Access control method, communication apparatus, communication system, communication device, storage medium, and program product

Abstract

The embodiment of the invention provides an access control method, a communication device, a communication system, communication equipment, a storage medium and a program product, and relates to the technical field of wireless communication and the like, terminal equipment supports non-terrestrial network NTN access, and the terminal equipment acquires first indication information and second indication information of a cell, the first indication information is used for indicating that the cell allows NTN connection or forbids NTN connection, and the second indication information is used for indicating downlink coverage enhancement information of the cell; and determining a cell state of the cell according to the first indication information or the second indication information, the cell state including a prohibited state or a non-prohibited state, and the cell state being used for the terminal device to determine whether the terminal device is allowed to access the cell. The access control method, the communication device, the communication system, the communication equipment, the storage medium and the program product provided by the embodiment of the invention are used for reducing the access time delay of the terminal equipment and improving the user experience.

Description

Technical Field

[0001] This application relates to the technical fields of wireless communication, and in particular to an access control method, communication device, communication system, communication equipment, storage medium, and program product. Background Technology

[0002] To meet the downlink coverage enhancement requirements of New Radio Non-Terrestrial Networks (NR NTN), network equipment can use beam hopping (BH) to communicate with terminal equipment.

[0003] When network devices communicate with terminal devices using beam hopping, the following scenario may occur: When a terminal device camps on a cell that supports or has implemented downlink coverage enhancement, the network device may reject the normal communication request initiated by the terminal device after the terminal device initiates a normal communication request to the network device corresponding to the cell, since the terminal device does not support downlink coverage enhancement. This results in increased access latency for the terminal device and a poor user experience. Summary of the Invention

[0004] This application provides an access control method, communication device, communication system, communication equipment, storage medium, and program product to reduce access latency of terminal devices and improve user experience.

[0005] In a first aspect, embodiments of this application provide an access control method applied to a terminal device that supports non-terrestrial network (NTN) access. The method includes:

[0006] Obtain first indication information and second indication information of the cell. The first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate the downlink coverage enhancement information of the cell.

[0007] The cell status of the cell is determined based on the first indication information or the second indication information. The cell status includes a prohibited state or a non-prohibited state. The cell status is used by the terminal device to determine whether it is allowed to access the cell.

[0008] In the above technical solution, by determining the cell status, the terminal device can obtain normal services in the cell when the cell status is determined to be non-prohibited. This avoids the network device rejecting the terminal device's service request, which helps to shorten the latency of the terminal device accessing the network device, improve the user experience of the terminal device, and reduce the terminal device's repeated access operations, thus reducing the resource consumption of the terminal device.

[0009] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[0010] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0011] In the above technical solution, the terminal device can quickly determine whether the cell supports downlink coverage enhancement or whether the cell has implemented downlink coverage enhancement based on the second indication information.

[0012] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[0013] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0014] In the above technical solution, the terminal device can quickly determine whether the cell supports downlink coverage enhancement or whether the cell has performed downlink coverage enhancement based on the second indication information.

[0015] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[0016] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0017] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0018] In the above technical solution, the terminal device can accurately and quickly determine whether the cell supports downlink coverage enhancement or whether the cell has performed downlink coverage enhancement based on the different preset values ​​of the second indication information.

[0019] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[0020] In the above technical solution, after receiving the second instruction information, the terminal device directly determines that the first instruction information indicates that the cell prohibits NTN connection, without having to repeatedly judge the content of the first instruction information.

[0021] In some embodiments, if the first indication information exists, the second indication information exists; and / or,

[0022] If the second indication information is present, the first indication information is used to instruct the cell to disable NTN connections.

[0023] In the above technical solution, when the existence of the second indication information is determined, the terminal device can directly determine that the first indication information indicates that the cell prohibits NTN connection, without having to repeatedly judge the content of the first indication information.

[0024] In some embodiments, obtaining the second indication information includes:

[0025] Receive the second instruction information sent by the network device.

[0026] In the above technical solution, the terminal device can receive the second indication information sent by the network device, so as to accurately and quickly determine whether the cell supports downlink coverage enhancement or whether the cell has performed downlink coverage enhancement based on the second indication information.

[0027] In some embodiments, the second indication information is carried through system information;

[0028] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0029] In the above technical solution, the second indication information can be common to multiple preset networks, so that each preset network does not need to obtain the second indication information separately.

[0030] In some embodiments, obtaining the second indication information includes:

[0031] Receive system information sent by a network device, wherein the system information includes the second indication information.

[0032] In the above technical solution, the second instruction information can be carried in the system information so that the terminal device can obtain it.

[0033] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[0034] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0035] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0036] In the above technical solution, the second indication information can be common to multiple preset networks, so that each preset network does not need to obtain the second indication information separately.

[0037] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0038] In some embodiments, the system information is System Information Block 1SIB1.

[0039] In the above technical solution, the system information can be SIB1, so that the terminal device can obtain it.

[0040] In some embodiments, determining the cell status of the cell based on the first indication information or the second indication information includes:

[0041] The cell status of the cell is determined based on the device type of the terminal device and the first indication information; or,

[0042] The cell status of the cell is determined based on the device type of the terminal device and the second indication information.

[0043] In the above technical solution, the terminal device can select either the first indication information or the second indication information according to the device type to accurately determine the cell status.

[0044] In some embodiments, the device type includes at least one of the following:

[0045] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[0046] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0047] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[0048] In the above technical solutions, terminal devices of the first device type, the second device type, and the third device type all support NTN access.

[0049] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information;

[0050] Determining the cell status of the cell based on the first indication information or the second indication information includes:

[0051] The cell status of the cell is determined based on the first indication information.

[0052] In the above technical solution, if the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device can ignore the second indication information and quickly and accurately determine the cell status based on the first indication information.

[0053] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information;

[0054] Determining the cell status of the cell based on the first indication information or the second indication information includes:

[0055] The cell status of the cell is determined based on the second indication information.

[0056] In the above technical solution, if the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device can ignore the first indication information and quickly and accurately determine the cell status based on the second indication information.

[0057] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0058] If the first preset condition and the second preset condition are met, the cell is determined to be a suitable cell; and / or,

[0059] If the first preset condition and / or the second preset condition are not met, the cell is determined to be an unsuitable cell.

[0060] In the above technical solution, the cell can be determined to be a suitable cell based on the first preset condition and the second preset condition, so that the terminal device can choose whether to access or stay in the cell.

[0061] In some embodiments, the first preset condition includes any one of the following:

[0062] The terminal device receives the second indication information and the terminal device supports downlink coverage enhancement;

[0063] The terminal device receives the second indication information, and the second indication information indicates that the cell supports downlink coverage enhancement, and the terminal device supports downlink coverage enhancement;

[0064] The terminal device receives the second indication information, and the second indication information indicates that the cell has performed downlink coverage enhancement, and that the terminal device supports downlink coverage enhancement;

[0065] The cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0066] The cell has implemented downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0067] In the above technical solution, the first preset condition can be applied to terminal devices of the first device type and the second device type, so that the terminal devices of the first device type and the second device type can quickly determine whether the cell is a suitable cell based on the first preset condition.

[0068] In some embodiments, the first preset condition includes any one of the following:

[0069] The second indication information does not exist, or the second indication information exists and the terminal device supports downlink coverage enhancement;

[0070] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0071] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell has performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0072] The cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0073] The cell did not perform downlink coverage enhancement, or the cell performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0074] In the above technical solution, the terminal device can determine whether the cell is a suitable cell based on the first preset condition, so that the terminal device can determine whether to access or stay in the cell.

[0075] In some embodiments, the second preset condition includes:

[0076] The preset network includes at least one network broadcast by the cell, and the preset network is at least one of the following: the network selected by the terminal device, the network registered by the terminal device, a network equivalent to the network selected by the terminal device, and a network equivalent to the network registered by the terminal device;

[0077] Meets the community selection criteria;

[0078] The cell status is non-prohibited;

[0079] At least one tracking area (TA) broadcast by the cell meets the following conditions: the roaming no-tracking area list does not include the TA, and the preset network includes the network to which the TA belongs.

[0080] In the above technical solution, the terminal device can determine whether the cell is a suitable cell based on the second preset condition, so that the terminal device can determine whether to access or stay in the cell.

[0081] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0082] The cell is determined to be an acceptable cell if at least one of the following conditions is met:

[0083] The terminal device receives the second indication information;

[0084] The second indication information indicates that the cell supports downlink coverage enhancement;

[0085] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0086] The cell supports enhanced downlink coverage;

[0087] The cell implemented downlink coverage enhancement.

[0088] In the above technical solution, if at least one of the conditions in the above technical solution is met, the terminal device can determine that the cell is an acceptable cell, so as to ensure that the terminal device of the second device type can camp in the cell to obtain limited services, avoid the network device rejecting the service request of the terminal device, which is conducive to shortening the latency of the terminal device accessing the network device, improving the user experience of the terminal device, and reducing the terminal device's repeated access operations, which is conducive to reducing the resource consumption of the terminal device.

[0089] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information;

[0090] Determining the cell status of the cell based on the first indication information or the second indication information includes:

[0091] If the third preset condition is met, the cell status of the cell is determined according to the first indication information;

[0092] If the fourth preset condition is met, the cell status of the cell is determined according to the second indication information.

[0093] In the above technical solution, if the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, and if the third preset condition is met, the terminal device can ignore the second indication information and quickly and accurately determine the cell status based on the first indication information; if the fourth preset condition is met, the terminal device can ignore the first indication information and quickly and accurately determine the cell status based on the first indication information.

[0094] In some embodiments, the third preset condition includes at least one of the following:

[0095] The terminal device detected the cell for the first time;

[0096] The terminal device determines the cell status of the cell for the first time;

[0097] The number of times the terminal device continuously detects the cell is less than or equal to a first threshold.

[0098] Within a first preset time period, the number of times the terminal device continuously detects the cell is less than or equal to a second threshold.

[0099] The number of times the terminal device continuously determines the cell status of the cell is less than or equal to a third threshold.

[0100] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is less than or equal to a fourth threshold.

[0101] The time interval between the current moment and the first moment is less than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[0102] The time interval between the current moment and the second moment is less than or equal to the second time threshold, where the second moment is the moment when the terminal device first determines the cell status of the cell;

[0103] The duration of the terminal device in the arbitrary cell selection state is less than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0104] The network device instructs the terminal device to determine the cell status based on the first indication information.

[0105] In the above technical solution, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device determines whether to use the first indication information or the second indication information according to the third preset condition to determine the cell status, so that the terminal device can quickly determine the cell status.

[0106] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0107] If the cell is determined to be in the prohibited state and at least one of the following conditions is met, the cell is determined to be an acceptable cell:

[0108] The first indication message indicates that the cell prohibits NTN connections;

[0109] The terminal device receives the second indication information;

[0110] The second indication information indicates that the cell supports downlink coverage enhancement;

[0111] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0112] The cell supports enhanced downlink coverage;

[0113] The cell implemented downlink coverage enhancement;

[0114] The cell selection criteria for the cell are met;

[0115] The cell allows the terminal device to perform emergency bearer services if the terminal device determines that the cell status is prohibited.

[0116] The cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0117] In the above technical solution, when the cell status is determined to be prohibited and at least one of the conditions in the above technical solution is met, the terminal device can determine that the cell is an acceptable cell, so as to ensure that the second type of terminal device can camp in the cell to obtain restricted services, avoid the network device rejecting the terminal device's service request, which is conducive to shortening the latency of the terminal device accessing the network device, improving the user experience of the terminal device, and reducing the terminal device's repeated access operations, which is conducive to reducing the resource consumption of the terminal device.

[0118] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0119] If the cell is determined to be in the prohibited state and at least one of the following conditions is met, the cell is determined to be an acceptable cell:

[0120] The first indication message indicates that the cell prohibits NTN connections;

[0121] The second indication information exists;

[0122] The second indication information indicates that the cell supports downlink coverage enhancement;

[0123] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0124] The cell supports enhanced downlink coverage;

[0125] The cell implemented downlink coverage enhancement;

[0126] The cell selection criteria for the cell are met;

[0127] The cell allows the terminal device to perform emergency bearer services if the terminal device determines that the cell status is prohibited.

[0128] The cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0129] In the above technical solution, when the cell status is determined to be prohibited and at least one of the conditions in the above technical solution is met, the terminal device can determine that the cell is an acceptable cell, so as to ensure that the second type of terminal device can camp in the cell to obtain restricted services, avoid the network device rejecting the terminal device's service request, which is conducive to shortening the latency of the terminal device accessing the network device, improving the user experience of the terminal device, and reducing the terminal device's repeated access operations, which is conducive to reducing the resource consumption of the terminal device.

[0130] In some embodiments, the fourth preset condition includes at least one of the following:

[0131] This is not the first time the terminal device has detected the cell;

[0132] The terminal device is not determining the cell status of the cell for the first time;

[0133] The number of times the terminal device continuously detects the cell is greater than or equal to a first threshold.

[0134] Within a first preset time period, the number of times the terminal device continuously detects the cell is greater than or equal to a second threshold.

[0135] The number of times the terminal device continuously determines the cell status of the cell is greater than or equal to a third threshold.

[0136] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is greater than or equal to a fourth threshold.

[0137] The time interval between the current moment and the first moment is greater than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[0138] The time interval between the current time and the second time is greater than or equal to the second time threshold, where the second time is the moment when the terminal device first determines the cell status of the cell;

[0139] The duration of the terminal device in the arbitrary cell selection state is greater than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0140] The network device instructs the terminal device to determine the cell status based on the second instruction information.

[0141] In the above technical solution, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device determines whether to use the first indication information or the second indication information according to the fourth preset condition, so that the terminal device can quickly determine the cell status of the cell.

[0142] In some embodiments, when the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information;

[0143] Determining the cell status of the cell based on the first indication information or the second indication information includes:

[0144] The cell status of the cell is determined based on the first indication information.

[0145] In the above technical solution, if the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information, the terminal device can ignore the second indication information and quickly and accurately determine the cell status based on the first indication information.

[0146] In some embodiments, when the terminal device supports downlink coverage enhancement; determining the cell status of the cell based on the first indication information or the second indication information includes:

[0147] The cell status of the cell is determined based on the second indication information.

[0148] In the above technical solution, when the terminal device supports downlink coverage enhancement, the terminal device can ignore the first indication information and quickly and accurately determine the cell status based on the second indication information.

[0149] In some embodiments, the method further includes:

[0150] Determine whether the cell supports downlink coverage enhancement; or,

[0151] Determine whether the cell has implemented downlink coverage enhancement.

[0152] In the above technical solution, by determining whether the cell indicates downlink coverage enhancement, or whether the cell has implemented downlink coverage enhancement, the terminal device can choose whether it can access the cell based on its own device type.

[0153] In some embodiments, the method further includes:

[0154] Determine whether the cell supports downlink coverage enhancement or not; or,

[0155] It is determined whether the cell has implemented downlink coverage enhancement or not.

[0156] In the above technical solution, by determining whether the cell indicates downlink coverage enhancement, or whether the cell has implemented downlink coverage enhancement, the terminal device can choose whether it can access the cell based on its own device type.

[0157] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following:

[0158] Supports beam skipping mechanism;

[0159] Supports discontinuous reception DRX mechanism on the network side;

[0160] DRX configuration is provided;

[0161] Supports discontinuous DTX transmission mechanism on the network side;

[0162] DTX configuration is provided;

[0163] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[0164] It provides configuration information for SSB cycle extension;

[0165] or,

[0166] The cell has implemented downlink coverage enhancement, including at least one of the following:

[0167] A beam-hopping mechanism was implemented.

[0168] The discontinuous reception DRX mechanism on the network side was implemented;

[0169] DRX configuration is provided;

[0170] The network-side discontinuous transmission DTX mechanism was executed;

[0171] DTX configuration is provided;

[0172] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[0173] Configuration information for SSB cycle extension is provided.

[0174] In the above technical solution, the determination conditions for a cell to support downlink coverage enhancement can be provided, so that the terminal device can quickly determine whether the cell supports downlink coverage enhancement based on the determination conditions for the cell to support downlink coverage enhancement; the determination conditions for a cell to perform downlink coverage enhancement can also be provided, so that the terminal device can quickly determine whether the cell has performed downlink coverage enhancement based on the determination conditions for the cell to perform downlink coverage enhancement.

[0175] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[0176] Beam skipping mechanism is not supported;

[0177] Discontinuous reception DRX mechanism is not supported on the network side;

[0178] DRX configuration not provided;

[0179] Discontinuous DTX transmission mechanism is not supported on the network side.

[0180] DTX configuration not provided;

[0181] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[0182] Configuration information for SSB cycle extension is not provided;

[0183] or,

[0184] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[0185] Beam skipping mechanism not executed;

[0186] The discontinuous reception DRX mechanism on the network side was not implemented;

[0187] DRX configuration not provided;

[0188] The discontinuous transmission DTX mechanism on the network side was not executed;

[0189] DTX configuration not provided;

[0190] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[0191] Configuration information for SSB cycle extension is not provided.

[0192] In the above technical solution, a determining condition for a cell not supporting downlink coverage enhancement can be provided, so that the terminal device can quickly determine whether the cell supports downlink coverage enhancement based on the determining condition that the cell does not support downlink coverage enhancement; a determining condition for a cell not performing downlink coverage enhancement can also be provided, so that the terminal device can quickly determine whether the cell has performed downlink coverage enhancement based on the determining condition that the cell has not performed downlink coverage enhancement.

[0193] In some embodiments, the DRX configuration includes at least one of the following:

[0194] DRX configuration corresponding to the beam;

[0195] DRX configuration corresponding to the cell;

[0196] DRX configuration corresponding to the geographic region.

[0197] In some embodiments, the DTX configuration includes at least one of the following:

[0198] DTX configuration corresponding to the beam;

[0199] DTX configuration corresponding to the community;

[0200] DTX configuration corresponding to the geographic region.

[0201] In some embodiments, obtaining the first indication information and the second indication information of the cell includes:

[0202] Receive the first indication information and the second indication information of the cell sent by the network device.

[0203] In the above technical solution, the terminal device can receive first indication information and second indication information sent by the network device, so that the terminal device can quickly determine the cell status of the cell based on the first indication information and second indication information.

[0204] In some embodiments, when the cell status of the cell is determined according to the first indication information, the second indication information is ignored; and / or, the cell access prohibition identifier in the master information block (MIB) obtained by the terminal device is ignored.

[0205] In some embodiments, when the cell status of the cell is determined according to the second indication information, the first indication information is ignored; and / or, the cell access denied identifier in the MIB obtained by the terminal device is ignored.

[0206] Secondly, embodiments of this application provide an access control method applied to a network device, the method comprising:

[0207] Send the first indication information and the second indication information of the cell to the terminal device, wherein the terminal device supports NTN access;

[0208] The first indication information is used to indicate whether the cell allows or disables NTN connections, and the second indication information is used to indicate the downlink coverage enhancement information of the cell.

[0209] In the above technical solution, the network device can send first indication information and second indication information to the terminal device so that the terminal device can determine the cell status based on the first indication information and second indication information.

[0210] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[0211] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0212] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[0213] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0214] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[0215] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0216] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0217] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following:

[0218] Supports beam skipping mechanism;

[0219] Supports discontinuous reception DRX mechanism on the network side;

[0220] DRX configuration is provided;

[0221] Supports discontinuous DTX transmission mechanism on the network side;

[0222] DTX configuration is provided;

[0223] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[0224] It provides configuration information for SSB cycle extension;

[0225] or,

[0226] The cell has implemented downlink coverage enhancement, including at least one of the following:

[0227] A beam-hopping mechanism was implemented.

[0228] The discontinuous reception DRX mechanism on the network side was implemented;

[0229] DRX configuration is provided;

[0230] The network-side discontinuous transmission DTX mechanism was executed;

[0231] DTX configuration is provided;

[0232] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[0233] Configuration information for SSB cycle extension is provided.

[0234] In the above technical solutions,

[0235] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[0236] Beam skipping mechanism is not supported;

[0237] Discontinuous reception DRX mechanism is not supported on the network side;

[0238] DRX configuration not provided;

[0239] Discontinuous DTX transmission mechanism is not supported on the network side.

[0240] DTX configuration not provided;

[0241] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[0242] Configuration information for SSB cycle extension is not provided;

[0243] or,

[0244] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[0245] Beam skipping mechanism not executed;

[0246] The discontinuous reception DRX mechanism on the network side was not implemented;

[0247] DRX configuration not provided;

[0248] The discontinuous transmission DTX mechanism on the network side was not executed;

[0249] DTX configuration not provided;

[0250] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[0251] Configuration information for SSB cycle extension is not provided.

[0252] In some embodiments, the DRX configuration includes at least one of the following:

[0253] DRX configuration corresponding to the beam;

[0254] DRX configuration corresponding to the cell;

[0255] DRX configuration corresponding to the geographic region.

[0256] In some embodiments, the DTX configuration includes at least one of the following:

[0257] DTX configuration corresponding to the beam;

[0258] DTX configuration corresponding to the community;

[0259] DTX configuration corresponding to the geographic region.

[0260] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[0261] In some embodiments, the method further includes:

[0262] Send a second instruction message to the terminal device.

[0263] In some embodiments, the method further includes:

[0264] The second instruction information is carried through system information;

[0265] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0266] In some embodiments, the method further includes:

[0267] System information is sent to the terminal device, and the system information includes the second indication information.

[0268] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[0269] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0270] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0271] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0272] In some embodiments, the system information is System Information Block 1SIB1.

[0273] In some embodiments, the device type of the terminal device includes at least one of the following:

[0274] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[0275] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0276] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[0277] Thirdly, embodiments of this application provide a communication device applied to a terminal device, the terminal device supporting non-terrestrial network (NTN) access, including:

[0278] The transceiver module is used to acquire first indication information and second indication information of the cell. The first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate the downlink coverage enhancement information of the cell.

[0279] The processing module is configured to determine the cell status of the cell based on the first indication information or the second indication information. The cell status includes a prohibited state or a non-prohibited state. The cell status is used by the terminal device to determine whether it is allowed to access the cell.

[0280] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[0281] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0282] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[0283] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0284] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[0285] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0286] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0287] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[0288] In some embodiments, if the first indication information exists, the second indication information exists; and / or,

[0289] If the second indication information is present, the first indication information is used to instruct the cell to disable NTN connections.

[0290] In some embodiments, the transceiver module is specifically used for:

[0291] Receive the second instruction information sent by the network device.

[0292] In some embodiments, the second indication information is carried through system information;

[0293] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0294] In some embodiments, the transceiver module is specifically used for:

[0295] Receive system information sent by a network device, wherein the system information includes the second indication information.

[0296] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[0297] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0298] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0299] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0300] In some embodiments, the processing module is specifically used for:

[0301] The cell status of the cell is determined based on the device type of the terminal device and the first indication information; or,

[0302] The cell status of the cell is determined based on the device type of the terminal device and the second indication information.

[0303] In some embodiments, the device type includes at least one of the following:

[0304] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[0305] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0306] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[0307] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is specifically used for:

[0308] The cell status of the cell is determined based on the first indication information.

[0309] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is further configured to:

[0310] The cell status of the cell is determined based on the second indication information.

[0311] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is further configured to:

[0312] If the first preset condition and the second preset condition are met, the cell is determined to be a suitable cell; and / or,

[0313] If the first preset condition and / or the second preset condition are not met, the cell is determined to be an unsuitable cell.

[0314] In some embodiments, the first preset condition includes any one of the following:

[0315] The terminal device receives the second indication information and the terminal device supports downlink coverage enhancement;

[0316] The terminal device receives a second indication message, and the second indication message indicates that the cell supports downlink coverage enhancement, and the terminal device supports downlink coverage enhancement;

[0317] The terminal device receives a second indication message, and the second indication message indicates that the cell has performed downlink coverage enhancement, and that the terminal device supports downlink coverage enhancement;

[0318] The cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0319] The cell has implemented downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0320] In some embodiments, the first preset condition includes any one of the following:

[0321] The second indication information does not exist, or the second indication information exists and the terminal device supports downlink coverage enhancement;

[0322] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0323] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell has performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0324] The cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0325] The cell did not perform downlink coverage enhancement, or the cell performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0326] In some embodiments, the second preset condition includes:

[0327] The preset network includes at least one network broadcast by the cell, and the preset network is at least one of the following: a network selected by the terminal device, a network registered by the terminal device, a network equivalent to the network selected by the terminal device, and a network equivalent to the network registered by the terminal device;

[0328] Meets the community selection criteria;

[0329] The cell status is non-prohibited;

[0330] At least one tracking area (TA) broadcast by the cell meets the following conditions: the roaming no-tracking area list does not include the TA, and the preset network includes the network to which the TA belongs.

[0331] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is further configured to:

[0332] The cell is determined to be an acceptable cell if at least one of the following conditions is met:

[0333] The second indication information exists;

[0334] The second indication information indicates that the cell supports downlink coverage enhancement;

[0335] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0336] The cell supports enhanced downlink coverage;

[0337] The cell implemented downlink coverage enhancement.

[0338] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is further configured to:

[0339] If the third preset condition is met, the cell status of the cell is determined according to the first indication information;

[0340] If the fourth preset condition is met, the cell status of the cell is determined according to the second indication information.

[0341] In some embodiments, the third preset condition includes at least one of the following:

[0342] The terminal device detected the cell for the first time;

[0343] The terminal device determines the cell status of the cell for the first time;

[0344] The number of times the terminal device continuously detects the cell is less than or equal to a first threshold.

[0345] Within a first preset time period, the number of times the terminal device continuously detects the cell is less than or equal to a second threshold.

[0346] The number of times the terminal device continuously determines the cell status of the cell is less than or equal to a third threshold.

[0347] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is less than or equal to a fourth threshold.

[0348] The time interval between the current moment and the first moment is less than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[0349] The time interval between the current moment and the second moment is less than or equal to the second time threshold, where the second moment is the moment when the terminal device first determines the cell status of the cell;

[0350] The duration of the terminal device in the arbitrary cell selection state is less than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0351] The network device instructs the terminal device to determine the cell status based on the first indication information.

[0352] In some embodiments, the processing module is further configured to:

[0353] If the cell is determined to be in the prohibited state and at least one of the following conditions is met, the cell is determined to be an acceptable cell:

[0354] The first indication message indicates that the cell prohibits NTN connections;

[0355] The terminal device receives the second instruction information;

[0356] The second indication information indicates that the cell supports downlink coverage enhancement;

[0357] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0358] The cell supports enhanced downlink coverage;

[0359] The cell implemented downlink coverage enhancement;

[0360] The cell selection criteria for the cell are met;

[0361] The cell allows the terminal device to perform emergency bearer services if the terminal device determines that the cell status is prohibited.

[0362] The cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0363] In some embodiments, the fourth preset condition includes at least one of the following:

[0364] This is not the first time the terminal device has detected the cell;

[0365] The terminal device is not determining the cell status of the cell for the first time;

[0366] The number of times the terminal device continuously detects the cell is greater than or equal to a first threshold.

[0367] Within a first preset time period, the number of times the terminal device continuously detects the cell is greater than or equal to a second threshold.

[0368] The number of times the terminal device continuously determines the cell status of the cell is greater than or equal to the third threshold.

[0369] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is greater than or equal to a fourth threshold.

[0370] The time interval between the current moment and the first moment is greater than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[0371] The time interval between the current time and the second time is greater than or equal to the second time threshold, where the second time is the moment when the terminal device first determines the cell status of the cell;

[0372] The duration of the terminal device in the arbitrary cell selection state is greater than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0373] The network device instructs the terminal device to determine the cell status based on the second instruction information.

[0374] In some embodiments, when the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information, the processing module is further configured to:

[0375] The cell status of the cell is determined based on the first indication information.

[0376] In some embodiments, where the terminal device supports downlink coverage enhancement, the processing module is further configured to:

[0377] The cell status of the cell is determined based on the second indication information.

[0378] In some embodiments, the processing module is further configured to:

[0379] Determine whether the cell supports downlink coverage enhancement; or,

[0380] Determine whether the cell has implemented downlink coverage enhancement.

[0381] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following: supporting beam hopping mechanism;

[0382] Supports discontinuous reception DRX mechanism on the network side;

[0383] DRX configuration is provided;

[0384] Supports discontinuous DTX transmission mechanism on the network side;

[0385] DTX configuration is provided;

[0386] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[0387] It provides configuration information for SSB cycle extension;

[0388] or,

[0389] The cell has implemented downlink coverage enhancement, including at least one of the following:

[0390] A beam-hopping mechanism was implemented.

[0391] The discontinuous reception DRX mechanism on the network side was implemented;

[0392] DRX configuration is provided;

[0393] The network-side discontinuous transmission DTX mechanism was executed;

[0394] DTX configuration is provided;

[0395] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[0396] Configuration information for SSB cycle extension is provided.

[0397] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[0398] Beam skipping mechanism is not supported;

[0399] Discontinuous reception DRX mechanism is not supported on the network side;

[0400] DRX configuration not provided;

[0401] Discontinuous DTX transmission mechanism is not supported on the network side.

[0402] DTX configuration not provided;

[0403] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[0404] Configuration information for SSB cycle extension is not provided;

[0405] or,

[0406] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[0407] Beam skipping mechanism not executed;

[0408] The discontinuous reception DRX mechanism on the network side was not implemented;

[0409] DRX configuration not provided;

[0410] The discontinuous transmission DTX mechanism on the network side was not executed;

[0411] DTX configuration not provided;

[0412] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[0413] Configuration information for SSB cycle extension is not provided.

[0414] In some embodiments, the DRX configuration includes at least one of the following:

[0415] DRX configuration corresponding to the beam;

[0416] DRX configuration corresponding to the cell;

[0417] DRX configuration corresponding to the geographic region.

[0418] In some embodiments, the DTX configuration includes at least one of the following:

[0419] DTX configuration corresponding to the beam;

[0420] DTX configuration corresponding to the community;

[0421] DTX configuration corresponding to the geographic region.

[0422] In some embodiments, the transceiver module is specifically used for:

[0423] Receive the first indication information and the second indication information of the cell sent by the network device.

[0424] In some embodiments, when the cell status of the cell is determined according to the first indication information, the second indication information is ignored; and / or, the cell access prohibition identifier in the master information block (MIB) obtained by the terminal device is ignored.

[0425] In some embodiments, when the cell status of the cell is determined according to the second indication information, the first indication information is ignored; and / or, the cell access prohibition identifier in the Master Information Block (MIB) obtained by the terminal device is ignored.

[0426] Fourthly, embodiments of this application provide a communication device applied to a network device, comprising:

[0427] The transceiver module is used to send the first indication information and the second indication information of the cell to the terminal device, which supports NTN access;

[0428] The first indication information is used to indicate whether the cell allows or disables NTN connections, and the second indication information is used to indicate the downlink coverage enhancement information of the cell.

[0429] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[0430] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0431] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[0432] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0433] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[0434] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0435] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0436] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[0437] In some embodiments, the transceiver module is further configured to:

[0438] Send a second instruction message to the terminal device.

[0439] In some embodiments, the second indication information is carried through system information;

[0440] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0441] In some embodiments, the device type of the terminal device includes at least one of the following:

[0442] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[0443] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0444] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[0445] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following:

[0446] Supports beam skipping mechanism;

[0447] Supports discontinuous reception DRX mechanism on the network side;

[0448] DRX configuration is provided;

[0449] Supports discontinuous DTX transmission mechanism on the network side;

[0450] DTX configuration is provided;

[0451] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[0452] It provides configuration information for SSB cycle extension;

[0453] or,

[0454] The cell has implemented downlink coverage enhancement, including at least one of the following:

[0455] A beam-hopping mechanism was implemented.

[0456] The discontinuous reception DRX mechanism on the network side was implemented;

[0457] DRX configuration is provided;

[0458] The network-side discontinuous transmission DTX mechanism was executed;

[0459] DTX configuration is provided;

[0460] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[0461] Configuration information for SSB cycle extension is provided.

[0462] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[0463] Beam skipping mechanism is not supported;

[0464] Discontinuous reception DRX mechanism is not supported on the network side;

[0465] DRX configuration not provided;

[0466] Discontinuous DTX transmission mechanism is not supported on the network side.

[0467] DTX configuration not provided;

[0468] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[0469] Configuration information for SSB cycle extension is not provided;

[0470] or,

[0471] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[0472] Beam skipping mechanism not executed;

[0473] The discontinuous reception DRX mechanism on the network side was not implemented;

[0474] DRX configuration not provided;

[0475] The discontinuous transmission DTX mechanism on the network side was not executed;

[0476] DTX configuration not provided;

[0477] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[0478] Configuration information for SSB cycle extension is not provided.

[0479] In some embodiments, the DRX configuration includes at least one of the following:

[0480] DRX configuration corresponding to the beam;

[0481] DRX configuration corresponding to the cell;

[0482] DRX configuration corresponding to the geographic region.

[0483] In some embodiments, the DTX configuration includes at least one of the following:

[0484] DTX configuration corresponding to the beam;

[0485] DTX configuration corresponding to the community;

[0486] DTX configuration corresponding to the geographic region.

[0487] In some embodiments, if the first indication information exists, the second indication information exists; and / or,

[0488] If the second indication information is present, the first indication information is used to instruct the cell to disable NTN connections.

[0489] In some embodiments, the transceiver module is further configured to:

[0490] System information is sent to the terminal device, and the system information includes the second indication information.

[0491] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[0492] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0493] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0494] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0495] In some embodiments, the system information is System Information Block 1SIB1.

[0496] Fifthly, embodiments of this application provide a communication system, including a terminal device and a network device;

[0497] The terminal device is used to execute the access control method described in any one of the first aspects;

[0498] The network device is used to perform the access control method described in any of the second aspects.

[0499] Sixthly, embodiments of this application provide a communication device, including: a memory and a processor.

[0500] The memory stores computer-executed instructions;

[0501] The processor executes computer execution instructions stored in the memory to implement the access control method as described in any of the first aspects.

[0502] Seventhly, embodiments of this application provide a communication device, including a memory and a processor.

[0503] The memory stores computer-executed instructions;

[0504] The processor executes computer execution instructions stored in the memory to implement the access control method as described in any of the second aspects.

[0505] Eighthly, embodiments of this application provide a storage medium storing instructions that, when executed on the instruction communication device, are used to implement the access control method as described in any of the first aspects.

[0506] Ninthly, embodiments of this application provide a storage medium storing instructions that, when executed on the instruction communication device, are used to implement the access control method as described in any of the second aspects.

[0507] In a tenth aspect, embodiments of this application provide a computer program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform the access control method as described in any of the first aspects.

[0508] Eleventhly, embodiments of this application provide a computer program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform the access control method as described in any of the second aspects.

[0509] The access control method, communication device, communication system, communication equipment, storage medium, and program product provided in this application embodiment enable terminal devices to support non-terrestrial network (NTN) access. The terminal device acquires first and second indication information of a cell; and determines the cell status based on the first or second indication information. By determining the cell status, the terminal device can obtain normal service in a cell when the cell status is determined to be non-prohibited, avoiding network devices rejecting the terminal device's service requests. This helps shorten the latency of the terminal device accessing the network, improves the user experience, and reduces the need for repeated access operations, thus reducing resource consumption. Attached Figure Description

[0510] Figure 1 This application provides a schematic diagram of the architecture of a communication system.

[0511] Figure 2 A schematic diagram of the BH mechanism provided in the embodiments of this application;

[0512] Figure 3 This is one of the exemplary schematic diagrams illustrating an access control method according to an embodiment of this application;

[0513] Figure 4This is a second exemplary schematic diagram illustrating an access control method according to an embodiment of this application;

[0514] Figure 5 This is a third exemplary schematic diagram illustrating an access control method according to an embodiment of this application;

[0515] Figure 6 This is a fourth exemplary schematic diagram illustrating an access control method according to an embodiment of this application;

[0516] Figure 7 This is the fifth exemplary schematic diagram of an access control method according to an embodiment of this application;

[0517] Figure 8 This is a sixth exemplary schematic diagram illustrating an access control method according to an embodiment of this application;

[0518] Figure 9 This is the seventh exemplary schematic diagram of an access control method according to an embodiment of this application;

[0519] Figure 10 This is an eighth exemplary schematic diagram illustrating an access control method according to an embodiment of this application;

[0520] Figure 11 This is one of the structural schematic diagrams of the communication device provided in the embodiments of this application;

[0521] Figure 12 This is a second schematic diagram of the structure of the communication device provided in the embodiments of this application;

[0522] Figure 13 This is an exemplary structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0523] First, the relevant terms used in this application will be explained.

[0524] Non-Terrestrial Network (NTN): NTN provides non-terrestrial New Radio (NR) access to terminals through NTN payloads and NTN gateway stations. NTN includes Low Earth orbit (LEO) satellites, Medium Earth orbit (MEO) satellites, Geosynchronous Orbit (GSO) satellites, and High Altitude Platform Systems (HAPS). Communication between the NTN payload and terminal equipment is based on a service link, while communication between the NTN payload and gateway stations is based on a feeder link.

[0525] In the NTN system, there are three types of cells:

[0526] Earth-fixed cells: Communication services can be provided by a beam that continuously covers the same geographical area; for example, the beam can be generated by a GSO satellite.

[0527] Quasi-Earth-fixed cell: Communication services can be provided by a beam that covers one geographic area at some times and another geographic area at other times. For example, the beam can be a steerable beam generated by NGSO.

[0528] Earth-moving cells: provided by a beam that slides across the Earth’s surface over its coverage area; for example, this beam can generate a fixed or non-steerable beam for NSGO satellites.

[0529] Network equipment refers to network devices located in space that are capable of communicating with terminal devices. Network equipment can also be called space base stations, spaceborne base stations, satellites, satellite communication nodes, satellite communication modules, or base stations, etc. This type of network equipment can also be called access network equipment or wireless access network equipment. Network equipment can be a base station (BTS) in a satellite-borne Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system; a base station (NodeB, NB) in a satellite-borne Wideband Code Division Multiple Access (WCDMA) system; an evolved base station (eNB or eNodeB) in a satellite-borne LTE system; a base station (gNB) in a satellite-borne 5G network; a base station in a satellite-borne future network (e.g., 6G network) after 5G; a base station in a satellite-borne future evolved Public Land Mobile Network (PLMN) network; a transmission reception point (TRP) in a satellite-borne transmission reception point; a radio controller in a satellite-borne cloud radio access network (CRAN) scenario; or a city base station, micro base station, pico base station, or femtobase station, etc., carried by satellite.

[0530] Terminal equipment refers to equipment that includes wireless transceiver capabilities and can cooperate with network equipment to provide communication services to users. Terminal equipment can also be called user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, user terminal equipment, wireless communication equipment, user agent, or user device, etc. Examples of terminal devices currently include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, shipboard devices, and wearable devices.

[0531] In this application, activation can be understood as taking effect, and deactivation can be understood as becoming invalid.

[0532] In this application, the term "comprising" and its variations can refer to non-limiting inclusion; the term "or" and its variations can refer to "and / or". "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0533] In this application, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. In this application, the term "at least one" refers to one or more, and "more than one" refers to two or more. In this application, the term "at least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0534] In this application, the words "in some embodiments," "exemplary," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplary," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "in some embodiments," "exemplary," or "for example" is intended to present the relevant concepts in a specific manner. In this application, the words "in the case of" or "when" indicate a condition.

[0535] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0536] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the locality.

[0537] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0538] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. Please refer to [link / reference]. Figure 1 The communication system 100 includes a terminal device 101 (e.g., UE) and a network device 102 (e.g., satellite or base station), which has a service link with the terminal device. The network device can provide the terminal device with non-terrestrial New Radio (NR) access, etc.

[0539] It should be understood that Figure 1The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this application. In actual applications, they may include two or more terminal devices and two or more network devices. Figure 1 The communication system shown is only an example of one terminal device 101 and one network device 102.

[0540] It is understood that the communication system described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions proposed in the embodiments of this application. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in the embodiments of this application are also applicable to similar technical problems.

[0541] The following embodiments of this application can be applied to Figure 1 The communication system 100 shown, or a part thereof, but not limited to it. Figure 1 The entities shown are illustrative; a communication system may include... Figure 1 All or part of the main body, or may include Figure 1 Other entities besides the main body, the number and form of each entity are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be unconnected or connected, and the connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0542] In NTN systems, due to the limited transmit power of network devices, they may not be able to activate all beams at a given time, necessitating consideration of downlink coverage enhancement. The BH (Broadcast Height) mechanism is one such mechanism that enables downlink coverage enhancement by allowing power to be shared among different beams. Based on this BH mechanism, network devices can activate some beams and deactivate others for a period of time; conversely, they can activate other beams and deactivate others for a different period of time. The following section will combine... Figure 2 The BH mechanism will be explained.

[0543] Figure 2 This is a schematic diagram of the BH mechanism provided in an embodiment of this application. Figure 2 As shown, network devices (e.g., satellites) have multiple beams. These multiple beams include, for example, beams 1 through 14.

[0544] At time T1, network devices can activate beams 1 to 4 and deactivate beams 5 to 14.

[0545] At time T2, the network device can activate beams 5, 8, 9 and 12, and deactivate beams 1 through 4, 6, 7, 10, 11, 13 and 14.

[0546] NTN terminal equipment may include NTN terminal equipment that supports downlink coverage enhancement and NTN terminal equipment that does not support downlink coverage enhancement. In this embodiment and subsequent embodiments, the NTN terminal equipment is a terminal equipment that supports NTN access. During the communication process between the network equipment and the NTN terminal equipment using a beam-hopping mechanism, for NTN terminal equipment that does not support downlink coverage enhancement, the following two scenarios may exist:

[0547] The first scenario: The NTN cells within the coverage area of ​​the network device include cells that support downlink coverage enhancement or have implemented downlink coverage enhancement, and the NTN terminal device is allowed to camp or access the network in such cells.

[0548] In this scenario, although the NTN terminal device can camp on or access NTN cells within the beam's coverage area, it lacks downlink coverage enhancement capabilities. This prevents it from understanding the network device's beam-hopping mechanism and thus the timing of beam activation and / or deactivation. To ensure timely communication with the network within the beam's coverage area, the NTN terminal device must continuously perform measurements, monitoring, or access initiation operations, resulting in resource waste and significant power consumption.

[0549] The second scenario: During a certain period of time (e.g., within a few hours), all NTN cells within the coverage area of ​​the network device are cells that support downlink coverage enhancement or have implemented downlink coverage enhancement, and the NTN terminal device is not allowed to camp or access these cells.

[0550] In this scenario, because the NTN terminal device does not support downlink coverage enhancement, the network device may refuse normal communication services initiated by the NTN terminal device during a certain period of time, resulting in increased access latency for the NTN terminal device and a poor user experience.

[0551] In view of this, this application provides an access control method, communication device, communication system, communication equipment, storage medium, and program product. The terminal device supports non-terrestrial network (NTN) access. The terminal device obtains first and second indication information of a cell and determines the cell status based on the first or second indication information. This cell status is used by the terminal device to determine whether it is allowed to access the cell. By determining the cell status, this method allows the terminal device to obtain normal services in a cell when the cell status is non-prohibited. Furthermore, even when the cell status is prohibited and certain preset conditions are met, the terminal device can still obtain limited services in that cell. This avoids network devices rejecting the terminal device's service requests, which helps to shorten the latency of the terminal device accessing the network device and improve the user experience. Additionally, it reduces the need for the terminal device to repeatedly initiate access operations, thus reducing resource consumption.

[0552] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0553] The interaction process between terminal devices and network devices can be as follows: Figure 3 As shown in the example, Figure 3 This is one of the exemplary schematic diagrams illustrating an access control method according to an embodiment of this application. The execution subject of the access control method in this embodiment is a terminal device that supports NTN access. It should be understood that this access control method can be executed alone, or it can be executed together with any embodiment of this application or any possible implementation thereof, or it can be executed together with any technical solution in related technologies.

[0554] Please see Figure 3 The access control method may include the following steps:

[0555] S301. The network device sends the first and second indication information of the cell to the terminal device.

[0556] Among them, the terminal equipment supports NTN access.

[0557] In some embodiments, the network device may send system information to the terminal device, the system information including first instruction information and second instruction information.

[0558] In some embodiments, the system information may be System Information Block Type 1 (SIB1).

[0559] In some embodiments, when the first indication information and / or the second indication information of a cell are updated, the network device may also send the updated first indication information and / or the second indication information of the cell to the terminal device.

[0560] In some embodiments, the terminal device obtains first indication information and second indication information of the cell.

[0561] In some embodiments, the terminal device may receive first indication information and second indication information of a cell sent by the network device, but is not limited thereto; the terminal device may also receive first indication information and second indication information of a cell sent by other entities.

[0562] In some embodiments, the first indication information and the second indication information can be carried through system information.

[0563] In some embodiments, the terminal device may receive system information sent by the network device, which may include second indication information.

[0564] In some embodiments, the terminal device may receive a second instruction message sent by the network device.

[0565] In some embodiments, the system information may also include first indication information.

[0566] In some embodiments, the system information may be SIB1.

[0567] In some embodiments, the second indication information is carried by system information. If the system information also includes the identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0568] In some embodiments, where the system information includes second indication information and may also include identifiers of multiple networks, the second indication information may be common to the multiple networks; that is, the second indication information may be used to indicate whether each of the multiple networks supports downlink coverage enhancement.

[0569] In some embodiments, the second indication information may be used to indicate that the plurality of networks support downlink coverage enhancement; or, the second indication information may be used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0570] When the system information includes first indication information and also includes identifiers of multiple networks, the first indication information can be used to indicate that the cells where the multiple networks are located allow NTN connections, or the first indication information can be used to indicate that the cells where the multiple networks are located prohibit NTN connections.

[0571] The first indication information can also be common to multiple networks. The first indication information can be used to indicate whether each cell in multiple networks allows NTN connections or prohibits NTN connections.

[0572] In some embodiments, the multiple networks may include at least one Public Land Mobile Network (PLMN) and / or at least one Non-Public Network (NPN). At least one PLMN may represent one or more PLMNs, and at least one NPN may represent one or more NPNs.

[0573] In some embodiments, the cell can be a cell within the coverage area of ​​the network device's communication service.

[0574] It is understandable that if a cell allows NTN connections, it can allow NTN terminal devices to access the cell; if a cell prohibits NTN connections, it can refuse access to NTN terminal devices.

[0575] In some embodiments, the first indication information may be used to indicate whether the cell allows NTN connection or prohibits NTN connection.

[0576] In some embodiments, the second indication information may be used to indicate downlink coverage enhancement information for the cell.

[0577] In some embodiments, the downlink coverage enhancement information may be at least one of the following: the cell supports downlink coverage enhancement; the cell does not support downlink coverage enhancement; the cell has implemented downlink coverage enhancement; or the cell has not implemented downlink coverage enhancement.

[0578] In some embodiments, the second indication information may be used to indicate whether the cell supports downlink coverage enhancement; or, the second indication information may be used to indicate whether the cell has performed downlink coverage enhancement.

[0579] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement, or it can be expressed as: the second indication information can be used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement.

[0580] In some embodiments, the second indication information is used to indicate whether the cell has performed downlink coverage enhancement, or it can be expressed as: the second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0581] In some embodiments, the second indication information may be a first preset value or a second preset value, wherein...

[0582] The first preset value can be used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0583] The second preset value can be used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0584] In some embodiments, one bit can be used to represent the second indication information, and the value of the bit can be either a first preset value or a second preset value.

[0585] In some embodiments, the first preset value may include, but is not limited to, any one of the following: "barred", "true" or "1", "supported", "executed", and the second preset value may include, but is not limited to, any one of the following: "not barred", "false", "0", "not supported", "not executed".

[0586] In some embodiments, the first indication information may be a third preset value or a fourth preset value, wherein the third preset value is used to indicate that the cell allows NTN connection, and the fourth preset value is used to indicate that the cell prohibits NTN connection.

[0587] In some embodiments, one bit can be used to represent the first indication information. For example, the value of the bit can be "allowed" or "barred". Terms such as "allowed" and "not barred" can be used interchangeably, and terms such as "barred" and "rejected" can be used interchangeably.

[0588] Understandably, if the value of this bit is "allowed" or "not barred", it means that the cell allows NTN connections; if the value of this bit is "barred" or "denied", it means that the cell prohibits NTN connections.

[0589] In some embodiments, the first indication information may be the NTN cell-barred NTN in SIB1.

[0590] In some embodiments, the second indication information may include, but is not limited to, any of the following: cellBarredDTX, cellBarredDRX, cellBarredDTXDRX, cellBarredDLcov enh.

[0591] In cellBarredDTX and cellBarredDTXDRX, "DTX" stands for "Discontinuous Reception"; "DRX" stands for "Discontinuous Reception"; and "DLcov_enh" stands for "Downlink Coverage Enhancement".

[0592] In some embodiments, the terminal device may also perform the following steps: determining whether the cell supports downlink coverage enhancement; or determining whether the cell has performed downlink coverage enhancement.

[0593] In some embodiments, the terminal device may determine whether the cell supports downlink coverage enhancement based on the second indication information, or the terminal device may determine whether the cell has performed downlink coverage enhancement based on the second indication information.

[0594] In some embodiments, determining whether a cell supports downlink coverage enhancement can also be expressed as: determining whether a cell supports downlink coverage enhancement or does not support downlink coverage enhancement.

[0595] In some embodiments, determining whether a cell has performed downlink coverage enhancement can also be expressed as: determining whether a cell has performed downlink coverage enhancement or not.

[0596] In some embodiments, the terminal device may also determine that the cell supports downlink coverage enhancement based on a first configuration condition.

[0597] In some implementations, the first configuration condition for determining that a cell supports downlink coverage enhancement may include at least one of the following: supporting beam hopping mechanism; supporting discontinuous reception (DRX) mechanism on the network side; providing DRX configuration; supporting discontinuous transmission (DTX) mechanism on the network side; providing DTX configuration; supporting Synchronization Signal and Physical Broadcast Channel block (SSB) periodic extension; and providing configuration information for SSB periodic extension.

[0598] In some embodiments, the terminal device may also determine that the cell has performed downlink coverage enhancement based on a second configuration condition.

[0599] In some embodiments, determining that a cell has implemented a second configuration condition for downlink coverage enhancement may include at least one of the following: implementing a beam hopping mechanism; implementing a network-side discontinuous reception (DRX) mechanism; providing DRX configuration; implementing a network-side discontinuous transmission (DTX) mechanism; providing DTX configuration; implementing synchronization signal and physical broadcast channel block periodicity extension; and providing configuration information for SSB periodicity extension.

[0600] In some embodiments, the terminal device may also determine that the cell does not support downlink coverage enhancement based on a third configuration condition.

[0601] In some embodiments, the third configuration condition for determining that a cell does not support downlink coverage enhancement may include at least one of the following: not supporting beam hopping mechanism; not supporting network-side discontinuous reception (DRX) mechanism; not providing DRX configuration; not supporting network-side discontinuous transmission (DTX) mechanism; not providing DTX configuration; not supporting synchronization signal and physical broadcast channel block periodic extension; and not providing SSB periodic extension configuration information.

[0602] In some embodiments, the terminal device may also determine that the cell has not performed downlink coverage enhancement based on a fourth configuration condition.

[0603] In some embodiments, determining that a cell has not performed a fourth configuration condition for downlink coverage enhancement may include at least one of the following: beam hopping mechanism not performed; discontinuous reception (DRX) mechanism not performed on the network side; DRX configuration not provided; discontinuous transmission (DTX) mechanism not performed on the network side; DTX configuration not provided; synchronization signal and physical broadcast channel block (SSB) periodic extension not performed; and SSB periodic extension configuration information not provided.

[0604] In some embodiments, SSB period extension refers to extending the SSB period configured on the network device. If the SSB period configured on the network device is greater than a preset threshold, it indicates that the SSB period has been extended. For example, if the preset threshold is 160 milliseconds (ms), and the SSB period is 320 ms or 640 ms, it indicates that the SSB period has been extended.

[0605] In some embodiments, "no configuration information for SSB period extension is provided" means that the network device does not provide configuration information for SSB period extension. This configuration information may include the value range of SSB periods, which may include the values ​​of multiple SSB periods, and the value of each SSB period is greater than a preset threshold.

[0606] In some embodiments, DRX configuration may include at least one of the following: DRX configuration corresponding to a beam; DRX configuration corresponding to a cell; DRX configuration corresponding to a geographical region.

[0607] In some embodiments, the beam can be a satellite beam, an SSB beam, or a Channel State Information-Reference Signal (CSI-RS) beam.

[0608] In some embodiments, the number of beams can be one or more.

[0609] In some embodiments, a DRX configuration corresponding to a beam indicates that the DRX configuration can be a beam-level DRX configuration; a DRX configuration corresponding to a cell indicates that the DRX configuration can be a cell-level DRX configuration; and a DRX configuration corresponding to a geographical region indicates that the DRX configuration can be a geographical region-level DRX configuration.

[0610] Beam-level DRX configuration refers to DRX that can be configured for a specific beam, cell-level DRX configuration refers to DRX that can be configured for the entire cell area, and geographic region-level DRX configuration refers to DRX that can be configured for a specific geographic region.

[0611] This specific geographical area can include any of the following types of areas: areas with regular shapes and areas with irregular shapes. Regular shapes can be geometric shapes that are symmetrical and uniform; for example, regular shapes can include circles or polygons. Irregular shapes can be shapes other than regular shapes.

[0612] In some embodiments, the specific geographic area can be a circular area, and the parameters of the circular area can include information about a reference point and its radius. The information about the reference point can include longitude and latitude. For example, the reference point can be the center of the circular area.

[0613] In some embodiments, the specific geographic region can be a polygonal region, and the parameters of the polygonal region can include information about multiple reference points, the information of each reference point being its longitude and latitude. For example, the multiple reference points can be multiple vertices of a polygon.

[0614] In some embodiments, the DRX configuration may be used to indicate at least one of the following:

[0615] During the duration of the beam being in the first state, where the first state is the beam being "off," meaning the beam cannot receive any signals, it is understandable that the terminal device cannot send any messages while the beam is in the first state.

[0616] During the duration of the beam being in the second state, where the second state is a state where the beam can only receive partial signals, for example, the beam can only receive Uplink-Common Control Channel-Message (UL-CCCH-Message) transmitted on the uplink. It is understood that when the beam is in the second state, the terminal device can only initiate a random access procedure triggered by any of the following operations: connection establishment, connection restoration, connection reconstruction, or system information request.

[0617] During the duration of the beam being in the third state, where the third state is the "active traffic" state, meaning the beam can receive downlink signaling, uplink signaling, and data, the terminal device can transmit downlink signaling, uplink signaling, and data.

[0618] In some embodiments, the DTX configuration may include at least one of the following: a DTX configuration corresponding to a beam; a DTX configuration corresponding to a cell; or a DTX configuration corresponding to a geographic region.

[0619] In some embodiments, a DTX configuration corresponding to a beam indicates that the DTX configuration can be a beam-level DTX configuration; a DTX configuration corresponding to a cell indicates that the DTX configuration can be a cell-level DTX configuration; and a DTX configuration corresponding to a geographic region indicates that the DTX configuration can be a geographic region-level DTX configuration.

[0620] Beam-level DTX configuration refers to DTX that can be configured for a specific beam, cell-level DTX configuration refers to DTX that can be configured for the entire cell area, and geographic area-level DTX configuration refers to DTX that can be configured for a specific geographic area.

[0621] In some embodiments, the DTX configuration may be used to indicate at least one of the following:

[0622] During the duration of the beam being in state N1, where N1 represents the beam footprint being "off," meaning the beam footprint is not served by any signal, in other words, there is no satellite service in that area. Understandably, while the beam is in state N1, the terminal device cannot receive any messages.

[0623] During the duration of the beam being in the N2 state, where the N2 state is the "public message only" state of the beam footprint, meaning the beam footprint has no active user traffic. Understandably, while the beam is in the N2 state, network devices can use the beam to send public messages (e.g., necessary information for cell search and initial access), and terminals can receive public messages (e.g., system information).

[0624] During the duration of the beam being in the N3 state, where the N3 state is a "active traffic" state of the beam footprint, meaning there is at least one active device on the beam footprint (e.g., a device providing Voice over New Radio, VoNR). It is understood that while the beam is in the N3 state, network devices can use the beam to send any message (e.g., providing necessary information for cell search and initial access), and terminal devices can receive any message (e.g., uplink signaling, downlink signaling, and data).

[0625] In some embodiments, public messages can be acquired by any terminal device within the coverage area of ​​the beam. These public messages may include necessary information for the terminal device's cell discovery, Radio Resource Control (RRC) connection establishment, and RRC connection recovery processes. For example, public messages may include system broadcast messages and emergency notifications. System broadcast messages may include network identifiers, time synchronization information, and system configuration parameters, while emergency notifications may include natural disaster warnings or public safety alerts.

[0626] In some embodiments, the message may include necessary information for the terminal device’s cell discovery, RRC connection establishment, and RRC connection recovery processes. For example, the message may also include uplink signaling, downlink signaling, and data.

[0627] S302. The terminal device determines the cell status based on the first instruction information or the second instruction information.

[0628] The cell status can be either prohibited or not prohibited.

[0629] Cell status can be used by terminal devices to determine whether they are allowed to access the cell.

[0630] In some embodiments, if the cell status is non-prohibited, it means that the cell allows the terminal device to access or stay.

[0631] In some embodiments, if the cell status is prohibited, it can also be determined whether the terminal device can stay or access the cell to obtain restricted services based on the device type of the terminal device.

[0632] In some embodiments, if a cell is in a prohibited state, the terminal device will not be allowed to select that cell during the cell selection and cell reselection process, and the terminal device should select another cell besides that cell.

[0633] In some embodiments, operators may implement cell reservations or access restrictions based on mechanisms that allow the use of cell status indicators and special reservation indicators to control the cell selection and reselection process.

[0634] Based on this mechanism, network devices can send cell status indication information to terminal devices. This cell status indication information can be carried through a Master Information Block (MIB) or SIB1 message, and can include the following two parameters:

[0635] The first type of parameter: cellBarred.

[0636] The MIB can carry this first type of parameter, and the type of the information element (IE) for this first type of parameter can include "barred" or "not barred". When multiple PLMNs or multiple NPNs are indicated in the SIB1, this first type of parameter can be common to all of these PLMNs or NPNs. If the SIB1 carries the second type of parameter, the terminal device can ignore the first type of parameter.

[0637] The second parameter: cellBarredNTN.

[0638] The SIB1 can carry this second parameter, and the type of the InformationElement (IE) for this second parameter can include "barred" or "not barred". When multiple PLMNs or NPNs are indicated in the SIB1, this second parameter is common to all of them. If the terminal device does not support NTN access, the terminal device can ignore this second parameter.

[0639] If the terminal device is in any of the following states: Radio Resource Control (RRC) Idle (RRC_IDLE), Radio Resource Control Inactive (RRC_INACTIVE), or Radio Resource Control Connected (RRC_CONNECTED) with T311 timer running, the terminal device can determine the cell state of the cell in the following way when acquiring the MIB or SIB:

[0640] (1) If the terminal device does not support NTN access or does not have NTN capability, and the IE type of cellBarred in the MIB obtained by the terminal device is "barred", then the terminal device determines that the cell status of the cell is barred.

[0641] (2) If the terminal device supports NTN access or has NTN capability, the terminal device ignores the IE type of cellBarred in the obtained MIB as "barred"; then the terminal device can determine the cell status based on cellBarredNTN in SIB1.

[0642] (3) If the terminal device supports NTN access or has NTN capability, and the IE type of cellBarredNTN in the SIB1 obtained by the terminal device is "barred" or cellBarredNTN is not included in the obtained SIB1, then the terminal device determines that the cell status of the cell is barred.

[0643] In some embodiments, the cell status can be determined based on the first indication information; or, the cell status can be determined based on the second indication information.

[0644] In some embodiments, the terminal device may determine the cell status based on the device type of the terminal device and the first indication information; or, it may determine the cell status based on the device type of the terminal device and the second indication information.

[0645] In some embodiments, the device type of the terminal device may include at least one of the following:

[0646] The first device type is a terminal device that supports downlink coverage enhancement. It should be noted that if a terminal device supports downlink coverage enhancement, it must also be able to obtain the second indication information. For example, a terminal device of the first device type can be an NTN terminal of the 19th generation (Release 19) of the 3rd Generation Partnership Project (3GPP) that supports downlink coverage enhancement.

[0647] The second device type is a terminal device that does not support downlink coverage enhancement and supports obtaining second indication information. For example, the terminal device of this second device type can be an NTN terminal device that does not support downlink coverage enhancement and uses 3GPPRelease19.

[0648] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of second indication information. For example, the terminal device of the third device type can be an NTN terminal device prior to 3GPP Release 19, or a terminal device of 3GPP Release 17 or Release 18.

[0649] It should be noted that terminal devices of the first, second, and third device types all support NTN access.

[0650] In some embodiments, "supporting acquisition of second indication information" can be used interchangeably with terms such as "supporting identification of second indication information," where "supporting acquisition of second indication information" means that the terminal device can support acquisition and identification of second indication information.

[0651] In some embodiments, "does not support obtaining second indication information" can be used interchangeably with terms such as "does not support recognizing second indication information". Here, "does not support obtaining second indication information" can be used to indicate that the terminal device does not support obtaining second indication information, or that the terminal device supports obtaining second indication information but does not support recognizing second indication information.

[0652] In some embodiments, if the terminal device receives the first instruction information, the terminal device may receive the second instruction information.

[0653] In some embodiments, when the terminal device receives the second indication information, the first indication information may be used to instruct the cell to prohibit NTN connections.

[0654] In some embodiments, if the first indication information exists, the second indication information also exists; and / or, if the second indication information exists, the first indication information is used to indicate that the cell prohibits NTN connections.

[0655] In some embodiments, if the network device can provide first indication information (or second indication information) so that the terminal device can obtain the first indication information (or second indication information), it indicates that the first indication information (or second indication information) exists; if the network device does not provide first indication information (or second indication information) so that the terminal device cannot obtain the first indication information (or second indication information), it indicates that the first indication information (or second indication information) does not exist.

[0656] In some embodiments, the phrase "the first indication information exists" can be interchanged with terms such as "the network device provides the first indication information" or "the terminal device receives the first indication information".

[0657] In some embodiments, the presence of the first indication information can be used to indicate that: the cell allows NTN connections; or, the cell prohibits NTN connections.

[0658] In some embodiments, the presence of the first indication information can be used to indicate that the cell allows NTN connections; the absence of the first indication information can be used to indicate that the cell prohibits NTN connections.

[0659] In some embodiments, the phrase "the second indication information exists" can be interchanged with terms such as "the network device provides the second indication information" or "the terminal device receives the second indication information".

[0660] In some embodiments, the presence of the second indication information can be used to indicate at least one of the following: the cell supports downlink coverage enhancement; the cell does not support downlink coverage enhancement; the cell has implemented downlink coverage enhancement; or the cell has not implemented downlink coverage enhancement.

[0661] In some embodiments, the presence of the second indication information can be used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement; the absence of the second indication information can be used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0662] In some embodiments, cell support for downlink coverage enhancement can be used to indicate that: the cell has the capability to support downlink coverage enhancement; or, the cell has the capability to support downlink coverage enhancement and the cell has implemented the downlink coverage enhancement capability.

[0663] In some embodiments, the statement that a cell does not support downlink coverage enhancement can be used to indicate that: the cell does not have the function to support downlink coverage enhancement; or, the cell has the function to support downlink coverage enhancement, but the cell does not perform the downlink coverage enhancement function.

[0664] In some embodiments, the fact that a cell has performed downlink coverage enhancement can be used to indicate that the cell has the capability to support downlink coverage enhancement and that the cell has performed downlink coverage enhancement.

[0665] In some embodiments, the absence of downlink coverage enhancement in a cell can be used to indicate that the cell has the capability to support downlink coverage enhancement, but the cell has not implemented the downlink coverage enhancement capability.

[0666] In some embodiments, the cell status of a cell can be determined based on the first indication information in the following manner:

[0667] If the first indication information indicates that the cell allows NTN connections, or if the first indication information is a third preset value, then the terminal device supporting NTN access can determine that the cell status is non-prohibited. At this time, the terminal device can camp on or access the cell.

[0668] If the first indication information indicates that the cell prohibits NTN connection, or if the first indication information is a fourth preset value, then the terminal device that supports NTN access can further determine the cell status based on the device type.

[0669] In some embodiments, the second indication information may only apply to terminal devices that support NTN access. If a terminal device does not support NTN access, the terminal device may ignore the second indication information.

[0670] In some embodiments, the second indication information may be applicable only to terminal devices of the first device type, or the second indication information may be applicable only to terminal devices of both the first and second device types.

[0671] In some embodiments, where the second indication information applies only to terminal devices of the first device type, terminal devices of other device types besides the first device type may ignore the second indication information. For example, terminal devices of the second and third device types may ignore the second indication information.

[0672] In some embodiments, where the second indication information applies only to terminal devices of the first and second device types, terminal devices of other device types may ignore the second indication information. For example, terminal devices of the third device type may ignore the second indication information.

[0673] In the access control method provided in this application, the terminal device can interact with the network device to obtain first indication information and second indication information, and determine the cell status based on the first or second indication information. This cell status can be used by the terminal device to determine whether it is allowed to access the cell. By determining the cell status, the terminal device can obtain normal services in the cell when the cell status is non-prohibited, and can also obtain limited services in the cell when the cell status is prohibited and certain preset conditions are met. This avoids the network device rejecting the terminal device's service requests, which helps to shorten the latency of the terminal device accessing the network device, improves the user experience, and reduces the need for repeated access operations, thus reducing resource consumption of the terminal device.

[0674] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, that is, when the terminal device is a terminal device of the second device type, the interaction process between the terminal device and the network device can be as follows: Figure 4 As shown in the example, Figure 4 This is a second exemplary schematic diagram illustrating an access control method according to an embodiment of this application.

[0675] like Figure 4 As shown, the access control method includes the following steps:

[0676] S401. The network device sends the first and second indication information of the cell to the terminal device.

[0677] The device type of the terminal device is the second device type, that is, the terminal device does not support downlink coverage enhancement and supports obtaining second indication information.

[0678] It should be noted that the specific execution process of step S401 can be referred to the specific execution process of step S301, and will not be repeated here.

[0679] S402. The terminal device determines the cell status based on the first instruction information.

[0680] In some embodiments, when the cell status of a cell is determined based on the first indication information, the terminal device may ignore the second indication information, or the terminal device may ignore the cell access prohibition identifier in the MIB obtained by the terminal device.

[0681] The cell access prohibition flag can be cellBarred in the MIB.

[0682] In some embodiments, if the first indication information is used to indicate that the cell allows NTN connections, then the terminal device of the second device type can determine that the cell state is non-prohibited; if the first indication information is used to indicate that the cell prohibits NTN connections, then the terminal device of the second device type can determine that the cell state is prohibited.

[0683] If the cell status is determined to be prohibited based on the first indication information, the method may further include step S403 as shown below.

[0684] S403. When the terminal device determines that the cell status is prohibited and meets the first preset judgment condition, it determines that the cell is an acceptable cell.

[0685] The first preset judgment condition may include at least one of the following conditions:

[0686] The first instruction message indicates that the cell is prohibited from NTN connections;

[0687] The terminal device receives the second instruction information;

[0688] The second instruction indicates that the cell supports enhanced downlink coverage;

[0689] The second instruction message indicates that the cell has implemented downlink coverage enhancement;

[0690] The cell supports enhanced downlink coverage;

[0691] The cell has implemented enhanced downlink coverage.

[0692] The criteria for selecting a residential community have been met.

[0693] The cell allows terminal devices to carry out emergency services even when the terminal device determines that the cell status is prohibited.

[0694] The community supports providing emergency bearer services for terminal devices in a restricted service state.

[0695] It should be noted that the relevant content regarding "the terminal device receives the second instruction information," "the cell supports downlink coverage enhancement," and "the cell has implemented downlink coverage enhancement" in this step can be found in [the relevant documentation]. Figure 3 The details regarding the terminal device receiving the second instruction information, the cell supporting downlink coverage enhancement, and the cell performing downlink coverage enhancement in the embodiment will not be elaborated here.

[0696] In some embodiments, an acceptable cell may be used to provide restricted services to terminal devices, such as initiating emergency calls, receiving Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) notifications.

[0697] In some embodiments, cell selection criteria can be used in the cell selection and cell reselection process of the terminal device.

[0698] In some embodiments, the cell selection criterion can be the S criterion.

[0699] In some embodiments, the cell selection criterion can be the R criterion.

[0700] In some embodiments, the network device may send a third indication information to the terminal device, which may be used to indicate that the cell allows the terminal device to perform emergency bearer services if the terminal device determines that the cell status is prohibited.

[0701] In some embodiments, the third instruction message may be represented as “barringExemptEmergencyCall”.

[0702] In some embodiments, 1 bit can be used to represent the third indication information. If the bit exists and its value is a fifth preset value, the third indication information is used to indicate that the cell allows the terminal device to perform emergency bearer services when the terminal device determines that the cell status is prohibited; if the bit does not exist or its value is a sixth preset value, the third indication information can be used to indicate that the cell does not allow the terminal device to perform emergency bearer services when the terminal device determines that the cell status is prohibited.

[0703] For example, the "bit exists" means that the terminal device can obtain the third indication information.

[0704] For example, the fifth preset value can be, but is not limited to, any of the following: "allow", "true" or "1".

[0705] For example, the sixth preset value can be, but is not limited to, any of the following: "prohibited", "not allowed", "false" or "0".

[0706] In some embodiments, the network device may send a fourth indication message to the terminal device, which may be used to indicate that the cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0707] In some embodiments, the fourth indication information may be represented as "ims-EmergencySupport".

[0708] It is understandable that when a terminal device is in a restricted service state, the terminal device's operations may include: initiating emergency calls and receiving ETWS and CMAS notifications.

[0709] It should be noted that the access control method involved in the embodiments of this application may include at least one of steps S401 to S403.

[0710] In some embodiments, step S403 is optional and may be omitted or substituted in different embodiments. For example, steps S401 and S402 may be implemented as independent embodiments; steps S401 to S403 may be implemented as independent embodiments.

[0711] In the access control method of this application embodiment, after obtaining the first indication information and the second indication information, the terminal device can determine the cell status of the cell based on the first indication information. By determining the cell status, the terminal device can obtain normal service in the cell if the cell status is determined to be non-prohibited. For cells that support or implement downlink coverage enhancement, if the terminal device of the second device type determines that the cell status is prohibited and meets the first preset judgment condition, the terminal device of the second device type can determine that the cell is an acceptable cell. In this case, the terminal device of the second device type can still camp in the cell to obtain restricted services, avoiding network devices rejecting the restricted services initiated by the terminal device. This ensures the normal execution of the restricted services of the terminal device of the second device type, which helps to shorten the reception time of the terminal device of the second device type receiving or initiating restricted services and improves the user experience of the terminal device.

[0712] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, that is, when the terminal device is a terminal device of the second device type, the interaction process between the terminal device and the network device can also be as follows: Figure 5 As shown in the example, Figure 5 This is a third exemplary schematic diagram illustrating an access control method according to an embodiment of this application.

[0713] like Figure 5 As shown, the access control method may include the following steps:

[0714] S501, the network device sends the first and second indication information of the cell to the terminal device.

[0715] It should be noted that the specific execution process of step S501 can be referred to the specific execution process of step S301, and will not be repeated here.

[0716] S502. The terminal device determines the cell status based on the second instruction information.

[0717] In some embodiments, when the cell status of a cell is determined based on the second indication information, the terminal device may ignore the first indication information, or the terminal device may ignore the cell access prohibition identifier in the Master Information Block (MIB) obtained by the terminal device.

[0718] In some embodiments, if the second indication information indicates that the cell supports downlink coverage enhancement or the cell has performed downlink coverage enhancement, the terminal device of the second device type can determine that the cell state is non-prohibited; if the second indication information indicates that the cell does not support downlink coverage enhancement or the cell has not performed downlink coverage enhancement, the terminal device of the second device type can determine that the cell state is prohibited.

[0719] S503. When the terminal device determines that the cell status is non-prohibited and meets the second preset judgment condition, it determines the cell as a candidate cell in the cell selection and cell reselection process.

[0720] In some embodiments, the second preset judgment condition may include: the cell is not reserved by the operator, the cell is not used for other purposes, and the cell is not used for future purposes.

[0721] In some embodiments, "not reserved for the operator" means that there are no resources reserved for the operator within the cell.

[0722] In some embodiments, "not used for other purposes" means that the resources within the cell can be used for the designated communication service and will not be occupied by other communication services besides the designated communication service.

[0723] In some embodiments, "not intended for future use" means that there are no resources within the community reserved for possible future needs or uses.

[0724] It should be noted that the access control method involved in the embodiments of this application may include at least one of steps S501 to S503.

[0725] In some embodiments, step S503 is optional and may be omitted or substituted in different embodiments. For example, steps S501 and S502 may be implemented as independent embodiments; steps S502 and S503 may be implemented as independent embodiments; steps S501 to S503 may be implemented as independent embodiments.

[0726] In the access control method of this application embodiment, for a cell that supports or implements downlink coverage enhancement, when the terminal device of the second device type determines that the cell status is non-prohibited, it can also determine whether the cell is a candidate cell in the cell selection and cell reselection process based on the second preset judgment condition, so that the terminal device can select the cell in the subsequent cell selection and cell reselection process.

[0727] In some embodiments, where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, that is, where the terminal device is a terminal device of the second device type, the terminal device may also perform the following: Figure 6 The access control method shown in the embodiment, Figure 6 This is a fourth exemplary schematic diagram illustrating an access control method according to an embodiment of this application.

[0728] like Figure 6 As shown, the access control method may include the following steps:

[0729] S601. Determine whether the cell is a suitable cell based on the first preset condition and the second preset condition.

[0730] In some embodiments, if a first preset condition and a second preset condition are met, the cell is determined to be a suitable cell; and / or, if the first preset condition and / or the second preset condition are not met, the cell is determined to be an unsuitable cell.

[0731] In some embodiments, when the device type of the terminal device is a first device type and a second device type, the first preset condition may include any one of the following:

[0732] The terminal device receives the second instruction information and the terminal device supports downlink coverage enhancement;

[0733] The terminal device receives a second indication message, which indicates that the cell supports downlink coverage enhancement and that the terminal device supports downlink coverage enhancement.

[0734] The terminal device receives the second indication information, which indicates that the cell has performed downlink coverage enhancement and that the terminal device supports downlink coverage enhancement.

[0735] The cell supports enhanced downlink coverage and the terminal device supports enhanced downlink coverage;

[0736] The cell has implemented downlink coverage enhancement and the terminal equipment supports downlink coverage enhancement.

[0737] In some embodiments, when the device type of the terminal device is a third device type, the first preset condition may include any one of the following:

[0738] The terminal device did not receive the second instruction information;

[0739] The cell does not support downlink coverage enhancement;

[0740] The cell has not implemented downlink coverage enhancement.

[0741] In some embodiments, the first preset condition may further include any one of the following conditions:

[0742] Condition 1: The second indication information does not exist, or the second indication information exists and the terminal device supports downlink coverage enhancement;

[0743] Condition 2: The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0744] Condition 3: The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell has performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0745] Condition 4: The cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0746] Condition 5: The cell has not implemented downlink coverage enhancement, or the cell has implemented downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0747] In some embodiments, the second preset condition may include:

[0748] The preset network includes at least one network for cell broadcasting. The preset network can be at least one of the following: a network selected by the terminal device, a network registered by the terminal device, a network equivalent to the network selected by the terminal device, or a network equivalent to the network registered by the terminal device.

[0749] Meets the community selection criteria;

[0750] The community's status is non-prohibited;

[0751] At least one tracking area (TA) broadcast by a cell meets the following conditions: the roaming no-tracking area list does not include the TA, and the default network includes the network to which the TA belongs.

[0752] In some embodiments, the network selected by the terminal may include a PLMN or a Standalone Non-Public Network (SNPN), the network registered by the terminal may include a PLMN or an SNPN, and the network equivalent to the network selected by the terminal device may also include a PLMN or an SNPN.

[0753] In some embodiments, the roaming no-tracking-area list may include multiple tracking areas, which are tracking areas that the terminal device is not allowed to enter while roaming.

[0754] In some embodiments, the roaming no-tracking area list may be pre-stored by the terminal device, or it may be configured for the terminal device by the core network corresponding to the terminal device.

[0755] It is understood that at least one network in a cell broadcast may include the network to which the TA belongs, and the network to which the TA belongs may include a PLMN or SNPN.

[0756] It should be noted that the related content in this step, such as "the terminal device receives the second indication information," "the second indication information does not exist," "the second indication information exists," "the cell supports downlink coverage enhancement," and "the cell has performed downlink coverage enhancement," can be referred to as [the relevant information]. Figure 3 In the embodiment, the relevant content of "the terminal device receives the second indication information", "the second indication information does not exist", "the second indication information exists", "the cell supports downlink coverage enhancement" and "the cell has performed downlink coverage enhancement" are described. The content of the "cell selection criteria" in this step can be referred to the content of the "cell selection criteria" in step S403, and will not be repeated here.

[0757] S602. If it is determined that the cell is not a suitable cell and the third preset judgment condition is met, the cell is determined to be an acceptable cell.

[0758] In some embodiments, the third preset judgment condition may include: the cell status of the cell is non-prohibited, and the cell selection criteria are met.

[0759] The access control method provided in this application allows a terminal device to quickly determine whether a cell is a suitable cell based on a first preset condition and a second preset condition. If the cell is determined to be a suitable cell, the terminal device can obtain normal service in that cell. If the cell is determined to be unsuitable but meets a third preset judgment condition, the terminal device can determine that the cell is an acceptable cell. This ensures that a terminal device of the second device type can reside in that cell and obtain limited service, avoiding network devices rejecting the terminal device's service requests. This helps to shorten the latency of the terminal device accessing the network device, improve the user experience of the terminal device, and reduce the terminal device's repeated access operations, thus reducing resource consumption of the terminal device.

[0760] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, that is, when the terminal device is a terminal device of the second device type, the interaction process between the terminal device and the network device can be as follows: Figure 7 As shown in the example, Figure 7 This is the fifth exemplary schematic diagram of an access control method according to an embodiment of this application.

[0761] like Figure 7 As shown, the access control method includes the following steps:

[0762] S701, the network device sends the first and second indication information of the cell to the terminal device.

[0763] The device type of the terminal device is the second device type, that is, the terminal device does not support downlink coverage enhancement and supports obtaining second indication information.

[0764] It should be noted that the specific execution process of step S701 can be referred to the specific execution process of step S301, and will not be repeated here.

[0765] S702. The terminal device determines the cell status based on the second instruction information.

[0766] It should be noted that the specific execution process of step S702 can be referred to the specific execution process of step S502, and will not be repeated here.

[0767] S703. When the terminal device determines that the cell status is prohibited and meets the fourth preset judgment condition, it determines that the cell is an acceptable cell.

[0768] In some embodiments, the fourth preset judgment condition may include at least one of the following:

[0769] The terminal device receives the second instruction information;

[0770] The second instruction indicates that the cell supports enhanced downlink coverage;

[0771] The second instruction message indicates that the cell has implemented downlink coverage enhancement;

[0772] The cell supports enhanced downlink coverage;

[0773] The community has implemented enhanced downlink coverage.

[0774] It should be noted that the relevant content regarding "the terminal device receives the second instruction information," "the cell supports downlink coverage enhancement," and "the cell has implemented downlink coverage enhancement" in this step can be found in [the relevant documentation]. Figure 3 The details regarding the terminal device receiving the second instruction information, the cell supporting downlink coverage enhancement, and the cell performing downlink coverage enhancement in the embodiment will not be elaborated here.

[0775] It should be noted that the access control method involved in the embodiments of this application may include at least one of steps S701 to S703.

[0776] In some embodiments, step S703 is optional and may be omitted or substituted in different embodiments. For example, steps S701 and S702 may be implemented as independent embodiments; steps S701 to S703 may be implemented as independent embodiments; steps S702 and S703 may be implemented as independent embodiments.

[0777] In the access control method of this application embodiment, after obtaining the first indication information and the second indication information, the terminal device of the second device type can determine the cell status of the cell according to the second indication information. By determining the cell status, if the cell status is determined to be non-prohibited, the terminal device can obtain normal service in that cell. Furthermore, if the cell status is prohibited and the third preset judgment condition is met, the terminal device can also determine that cell as an acceptable cell, so that the terminal device can obtain restricted service in that cell. This avoids the network device rejecting the terminal device's service request, which helps to shorten the latency of the terminal device accessing the network device, improve the user experience of the terminal device, and reduce the terminal device's repeated access operations, thus reducing the resource consumption of the terminal device.

[0778] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, that is, when the terminal device is a terminal device of the second device type, the interaction process between the terminal device and the network device can also be as follows: Figure 8 As shown in the example, Figure 8 This is a sixth exemplary schematic diagram illustrating an access control method according to an embodiment of this application.

[0779] like Figure 8 As shown, the access control method may include the following steps:

[0780] S801, the network device sends the first and second indication information of the cell to the terminal device.

[0781] It should be noted that the specific execution process of step S801 can be referred to the specific execution process of step 301, and will not be repeated here.

[0782] S802. When the third preset condition is met, the terminal device determines the cell status of the cell according to the first instruction information.

[0783] It should be noted that the specific execution process of "determining the cell status based on the first instruction information" in this step can be referred to the specific execution process of "determining the cell status based on the first instruction information" in step S402, and will not be repeated here.

[0784] In some embodiments, the third preset condition may include at least one of the following:

[0785] The terminal device detected the cell for the first time;

[0786] The terminal device determines the cell status for the first time;

[0787] The number of times the terminal device continuously detects a cell is less than or equal to the first threshold;

[0788] Within a first preset time period, the number of times the terminal device continuously detects cells is less than or equal to a second threshold.

[0789] The number of times the terminal device continuously determines the cell status is less than or equal to the third threshold;

[0790] Within the second preset time period, the number of times the terminal device continuously determines the cell status of the cell is less than or equal to the fourth threshold.

[0791] The time interval between the current moment and the first moment is less than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell.

[0792] The time interval between the current moment and the second moment is less than or equal to the second time threshold, where the second moment is the moment when the terminal device first determines the cell status.

[0793] The duration of the terminal device in the arbitrary cell selection state is less than or equal to the third time threshold. The duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0794] The network device instructs the terminal device to determine the cell status based on the first instruction information.

[0795] In some embodiments, the cell first detected by the terminal device may be referred to as the "first cell". The first cell may satisfy at least one of the following: the cell supports downlink coverage enhancement, the cell has performed downlink coverage enhancement, and the cell's second indication information exists.

[0796] In some embodiments, "the terminal device determines the cell state of the cell for the first time" can also be described as "the terminal device determines the cell state of the first cell for the first time".

[0797] In some embodiments, the terminal device may determine the cell status of a cell for the first time by: the terminal device determining the cell status of the cell based on first indication information.

[0798] In some embodiments, the number of times a terminal device continuously detects a cell may include the number of times a first cell is continuously detected by the terminal device.

[0799] In some embodiments, any one of the following parameters—first threshold, first preset duration, second threshold, third threshold, second preset duration, fourth threshold, first time threshold, second time threshold, and third time threshold—can be configured by the network device or agreed upon by the protocol.

[0800] In some embodiments, the first threshold, second threshold, third threshold, and fourth threshold may be the same or different. Optionally, the first threshold and second threshold may be the same, and the third threshold and fourth threshold may be the same; or, the first threshold, second threshold, third threshold, and fourth threshold may be the same.

[0801] In some embodiments, the first preset duration and the second preset duration may be the same or different.

[0802] In some embodiments, at least two of the first time threshold, second time threshold, and third time threshold may be the same or different.

[0803] In some embodiments, if the protocol specifies multiple parameters, or the network device configures multiple parameters, the terminal device can select one parameter from these multiple parameters based on certain rules. For example, the terminal device can randomly select one parameter from multiple parameters.

[0804] For example, the network device is configured with threshold 1, threshold 2, and threshold 3, all of which can be applied to the determination scenarios of the "first threshold," "second threshold," "third threshold," and "fourth threshold" in the aforementioned third preset condition. In the determination scenarios of the "first threshold," "second threshold," "third threshold," and "fourth threshold," the terminal device can randomly select one of threshold 1, threshold 2, and threshold 3 to determine the threshold.

[0805] In some embodiments, different probabilities can be configured or agreed upon for each parameter, and the terminal device can select parameters with probabilities greater than a certain value.

[0806] For example, the protocol specifies threshold 1, threshold 2, and threshold 3, and configures the use cases and probabilities for each threshold, as shown in Table 1:

[0807] Table 1

[0808]

[0809] In the scenario of determining the "first threshold" in the third preset condition, assuming that a threshold with a probability greater than 0.5 needs to be selected, the terminal device can use threshold 1 in the scenario of determining the "first threshold".

[0810] For example, if the first threshold is 5, and the terminal device detects the first cell in the first to third detections, the number of times the terminal device has continuously detected the first cell is recorded as 3. If the second cell is detected in the fourth detection, the number of times the terminal device has continuously detected the first cell can be reset to zero so that it can start counting again next time. If the first cell is detected in the fifth detection, the terminal device needs to start counting again from 1 when recording the number of times the first cell has been continuously detected, that is, the number of times the terminal device has continuously detected the first cell is recorded as 1.

[0811] In some embodiments, the second cell may satisfy at least one of the following: the cell does not support downlink coverage enhancement, the cell has not performed downlink coverage enhancement, or the cell's second indication information does not exist.

[0812] In some embodiments, the number of times the terminal device continuously detects cells within a first preset time period may include: the number of times the terminal device continuously detects the first cell.

[0813] For example, the first preset duration can be 10 minutes, and the second threshold can be 5.

[0814] In one example, timing begins when the terminal device first detects a first cell. If the terminal device detects a second cell after detecting three first cells consecutively, the timing and counting need to be restarted the next time a first cell is detected.

[0815] In some embodiments, the number of times the terminal device continuously determines the cell state of a cell may include: the number of times the terminal device continuously determines the cell state of a first cell.

[0816] In some embodiments, the terminal device continuously determines the cell status of the first cell, which may include: the terminal device continuously determines the cell status of the first cell based on first indication information.

[0817] In some embodiments, the multiple first cells continuously determined by the terminal device may be the same cell or different cells.

[0818] Case 1: Assume that the terminal device determines multiple first cells that are all the same cell.

[0819] For example, assuming the terminal device consecutively identifies multiple first cells, all of which are cell 1, at time 1, the terminal device first determines the cell state of cell 1 as prohibited based on the first indication information. Within a preset time period after time 1 (e.g., 300 seconds), cell 1 is excluded as a candidate cell for cell selection or cell reselection. The number of times the terminal device determines the cell state of the first cell can be recorded as 1. At time 2, the terminal device again determines the cell state of cell 1 based on the first indication information. The number of times the terminal device determines the cell state of the first cell can be recorded as 2. If at time 2, the terminal device determines the cell state of a cell other than cell 1, the number of times the terminal device determines the cell state of the first cell will not increase.

[0820] In this case, the terminal device can adopt a cell-level recording method, that is, the terminal device records the number of times each cell (e.g., cell 1 or cell 2) is continuously determined.

[0821] Scenario 2: Assume that the terminal device continuously identifies multiple first cells as different cells.

[0822] For example, the first cell includes cell 1 and cell 2, and the second cell includes cell 3. At time 1, the terminal device first determines that the cell state of cell 1 is prohibited based on the first indication information. Within a preset time period (e.g., 300 seconds) after time 1, cell 1 is excluded as a candidate cell for cell selection or cell reselection. The number of times the terminal device determines the cell state of the first cell can be recorded as 1. At time 2, the terminal device determines the cell state of cell 2 based on the first indication information. The number of times the terminal device determines the cell state of the first cell can be incremented by 1, recorded as 2. If at time 3, the terminal device determines the cell state of cell 3, the number of times the terminal device determines the cell state of the first cell will not increase and will remain 1.

[0823] In this case, the terminal device can adopt a cell-level recording method according to a certain type of cell, that is, the terminal device records the number of consecutively determined cells of each type (e.g., the first cell and the second cell).

[0824] In some embodiments, the terminal device may be configured with a first timer, the duration of which may be a first time threshold.

[0825] In some embodiments, the terminal device starts a first timer from a first moment. If the first timer is running normally, it can be determined that the time between the current moment and the first moment is less than or equal to a first time threshold; if the first timer times out, it can be determined that the time between the current moment and the first moment is greater than the first time threshold.

[0826] In some embodiments, during the operation of the first timer, the terminal device stops running the first timer if any of the following conditions are met:

[0827] The terminal device detected a second cell;

[0828] The terminal device performed a cell selection operation;

[0829] The terminal device has performed a cell reselection operation;

[0830] The terminal device's device state is switched to RRC connected state.

[0831] In some embodiments, the terminal device may be configured with a second timer, the duration of which may be a second time threshold.

[0832] In some embodiments, the terminal device starts a second timer from a second time point. If the second timer is operating normally, it can be determined that the duration between the current time point and the second time point is less than or equal to a second time threshold; if the second timer times out, it can be determined that the duration between the current time point and the second time point is greater than the second time threshold.

[0833] In some embodiments, during the operation of the second timer, the terminal device stops running the second timer if any of the following conditions are met:

[0834] The terminal device determines the cell status of the second cell;

[0835] The terminal device performed a cell selection operation;

[0836] The terminal device has performed a cell reselection operation;

[0837] The terminal device's device state is switched to RRC connected state.

[0838] In some embodiments, the terminal device may be configured with a third timer, the duration of which may be a third time threshold.

[0839] In some embodiments, the terminal device starts a third timer from the moment it enters the arbitrary cell selection state. If the third timer is running normally, it can be determined that the duration of the terminal device in the arbitrary cell selection state is less than or equal to a third time threshold; if the third timer times out, it can be determined that the duration of the terminal device in the arbitrary cell selection state is greater than the third time threshold.

[0840] In some embodiments, during the operation of the third timer, the terminal device stops running the third timer if any of the following conditions are met:

[0841] The terminal device leaves any cell selection state, or the terminal device enters normal camping state, or the terminal device camps in any cell state.

[0842] The terminal device performed a cell selection operation;

[0843] The terminal device has performed a cell reselection operation;

[0844] The terminal device's device state is switched to RRC connected state.

[0845] In some embodiments, the network device may send a fifth instruction message to the terminal device.

[0846] In some embodiments, the fifth indication information may be used to indicate that the network device instructs the terminal device to determine the cell status based on the first indication information.

[0847] In some embodiments, the fifth indication information may be used to indicate that: the network device does not instruct the terminal device to determine the cell state based on the first indication information; or, the network device instructs the terminal device to determine the cell state based on the second indication information.

[0848] In some embodiments, 1 bit can be used to represent the fifth indication information.

[0849] In one example, if the bit exists and its value is a seventh preset value, the fifth indication information can be used to indicate that the network device instructs the terminal device to determine the cell status based on the first indication information; if the bit does not exist or its value is an eighth preset value, the fifth indication information can be used to indicate that the network device does not instruct the terminal device to determine the cell status based on the first indication information; or, the network device instructs the terminal device to determine the cell status based on the second indication information.

[0850] For example, the "bit exists" means that the terminal device can obtain the fifth indication information.

[0851] For example, the seventh preset value can be, but is not limited to, any of the following: "first indication information", "true" or "1".

[0852] For example, the eighth preset value can be, but is not limited to, any of the following: "second instruction information", "false" or "0".

[0853] S803. When the terminal device determines that the cell status is prohibited and meets the first preset judgment condition, it determines that the cell is an acceptable cell.

[0854] It should be noted that the relevant content of the "first preset judgment condition" in this step can be referred to the relevant content of the "first preset judgment condition" in step S403, and will not be repeated here.

[0855] In some embodiments, if the cell status is determined to be prohibited and the first preset judgment condition is not met, the terminal device may determine that the cell is not an acceptable cell.

[0856] S804. Under the condition that the fourth preset condition is met, the terminal device determines the cell status of the cell according to the second instruction information.

[0857] In some embodiments, the fourth preset condition may include at least one of the following:

[0858] This is not the first time the terminal device has detected the cell;

[0859] The terminal device is not determining the cell status of the cell for the first time;

[0860] The number of times the terminal device continuously detects a cell is greater than or equal to the first threshold;

[0861] Within a first preset time period, the number of times the terminal device continuously detects cells is greater than or equal to a second threshold.

[0862] The number of times the terminal device continuously determines the cell status of the cell is greater than or equal to the third threshold;

[0863] Within the second preset time period, the number of times the terminal device continuously determines the cell status of the cell is greater than or equal to the fourth threshold.

[0864] The time interval between the current moment and the first moment is greater than or equal to the first moment threshold, where the first moment is the moment when the terminal device first detects the cell;

[0865] The time interval between the current time and the second time is greater than or equal to the second time threshold, where the second time is the moment when the terminal device first determines the cell status.

[0866] The duration of the terminal device in the arbitrary cell selection state is greater than or equal to the third time threshold. The duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0867] The network device instructs the terminal device to determine the cell status based on the second instruction information.

[0868] In some embodiments, the network device may send a sixth instruction message to the terminal device.

[0869] In some embodiments, the sixth indication information may be used to indicate that the network device instructs the terminal device to determine the cell status based on the second indication information.

[0870] In some embodiments, the sixth indication information may be used to indicate that: the network device does not instruct the terminal device to determine the cell state based on the second indication information; or, the network device instructs the terminal device to determine the cell state based on the first indication information.

[0871] In some embodiments, 1 bit can be used to represent the sixth indication information.

[0872] In one example, if the bit exists and its value is a ninth preset value, the sixth indication information can be used to indicate that the network device instructs the terminal device to determine the cell status based on the second indication information; if the bit does not exist or its value is a tenth preset value, the sixth indication information can be used to indicate that the network device does not instruct the terminal device to determine the cell status based on the second indication information; or, the network device instructs the terminal device to determine the cell status based on the first indication information.

[0873] For example, the "bit exists" means that the terminal device can obtain the sixth indication information.

[0874] For example, the ninth preset value can be, but is not limited to, any of the following: "second instruction information", "true" or "1".

[0875] For example, the tenth preset value can be, but is not limited to, any of the following: "first instruction information", "false" or "0".

[0876] It should be noted that the specific execution process of "determining the cell status based on the second instruction information" in this step can be referred to the specific execution process of "determining the cell status based on the second instruction information" in step S502, and will not be repeated here.

[0877] S805. When the terminal device determines that the cell status is prohibited and meets the fourth preset judgment condition, it determines that the cell is an acceptable cell.

[0878] It should be noted that the relevant content of the "fourth preset judgment condition" in this step can be referred to the relevant content of the "fourth preset judgment condition" in step S703, and will not be repeated here.

[0879] In some embodiments, if the cell status is determined to be prohibited and the third preset judgment condition is not met, the terminal device may determine that the cell is not an acceptable cell.

[0880] It should be noted that the access control method involved in the embodiments of this application may include at least one of steps S801 to S805.

[0881] In some embodiments, steps S802, S803, S804, and S805 are optional and can be omitted or substituted in different embodiments. For example, steps S801 and S802 can be implemented as independent embodiments; steps S801 to S803 can be implemented as independent embodiments; steps S801 and S804 can be implemented as independent embodiments; steps S804 and S805 can be implemented as independent embodiments; steps S801 to S805 can be implemented as independent embodiments.

[0882] In the access control method of this application embodiment, when the third preset condition is met, the terminal device of the second device type can determine the cell status of the cell according to the first indication information. When the cell status is determined to be non-prohibited, the terminal device can obtain normal service in the cell. When the cell status is determined to be prohibited and the first preset judgment condition is met, the terminal device can also determine the cell as an acceptable cell, so that the terminal device can obtain restricted service in the cell, avoiding the network device from rejecting the terminal device's service request. This helps to shorten the latency of the terminal device accessing the network device, improve the user experience of the terminal device, and reduce the terminal device from repeatedly initiating access operations, which helps to reduce the resource consumption of the terminal device.

[0883] Under the condition of the fourth preset condition, the terminal device of the second device type can determine the cell status of the cell according to the second indication information. If the cell status is determined to be non-prohibited, the terminal device can obtain normal service in the cell. If the cell status is determined to be prohibited and the third preset judgment condition is met, the terminal device can also determine the cell as an acceptable cell, so that the terminal device can obtain restricted service in the cell. This avoids the network device rejecting the terminal device's service request, which helps to shorten the latency of the terminal device accessing the network device, improve the user experience of the terminal device, and reduce the terminal device's repeated access operations, which helps to reduce the resource consumption of the terminal device.

[0884] It should be noted that in some embodiments, terms such as "determine", "consider", and "judge" can be used interchangeably. For example, in some embodiments, "the terminal device determines that the cell is a suitable cell" can also be described as "the terminal device considers the cell to be a suitable cell" or "the terminal device judges the cell to be a suitable cell".

[0885] It should be noted that terms such as "operation", "behavior", and "action" can be used interchangeably. For example, in some embodiments, "operation of the terminal device" can also be referred to as "operation of the terminal device" or "action of the terminal device".

[0886] In some embodiments, when the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information, that is, when the terminal device is a third type of terminal device, the interaction process between the terminal device and the network device can also be as follows: Figure 9 As shown in the example, Figure 9 This is the seventh exemplary schematic diagram of an access control method according to an embodiment of this application.

[0887] like Figure 9 As shown, the access control method may include the following steps:

[0888] S901, the network device sends the first and second indication information of the cell to the terminal device.

[0889] It should be noted that the specific execution process of step S901 can be referred to the specific execution process of step S301, and will not be repeated here.

[0890] S902, The terminal device determines the cell status based on the first instruction information.

[0891] The community status is either prohibited or not prohibited.

[0892] In some embodiments, if the first indication information is used to indicate that the cell allows NTN connections, the terminal device of the third device type can determine that the cell state is non-prohibited; if the first indication information is used to indicate that the cell prohibits NTN connections, the terminal device of the third device type can determine that the cell state is prohibited.

[0893] In some embodiments, when the cell status of a cell is determined based on the first indication information, the terminal device of the third device type may ignore the second indication information, or the terminal device of the third device type may ignore the cell access prohibition identifier in the acquired MIB.

[0894] In the access control method provided in this application embodiment, by determining the cell state of the cell, the terminal device of the third device type can avoid camping on or accessing a cell that supports downlink coverage enhancement, or can avoid camping on or accessing a cell that has performed downlink coverage enhancement, so that the third device type does not need to send access requests to the cell that supports downlink coverage enhancement or the cell that has performed downlink coverage enhancement, which is beneficial to reduce the resources of the terminal device of the third device type and reduce the power consumption of the terminal device of the third device type.

[0895] In some embodiments, when the terminal device supports downlink coverage enhancement, that is, when the terminal device is a terminal device of the first device type, the interaction process between the terminal device and the network device can also be as follows: Figure 10 As shown in the example, Figure 10 This is an eighth exemplary schematic diagram illustrating an access control method according to an embodiment of this application.

[0896] like Figure 10 As shown, the access control method may include the following steps:

[0897] S1001, The network device sends the first indication information and the second indication information of the cell to the terminal device.

[0898] It should be noted that the specific execution process of step S1001 can be referred to the specific execution process of step S301, and will not be repeated here.

[0899] S1002. The terminal device determines the cell status based on the second instruction information.

[0900] In some embodiments, when the cell status of a cell is determined based on the second indication information, a terminal device of the first device type may ignore the first indication information, or a terminal device of the first device type may ignore the cell access prohibition identifier in the acquired MIB.

[0901] In some embodiments, if the second indication information indicates that the cell supports downlink coverage enhancement or the cell has performed downlink coverage enhancement, the terminal device of the first device type can determine that the cell state is non-prohibited; if the second indication information indicates that the cell does not support downlink coverage enhancement or the cell has not performed downlink coverage enhancement, the terminal device of the first device type can determine that the cell state is prohibited.

[0902] In the access control method provided in this application embodiment, by determining the cell status of the cell, the terminal device of the first device type can camp on or access a cell that supports downlink coverage enhancement, or can camp on or access a cell that has performed downlink coverage enhancement, so as to ensure that the terminal device of the first device type can obtain communication services normally in the cell, which is conducive to shortening the latency of the terminal device accessing the network device and improving the user experience of the terminal device.

[0903] Figure 11 This is one of the structural schematic diagrams of a communication device provided in an embodiment of this application. The communication device can be implemented through software and / or hardware. For example... Figure 11 As shown, the communication device 1100 may include:

[0904] The transceiver module 1101 is used to acquire first indication information and second indication information of a cell. The first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate downlink coverage enhancement information of the cell.

[0905] The processing module 1102 is used to determine the cell status of the cell based on the first indication information or the second indication information. The cell status includes a prohibited state or a non-prohibited state. The cell status is used by the terminal device to determine whether it is allowed to access the cell.

[0906] The communication device 1100 provided in this application embodiment executes the method steps executed by the terminal device in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0907] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[0908] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0909] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[0910] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[0911] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[0912] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[0913] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[0914] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[0915] In some embodiments, if the first indication information exists, the second indication information exists; and / or,

[0916] If the second indication information is present, the first indication information is used to instruct the cell to disable NTN connections.

[0917] In some embodiments, the transceiver module 1101 is specifically used for:

[0918] Receive the second instruction information sent by the network device.

[0919] In some embodiments, the second indication information is carried through system information;

[0920] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0921] In some embodiments, the transceiver module 1101 is specifically used for:

[0922] Receive system information sent by a network device, wherein the system information includes the second indication information.

[0923] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[0924] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0925] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0926] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0927] In some embodiments, the processing module 1102 is specifically used for:

[0928] The cell status of the cell is determined based on the device type of the terminal device and the first indication information; or,

[0929] The cell status of the cell is determined based on the device type of the terminal device and the second indication information.

[0930] In some embodiments, the device type includes at least one of the following:

[0931] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[0932] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0933] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[0934] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; the processing module 1102 is specifically used for:

[0935] The cell status of the cell is determined based on the first indication information.

[0936] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module 1102 is further configured to:

[0937] The cell status of the cell is determined based on the second indication information.

[0938] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module 1102 is further configured to:

[0939] If the first preset condition and the second preset condition are met, the cell is determined to be a suitable cell; and / or,

[0940] If the first preset condition and / or the second preset condition are not met, the cell is determined to be an unsuitable cell.

[0941] In some embodiments, the first preset condition includes any one of the following:

[0942] The terminal device receives the second indication information and the terminal device supports downlink coverage enhancement;

[0943] The terminal device receives a second indication message, and the second indication message indicates that the cell supports downlink coverage enhancement, and the terminal device supports downlink coverage enhancement;

[0944] The terminal device receives a second indication message, and the second indication message indicates that the cell has performed downlink coverage enhancement, and that the terminal device supports downlink coverage enhancement;

[0945] The cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0946] The cell has implemented downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0947] In some embodiments, the first preset condition includes any one of the following:

[0948] The second indication information does not exist, or the second indication information exists and the terminal device supports downlink coverage enhancement;

[0949] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0950] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell has performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0951] The cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0952] The cell did not perform downlink coverage enhancement, or the cell performed downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0953] In some embodiments, the second preset condition includes:

[0954] The preset network includes at least one network broadcast by the cell, and the preset network is at least one of the following: a network selected by the terminal device, a network registered by the terminal device, a network equivalent to the network selected by the terminal device, and a network equivalent to the network registered by the terminal device;

[0955] Meets the community selection criteria;

[0956] The cell status is non-prohibited;

[0957] At least one tracking area (TA) broadcast by the cell meets the following conditions: the roaming no-tracking area list does not include the TA, and the preset network includes the network to which the TA belongs.

[0958] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module 1102 is further configured to:

[0959] The cell is determined to be an acceptable cell if at least one of the following conditions is met:

[0960] The second indication information exists;

[0961] The second indication information indicates that the cell supports downlink coverage enhancement;

[0962] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0963] The cell supports enhanced downlink coverage;

[0964] The cell implemented downlink coverage enhancement.

[0965] In some embodiments, when the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module 1102 is further configured to:

[0966] If the third preset condition is met, the cell status of the cell is determined according to the first indication information;

[0967] If the fourth preset condition is met, the cell status of the cell is determined according to the second indication information.

[0968] In some embodiments, the third preset condition includes at least one of the following:

[0969] The terminal device detected the cell for the first time;

[0970] The terminal device determines the cell status of the cell for the first time;

[0971] The number of times the terminal device continuously detects the cell is less than or equal to a first threshold.

[0972] Within a first preset time period, the number of times the terminal device continuously detects the cell is less than or equal to a second threshold.

[0973] The number of times the terminal device continuously determines the cell status of the cell is less than or equal to a third threshold.

[0974] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is less than or equal to a fourth threshold.

[0975] The time interval between the current moment and the first moment is less than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[0976] The time interval between the current moment and the second moment is less than or equal to the second time threshold, where the second moment is the moment when the terminal device first determines the cell status of the cell;

[0977] The duration of the terminal device in the arbitrary cell selection state is less than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[0978] The network device instructs the terminal device to determine the cell status based on the first indication information.

[0979] In some embodiments, the processing module 1102 is further configured to:

[0980] If the cell is determined to be in the prohibited state and at least one of the following conditions is met, the cell is determined to be an acceptable cell:

[0981] The first indication message indicates that the cell prohibits NTN connections;

[0982] The terminal device receives the second instruction information;

[0983] The second indication information indicates that the cell supports downlink coverage enhancement;

[0984] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0985] The cell supports enhanced downlink coverage;

[0986] The cell implemented downlink coverage enhancement;

[0987] The cell selection criteria for the cell are met;

[0988] The cell allows the terminal device to perform emergency bearer services if the terminal device determines that the cell status is prohibited.

[0989] The cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0990] In some embodiments, when the cell state of the cell is determined to be the prohibited state based on the first indication information, the processing module 1102 is further configured to:

[0991] The cell is determined to be an acceptable cell if at least one of the following conditions is met:

[0992] The second indication information indicates that the cell supports downlink coverage enhancement;

[0993] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0994] The cell supports enhanced downlink coverage;

[0995] The cell implemented downlink coverage enhancement;

[0996] The cell selection criteria for the cell are met;

[0997] The cell supports providing emergency bearer services under prohibited conditions;

[0998] The cell supports providing emergency bearer services for terminal devices in a restricted service state.

[0999] In some embodiments, the fourth preset condition includes at least one of the following:

[1000] This is not the first time the terminal device has detected the cell;

[1001] The terminal device is not determining the cell status of the cell for the first time;

[1002] The number of times the terminal device continuously detects the cell is greater than or equal to a first threshold.

[1003] Within a first preset time period, the number of times the terminal device continuously detects the cell is greater than or equal to a second threshold.

[1004] The number of times the terminal device continuously determines the cell status of the cell is greater than or equal to the third threshold.

[1005] Within a second preset time period, the number of times the terminal device continuously determines the cell status of the cell is greater than or equal to a fourth threshold.

[1006] The time interval between the current moment and the first moment is greater than or equal to the first time threshold, where the first moment is the moment when the terminal device first detects the cell;

[1007] The time interval between the current time and the second time is greater than or equal to the second time threshold, where the second time is the moment when the terminal device first determines the cell status of the cell;

[1008] The duration of the terminal device in the arbitrary cell selection state is greater than or equal to the third time threshold, and the duration of the arbitrary cell selection state is the time between the current time and the start time of the terminal device entering the arbitrary cell selection state.

[1009] The network device instructs the terminal device to determine the cell status based on the second instruction information.

[1010] In some embodiments, when the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information, the processing module 1102 is further configured to:

[1011] The cell status of the cell is determined based on the first indication information.

[1012] In some embodiments, where the terminal device supports downlink coverage enhancement, the processing module 1102 is further configured to:

[1013] The cell status of the cell is determined based on the second indication information.

[1014] In some embodiments, the processing module 1102 is further configured to:

[1015] Determine whether the cell supports downlink coverage enhancement; or,

[1016] Determine whether the cell has implemented downlink coverage enhancement.

[1017] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following:

[1018] Supports beam skipping mechanism;

[1019] Supports discontinuous reception DRX mechanism on the network side;

[1020] DRX configuration is provided;

[1021] Supports discontinuous DTX transmission mechanism on the network side;

[1022] DTX configuration is provided;

[1023] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[1024] It provides configuration information for SSB cycle extension;

[1025] or,

[1026] The cell has implemented downlink coverage enhancement, including at least one of the following:

[1027] A beam-hopping mechanism was implemented.

[1028] The discontinuous reception DRX mechanism on the network side was implemented;

[1029] DRX configuration is provided;

[1030] The network-side discontinuous transmission DTX mechanism was executed;

[1031] DTX configuration is provided;

[1032] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[1033] Configuration information for SSB cycle extension is provided.

[1034] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[1035] Beam skipping mechanism is not supported;

[1036] Discontinuous reception DRX mechanism is not supported on the network side;

[1037] DRX configuration not provided;

[1038] Discontinuous DTX transmission mechanism is not supported on the network side.

[1039] DTX configuration not provided;

[1040] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[1041] Configuration information for SSB cycle extension is not provided;

[1042] or,

[1043] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[1044] Beam skipping mechanism not executed;

[1045] The discontinuous reception DRX mechanism on the network side was not implemented;

[1046] DRX configuration not provided;

[1047] The discontinuous transmission DTX mechanism on the network side was not executed;

[1048] DTX configuration not provided;

[1049] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[1050] Configuration information for SSB cycle extension is not provided.

[1051] In some embodiments, the DRX configuration includes at least one of the following:

[1052] DRX configuration corresponding to the beam;

[1053] DRX configuration corresponding to the cell;

[1054] DRX configuration corresponding to the geographic region.

[1055] In some embodiments, the DTX configuration includes at least one of the following:

[1056] DTX configuration corresponding to the beam;

[1057] DTX configuration corresponding to the community;

[1058] DTX configuration corresponding to the geographic region.

[1059] In some embodiments, the transceiver module 1101 is specifically used for:

[1060] Receive the first indication information and the second indication information of the cell sent by the network device.

[1061] In some embodiments, when the cell status of the cell is determined according to the first indication information, the second indication information is ignored; and / or, the cell access prohibition identifier in the master information block (MIB) obtained by the terminal device is ignored.

[1062] In some embodiments, when the cell status of the cell is determined according to the second indication information, the first indication information is ignored; and / or, the cell access prohibition identifier in the Master Information Block (MIB) obtained by the terminal device is ignored.

[1063] Figure 12 This is a second schematic diagram of the communication device provided in an embodiment of this application. The communication device can be implemented through software and / or hardware. For example... Figure 12 As shown, the communication device 1200 may include:

[1064] Transceiver module 1201 is used to send first indication information and second indication information of the cell to the terminal device, wherein the terminal device supports NTN access;

[1065] The first indication information is used to indicate whether the cell allows or disables NTN connections, and the second indication information is used to indicate the downlink coverage enhancement information of the cell.

[1066] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or...

[1067] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[1068] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or...

[1069] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement or not.

[1070] In some embodiments, the second indication information is a first preset value or a second preset value, wherein...

[1071] The first preset value is used to indicate that the cell supports downlink coverage enhancement, or that the cell has performed downlink coverage enhancement;

[1072] The second preset value is used to indicate that the cell does not support downlink coverage enhancement, or that the cell has not performed downlink coverage enhancement.

[1073] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to instruct the cell to disable NTN connections.

[1074] In some embodiments, the transceiver module 1201 is further configured to:

[1075] Send a second instruction message to the terminal device.

[1076] In some embodiments, the second indication information is carried through system information;

[1077] If the system information also includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[1078] In some embodiments, the device type of the terminal device includes at least one of the following:

[1079] The first device type, wherein the terminal device of the first device type supports downlink coverage enhancement;

[1080] The second device type, wherein the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[1081] The third device type is a terminal device that does not support downlink coverage enhancement or the acquisition of the second indication information.

[1082] In some embodiments, the cell supports downlink coverage enhancement including at least one of the following:

[1083] Supports beam skipping mechanism;

[1084] Supports discontinuous reception DRX mechanism on the network side;

[1085] DRX configuration is provided;

[1086] Supports discontinuous DTX transmission mechanism on the network side;

[1087] DTX configuration is provided;

[1088] Supports synchronization signal and physical broadcast channel block (SSB) period extension;

[1089] It provides configuration information for SSB cycle extension;

[1090] or,

[1091] The cell has implemented downlink coverage enhancement, including at least one of the following:

[1092] A beam-hopping mechanism was implemented.

[1093] The discontinuous reception DRX mechanism on the network side was implemented;

[1094] DRX configuration is provided;

[1095] The network-side discontinuous transmission DTX mechanism was executed;

[1096] DTX configuration is provided;

[1097] Synchronization signal and physical broadcast channel block (SSB) periodic extension were performed;

[1098] Configuration information for SSB cycle extension is provided.

[1099] In some embodiments, the cell does not support downlink coverage enhancement, including at least one of the following:

[1100] Beam skipping mechanism is not supported;

[1101] Discontinuous reception DRX mechanism is not supported on the network side;

[1102] DRX configuration not provided;

[1103] Discontinuous DTX transmission mechanism is not supported on the network side.

[1104] DTX configuration not provided;

[1105] Synchronization signal and physical broadcast channel block (SSB) period extension are not supported;

[1106] Configuration information for SSB cycle extension is not provided;

[1107] or,

[1108] The cell that has not implemented downlink coverage enhancement includes at least one of the following:

[1109] Beam skipping mechanism not executed;

[1110] The discontinuous reception DRX mechanism on the network side was not implemented;

[1111] DRX configuration not provided;

[1112] The discontinuous transmission DTX mechanism on the network side was not executed;

[1113] DTX configuration not provided;

[1114] Synchronization signal and physical broadcast channel block (SSB) periodic extension were not performed;

[1115] Configuration information for SSB cycle extension is not provided.

[1116] In some embodiments, the DRX configuration includes at least one of the following:

[1117] DRX configuration corresponding to the beam;

[1118] DRX configuration corresponding to the cell;

[1119] DRX configuration corresponding to the geographic region.

[1120] In some embodiments, the DTX configuration includes at least one of the following:

[1121] DTX configuration corresponding to the beam;

[1122] DTX configuration corresponding to the community;

[1123] DTX configuration corresponding to the geographic region.

[1124] In some embodiments, if the first indication information exists, the second indication information also exists; and / or, if the second indication information exists, the first indication information is used to indicate that the cell prohibits NTN connections.

[1125] In some embodiments, the transceiver module 1201 is further configured to:

[1126] System information is sent to the terminal device, and the system information includes the second indication information.

[1127] In some embodiments, the system information further includes identifiers of multiple networks, wherein,

[1128] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[1129] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[1130] In some embodiments, the plurality of networks includes at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[1131] In some embodiments, the system information is System Information Block 1SIB1.

[1132] The communication device 1200 provided in this application embodiment executes the method steps executed by the network device in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[1133] Implementing all or part of the steps of each of the above method embodiments can be accomplished by hardware associated with program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of each of the above method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

[1134] Figure 13 This is an exemplary structural diagram of a communication device provided in an embodiment of this application. The communication device may be, for example, a terminal device or a network device. Figure 13 As shown, the communication device 1300 may include a memory 1301, a processor 1302, and a transceiver 1303. The transceiver 1303 may include a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, transmitter port, or transmitter interface, and the receiver may also be referred to as a receiver, receiver port, or receiver interface, etc. Exemplarily, each of the memory 1301, processor 1302, and transceiver 1303 is interconnected via a bus 1304.

[1135] Memory 1301 is used to store program instructions.

[1136] The processor 1302 is used to execute the program instructions stored in the memory to cause the electronic device to perform the above-described method.

[1137] Implementing all or part of the steps of each of the above method embodiments can be accomplished by hardware associated with program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of each of the above method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

[1138] This application provides a communication device, including: a memory and a processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method in the above-described method embodiments.

[1139] Optionally, embodiments of this application may also provide a storage medium. The storage medium stores instructions that, when executed on a communication device, cause the communication device to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto; it may also be a temporary storage medium.

[1140] This application also provides a computer program product, including a program and / or instructions, which, when executed by a communication device, enable the communication device to implement the method shown in the above-described method embodiments.

[1141] This application also provides a computer program product, including a computer program that, when executed by a processor, can implement the methods shown in the above-described method embodiments.

[1142] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[1143] Those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

[1144] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

Claims

1. An access control method characterized by comprising: The method is applied to a terminal device supporting non-terrestrial network (NTN) access, and the method comprises the following steps: obtaining first indication information and second indication information of a cell, wherein the first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate downlink coverage enhancement information of the cell; determining a cell state of the cell according to the first indication information or the second indication information, wherein the cell state comprises a prohibited state or a non-prohibited state, and the cell state is used for the terminal device to determine whether the terminal device is allowed to access the cell.

2. The method of claim 1, wherein the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or the second indication information is used to indicate whether the cell performs downlink coverage enhancement. The second indication information is a first preset value or a second preset value, wherein the first preset value is used to indicate that the cell supports downlink coverage enhancement or that the cell performs downlink coverage enhancement; and the second preset value is used to indicate that the cell does not support downlink coverage enhancement or that the cell does not perform downlink coverage enhancement.

4. The method of any one of claims 1-3, wherein in a case where the terminal device receives the second indication information, the first indication information is used to indicate that the cell prohibits NTN connection.

3. The method according to claim 1 or 2, characterized in that, The second indication information is obtained by receiving second indication information sent by a network device. The second indication information is carried in system information. In a case where the system information further comprises identifications of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement. The determination of the cell state of the cell according to the first indication information or the second indication information comprises: determining the cell state of the cell according to the device type of the terminal device and the first indication information; or determining the cell state of the cell according to the device type of the terminal device and the second indication information.

5. The method according to any one of claims 1 to 4, characterized in that, The device type comprises at least one of the following: a first device type, wherein a terminal device of the first device type supports downlink coverage enhancement; 6. The method according to any one of claims 1 to 5, characterized in that, a second device type, wherein a terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information; a third device type, wherein a terminal device of the third device type does not support downlink coverage enhancement and does not support obtaining the second indication information.

7. The method according to any one of claims 1 to 6, characterized in that, In a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the determination of the cell state of the cell according to the first indication information or the second indication information comprises: determining the cell state of the cell according to the first indication information. In a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the determination of the cell state of the cell according to the first indication information or the second indication information comprises:

8. The method of claim 7, wherein, determining the cell state of the cell according to the second indication information. ​ ​ ​ 9. The method according to any one of claims 1 to 7, characterized in that, ​ ​ ​ 10. The method according to any one of claims 1 to 7, characterized in that, ​ ​ ​ 11. The method according to any one of claims 1 to 7, characterized in that, In a case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further comprises: In a case that the first preset condition and the second preset condition are met, determining that the cell is a suitable cell; and / or, In a case that the first preset condition and / or the second preset condition are not met, determining that the cell is not a suitable cell.

12. The method of claim 11, wherein, The first preset condition comprises any one of the following: The terminal device receives the second indication information and the terminal device supports downlink coverage enhancement; The terminal device receives the second indication information and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement; The terminal device receives the second indication information and the second indication information indicates that the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement; The cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement; The cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

13. The method of claim 11, wherein, The second preset condition comprises: At least one network comprising the cell broadcasted in a preset network, the preset network being at least one of the following: a network selected by the terminal device, a network registered by the terminal device, a network equivalent to the network selected by the terminal device, and a network equivalent to the network registered by the terminal device; A cell selection criterion is met; A cell state of the cell is a non-prohibited state; At least one tracking area (TA) broadcasted by the cell meets the following condition: a roaming prohibited tracking area list does not comprise the TA, and the preset network comprises a network to which the TA belongs.

14. The method according to any one of claims 1 to 7, characterized in that, In a case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further comprises: In a case that at least one of the following conditions is met, determining that the cell is an acceptable cell: The terminal device receives the second indication information; The second indication information indicates that the cell supports downlink coverage enhancement; The second indication information indicates that the cell performs downlink coverage enhancement; The cell supports downlink coverage enhancement; The cell performs downlink coverage enhancement.

15. The method according to any one of claims 1 to 7, characterized in that, In a case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; According to the first indication information or the second indication information, determining a cell state of the cell, comprising: In a case that a third preset condition is met, determining the cell state of the cell according to the first indication information; In a case that a fourth preset condition is met, determining the cell state of the cell according to the second indication information.

16. The method of claim 15, wherein, The third preset condition comprises at least one of the following: The terminal device detects the cell for the first time; The terminal device determines the cell state of the cell for the first time; A number of times that the terminal device continuously detects the cell is less than or equal to a first threshold value; Within a first preset time length, a number of times that the terminal device continuously detects the cell is less than or equal to a second threshold value; The terminal device continuously determines the cell state of the cell less than or equal to a third threshold value; The terminal device continuously determines the cell state of the cell less than or equal to a fourth threshold value within a second preset time period; The time period between the current time and the first time is less than or equal to a first time threshold value, and the first time is the time when the terminal device first detects the cell; The time period between the current time and the second time is less than or equal to a second time threshold value, and the second time is the time when the terminal device first determines the cell state of the cell; The time period during which the terminal device is in an arbitrary cell selection state is less than or equal to a third time threshold value, and the time period during which the terminal device is in the arbitrary cell selection state is the time period between the current time and the start time when the terminal device enters the arbitrary cell selection state; The network device instructs the terminal device to determine the cell state based on the first indication information.

17. The method of claim 9 or 15, wherein, The method further comprises: In a case where it is determined that the cell state is the prohibited state and at least one of the following conditions is met, the cell is determined to be an acceptable cell: The first indication information indicates that the cell prohibits NTN connection; The terminal device receives the second indication information; The second indication information indicates that the cell supports downlink coverage enhancement; The second indication information indicates that the cell has performed downlink coverage enhancement; The cell supports downlink coverage enhancement; The cell has performed downlink coverage enhancement; The cell selection criterion of the cell is met; The cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state is the prohibited state; The cell supports providing emergency bearer service for a terminal device in a restricted service state.

18. The method of claim 15, wherein, The fourth preset condition includes at least one of the following: The terminal device detects the cell for the first time; The terminal device determines the cell state of the cell for the first time; The terminal device continuously detects the cell more than or equal to a first threshold value; Within a first preset time period, the terminal device continuously detects the cell more than or equal to a second threshold value; The terminal device continuously determines the cell state of the cell more than or equal to a third threshold value; Within a second preset time period, the terminal device continuously determines the cell state of the cell more than or equal to a fourth threshold value; The time period between the current time and the first time is more than or equal to a first time threshold value, and the first time is the time when the terminal device first detects the cell; The time period between the current time and the second time is more than or equal to a second time threshold value, and the second time is the time when the terminal device first determines the cell state of the cell; The time period during which the terminal device is in an arbitrary cell selection state is more than or equal to a third time threshold value, and the time period during which the terminal device is in the arbitrary cell selection state is the time period between the current time and the start time when the terminal device enters the arbitrary cell selection state; The network device instructs the terminal device to determine the cell state based on the second indication information.

19. The method according to any one of claims 1-7, characterized in that, In a case where the terminal device does not support downlink coverage enhancement and does not support acquisition of the second indication information, the method further includes: According to the first indication information or the second indication information, determining the cell state of the cell includes: According to the first indication information, determining the cell state of the cell.

20. The method of any one of claims 1-7, wherein, In a case where the terminal device supports downlink coverage enhancement, according to the first indication information or the second indication information, determining the cell state of the cell includes: According to the second indication information, determining the cell state of the cell.

21. The method of any one of claims 1-20, wherein, The method further includes: Determining whether the cell supports downlink coverage enhancement; or Determining whether the cell has performed downlink coverage enhancement.

22. The method of any one of claims 1-21, wherein, The method further includes: Acquiring the first indication information and the second indication information of the cell includes:

23. The method of any one of claims 7, 9, 15, or 19, wherein, Receiving the first indication information and the second indication information of the cell sent by the network device.

24. The method of any one of claims 7, 10, 15, or 20, wherein, In a case where the first indication information is used to determine the cell state of the cell, the second indication information is ignored; and / or, a cell access prohibition identifier in a master information block (MIB) acquired by the terminal device is ignored.

25. An access control method characterized by comprising: In a case where the second indication information is used to determine the cell state of the cell, the first indication information is ignored; and / or, a cell access prohibition identifier in a master information block (MIB) acquired by the terminal device is ignored. The method applied to a network device includes: Sending, to a terminal device supporting NTN access, first indication information and second indication information of a cell; The first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate downlink coverage enhancement information of the cell.

26. The method of claim 25, wherein: The second indication information is used to indicate whether the cell supports downlink coverage enhancement; or 27. The method of claim 25 or 26, wherein, The second indication information is used to indicate whether the cell has performed downlink coverage enhancement. The second indication information is a first preset value or a second preset value, wherein: The first preset value is used to indicate that the cell supports downlink coverage enhancement or that the cell has performed downlink coverage enhancement; The second preset value is used to indicate that the cell does not support downlink coverage enhancement or that the cell has not performed downlink coverage enhancement.

28. The method of any one of claims 25-27, wherein:

29. The method of any one of claims 25-28, wherein, In a case where the terminal device receives the second indication information, the first indication information is used to indicate that the cell prohibits NTN connection. The method further includes:

30. The method of any one of claims 25-29, wherein, Sending, to the terminal device, second indication information. The second indication information is carried by system information.

31. The method of any one of claims 25-30, wherein, In a case where the system information further includes identifiers of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement. The device type of the terminal device includes at least one of the following: A first device type, the terminal device of the first device type supporting downlink coverage enhancement; A second device type, the terminal device of the second device type not supporting downlink coverage enhancement and supporting acquisition of the second indication information. A third device type, a terminal device of the third device type does not support downlink coverage enhancement, and does not support obtaining the second indication information.

32. A communications device, characterized by Applied to a terminal device, the terminal device supports non-terrestrial network (NTN) access, comprising: A transceiver module, configured to obtain first indication information and second indication information of a cell, the first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate downlink coverage enhancement information of the cell; A processing module, configured to determine a cell state of the cell according to the first indication information or the second indication information, the cell state comprises a prohibited state or a non-prohibited state, and the cell state is used by the terminal device to determine whether to be allowed to access the cell.

33. A communications device, characterized by Applied to a network device, comprising: A transceiver module, configured to send first indication information and second indication information of a cell to a terminal device, the terminal device supports NTN access; The first indication information is used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information is used to indicate downlink coverage enhancement information of the cell.

34. A communication system, characterized by Comprising a terminal device and a network device; The terminal device is configured to execute the access control method in any one of claims 1 to 24 The network device is configured to execute the access control method in any one of claims 25 to 31.

35. A communications device, comprising: Comprising: A memory and a processor, The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory to realize the access control method in any one of claims 1 to 24.

36. A communications device, comprising: Comprising: A memory and a processor, The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory to realize the access control method in any one of claims 25 to 31.

37. A storage medium, the storage medium storing instructions, wherein, When the instructions run on a communication device, the access control method in any one of claims 1 to 24 is realized.

38. A storage medium, the storage medium storing instructions, wherein, When the instructions run on a communication device, the access control method in any one of claims 25 to 31 is realized.

39. A computer program product, characterised in that, Comprising programs and / or instructions, which are executed by a communication device, so that the communication device executes the access control method in any one of claims 1 to 24.

40. A computer program product, characterised in that, Comprising programs and / or instructions, which are executed by a communication device, so that the communication device executes the access control method in any one of claims 25 to 31.

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