Access control method, UE, network device, and computer-readable storage medium

Abstract

The present disclosure relates to the technical field of communications, and in particular to an access control method, a UE, a network device, and a computer-readable storage medium. The method comprises: receiving access control information sent by a network device, wherein the access control information is used for controlling a UE to access the network device in a store-and-forward mode. The present disclosure can realize access control in the store-and-forward mode between the network device and the UE.

Description

Access control method, UE, network device and computer-readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on March 25, 2024, with application number 202410343306.0 and application name “Access Control Method, UE, Network Device and Computer-Readable Storage Medium,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular to an access control method, UE, network equipment, and computer-readable storage medium. Background Art

[0004] Currently, 3GPP (3rd Generation Partnership Project) Rel-19 has agreed to standardize the store and forward (S&F) model for NTN (Non-Terrestrial Network) scenarios. Therefore, in NTN scenarios using the store and forward model, a method for implementing access control between network devices and UE (User Equipment) is urgently needed. Summary of the Invention

[0005] Based on this, it is necessary to provide an access control method, UE, network device and computer-readable storage medium to address the above technical issues.

[0006] In a first aspect, an access control method is provided, which is applied to a user equipment (UE). The method includes:

[0007] Receive access control information sent by the network device; wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0008] As an optional implementation, the access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

[0009] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0010] As an optional embodiment, the method further includes one or more of the following:

[0011] If the UE does not support the non-terrestrial network NTN, ignore the first access indication information;

[0012] If the UE supports NTN but does not support the store-and-forward mode, ignore the first access indication information;

[0013] If the UE supports the store-and-forward mode, determining whether the network device supports the store-and-forward mode based on whether the first access indication information appears;

[0014] In the case that the UE supports the store-and-forward mode, it is determined whether to prohibit access to the network device through the store-and-forward mode based on the value of the first access indication information.

[0015] As an optional implementation manner, the access control information further includes second access indication information, and the second access indication information is configured to indicate that access to the current cell is prohibited.

[0016] As an optional implementation, the method further includes:

[0017] In case the UE supports the store-and-forward mode, the second access indication information is ignored.

[0018] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

[0019] As an optional implementation, the method further includes:

[0020] In case the UE supports the store-and-forward mode, the third access indication information is ignored.

[0021] As an optional implementation manner, the access control information further includes one or more of the following:

[0022] Store and forward intra-frequency cell reselection indication information;

[0023] Unified Access Control (UAC) parameters for store-and-forward mode;

[0024] PLMN list for store-and-forward mode;

[0025] TA list in store-and-forward mode;

[0026] Business type of store-and-forward mode;

[0027] Slicing in store-and-forward mode;

[0028] Access type of store-and-forward mode;

[0029] Access identity in store-and-forward mode.

[0030] In a second aspect, an access control method is provided, which is applied to a network device and includes:

[0031] Send access control information; wherein the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

[0032] As an optional implementation, the access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

[0033] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0034] As an optional implementation manner, sending access control information includes one or more of the following:

[0035] Broadcasting first access indication information in a non-terrestrial network NTN cell in a store-and-forward mode;

[0036] In a terrestrial network TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

[0037] As an optional implementation manner, the access control information further includes second access indication information, where the second access indication information is used to indicate whether access is prohibited to the current cell. Sending the access control information includes:

[0038] In the NTN cell in the store-and-forward mode, second access indication information is broadcasted, and a value of the second access indication information is prohibited.

[0039] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN and sending access control information, including one or more of the following:

[0040] In the NTN cell in the store-and-forward mode, third access indication information is broadcasted, where the value of the third access indication information is prohibited;

[0041] In the NTN cell not in the store-and-forward mode, broadcasting third access indication information;

[0042] In an NTN cell in store-and-forward mode, the third access indication information does not appear.

[0043] As an optional implementation manner, the access control information further includes one or more of the following:

[0044] Store and forward intra-frequency cell reselection indication information;

[0045] Unified Access Control (UAC) parameters for store-and-forward mode;

[0046] PLMN list for store-and-forward mode;

[0047] TA list in store-and-forward mode;

[0048] Business type of store-and-forward mode;

[0049] Slicing in store-and-forward mode;

[0050] Access type of store-and-forward mode;

[0051] Access identity in store-and-forward mode.

[0052] In a third aspect, a user equipment (UE) is provided, including a memory, a transceiver, and a processor;

[0053] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0054] Receive access control information sent by the network device; wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0055] As an optional implementation, the access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

[0056] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0057] As an optional implementation manner, the processor is further configured to read the computer program in the memory and perform one or more of the following operations:

[0058] If the UE does not support the non-terrestrial network NTN, ignore the first access indication information;

[0059] If the UE supports NTN but does not support the store-and-forward mode, ignore the first access indication information;

[0060] If the UE supports the store-and-forward mode, determining whether the network device supports the store-and-forward mode based on whether the first access indication information appears;

[0061] In the case that the UE supports the store-and-forward mode, it is determined whether to prohibit access to the network device through the store-and-forward mode based on the value of the first access indication information.

[0062] As an optional implementation manner, the access control information further includes second access indication information, and the second access indication information is configured to indicate that access to the current cell is prohibited.

[0063] As an optional implementation manner, the processor is further configured to read the computer program in the memory and perform the following operations:

[0064] In case the UE supports the store-and-forward mode, the second access indication information is ignored.

[0065] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

[0066] As an optional implementation manner, the processor is further configured to read the computer program in the memory and perform the following operations:

[0067] In case the UE supports the store-and-forward mode, the third access indication information is ignored.

[0068] As an optional implementation manner, the access control information further includes one or more of the following:

[0069] Store and forward intra-frequency cell reselection indication information;

[0070] Unified Access Control (UAC) parameters for store-and-forward mode;

[0071] PLMN list for store-and-forward mode;

[0072] TA list in store-and-forward mode;

[0073] Business type of store-and-forward mode;

[0074] Slicing in store-and-forward mode;

[0075] Access type of store-and-forward mode;

[0076] Access identity in store-and-forward mode.

[0077] In a fourth aspect, a network device is provided, comprising a memory, a transceiver, and a processor;

[0078] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0079] Send access control information; wherein the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

[0080] As an optional implementation, the access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

[0081] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0082] As an optional implementation manner, sending access control information includes one or more of the following:

[0083] Broadcasting first access indication information in a non-terrestrial network NTN cell in a store-and-forward mode;

[0084] In a terrestrial network TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

[0085] As an optional implementation manner, the access control information further includes second access indication information, where the second access indication information is used to indicate whether access is prohibited to the current cell. Sending the access control information includes:

[0086] In the NTN cell in the store-and-forward mode, second access indication information is broadcasted, and a value of the second access indication information is prohibited.

[0087] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN and sending access control information, including one or more of the following:

[0088] In the NTN cell in the store-and-forward mode, third access indication information is broadcasted, where the value of the third access indication information is prohibited;

[0089] In the NTN cell not in the store-and-forward mode, broadcasting third access indication information;

[0090] In an NTN cell in store-and-forward mode, the third access indication information does not appear.

[0091] As an optional implementation manner, the access control information further includes one or more of the following:

[0092] Store and forward intra-frequency cell reselection indication information;

[0093] Unified Access Control (UAC) parameters for store-and-forward mode;

[0094] PLMN list for store-and-forward mode;

[0095] TA list in store-and-forward mode;

[0096] Business type of store-and-forward mode;

[0097] Slicing in store-and-forward mode;

[0098] Access type of store-and-forward mode;

[0099] Access identity in store-and-forward mode.

[0100] In a fifth aspect, an access control apparatus is provided, which is applied to a user equipment (UE), and includes:

[0101] The receiving unit is used to receive access control information sent by the network device; wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0102] In a sixth aspect, an access control device is provided, which is applied to a network device and includes:

[0103] The sending unit is used to send access control information; wherein the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

[0104] In the seventh aspect, a communication system is provided, which includes a user equipment UE and a network device; wherein the UE executes any method step as in the first aspect, and the network device executes any method step as in the second aspect.

[0105] In an eighth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method steps of any one of the first aspect or the second aspect are implemented.

[0106] The present disclosure provides an access control method, a user equipment (UE), a network device, and a computer-readable storage medium. The technical solutions provided by the embodiments of the present disclosure provide at least the following beneficial effects: a network device indicates whether the S&F mode is supported through first access indication information. Furthermore, the UE can determine whether a detected cell supports the S&F mode based on the first access indication information, and determine whether to prohibit access or residency in the S&F mode.

[0107] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0109] FIG1 is a flow chart of an access control method provided by an embodiment of the present disclosure;

[0110] FIG2 is a flow chart of an access control method provided by an embodiment of the present disclosure;

[0111] FIG3 is a schematic structural diagram of a UE provided in an embodiment of the present disclosure;

[0112] FIG4 is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0113] FIG5 is a schematic structural diagram of an access control device provided by an embodiment of the present disclosure;

[0114] FIG6 is a schematic structural diagram of an access control device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0115] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0116] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0117] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0118] In a store-and-forward (S&F) NTN scenario, end-to-end signaling and data flow are accomplished in two steps. In the first step, data is transmitted between the UE and the satellite, while the satellite is not connected to the terrestrial network (a satellite can operate a service link without a feeder link). In the second step, the satellite moves to a location where it can connect to the terrestrial network, establishes a connection with the terrestrial network, and then transmits data between the satellite and the terrestrial network. For example, in the first step, the satellite receives data from the UE and stores it onboard. In the second step, the satellite transmits the stored data to the terrestrial network.

[0119] Currently, the methods used by network devices to control UE access mainly include: (1) In the NTN scenario, the network device broadcasts relevant information about prohibited access cells: (1) cellBarred, whose value is the enumeration type (ENUMERATED) {barred, notBarred}; (2) cellBarred-NTN, whose value is the enumeration type (ENUMERATED) {barred, notBarred}. For TN (Terrestrial Network) cells: the network device broadcasts cellBarred, and cellBarred-NTN does not appear. If the value of cellBarred is barred, it means that the TN cell prohibits UE access or residency. If the value of cellBarred is notBarred, it means that the TN cell does not prohibit UE access or residency. For NTN cells: the network device broadcasts cellBarred and cellBarred-NTN. Among them, the value of cellBarred is barred. If the value of cellBarred-NTN is barred, it means that the NTN cell prohibits UE access or residency through the NTN. If the value of cellBarred is notBarred, it means that the NTN cell does not prohibit the UE from accessing or residing through the NTN. (2) Based on the unified access control mechanism, the UE determines whether to allow the UE to initiate access according to the unified access control mechanism before access. Specifically, the UE obtains the access identity (Access Identity) and access category (Access Category). After the UE's AS (Access Stratum) layer obtains the Access Identity and Access Category, it determines whether to allow the UE to access based on the information in SIB1. The information in SIB1 refers to the parameters corresponding to each Access Category. For example, the probability of allowing access, the time within which no further attempts will be made if access is not allowed, etc.

[0120] Currently, 3GPP Rel-19 has agreed to standardize the S&F mode in NTN scenarios. Therefore, in S&F scenarios, there is an urgent need to standardize a series of issues, such as how network devices indicate whether they support S&F mode through configuration parameters, how UEs determine whether detected cells are NTN cells in S&F mode, and how to determine whether access or residence in NTN cells in S&F mode is allowed.

[0121] For ease of understanding, some technical terms that appear in this disclosure are explained in the embodiments of this disclosure, as follows:

[0122] The UE does not support NTN, which means that the UE does not support network access using NTN technology. For example, the UE does not support NTN technologies standardized in versions such as Rel-17 and Rel-18, nor does it support technologies related to the store-and-forward mode. The UE supports NTN but does not support the store-and-forward mode, which means that the UE can access the network using NTN technologies other than the store-and-forward mode. For example, the UE supports NTN technologies standardized in versions such as 3GPP Rel-17 and Rel-18, but does not support technologies related to the store-and-forward mode in NTN scenarios. The UE supports the store-and-forward mode, which means that the UE supports network access using the store-and-forward mode and may also support NTN technologies standardized in versions such as 3GPP Rel-17 and Rel-18.

[0123] A non-store-and-forward NTN cell, that is, an NTN cell that does not support the store-and-forward mode, refers to a network that supports NTN technologies other than the store-and-forward mode, such as NTN technologies standardized in 3GPP Rel-17 and Rel-18, but does not support technologies related to the store-and-forward mode in NTN scenarios. A cell that supports the store-and-forward mode or an NTN cell in the store-and-forward mode (an NTN cell in the store-and-forward mode is an NTN cell that supports the store-and-forward mode) refers to a cell in which the network supports the store-and-forward mode or allows access by UEs with store-and-forward mode capabilities. A cell that supports the store-and-forward mode may be a cell that supports the store-and-forward mode, or a cell in which certain PLMNs, certain TAs, certain service types, certain slices, certain access types, or certain access identities support the store-and-forward mode.

[0124] Based on this, an embodiment of the present disclosure provides an access control method, which is applied to a UE. As shown in FIG1 , the specific processing process is as follows:

[0125] Step 101: Receive access control information sent by a network device, wherein the access control information is used to control a UE to access the network device in a store-and-forward mode.

[0126] In implementation, in order to enable the network device to indicate whether it supports the S&F mode through configuration parameters. At the same time, in order to enable the UE to determine whether the detected cell supports the S&F mode and / or determine whether access or residence through the S&F mode is prohibited. In the S&F mode scenario, the network device can broadcast access control information. The access control information is used to control the UE to access the network device through the S&F mode. Accordingly, the UE can receive the access control information sent by the network device. Optionally, the network device in the embodiment of the present disclosure can be a non-terrestrial network device such as a base station or core network in the NTN scenario. The base station and / or core network device can be carried on a satellite.

[0127] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0128] In implementation, the access control information can be configured for one or more of the cell, PLMN (Public Land Mobile Network), TA (Tracking area), service type, slice, access type or access identity, thereby realizing different types of access control.

[0129] As an optional implementation manner, the access control information includes first access indication information, wherein the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0130] In implementation, the access control information may include first access indication information (i.e., saf-cellbarred), and saf-cellbarred is used to indicate whether the UE is prohibited from accessing the network device through the S&F mode. Optionally, the value of saf-cellbarred can be an enumeration type, including two values: prohibited (barred) and not prohibited (notBarred). Among them, if the value of saf-cellbarred is barred, it means that the UE is prohibited from accessing the network device through the S&F mode. If the value of saf-cellbarred is notBarred, it means that the UE is not prohibited from accessing the network device through the S&F mode. If saf-cellbarred does not appear, it means that the network does not support the store-and-forward mode. In this way, the network device indicates whether the S&F mode is supported by carrying the first access indication information in the access control information. At the same time, the UE can also determine whether the detected cell supports the S&F mode based on the first access indication information, and determine whether to prohibit access or residence through the S&F mode.

[0131] As an optional implementation manner, the capabilities supported by the UE are different, and the processing of the first access indication information is also different. The specific situations are as follows:

[0132] Case 1: When the UE does not support NTN, the first access indication information is ignored.

[0133] In implementation, for a UE that does not support NTN, the UE ignores the first access indication information (ie, saf-cellbarred).

[0134] Case 2: When the UE supports NTN but does not support the store-and-forward mode, the first access indication information is ignored.

[0135] In implementation, for a UE that supports NTN but does not support the S&F mode, the UE ignores the first access indication information (ie, saf-cellbarred).

[0136] Case three: when the UE supports the store-and-forward mode, it is determined whether the network device supports the store-and-forward mode based on whether the first access indication information appears.

[0137] In implementation, for a UE supporting the S&F mode, the UE determines whether the first access indication information (i.e., saf-cellbarred) appears in the access control information. If saf-cellbarred appears, it indicates that the network device supports the S&F mode. If saf-cellbarred does not appear, it indicates that the network device does not support the S&F mode.

[0138] Case 4: When the UE supports the store-and-forward mode, it is determined whether access to the network device through the store-and-forward mode is prohibited based on the value of the first access indication information.

[0139] In implementation, for a UE supporting the S&F mode, the UE determines whether to prohibit the UE from accessing the network device through the S&F mode based on the value of the first access indication information (i.e., saf-cellbarred). If the value of saf-cellbarred is barred, it indicates that the UE is prohibited from accessing the network device through the S&F mode. If the value of saf-cellbarred is notBarred, it indicates that the UE is not prohibited from accessing the network device through the S&F mode.

[0140] As an optional implementation, the access control information further includes second access indication information. The second access indication information is configured to indicate that the current cell prohibits access.

[0141] In implementations, in the S&F mode scenario, the access control information also includes second access indication information (i.e., cellBarred). cellBarred is used to indicate whether the current cell is barred for access, and the value of cellBarred is barred. Upon receiving the access control information, a UE that does not support NTN determines that the cell is barred for access or resides in the current cell.

[0142] As an optional implementation manner, when the UE supports the store-and-forward mode, the second access indication information is ignored.

[0143] In implementation, for a UE supporting the S&F mode, the UE ignores the second access indication information (ie, cellBarred).

[0144] As an optional implementation manner, the access control information further includes third access indication information, wherein the third access indication information is configured to indicate prohibiting the UE from accessing the network device through the NTN.

[0145] In an implementation, in the S&F mode scenario, the access control information also includes third access indication information (i.e., cellbarred-NTN). The cellbarred-NTN field indicates whether the UE is prohibited from accessing the network device via the NTN. The value of cellbarred-NTN is barred. Thus, upon receiving the access control information, a UE that supports NTN but not the S&F mode determines that the value of cellbarred-NTN is barred and determines that the UE is prohibited from accessing the network device via the NTN.

[0146] As an optional implementation manner, when the UE supports the store-and-forward mode, the third access indication information is ignored.

[0147] In implementation, for a UE supporting the S&F mode, the UE ignores the third indication information (ie, cellbarred-NTN).

[0148] It should be noted that saf-cellbarred can be configured for one or more of the cells, PLMNs, TAs, service types, slices, access types or access identities.

[0149] (1) For the cell configuration of saf-cellbarred, saf-cellbarred indicates whether the cell prohibits UE access through S&F mode. UEs that support S&F mode determine whether the cell prohibits UE access through S&F mode based on the value of saf-cellbarred configured in the cell. If the value of saf-cellbarred is barred, the cell supports S&F mode and prohibits access through S&F mode. If the value of saf-cellbarred is notBarred, the cell supports S&F mode and does not prohibit access through S&F mode.

[0150] (2) For PLMN configuration of saf-cellbarred, saf-cellbarred indicates whether the PLMN prohibits UE access through S&F mode. UEs that support S&F mode determine whether the PLMN prohibits UE access through S&F mode based on the value of saf-cellbarred configured in the PLMN. If the value of saf-cellbarred is barred, the PLMN supports S&F mode and prohibits access through S&F mode. If the value of saf-cellbarred is notBarred, the PLMN supports S&F mode and does not prohibit access through S&F mode.

[0151] (3) For TAs configured with saf-cellbarred, saf-cellbarred indicates whether the TA prohibits UEs from accessing through the S&F mode. UEs that support the S&F mode determine whether the TA prohibits UEs from accessing through the S&F mode based on the value of saf-cellbarred configured by the TA. If the value of saf-cellbarred is barred, the TA supports the S&F mode and prohibits access through the S&F mode. If the value of saf-cellbarred is notBarred, the TA supports the S&F mode and does not prohibit access through the S&F mode.

[0152] (4) For saf-cellbarred configured for a service type, saf-cellbarred indicates whether the service type prohibits UE access through the S&F mode. A UE that supports the S&F mode determines whether the service type prohibits UE access through the S&F mode based on the value of saf-cellbarred configured for the service type. If the value of saf-cellbarred is barred, the service type supports the S&F mode and access through the S&F mode is prohibited. If the value of saf-cellbarred is notBarred, the service type supports the S&F mode and access through the S&F mode is not prohibited.

[0153] (5) For slice configuration saf-cellbarred, saf-cellbarred indicates whether the slice prohibits UE access through S&F mode. UEs that support S&F mode determine whether the slice prohibits UE access through S&F mode based on the value of saf-cellbarred configured in the slice. If the value of saf-cellbarred is barred, the slice supports S&F mode and prohibits access through S&F mode. If the value of saf-cellbarred is notBarred, the slice supports S&F mode and does not prohibit access through S&F mode.

[0154] (6) For saf-cellbarred configured for an access type, saf-cellbarred indicates whether the access type prohibits UE access through S&F mode. UEs that support S&F mode determine whether the access type prohibits UE access through S&F mode based on the value of saf-cellbarred configured for the access type. If the value of saf-cellbarred is barred, the access type supports S&F mode and prohibits access through S&F mode. If the value of saf-cellbarred is notBarred, the access type supports S&F mode and does not prohibit access through S&F mode.

[0155] (7) For saf-cellbarred configured for an access identity, saf-cellbarred indicates whether the access identity prohibits the UE from accessing through the S&F mode. A UE that supports the S&F mode determines whether the access identity prohibits the UE from accessing through the S&F mode based on the value of saf-cellbarred configured for the access identity. If the value of saf-cellbarred is barred, the access identity supports the S&F mode and prohibits access through the S&F mode. If the value of saf-cellbarred is notBarred, the access identity supports the S&F mode and does not prohibit access through the S&F mode.

[0156] As an optional implementation, the network device allows simultaneous access through the NTN in S&F mode and non-S&F mode. Accordingly, the access control information also includes one or more of the following: (1) intra-frequency cell reselection indication information in the store-and-forward mode; (2) UAC parameters in the store-and-forward mode; (3) PLMN list in the store-and-forward mode; (4) TA list in the store-and-forward mode; (5) service type in the store-and-forward mode; (6) slice in the store-and-forward mode; (7) access type in the store-and-forward mode; (8) access identity in the store-and-forward mode.

[0157] In implementation, in order to support intra-frequency cell reselection, the access control information may further include intra-frequency cell reselection indication information (i.e., saf-IntraFreqReselection) in a store-and-forward mode. saf-IntraFreqReselection indicates whether the UE is allowed to reselect to the intra-frequency cell when the saf-cellBarred value of the high-ranking cell is barred. The value of saf-IntraFreqReselection is an enumeration type (ENUMERATED) {allowed, notAllowed}. The network device can broadcast saf-cellBarred and saf-IntraFreqReselection. If the value of saf-cellBarred is barred and the value of saf-IntraFreqReselection is allowed, it means that the current cell does not allow the UE to access or reside in the S&F mode, but the UE can reselect the intra-frequency cell. If the value of saf-cellBarred is barred and the value of saf-IntraFreqReselection is notAllowed, the UE determines that the current cell does not allow the UE to access or reside in S&F mode, and the UE cannot reselect to an intra-frequency cell. Similar to saf-cellBarred, saf-IntraFreqReselection can also be configured for PLMN / TA / service type / slice / access category / access identity.

[0158] In order to allow simultaneous access to NTNs in S&F mode and non-S&F mode, the access control information may also include (1) UAC parameters for store-and-forward mode. (2) PLMN list and / or TA list and / or service type and / or slice and / or access type and / or access identity for store-and-forward mode. The UE may receive the UAC parameters for store-and-forward mode, and select the corresponding UAC parameter list based on the determined PLMN. Based on the selected UAC parameter list, the UE then performs access control judgment based on the determined access type to determine whether the UE is allowed to access or reside. Taking PLMN as an example, the implementation method includes: Method 1, the network device configures PLMN list 1 and the corresponding cellBarred-NTN list, and configures PLMN list 2 and the corresponding saf-cellBarred list. Each cellBarred-NTN in the cellBarred-NTN list indicates whether each PLMN in PLMN list 1 allows the UE to access through NTN. Each saf-cellBarred in the saf-cellBarred list indicates whether each PLMN in PLMN list 2 allows the UE to access through S&F mode. Method 2: The network device configures PLMN List 1 and the corresponding cellBarred-NTN. Among them, cellBarred-NTN is configured as notBarred, indicating that each PLMN in PLMN List 1 allows UE to access through NTN. The network configures PLMN List 2 and the corresponding saf-cellBarred list. Among them, each saf-cellBarred in the saf-cellBarred list indicates that each PLMN in PLMN List 2 allows UE to access through S&F mode. Method 3: The network device configures a list for indicating whether each PLMN supports S&F mode or non-S&F mode NTN. The list is also associated with a barred list. The barred list is used to indicate whether each PLMN allows UE to access. Method 4: The network device configures a list for indicating whether each PLMN supports S&F mode or non-S&F mode NTN. Each PLMN in the list is associated with two barred bits, indicating whether the PLMN allows UE to access through non-S&F mode NTN and whether it allows UE to access through S&F mode. The TA list, service type, slice, access type and access identity are similar to the implementation of the above-mentioned PLMN and will not be repeated here.

[0159] The present disclosure provides an access control method, which is applied to a network device. As shown in FIG2 , the specific processing process is as follows:

[0160] Step 201: Send access control information, wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0161] In implementation, in order to enable a network device to indicate whether it supports the S&F mode through configuration parameters, and also to enable a UE to determine whether a detected cell supports the S&F mode and / or whether to prohibit access or reside in the S&F mode, in the S&F mode scenario, the network device may broadcast access control information. The access control information is used to control the UE's access to the network device via the store-and-forward mode. Optionally, the network device in the embodiments of the present disclosure may be a non-terrestrial network device such as a base station or core network in an NTN scenario. The base station and / or core network device may be hosted on a satellite.

[0162] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0163] In implementation, the access control information may be configured for one or more of a cell, a PLMN, a TA, a service type, a slice, an access category, or an access identity.

[0164] As an optional implementation manner, the access control information includes first access indication information, wherein the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0165] In implementation, the access control information includes first access indication information (i.e., saf-cellbarred), and saf-cellbarred is used to indicate whether the UE is prohibited from accessing the network device through the S&F mode. Optionally, the value of saf-cellbarred can be an enumeration type, including two values: prohibited (barred) and not prohibited (notBarred). Among them, if the value of saf-cellbarred is barred, it means that the UE is prohibited from accessing the network device through the S&F mode. If the value of saf-cellbarred is notBarred, it means that the UE is not prohibited from accessing the network device through the S&F mode. If saf-cellbarred does not appear, it means that the network does not support the store-and-forward mode. saf-cellbarred can also be configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity. Among them, the specific introduction of saf-cellbarred for one or more of the configurations of the cell, PLMN, TA, service type, slice, access type or access identity can refer to the above-mentioned introduction on the UE side and will not be repeated here. In this way, the network device indicates whether the S&F mode is supported by carrying the first access indication information in the access control information. At the same time, the UE can also determine whether the detected cell supports the S&F mode based on the first access indication information, and determine whether to prohibit access or reside in the S&F mode.

[0166] As an optional implementation, the network device sends access control information, including one or more of the following: (1) in a cell supporting the store-and-forward mode, broadcasting the first access indication information; (2) in a TN cell and an NTN cell not in the store-and-forward mode, the first access indication information does not appear.

[0167] In implementation, (1) in a cell supporting the store-and-forward mode, the network device always broadcasts saf-cellbarred. In this way, a UE supporting the S&F mode can determine whether the network device supports the store-and-forward mode based on the appearance of saf-cellbarred, and the UE can determine whether to prohibit the UE from accessing the network device through the S&F mode based on the value of saf-cellbarred. (2) In a TN cell and an NTN cell not in the store-and-forward mode, the first access indication information does not appear. Optionally, a cell supporting the store-and-forward mode may be a cell supporting the store-and-forward mode, or certain PLMNs, certain TAs, certain service types, certain slices, certain access types, or certain access identities of the cell may support the store-and-forward mode.

[0168] As an optional implementation, the access control information further includes second access indication information. The second access indication information is used to indicate whether access is prohibited in the current cell. The network device transmits the access control information by broadcasting the second access indication information in an NTN cell in store-and-forward mode, where the value of the second access indication information is prohibited.

[0169] In implementations, in S&F mode, the access control information also includes a second access indication (i.e., cellBarred). cellBarred indicates whether access is prohibited in the current cell. In NTN cells operating in store-and-forward mode, network equipment broadcasts cellBarred, and the value of cellBarred is always barred. Thus, upon receiving the access control information, a non-NTN-capable UE determines that the value of cellBarred is not barred and determines that access or residency is prohibited in the current cell.

[0170] As an optional implementation, the access control information further includes third access indication information. The third access indication information is used to indicate whether the UE is prohibited from accessing the network device through the NTN. The processing process of the network device sending the access control information includes one or more of the following: (1) in an NTN cell in store-and-forward mode, broadcasting the third access indication information, the value of the third access indication information being prohibited. (2) in an NTN cell not in store-and-forward mode, broadcasting the third access indication information. (3) in an NTN cell in store-and-forward mode, the third access indication information is not displayed.

[0171] In implementation, in the S&F mode scenario, the access control information also includes a third access indication information (i.e., cellbarred-NTN). Among them, cellbarred-NTN is used to indicate whether the UE is prohibited from accessing the network device through the NTN. (1) In the NTN cell in the store-and-forward mode, the network device broadcasts the third access indication information, and the value of the third access indication information is always prohibited. In this way, after receiving the access control information, a UE that supports NTN but does not support the S&F mode determines that the value of cellbarred-NTN is barred, and determines that the UE is prohibited from accessing the network device through the NTN. (2) In the NTN cell that is not in the store-and-forward mode, the third access indication information is broadcast. In this way, after receiving the access control information, a UE that supports NTN but does not support the S&F mode can determine whether the UE is prohibited from accessing the network device through the NTN based on the value of cellbarred-NTN. (3) In the NTN cell in the store-and-forward mode, the third access indication information does not appear.

[0172] As an optional implementation, the network device allows simultaneous access through the NTN in S&F mode and non-S&F mode. Accordingly, the access control information also includes one or more of the following: (1) intra-frequency cell reselection indication information in the store-and-forward mode. (2) UAC parameters in the store-and-forward mode. (3) PLMN list in the store-and-forward mode. (4) TA list in the store-and-forward mode. (5) service type in the store-and-forward mode. (6) slice in the store-and-forward mode. (7) access type in the store-and-forward mode. (8) access identity in the store-and-forward mode.

[0173] In implementation, in order to support intra-frequency cell reselection, the access control information may further include intra-frequency cell reselection indication information (i.e., saf-IntraFreqReselection) in a store-and-forward mode. saf-IntraFreqReselection indicates whether the UE is allowed to reselect to the intra-frequency cell when the saf-cellBarred value of the high-ranking cell is barred. The value of saf-IntraFreqReselection is an enumeration type (ENUMERATED) {allowed, notAllowed}. The network device can broadcast saf-cellBarred and saf-IntraFreqReselection. If the value of saf-cellBarred is barred and the value of saf-IntraFreqReselection is allowed, it means that the current cell does not allow the UE to access or reside in the S&F mode, but the UE can reselect the intra-frequency cell. If the value of saf-cellBarred is barred and the value of saf-IntraFreqReselection is notAllowed, the UE determines that the current cell does not allow the UE to access or reside in S&F mode, and the UE cannot reselect to an intra-frequency cell. Similar to saf-cellBarred, saf-IntraFreqReselection can also be configured for PLMN / TA / service type / slice / access category / access identity.

[0174] In order to allow simultaneous access to NTNs in S&F mode and non-S&F mode, the access control information may also include (1) UAC parameters for store-and-forward mode. (2) PLMN list and / or TA list and / or service type and / or slice and / or access type and / or access identity for store-and-forward mode. The UE may receive the UAC parameters for store-and-forward mode, and select the corresponding UAC parameter list based on the determined PLMN. Based on the selected UAC parameter list, the UE then performs access control judgment based on the determined access type to determine whether the UE is allowed to access or reside. Taking PLMN as an example, the implementation method includes: Method 1, the network device configures PLMN list 1 and the corresponding cellBarred-NTN list, and configures PLMN list 2 and the corresponding saf-cellBarred list. Each cellBarred-NTN in the cellBarred-NTN list indicates whether each PLMN in PLMN list 1 allows the UE to access through NTN. Each saf-cellBarred in the saf-cellBarred list indicates whether each PLMN in PLMN list 2 allows the UE to access through S&F mode. Method 2: The network device configures PLMN List 1 and the corresponding cellBarred-NTN. Among them, cellBarred-NTN is configured as notBarred, indicating that each PLMN in PLMN List 1 allows UE to access through NTN. The network configures PLMN List 2 and the corresponding saf-cellBarred list. Among them, each saf-cellBarred in the saf-cellBarred list indicates that each PLMN in PLMN List 2 allows UE to access through S&F mode. Method 3: The network device configures a list for indicating whether each PLMN supports S&F mode or non-S&F mode NTN. The list is also associated with a barred list. The barred list is used to indicate whether each PLMN allows UE to access. Method 4: The network device configures a list for indicating whether each PLMN supports S&F mode or non-S&F mode NTN. Each PLMN in the list is associated with two barred bits, indicating whether the PLMN allows UE to access through non-S&F mode NTN and whether it allows UE to access through S&F mode. The TA list, service type, slice, access type and access identity are similar to the implementation of the above-mentioned PLMN and will not be repeated here.

[0175] The present disclosure provides five embodiments, which are as follows:

[0176] In a first embodiment, a network device indicates whether to prohibit UE access or residency by configuring the saf-cellBarred flag. saf-cellBarred is configured for a cell, indicating whether the cell allows UE access in S&F mode or supports S&F mode services. The value of saf-cellBarred is an enumeration type (ENUMERATED) {barred, notBarred}.

[0177] Scenario 1: TN cell, non-S&F mode NTN cell, and UE supporting S&F mode:

[0178] TN cell: The network device broadcasts cellBarred, and saf-cellBarred does not appear. The value of cellBarred can be barred or notBarred.

[0179] In an NTN cell not in S&F mode, the network device broadcasts cellBarred and cellBarred-NTN, but saf-cellBarred does not appear. The value of cellBarred is barred, and the value of cellBarred-NTN is barred or notBarred.

[0180] For UEs supporting S&F mode: The UE determines whether the cell is an NTN cell in S&F mode by checking whether saf-cellBarred appears in the broadcast. Therefore, in a TN cell or a non-S&F NTN cell, since saf-cellBarred does not appear in the broadcast, the UE supporting S&F mode determines that the cell does not support S&F mode, that is, does not support the provision of S&F services.

[0181] Scenario 2: NTN cell in S&F mode, UE that does not support NTN, UE that supports NTN but not S&F mode, and UE that supports S&F mode:

[0182] For cells supporting the S&F mode, the network device broadcasts cellBarred and saf-cellBarred, but cellBarred-NTN does not appear. The value of cellBarred is barred, and the value of saf-cellBarred is notBarred.

[0183] For UE that does not support NTN: the UE ignores saf-cellBarred, and the UE determines that cellBarred is barred, and determines that the cell is not allowed to be accessed or resided.

[0184] For UEs that support NTN but not S&F mode: the UE ignores saf-cellBarred, and the UE determines that cellBarred-NTN does not appear in the broadcast, and determines that the cell does not support access or residency through NTN.

[0185] For UEs supporting S&F mode: The UE ignores cellBarred and determines that saf-cellBarred appears in the broadcast, thus determining that the cell is an NTN cell in S&F mode and supports S&F mode services. The UE further determines that saf-cellBarred is notBarred and determines that the cell allows access or residency in S&F mode.

[0186] Scenario 3: NTN cell in S&F mode, UE that does not support NTN, UE that supports NTN but not S&F mode, and UE that supports S&F mode:

[0187] For cells supporting the S&F mode, the network device broadcasts cellBarred and saf-cellBarred, but cellBarred-NTN does not appear. The value of cellBarred is barred, and the value of saf-cellBarred is barred.

[0188] For UE that does not support NTN: the UE ignores saf-cellBarred, and the UE determines that cellBarred is barred, and determines that the cell is not allowed to be accessed or resided.

[0189] For UEs that support NTN but not S&F mode: the UE ignores saf-cellBarred. If cellBarred-NTN does not appear in the broadcast, the UE determines that the cell does not support access through NTN.

[0190] For UEs supporting S&F mode: The UE ignores cellBarred. The UE determines that saf-cellBarred appears in the broadcast and determines that the cell is an NTN cell in S&F mode and supports S&F mode services. The UE further determines that saf-cellBarred is barred and determines that the cell prohibits access or residency through S&F mode.

[0191] In a second embodiment, a network device indicates whether to prohibit UE access or reside on a cell by configuring the saf-cellBarred flag. saf-cellBarred is configured for a cell, indicating whether the cell allows UE access in S&F mode or supports S&F mode services. The value of saf-cellBarred is an enumeration type (ENUMERATED) {barred, notBarred}.

[0192] Scenario 1: TN cell, non-S&F mode NTN cell, and UE supporting S&F mode:

[0193] TN cell: The network device broadcasts cellBarred, and saf-cellBarred does not appear. The value of cellBarred can be barred or notBarred.

[0194] In an NTN cell not in S&F mode, the network device broadcasts cellBarred and cellBarred-NTN, but saf-cellBarred does not appear. The value of cellBarred is barred, and the value of cellBarred-NTN is barred or notBarred.

[0195] For UEs supporting S&F mode: The UE determines whether the cell is an NTN cell in S&F mode by checking whether saf-cellBarred appears in the broadcast. Therefore, in a TN cell or a non-S&F NTN cell, since saf-cellBarred does not appear in the broadcast, the UE determines that the cell does not support S&F mode, that is, does not support the provision of S&F services.

[0196] Scenario 2: NTN cell in S&F mode, UE that does not support NTN, UE that supports NTN but not S&F mode, and UE that supports S&F mode:

[0197] For cells supporting the S&F mode, the network device broadcasts cellBarred, cellBarred-NTN, and saf-cellBarred. The values ​​of cellBarred and cellBarred-NTN are barred, and the value of saf-cellBarred is notBarred.

[0198] For UE that does not support NTN: the UE ignores cellBarred-NTN and saf-cellBarred, and the UE determines that cellBarred is barred, and determines that the cell is not allowed to be accessed or resided.

[0199] For UEs that support NTN but not S&F mode: the UE ignores cellBarred and saf-cellBarred, and the UE determines that cellBarred-NTN is barred, and determines that the cell is not allowed to be accessed or resided on through NTN.

[0200] For UEs supporting S&F mode: The UE ignores cellBarred and cellBarred-NTN. The UE determines that saf-cellBarred appears in the broadcast and determines that the cell is an NTN cell in S&F mode and supports S&F mode services. The UE further determines that saf-cellBarred is notBarred and determines that the cell allows access or residency via S&F mode.

[0201] Scenario 3: NTN cell in S&F mode, UE that does not support NTN, UE that supports NTN but not S&F mode, and UE that supports S&F mode:

[0202] In an NTN cell in S&F mode, the network device broadcasts cellBarred, cellBarred-NTN, and saf-cellBarred. The values ​​of cellBarred and cellBarred-NTN are barred, and the value of saf-cellBarred is barred.

[0203] For UE that does not support NTN: the UE ignores cellBarred-NTN and saf-cellBarred, and the UE determines that cellBarred is barred, and determines that the cell is not allowed to be accessed or resided.

[0204] For UEs that support NTN but not S&F mode: the UE ignores cellBarred and saf-cellBarred, and the UE determines that cellBarred-NTN is barred, and determines that the cell is not allowed to be accessed or resided on through NTN.

[0205] For UEs supporting S&F mode: The UE ignores cellBarred and cellBarred-NTN. The UE determines that saf-cellBarred appears in the broadcast and determines that the cell is an NTN cell in S&F mode and supports S&F mode services. The UE further determines that saf-cellBarred is barred and determines that the cell prohibits S&F mode access or residency.

[0206] In the third embodiment, the network device indicates whether to prohibit UE access or reside by configuring saf-cellBarred, wherein saf-cellBarred is configured for PLMN / TA / service type / slice / access type / access identity.

[0207] (1) saf-cellBarred is configured for each PLMN. saf-cellBarred is a list containing the saf-cellBarred corresponding to each PLMN. If the saf-cellBarred value corresponding to a PLMN is barred, it means that the PLMN in the current cell prohibits UE access through the S&F mode. If the saf-cellBarred value corresponding to a PLMN is notBarred, it means that the PLMN in the current cell allows UE access through the S&F mode.

[0208] (2) saf-cellBarred is configured for each TA. saf-cellBarred is a list containing the saf-cellBarred corresponding to each TA. If the saf-cellBarred value corresponding to a TA is barred, it means that the TA in the current cell prohibits UE access through the S&F mode. If the saf-cellBarred value corresponding to a TA is notBarred, it means that the TA in the current cell allows UE access through the S&F mode.

[0209] (3) saf-cellBarred is configured for each service type. saf-cellBarred is a list containing the saf-cellBarred corresponding to each service type. If the saf-cellBarred value corresponding to a service type is barred, it means that the service type in the current cell is prohibited from being accessed by the UE through the S&F mode. If the saf-cellBarred value corresponding to a service type is notBarred, it means that the service type in the current cell is allowed to be accessed by the UE through the S&F mode.

[0210] (4) saf-cellBarred is configured for each slice, and saf-cellBarred is a list containing the saf-cellBarred corresponding to each slice. If the saf-cellBarred value corresponding to a slice is barred, it means that the slice in the current cell is prohibited from being accessed by UE through the S&F mode. If the saf-cellBarred value corresponding to a certain service type is notBarred, it means that the slice in the current cell is allowed to be accessed by UE through the S&F mode.

[0211] (5) saf-cellBarred is for each access type, and saf-cellBarred is a list containing the saf-cellBarred corresponding to each access type. If the saf-cellBarred value corresponding to a certain access type is barred, it means that the access type in the current cell is prohibited from being accessed by the UE through the S&F mode. If the saf-cellBarred value corresponding to a certain service type is notBarred, it means that the access type in the current cell is allowed to be accessed by the UE through the S&F mode.

[0212] (6) saf-cellBarred is for each access identity, and saf-cellBarred is a list containing the saf-cellBarred corresponding to each access identity. If the saf-cellBarred value corresponding to an access identity is barred, it means that the access identity in the current cell is prohibited from accessing the UE through the S&F mode. If the saf-cellBarred value corresponding to a certain service type is notBarred, it means that the access identity in the current cell allows the UE to access through the S&F mode.

[0213] In a fourth embodiment, the current cell allows both S&F mode NTNs and non-S&F mode NTNs to access simultaneously, and the network device indicates whether to prohibit UE access or reside by configuring saf-cellBarred. Here, saf-cellBarred is configured for PLMN / TA / service type / slice / access type / access identity.

[0214] Taking PLMN as an example, the network equipment configures each PLMN to work in non-S&F mode NTN or S&F mode NTN. The specific method is as follows:

[0215] Method 1: The network device configures PLMN List 1 and its corresponding cellBarred-NTN list, and configures PLMN List 2 and its corresponding saf-cellBarred list. Each cellBarred-NTN in the cellBarred-NTN list indicates whether each PLMN in PLMN List 1 allows the UE to access via the NTN. Each saf-cellBarred in the saf-cellBarred list indicates whether each PLMN in PLMN List 2 allows the UE to access via the S&F mode.

[0216] Method 2: The network device configures PLMN List 1 and the corresponding cellBarred-NTN. The cellBarred-NTN is configured as notBarred, indicating that each PLMN in PLMN List 1 allows the UE to access through the NTN. The network device configures PLMN List 2 and the corresponding saf-cellBarred list. Each saf-cellBarred in the saf-cellBarred list indicates that each PLMN in PLMN List 2 allows the UE to access through the S&F mode.

[0217] In the third method, the network device is configured with a list of NTNs indicating whether each PLMN supports the S&F mode or the non-S&F mode. The list is also associated with a barred list, which is used to indicate whether each PLMN allows the UE to access.

[0218] Method 4: The network device is configured with a list of NTNs indicating whether each PLMN supports S&F mode or normal mode. Each PLMN in the list is associated with two barred bits, indicating whether the PLMN allows UE access through NTN and whether it allows UE access through S&F mode.

[0219] The UE determines whether the selected PLMN and access mode prohibit UE access based on the information broadcast by the network device.

[0220] Similarly, similar to PLMN, it can also be configured for TA / service type / slice / access type / access identity.

[0221] Example 5: The current cell supports access through the S&F mode and the non-S&F mode, and the network device can also configure other related configurations of the NTN in the S&F mode.

[0222] In scenario 1, the network device configures saf-IntraFreqReselection to indicate whether to allow the UE to reselect to a cell with the same frequency when the saf-cellBarred value of a high-ranking cell is barred. saf-IntraFreqReselection is cell-specific and its value is an enumeration type (ENUMERATED) {allowed, notAllowed}.

[0223] (1) The network broadcasts saf-cellBarred and saf-IntraFreqReselection. The value of saf-cellBarred is barred, and the value of saf-IntraFreqReselection is allowed. The UE determines that the current cell does not allow the UE to access or reside in the S&F mode, but the UE can reselect to the same-frequency cell.

[0224] (2) The network broadcasts saf-cellBarred and saf-IntraFreqReselection. The value of saf-cellBarred is barred, and the value of saf-IntraFreqReselection is notAllowed. The UE determines that the current cell does not allow the UE to access or reside in the S&F mode, and the UE cannot reselect to the same-frequency cell.

[0225] Similarly, saf-IntraFreqReselection can also be configured for PLMN / TA / service type / slice / access type / access identity.

[0226] In scenario 2, the network device is configured with a UAC parameter list for non-S&F mode access and a UAC parameter list for S&F mode access.

[0227] After receiving the two UAC parameter lists broadcast by the network device, the UE selects the corresponding UAC parameter list based on the determined PLMN. Based on the selected UAC parameter list, the UE then performs access control based on the determined access type to determine whether the UE is allowed to access or reside.

[0228] Embodiments of the present disclosure provide an access control method, wherein a network device indicates whether an S&F mode is supported through first access indication information. Furthermore, a UE can determine whether a detected cell supports the S&F mode based on the first access indication information, and determine whether to prohibit access or reside in the S&F mode.

[0229] The technical solutions provided by the embodiments of the present disclosure can be applicable to a variety of systems. For example, applicable systems may be long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, advanced long term evolution (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems and their evolved communication systems, etc. These various systems may include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0230] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. For related parts, please refer to the description of other method embodiments.

[0231] The embodiment of the present disclosure further provides a UE, as shown in FIG3 , including a memory 310 , a transceiver 320 , and a processor 330 ;

[0232] The memory 310 is used to store computer programs; the transceiver 320 is used to send and receive data under the control of the processor 330; and the processor 330 is used to read the computer program in the memory 310 and perform the following operations:

[0233] Receive access control information sent by the network device; wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0234] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0235] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0236] As an optional implementation, the processor 330 is further configured to read the computer program in the memory 310 and perform one or more of the following operations:

[0237] If the UE does not support NTN, ignore the first access indication information;

[0238] If the UE supports NTN but does not support the store-and-forward mode, ignore the first access indication information;

[0239] If the UE supports the store-and-forward mode, determining whether the network device supports the store-and-forward mode based on whether the first access indication information appears;

[0240] In the case that the UE supports the store-and-forward mode, it is determined whether to prohibit access to the network device through the store-and-forward mode based on the value of the first access indication information.

[0241] As an optional implementation manner, the access control information further includes second access indication information, and the second access indication information is configured to indicate that access to the current cell is prohibited.

[0242] As an optional implementation manner, the processor 330 is further configured to read the computer program in the memory 310 and perform the following operations:

[0243] In case the UE supports the store-and-forward mode, the second access indication information is ignored.

[0244] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

[0245] As an optional implementation manner, the processor 330 is further configured to read the computer program in the memory 310 and perform the following operations:

[0246] In case the UE supports the store-and-forward mode, the third access indication information is ignored.

[0247] As an optional implementation manner, the access control information further includes one or more of the following:

[0248] Store and forward intra-frequency cell reselection indication information;

[0249] UAC parameters for store-and-forward mode;

[0250] PLMN list for store-and-forward mode;

[0251] TA list in store-and-forward mode;

[0252] Business type of store-and-forward mode;

[0253] Slicing in store-and-forward mode;

[0254] Access type of store-and-forward mode;

[0255] Access identity in store-and-forward mode.

[0256] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device may be a USB storage device, other personal computer memory devices, and a dongle. It may also communicate with one or more core networks (CN) via a radio access network (RAN). A wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablet computers, Machine-type Communication (MTC) terminal devices, etc. Wireless terminal devices may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminal devices, access terminal devices, user terminal devices, user agents, user devices, and wireless access points and routers / modems that meet the limitations of this definition, but are not limited in the embodiments of the present disclosure.

[0257] It should be noted here that the above-mentioned UE provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0258] The embodiment of the present disclosure further provides a network device, as shown in FIG4 , including a memory 410 , a transceiver 420 , and a processor 430 ;

[0259] The memory 410 is used to store computer programs; the transceiver 420 is used to send and receive data under the control of the processor 430; and the processor 430 is used to read the computer program in the memory 410 and perform the following operations:

[0260] Send access control information; wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0261] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0262] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0263] As an optional implementation manner, sending access control information includes one or more of the following:

[0264] In the NTN cell in the store-and-forward mode, broadcasting first access indication information;

[0265] In a TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

[0266] As an optional implementation manner, the access control information further includes second access indication information, where the second access indication information is used to indicate whether access is prohibited to the current cell. Sending the access control information includes:

[0267] In the NTN cell in the store-and-forward mode, second access indication information is broadcasted, and a value of the second access indication information is prohibited.

[0268] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN and sending access control information, including one or more of the following:

[0269] In the NTN cell in the store-and-forward mode, third access indication information is broadcasted, where the value of the third access indication information is prohibited;

[0270] In the NTN cell not in the store-and-forward mode, broadcasting third access indication information;

[0271] In an NTN cell in store-and-forward mode, the third access indication information does not appear.

[0272] As an optional implementation manner, the access control information further includes one or more of the following:

[0273] Store and forward intra-frequency cell reselection indication information;

[0274] UAC parameters for store-and-forward mode;

[0275] PLMN list for store-and-forward mode;

[0276] TA list in store-and-forward mode;

[0277] Business type of store-and-forward mode;

[0278] Slicing in store-and-forward mode;

[0279] Access type of store-and-forward mode;

[0280] Access identity in store-and-forward mode.

[0281] The network device involved in the embodiments of the present disclosure may be a satellite, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the satellite may also be referred to as an access point, or may be a device in an access network that communicates with a wireless terminal device via one or more sectors on an air interface, or may be referred to by other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface.

[0282] It should be noted here that the above-mentioned network device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0283] In Figures 3 and 4 , the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits, represented by one or more processors and memory, represented by memory. The bus architecture can also link various other circuits, such as peripherals, voltage regulators, and power management circuits. These are well known in the art and are therefore not described further herein. The bus interface provides an interface. The transceiver is used to receive and transmit data under the control of the processor. The transceiver can be multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, or an optical cable. The processor is responsible for managing the bus architecture and general processing, while the memory can store data used by the processor when performing operations. The processor can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0284] An embodiment of the present disclosure provides an access control device, which is applied to a UE. As shown in FIG5 , the device includes:

[0285] The receiving unit 510 is configured to receive access control information sent by a network device; wherein the access control information is used to control the UE to access the network device through a store-and-forward mode.

[0286] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0287] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0288] As an optional embodiment, the device further includes one or more of the following:

[0289] The first processing unit is configured to ignore the first access indication information when the UE does not support NTN;

[0290] The second processing unit is configured to ignore the first access indication information when the UE supports NTN but does not support the store-and-forward mode;

[0291] A first determining unit is configured to determine whether the network device supports the store-and-forward mode based on whether the first access indication information appears when the UE supports the store-and-forward mode;

[0292] The second judgment unit is used to judge whether to prohibit access to the network device through the store-and-forward mode based on the value of the first access indication information when the UE supports the store-and-forward mode.

[0293] As an optional implementation manner, the access control information further includes second access indication information, and the second access indication information is configured to indicate that access to the current cell is prohibited.

[0294] As an optional embodiment, the device further includes:

[0295] The third processing unit is configured to ignore the second access indication information when the UE supports the store-and-forward mode.

[0296] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

[0297] As an optional embodiment, the device further includes:

[0298] The fourth processing unit is configured to ignore the third access indication information when the UE supports the store-and-forward mode.

[0299] As an optional implementation manner, the access control information further includes one or more of the following:

[0300] Store and forward intra-frequency cell reselection indication information;

[0301] UAC parameters for store-and-forward mode;

[0302] PLMN list for store-and-forward mode;

[0303] TA list in store-and-forward mode;

[0304] Business type of store-and-forward mode;

[0305] Slicing in store-and-forward mode;

[0306] Access type of store-and-forward mode;

[0307] Access identity in store-and-forward mode.

[0308] An embodiment of the present disclosure provides an access control device, which is applied to a network device. As shown in FIG6 , the device includes:

[0309] The sending unit 610 is configured to send access control information, wherein the access control information is used to control the UE to access the network device through the store-and-forward mode.

[0310] As an optional implementation, the access control information is configured for one or more of the cell, PLMN, TA, service type, slice, access type or access identity.

[0311] As an optional implementation manner, the access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through the store-and-forward mode.

[0312] As an optional implementation manner, the sending unit 610 is specifically configured to do one or more of the following:

[0313] In the NTN cell in the store-and-forward mode, broadcasting first access indication information;

[0314] In a TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

[0315] As an optional implementation manner, the access control information further includes second access indication information, where the second access indication information is used to indicate whether access is prohibited to the current cell. The sending unit 610 is specifically configured to:

[0316] In the NTN cell in the store-and-forward mode, second access indication information is broadcasted, and a value of the second access indication information is prohibited.

[0317] As an optional implementation manner, the access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN. The sending unit 610 is specifically configured to perform one or more of the following:

[0318] In the NTN cell in the store-and-forward mode, third access indication information is broadcasted, where the value of the third access indication information is prohibited;

[0319] In the NTN cell not in the store-and-forward mode, broadcasting third access indication information;

[0320] In an NTN cell in store-and-forward mode, the third access indication information does not appear.

[0321] As an optional implementation manner, the access control information further includes one or more of the following:

[0322] Store and forward intra-frequency cell reselection indication information;

[0323] UAC parameters for store-and-forward mode;

[0324] PLMN list for store-and-forward mode;

[0325] TA list in store-and-forward mode;

[0326] Business type of store-and-forward mode;

[0327] Slicing in store-and-forward mode;

[0328] Access type of store-and-forward mode;

[0329] Access identity in store-and-forward mode.

[0330] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0331] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the various embodiments of the present disclosure.

[0332] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0333] An embodiment of the present disclosure provides a communication system, which includes a UE and a network device; wherein the UE executes the steps of any access control method executed by the above-mentioned UE, and the network device executes the steps of any access control method executed by the above-mentioned network device.

[0334] An embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any of the above-mentioned access control methods are implemented.

[0335] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0336] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0337] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0338] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0339] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. An access control method, wherein: The method is applied to user equipment UE, and the method includes: Receive access control information sent by a network device; wherein the access control information is used to control the UE to access the network device through a store-and-forward mode.

2. The method according to claim 1, wherein The access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

3. The method according to claim 1 or 2, wherein: The access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through a store-and-forward mode.

4. The method according to claim 3, wherein: The method may further comprise one or more of the following: If the UE does not support a non-terrestrial network (NTN), ignore the first access indication information; If the UE supports NTN but does not support store-and-forward mode, ignore the first access indication information; If the UE supports the store-and-forward mode, determining whether the network device supports the store-and-forward mode based on whether the first access indication information appears; In a case where the UE supports the store-and-forward mode, it is determined whether access to the network device through the store-and-forward mode is prohibited based on a value of the first access indication information.

5. The method according to claim 3, wherein The access control information further includes second access indication information, where the second access indication information is configured to indicate that access to the current cell is prohibited.

6. The method according to claim 5, wherein: The method further comprises: In a case where the UE supports the store-and-forward mode, the second access indication information is ignored.

7. The method according to claim 3, wherein: The access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

8. The method according to claim 7, wherein: The method further comprises: In a case where the UE supports the store-and-forward mode, the third access indication information is ignored.

9. The method according to claim 1, wherein The access control information may further include one or more of the following: Store and forward intra-frequency cell reselection indication information; Unified Access Control (UAC) parameters for store-and-forward mode; PLMN list for store-and-forward mode; TA list in store-and-forward mode; Business type of store-and-forward mode; Slicing in store-and-forward mode; Access type of store-and-forward mode; Access identity in store-and-forward mode.

10. An access control method, wherein: The method is applied to a network device, and the method includes: Sending access control information; wherein, the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

11. The method according to claim 10, wherein: The access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

12. The method according to claim 10 or 11, wherein: The access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through a store-and-forward mode.

13. The method according to claim 12, wherein: The sending of access control information includes one or more of the following: Broadcasting the first access indication information in a non-terrestrial network NTN cell in a store-and-forward mode; In a terrestrial network TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

14. The method according to claim 12, wherein: The access control information further includes second access indication information, where the second access indication information is used to indicate whether access to the current cell is prohibited. The sending of the access control information includes: In the NTN cell in the store-and-forward mode, the second access indication information is broadcast, and a value of the second access indication information is prohibited.

15. The method according to claim 12, wherein: The access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN. The sending of the access control information includes one or more of the following: In the NTN cell in the store-and-forward mode, broadcast the third access indication information, where the value of the third access indication information is prohibit; In an NTN cell that is not in store-and-forward mode, broadcast the third access indication information; In an NTN cell in store-and-forward mode, the third access indication information does not appear.

16. The method according to claim 10, wherein The access control information may further include one or more of the following: Store and forward intra-frequency cell reselection indication information; Unified Access Control (UAC) parameters for store-and-forward mode; PLMN list for store-and-forward mode; TA list in store-and-forward mode; Business type of store-and-forward mode; Slicing in store-and-forward mode; Access type of store-and-forward mode; Access identity in store-and-forward mode.

17. A user equipment UE, wherein: including memory, transceiver and processor; The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations: Receive access control information sent by a network device; wherein the access control information is used to control the UE to access the network device through a store-and-forward mode.

18. The UE according to claim 17, wherein: The access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

19. The UE according to claim 17 or 18, wherein: The access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through a store-and-forward mode.

20. The UE according to claim 19, wherein: The processor is further configured to read the computer program in the memory and perform one or more of the following operations: If the UE does not support a non-terrestrial network (NTN), ignore the first access indication information; If the UE supports NTN but does not support store-and-forward mode, ignore the first access indication information; If the UE supports the store-and-forward mode, determining whether the network device supports the store-and-forward mode based on whether the first access indication information appears; In a case where the UE supports the store-and-forward mode, it is determined whether access to the network device through the store-and-forward mode is prohibited based on a value of the first access indication information.

21. The UE according to claim 19, wherein: The access control information further includes second access indication information, where the second access indication information is configured to indicate that access to the current cell is prohibited.

22. The UE according to claim 21, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: In a case where the UE supports the store-and-forward mode, the second access indication information is ignored.

23. The UE according to claim 19, wherein: The access control information further includes third access indication information, where the third access indication information is configured to indicate that the UE is prohibited from accessing the network device through the NTN.

24. The UE according to claim 23, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: In a case where the UE supports the store-and-forward mode, the third access indication information is ignored.

25. The UE according to claim 17, wherein The access control information may further include one or more of the following: Store and forward intra-frequency cell reselection indication information; Unified Access Control (UAC) parameters for store-and-forward mode; PLMN list for store-and-forward mode; TA list in store-and-forward mode; Business type of store-and-forward mode; Slicing in store-and-forward mode; Access type of store-and-forward mode; Access identity in store-and-forward mode.

26. A network device, wherein: including memory, transceiver and processor; The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations: Sending access control information; wherein, the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

27. The network device according to claim 26, wherein: The access control information is configured for one or more of a cell, a public land mobile network PLMN, a tracking area TA, a service type, a slice, an access category or an access identity.

28. The network device according to claim 26 or 27, wherein: The access control information includes first access indication information, where the first access indication information is used to indicate whether to prohibit the UE from accessing the network device through a store-and-forward mode.

29. The network device according to claim 28, wherein: The sending of access control information includes one or more of the following: Broadcasting the first access indication information in a non-terrestrial network NTN cell in a store-and-forward mode; In a terrestrial network TN cell and an NTN cell in non-store-and-forward mode, the first access indication information does not appear.

30. The network device according to claim 28, wherein The access control information further includes second access indication information, where the second access indication information is used to indicate whether access to the current cell is prohibited. The sending of the access control information includes: In the NTN cell in the store-and-forward mode, the second access indication information is broadcast, and a value of the second access indication information is prohibited.

31. The network device according to claim 28, wherein: The access control information further includes third access indication information, where the third access indication information is used to indicate whether to prohibit the UE from accessing the network device through the NTN. The sending of the access control information includes one or more of the following: In the NTN cell in the store-and-forward mode, broadcast the third access indication information, where the value of the third access indication information is prohibit; In an NTN cell that is not in store-and-forward mode, broadcast the third access indication information; In an NTN cell in store-and-forward mode, the third access indication information does not appear.

32. The network device according to claim 26, wherein: The access control information may further include one or more of the following: Store and forward intra-frequency cell reselection indication information; Unified Access Control (UAC) parameters for store-and-forward mode; PLMN list for store-and-forward mode; TA list in store-and-forward mode; Business type of store-and-forward mode; Slicing in store-and-forward mode; Access type of store-and-forward mode; Access identity in store-and-forward mode.

33. An access control device, wherein: The device is applied to a user equipment UE, and includes: A receiving unit is used to receive access control information sent by a network device; wherein the access control information is used to control the UE to access the network device through a store-and-forward mode.

34. An access control device, wherein: The device is applied to a network device, and includes: A sending unit is used to send access control information; wherein, the access control information is used to control the user equipment UE to access the network device through the store-and-forward mode.

35. A computer-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 or 10 to 16 are implemented.

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