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

Abstract

The embodiments of the present application relate to technical fields such as wireless communications. Provided are an access control method, a communication apparatus, a communication system, a communication device, a storage medium, and a program product. A terminal device supports non-terrestrial network (NTN) access, and the method comprises: the terminal device acquiring first indication information and second indication information of a cell, wherein the first indication information is used for indicating that the cell allows NTN connection or prohibits NTN connection, and the second indication information is used for indicating downlink coverage enhancement information of the cell; and on the basis of the first indication information or the second indication information, determining the cell state of the cell, wherein the cell state includes a prohibition state or a non-prohibition state, and is used by the terminal device to determine whether access to the cell is allowed. The access control method, the communication apparatus, the communication system, the communication device, the storage medium, and the program product provided in the embodiments of the present application are used for reducing the access delay of a terminal device and improving user experience.

Description

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

[0001] The present application claims priority to the Chinese patent application No. 202411389637.4, filed on September 30, 2024, and entitled "Access control method, communication apparatus, communication system, communication device, storage medium and program product", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the technical field of wireless communication, and in particular, to an access control method, a communication apparatus, a communication system, a communication device, a storage medium and a program product. BACKGROUND

[0003] In order to meet the downlink coverage enhancement requirement of a New Radio Non-Terrestrial Network (NR NTN), a network device can use a beam hopping (BH) mechanism to communicate with a terminal device.

[0004] In the process of the network device using the beam hopping mechanism to communicate with the terminal device, the following scenario can exist: after the terminal device camps on a cell that supports or performs downlink coverage enhancement, the network device can reject a normal communication request initiated by the terminal device to the network device corresponding to the cell, because the terminal device does not support downlink coverage enhancement, resulting in an increase in the access latency of the terminal device and poor user experience. SUMMARY

[0005] Embodiments of the present application provide an access control method, a communication apparatus, a communication system, a communication device, a storage medium and a program product, which are used to reduce the access latency of a terminal device and improve user experience.

[0006] In a first aspect, an access control method is provided, which is applied to a terminal device supporting Non-Terrestrial Network (NTN) access, and the method comprises:

[0007] obtaining first indication information and second indication information of a cell, the first indication information being used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information being used to indicate downlink coverage enhancement information of the cell;

[0008] determining a cell state of the cell according to the first indication information or the second indication information, the cell state comprising a prohibited state or a non-prohibited state, and the cell state being used for the terminal device to determine whether to be allowed to access the cell.

[0009] In the technical solution, by determining the cell state of the cell, the terminal device can acquire normal service in the cell when the cell state is determined as the non-prohibited state, the network device can avoid rejecting the service request of the terminal device, the time delay of the terminal device accessing the network device can be shortened, the user experience of the terminal device can be improved, the terminal device can reduce repeated access operations, and the resource consumption of the terminal device can be reduced.

[0010] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement.

[0011] The second indication information is used to indicate whether the cell performs downlink coverage enhancement.

[0012] In the technical solution, the terminal device can quickly determine whether the cell supports downlink coverage enhancement or whether the cell performs downlink coverage enhancement according to the second indication information.

[0013] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement.

[0014] The second indication information is used to indicate that the cell performs downlink coverage enhancement or does not perform downlink coverage enhancement.

[0015] In the technical solution, the terminal device can quickly determine whether the cell supports downlink coverage enhancement or whether the cell performs downlink coverage enhancement according to the second indication information.

[0016] In some embodiments, the second indication information is a first preset value or a second preset value, wherein

[0017] The first preset value is used to indicate that the cell supports downlink coverage enhancement or that the cell performs downlink coverage enhancement.

[0018] 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.

[0019] In the technical solution, the terminal device can accurately and quickly determine whether the cell supports downlink coverage enhancement or whether the cell performs downlink coverage enhancement according to the preset value of the second indication information.

[0020] In some embodiments, when the terminal device receives the second indication information, the first indication information is used to indicate that the cell prohibits NTN connection.

[0021] In the technical solution, after receiving the second indication information, the terminal device directly determines that the first indication information indicates that the cell prohibits the NTN connection, without repeatedly judging the content of the first indication information.

[0022] In some embodiments, the second indication information exists if the first indication information exists; and / or,

[0023] In the case where the second indication information exists, the first indication information is used to indicate that the cell prohibits the NTN connection.

[0024] In the technical solution, in the case where it is determined that the second indication information exists, the terminal device can directly determine that the first indication information indicates that the cell prohibits the NTN connection, without repeatedly judging the content of the first indication information.

[0025] In some embodiments, the second indication information is acquired by:

[0026] Receiving the second indication information sent by the network device.

[0027] In the 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 the downlink coverage enhancement or whether the cell has performed the downlink coverage enhancement according to the second indication information.

[0028] In some embodiments, the second indication information is carried in system information.

[0029] In the case where the system information further includes the identities of a plurality of networks, the second indication information is used to indicate whether the plurality of networks support the downlink coverage enhancement.

[0030] In the technical solution, the second indication information can be common to a plurality of preset networks, so that the second indication information does not need to be acquired separately for each preset network.

[0031] In some embodiments, the second indication information is acquired by:

[0032] Receiving system information sent by the network device, the system information including the second indication information.

[0033] In the technical solution, the second indication information can be carried in the system information, so as to be acquired by the terminal device.

[0034] In some embodiments, the system information further includes the identities of a plurality of networks, and the second indication information is used to indicate whether the plurality of networks support the downlink coverage enhancement.

[0035] The second indication information is used to indicate that the plurality of networks support the downlink coverage enhancement; or,

[0036] The second indication information is used to indicate that the plurality of networks does not support downlink coverage enhancement.

[0037] In the above technical solution, the second indication information can be common to a plurality of preset networks, so that the second indication information does not need to be obtained separately for each preset network.

[0038] 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).

[0039] In some embodiments, the system information is system information block 1 (SIB1).

[0040] In the above technical solution, the system information can be SIB1, so as to facilitate the terminal device to obtain.

[0041] In some embodiments, according to the first indication information or the second indication information, the cell state of the cell is determined, including:

[0042] According to the device type of the terminal device and the first indication information, the cell state of the cell is determined; or

[0043] According to the device type of the terminal device and the second indication information, the cell state of the cell is determined.

[0044] In the above technical solution, the terminal device can select the first indication information or the second indication information according to the device type, to accurately determine the cell state of the cell.

[0045] In some embodiments, the device type includes at least one of:

[0046] The first device type, the terminal device of the first device type supports downlink coverage enhancement;

[0047] The second device type, the terminal device of the second device type does not support downlink coverage enhancement and supports obtaining the second indication information;

[0048] The third device type, the terminal device of the third device type does not support downlink coverage enhancement and does not support obtaining the second indication information.

[0049] In the above technical solution, the terminal device of the first device type, the second device type and the third device type all supports NTN access.

[0050] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information;

[0051] The cell state of the cell is determined according to the first indication information or the second indication information, including:

[0052] The cell state of the cell is determined according to the first indication information.

[0053] In the above technical solution, in the case that 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 state of the cell according to the first indication information.

[0054] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0055] The cell state of the cell is determined according to the first indication information or the second indication information, including:

[0056] The cell state of the cell is determined according to the second indication information.

[0057] In the above technical solution, in the case that 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 state of the cell according to the second indication information.

[0058] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0059] In the case that the first preset condition and the second preset condition are met, the cell is determined as a suitable cell; and / or,

[0060] In the case that the first preset condition and / or the second preset condition is not met, the cell is determined as not a suitable cell.

[0061] In the above technical solution, the cell can be determined as a suitable cell based on the first preset condition and the second preset condition, so as to facilitate the terminal device to select whether to access or camp in the cell.

[0062] In some embodiments, the first preset condition includes any one of the following:

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

[0065] 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.

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

[0067] The cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0068] In the above technical solution, the first preset condition can be applicable 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 quickly determine whether the cell is a suitable cell based on the first preset condition.

[0069] In some embodiments, the first preset condition includes any one of the following:

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

[0072] The second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0073] The cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0074] The cell does not perform downlink coverage enhancement, or the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0075] In the above technical solution, the terminal device can determine whether the cell is a suitable cell based on the first preset condition, so as to facilitate the terminal device to determine whether to access or camp in the cell.

[0076] In some embodiments, the second preset condition includes:

[0077] 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.

[0078] satisfying a cell selection criterion;

[0079] a cell state of the cell is a non-barred state;

[0080] at least one tracking area (TA) broadcast by the cell satisfies a condition that a roaming barred TA list does not include the TA, and the preset network includes a network to which the TA belongs.

[0081] In the above technical solution, the terminal device can determine whether the cell is a suitable cell based on the second preset condition, so as to facilitate the terminal device to determine whether to access or camp on the cell.

[0082] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further includes:

[0083] In a case where at least one of the following conditions is satisfied, the cell is determined to be an acceptable cell:

[0084] the terminal device receives the second indication information;

[0085] the second indication information indicates that the cell supports downlink coverage enhancement;

[0086] the second indication information indicates that the cell performs downlink coverage enhancement;

[0087] the cell supports downlink coverage enhancement;

[0088] the cell performs downlink coverage enhancement.

[0089] In the above technical solution, in a case where it is determined that at least one of the conditions in the above technical solution is satisfied, 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 on the cell to obtain limited services, avoid the network device rejecting the service request of the terminal device, be beneficial to shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also can reduce repeated initiation of access and other operations of the terminal device, which is beneficial to reduce the resource consumption of the terminal device.

[0090] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information;

[0091] determining a cell state of the cell according to the first indication information or the second indication information, including:

[0092] in a case where a third preset condition is satisfied, determining the cell state of the cell according to the first indication information;

[0093] In a case where the fourth preset condition is met, the cell state of the cell is determined according to the second indication information.

[0094] In the above technical solution, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, if the third preset condition is met, the terminal device can ignore the second indication information and quickly and accurately determine the cell state of the cell according to 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 state of the cell according to the second indication information.

[0095] In some embodiments, the third preset condition comprises at least one of the following:

[0096] The terminal device detects the cell for the first time;

[0097] The terminal device determines the cell state of the cell for the first time;

[0098] The number of times that the terminal device continuously detects the cell is less than or equal to a first threshold value;

[0099] In a first preset time period, the number of times that the terminal device continuously detects the cell is less than or equal to a second threshold value;

[0100] The number of times that the terminal device continuously determines the cell state of the cell is less than or equal to a third threshold value;

[0101] In a second preset time period, the number of times that the terminal device continuously determines the cell state of the cell is less than or equal to a fourth threshold value;

[0102] A time period between a current time and a first time is less than or equal to a first time threshold value, and the first time is a time when the terminal device detects the cell for the first time;

[0103] A time period between a current time and a second time is less than or equal to a second time threshold value, and the second time is a time when the terminal device determines the cell state of the cell for the first time;

[0104] A 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 a time period between a current time and a start time when the terminal device enters the arbitrary cell selection state;

[0105] The network device instructs the terminal device to determine the cell state based on the first indication information.

[0106] In the technical solution, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device determines whether to select the first indication information or the second indication information according to the third preset condition to determine the cell state of the cell, so as to quickly determine the cell state of the terminal device.

[0107] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further comprises:

[0108] In the case that the cell state is determined to be the prohibited state and at least one condition is met, the cell is determined to be an acceptable cell.

[0109] The first indication information indicates that the cell prohibits NTN connection.

[0110] The terminal device receives the second indication information.

[0111] The second indication information indicates that the cell supports downlink coverage enhancement.

[0112] The second indication information indicates that the cell has performed downlink coverage enhancement.

[0113] The cell supports downlink coverage enhancement.

[0114] The cell has performed downlink coverage enhancement.

[0115] The cell selection criterion of the cell is met.

[0116] The cell allows the terminal device to perform emergency bearer service in the case that the terminal device determines that the cell state is a prohibited state.

[0117] The cell supports providing emergency bearer service for a terminal device in a restricted service state.

[0118] In the technical solution, in the case that the cell state is determined to be the prohibited state and at least one condition 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 on the cell to obtain restricted service, avoid the network device rejecting the service request of the terminal device, shorten the access delay of the terminal device, improve the user experience of the terminal device, reduce the repeated access of the terminal device, and reduce the resource consumption of the terminal device.

[0119] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the method further comprises:

[0120] determine that the cell is an acceptable cell in a case where it is determined that the cell state of the cell is the barred state and at least one of the following conditions is met:

[0121] the first indication information indicates that the cell bars NTN connection;

[0122] the second indication information exists;

[0123] the second indication information indicates that the cell supports downlink coverage enhancement;

[0124] the second indication information indicates that the cell performs downlink coverage enhancement;

[0125] the cell supports downlink coverage enhancement;

[0126] the cell performs downlink coverage enhancement;

[0127] a cell selection criterion of the cell is met;

[0128] the cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state of the cell is a barred state;

[0129] the cell supports providing emergency bearer service for a terminal device in a restricted service state.

[0130] In the above technical solution, in a case where it is determined that the cell state is a barred state 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 that the terminal device of the second device type can camp on the cell to obtain restricted service, avoid the network device rejecting the service request of the terminal device, help shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also help reduce the resource consumption of the terminal device by reducing repeated access initiation and the like of the terminal device.

[0131] In some embodiments, the fourth preset condition includes at least one of the following:

[0132] the terminal device detects the cell for the first time;

[0133] the terminal device determines the cell state of the cell for the first time;

[0134] the number of times that the terminal device continuously detects the cell is greater than or equal to a first threshold value;

[0135] the number of times that the terminal device continuously detects the cell within a first preset time period is greater than or equal to a second threshold value;

[0136] the number of times that the terminal device continuously determines the cell state of the cell is greater than or equal to a third threshold value;

[0137] the number of times that the terminal device successively determines the cell state of the cell in the second preset time period is greater than or equal to a fourth threshold value;

[0138] a time period between the current time and a first time is greater than or equal to a first time threshold value, the first time being a time when the terminal device detects the cell for the first time;

[0139] a time period between the current time and a second time is greater than or equal to a second time threshold value, the second time being a time when the terminal device determines the cell state of the cell for the first time;

[0140] a time period during which the terminal device is in an arbitrary cell selection state is greater than or equal to a third time threshold value, the time period during which the terminal device is in the arbitrary cell selection state being a time period between the current time and a starting time when the terminal device enters the arbitrary cell selection state;

[0141] the network device instructs the terminal device to determine the cell state based on the second indication information.

[0142] In the above technical solution, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the terminal device determines whether to select the first indication information or the second indication information according to a fourth preset condition, so as to quickly determine the cell state of the cell.

[0143] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information;

[0144] determining the cell state of the cell according to the first indication information or the second indication information, comprising:

[0145] determining the cell state of the cell according to the first indication information.

[0146] In the above technical solution, in a case where 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 state of the cell according to the first indication information.

[0147] In some embodiments, in a case where the terminal device supports downlink coverage enhancement; determining the cell state of the cell according to the first indication information or the second indication information, comprising:

[0148] determining the cell state of the cell according to the second indication information.

[0149] In the 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 state of the cell according to the second indication information.

[0150] In some embodiments, the method further includes:

[0151] determining whether the cell supports downlink coverage enhancement; or

[0152] determining whether the cell has performed downlink coverage enhancement.

[0153] In the technical solution, by judging whether the cell indicates downlink coverage enhancement or whether the cell has performed downlink coverage enhancement, the terminal device can select whether to access the cell according to its own device type.

[0154] In some embodiments, the method further includes:

[0155] determining whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or

[0156] determining whether the cell has performed downlink coverage enhancement or has not performed downlink coverage enhancement.

[0157] In the technical solution, by judging whether the cell indicates downlink coverage enhancement or whether the cell has performed downlink coverage enhancement, the terminal device can select whether to access the cell according to its own device type.

[0158] In some embodiments, the cell supporting downlink coverage enhancement includes at least one of:

[0159] supporting a hop-beam mechanism;

[0160] supporting a discontinuous reception (DRX) mechanism on the network side;

[0161] providing a DRX configuration;

[0162] supporting a discontinuous transmission (DTX) mechanism on the network side;

[0163] providing a DTX configuration;

[0164] supporting synchronization signal and physical broadcast channel block (SSB) period extension;

[0165] providing configuration information of the SSB period extension;

[0166] or

[0167] the cell having performed downlink coverage enhancement includes at least one of:

[0168] having performed a hop-beam mechanism;

[0169] A discontinuous reception, DRX, mechanism on a network side is performed.

[0170] A DRX configuration is provided.

[0171] A discontinuous transmission, DTX, mechanism on a network side is performed.

[0172] A DTX configuration is provided.

[0173] A synchronization signal and physical broadcast channel block, SSB, cycle extension is performed.

[0174] Configuration information of the SSB cycle extension is provided.

[0175] In the above technical solutions, a determination condition that a cell supports downlink coverage enhancement can be provided, so that a terminal device can quickly determine whether the cell supports downlink coverage enhancement based on the determination condition that the cell supports downlink coverage enhancement; and a determination condition that a cell performs downlink coverage enhancement can be provided, so that the terminal device can quickly determine whether the cell performs downlink coverage enhancement based on the determination condition that the cell performs downlink coverage enhancement.

[0176] In some embodiments, the cell does not support downlink coverage enhancement includes at least one of the following:

[0177] A beam hopping mechanism is not supported;

[0178] A discontinuous reception, DRX, mechanism on a network side is not performed.

[0179] A DRX configuration is not provided.

[0180] A discontinuous transmission, DTX, mechanism on a network side is not performed.

[0181] A DTX configuration is not provided.

[0182] A synchronization signal and physical broadcast channel block, SSB, cycle extension is not supported.

[0183] Configuration information of the SSB cycle extension is not provided.

[0184] Or,

[0185] The cell does not perform downlink coverage enhancement includes at least one of the following:

[0186] A beam hopping mechanism is not performed.

[0187] A discontinuous reception, DRX, mechanism on a network side is not performed.

[0188] A DRX configuration is not provided.

[0189] A discontinuous transmission, DTX, mechanism on a network side is not performed.

[0190] A DTX configuration is not provided.

[0191] A synchronization signal and physical broadcast channel block (SSB) cycle extension is not performed.

[0192] Configuration information of the SSB cycle extension is not provided.

[0193] In the above technical solutions, a determination condition that a cell does not 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 condition that the cell does not support downlink coverage enhancement. A determination condition that a cell does not 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 condition that the cell does not perform downlink coverage enhancement.

[0194] In some embodiments, the DRX configuration comprises at least one of the following:

[0195] A DRX configuration corresponding to a beam;

[0196] A DRX configuration corresponding to a cell;

[0197] A DRX configuration corresponding to a geographic area.

[0198] In some embodiments, the DTX configuration comprises at least one of the following:

[0199] A DTX configuration corresponding to a beam;

[0200] A DTX configuration corresponding to a cell;

[0201] A DTX configuration corresponding to a geographic area.

[0202] In some embodiments, the obtaining of the first indication information and the second indication information of the cell comprises:

[0203] Receiving the first indication information and the second indication information of the cell sent by the network device.

[0204] In the above technical solutions, the terminal device can receive the first indication information and the second indication information sent by the network device, so that the terminal device can quickly determine the cell state of the cell according to the first indication information and the second indication information.

[0205] In some embodiments, in a case where the cell state of the cell is determined according to the first indication information, the second indication information is ignored; and / or, a cell barring identifier in a master information block (MIB) obtained by the terminal device is ignored.

[0206] In some embodiments, the first indication information is ignored in a case that the cell state of the cell is determined according to the second indication information; and / or, a cell access prohibition identifier in the MIB acquired by the terminal device is ignored.

[0207] In a second aspect, the embodiments of the present application provide an access control method applied to a network device, the method comprising:

[0208] sending first indication information and second indication information of the cell to the terminal device, the terminal device supporting NTN access;

[0209] The first indication information is used to indicate that 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.

[0210] In the above technical solution, the network device can send the first indication information and the second indication information to the terminal device, so that the terminal device can determine the cell state of the cell according to the first indication information and the second indication information.

[0211] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or,

[0212] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0213] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or,

[0214] The second indication information is used to indicate that the cell has performed downlink coverage enhancement or has not performed downlink coverage enhancement.

[0215] In some embodiments, the second indication information is a first preset value or a second preset value, wherein,

[0216] The first preset value is used to indicate that the cell supports downlink coverage enhancement or the cell has performed downlink coverage enhancement;

[0217] The second preset value is used to indicate that the cell does not support downlink coverage enhancement or the cell has not performed downlink coverage enhancement.

[0218] In some embodiments, the cell supporting downlink coverage enhancement comprises at least one of the following:

[0219] Supporting a hop-beam mechanism;

[0220] Supporting a discontinuous reception (DRX) mechanism on the network side;

[0221] A DRX configuration is provided;

[0222] A discontinuous transmission (DTX) mechanism at the network side is supported;

[0223] A DTX configuration is provided;

[0224] A synchronization signal and physical broadcast channel block (SSB) cycle extension is supported;

[0225] Configuration information of the SSB cycle extension is provided;

[0226] Alternatively,

[0227] The cell performs downlink coverage enhancement including at least one of:

[0228] A beam hopping mechanism is performed;

[0229] A discontinuous reception (DRX) mechanism at the network side is performed;

[0230] A DRX configuration is provided;

[0231] A discontinuous transmission (DTX) mechanism at the network side is performed;

[0232] A DTX configuration is provided;

[0233] A synchronization signal and physical broadcast channel block (SSB) cycle extension is performed;

[0234] Configuration information of the SSB cycle extension is provided.

[0235] In the above technical solutions,

[0236] In some embodiments, the cell does not support downlink coverage enhancement including at least one of:

[0237] A beam hopping mechanism is not supported;

[0238] A discontinuous reception (DRX) mechanism at the network side is not supported;

[0239] A DRX configuration is not provided;

[0240] A discontinuous transmission (DTX) mechanism at the network side is not supported;

[0241] A DTX configuration is not provided;

[0242] A synchronization signal and physical broadcast channel block (SSB) cycle extension is not supported;

[0243] Configuration information of the SSB cycle extension is not provided;

[0244] Alternatively,

[0245] The cell does not perform downlink coverage enhancement including at least one of:

[0246] A beam hopping mechanism is not performed;

[0247] A discontinuous reception, DRX, mechanism at a network side is not performed;

[0248] A DRX configuration is not provided;

[0249] A discontinuous transmission, DTX, mechanism at a network side is not performed;

[0250] A DTX configuration is not provided;

[0251] A synchronization signal and physical broadcast channel block, SSB, cycle extension is not performed;

[0252] Configuration information of the SSB cycle extension is not provided.

[0253] In some embodiments, the DRX configuration comprises at least one of:

[0254] A DRX configuration corresponding to a beam;

[0255] A DRX configuration corresponding to a cell;

[0256] A DRX configuration corresponding to a geographical area.

[0257] In some embodiments, the DTX configuration comprises at least one of:

[0258] A DTX configuration corresponding to a beam;

[0259] A DTX configuration corresponding to a cell;

[0260] A DTX configuration corresponding to a geographical area.

[0261] In some embodiments, 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.

[0262] In some embodiments, the method further comprises:

[0263] sending, to the terminal device, second indication information.

[0264] In some embodiments, the method further comprises:

[0265] The second indication information is carried by system information;

[0266] In a case where the system information further comprises identification of a plurality of networks, the second indication information is used to indicate whether the plurality of networks support downlink coverage enhancement.

[0267] In some embodiments, the method further comprises:

[0268] transmitting system information to the terminal device, the system information comprising the second indication information.

[0269] In some embodiments, the system information further comprises an identity of a plurality of networks, wherein,

[0270] The second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0271] The second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0272] In some embodiments, the plurality of networks comprises at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0273] In some embodiments, the system information is a system information block 1 (SIB1).

[0274] In some embodiments, the device type of the terminal device comprises at least one of:

[0275] A first device type, terminal devices of the first device type supporting downlink coverage enhancement;

[0276] A second device type, terminal devices of the second device type not supporting downlink coverage enhancement and supporting obtaining the second indication information;

[0277] A third device type, terminal devices of the third device type not supporting downlink coverage enhancement and not supporting obtaining the second indication information.

[0278] In a third aspect, an embodiment of the present application provides a communication apparatus applied to a terminal device, the terminal device supporting non-terrestrial network (NTN) access, comprising:

[0279] A transceiver module, configured to obtain first indication information and second indication information of a cell, the first indication information being used to indicate whether the cell allows NTN connection or prohibits NTN connection, and the second indication information being used to indicate downlink coverage enhancement information of the cell;

[0280] 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 comprising a prohibited state or a non-prohibited state, and the cell state being used by the terminal device to determine whether the terminal device is allowed to access the cell.

[0281] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or,

[0282] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0283] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or,

[0284] The second indication information is used to indicate that the cell has performed downlink coverage enhancement or has not performed downlink coverage enhancement.

[0285] In some embodiments, the second indication information is a first preset value or a second preset value, wherein,

[0286] The first preset value is used to indicate that the cell supports downlink coverage enhancement or the cell has performed downlink coverage enhancement.

[0287] The second preset value is used to indicate that the cell does not support downlink coverage enhancement or the cell has not performed downlink coverage enhancement.

[0288] In some embodiments, in the case that the terminal device receives the second indication information, the first indication information is used to indicate that the cell prohibits NTN connection.

[0289] In some embodiments, in the case that the first indication information exists, the second indication information exists; and / or,

[0290] In the case that the second indication information exists, the first indication information is used to indicate that the cell prohibits NTN connection.

[0291] In some embodiments, the transceiver is specifically used for:

[0292] Receiving the second indication information sent by the network device.

[0293] In some embodiments, the second indication information is carried by system information.

[0294] In the case that the system information further includes the identities of multiple networks, the second indication information is used to indicate whether the multiple networks support downlink coverage enhancement.

[0295] In some embodiments, the transceiver is specifically used for:

[0296] Receiving the system information sent by the network device, wherein the system information includes the second indication information.

[0297] In some embodiments, the system information further includes the identities of multiple networks, wherein,

[0298] The second indication information is used to indicate that the multiple networks support downlink coverage enhancement; or,

[0299] The second indication information is used for indicating that the plurality of networks does not support downlink coverage enhancement.

[0300] In some embodiments, the plurality of networks comprises at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0301] In some embodiments, the processing module is specifically configured to:

[0302] determine a cell state of the cell according to the device type of the terminal device and the first indication information; or

[0303] determine a cell state of the cell according to the device type of the terminal device and the second indication information.

[0304] In some embodiments, the device type comprises at least one of the following:

[0305] a first device type, terminal devices of the first device type support downlink coverage enhancement;

[0306] a second device type, terminal devices of the second device type do not support downlink coverage enhancement and support obtaining the second indication information;

[0307] a third device type, terminal devices of the third device type do not support downlink coverage enhancement and do not support obtaining the second indication information.

[0308] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; the processing module is specifically configured to:

[0309] determine a cell state of the cell according to the first indication information.

[0310] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; the processing module is specifically configured to further:

[0311] determine a cell state of the cell according to the second indication information.

[0312] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; the processing module is specifically configured to further:

[0313] determine that the cell is a suitable cell in the case that a first preset condition and a second preset condition are met; and / or

[0314] determine that the cell is not a suitable cell in the case that the first preset condition and / or the second preset condition is not met.

[0315] In some embodiments, the first preset condition comprises any one of the following:

[0316] the terminal device receives the second indication information and the terminal device supports downlink coverage enhancement;

[0317] 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;

[0318] 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;

[0319] the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0320] the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0321] In some embodiments, the first preset condition comprises any one of the following:

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

[0324] the second indication information does not exist, or the second indication information exists and the second indication information indicates that the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0325] the cell does not support downlink coverage enhancement, or the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0326] the cell does not perform downlink coverage enhancement, or the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0327] In some embodiments, the second preset condition comprises:

[0328] at least one network comprising the cell broadcast 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;

[0329] satisfying a cell selection criterion;

[0330] a cell state of the cell is a non-barred state;

[0331] at least one tracking area (TA) broadcast by the cell satisfies a condition that a roaming barred TA list does not include the TA, and the preset network includes a network to which the TA belongs.

[0332] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is specifically further configured to:

[0333] determine the cell as an acceptable cell in a case where at least one of the following conditions is satisfied:

[0334] the second indication information exists;

[0335] the second indication information indicates that the cell supports downlink coverage enhancement;

[0336] the second indication information indicates that the cell performs downlink coverage enhancement;

[0337] the cell supports downlink coverage enhancement;

[0338] the cell performs downlink coverage enhancement.

[0339] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, the processing module is specifically further configured to:

[0340] determine a cell state of the cell according to the first indication information in a case where a third preset condition is satisfied;

[0341] determine the cell state of the cell according to the second indication information in a case where a fourth preset condition is satisfied.

[0342] In some embodiments, the third preset condition includes at least one of the following:

[0343] the terminal device detects the cell for the first time;

[0344] the terminal device determines the cell state of the cell for the first time;

[0345] a number of times that the terminal device continuously detects the cell is less than or equal to a first threshold value;

[0346] a number of times that the terminal device continuously detects the cell within a first preset time period is less than or equal to a second threshold value;

[0347] The terminal device determines the cell state of the cell continuously less than or equal to a third threshold value;

[0348] The terminal device determines the cell state of the cell continuously less than or equal to a fourth threshold value within a second preset time length;

[0349] The time length between the current moment and the first moment is less than or equal to a first time threshold value, and the first moment is the moment when the terminal device detects the cell for the first time;

[0350] The time length between the current moment and the second moment is less than or equal to a second time threshold value, and the second moment is the moment when the terminal device determines the cell state of the cell for the first time;

[0351] The time length that the terminal device is in an arbitrary cell selection state is less than or equal to a third time threshold value, and the time length that the terminal device is in the arbitrary cell selection state is the time length between the current moment and the starting moment when the terminal device enters the arbitrary cell selection state;

[0352] The network device instructs the terminal device to determine the cell state based on the first indication information.

[0353] In some embodiments, the processing module is specifically further configured to:

[0354] 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:

[0355] The first indication information indicates that the cell prohibits NTN connection;

[0356] The terminal device receives second indication information;

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

[0358] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0359] The cell supports downlink coverage enhancement;

[0360] The cell has performed downlink coverage enhancement;

[0361] The cell selection criterion of the cell is met;

[0362] The cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state is a prohibited state;

[0363] The cell supports providing emergency bearer service for a terminal device in a restricted service state.

[0364] In some embodiments, the fourth preset condition comprises at least one of the following:

[0365] The terminal device detects the cell for the first time;

[0366] The terminal device determines the cell state of the cell for the first time;

[0367] The terminal device continuously detects the cell for a number of times greater than or equal to a first threshold value;

[0368] In a first preset time period, the terminal device continuously detects the cell for a number of times greater than or equal to a second threshold value;

[0369] The terminal device continuously determines the cell state of the cell for a number of times greater than or equal to a third threshold value;

[0370] In a second preset time period, the terminal device continuously determines the cell state of the cell for a number of times greater than or equal to a fourth threshold value;

[0371] A time period between a current time and a first time is greater than or equal to a first time threshold value, and the first time is a time when the terminal device detects the cell for the first time;

[0372] A time period between the current time and a second time is greater than or equal to a second time threshold value, and the second time is a time when the terminal device determines the cell state of the cell for the first time;

[0373] The terminal device is in an arbitrary cell selection state for a time period greater than or equal to a third time threshold value, and the time period of the arbitrary cell selection state is a time period between a current time and a starting time when the terminal device enters the arbitrary cell selection state;

[0374] The network device instructs the terminal device to determine the cell state based on the second indication information.

[0375] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information; the processing module is specifically further configured to:

[0376] Determine the cell state of the cell according to the first indication information.

[0377] In some embodiments, in a case where the terminal device supports downlink coverage enhancement; the processing module is specifically further configured to:

[0378] Determine the cell state of the cell according to the second indication information.

[0379] In some embodiments, the processing module is specifically further configured to:

[0380] determining whether the cell supports downlink coverage enhancement; or

[0381] determining whether the cell performs downlink coverage enhancement.

[0382] In some embodiments, the cell supporting downlink coverage enhancement comprises at least one of the following:

[0383] supporting a discontinuous reception, DRX, mechanism on a network side;

[0384] providing a DRX configuration;

[0385] supporting a discontinuous transmission, DTX, mechanism on a network side;

[0386] providing a DTX configuration;

[0387] supporting a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0388] providing configuration information of the SSB cycle extension;

[0389] or

[0390] the cell performing downlink coverage enhancement comprises at least one of the following:

[0391] performing a hop-beam mechanism;

[0392] performing a discontinuous reception, DRX, mechanism on a network side;

[0393] providing a DRX configuration;

[0394] performing a discontinuous transmission, DTX, mechanism on a network side;

[0395] providing a DTX configuration;

[0396] performing a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0397] providing configuration information of the SSB cycle extension.

[0398] In some embodiments, the cell not supporting downlink coverage enhancement comprises at least one of the following:

[0399] not supporting a hop-beam mechanism;

[0400] not supporting a discontinuous reception, DRX, mechanism on a network side;

[0401] not providing a DRX configuration;

[0402] not supporting a discontinuous transmission, DTX, mechanism on a network side;

[0403] not providing a DTX configuration;

[0404] The synchronization signal and physical broadcast channel block SSB period extension is not supported;

[0405] Configuration information of the SSB period extension is not provided;

[0406] Or,

[0407] The cell does not perform downlink coverage enhancement, including at least one of the following:

[0408] The beam hopping mechanism is not performed;

[0409] The network side discontinuous reception DRX mechanism is not performed;

[0410] The DRX configuration is not provided;

[0411] The network side discontinuous transmission DTX mechanism is not performed;

[0412] The DTX configuration is not provided;

[0413] The synchronization signal and physical broadcast channel block SSB period extension is not performed;

[0414] Configuration information of the SSB period extension is not provided.

[0415] In some embodiments, the DRX configuration includes at least one of the following:

[0416] The DRX configuration corresponding to the beam;

[0417] The DRX configuration corresponding to the cell;

[0418] The DRX configuration corresponding to the geographic area.

[0419] In some embodiments, the DTX configuration includes at least one of the following:

[0420] The DTX configuration corresponding to the beam;

[0421] The DTX configuration corresponding to the cell;

[0422] The DTX configuration corresponding to the geographic area.

[0423] In some embodiments, the transceiver is specifically configured to:

[0424] Receive the first indication information and the second indication information of the cell sent by the network device.

[0425] In some embodiments, in the case of determining the cell state of the cell 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.

[0426] In some embodiments, the first indication information is ignored in a case that the cell state of the cell is determined according to the second indication information; and / or, a cell barring identifier in a master information block (MIB) acquired by the terminal device is ignored.

[0427] In a fourth aspect, an embodiment of the present application provides a communication apparatus applied to a network device, comprising:

[0428] A transceiver module, configured to send first indication information and second indication information of a cell to a terminal device supporting NTN access.

[0429] The first indication information is used to indicate that 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.

[0430] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement; or,

[0431] The second indication information is used to indicate whether the cell has performed downlink coverage enhancement.

[0432] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or,

[0433] The second indication information is used to indicate that the cell has performed downlink coverage enhancement or has not performed downlink coverage enhancement.

[0434] In some embodiments, the second indication information is a first preset value or a second preset value, wherein,

[0435] The first preset value is used to indicate that the cell supports downlink coverage enhancement or the cell has performed downlink coverage enhancement.

[0436] The second preset value is used to indicate that the cell does not support downlink coverage enhancement or the cell has not performed downlink coverage enhancement.

[0437] In some embodiments, in a case that the terminal device receives the second indication information, the first indication information is used to indicate that the cell prohibits NTN connection.

[0438] In some embodiments, the transceiver module is specifically further configured to:

[0439] Send the second indication information to the terminal device.

[0440] In some embodiments, the second indication information is carried by system information.

[0441] In a case that the system information further comprises the identification of the plurality of networks, the second indication information is used to indicate whether the plurality of networks support downlink coverage enhancement.

[0442] In some embodiments, the device type of the terminal device comprises at least one of:

[0443] a first device type, terminal devices of the first device type support downlink coverage enhancement;

[0444] a second device type, terminal devices of the second device type do not support downlink coverage enhancement and support obtaining the second indication information;

[0445] a third device type, terminal devices of the third device type do not support downlink coverage enhancement and do not support obtaining the second indication information.

[0446] In some embodiments, the cell supporting downlink coverage enhancement comprises at least one of:

[0447] supporting a hopping beam mechanism;

[0448] supporting a discontinuous reception, DRX, mechanism on a network side;

[0449] providing a DRX configuration;

[0450] supporting a discontinuous transmission, DTX, mechanism on a network side;

[0451] providing a DTX configuration;

[0452] supporting a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0453] providing configuration information of the SSB cycle extension;

[0454] or

[0455] the cell performing downlink coverage enhancement comprises at least one of:

[0456] performing a hopping beam mechanism;

[0457] performing a discontinuous reception, DRX, mechanism on a network side;

[0458] providing a DRX configuration;

[0459] performing a discontinuous transmission, DTX, mechanism on a network side;

[0460] providing a DTX configuration;

[0461] performing a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0462] providing configuration information of the SSB cycle extension.

[0463] In some embodiments, the cell does not support downlink coverage enhancement comprises at least one of:

[0464] does not support a beam hopping mechanism;

[0465] does not support a discontinuous reception, DRX, mechanism on the network side;

[0466] does not provide a DRX configuration;

[0467] does not support a discontinuous transmission, DTX, mechanism on the network side;

[0468] does not provide a DTX configuration;

[0469] does not support synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0470] does not provide configuration information of the SSB cycle extension;

[0471] or

[0472] the cell does not perform downlink coverage enhancement comprises at least one of:

[0473] does not perform a beam hopping mechanism;

[0474] does not perform a discontinuous reception, DRX, mechanism on the network side;

[0475] does not provide a DRX configuration;

[0476] does not perform a discontinuous transmission, DTX, mechanism on the network side;

[0477] does not provide a DTX configuration;

[0478] does not perform synchronization signal and physical broadcast channel block, SSB, cycle extension;

[0479] does not provide configuration information of the SSB cycle extension.

[0480] In some embodiments, the DRX configuration comprises at least one of:

[0481] a DRX configuration corresponding to a beam;

[0482] a DRX configuration corresponding to a cell;

[0483] a DRX configuration corresponding to a geographical area.

[0484] In some embodiments, the DTX configuration comprises at least one of:

[0485] a DTX configuration corresponding to a beam;

[0486] a DTX configuration corresponding to a cell;

[0487] a DTX configuration corresponding to a geographical area.

[0488] In some embodiments, the second indication information exists in the case that the first indication information exists; and / or,

[0489] In the case that the second indication information exists, the first indication information is used to indicate that the cell prohibits NTN connection.

[0490] In some embodiments, the transceiver is further configured to:

[0491] transmit system information to the terminal device, wherein the system information comprises the second indication information.

[0492] In some embodiments, the system information further comprises identities of a plurality of networks, wherein,

[0493] the second indication information is used to indicate that the plurality of networks support downlink coverage enhancement; or,

[0494] the second indication information is used to indicate that the plurality of networks do not support downlink coverage enhancement.

[0495] In some embodiments, the plurality of networks comprises at least one public land mobile network (PLMN) and / or at least one non-public network (NPN).

[0496] In some embodiments, the system information is a system information block 1 (SIB1).

[0497] In a fifth aspect, the embodiments of the present application provide a communication system, comprising a terminal device and a network device;

[0498] The terminal device is configured to perform the access control method of any one of the first aspect;

[0499] The network device is configured to perform the access control method of any one of the second aspect.

[0500] In a sixth aspect, the embodiments of the present application provide a communication device, comprising a memory and a processor,

[0501] The memory stores computer-executable instructions;

[0502] The processor executes the computer-executable instructions stored in the memory to implement the access control method of any one of the first aspect.

[0503] In a seventh aspect, the embodiments of the present application provide a communication device, comprising a memory and a processor,

[0504] The memory stores computer-executable instructions;

[0505] The processor executes computer-executed instructions stored in the memory to implement the access control method according to any one of the second aspect.

[0506] In an eighth aspect, an embodiment of the present application provides a storage medium, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the instructions are used to implement the access control method according to any one of the first aspect.

[0507] In a ninth aspect, an embodiment of the present application provides a storage medium, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the instructions are used to implement the access control method according to any one of the second aspect.

[0508] In a tenth aspect, an embodiment of the present application provides a computer program product, comprising a program and / or instructions, and when the program and / or instructions are executed on a communication device, the program and / or instructions cause the communication device to execute the access control method according to any one of the first aspect.

[0509] In an eleventh aspect, an embodiment of the present application provides a computer program product, comprising a program and / or instructions, and when the program and / or instructions are executed on a communication device, the program and / or instructions cause the communication device to execute the access control method according to any one of the second aspect.

[0510] The access control method, the communication device, the communication system, the communication device, the storage medium and the program product provided in the embodiments of the present application support non-terrestrial network NTN access by a terminal device, the terminal device acquires first indication information and second indication information of a cell, and determines a cell state of the cell according to the first indication information or the second indication information. By determining the cell state of the cell, the terminal device can acquire normal service in the cell when it is determined that the cell state is a non-prohibited state, which avoids the network device rejecting a service request of the terminal device, is conducive to shortening the time delay of the terminal device accessing the network device, improves the user experience of the terminal device, and can also reduce repeated access operations of the terminal device, which is conducive to reducing the resource consumption of the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0511] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application;

[0512] FIG. 2 is a schematic diagram of a BH mechanism according to an embodiment of the present application;

[0513] FIG. 3 is one of example schematic diagrams of an access control method according to an embodiment of the present application;

[0514] FIG. 4 is another of example schematic diagrams of an access control method according to an embodiment of the present application;

[0515] FIG. 5 is a third example schematic diagram of an access control method according to an embodiment of the present application;

[0516] FIG. 6 is a fourth example schematic diagram of an access control method according to an embodiment of the present application;

[0517] FIG. 7 is a fifth example schematic diagram of an access control method according to an embodiment of the present application;

[0518] FIG. 8 is a sixth example schematic diagram of an access control method according to an embodiment of the present application;

[0519] FIG. 9 is a seventh example schematic diagram of an access control method according to an embodiment of the present application;

[0520] FIG. 10 is an eighth example schematic diagram of an access control method according to an embodiment of the present application;

[0521] FIG. 11 is a first example schematic diagram of a communication apparatus according to an embodiment of the present application;

[0522] FIG. 12 is a second example schematic diagram of a communication apparatus according to an embodiment of the present application;

[0523] FIG. 13 is an example schematic diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0524] First, the related terms involved in the present application are explained.

[0525] Non-Terrestrial Network (NTN): NTN provides non-ground new radio (NR) access for terminals through NTN payloads and NTN gateway stations, and NTN includes low earth orbiting (LEO) satellites, medium earth orbiting (MEO) satellites, geosynchronous orbit (GSO) satellites, and high altitude platform systems (HAPS). Among them, the NTN payload and the terminal device communicate based on the service link, and the NTN payload and the gateway station communicate based on the feeder link.

[0526] In the NTN system, there are three types of cells as follows:

[0527] Earth-fixed cell: can provide communication services by beams that continuously cover the same geographical area, for example, the beams can be generated by GSO satellites;

[0528] Quasi-Earth-fixed cell: can be provided by a beam that covers one geographic area for some period and another geographic area for another period, e.g., the beam can be steerable beam generated by a NGSO satellite;

[0529] Earth-moving cell: provided by a beam that slides over the surface of the Earth, e.g., the beam can be fixed or non-steerable beam generated by a NGSO satellite.

[0530] Network device refers to a network device located in space and capable of communicating with a terminal device. The network device can also be referred to as a space base station, a satellite base station, a satellite, a satellite communication node, a satellite communication module, or a base station, etc. The network device can also be referred to as an access network device or a wireless access network device. The network device can be a base station (Base Transceiver Station, BTS) in a Global System for Mobile Communication (Global System for Mobile Communication, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) communication system carried by a satellite, a base station (NodeB, NB) in a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system carried by a satellite, an evolved base station (evolved NodeB, eNB or eNodeB) in an LTE system carried by a satellite, a base station (gNB) in a 5G network carried by a satellite, a base station in a future network (such as a 6G network) carried by a satellite after a 5G network, a base station in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network carried by a satellite, a transmission reception point (transmission reception point, TRP) carried by a satellite, a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario carried by a satellite, a city base station, a micro base station, a pico base station, or a femto base station carried by a satellite, etc.

[0531] Terminal device refers to a device that contains wireless transceiver function and can cooperate with network device to provide communication service for users. Terminal device can also be referred to as user equipment (UE), access terminal device, user unit, user station, mobile station, mobile station, remote station, remote terminal device, mobile device, user terminal device, wireless communication device, user agent or user apparatus, etc. At present, some examples of terminal devices include mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle-mounted device, ship-mounted device, wearable device, etc.

[0532] In the present application, activation can be understood as taking effect, and deactivation can be understood as invalidation.

[0533] In the present application, the term "comprising" and its variants can refer to non-limiting inclusion; the term "or" and its variants can refer to "and / or". The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0534] In the present application, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. In the present application, the term "at least one" means one or more, and "multiple" means two or more. In the present application, the term "at least one of" or the like means any combination of the terms, including a single term or any combination of multiple terms. For example, at least one of a, b, or c can mean a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0535] In the present application, the words "in some embodiments", "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "in some embodiments", "exemplary", or "for example" in the present application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "in some embodiments", "exemplary", or "for example" is intended to present concepts in a concrete manner. In the present application, the words "in the case of" or "when" mean a condition.

[0536] In some embodiments, devices and apparatuses can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0537] In some embodiments, data, information, etc. can be obtained in accordance with the laws and regulations of the place.

[0538] In some embodiments, data, information, etc. can be obtained with the consent of the user.

[0539] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application. Please refer to Figure 1, the communication system 100 includes a terminal device 101 (for example, UE) and a network device 102 (for example, satellite or base station), and the network device and the terminal device have a service link therebetween, and the network device can provide non-terrestrial new radio (NR) access for the terminal device, etc.

[0540] It should be understood that the number and form of devices shown in FIG. 1 are only for example and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more terminal devices and two or more network devices can be included. The communication system shown in FIG. 1 is only illustrated by taking one terminal device 101 and one network device 102 as an example.

[0541] It can be understood that the communication system described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present application. Those skilled in the art can know that the technical solutions proposed in the embodiments of the present application are also applicable to similar technical problems as the system architecture evolves and new service scenarios appear.

[0542] The following embodiments of the present application can be applied to the communication system 100 shown in FIG. 1 or part of the main body, but are not limited thereto. The main bodies shown in FIG. 1 are illustrated, and the communication system can include all or part of the main bodies in FIG. 1, or other main bodies other than those in FIG. 1. The number and form of each main body is arbitrary, each main body can be real or virtual, the connection relationship between each main body is illustrated, each main body can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0543] In the NTN system, due to the limited transmission power of the network device, the network device can not be able to activate all beams at a given time, and downlink coverage enhancement needs to be considered. The BH mechanism is a mechanism that can achieve downlink coverage enhancement, which can enable power sharing among different beams. Based on the BH mechanism, the network device can activate some beams and deactivate other beams except some beams in a period of time; the network device can activate other beams and deactivate other beams except other beams in another period of time. In the following, the BH mechanism is described in conjunction with FIG. 2.

[0544] FIG. 2 is a schematic diagram of the BH mechanism provided by the embodiments of the present application. As shown in FIG. 2, the network device (for example, a satellite) has a plurality of beams. The plurality of beams include, for example, beams 1 to 14.

[0545] At time T1, the network device can activate beams 1 to 4 and deactivate beams 5 to 14.

[0546] At time T2, the network device can activate beams 5, 8, 9 and 12, and deactivate beams 1 to 4, 6, 7, 10, 11, 13 and 14.

[0547] The NTN terminal device can include an NTN terminal device supporting downlink coverage enhancement and an NTN terminal device not supporting downlink coverage enhancement. In this embodiment and subsequent embodiments, the NTN terminal device is a terminal device supporting NTN access. In the process of the network device communicating with the NTN terminal device by adopting the hop-beam mechanism, for the NTN terminal device not supporting downlink coverage enhancement, there can be two scenarios as follows:

[0548] The first scenario: the NTN cell in the coverage range of the network device includes a cell supporting downlink coverage enhancement or performing downlink coverage enhancement, and the cell supporting downlink coverage enhancement or performing downlink coverage enhancement allows the NTN terminal device to camp on or access.

[0549] In this scenario, although the NTN terminal device can camp on or access the NTN cell in the beam coverage range, because the NTN terminal device does not support downlink coverage enhancement, the NTN terminal device cannot learn the hop-beam mechanism of the network device, and thus cannot know which beams are activated and / or deactivated by the network device at which time. In order to ensure that the NTN terminal device communicates with the network device in time in the beam coverage range, the NTN terminal device needs to continuously perform measurement, listening or access initiation, etc., resulting in resource waste of the NTN terminal device and great power consumption loss of the terminal device.

[0550] The second scenario: all the NTN cells in the coverage range of the network device in a certain period (for example, within a few hours) are cells supporting downlink coverage enhancement or performing downlink coverage enhancement, and the cells supporting downlink coverage enhancement or performing downlink coverage enhancement do not allow the NTN terminal device to camp on or access.

[0551] In this scenario, because the NTN terminal device does not support downlink coverage enhancement, the network device can reject the normal communication service initiated by the NTN terminal device in the certain period, resulting in increased access delay of the NTN terminal device and poor user experience.

[0552] 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.

[0553] 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.

[0554] The interaction process between the terminal device and the network device can be illustrated in Figure 3, which is one of the exemplary schematic diagrams of an access control method according to an embodiment of this application. The execution subject of the access control method in this application 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.

[0555] Please refer to Figure 3. This access control method may include the following steps:

[0556] S301. The network device sends the first and second indication information of the cell to the terminal device.

[0557] Among them, the terminal equipment supports NTN access.

[0558] 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.

[0559] In some embodiments, the system information may be System Information Block Type 1 (SIB1).

[0560] 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.

[0561] In some embodiments, the terminal device obtains first indication information and second indication information of the cell.

[0562] 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.

[0563] In some embodiments, the first indication information and the second indication information can be carried through system information.

[0564] In some embodiments, the terminal device may receive system information sent by the network device, which may include second indication information.

[0565] In some embodiments, the terminal device may receive a second instruction message sent by the network device.

[0566] In some embodiments, the system information may also include first indication information.

[0567] In some embodiments, the system information may be SIB1.

[0568] 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.

[0569] 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.

[0570] 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.

[0571] 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.

[0572] The first indication information can also be common to multiple networks, and the first indication information can be used to indicate whether the cell in which each network is located allows NTN connection or prohibits NTN connection.

[0573] In some embodiments, the multiple networks can include at least one Public Land Mobile Network (PLMN) and / or at least one Non-Public Network (NPN). Among them, the at least one PLMN can represent one PLMN or multiple PLMNs, and the at least one NPN can represent one NPN or multiple NPNs.

[0574] In some embodiments, the cell can be a cell within the communication service coverage range of the network device.

[0575] It can be understood that, in the case where the cell allows NTN connection, the cell can allow NTN terminal devices to access; in the case where the cell prohibits NTN connection, the cell can reject access of NTN terminal devices.

[0576] In some embodiments, the first indication information can be used to indicate whether the cell allows NTN connection or prohibits NTN connection.

[0577] In some embodiments, the second indication information can be used to indicate downlink coverage enhancement information of the cell.

[0578] In some embodiments, the downlink coverage enhancement information can be at least one of the following: the cell supports downlink coverage enhancement; the cell does not support downlink coverage enhancement; the cell performs downlink coverage enhancement; and the cell does not perform downlink coverage enhancement.

[0579] In some embodiments, the second indication information can be used to indicate whether the cell supports downlink coverage enhancement; or the second indication information can be used to indicate whether the cell performs downlink coverage enhancement.

[0580] In some embodiments, the second indication information is used to indicate whether the cell supports downlink coverage enhancement, which can also be expressed as: the second indication information can be used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement.

[0581] In some embodiments, the second indication information is used to indicate whether the cell performs downlink coverage enhancement, which can also be expressed as: the second indication information is used to indicate that the cell performs downlink coverage enhancement or does not perform downlink coverage enhancement.

[0582] In some embodiments, the second indication information can be a first preset value or a second preset value, wherein,

[0583] The first preset value can be used to indicate that the cell supports downlink coverage enhancement, or the cell performs downlink coverage enhancement.

[0584] The second preset value can be used to indicate that the cell does not support downlink coverage enhancement, or the cell does not perform downlink coverage enhancement.

[0585] In some embodiments, the second indication information can be represented by 1 bit, and the value of the bit can be the first preset value or the second preset value.

[0586] In some embodiments, the first preset value can include, but is not limited to, any one of the following: "barred", "true" or "1", "supported", "performed", and the second preset value can include, but is not limited to, any one of the following: "not barred", "false", "0", "not supported", "not performed".

[0587] In some embodiments, the first indication information can 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.

[0588] In some embodiments, the first indication information can be represented by 1 bit, for example, the value of the bit can be "allowed" or "barred", wherein the terms "allowed" and "not barred" can be replaced with each other, and the terms "barred" and "rejected" can be replaced with each other.

[0589] It can be understood that if the value of the bit is "allowed" or "not barred", it means that the cell allows NTN connection; if the value of the bit is "barred" or "rejected", it means that the cell prohibits NTN connection.

[0590] In some embodiments, the first indication information can be an NTN cell barred parameter (cellBarredNTN) in SIB1.

[0591] In some embodiments, the second indication information can include, but is not limited to, any one of the following: cellBarredDTX, cellBarredDRX, cellBarredDTXDRX, and cellBarredDLcov_enh.

[0592] In the cellBarredDTX and the cellBarredDTXDRX, "DTX" represents "Discontinuous Transmission"; in the cellBarredDRX and the cellBarredDTXDRX, "DRX" represents "Discontinuous Reception"; in the cellBarredDLcov_enh, "DLcov_enh" represents "Downlink Coverage Enhancement".

[0593] In some embodiments, the terminal device can further perform the following steps: determining whether the cell supports downlink coverage enhancement; or determining whether the cell performs downlink coverage enhancement.

[0594] In some embodiments, the terminal device can determine whether the cell supports downlink coverage enhancement according to the second indication information; or the terminal device can determine whether the cell performs downlink coverage enhancement according to the second indication information.

[0595] In some embodiments, determining whether the cell supports downlink coverage enhancement can also be expressed as: determining whether the cell supports downlink coverage enhancement or does not support downlink coverage enhancement.

[0596] In some embodiments, determining whether the cell performs downlink coverage enhancement can also be expressed as: determining whether the cell performs downlink coverage enhancement or does not perform downlink coverage enhancement.

[0597] In some embodiments, the terminal device can further determine that the cell supports downlink coverage enhancement based on the first configuration condition.

[0598] In some embodiments, the first configuration condition for determining that the cell supports downlink coverage enhancement can include at least one of the following: supporting a hop-beam mechanism; supporting a discontinuous reception (DRX) mechanism on the network side; providing a DRX configuration; supporting a discontinuous transmission (DTX) mechanism on the network side; providing a DTX configuration; supporting synchronization signal and physical broadcast channel block (SSB) cycle extension; and providing configuration information of the SSB cycle extension.

[0599] In some embodiments, the terminal device can further determine that the cell performs downlink coverage enhancement based on the second configuration condition.

[0600] In some embodiments, determining that the second configuration condition of the cell performing downlink coverage enhancement can comprise at least one of: performing a beam hopping mechanism; performing a discontinuous reception (DRX) mechanism at a network side; providing a DRX configuration; performing a discontinuous transmission (DTX) mechanism at the network side; providing a DTX configuration; performing a synchronization signal and physical broadcast channel block (SSB) cycle extension; providing configuration information of the SSB cycle extension.

[0601] In some embodiments, the terminal device can further determine, based on a third configuration condition, that the cell does not support downlink coverage enhancement.

[0602] In some embodiments, the third configuration condition of determining that the cell does not support downlink coverage enhancement can comprise at least one of: not supporting a beam hopping mechanism; not supporting a discontinuous reception (DRX) mechanism at a network side; not providing a DRX configuration; not supporting a discontinuous transmission (DTX) mechanism at the network side; not providing a DTX configuration; not supporting a synchronization signal and physical broadcast channel block (SSB) cycle extension; not providing configuration information of the SSB cycle extension.

[0603] In some embodiments, the terminal device can further determine, based on a fourth configuration condition, that the cell does not perform downlink coverage enhancement.

[0604] In some embodiments, the fourth configuration condition of determining that the cell does not perform downlink coverage enhancement can comprise at least one of: not performing a beam hopping mechanism; not performing a discontinuous reception (DRX) mechanism at a network side; not providing a DRX configuration; not performing a discontinuous transmission (DTX) mechanism at the network side; not providing a DTX configuration; not performing a synchronization signal and physical broadcast channel block (SSB) cycle extension; not providing configuration information of the SSB cycle extension.

[0605] In some embodiments, the SSB cycle extension refers to an extension of a SSB cycle configured by the network device, and if the SSB cycle configured by the network device is greater than a preset threshold, it indicates that the SSB cycle has been extended. For example, the preset threshold is 160 milliseconds (ms), and if the SSB cycle is 320 ms or 640 ms, it indicates that the SSB cycle has been extended.

[0606] In some embodiments, “not providing configuration information of the SSB cycle extension” refers to that the network device does not provide configuration information of the SSB cycle extension, and the configuration information can include a value range of the SSB cycle, and the value range can include multiple values of the SSB cycle, each of which is greater than a preset threshold.

[0607] In some embodiments, the DRX configuration can comprise at least one of: a DRX configuration corresponding to a beam; a DRX configuration corresponding to a cell; a DRX configuration corresponding to a geographic area.

[0608] In some embodiments, the beam can be a satellite beam, an SSB beam, or a Channel State information-Reference Signal (CSI-RS) beam.

[0609] In some embodiments, the number of beams can be one or more.

[0610] In some embodiments, the DRX configuration corresponding to the beam means that the DRX configuration can be a beam-level DRX configuration; the DRX configuration corresponding to the cell means that the DRX configuration can be a cell-level DRX configuration; and the DRX configuration corresponding to the geographic area means that the DRX configuration can be a geographic area-level DRX configuration.

[0611] The beam-level DRX configuration means that the DRX can be configured for a specific beam, the cell-level DRX configuration means that the DRX can be configured for the entire cell range, and the geographic area-level DRX configuration means that the DRX can be configured for a specific geographic area.

[0612] The specific geographic area can include any one of the following types of areas: a regular-shaped area and an irregular-shaped area. The regular shape can be a geometric shape with symmetry and uniformity, for example, the regular shape can include a circle or a polygon; the irregular shape can be any shape other than the regular shape.

[0613] In some embodiments, the specific geographic area can be a circular area, and the parameters of the circular area can include information of a reference point and a radius, and the information of the reference point can include longitude and latitude. For example, the reference point can be the center of the circular area.

[0614] In some embodiments, the specific geographic area can be a polygonal area, and the parameters of the polygonal area can include information of a plurality of reference points, and the information of each reference point can include longitude and latitude of the reference point. For example, the plurality of reference points can be a plurality of vertices of the polygon.

[0615] In some embodiments, the DRX configuration can be used to indicate at least one of the following:

[0616] In the duration when the beam is in the first state, the first state is that the beam is in the "off state, i.e., the beam cannot receive any signal. It can be understood that in the case where the beam is in the first state, the terminal device cannot send any message.

[0617] In the duration that the beam is in the second state, wherein the second state is that the beam is in a "receiving only partial signal" state, e.g., the beam can only receive an uplink-common control channel-message (UL-CCCH-Message) transmitted on an uplink. It can be understood that in the case that the beam is in the second state, the terminal device can only initiate a random access procedure triggered by any one of the following operations: connection establishment, connection recovery, connection reestablishment, or system information request.

[0618] In the duration that the beam is in the third state, wherein the third state is that the beam is in an "active traffic" state, i.e., the beam can receive downlink signaling, uplink signaling, and data. In the case that the beam is in the third state, the terminal device can transmit downlink signaling, uplink signaling, and data.

[0619] In some embodiments, the DTX configuration can include at least one of: a DTX configuration corresponding to the beam; a DTX configuration corresponding to the cell; a DTX configuration corresponding to the geographic area.

[0620] In some embodiments, the DTX configuration corresponding to the beam means that the DTX configuration can be a beam-level DTX configuration; the DTX configuration corresponding to the cell means that the DTX configuration can be a cell-level DTX configuration; and the DTX configuration corresponding to the geographic area means that the DTX configuration can be a geographic area-level DTX configuration.

[0621] The beam-level DTX configuration means a DTX that can be configured for a specific beam, the cell-level DTX configuration means a DTX that is configured for the entire cell range, and the geographic area-level DTX configuration means a DTX that is configured for a specific geographic area.

[0622] In some embodiments, the DTX configuration can be used to indicate at least one of:

[0623] In the duration that the beam is in the N1 state, wherein the N1 state is that the beam footprint is in an "off" state, i.e., the beam footprint is not served by any signal, in other words, there is no satellite service in this area. It can be understood that in the case that the beam is in the N1 state, the terminal device cannot receive any message.

[0624] In the duration that the beam is in the N2 state, wherein the N2 state is that the beam footprint is in a "only common message" state, i.e., the beam footprint has no active user traffic. It can be understood that in the case that the beam is in the N2 state, the network device can use the beam to send common messages (e.g., necessary information for cell search and initial access), and the terminal can receive common messages (e.g., system information).

[0625] In the duration that the beam is in the N3 state, wherein the N3 state is that the beam footprint is in the "active traffic" state, i.e., there is at least one active device (e.g., a device conducting a high-definition voice over new radio (VoNR) service) on the beam footprint. It can be understood that in the case that the beam is in the N3 state, the network device can send any message (e.g., including cell search and initial access to provide necessary information) using the beam, and the terminal device can receive any message (e.g., including uplink signaling, downlink signaling, and data).

[0626] In some embodiments, the common message can be acquired by any terminal device within the coverage area of the beam, and the common message can include necessary information for cell discovery, radio resource control (RRC) connection establishment, and RRC connection recovery of the terminal device. For example, the common message can include system broadcast messages and emergency notifications, etc., wherein the system broadcast messages can include network identification, time synchronization information, and system configuration parameters, etc., and the emergency notifications can include natural disaster warnings or public safety alerts, etc.

[0627] In some embodiments, the any message can include necessary information for cell discovery, RRC connection establishment, and RRC connection recovery of the terminal device, and the any message can further include uplink signaling, downlink signaling, and data, etc.

[0628] S302, the terminal device determines the cell state of the cell according to the first indication information or the second indication information.

[0629] The cell state can include a prohibited state or a non-prohibited state.

[0630] The cell state can be used by the terminal device to determine whether the terminal device is allowed to access the cell.

[0631] In some embodiments, if the cell state of the cell is the non-prohibited state, it indicates that the cell allows the terminal device to access or camp.

[0632] In some embodiments, if the cell state of the cell is the prohibited state, it can be further determined according to the device type of the terminal device whether the terminal device can camp or access the cell to acquire restricted services.

[0633] In some embodiments, if the state of the cell is the prohibited state, the terminal device will not be allowed to select the cell in the cell selection and cell reselection process, and the terminal device should select other cells except the cell.

[0634] In some embodiments, the operator can implement cell reservations or access restrictions based on a mechanism that allows the use of cell state indication and special reservation indication to control the cell selection and reselection procedure.

[0635] Based on this mechanism, the network device can send cell state indication information to the terminal device, which can be carried by the Master Information Block (MIB) or SIB1 message, and the cell state indication information can include the following two parameters:

[0636] The first parameter: cellBarred.

[0637] The first parameter can be carried in the MIB, and the type of the information element (IE) of the first parameter can include "barred" or "not barred". In the case where multiple PLMNs or multiple NPNs are indicated in the SIB1, the first parameter can be common to the multiple PLMNs or the multiple NPNs. If the SIB1 carries the second parameter, the terminal device can ignore the first parameter.

[0638] The second parameter: cellBarredNTN.

[0639] The second parameter can be carried in the SIB1, and the type of the information element (IE) of the second parameter can include "barred" or "not barred". In the case where multiple PLMNs or multiple NPNs are indicated in the SIB1, the second parameter is common to the multiple PLMNs or the multiple NPNs. If the terminal device does not support NTN access, the terminal device can ignore the second parameter.

[0640] If the terminal device is in any of the following states: radio resource control idle state (RRC_IDLE), radio resource control inactive state (RRC_INACTIVE), and radio resource control connected state (RRC_CONNECTED) with T311 timer running, the terminal device can determine the cell state of the cell in the following manner when the terminal device acquires the MIB or SIB:

[0641] (1) If the terminal device does not support NTN access or does not have NTN capability, and the type of the IE cellBarred in the MIB acquired by the terminal device is "barred", the terminal device determines that the cell state of the cell is barred.

[0642] (2) If the terminal device supports NTN access or has NTN capability, the terminal device ignores the type of the IE cellBarred in the acquired MIB being "barred"; and the terminal device can determine the cell state based on the cellBarredNTN in the SIB1.

[0643] (3) If the terminal device supports NTN access or has NTN capability, and the type of the IE cellBarredNTN in the acquired SIB1 is "barred" or the acquired SIB1 does not include cellBarredNTN, the terminal device determines that the cell state of the cell is barred.

[0644] In some embodiments, the cell state of the cell can be determined according to the first indication information; or the cell state of the cell can be determined according to the second indication information.

[0645] In some embodiments, the terminal device can determine the cell state of the cell according to the device type of the terminal device and the first indication information; or the terminal device can determine the cell state of the cell according to the device type of the terminal device and the second indication information.

[0646] In some embodiments, the device type of the terminal device can include at least one of the following:

[0647] The first device type, the terminal device of the first device type supports downlink coverage enhancement. It should be noted that if the terminal device supports downlink coverage enhancement, the terminal device must be able to support acquiring the second indication information. For example, the terminal device of the first device type can be a NTN terminal of the nineteenth release (Release 19) of the third generation partnership project (3GPP) that supports downlink coverage enhancement.

[0648] The second device type, the terminal device of the second device type does not support downlink coverage enhancement and supports acquiring the second indication information. For example, the terminal device of the second device type can be a NTN terminal device of the 3GPP Release 19 that does not support downlink coverage enhancement.

[0649] 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. For example, the terminal device of the third device type can be an NTN terminal device before 3GPP Release 19, and the terminal device of the third device type can be a terminal device of a seventeenth generation version (Release 17) or an eighteenth generation version (Release 18) of 3GPP.

[0650] It should be noted that the terminal devices of the first device type, the second device type, and the third device type all support NTN access.

[0651] In some embodiments, the "supporting obtaining the second indication information" can be mutually replaced with the terms such as "supporting identifying the second indication information", and the "supporting obtaining the second indication information" herein indicates that the terminal device can support obtaining and identifying the second indication information.

[0652] In some embodiments, the "not supporting obtaining the second indication information" can be mutually replaced with the terms such as "not supporting identifying the second indication information", and the "not supporting obtaining the second indication information" herein can be used to indicate that the terminal device does not support obtaining the second indication information, or the terminal device supports obtaining the second indication information but does not support identifying the second indication information.

[0653] In some embodiments, in a case where the terminal device receives the first indication information, the terminal device can receive the second indication information.

[0654] In some embodiments, in a case where the terminal device receives the second indication information, the first indication information can be used to indicate that the cell prohibits NTN connection.

[0655] In some embodiments, in a case where the first indication information exists, the second indication information exists; and / or, in a case where the second indication information exists, the first indication information is used to indicate that the cell prohibits NTN connection.

[0656] In some embodiments, if the network device can provide the first indication information (or the second indication information) so that the terminal device can obtain the first indication information (or the second indication information), it indicates that the first indication information (or the second indication information) exists; if the network device does not provide the first indication information (or the second indication information), so that the terminal device cannot obtain the first indication information (or the second indication information), it indicates that the first indication information (or the second indication information) does not exist.

[0657] In some embodiments, the "first indication information exists" can be mutually replaced with the terms such as "the network device provides the first indication information" or "the terminal device receives the first indication information".

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

[0659] In some embodiments, the presence of the first indication information can be used to indicate that the cell allows NTN connection; the absence of the first indication information can be used to indicate that the cell prohibits NTN connection.

[0660] In some embodiments, the “second indication information present” can be mutually replaced with the terms such as “the network device provides the second indication information” or “the terminal device receives the second indication information”.

[0661] 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 performs downlink coverage enhancement; the cell does not perform downlink coverage enhancement.

[0662] In some embodiments, the presence of the second indication information can be used to indicate that the cell supports downlink coverage enhancement, or the cell performs 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 the cell does not perform downlink coverage enhancement.

[0663] In some embodiments, the cell supporting downlink coverage enhancement can be used to indicate that the cell has the function of supporting downlink coverage enhancement; or, the cell has the function of supporting downlink coverage enhancement, and the cell performs the function of downlink coverage enhancement.

[0664] In some embodiments, the cell not supporting downlink coverage enhancement can be used to indicate that the cell does not have the function of supporting downlink coverage enhancement; or, the cell has the function of supporting downlink coverage enhancement, and the cell does not perform the function of downlink coverage enhancement.

[0665] In some embodiments, the cell performing downlink coverage enhancement can be used to indicate that the cell has the function of supporting downlink coverage enhancement, and the cell performs the function of downlink coverage enhancement.

[0666] In some embodiments, the cell not performing downlink coverage enhancement can be used to indicate that the cell has the function of supporting downlink coverage enhancement, and the cell does not perform the function of downlink coverage enhancement.

[0667] In some embodiments, the following manner can be adopted to determine the cell state of the cell according to the first indication information:

[0668] If the first indication information indicates that the cell allows NTN connection, or the first indication information is the third preset value, the terminal device supporting NTN access can determine that the cell state of the cell is a non-prohibited state. At this time, the terminal device can camp on or access the cell.

[0669] If the first indication information indicates that the cell prohibits NTN connection, or the first indication information is the fourth preset value, the terminal device supporting NTN access can further determine the cell state of the cell according to the device type.

[0670] In some embodiments, the second indication information can be applicable only to the terminal device supporting NTN access. If the terminal device does not support NTN access, the terminal device can ignore the second indication information.

[0671] In some embodiments, the second indication information can be applicable only to the terminal device of the first device type, or the second indication information can be applicable only to the terminal device of the first device type and the second device type.

[0672] In some embodiments, in the case where the second indication information is applicable only to the terminal device of the first device type, the terminal device of other device types than the first device type can ignore the second indication information. For example, the terminal device of the second device type and the third device type can ignore the second indication information.

[0673] In some embodiments, in the case where the second indication information is applicable only to the terminal device of the first device type and the second device type, the terminal device of other device types than the first device type and the second device type can ignore the second indication information. For example, the terminal device of the third device type can ignore the second indication information.

[0674] In the access control method provided in the present application, the terminal device can interact with the network device to obtain the first indication information and the second indication information, and determine the cell state of the cell according to the first indication information or the second indication information, which can be used by the terminal device to determine whether it is allowed to access the cell. By determining the cell state of the cell, the terminal device can obtain normal service in the cell when the cell state is determined to be a non-prohibited state, and the terminal device can also obtain limited service in the cell when the cell state is determined to be a prohibited state and some preset conditions are met, thereby avoiding the network device rejecting the service request of the terminal device, which is beneficial to shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also reduce the repeated access operations of the terminal device, which is beneficial to reduce the resource consumption of the terminal device.

[0675] In some embodiments, in the case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, i.e., in the case where 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 shown in the embodiment of FIG. 4. FIG. 4 is an exemplary schematic diagram two of an access control method according to an embodiment of the present application.

[0676] As shown in FIG. 4, the access control method includes the following steps.

[0677] S401. The network device sends first indication information and second indication information of a cell to a terminal device.

[0678] The device type of the terminal device is a second device type, that is, the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information.

[0679] It should be noted that the specific execution process of step S401 can refer to the specific execution process of step S301, which will not be described here.

[0680] S402. The terminal device determines the cell state of the cell according to the first indication information.

[0681] In some embodiments, in the case of determining the cell state of the cell according to the first indication information, the terminal device can ignore the second indication information, or the terminal device can ignore the cell barring identifier in the MIB obtained by the terminal device.

[0682] The cell barring identifier can be cellBarred in the MIB.

[0683] In some embodiments, if the first indication information is used to indicate that the cell allows NTN connection, the terminal device of the second device type can determine that the cell state of the cell is a non-barring state; if the first indication information is used to indicate that the cell prohibits NTN connection, the terminal device of the second device type can determine that the cell state of the cell is a barring state.

[0684] In the case of determining that the cell state of the cell is a barring state according to the first indication information, the method can further include step S403 as follows.

[0685] S403. The terminal device determines that the cell is an acceptable cell in the case of determining that the cell state is a barring state and satisfying a first preset judgment condition.

[0686] The first preset judgment condition can include at least one of the following conditions:

[0687] The first indication information indicates that the cell prohibits NTN connection;

[0688] The terminal device receives the second indication information;

[0689] The second indication information indicates that the cell supports downlink coverage enhancement;

[0690] The second indication information indicates that the cell has performed downlink coverage enhancement;

[0691] The cell supports downlink coverage enhancement;

[0692] The cell performs downlink coverage enhancement;

[0693] The cell selection criterion of the cell is met;

[0694] The cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state is a barred state;

[0695] The cell supports providing emergency bearer service for a terminal device in a limited service state.

[0696] It should be noted that the related content of "the terminal device receives second indication information", "the cell supports downlink coverage enhancement" and "the cell performs downlink coverage enhancement" in this step can refer to the related content of "the terminal device receives second indication information", "the cell supports downlink coverage enhancement" and "the cell performs downlink coverage enhancement" in the embodiment of FIG. 3, and will not be described here.

[0697] In some embodiments, the acceptable cell can be used to provide a limited service for the terminal device, for example, the limited service can include initiating an emergency call, receiving Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) notifications.

[0698] In some embodiments, the cell selection criterion can be used in the cell selection and cell reselection process of the terminal device.

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

[0700] In some embodiments, the cell selection criterion can be R criterion.

[0701] In some embodiments, the network device can send third indication information to the terminal device, and the third indication information can be used to indicate that the cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state is a barred state.

[0702] In some embodiments, the third indication information can be represented as "barringExemptEmergencyCall".

[0703] In some embodiments, the third indication information can be represented by 1 bit. If the bit exists and the value of the bit is a fifth preset value, the third indication information is used to indicate that the cell allows the terminal device to perform emergency bearer service in the case that the terminal device determines that the cell state is the barred state; if the bit does not exist or the value of the bit 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 service in the case that the terminal device determines that the cell state is the barred state.

[0704] For example, the "bit exists" means that the terminal device can obtain the third indication information.

[0705] For example, the fifth preset value can be, but is not limited to, any one of the following: "allowed", "true" or "1".

[0706] For example, the sixth preset value can be, but is not limited to, any one of the following: "barred", "not allowed", "false" or "0".

[0707] In some embodiments, the network device can send fourth indication information to the terminal device, and the fourth indication information can be used to indicate that the cell supports providing emergency bearer service for the terminal device in the limited service state.

[0708] In some embodiments, the fourth indication information can be represented as "ims-EmergencySupport".

[0709] It can be understood that, in the case that the terminal device is in the limited service state, the operation of the terminal device can include: initiating an emergency call, and receiving ETWS and CMAS notifications.

[0710] It should be noted that the access control method involved in the embodiments of the present application can include at least one of steps S401-S403.

[0711] In some embodiments, step S403 is optional, and in different embodiments, the step can be omitted or replaced. For example, steps S401 and S402 can be implemented as independent embodiments; steps S401-S403 can be implemented as independent embodiments.

[0712] In the access control method in the embodiments of the present application, after the terminal device acquires the first indication information and the second indication information, the terminal device can determine the cell state of the cell according to the first indication information. By determining the cell state of the cell, the terminal device can acquire normal service in the cell in the case where the terminal device determines that the cell state is a non-prohibited state. For the cell supporting or performing downlink coverage enhancement, in the case where the terminal device of the second device type determines that the cell state is a prohibited state and the first preset judgment condition is met, 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 on the cell to acquire limited service, avoid the network device rejecting the limited service initiated by the terminal device, and guarantee the normal execution of the limited service of the terminal device of the second device type, which is beneficial to shortening the receiving or initiating time length of the limited service of the terminal device of the second device type and improving the user experience of the terminal device.

[0713] In some embodiments, in the case where the terminal device does not support downlink coverage enhancement and supports acquiring the second indication information, that is, in the case where 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 shown in the embodiment of FIG. 5. FIG. 5 is an exemplary schematic diagram three of an access control method according to an embodiment of the present application.

[0714] As shown in FIG. 5, the access control method can include the following steps:

[0715] S501. The network device sends the first indication information and the second indication information of the cell to the terminal device.

[0716] It should be noted that the specific execution process of step S501 can refer to the specific execution process of step S301, which will not be repeated here.

[0717] S502. The terminal device determines the cell state of the cell according to the second indication information.

[0718] In some embodiments, in the case where the cell state of the cell is determined according to the second indication information, the terminal device can ignore the first indication information, or the terminal device can ignore the cell prohibited access identifier in the master information block (MIB) acquired by the terminal device.

[0719] In some embodiments, if the second indication information indicates that the cell supports downlink coverage enhancement or the cell performs downlink coverage enhancement, the terminal device of the second device type can determine that the cell state of the cell is the non-prohibited state; if the second indication information indicates that the cell does not support downlink coverage enhancement or the cell does not perform downlink coverage enhancement, the terminal device of the second device type can determine that the cell state of the cell is the prohibited state.

[0720] S503, in a case where it is determined that the cell state is the non-prohibited state and the second preset judgment condition is met, the terminal device determines that the cell is a candidate cell in the cell selection and cell reselection process.

[0721] In some embodiments, the second preset judgment condition can include that the cell is not reserved for an operator, the cell is not used for other purposes, and the cell is not used for future purposes.

[0722] In some embodiments, the cell not being reserved for an operator means that there is no resource reserved for an operator in the cell.

[0723] In some embodiments, the cell not being used for other purposes means that the resources in the cell can be used for a specified communication service and will not be occupied by other communication services other than the specified communication service.

[0724] In some embodiments, the cell not being used for future purposes means that there is no resource reserved for possible future needs or purposes in the cell.

[0725] It should be noted that the access control method involved in the embodiments of the present application can include at least one of steps S501-S503.

[0726] In some embodiments, step S503 is optional and can be omitted or replaced in different embodiments. For example, step S501 and step S502 can be implemented as independent embodiments; step S502 and step S503 can be implemented as independent embodiments; and steps S501-S503 can be implemented as independent embodiments.

[0727] In the access control method in the embodiments of the present application, for a cell that supports or performs downlink coverage enhancement, in a case where the terminal device of the second device type determines that the cell state is the non-prohibited state, the terminal device 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.

[0728] In some embodiments, in a case that the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information, i.e., in a case that the terminal device is a terminal device of the second device type, the terminal device can further perform an access control method as shown in the embodiment of FIG. 6. FIG. 6 is an example of a fourth schematic diagram of an access control method according to an embodiment of the present application.

[0729] As shown in FIG. 6, the access control method can include the following steps:

[0730] S601, determining whether the cell is a suitable cell according to the first preset condition and the second preset condition.

[0731] In some embodiments, in a case that the first preset condition and the second preset condition are met, it is determined that the cell is a suitable cell; and / or in a case that the first preset condition and / or the second preset condition is not met, it is determined that the cell is not a suitable cell.

[0732] In some embodiments, in a case that the device type of the terminal device is the first device type and the second device type, the first preset condition can include any of the following:

[0733] the terminal device receives the second indication information and the terminal device supports the downlink coverage enhancement;

[0734] the terminal device receives the second indication information and the second indication information indicates that the cell supports the downlink coverage enhancement and the terminal device supports the downlink coverage enhancement;

[0735] the terminal device receives the second indication information and the second indication information indicates that the cell performs the downlink coverage enhancement and the terminal device supports the downlink coverage enhancement;

[0736] the cell supports the downlink coverage enhancement and the terminal device supports the downlink coverage enhancement;

[0737] the cell performs the downlink coverage enhancement and the terminal device supports the downlink coverage enhancement.

[0738] In some embodiments, in a case that the device type of the terminal device is the third device type, the first preset condition can include any of the following:

[0739] the terminal device does not receive the second indication information;

[0740] the cell does not support the downlink coverage enhancement;

[0741] the cell does not perform the downlink coverage enhancement.

[0742] In some embodiments, the first preset condition can further include any of the following conditions:

[0743] Condition 1: the second indication information is absent, or the second indication information is present and the terminal device supports downlink coverage enhancement;

[0744] Condition 2: the second indication information is absent, or the second indication information is present and the second indication information indicates that the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0745] Condition 3: the second indication information is absent, or the second indication information is present and the second indication information indicates that the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0746] 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;

[0747] Condition 5: the cell does not perform downlink coverage enhancement, or the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0748] In some embodiments, the second preset condition can include:

[0749] The at least one network included in the cell broadcast in the preset network, 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, and a network equivalent to the network registered by the terminal device.

[0750] The cell selection criterion is met;

[0751] The cell state of the cell is a non-prohibited state;

[0752] The at least one tracking area (TA) broadcast by the cell meets the following condition: the TA is not included in the roaming prohibited tracking area list, and the preset network includes a network to which the TA belongs.

[0753] In some embodiments, the network selected by the terminal device can include a PLMN or a standalone non-public network (SNPN), the network registered by the terminal device can include a PLMN or a SNPN, and the network equivalent to the network selected by the terminal device can also include a PLMN or a SNPN. The network equivalent to the network registered by the terminal device can also include a PLMN or a SNPN.

[0754] In some embodiments, the roaming prohibited tracking area list can include a plurality of tracking areas, which are tracking areas that the terminal device is not allowed to enter in a roaming state.

[0755] In some embodiments, the roaming forbidden tracking area list can be pre-stored for the terminal device, or can be configured for the terminal device by the core network corresponding to the terminal device.

[0756] It can be understood that the at least one network broadcast by the cell can include a network to which the TA belongs, and the network to which the TA belongs can include a PLMN or a SNPN.

[0757] It should be noted that the related contents of "the terminal device receiving the second indication information", "the second indication information not existing", "the second indication information existing", "the cell supporting downlink coverage enhancement", and "the cell performing downlink coverage enhancement" in this step can refer to the related contents of "the terminal device receiving the second indication information", "the second indication information not existing", "the second indication information existing", "the cell supporting downlink coverage enhancement", and "the cell performing downlink coverage enhancement" in the embodiment of FIG. 3, and the content of "the cell selection criterion" in this step can refer to the content of "the cell selection criterion" in step S403, which will not be described herein again.

[0758] S602, in a case where it is determined that the cell is not a suitable cell and the third preset judgment condition is met, determining that the cell is an acceptable cell.

[0759] In some embodiments, the third preset judgment condition can include that the cell state of the cell is a non-forbidden state, and the cell selection criterion is met.

[0760] The access control method provided by the embodiments of the present application can be used for the terminal device to quickly determine whether the cell is a suitable cell based on the first preset condition and the second preset condition, and in a case where it is determined that the cell is a suitable cell, the terminal device can acquire normal service in the cell. In a case where it is determined that the cell is not a suitable cell and the third preset judgment condition 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 on the cell to acquire limited service, avoid the network device rejecting the service request of the terminal device, be beneficial to shortening the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also can reduce the repeated initiation of access and other operations of the terminal device, which is beneficial to reducing the resource consumption of the terminal device.

[0761] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports acquiring the second indication information, i.e., in a case where 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 shown in the embodiment of FIG. 7, which is an example of a kind of access control method according to the embodiments of the present application.

[0762] As shown in FIG. 7, the access control method includes the following steps:

[0763] S701, the network device sends first indication information and second indication information of a cell to a terminal device.

[0764] The device type of the terminal device is a second device type, that is, the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information.

[0765] It should be noted that the specific execution process of step S701 can refer to the specific execution process of step S301, which will not be repeated here.

[0766] S702, the terminal device determines a cell state of the cell according to the second indication information.

[0767] It should be noted that the specific execution process of step S702 can refer to the specific execution process of step S502, which will not be repeated here.

[0768] S703, the terminal device determines that the cell is an acceptable cell in a case where the cell state is determined to be a prohibited state and a fourth preset judgment condition is met.

[0769] In some embodiments, the fourth preset judgment condition can include at least one of the following:

[0770] The terminal device receives the second indication information;

[0771] The second indication information indicates that the cell supports downlink coverage enhancement;

[0772] The second indication information indicates that the cell performs downlink coverage enhancement;

[0773] The cell supports downlink coverage enhancement;

[0774] The cell performs downlink coverage enhancement.

[0775] It should be noted that the related content of "the terminal device receives the second indication information", "the cell supports downlink coverage enhancement" and "the cell performs downlink coverage enhancement" in this step can refer to the related content of "the terminal device receives the second indication information", "the cell supports downlink coverage enhancement" and "the cell performs downlink coverage enhancement" in the embodiment of FIG. 3, which will not be repeated here.

[0776] It should be noted that the access control method involved in the embodiments of the present application can include at least one of steps S701-S703.

[0777] In some embodiments, step S703 is optional, and in different embodiments, this step can be omitted or replaced. For example, step S701 and step S702 can be implemented as independent embodiments; steps S701-S703 can be implemented as independent embodiments; and step S702 and step S703 can be implemented as independent embodiments.

[0778] In the access control method in the embodiments of the present application, after the terminal device of the second device type acquires the first indication information and the second indication information, the terminal device can determine the cell state of the cell according to the second indication information. By determining the cell state of the cell, the terminal device can acquire normal service in the cell when it is determined that the cell state is a non-prohibited state, and the terminal device can also determine the cell as an acceptable cell when the cell state is a prohibited state and the third preset judgment condition is met, so that the terminal device can acquire limited service in the cell, avoiding the network device rejecting the service request of the terminal device, which is beneficial to shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also reduce the repeated initiation of access and other operations of the terminal device, which is beneficial to reduce the resource consumption of the terminal device.

[0779] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and supports acquiring the second indication information, i.e., in the case that 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 implemented as shown in the embodiment of FIG. 8. FIG. 8 is an example of a schematic diagram of an access control method according to an embodiment of the present application.

[0780] As shown in FIG. 8, the access control method can include the following steps:

[0781] S801, the network device sends the first indication information and the second indication information of the cell to the terminal device.

[0782] It should be noted that the specific execution process of step S801 can refer to the specific execution process of step 301, which will not be repeated here.

[0783] S802, in the case that the third preset condition is met, the terminal device determines the cell state of the cell according to the first indication information.

[0784] It should be noted that the specific execution process of "determining the cell state of the cell according to the first indication information" in this step can refer to the specific execution process of "determining the cell state of the cell according to the first indication information" in step S402, which will not be repeated here.

[0785] In some embodiments, the third preset condition can include at least one of the following:

[0786] the terminal device first detects the cell;

[0787] the terminal device first determines the cell state of the cell;

[0788] a number of times that the terminal device continuously detects the cell is less than or equal to a first threshold value;

[0789] a number of times that the terminal device continuously detects the cell within a first preset time length is less than or equal to a second threshold value;

[0790] a number of times that the terminal device continuously determines the cell state of the cell is less than or equal to a third threshold value;

[0791] a number of times that the terminal device continuously determines the cell state of the cell within a second preset time length is less than or equal to a fourth threshold value;

[0792] a time length between a current moment and a first moment is less than or equal to a first time threshold value, the first moment being a moment at which the terminal device first detects the cell;

[0793] a time length between the current moment and a second moment is less than or equal to a second time threshold value, the second moment being a moment at which the terminal device first determines the cell state of the cell;

[0794] a time length during which the terminal device is in an arbitrary cell selection state is less than or equal to a third time threshold value, the time length of the arbitrary cell selection state being a time length between the current moment and a starting moment at which the terminal device enters the arbitrary cell selection state;

[0795] the network device instructs the terminal device to determine the cell state based on the first indication information.

[0796] In some embodiments, the cell first detected by the terminal device can be referred to as a "first cell". The first cell can satisfy at least one of the following: the cell supports downlink coverage enhancement, the cell performs downlink coverage enhancement, and second indication information of the cell exists.

[0797] In some embodiments, "the terminal device first determines the cell state of the cell" can also be described as "the terminal device first determines the cell state of the first cell".

[0798] In some embodiments, the terminal device first determining the cell state of the cell can include the terminal device determining the cell state of the cell based on the first indication information.

[0799] In some embodiments, the number of times that the terminal device continuously detects the cell can include a number of times that the terminal device continuously detects the first cell.

[0800] In some embodiments, any one of the following parameters: the first threshold value, the first preset time length, the second threshold value, the third threshold value, the second preset time length, the fourth threshold value, the first time threshold value, the second time threshold value, and the third time threshold value, can be configured for the network device or agreed upon by the protocol.

[0801] In some embodiments, the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value can be the same or different. Optionally, the first threshold value and the second threshold value can be the same, and the third threshold value and the fourth threshold value can be the same; or the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value can be the same.

[0802] In some embodiments, the first preset time length and the second preset time length can be the same or different.

[0803] In some embodiments, at least two of the first time threshold value, the second time threshold value, and the third time threshold value can be the same or different.

[0804] In some embodiments, if multiple parameters are agreed upon by the protocol or configured for the network device, the terminal device can select one parameter from the multiple parameters based on a certain rule. For example, the terminal device can randomly select one parameter from the multiple parameters.

[0805] For example, the network device configures threshold value 1, threshold value 2, and threshold value 3, which can all be applicable to the determination of the “first threshold value”, the “second threshold value”, the “third threshold value”, and the “fourth threshold value” in the third preset condition. In the determination of the “first threshold value”, the “second threshold value”, the “third threshold value”, and the “fourth threshold value”, the terminal device can randomly select one of threshold value 1, threshold value 2, and threshold value 3.

[0806] In some embodiments, different probabilities can also be configured or agreed upon for each parameter, and the terminal device can select a parameter with a probability greater than a certain value.

[0807] For example, the protocol agrees upon threshold value 1, threshold value 2, and threshold value 3, and configures the use scenarios and probabilities of each threshold value, as shown in Table 1:

[0808] Table 1

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

[0810] For example, the first threshold value is 5, it is assumed that the terminal device detects the first cell for the first time to the third time, at this time, the terminal device records the number of times of continuously detecting the first cell as 3; the terminal device detects the second cell for the fourth time, at this time, the terminal device can clear the number of times of continuously detecting the first cell, so as to re-count next time; the terminal device detects the first cell for the fifth time, at this time, the terminal device needs to re-count from 1 when recording the number of times of continuously detecting the first cell, that is, the terminal device records the number of times of continuously detecting the first cell as 1.

[0811] In some embodiments, the second cell can satisfy at least one of the following: the cell does not support downlink coverage enhancement, the cell does not perform downlink coverage enhancement, and the second indication information of the cell does not exist.

[0812] In some embodiments, the number of times of continuously detecting the cell by the terminal device within the first preset time period can include the number of times of continuously detecting the first cell by the terminal device.

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

[0814] In an example, the timing starts from the first time when the terminal device detects a first cell, if the terminal device detects a second cell after continuously detecting 3 first cells, the terminal device needs to re-timing and re-counting when detecting the first cell next time.

[0815] In some embodiments, the number of times of continuously determining the cell state of the cell by the terminal device can include the number of times of continuously determining the cell state of the first cell by the terminal device.

[0816] In some embodiments, the terminal device continuously determines the cell state of the first cell can include that the terminal device continuously determines the cell state of the first cell based on the first indication information.

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

[0818] Case 1: It is assumed that the plurality of first cells continuously determined by the terminal device are the same cell.

[0819] For example, assuming that the plurality of first cells determined by the terminal device successively are cell 1, at time 1, the terminal device determines for the first time that the cell state of cell 1 is the forbidden state based on the first indication information, and within a preset time length (for example, 300 seconds) after time 1, cell 1 is excluded as a candidate cell for cell selection or cell reselection, and the number of times that 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 1 again based on the first indication information, and the number of times that 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 that the terminal device determines the cell state of the first cell will not increase.

[0820] In this case, the terminal device can adopt a recording manner according to the cell level of a certain cell, that is, the terminal device records the number of times of each cell (for example, cell 1 or cell 2) determined successively.

[0821] Case 2: Assuming that the plurality of first cells determined by the terminal device successively are 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 determines for the first time that the cell state of cell 1 is the forbidden state based on the first indication information, and within a preset time length (for example, 300 seconds) after time 1, cell 1 is excluded as a candidate cell for cell selection or cell reselection, and the number of times that 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, and the number of times that the terminal device determines the cell state of the first cell can be increased by 1 and recorded as 2. If at time 3, the terminal device determines the cell state of cell 3, the number of times that the terminal device determines the cell state of the first cell will not increase and will still be 1.

[0823] In this case, the terminal device can adopt a recording manner according to the cell level of a certain type of cell, that is, the terminal device records the number of times of each type of cell (for example, the first cell and the second cell) determined successively.

[0824] In some embodiments, the terminal device can be provided with a first timer, and the time length of the first timer can be a first time threshold.

[0825] In some embodiments, the terminal device starts to start the first timer from the first time. If the first timer is running normally, it can be determined that the time length between the current time and the first time is less than or equal to the first time threshold. If the first timer is overdue, it can be determined that the time length between the current time and the first time is greater than the first time threshold.

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

[0827] The terminal device detects the second cell;

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

[0829] The terminal device performs a cell reselection operation;

[0830] The device state of the terminal device switches to the RRC connected state.

[0831] In some embodiments, the terminal device can be provided with a second timer, and the second timer can be set to time for a second time threshold.

[0832] In some embodiments, the terminal device starts to start the second timer from the second time. If the second timer is running normally, it can be determined that the time length between the current time and the second time is less than or equal to the second time threshold; if the second timer is overdue, it can be determined that the time length between the current time and the second time is greater than the second time threshold.

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

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

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

[0836] The terminal device performs a cell reselection operation;

[0837] The device state of the terminal device switches to the RRC connected state.

[0838] In some embodiments, the terminal device can be provided with a third timer, and the third timer can be set to time for a third time threshold.

[0839] In some embodiments, the terminal device starts to start the third timer from the start time when the terminal device enters any cell selection state. If the third timer is running normally, it can be determined that the time length of the terminal device in the any cell selection state is less than or equal to the third time threshold; if the third timer is overdue, it can be determined that the time length of the terminal device in the any cell selection state is greater than the third time threshold.

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

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

[0842] The terminal device performs a cell selection operation.

[0843] The terminal device performs a cell reselection operation.

[0844] The device state of the terminal device is switched to the RRC connected state.

[0845] In some embodiments, the network device can send fifth indication information to the terminal device.

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

[0847] In some embodiments, the fifth indication information can 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 an example, if the bit exists and the value of the bit 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 state based on the first indication information; if the bit does not exist or the value of the bit 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 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.

[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 one of the following: "first indication information", "true" or "1".

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

[0853] S803, the terminal device determines that the cell is an acceptable cell when the cell state is determined to be the prohibited state and the first preset judgment condition is met.

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

[0855] In some embodiments, in a case where it is determined that the cell state is the barred state and the first preset judgment condition is not met, the terminal device can determine that the cell is not an acceptable cell.

[0856] S804, in a case where the fourth preset condition is met, the terminal device determines the cell state of the cell according to the second indication information.

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

[0858] The terminal device has detected the cell for the first time;

[0859] The terminal device has determined the cell state of the cell for the first time;

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

[0861] The number of times the terminal device has continuously detected the cell within a first preset time period is greater than or equal to a second threshold value;

[0862] The number of times the terminal device has continuously determined the cell state of the cell is greater than or equal to a third threshold value;

[0863] The number of times the terminal device has continuously determined the cell state of the cell within a second preset time period is greater than or equal to a fourth threshold value;

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

[0865] The time period between the current time and a second time is greater 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;

[0866] The time period during which the terminal device is in an arbitrary cell selection state is greater 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;

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

[0868] In some embodiments, the network device can send sixth indication information to the terminal device.

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

[0870] In some embodiments, the sixth indication information can 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 an example, if the bit exists and the value of the bit 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 state based on the second indication information; if the bit does not exist or the value of the bit 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 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.

[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 one of the following: "second indication information", "true" or "1".

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

[0876] It should be noted that the specific execution process of "determining the cell state of the cell according to the second indication information" in this step can refer to the specific execution process of "determining the cell state of the cell according to the second indication information" in step S502, which will not be repeated here.

[0877] S805, in the case where the terminal device determines that the cell state is the prohibited state and the fourth preset judgment condition is met, the terminal device determines that the cell is an acceptable cell.

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

[0879] In some embodiments, in the case where the terminal device determines that the cell state is the prohibited state and the third preset judgment condition is not met, the terminal device can determine that the cell is not an acceptable cell.

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

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

[0882] In the access control method in the embodiments of the present application, in the case of meeting the third preset condition, the terminal device of the second device type can determine the cell state of the cell according to the first indication information, in the case of determining that the cell state is the non-prohibited state, the terminal device can obtain normal service in the cell, and in the case of determining that the cell state of the cell is the prohibited state and meeting the first preset judgment condition, the terminal device can also determine the cell as an acceptable cell, so that the terminal device can obtain limited service in the cell, avoiding the network device rejecting the service request of the terminal device, which is beneficial to shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also can reduce the repeated initiation of access and other operations of the terminal device, which is beneficial to reduce the resource consumption of the terminal device.

[0883] In the case of meeting the fourth preset condition, the terminal device of the second device type can determine the cell state of the cell according to the second indication information, in the case of determining that the cell state is the non-prohibited state, the terminal device can obtain normal service in the cell, and in the case of determining that the cell state of the cell is the prohibited state and meeting the third preset judgment condition, the terminal device can also determine the cell as an acceptable cell, so that the terminal device can obtain limited service in the cell, avoiding the network device rejecting the service request of the terminal device, which is beneficial to shorten the time delay of the terminal device accessing the network device, improve the user experience of the terminal device, and also can reduce the repeated initiation of access and other operations of the terminal device, which is beneficial to reduce the resource consumption of the terminal device.

[0884] It should be noted that in some embodiments, the terms "determine", "think" and "judge" can be replaced with each other, for example, in some embodiments, "the terminal device determines that the cell is a suitable cell" can also be described as "the terminal device thinks that the cell is a suitable cell" or "the terminal device judges that the cell is a suitable cell".

[0885] It should be noted that the terms "operation", "behavior", "action" and the like can be replaced with each other, for example, in some embodiments, the "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, in the case that the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information, that is, in the case that the terminal device is a terminal device of the third device type, the interaction process between the terminal device and the network device can also be as shown in the embodiment of FIG. 9. FIG. 9 is an exemplary seventh schematic diagram of an access control method according to an embodiment of the present application.

[0887] As shown in FIG. 9, the access control method can include the following steps:

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

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

[0890] S902, the terminal device determines the cell state of the cell according to the first indication information.

[0891] The cell state is a prohibited state or a non-prohibited state.

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

[0893] In some embodiments, in the case of determining the cell state of the cell according to the first indication information, the terminal device of the third device type can ignore the second indication information, or the terminal device of the third device type can ignore the cell access prohibited identifier in the obtained MIB.

[0894] In the access control method provided in the embodiments of the present application, by determining the cell state of the cell, the terminal device of the third device type can avoid camping on or accessing the cell supporting downlink coverage enhancement, or can avoid camping on or accessing the cell performing downlink coverage enhancement, so that the terminal device of the third device type does not need to send an access request to the cell supporting downlink coverage enhancement or the cell performing 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, in a case that the terminal device supports downlink coverage enhancement, i.e., in a case that the terminal device is a terminal device of the first device type, the interaction procedure between the terminal device and the network device can also be as shown in the embodiment of FIG. 10, which is an eighth example of an access control method according to an embodiment of the present application.

[0896] As shown in FIG. 10, the access control method can include the following steps:

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

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

[0899] S1002. The terminal device determines the cell state of the cell according to the second indication information.

[0900] In some embodiments, in a case that the cell state of the cell is determined according to the second indication information, the terminal device of the first device type can ignore the first indication information, or the terminal device of the first device type can 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 performs downlink coverage enhancement, the terminal device of the first device type can determine that the cell state of the cell is a non-prohibited state; if the second indication information indicates that the cell does not support downlink coverage enhancement or the cell does not perform downlink coverage enhancement, the terminal device of the first device type can determine that the cell state of the cell is a prohibited state.

[0902] In the access control method provided in the embodiments of the present application, by determining the cell state of the cell, the terminal device of the first device type can camp on or access the cell supporting downlink coverage enhancement, or can camp on or access the cell performing downlink coverage enhancement, so as to guarantee that the terminal device of the first device type can normally acquire communication services in the cell, which is conducive to shortening the access delay of the terminal device to the network device and improving the user experience of the terminal device.

[0903] FIG. 11 is a structural schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus can be implemented by software and / or hardware. As shown in FIG. 11, the communication apparatus 1100 can include:

[0904] The transceiver module 1101 is configured to acquire 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.

[0905] The processing module 1102 is configured to determine a cell state of the cell according to the first indication information or the second indication information, the cell state including a forbidden state or a non-forbidden state, and the cell state being used by the terminal device to determine whether to be allowed to access the cell.

[0906] The communication apparatus 1100 provided in the embodiments of the present application is used to perform the method steps performed by the terminal device in the above-mentioned method embodiments, and has similar implementation principles and beneficial effects, which will not be repeated 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 performs downlink coverage enhancement.

[0909] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or,

[0910] The second indication information is used to indicate that the cell performs downlink coverage enhancement or does not perform downlink coverage enhancement.

[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 the cell performs downlink coverage enhancement;

[0913] The second preset value is used to indicate that the cell does not support downlink coverage enhancement or the cell does not perform downlink coverage enhancement.

[0914] In some embodiments, in a case where the terminal device receives the second indication information, the first indication information is used to indicate that the cell forbids NTN connection.

[0915] In some embodiments, in a case where the first indication information exists, the second indication information exists; and / or,

[0916] In a case where the second indication information exists, the first indication information is used to indicate that the cell forbids NTN connection.

[0917] In some embodiments, the transceiver module 1101 is specifically configured to:

[0918] Receive the second indication information sent by the network device.

[0919] In some embodiments, the second indication information is carried by system information.

[0920] In a case where the system information further comprises identities of a plurality of networks, the second indication information is used to indicate whether the plurality of networks support downlink coverage enhancement.

[0921] In some embodiments, the transceiver 1101 is specifically configured to:

[0922] receive system information sent by a network device, the system information comprising the second indication information.

[0923] In some embodiments, the system information further comprises identities of a plurality of 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 comprises 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 configured to:

[0928] determine a cell state of the cell according to a device type of the terminal device and the first indication information; or,

[0929] determine a cell state of the cell according to a device type of the terminal device and the second indication information.

[0930] In some embodiments, the device type comprises at least one of:

[0931] a first device type, terminal devices of the first device type supporting downlink coverage enhancement;

[0932] a second device type, terminal devices of the second device type not supporting downlink coverage enhancement and supporting obtaining the second indication information;

[0933] a third device type, terminal devices of the third device type not supporting downlink coverage enhancement and not supporting obtaining the second indication information.

[0934] In some embodiments, in a case where the terminal device does not support downlink coverage enhancement and supports obtaining the second indication information; the processing module 1102 is specifically configured to:

[0935] determine a cell state of the cell according to the first indication information.

[0936] In some embodiments, in a case that 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] determine a cell state of the cell according to the second indication information.

[0938] In some embodiments, in a case that 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] determine that the cell is a suitable cell in a case that a first preset condition and a second preset condition are met; and / or,

[0940] determine that the cell is not a suitable cell in a case that the first preset condition and / or the second preset condition is not met.

[0941] In some embodiments, the first preset condition comprises 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 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;

[0944] 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;

[0945] the cell supports downlink coverage enhancement and the terminal device supports downlink coverage enhancement;

[0946] the cell performs downlink coverage enhancement and the terminal device supports downlink coverage enhancement.

[0947] In some embodiments, the first preset condition comprises 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 criteria for selecting residential communities;

[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] In a case where a third preset condition is met, determining the cell state of the cell according to the first indication information;

[0967] In a case where a fourth preset condition is met, determining the cell state of the cell according to the second indication information.

[0968] In some embodiments, the third preset condition comprises at least one of the following:

[0969] The terminal device detects the cell for the first time;

[0970] The terminal device determines the cell state of the cell for the first time;

[0971] The number of times that the terminal device continuously detects the cell is less than or equal to a first threshold value;

[0972] In a first preset time length, the number of times that the terminal device continuously detects the cell is less than or equal to a second threshold value;

[0973] The number of times that the terminal device continuously determines the cell state of the cell is less than or equal to a third threshold value;

[0974] In a second preset time length, the number of times that the terminal device continuously determines the cell state of the cell is less than or equal to a fourth threshold value;

[0975] A time length between a current moment and a first moment is less than or equal to a first time threshold value, and the first moment is a moment when the terminal device detects the cell for the first time;

[0976] A time length between the current moment and a second moment is less than or equal to a second time threshold value, and the second moment is a moment when the terminal device determines the cell state of the cell for the first time;

[0977] A time length that the terminal device stays in an arbitrary cell selection state is less than or equal to a third time threshold value, and the time length that the terminal device stays in the arbitrary cell selection state is a time length between the current moment and a starting moment when the terminal device enters the arbitrary cell selection state;

[0978] The network device instructs the terminal device to determine the cell state based on the first indication information.

[0979] In some embodiments, the processing module 1102 is specifically further configured to:

[0980] In a case where the cell state is determined to be the prohibited state and at least one of the following conditions is met, determining that the cell is an acceptable cell:

[0981] The first indication information indicates that the cell prohibits NTN connection;

[0982] the terminal device receives second indication information;

[0983] the second indication information indicates that the cell supports downlink coverage enhancement;

[0984] the second indication information indicates that the cell performs downlink coverage enhancement;

[0985] the cell supports downlink coverage enhancement;

[0986] the cell performs downlink coverage enhancement;

[0987] a cell selection criterion of the cell is met;

[0988] the cell allows the terminal device to perform emergency bearer service in a case where the terminal device determines that the cell state of the cell is a prohibited state;

[0989] the cell supports providing emergency bearer service for a terminal device in a limited service state.

[0990] In some embodiments, in a case where the cell state of the cell is determined to be the prohibited state according to the first indication information; the processing module 1102 is specifically further configured to:

[0991] determine the cell to be an acceptable cell in a case where 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 performs downlink coverage enhancement;

[0994] the cell supports downlink coverage enhancement;

[0995] the cell performs downlink coverage enhancement;

[0996] a cell selection criterion of the cell is met;

[0997] the cell supports providing emergency bearer service in a prohibited state;

[0998] the cell supports providing emergency bearer service for a terminal device in a limited service state.

[0999] In some embodiments, the fourth preset condition includes at least one of the following:

[1000] the terminal device detects the cell for the first time;

[1001] the terminal device determines the cell state of the cell for the first time;

[1002] The number of times that the terminal device continuously detects the cell is greater than or equal to a first threshold value;

[1003] The number of times that the terminal device continuously detects the cell within a first preset time length is greater than or equal to a second threshold value;

[1004] The number of times that the terminal device continuously determines the cell state of the cell is greater than or equal to a third threshold value;

[1005] The number of times that the terminal device continuously determines the cell state of the cell within a second preset time length is greater than or equal to a fourth threshold value;

[1006] The time length between the current moment and a first moment is greater than or equal to a first time threshold value, and the first moment is the moment when the terminal device first detects the cell;

[1007] The time length between the current moment and a second moment is greater than or equal to a second time threshold value, and the second moment is the moment when the terminal device first determines the cell state of the cell;

[1008] The time length that the terminal device is in an arbitrary cell selection state is greater than or equal to a third time threshold value, and the time length of the arbitrary cell selection state is the time length between the current moment and the starting moment when the terminal device enters the arbitrary cell selection state;

[1009] The network device instructs the terminal device to determine the cell state based on the second indication information.

[1010] In some embodiments, in the case that the terminal device does not support downlink coverage enhancement and does not support obtaining the second indication information; the processing module 1102 is specifically further used for:

[1011] Determining the cell state of the cell according to the first indication information.

[1012] In some embodiments, in the case that the terminal device supports downlink coverage enhancement; the processing module 1102 is specifically further used for:

[1013] Determining the cell state of the cell according to the second indication information.

[1014] In some embodiments, the processing module 1102 is specifically further used for:

[1015] Determining whether the cell supports downlink coverage enhancement; or,

[1016] Determining whether the cell has performed downlink coverage enhancement.

[1017] In some embodiments, the cell supporting downlink coverage enhancement includes at least one of the following:

[1018] supports a beam hopping mechanism;

[1019] supports a discontinuous reception, DRX, mechanism at a network side;

[1020] provides a DRX configuration;

[1021] supports a discontinuous transmission, DTX, mechanism at a network side;

[1022] provides a DTX configuration;

[1023] supports a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1024] provides configuration information of the SSB cycle extension;

[1025] or

[1026] the cell performs downlink coverage enhancement including at least one of:

[1027] performs a beam hopping mechanism;

[1028] performs a discontinuous reception, DRX, mechanism at a network side;

[1029] provides a DRX configuration;

[1030] performs a discontinuous transmission, DTX, mechanism at a network side;

[1031] provides a DTX configuration;

[1032] performs a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1033] provides configuration information of the SSB cycle extension.

[1034] In some embodiments, the cell does not support downlink coverage enhancement including at least one of:

[1035] does not support a beam hopping mechanism;

[1036] does not support a discontinuous reception, DRX, mechanism at a network side;

[1037] does not provide a DRX configuration;

[1038] does not support a discontinuous transmission, DTX, mechanism at a network side;

[1039] does not provide a DTX configuration;

[1040] does not support a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1041] does not provide configuration information of the SSB cycle extension;

[1042] or

[1043] The cell does not perform downlink coverage enhancement includes at least one of:

[1044] A beam hopping mechanism is not performed;

[1045] A discontinuous reception, DRX, mechanism on the network side is not performed;

[1046] A DRX configuration is not provided;

[1047] A discontinuous transmission, DTX, mechanism on the network side is not performed;

[1048] A DTX configuration is not provided;

[1049] A synchronization signal and physical broadcast channel block, SSB, cycle extension is not performed;

[1050] Configuration information of the SSB cycle extension is not provided.

[1051] In some embodiments, the DRX configuration includes at least one of:

[1052] A DRX configuration corresponding to a beam;

[1053] A DRX configuration corresponding to a cell;

[1054] A DRX configuration corresponding to a geographical area.

[1055] In some embodiments, the DTX configuration includes at least one of:

[1056] A DTX configuration corresponding to a beam;

[1057] A DTX configuration corresponding to a cell;

[1058] A DTX configuration corresponding to a geographical area.

[1059] In some embodiments, the transceiver module 1101 is specifically configured to:

[1060] Receive first indication information and second indication information of the cell sent by a network device.

[1061] In some embodiments, in a case where a cell state of the cell is determined according to the first indication information, the second indication information is ignored; and / or, a cell barring identifier in a master information block, MIB, acquired by the terminal device is ignored.

[1062] In some embodiments, in a case where a cell state of the cell is determined according to the second indication information, the first indication information is ignored; and / or, a cell barring identifier in a master information block, MIB, acquired by the terminal device is ignored.

[1063] FIG. 12 is a second structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be implemented by software and / or hardware. As shown in FIG. 12, the communication apparatus 1200 can include:

[1064] a transceiver 1201, configured to send first indication information and second indication information of a cell to a terminal device, wherein the terminal device supports NTN access;

[1065] wherein the first indication information is used to indicate that 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.

[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 performs downlink coverage enhancement.

[1068] In some embodiments, the second indication information is used to indicate that the cell supports downlink coverage enhancement or does not support downlink coverage enhancement; or

[1069] the second indication information is used to indicate that the cell performs downlink coverage enhancement or does not perform downlink coverage enhancement.

[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 the cell performs downlink coverage enhancement;

[1072] the second preset value is used to indicate that the cell does not support downlink coverage enhancement or the cell does not perform downlink coverage enhancement.

[1073] In some embodiments, 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.

[1074] In some embodiments, the transceiver 1201 is specifically configured to:

[1075] send the second indication information to the terminal device.

[1076] In some embodiments, the second indication information is carried by system information.

[1077] In a case that the system information further comprises the identification of the plurality of networks, the second indication information is used to indicate whether the plurality of networks support downlink coverage enhancement.

[1078] In some embodiments, the device type of the terminal device comprises at least one of:

[1079] a first device type, terminal devices of the first device type support downlink coverage enhancement;

[1080] a second device type, terminal devices of the second device type do not support downlink coverage enhancement and support obtaining the second indication information;

[1081] a third device type, terminal devices of the third device type do not support downlink coverage enhancement and do not support obtaining the second indication information.

[1082] In some embodiments, the cell supporting downlink coverage enhancement comprises at least one of:

[1083] supporting a hopping beam mechanism;

[1084] supporting a discontinuous reception, DRX, mechanism on a network side;

[1085] providing a DRX configuration;

[1086] supporting a discontinuous transmission, DTX, mechanism on a network side;

[1087] providing a DTX configuration;

[1088] supporting a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1089] providing configuration information of the SSB cycle extension;

[1090] or

[1091] the cell performing downlink coverage enhancement comprises at least one of:

[1092] performing a hopping beam mechanism;

[1093] performing a discontinuous reception, DRX, mechanism on a network side;

[1094] providing a DRX configuration;

[1095] performing a discontinuous transmission, DTX, mechanism on a network side;

[1096] providing a DTX configuration;

[1097] performing a synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1098] providing configuration information of the SSB cycle extension.

[1099] In some embodiments, the cell does not support downlink coverage enhancement comprises at least one of:

[1100] does not support a beam hopping mechanism;

[1101] does not support a discontinuous reception, DRX, mechanism on the network side;

[1102] does not provide a DRX configuration;

[1103] does not support a discontinuous transmission, DTX, mechanism on the network side;

[1104] does not provide a DTX configuration;

[1105] does not support synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1106] does not provide configuration information of the SSB cycle extension;

[1107] or

[1108] the cell does not perform downlink coverage enhancement comprises at least one of:

[1109] does not perform a beam hopping mechanism;

[1110] does not perform a discontinuous reception, DRX, mechanism on the network side;

[1111] does not provide a DRX configuration;

[1112] does not perform a discontinuous transmission, DTX, mechanism on the network side;

[1113] does not provide a DTX configuration;

[1114] does not perform synchronization signal and physical broadcast channel block, SSB, cycle extension;

[1115] does not provide configuration information of the SSB cycle extension.

[1116] In some embodiments, the DRX configuration comprises at least one of:

[1117] a DRX configuration corresponding to a beam;

[1118] a DRX configuration corresponding to a cell;

[1119] a DRX configuration corresponding to a geographical area.

[1120] In some embodiments, the DTX configuration comprises at least one of:

[1121] a DTX configuration corresponding to a beam;

[1122] a DTX configuration corresponding to a cell;

[1123] a DTX configuration corresponding to a geographical area.

[1124] In some embodiments, the second indication information exists in a case that the first indication information exists; and / or, the first indication information is used to indicate that the cell prohibits NTN connection in a case that the second indication information exists.

[1125] In some embodiments, the transceiver 1201 is further configured to:

[1126] transmit system information to the terminal device, the system information comprising the second indication information.

[1127] In some embodiments, the system information further comprises identities of a plurality of 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 comprises 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 a system information block 1 (SIB1).

[1132] The communication apparatus 1200 provided by the embodiments of the present application executes the method steps performed by the network device in the above-mentioned method embodiments, and has similar implementation principles and beneficial effects, which will not be repeated here.

[1133] The hardware related to program instructions can be used to complete all or part of the steps of each of the above-mentioned method embodiments. The foregoing program can be stored in a readable memory. When the program is executed, the steps of each of the above-mentioned method embodiments are executed; and the foregoing memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof.

[1134] FIG. 13 is a schematic diagram of an example structure of a communication device according to an embodiment of the present application. The communication device can be, for example, a terminal device or a network device. As shown in FIG. 13, the communication device 1300 can include a memory 1301, a processor 1302, and a transceiver 1303. The transceiver 1303 can include a transmitter and / or a receiver. The transmitter can also be referred to as a sender, a transmitter, a transmission port, a transmission interface, or the like. The receiver can also be referred to as a receiver, a reception port, a reception interface, or the like. The memory 1301, the processor 1302, and the transceiver 1303 can be connected to each other through a bus 1304.

[1135] The memory 1301 is configured to store program instructions.

[1136] The processor 1302 is configured to execute the program instructions stored in the memory, so as to enable the electronic device to perform the above method.

[1137] The above-mentioned steps of each method embodiment can be implemented by program instruction related hardware. The above-mentioned program can be stored in a readable memory. When the program is executed, the steps of each method embodiment are performed; and the above-mentioned memory (storage medium) includes a read-only memory (ROM), a RAM, a flash memory, a hard disk, a solid state disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof.

[1138] The embodiment of the present application provides a communication device, including a memory and a processor; the memory stores computer execution instructions; and the processor executes the computer execution instructions stored in the memory to implement the method in the above method embodiments.

[1139] Optionally, the embodiment of the present application can also provide a storage medium. The above-mentioned storage medium stores instructions, and when the instructions run on the communication device, the communication device performs any of the above methods. Optionally, the above-mentioned storage medium is an electronic storage medium. Optionally, the above-mentioned storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the above-mentioned storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[1140] The embodiment of the present application also provides a computer program product, including a program and / or instructions, which are executed by the communication device to enable the communication device to implement the method shown in the above method embodiments.

[1141] The embodiment of the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, can implement the method shown in the method embodiment.

[1142] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction apparatus, which implements the functions specified in one or more flows of the flow chart and / or one or more blocks of the block diagram.

[1143] Those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

[1144] The exemplary embodiments will be described in detail herein below, with examples shown in the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

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 starting 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 starting 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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