network side device, determine the target mapping relationship corresponding to the target area based on the correspondence relationship, and determine the slice supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell. This is advantageous in ensuring the determination of the slice supported by the selected cell.

[0118] In one embodiment, in response to the second indication information being included in both the SIB and the RRCRelease message, and the second indication information in the RRCRelease message indicating a slice group supported by a cell and a slice supported by a cell, determining whether the selected cell supports the selected slice includes the steps of: determining a slice supported by the selected cell based on a slice supported by a cell in the second indication information in the RRCRelease message; or determining a slice group supported by the selected cell based on a slice group supported by a cell in the second indication information in the RRCRelease message; determining a target area to which the selected cell belongs based on area information sent from a network side device; determining a target mapping relationship corresponding to the target area based on the correspondence relationship; and determining a target mapping relationship and a slice group supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell. determining a slice group supported by the selected cell based on the slice group, or first determining a slice group supported by the selected cell based on a slice group supported by a cell in the second indication information in the RRCRelease message, and if the slice group supported by the selected cell cannot be determined, determining a slice group supported by the selected cell based on the second indication information in the SIB; determining a target area to which the selected cell belongs based on area information sent from a network side device, and determining a target mapping relationship corresponding to the target area based on the correspondence relationship; and determining a slice group supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell; or determining a target area to which the selected cell belongs based on area information sent from a network side device, and determining a target mapping relationship corresponding to the target area based on the correspondence relationship;The method further includes: first determining a slice group supported by the selected cell based on a slice group supported by a cell in the second indication information in the RRCRelease message; if the slice group supported by the selected cell cannot be determined, determining a slice group supported by the selected cell based on the second indication information in the SIB; and determining a slice supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell.

[0119] In one embodiment, when the second indication information is included in both the SIB and the RRCRelease message, it is necessary to consider the overriding of the second indication information in the SIB and the second indication information in the RRCRelease message, i.e., it is necessary to consider whether to determine the frequency priority corresponding to the selected slice based on the second indication information in the SIB or the second indication information in the RRCRelease message.

[0120] In one embodiment, the second indication in the RRCRelease message may override the first indication included in the SIB, in which case the second indication included in the SIB may be ignored.

[0121] For example, if the second indication information in the RRCRelease message indicates slices supported by the cell, the slices supported by the selected cell can be determined directly based on the second indication information in the RRCRelease message.

[0122] For example, when the second indication information in the RRCRelease message indicates a slice group supported by a selected cell, the slice group supported by the selected cell can be determined based on the slice group supported by the cell in the second indication information in the RRCRelease message, then the target area to which the selected cell belongs can be determined based on area information transmitted from the network side device, the target mapping relationship corresponding to the target area can be determined based on the correspondence relationship, and finally the slices supported by the selected cell can be determined based on the mapping relationship and the slice group supported by the selected cell.

[0123] In one embodiment, the second indication information in the RRCRelease message and the second indication information included in the SIB may be taken into consideration in combination.

[0124] For example, when the second instruction information in the RRCRelease message indicates a slice supported by a cell, first, determine the slice supported by the selected cell based on the second instruction information in the RRCRelease message, and if the slice supported by the selected cell cannot be determined, determine the slice group supported by the selected cell based on the second instruction information in the SIB, determine the target area to which the selected cell belongs based on area information transmitted from the network side device, determine the target mapping relationship corresponding to the target area based on the correspondence relationship, and determine the slice supported by the selected cell based on the mapping relationship and the slice group supported by the selected cell.

[0125] For example, when the second instruction information in the RRCRelease message indicates a slice group supported by a cell, a target mapping relationship corresponding to the target area is determined based on the corresponding relationship in slice-related information, and then, first, a slice group supported by the selected cell is determined based on the slice group supported by the cell in the second instruction information in the RRCRelease message; if the slice group supported by the selected cell cannot be determined, a slice group supported by the selected cell is determined based on the second instruction information in the SIB, and a slice supported by the selected cell is determined based on the mapping relationship and the slice group supported by the selected cell.

[0126] The above embodiments have described that when a NAS sends a mapping relationship between slice groups and slices to an AS, if the SIB includes information related to slice information and the RRCRelease message also includes information related to slice information, an override issue between the information related to slice information in the SIB and the information related to slice information in the RRCRelease message is determined.

[0127] Below, we will explain the overriding problem between information related to slice information in the SIB and information related to slice information in the RRCRelease message in some embodiments when the NAS does not send the mapping relationship between slice groups and slices to the AS, and the NAS only instructs the AS of the slice group identifier corresponding to the slice.

[0128] For example, take the information related to the slice information as an example, which is a frequency priority corresponding to the slice information (which can be replaced with slice information supported by a cell).

[0129] In one embodiment, the SIB indicates a frequency priority corresponding to a slice group, and the RRCRelease message also indicates a frequency priority corresponding to a slice group.

[0130] The frequency priority corresponding to the slice group indicated in the SIB is ignored, a current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and a target slice group corresponding to the selected slice is further determined based on the current mapping relationship, and then a frequency priority corresponding to the target slice group is determined based on the frequency priority corresponding to the slice group indicated by the RRCRelease message.

[0131] Alternatively, the frequency priority corresponding to the slice group indicated by the RRCRelease message and the frequency priority corresponding to the slice group indicated by the SIB can be comprehensively considered. For example, a current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and a target slice group corresponding to the selected slice is determined based on the current mapping relationship. Then, a frequency priority corresponding to the target slice group is determined based on the frequency priority corresponding to the slice group indicated by the RRCRelease message. If the frequency priority corresponding to the selected slice cannot be determined, a frequency priority corresponding to the target slice group is determined based on the frequency priority corresponding to the slice group indicated by the SIB.

[0132] In one embodiment, the SIB indicates a frequency priority corresponding to a slice group, and the RRCRelease message indicates a frequency priority corresponding to a slice.

[0133] Because the NAS indicates only the slice group identifier corresponding to the slice to the AS, the AS cannot understand the frequency priority corresponding to the slice indicated by the RRCRelease message.

[0134] Therefore, a current mapping relationship corresponding to a current region can be determined based on the correspondence relationship in the slice-related information, a target slice group corresponding to a selected slice can be determined based on the current mapping relationship, and then a frequency priority corresponding to the target slice group can be determined based on the frequency priority corresponding to the slice group indicated by the SIB. In such a case, the frequency priority corresponding to the slice group indicated by the SIB is equivalent to overriding the frequency priority corresponding to the slice group indicated by the RRCRelease message.

[0135] Alternatively, it may be determined that the legacy frequency priority indicated by the SIB is used for cell reselection. In this case, the frequency priority corresponding to the slice group indicated by the RRCRelease message is equivalent to overriding the frequency priority corresponding to the slice group indicated by the SIB, but since the AS cannot understand the frequency priority corresponding to the slice indicated by the RRCRelease message, it rolls back to performing cell reselection based on the legacy frequency priority indicated by the SIB.

[0136] In one embodiment, the SIB indicates a frequency priority corresponding to a slice group, and the RRCRelease message indicates a frequency priority corresponding to a slice group and a slice.

[0137] The frequency priority corresponding to the slice group indicated in the SIB is ignored, a current mapping relationship corresponding to the current area is determined based on the correspondence in the slice-related information, and a target slice group corresponding to the selected slice is further determined based on the current mapping relationship, and then a frequency priority corresponding to the target slice group is determined based on the frequency priority corresponding to the slice group indicated by the RRCRelease message.

[0138] Or, ignore the frequency priority corresponding to the slice group indicated in the SIB, determine a current mapping relationship corresponding to the current area based on the correspondence in the slice-related information, and further determine a target slice group corresponding to the selected slice based on the current mapping relationship, and then preferentially determine a frequency priority corresponding to the target slice group based on the frequency priority corresponding to the slice group indicated by the RRCRelease message. If the frequency priority corresponding to the selected slice cannot be determined, determine that the legacy frequency priority indicated by the SIB is used for cell reselection.

[0139] Alternatively, determine a current mapping relationship corresponding to the current region based on the correspondence relationship in the slice-related information, further determine a target slice group corresponding to the selected slice based on the current mapping relationship, and then preferentially determine a frequency priority corresponding to the target slice group based on a frequency priority corresponding to the slice group indicated by the RRCRelease message. If the frequency priority corresponding to the selected slice cannot be determined, determine a frequency priority corresponding to the target slice group based on a frequency priority corresponding to the slice group indicated by the SIB.

[0140] 6 is a schematic flow chart of an information transmission method according to an embodiment of the present application. The information transmission method according to the embodiment can be performed by a network side device, which can communicate with a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices, and the network side device includes, but is not limited to, network side devices in communication systems such as 4G, 5G, 6G, etc., such as base stations and core networks.

[0141] As shown in FIG. 6, the relationship indication method may include the following steps.

[0142] In step S601, information is transmitted to a terminal according to any of the above embodiments, and / or information transmitted by the terminal according to any of the above embodiments is received, and the terminal can execute a relationship indication method according to any of the above embodiments.

[0143] In one embodiment, transmitting information to a terminal described in any of the above embodiments includes transmitting first indication information to the terminal for indicating a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0144] In one embodiment, the first indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0145] In one embodiment, when the first indication information is included in a SIB, the first indication information indicates a frequency priority corresponding to a slice group, and when the first indication information is included in a RRCRelease message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0146] Since the SIB is generally a message broadcast by a network side device, it may not necessarily be received by a specific terminal and may pose a certain security problem. Therefore, when the first instruction information is included in the SIB, it may indicate a frequency priority corresponding to a slice group rather than indicating a frequency priority corresponding to a specific slice.

[0147] On the other hand, since RRCRelease is a unicast message and is only received by a specific terminal, there generally are no security issues like SIB messages. Therefore, when the first instruction information is included in RRCRelease, it may indicate a frequency priority corresponding to a specific slice, or it may indicate a frequency priority corresponding to a slice group, and specifically can be set as needed.

[0148] In one embodiment, transmitting information to a terminal described in any of the above embodiments includes transmitting second indication information to the terminal for indicating slice information supported by the cell.

[0149] In one embodiment, the second indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0150] In one embodiment, when the second indication information is included in a SIB, the second indication information indicates slice groups supported by the cell, and when the second indication information is included in a RRCRelease message, the second indication information indicates slices and / or slice groups supported by the cell.

[0151] Since the SIB is generally a message broadcast by a network side device, it may not necessarily be received by a specific terminal and may have some security issues. Therefore, when the second indication information is included in the SIB, it may indicate a slice group supported by a cell rather than indicating a slice supported by a specific cell.

[0152] On the other hand, since RRCRelease is a unicast message and is only received by a specific terminal, there are generally no security issues like SIB messages. Therefore, when the second indication information is included in RRCRelease, it may indicate a specific slice supported by the cell, or it may indicate a slice group supported by the cell, and can be specifically set as needed.

[0153] In one embodiment, transmitting information to the terminal described in any of the above embodiments further includes transmitting area information to the terminal for the terminal to determine a target area to which the selected cell belongs.

[0154] In one embodiment, the region information includes at least one of a Cell Identifier (Cell ID) and a Tracking Area Identifier (TAC).

[0155] The area information transmitted from the network side device may include information on the TA (which may include the currently located TA and the neighboring TAs of the currently located TA), such as a TA identifier TAC, and may also include information on the cell (which may include the currently located cell and the neighboring cells of the currently located cell), such as a cell identifier Cell ID.

[0156] After determining the selected cell, the terminal may determine area information corresponding to the selected cell, and further determine a target area to which the selected cell belongs based on the area information corresponding to the selected cell. For example, if the terminal determines that the area information corresponding to the selected cell is an identifier of TA1, it may determine that the selected cell belongs to TA1.

[0157] Corresponding to the above-mentioned embodiments of the relationship indicating method and information transmitting method, the present disclosure further provides embodiments of a relationship indicating device and an information transmitting device.

[0158] 7 is a schematic block diagram of a relationship indication device shown by an embodiment of the present application. The relationship indication device shown in this embodiment can be applied to a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, Internet of Things devices, etc. The terminal can communicate with a network side device, and the network side device includes, but is not limited to, network side devices in communication systems such as 4G, 5G, 6G, etc., such as base stations, core networks, etc.

[0159] As shown in FIG. 7, the relationship indication device may include a processing module 701 configured to receive a non-access stratum (NAS) indication in an access stratum (AS) and determine a mapping relationship between slice groups and slices corresponding to the area in which the terminal is located and / or adjacent areas of the area.

[0160] In one embodiment, the processing module is configured to receive slice-related information sent from the NAS at the AS, where the slice-related information includes at least one of a slice, a slice priority of the slice, the mapping relationship, and a correspondence between the effective area of ​​effect of the mapping relationship and the mapping relationship.

[0161] In one embodiment, the processing module is further configured to perform cell reselection based on the slice-related information.

[0162] In one embodiment, the processing module is further configured to determine, based on first indication information sent from a network side device, a frequency priority corresponding to a slice and / or a slice group.

[0163] In one embodiment, the first indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0164] In one embodiment, when the first indication information is included in a SIB, the first indication information indicates a frequency priority corresponding to a slice group, and when the first indication information is included in a RRCRelease message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0165] In one embodiment, the processing module is configured to select slices one by one in order of decreasing slice priority and determine a frequency priority corresponding to the selected slices.

[0166] In one embodiment, the processing module is further configured to select frequencies in order of decreasing frequency priority, determine a ranking of all cells corresponding to the selected frequencies, select a cell based on the ranking, determine whether the selected cell supports a selected slice, reselect the selected cell in response to at least the selected cell supporting the selected slice being satisfied, and in response to the selected cell not supporting the selected slice, select a next ranked cell or select a next priority frequency if all cells corresponding to the selected frequency point have been traversed.

[0167] In one embodiment, the processing module is further configured to select frequencies in order of decreasing frequency priority, determine a ranking of all cells corresponding to the selected frequencies, select a highest ranked cell based on the ranking, determine whether the selected cell supports a selected slice, reselect the highest ranked cell in response to at least the highest ranked cell supporting the selected slice being satisfied, and select a next priority frequency in response to the highest ranked cell not supporting the selected slice.

[0168] In one embodiment, the processing module is configured to determine whether the selected cell supports the selected slice based on second indication information sent from the network side device, where the second indication information indicates slice information supported by the cell.

[0169] In one embodiment, the second indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0170] In one embodiment, when the second indication information is included in a SIB, the second indication information indicates slice groups supported by the cell, and when the second indication information is included in a RRCRelease message, the second indication information indicates slices and / or slice groups supported by the cell.

[0171] 8 is a schematic block diagram of an information transmission device according to an embodiment of the present application. The information transmission device according to this embodiment can be applied to a network side device, which can communicate with a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices, and the network side device includes, but is not limited to, network side devices in communication systems such as 4G, 5G, and 6G, such as base stations and core networks.

[0172] As shown in FIG. 8, the information transmission device may include a communication module 801 configured to transmit information to a terminal described in any of the above embodiments and / or receive information transmitted by a terminal described in any of the above embodiments.

[0173] In one embodiment, the communication module is configured to send first indication information to the terminal for indicating a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0174] In one embodiment, the first indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0175] In one embodiment, when the first indication information is included in a SIB, the first indication information indicates a frequency priority corresponding to a slice group, and when the first indication information is included in a RRCRelease message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

[0176] In one embodiment, the communication module is configured to send second indication information to the terminal for indicating slice information supported by a cell.

[0177] In one embodiment, the second indication information is included in at least one of a System Information Block (SIB) and a Radio Resource Control Release (RRCRelease) message.

[0178] In one embodiment, when the second indication information is included in a SIB, the second indication information indicates slice groups supported by the cell, and when the second indication information is included in a RRCRelease message, the second indication information indicates slices and / or slice groups supported by the cell.

[0179] In one embodiment, the communication module is further adapted to transmit region information to the terminal for the terminal to determine a target region to which the selected cell belongs.

[0180] In one embodiment, the region information includes at least one of a Cell Identifier (Cell ID) and a Tracking Area Identifier (TAC).

[0181] The specific manner of performing the operations of each module of the apparatus in the above embodiment has already been described in detail in the related method embodiment, and will not be described in detail here.

[0182] The device embodiments basically correspond to the method embodiments, so that the relevant points may be described with reference to some of the method embodiments. The above-described device embodiments are merely schematic, and the modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed among multiple network modules. According to actual needs, some or all of the modules may be selected to achieve the purpose of the solution of the present embodiment. Those skilled in the art can understand and implement it without paying creative labor.

[0183] An embodiment of the present disclosure further proposes a communication device including a processor and a memory for storing a computer program, wherein when the computer program is executed by the processor, the relationship indication method described in any of the above embodiments is realized.

[0184] An embodiment of the present disclosure further proposes a communication device including a processor and a memory for storing a computer program, and when the computer program is executed by the processor, the information transmission method described in any of the above embodiments is realized.

[0185] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes the steps of the relationship indication method described in any of the above embodiments.

[0186] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program, which, when executed by a processor, realizes the steps of the information transmission method described in any of the above embodiments.

[0187] As shown in Fig. 9, Fig. 9 is a schematic block diagram of an apparatus 900 for information transmission according to an embodiment of the present disclosure. The apparatus 900 can be provided as a base station. Referring to Fig. 9, the apparatus 900 includes a processing component 922, a wireless transmit / receive component 924, an antenna component 926, and a signal processing unit specific to the wireless interface, and the processing component 922 can further include one or more processors. One processor of the processing component 922 is configured to realize the information transmission method described in any of the above embodiments.

[0188] 10 is a schematic block diagram of an apparatus 1000 for relationship indication according to an embodiment of the present disclosure. For example, the apparatus 1000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0189] Referring to FIG. 10, the device 1000 may include one or more of the following components: a processing component 1002, a memory 1004, a power component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, and a communication component 1016.

[0190] The processing component 1002 typically controls the overall operation of the device 1000, such as operations related to display, phone calls, data communication, camera operation, and recording operation. The processing component 1002 may include one or more processors 1020 for executing instructions to complete all or some steps of the above-mentioned method for determining random access case resource information. In addition, the processing component 1002 may include one or more modules to facilitate interaction with other components. For example, the processing component 1002 may include a multimedia module to facilitate interaction between the processing component 1002 and the multimedia component 1008.

[0191] The memory 1004 is configured to store various types of data to support operation on the device 1000. Examples of these data include instructions for any application programs or methods for operating on the device 1000, contact data, phone book data, messages, images, videos, etc. The memory 1004 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk.

[0192] The power supply component 1006 provides power to the various components of the device 1000. The power supply component 1006 can include a power management system, one or more power sources, and other components associated with the generation, management, and distribution of power for the device 1000.

[0193] The multimedia component 1008 includes a screen that provides an output interface between the device 1000 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). When 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 touches, slides, and gestures on the touch panel. The touch sensors can detect the boundaries of touch or slide operations as well as the duration and pressure associated with the touch or slide operations. In some embodiments, the multimedia component 1008 includes a front camera and / or a rear camera. When the device 1000 is in an operation mode, such as a photo mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or may have a focal length and optical zoom capability.

[0194] The audio component 1010 is configured to output and / or input audio signals. For example, the audio component 1010 includes a microphone (MIC) configured to receive external audio signals when the device 1000 is in an operation mode such as a call mode, a record mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1004 or transmitted via the communication component 1016. In some embodiments, the audio component 1010 further includes a speaker for outputting audio signals.

[0195] The I / O interface 1012 provides an interface between the processing component 1002 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0196] The sensor component 1014 includes one or more sensors to provide various aspects of the status assessment of the device 1000. For example, the sensor component 1014 can detect the on / off state of the device 1000, the relative positioning of a component, such as the display and keypad of the device 1000, and can further detect the position change of the device 1000 or one of its components, the presence or absence of contact between the user and the device 1000, the orientation and position or acceleration / deceleration of the device 1000, and the temperature change of the device 1000. The sensor component 1014 can also include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor component 1014 can further include an optical sensor, such as a CMOS or CCD image sensor used for imaging applications. In some embodiments, the sensor component 1014 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0197] The communication component 1016 is configured to facilitate wired or wireless communication between the device 1000 and other devices. The device 1000 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 1016 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 1016 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0198] In an exemplary embodiment, the apparatus 1000 may 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, microcontrollers, microprocessors, or other electronic components to perform the relationship indication methods described above.

[0199] In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as a memory 1004 including instructions, may be provided, which may be executed by the processor 1020 of the device 1000 to complete the above-mentioned relation indication method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device.

[0200] Those skilled in the art may easily conceive other implementations of the present disclosure after studying the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any modifications, applications, or suitable variations of the present disclosure, which modifications, applications, or suitable variations follow the general principles of the present disclosure and include common knowledge or commonly used technical means in the art that are not disclosed in the present disclosure. The specification and examples are considered to be merely exemplary, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0201] It should be noted that the present disclosure is not limited to the exact structure described above and illustrated in the drawings, and various modifications and variations can be made without departing from the scope of the present disclosure, which is limited only by the scope of the appended claims.

[0202] It should be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such a physical relationship or sequence exists between these entities or operations. The terms "comprise", "comprises", or any other variation thereof, are intended to cover a non-exclusive "comprise", such that a process, method, article, or device that includes a set of elements further includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or device. In the absence of further limitations, an element qualified by the phrase "comprises one" does not exclude the presence of another identical element in the process, method, article, or device that includes that element.

[0203] Although the method and device provided by the embodiments of the present disclosure have been described in detail above, the present specification applies specific examples to describe the principles and embodiments of the present disclosure, and the description of the above examples is only for understanding the method and core idea of ​​the present disclosure. At the same time, those skilled in the art should be aware that there may be changes in the specific embodiments and application scope according to the idea of ​​the present disclosure, and thus the contents of the specification should not be understood as limitations of the present disclosure.

Claims

1. A relationship indication method executed by a terminal, comprising: Receiving an indication of a non-access stratum (NAS) in an access stratum (AS), and determining a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or an adjacent area of ​​the area; A relationship indication method comprising:

2. Receiving an indication of a non-access stratum (NAS) at the access stratum (AS), receiving slice-related information transmitted from the NAS at the AS; The slice-related information includes: Slice and a slice priority of the slice; and The mapping relationship; and a valid action region of the mapping relationship and a correspondence relationship between the mapping relationship and the mapping relationship; 2. The method of claim 1, wherein the relationship is specified by a first relation.

3. The method comprises: Further comprising the step of performing cell reselection based on the slice-related information.

3. The method of claim 2, wherein the relationship is specified by a first relation.

4. The method comprises: Further comprising: determining a frequency priority corresponding to a slice and / or a slice group based on the first indication information transmitted from the network side device; 4. The method of claim 3, wherein the relationship is specified by a first relation.

5. The first instruction information is A system information block (SIB); A Radio Resource Control Release (RRCRelease) message; and 5. The method of claim 4, wherein the relationship is specified by a first relation.

6. When the first indication information is included in the SIB, the first indication information indicates a frequency priority corresponding to a slice group; When the first indication information is included in an RRC Release message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

6. The method of claim 5, wherein the relationship is specified by a first relation.

7. The step of performing cell reselection based on the slice-related information includes: selecting slices one by one in order of decreasing slice priority; determining a frequency priority corresponding to the selected slice; 7. The method of claim 6, wherein the relationship is specified by a first relation.

8. The method comprises: selecting frequencies in order of decreasing frequency priority and determining a ranking of all cells corresponding to the selected frequencies; selecting a cell based on the ranking and determining whether the selected cell supports the selected slice; reselecting the selected cell in response to at least the selected cell supporting the selected slice being satisfied; in response to the selected cell not supporting the selected slice, selecting a next ranking cell or selecting a next priority frequency if all cells corresponding to a selected frequency point have been traversed until it is determined that the selected cell supports the selected slice.

8. The method of claim 7, wherein the relationship is specified by a first relation.

9. The method comprises: selecting frequencies in order of decreasing frequency priority and determining a ranking of all cells corresponding to the selected frequencies; selecting a highest ranked cell based on the ranking and determining whether the selected cell supports the selected slice; reselecting the highest-ranked cell in response to at least the highest-ranked cell supporting the selected slice being satisfied; and selecting a next priority frequency in response to the highest ranking cell not supporting the selected slice.

8. The method of claim 7, wherein the relationship is specified by a first relation.

10. The step of determining whether the selected cell supports the selected slice comprises: determining whether the selected cell supports the selected slice based on second indication information sent from the network side device, the second indication information indicating slice information supported by the cell; 10. The method according to claim 8 or 9, wherein the relationship is specified by the first relation.

11. The second instruction information is A system information block (SIB); A Radio Resource Control Release (RRCRelease) message; and 11. The method of claim 10,

12. When the second indication information is included in the SIB, the second indication information indicates a slice group supported by a cell; When the second indication information is included in an RRC Release message, the second indication information indicates slices and / or slice groups supported by the cell.

12. The method of claim 11, wherein the relationship is specified by a first parameter.

13. An information transmission method performed by a network side device, comprising: transmitting information to a terminal according to any one of claims 1 to 12 and / or receiving information transmitted by a terminal according to any one of claims 1 to 11, 23. An information transmission method comprising:

14. The transmitting of information to the terminal according to any one of claims 1 to 11 includes: transmitting first indication information to the terminal for indicating a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group; 14. The information transmission method according to claim 13.

15. The first instruction information is A system information block (SIB); A Radio Resource Control Release (RRCRelease) message; and 15. The information transmission method according to claim 14.

16. When the first indication information is included in the SIB, the first indication information indicates a frequency priority corresponding to a slice group; When the first indication information is included in an RRC Release message, the first indication information indicates a frequency priority corresponding to a slice and / or a frequency priority corresponding to a slice group.

16. The information transmission method according to claim 15.

17. The transmitting of information to the terminal according to any one of claims 1 to 11 includes: transmitting second indication information to the terminal for indicating slice information supported by the cell; 14. The information transmission method according to claim 13.

18. The second instruction information is A system information block (SIB); A Radio Resource Control Release (RRCRelease) message; and 20. The information transmission method according to claim 17,

19. When the second indication information is included in the SIB, the second indication information indicates a slice group supported by a cell; When the second indication information is included in an RRC Release message, the second indication information indicates slices and / or slice groups supported by the cell.

20. The information transmission method according to claim 18.

20. The transmitting of information to the terminal according to any one of claims 1 to 11 includes: The terminal further includes transmitting area information to the terminal for determining a target area to which the selected cell belongs.

20. The information transmission method according to claim 17,

21. The area information is A cell identifier (Cell ID); a tracking area identifier (TAC); 21. The information transmission method according to claim 20.

22. A relationship indicating device applied to a terminal, comprising: A processing module configured to receive an indication of a non-access stratum (NAS) at an access stratum (AS) and determine a mapping relationship between slice groups and slices corresponding to an area in which the terminal is located and / or an adjacent area of ​​the area. A relationship indicating device characterized by the above.

23. An information transmission device applied to a network side device, 20. A method for providing a method for a terminal according to claim 19, comprising:

2. An information transmission device comprising:

24. A communication device, comprising: A processor; and a memory for storing a computer program, When the computer program is executed by a processor, the relationship indication method according to any one of claims 1 to 12 is realized. A communication device comprising:

25. A communication device, comprising: A processor; and a memory for storing a computer program, When the computer program is executed by a processor, the information transmission method according to any one of claims 13 to 21 is realized. A communication device comprising:

26. A computer-readable storage medium having a computer program stored thereon, When the computer program is executed by a processor, the steps of the relationship indication method according to any one of claims 1 to 12 are realized. A computer-readable storage medium comprising:

27. A computer-readable storage medium having a computer program stored thereon, When the computer program is executed by a processor, the steps of the information transmission method according to any one of claims 13 to 21 are realized. A computer-readable storage medium comprising:

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