Access method and device

Abstract

This disclosure provides an access method and apparatus. The method includes the step of a terminal device receiving first information. The first information indicates that access by a first type of terminal device is prohibited or permitted, and the first type of terminal device satisfies the first condition. The terminal device accesses the network device based on the first information, or is prohibited from accessing the network device. Access control can be performed on a terminal device by implementing the method described above.

Description

Technical Field

[0001] Cross - reference to related applications This application claims the right of priority of Chinese Patent Application No. 202310405752.5, titled "Access Method and Device", filed with the China National Intellectual Property Administration on April 7, 2023, the whole of which is incorporated herein by reference.

[0002] This application relates to the field of communication technologies, and particularly to access methods and devices.

Background Art

[0003] In a 3rd generation partnership project (3GPP (registered trademark)) mobile communication network, the network needs to perform access control on terminal devices, that is, the network can control whether the access of the terminal device is permitted. With the evolution of mobile communication technologies, multiple types of terminal devices have been defined. Different types of terminal devices have different capabilities, for example, different indicated radio frequency bandwidths and different supported peak rates.

Summary of the Invention

[0004] Therefore, in a mobile communication network, how to implement access control for terminal devices is an urgent problem to be solved.

[0005] This application provides an access method and device for performing access control on terminal devices.

Means for Solving the Problems

[0006] According to a first aspect, the present application provides an access method. The method is performed by a terminal device or a module or chip within a terminal device. An example in which the method is performed by a terminal device is used in this specification for illustrative purposes. The method includes the steps of receiving first information, the first information indicating that access to a first type of terminal device is prohibited or permitted, that the baseband processing bandwidth of a first type of terminal device is less than the maximum transmission bandwidth, that the peak data transmission rate of a first type of terminal device is less than the peak data transmission rate of a second type of terminal device, that the baseband processing bandwidth of a second type of terminal device is equal to the maximum transmission bandwidth, or that a first type of terminal device satisfies a first condition; and accessing a network device or being prohibited from accessing a network device based on the first information.

[0007] With respect to the first aspect, the first information indicates whether or not access to the network by a first type of terminal device supporting a peak data rate of a first value is prohibited. Alternatively, for example, the first value may be a value of 10 Mbps or less. For example, the first value is 10 Mbps.

[0008] In another example, the first value may be less than or equal to 6 Mbps. For example, the first value may be 6 Mbps.

[0009] In the first aspect, the first information indicates whether or not access to the network by a first type of terminal device supporting a peak data rate of a first value is prohibited. The first value is related to the product of the number of layers, the modulation order, and the scaling factor.

[0010] The number of layers may also be specified by higher-level layer parameters. For example, the number of layers may be the maximum number of supported layers specified by the higher-level layer parameters, namely maxNumberMIMO-LayersPDSCH, maxNumberMIMO-LayersCB-PUSCH, and maxNumberMIMO-LayersNonCB-PUSCH. MIMO stands for multiple-input multiple-output, and PUSCH stands for physical uplink shared channel.

[0011] The modulation order may also be specified by higher-layer parameters. For example, the modulation order may be the maximum supported modulation order specified by higher-layer parameters, namely the supported modulation order DL and supported modulation order UL. UL indicates uplink, and DL indicates downlink.

[0012] The scaling factor may also be specified by a higher-layer parameter. For example, the scaling factor may be specified by a higher-layer parameter, namely the scaling factor (scalingFactor) and the scaling factor 1024QAM-FR1 (scalingFactor-1024QAM-FR1). QAM stands for Quadrature Amplitude Modulation, and FR1 stands for frequency range 1 (FR1).

[0013] For example, the minimum product of the number of layers, modulation order, and scaling factor is 3.2 or less, and the first value is 10 Mbps.

[0014] In another example, the minimum product of the number of layers, modulation order, and scaling factor is 1.92 or less, and the first value is 6 Mbps. For example, the minimum product of the number of layers, modulation order, and scaling factor is 1 or 1.92, and the first value is 6 Mbps.

[0015] With respect to the first aspect, the first information indicates whether or not access to the network is prohibited for a first type of terminal device satisfying the condition that the product of the number of layers, modulation order, and scaling factor is greater than or equal to a second value.

[0016] In one possible implementation, the second value is less than 4.

[0017] In one example, the second value is 3.2 or less, and the corresponding peak data rate is 10 Mbps. For example, the second value is 3 or 3.2.

[0018] In another example, the second value is 1.92 or less, and the corresponding peak data rate is 6 Mbps. For example, the second value is 1 or 1.92.

[0019] In another possible implementation, the second value may be a smaller value among several second values ​​supported by several first type terminal devices. For example, the first type of the first type terminal device supports a maximum baseband processing bandwidth of 20 MHz, and the corresponding second value is K1, which may be 1 or another value less than 3. The second type of the first type terminal device supports a maximum baseband processing bandwidth of 5 MHz, and the corresponding second value is K2, which may be 3.2 or another value between 3 and 4. In this case, the second value may be a smaller value in K1 and K2.

[0020] Alternatively, multiple terminal devices of type 1 may be understood as multiple terminal devices of type 1 belonging to the same type but having different capabilities.

[0021] In a possible design, the first condition may include at least one of the following: the radio frequency bandwidth of the first type of terminal device exceeds the baseband processing bandwidth; or the maximum transmission bandwidth supported by the first type of terminal device exceeds the baseband processing bandwidth; or the maximum scheduling bandwidth supported by the first type of terminal device exceeds the baseband processing bandwidth; or the maximum bandwidth supported by the first type of terminal device is greater than 5 MHz, for example, 20 MHz; or the maximum bandwidth supported by the first type of terminal device that can be used to transmit in a single slot or single frequency hop is 5 MHz; or the maximum bandwidth supported by the first type of terminal device that can be processed in a single slot is 5 MHz.

[0022] Alternatively, the baseband processing bandwidth of the first type of terminal device may be replaced with the maximum baseband processing bandwidth, the maximum baseband processing bandwidth, the maximum baseband bandwidth, the maximum baseband bandwidth, the maximum bandwidth, the baseband bandwidth, the maximum bandwidth of the terminal device that can be used to transmit in a single slot or a single frequency hop, or the maximum bandwidth that can be processed in a single slot of the terminal device.

[0023] The scheduling bandwidth may be replaced by, alternatively, a scheduled transmission bandwidth, a scheduled downlink channel transmission bandwidth, or a scheduled uplink channel transmission bandwidth.

[0024] In one possible implementation, a maximum bandwidth of 5 MHz may be replaced with the following: when the subcarrier spacing is 15 kHz, the maximum bandwidth is 25 RB, or when the subcarrier spacing is 30 kHz, the maximum bandwidth is 12 RB.

[0025] In one possible implementation, the maximum bandwidth supported by a first type of terminal device and usable for transmission in a single slot or single frequency hop is 5 MHz, which includes the maximum bandwidth supported by a first type of terminal device and usable for transmission in a single slot or single frequency hop is 5 MHz when the first type of terminal device transmits a physical uplink shared channel PUSCH.

[0026] In one possible implementation, the maximum bandwidth that can be supported and processed in a single slot by a first type of terminal device is 5 MHz includes the fact that when the first type of terminal device transmits a physical uplink shared channel PDSCH, the maximum bandwidth that can be supported and processed in a single slot by a first type of terminal device is 5 MHz.

[0027] In a possible design, the first condition may further include that a first type of terminal device supports a peak data transmission rate of a first value, or that a first type of terminal device supports that the product of the number of layers, the modulation order, and the scaling factor is greater than or equal to a second value.

[0028] In a possible design, the first condition may further include that a first type of terminal device operates in frequency range 1 (FR1).

[0029] In a possible design, the method may further include a step of receiving second information. The second information indicates whether access of a second type of terminal device to a network device is prohibited or permitted, and the second type of terminal device meets a second condition. Accessing the network device or being prohibited from accessing the network device based on the first information may include accessing the network device or being prohibited from accessing the network device based on the first information and the second information.

[0030] In a possible design, the second condition is as follows: the maximum bandwidth supported by the second type of terminal device in FR1 is 20 MHz, the maximum bandwidth supported in frequency range 2 (FR2) is 100 MHz, the maximum number of data radio bearers (DRBs) that must be supported by the second type of terminal device is 8, the packet data convergence protocol sequence number size (PDCP SN SIZE) that must be supported by the second type of terminal device is 12, and the PDCP SN size that is optional to support is 18, the radio link control amplitude modulation sequence number size (RLC AM SN SIZE) that must be supported by the second type of terminal device is 12, and the RLC AM SN size that is optional to support is 18, and when operating in FR1, the second type of terminal device supporting one receiving antenna is one downlink multiple-input multiple-output A second type of terminal device that supports multiple-output (MIMO) layers and two receiving antennas supports two downlink MIMO layers; when operating in FR2, a second type of terminal device always supports two receiving antennas and one or two downlink MIMO layers; a second type of terminal device supports carrier aggregation (CA), multi-rate dual connectivity (MR-DC), dual active protocol stack (DAPS), and conditional primary / secondary cell addition or modification (conditional PSCell).This may include at least one of the following: not supporting addition / change (CPAC), and not supporting integrated access and backhaul (IAB) or related features or capabilities.

[0031] In possible designs, the first piece of information is contained in system information block 1, or both the first and second pieces of information are contained in system information block 1.

[0032] In a possible design, the method further includes the terminal device accessing or being denied access to a network device based on an intra-frequency reselection field included in system information block 1. Alternatively, the method further includes system information block 1 including a first intra-frequency reselection field, the first intra-frequency reselection field indicating that access to a network device is denied or permitted for first type terminal devices and second type terminal devices. Alternatively, system information block 1 includes a first intra-frequency reselection field and a second intra-frequency reselection field, the first intra-frequency reselection field indicating that access to a network device is denied or permitted for first type terminal devices, and the second intra-frequency reselection field indicating that access to a network device is denied or permitted for second type terminal devices. The terminal device decides whether to access the current network or be denied access based on the first intra-frequency reselection field included in system information block 1.

[0033] In a possible design, the second information is carried in at least one of the first, second, and third fields. The first field indicates whether access to a network device is prohibited or permitted for first and second type terminal devices, each supporting one antenna; the second field indicates whether access to a network device is prohibited or permitted for first and second type terminal devices, each supporting two antennas; and the third field indicates whether access to a network device is prohibited or permitted for first and second type terminal devices, each supporting half-duplex frequency division multiplexing.

[0034] In possible designs, accessing or being denied access to a network device based on first and second information may include, when the terminal device is a first type of terminal device supporting one antenna, accessing or being denied access to a network device based on first information and a first field; when the terminal device is a first type of terminal device supporting two antennas, accessing or being denied access to a network device based on first information and a second field; or when the terminal device is a first type of terminal device supporting half-duplex frequency division multiplexing, accessing or being denied access to a network device based on first information and a third field. According to this design, only first information is added to the capabilities and supported communication channels of the first type of terminal device, resulting in different methods being implemented for the first type of terminal device to access or be denied access to a network device, thereby reducing information overhead.

[0035] In a possible design, the capabilities of a first type of terminal device include either a first capability or a second capability. The first information includes first sub-information and second sub-information, the first sub-information indicating that access to a network device by a first type of terminal device having the first capability is prohibited or permitted, and the first and second sub-information indicating that access to a network device by a first type of terminal device having the second capability is prohibited or permitted.

[0036] In possible designs, accessing or being denied access to a network device based on first information may include the terminal device being able to access the network device when the terminal device is a first type of terminal device having first capability and first sub-information indicates that access by the first type of terminal device is permitted. Alternatively, the terminal device is denied access to the network device when the terminal device is a first type of terminal device having first capability and first sub-information indicates that access by the first type of terminal device is denied. Alternatively, when the terminal device is a first type of terminal device having second capability, first sub-information indicates that access by the first type of terminal device is permitted, and second sub-information indicates that access by the first type of terminal device having second capability is permitted, and the terminal device accesses the network device. Alternatively, access to the network device is prohibited for a terminal device if it is a first type of terminal device having a second capability, and the first sub-information indicates that access for the first type of terminal device is prohibited, or the second sub-information indicates that access for a first type of terminal device having a second capability is prohibited. According to this design, different methods are designed for accessing or prohibiting access to the network device for first type terminal devices having different capabilities, and as a result, the versatility in deciding whether or not to access the network device by the first type of terminal device can be effectively improved.

[0037] In a possible design, the capabilities of a first type of terminal device include either a first or second capability. The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to a first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to a first type of terminal device having the second capability is prohibited or permitted.

[0038] In possible designs, accessing or being denied access to a network device based on first information may include accessing a network device when the terminal device is a first type of terminal device having first capability and third sub-information indicates that access by a first type of terminal device having first capability is permitted; accessing a network device when the terminal device is a first type of terminal device having second capability and fourth sub-information indicates that access by a first type of terminal device having second capability is permitted; or being denied access to a network device when the terminal device is a first type of terminal device having first capability and third sub-information indicates that access by a first type of terminal device having first capability is prohibited; or being denied access to a network device when the terminal device is a first type of terminal device having second capability and fourth sub-information indicates that access by a first type of terminal device having second capability is prohibited. According to this design, different methods are designed for the capabilities of the first type of terminal device to either access a network device or be denied access to a network device, and as a result, the versatility in which the first type of terminal device decides whether or not to access a network device can be effectively improved.

[0039] In a possible design, the method further includes the step of transmitting either first capability information or second capability information to a network device. The first capability information indicates a first capability, and the second capability information indicates a second capability.

[0040] In a possible design, the first or second capability information is indicated by one of the following messages: message 1 in the random access process, message A in the random access process, message 3 in the random access process, and the radio resource control RRC signaling.

[0041] In a possible design, the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

[0042] In a possible design, the value of the first logical channel identifier is one of 37 to 42, the value of the second logical channel identifier is one of 37 to 42, and the first logical channel identifier is different from the second logical channel identifier.

[0043] In a possible design, the method further includes the step of receiving first or second instruction information from a network device. The first instruction information indicates reporting first capability information, and the second instruction information indicates reporting second capability information.

[0044] In possible designs, the first type of terminal device is an eRedCap UE, and the second type of terminal device is a RedCap UE.

[0045] According to a second aspect, the present application provides an access method. The method is performed by a network device or a module or chip within a network device. An example of the method being performed by a network device is used in this specification for illustrative purposes. The method includes the steps of generating first information, the first information indicating that access to a first type of terminal device is prohibited or permitted, that the baseband processing bandwidth of a first type of terminal device is less than the maximum transmission bandwidth, that the peak data transmission rate of a first type of terminal device is less than the peak data transmission rate of a second type of terminal device, that the baseband processing bandwidth of a second type of terminal device is equal to the maximum transmission bandwidth, or that a first type of terminal device satisfies a first condition, and transmitting the first information.

[0046] With respect to the first aspect, the first information indicates whether or not access to the network by a first type of terminal device that supports a peak data rate of a first value is prohibited.

[0047] Alternatively, in one example, the first value may be less than or equal to 10 Mbps. For example, the first value may be 10 Mbps.

[0048] In another example, the first value may be less than or equal to 6 Mbps. For example, the first value may be 6 Mbps.

[0049] In the first aspect, the first information indicates whether or not access to the network by a first type of terminal device supporting a peak data rate of a first value is prohibited. The first value is related to the product of the number of layers, the modulation order, and the scaling factor.

[0050] The number of layers may also be specified by higher-level layer parameters. For example, the number of layers may be the maximum number of supported layers specified by the higher-level layer parameters, namely maxNumberMIMO-LayersPDSCH, maxNumberMIMO-LayersCB-PUSCH, and maxNumberMIMO-LayersNonCB-PUSCH.

[0051] The modulation order may also be specified by higher-layer parameters. For example, the modulation order may be the maximum supported modulation order specified by the higher-layer parameters, namely supportedModulationOrderDL and supportedModulationOrderUL.

[0052] The scaling factor may also be specified by a higher-layer parameter. For example, the scaling factor may be specified by a higher-layer parameter, namely scalingFactor and scalingFactor-1024QAM-FR1.

[0053] For example, the minimum product of the number of layers, modulation order, and scaling factor is 3.2 or less, and the first value is 10 Mbps.

[0054] In another example, the minimum product of the number of layers, modulation order, and scaling factor is 1.92 or less, and the first value is 6 Mbps. For example, the minimum product of the number of layers, modulation order, and scaling factor is 1 or 1.92, and the first value is 6 Mbps.

[0055] With respect to the first aspect, the first information indicates whether or not access to the network is prohibited for a first type of terminal device satisfying the condition that the product of the number of layers, modulation order, and scaling factor is greater than or equal to a second value.

[0056] In one possible implementation, the second value is less than 4.

[0057] In one example, the second value is 3.2 or less, and the corresponding peak data rate is 10 Mbps. For example, the second value is 3 or 3.2.

[0058] In another example, the second value is 1.92 or less, and the corresponding peak data rate is 6 Mbps. For example, the second value is 1 or 1.92.

[0059] In another possible implementation, the second value may be a smaller value among several second values ​​supported by several first type terminal devices. For example, the first type of the first type terminal device supports a maximum baseband processing bandwidth of 20 MHz, and the corresponding second value is K1, which may be 1 or another value less than 3. The second type of the first type terminal device supports a maximum baseband processing bandwidth of 5 MHz, and the corresponding second value is K2, which may be 3.2 or another value between 3 and 4. In this case, the second value may be a smaller value in K1 and K2.

[0060] Alternatively, multiple terminal devices of type 1 may be understood as multiple terminal devices of type 1 belonging to the same type but having different capabilities.

[0061] In a possible design, the first condition may include at least one of the following: the radio frequency bandwidth of the first type of terminal device exceeds the maximum baseband processing bandwidth; or the maximum transmission bandwidth supported by the first type of terminal device exceeds the maximum baseband processing bandwidth; or the maximum scheduling bandwidth supported by the first type of terminal device exceeds the maximum baseband processing bandwidth; or the maximum bandwidth supported by the first type of terminal device is greater than 5 MHz, for example, 20 MHz; or the maximum bandwidth supported by the first type of terminal device that can be used to transmit in a single slot or single frequency hop is 5 MHz; or the maximum bandwidth supported by the first type of terminal device that can be processed in a single slot is 5 MHz.

[0062] Alternatively, the baseband processing bandwidth of the first type of terminal device may be replaced with the maximum baseband processing bandwidth, the maximum baseband processing bandwidth, the maximum baseband bandwidth, the maximum baseband bandwidth, the maximum bandwidth, the baseband bandwidth, the maximum bandwidth of the terminal device that can be used to transmit in a single slot or a single frequency hop, or the maximum bandwidth that can be processed in a single slot of the terminal device.

[0063] The scheduling bandwidth may be replaced by, alternatively, a scheduled transmission bandwidth, a scheduled downlink channel transmission bandwidth, or a scheduled uplink channel transmission bandwidth.

[0064] In one possible implementation, a maximum bandwidth of 5 MHz may be replaced with the following: when the subcarrier spacing is 15 kHz, the maximum bandwidth is 25 RB, or when the subcarrier spacing is 30 kHz, the maximum bandwidth is 12 RB.

[0065] In one possible implementation, the maximum bandwidth supported by a first type of terminal device and usable for transmission in a single slot or single frequency hop is 5 MHz, which includes the maximum bandwidth supported by a first type of terminal device and usable for transmission in a single slot or single frequency hop is 5 MHz when the first type of terminal device transmits a physical uplink shared channel PUSCH.

[0066] In one possible implementation, the maximum bandwidth that can be supported and processed in a single slot by a first type of terminal device is 5 MHz includes the fact that when the first type of terminal device transmits a physical uplink shared channel PDSCH, the maximum bandwidth that can be supported and processed in a single slot by a first type of terminal device is 5 MHz.

[0067] In a possible design, the first condition may further include that the first type of terminal device supports a peak data rate of a first value, or that the first type of terminal device supports the product of the number of layers, modulation order, and scaling factor being greater than or equal to a second value.

[0068] In a possible design, the first condition may further include that the first type of terminal device operates in frequency range 1 (FR1).

[0069] In a possible design, the method further includes the step of transmitting second information, which indicates whether a second type of terminal device is prohibited from or permitted to access a network device, and the second type of terminal device satisfies the second condition.

[0070] In a possible design, the second condition is as follows: the maximum bandwidth supported by the second type of terminal device in frequency range 1 (FR1) is 20 MHz, the maximum bandwidth supported in frequency range 2 (FR2) is 100 MHz, the maximum number of DRBs that must be supported by the second type of terminal device is 8, the PDCP SN size that must be supported by the second type of terminal device is 12, and the PDCP SN size that is optional to support is 18, the RLC AM SN size that must be supported by the second type of terminal device is 12, and the RLC AM that is optional to support is 12. The specifications may include at least one of the following: the signal-to-noise ratio is 18; when operating in frequency range 1 (FR1), a second type of terminal device supporting one receiving antenna supports one downlink MIMO layer, and a second type of terminal device supporting two receiving antennas supports two downlink MIMO layers; when operating in frequency range 2 (FR2), a second type of terminal device always supports two receiving antennas and one or two downlink MIMO layers; and the second type of terminal device does not support any functions or capabilities associated with CA, MR-DC, DAPS, CPAC, and IAB.

[0071] In possible designs, the first piece of information is contained in system information block 1, or both the first and second pieces of information are contained in system information block 1.

[0072] In a possible design, the method further includes the terminal device accessing or being denied access to a network device based on an intra-frequency reselection field included in system information block 1. Alternatively, the method further includes the system information block 1 including a first IntraFreqReselection field, the first IntraFreqReselection field indicating that access to a network device is denied or permitted for first type terminal devices and second type terminal devices, or the system information block 1 including a first IntraFreqReselection field and a second IntraFreqReselection field, the first IntraFreqReselection field indicating that access to a network device is denied or permitted for first type terminal devices, and the second IntraFreqReselection field indicating that access to a network device is denied or permitted for second type terminal devices.

[0073] In a possible design, the second information is carried in at least one of the first, second, and third fields. The first field indicates whether access is prohibited or permitted for first and second type terminal devices, each supporting one antenna; the second field indicates whether access is prohibited or permitted for first and second type terminal devices, each supporting two antennas; and the third field indicates whether access is prohibited or permitted for first and second type terminal devices, each supporting half-duplex frequency division multiplexing.

[0074] In a possible design, the capabilities of a first type of terminal device include either a first capability or a second capability. The first information includes first sub-information and second sub-information, the first sub-information indicating that access to a network device by a first type of terminal device having the first capability is prohibited or permitted, and the first and second sub-information indicating that access to a network device by a first type of terminal device having the second capability is prohibited or permitted.

[0075] In a possible design, the capabilities of a first type of terminal device include either a first or second capability. The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to a first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to a first type of terminal device having the second capability is prohibited or permitted.

[0076] In a possible design, the method further includes the step of receiving either first capability information or second capability information from a terminal device. The first capability information indicates a first capability, and the second capability information indicates a second capability.

[0077] In a possible design, the first or second capability information is indicated by one of the following messages: message 1 in the random access process, message A in the random access process, message 3 in the random access process, and the radio resource control RRC signaling.

[0078] In a possible design, the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

[0079] In a possible design, the value of the first logical channel identifier is one of 37 to 42, the value of the second logical channel identifier is one of 37 to 42, and the first logical channel identifier is different from the second logical channel identifier.

[0080] In a possible design, the method further includes the step of transmitting either first instruction information or second instruction information. The first instruction information indicates reporting first capability information, and the second instruction information indicates reporting second capability information.

[0081] In a third aspect, the present application further provides a communication device which can implement any method according to the first or second aspect. The communication device may be implemented by hardware or by hardware running corresponding software. The hardware or software includes one or more units or modules corresponding to the aforementioned functions.

[0082] In possible designs, the communication device includes a processor. The processor is configured to support the communication device in performing corresponding functions performed by terminal devices, first network devices, or second network devices in the manner described above. The communication device may further include memory. The memory can be coupled to the processor and stores program instructions and data required by the communication device. Optionally, the communication device further includes interface circuitry. The interface circuitry is configured to support communication between the communication device and devices such as terminal devices.

[0083] In possible designs, the communication device includes corresponding functional modules configured separately to perform the steps of the method described above. These functions may be performed by hardware or by hardware running corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

[0084] In a possible design, the structure of the communication device includes a processing unit, a transmitting unit, and a receiving unit. These units may perform the corresponding functions in the method examples described above. For details, please refer to the description of the method according to any one of the first to fifth embodiments. Details are not described here.

[0085] According to a fourth aspect, one embodiment of the present application further provides a communication device. The communication device includes modules / units for performing any method according to either one of the first or second aspects. These modules / units may be implemented by hardware or by running corresponding software in hardware.

[0086] According to a fifth aspect, one embodiment of the present application provides a communication device including memory and a processor. The processor is configured to execute a computer program or instructions stored in the memory, and the communication device is capable of carrying out any method according to either one of the first or second aspects.

[0087] According to a sixth aspect, one embodiment of the present application further provides a computer-readable storage medium, the computer-readable storage medium containing a computer program. When the computer program is executed on a communication device, the computer-readable storage medium becomes capable of carrying out any method according to either the first or second aspect.

[0088] According to a seventh aspect, one embodiment of the present application further provides a computer program product. When the computer program product is executed on a communication device, the communication device can implement a method according to any one of the first and second aspects, and any possible designs of the first and second aspects.

[0089] According to the eighth aspect, a chip is provided. The chip includes a processor, further including memory, and is configured to implement a method in any one of the first and second aspects, and in any possible implementation form of any one of the aspects. The chip may include a chip, or may include a chip and another separate device.

[0090] According to the ninth aspect, a communication system including terminal devices and network devices is provided.

[0091] The terminal device is configured to implement a method according to the first embodiment and any one of the possible implementations of the first embodiment. The network device is configured to implement a method according to the second embodiment and any one of the possible implementations of the second embodiment.

[0092] These or other embodiments of this application are more concise and easier to understand in the following description of embodiments. [Brief explanation of the drawing]

[0093] [Figure 1] This is a diagram of a mobile communication system applicable to one embodiment of this application. [Figure 2] This is a schematic flowchart of an access method according to one embodiment of this application. [Figure 3] This is a schematic flowchart of an access method according to one embodiment of this application. [Figure 4] This is a diagram showing the structure of a communication device according to one embodiment of this application. [Figure 5] This is a diagram showing the structure of a communication device according to one embodiment of this application. [Modes for carrying out the invention]

[0094] The technical solutions of the embodiments of this application will be described clearly and completely below with reference to the accompanying drawings of the embodiments of this application. It will be clear that the embodiments described are only a part of, and not all, of the embodiments of this application. In the specification, claims, and accompanying drawings of this application, “First,” “Second,” corresponding term numbers, etc., are intended to distinguish similar subjects and do not indicate a particular order or sequence.

[0095] The communication methods provided in the embodiments of this application may be applied to various mobile communication systems, such as the Internet of Things (IoT), Narrowband Internet of Things (NB-IoT), Long Term Evolution (LTE), 5th Generation (5G) communication systems (e.g., 5G New Radio (NR)), LTE and 5G hybrid architectures, or new communication systems emerging in 6G or future communication developments. Alternatively, the communication system may be a machine-to-machine (M2M) network, a machine-type communication (MTC) network, or another network.

[0096] The methods and apparatus provided in the embodiments of this application are based on the same or similar technical concepts. Since the problem-solving principles of the methods and apparatus are similar, cross-referencing may be made between the implementations of the apparatus and methods. No redundant descriptions are provided.

[0097] To facilitate understanding of the embodiments of this application, the communication system shown in Figure 1 is used first as an example to illustrate in detail a communication system applicable to the embodiments of this application. Figure 1 is a diagram of a communication system applicable to a communication method according to one embodiment of this application. As shown in Figure 1, the communication system includes a network device and terminal devices 1 through 6. In the communication system, terminal devices 1 through 6 may transmit uplink data to the network device, and the network device may transmit downlink data from terminal device 1 to terminal device 6. In addition, the communication system may optionally include terminal devices 4 through 6. In this case, in the communication system, the network device may transmit downlink data from terminal devices 4 and 6 to terminal device 5, which then forwards the downlink data to terminal devices 4 and 6.

[0098] In this embodiment of the present application, the network device may be an access network device within a wireless network. For example, the network device may be a radio access network (RAN) node that connects terminal devices to a wireless network, and may also be called an access network device. The network device includes, but is not limited to, evolved node B (eNB), radio network controller (RNC), node B (NodeB, NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), baseband unit (BBU), access point (AP) of a wireless fidelity (WiFi) system, wireless relay node, wireless backhaul node, transmission point (TP), transmission and reception point (TRP), etc. Alternatively, the network device may be a network device within a 5G mobile communication system, such as a next-generation node B (gNB), a transmission reception point (TRP), or a TP within an NR system, or it may be one antenna panel or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system. Alternatively, the network device may be a network node constituting a gNB or a transmission point, such as a BBU or a distributed unit (DU).

[0099] In some deployments, a gNB may include a central unit (CU) and a DU. The gNB may further include an active antenna unit (AAU). The CU performs some functions of the gNB, and the DU performs some functions of the gNB. For example, the CU is responsible for handling non-real-time protocols and services to implement the functions of the radio resource control (RRC) layer. The DU is responsible for handling physical layer protocols and real-time services and implements the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.

[0100] The terminal device in the embodiments of this application may be a wireless terminal device capable of receiving scheduling and instruction information from a network device. The terminal device may also be called user equipment (UE), mobile station (MS), or mobile terminal (MT). Some examples of terminal devices include mobile phones, tablet computers, notebook computers, palmtop computers, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals for industrial control, wireless terminals for the Internet of Vehicles, wireless terminals for self-driving, wireless terminals for remote medical surgery, wireless terminals for smart grids, wireless terminals for transportation safety, wireless terminals for smart cities, wireless terminals for smart homes, device-to-device (D2D) communication terminals, vehicle-to-everything (V2X) communication terminals, intelligent vehicles, telematics boxes (also called in-vehicle transmitters) (T-boxes), and machine-to-machine / machine-type communication devices. These include communications, M2M / MTC terminal devices, and Internet of Things (IoT) terminal devices.

[0101] In embodiments of this application, the device configured to perform the functions of a terminal device may be a terminal device, or it may be a device capable of supporting a terminal device to perform the functions, such as a chip system, or the device may be mounted on a terminal device. In the technical solutions provided in embodiments of this application, the technical solutions provided in embodiments of this application are illustrated by using an example in which the device configured to implement the functions of a terminal device is a terminal device.

[0102] In the embodiments of this application, there may be multiple types of terminal devices. For example, the types of terminal devices may include legacy terminal devices, reduced capability (RedCap) terminal devices, enhanced RedCap (eRedCap) terminal devices, and so on. A legacy terminal device may be an NR release 15 (Rel-15) terminal device or an NR Rel-16 terminal device, but is not limited herein.

[0103] In this application, RedCap terminal devices may also be referred to as first type terminal devices, and eRedCap terminal devices may also be referred to as second type terminal devices.

[0104] Compared to legacy terminal devices, the second type of terminal device is one that has lower transmission capacity or lower cost. The second type of terminal device may be an NR RedCap terminal device. For example, an NR RedCap terminal device may be an NR Rel-17 terminal device or an NR Rel-18 terminal device; however, this is not limited to the present.

[0105] In this application, a second type of terminal device can satisfy the second condition, which may include at least one of the following:

[0106] 1. When a second type of terminal device performs data transmission with a network device, the second type of terminal device may simultaneously use different frequency resources, such as 20 MHz, 10 MHz, or 5 MHz, on a single carrier.

[0107] 2. The antenna configuration supported by the second type of terminal device can be 2T1R, and the antenna configuration supported by the second type of terminal device can be 2T2R.

[0108] 3. The second type of terminal device supports only half-duplex frequency division duplexing (HD FDD).

[0109] 4. The peak data transmission rate of the second type of terminal device is slower than that of legacy terminal devices. The peak data transmission rate may or may not correspond to uplink data transmission. The peak data transmission rate of the second type of terminal device is 80 Mbps or higher.

[0110] 5. The baseband processing bandwidth of the second type of terminal device is equal to the maximum transmission bandwidth.

[0111] 6. The maximum bandwidth supported by the second type of terminal device in frequency range 1 (FR1) is 20 MHz, and the maximum bandwidth supported by the second type of terminal device in frequency range 2 (FR2) is 100 MHz.

[0112] 7. The maximum number of DRBs that must be supported by the second type of terminal device is 8.

[0113] 8. The PDCP SN size that is required to be supported by the second type of terminal device is 12, and the PDCP SN size that is optional to be supported by the second type of terminal device is 18.

[0114] 9. The RLC AM SN size that is required to be supported by the second type of terminal device is 12, and the RLC AM SN size that is optional to be supported by the second type of terminal device is 18.

[0115] 10. When operating in frequency range 1 (FR1), a second type terminal device supporting one receiving antenna supports one downlink MIMO layer, and a second type terminal device supporting two receiving antennas supports two downlink MIMO layers.

[0116] 11. When operating in frequency range 2 (FR2), the second type of terminal device always supports two receiving antennas and one or two downlink MIMO layers, and the second type of terminal device does not support any functions or capabilities related to CA, MR-DC, DAPS, CPAC, and IAB.

[0117] The above is just one example. The second type of terminal device may have other features, which are not listed here.

[0118] In the embodiments of this application, the second type of terminal device can be classified into a second type of terminal device supporting one antenna, a second type of terminal device supporting two antennas, and a second type of terminal device supporting half-duplex frequency division multiplexing.

[0119] In this application, a first type of terminal device can satisfy a first condition, the first condition may include at least one of the following:

[0120] 1. The radio frequency bandwidth of the first type of terminal device exceeds the maximum baseband processing bandwidth.

[0121] 2. The maximum transmission bandwidth supported by the first type of terminal device exceeds the maximum baseband processing bandwidth.

[0122] 3. The maximum scheduling bandwidth supported by the first type of terminal device exceeds the maximum baseband processing bandwidth.

[0123] 4. The first type of terminal device supports a peak data rate of a first value, which may be 10 Mbps or 6 Mbps, and the first condition may further include that the first type of terminal device operates in FR1.

[0124] A first type of terminal device may have a first capability or a second capability. The first capability and the second capability may be defined in different ways.

[0125] In the first definition, for a first type of terminal device having a first capability, in one possible implementation, the peak data transmission rate of the first type of terminal device is a first value, or the product of the number of layers, modulation order, and scaling factor is a third value or greater. For example, when a first type of terminal device may have a first capability, the peak data transmission rate of the first type of terminal device is 10 Mbps, or the product of the number of layers, modulation order, and scaling factor is 1 or greater.

[0126] Optionally, the first value is related to the product of the number of layers, the modulation order, and the scaling factor.

[0127] The third value is optional; it must be a number greater than 0 and less than 3.

[0128] For a first type of terminal device having a second capability, in one possible implementation, the baseband processing bandwidth of the first type of terminal device is less than the maximum transmission bandwidth. Alternatively, the baseband processing bandwidth of the first type of terminal device is less than or equal to a preset value, the radio frequency bandwidth, or the maximum scheduling bandwidth. The preset value may be 5 MHz or greater. For example, the preset value is 5 MHz or the number of RBs corresponding to different subcarriers. The number of RBs corresponding to different subcarriers includes 25 RBs corresponding to a 15 kHz subcarrier interval and 12 RBs corresponding to a 30 kHz subcarrier interval. For example, when the first type of terminal device may have a second capability, the maximum transmission bandwidth of the first type of terminal device is 20 MHz, and the baseband processing bandwidth on which the uplink data channel (PDSCH) and downlink data channel (PUSCH) are transmitted or processed supports 5 MHz.

[0129] In the second definition method, for a first type of terminal device having the first capability, the baseband processing bandwidth of the first type of terminal device is less than or equal to the maximum transmission bandwidth. Alternatively, the baseband processing bandwidth of the first type of terminal device is less than or equal to a preset value, the radio frequency bandwidth, or the maximum scheduling bandwidth. The preset value may be 5 MHz or greater. For example, the preset value is 20 MHz, or the number of RBs corresponding to different subcarriers. The number of RBs corresponding to different subcarriers includes 106 RBs corresponding to a 15 kHz subcarrier interval and 51 RBs corresponding to a 30 kHz subcarrier interval.

[0130] The peak data transmission rate of the first type of terminal device is a first value, or the product of the number of layers, modulation order, and scaling factor is greater than or equal to a third value. For example, when the first type of terminal device may have a first capability, both the maximum transmission bandwidth and baseband processing bandwidth of the first type of terminal device are 20 MHz, the peak data transmission rate of the first type of terminal device is 10 Mbps, or the product of the number of layers, modulation order, and scaling factor is greater than or equal to 1.

[0131] Optionally, the first value is related to the product of the number of layers, the modulation order, and the scaling factor.

[0132] The third value is optional; it must be a number greater than 0 and less than 3.

[0133] In embodiments of this application, the baseband processing bandwidth may also be referred to as the maximum baseband processing bandwidth, maximum baseband processing bandwidth, maximum baseband bandwidth, maximum baseband bandwidth, maximum bandwidth, baseband bandwidth, maximum baseband processing capability, maximum baseband processing capability, maximum baseband capability, maximum baseband capability, maximum capability, baseband capability, etc. This is not limited to the present.

[0134] The maximum transmission bandwidth may also be called the maximum transmission bandwidth, radio frequency bandwidth, or maximum scheduling bandwidth. This is not limited to the above.

[0135] For a first type terminal device having a second capability, in one possible implementation, the baseband processing bandwidth of the first type terminal device is less than the maximum transmission bandwidth, and the peak data transmission rate of the first type terminal device is less than the peak data transmission rate of the second type terminal device. Alternatively, the baseband processing bandwidth of the first type terminal device is less than or equal to a preset value, the radio frequency bandwidth, or the maximum scheduling bandwidth. The preset value may be 5 MHz or greater. For example, the preset value is 5 MHz or the number of RBs corresponding to different subcarriers. The number of RBs corresponding to different subcarriers includes 106 RBs corresponding to a 15 kHz subcarrier interval and 51 RBs corresponding to a 30 kHz subcarrier interval. For example, when the first type terminal device may have a second capability, the maximum transmission bandwidth of the first type terminal device is 20 MHz, and the baseband processing bandwidth on which the uplink data channel (PDSCH) and downlink data channel (PUSCH) are transmitted or processed supports 5 MHz. In addition, the peak data transmission rate of the first type of terminal device is limited to 10 Mbps, or the product of the number of layers, modulation order, and scaling factor is 1 or 3.2 or greater.

[0136] In another possible implementation, the baseband processing bandwidth of the first type terminal device having the second capability can be one of 5MHz, 20MHz, 40MHz, 80MHz, 10MHz, etc., and the baseband processing bandwidth may further support XMHz, where X>20. For example, X may be 40, 80, 100, etc. The peak data transmission rate of the first type terminal device is smaller than the peak data transmission rate of the second type terminal device.

[0137] In embodiments of this application, the first type of terminal device may be further classified into a first type of terminal device supporting one antenna, a first type of terminal device supporting two antennas, and a first type of terminal device supporting half-duplex frequency division multiplexing.

[0138] The above is just one example. The first type of terminal device may have other features, and examples of these will not be described one by one here.

[0139] From the above description, it is clear that there are multiple types of terminal devices in a mobile communication network. Therefore, this application provides a method and apparatus for performing access control for different types of terminal devices.

[0140] The network architectures and service scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions in the embodiments of this application and do not constitute limitations on the technical solutions according to the embodiments of this application. Those skilled in the art will know that, with the development of network architectures and the emergence of new service scenarios, the technical solutions according to the embodiments of this application may also be applicable to similar technical problems.

[0141] In the embodiments of this application, an NR network scenario in a wireless communication network is used as an example to illustrate several scenarios. It should be noted that the solutions of the embodiments of this application may be further applied to other wireless communication networks, and corresponding names may be replaced with the names of corresponding functions in other wireless communication networks.

[0142] Figure 2 is a schematic flowchart of an access method according to one embodiment of the present application. When the method procedure is applied to the system shown in Figure 1, the network device or module or chip within the network device in Figure 1 may perform the method executed by the network device in the following procedure, and the terminal device or module or chip within the terminal device in Figure 1 may perform the method executed by the terminal device in the following procedure. It will be understood that the specific structure of the executable of the method provided in the embodiments of the present application is not particularly limited in the following embodiments, as long as a program that records the code of the method provided in the embodiments of the present application can be executed to perform access according to the method provided in the embodiments of the present application. For example, the executable may be a functional module that can call and execute a program within a terminal device or a network device or a functional module that can call and execute a program within a network device. Hereinafter, only terminal devices or network devices will be used as examples for illustrative purposes.

[0143] S201: The network device transmits at least one of the first piece of information and the second piece of information to the terminal device.

[0144] In this embodiment of the present application, when the terminal device is a first type of terminal device, the terminal device satisfies the first condition, or when the terminal device is a second type of terminal device, the terminal device satisfies the second condition. The first and second conditions have now been described. Further details will not be described below.

[0145] In response, the terminal device receives at least one of the first piece of information and the second piece of information.

[0146] The first and second pieces of information may be carried in the same message or in different messages. For example, a network device may add the first and second pieces of information to system information block (SIB) 1.

[0147] In possible implementations, the first piece of information indicates whether access by a first type of terminal device is prohibited or permitted. The second piece of information indicates whether access by a second type of terminal device is prohibited or permitted.

[0148] Here, the phrase "access by the first type of terminal device is prohibited or permitted" may be replaced with similar statements such as "access by the first type of terminal device to the network device is prohibited or permitted," "access by the first type of terminal device to the network device's cell is prohibited or permitted," "whether access by the first type of terminal device is permitted," or "whether access by the first type of terminal device is prohibited." Details will not be repeated here.

[0149] S202: A terminal device is prohibited from accessing a network device based on at least one of the first and second pieces of information.

[0150] In this application, prohibiting a terminal device from accessing a network device may mean that the network device prohibits the terminal device from accessing the network device, and therefore the terminal device does not access or is unable to access the network device.

[0151] There can be multiple implementations of how terminal devices specifically access network devices, or how access to network devices is specifically prohibited. These implementations are described in detail below.

[0152] In the first possible implementation, the terminal device either accesses the network device based on the first information, or is prohibited from accessing the network device.

[0153] In this implementation, a terminal device can determine, based solely on the first piece of information, whether it is permitted or denied access to a network device. How the first piece of information specifically indicates whether access to the terminal device is denied or permitted, that is, how the terminal device determines, based on the first piece of information, whether it is permitted or denied access to a network device, may include one or more of the following possible implementations.

[0154] Implementation form 1: The first information may directly indicate whether access to a network device by a first type of terminal device is prohibited or permitted, and the terminal device may directly access the network device or be prohibited from accessing the network device based on the first information.

[0155] In implementation form 1, the first information may be carried in a first instruction field. For example, the first instruction field may be located in system information block 1. The first instruction field may be called a cell barred eRedCap (cellBarredRedCap) field, or a cell barredRedCapPR1 (cellBarredRedCapPR1) field, or a cell barredRedCapBW3 / PR3 (cellBarredRedCapBW3 / PR3) field, etc. The specific name of the first instruction field is not limited in this application.

[0156] In implementation form 1, in one implementation form, the first information may indicate that access to the network device is prohibited or permitted based on different values.

[0157] For example, the first piece of information may be barred or not barred. When the first piece of information is barred, it indicates that access to the network device of the first type of terminal device is prohibited. When the first piece of information is not barred, it indicates that access to the network device of the first type of terminal device is permitted.

[0158] Correspondingly, if a terminal device is a first type of terminal device and the first information indicates that the first type of terminal device is prohibited from accessing a network device, for example, if the first information is "barred", the terminal device may be prohibited from accessing the network device. If the first information indicates that the first type of terminal device is permitted to access the network device, for example, if the first information is "notbarred", the terminal device may access the network device.

[0159] In implementation form 1, in another implementation form, if the first information exists in SIB1, for example, if the first information is true, it may indicate that the first type of terminal device is permitted to access the network device.

[0160] If the first information is not present in SIB1, it may indicate that access to network devices by the first type of terminal device is prohibited.

[0161] If the first information is carried in the first indicator field, then whether the first information is present in SIB1 can also be understood as whether the first indicator field is present in SIB1.

[0162] For example, the absence of the first piece of information in SIB1 may indicate that access to the network device by the first type of terminal device is prohibited. The presence of the first piece of information in SIB1 may indicate that access to the network device by the first type of terminal device is permitted.

[0163] Accordingly, if the terminal device is a terminal device of type 1 and the first information is present in the SIB1 received by the terminal device, the terminal device may be able to access the network device; however, if the first information is not present in the SIB1 received by the terminal device, the terminal device may be prohibited from accessing the network device.

[0164] In implementation form 1, when the terminal device is a first type of terminal device, the terminal device may have a first capability or a second capability. This is not limited to the present application.

[0165] According to the method described above, a first type of terminal device may access a network device based solely on first information, or be prohibited from accessing a network device. As a result, a first type of terminal device may conveniently and efficiently access a network device, or be prohibited from accessing a network device.

[0166] Implementation form 2: The first information includes the first sub-information and / or the second sub-information, and the terminal device may access the network device or be prohibited from accessing the network device based on the first sub-information and / or the second sub-information.

[0167] The first sub-information indicates that access to a network device is prohibited or permitted for a first type of terminal device having a first capability, and the first and second sub-information indicate that access to a network device is prohibited or permitted for a first type of terminal device having a second capability. Here, the first capability is the first capability as defined by the first definition method, and the second capability is the second capability as defined by the first definition method.

[0168] In implementation form 2, the first sub-information may be carried by a second instruction field, and the second instruction field may be located in system information block 1. The second instruction field may be called a cell barredRedCapPR1 field, etc. The specific name of the second instruction field is not limited in this application.

[0169] The second sub-information may be carried in a third instruction field, and the third instruction field may be located in system information block 1. The third instruction field may be called a cell barredRedCapBW3 / PR3 field, etc. The specific name of the third instruction field is not limited in this application.

[0170] In implementation form 2, in one implementation form, the first sub-information may indicate, based on different values, that access to a network device of a first type of terminal device having a first capability is prohibited or permitted, and the first sub-information and the second sub-information may indicate, based on different values, that access to a network device of a first type of terminal device having a second capability is prohibited or permitted.

[0171] For example, the first sub-information may be barred or not barred. When the first sub-information is barred, it indicates that access to the network device of a first type of terminal device having a first capability is prohibited. When the first sub-information is not barred, it indicates that access to the network device of a first type of terminal device having a first capability is permitted.

[0172] The second sub-information may be barred or not barred. When either the first or second sub-information is barred, it indicates that access to the network device of the first type terminal device having the second capability is prohibited. When both the first and second sub-information are not barred, it indicates that access to the network device of the first type terminal device having the second capability is permitted.

[0173] Correspondingly, if a terminal device is a first type of terminal device having a first capability, and the first sub-information indicates that the first type of terminal device having the first capability is prohibited from accessing a network device, for example, if the first sub-information is "barred", the terminal device may be prohibited from accessing the network device. If the first sub-information indicates that the first type of terminal device having the first capability is permitted to access a network device, for example, if the first sub-information is "notbarred", the terminal device may be able to access the network device.

[0174] If a terminal device is a first type of terminal device having a second capability, and the first sub-information indicates that the first type of terminal device having the second capability is prohibited from accessing a network device, for example, if the first sub-information is "barred", then the terminal device may be prohibited from accessing the network device. In this implementation, it is not necessary whether the second sub-information indicates that access by the first type of terminal device is prohibited or permitted. The first type of terminal device is prohibited from accessing the network device.

[0175] If a terminal device is a first type of terminal device having a second capability, and the first sub-information and the second sub-information indicate that the first type of terminal device having the second capability is permitted to access a network device, for example, if the first sub-information is notbarred and the second sub-information is notbarred, then the terminal device may access the network device.

[0176] In implementation form 2, in another implementation form, whether access to a network device by a first type of terminal device having a first capability is prohibited or permitted may be indicated by whether the first sub-information is present in SIB1, and whether access to a network device by a first type of terminal device having a second capability is prohibited or permitted may be indicated by whether the first sub-information and the second sub-information are present in SIB1.

[0177] If the first sub-information is carried by the second indicator field, whether the first sub-information exists in SIB1 can also be understood as whether the second indicator field exists in SIB1. If the second sub-information is carried by the third indicator field, whether the second sub-information exists in SIB1 can also be understood as whether the third indicator field exists in SIB1.

[0178] For example, the absence of a first sub-information in SIB1 may indicate that a first type of terminal device having a first capability is prohibited from accessing a network device. The presence of a first sub-information in SIB1 may indicate that a first type of terminal device having a first capability is permitted to access a network device.

[0179] Accordingly, if the terminal device is a first type of terminal device having a first capability, and the first sub-information is present in the SIB1 received by the terminal device, the terminal device may access the network device; or, if the first sub-information is not present in the SIB1 received by the terminal device, the terminal device may be prohibited from accessing the network device.

[0180] For example, the absence of a first sub-information in SIB1 may indicate that access to a network device by a first type of terminal device having a second capability is prohibited, regardless of whether a second sub-information exists in SIB1.

[0181] In response to this, if a terminal device is a first type of terminal device having a second capability, and the SIB1 received by the terminal device does not contain the first sub-information, the terminal device may be prohibited from accessing the network device, regardless of whether the second sub-information is present in the SIB1.

[0182] For example, the presence of a first sub-information and a second sub-information in SIB1 may indicate that a first type of terminal device having a second capability is permitted to access a network device.

[0183] Correspondingly, if the terminal device is a first type of terminal device having a second capability, and the first sub-information and the second sub-information are present in the SIB1 received by the terminal device, the terminal device can access the network device.

[0184] According to the method described above, different methods are designed for accessing or prohibiting access to a network device for a first type of terminal device having different capabilities, and as a result, the versatility in deciding whether or not to access a network device by the first type of terminal device can be effectively improved.

[0185] Implementation form 3: The first information includes the third sub-information and / or the fourth sub-information, and the terminal device may access the network device or be prohibited from accessing the network device based on the third sub-information and / or the fourth sub-information.

[0186] The third sub-information indicates that access to a network device is prohibited or permitted for a first type of terminal device having a first capability, and the fourth sub-information indicates that access to a network device is prohibited or permitted for a first type of terminal device having a second capability. Here, the first capability is the first capability as defined by the second definition method, and the second capability is the second capability as defined by the second definition method.

[0187] In implementation form 3, the third sub-information may be transported by a fourth instruction field, and the fourth instruction field may be located in system information block 1. The fourth instruction field may be called a cell barredRedCapPR1 field, etc. The specific name of the fourth instruction field is not limited in this application.

[0188] The fourth sub-information may be carried in a fifth instruction field, and the fifth instruction field may be located in system information block 1. The fifth instruction field may be called a cell barredRedCapBW3 / PR3 field, etc. The specific name of the fifth instruction field is not limited in this application.

[0189] In implementation form 3, in one implementation form, the third sub-information may indicate that access to a network device by a first type of terminal device having a first capability is prohibited or permitted based on different values, and the fourth sub-information may indicate that access to a network device by a first type of terminal device having a second capability is prohibited or permitted based on different values.

[0190] For example, the third sub-information may be barred or not barred. When the third sub-information is barred, it indicates that access to the network device of a first type of terminal device having the first capability is prohibited. When the third sub-information is not barred, it indicates that access to the network device of a first type of terminal device having the first capability is permitted.

[0191] Correspondingly, if a terminal device is a first type of terminal device having a first capability, and the third sub-information indicates that the first type of terminal device having the first capability is prohibited from accessing a network device, for example, if the third sub-information is "barred", the terminal device may be prohibited from accessing the network device. If the third sub-information indicates that the first type of terminal device having the first capability is permitted to access a network device, for example, if the third sub-information is "notbarred", the terminal device may be able to access the network device.

[0192] For example, the fourth sub-information may be barred or not barred. When the fourth sub-information is barred, it indicates that access to the network device of the first type of terminal device having the second capability is prohibited. When the fourth sub-information is not barred, it indicates that access to the network device of the first type of terminal device having the second capability is permitted.

[0193] Correspondingly, if the terminal device is a first type of terminal device having a second capability, and the fourth sub-information indicates that access by the first type of terminal device having the second capability is prohibited, for example, if the fourth sub-information is "barred", the terminal device may be prohibited from accessing the network device. If the fourth sub-information indicates that access by the first type of terminal device having the second capability is permitted, for example, if the fourth sub-information is "notbarred", the terminal device may access the network device.

[0194] In implementation form 3, in another implementation form, whether access to a network device by a first type of terminal device having a first capability is prohibited or permitted may be indicated based on whether a third sub-information exists in SIB1, and whether access to a network device by a first type of terminal device having a second capability is prohibited or permitted may be indicated based on whether a fourth sub-information exists in SIB1.

[0195] If the third sub-information is carried by the fourth indicator field, whether the third sub-information is present in SIB1 can also be understood as whether the fourth indicator field is present in SIB1. If the fourth sub-information is carried by the fifth indicator field, whether the fourth sub-information is present in SIB1 can also be understood as whether the fifth indicator field is present in SIB1.

[0196] For example, the absence of a third sub-information in SIB1 may indicate that a first type of terminal device having the first capability is prohibited from accessing a network device. The presence of a third sub-information in SIB1 may indicate that a first type of terminal device having the first capability is permitted to access a network device.

[0197] Accordingly, if the terminal device is a first type of terminal device having the first capability, and the third sub-information is present in the SIB1 received by the terminal device, the terminal device may access the network device; or, if the third sub-information is not present in the SIB1 received by the terminal device, the terminal device may be prohibited from accessing the network device.

[0198] For example, the absence of a fourth sub-information in SIB1 may indicate that a first type of terminal device having second capabilities is prohibited from accessing the network device. The presence of a fourth sub-information in SIB1 may indicate that a first type of terminal device having second capabilities is permitted to access the network device.

[0199] Correspondingly, if the terminal device is a first type of terminal device having the second capability, and the fourth sub-information is present in the SIB1 received by the terminal device, the terminal device may access the network device; or, if the fourth sub-information is not present in the SIB1 received by the terminal device, the terminal device may be prohibited from accessing the network device.

[0200] According to the method described above, different methods are designed for the capabilities of the first type of terminal device to either access a network device or be denied access to a network device, and as a result, the versatility in which the first type of terminal device decides whether or not to access a network device can be effectively improved.

[0201] In a second possible implementation, a terminal device may, based on the first and second pieces of information, either access a network device or be prohibited from accessing a network device.

[0202] In the first implementation, before a terminal device accesses a network device based on the first and second pieces of information, or before it is prohibited from doing so, the terminal device may, as an alternative, access the network device based on the IntraFreqReselection field, or it may be prohibited from accessing the network device. The IntraFreqReselection field, the first piece of information, and the second piece of information may be carried in the same message or in different messages. For example, the network device may carry the IntraFreqReselection field, the first piece of information, and the second piece of information in system information block 1. In this implementation, the terminal device may be a first type terminal device or a second type terminal device.

[0203] In the second implementation, before a terminal device accesses a network device based on the first and second information, or before it is prohibited from accessing the network device, the terminal device may, as an alternative, access the network device based on the first intra-frequency reselection field, or be prohibited from accessing the network device. The first intra-frequency reselection field, the first information, and the second information may be carried in the same message or in different messages. For example, the network device may carry the first intra-frequency reselection field, the first information, and the second information in system information block 1. In this implementation, the terminal device may be a first type terminal device or a second type terminal device.

[0204] In the third implementation, if the terminal device is a terminal device of the first type, before the terminal device of the first type accesses or is prohibited from accessing the network device based on the first and second information, the terminal device may, as an alternative, access the network device based on the first intra-frequency reselection field, or may be prohibited from accessing the network device. The first intra-frequency reselection field, the first information, and the second information may be carried in the same message or in different messages. For example, the network device may carry the first intra-frequency reselection field, the first information, and the second information in system information block 1.

[0205] If the terminal device is a second type of terminal device, before the second type of terminal device accesses or is prohibited from accessing the network device based on the first and second information, the terminal device may, as an alternative, access the network device based on the second intra-frequency reselection field, or be prohibited from accessing the network device. The second intra-frequency reselection field, the first information, and the second information may be carried in the same message or in different messages. For example, the network device may carry the second intra-frequency reselection field, the first information, and the second information in system information block 1.

[0206] For example, when the terminal device is a first type of terminal device, the intra-frequency reselection field and the first intra-frequency reselection field have similar functions. Hereinafter, the intra-frequency reselection field will be used as an example for illustrative purposes. The intra-frequency reselection field may be carried in the system information block 1. If the system information block 1 does not contain the intra-frequency reselection field, it indicates that access by the first type of terminal device is prohibited or permitted. If the terminal device does not receive the frequency reselection field, or if the system information block 1 received by the terminal device does not contain the frequency reselection field, the terminal device may be prohibited from accessing the network device. If the system information block 1 contains the frequency reselection field, the terminal device may access the network device based on the first and second information, or be prohibited from accessing the network device. In this embodiment of the present application, the absence of the frequency reselection field in the system information block 1 may also be understood as the absence of the frequency reselection field in the system information block 1.

[0207] When a terminal device is a second type of terminal device, the functions of the frequency reselection field, the first frequency reselection field, and the second frequency reselection field are the same. A second type of terminal device can access or is prohibited from accessing a network device based on the frequency reselection field, the first frequency reselection field, or the second frequency reselection field. For details, see the description of a first type of terminal device that can access or is prohibited from accessing a network device based on the frequency reselection field or the first frequency reselection field. Details will not be repeated here.

[0208] The second information is carried in at least one of the first field, the second field, and the third field. The second information can be described as being implemented by setting a different value in at least one of the first field, the second field, and the third field. If a first type of terminal device decides, based on the second information, to deny or allow access to a network device, the second information may also indicate that the first type of terminal device is denied or allowed access to the network device.

[0209] The first field may be called the cellBarredRedCap1Rx field. The first field indicates whether access to the network device is prohibited or permitted for a first type of terminal device supporting one antenna and a second type of terminal device supporting one antenna. For example, the information carried in the first field may be barred or notbarred. When the information carried in the first field is barred, it indicates that access to the network device is prohibited for a first type of terminal device supporting one antenna and a second type of terminal device supporting one antenna. When the information carried in the first field is notbarred, it indicates that access to the network device is permitted for a first type of terminal device supporting one antenna and a second type of terminal device supporting one antenna.

[0210] The second field is sometimes called the cellBarredRedCap2Rx field. The second field indicates whether access to the network device is prohibited or permitted for a first type of terminal device that supports two antennas and a second type of terminal device that supports two antennas. For example, the information carried in the second field may be barred or notbarred. When the information carried in the second field is barred, it indicates that access to the network device is prohibited for a first type of terminal device that supports two antennas and a second type of terminal device that supports two antennas. When the information carried in the second field is notbarred, it indicates that access to the network device is permitted for a first type of terminal device that supports two antennas and a second type of terminal device that supports two antennas.

[0211] The third field is sometimes called the halfDuplexRedCapAllowed field. The third field indicates whether access to the network device is prohibited or permitted for first-type terminal devices and second-type terminal devices that support half-duplex frequency division multiplexing. For example, the information carried in the third field may be true. If the third field is not present, it indicates that access to the network device is prohibited for first-type terminal devices and second-type terminal devices that support half-duplex frequency division multiplexing. When the information carried in the third field is true, it indicates that access to the network device is permitted for first-type terminal devices and second-type terminal devices that support half-duplex frequency division multiplexing.

[0212] The above is merely an example, and the specific names of the first field, the second field, and the third field are not limited in this application.

[0213] In possible implementations, if a terminal device is a first type of terminal device that supports one antenna, the terminal device may, based on first information and first fields, either access a network device or be prohibited from accessing a network device.

[0214] For example, the first piece of information indicates that a terminal device of a first type is permitted to access a network device, and the first field indicates that a terminal device of a first type that supports one antenna is permitted to access a network device. Correspondingly, in this case, if the terminal device is a terminal device of a first type that supports one antenna, the terminal device may access the network device.

[0215] For details on how the first information indicates that a terminal device of the first type is permitted to access a network device, or how a terminal device decides to access a network device based on the first information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0216] For example, the first piece of information indicates that a first type of terminal device is prohibited from accessing a network device, and the first field indicates that a first type of terminal device supporting one antenna is prohibited from accessing a network device. Correspondingly, in this case, if the terminal device is a first type of terminal device supporting one antenna, the terminal device may be prohibited from accessing the network device. In this implementation, the terminal device may first parse the first piece of information. If the first piece of information indicates that a first type of terminal device is prohibited from accessing a network device, the terminal device no longer needs to parse the first field. Regardless of whether the first field indicates that access is prohibited or permitted for a first type of terminal device supporting one antenna, the first type of terminal device is prohibited from accessing the network device.

[0217] For details on how the first piece of information indicates that the terminal device is prohibited from accessing the network device, or how the terminal device decides that it is prohibited from accessing the network device based on the first piece of information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0218] For example, the first field indicates that a first type of terminal device supporting one antenna is prohibited from accessing a network device, and the first information indicates that a first type of terminal device is prohibited from accessing a network device. Correspondingly, in this case, if the terminal device is a first type of terminal device supporting one antenna, the terminal device may be prohibited from accessing the network device. In this implementation, the terminal device may first parse the first field. If the first field indicates that a first type of terminal device is prohibited from accessing a network device, the terminal device no longer needs to parse the first information. Regardless of whether the first information indicates that access is prohibited or permitted for a first type of terminal device, the first type of terminal device is prohibited from accessing the network device.

[0219] For details on how the first information indicates whether a terminal device is prohibited or permitted to access a network device, or how a terminal device decides whether to access a network device or be prohibited from accessing a network device based on the first information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0220] In possible implementations, if the terminal device is a first type of terminal device that supports two antennas, the terminal device may, based on the first information and the second field, either access the network device or be prohibited from accessing the network device.

[0221] For example, the first field indicates that a terminal device of a first type is permitted to access a network device, and the second field indicates that a terminal device of a first type that supports two antennas is permitted to access a network device. Correspondingly, in this case, if the terminal device is a terminal device of a first type that supports two antennas, the terminal device may access the network device.

[0222] For example, the first field indicates that a first type of terminal device is prohibited from accessing the network device, and the second field indicates that a first type of terminal device supporting two antennas is prohibited from accessing the network device. Correspondingly, in this case, if the terminal device is a first type of terminal device supporting two antennas, the terminal device may be prohibited from accessing the network device. In this implementation, the terminal device may first parse the first field. If the first field indicates that a first type of terminal device is prohibited from accessing the network device, the terminal device no longer needs to parse the second field.

[0223] For example, the second field indicates that a first type of terminal device supporting two antennas is prohibited from accessing the network device, and the first information indicates that a first type of terminal device is prohibited from accessing the network device. Correspondingly, in this case, if the terminal device is a first type of terminal device supporting two antennas, the terminal device may be prohibited from accessing the network device. In this implementation, the terminal device may parse the second field first. If the second field indicates that a first type of terminal device is prohibited from accessing the network device, the terminal device no longer needs to parse the first information.

[0224] For details on how the first information indicates whether a terminal device is prohibited or permitted to access a network device, or how a terminal device decides whether to access a network device or be prohibited from accessing a network device based on the first information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0225] In possible implementations, if a terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may be able to access a network device or be prohibited from accessing a network device based on first information and a third field.

[0226] For example, the first field indicates that a terminal device of a first type is permitted to access a network device, and the third field indicates that a terminal device of a first type that supports half-duplex frequency division multiplexing is permitted to access a network device. Correspondingly, in this case, if the terminal device is a terminal device of a first type that supports half-duplex frequency division multiplexing, the terminal device may access the network device.

[0227] For example, the first piece of information indicates that a first type of terminal device is prohibited from accessing a network device, and the third field indicates that a first type of terminal device that supports half-duplex frequency division multiplexing is prohibited from accessing a network device. Correspondingly, in this case, if the terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may be prohibited from accessing a network device. In this implementation, the terminal device may first parse the first piece of information. If the first piece of information indicates that a first type of terminal device is prohibited from accessing a network device, the terminal device no longer needs to parse the third field.

[0228] For example, the third field indicates that a first type of terminal device supporting half-duplex frequency division multiplexing is prohibited from accessing the network device, and the first information indicates that a first type of terminal device is prohibited from accessing the network device. Correspondingly, in this case, if the terminal device is a first type of terminal device supporting half-duplex frequency division multiplexing, the terminal device may be prohibited from accessing the network device. In this implementation, the terminal device may first parse the third field. If the third field indicates that a first type of terminal device is prohibited from accessing the network device, the terminal device no longer needs to parse the first information.

[0229] For details on how the first information indicates whether a terminal device is prohibited or permitted to access a network device, or how a terminal device decides whether to access a network device or be prohibited from accessing a network device based on the first information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0230] According to the method described above, only the first information is added to the capabilities and supported communication channels of the first type of terminal device, resulting in different methods being implemented for the first type of terminal device to access or be denied access to the network device, thereby reducing information overhead.

[0231] In a third possible implementation, the terminal device may, based on the second information, either access the network device or be prohibited from accessing the network device.

[0232] In one implementation, before accessing the network device based on the second information, or before being prohibited from accessing it, the terminal device may further access the network device based on the intra-frequency reselection field, the first intra-frequency reselection field, or the second intra-frequency reselection field, or be prohibited from accessing the network device. For details, please refer to the description of the second possible implementation. Details will not be repeated here.

[0233] In one implementation, the terminal device determines that it has not received the first information before deciding whether to access the network device or to be prohibited from accessing the network device based on the second information. For example, the first information is carried in system information block 1. If the first information is not present in system information block 1 received by the terminal device, the terminal device is either allowed to access the network device or prohibited from accessing the network device based on the second information.

[0234] In this application, the second information is conveyed in at least one of the first field, the second field, and the third field.

[0235] In possible implementations, if a terminal device is a first type of terminal device that supports one antenna, the terminal device may, based on a first field, either access a network device or be prohibited from accessing a network device.

[0236] If the terminal device is a first type of terminal device that supports one antenna, and the first field indicates that access is prohibited for the first type of terminal device that supports one antenna, for example, if the first field is prohibited, the terminal device may be prohibited from accessing the network device. If the first field indicates that access is permitted for the first type of terminal device that supports one antenna, for example, if the first field is not prohibited, the terminal device may be able to access the network device.

[0237] In possible implementations, if a terminal device is a first type of terminal device that supports two antennas, the terminal device may, based on a second field, either access a network device or be prohibited from accessing a network device.

[0238] If a terminal device is a first type of terminal device that supports two antennas, and the second field indicates that access for a first type of terminal device that supports two antennas is prohibited, then the terminal device may be prohibited from accessing the network device. If the second field indicates that access for a first type of terminal device that supports two antennas is permitted, then the terminal device may access the network device.

[0239] In possible implementations, if a terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may be able to access a network device or be prohibited from accessing a network device based on a third field.

[0240] If a terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, and the third field indicates that access for the first type of terminal device that supports half-duplex frequency division multiplexing is prohibited, then the terminal device may be prohibited from accessing the network device. If the third field indicates that access for the first type of terminal device that supports half-duplex frequency division multiplexing is permitted, then the terminal device may access the network device.

[0241] It should be understood that the first type of terminal device in the aforementioned implementation may have either the first or second capability. In the aforementioned embodiment, the first type of terminal device may or may not obtain the first information from the network device. Regardless of whether the first type of terminal device obtains the first information from the network device, the first type of terminal device may access the network device based solely on the second information instead of the first information, or may be prohibited from doing so.

[0242] According to the method described above, different methods for a first type of terminal device to access a network device or to be denied access to a network device are designed for the communication channels supported by the first type of terminal device, and as a result, the versatility in which the first type of terminal device decides whether or not to access a network device can be effectively improved.

[0243] In possible implementations, if the terminal device is a second type of terminal device that supports one antenna, the terminal device may, based on the first field, either access the network device or be prohibited from accessing the network device.

[0244] In this embodiment of the present application, a method for a second type of terminal device supporting one antenna that accesses a network device based on a first field or is prohibited from accessing a network device is similar to the method for a first type of terminal device supporting one antenna that accesses a network device based on a first field or is prohibited from accessing a network device. Details are not repeated here.

[0245] In possible implementations, if the terminal device is a second type of terminal device that supports two antennas, the terminal device may, based on the second field, either access the network device or be prohibited from accessing the network device.

[0246] In this embodiment of the present application, a method for a second type of terminal device supporting two antennas that access a network device based on a second field or are prohibited from accessing a network device is similar to a method for a first type of terminal device supporting two antennas that access a network device based on a second field or are prohibited from accessing a network device. Details are not repeated here.

[0247] In possible implementations, if the terminal device is a second type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may be able to access the network device or be prohibited from accessing the network device based on the third field.

[0248] In this embodiment of the present application, a method for a second type of terminal device supporting half-duplex frequency division multiplexing that accesses or is prohibited from accessing a network device based on a third field is similar to a method for a first type of terminal device supporting half-duplex frequency division multiplexing that accesses or is prohibited from accessing a network device based on a third field. Details are not repeated here.

[0249] According to the method described above, different methods for a second type of terminal device to access a network device or to be denied access to a network device are designed for the communication channels supported by the second type of terminal device, and as a result, the versatility in which the second type of terminal device decides whether or not to access a network device can be effectively improved.

[0250] In a fourth possible implementation, the network device may further transmit third information to the terminal device. The third information, the first information, and the second information may be carried in the same message or in different messages. For illustrative purposes, an example is used in which the same message carries the first information, the second information, and the third information. The network device may carry the first information, the second information, and the third information in system information block 1. The third information may indicate that access to at least one network device is prohibited or permitted among a first type of terminal device supporting one antenna, a first type of terminal device supporting two antennas, or a first type of terminal device supporting half-duplex frequency division multiplexing.

[0251] In one implementation, before accessing or being prohibited from accessing a network device based on the first and third pieces of information, the terminal device may further access the network device or be prohibited from accessing the network device based on the intra-frequency reselection field, the first intra-frequency reselection field, or the second intra-frequency reselection field. For details, see the description of the second possible implementation. Details will not be repeated here.

[0252] In one implementation, the third information can be carried by at least one of the fourth, fifth, and sixth fields. This can be explained as follows: The third information is implemented by setting a different value in at least one of the fourth, fifth, and sixth fields. The fourth, fifth, and sixth fields are all located within system information block 1.

[0253] The fourth field is sometimes called the cellBarredRedCap1Rx-r18 field. The fourth field indicates whether access to the network device is prohibited or permitted for a first type terminal device supporting one antenna. For example, the information carried in the fourth field may be barred or notbarred. When the information carried in the fourth field is barred, it indicates that access to the network device is prohibited for a first type terminal device supporting one antenna. When the information carried in the fourth field is notbarred, it indicates that access to the network device is permitted for a first type terminal device supporting one antenna.

[0254] The fifth field may be called the cellBarredRedCap2Rx-r18 field. The fifth field indicates whether access to the network device is prohibited or permitted for a first type terminal device that supports two antennas. For example, the information carried in the fifth field may be barred or notbarred. When the information carried in the fifth field is barred, it indicates that access to the network device is prohibited for a first type terminal device that supports two antennas. When the information carried in the fifth field is notbarred, it indicates that access to the network device is permitted for a first type terminal device that supports two antennas.

[0255] The sixth field is sometimes called the halfDuplexRedCapAllowed-r18 field. The sixth field indicates whether access to the network device of a first type terminal device that supports half-duplex frequency division multiplexing is prohibited or permitted. For example, the information carried in the sixth field may be true. If the sixth field is not present, it indicates that access to the network device of a first type terminal device that supports half-duplex frequency division multiplexing is prohibited. When the information carried in the sixth field is true, it indicates that access to the network device of a first type terminal device that supports half-duplex frequency division multiplexing is permitted.

[0256] The above are merely examples, and the specific names of the fourth, fifth, and sixth fields are not limited in this application.

[0257] In possible implementations, if the terminal device is a first type of terminal device that supports one antenna, the terminal device may, based on the first information and the fourth field, either access the network device or be prohibited from accessing the network device.

[0258] For example, a terminal device may access a network device if the first information indicates that a terminal device of a first type is permitted to access a network device, and the fourth field indicates that a terminal device of a first type that supports one antenna is permitted to access a network device.

[0259] For example, the first field indicates that a terminal device of a first type is prohibited from accessing a network device, or the fourth field indicates that a terminal device of a first type that supports one antenna is prohibited from accessing a network device. If a terminal device is a terminal device of a first type that supports one antenna, the terminal device may be prohibited from accessing a network device.

[0260] In this embodiment of the present application, a method for a first type of terminal device supporting one antenna, which accesses or is prohibited from accessing a network device based on first information and a fourth field, is similar to the method for a first type of terminal device supporting one antenna, which accesses or is prohibited from accessing a network device based on first information and a first field. For further details, please refer to the description of the second possible implementation. Details will not be repeated here.

[0261] In possible implementations, if the terminal device is a first type of terminal device that supports two antennas, the terminal device may, based on the first information and the fifth field, either access the network device or be prohibited from accessing the network device.

[0262] For example, a terminal device may access a network device when the first piece of information indicates that a terminal device of a first type is permitted to access a network device, and the fifth field indicates that a terminal device of a first type that supports two antennas is permitted to access a network device.

[0263] For example, the first field indicates that a terminal device of a first type is prohibited from accessing a network device, or the fourth field indicates that a terminal device of a first type that supports two antennas is prohibited from accessing a network device. If a terminal device is a terminal device of a first type that supports two antennas, the terminal device may be prohibited from accessing a network device.

[0264] In this embodiment of the present application, a method for a first type of terminal device supporting two antennas that access a network device based on a first piece of information and a fifth field, or are prohibited from accessing a network device, is similar to a method for a first type of terminal device supporting two antennas that access a network device based on a first piece of information and a second field, or are prohibited from accessing a network device. For further details, please refer to the description of the second possible implementation. Details will not be repeated here.

[0265] In possible implementations, if the terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may, based on the first information and the sixth field, either access the network device or be prohibited from accessing the network device.

[0266] For example, a terminal device may access a network device when the first information indicates that a first type of terminal device is permitted to access a network device, and the fifth field indicates that a first type of terminal device that supports half-duplex frequency division multiplexing is permitted to access a network device.

[0267] For example, the first field indicates that a first type of terminal device is prohibited from accessing a network device, or the fourth field indicates that a first type of terminal device that supports half-duplex frequency division multiplexing is prohibited from accessing a network device. If a terminal device is a first type of terminal device that supports half-duplex frequency division multiplexing, the terminal device may be prohibited from accessing a network device.

[0268] In this embodiment of the present application, a method for a first type of terminal device supporting half-duplex frequency division multiplexing that accesses a network device based on first information and a sixth field, or is prohibited from accessing a network device, is similar to a method for a first type of terminal device supporting half-duplex frequency division multiplexing that accesses a network device based on first information and a sixth field, or is prohibited from accessing a network device. Details are not repeated here.

[0269] It should be understood that the sequence of actions taken by the terminal device to analyze the first and third information when the terminal device accesses or is prohibited from accessing the network device based on the first and third information is not limited herein.

[0270] For details on how the first information indicates whether a terminal device is prohibited or permitted to access a network device, or how a terminal device decides whether to access a network device or be prohibited from accessing a network device based on the first information, please refer to the description of one of the implementations 1 through 3 of the first possible implementation. Details will not be repeated here.

[0271] According to the method described above, different methods are designed for the first type of terminal device to access or be denied access to a network device, and for the supported communication channels, resulting in improved versatility for the first type of terminal device to access or be denied access to a network device.

[0272] In this application, after deciding to access a network device, the terminal device may further transmit capability information to the network device. See the description below for details.

[0273] Figure 3 is a schematic flowchart of an access method according to one embodiment of this application.

[0274] In one possible implementation, the method may further include S301 before the terminal device transmits the first or second capability information to the network device.

[0275] Optionally, S301: The network device transmits either the first instruction information or the second instruction information.

[0276] In response, the terminal device receives either the first instruction information or the second instruction information from the network device.

[0277] The first instruction indicates that the terminal device will report the first capability information, and the second instruction indicates that the terminal device will report the second capability information.

[0278] In another possible implementation, the terminal device proactively transmits either the first or second capability information to the network device, without considering whether the terminal device receives either the first or second instruction information from the network device.

[0279] S302: The terminal device transmits either first capability information or second capability information to the network device. The first capability information indicates that the terminal device has a first capability, and the second capability information indicates that the terminal device has a second capability.

[0280] In response, the network device receives either first capability information or second capability information from the terminal device.

[0281] The first or second capability information may be indicated by any one of the following messages: message 1 (message1, Msg1) in a random access process, message A (message A, MsgA) in a random access process, message 3 (message3, Msg3) in a random access process, and radio resource control (RRC) signaling. The random access type corresponding to messages 1 and 3 is 4-step random access, and the random access type corresponding to message A is 2-step random access.

[0282] In this embodiment of the present application, when the first capability information or the second capability information is indicated by message 3, there is a correspondence between the capabilities of the terminal device and the logical channel identifier (LCID). Specifically, the first capability corresponds to the first logical channel identifier, and the second capability corresponds to the second logical channel identifier. The correspondence is predefined, preconfigured, or configured by the network device. The first logical channel identifier is different from the second logical channel identifier.

[0283] For example, the first capability information may be the first logical channel identifier corresponding to the first capability, and the second capability information may be the second logical channel identifier corresponding to the second capability. The value of the first logical channel identifier may be one of 37 to 42, and the value of the second logical channel identifier may be one of 37 to 42.

[0284] When a terminal device possesses a first capability, the first capability information contained in message 3 sent by the terminal device is a first logical channel identifier. Upon receiving message 3 containing the first logical channel identifier, the network device determines that the terminal device is a first type of terminal device possessing the first capability.

[0285] When a terminal device possesses the second capability, the second capability information contained in message 3 sent by the terminal device is the second logical channel identifier. Upon receiving message 3 containing the second logical channel identifier, the network device determines that the terminal device is a first type of terminal device possessing the second capability.

[0286] For example, the value of the first logical channel identifier is 37, and the value of the second logical channel identifier is 38.

[0287] When the capability of a terminal device is the first capability, the logical channel identifier included in message 3 sent by the terminal device is 37. Upon receiving message 3 containing the logical channel identifier 37, the network device determines that the terminal device is a first type of terminal device having the first capability.

[0288] When the terminal device has the second capability, the logical channel identifier included in message 3 sent by the terminal device is 38. Upon receiving message 3 containing the logical channel identifier 38, the network device determines that the terminal device is a first type terminal device having the second capability.

[0289] In this embodiment of the present application, message 3 may further indicate whether the terminal device is a first type of terminal device. For example, there is a correspondence between a first type of terminal device and a third logical channel identifier. The correspondence is predefined, preconfigured, or configured by the network device. For example, the value of the third logical channel identifier may be any of 37 to 42.

[0290] When a terminal device is a terminal device of the first type, message 3 transmitted by the terminal device includes a third logical channel identifier. Upon receiving message 3 containing the third logical channel identifier, the network device determines that the terminal device is a terminal device of the first type.

[0291] In this embodiment of the present application, when first capability information or second capability information is indicated by message 1 or message A, there is a correspondence between the capabilities of the terminal device and the transmission resources of message 1 or message A. In other words, the first capability corresponds to the first transmission resource, and the second capability corresponds to the second transmission resource. The correspondence is predefined, preconfigured, or configured by the network device.

[0292] The transmission resource includes one or more of the following, namely, the physical random access channel (PRACH) time domain resource, the PRACH frequency domain resource, the PRACH code domain resource, the PRACH transmission opportunity, and the preamble sequence.

[0293] When the capability of the terminal device is the first capability, the fact that the terminal device has the first capability is indicated by using the first transmission resource. The first transmission resource may be an existing transmission resource for Message 1 or Message A.

[0294] When the capability of the terminal device is the second capability, the fact that the terminal device has the second capability is indicated by using the second transmission resource. The second transmission resource may be a newly defined transmission resource used to transmit Message 1 or Message A.

[0295] For example, when the transmission resource is a preamble sequence, currently, preamble sequences 1 to 64 are defined as transmission resources, and the first transmission resource is an existing transmission resource for Message 1 or Message A. Therefore, the first transmission resource includes preamble sequences 1 to 64. The second transmission resource is a newly defined transmission resource used to transmit Message 1 or Message A. Therefore, the second transmission resource may include preamble sequences 65 to 128.

[0296] The first capability information is the preamble sequence transmitted by the terminal device. Message 1 or Message A transmitted by the terminal device includes one of preamble sequences 1 to 64, indicating that the capability of the terminal device is the first capability.

[0297] The second capability information may also be a preamble sequence transmitted by the terminal device. Message 1 or Message A transmitted by the terminal device includes one of preamble sequences 65 to 128, indicating that the terminal device's capability is the second capability.

[0298] It should be understood that the correspondence between the capabilities of a terminal device and the transmission resources for message 1 or message A may be predefined or preconfigured, or may be configured by the network device.

[0299] In the method described above, the type or capabilities of the terminal device are indicated in advance during the initial access process, and as a result, the network device can schedule resources that match the type or capabilities of the terminal device based on the terminal device type or capabilities, thereby improving resource utilization and system efficiency.

[0300] The methods and procedures described above may be carried out independently or in combination. This is not limited to the present application.

[0301] In the embodiments provided in this application, the methods provided in the embodiments are described in terms of device-to-device interaction. To perform the functions in the methods provided in the embodiments, a network device or terminal device includes a hardware structure and / or software modules, which may perform the functions in the form of a hardware structure, software modules, or a combination of hardware structures and software modules. Whether one of the aforementioned functions is performed using a hardware structure, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0302] In this embodiment of the present application, module partitioning is illustrative and merely represents logical function partitioning. In actual implementations, other partitioning methods may be used. In addition, the functional modules in the embodiments of the present application may be integrated into a single processor, exist physically independently, or two or more modules may be integrated into a single module. The integrated module may be implemented in hardware form or in the form of a software functional module.

[0303] Similar to the concept described above, as shown in Figure 4, one embodiment of the present application further provides a communication device 400 configured to perform the functions of a network device or terminal device in the method described above. For example, the device may be a software module or a chip system. In this embodiment of the present application, the chip system may include a chip or include a chip and other discrete components. The communication device 400 may include a processing unit 401 and a communication unit 402.

[0304] In embodiments of this application, the processing unit may also be referred to as a processor, processing board, processing module, or processing device. The communication unit may also be referred to as a transceiver, transceiver machine, transceiver device, or transceiver unit. The transceiver unit may include a transmit unit and / or receive unit configured to perform the transmit and receive steps of a network device or terminal device in the embodiments of the method described above.

[0305] The communication device provided in this embodiment of the present application is described below with reference to Figures 4 and 5. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for details not described in detail, please refer to the method embodiment described above. For brevity, details will not be described again here.

[0306] In one implementation configuration, the communication device 400 can perform the following functions:

[0307] The communication unit is configured to receive first information. The first information indicates that access to a first type of terminal device is prohibited or permitted, that the baseband processing bandwidth of a first type of terminal device is less than the maximum transmission bandwidth, that the peak data transmission rate of a first type of terminal device is less than the peak data transmission rate of a second type of terminal device, that the baseband processing bandwidth of a second type of terminal device is equal to the maximum transmission bandwidth, or that a first type of terminal device satisfies a first condition.

[0308] The processing unit is configured to either access the network device or to prohibit access to the network device based on the first piece of information.

[0309] In one implementation configuration, the communication device 400 can perform the following functions:

[0310] The processing unit is configured to generate first information. The first information indicates that access to a first type of terminal device is prohibited or permitted, that the baseband processing bandwidth of a first type of terminal device is less than the maximum transmission bandwidth, that the peak data transmission rate of a first type of terminal device is less than the peak data transmission rate of a second type of terminal device, that the baseband processing bandwidth of a second type of terminal device is equal to the maximum transmission bandwidth, or that a first type of terminal device satisfies a first condition.

[0311] The communication unit is configured to transmit the first piece of information.

[0312] The above is merely an example. The processing unit 401 and the communication unit 402 may perform other functions. For a more detailed explanation, please refer to the relevant descriptions in the embodiments of the method described above. Details will not be repeated here.

[0313] FIG. 5 shows a communication device 500 according to an embodiment of the present application. The device shown in FIG. 5 may be an implementation form of the hardware circuit of the device shown in FIG. 4. The communication device is applicable to the foregoing flowchart and executes the functions of the network device or the terminal device in the embodiment of the foregoing method. For ease of explanation, FIG. 5 shows only the main components of the communication device.

[0314] As shown in FIG. 5, the communication device 500 includes a processor 510 and an interface circuit 520. The processor 510 and the interface circuit 520 are coupled to each other. It can be understood that the interface circuit 520 may be a transceiver or an input / output interface.

[0315] Optionally, in one implementation form, the communication device 500 may further include a memory 530 configured to store instructions executed by the processor 510, store input data required for the processor 510 to execute the instructions, or store data generated after the processor 510 executes the instructions.

[0316] When the communication device 500 is configured to implement the foregoing method, the processor 510 is configured to implement the functions of the processing unit 401, and the interface circuit 520 is configured to implement the functions of the communication unit <

[0317] ​It should be understood that the processor referred to in the embodiments of this application may be a Central Processing Unit (CPU), or another general-purpose processor, Digital Signal Processor (DSP), Application-Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), or another programmable logic device, transistor logic device, hardware component, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0318] The memory in the embodiments of this application may be random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically Erasable EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs, or any other form of storage medium known in the art. For example, the storage medium is coupled to a processor so that the processor can read information from or write information to the storage medium. Naturally, the storage medium may also be a component of the processor. The processor and the storage medium may be arranged in an ASIC.

[0319] Those skilled in the art will understand that embodiments of this application may be provided as methods, systems, or computer program products. Accordingly, this application may use embodiments that are hardware-only, software-only, or a combination of software and hardware. Furthermore, this application may use the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk memory, optical memory, etc.) containing computer-usable program code.

[0320] This application is described with reference to flowcharts and / or block diagrams of the methods, devices (systems), and computer program products described herein. It should be understood that computer program instructions may be used to implement each step and / or block in the flowcharts and / or block diagrams, as well as combinations of steps and / or blocks in the flowcharts and / or block diagrams. Computer program instructions may be provided by a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device to create a machine such that instructions executed by the processor of a computer or another programmable data processing device create a machine for implementing one or more steps in a flowchart and / or one or more blocks in a block diagram.

[0321] Computer program instructions can be stored in computer-readable memory that can instruct a computer or another programmable data processing device to operate in a specific manner. As a result, instructions stored in computer-readable memory generate artifacts, including instruction units. Instruction units implement one or more steps in a flowchart and / or one or more blocks in a block diagram.

[0322] It will be apparent to those skilled in the art that various modifications and variations can be made to this application without departing from its scope. This application is intended to encompass these modifications and variations, provided that they fall within the scope of protection defined by the following claims and their equivalents. [Explanation of Symbols]

[0323] 400 Communication devices 401 Processing Unit 402 Communication Unit 500 Communication devices 510 Processor 520 Interface Circuit 530 memory

Claims

1. Access method, A step of receiving first information, wherein the first information indicates that access to a first type of terminal device is prohibited or permitted, and the first type of terminal device satisfies a first condition, A step in which access to a network device is taken based on the information described in the first step, or access to a network device is prohibited. Methods that include...

2. The method described above is Steps include receiving second information, wherein the second information indicates that access to the network device by the second type of terminal device is prohibited or permitted, and the second type of terminal device satisfies the second condition. It further includes, The step of accessing the network device based on the first information, or being prohibited from accessing the network device, A step of accessing the network device based on the first and second pieces of information, or being prohibited from accessing the network device. including, The method according to claim 1.

3. The first information is included in the system information block 1, or The first information and the second information are included in the system information block 1. The method according to claim 1 or 2.

4. The method described above is System information block 1 includes a first intra-frequency reselection field, the first intra-frequency reselection field indicating whether the access of the first type of terminal device and the second type of terminal device to the network device is prohibited or permitted, or System information block 1 includes a first intra-frequency reselection field and a second intra-frequency reselection field, wherein the first intra-frequency reselection field indicates that the access of the first type of terminal device to the network device is prohibited or permitted, and the second intra-frequency reselection field indicates that the access of the second type of terminal device to the network device is prohibited or permitted. It further includes, Access to the current network, or being prohibited from accessing the current network, is determined based on the first intra-frequency reselection field contained in the system information block 1. The method according to claim 3.

5. The second information is transported in at least one of the first field, the second field, and the third field. The first field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting one antenna; the second field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting two antennas; and the third field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting half-duplex frequency division multiplexing. The method according to any one of claims 2 to 4.

6. The step of accessing the network device or being prohibited from accessing the network device based on the first and second information is: When the terminal device is the first type of terminal device that supports one antenna, the steps of accessing the network device based on the first information and the first field, or being prohibited from accessing the network device, When the terminal device is the first type of terminal device that supports two antennas, the steps of accessing the network device based on the first information and the second field, or being prohibited from accessing the network device, When the terminal device is the first type of terminal device that supports half-duplex frequency division multiplexing, the step of accessing the network device or being prohibited from accessing the network device is based on the first information and the third field. The method according to claim 5, including the method described in claim 5.

7. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes first sub-information and second sub-information, wherein the first sub-information indicates that access to the first type of terminal device having the first capability is prohibited or permitted, and the first sub-information and the second sub-information indicate that access to the first type of terminal device having the second capability is prohibited or permitted. The method according to any one of claims 1 to 6.

8. The step of accessing the network device based on the first information, or being prohibited from accessing the network device, When the terminal device is a terminal device of the first type having the first capability, and the first sub-information indicates that the access of the terminal device of the first type is permitted, the step of accessing the network device, or When the terminal device is a terminal device of the first type having the first capability, and the first sub-information indicates that the access of the terminal device of the first type is prohibited, the step of being prohibited from accessing the network device, or When the terminal device is the first type of terminal device having the second capability, the first sub-information indicates that the first type of terminal device is permitted to access, and the second sub-information indicates that the first type of terminal device having the second capability is permitted to access, the step of accessing the network device, or The step of being prohibited from accessing the network device when the terminal device is the first type of terminal device having the second capability, and the first sub-information indicates that the access of the first type of terminal device is prohibited, or the second sub-information indicates that the access of the first type of terminal device having the second capability is prohibited. The method according to claim 7, including the method described in claim 7.

9. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to the first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to the first type of terminal device having the second capability is prohibited or permitted. The method according to any one of claims 1 to 6.

10. The step of accessing the network device based on the first information, or being prohibited from accessing the network device, When the terminal device is a terminal device of the first type having the first capability, and the third sub-information indicates that the access of the terminal device of the first type having the first capability is permitted, the step of accessing the network device, or When the terminal device is the first type of terminal device having the second capability, and the fourth sub-information indicates that the first type of terminal device having the second capability is permitted to access the network device, the step of accessing the network device, or When the terminal device is a first type of terminal device having the first capability, and the third sub-information indicates that the access of the first type of terminal device having the first capability is prohibited, the step of prohibiting access to the network device is, The step of prohibiting access to the network device when the terminal device is the first type of terminal device having the second capability, and the fourth sub-information indicates that access by the first type of terminal device having the second capability is prohibited. The method according to claim 9, including the method described in claim 9.

11. The method described above is A step of transmitting first capability information or second capability information to the network device, wherein the first capability information indicates the first capability, and the second capability information indicates the second capability. The method according to any one of claims 1 to 10, further comprising:

12. The first capability information or the second capability information corresponds to the following message, namely, Message 1 in the random access process, Message A in the random access process, Message 3 in the random access process, and wireless resource control RRC signaling The method according to claim 11, as shown by any one of the following.

13. The method according to claim 11 or 12, wherein the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

14. The value of the aforementioned first logical channel identifier is one of 37 to 42, The value of the aforementioned second logical channel identifier is one of 37 to 42, and the aforementioned first logical channel identifier is different from the aforementioned second logical channel identifier. The method according to claim 13.

15. The method described above is A step of receiving first instruction information or second instruction information from the network device, wherein the first instruction information indicates reporting the first capability information, and the second instruction information indicates reporting the second capability information. The method according to any one of claims 11 to 14, further comprising:

16. Access method, A step of generating first information, wherein the first information indicates that access to a first type of terminal device is prohibited or permitted, and the first type of terminal device satisfies a first condition, The steps of transmitting the first information and Methods that include...

17. The method described above is A step of transmitting second information, wherein the second information indicates that access to the network device of the second type of terminal device is prohibited or permitted, and the second type of terminal device satisfies the second condition. The method according to claim 16, further comprising:

18. The first information is included in the system information block 1, or The first information and the second information are included in the system information block 1. The method according to claim 16 or 17.

19. The method described above is If the access of the first type of terminal device is permitted, the system information block 1 includes a first intra-frequency reselection field, the first intra-frequency reselection field indicating whether the access of the first type of terminal device and the second type of terminal device to the network device is prohibited or permitted, or System information block 1 includes a first intra-frequency reselection field and a second intra-frequency reselection field, wherein the first intra-frequency reselection field indicates that access to the network device of the first type of terminal device is prohibited or permitted, and the second intra-frequency reselection field indicates that access to the network device of the second type of terminal device is prohibited or permitted. The method according to claim 18, further comprising:

20. The second information is transported in at least one of the first field, the second field, and the third field. The first field indicates that access to the first type of terminal device and the second type of terminal device, each supporting one antenna, is prohibited or permitted; the second field indicates that access to the first type of terminal device and the second type of terminal device, each supporting two antennas, is prohibited or permitted; and the third field indicates that access to the first type of terminal device and the second type of terminal device, each supporting half-duplex frequency division multiplexing, is prohibited or permitted. The method according to any one of claims 17 to 19.

21. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes first sub-information and second sub-information, wherein the first sub-information indicates that access to the first type of terminal device having the first capability is prohibited or permitted, and the first sub-information and the second sub-information indicate that access to the first type of terminal device having the second capability is prohibited or permitted. The method according to any one of claims 16 to 20.

22. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to the first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to the first type of terminal device having the second capability is prohibited or permitted. The method according to any one of claims 16 to 20.

23. The method described above is A step of receiving the first capability information or the second capability information from the terminal device, wherein the first capability information indicates the first capability, and the first capability information indicates the second capability. The method according to any one of claims 16 to 22, further comprising:

24. The first capability information or the second capability information corresponds to the following message, namely, Message 1 in the random access process, Message A in the random access process, Message 3 in the random access process, and wireless resource control RRC signaling The method according to claim 23, as shown by any one of the following.

25. The method according to claim 23 or 24, wherein the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

26. The value of the aforementioned first logical channel identifier is one of 37 to 42, The value of the aforementioned second logical channel identifier is one of 37 to 42, and the aforementioned first logical channel identifier is different from the aforementioned second logical channel identifier. The method according to claim 25.

27. The method described above is A step of transmitting first instruction information or second instruction information, wherein the first instruction information indicates reporting the first capability information, and the second instruction information indicates reporting the second capability information. The method according to any one of claims 23 to 26, further comprising:

28. A communication device, A communication unit configured to receive first information, wherein the first information indicates that access by a first type of terminal device is prohibited or permitted, and the first type of terminal device satisfies first conditions, and the communication unit and A processing unit configured to access a network device or to be prohibited from accessing a network device based on the first information, A communication device equipped with the following features.

29. The aforementioned communication unit The second information is received, and the second information indicates that access to the network device by the second type of terminal device is prohibited or permitted, and the second type of terminal device satisfies the second condition. It is further configured in this way, The aforementioned processing unit Access to the network device based on the first and second pieces of information, or be prohibited from accessing the network device. It is specifically configured in such a way. The apparatus according to claim 28.

30. The first information is included in the system information block 1, or The first information and the second information are included in the system information block 1. The apparatus according to claim 28 or 29.

31. System information block 1 includes a first intra-frequency reselection field, the first intra-frequency reselection field indicating whether the access of the first type of terminal device and the second type of terminal device to the network device is prohibited or permitted, System information block 1 includes a first intra-frequency reselection field and a second intra-frequency reselection field, wherein the first intra-frequency reselection field indicates that the access of the first type of terminal device to the network device is prohibited or permitted, and the second intra-frequency reselection field indicates that the access of the second type of terminal device to the network device is prohibited or permitted. The processing unit is further configured to determine, based on the first intra-frequency reselection field included in the system information block 1, whether to access the current network or to be prohibited from accessing the current network. The apparatus according to claim 30.

32. The second information is transported in at least one of the first field, the second field, and the third field. The first field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting one antenna; the second field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting two antennas; and the third field indicates that access to the network device is prohibited or permitted for the first type of terminal device and the second type of terminal device, each supporting half-duplex frequency division multiplexing. The apparatus according to any one of claims 29 to 31.

33. Accessing the network device based on the first and second pieces of information, or being prohibited from accessing the network device, When the communication device is the first type of terminal device supporting one antenna, access to the network device based on the first information and the first field, or being prohibited from accessing the network device, When the communication device is the first type of terminal device that supports two antennas, it may access the network device based on the first information and the second field, or be prohibited from accessing the network device, or When the communication device is the first type of terminal device that supports half-duplex frequency division multiplexing, access to the network device or prohibition of access to the network device is based on the first information and the third field. The apparatus according to claim 32, including the apparatus described in claim 32.

34. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes first sub-information and second sub-information, wherein the first sub-information indicates that access to the first type of terminal device having the first capability is prohibited or permitted, and the first sub-information and the second sub-information indicate that access to the first type of terminal device having the second capability is prohibited or permitted. The apparatus according to any one of claims 28 to 33.

35. The aforementioned processing unit When the communication device is a terminal device of the first type having the first capability, and the first sub-information indicates that the access of the terminal device of the first type is permitted, access to the network device, or When the communication device is a terminal device of the first type having the first capability, and the first sub-information indicates that the access of the terminal device of the first type is prohibited, access to the network device is prohibited, or When the communication device is the first type of terminal device having the second capability, and the first sub-information indicates that the access of the first type of terminal device is permitted, and the second sub-information indicates that the access of the first type of terminal device having the second capability is permitted, access to the network device, or Access to the network device is prohibited when the communication device is a terminal device of the first type having the second capability, and the first sub-information indicates that access to the terminal device of the first type is prohibited, or the second sub-information indicates that access to the terminal device of the first type having the second capability is prohibited. The apparatus according to claim 34, further configured as follows.

36. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to the first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to the first type of terminal device having the second capability is prohibited or permitted. The apparatus according to any one of claims 28 to 32.

37. The aforementioned processing unit When the communication device is a terminal device of the first type having the first capability, and the third sub-information indicates that the access of the terminal device of the first type having the first capability is permitted, access to the network device, or When the communication device is the first type of terminal device having the second capability, and the fourth sub-information indicates that the first type of terminal device having the second capability is permitted to access the network device, When the communication device is a terminal device of the first type having the first capability, and the third sub-information indicates that the access of the terminal device of the first type having the first capability is prohibited, access to the network device is prohibited, or When the communication device is the first type of terminal device having the second capability, and the fourth sub-information indicates that the access of the first type of terminal device having the second capability is prohibited, access to the network device is prohibited. The apparatus according to claim 36, further configured as follows.

38. The aforementioned communication unit The first capability information or the second capability information is transmitted to the network device, the first capability information indicates the first capability, and the second capability information indicates the second capability. The apparatus according to any one of claims 28 to 37, further configured as follows.

39. The first capability information or the second capability information corresponds to the following message, namely, Message 1 in the random access process, Message A in the random access process, Message 3 in the random access process, and wireless resource control RRC signaling The apparatus according to claim 38, as indicated by any one of the following.

40. The apparatus according to claim 38 or 39, wherein the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

41. The value of the aforementioned first logical channel identifier is one of 37 to 42, The value of the aforementioned second logical channel identifier is one of 37 to 42, and the aforementioned first logical channel identifier is different from the aforementioned second logical channel identifier. The apparatus according to claim 40.

42. The aforementioned communication unit The network device receives either a first instruction or a second instruction, the first instruction indicating that the first capability information should be reported, and the second instruction indicating that the second capability information should be reported. The apparatus according to any one of claims 38 to 41, further configured as follows.

43. A communication device, A processing unit configured to generate first information, wherein the first information indicates that access to a first type of terminal device is prohibited or permitted, and the first type of terminal device satisfies first conditions, and the processing unit A communication unit configured to transmit the information described above and A communication device equipped with the following features.

44. The aforementioned communication unit A second piece of information is transmitted, the second piece of information indicating that access to the network device of the second type of terminal device is prohibited or permitted, and the second type of terminal device satisfies the second condition. The apparatus according to claim 43, further configured as follows.

45. The first information is included in the system information block 1, or The first information and the second information are included in the system information block 1. The apparatus according to claim 43 or 44.

46. If the access of the first type of terminal device is permitted, the system information block 1 includes a first intra-frequency reselection field, the first intra-frequency reselection field indicating whether the access of the first type of terminal device and the second type of terminal device to the network device is prohibited or permitted, System information block 1 includes a first intra-frequency reselection field and a second intra-frequency reselection field, wherein the first intra-frequency reselection field indicates that access to the network device of the first type of terminal device is prohibited or permitted, and the second intra-frequency reselection field indicates that access to the network device of the second type of terminal device is prohibited or permitted. The apparatus according to claim 45.

47. The second information is transported in at least one of the first field, the second field, and the third field. The first field indicates that access to the first type of terminal device and the second type of terminal device, each supporting one antenna, is prohibited or permitted; the second field indicates that access to the first type of terminal device and the second type of terminal device, each supporting two antennas, is prohibited or permitted; and the third field indicates that access to the first type of terminal device and the second type of terminal device, each supporting half-duplex frequency division multiplexing, is prohibited or permitted. The apparatus according to any one of claims 43 to 46.

48. The capabilities of the first type of terminal device include the first capability or the second capability, The first information includes first sub-information and second sub-information, wherein the first sub-information indicates that access to the first type of terminal device having the first capability is prohibited or permitted, and the first sub-information and the second sub-information indicate that access to the first type of terminal device having the second capability is prohibited or permitted. The apparatus according to any one of claims 43 to 47.

49. The capability of the first type of terminal device includes the first capability or the second capability, The first information includes a third sub-information and a fourth sub-information, the third sub-information indicating that access to the first type of terminal device having the first capability is prohibited or permitted, and the fourth sub-information indicating that access to the first type of terminal device having the second capability is prohibited or permitted. The apparatus according to any one of claims 43 to 48.

50. The aforementioned communication unit The terminal device receives either the first capability information or the second capability information, the first capability information indicates the first capability, and the first capability information indicates the second capability. The apparatus according to any one of claims 43 to 49, further configured as follows.

51. The first capability information or the second capability information corresponds to the following message, namely, Message 1 in the random access process, Message A in the random access process, Message 3 in the random access process, and wireless resource control RRC signaling The apparatus according to claim 50, as indicated by any one of the following.

52. The apparatus according to claim 50 or 51, wherein the first capability information is a first logical channel identifier corresponding to the first capability, and the second capability information is a second logical channel identifier corresponding to the second capability.

53. The value of the aforementioned first logical channel identifier is one of 37 to 42, The value of the aforementioned second logical channel identifier is one of 37 to 42, and the aforementioned first logical channel identifier is different from the aforementioned second logical channel identifier. The apparatus according to claim 52.

54. The aforementioned communication unit Transmit either a first instruction or a second instruction, wherein the first instruction indicates reporting the first capability information, and the second instruction indicates reporting the second capability information. The apparatus according to any one of claims 50 to 53, further configured as follows.

55. A communication device comprising a processor and an interface circuit, wherein the interface circuit is configured to receive a signal from another communication device and transmit the signal to the processor, or transmit a signal from the processor to another communication device, and the processor is configured to carry out the method according to any one of claims 1 to 27 by using logic circuits or by executing code instructions.

56. A computer program product comprising an instruction, wherein when the instruction is executed, the method according to any one of claims 1 to 27 is performed.

57. A chip comprising a processor, wherein the processor is coupled to a memory and configured to execute a computer program or instructions stored in the memory in order to enable the chip to carry out the method according to any one of claims 1 to 27.

58. A computer-readable storage medium, wherein the storage medium stores a computer program or instruction, and when the computer program or instruction is executed by a communication device, the method according to any one of claims 1 to 27 is performed.

Images