Communication method and device

Abstract

This application relates to a communication method and device. The method includes: determining an access identity of a terminal device based on an access class of the terminal device, where the access class of the terminal device is one of Access Class 0 to Access Class 9, and Access Class 0 to Access Class 9 correspond to one or more of the following access identities: Access Identity 3 to Access Identity 10, or H access identities with access identity numbers equal to or greater than 16, where H is a positive integer; determining, based on the access identity of the terminal device, that the terminal device applies a first access control parameter set; and determining, based on the first access control parameter set, whether the terminal device is authorized to access a first cell. The access class assigned to the terminal device corresponds to the new access identity. Accordingly, different access classes (or different access identities) are applicable to different access control parameters, and differentiated control is implemented in different types of terminal devices.

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the field of communication technologies, and in particular to communication methods and devices. [Background technology]

[0002] In the current NR standard, the network side controls the access of user equipment (UE) by using unified access control (UAC) technology. Concepts related to UAC include access class, access identity, and access category.

[0003] Each UE is assigned a corresponding access class. Typically, the access class is written into a subscriber identity module (SIM) card. In this case, the access class of the UE can be determined once the UE has a SIM card installed. There is a correspondence between the access class and the access identity, which can be specified by using a standard. A cell can broadcast access control parameters by using system information block 1 (SIB1). The access control parameters correspond to access categories, which can be determined based on services. Furthermore, each set of access control parameters has an applicable access identity. Therefore, the UE can determine applicable access control parameters based on the UE's access identity and the services performed by the UE to determine whether the UE is allowed to access the cell based on the access control parameters.

[0004] Currently, for a general user, the assigned access class is one of access class 0 to access class 9. In most cases, for a general user, the corresponding access identity is access identity 0. In this case, when access control is performed for a general UE, the same set of access control parameters may be used to perform the control. In this way, different UEs may not be distinguished, or access control may not be performed separately for different UEs. Summary of the Invention

[0005] The embodiments of the present application provide a communication method and device to perform separate access control on different terminal devices.

[0006] According to a first aspect, a first communication method is provided, which may be performed by a terminal device or a chip system. The method includes: determining, based on an access identity of the terminal device, that the terminal device applies a first access control parameter set, where the access identity of the terminal device is determined based on an access class of the terminal device, where the access class of the terminal device is one of Access Class 0 to Access Class 9, where Access Class 0 to Access Class 9 correspond to one or more of the following access identities: Access Identity 3 to Access Identity 10, or H access identities whose access identity numbers are 16 or greater, where H is a positive integer; and determining, based on the first access control parameter set, whether the terminal device is authorized to access a first cell, where the first cell is a cell from which the terminal device receives the first access control parameter set.

[0007] In this embodiment of the present application, the access class assigned to the terminal device is one of access class 0 to access class 9. However, these access classes correspond to new access identities. Correspondingly, different access classes (or different access identities) are applicable to different access control parameters. Therefore, access control is different When executed on a terminal device, different access control parameters are used for separate access control. Those It can be applied to terminal devices, and differentiated control with finer granularity can be implemented. For example, terminal devices required by the network or terminal devices that have a greater need to access the network can have priority access to the network, thereby satisfying the requirements of the terminal devices and the network.

[0008] With reference to the first aspect, in a first optional implementation of the first aspect, NoA Determining that the terminal device applies the first access control parameter set based on the access identity includes determining that the terminal device applies the first access control parameter set based on the access category and access identity of the terminal device.

[0009] The terminal device may determine that the terminal device applies the first access control parameter set based on the access identity and access category of the terminal device, or may determine that the terminal device applies the first access control parameter set based on the access identity without the access category.

[0010] With reference to the first aspect or the first arbitrary implementation of the first aspect, in a second arbitrary implementation of the first aspect, the first terminal device belongs to a first type, and the terminal devices of the same type have the same access class, and the terminal devices of different types satisfy the following conditions: different types of terminal devices support different bandwidths; different types of terminal devices support different numbers of antennas; Different types of terminal devices have different application scenarios; Different types of terminal devices support different maximum data transmission rates, or different types of terminal devices supporting different maximum transport block sizes; Satisfy one or more of the following.

[0011] In this embodiment of the present application, terminal devices may be classified into multiple different categories, and multiple classification factors may exist. For example, terminal devices may be classified based on the bandwidth supported by the terminal device, or based on the number of antennas supported by the terminal device, or based on the bandwidth and application scenario supported by the terminal device. In this embodiment of the present application, all terminal devices participating in the category classification may be, for example, RedCap terminal devices, or may include other terminal devices, for example, legacy terminal devices.

[0012] With reference to the first aspect, any first implementation of the first aspect, or any second implementation of the first aspect, in a third optional implementation of the first aspect, the method further includes receiving a first message, the first message including first indication information and at least one auxiliary parameter set, the first indication information being used to indicate that the auxiliary parameter set is set for one or more access classes or to indicate that the auxiliary parameter set is set for one or more access identities, the at least one auxiliary parameter set including all auxiliary parameter sets indicated by the first indication information; and determining, based on the first indication information, that the terminal device corresponds to the first auxiliary parameter set among the at least one auxiliary parameter set.

[0013] In this embodiment of the present application, in order to better perform separate access control for different types of terminal devices, auxiliary parameter sets may be further configured for different types of terminal devices, so as to further perform separate access control for different types of terminal devices by using the auxiliary parameter sets. For example, in this embodiment of the present application, auxiliary parameter sets are separately configured for one or more access classes, or auxiliary parameter sets are separately configured for one or more access identities. The network device needs to notify the terminal device of the access class for which the auxiliary parameter set is configured by the network device, or the access identity for which the auxiliary parameter set is configured by the network device. The network device may send first indication information and indicate the access identity for which the auxiliary parameter set is configured, or the access class for which the auxiliary parameter set is configured, by using the first indication information, so that the terminal device can receive the first indication. information Based on the SIB1, it can be determined whether an auxiliary parameter set is configured for the terminal device. In this implementation, the network device may send the first indication information and the at least one auxiliary parameter set in one message. The message may be, for example, SIB1, or another message. Therefore, the terminal device can obtain the auxiliary parameter set and the first indication information by using one message, and there is no need to exchange multiple messages between the network device and the terminal device, which simplifies the implementation process.

[0014] With reference to the first aspect, any first implementation of the first aspect, or any second implementation of the first aspect, in any fourth implementation of the first aspect, the method further includes receiving first indication information, where the first indication information is used to indicate that an auxiliary parameter set is set for one or more access classes or that an auxiliary parameter set is set for one or more access identities, and determining, based on the first indication information, that the terminal device corresponds to the first auxiliary parameter set.

[0015] With reference to any third implementation of the first aspect or any fourth implementation of the first aspect, in any fifth implementation of the first aspect, the first indication information is used to indicate that an auxiliary parameter set is set for each of one or more access classes, the first indication information is used to indicate that an auxiliary parameter set is set for each of one or more access identities, the first indication information is used to indicate that one auxiliary parameter set is set for one or more access classes, or the first indication information is used to indicate that one auxiliary parameter set is set for one or more access identities.

[0016] In this embodiment of the present application, one auxiliary parameter set may be configured for one access identity or access class, thereby providing finer control granularity because different auxiliary parameter sets may be configured for different access identities or access classes to implement differentiated control in terminals according to different access identities or access classes. Alternatively, one auxiliary parameter set may be configured for multiple access identities or access classes. In this way, the configuration process can be simplified and the signaling overhead caused by transmitting auxiliary parameter sets can also be reduced.

[0017] With reference to any third implementation of the first aspect, any fourth implementation of the first aspect, or any fifth implementation of the first aspect, in any sixth implementation of the first aspect, determining whether the terminal device is authorized to access the first cell based on the first access control parameter set includes determining whether the terminal device is authorized to access the first cell based on the first access control parameter set and the first auxiliary parameter set.

[0018] When the terminal device applies the first auxiliary parameter set, the terminal device may determine whether the terminal device is authorized to access the first cell based on the first access control parameter set and the first auxiliary parameter set. In this way, differentiated control is implemented for different types of terminal devices by using auxiliary parameter sets.

[0019] With reference to any third implementation of the first aspect, any fourth implementation of the first aspect, any fifth implementation of the first aspect, or any sixth implementation of the first aspect, in any seventh implementation of the first aspect, the first auxiliary parameter set includes one or more of the following parameters: a probability factor used to adjust a restriction factor included in the first access control parameter set, a time factor used to adjust an access restriction time included in the first access control parameter set, dedicated random access resource information, and a first threshold value which is a threshold value of a first parameter used to indicate the signal quality of a terminal device.

[0020] An auxiliary parameter set may include one or more of the above parameters, or may further include other parameters.

[0021] With reference to any seventh implementation of the first aspect, in any eighth implementation of the first aspect, the method further includes using the first auxiliary parameter set when it is determined that the value of the measured first parameter is less than a first threshold value.

[0022] For example, the first parameter is RSRP, RSRQ, or SINR. If the value of the first parameter measured by the terminal device is smaller than a first threshold, the terminal device may use the first auxiliary parameter set. If the value of the first parameter measured by the terminal device is equal to or greater than the first threshold, the terminal device may not use the first auxiliary parameter set. In this manner, the auxiliary parameter set may be used by users with poor signal quality. For example, the access of such users may be restricted by using the auxiliary parameter set (e.g., the probability factor may be set to a relatively small value, the signal quality of the set random access resources may be relatively poor, or the number of random access resources may be relatively small), thereby allowing more users with good signal quality to access the cell. In this manner, access control may be performed separately for different types of terminal devices, and access control may be performed separately for terminal devices with different signal qualities.

[0023] In any ninth implementation of the first aspect, with reference to any fourth implementation of the first aspect, any fifth implementation of the first aspect, any sixth implementation of the first aspect, any seventh implementation of the first aspect, or any eighth implementation of the first aspect, the method comprises: The method further includes receiving at least one auxiliary parameter set, wherein the at least one auxiliary parameter set includes all auxiliary parameter sets indicated by the first instruction information, and the at least one auxiliary parameter set includes the first auxiliary parameter set.

[0024] Alternatively, the network device may send the first indication information and the at least one auxiliary parameter set in different messages, so as to reduce the amount of information in one message and improve the success rate of message transmission.

[0025] With reference to the first aspect or any one of the first optional implementation of the first aspect to the ninth optional implementation of the first aspect, in the first tenth optional implementation, the first access control parameter set includes second indication information, and the second indication information is used to indicate an access identity to which the first access control parameter set is applicable.

[0026] For example, the access control parameter set is not applicable to access identity 0 by default, but includes second indication information. One or more access identities to which the access control parameter set is applicable may be indicated by using the second indication information. The terminal device can determine whether to apply the access control parameter set based on the access identities of the terminal device and the second indication information. The second indication information is improved, and the access identities to which the access control parameter set is applicable are expanded, so that the access control parameter set can be more appropriately applied.

[0027] With reference to the first aspect or any one of the first optional implementation of the first aspect to the tenth optional implementation of the first aspect, in an eleventh optional implementation of the first aspect, the first access control parameter set belongs to a first set, the first set further includes a second access control parameter set, the first set further includes third instruction information corresponding to the first access control parameter set and fourth instruction information corresponding to the second access control parameter set, the third instruction information is used to indicate an access identity to which the first access control parameter set is applicable, and the fourth instruction information is used to indicate an access identity to which the second access control parameter set is applicable.

[0028] This method is equivalent to extending the content of an existing access control parameter set. One access control parameter set (or one set) corresponds to one access category, but access control parameter sets applicable to different access identities may also be provided for one access category, which further facilitates implementing sophisticated access control.

[0029] With reference to the first aspect, or any one of the first optional implementation of the first aspect to the eleventh optional implementation of the first aspect, in a twelfth optional implementation of the first aspect, the access class of the terminal device is a first category access class, and the first category access class is set for the RedCap terminal device.

[0030] The terminal devices described in this embodiment of the present application may be, for example, RedCap terminal devices, or may include other types of terminal devices, for example, legacy terminal devices.

[0031] According to a second aspect, a second communication method is provided. The method may be performed by a network device or a chip system. For example, the network device is an access network device such as a base station. The method includes: determining at least one access control parameter set, the at least one access control parameter set being used to determine whether a terminal device is authorized to access a first cell, an access identity of the terminal device being determined based on an access class of the terminal device, the access class of the terminal device being one of access class 0 to access class 9, where access class 0 to access class 9 corresponds to one or more of the following access identities: access identity 3 to access identity 10, or H access identities whose access identity numbers are 16 or greater, where H is a positive integer; and transmitting the at least one access control parameter set.

[0032] With reference to the second aspect, in a first optional implementation of the second aspect, different access classes correspond to different types of terminal devices, and the access classes of terminal devices of the same type are the same. The different types of terminal devices satisfy one or more of the following: different types of terminal devices support different bandwidths; different types of terminal devices support different numbers of antennas; different types of terminal devices have different application scenarios; different types of terminal devices support different maximum data transmission rates; or different types of terminal devices support different maximum transport block sizes.

[0033] With reference to the second aspect or the first optional implementation of the second aspect, in the second optional implementation of the second aspect, the method further includes transmitting a first message, the first message including first indication information and at least one auxiliary parameter set, the first indication information being used to indicate that the auxiliary parameter set is set for one or more access classes or that the auxiliary parameter set is set for one or more access identities, and the at least one auxiliary parameter set including all auxiliary parameter sets indicated by the first indication information.

[0034] With reference to the second aspect or any first implementation of the second aspect, in any third implementation of the second aspect, the method further includes transmitting first indication information, wherein the first indication information is used to indicate that an auxiliary parameter set is set for one or more access classes or that an auxiliary parameter set is set for one or more access identities.

[0035] With reference to any second implementation of the second aspect or any third implementation of the second aspect, in any fourth implementation of the second aspect, the first indication information is used to indicate that an auxiliary parameter set is set for each of one or more access classes, the first indication information is used to indicate that an auxiliary parameter set is set for each of one or more access identities, the first indication information is used to indicate that one auxiliary parameter set is set for one or more access classes, or the first indication information is used to indicate that one auxiliary parameter set is set for one or more access identities.

[0036] With reference to any second implementation of the second aspect, any third implementation of the second aspect, or any fourth implementation of the second aspect, in any fifth implementation of the second aspect, one auxiliary parameter set among the at least one auxiliary parameter set includes the following parameters: At least one set of access control parameters applied by the terminal device The access control parameter set includes one or more of: a probability factor used to adjust a restriction factor included in the first access control parameter set; a time factor used to adjust an access restriction time included in the first access control parameter set; dedicated random access resource information; or a first threshold value which is a threshold value of a first parameter used to indicate the signal quality of the terminal device.

[0037] With reference to any third implementation of the second aspect, any fourth implementation of the second aspect, or any fifth implementation of the second aspect, in any sixth implementation of the second aspect, the method is to transmit at least one auxiliary parameter set, wherein the at least one auxiliary parameter set includes all auxiliary parameter sets indicated by the first indication information, and the at least one auxiliary parameter set is , the terminal device corresponds to one The method further includes including an auxiliary parameter set.

[0038] With reference to the second aspect or any one of the first optional implementation of the second aspect to the sixth optional implementation of the second aspect, in a seventh optional implementation of the second aspect, a first access control parameter set among the at least one access control parameter set includes second indication information, and the second indication information is used to indicate an access identity to which the first access control parameter set is applicable.

[0039] With reference to the second aspect or any one of the first optional implementation of the second aspect to the sixth optional implementation of the second aspect, in an eighth optional implementation of the second aspect, at least one access control parameter set includes a first access control parameter and a second access control parameter, the first access control parameter set and the second access control parameter belong to a first set, the first set further includes third instruction information corresponding to the first access control parameter set and fourth instruction information corresponding to the second access control parameter set, the third instruction information is used to indicate an access identity to which the first access control parameter set is applicable, and the fourth instruction information is used to indicate an access identity to which the second access control parameter set is applicable.

[0040] With reference to the second aspect, or any one of the first to eighth implementations of the second aspect, in a ninth implementation of the second aspect, the access class of the terminal device is a first category access class, and the first category access class is set for the RedCap terminal device.

[0041] For technical effects provided by the second aspect or any implementation of the second aspect, please refer to the description of the technical effects provided by the first aspect or the corresponding implementation.

[0042] According to a third aspect, a third communication method is provided. The method may be performed by a terminal device or may be performed by a chip system. The method includes receiving at least one access control parameter set and an auxiliary parameter set, determining, based on an access identity of the terminal device, that the terminal device corresponds to a first access control parameter set among the at least one access control parameter set, and determining, based on the first access control parameter set and the auxiliary parameter set, whether the terminal device is authorized to access a first cell.

[0043] In this embodiment of the present application, the auxiliary parameter set may be set for some terminal devices. For example, the auxiliary parameter set is set for a RedCap terminal device, so that the RedCap terminal device can determine whether the RedCap terminal device is allowed to access a cell by using the auxiliary parameter set. In this way, access control is performed separately for the RedCap terminal device and the legacy terminal device, so that the control granularity is finer.

[0044] With reference to the third aspect, in a first optional implementation of the third aspect, NoA Determining that the terminal device applies the first access control parameter set based on the access identity includes determining that the terminal device applies the first access control parameter set based on the access category and access identity of the terminal device.

[0045] With reference to the third aspect or the first optional implementation of the third aspect, in a second optional implementation of the third aspect, the auxiliary parameter set includes one or more of the following parameters: a probability factor used to adjust a restriction factor included in the first access control parameter set, a time factor used to adjust an access restriction time included in the first access control parameter set, dedicated random access resource information, or a first threshold value which is a threshold value of a first parameter used to indicate the signal quality of the terminal device.

[0046] With reference to the second optional implementation of the third aspect, in the third optional implementation of the third aspect, the method further includes using the auxiliary parameter set when it is determined that the value of the measured first parameter is less than the first threshold value.

[0047] With reference to the second optional implementation of the third aspect or the third optional implementation of the third aspect, in a fourth optional implementation of the third aspect, determining whether a terminal device is allowed to access the first cell based on the first access control parameter set and the auxiliary parameter set includes: adjusting a restriction factor by using a probability factor; generating a random number; determining that the terminal device is allowed to access the first cell if the random number is smaller than the adjusted restriction factor, or determining that the terminal device is prohibited from accessing the first cell if the random number is equal to or greater than the adjusted restriction factor; and if the terminal device is prohibited from accessing the first cell, starting a timer, wherein the counting period of the timer is a duration obtained after the access restriction time is adjusted based on the time factor, and the terminal device is prohibited from accessing the first cell before the timer expires.

[0048] The parameters included in the auxiliary parameter set may be used to adjust the corresponding parameters included in the access control parameter set to implement access control for different types of UEs.

[0049] With reference to the third aspect or any one of the first to fourth implementations of the third aspect, in a fifth implementation of the third aspect, the access class of the terminal device is one of access class 0 to access class 9.

[0050] In this embodiment of the present application, a new access class does not need to be set for the terminal device, provided that the terminal device applies the original access class. This makes the solution in this embodiment of the present application more compatible with the prior art. Alternatively, a new access class may be set for the terminal device, for example, one of access class 0 to access class 9.

[0051] With reference to the third aspect or any one of the first optional implementation of the third aspect to the fifth optional implementation of the third aspect, in a sixth optional implementation of the third aspect, the access identity of the terminal device is one of access identity 3 to access identity 10, or one of H access identities whose access identity number is 16 or greater, where H is a positive integer.

[0052] With reference to the third aspect or any one of the first to sixth implementations of the third aspect, in a seventh implementation of the third aspect, the method further includes: determining, based on capability information of the terminal device, that the terminal device applies an auxiliary parameter set; determining, based on an access class of the terminal device, that the terminal device applies an auxiliary parameter set, wherein the access class of the terminal device is a first category of access class, and among the first category of access classes, different access classes correspond to the same or different auxiliary parameter sets among the auxiliary parameter sets; or determining, based on an access identity of the terminal device, that the terminal device applies an auxiliary parameter set, wherein the access identity of the terminal device is a first category of access identity, and among the first category of access identities, different access identities correspond to the same or different auxiliary parameter sets among the auxiliary parameter sets, and the first category of access identities includes one or more of the following: access identity 3 to access identity 10, or H access identities whose access identity numbers are 16 or greater, where H is a positive integer.

[0053] The terminal device may determine whether to apply an auxiliary parameter set to the terminal device in different ways. For example, the terminal device may determine that an auxiliary parameter set is applicable to the terminal device based on the capabilities of the terminal device. For example, it may be determined that an auxiliary parameter set is applicable to a terminal device with a first capability, but is not applicable to terminal devices with other capabilities. In this case, a terminal device with the first capability can use the auxiliary parameter set, and a terminal device with the other capabilities does not use the auxiliary parameter set. The first capability may include, for example, antenna capability or bandwidth capability, and may further include other capabilities. Alternatively, in this embodiment of the present application, a new access class may be assigned to the terminal device. If the new access class is configured for the terminal device, the terminal device applies the auxiliary parameter set. Otherwise, the terminal device does not apply the auxiliary parameter set. Alternatively, in this embodiment of the present application, a new access identity may be assigned to the terminal device. If the new access identity is configured for the terminal device, the terminal device applies the auxiliary parameter set. Otherwise, the terminal device does not apply the auxiliary parameter set. It can be seen that in this embodiment of the present application, the terminal device may determine whether the terminal device applies an auxiliary parameter set in multiple ways, which is relatively flexible.

[0054] For technical effects provided by some implementations of the third aspect, please refer to the description of the technical effects provided by corresponding implementations of the first aspect.

[0055] According to a fourth aspect, a fourth communication method is provided. The method may be performed by a network device or may be performed by a chip system. For example, the network device is an access network device such as a base station. The method includes determining at least one access control parameter set and an auxiliary parameter set, where the at least one access control parameter set and the auxiliary parameter set are used to determine whether a terminal device is authorized to access a first cell; and transmitting the at least one access control parameter set and the auxiliary parameter set.

[0056] Referring to the fourth aspect, in a first optional implementation of the fourth aspect, the auxiliary parameter set includes the following parameters: At least one set of access control parameters applied by the terminal device The access control parameter set includes one or more of: a probability factor used to adjust a restriction factor included in the first access control parameter set; a time factor used to adjust an access restriction time included in the first access control parameter set; dedicated random access resource information; or a first threshold value which is a threshold value of a first parameter used to indicate the signal quality of the terminal device.

[0057] With reference to the first optional implementation of the fourth aspect, in a second optional implementation of the fourth aspect, the method further includes using an auxiliary parameter set when it is determined that the value of the measured first parameter is less than a first threshold value.

[0058] With reference to the fourth aspect, any implementation of the first aspect of the fourth aspect, or any implementation of the second aspect of the fourth aspect, in any implementation of the third aspect of the fourth aspect, the access class of the terminal device is one of access class 0 to access class 9.

[0059] With reference to any one of the fourth aspect, the first optional implementation of the fourth aspect, or the third optional implementation of the fourth aspect, in the fourth optional implementation of the fourth aspect, the access identity of the terminal device is one of access identity 3 to access identity 10, or one of H access identities whose access identity number is 16 or greater, where H is a positive integer.

[0060] With reference to the fourth aspect, any first implementation of the fourth aspect, any fourth implementation of the fourth aspect, or any third implementation of the fourth aspect, in any fifth implementation of the fourth aspect, the auxiliary parameter set corresponds to a first capability of the terminal device, or the auxiliary parameter set corresponds to a first category of access classes. In the first category of access classes, different access classes correspond to the same or different auxiliary parameter sets among the auxiliary parameter sets, or the auxiliary parameter set corresponds to the first category of access identities. In the first category of access identities, different access identities correspond to the same or different auxiliary parameter sets among the auxiliary parameter sets, and the first category of access identities includes one or more of the following: Access Identity 3 to Access Identity 10, or H access identities whose access identity number is 16 or greater when H is a positive integer.

[0061] For technical effects provided by some implementations of the fourth aspect, please refer to the description of the technical effects provided by corresponding implementations of the third aspect.

[0062] According to a fifth aspect, there is provided a communication device. The communication device may include a module configured to perform the method according to the first aspect or any one of the implementations of the first aspect, for example, a processing unit. Optionally, the communication device may further include a transceiver unit. Optionally, the communication device may further include a storage unit.

[0063] According to a sixth aspect, there is provided a communication device. The communication device may include modules configured to perform the method according to the second aspect or any one of the implementations of the second aspect, and may include, for example, a transceiver unit and a processing unit. Optionally, the communication device may further include a storage unit.

[0064] According to a seventh aspect, there is provided a communication device. The communication device may include modules configured to perform the method according to any one of the third aspect or any implementations of the third aspect, and may include, for example, a transceiver unit and a processing unit. Optionally, the communication device may further include a storage unit.

[0065] According to an eighth aspect, there is provided a communication device. The communication device may include modules configured to perform the method according to any one of the fourth aspect or any implementations of the fourth aspect, and may include, for example, a transceiver unit and a processing unit. Optionally, the communication device may further include a storage unit.

[0066] According to a ninth aspect, a chip system is provided. The chip system includes one or more processors and a communication interface. The processor is coupled to the communication interface and configured to perform the method provided in the first aspect or any one of the implementations of the first aspect. Optionally, the chip system may further include a memory. For example, the processor may read and execute a software program stored in the memory to perform the method provided in the first aspect or any one of the implementations of the first aspect.

[0067] According to a tenth aspect, a chip system is provided. The chip system includes one or more processors and a communication interface. The processor is coupled to the communication interface and configured to perform the method provided in the second aspect or any one of the implementations of the second aspect. Optionally, the chip system may further include a memory. For example, the processor may read and execute a software program stored in the memory to perform the method provided in the second aspect or any one of the implementations of the second aspect.

[0068] According to an eleventh aspect, a chip system is provided. The chip system includes one or more processors and a communication interface. The processor is coupled to the communication interface and configured to perform the method provided in any one of the third aspect or any implementations of the third aspect. Optionally, the chip system may further include a memory. For example, the processor may read and execute a software program stored in the memory to perform the method provided in any one of the third aspect or any implementations of the third aspect.

[0069] According to a twelfth aspect, a chip system is provided. The chip system includes one or more processors and a communication interface. The processor is coupled to the communication interface and configured to perform the method provided in the fourth aspect or any one of the implementations of the fourth aspect. Optionally, the chip system may further include a memory. For example, the processor may read and execute a software program stored in the memory to perform the method provided in the fourth aspect or any one of the implementations of the fourth aspect.

[0070] According to a thirteenth aspect, there is provided a first communication system, which includes the communication device according to the fifth aspect or the chip system according to the ninth aspect, and includes the communication device according to the sixth aspect or the chip system according to the tenth aspect.

[0071] According to a fourteenth aspect, there is provided a second communication system. 2 The communication system includes the communication device according to the seventh aspect or the chip system according to the eleventh aspect, and includes the communication device according to the eighth aspect or the chip system according to the twelfth aspect.

[0072] According to a fifteenth aspect, there is provided a computer-readable storage medium configured to store a computer program, which, when executed on a computer, enables the computer to perform the method provided in any one of the above aspects.

[0073] According to a sixteenth aspect, there is provided a computer program product comprising instructions. The computer program product is configured to store a computer program. When the computer program is run on a computer, the computer is capable of performing a method according to any one of the above aspects.

[0074] In an embodiment of the present application, an access class assigned to a terminal device corresponds to at least two access identities, and correspondingly, different access classes (or different access identities) are applicable to different access control parameters, and differentiated control is implemented for different types of terminal devices. [Brief explanation of the drawings]

[0075] [Figure 1] FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application; [Figure 2] 2 is a flowchart of a first communication method according to an embodiment of the present application; [Figure 3] 4 is a flowchart of a second communication method according to an embodiment of the present application. [Figure 4] 1 is a schematic block diagram of a communication device according to an embodiment of the present application; [Figure 5]1 is a schematic block diagram of another communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0076] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more apparent, the following further describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0077] The following describes some terms in the embodiments of the present application to facilitate understanding by those skilled in the art.

[0078] In the embodiments of the present application, the terminal device is a device having a wireless transceiver function, and may be a fixed device, a mobile device, a handheld device, a wearable device, or an in-vehicle device, or a wireless device (e.g., a communication module or a chip system) configured in the above devices. The terminal device is configured to connect people, things, machines, etc., for example, in the following scenarios: cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication. communicationThe terminal device may be widely used in various scenarios, including, but not limited to, machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, unmanned aerial vehicles, robots, etc. The terminal device may sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication device, user equipment, etc. For ease of explanation, an example in which the terminal device is a UE is used in the description of the embodiments of this application.

[0079] For example, the type of UE in the embodiment of the present application is a reduced capability UE (RedCap UE). Compared with existing general NR UEs, RedCap UEs typically support a lower bandwidth, for example, only 20 MHz, and fewer transceiver antennas, for example, only 1T1R or 1T2R. According to existing research on the subject, RedCap UEs include three types of low capability UEs: wearable products, video surveillance devices, and industrial sensor devices.

[0080] The network device in the embodiment of the present application includes, for example, an access network device and / or a core network device. The access network device is a device equipped with a radio transceiver function and configured to communicate with a terminal device. The access network device includes, but is not limited to, a base station (BTS, Node B, eNodeB / eNB, or gNodeB / gNB), a transmission reception point (TRP), a base station evolved from 3GPP and thereafter, an access node, a wireless relay node, a wireless backhaul node, etc. of the above communication systems. The base station may be a micro base station, a micro base station, a picocell base station, a small cell, a relay station, etc. Multiple base stations may support the above network using the same access technology or different access technologies. A base station may include one or more co-located or non-co-located transmission and reception points. The network device may alternatively be a radio controller, a centralized unit (CU), and a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device may alternatively be a server, a wearable device, an in-vehicle device, etc. For example, a network device in V2X technology may be a road side unit (RSU). The following will be described by using an example in which the access network device is a base station. Multiple network devices in a communication system may be base stations of the same type, or may be base stations of different types. A base station may communicate with a terminal device, or may communicate with the terminal device via a relay station. A terminal device may communicate with multiple base stations of different access technologies. The core network device is configured to implement functions such as mobility management, data processing, session management, and policy and charging.The names of devices performing core network functions in systems with different access technologies may be different, including access and mobility management function (AMF), session management function (SMF), user plane function (UPF), etc.

[0081] In the embodiments of the present application, the apparatus configured to implement the functions of the network device may be a network device, or may be an apparatus that can assist the network device to implement the functions, such as a chip system. The apparatus may be installed in a network. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application will be described by using an example in which the apparatus configured to implement the functions of the network device is a network device.

[0082] In the embodiments of the present application, unless otherwise specified, the number of items refers to "single item or multiple items," i.e., "one or more." "At least one" means one or more, and "multiple..." means two or more. The term "and / or" indicates an association relationship between related entities, and indicates that three relationships may exist. For example, A and / or B can indicate the following cases: only A is present, both A and B are present, and only B is present, where A and B may be singular or plural. The character " / " generally indicates a "logical or" relationship between related entities. For example, A / B indicates either A or B. "At least one of the following items" or similar expressions refers to any combination of those items, including any combination of a single item or multiple items. For example, at least one item (element) of a, b, or c can represent a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c may be singular or plural.

[0083] Furthermore, unless otherwise specified, in the embodiments of the present application, ordinal numbers such as "first" and "second" are intended to distinguish between multiple items, but are not intended to limit the size, content, order, chronological order, priority, importance, etc., of the multiple items. For example, the first instruction information and the second instruction information may be the same instruction information, or may be different instruction information. Furthermore, such names do not indicate different amounts of information, content, priority, transmission order, importance, etc., of the two instruction information.

[0084] The above describes some terms in the embodiments of the present application. The following describes technical features in the embodiments of the present application.

[0085] In the current NR standard, the ability to prohibit a UE from camping on a network is implemented by including two bits in the master information block (MIB): cellBarred and intraFreqReselection. The cellBarred indicates whether the network allows the UE to camp on a cell, and intraFreqReselection indicates whether the network allows the UE to reselect an intra-frequency neighbor cell.

[0086] Currently, UE access control is implemented by using UAC technology. UAC-related concepts include access class, access identity, and access category.

[0087] Each UE is assigned a corresponding access class. Usually, the access class is written in the SIM card. In this case, the access class of the UE can be determined when the SIM card is installed in the UE. Currently, for a general user, the assigned access class is generally one of access class 0 to access class 9, and access class 11 to access class 15 are assigned to high-priority users.

[0088] Currently, the correspondence (or mapping relationship) between access classes and access identities is defined in the standard, with access classes 0 to 9 all mapped to access identity 0, and access classes 11 to 15 mapped to access identity 11 to access identity 15, respectively. That is, in most cases, a general UE is mapped to access identity 0. It will be appreciated that access classes or access identities may be used to distinguish between types of UE. Table 1 shows currently defined access identities and corresponding UE settings. [Table 1]

[0089] The standard also defines access categories, which are used to distinguish between types of services that are accessed. Therefore, the access category is related to the services of the UE. For example, if the UE initiates access by making an emergency call, the access category is access category 2. Table 2 shows the currently defined access categories and the corresponding services. The access category numbers are in the first column of Table 2. For the services of the UE, please refer to the third column of Table 2. It can be seen that different services can correspond to different access category numbers, i.e., they correspond to different access categories. [Table 2] TIFF0007784418000003.tif188170

[0090] A cell can broadcast access control parameters through SIB1. The access control parameters are organized based on access categories and declare whether the corresponding access classes are applicable. The UE determines whether the UE is allowed to access the cell based on the access control parameters. SIB1 is periodically broadcast, and a paging message notifies a change in a system message. If the paging message received by the UE indicates that the system message has changed, the UE needs to re-read SIB1. Otherwise, the UE does not need to read SIB1. The access control parameters correspond to the access categories. For example, the correspondence is defined in a protocol or pre-configured in the UE and the network device. In other words, both the UE and the network device can recognize the correspondence between the access control parameters and the access categories. The access category may be determined based on the service, and the UE can determine the access category corresponding to the UE based on the service initiated by the UE for access. Furthermore, each set of access control parameters has an applicable access identity. Therefore, the UE may determine the access control parameters applicable to the UE based on the UE's access identity and the UE's access category to determine whether the UE is allowed to access the cell based on the access control parameters.

[0091] For example, when the access class of the UE is 2, it can be seen from the above description that the access identity of the UE is access identity 0. Furthermore, for example, when the UE initiates random access due to an emergency, it can be seen from Table 2 that the access category of the UE is access category 2. Access control parameters correspond to access categories, and the UE can determine access control parameters corresponding to access category 2. The access control parameters can indicate whether the access control parameters are applicable to the corresponding access identity, so the UE can determine whether the access control parameters are applicable to access identity 0. If the access control parameters are applicable to access identity 0, the UE uses the access control parameters to determine whether the UE is allowed to access the cell.

[0092] From the above description, it can be seen that currently, for a general user, the assigned access class is one of access class 0 to access class 9. In most cases, for a general user, the corresponding access identity is access identity 0. In this case, when access control is performed for a general UE, the same set of access control parameters may be used to perform the control. In this way, different UEs may not be distinguished, or access control may not be performed separately for different UEs.

[0093] In view of this, the technical solution of the embodiment of the present application is provided. In the embodiment of the present application, the access class assigned to the terminal device is one of access class 0 to access class 9. However, the access identities corresponding to these access classes may be one or more of access identities 3 to 10, or H access identities. In other words, access class 0 to access class 9 may correspond to new access identities. Correspondingly, different access classes (or different access identities) are applicable to different access control parameters. Therefore, access control is different When executed on a terminal device, different access control parameters are used for separate access control. Those It can be applied to terminal devices, and differentiated control with finer granularity can be implemented. For example, terminal devices required by the network or terminal devices that have a greater need to access the network can have priority access to the network, thereby satisfying the requirements of the terminal devices and the network.

[0094] The technical solutions provided in the embodiments of the present application may be applied to a 4G system, for example, an LTE system, or may be applied to a 5G system, for example, an NR system, or may further be applied to a next-generation mobile communication system or other similar communication systems, which is not particularly limited.

[0095] 1 illustrates an application scenario according to an embodiment of the present application, which includes an access network device, a core network device, and a UE. The UE may use access control parameters to determine whether the UE is allowed to access a cell provided by the access network device.

[0096] The access network device operates, for example, in an evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) system, an NR system, a next-generation communication system, or other communication systems. The access network device is, for example, a base station. The access network device corresponds to different devices in different systems. For example, the access network device may correspond to an eNB in ​​a 4G system and to an access network device of 5G, for example, a gNB in ​​a 5G system. Indeed, the technical solution provided in this embodiment of the present application may also be applied to future mobile communication systems. Therefore, the access network device in FIG. 1 may also correspond to a network device in a future mobile communication system. In FIG. 1, an example in which the access network device is a base station is used. In fact, referring to the above description, the access network device may alternatively be a device such as an RSU. Furthermore, an example in which the UE in FIG. 1 is a mobile phone is used. In fact, it can be seen from the above description of the UE that the UE in this embodiment of the present application is not limited to a mobile phone.

[0097] With reference to the accompanying drawings, the following describes the method provided in this embodiment of the present application. In the accompanying drawings corresponding to the embodiments of the present application, all steps represented by dashed lines are optional steps.

[0098] The embodiment of the present application provides a first communication method. Figure 2 is a flowchart of the method. The following description uses an example in which the method is applied to the network architecture shown in Figure 1.

[0099] For ease of explanation, an example in which the method is performed by a network device and a UE is used below. This embodiment of the present application is applied to the network architecture shown in Figure 1. Therefore, the network device described below may be, for example, an access network device in the network architecture shown in Figure 1, and the UE described below may be a UE in the network architecture shown in Figure 1.

[0100] S21: The network device transmits at least one access control parameter set, and the UE correspondingly receives at least one access control parameter set from the network device. For example, when the network device transmits at least one access control parameter set in a first cell, the UE receives at least one access control parameter set in the first cell. The first cell is a cell from which the UE should initiate random access, or the UE expects to initiate random access in the first cell.

[0101] Before accessing the network device, the UE may receive at least one access control parameter set. For example, the network device may transmit the at least one access control parameter set in the first cell by using a system message. The system message may be, for example, SIB1 or another system message. That is, the network device transmits the at least one access control parameter set in one message. Indeed, the network device may also transmit the at least one access control parameter set in a different message. In this case, the UE receives the system message in the first cell to obtain the at least one access control parameter set. The access control parameter set corresponds to an access category. For example, each access control parameter set in the at least one access control parameter set corresponds to an access category. The UE may determine an access category corresponding to the UE based on a service initiated by the UE for access, thereby allowing the UE to determine an access control parameter set corresponding to the UE. Furthermore, the access control parameter set has an applicable access identity, and the UE also has its access identity. In short, the UE can determine an access control parameter set corresponding to the UE based on the access category of the UE, and then determine whether the UE applies the access control parameter set based on the access identity of the UE. If the UE applies the access control parameter set, the UE may determine whether the UE is authorized to access the network device or whether the UE is authorized to access the first cell based on the access control parameter set.

[0102] For example, the network device transmits at least one access control parameter set by using one message, and the format of the message is, for example, as follows:

number

[0103] Here, accessCategory indicates an access category number, and uac-barringInfoSetIndex indicates the index of the access control parameter set corresponding to the access category number indicated by accessCategory. The message may then include one or more access control parameter sets. For example, the format of the access control parameter set is as follows:

number

[0104] Here, UAC-BarringInfoSet corresponds to an index, and the index is written after UAC-BarringInfoSet. For example, the index is 1, 2, etc. That is, the message may include at least one access control parameter set, and each access control parameter set corresponds to (or includes) an index. Therefore, the UE may refer to Table 2 to determine the access category number of the UE based on the service of the UE, determine the index of the access control parameter set corresponding to the access category number based on the access category number, and then determine the access control parameter set corresponding to the UE from the at least one access control parameter set included in the message based on the index of the access control parameter set.

[0105] It can be seen that the access control parameter set can include several parameters: uac-BarringFactor, uac-BarringTime, and uac-BarringForAccessIdentity. RegulationThe barring factor may be referred to as a barring factor, and the value of the barring factor is a probability value, for example, 40% or 50%, or expressed as 0.4 or 0.5. For example, after determining the access control parameter set corresponding to the UE, the UE generates a random number (rand) before initiating access. If the random number is smaller than the value of the barring factor, the UE is allowed to access the cell. If the random number is equal to or greater than the value of the barring factor, the UE is prohibited from accessing the cell. The network can control the number of UEs accessed by setting the barring factor. For example, the network may set a small value of the barring factor, so that the probability that the random number generated by the UE is smaller than that value is low, and the UE cannot easily access the cell. Therefore, the number of UEs accessing the cell is relatively small, thereby reducing network load. The uac-BarringTime may be referred to as an access barring time, and the value of the uac-BarringTime is a duration. When the UE determines that the UE is prohibited from accessing the cell based on the barring factor, the UE may start a timer T390. The duration of the timer T390 may be obtained based on the value of the access barring time. During the duration, the UE is not allowed to access the cell (i.e., is prohibited from accessing the cell). After the duration, the UE may generate a random number again to re-determine whether the UE is allowed to access the cell based on the restrictive factors.

[0106] A UE to which the embodiment of the present application is applied is, for example, a RedCap UE. Both RedCap UE and legacy UE need to receive SIB1. A legacy UE is a UE with general capabilities, a UE with limited capabilities, or a UE other than a RedCap UE. In implementing SIB1, SIB1 corresponding to a RedCap UE is the same as SIB1 corresponding to a legacy UE. In this case, the access control parameter sets may not be changed, and at least one access control parameter set is applicable to both RedCap UEs and legacy UEs. Furthermore, the access control parameter set may further include a parameter, uac-BarringForAccessIdentity, which may indicate an access identity to which the access control parameter set is applicable. The UE can determine whether the access control parameter set is applicable based on the access identity of the UE. The uac-BarringForAccessIdentity included in the access control parameter set may indicate whether the access control parameter set is applicable to access identities 1, 2, 11, 12, 13, 14, and 15. The uac-BarringForAccessIdentity may be implemented in the form of a bitmap. For example, the uac-BarringForAccessIdentity includes seven bits, which correspond to access identities 1, 2, 11, 12, 13, 14, and 15, respectively. If one of the seven bits has a value of "1," it indicates that the access control parameter set is applicable to the access identity corresponding to that bit. If one of the seven bits has a value of "0," it indicates that the access control parameter set is not applicable to the access identity corresponding to that bit. It can be seen that the uac-BarringForAccessIdentity does not include a bit corresponding to access identity 0.Therefore, for a UE with access identity 0, if it is determined that uac-BarringForAccessIdentity does not include a bit corresponding to access identity 0, the UE may determine that the UE can apply an access control parameter set. From this method, it can be seen that at least one access control parameter set is applicable to all UEs with access identity 0.

[0107] However, in this embodiment of the present application, a first category of access classes is assigned to the UE, and the first category of access classes corresponds to the first category of access identities. The first category of access classes may, for example, include one or more of access class 0 to access class 9, or may include other access classes, for example, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25. The first category of access classes refers to access classes other than those corresponding to high-priority users, and the access classes corresponding to high-priority users may, for example, include 11 to 15. For example, access class 0 to access class 9 may be first-priority access classes, and access class 11 to access class 15 may be second-priority access classes, where the second priority is higher than the first priority. The first category of access identities may, for example, include one or more of the following access identities: access identity 3 to access identity 10, or H access identities with access identity numbers equal to or greater than 16, where H is a positive integer. For example, the H access identities include access identity 16, access identity 17, etc. The first category access classes, first category access identities, etc. are described below. If the access control parameter set is not changed, uac-BarringForAccessIdentity still indicates whether the access control parameter set is applicable to access identities 1, 2, 11, 12, 13, 14, and 15. uac-BarringForAccessIdentity may not indicate the first category access identities. In this case, for a UE in this embodiment of the present application, if it is determined that uac-BarringForAccessIdentity of an access control parameter set does not include a bit corresponding to the UE's access identity, the UE may determine that the UE can apply the access control parameter set.In that case, at least one access control parameter set is applicable to all UEs of the first category of access identities.

[0108] Alternatively, when SIB1 corresponding to a RedCap UE is the same as SIB1 corresponding to a legacy UE, in this embodiment of the present application, the access control parameter set may not be changed or may not be extended, and SIB1 may be changed or extended. For example, the same SIB1 may include two types of access control parameter sets, which are respectively referred to as a first type access control parameter set and a second type access control parameter set. The first type access control parameter set is applicable to legacy UEs and may include one or more access control parameter sets. In this case, the access control parameter sets included in the first type access control parameter set are the same as the above-mentioned access control parameter sets. Details will not be described again. Furthermore, in this embodiment of the present application, a first category access class is assigned to the UE. The first category access class corresponds to a first category access identity. The first category access class, the first category access identity, etc. will be described below. In this case, the second-type access control parameter set is applicable to a UE assigned with an access class of the first category, and at least one access control parameter set described in this embodiment of the present application belongs to the second-type access control parameter set. Any access control parameter set included in the second-type access control parameter set may include indication information. The indication information may be referred to, for example, as fifth indication information. The fifth indication information may indicate whether the access control parameter set is applicable to an access identity of the first category. For example, the fifth indication information may be implemented by using a bitmap. In this case, the bitmap may include N bits, where N is a positive integer, and the N bits correspond to the access identities of the first category, the number of N is equal to the number of access identities of the first category, and the N bits are in one-to-one correspondence with the access identities of the first category.For an access identity in the first category of access identities, if the value of the bit corresponding to the access identity among the N bits included in the access control parameter set of the second type access control parameter set is “1”, it indicates that the access control parameter set is applicable to the access identity, or if the value of the bit corresponding to the access identity among the N bits is “0”, it indicates that the access control parameter set is not applicable to the access identity.

[0109] Alternatively, even if SIB1 corresponding to a RedCap UE is the same as SIB1 of a legacy UE, in this embodiment of the present application, the access control parameter set may be changed or extended. For example, the number of bits included in uac-BarringForAccessIdentity is extended. Originally, uac-BarringForAccessIdentity includes 7 bits. In this embodiment of the present application, uac-BarringForAccessIdentity includes 7+N bits, where N is a positive integer, and N bits correspond to access identities of the first category. The number of access identities of the first category may be equal to N, and N bits are in one-to-one correspondence with the access identities of the first category, with one bit of the N bits indicating one access identity among the access identities of the first category. For any access identity in the first category of access identities, if the value of the bit among the N bits corresponding to that access identity is “1”, it indicates that the access control parameter set is applicable to that access identity, or if the value of the bit among the N bits corresponding to that access identity is “0”, it indicates that the access control parameter set is not applicable to that access identity.

[0110] Alternatively, in another implementation of SIB1, the RedCap UE and the legacy UE correspond to different SIB1. In other words, the network device separately sends different SIB1 to the RedCap UE and the legacy UE. In this case, the RedCap UE may not be able to identify the SIB1 corresponding to the legacy UE, and the legacy UE may not be able to identify the SIB1 corresponding to the RedCap UE. That is, the UE can only identify the SIB1 corresponding to the UE, and the UE only needs to process the SIB1 that can be identified by the UE. When the SIB1 corresponding to the RedCap UE is different from the SIB1 corresponding to the legacy UE, the access control parameter set may remain unchanged in this embodiment of the present application, or, optionally, the access control parameter set may be modified (or extended) in this case in this embodiment of the present application. There are several modification methods, which will be described below by using examples.

[0111] 1. First method for changing the access control parameter set

[0112] For example, the access control parameter set may include second indication information. One or more access identities to which the access control parameter set is applicable may be indicated by using the second indication information. The UE can determine whether to apply the access control parameter set based on the UE's access identities and the second indication information. For example, the second indication information may be represented as a uac-BarringForAccessIdentitybitmap or in another format. In this manner, it may be understood that the uac-BarringForAccessIdentity originally included in the access control parameter set is extended to obtain the second indication information. Alternatively, in this manner, the uac-BarringForAccessIdentity originally included in the access control parameter set is deleted, and the second indication information is added to the access control parameter set.

[0113] The second indication information may indicate whether the access control parameter set is applicable to the access identities of the first category. Optionally, the second indication information may further indicate whether the access control parameter set is applicable to other access identities. The other access identities are access identities other than the access identities of the first category, such as access identities 11 to 15 (i.e., access identities corresponding to high-priority users). For example, the second indication information may also be implemented in the form of a bitmap. The number of bits included in the bitmap may be equal to the number of access identities to be displayed. For example, if the access identities to be displayed of the first category include access identity 3 to access identity 10, the bitmap includes 8 bits. For example, if the value of one of the 8 bits is "1," it indicates that the access control parameter set is applicable to the access identity corresponding to that bit. If the value of one of the 8 bits is "0," it indicates that the access control parameter set is not applicable to the access identity corresponding to that bit. For example, if the bitmap included in an access control parameter set is “00100110”, it indicates that the access control parameter set is applicable to access identity 5, access identity 8, and access identity 9, but is not applicable to access identity 3, access identity 4, access identity 6, access identity 7, and access identity 10.

[0114] Alternatively, the second instruction information may be implemented in other ways. For example, the second instruction information may include access identity numbers, where access identities corresponding to the access identity numbers included in the second instruction information are applicable to the access control parameter set, and access identities corresponding to access identity numbers not included in the second instruction information are inapplicable to the access control parameter set. For example, the second instruction information for the access control parameter set includes access identity number 3 and access identity number 5, but does not include other access identity numbers. Access identity number 3 corresponds to access identity 3, and access identity number 5 corresponds to access identity 5. In this case, it indicates that the access control parameter set is applicable to access identity 3 and access identity 5, but is inapplicable to other access identities.

[0115] In the first method for changing the access control parameter set, in addition to the second indication information, the access control parameter set may further include two parameters: a restriction factor and an access restriction time. For the description of the two parameters, please refer to the description above. In the first method for changing the access control parameter set, these two parameters are not changed.

[0116] This modification method is easy to implement because only the uac-BarringForAccessIdentity included in the access control parameter set is modified, and the access control parameter set is only slightly modified.

[0117] 2. Second method for changing the access control parameter set

[0118] In this modification method, one access control parameter set may include multiple access control parameter subsets, and each access control parameter subset may have a corresponding access identity. It can be understood that this method actually increases the number of access control parameter sets. For example, an access control parameter set may include a first access control parameter subset and a second access control parameter subset, and may also include third indication information corresponding to the first access control parameter subset and fourth indication information corresponding to the second access control parameter subset. The third indication information indicates an access identity to which the first access control parameter subset is applicable, and the UE can determine whether to apply the first access control parameter subset based on the UE's access identity and the third indication information. The fourth indication information indicates an access identity to which the second access control parameter subset is applicable, and the UE can determine whether to apply the second access control parameter subset based on the UE's access identity and the fourth indication information.

[0119] Alternatively, in this modification method, the access control parameter set may be referred to as a set, and the access control parameter subset may be referred to as an access control parameter set. For example, the network device may transmit at least one set, and one of the at least one set may include one or more access control parameter sets. For example, the at least one set may include a first set, which includes a first access control parameter set and a second access control parameter set, and also includes third indication information corresponding to the first access control parameter set and fourth indication information corresponding to the second access control parameter set. The third indication information indicates an access identity to which the first access control parameter set is applicable, and the UE can determine whether to apply the first access control parameter set based on the UE's access identity and the third indication information. The fourth indication information indicates an access identity to which the second access control parameter set is applicable.

[0120] For example, the third indication information or the fourth indication information may be represented as uac-BarringForAccessIdentitybitmap or in another format.

[0121] The third indication information may indicate whether the first access control parameter set is applicable to M access identities. The M access identities belong to a first category of access identities. For example, M is a positive integer less than or equal to the number of access identities in the first category. For example, the third indication information may also be implemented in the form of a bitmap. The number of bits included in the bitmap may be equal to the number of access identities to be indicated. For example, if the indicated access identities in the first category include access identity 3 to access identity 10, the bitmap includes 8 bits. For example, if one of the 8 bits has a value of “1,” it indicates that the first access control parameter set is applicable to the access identity corresponding to that bit. If one of the 8 bits has a value of “0,” it indicates that the first access control parameter set is not applicable to the access identity corresponding to that bit.

[0122] Alternatively, the third instruction information may be implemented in other ways. For example, the third instruction information may include an access identity number, and an access identity corresponding to the access identity number included in the third instruction information is applicable to the first access control parameter set, and an access identity corresponding to an access identity number not included in the third instruction information is not applicable to the first access control parameter set. For an example of this, see the above example in which the second instruction information includes an access identity number.

[0123] The implementation of the fourth instruction information is similar to that of the third instruction information, and the details will not be described again.

[0124] For example, here's how to configure the first set:

number

[0125] It can be seen that the first set includes two sets of parameters, each set of parameters including uac-BarringFactor, uac-BarringTime, and uac-BarringForAccessIdentity, and each set of parameters corresponds to an access control parameter set.

[0126] For example, both the third indication information and the fourth indication information indicate applicability to access identity 3 to access identity 10. For example, if the third indication information included in the first access control parameter set is “11000000” and the fourth indication information included in the second access control parameter set is “00100000”, it indicates that the first access control parameter set is applicable to access identity 3 and access identity 4, but is not applicable to access identity 5, access identity 6, access identity 7, access identity 8, access identity 9, and access identity 10; and the second access control parameter set is applicable to access identity 5, but is not applicable to access identity 3, access identity 4, access identity 6, access identity 7, access identity 8, access identity 9, and access identity 10.

[0127] In this case, one set may include one or more access control parameter sets. In addition to the instruction information (e.g., the third instruction information or the fourth instruction information), one access control parameter set may further include two parameters: a restriction factor and an access restriction time. For an explanation of these two parameters, please refer to the description above. Different access control parameter sets may include two parameters, and the values ​​of the two parameters included in different access control parameter sets may be the same or different.

[0128] This modification method is equivalent to extending the content of the access control parameter set. One access control parameter set (or one set) corresponds to one access category, but access control parameter sets applicable to different access identities may also be provided for one access category, which further facilitates implementing sophisticated access control.

[0129] As briefly described above, in this embodiment of the present application, a first category of access classes may be assigned to a UE. For example, different access classes may be assigned to different types of UEs. The access class assigned to the UE may be the first category of access classes or a general user access class. For example, the first category of access classes may include one or more of access class 0 to access class 9. For example, the first category of access classes may include all access classes from access class 0 to access class 9. Alternatively, among the ten access classes from access class 0 to access class 9, only some access classes may be currently used, and the remaining access classes may be unused. In this case, the first category of access classes in this embodiment of the present application may include unused access classes from access class 0 to access class 9. For example, access class 0 to access class 5 are currently used, but access class 6 to access class 9 are unused. In this case, the first category of access classes in this embodiment of the present application may include access class 6 to access class 9. In other words, when an access class is assigned to a UE in this embodiment of the present application, one of access class 6 to access class 9 may be assigned. Alternatively, the first category of access classes may further include other access classes other than access class 0 to access class 9. Alternatively, the first category of access classes may include other access classes without including access class 0 to access class 9. For example, one or more access classes numbered 16 or greater are newly defined as the first category of access classes. In this embodiment of the present application, an example is used in which the first category of access classes includes access class 0 to access class 9.

[0130] In this embodiment of the present application, an access class may also be written to a subscriber identity module (SIM) card. The access class of the UE in this embodiment of the present application is different from the existing access class of the UE, or in other words, the correspondence between the access class and the access identity in this embodiment of the present application is different from the existing correspondence. Currently, the access class of the UE is also written to the SIM card. Therefore, when the access class in this embodiment of the present application is written to the SIM card, the access class needs to be distinguished from the access class written to the existing SIM card. For example, in this embodiment of the present application, a new file, such as a first file or an extension file, may be added to the SIM, and the access class assigned in this embodiment of the present application is written to the first file. When the access class described in this embodiment of the present application is assigned to a UE, the access class of the UE is written to the first file of the SIM card installed in the UE. When an original access class is assigned to a UE, the access class of the UE is written to an original file (also called a legacy file) of a SIM card installed in the UE. If it is determined for a UE that the access class of the UE is written to a first file of a SIM card, the UE may determine to use the new correspondence (i.e., the correspondence between an access class and an access identity) provided in this embodiment of the present application to determine the access identity of the UE. If the UE determines that the access class of the UE is written to an original file of a SIM card, the UE may determine to use the original correspondence (i.e., the correspondence between an access class and an access identity) to determine the access identity of the UE.

[0131] Alternatively, in other methods, the UE may be enabled to determine whether the UE corresponds to the new access class provided in this embodiment of the present application or the original access class. For example, when the new access class provided in this embodiment of the present application is assigned to the UE, the access class of the UE may still be written to the original file of the SIM card, and indication information, for example, referred to as first information, may be added to the access class. The first information indicates that the access class is a newly defined access class. However, when the original access class is assigned to the UE, the UE does not correspond to the first information. If the UE determines that the access class of the UE corresponds to the first information, the UE may determine to use the new correspondence provided in this embodiment of the present application to determine the access identity of the UE. If the UE determines that the access class of the UE does not correspond to the first information, the UE may determine to use the original correspondence to determine the access identity of the UE.

[0132] A UE to which this embodiment of the present application is applicable, or a UE to which the first category access class is assigned, is, for example, a RedCap UE. If the UE is a legacy UE, the first category access class cannot be assigned. In this case, the original access class can be assigned to the legacy UE, and the first category access class provided in this embodiment of the present application does not need to be assigned. From this perspective, the first category access class can be considered to be assigned to a RedCap UE. In this embodiment of the present application, RedCap UEs can be further classified into multiple different types, and different access classes can be assigned to these different types of UE. Alternatively, in this embodiment of the present application, a UE to which the first category access class is assigned may also include other UEs, for example, other UEs with limited capabilities other than RedCap UEs, or may also include general UEs or what are called legacy UEs, i.e., UEs with unlimited capabilities.

[0133] When the UEs are classified into different types, the classification may be performed based on different factors. For example, the division factors may include one or more of the following: a bandwidth supported by the UE, a number of antennas supported by the UE, an application scenario of the UE, a maximum data transmission rate supported by the UE, or a maximum transport block size supported by the UE. For example, the UEs are classified into different types based on the bandwidth supported by the UE, or the UEs are classified into different types based on the number of antennas supported by the UE, or the UEs are classified into different types based on the application scenario of the UE, or the UEs are classified into different types based on the maximum data transmission rate supported by the UE, or the UEs are classified into different types based on the bandwidth supported by the UE and the number of antennas supported by the UE, or the UEs are classified into different types based on the application scenario of the UE, the maximum data transmission rate supported by the UE, and the maximum transport block size supported by the UE, etc. For example, if the number of antennas supported by a UE is 1T1R or 1T2R, a UE that supports 1T1R may be classified as one type of UE, and a UE that supports 1T2R may be classified as another type of UE. An application scenario of a UE may also be understood as an embodiment of a UE. For example, if the UE is a wristband, it may be considered as an application scenario; if the UE is a sensor, it may be considered as another application scenario; or if the UE is a camera, it may be considered as yet another application scenario.

[0134] The first category of access classes described in this embodiment of the present application may be considered different from the existing access classes 0 to 9. This is because the first category of access classes in this embodiment of the present application correspond to the first category of access identities. Specifically, the correspondence between a specific access class and a specific access identity is not limited in this embodiment of the present application. For example, in this embodiment of the present application, access class 0 and access class 1 correspond to access identity 3, access class 2 corresponds to access identity 4, access class 3 corresponds to access identity 5, access class 4 corresponds to access identity 6, access class 5 corresponds to access identity 7, access class 6 corresponds to access identity 8, access class 7 and access class 8 correspond to access identity 9, and access class 9 corresponds to access identity 10. However, this is merely an example, and the specific correspondence is not limited thereto.

[0135] For example, UEs are classified into different types based on the bandwidth supported by the UE. For example, a first type of UE is a RedCap UE that supports a bandwidth of 5M or 10M, and a second type of UE is a RedCap UE that supports a bandwidth of 20M. Access Class 1 is assigned to the first type of RedCap UE, and Access Class 2 is assigned to the second type of RedCap UE. For example, Access Class 1 corresponds to Access Identity 3, and Access Class 2 corresponds to Access Identity 4.

[0136] The first category of access classes in this embodiment of the present application corresponds to the first category of access identities, and the first category of access identities are applicable to respective access control parameters, so that different UEs are applicable to different access control parameters. When access control is performed by those terminal devices, different access control parameters may be used to perform access control separately for different terminal devices. For example, terminal devices required by the network or terminal devices that are more in need of accessing the network can have priority in accessing the network, thereby meeting the requirements of the terminal devices and the network.

[0137] S22: The UE determines, based on the access identity of the UE, that the UE applies a first access control parameter set among the at least one access control parameter set, where the first access control parameter set may belong to the first set or may not belong to any set, as a whole.

[0138] The UE determines, based on the access identity of the UE, that the UE applies a first access control parameter set among the at least one access control parameter set. In implementation, the UE determines, based on the access identity and access category of the UE, that the UE applies a first access control parameter set among the at least one access control parameter set.

[0139] For example, the UE may determine, based on the access category of the UE, that the UE corresponds to a first access control parameter set among the at least one access control parameter set, and then, based on the access identity of the UE, determine whether the UE applies the first access control parameter set.

[0140] The UE may determine an access category number corresponding to the UE based on the service initiated by the UE for access in Table 2, i.e., may determine the access category of the UE. An access control parameter set corresponds to an access category. For example, one access control parameter set among the at least one access control parameter set corresponds to one access category, and the correspondence is known to the UE. Therefore, the UE may determine an access control parameter set corresponding to the access category of the UE, for example, the first access control parameter set.

[0141] In this embodiment of the present application, the access class of the UE belongs to a first category of access class, and the first category of access class corresponds to a first category of access identity, and the UE can determine the access identity of the UE based on the access class of the UE. The UE may determine the access class of the UE by reading SIM card information every time the UE is powered on, and determine the access identity of the UE based on the access class of the UE. However, during the execution process after powering on, the UE does not need to perform the operation of determining the access identity of the UE based on the access class of the UE. The access control parameter set can indicate the access identity to which the access control parameter set is applicable by using corresponding indication information (e.g., second indication information, third indication information, or fourth indication information), so that the UE can determine whether the UE applies the first access control parameter set based on the access identity of the UE.

[0142] Alternatively, the UE may determine P access control parameter sets applicable to the UE from at least one access control parameter set based on the access identity of the UE, and then determine a first access control parameter set corresponding to the UE from the P access control parameter sets based on the access category of the UE, where P is a positive integer.

[0143] Alternatively, the UE may determine, based on the access identity of the UE, to apply a first access control parameter set among the at least one access control parameter set without using the access category. For example, the UE determines P access control parameter sets applicable to the UE from the at least one access control parameter set based on the access identity of the UE, whereby the P access control parameter set is the first access control parameter set. In this case, the first access control parameter set includes the P access control parameter sets.

[0144] In short, how the UE determines the first access control parameter set is not limited in this embodiment of the present application.

[0145] S23: The network device transmits at least one auxiliary parameter set, and the UE correspondingly receives at least one auxiliary parameter set from the network device. For example, when the network device transmits at least one auxiliary parameter set in the first cell, the UE receives at least one auxiliary parameter set in the first cell.

[0146] The network device may transmit at least one auxiliary parameter set by using a system message. For example, the system message is SIB1. When SIB1 corresponding to this embodiment of the present application and an existing SIB1 are the same SIB1, it is considered that the network device transmits both the at least one auxiliary parameter set and the at least one access control parameter set (or at least one set) in SIB1. Alternatively, the at least one auxiliary parameter set may be transmitted separately by using another message. The message may be, for example, a system message or another broadcast message, or a unicast message.

[0147] In this embodiment of the present application, in order to better perform separate access control for different types of UEs, auxiliary parameter sets may be further configured for different types of terminal devices, so as to further perform separate access control for different types of UEs by using the auxiliary parameter sets. For example, in this embodiment of the present application, auxiliary parameter sets are separately configured for one or more access classes, or auxiliary parameter sets are separately configured for one or more access identities. For example, an auxiliary parameter set is configured for each access class among one or more access classes, that is, the access class and the auxiliary parameter set can be in one-to-one correspondence, or one auxiliary parameter set is uniformly configured for one or more access classes, that is, only one auxiliary parameter set is configured regardless of the number of one or more access classes. As another example, an auxiliary parameter set may be configured for one or more access identities. identity , i.e., the access identity and the auxiliary parameter set can be in one-to-one correspondence, or one auxiliary parameter set is uniformly set for one or more access identities, i.e., only one auxiliary parameter set is set regardless of the number of one or more access identities.

[0148] An auxiliary parameter set among the at least one auxiliary parameter set may include one or more of the following parameters: a probability factor, a time factor, random access resource information, or a first threshold. For example, the auxiliary parameter set may include a probability factor, or the auxiliary parameter set may include a time factor, or the auxiliary parameter set may include random access resource information, or the auxiliary parameter set may include a probability factor and a time factor, or the auxiliary parameter set may include a probability factor, a time factor, and random access resource information, or the auxiliary parameter set may include a probability factor, a time factor, random access resource information, and a first threshold, etc. The random access resource information may also be referred to as dedicated random access resource information, indicating that the random access resource information is dedicated for use by UEs applicable to the auxiliary parameter set and cannot be used by other UEs. The auxiliary parameter set may be, for example, any auxiliary parameter set among the at least one auxiliary parameter set.

[0149] For example, the probability factor may be expressed as a UAC barring scale factor, uac-BarringFactor-new, or in other formats. The probability factor may be used to adjust the barring factor included in the access control parameter set. The value of the probability factor may be greater than 0. Furthermore, the value of the probability factor may be less than 1 or greater than 1. For example, if the access class or access identity of the UE is configured in the auxiliary parameter set, the UE may use the auxiliary parameter set. If the auxiliary parameter set includes a probability factor, the UE uses the probability factor by obtaining a value based on the probability factor and the barring factor included in the access control parameter set corresponding to the UE. For example, the value is called an access barring probability, and the access barring probability is used by the UE to determine whether the UE is allowed to access the current cell. The UE obtains the access barring probability based on the probability factor and the barring factor by multiplying the probability factor by the barring factor. For example, if the probability factor is denoted as X and the access barring probability is denoted as uac-BarringFactor-new, then uac-BarringFactor-new = uac-BarringFactor × X. For example, if the barring factor included in the access control parameter set corresponding to the UE is 0.3 and the value of the probability factor included in the auxiliary parameter set corresponding to the UE's access class or access identity is 0.5, the UE may determine that the access barring probability is 0.15, and the UE may determine whether the UE is allowed to access the current cell based on 0.15. For example, the UE may generate a random number and compare it with 0.15. If the random number is less than 0.15, the UE is allowed to access the current cell, and if the random number is greater than or equal to 0.15, the UE is prohibited from accessing the current cell. If the value of the probability factor included in the auxiliary parameter set is set to 0, it indicates that the UE of the access class or access identity corresponding to the auxiliary parameter set is prohibited from accessing.

[0150] Alternatively, the UE can obtain the access barring probability based on the probability factor and the barring factor by adding the probability factor to the barring factor or subtracting the probability factor from the barring factor to obtain the access barring probability. For example, uac-BarringFactor-new = uac-BarringFactor + X, or uac-BarringFactor-new = |uac-BarringFactor-X|. Note that the absolute value sign is added to account for the possibility that a negative number may appear after subtraction. After obtaining the access barring probability, the UE uses the access barring probability in the same manner as described above. Details will not be described again.

[0151] Alternatively, the UE may obtain the access barring probability based on the probability factor and the barring factor in other ways, which is not limited.

[0152] For example, the time factor may be expressed as a UAC restriction time factor, uac-BarringTime-new, or in other formats. The value of the time factor may be greater than 0. Furthermore, the value of the time factor may be less than 1 or greater than 1. For example, if the UE's access class or access identity is configured in an auxiliary parameter set, the UE may use the auxiliary parameter set. If the auxiliary parameter set includes a time factor, the UE uses the time factor by deriving a value based on the time factor and the access barring time included in the access control parameter set corresponding to the UE. The value is, for example, called a barring time. The barring time is used to prohibit the UE from accessing the current cell, or in other words, to prohibit the UE from accessing the current cell within the barring time. The UE obtains the barring time based on the time factor and the access barring time by multiplying the time factor by the value of the access barring time. For example, if the time factor is represented as Y and the barring time is represented as uac-BarringTime-new, then (uac-BarringTime-new) = (uac-BarringTime) × Y. The content in parentheses represents a parameter, and "-" belongs to the representation format of the parameter and does not represent a minus sign. This also applies hereinafter. For example, if the value of the access barring time included in the access control parameter set corresponding to the UE is 30 seconds (s) and the value of the time factor included in the auxiliary parameter set corresponding to the UE's access class or access identity is 2, the UE may determine that the barring time is 60 s. For example, when the UE determines that the UE is barred from accessing the current cell based on the access barring probability, the UE may start timer T390, and the UE generates a random number. In this case, the timer period of timer T390 may be obtained based on the barring time and the random number. For example, the timer period of timer T390 is equal to (0.7 + 0.6 × rand) × barring time, where rand represents the random number. Before timer T390 expires, the UE is barred from accessing the cell.When or after timer T390 expires, the UE may generate the random number again to redetermine whether the UE is allowed to access the cell based on the access barring probability.

[0153] Alternatively, the UE can obtain the barring time based on the time factor and the access barring time by adding the time factor to the access barring time or subtracting the time factor from the access barring time to obtain the barring time. For example, (uac-BarringTime-new) = (uac-BarringTime) + Y, or (uac-BarringTime-new) = (uac-BarringTime) - Y. Note that the absolute value sign is added to account for the possibility that a negative number may appear after the subtraction. After obtaining the barring time, the UE uses the barring time in the same manner as described above. The details will not be described again.

[0154] Alternatively, the UE may obtain the barring time based on the time factor and the access barring time in other ways, which is not limited.

[0155] When an auxiliary parameter set is configured for a UE's access identity or access class, the random access resource information included in the auxiliary parameter set may be used by the UE to perform random access to the current cell. For example, the random access resource information may indicate a random access channel (RACH) occasion, a random access preamble index set, a RACH occasion and preamble index set, or other random access resources. For example, a network device configures the random access resource information for the auxiliary parameter set. When the network device receives a random access request (e.g., a random access preamble) from the UE regarding the random access resource information, the network device may determine that the UE is applicable to the auxiliary parameter set. In this manner, the network device can determine the identity of the UE by using the first message (Msg1) in the random access process. When no additional random access resources are allocated to the UE, the network device may determine the identity of the UE by using the fifth message (Msg5) in the random access process. Therefore, for a network device, different types of UEs can be distinguished based on different random access resource information. For example, the network device may schedule different resources for different types of UEs in a subsequent random access process, or after the random access is successful, the network device may schedule different resources for different types of UEs to further implement differentiated control on different types of UEs.

[0156] The first threshold is a threshold for a first parameter, and the first parameter may indicate a signal quality of the UE. For example, the first parameter may be reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), or signal to interference plus noise ratio (SINR). By setting the first threshold, the UE may determine whether to use an auxiliary parameter set corresponding to the UE's access identity or access class. For example, the auxiliary parameter set is set for the UE's access identity or access class, and the auxiliary parameter set includes the first threshold. The UE may determine the value of the first parameter through measurement. If the value of the first parameter measured by the UE is less than the first threshold, the UE may use the auxiliary parameter set. For usage, see the above description. If the value of the first parameter acquired by the UE through measurement is equal to or greater than the first threshold, the UE may not use the auxiliary parameter set. For example, the UE uses the access control parameter set corresponding to the UE to determine whether the UE is allowed to access the current cell. When a UE is allowed to access the current cell, the UE does not need to use the random access resource indicated by the random access resource information included in the auxiliary parameter set, and may use other random access resources. For UEs with poor signal quality, when a large number of UEs access the network, the signal quality of these UEs is poor, so the network needs to allocate a large number of resources to these UEs to enable them to communicate. For UEs with good signal quality, the network device only needs to allocate a small number of resources to enable the UE to achieve a high transmission rate. For UEs with poor signal quality, the network device needs to allocate a large number of resources to enable the UE to achieve a certain transmission rate.As a result, the resource overhead of the network device increases, and the efficiency of the network device decreases. Therefore, in this embodiment of the present application, the first threshold is set so that the auxiliary parameter set can be used by users with poor signal quality. For example, the access of such users is restricted by using the auxiliary parameter set (e.g., the probability factor is set to a small value, the signal quality of the set random access resources is poor, or the number of random access resources is small). Because users with poor signal quality have difficulty accessing the network device, the network device does not need to allocate resources to users with poor signal quality, and thereby the resources of the network device can be provided to users with good signal quality, and the efficiency of the network device is improved. In this manner, it can be seen that access control can be performed separately for different types of UEs, and also, access control can be performed separately for UEs with different signal qualities.

[0157] Alternatively, at least one auxiliary parameter set may be predefined or specified in a protocol and therefore does not need to be transmitted by the network device. Alternatively, the auxiliary parameter set may not be configured. Therefore, S23 is an optional step and is not required.

[0158] S24: The network device sends first indication information, and the UE receives the first indication information from the network device accordingly. The auxiliary parameter sets sent by the network device at S23 may include all auxiliary parameter sets indicated by the first indication information.

[0159] The network device may send the first indication information by using a system message. For example, the system message is SIB1. When SIB1 and an existing SIB1 corresponding to this embodiment of the present application are the same SIB1, the network device is considered to send the first indication information and at least one access control parameter set (or at least one set) in SIB1, and at least one auxiliary parameter set may be sent in another message. Alternatively, when at least one auxiliary parameter set is also sent by using SIB1, the network device sends the first indication information, at least one auxiliary parameter set, and at least one access control parameter set in SIB1. Alternatively, the network device may send the first indication information and at least one auxiliary parameter set in one message, which may be, for example, a system message other than SIB1, or another broadcast message, or a unicast message, and send the at least one access control parameter set in the other message. Alternatively, the first indication information may be sent separately by using a message other than SIB1. The message may be, for example, a system message or other broadcast message, or may be a unicast message.

[0160] The network device needs to notify the UE of one or more access classes for which the auxiliary parameter set is configured by the network device or one or more access identities for which the auxiliary parameter set is configured by the network device. In this case, the network device may transmit first indication information. The first indication information may indicate that the auxiliary parameter set is configured for one or more access classes. After receiving the first indication information, the UE can determine one or more access classes for which the auxiliary parameter set is configured, thereby enabling the UE to determine, based on the UE's access classes, whether the auxiliary parameter set is configured for the access classes. Alternatively, the first indication information may indicate that the auxiliary parameter set is configured for one or more access identities. After receiving the first indication information, the UE can determine one or more access identities for which the auxiliary parameter set is configured, thereby enabling the UE to determine, based on the UE's access identities, whether the auxiliary parameter set is configured for the access identities.

[0161] For example, the first indication information may be implemented by using a bitmap. When the first indication information indicates that the auxiliary parameter set is configured for one or more access classes, the number of bits included in the bitmap may be equal to the total number of access classes that need to be indicated. For example, the first indication information in this case may be represented as uac-accessclassbitmap. For example, the new access classes in this embodiment of the present application include access class 0 to access class 0, and there are a total of 10 access classes. In this case, the bitmap may include 10 bits, and the 10 bits are in one-to-one correspondence with the 10 access classes. For example, when the value of a bit in the bitmap is "1", it indicates that the auxiliary parameter set is configured for the access class corresponding to that bit, or when the value of a bit in the bitmap is "0", it indicates that the auxiliary parameter set is not configured for the access class corresponding to that bit. For example, when the bitmap is "0101000000", it indicates that the network device indicates that auxiliary parameter sets are configured separately for access class 1 and access class 3, but auxiliary parameters are not configured for other access classes. For example, the network device transmits the first indication information and at least one auxiliary parameter set in one message. The message is called a first message. The first message may be, for example, SIB1 or another message. In this case, SIB1 may include a bitmap and the auxiliary parameter set indicated by the bitmap. For example, SIB 1 is "0101000000", SIB1 further includes an auxiliary parameter set corresponding to access class 1 and an auxiliary parameter set corresponding to access class 3.

[0162] For example, the network device sets auxiliary parameter sets separately for access class 1 and access class 3. For example, auxiliary parameter set 1 is set for access class 1, and auxiliary parameter set 2 is set for access class 3. 3 The two auxiliary parameter sets are sent in one message, for example. For example, a message can be configured with two auxiliary parameter sets as follows:

number

[0163] UAC Bar Scale Factor X1 represents a probability factor included in Supplementary Parameter Set 1, UAC Bar Time Factor Y1 represents a time factor included in Supplementary Parameter Set 1, and the RACH resources included in Supplementary Parameter Set 1 include a dedicated RACH occasion and a dedicated preamble index set. UAC Bar Scale Factor X2 represents a probability factor included in Supplementary Parameter Set 2, UAC Bar Time Factor Y2 represents a time factor included in Supplementary Parameter Set 2, and the RACH resources included in Supplementary Parameter Set 2 include a dedicated RACH occasion and a dedicated preamble index set.

[0164] Alternatively, when the first indication information indicates that an auxiliary parameter set is configured for one or more access identities, the number of bits included in the bitmap may be equal to the total number of access identities that need to be indicated. For example, the first indication information in this case may be represented as uac-accessidentitybitmap. For example, the first category of access identities in this embodiment of the present application includes access identity 3 to access identity 10, with a total of eight access classes. In this case, the bitmap may include eight bits, and the eight bits correspond one-to-one to the eight access identities. For example, when the value of a bit in the bitmap is "1," it indicates that an auxiliary parameter set is configured for the access identity corresponding to that bit, or when the value of a bit in the bitmap is "0," it indicates that an auxiliary parameter set is not configured for the access identity corresponding to that bit. For example, when the bitmap is "01010000," it indicates that the network device indicates that the network device has configured auxiliary parameter sets for access identity 3 and access identity 5 separately, but has not configured auxiliary parameters for other access identities. For example, the network device transmits the first indication information and at least one auxiliary parameter set in one message. The message is called a first message. The first message may be, for example, SIB1 or another message. In this case, SIB1 may include a bitmap and the auxiliary parameter set indicated by the bitmap. For example, SIB 1 is "01010000", SIB1 further includes an auxiliary parameter set corresponding to access identity 3 and an auxiliary parameter set corresponding to access identity 5.

[0165] Of course, the first indication information may be implemented in other ways in addition to a bitmap. For example, if the first indication information indicates that an auxiliary parameter set is configured for one or more access classes, the first indication information may include an access class number (i.e., an access class number or an access class ID). In this case, an access class corresponding to an access class number included in the first indication information is an access class for which the auxiliary parameter set is configured, and an access class corresponding to an access class number not included in the first indication information is an access class for which the auxiliary parameter set is not configured. As another example, if the first indication information indicates that an auxiliary parameter set is configured for one or more access identities, the first indication information may include an access identity number (i.e., an access identity number or an access identity ID). In this case, an access identity corresponding to an access identity number included in the first indication information is an access identity for which the auxiliary parameter set is configured, and an access identity corresponding to an access identity number not included in the first indication information is an access identity for which the auxiliary parameter set is not configured.

[0166] Alternatively, the access class or access identity for which the auxiliary parameter set is set may be predefined or specified in the protocol and therefore does not need to be signaled by the network device. Alternatively, the auxiliary parameter set may not be set for the access class or access identity. Therefore, S24 is an optional step and is not required.

[0167] S25: The UE determines that the UE supports the first auxiliary parameter set. For example, the UE determines that the UE supports the first auxiliary parameter set based on the first indication information and the access identity or access class of the UE.

[0168] After receiving the first indication information, the UE may determine an access class indicated by the first indication information. If the access class of the UE is one of the access classes indicated by the first indication information, the UE may determine that the UE corresponds to the first auxiliary parameter set among the at least one auxiliary parameter set. Alternatively, after receiving the first indication information, the UE may determine an access identity indicated by the first indication information. If the access identity of the UE is one of the access identities indicated by the first indication information, the UE may determine that the UE corresponds to the first auxiliary parameter set among the at least one auxiliary parameter set.

[0169] If the network device does not send the first indication information, for example, if the access class or access identity to which the auxiliary parameter set is set is predefined or specified in the protocol, the UE may determine the auxiliary parameter set corresponding to the UE, for example, the first auxiliary parameter set, based on the access identity or access class of the UE.

[0170] If the auxiliary parameter set is not configured for the access class or the access identity, the UE does not need to determine the auxiliary parameter set corresponding to the UE, so S25 is an optional step.

[0171] S26: The UE determines whether the UE is authorized to access the first cell based on the first access control parameter set, or the UE determines whether the UE is authorized to access the first cell based on the first access control parameter set and the first auxiliary parameter set.

[0172] If the UE does not determine an auxiliary parameter set, for example, an auxiliary parameter set is not configured for the access identity or access class of the UE, or the network device does not further configure an auxiliary parameter set for the access class or access identity (S23, S24, and S25 are not performed), the UE determines whether the UE is authorized to access the first cell based on the first access control parameter set. For how the UE determines whether the UE is authorized to access the first cell based on the first access control parameter set, please refer to the relevant descriptions in the above description of parameters included in the access control parameter set.

[0173] Alternatively, if the UE further determines a first auxiliary parameter set, the first auxiliary parameter set includes a first threshold, and the value of the first parameter measured by the UE is greater than or equal to the first threshold, the UE still determines whether the UE is allowed to access the first cell based on the first access control parameter set.

[0174] Alternatively, the UE further determines a first auxiliary parameter set, and if the first auxiliary parameter set does not include the first threshold value, or if the first auxiliary parameter set includes the first threshold value and the value of the first parameter measured by the UE is smaller than the first threshold value, the UE determines whether the UE is authorized to access the first cell based on the first auxiliary parameter set and the first access control parameter set. For how the UE determines whether the UE is authorized to access the first cell based on the first auxiliary parameter set and the first access control parameter set, please refer to the relevant descriptions in the above description of parameters included in the auxiliary parameter set.

[0175] If the UE is authorized to access the first cell, the UE may perform random access to the first cell. If the UE determines, based on the first access control parameter set, that the UE is authorized to access the first cell, the UE may select corresponding random access resources to perform random access to the first cell. Alternatively, if the UE determines, based on the first auxiliary parameter set and the first access control parameter set, that the UE is authorized to access the first cell, and the first auxiliary parameter set includes random access resource information, the UE may perform random access to the first cell by using the random access resources indicated by the random access resource information.

[0176] In this embodiment of the present application, the access class assigned to the terminal device is a first category access class. However, the first category access class corresponds to the first category access identity. That is, the first category access class may correspond to a new access identity. Correspondingly, different access classes (or different access identities) are applicable to different access control parameters. Therefore, access control is different When run on a terminal device, Those Access control parameters can be applied to different terminal devices for separate access control, and differentiated control with finer granularity is implemented. For example, a terminal device required by the network or a terminal device that has a greater need to access the network can have priority access to the network, thereby satisfying the requirements of the terminal device and the network.

[0177] Next, the embodiment of the present application provides a second communication method. Figure 3 is a flowchart of the method. The following description uses an example in which the method is applied to the network architecture shown in Figure 1.

[0178] For ease of explanation, an example in which the method is performed by a network device and a UE is used below. This embodiment of the present application is applied to the network architecture shown in Figure 1. Therefore, the network device described below may be, for example, an access network device in the network architecture shown in Figure 1, and the UE described below may be a UE in the network architecture shown in Figure 1.

[0179] S31: The network device transmits at least one access control parameter set, and the UE correspondingly receives at least one access control parameter set from the network device. For example, when the network device transmits at least one access control parameter set in a first cell, the UE receives at least one access control parameter set in the first cell. The first cell is a cell from which the UE should initiate random access. In other words, the UE expects to initiate random access in the first cell.

[0180] Before accessing the network device, the UE may receive at least one access control parameter set. For example, the network device may transmit the at least one access control parameter set in the first cell by using a system message. The system message may be, for example, SIB1 or another system message. In this case, the UE receives the system message in the first cell to obtain the at least one access control parameter set. The access control parameter set corresponds to an access category. For example, each access control parameter set in the at least one access control parameter set corresponds to an access category. Referring to Table 2, the UE may determine the access category of the UE based on the service initiated by the UE for access, so that the UE can determine the access control parameter set corresponding to the UE. Furthermore, the access control parameter set has an applicable access identity. In this embodiment of the present application, a new access class may not be assigned to the UE, and the UE continues to apply the original access class. In short, the UE can determine the access control parameter set corresponding to the UE's access identity based on the UE's access category, and then determine whether the UE applies the access control parameter set based on the UE's access identity. When the UE applies the access control parameter set, the UE may determine whether the UE is authorized to access the network device or whether the UE is authorized to access the first cell based on the access control parameter set.

[0181] Alternatively, in this embodiment of the present application, a new access class may be assigned to the UE. For example, different access classes may be assigned to different types of UEs. The access class assigned to the UE may be a first category access class or a general user access class. For the first category access class, please refer to the related description in the embodiment shown in FIG. 2. Unlike the embodiment shown in FIG. 2, in this embodiment of the present application, when access classes are assigned to a UE, corresponding access identities may not be configured for those access classes. In other words, the new access class assigned to the UE in this embodiment of the present application does not correspond to any access identity. After the UE determines an access control parameter set based on the UE's access category, the UE considers that the UE can apply the access control parameter set because the UE's access class does not correspond to any access identity. In other words, when a new access class is assigned to a UE in this embodiment of the present application, the UE can apply at least one access control parameter set.

[0182] The UE to which this embodiment of the present application is applicable is, for example, a RedCap UE. Alternatively, the UEs participating in the classification in this embodiment of the present application may further include other UEs, for example, UEs other than RedCap UEs with limited capabilities, or may further include general UEs or what are called legacy UEs, i.e., UEs with no restricted capabilities.

[0183] In this embodiment of the present application, the access control parameter set may include a restriction factor and an access restriction time, for the description of the two parameters, please refer to the description of the embodiment shown in FIG.

[0184] S32: The UE determines, based on an access identity of the UE, that the UE applies a first access control parameter set among the at least one access control parameter set.

[0185] For further details of S32, please refer to the description of S22 in the embodiment shown in FIG.

[0186] S33: The network device sends an auxiliary parameter set, and the UE receives an auxiliary parameter set from the network device accordingly. There may be one or more auxiliary parameter sets.

[0187] The network device may transmit the auxiliary parameter set by using a system message. For example, the system message is SIB1. In other words, the network device transmits both the auxiliary parameter set and the at least one access control parameter set in SIB1. Alternatively, the auxiliary parameter set may be transmitted by using another system message. Alternatively, the network device may transmit the auxiliary parameter set by using another broadcast message, or the network device may transmit the auxiliary parameter set by using a unicast message so that the corresponding UE separately transmits the auxiliary parameter set.

[0188] In this embodiment of the present application, the network device may send one or more auxiliary parameter sets, and the one or more auxiliary parameter sets are applicable to the RedCap UE. In order to better perform separate access control for the RedCap UE and the legacy UE, it can be considered that the auxiliary parameter set may be configured for the RedCap UE, so that the RedCap UE performs access control by using the auxiliary parameter set. Depending on the auxiliary parameter set, the RedCap UE can access more easily, or the RedCap UE cannot perform access easily.

[0189] One auxiliary parameter set may include one or more of the following parameters: a probability factor, a time factor, random access resource information, or a first threshold value, etc. For details of these parameters, please refer to the embodiment shown in FIG.

[0190] Alternatively, one or more auxiliary parameter sets may be predefined or specified in a protocol, and therefore do not need to be transmitted by the network device. Alternatively, in this embodiment of the present application, the auxiliary parameter sets may not be configured, and the network device naturally does not need to transmit the auxiliary parameter sets. Therefore, S33 is an optional step and is not required. If the auxiliary parameter sets are not configured, the UE only needs to determine whether the UE is allowed to access the first cell according to existing rules.

[0191] S34: The UE determines whether the UE is authorized to access the first cell based on the first access control parameter set, or the UE determines whether the UE is authorized to access the first cell based on the first access control parameter set and the first auxiliary parameter set. If the network device transmits multiple auxiliary parameter sets and the UE receives multiple auxiliary parameter sets in S33, the first auxiliary parameter set may be one of the multiple auxiliary parameter sets, or if the network device transmits one auxiliary parameter set and the UE receives the auxiliary parameter set in S33, the first auxiliary parameter set is the auxiliary parameter set.

[0192] In this embodiment of the present application, a new access class or access identity may be configured for the UE, and the UE may determine whether the UE applies a supplemental parameter set based on the new access class or access identity. Alternatively, neither a new access class nor a new access identity may be configured for the UE, and the UE may continue to use the original access class and access identity. In this case, the UE may determine whether the UE applies a supplemental parameter set in other ways. The following describes several ways for the UE to determine whether a supplemental parameter set is applicable by using examples.

[0193] 1. Neither a new access class nor a new access identity is configured for the UE. In this case, the UE may use one of the following methods to determine whether the UE applies the auxiliary parameter set:

[0194] For example, the first information may be preset in some UEs, and the first information indicates that the UEs apply the auxiliary parameter set. In this case, the UEs for which the first information is set apply the auxiliary parameter set, and the UEs for which the first information is not set do not apply the auxiliary parameter set. For example, in this embodiment of the present application, the first information may be preset for RedCap UEs, or the first information may be preset for other types of UEs.

[0195] As another example, the UE may determine whether the auxiliary parameter set is applicable based on the UE's capabilities. For example, if the UE's capabilities are lower than the first capabilities, the UE applies the auxiliary parameter set. Otherwise, the UE does not apply the auxiliary parameter set. For example, if the first capabilities are bandwidth capabilities and the bandwidth capabilities are 40M, and the UE only supports a bandwidth of 20M, the UE's capabilities are lower than the first capabilities. As another example, if the first capabilities are antenna capabilities and the antenna capabilities are 2T4R, and the antennas supported by the UE are 1T1R or 1T2R, the UE's capabilities are lower than the first capabilities.

[0196] As another example, the UE may determine whether an auxiliary parameter set is applicable by a method such as protocol predefinition (or preconfiguration in the UE). For example, the protocol may specify that the auxiliary parameter set is applicable to a smart band and a smart watch, and that the auxiliary parameter set is inapplicable to the UE in other application scenarios. Alternatively, the protocol may specify that the auxiliary parameter set is applicable to both 1T1R and 1T2R, and that the auxiliary parameter set is inapplicable to UEs supporting other numbers of antennas. Alternatively, the protocol may specify that the auxiliary parameter set is applicable to both 20M bandwidth and 40M bandwidth, and that the auxiliary parameter set is inapplicable to UEs supporting other bandwidths. In this manner, the UE can determine whether to apply the auxiliary parameter set based on the protocol or preconfigured information.

[0197] As another example, the UE may determine whether to apply the auxiliary parameter set based on an application scenario of the UE. For example, it may be predefined that a UE applicable to some scenarios can apply the auxiliary parameter set. These scenarios include, for example, a sensor, a smart band, or a smart watch. If the UE determines that the UE is a sensor, the UE can apply the auxiliary parameter set, and if the UE is a mobile terminal, the UE does not apply the auxiliary parameter set.

[0198] As another example, the UE may determine the auxiliary parameter set applicable to the UE based on the UE's access class or access identity (e.g., original access class or original access identity), that is, when the UE first determines whether the UE is a RedCap UE, the UE determines the auxiliary parameter set applicable to the UE based on the access class or access identity.

[0199] In some of the above determination methods, the network device may transmit multiple auxiliary parameter sets. The auxiliary parameter sets correspond to the access class of the UE, and different access classes correspond to different auxiliary parameter sets. Therefore, the UE can select a corresponding auxiliary parameter set based on the access class of the UE. For example, a UE may determine that a first auxiliary parameter set is the auxiliary parameter set corresponding to the access class of the UE. Alternatively, the network device may transmit the auxiliary parameter set. The auxiliary parameter set is independent of information such as the UE's access class, and the same auxiliary parameter set is applicable to all application scenarios of the UE for which the first information is configured. Alternatively, the network device may transmit multiple auxiliary parameter sets. The auxiliary parameter sets correspond to the access identity of the UE, and different access identities correspond to different auxiliary parameter sets. Therefore, the application scenario of the UE can select a corresponding auxiliary parameter set based on the access identity of the application scenario of the UE. For example, a UE may determine that a first auxiliary parameter set is the auxiliary parameter set corresponding to the access identity of the UE. Alternatively, the network device may transmit the auxiliary parameter set. The auxiliary parameter set is independent of information such as the access identity of the UE, and the same auxiliary parameter set is applicable to all UEs to which the auxiliary parameter set is applicable. Furthermore, in some of the above cases, the same access class may correspond to different access categories. In this case, different access categories corresponding to the same access class may apply the same auxiliary parameter set or different auxiliary parameter sets. Alternatively, the same access identity may correspond to different access categories. In this case, different access categories corresponding to the same access identity may apply the same auxiliary parameter set or different auxiliary parameter sets.

[0200] 2. Configure a new access class or a new access identity for the UE. In this case, the UE may use one of the following methods to determine whether the UE applies the auxiliary parameter set:

[0201] For example, in this embodiment of the present application, a new access class may be configured for the UE, and the UE may determine whether to apply the auxiliary parameter set based on the access class. For example, in this embodiment of the present application, a first category access class is assigned to the UE, and the first category access class does not explicitly indicate an access identity. For an explanation of the first category access class, please refer to the relevant content in the embodiment shown in FIG. 2. For example, information about the new access class of the UE may be configured in the SIM card of the UE, and the UE may determine whether to apply the auxiliary parameter set based on the access class information included in the configuration information of the SIM card of the UE. For example, if the UE determines that the access class of the UE is the first category access class based on the access class information included in the configuration information of the SIM card of the UE, the UE determines that the UE applies the auxiliary parameter set. Otherwise, the UE determines that the UE does not apply the auxiliary parameter set. Alternatively, information about the new access class of the UE may not be configured in the SIM card, and the UE may determine the access class of the UE in other ways. For example, the correspondence between the first category of access classes and application scenarios may be defined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it is defined that smart bands and smart watches correspond to access class 0, and smart phones correspond to access class 1. Alternatively, the first category of access classes may be defined by a method such as protocol predefinition (or preconfiguration in the UE). classThe correspondence between the number of antennas supported by the UE and the number of antennas may be determined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it may be specified that 1T1R corresponds to access class 0 and 1T2R corresponds to access class 1. Alternatively, the correspondence between the first category access class and the bandwidth of the UE may be determined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it may be specified that 20M corresponds to access class 0 and 40M corresponds to access class 1. In some of the above methods, the UE can determine a new access class corresponding to the UE based on the protocol or preconfigured information.

[0202] In this case, the network device may transmit multiple auxiliary parameter sets. The auxiliary parameter sets correspond to a first category of access classes, and different access classes in the first category of access classes correspond to different auxiliary parameter sets. Therefore, when a first category of access class is configured for a UE, the UE can select a corresponding auxiliary parameter set based on the UE's access class. For example, a UE may determine that a first auxiliary parameter set is the auxiliary parameter set corresponding to the UE's access class. Alternatively, the network device may transmit the auxiliary parameter set. The auxiliary parameter set is independent of information such as the UE's specific access class, and the same auxiliary parameter set is applicable to all UEs configured with the first category of access class. Furthermore, in this case, the same access class may correspond to different access categories. In this case, different access categories corresponding to the same access class may apply the same auxiliary parameter set or different auxiliary parameter sets. This feature is also applicable to the embodiment shown in FIG. 2.

[0203] As another example, in this embodiment of the present application, a new access identity may be configured for the UE, and the UE may determine whether to apply the auxiliary parameter set based on the access identity. For example, in this embodiment of the present application, a first category access identity may be assigned to the UE, and the first category access identity may not correspond to any access class, or may certainly correspond to an access class. This is not a limitation in this embodiment of the present application. For access identities included in the first category access identity, please refer to the related description in the embodiment shown in FIG. 2. For example, information about the new access identity of the UE may be configured in the SIM card of the UE, and the UE may determine whether to apply the auxiliary parameter set based on the access identity information included in the configuration information of the SIM card of the UE. For example, if the UE determines that the UE's access identity is a first category access identity based on the access identity information included in the configuration information of the SIM card of the UE, the UE determines that the UE applies the auxiliary parameter set. Otherwise, the UE determines that the UE does not apply the auxiliary parameter set. Alternatively, the information of the new access identity of the UE may not be configured in the SIM card, and the UE may determine the access identity of the UE in other ways. For example, the correspondence between the first category of access identity and the application scenario may be defined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it may be specified that a smart band and a smart watch correspond to access identity 3, and a smartphone corresponds to access identity 4. Alternatively, the correspondence between the first category of access identity and the number of antennas supported by the UE may be defined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it may be specified that 1T1R corresponds to access identity 3, and 1T2R corresponds to access identity 4.Alternatively, the correspondence between the access identity of the first category and the bandwidth of the UE may be determined by a method such as protocol predefinition (or preconfiguration in the UE). For example, it may be defined that 20M corresponds to access identity 3, and 40M corresponds to access identity 4. In the above-mentioned several methods, the UE can determine a new access identity corresponding to the UE based on the protocol or preconfigured information.

[0204] In this case, the network device may transmit multiple auxiliary parameter sets. The auxiliary parameter sets correspond to a first category of access identity, and different access identities in the first category of access identity correspond to different auxiliary parameter sets. Therefore, when a first category of access identity is configured for a UE, the UE can select a corresponding auxiliary parameter set based on the UE's access identity. For example, a UE may determine that a first auxiliary parameter set is the auxiliary parameter set corresponding to the UE's access identity. Alternatively, the network device may transmit the auxiliary parameter set. The auxiliary parameter set is independent of information such as the UE's specific access identity, and the same auxiliary parameter set is applicable to all UEs configured with the first category of access identity. Furthermore, in this case, the same access identity may correspond to different access categories. In this case, different access categories corresponding to the same access identity may apply the same auxiliary parameter set or different auxiliary parameter sets. This feature is also applicable to the embodiment shown in FIG. 2.

[0205] Alternatively, the UE may determine whether to apply the auxiliary parameter set in another manner, and the specific manner is not limited.

[0206] In this case, for example, if the UE applies the first auxiliary parameter set, the access class of the UE may determine whether the UE is authorized to access the first cell based on the first auxiliary parameter set and the first access control parameter set. If the UE does not apply the first auxiliary parameter set, for example, if the UE is a legacy UE, the UE may determine whether the UE is authorized to access the first cell based on the first access control parameter set without using the auxiliary parameter set. For details of what is included in the auxiliary parameter set, please refer to the description of the embodiment shown in Figure 2. For details of how the UE determines whether the UE is authorized to access the cell based on the auxiliary parameter set and the access control parameters, please refer to the description of the embodiment shown in Figure 2.

[0207] In this embodiment of the present application, the auxiliary parameter set may be configured for some UEs. For example, the auxiliary parameter set is configured for a RedCap UE, so that the RedCap UE can determine whether it is allowed to access a cell by using the auxiliary parameter set. In this way, access control is performed separately for the RedCap UE and the legacy UE, so that the control granularity is finer.

[0208] With reference to the accompanying drawings, the following describes an apparatus configured to implement the above method in the embodiments of the present application. Therefore, all the above contents can be used in the following embodiments. The repeated contents will not be described again.

[0209] 4 is a schematic block diagram of a communication device 400 according to an embodiment of the present application. For example, the communication device 400 is, for example, a terminal device or a network device. For example, the communication device 400 can implement the functions of the terminal device in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3. Alternatively, the communication device 400 can implement the functions of the network device in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3.

[0210] The communication device 400 includes a transceiver unit 420 and a processing unit 410. Optionally, the communication device 400 may further include a storage unit, which may communicate with the processing unit 410 but is not shown in FIG. 4 . Alternatively, the communication device 400 may not include a storage unit, or the storage unit may be located outside the communication device 400. For example, the communication device 400 may be a terminal device, or a chip or a combined component applied to a terminal device, or a component having the functionality of the above-mentioned terminal device. Alternatively, the communication device 400 may be a network device, or a chip or a combined component applied to a network device, or a component having the functionality of the above-mentioned network device. When the communication device 400 is a terminal device or a network device, the processing unit 410 may include a processor, such as a baseband processor. The baseband processor may include one or more central processing units (CPUs). The transceiver unit 420 may be a transceiver. The transceiver may include an antenna, a radio frequency circuit, etc. The transceiver may include a transmitter and a receiver. The transceiver may implement the functions of the transmitter and the receiver. Alternatively, the transmitter and the receiver may be two separately located functional modules, but the two functional modules are collectively referred to as a transceiver in this embodiment of the present application. When the communication device 400 is a component having the functions of the above-mentioned terminal device or network device, the transceiver unit 420 may be a radio frequency unit, and the processing unit 410 may be a processor, for example, a baseband processor. When the communication device 400 is a chip system, the transceiver unit 420 may be an input / output interface of the chip (e.g., a baseband chip), and the processing unit 410 may be a processor of the chip system and may include one or more central processing units.It should be understood that the processing unit 410 in this embodiment of the present application may be implemented by a processor or processor-related circuitry, and the transceiver unit 420 may be implemented by a transceiver or transceiver-related circuitry.

[0211] In implementation, when communications apparatus 400 is configured to implement the functionality of the terminal device of the embodiment shown in Figure 2, processing unit 410 may be configured to perform all operations other than the receiving and transmitting operations performed by the terminal device in the embodiment shown in Figure 2, e.g., S22, S25, and S26, and / or other processes used to support the techniques described herein. Transceiver unit 420 may be configured to perform all receiving and transmitting operations performed by the terminal device in the embodiment shown in Figure 2, e.g., S21, S23, and S24, and / or to support other processes of the techniques described herein.

[0212] In implementation, when the communication apparatus 400 is configured to implement the functionality of the terminal device of the embodiment shown in Figure 3, the processing unit 410 may be configured to perform all operations other than the receiving and transmitting operations performed by the terminal device in the embodiment shown in Figure 3, e.g., S32 and S34, and / or to support other processes of the techniques described herein. The transceiver unit 420 may be configured to perform all receiving and transmitting operations performed by the terminal device in the embodiment shown in Figure 3, e.g., S31 and S33, and / or to support other processes of the techniques described herein.

[0213] In implementation, when communications apparatus 400 is configured to implement the functionality of the network device of the embodiment shown in Figure 2, processing unit 410 may be configured to perform all operations other than the receiving and transmitting operations performed by the network device in the embodiment shown in Figure 2, e.g., an operation of determining at least one auxiliary parameter set, and / or may be configured to support other processes of the techniques described herein. Transceiver unit 420 may be configured to perform all receiving and transmitting operations performed by the network device in the embodiment shown in Figure 2, e.g., S21, S23, and S24, and / or may be configured to support other processes of the techniques described herein.

[0214] In implementation, when the communications apparatus 400 is configured to implement the functionality of the network device of the embodiment shown in Figure 3, the processing unit 410 may be configured to perform all operations other than the receiving and transmitting operations performed by the network device in the embodiment shown in Figure 3, e.g., an operation of determining the auxiliary parameter set, and / or to support other processes of the techniques described herein. The transceiver unit 420 may be configured to perform all receiving and transmitting operations performed by the terminal device in the embodiment shown in Figure 3, e.g., S31 and S33, and / or to support other processes of the techniques described herein.

[0215] Furthermore, the transceiver unit 420 may be a functional module, and the functional module may complete both a transmitting operation and a receiving operation. For example, the transceiver unit 420 may be configured to perform all transmitting and receiving operations performed by the terminal device or the network device in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3. For example, if a receiving operation is performed, the transceiver unit 420 may be considered a receiving unit, and if a transmitting operation is performed, the transceiver unit 420 may be considered a transmitting unit. Alternatively, the transceiver unit 420 may be two functional modules. The transceiver unit 420 may be considered a collective term for the two functional modules. The two functional modules include a receiving unit and a transmitting unit. The transmitting unit is configured to complete a transmitting operation. For example, Transmitting unit The receiving unit may be configured to perform all the sending operations performed by the terminal device or the network device in the embodiment shown in Figure 2 or the embodiment shown in Figure 3. The receiving unit is configured to complete the receiving operations. For example, the receiving unit may be configured to perform all the receiving operations performed by the terminal device or the network device in the embodiment shown in Figure 2 or the embodiment shown in Figure 3.

[0216] For specific functions that may be implemented by the processing unit 410 and the transceiver unit 420, please refer to the description of the operations performed by the terminal device in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3, or please refer to the description of the operations performed by the network device in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3.

[0217] An embodiment of the present application further provides a communication apparatus, which may be a terminal device or a circuit, configured to perform the operations performed by the terminal device in the above method embodiments.

[0218] When the communication device is a terminal device, FIG. 5 is a simplified schematic diagram of the structure of the terminal device. For ease of understanding and convenience of illustration, FIG. 5 uses an example in which the terminal device is a mobile phone. As shown in FIG. 5, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device. The processor is primarily configured to process communication protocols and communication data, control the terminal device, execute software programs, process data of the software program, etc. The memory is primarily configured to store software programs and data. The radio frequency circuit is primarily configured to convert between baseband signals and radio frequency signals and process radio frequency signals. The antenna is primarily configured to receive and transmit radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display, or a keyboard, is primarily configured to receive data input by a user and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0219] When data needs to be transmitted, after performing baseband processing on the data to be transmitted, the processor outputs the baseband signal to the radio frequency circuit, which then performs radio frequency processing on the baseband signal and transmits the radio frequency signal to the outside through the antenna in the form of electromagnetic waves. When data is transmitted to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal to a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal to data and processes the data. For simplicity, only one memory and one processor are shown in FIG. 5. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium, a storage device, etc. The memory may be located independently of the processor or may be incorporated into the processor. This is not a limitation of this embodiment of the present application.

[0220] In this embodiment of the present application, the antenna and radio frequency circuit having the receiving and transmitting functions may be considered as a transceiver unit of the terminal device (the transceiver unit may be one functional unit, which may implement the transmitting function and the receiving function, or the transceiver unit may include two functional units, i.e., a receiving unit capable of implementing the receiving function and a transmitting unit capable of implementing the transmitting function), and the processor having the processing function may be considered as a processing unit of the terminal device. As shown in FIG. 5, the terminal device includes a transceiver unit 510 and a processing unit 520. The transceiver unit may also be referred to as a transceiver machine, a transceiver, a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, a component in the transceiver unit 510 configured to implement the receiving function may be considered as a receiving unit, and a component in the transceiver unit 510 configured to implement the transmitting function may be considered as a transmitting unit. That is, the transceiver unit 510 includes a receiving unit and a transmitting unit. A transceiver unit is sometimes also called a transceiver machine, transceiver, transceiver circuitry, etc. A receiving unit is sometimes also called a receiver machine, receiver, receiving circuitry, etc. A transmitting unit is sometimes also called a transmitter machine, transmitter, transmitting circuitry, etc.

[0221] The transceiver unit 510 is configured to perform transmitting and receiving operations on the terminal device side in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3, and the processing unit 520 is configured to perform operations other than transmitting and receiving operations on the terminal device side in the embodiment shown in FIG. 2 or the embodiment shown in FIG. 3.

[0222] When the communication device is a chip device or circuit, the device may include a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit and / or a communication interface. The processing unit may be an integrated processor, a microprocessor, or an integrated circuit.

[0223] An embodiment of the present application provides a first communication system. The communication system includes a terminal device of the embodiment shown in Fig. 2 and may include a network device of the embodiment shown in Fig. 2. The terminal device or the network device is implemented, for example, by using the communication apparatus 400 of Fig. 4.

[0224] An embodiment of the present application provides a second communication system. The communication system includes the terminal device of the embodiment shown in Fig. 3 and may include the network device of the embodiment shown in Fig. 3. The terminal device or the network device is implemented, for example, by using the communication apparatus 400 of Fig. 4.

[0225] It should be understood that the processors described in the embodiments of the present application may be a CPU, or may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates, transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0226] It should be noted that if the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate, transistor logic device, or a discrete hardware component, the memory (storage module) is incorporated into the processor.

[0227] It should be noted that memory as described herein is intended to comprise, without being limited to, such memory and any other suitable types of memory.

[0228] It should be understood that the sequence numbers of the above processes do not imply an execution order in various embodiments of the present application, and the execution order of the processes should be determined based on the internal logic and functions of the processes, and should not be construed as any limitation on the implementation process of the embodiments of the present application.

[0229] Those skilled in the art may realize that, in combination with the examples described in the embodiments disclosed herein, the units and algorithm steps may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether a function is implemented by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but it should not be considered that the implementation goes beyond the scope of the present application.

[0230] In some embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical division of function, and actual implementation may involve other divisions. For example, multiple units or components may be combined or integrated into other systems, or some features may be omitted or not implemented. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be implemented through some interface. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0231] The units described as separate parts may or may not be physically separated, and the parts shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0232] Furthermore, the functional units of the embodiments of the present application may be integrated into one processing unit, each unit may exist physically alone, or two or more units may be combined into one unit.

[0233] When a function is implemented in the form of a software functional unit and sold or used as an independent product, the function may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may essentially be implemented, or a part that contributes to the prior art, or a part of the technical solution may be implemented in the form of a software product. A computer software product is stored in a storage medium and includes some instructions that instruct a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of the present application. The above computer-readable storage medium may be any available medium that can be accessed by a computer. For example, and without limitation, a computer-readable medium may include random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, removable hard disk, other optical disk storage medium, disk storage medium, or other magnetic storage device, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer.By way of example, but not by way of limitation, many types of RAM may be used, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchlink dynamic random access memory (synchlink DRAM, SLDRAM), and direct rambus random access memory (direct rambus RAM, DR RAM).

[0234] The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the embodiments of the present application. Any modifications or substitutions that can be easily made by those skilled in the art within the technical scope disclosed in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be subject to the scope of protection of the claims.

[0235] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to Chinese Patent Application No. 202010921252.3, filed with the State Intellectual Property Office of the People's Republic of China on September 4, 2020, for an invention entitled "ACCESS CONTROL METHOD, TERMINAL, AND NETWORK DEVICE," which is incorporated herein by reference in its entirety. This application also claims priority to Chinese Patent Application No. 202011066491.1, filed with the State Intellectual Property Office of the People's Republic of China on September 30, 2020, for an invention entitled "COMMUNICATION METHOD AND DEVICE," which is incorporated herein by reference in its entirety.

Claims

1. 1. A communication method performed by a terminal device, comprising: receiving at least one access control parameter set and at least one further parameter set; determining, based on an access identity of the terminal device, that the terminal device applies a first access control parameter set and a first further parameter set, wherein the first access control parameter set belongs to the at least one access control parameter set, the first further parameter set belongs to the at least one further parameter set, the access identity of the terminal device is an access identity of a first category, the access identity of the first category corresponds to the first further parameter set, and the access identity of the first category is access identity 3, which indicates that the terminal device applies a disaster condition; determining whether the terminal device is permitted to access a first cell based on the first access control parameter set and the first further parameter set, the first cell being a cell from which the terminal device receives the first access control parameter set, the first further parameter set including a probability factor, the probability factor being used to determine an access barring probability, the access barring probability being used to determine whether the terminal device is permitted to access the first cell, the first access control parameter set including an access barring time, the access barring time being used to determine a duration during which the terminal device is not permitted to access the first cell; A communication method comprising:

2. The first access control parameter set is: a regulatory factor used to determine whether the terminal device is authorized to access the first cell; and access control parameters for an access identity, used to indicate an access identity to which the first access control parameter set is applicable; and further comprising one or more access control parameters of The method of claim 1.

3. the first access control parameter set corresponds to an access category of the terminal device, and the first further parameter set corresponds to the access category of the terminal device; Determining that the terminal device applies a first access control parameter set and a first further parameter set based on an access identity of the terminal device includes: determining, based on the access identity of the terminal device and the access category of the terminal device, that the terminal device applies the first access control parameter set and the first further parameter set.

3. The method according to claim 1 or 2.

4. Receiving at least one access control parameter set and at least one further parameter set includes: receiving a system message including the at least one access control parameter set and the at least one further parameter set.

4. The method according to any one of claims 1 to 3.

5. 1. A communication method performed by a network device, comprising: determining at least one access control parameter set and at least one further parameter set, wherein the at least one access control parameter set and the at least one further parameter set are used to determine whether a terminal device is permitted to access a first cell based on an access identity of the terminal device, the at least one access control parameter set comprising a first access control parameter set, the at least one further parameter set comprising a first further parameter set, the access identity of the terminal device being an access identity of a first category, the access identity of the first category corresponding to the first further parameter set, the access identity of the first category being access identity 3 indicating that a disaster condition applies to the terminal device, the first further parameter set comprising a probability factor, the probability factor being used to determine an access barring probability, the access barring probability being used to determine whether the terminal device is permitted to access the first cell, the first access control parameter set comprising an access barring time, the access barring time being used to determine a duration during which the terminal device is not permitted to access the first cell; transmitting said at least one access control parameter set and said at least one further parameter set; A communication method comprising:

6. The first access control parameter set: a regulatory factor used to determine whether the terminal device is authorized to access the first cell; and access control parameters for an access identity, used to indicate an access identity to which the first access control parameter set is applicable; [0033] including one or more access control parameters of The method of claim 5.

7. The method of claim 1, wherein the first access control parameter set corresponds to an access category of the terminal device and the access identity of the terminal device, and the first further parameter set corresponds to the access category of the terminal device and the access identity of the terminal device.

7. The method according to claim 5 or 6.

8. Sending the at least one access control parameter set and the at least one further parameter set comprises: sending a system message including the at least one access control parameter set and the at least one further parameter set.

8. The method according to any one of claims 5 to 7.

9. A terminal device having one or more processors, one or more memories, and one or more computer programs, the one or more computer programs are stored in the one or more memories, the one or more computer programs having instructions; The instructions, when executed by the one or more processors in the terminal device, enable the terminal device to perform the communication method according to any one of claims 1 to 4. Terminal device.

10. 1. A network device having one or more processors, one or more memories, and one or more computer programs, the one or more computer programs are stored in the one or more memories, the one or more computer programs having instructions; The instructions, when executed by the one or more processors in the network device, enable the network device to perform the communication method of any one of claims 5 to 8. Network devices.

11. configured to store a computer program; When the computer program is executed on a computer, the computer is capable of executing the communication method according to any one of claims 1 to 4. A computer-readable storage medium.

12. configured to store a computer program; When the computer program is executed on a computer, the computer is capable of executing the communication method according to any one of claims 5 to 8. A computer-readable storage medium.

13. A chip having one or more processors and a communication interface, The one or more processors are configured to read instructions to perform the communication method of any one of claims 1 to 4. Tips.

14. A chip having one or more processors and a communication interface, The one or more processors are configured to read instructions to perform the communication method of any one of claims 5 to 8. Tips.

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