Access control method and device, terminal and network side equipment

Abstract

The invention discloses an access control method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the access control method comprises the steps that the terminal obtains cell access related information of a non-terrestrial network NTN cell, the cell access related information comprises first information, and the first information is sent to the terminal; the first information is used for indicating whether the NTN access of the NTN cell is prohibited; and judging whether the NTN cell is prohibited or not according to the first information and the capability of the terminal.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an access control method, apparatus, terminal, and network-side device. Background Art

[0002] In related technologies, for a terminal that only has terrestrial network (TN) capabilities but can support access to a 5G core network (5GC), it may attempt to camp on a non-terrestrial network (NTN) cell connected to the 5GC and attempt to obtain normal services. However, in this case, the normal registration of the terminal will be rejected by the network, and the terminal needs to reselect other cells to camp on and attempt registration, which will cause delays in the terminal obtaining normal services. Therefore, how to effectively perform access control for NTN cells is an urgent problem to be solved currently. Summary of the Invention

[0003] Embodiments of this application provide an access control method, apparatus, terminal, and network-side device, which can solve the problem of how to effectively perform access control for NTN cells.

[0004] In a first aspect, an access control method is provided, which is executed by a terminal. The method includes:

[0005] The terminal obtains cell access-related information of a non-terrestrial network (NTN) cell, where the cell access-related information includes first information, and the first information is used to indicate whether NTN access to the NTN cell is prohibited;

[0006] The terminal determines whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

[0007] In a second aspect, an access control method is provided, which is executed by a network-side device. The method includes:

[0008] The network-side device sends cell access-related information of an NTN cell to the terminal, where the cell access-related information includes first information, the first information is used to indicate whether NTN access to the NTN cell is prohibited, and the first information is used to determine whether the NTN cell is prohibited.

[0009] In a third aspect, an access control apparatus is provided, which is applied to a terminal and includes:

[0010] An obtaining module, configured to obtain cell access-related information of an NTN cell, where the cell access-related information includes first information, and the first information is used to indicate whether NTN access to the NTN cell is prohibited;

[0011] A determination module, configured to determine whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

[0012] In a fourth aspect, an access control device is provided, which is applied to a network-side device and includes:

[0013] A sending module, configured to send cell access-related information of an NTN cell to a terminal, where the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access, and the first information is used to determine whether the NTN cell is prohibited.

[0014] In a fifth aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0015] In a sixth aspect, a terminal is provided, which includes a processor and a communication interface. The communication interface is configured to obtain cell access-related information of an NTN cell, where the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access; the processor is configured to determine whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

[0016] In a seventh aspect, a network-side device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0017] In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface. The communication interface is configured to send cell access-related information of an NTN cell to a terminal, where the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access, and the first information is used to determine whether the NTN cell is prohibited.

[0018] In a ninth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0019] In a tenth aspect, a wireless communication system is provided, which includes: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0020] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface, and the communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0021] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0022] In the embodiments of the present application, a terminal can obtain cell access related information of a non-terrestrial network (NTN) cell. The cell access related information includes first information, and the first information is used to indicate whether NTN access to the NTN cell is prohibited; and based on the first information and the capabilities of the terminal, it is determined whether the NTN cell is prohibited. Thus, by means of the solution in the present application, the terminal can determine whether access to the NTN cell is prohibited before registration, thereby avoiding ineffective attempts and reducing the latency of the terminal accessing the cell, and effectively performing access control for the NTN cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0024] Figure 2 is a flowchart of an access control method provided by the embodiments of the present application;

[0025] Figure 3 is a flowchart of another access control method provided by the embodiments of the present application;

[0026] Figure 4 is a schematic structural diagram of an access control device provided by the embodiments of the present application;

[0027] Figure 5 is a schematic structural diagram of another access control device provided by the embodiments of the present application;

[0028] Figure 6 is a schematic structural diagram of a communication device provided by the embodiments of the present application;

[0029] Figure 7 is a schematic structural diagram of a terminal provided by the embodiments of the present application;

[0030] Figure 8 is a schematic structural diagram of a network side device provided by the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application fall within the protection scope of the present application.

[0032] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0033] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the recipient of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the recipient determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0034] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0035] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, vehicle-mounted devices can also be referred to as vehicle-mounted terminals, vehicle-mounted controllers, vehicle-mounted modules, vehicle-mounted components, vehicle-mounted chips, or vehicle-mounted units, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms.

[0036] To facilitate the understanding of the embodiments of the present application, the following content is first described.

[0037] Non-Terrestrial Networks (NTN) refer to a network or network segment that uses platforms such as satellites, Unmanned Aircraft System (UAS), or High-Altitude Platform System (HAPS) for transmission. Compared with terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage range. Typical applicable scenarios include situations where it is impossible to build terrestrial base stations and / or terrestrial base stations are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, forests, etc., or emergency communication during natural disasters or when terrestrial base stations are damaged.

[0038] Optionally, the satellite can include, but is not limited to, Low Earth Orbiting (LEO) satellites, Medium Earth Orbiting (MEO) satellites, Geostationary Earth Orbiting (GEO) satellites, and Highly Elliptical Orbiting (HEO) satellites, etc.

[0039] Typical scenarios of non-terrestrial networks (NTN) include transparent forwarding and signal regeneration. In transparent forwarding, the satellite acts as a relay. The link between the satellite and the terminal is the service link, and the link between the satellite and the terrestrial base station is the feeder link.

[0040] The following, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, will detail the access control method, device, terminal, and network-side device provided by the embodiments of the present application.

[0041] Please refer to Figure 2 , Figure 2 which is a flowchart of an access control method provided by the embodiments of the present application. This method is executed by the terminal. As Figure 2 shown, the method includes the following steps:

[0042] Step 21: The terminal obtains cell access-related information of the NTN cell. The cell access-related information includes first information, and the first information is used to indicate whether NTN access to the NTN cell is prohibited.

[0043] Step 22: The terminal determines whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

[0044] In the embodiments of the present application, determining whether the NTN cell is prohibited can be understood as: determining whether the terminal can access the NTN cell.

[0045] Optionally, the capabilities of the terminal include supporting NTN access, such as supporting connecting to the EPC through NTN, supporting connecting to the 5GC through NTN, etc.

[0046] Optionally, the terminal can be at least one of an enhanced machine type communications (eMTC) terminal and a narrow band Internet of things (NB-IoT) terminal. eMTC terminals and NB-IoT terminals support accessing the terrestrial network (TN) and can support accessing the non-terrestrial network (NTN).

[0047] Optionally, the cell access-related information can be provided by parameters SystemInformationBlockType1 / SIB1, SystemInformationBlockType1-BR / SIB1-BR, or SystemInformationBlockType1-NB / SIB1-NB, specifically, for example, through the parameter cellAccessRelatedInfo.

[0048] Thus, by means of the solution in the embodiment of the present application, it is possible to enable the terminal to determine whether the NTN cell is prohibited from access before registration, thereby avoiding ineffective attempts, reducing the delay of the terminal accessing the cell, and effectively performing access control for the NTN cell. Moreover, since the terminal can avoid ineffective access attempts, the power consumption of the terminal can also be reduced.

[0049] Optionally, the cell access related information further includes at least one of a first indication and a second indication; the first indication is used to indicate whether the cell is prohibited from connecting to the first core network, and the second indication is used to indicate whether the cell is prohibited from connecting to the second core network. The cell supports connecting to at least one of the first core network and the second core network.

[0050] Optionally, when the NTN cell supports connecting to the first core network, the cell access related information includes a first indication, and the first indication is set to prohibited, that is, it indicates that the NTN cell is prohibited from connecting to the first core network.

[0051] Optionally, when the NTN cell supports connecting to the second core network, the cell access related information includes a second indication, and the second indication is set to prohibited, that is, it indicates that the NTN cell is prohibited from connecting to the first core network.

[0052] Optionally, the first core network is different from the second core network. The first core network may be any one of the following: Evolved Packet Core (EPC), 5GC, 6G core network; the second core network may be any one of the following: EPC, 5GC, 6G core network. For example, the first core network is EPC and the second core network is 5GC; or, the first core network is EPC and the second core network is 6G core network; and so on.

[0053] For example, the solution in this embodiment is the behavior of the TN terminal. For instance, a terminal that supports accessing the TN cell through the EPC but does not support connecting to the NTN cell through the EPC can determine that the corresponding cell is prohibited from connecting to the EPC according to the obtained first indication, and thus consider the corresponding cell to be prohibited. Another example is that a terminal that supports accessing the TN cell through the 5GC but does not support connecting to the NTN cell through the 5GC can determine that the corresponding cell is prohibited from connecting to the 5GC according to the obtained second indication, and thus consider the corresponding cell to be prohibited.

[0054] For example, the first indication is cellBarred and is set to "barred", which is used to indicate that the cell is prohibited from accessing the EPC; the second indication is cellBarred-5GC and is set to "barred", which is used to indicate that the cell is prohibited from accessing the 5GC. For an NTN cell, the cell access related information always includes at least one of the first indication and the second indication used to indicate whether the cell is prohibited, and cellBarred and cellBarred-5GC therein are set to "barred". More specifically, for an NTN cell supporting connection to the EPC, the cell access related information always includes an indication (such as cellBarred) used to indicate whether the cell is prohibited from connecting to the EPC, and this indication is set to "Barred"; for an NTN cell supporting connection to the 5GC, the cell access related information always includes an indication (such as cellBarred-5GC) used to indicate whether the cell is prohibited from connecting to the 5GC, and this indication is set to "Barred". It can be understood that if the NTN cell supports both connection to the EPC and connection to the 5GC, the cell access related information always includes an indication (such as cellBarred) used to indicate whether the cell is prohibited from connecting to the EPC and an indication (such as cellBarred-5GC) used to indicate whether the cell is prohibited from connecting to the 5GC, and these two indications are set to "Barred".

[0055] Optionally, determining whether the NTN cell is prohibited may include:

[0056] The terminal performs a first behavior according to the first information and the capabilities of the terminal; the first behavior includes at least one of the following:

[0057] Ignore the first indication, that is, ignore that the NTN cell indicated by the first indication is prohibited from connecting to the first core network, and no longer consider the first indication when determining whether the NTN cell is prohibited;

[0058] Ignore the second indication, that is, ignore that the NTN cell indicated by the second indication is prohibited from connecting to the second core network, and no longer consider the first indication when determining whether the NTN cell is prohibited;

[0059] Determine that the NTN cell is prohibited from connecting to the first core network through the NTN;

[0060] Determine that the NTN cell is allowed or not prohibited from connecting to the first core network through the NTN;

[0061] Determine that the NTN cell is prohibited from connecting to the second core network through the NTN;

[0062] Determine whether the NTN cell is allowed or prohibited from connecting to the second core network via NTN.

[0063] In this way, by performing the first action, the terminal can determine whether the corresponding NTN cell is prohibited from access before registration, thereby avoiding ineffective attempts and reducing the latency of the terminal accessing the cell.

[0064] Optionally, the capabilities of the terminal include at least one of the following:

[0065] The first capability is used to indicate that the terminal supports connecting to the first core network via NTN; additionally, a terminal with the first capability must support connecting to the first core network via the access network.

[0066] The second capability is used to indicate that the terminal supports connecting to the second core network via NTN; additionally, a terminal with the second capability must support connecting to the second core network via the access network.

[0067] It should be noted that the terminal having the first capability and / or the second capability can also be collectively referred to as the terminal having the ability to access NTN. The terminal not having the first capability and the second capability can also be collectively referred to as the terminal not having the ability to access NTN. For example, the first capability can be expressed as ntn-Connectivity-EPC, which is used to indicate that the terminal supports connecting to the EPC via NTN; the second capability can be expressed as ntn-Connectivity-5GC, which is used to indicate that the terminal supports connecting to the 5GC via NTN.

[0068] In the embodiments of the present application, different methods can be used to set the first information, which is described as follows.

[0069] Method 1:

[0070] In this Method 1, the first information includes a third indication, and the third indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network (such as EPC) and the second core network (such as 5GC) via NTN. The first information including the third indication can be understood as the access is for NTN, or the accessed cell is an NTN cell.

[0071] Optionally, the execution of the first action may include:

[0072] When the first information includes the third indication and the terminal supports NTN access, that is, has the ability to access NTN, the terminal ignores at least one of the first indication and the second indication.

[0073] Optionally, when the first information includes a third indication and the terminal supports NTN access, the terminal ignoring at least one of the first indication and the second indication may include at least one of the following:

[0074] 1) When the first information includes the third indication and the terminal has a first capability, the terminal ignores the first indication;

[0075] 2) When the first information includes the third indication and the terminal has a first capability, the terminal ignores the second indication;

[0076] 3) When the first information includes the third indication and the terminal has a first capability, the terminal ignores both the first indication and the second indication;

[0077] 4) When the first information includes the third indication and the terminal has a second capability, the terminal ignores the first indication;

[0078] 5) When the first information includes the third indication and the terminal has a second capability, the terminal ignores the second indication;

[0079] 6) When the first information includes the third indication and the terminal has a second capability, the terminal ignores both the first indication and the second indication.

[0080] In the above 1) to 6), the first capability is used to indicate that the terminal supports connecting to a first core network (such as EPC) via NTN; the second capability is used to indicate that the terminal supports connecting to a second core network (such as 5GC) via NTN.

[0081] For example, the third indication reuses the existing cellBarred-NTN and extends the meaning of this indication to indicate whether the cell is prohibited from connecting to the 5GC via NTN. In this case, if the first information includes cellBarred-NTN, then: ① When the terminal has the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC), the terminal ignores the first indication (such as cellBarred). It can be understood that a terminal with the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC) but without the second capability (such as ntn-Connectivity-5GC, that is, it supports accessing NTN via 5GC) only ignores the first indication (such as cellBarred) and does not ignore the second indication (such as cellBarred-5GC), that is, such a terminal can still determine whether the cell is prohibited according to the second indication (such as cellBarred-5GC); ② When the terminal has the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC), the terminal ignores the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC); ③ When the terminal has the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC), the terminal ignores the second indication (such as cellBarred-5GC). It can be understood that a terminal with the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC) but without the second capability (such as ntn-Connectivity-5GC, that is, it supports accessing NTN via 5GC) only ignores the second indication (such as cellBarred-5GC) and does not ignore the first indication (such as cellBarred), that is, such a terminal can still determine whether the cell is prohibited according to the first indication (such as cellBarred); ④ When the terminal has the second capability (such as ntn-Connectivity-5GC, that is, it supports accessing NTN via 5GC), the terminal ignores the first indication (such as cellBarred). It can be understood that a terminal with the second capability (such as ntn-Connectivity-5GC, that is, it supports accessing NTN via 5GC) but without the first capability (such as ntn-Connectivity-EPC, that is, it supports accessing NTN via EPC) only ignores the first indication (such as cellBarred) and does not ignore the second indication (such as cellBarred-5GC), that is, such a terminal can still determine whether the cell is prohibited according to the second indication (such as cellBarred-5GC);⑤ When the terminal has a second capability (such as ntn-Connectivity-5GC, which means supporting access to NTN through 5GC), the terminal ignores the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC); ⑥ When the terminal has a second capability (such as ntn-Connectivity-5GC, which means supporting access to NTN through 5GC), the terminal ignores the second indication (such as cellBarred-5GC). It can be understood that a terminal with the second capability (such as ntn-Connectivity-5GC, which means supporting access to NTN through 5GC) but without the first capability (such as ntn-Connectivity-EPC, which means supporting access to NTN through EPC) only ignores the second indication (such as cellBarred-5GC) and does not ignore the first indication (such as cellBarred), that is, such a terminal can still determine whether the cell is prohibited according to the first indication (such as cellBarred).;

[0082] Optionally, in this method 1, the third indication can be set to prohibited (such as "barred") or not prohibited (such as "notBarred"). The execution of the first action may include at least one of the following:

[0083] a) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a third indication, and the third indication is set to prohibited such as "barred", the terminal determines that the NTN cell is prohibited from accessing the first core network and the second core network through NTN;

[0084] b) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a third indication, and the third indication is set to not prohibited such as "notBarred", the terminal determines that the NTN cell is allowed or not prohibited from accessing the first core network and the second core network through NTN.

[0085] For example, the third indication reuses the existing cellBarred-NTN and extends the meaning of this indication to indicate whether a cell is prohibited from accessing the 5GC via NTN. In this case, if a terminal supports NTN access and the first information it obtains includes cellBarred-NTN and this cellBarred-NTN is set to "barred", it can be determined that the corresponding NTN cell is prohibited from accessing the first core network (such as EPC) and the second core network (such as 5GC) via NTN; or, if a terminal supports NTN access and the first information it obtains includes cellBarred-NTN and this cellBarred-NTN is set to "notBarred", it can be determined that the corresponding NTN cell is allowed or not prohibited from accessing the first core network (such as EPC) and the second core network (such as 5GC) via NTN.

[0086] It should be noted that in this way 1, that is, extending the existing cellBarred-NTN to 5GC, terminals with the first capability need to support NTN access, and terminals with the second capability need to support NTN access, that is, support the following optimizations:

[0087] - General:

[0088] - Process cellBarred-NTN-r17 (i.e., the third indication in this embodiment) and trackingAreaList-r17 in SystemInformationBlockType1 (-NB);

[0089] - Receive SystemInformationBlockType31 (-NB);

[0090] - Derive the location of the terminal based on the measurement of the Global Navigation Satellite System (GNSS);

[0091] - Report the remaining valid duration of the GNSS;

[0092] - For the Packet Data Convergence Protocol (PDCP) layer:

[0093] - If the terminal supports ce-ModeA-r13, support the extension of the discard Timer, that is, support discardTimerExt-r17;

[0094] - For the Radio Link Control (RLC) layer:

[0095] - Support t-ReorderingExt-r17;

[0096] - For the Medium Access Control (MAC) layer:

[0097] - Estimate the round-trip time (RTT) between the UE and the gNB;

[0098] - Delay the start time of the RA response window;

[0099] - Delay the start time of the mac-ContentionResolutionTimer;

[0100] - If the terminal supports ce-ModeA-r13 or any ue-Category-NB and supports sr-WithoutHARQ-ACK-r15, then process sr-ProhibitTimerOffset-r17;

[0101] - Extend the length of the uplink (UL) HARQ RTT timer;

[0102] - For the Physical layer

[0103] - Calculate the UE-specific Timing Advance (TA) in the RRC_IDLE and RRC_CONNECTED states based on the location obtained by the terminal's GNSS and the serving satellite ephemeris;

[0104] - Calculate the common Timing Advance (TA) in the RRC_IDLE and RRC_CONNECTED states;

[0105] - In the RRC_CONNECTED state, support TA updates that combine open-loop (such as UE-specific TA estimation and common TA calculation) and closed-loop (such as received TA commands);

[0106] - Frequency pre-compensation to offset the Doppler frequency shift experienced on the serving link;

[0107] - Enhance the time relationship using the high-layer parameters k-Offset-r17 and k-Mac-r17;

[0108] - Except for terminals supporting ue-Category-NB and ntn-ScenarioSupport-r17 with the value of GSO, segmented uplink transmission is implemented using the high-layer parameters prach-TxDuration-r17, nprach-TxDurationFmt01-r17, nprach-TxDurationFmt2-r17, pucch-TxDuration-r17, and (n)pusch-TxDuration-r17.

[0109] Method 2:

[0110] In this Method 2, the first information includes at least one of a fourth indication and a fifth indication. The fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network (such as EPC) through NTN; the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network (such as 5GC) through NTN. The first information including the fourth indication or the fifth indication can be understood as the access is for NTN, or it can be understood that the accessed cell is an NTN cell.

[0111] Optionally, the execution of the first action may include at least one of the following:

[0112] When the first information includes at least one of the fourth indication and the fifth indication, and the terminal supports NTN access, that is, the terminal has the ability to access NTN, the terminal ignores at least one of the first indication and the second indication.

[0113] Optionally, when the first information includes at least one of the fourth indication and the fifth indication, and the terminal supports NTN access, the terminal ignoring at least one of the first indication and the second indication may include at least one of the following:

[0114] (1) When the first information only includes the fourth indication, and the terminal has the first ability, the terminal ignores the first indication;

[0115] (2) When the first information only includes the fourth indication, and the terminal has the first ability, the terminal ignores the second indication;

[0116] (3) When the first information only includes the fourth indication, and the terminal has the first ability, the terminal ignores the first indication and the second indication;

[0117] (4) When the first information only includes the fifth indication, and the terminal has the second ability, the terminal ignores the first indication;

[0118] (5) When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the second indication;

[0119] (6) When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the first indication and the second indication;

[0120] (7) When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the first indication;

[0121] (8) When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the second indication;

[0122] (9) When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the first indication and the second indication.

[0123] In the above (1) to (9), the first capability is used to indicate that the terminal supports connecting to the first core network (such as EPC) through NTN; the second capability is used to indicate that the terminal supports connecting to the second core network (such as 5GC) through NTN.

[0124] For example, a new indication (such as cellBarred-NTN-5GC) can be introduced to indicate whether a cell is prohibited from connecting to 5GC via NTN, and the existing cellBarred-NTN is only used to indicate whether a cell is prohibited from connecting to EPC via NTN.In this case, ① if the first information only includes the fourth indication (such as cellBarred-NTN), then when the terminal has the first capability (such as ntn-Connectivity-EPC, that is, supports accessing NTN through EPC), the terminal can perform one of the following: ignore the first indication (such as cellBarred), ignore the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC), ignore the second indication (such as cellBarred-5GC); ② if the first information only includes the fifth indication (such as cellBarred-NTN-5GC), then when the terminal has the second capability (such as ntn-Connectivity-5GC, that is, supports accessing NTN through 5GC), the terminal can perform one of the following: ignore the first indication (such as cellBarred), ignore the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC), ignore the second indication (such as cellBarred-5GC); ③ if the first information includes the fourth indication (such as cellBarred-NTN) and the fifth indication (such as cellBarred-NTN-5GC), then when the terminal has the first capability (such as ntn-Connectivity-EPC, that is, supports accessing NTN through EPC), the terminal can perform one of the following: ignore the first indication (such as cellBarred), ignore the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC), ignore the second indication (such as cellBarred-5GC); or, when the terminal has the second capability (such as ntn-Connectivity-5GC, that is, supports accessing NTN through 5GC), the terminal can perform one of the following: ignore the first indication (such as cellBarred), ignore the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC), ignore the second indication (such as cellBarred-5GC); or, when the terminal has the first capability (such as ntn-Connectivity-EPC, that is, supports accessing NTN through EPC) and the second capability (such as ntn-Connectivity-5GC, that is, supports accessing NTN through 5GC), the terminal can perform one of the following: ignore the first indication (such as cellBarred), ignore the first indication (such as cellBarred) and the second indication (such as cellBarred-5GC), ignore the second indication (such as cellBarred-5GC).It can be understood that if the terminal only ignores the first indication and does not ignore the second indication, it means that the terminal can still determine whether the cell is prohibited based on the second indication; if the terminal only ignores the second indication and does not ignore the first indication, it means that the terminal can still determine whether the cell is prohibited based on the first indication.

[0125] For example, in the case where the network broadcasts cellBarred-NTN or cellBarred-NTN-5GC, a terminal that supports NTN access (i.e., has the NTN access capability) can ignore cellBarred and cellBarred-5GC.

[0126] Optionally, in this method 2, the fourth indication can be set to prohibited (e.g., "barred") or not prohibited (e.g., "notBarred"), and the fifth indication can be set to prohibited (e.g., "barred") or not prohibited (e.g., "notBarred"). The execution of the first action may include at least one of the following:

[0127] (a) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a fourth indication, and the fourth indication is set to prohibited such as "barred", the terminal determines that the NTN cell is prohibited from accessing the first core network through NTN;

[0128] (b) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a fourth indication, and the fourth indication is set to not prohibited such as "notBarred", the terminal determines that the NTN cell is allowed or not prohibited from accessing the first core network through NTN;

[0129] (c) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a fifth indication, and the fifth indication is set to prohibited such as "barred", the terminal determines that the NTN cell is prohibited from accessing the second core network through NTN;

[0130] (d) When the terminal supports NTN access, that is, has the ability to access NTN, the first information includes a fifth indication, and the fifth indication is set to not prohibited such as "notBarred", the terminal determines that the NTN cell is allowed or not prohibited from accessing the second core network through NTN.

[0131] Optionally, when the first information includes a fourth indication and the terminal does not have the first capability, the terminal ignores the fourth indication, that is, ignores the relevant information indicated by the fourth indication; the first capability is used to indicate that the terminal supports connecting to the first core network through NTN.

[0132] Optionally, when the first information includes a fifth indication and the terminal does not have the second capability, the terminal ignores the fifth indication, that is, ignores the relevant information indicated by the fifth indication; the second capability is used to indicate that the terminal supports connecting to the second core network through NTN.

[0133] For example, a new indication (such as cellBarred-NTN-5GC) can be introduced to indicate whether a cell is prohibited from connecting to 5GC through NTN, and the existing cellBarred-NTN is only used to indicate whether a cell is prohibited from connecting to EPC through NTN. In this case, ① assuming that the terminal supports NTN access and the first information it obtains includes a fourth indication such as cellBarred-NTN, then: if the cellBarred-NTN is set to "barred", the terminal can determine that the corresponding NTN cell is prohibited from accessing the first core network (such as EPC) through NTN; or, if the cellBarred-NTN is set to "notBarred", the terminal can determine that the corresponding NTN cell is allowed or not prohibited from accessing the first core network (such as EPC) through NTN; that is, a terminal that supports connecting to EPC through NTN can determine whether the corresponding cell is prohibited based on cellBarred-NTN. Additionally, if the terminal does not support NTN access, for example, does not have the first capability (such as ntn-Connectivity-EPC), the terminal ignores the fourth indication. ② Assuming that the terminal supports NTN access and the first information it obtains includes a fifth indication such as cellBarred-NTN-5GC, then: if the cellBarred-NTN-5GC is set to "barred", the terminal can determine that the corresponding NTN cell is prohibited from accessing the second core network (such as 5GC) through NTN; or, if the cellBarred-NTN-5GC is set to "notBarred", the terminal can determine that the corresponding NTN cell is allowed or not prohibited from accessing the second core network (such as 5GC) through NTN; a terminal that supports connecting to 5GC through NTN can determine whether the corresponding cell is prohibited based on cellBarred-NTN-5GC. Additionally, if the terminal does not support NTN access, for example, does not have the second capability (such as ntn-Connectivity-5GC), the terminal ignores the fifth indication.

[0134] Optionally, in this method 2, the terminal can determine the network type of the NTN cell according to whether the first information includes the fourth indication and the fifth indication. Specifically, it may include at least one of the following:

[0135] When the first information does not include the fourth indication and the fifth indication, the terminal determines that the network type of the NTN cell is the terrestrial network TN;

[0136] When at least one of the first information includes a fourth indication and a fifth indication, the terminal determines that the network type of the NTN cell is a non-terrestrial network NTN.

[0137] For example, the terminal can implicitly determine the network type of the corresponding cell through the presence of a fourth indication (such as cellBarred-NTN) and a fifth indication (such as cellBarred-NTN-5GC), including at least one of the following:

[0138] - If neither the fourth indication (such as cellBarred-NTN) nor the fifth indication (such as cellBarred-NTN-5GC) exists, it is determined that the network type of the corresponding cell is a terrestrial network TN;

[0139] - If at least one of the fourth indication (such as cellBarred-NTN) and the fifth indication (such as cellBarred-NTN-5GC) exists, it is determined that the network type of the corresponding cell is a non-terrestrial network NTN.

[0140] It should be noted that in this method 2, that is, when introducing the new cellBarred-NTN-5GC, the following situations exist regarding the terminal capabilities:

[0141] Situation 1:

[0142] Define the functions required to support the first capability and the second capability respectively, that is:

[0143] Ⅰ) A terminal with the first capability (such as ntn-Connectivity-EPC-r17) needs to support NTN access, that is, support the following optimizations:

[0144] - General:

[0145] - Process cellBarred-NTN-r17 (i.e., the above-mentioned fourth indication) and trackingAreaList-r17 in SystemInformationBlockType1(-NB);

[0146] Other capabilities are the same as those described in the above method 1 and will not be elaborated here.

[0147] Ⅱ) A terminal with the second capability needs to support NTN access and support the following optimizations:

[0148] - Process cellBarred-NTN-5GC (i.e., the above-mentioned fifth indication) and trackingAreaList-r17 in SystemInformationBlockType1(-NB);

[0149] Other capabilities are the same as those described in the above Method 1 and will not be elaborated here.

[0150] Case 2:

[0151] Support for the second capability must support the first capability and also needs to support handling cellBarred-NTN-5GC, that is:

[0152] Ⅰ) A terminal with the first capability (such as ntn-Connectivity-EPC-r17) needs to support NTN access and support the following optimizations:

[0153] - General:

[0154] - Handle cellBarred-NTN-r17 (i.e., the above fourth indication) and trackingAreaList-r17 in SystemInformationBlockType1(-NB);

[0155] Other capabilities are the same as those described in the above Method 1 and will not be elaborated here.

[0156] Ⅱ) A terminal with the second capability needs to support the first capability and also needs to support: handling cellBarred-NTN-5GC (i.e., the above fifth indication).

[0157] Case 3:

[0158] Support for the first and second capabilities requires support for handling cellBarred-NTN-r17 and cellBarred-NTN-5GC, that is:

[0159] A terminal with the first capability needs to support NTN access, and a terminal with the second capability needs to support NTN access, and support the following optimizations:

[0160] - General:

[0161] - Handle cellBarred-NTN-r17 (i.e., the above fourth indication), cellBarred-NTN-5GC (i.e., the above fifth indication), and trackingAreaList-r17 in SystemInformationBlockType1(-NB);

[0162] Other capabilities are the same as those described in the above Method 1 and will not be elaborated here.

[0163] Additionally, the terminal supporting the first capability must support ce-ModeA-r13 or any ue-Category-NB, and the terminal supporting the second capability must support ce-ModeA-r13 or any ue-Category-NB.

[0164] In the embodiments of the present application, an indication related to whether to allow the control plane (CP) reconstruction without security activation can be introduced for a terminal accessing the second core network (such as 5GC) through NTN. The cell access related information may further include a sixth indication, which is used to indicate whether the terminal is allowed to trigger a radio resource control (RRC) connection reconstruction process when the terminal is connected to the second core network (such as 5GC) through NTN and the access stratum (AS) security is not activated. For example, the sixth indication can be represented by 1 bit. Specifically, when the sixth indication is set to true, it means that when the terminal is connected to the second core network (such as 5GC) through NTN and the access stratum (AS) security is not activated, the terminal is allowed to trigger a radio resource control (RRC) connection reconstruction process; when the sixth indication does not exist, it means that when the terminal is connected to the second core network (such as 5GC) through NTN and the access stratum (AS) security is not activated, the terminal is not allowed or prohibited from triggering a radio resource control (RRC) connection reconstruction process.

[0165] For example, if the sixth indication exists and the terminal is connected to 5GC through NTN, the terminal can trigger an RRC connection reconstruction process when the AS security is not activated.

[0166] For example, the sixth indication can be indicated by the parameter SystemInformationBlockType2 or SystemInformationBlockType2-NB.

[0167] Optionally, if the sixth indication is received, then when the terminal is connected to the second core network (such as 5GC) through NTN and a radio link failure (RLF) occurs, the terminal can perform one of the following:

[0168] - If the sixth indication indicates that when the terminal is connected to the second core network (such as 5GC) via NTN and the AS security is not activated, the terminal is allowed to trigger the RRC connection reestablishment process, then the terminal executes the RRC connection reestablishment process; for example, if the sixth indication is included in the parameter SystemInformationBlockType2 or the parameter SystemInformationBlockType2-NB (such as the sixth indication has only one value and the value is true), and the timer T311 is running, then the terminal executes the RRC connection reestablishment process;

[0169] - If the sixth indication indicates that when the terminal is connected to the second core network (such as 5GC) via NTN and the AS security is not activated, the terminal is not allowed to trigger the RRC connection reestablishment process, then the terminal executes the process of leaving the connected state and sets the release cause value to RRC connection failure; for example, if the sixth indication is not included in the parameter SystemInformationBlockType2 or the parameter SystemInformationBlockType2-NB, and T311 is running, then the terminal executes the process of leaving the connected state (RRC_CONNECTED) and sets the release cause value to RRC connection failure.

[0170] Please refer to Figure 3 , Figure 3 is a flowchart of an access control method provided by an embodiment of the present application, which is executed by a network-side device, such as Figure 3 shown, and the method includes the following steps:

[0171] Step 31: The network-side device sends cell access-related information of the NTN cell to the terminal, and the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access.

[0172] In an embodiment of the present application, the first information is used to determine whether the NTN cell is prohibited. Determining whether the NTN cell is prohibited can be understood as: determining whether the terminal can access the NTN cell.

[0173] Optionally, the terminal may be at least one of an eMTC terminal and an NB-IoT terminal. The eMTC terminal and the NB-IoT terminal have the ground network TN capability and can support access to the non-terrestrial network NTN.

[0174] Optionally, the cell access related information may be provided by parameters SystemInformationBlockType1 / SIB1, SystemInformationBlockType1-BR / SIB1-BR, or SystemInformationBlockType1-NB / SIB1-NB, specifically, for example, by the parameter cellAccessRelatedInfo.

[0175] Thus, by means of the solution in the embodiment of the present application, it can be made that the terminal can determine whether the NTN cell is prohibited from accessing before registration, thereby avoiding ineffective attempts, reducing the delay of the terminal accessing the cell, and effectively performing access control for the NTN cell.

[0176] Optionally, the cell access related information further includes at least one of a first indication and a second indication; the first indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network, and the second indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network. The NTN cell supports connecting to at least one of the first core network and the second core network.

[0177] Optionally, when the NTN cell supports connecting to the first core network, the cell access related information includes a first indication, and the first indication is set to prohibited, that is, it indicates that the NTN cell is prohibited from connecting to the first core network.

[0178] Optionally, when the NTN cell supports connecting to the second core network, the cell access related information includes a second indication, and the second indication is set to prohibited, that is, it indicates that the NTN cell is prohibited from connecting to the first core network.

[0179] Optionally, the first core network is different from the second core network. The first core network may be any one of the following: Evolved Packet Core (EPC), 5GC, 6G core network; the second core network may be any one of the following: EPC, 5GC, 6G core network. For example, the first core network is EPC and the second core network is 5GC; or, the first core network is EPC and the second core network is 6GC; and so on.

[0180] For example, the first indication is cellBarred and is set to "barred" to indicate that the NTN cell is prohibited from accessing the EPC; the second indication is cellBarred-5GC and is set to "barred" to indicate that the NTN cell is prohibited from accessing the 5GC. For the NTN cell, the cell access related information always includes the first information for indicating whether the NTN cell is prohibited from accessing the NTN, and cellBarred and cellBarred-5GC therein are set to "barred".

[0181] Optionally, the first information may include any one of the following:

[0182] Ⅰ) A third indication for indicating whether the NTN cell is prohibited from connecting to a first core network (such as the EPC) and a second core network (such as the 5GC) through the NTN.

[0183] Optionally, the third indication may be set to prohibited (such as "barred") or not prohibited (such as "notBarred").

[0184] For example, the existing cellBarred-NTN may be reused to indicate whether the cell is prohibited from connecting to the 5GC through the NTN, that is, the cellBarred-NTN is used to indicate whether the cell is prohibited from connecting to the EPC and the 5GC through the NTN; for example, if the cellBarred-NTN is set to "barred", it means that the corresponding cell is prohibited from connecting to the NTN, including connecting to the EPC through the NTN and connecting to the 5GC through the NTN.

[0185] For another example, in the case where the NTN cell supports connecting to the 5GC, the TN UE may be prohibited from accessing the NTN cell through the 5GC, and cellBarred-5GC is set to "barred".

[0186] Ⅱ) At least one of a fourth indication and a fifth indication, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to a first core network (such as the EPC) through the NTN, and the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to a second core network (such as the 5GC) through the NTN.

[0187] For example, the fourth indication is the existing cellBarred-NTN, which is used to indicate whether the corresponding cell is prohibited from connecting to the EPC via NTN; the fifth indication is a newly introduced field, which is used to indicate whether the corresponding cell is prohibited from connecting to the 5GC via NTN, such as cellBarred-NTN-5GC. When the NTN cell supports connecting to the 5GC, the NTN UE can be prohibited from accessing the NTN cell via the 5GC, and cellBarred-NTN-5GC is set to "barred".

[0188] Optionally, the fourth indication can be set to prohibited (e.g., "barred") or not prohibited (e.g., "notBarred"), and the fifth indication can be set to prohibited (e.g., "barred") or not prohibited (e.g., "notBarred").

[0189] Optionally, when the network corresponding to the NTN cell supports connecting to the first core network (such as the EPC) and the second core network (such as the 5GC) via NTN, the first information includes the fourth indication and the fifth indication;

[0190] Alternatively, when the network corresponding to the NTN cell supports connecting to the first core network (such as the EPC) via NTN, such as when the network corresponding to the NTN cell only supports connecting to the first core network (such as the EPC) via NTN, the first information includes the fourth indication;

[0191] Alternatively, when the network corresponding to the NTN cell supports connecting to the second core network (such as the 5GC) via NTN, such as when the network corresponding to the NTN cell only supports connecting to the second core network (such as the 5GC) via NTN, the first information includes the fifth indication.

[0192] In the access control method provided by the embodiments of the present application, the execution subject can be an access control device. In the embodiments of the present application, taking the access control device executing the access control method as an example, the access control device provided by the embodiments of the present application is described.

[0193] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of an access control device provided by the embodiments of the present application. The device is applied to a terminal, such as Figure 4 shown, the access control device 40 includes:

[0194] An acquisition module 41, configured to acquire cell access related information of the NTN cell, where the cell access related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access;

[0195] A determination module 42, configured to determine whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

[0196] Optionally, the terminal is at least one of an eMTC terminal and an NB-IoT terminal.

[0197] Optionally, the cell access related information further includes at least one of a first indication and a second indication; wherein, the first indication is used to indicate whether the cell is prohibited from connecting to a first core network, and the second indication is used to indicate whether the cell is prohibited from connecting to a second core network.

[0198] Optionally, when the NTN cell supports connecting to a first core network, the cell access related information includes the first indication, and the first indication is set to prohibited;

[0199] When the NTN cell supports connecting to a second core network, the cell access related information includes the second indication, and the second indication is set to prohibited.

[0200] Optionally, the first core network is different from the second core network, and the first core network is any one of the following: evolved packet core network EPC, 5G core network 5GC, 6G core network; the second core network is any one of the following: EPC, 5GC, 6G core network.

[0201] Optionally, the determination module 42 is specifically configured to: perform a first action according to the first information and the capabilities of the terminal; the first action includes at least one of the following:

[0202] Ignore the first indication;

[0203] Ignore the second indication;

[0204] Determine that the NTN cell is prohibited from connecting to the first core network through NTN;

[0205] Determine that the NTN cell is allowed or not prohibited from connecting to the first core network through NTN;

[0206] Determine that the NTN cell is prohibited from connecting to the second core network through NTN;

[0207] Determine that the NTN cell is allowed or not prohibited from connecting to the second core network through NTN.

[0208] Optionally, the determination module 42 is specifically configured to:

[0209] When the first information includes a third indication and the terminal supports NTN access, the terminal ignores at least one of the first indication and the second indication; wherein, the third indication is used to indicate whether the NTN cell is prohibited from connecting the first core network and the second core network through NTN.

[0210] Optionally, the determination module 42 is specifically configured to perform at least one of the following:

[0211] When the first information includes the third indication and the terminal has a first capability, the terminal ignores the first indication;

[0212] When the first information includes the third indication and the terminal has a first capability, the terminal ignores the second indication;

[0213] When the first information includes the third indication and the terminal has a first capability, the terminal ignores the first indication and the second indication;

[0214] When the first information includes the third indication and the terminal has a second capability, the terminal ignores the first indication;

[0215] When the first information includes the third indication and the terminal has a second capability, the terminal ignores the second indication;

[0216] When the first information includes the third indication and the terminal has a second capability, the terminal ignores the first indication and the second indication;

[0217] Wherein, the first capability is used to indicate that the terminal supports connecting to the first core network through NTN; the second capability is used to indicate that the terminal supports connecting to the second core network through NTN.

[0218] Optionally, the determination module 42 is specifically configured to:

[0219] When the first information includes at least one of a fourth indication and a fifth indication and the terminal supports NTN access, the terminal ignores at least one of the first indication and the second indication;

[0220] Wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network through NTN; the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network through NTN.

[0221] Optionally, the determination module 42 is specifically configured to perform at least one of the following:

[0222] When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the first indication;

[0223] When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the second indication;

[0224] When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the first indication and the second indication;

[0225] When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the first indication;

[0226] When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the second indication;

[0227] When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the first indication and the second indication;

[0228] When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the first indication;

[0229] When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the second indication;

[0230] When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the first indication and the second indication;

[0231] Wherein, the first capability is used to indicate that the terminal supports connecting to the first core network through NTN; the second capability is used to indicate that the terminal supports connecting to the second core network through NTN.

[0232] Optionally, the determination module 42 is specifically configured to perform at least one of the following:

[0233] When the terminal supports NTN access, the first information includes a third indication, and the third indication is set to prohibited, it is determined that the NTN cell is prohibited from accessing the first core network and the second core network through NTN;

[0234] When the terminal supports NTN access, and the first information includes a third indication and the third indication is set to not prohibited, determine that the NTN cell is allowed or not prohibited from accessing the first core network and the second core network through NTN;

[0235] Wherein, the third indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network and the second core network through NTN.

[0236] Optionally, the determination module 42 is specifically configured to perform at least one of the following:

[0237] When the terminal supports NTN access, the first information includes a fourth indication and the fourth indication is set to prohibited, determine that the NTN cell is prohibited from accessing the first core network through NTN;

[0238] When the terminal supports NTN access, the first information includes a fourth indication and the fourth indication is set to not prohibited, determine that the NTN cell is allowed or not prohibited from accessing the first core network through NTN;

[0239] When the terminal supports NTN access, the first information includes a fifth indication and the fifth indication is set to prohibited, determine that the NTN cell is prohibited from accessing the second core network through NTN;

[0240] When the terminal supports NTN access, the first information includes a fifth indication and the fifth indication is set to not prohibited, determine that the NTN cell is allowed or not prohibited from accessing the second core network through NTN;

[0241] Wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network through NTN; the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network through NTN.

[0242] Optionally, the access control device 40 includes:

[0243] A processing module, configured to perform at least one of the following:

[0244] When the first information includes the fourth indication and the terminal does not have the first capability, ignore the fourth indication; the first capability is used to indicate that the terminal supports connecting to the first core network through NTN;

[0245] When the first information includes the fifth indication and the terminal does not have the second capability, ignore the fifth indication; the second capability is used to indicate that the terminal supports connecting to the second core network through NTN.

[0246] Optionally, the access control device 40 includes:

[0247] A determination module, configured to determine the network type of the NTN cell according to whether the first information includes a fourth indication and a fifth indication; wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to a first core network through NTN; and the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to a second core network through NTN.

[0248] Optionally, the determination module is specifically configured to perform at least one of the following:

[0249] When the first information does not include the fourth indication and the fifth indication, determine that the network type of the NTN cell is a terrestrial network TN;

[0250] When the first information includes at least one of the fourth indication and the fifth indication, determine that the network type of the NTN cell is a non-terrestrial network NTN.

[0251] Optionally, the cell access related information further includes a sixth indication, and the sixth indication is used to indicate whether the terminal is allowed to trigger a radio resource control (RRC) connection reestablishment process when the terminal connects to a second core network through NTN and the access stratum (AS) security is not activated.

[0252] Optionally, the access control device 40 includes:

[0253] An execution module, configured to perform one of the following when the terminal connects to a second core network through NTN and a radio link failure (RLF) occurs:

[0254] When the sixth indication indicates that the terminal is allowed to trigger an RRC connection reestablishment process when the terminal connects to a second core network through NTN and the AS security is not activated, perform the RRC connection reestablishment process;

[0255] When the sixth indication indicates that the terminal is not allowed to trigger an RRC connection reestablishment process when the terminal connects to a second core network through NTN and the AS security is not activated, perform a process of leaving the connected state and set the release cause value to RRC connection failure.

[0256] The access control device 40 in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0257] The access control device 40 provided by the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0258] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of an access control device provided by the embodiments of the present application. This device is applied to network-side devices, such as Figure 5 shown. The access control device 50 includes:

[0259] A sending module 51, configured to send cell access-related information of the NTN cell to the terminal. Among them, the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access, and the first information is used to determine whether the NTN cell is prohibited.

[0260] Optionally, the cell access-related information further includes at least one of a first indication and a second indication; the first indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network, and the second indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network.

[0261] When the NTN cell supports connecting to the first core network, the cell access-related information includes a first indication, and the first indication is set to prohibited;

[0262] When the NTN cell supports connecting to the second core network, the cell access-related information includes a second indication, and the second indication is set to prohibited.

[0263] The first core network is different from the second core network. The first core network is any one of the following: EPC, 5GC, 6G core network; the second core network is any one of the following: EPC, 5GC, 6G core network.

[0264] Optionally, the first information includes any one of the following:

[0265] A third indication, used to indicate whether the NTN cell is prohibited from connecting to the first core network and the second core network through NTN;

[0266] At least one of a fourth indication and a fifth indication. The fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network through NTN, and the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network through NTN.

[0267] Optionally, when the network corresponding to the NTN cell supports connecting a first core network and a second core network through NTN, the first information includes the fourth indication and the fifth indication;

[0268] Alternatively, when the network corresponding to the NTN cell supports connecting a first core network through NTN, the first information includes the fourth indication;

[0269] Alternatively, when the network corresponding to the NTN cell supports connecting a second core network through NTN, the first information includes the fifth indication.

[0270] The access control device 50 provided in the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described here again.

[0271] As Figure 6 shown, the embodiments of the present application further provide a communication device 60, including a processor 61 and a memory 62. A program or instruction that can run on the processor 61 is stored on the memory 62. For example, when the communication device 60 is a terminal, when the program or instruction is executed by the processor 61, it implements each step of the above access control method embodiment and can achieve the same technical effects. When the communication device 60 is a network-side device, when the program or instruction is executed by the processor 61, it implements each step of the above access control method embodiment and can achieve the same technical effects. To avoid repetition, details are not described here again.

[0272] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment as Figure 2 shown. This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effects.

[0273] Specifically, Figure 7 is a schematic diagram of the hardware structure of a terminal for implementing the embodiments of the present application.

[0274] The terminal 700 includes, but is not limited to, at least some components such as a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

[0275] Those skilled in the art can understand that the terminal 700 may further include a power source (such as a battery) for powering each component. The power source can be logically connected to the processor 710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in Figure 7 does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0276] It should be understood that in the embodiments of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The graphics processor 7041 processes the image data of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. The other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0277] In the embodiments of the present application, after the radio frequency unit 701 receives downlink data from a network side device, it can be transmitted to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0278] The memory 709 can be used to store software programs or instructions as well as various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area can store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 can include volatile memory or non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 709 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0279] The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 710 either.

[0280] Among them, the processor 710 is used to obtain cell access-related information of the NTN cell, and the cell access-related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access; according to the first information and the capabilities of the terminal, determine whether the NTN cell is prohibited.

[0281] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the above method embodiments, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated herein.

[0282] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the steps of the method embodiment as Figure 3 shown. This embodiment of the network-side device corresponds to the above method embodiment of the network-side device. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the network-side device, and the same technical effects can be achieved.

[0283] Specifically, the embodiment of the present application further provides a network-side device. As Figure 8 shown, the network-side device 80 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. After processing the received information, the radio frequency device 82 sends it out through the antenna 81.

[0284] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83. The baseband device 83 includes a baseband processor.

[0285] The baseband device 83 may include, for example, at least one baseband board. Multiple chips are arranged on the baseband board. As Figure 8 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the programs in the memory 85 and execute the operations of the network device shown in the above method embodiments.

[0286] The network-side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0287] Specifically, the network-side device 80 of the embodiment of the present application further includes: instructions or programs stored on the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules shown in Figure 5 and achieve the same technical effects. To avoid repetition, they will not be elaborated herein.

[0288] The embodiments of the present application further provide a readable storage medium, on which a program or instructions are stored. When the program or instructions are executed by a processor, the various processes of the above-mentioned access control method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0289] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0290] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the various processes of the above-mentioned access control method embodiments, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0291] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system or system-on-chip.

[0292] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned access control method embodiments, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0293] The embodiments of the present application further provide a communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the access control method as described above Figure 2 The network-side device can be used to execute the steps of the access control method as described above Figure 3 The steps of the access control method as described above.

[0294] It should be noted that in this document, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0295] It should be noted that between the various embodiments and the various alternative embodiments of the present application, there is no exclusive parallel relationship. The various embodiments and the various alternative embodiments of the present application may be partially or fully combined with each other, or partially or fully replaced. For example, different embodiments may be combined together to form another embodiment, and different alternative embodiments may also be combined together to form another embodiment.

[0296] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus the necessary general hardware platforms, and of course, they can also be implemented by hardware. The computer software products are stored in storage media (such as ROM, RAM, magnetic disks, optical disks, etc.) and include several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0297] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the spirit and scope protected by the claims of the present application. These embodiments are all within the protection scope of the present application.

Claims

1. An access control method, characterized in that, it includes: The terminal obtains cell access related information of a non-terrestrial network (NTN) cell, where the cell access related information includes first information, and the first information is used to indicate whether NTN access is prohibited for the NTN cell; The terminal determines whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

2. The method according to claim 1, characterized in that, The cell access related information further includes at least one of a first indication and a second indication; wherein, the first indication is used to indicate whether the cell is prohibited from connecting to a first core network, and the second indication is used to indicate whether the cell is prohibited from connecting to a second core network.

3. The method according to claim 2, characterized in that, When the NTN cell supports connecting to a first core network, the cell access related information includes the first indication, and the first indication is set to prohibited; When the NTN cell supports connecting to a second core network, the cell access related information includes the second indication, and the second indication is set to prohibited.

4. The method according to claim 2 or 3, characterized in that, The first core network is different from the second core network. The first core network is any one of the following: evolved packet core network (EPC), 5G core network (5GC), 6G core network; the second core network is any one of the following: EPC, 5GC, 6G core network.

5. The method according to any one of claims 2 to 4, characterized in that, The terminal determines whether the NTN cell is prohibited according to the first information and the capabilities of the terminal, including: The terminal performs a first action according to the first information and the capabilities of the terminal; wherein, the first action includes at least one of the following: Ignoring the first indication; Ignoring the second indication; Determining that the NTN cell is prohibited from connecting to the first core network through NTN; Determining that the NTN cell is allowed or not prohibited from connecting to the first core network through NTN; Determining that the NTN cell is prohibited from connecting to the second core network through NTN; Determining that the NTN cell is allowed or not prohibited from connecting to the second core network through NTN.

6. The method according to claim 5, characterized in that, The terminal performs the first action according to the first information and the capabilities of the terminal, including: When the first information includes a third indication and the terminal supports NTN access, the terminal ignores at least one of the first indication and the second indication; wherein, the third indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network and the second core network through NTN.

7. The method according to claim 5 or 6, characterized in that, When the first information includes a third indication and the terminal supports NTN access, the terminal ignores at least one of the first indications, including at least one of the following: When the first information includes the third indication and the terminal has a first capability, the terminal ignores the first indication; When the first information includes the third indication and the terminal has the first capability, the terminal ignores the second indication; When the first information includes the third indication and the terminal has the first capability, the terminal ignores the first indication and the second indication; When the first information includes the third indication and the terminal has the second capability, the terminal ignores the first indication; When the first information includes the third indication and the terminal has the second capability, the terminal ignores the second indication; When the first information includes the third indication and the terminal has the second capability, the terminal ignores the first indication and the second indication; Wherein, the first capability is used to indicate that the terminal supports connecting to the first core network through NTN; the second capability is used to indicate that the terminal supports connecting to the second core network through NTN.

8. The method according to claim 5, wherein, the terminal performs a first behavior according to the first information and the capability of the terminal, including: When the first information includes at least one of a fourth indication and a fifth indication and the terminal supports NTN access, the terminal ignores at least one of the first indication and the second indication; Wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network through NTN; the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network through NTN.

9. The method according to claim 7 or 8, wherein, when the first information includes at least one of a fourth indication and a fifth indication and the terminal supports NTN access, the terminal ignores at least one of the first indication and the second indication, including at least one of the following: When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the first indication; When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the second indication; When the first information only includes the fourth indication and the terminal has the first capability, the terminal ignores the first indication and the second indication; When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the first indication; When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the second indication; When the first information only includes the fifth indication and the terminal has the second capability, the terminal ignores the first indication and the second indication; When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the first indication; When the first information includes the fourth indication and the fifth indication and the terminal has the first capability or the second capability, the terminal ignores the second indication; When the first information includes the fourth indication and the fifth indication, and the terminal has the first capability or the second capability, the terminal ignores the first indication and the second indication; Wherein, the first capability is used to indicate that the terminal supports connecting to a first core network via NTN; the second capability is used to indicate that the terminal supports connecting to a second core network via NTN.

10. The method according to claim 5, wherein, the terminal performs a first action according to the first information and the capabilities of the terminal, including at least one of the following: When the terminal supports NTN access, the first information includes a third indication, and the third indication is set to prohibited, the terminal determines that the NTN cell is prohibited from accessing the first core network and the second core network via NTN; When the terminal supports NTN access, the first information includes a third indication, and the third indication is set to not prohibited, the terminal determines that the NTN cell is allowed or not prohibited from accessing the first core network and the second core network via NTN; Wherein, the third indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network and the second core network via NTN.

11. The method according to claim 5, wherein, the terminal performs a first action according to the first information and the capabilities of the terminal, including at least one of the following: When the terminal supports NTN access, the first information includes a fourth indication, and the fourth indication is set to prohibited, the terminal determines that the NTN cell is prohibited from accessing the first core network via NTN; When the terminal supports NTN access, the first information includes a fourth indication, and the fourth indication is set to not prohibited, the terminal determines that the NTN cell is allowed or not prohibited from accessing the first core network via NTN; When the terminal supports NTN access, the first information includes a fifth indication, and the fifth indication is set to prohibited, the terminal determines that the NTN cell is prohibited from accessing the second core network via NTN; When the terminal supports NTN access, the first information includes a fifth indication, and the fifth indication is set to not prohibited, the terminal determines that the NTN cell is allowed or not prohibited from accessing the second core network via NTN; Wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network via NTN; The fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network via NTN.

12. The method according to claim 8, 9 or 11, wherein, the method further includes at least one of the following: When the first information includes the fourth indication and the terminal does not have the first capability, the terminal ignores the fourth indication; wherein, the first capability is used to indicate that the terminal supports connecting to a first core network via NTN; When the first information includes the fifth indication and the terminal does not have the second capability, the terminal ignores the fifth indication; wherein, the second capability is used to indicate that the terminal supports connecting to a second core network via NTN.

13. The method according to any one of claims 1 to 12, wherein, the method further includes: The terminal determines the network type of the NTN cell according to whether the first information includes a fourth indication and a fifth indication; wherein, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to a first core network via NTN; the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to a second core network via NTN.

14. The method according to claim 13, wherein, The terminal determines the network type of the NTN cell according to whether the first information includes a fourth indication and a fifth indication, including at least one of the following: When the first information does not include the fourth indication and the fifth indication, the terminal determines that the network type of the NTN cell is a terrestrial network; When the first information includes at least one of the fourth indication and the fifth indication, the terminal determines that the network type of the NTN cell is a non-terrestrial network.

15. The method according to any one of claims 1 to 14, wherein, The cell access related information further includes a sixth indication, and the sixth indication is used to indicate whether the terminal is allowed to trigger a radio resource control (RRC) connection reestablishment process when the terminal connects to a second core network via NTN and the access stratum (AS) security is not activated.

16. The method according to claim 15, wherein, the method further includes: When the terminal connects to a second core network via NTN and a radio link failure (RLF) occurs, the terminal performs one of the following: If the sixth indication indicates that the terminal is allowed to trigger an RRC connection reestablishment process when the terminal connects to a second core network via NTN and the AS security is not activated, the terminal performs the RRC connection reestablishment process; If the sixth indication indicates that the terminal is not allowed to trigger an RRC connection reestablishment process when the terminal connects to a second core network via NTN and the AS security is not activated, the terminal performs a process of leaving the connected state and sets the release cause value to RRC connection failure.

17. The method according to any one of claims 1 to 16, wherein, The terminal is at least one of an eMTC terminal and an NB-IoT terminal.

18. An access control method, wherein, includes: A network side device sends cell access related information of an NTN cell to a terminal, wherein the cell access related information includes first information, and the first information is used to indicate whether the NTN cell is prohibited from NTN access, and the first information is used to determine whether the NTN cell is prohibited.

19. The method according to claim 18, wherein, The cell access related information further includes at least one of a first indication and a second indication; Wherein, the first indication is used to indicate whether the cell is prohibited from connecting to the first core network, and the second indication is used to indicate whether the cell is prohibited from connecting to the second core network.

20. The method according to claim 19, wherein, when the NTN cell supports connecting to the first core network, the cell access related information includes the first indication, and the first indication is set to prohibited; when the NTN cell supports connecting to the second core network, the cell access related information includes the second indication, and the second indication is set to prohibited.

21. The method according to claim 19 or 20, wherein, the first core network is different from the second core network, and the first core network is any one of the following: EPC, 5GC, 6G core network; the second core network is any one of the following: EPC, 5GC, 6G core network.

22. The method according to any one of claims 18 to 21, wherein, the first information includes at least one of the following: a third indication for indicating whether the NTN cell is prohibited from connecting to the first core network and the second core network through NTN; at least one of a fourth indication and a fifth indication, the fourth indication is used to indicate whether the NTN cell is prohibited from connecting to the first core network through NTN, and the fifth indication is used to indicate whether the NTN cell is prohibited from connecting to the second core network through NTN.

23. The method according to claim 22, wherein, when the network corresponding to the NTN cell supports connecting to the first core network and the second core network through NTN, the first information includes the fourth indication and the fifth indication; alternatively, when the network corresponding to the NTN cell supports connecting to the first core network through NTN, the first information includes the fourth indication; alternatively, when the network corresponding to the NTN cell supports connecting to the second core network through NTN, the first information includes the fifth indication.

24. An access control device, wherein, comprises: an acquisition module for acquiring cell access related information of an NTN cell, wherein the cell access related information includes first information for indicating whether the NTN cell is prohibited from NTN access; a determination module for determining whether the NTN cell is prohibited according to the first information and the capabilities of the terminal.

25. An access control device, wherein, comprises: a sending module for sending cell access related information of an NTN cell to a terminal, wherein the cell access related information includes first information for indicating whether the NTN cell is prohibited from NTN access, and the first information is used to determine whether the NTN cell is prohibited.

26. A terminal, wherein, comprises a processor and a memory, and the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the access control method according to any one of claims 1 to 17 are implemented.

27. A network side device, wherein, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the steps of the access control method described in any one of claims 18 to 23 are implemented.

28. A readable storage medium, characterized in that programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the access control method described in any one of claims 1 to 17 are implemented, or the steps of the access control method described in any one of claims 18 to 23 are implemented.

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