Method and device for accessing network equipment

Abstract

Disclosed are a method and apparatus for accessing a network device, which relate to the field of wireless communications, and can control the number of reduced-capability REDCAP terminals for accessing the network device, and improve the network transmission performance. The method comprises the following steps: the terminal device receives first information which is from network equipment and is used for indicating whether to allow the REDCAP terminal to access the network equipment, and determines whether to access the network equipment according to the first information. Wherein the REDCAP terminals comprise a first type of REDCAP terminals and a second type of REDCAP terminals, the working frequency domain ranges of the first type of REDCAP terminals and the second type of REDCAP terminals are the same, the bandwidth of the second type of REDCAP terminals is smaller than that of the first type of REDCAP terminals, and / or the number of receiving antennas of the second type of REDCAP terminals is smaller than that of the first type of REDCAP terminals.

Description

[0001] This application is a divisional application. The application number of the original application is 202011032886.X, and the original application date is September 27, 2020. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of wireless communications, and in particular to a method and apparatus for accessing a network device. Background Art

[0003] In the new radio (NR) system, network equipment (e.g., base stations) broadcasts a synchronization signal / physical broadcast channel block (SSB). If a terminal device wants to access the network to obtain wireless communication services, the terminal device will receive the SSB and obtain system information based on the SSB. The system information will indicate whether the terminal device is allowed to access the network. If the system information indicates that the terminal device is allowed to access the network, the terminal device will subsequently access the network through a random access process. If the system information indicates that the terminal device is prohibited from accessing the network, the terminal device cannot access the network.

[0004] At present, in the NR system, a new type of terminal device is being considered for introduction - reduced capability (REDCAP) terminal. Compared with ordinary terminals that indicate whether access to the network is allowed in the SSB, REDCAP terminals have longer battery life, lower complexity, and lower cost, so REDCAP terminals can be widely used. However, REDCAP terminals have narrower bandwidth or fewer receiving antennas than the above-mentioned ordinary terminals, which results in REDCAP terminals having only lower transmission capabilities than ordinary terminals. If a large number of REDCAP terminals are connected to the network, the overall transmission performance of the network will decline, such as a decline in the average spectral efficiency of the network. Summary of the invention

[0005] The present application provides a method and apparatus for accessing a network device, which can control the number of REDCAP terminals accessing the network device and improve network transmission performance.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a method for accessing a network device, the method comprising: a terminal device receives first information from the network device, the first information being used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal comprising a first type REDCAP terminal and a second type REDCAP terminal, the first type REDCAP terminal and the second type REDCAP terminal operating in the same frequency domain range, the bandwidth of the second type REDCAP terminal being smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal being smaller than that of the first type REDCAP terminal; the terminal device determines whether to access the network device based on the first information, wherein the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

[0008] In the method provided in the first aspect, the terminal device can receive first information from the network device indicating whether to allow the first type REDCAP terminal to access the network device and whether to allow the second type REDCAP terminal to access the network device, and determine whether to access the network device according to the first information. In this way, the network device can control the number of the first type REDCAP terminals and the second type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0009] In a possible implementation, the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and whether the second type REDCAP terminal is allowed to access the network. The first indication information and the second indication information can also jointly indicate whether the first type REDCAP terminal is allowed to access the network device, and whether the second type REDCAP terminal is allowed to access the network, and the indication method is flexible.

[0010] A possible implementation method is that the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional physical broadcasting channel (PBCH) payload; or, the first indication information includes a field in the MIB indicating whether access is prohibited, and the second indication information includes a spare field in the MIB or includes a reserved field in an additional PBCH payload (additional PBCH payload / additional timing related PBCH payload bits), or a field in the PBCH other than the MIB. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and the indication is clear and convenient.

[0011] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device, the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload. Based on the above method, whether the first type REDCAP terminal is allowed to access the network device will affect whether the second type REDCAP terminal is allowed to access the network device. Therefore, the priority of the first type REDCAP terminal and the second type REDCAP terminal to access the network device can be distinguished to ensure that the terminal type with a higher priority has priority access to the network device.

[0012] In a possible implementation, the first information is included in an SSB, and the SSB includes an MIB and an additional PBCH payload. Based on the above method, the network device can indicate whether to allow the REDCAP terminal to access the network device through the MIB and the additional PBCH payload in the SSB.

[0013] In a possible implementation, the first indication information is included in a reserved field of downlink control information (DCI), and the second indication information is included in a reserved field of the DCI; or, the first indication information is included in a reserved field of the DCI, and the second indication information is included in a system information block type 1 (SIB1) information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of the DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through a reserved field in the DCI and / or a SIB1 information block.

[0014] A possible implementation manner, the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, and the second indication information is included in a reserved field in the DCI, or the second indication information is included in a SIB1 information block; or; the first indication information is included in a reserved field in the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the reserved field in the DCI, or the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the SIB1 information block.

[0015] In a possible implementation, the first information indicates that the first type REDCAP terminal and / or the second type REDCAP terminal are allowed to access the network device, and the method further includes: the terminal device sends second information to the network device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the terminal device can report its own type to the network device through the second information. On the one hand, it can avoid that when the network device schedules the REDCAP terminal for uplink transmission or downlink transmission, the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0016] In a possible implementation, the second information is carried on a physical random access channel (PRACH), the resources of the PRACH correspond to the first type REDCAP terminal or the second type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA, or radio resource control (RRC) signaling. Based on the above method, the terminal device can report the type of the terminal device to the network device through multiple methods such as PRACH resources, Msg3, MsgA, or RRC signaling, so that the network device can identify the type of the terminal device.

[0017] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the method further includes: the terminal device sends second information to the network device, the second information is used to indicate that the terminal device belongs to a REDCAP terminal; the terminal device sends third information to the network device, the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the terminal device can report the type of the terminal device to the network device through the second information and the third information so that the network device can identify the type of the terminal device. On the one hand, it can avoid that the frequency range scheduled by the network device exceeds the maximum bandwidth of the REDCAP terminal when scheduling the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0018] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the first type of REDCAP terminal can share the resources of the PRACH with the second type of REDCAP terminal. In this way, excessive segmentation of PRACH resources can be avoided, that is, excessive reduction of random access capacity can be avoided.

[0019] In a second aspect, an embodiment of the present application provides a method for accessing a network device, the method comprising: the network device determines first information, the first information being used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal comprising a first type of REDCAP terminal and a second type of REDCAP terminal, the first type of REDCAP terminal and the second type of REDCAP terminal operating in the same frequency domain range, the bandwidth of the second type of REDCAP terminal being smaller than that of the first type of REDCAP terminal, and / or the number of receiving antennas of the second type of REDCAP terminal being smaller than that of the first type of REDCAP terminal; the network device sends the first information to a terminal device.

[0020] In the method provided in the second aspect, the network device can determine first information indicating whether to allow a first type REDCAP terminal to access the network device and whether to allow a second type REDCAP terminal to access the network device, and send the first information to the terminal device. In this way, the network device can control the number of first type REDCAP terminals and second type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0021] In a possible implementation, the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and whether the second type REDCAP terminal is allowed to access the network. The first indication information and the second indication information can also jointly indicate whether the first type REDCAP terminal is allowed to access the network device, and whether the second type REDCAP terminal is allowed to access the network, and the indication method is flexible.

[0022] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes a whether to prohibit access field in the MIB, and the second indication information includes a spare field in the MIB or includes a reserved field in an additional PBCH payload. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and the indication is clear and very convenient.

[0023] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device, the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload. Based on the above method, whether the first type REDCAP terminal is allowed to access the network device will affect whether the second type REDCAP terminal is allowed to access the network device. Therefore, the priority of the first type REDCAP terminal and the second type REDCAP terminal to access the network device can be distinguished to ensure that the terminal type with a higher priority has priority access to the network device.

[0024] In a possible implementation, the first information is included in an SSB, and the SSB includes an MIB and an additional PBCH payload. Based on the above method, the network device can indicate whether to allow the REDCAP terminal to access the network device through the MIB and the additional PBCH payload in the SSB.

[0025] In a possible implementation, the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through a reserved field in the DCI and / or a SIB1 information block.

[0026] A possible implementation manner is that the first indication information is included in a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, and the second indication information is included in a reserved field in the DCI, or the second indication information is included in a SIB1 information block; or; the first indication information is included in a reserved field in the DCI, or the first indication information is included in the SIB1 information block, and the second indication information is included in a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the reserved field in the DCI, or the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the SIB1 information block.

[0027] In a possible implementation, the first information indicates that the first type REDCAP terminal and / or the second type REDCAP terminal are allowed to access the network device, and the method further includes: the network device receives second information from the terminal device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the network device can receive the second information from the terminal device, and determine that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal through the second information. On the one hand, it can avoid that when the network device schedules the REDCAP terminal for uplink transmission or downlink transmission, the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0028] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the first type REDCAP terminal or the second type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the network device can determine the type of the terminal device through multiple methods such as PRACH resources, Msg3, MsgA, or RRC signaling.

[0029] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the method further includes: the network device receives second information from the terminal device, the second information is used to indicate that the terminal device is a data REDCAP terminal; the network device receives third information from the terminal device, the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the network device can determine whether the terminal device is the first type REDCAP terminal or the second type REDCAP terminal through the second information and the third information. On the one hand, it can avoid that the frequency range scheduled by the network device exceeds the maximum bandwidth of the REDCAP terminal when scheduling the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0030] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the network device can determine the type of the terminal device in combination with the resources of the PRACH and Msg3, MsgA, or RRC signaling.

[0031] In a third aspect, an embodiment of the present application provides a communication device that can implement the method in the first aspect or any possible implementation of the first aspect. The device includes corresponding units or components for executing the above method. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the above method.

[0032] In a fourth aspect, an embodiment of the present application provides a communication device that can implement the method in the second aspect or any possible implementation of the second aspect. The device includes corresponding units or components for executing the above method. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a network device, or a chip, a chip system, or a processor that can support the network device to implement the above method.

[0033] In a fifth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device implements the method described in the above-mentioned first aspect, or any possible implementation method of the first aspect.

[0034] In a sixth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the programs or instructions are executed by the processor, the device implements the method described in the above-mentioned second aspect, or any possible implementation method of the second aspect.

[0035] In a seventh aspect, an embodiment of the present application provides a communication device, which is used to implement the method described in the above-mentioned first aspect or any possible implementation method of the first aspect.

[0036] In an eighth aspect, an embodiment of the present application provides a communication device, which is used to implement the method described in the above-mentioned second aspect or any possible implementation method of the second aspect.

[0037] In a ninth aspect, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, enables a computer to execute the method described in the first aspect or any possible implementation of the first aspect.

[0038] In the tenth aspect, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, enables the computer to execute the method described in the above-mentioned second aspect, or any possible implementation of the second aspect.

[0039] In the eleventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code is run on a computer, the computer executes the method described in the first aspect or any possible implementation of the first aspect.

[0040] In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, it enables the computer to execute the method described in the above-mentioned second aspect or any possible implementation of the second aspect.

[0041] In the thirteenth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned first aspect, or any possible implementation method of the first aspect.

[0042] In the fourteenth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned second aspect, or any possible implementation method of the second aspect.

[0043] In a fifteenth aspect, an embodiment of the present application provides a communication system. The system includes the device described in the third aspect and / or the device described in the fourth aspect, or the system includes the device described in the fifth aspect and / or the device described in the sixth aspect, or the system includes the device described in the seventh aspect and / or the device described in the eighth aspect.

[0044] It can be understood that any of the communication devices, chips, computer-readable media, computer program products or communication systems provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0045] In the sixteenth aspect, an embodiment of the present application provides a method for accessing a network device, the method comprising: a terminal device receives first information from the network device, the first information being used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal comprising a first type REDCAP terminal and a second type REDCAP terminal, or the REDCAP terminal comprising a third type REDCAP terminal, the first type REDCAP terminal and the second type REDCAP terminal operating in the same frequency domain range, the third type REDCAP terminal operating in a frequency domain range different from the first type REDCAP terminal and the second type REDCAP terminal operating in a frequency domain range; the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal; the terminal device determines whether to access the network device based on the first information, wherein the terminal device is the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal.

[0046] In the method provided in the sixteenth aspect, the terminal device can receive first information from the network device indicating whether to allow the first type REDCAP terminal to access the network device and whether to allow the second type REDCAP terminal to access the network device, or receive first information from the network device indicating whether to allow the third type REDCAP terminal to access the network device, and determine whether to access the network device according to the first information. In this way, the network device can control the number of the first type REDCAP terminals, the second type REDCAP terminals or the third type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0047] In a possible implementation, the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device and whether the second type REDCAP terminal is allowed to access the network. The first indication information and the second indication information can also jointly indicate whether the first type REDCAP terminal is allowed to access the network device and whether the second type REDCAP terminal is allowed to access the network, and the indication method is flexible.

[0048] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibition field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and the indication is clear and very convenient.

[0049] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload. Based on the above method, whether the first type REDCAP terminal is allowed to access the network device will affect whether the second type REDCAP terminal is allowed to access the network device. Therefore, the priority of the first type REDCAP terminal and the second type REDCAP terminal to access the network device can be distinguished to ensure that the terminal type with a higher priority has priority access to the network device.

[0050] In a possible implementation, the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through a reserved field in the DCI and / or a SIB1 information block.

[0051] A possible implementation manner, the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, and the second indication information is included in a reserved field in the DCI, or the second indication information is included in a SIB1 information block; or; the first indication information is included in a reserved field in the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the reserved field in the DCI, or the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the SIB1 information block.

[0052] In a possible implementation, the REDCAP terminal includes the third type REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type REDCAP terminal is allowed to access the network device. Based on the above, the network device can indicate whether the third type REDCAP terminal is allowed to access the network device through the third indication information.

[0053] In a possible implementation, the third indication information includes a spare field in the MIB; or, the third indication information includes a whether-to-prohibit-access field in the MIB. Based on the above method, the network device can indicate whether the third-type REDCAP terminal is allowed to access the network device through the spare field in the MIB, or can indicate whether the third-type REDCAP terminal is allowed to access the network device through the whether-to-prohibit-access field in the MIB, and the indication method is flexible.

[0054] In a possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload. Based on the above method, the network device can indicate whether to allow the REDCAP terminal to access the network device through the MIB and the additional PBCH payload in the SSB.

[0055] In a possible implementation, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block. Based on the above method, the network device can indicate whether the third type of REDCAP terminal is allowed to access the network device through the reserved field in the DCI, or can indicate whether the third type of REDCAP terminal is allowed to access the network device through the SIB1 information block, and the indication method is flexible.

[0056] In a possible implementation, the first information indicates that the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the network device; or the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the method also includes: the terminal device sends second information to the network device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal. Based on the above method, the terminal device can report its own type to the network device through the second information. On the one hand, it can avoid that the frequency range of scheduling exceeds the maximum bandwidth of the REDCAP terminal when the network device schedules the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0057] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the terminal device can report the type of the terminal device to the network device through multiple methods such as PRACH resources, Msg3, MsgA, or RRC signaling, so that the network device can identify the type of the terminal device.

[0058] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the method also includes: the terminal device sends second information to the network device, the second information is used to indicate that the terminal device belongs to a REDCAP terminal; the terminal device sends third information to the network device, the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the terminal device can report the type of the terminal device to the network device through the second information and the third information so that the network device can identify the type of the terminal device. On the one hand, it can avoid that the frequency range scheduled by the network device exceeds the maximum bandwidth of the REDCAP terminal when scheduling the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0059] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the first type of REDCAP terminal can share the resources of the PRACH with the second type of REDCAP terminal. In this way, excessive segmentation of PRACH resources can be avoided, that is, excessive reduction of random access capacity can be avoided.

[0060] In the seventeenth aspect, an embodiment of the present application provides a method for accessing a network device, the method comprising: the network device determines first information, the first information being used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal comprising a first type of REDCAP terminal and a second type of REDCAP terminal, or the REDCAP terminal comprising a third type of REDCAP terminal, the first type of REDCAP terminal and the second type of REDCAP terminal working in the same frequency domain range, the third type of REDCAP terminal working in a frequency domain range different from the first type of REDCAP terminal and the second type of REDCAP terminal working in a frequency domain range; the bandwidth of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal, and / or the number of receiving antennas of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal; the network device sends the first information to the terminal device.

[0061] In the method provided in the seventeenth aspect, the network device can determine the first information indicating whether the first type REDCAP terminal is allowed to access the network device, and whether the second type REDCAP terminal is allowed to access the network device, or determine the first information indicating whether the third type REDCAP terminal is allowed to access the network device, and send the first information to the terminal device. In this way, the network device can control the number of the first type REDCAP terminals and the second type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0062] In a possible implementation, the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device and whether the second type REDCAP terminal is allowed to access the network. The first indication information and the second indication information can also jointly indicate whether the first type REDCAP terminal is allowed to access the network device and whether the second type REDCAP terminal is allowed to access the network, and the indication method is flexible.

[0063] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibition field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload. Based on the above method, the first indication information and the second indication information can respectively indicate whether the first type REDCAP terminal is allowed to access the network device, and the indication is clear and very convenient.

[0064] In a possible implementation, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload. Based on the above method, whether the first type REDCAP terminal is allowed to access the network device will affect whether the second type REDCAP terminal is allowed to access the network device. Therefore, the priority of the first type REDCAP terminal and the second type REDCAP terminal to access the network device can be distinguished to ensure that the terminal type with a higher priority has priority access to the network device.

[0065] In a possible implementation, the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through a reserved field in the DCI and / or a SIB1 information block.

[0066] A possible implementation manner, the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, and the second indication information is included in a reserved field in the DCI, or the second indication information is included in a SIB1 information block; or; the first indication information is included in a reserved field in the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, wherein the DCI is used to schedule SIB1. Based on the above method, the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the reserved field in the DCI, or the network device can indicate whether a REDCAP terminal is allowed to access the network device through the SSB and the SIB1 information block.

[0067] In a possible implementation, the REDCAP terminal includes the third type REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type REDCAP terminal is allowed to access the network device. Based on the above method, the network device can indicate whether the third type REDCAP terminal is allowed to access the network device through the third indication information.

[0068] In a possible implementation, the third indication information includes a spare field in the MIB; or, the third indication information includes a whether-to-prohibit-access field in the MIB. Based on the above method, the network device can indicate whether the third type REDCAP terminal is allowed to access the network device through a spare field in the MIB or a whether-to-prohibit-access field of the MIB terminal, and the indication method is flexible.

[0069] In a possible implementation, the first information is included in an SSB, and the SSB includes an MIB and an additional PBCH payload. Based on the above method, the network device can indicate whether to allow the REDCAP terminal to access the network device through the MIB and the additional PBCH payload in the SSB.

[0070] In a possible implementation, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block. Based on the above method, the network device can indicate whether the third type of REDCAP terminal is allowed to access the network device through the reserved field in the DCI, or can indicate whether the third type of REDCAP terminal is allowed to access the network device through the SIB1 information block, and the indication method is flexible.

[0071] In a possible implementation, the first information indicates that the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the network device; or the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, and the method further includes: the network device receives second information from the terminal device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal. Based on the above method, the network device can receive the second information from the terminal device, and determine that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal through the second information. On the one hand, it can avoid that the frequency range of scheduling exceeds the maximum bandwidth of the REDCAP terminal when the network device schedules the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0072] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the network device can determine the type of the terminal device through multiple methods such as PRACH resources, Msg3, MsgA, or RRC signaling.

[0073] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the method also includes: the network device receives second information from the terminal device, the second information is used to indicate that the terminal device belongs to a REDCAP terminal; the network device receives third information from the network device, the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal. Based on the above method, the network device can determine whether the terminal device is the first type REDCAP terminal or the second type REDCAP terminal through the second information and the third information. On the one hand, it can avoid that the frequency range scheduled by the network device exceeds the maximum bandwidth of the REDCAP terminal when scheduling the REDCAP terminal for uplink transmission or downlink transmission. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0074] In a possible implementation, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling. Based on the above method, the network device can determine the type of the terminal device in combination with the resources of the PRACH and Msg3, MsgA, or RRC signaling.

[0075] In the eighteenth aspect, an embodiment of the present application provides a communication device, which includes: a receiving module and a processing module; the receiving module is used to receive first information from a network device, the first information is used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal includes a first type of REDCAP terminal and a second type of REDCAP terminal, or the REDCAP terminal includes a third type of REDCAP terminal, the first type of REDCAP terminal and the second type of REDCAP terminal work in the same frequency domain range, and the third type of REDCAP terminal works in a frequency domain range different from the first type of REDCAP terminal and the second type of REDCAP terminal; the bandwidth of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal, and / or the number of receiving antennas of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal; the processing module is used to determine whether to access the network device according to the first information, wherein the communication device is the first type of REDCAP terminal, or the second type of REDCAP terminal, or the third type of REDCAP terminal.

[0076] A possible implementation method is that the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device.

[0077] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload.

[0078] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0079] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0080] A possible implementation method is that the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI, or the second indication information is included in the SIB1 information block; or; the first indication information is included in a reserved field of the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, wherein the DCI is used to schedule SIB1.

[0081] In a possible implementation, the REDCAP terminal includes the third type REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type REDCAP terminal is allowed to access the network device.

[0082] In a possible implementation manner, the third indication information includes a spare field in the MIB; or, the third indication information includes an access prohibited field in the MIB.

[0083] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0084] In a possible implementation manner, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block.

[0085] In a possible implementation, the first information indicates that the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the network device; or, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, and the communication device further includes: a sending module; a sending module, used to send second information to the network device, the second information is used to indicate that the communication device is the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal.

[0086] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type of REDCAP terminal, the second type of REDCAP terminal, or the third type of REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0087] A possible implementation method is that the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the sending module is also used to send second information to the network device, and the second information is used to indicate that the communication device belongs to the REDCAP terminal; the sending module is also used to send third information to the network device, and the third information is used to indicate that the communication device is the first type REDCAP terminal or the second type REDCAP terminal.

[0088] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0089] In the nineteenth aspect, an embodiment of the present application provides a communication device, which includes: a processing module and a sending module; the processing module is used to determine first information, the first information is used to indicate whether a REDCAP terminal is allowed to access the communication device, the REDCAP terminal includes a first type of REDCAP terminal and a second type of REDCAP terminal, or the REDCAP terminal includes a third type of REDCAP terminal, the first type of REDCAP terminal and the second type of REDCAP terminal operate in the same frequency domain range, and the third type of REDCAP terminal operates in a frequency domain range different from the first type of REDCAP terminal and the second type of REDCAP terminal; the bandwidth of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal, and / or the number of receiving antennas of the second type of REDCAP terminal is smaller than that of the first type of REDCAP terminal; the sending module is used to send the first information to the terminal device.

[0090] In a possible implementation, the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the communication device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the communication device.

[0091] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the communication device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload.

[0092] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, and the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the communication device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0093] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0094] A possible implementation method is that the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI, or the second indication information is included in the SIB1 information block; or; the first indication information is included in a reserved field of the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, wherein the DCI is used to schedule SIB1.

[0095] In a possible implementation, the REDCAP terminal includes the third type REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type REDCAP terminal is allowed to access the communication device.

[0096] In a possible implementation manner, the third indication information includes a spare field in the MIB; or, the third indication information includes an access prohibited field in the MIB.

[0097] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0098] In a possible implementation manner, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block.

[0099] In a possible implementation, the first information indicates that the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the communication device; or, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the communication device, and the communication device further includes: a receiving module; the receiving module is used to receive second information from the terminal device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal.

[0100] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type of REDCAP terminal, the second type of REDCAP terminal, or the third type of REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0101] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the communication device; the receiving module is further used to receive second information from the terminal device, and the second information is used to indicate that the terminal device belongs to a REDCAP terminal; the receiving module is further used to receive third information from the communication device, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

[0102] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0103] In the twentieth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the programs or instructions are executed by the processor, the device implements the method described in the above-mentioned sixteenth aspect, or any possible implementation method of the sixteenth aspect.

[0104] In aspect 21, an embodiment of the present application provides a communication device, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the programs or instructions are executed by the processor, the device implements the method described in aspect 17 above, or any possible implementation method of aspect 17.

[0105] In aspect 22, an embodiment of the present application provides a communication device, which is used to implement the method described in the above aspect 16 or any possible implementation method of aspect 16.

[0106] In aspect twenty-third, an embodiment of the present application provides a communication device, which is used to implement the method described in the above-mentioned aspect seventeen, or any possible implementation method of aspect seventeen.

[0107] In aspect 24, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes the computer to execute the method described in aspect 16 or any possible implementation of aspect 16.

[0108] In aspect 25, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, causes the computer to execute the method described in aspect 17 above, or any possible implementation of aspect 17.

[0109] In aspect 26, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, it enables the computer to execute the method described in aspect 16 or any possible implementation of aspect 16.

[0110] In aspect twenty-seven, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, it enables the computer to execute the method described in aspect seventeen above, or any possible implementation of aspect seventeen.

[0111] In the twenty-eighth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned sixteenth aspect, or any possible implementation method of the sixteenth aspect.

[0112] In the twenty-ninth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned seventeenth aspect, or any possible implementation method of the seventeenth aspect.

[0113] In the 30th aspect, an embodiment of the present application provides a communication system. The system includes the apparatus described in the above-mentioned 18th aspect and / or the apparatus described in the above-mentioned 19th aspect, or the system includes the apparatus described in the above-mentioned 20th aspect and / or the apparatus described in the above-mentioned 21st aspect, or the system includes the apparatus described in the above-mentioned 22nd aspect and / or the apparatus described in the above-mentioned 23rd aspect.

[0114] It can be understood that any of the communication devices, chips, computer-readable media, computer program products or communication systems provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] Figure 1 A schematic diagram of the communication system architecture provided in an embodiment of the present application;

[0116] Figure 2 A schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0117] Figure 3 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 1 ;

[0118] Figure 4 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 2 ;

[0119] Figure 5 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 3 ;

[0120] Figure 6 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 4 ;

[0121] Figure 7 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 5 ;

[0122] Figure 8 Schematic diagram of the process of accessing a network device provided in an embodiment of the present application Figure 6 ;

[0123] Fig. 9 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 1 ;

[0124] Fig.10 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 2 ;

[0125] Fig.11 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 3 ;

[0126] Fig.12 A schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 4 ;

[0127] Fig.13 A schematic diagram of the structure of a chip provided in an embodiment of the present application;

[0128] Fig.14 A schematic diagram of the composition of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0129] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0130] The method provided in the embodiment of the present application can be used in various communication systems. For example, the communication system can be a fifth generation (5G) communication system, a new radio (NR) system, a communication system related to the third generation partnership project (3GPP), and a communication system that will evolve in the future, etc., without limitation. Figure 1 Taking the communication system 10 as an example, the method provided in the embodiment of the present application is described.

[0131] like Figure 1 , which is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of the present application. Figure 1 In the figure, the communication system 10 may include one or more network devices 101 (only one is shown) and terminal devices 102 to 104 that can communicate with the network device 101. Figure 1 It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0132] exist Figure 1 In the Uu port, the network device can provide wireless access services for the terminal device. Specifically, each network device corresponds to a service coverage area. The terminal device entering the area can communicate with the network device through the Uu port to receive the wireless access service provided by the network device. The terminal device and the network device can communicate through the Uu port link. Among them, the Uu port link can be divided into uplink (UL) and downlink (DL) according to the direction of the data transmitted thereon. The UL can transmit uplink data sent from the terminal device to the network device, and the DL can transmit downlink data transmitted from the network device to the terminal device. For example: Figure 1 In the example, the terminal device 103 is located in the coverage area of ​​the network device 101. The network device 101 can send downlink data to the terminal device 103 via DL, and the terminal device 103 can send uplink data to the network device 101 via UL.

[0133] Figure 1The network device in, for example: the network device 101 can be any device with wireless transceiver function. Including but not limited to: base station (gNodeB or gNB) or transceiver point (transmission receiving point / transmission reception point, TRP) in NR, base station of subsequent evolution of 3GPP, etc. The base station can be: macro base station, micro base station, micro-micro base station, small station, relay station, or balloon station, etc. Multiple base stations can support the network of the same technology mentioned above, or they can support the network of different technologies mentioned above. The base station can include one or more co-station or non-co-station TRPs. The network device can also be a wireless controller, a centralized unit (centralized unit, CU), and / or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device can also be a server, a wearable device, a machine communication device, or a vehicle-mounted device, etc. The following is an example of a network device being a base station. The multiple network devices can be base stations of the same type or base stations of different types. The base station can communicate with the terminal device, or it can communicate with the terminal device through a relay station.

[0134] Figure 1The terminal device in, for example: terminal 102 device, terminal 103 device or terminal 104 device is a device with wireless transceiver function, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal device can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a terminal in industrial control (industrial control), a vehicle-mounted terminal, a terminal in self-driving, a terminal in assisted driving, a terminal in remote medical, a terminal in smart grid (smart grid), a terminal in transportation safety (transportation safety), a terminal in smart city (smart city), a terminal in smart home (smarthome), etc. The embodiments of the present application do not limit the application scenarios. The terminal device may also be sometimes referred to as terminal equipment, user equipment (UE), access terminal, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc. The terminal device may be fixed or mobile.

[0135] As an example but not limitation, in the present application, the terminal device may be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0136] In the present application, the terminal device may be a terminal in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. The terminal device in the present application may be a terminal in machine type communication (MTC). The terminal device of the present application may be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units. The vehicle may implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0137] Figure 1 In the communication system 10 shown, the network device 101 broadcasts SSB. Among them, SSB includes primary synchronization signal (PSS), secondary synchronization signal (SSS) and physical broadcasting channel (PBCH). PBCH includes master information block (MIB) and additional PBCH payload (additional PBCH payload, or additional timing related PBCH payload). The introduction of PSS and SSS can refer to the explanation in conventional technology and will not be repeated here.

[0138] Among them, the MIB includes at least one of the following information: system frame number (SFN), common subcarrier spacing (subCarrierSpacingCommon), SSB subcarrier offset (ssb-SubcarrierOffset), demodulation reference signal (DMRS) symbol position in a time slot (dmrs-TypeA-Position), control resource set (CORESET) #0 and Type 0 common search space configuration information (pdcch-ConfigSIB1), whether to prohibit access (cellBarred) field, whether to allow intra-frequency cell (re) selection (intraFreqReselection) field or spare field (spare). The introduction of the above SFN, common subcarrier spacing, SSB subcarrier offset, DMRS symbol position in a time slot, CORESET #0 and Type 0 common search space configuration information, whether to prohibit access field, whether to allow intra-frequency cell (re) selection field and spare field can refer to the explanation in the conventional technology, and will not be repeated.

[0139] Among them, the additional PBCH payload includes information in the PBCH other than the MIB. Exemplarily, taking the frequency domain range of the communication system 10 as frequency range 1 (frequency range 1, FR1), that is, the frequency of the communication system 10 operating is less than 6GHz as an example, the additional PBCH payload includes at least one of the following information: SFN supplementary field, half-frame indication field, SSB subcarrier offset most significant bit (most significant bit, MSB) bit indication field or reserved field. Among them, the introduction of the SFN supplementary field, half-frame indication field, SSB subcarrier offset MSB bit indication field and reserved field can refer to the explanation in the conventional technology and will not be repeated here.

[0140] Exemplarily, taking the frequency domain range of the communication system 10 as frequency range 2 (FR2), that is, the frequency of the communication system 10 is greater than or equal to 6 GHz, as an example, the additional PBCH payload includes at least one of the following information: SFN supplementary field, half-frame indication field, or 3MSB bit indication field of SSB index. Among them, the introduction of SFN supplementary field, half-frame indication field, and 3MSB bit indication field of SSB index can refer to the explanation in the conventional technology, and will not be repeated.

[0141] If a terminal device, for example, terminal device 102, terminal device 103 or terminal device 104, wants to access network device 101, the terminal device will receive SSB, and receive downlink control information (downlink control information, DCI) according to the PBCH in the SSB, wherein DCI is used to schedule system information block type 1 (system information block Type 1, SIB1), and SIB1 includes SIB1 information block. After receiving the DCI, the terminal device can receive SIB1 according to the DCI, and obtain the random access (random access channel, RACH) configuration information in the SIB1 information block. Among them, the RACH configuration information includes parameters related to random access. For example, the time domain resources of the random access preamble, and / or, the frequency domain resources of the preamble, etc. Subsequently, the terminal device can initiate a random access procedure to access the network device 101.

[0142] Exemplarily, the terminal device may access the network device 101 through the following four-step (4-step) RACH method or two-step (2-step) RACH method. The following is an example of the terminal device 102 initiating a random access process.

[0143] (1) 4-step RACH method. The process of the terminal device 102 accessing the network device 101 through the 4-step RACH method may include the following steps 1 to 4.

[0144] Step 1: The terminal device 102 sends a random access request to the network device 101 .

[0145] The sending of the random access request is reflected in the sending of a random access preamble. The random access request is also called the first message or message 1 (Msg1) in the random access process.

[0146] Step 2: After detecting the random access request sent by the terminal device 102 , the network device 101 sends a random access response (RAR) to the terminal device 102 .

[0147] The random access response is also called the second message or message 2 (Msg2) in the random access process.

[0148] Step 3: The terminal device 102 receives the RAR from the network device 101 and sends uplink data to the network device 101 .

[0149] The uplink data is also referred to as the third message or message 3 (Msg3) in the random access process. In one case, Msg3 includes control plane data (CP data), for example, radio resource control (RRC) information. Exemplarily, the RRC information includes an RRC connection establishment request (RRC connection establishment request) or an RRC connection resume request (RRC connection resume request), etc. In another case, Msg3 includes control plane data and user plane data.

[0150] Step 4: The network device 101 receives uplink data from the terminal device 102 and sends a contention resolution message to the terminal device 102 .

[0151] Correspondingly, the terminal device 102 receives a contention resolution message from the network device 101 .

[0152] The contention resolution message is also called the fourth message or message 4 (Msg4) in the random access process.

[0153] (2) 2-step RACH method. The process of the terminal device 102 accessing the network device 101 through the 2-step RACH method may include the following steps a-b.

[0154] Step a: The terminal device 102 sends a message A (MsgA) to the network device 101 .

[0155] MsgA includes a random access preamble and a physical uplink shared channel (PUSCH). MsgA in step a is equivalent to Msg1 in step 1 and Msg3 in step 3, and can also be understood as "sending Msg1 and Msg3 together".

[0156] Step b: The network device 101 receives MsgA from the terminal device 102 and sends a message B (MsgB) to the terminal device 102 .

[0157] Correspondingly, the terminal device 102 receives the message B (MsgB) from the network device 101 .

[0158] Among them, MsgB includes at least one of a response message for preamble and a response message for uplink data. That is, MsgB includes at least one of a RAR and a contention resolution message. It can be understood that if MsgB does not include a contention resolution message, the above 2-step RACH method will be converted into a 4-step RACH method.

[0159] Understandably, Figure 1 The terminal devices in the system can be divided into different types of terminal devices as needed. For example, according to the size of the bandwidth, or the number of receiving antennas, the terminal devices can be divided into REDCAP terminals and ordinary terminals. Among them, the bandwidth of the REDCAP terminal is smaller than that of the ordinary terminal, and / or the number of receiving antennas of the REDCAP terminal is smaller than that of the ordinary terminal. For example, the bandwidth of the ordinary terminal can reach 100MHz, and the bandwidth of the REDCAP terminal is less than 100MHz; for another example, the number of receiving antennas of the ordinary terminal can reach 4, and the number of receiving antennas of the REDCAP terminal is only 2 or 1. Therefore, the REDCAP terminal can be used in scenarios with low bandwidth requirements. For example, the REDCAP terminal can be an industrial sensor, video surveillance or wearable device.

[0160] Furthermore, REDCAP terminals can be classified according to the size of bandwidth or the number of receiving antennas.

[0161] Exemplarily, taking the frequency domain range of the communication system 10 as FR1 as an example, the REDCAP terminal may include a first type REDCAP terminal and a second type REDCAP terminal. The bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, for example, the bandwidth of the first type REDCAP terminal is greater than 10 MHz and less than or equal to 20 MHz. The bandwidth of the second type REDCAP terminal is greater than 0 MHz and less than or equal to 10 MHz. Alternatively, the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, for example, the number of receiving antennas of the first type REDCAP terminal is 2. The number of receiving antennas of the second type REDCAP terminal is 1. Alternatively, the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, for example, the bandwidth of the first type REDCAP terminal is greater than 10 MHz and less than or equal to 20 MHz, and the number of receiving antennas of the first type REDCAP terminal is 2. The bandwidth of the second type REDCAP terminal is greater than 0 MHz and less than or equal to 10 MHz, and the number of receiving antennas of the second type REDCAP terminal is 1.

[0162] For example, taking the frequency domain range of the communication system 10 as FR2, the REDCAP terminal may include a third-category REDCAP terminal. The bandwidth of the third-category REDCAP terminal is greater than or equal to 50 MHz.

[0163] It can be understood that the first type REDCAP terminal, the second type REDCAP terminal and the third type REDCAP terminal in the embodiments of the present application are merely examples of the names of different types of terminal devices. In actual applications, the first type REDCAP terminal, the second type REDCAP terminal and the third type REDCAP terminal can also be named in other ways without limitation.

[0164] It is understandable that before initiating the random access process, the terminal device must also determine whether it is allowed to access the network device according to the instruction of the network device. For the above-mentioned ordinary terminal, the network device can indicate whether the ordinary terminal is allowed to access the network device through the access prohibition field (i.e., cellBarred field) in the MIB. However, for the above-mentioned first-class REDCAP terminals, second-class REDCAP terminals, and third-class REDCAP terminals, there is no method that allows the network device to control the access of the first-class REDCAP terminals, the second-class REDCAP terminals, and the third-class REDCAP terminals.

[0165] In order to solve the above problems, the embodiment of the present application provides a method for accessing a network device, which can control the number of REDCAP terminals accessing the network device. The method includes: a terminal device receives first information from the network device indicating whether to allow the REDCAP terminal to access the network device, and determines whether to access the network device according to the first information. Figure 3-Figure 8 As described in.

[0166] Figure 1 The communication system 10 shown is only used as an example and is not used to limit the technical solution of the present application. Those skilled in the art should understand that in the specific implementation process, the communication system 10 may also include other devices, and the number of network devices and terminals may also be determined according to specific needs without limitation.

[0167] Optionally, the present application embodiment Figure 1 Each network element in the network, such as network device 101, terminal device 102, terminal device 103 or terminal device 104, can be a functional module in a device. It can be understood that the functional module can be a component in a hardware device, such as a communication chip or a communication component in a terminal device or a network device, or a software functional module running on hardware, or a virtualized function instantiated on a platform (e.g., a cloud platform).

[0168] For example, Figure 1Each network element in the Figure 2 The communication device 200 is used to implement the communication device 200. Figure 2 The hardware structure diagram of the communication device applicable to the embodiment of the present application is shown in FIG.

[0169] The processor 201 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0170] The communication link 202 may include a path to transmit information between the above-mentioned components, such as a bus.

[0171] The communication interface 204 uses any transceiver-like device for communicating with other devices or communication networks, such as an Ethernet interface, a radio access network interface (RAN), a wireless local area network interface (WLAN), etc.

[0172] The memory 203 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited to this. The memory can be independent and connected to the processor through a communication line 202. The memory can also be integrated with the processor. The memory provided in the embodiment of the present application can generally have non-volatility. Among them, the memory 203 is used to store the computer execution instructions involved in the execution of the present application scheme, and the execution is controlled by the processor 201. The processor 201 is used to execute the computer-executable instructions stored in the memory 203, so as to implement the method provided in the embodiment of the present application.

[0173] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0174] In a specific implementation, as an embodiment, the processor 201 may include one or more CPUs, such as Figure 2 CPU0 and CPU1 in.

[0175] In a specific implementation, as an embodiment, the communication device 200 may include multiple processors, such as Figure 2 201 and processor 207 in the embodiment of the present invention. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0176] In a specific implementation, as an embodiment, the communication device 200 may further include an output device 205 and an input device 206. The output device 205 communicates with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 206 communicates with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0177] The communication device 200 can be a general-purpose device or a dedicated device. In a specific implementation, the communication device 200 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device or a computer with a plurality of other functions. Figure 2 The embodiment of the present application does not limit the type of the communication device 200.

[0178] Combine the following Figure 1 and Figure 2 The method for accessing a network device provided in an embodiment of the present application is specifically described.

[0179] It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not impose any specific limitations on this.

[0180] It should be noted that in the description of this application, words such as "first" or "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. The "first information" and other information with different numbers in this application are only used for the convenience of context, and different sequence numbers themselves do not have specific technical meanings. For example, the first information, the second information, etc. can be understood as one or any one of a series of information.

[0181] It should be noted that in the following embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the following embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0182] It can be understood that the same step or steps or messages with the same function in the embodiments of the present application can be referenced to each other in different embodiments.

[0183] It is understandable that in the embodiments of the present application, the network device and / or the terminal device can perform some or all of the steps in the embodiments of the present application, and these steps are only examples. The embodiments of the present application can also perform other steps or variations of various steps. In addition, the various steps can be performed in different orders presented in the embodiments of the present application, and it is possible that not all the steps in the embodiments of the present application need to be performed.

[0184] In the embodiments of the present application, the specific structure of the execution subject of the method for accessing a network device is not particularly limited by the embodiments of the present application. As long as the program that records the code of the method for accessing a network device according to the embodiments of the present application can be run to communicate according to the method for accessing a network device according to the embodiments of the present application, for example, the execution subject of the method for accessing a network device provided in the embodiments of the present application may be a network device, or a component used in a network device, such as a chip, and the present application does not limit this. Alternatively, the execution subject of the method for accessing a network device provided in the embodiments of the present application may be a terminal device, or a component used in a terminal device, such as a chip, and the present application does not limit this. The following embodiments are described by taking the execution subjects of the method for accessing a network device as network devices and terminal devices as examples.

[0185] like Figure 3 As shown, a method for accessing a network device provided in an embodiment of the present application includes steps 301 to 303.

[0186] Step 301: The network device determines first information.

[0187] The network device can be Figure 1 The network device 101 in.

[0188] The first information may be used to indicate whether the REDCAP terminal is allowed to access the network device. The REDCAP terminals include first-class REDCAP terminals and second-class REDCAP terminals. The first-class REDCAP terminals and the second-class REDCAP terminals have the same operating frequency range. For example, the operating frequency range of the first-class REDCAP terminals and the second-class REDCAP terminals is less than 6 GHz, and the range is recorded as FR1. When the operating frequency range is FR1, the introduction of the first-class REDCAP terminals and the second-class REDCAP terminals can refer to the above Figure 1 As described in.

[0189] In a possible implementation, the first information includes first indication information and second indication information. The first indication information and the second indication information may respectively indicate whether the first type of REDCAP terminal is allowed to access the network device, and whether the second type of REDCAP terminal is allowed to access the network. The first indication information and the second indication information may also jointly indicate whether the first type of REDCAP terminal is allowed to access the network device, and whether the second type of REDCAP terminal is allowed to access the network. Exemplarily, the first indication information and the second indication information may indicate whether the first type of REDCAP terminal is allowed to access the network device, and whether the second type of REDCAP terminal is allowed to access the network in the following manner.

[0190] Mode 1: The first indication information is used to indicate whether a first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether a second type REDCAP terminal is allowed to access the network device.

[0191] It can be understood that in this case, the network device can respectively indicate whether to allow the first type of REDCAP terminal to access the network device and whether to allow the second type of REDCAP terminal to access the network through the first indication information and the second indication information. The indication is clear and very convenient.

[0192] For method 1, there are six possible situations:

[0193] Case 1.1: The first message is included in the SSB. The introduction of SSB can be referred to above Figure 1 Description in .

[0194] In a possible implementation manner, the first indication information includes a spare field in the MIB. The second indication information includes a reserved field in an additional PBCH payload.

[0195] Exemplarily, the first indication information indicates whether the first type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0196] Exemplarily, the second indication information indicates whether the second type REDCAP terminal is allowed to access the network device through 1 bit in the reserved field in the additional PBCH payload. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the second indication information indicates that the second type REDCAP terminal is not allowed to access the network device, and vice versa. It can be understood that the 1 bit can be a high-order bit in the reserved field or a low-order bit in the reserved field, without limitation.

[0197] In another possible implementation manner, the first indication information includes a field indicating whether to prohibit access in the MIB, and the second indication information includes a spare field in the MIB or a reserved field in an additional PBCH payload.

[0198] It can be understood that the bandwidth of the first type of REDCAP terminal is similar to that of the ordinary terminal, and the two can share CORESET#0, with good compatibility, and the existence of the first type of REDCAP terminal has little impact on the performance of the network. Therefore, the first type of REDCAP terminal can reuse the field of the ordinary terminal indicating whether access to the network device is allowed. In other words, the field of whether to prohibit access is used to indicate whether the ordinary terminal is allowed to access the network device in addition to whether the ordinary terminal is allowed to access the network device, and is also used to indicate whether the first type of REDCAP terminal is allowed to access the network device. The bandwidth of the second type of REDCAP terminal is much smaller than that of the ordinary terminal, and the second type of REDCAP terminal may not be able to share CORESET#0 with the ordinary terminal, and the compatibility is poor. The number of second type of REDCAP terminals has a greater impact on the performance of the network. Therefore, it is necessary to use a field different from the field of whether to prohibit access to indicate whether the second type of REDCAP terminal is allowed to access the network device. In addition, the first type of REDCAP terminal reuses the field of the ordinary terminal indicating whether access to the network device is allowed, which can also save bits, so that the saved bits are used for other purposes, which is conducive to the backward compatibility expansion of the communication system.

[0199] Exemplarily, if the value of the access prohibited field is 1, the first indication information indicates that ordinary terminals are allowed to access the network device, and indicates that first-class REDCAP terminals are allowed to access the network device; if the value of the access prohibited field is 0, the first indication information indicates that ordinary terminals are not allowed to access the network device, and first-class REDCAP terminals are not allowed to access the network device, and vice versa.

[0200] Exemplarily, the second indication information indicates whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa. Alternatively, the second indication information indicates whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the reserved field in the additional PBCH payload. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa. It can be understood that the 1 bit in the reserved field can be a high-order bit in the reserved field, or a low-order bit in the reserved field, without limitation.

[0201] Case 1.2: The first information is included in DCI. The DCI is used to schedule SIB1.

[0202] SIB1 includes SIB1 information block. For the introduction of SIB1 information block, reference may be made to the explanation in conventional technology.

[0203] In a possible implementation manner, the first indication information is included in a reserved field of the DCI, and the second indication information is included in a reserved field of the DCI.

[0204] The first indication information and the second indication information are included in the reserved field of DCI, which can be understood as the first indication information including the first part of the DCI reserved field, and the second indication information including the second part of the DCI reserved field. For example, when the DCI reserved field is 5 bits, the first indication information includes one bit of the 5 bits, which is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information includes another bit of the 5 bits, which is used to indicate whether the second type REDCAP terminal is allowed to access the network device. Alternatively, a part of the DCI reserved field can be used to jointly indicate whether the first type REDCAP and the second type REDCAP are allowed to access.

[0205] Exemplarily, the first indication information includes 1 bit in the reserved field of the DCI, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa. The second indication information includes another 1 bit in the reserved field of the DCI, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0206] Case 1.3: The first information is included in the SIB1 information block.

[0207] In a possible implementation manner, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block.

[0208] The first indication information and the second indication information are included in the SIB1 information block, which can be understood as the first indication information including the first part of the SIB1 information block, and the second indication information including the second part of the SIB1 information block. For example, when the SIB1 information block is 32 bits, the first indication information includes one bit in the 32 bits, which is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information includes another bit in the 32 bits, which is used to indicate whether the second type REDCAP terminal is allowed to access the network device. Alternatively, a part of the SIB1 information block can be used to jointly indicate whether the first type REDCAP and the second type REDCAP are allowed to access.

[0209] Exemplarily, the first indication information includes 1 bit in the SIB1 information block, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa. The second indication information includes another 1 bit in the SIB1 information block, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0210] It can be understood that the 1 bit in the SIB1 information block used to indicate whether the first type of REDCAP terminal is allowed to access the network device can be included in the newly added information element (IE) in the SIB1 information block, or can be included in the original IE in the SIB1 information block. The 1 bit in the SIB1 information block used to indicate whether the second type of REDCAP terminal is allowed to access the network device can be included in the newly added IE in the SIB1 information block, or can be included in the original IE in the SIB1 information block.

[0211] Case 1.4: The first information is included in DCI and SIB1.

[0212] In a possible implementation manner, the first indication information is included in a reserved field of the DCI, and the second indication information is included in a SIB1 information block.

[0213] Exemplarily, the first indication information includes 1 bit in the reserved field of the DCI, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa. The second indication information includes 1 bit in the SIB1 information block, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0214] In another possible implementation manner, the first indication information is included in the SIB1 information block, and the second indication information is included in a reserved field of the DCI.

[0215] Exemplarily, the first indication information includes 1 bit in the SIB1 information block, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa. The second indication information includes 1 bit in the reserved field of the DCI, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device; if the value of the 1 bit is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0216] Case 1.5: The first information is included in the SSB and the DCI.

[0217] In a possible implementation, the first indication information includes a spare field in the MIB, or a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI.

[0218] Wherein, the first indication information includes a spare field in the MIB, a reserved field in the additional PBCH payload, or a field in the MIB on whether to prohibit access, which can refer to the above situation 1.1. The case where the second indication information is included in the reserved field of the DCI can refer to the above situation 1.2. For example, the first indication information includes a spare field in the MIB, and the second indication information is included in the reserved field of the DCI. Of course, other configuration combinations are also applicable.

[0219] In another possible implementation, the first indication information is included in a reserved field of the DCI, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB.

[0220] The case where the first indication information is included in the reserved field of the DCI can refer to the case 1.2 described above. The second indication information includes the spare field in the MIB, the reserved field in the additional PBCH payload, or the access prohibition field in the MIB can refer to the case 1.1 described above. For example, the first indication information is included in the reserved field of the DCI, and the second indication information includes the spare field in the MIB. Of course, other configuration combinations are also applicable.

[0221] Case 1.6: The first information is included in SSB and SIB1.

[0222] In a possible implementation manner, the first indication information includes a spare field in the MIB, or a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in the SIB1 information block.

[0223] Wherein, the first indication information includes a spare field in the MIB, a reserved field in the additional PBCH payload, or a field in the MIB on whether to prohibit access, which can refer to the above situation 1.1. The second indication information in the SIB1 information block can refer to the above situation 1.3. For example, the first indication information includes a spare field in the MIB, and the second indication information is included in the SIB1 information block. Of course, other configuration combinations are also applicable.

[0224] In another possible implementation, the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB.

[0225] The case where the first indication information is in the SIB1 information block may refer to the case 1.3 described above. The second indication information includes a spare field in the MIB, a reserved field in the additional PBCH payload, or a field in the MIB on whether to prohibit access, which may refer to the case 1.1 described above. For example, the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB. Of course, other configuration combinations are also applicable.

[0226] Mode 2: The first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device. In other words, the first indication information is used to indicate whether the REDCAP terminal (including the first type REDCAP terminal and the second type REDCAP terminal) is allowed to access the network device. The second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device.

[0227] It can be understood that if the first indication information indicates that the REDCAP terminal is not allowed to access the network device, then both the first type REDCAP terminal and the second type REDCAP terminal cannot access the network device. If the first indication information indicates that the REDCAP terminal is allowed to access the network device, then the first type REDCAP terminal can access the network device. In this case, if the second indication information indicates that the second type REDCAP terminal is allowed to access the network device, then the second type REDCAP terminal can access the network device, and if the second indication information indicates that the second type REDCAP terminal is not allowed to access the network device, then the second type REDCAP terminal cannot access the network device.

[0228] It can be understood that the bandwidth of the first type REDCAP terminal is similar to that of the ordinary terminal and can share CORESET#0, so the first type REDCAP terminal has less impact on the transmission performance of the network provided by the network device. Therefore, compared with the second type REDCAP terminal, the first type REDCAP terminal has a higher priority for accessing the network device.

[0229] For method 2, there are six possible situations:

[0230] Case 2.1: The first information is included in the SSB.

[0231] In a possible implementation manner, the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0232] Exemplarily, the first indication information indicates whether the first type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB. For example, if the value of the 1 bit is 1, the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the first indication information indicates that the first type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0233] Exemplarily, when the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB, the second indication information indicates whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the reserved field in the additional PBCH payload. For example, when the first indication information indicates that the first type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB, if the value of the 1 bit in the reserved field is 1, the second indication information indicates that the second type of REDCAP terminal is allowed to access the network device, and if the value of the 1 bit in the reserved field is 0, the second indication information indicates that the second type of REDCAP terminal is not allowed to access the network device, and vice versa. It can be understood that the 1 bit in the reserved field can be a high-order bit in the reserved field, or a low-order bit in the reserved field, without limitation.

[0234] It can be understood that in mode 2, when the first indication information indicates that the first REDCAP terminal is not allowed to access the network, the second type of REDCAP terminal is not allowed to access the network device. Therefore, the 1 bit in the reserved field does not need to be used to indicate whether the second type of REDCAP terminal is allowed to access the network device, but can be used for other purposes. For example, the 1 bit in the reserved field can be used to indicate whether the REDCAP terminal can search for SSBs of other cells on the same frequency. In this way, the first information can indicate more information, increasing the flexibility of the first information indication information.

[0235] Case 2.2: The first information is included in the DCI.

[0236] The introduction of situation 2.2 can refer to the above situation 1.2.

[0237] Case 2.3: The first information is included in the SIB1 information block.

[0238] The introduction of situation 2.3 can refer to the above situation 1.3.

[0239] Case 2.4: The first information is included in DCI and SIB1.

[0240] The introduction of situation 2.4 can refer to the above situation 1.4.

[0241] Case 2.5: The first information is included in the SSB and the DCI.

[0242] The introduction of situation 2.5 can refer to the above situation 1.5.

[0243] Case 2.6: The first information is included in SSB and SIB1.

[0244] The introduction of situation 2.6 can refer to the above situation 1.6.

[0245] In one possible implementation, the network device determines the first information based on the transmission performance of the network managed by the network device. For example, if the transmission performance of the network is greater than or equal to a threshold, the network device does not limit the number of REDCAP terminals; if the transmission performance of the network is less than the threshold, the network device limits the number of REDCAP terminals. Exemplarily, the transmission performance of the network may be related to the total number of terminal devices currently served by the network device, or the transmission spectrum efficiency of the network, etc. For example, compared to the case where the total number of terminal devices currently served by the network device is small, when the total number of terminal devices currently served by the network device is large, the transmission performance of the network is low. For another example, compared to the case where the transmission spectrum efficiency of the network is low, when the transmission spectrum efficiency of the network is high, the transmission performance of the network is high.

[0246] Step 302: The network device sends first information to the terminal apparatus.

[0247] The terminal device is Figure 1 For example, the terminal device is Figure 1 The terminal device 102 in; or, the terminal device is Figure 1 The terminal device 102 and the terminal device 103 in it.

[0248] Correspondingly, the terminal device receives the first information from the network device.

[0249] Step 303: The terminal device determines whether to access the network device according to the first information.

[0250] The terminal device is a first-category REDCAP terminal, a second-category REDCAP terminal or a common terminal.

[0251] In a possible implementation, if the terminal device is a common terminal, the terminal device determines whether to access the network device according to the cellBarred field. For example, if the value of the cellBarred field is 1, the terminal device determines to access the network device, and if the value of the cellBarred field is 0, the terminal device determines not to access the network device, and vice versa.

[0252] In a possible implementation manner, if the terminal device is a first type REDCAP terminal, the terminal device determines whether to access the network device according to the first indication information.

[0253] Exemplarily, taking the example of the first indication information indicating whether the first type of REDCAP terminal is allowed to access the network device through 1 bit in the free field in the MIB, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0254] Exemplarily, taking the first indication information indicating whether the first type of REDCAP terminal is allowed to access the network device through the access prohibited field in the MIB, if the value of the access prohibited field is 1, the terminal device determines to access the network device; if the value of the access prohibited field is 0, the terminal device determines not to access the network device, and vice versa.

[0255] Exemplarily, taking the first indication information including 1 bit in the reserved field of DCI, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0256] Exemplarily, taking the first indication information including 1 bit in the SIB1 information block, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0257] In a possible implementation manner, for the above manner 1, if the terminal device is a second-type REDCAP terminal, the terminal device determines whether to access the network device according to the second indication information.

[0258] Exemplarily, taking the example of the second indication information indicating whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the free field in the MIB, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0259] Exemplarily, taking the example of the second indication information indicating whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the reserved field in the additional PBCH payload, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0260] Exemplarily, taking the second indication information including 1 bit in the reserved field of DCI, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0261] Exemplarily, taking the second indication information including 1 bit in the SIB1 information block, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0262] In a possible implementation manner, for the above-mentioned manner 2, if the terminal device is a second-type REDCAP terminal, the terminal device determines whether to access the network device according to the first indication information and the second indication information.

[0263] Exemplarily, taking the case where the first indication information indicates whether the first type of REDCAP terminal is allowed to access the network device and whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB, and the second indication information indicates whether the second type of REDCAP terminal is allowed to access the network device through 1 bit in the reserved field in the additional PBCH payload, if the value of 1 bit in the spare field is 0, the terminal device determines not to access the network device, if the value of 1 bit in the spare field is 1 and the value of 1 bit in the reserved field is 1, the terminal device determines to access the network device, if the value of 1 bit in the spare field is 1 and the value of 1 bit in the reserved field is 0, the terminal device determines not to access the network device. Alternatively, if the value of 1 bit in the spare field is 1, the terminal device determines not to access the network device, if the value of 1 bit in the spare field is 0 and the value of 1 bit in the reserved field is 0, the terminal device determines to access the network device, if the value of 1 bit in the spare field is 0 and the value of 1 bit in the reserved field is 1, the terminal device determines not to access the network device.

[0264] Exemplarily, taking the case where the first indication information includes 1 bit in the reserved field of the DCI, which is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and whether the second type of REDCAP terminal is allowed to access the network device, and the second indication information includes 1 bit in the SIB1 information block, which is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, as an example, if the value of the 1 bit in the reserved field is 0, the terminal device determines not to access the network device, if the value of the 1 bit in the reserved field is 1, the value of the 1 bit in the SIB1 information block is 1, the terminal device determines to access the network device, if the value of the 1 bit in the reserved field is 1, the value of the 1 bit in the SIB1 information block is 0, the terminal device determines not to access the network device. Alternatively, if the value of the 1 bit in the reserved field is 1, the terminal device determines not to access the network device, if the value of the 1 bit in the reserved field is 0, the value of the 1 bit in the SIB1 information block is 0, the terminal device determines to access the network device, if the value of the 1 bit in the reserved field is 0, the value of the 1 bit in the SIB1 information block is 1, the terminal device determines to access the network device, if the value of the 1 bit in the reserved field is 0, the value of the 1 bit in the SIB1 information block is 1, the terminal device determines not to access the network device.

[0265] based on Figure 3 In the method shown, the network device can send first information to the terminal device for indicating whether to allow the first type REDCAP terminal to access the network device and whether to allow the second type REDCAP terminal to access the network device. After receiving the first information, the terminal device can determine whether to access the network device. In this way, the network device can control the number of the first type REDCAP terminals and the second type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0266] It is understandable that REDCAP terminals have smaller bandwidths than ordinary terminals. Therefore, network devices need to have different processing methods when scheduling resources for REDCAP terminals and ordinary terminals. For example, for REDCAP terminals, when scheduling resources, network devices cannot schedule frequency domain resources that exceed the maximum bandwidth of the REDCAP terminal. In addition, compared to ordinary terminals, REDCAP terminals have fewer antennas, which means that the receiving antenna gain of REDCAP terminals is smaller, so when scheduling REDCAP terminals for downlink reception, network devices may have to use lower coding rates or perform repeated transmissions to increase the reliability of downlink transmissions.

[0267] In summary, in the process of communicating with the terminal device, the network equipment has different processing methods for REDCAP terminals and ordinary terminals. Therefore, the REDCAP terminal needs to report its type at the appropriate time. For example, the REDCAP terminal can report its type during the random access process, or the REDCAP terminal can report its type through radio resource control (RRC) signaling after the random access is successful. In this way, the network equipment can allocate appropriate resources to the REDCAP terminal according to the type of the REDCAP terminal to improve the reliability of the REDCAP terminal transmission. It should be understood that the earlier the REDCAP terminal reports its type, the earlier the network equipment can identify the type of the REDCAP terminal and prepare for subsequent transmission to improve the reliability of transmission.

[0268] Optional, in Figure 3 In a possible implementation of the method shown, when the first information indicates that a first type of REDCAP terminal is allowed to access the network device; or when the first information indicates that a second type of REDCAP terminal is allowed to access the network device; or when the first information indicates that a first type of REDCAP terminal is allowed to access the network device and a second type of REDCAP terminal is allowed to access the network device, the terminal device indicated in the first information as being allowed to access the network device can report the type of the terminal device to the network device through the second information so that the network device can identify the type of the terminal device. Specifically, Figure 4 As shown, Figure 3 The method shown also includes step 401 .

[0269] Step 401: The terminal device sends second information to the network device.

[0270] The second information is used to indicate whether the terminal device is a first-class REDCAP terminal or a second-class REDCAP terminal. For example, if the terminal device is a first-class REDCAP terminal, the second information is used to indicate whether the terminal device is a first-class REDCAP terminal; if the terminal device is a second-class REDCAP terminal, the second information is used to indicate whether the terminal device is a second-class REDCAP terminal.

[0271] In a possible implementation, the second information is carried on a physical random access channel (PRACH). The resources of PRACH correspond to the first type of REDCAP terminal or the second type of REDCAP terminal. Among them, the resources of PRACH include at least one of the time domain resources of PRACH, the frequency domain resources of PRACH or the code domain resources of PRACH. For example, the time domain resources of PRACH and the frequency domain resources of PRACH may be the time domain resources and the frequency domain resources of the random access channel opportunity (RACHoccasion, RO), and the code domain resources of PRACH may be the preamble code of the terminal device sending PRACH on RO.

[0272] Among them, the PRACH resources are configured by the network device for the terminal device. The network device can configure the PRACH resources corresponding to the first type of REDCAP terminal and / or the PRACH resources corresponding to the second type of REDCAP terminal for the terminal device. Specifically, the following four exemplary cases can be referred to:

[0273] Case 1: When the terminal device is a first-class REDCAP terminal and the first information indicates that the first-class REDCAP terminal is allowed to access the network device, the network device configures the first-class REDCAP terminal with the resources of the PRACH corresponding to the first-class REDCAP terminal. The terminal device sends the second information to the network device through the resources of the PRACH corresponding to the first-class REDCAP terminal.

[0274] Case 2: When the terminal device is a first-class REDCAP terminal and the first information indicates that the first-class REDCAP terminal is allowed to access the network device; or when the terminal device is a first-class REDCAP terminal and the first information indicates that the first-class REDCAP terminal is allowed to access the network device and the second-class REDCAP terminal is allowed to access the network device, the network device configures the resources of the PRACH corresponding to the first-class REDCAP terminal for the first-class REDCAP terminal and configures the resources of the PRACH corresponding to the second-class REDCAP terminal for the second-class REDCAP terminal. The terminal device sends the second information to the network device through the resources of the PRACH corresponding to the first-class REDCAP terminal.

[0275] Case 3: When the terminal device is a second-class REDCAP terminal and the first information indicates that the second-class REDCAP terminal is allowed to access the network device, the network device configures the PRACH resources corresponding to the second-class REDCAP terminal for the second-class REDCAP terminal. The terminal device sends the second information to the network device through the PRACH resources corresponding to the second-class REDCAP terminal.

[0276] Case 4: When the terminal device is a second-class REDCAP terminal and the first information indicates that the second-class REDCAP terminal is allowed to access the network device; or when the terminal device is a second-class REDCAP terminal and the first information indicates that the first-class REDCAP terminal is allowed to access the network device, and the second-class REDCAP terminal is allowed to access the network device, the network device configures the resources of the PRACH corresponding to the first-class REDCAP terminal for the first-class REDCAP terminal and configures the resources of the PRACH corresponding to the second-class REDCAP terminal for the second-class REDCAP terminal. The terminal device sends the second information to the network device through the resources of the PRACH corresponding to the second-class REDCAP terminal.

[0277] It can be understood that the above PRACH resources may also be predefined, for example, the above PRACH resources may be defined in a protocol.

[0278] It can be understood that the PRACH resources corresponding to the first type of REDCAP terminals are different from the PRACH resources corresponding to the second type of REDCAP terminals.

[0279] In another possible implementation, the second information is carried in Msg3, MsgA or RRC signaling. That is, the terminal device can report the type of the terminal device in Msg3, MsgA or RRC signaling. Figure 1 The corresponding description in .

[0280] Furthermore, the second information includes an identifier of the type of the terminal device. Exemplarily, taking the identifier of the first type REDCAP terminal as ID 1 and the identifier of the second type REDCAP terminal as ID 2 as an example, if the second information includes ID 1, the second information indicates that the type of the terminal device is the first type REDCAP terminal; if the second information includes ID 2, the second information indicates that the type of the terminal device is the second type REDCAP terminal.

[0281] It is understandable that if the network device indicates that the ordinary terminal is allowed to access the network device, the ordinary terminal may report the type of the terminal or may not report the type of the terminal. In the case where the ordinary terminal does not report the terminal type, the network device does not receive the type reported by the terminal device and can determine that the terminal device is an ordinary terminal. The ordinary terminal can also report the type of the terminal device to the network device through various methods such as PRACH, Msg3, MsgA or RRC signaling. For details, please refer to the description of the REDCAP terminal reporting the terminal type in step 401 above, which will not be repeated here.

[0282] Correspondingly, the network device receives the second information from the terminal device. Subsequently, the network device may determine the type of the terminal device according to the second information.

[0283] Exemplarily, for the above cases 1 and 2, the network device determines that the terminal device is a first-type REDCAP terminal. For the above cases 3 and 4, the network device determines that the terminal device is a second-type REDCAP terminal.

[0284] Exemplarily, taking the first type REDCAP terminal as ID 1 and the second type REDCAP terminal as ID 2 as an example, if the second information includes ID 1, the network device determines that the type of the terminal device is a first type REDCAP terminal; if the second information includes ID 2, the network device determines that the type of the terminal device is a second type REDCAP terminal.

[0285] based on Figure 4 According to the method shown, the terminal device can report the type of the terminal device to the network device through multiple methods such as PRACH, Msg3, MsgA or RRC signaling, so that the network device can identify the type of the terminal device. On the one hand, it can prevent the network device from scheduling the REDCAP terminal for uplink transmission or downlink transmission, and the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0286] Optional, in Figure 3 In a possible implementation of the method shown, the terminal device is a first-type REDCAP terminal or a second-type REDCAP terminal, and when the first information indicates that the first-type REDCAP terminal and the second-type REDCAP terminal are allowed to access the network device, the terminal device reports the type of the terminal device to the network device through the second information and the third information, so that the network device can identify the type of the terminal device. Specifically, Figure 5 As shown, Figure 3 The method shown also includes step 501 and step 502 .

[0287] Step 501: The terminal device sends second information to the network device.

[0288] In a possible implementation manner, the second information is carried in PRACH. The resources of PRACH correspond to the REDCAP terminal. The resources of PRACH include at least one of the time domain resources of PRACH, the frequency domain resources of PRACH or the code domain resources of PRACH.

[0289] Among them, the PRACH resources are configured by the network device for the terminal device. The network device can configure the PRACH resources corresponding to the REDCAP terminal for the terminal device; or, the network device can configure the PRACH resources corresponding to the REDCAP terminal and the PRACH resources corresponding to the ordinary terminal for the terminal device; or, the network device can configure the PRACH resources corresponding to the first type of REDCAP terminal and the ordinary terminal, and the PRACH resources corresponding to the second type of REDCAP terminal for the terminal device. Specifically, you can refer to the following two exemplary cases:

[0290] Case 5: When the network device configures the PRACH resources corresponding to the REDCAP terminal for the terminal device; or when the network device configures the PRACH resources corresponding to the REDCAP terminal and the PRACH resources corresponding to the common terminal for the terminal device, if the terminal device is a first-type REDCAP terminal or a second-type REDCAP terminal, the terminal device sends the second information to the network device through the PRACH resources corresponding to the REDCAP terminal. The second information is used to indicate that the terminal device belongs to a REDCAP terminal.

[0291] In this case, the first type REDCAP terminal and the second type REDCAP terminal share PRACH resources. Therefore, the second information can indicate that the terminal device belongs to a REDCAP terminal or a REDCAP type terminal, but cannot indicate whether the terminal device is specifically a first type REDCAP terminal or a second type REDCAP terminal.

[0292] Case 6: When the network device configures the PRACH resources corresponding to the first type REDCAP terminal and the ordinary terminal, and the PRACH resources corresponding to the second type REDCAP terminal for the terminal device, if the terminal device is a first type REDCAP terminal, the terminal device sends the second information to the network device through the PRACH resources corresponding to the first type REDCAP terminal and the ordinary terminal. The second information is used to indicate that the terminal device is one of the first type REDCAP terminal and the ordinary terminal. If the terminal device is a second type REDCAP terminal, the terminal device sends the second information to the network device through the PRACH resources corresponding to the second type REDCAP terminal, and the second information is used to indicate that the terminal device is a second type REDCAP terminal.

[0293] In this case, the first type REDCAP terminal shares PRACH resources with the common terminal. Therefore, if the terminal device is a first type REDCAP terminal, the second information can indicate that the terminal device is one of the first type REDCAP terminal and the common terminal, but cannot indicate whether the terminal device is a first type REDCAP terminal or a common terminal. If the terminal device is a second type REDCAP terminal, the second information can directly indicate that the terminal device is a second type REDCAP terminal.

[0294] Correspondingly, the network device receives the second information from the terminal apparatus.

[0295] For the above situation 5, the network device may determine that the terminal device is a REDCAP terminal according to the second information.

[0296] For the above situation 6, the network device may determine that the terminal device is one of the first type REDCAP terminal and the common terminal according to the second information; or the network device may determine that the terminal device is the second type REDCAP terminal according to the second information.

[0297] Step 502: The terminal device sends third information to the network device.

[0298] In a possible implementation manner, the third information is carried in Msg3, MsgA or RRC signaling.

[0299] It can be understood that when the network device cannot determine the type of the terminal device according to the second information, the terminal device sends the third information to the network device. For example, when the network device determines that the terminal device is a REDCAP terminal according to the second information; or when the network device determines that the terminal device is one of a first-class REDCAP terminal and a common terminal according to the second information, the terminal device sends the third information to the network device.

[0300] In a possible implementation, when the network device determines that the terminal device is a REDCAP terminal according to the second information, the third information is used to indicate whether the terminal device is a first-class REDCAP terminal or a second-class REDCAP terminal. For example, if the terminal device is a first-class REDCAP terminal, the third information is used to indicate that the terminal device is a first-class REDCAP terminal; if the terminal device is a second-class REDCAP terminal, the third information is used to indicate that the terminal device is a second-class REDCAP terminal.

[0301] Furthermore, the third information includes an identifier of the type of the terminal device. Exemplarily, taking the identifier of the first type REDCAP terminal as ID 1 and the identifier of the second type REDCAP terminal as ID 2 as an example, if the third information includes ID 1, the third information indicates that the type of the terminal device is the first type REDCAP terminal; if the third information includes ID 2, the third information indicates that the type of the terminal device is the second type REDCAP terminal.

[0302] In a possible implementation, when the network device determines that the terminal device is one of a first-category REDCAP terminal and a common terminal according to the second information, the third information is used to indicate that the terminal device is a first-category REDCAP terminal.

[0303] Furthermore, the third information includes an identifier of the type of the terminal device. Exemplarily, taking the identifier of the first type REDCAP terminal as ID 1, if the third information includes ID 1, the third information indicates that the type of the terminal device is the first type REDCAP terminal.

[0304] It is understandable that if the network device indicates that the ordinary terminal is allowed to access the network device, the ordinary terminal may report the type of the terminal or may not report the type of the terminal. In the case where the ordinary terminal does not report the terminal type, the network device does not receive the type reported by the terminal device and can determine that the terminal device is an ordinary terminal. The ordinary terminal can also report the type of the terminal device to the network device through various methods such as PRACH, Msg3, MsgA or RRC signaling. For details, please refer to the description of the REDCAP terminal reporting the terminal type in the above steps 501 and 502, which will not be repeated here.

[0305] Correspondingly, the network device receives the third information from the terminal apparatus.

[0306] Furthermore, the network device determines the type of the terminal apparatus according to the third information.

[0307] Exemplarily, when the network device determines that the terminal device is a REDCAP terminal based on the second information, if the third information is used to indicate that the terminal device is a first-type REDCAP terminal, the network device determines that the type of the terminal device is a first REDCAP terminal; if the third information is used to indicate that the terminal device is a second-type REDCAP terminal, the network device determines that the type of the terminal device is a second REDCAP terminal.

[0308] Exemplarily, when the network device determines that the terminal device is one of a first-class REDCAP terminal and a common terminal according to the second information, if the third information is used to indicate that the terminal device is a first-class REDCAP terminal, the network device determines that the type of the terminal device is a first REDCAP terminal.

[0309] based on Figure 5 In the method shown, the terminal device can report the type of the terminal device to the network device through the second information and the third information so that the network device can identify the type of the terminal device. On the one hand, it can prevent the network device from scheduling the REDCAP terminal for uplink transmission or downlink transmission, and the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission. In addition, Figure 5 In the method shown, the first type REDCAP terminal can share PRACH resources with the second type REDCAP terminal, or the first type REDCAP terminal can share PRACH resources with ordinary terminals. In this way, excessive segmentation of PRACH resources can be avoided, that is, excessive reduction of random access capacity can be avoided.

[0310] It is understandable that, in addition to the above-mentioned REDCAP terminals including the first type REDCAP terminals and the second type REDCAP terminals, the REDCAP terminals may also include the third type REDCAP terminals. The frequency domain range in which the third type REDCAP terminals operate is different from the frequency domain range in which the first type REDCAP terminals and the second type REDCAP terminals operate. For example, the frequency domain range in which the first type REDCAP terminals and the second type REDCAP terminals operate is FR1, and the frequency domain range in which the third type REDCAP terminals operate is greater than or equal to 6 GHz, and this frequency domain range is recorded as FR2.

[0311] The following describes the method for accessing a network device provided in an embodiment of the present application by taking the example that the REDCAP terminal includes a first type REDCAP terminal and a second type REDCAP terminal, or the REDCAP terminal includes a third type REDCAP terminal.

[0312] like Figure 6 As shown, a method for accessing a network device provided in an embodiment of the present application includes steps 601 to 603.

[0313] Step 601: The network device determines first information.

[0314] The network device can be Figure 1 The network device 101 in.

[0315] The first information may be used to indicate whether the REDCAP terminal is allowed to access the network device. The REDCAP terminals include first-category REDCAP terminals and second-category REDCAP terminals; or, the REDCAP terminals include third-category REDCAP terminals. The introduction of the first-category REDCAP terminals and the second-category REDCAP terminals may refer to the above step 301. The frequency domain range in which the third-category REDCAP terminal operates is different from the frequency domain range in which the first-category REDCAP terminal and the second-category REDCAP terminal operate. For example, the frequency domain range in which the first-category REDCAP terminal and the second-category REDCAP terminal operate is FR1, and the frequency domain range in which the third-category REDCAP terminal operates is FR2. When the frequency domain range in which the third-category REDCAP terminal operates is FR2, the introduction of the third-category REDCAP terminal may refer to the above step 301. Figure 1 As described in.

[0316] It should be noted that, when the REDCAP terminal includes a first-type REDCAP terminal and a second-type REDCAP terminal, the introduction of the first information may refer to the description in the above step 301 .

[0317] The following describes the content of the first information when the REDCAP terminal includes a third-category REDCAP terminal.

[0318] In a possible implementation, the first information includes third indication information. The third indication information can be used to indicate whether the third type REDCAP terminal is allowed to access the network device. The third indication information has the following four situations:

[0319] Case 3.1: The third indication information includes a spare field in the MIB.

[0320] Exemplarily, the third indication information indicates whether the third type REDCAP terminal is allowed to access the network device through 1 bit in the spare field in the MIB. For example, if the value of the 1 bit is 1, the third indication information indicates that the third type REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the third indication information indicates that the third type REDCAP terminal is not allowed to access the network device, and vice versa.

[0321] Case 3.2: The third indication information includes a field indicating whether access is prohibited (cellBarred field).

[0322] Exemplarily, if the value of the access prohibited field is 1, the third indication information indicates that the third type of REDCAP terminal is allowed to access the network device; if the value of the access prohibited field is 0, the third indication information indicates that the third type of REDCAP terminal is not allowed to access the network device, and vice versa.

[0323] It is understandable that the bandwidth of the third-category REDCAP terminal is similar to that of the ordinary terminal, and the two can share CORESET#0, have good compatibility, and the existence of the third-category REDCAP terminal has little impact on the performance of the network. Therefore, the third-category REDCAP terminal can reuse the field of the ordinary terminal that indicates whether access to the network device is allowed. In other words, the field of whether to prohibit access is used to indicate whether the ordinary terminal is allowed to access the network device in addition to whether the ordinary terminal is allowed to access the network device. In addition, the third-category REDCAP terminal reuses the field of the ordinary terminal that indicates whether access to the network device is allowed, which can also save bits, so that the saved bits can be used for other purposes, which is conducive to the backward compatibility expansion of the communication system.

[0324] Case 3.3: The third indication information is included in a reserved field of the DCI.

[0325] Exemplarily, the third indication information includes 1 bit in the reserved field of the DCI, which is used to indicate whether the third type REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the third indication information indicates that the third type REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the third indication information indicates that the third type REDCAP terminal is not allowed to access the network device, and vice versa.

[0326] Case 3.4: The third indication information is included in the SIB1 information block.

[0327] Exemplarily, the third indication information includes 1 bit in the SIB1 information block, which is used to indicate whether the third type REDCAP terminal is allowed to access the network device. For example, if the value of the 1 bit is 1, the third indication information indicates that the third type REDCAP terminal is allowed to access the network device, and if the value of the 1 bit is 0, the third indication information indicates that the third type REDCAP terminal is not allowed to access the network device, and vice versa.

[0328] It can be understood that the 1 bit in the SIB1 information block for indicating whether the third type REDCAP terminal is allowed to access the network device can be included in the newly added IE in the SIB1 information block, and can also be included in the original IE in the SIB1 information block.

[0329] In a possible implementation, the network device determines the first information based on the transmission performance of the network managed by the network device. For example, if the transmission performance of the network is greater than or equal to a threshold, the network device does not limit the number of REDCAP terminals; if the transmission performance of the network is less than the threshold, the network device limits the number of REDCAP terminals.

[0330] Step 602: The network device sends first information to the terminal apparatus.

[0331] The introduction of step 602 can refer to the above step 302 and will not be repeated here.

[0332] Step 603: The terminal device determines whether to access the network device according to the first information.

[0333] The terminal device is a first-category REDCAP terminal, a second-category REDCAP terminal, a third-category REDCAP terminal or a common terminal.

[0334] When the terminal device is a first-type REDCAP terminal, a second-type REDCAP terminal, or a common terminal, the process of the terminal device determining whether to access the network device according to the first information can refer to the above step 303 and will not be described in detail.

[0335] The following describes a process in which the terminal device determines whether to access the network device according to the first information when the terminal device is a third-category REDCAP terminal.

[0336] Exemplarily, taking the example of the third indication information indicating whether the third type of REDCAP terminal is allowed to access the network device through 1 bit in the free field in the MIB, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0337] Exemplarily, taking the example of the third indication information indicating whether the third type of REDCAP terminal is allowed to access the network device through the access prohibited field in the MIB, if the value of the access prohibited field is 1, the terminal device determines to access the network device; if the value of the access prohibited field is 0, the terminal device determines not to access the network device, and vice versa.

[0338] Exemplarily, taking the third indication information including 1 bit in the reserved field of DCI, which is used to indicate whether the third type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0339] Exemplarily, taking the third indication information including 1 bit in the SIB1 information block, which is used to indicate whether the third type of REDCAP terminal is allowed to access the network device, if the value of this 1 bit is 1, the terminal device determines to access the network device; if the value of this 1 bit is 0, the terminal device determines not to access the network device, and vice versa.

[0340] based on Figure 6According to the method shown, the network device can send first information to the terminal device for indicating whether to allow the first type REDCAP terminal to access the network device and whether to allow the second type REDCAP terminal to access the network device; or, the network device can send first information to the terminal device for indicating whether to allow the third type REDCAP terminal to access the network device. After receiving the first information, the terminal device can determine whether to access the network device. In this way, the network device can control the number of the first type REDCAP terminals and the second type REDCAP terminals accessing the network device, or the network device can control the number of the third type REDCAP terminals accessing the network device to ensure the transmission performance of the network managed by the network device.

[0341] It is understandable that REDCAP terminals have smaller bandwidths than ordinary terminals. Therefore, network devices need to have different processing methods when scheduling resources for REDCAP terminals and ordinary terminals. For example, for REDCAP terminals, when scheduling resources, network devices cannot schedule frequency domain resources that exceed the maximum bandwidth of the REDCAP terminal. In addition, compared to ordinary terminals, REDCAP terminals have fewer antennas, which means that the receiving antenna gain of REDCAP terminals is smaller, so when scheduling REDCAP terminals for downlink reception, network devices may have to use lower coding rates or perform repeated transmissions to increase the reliability of downlink transmissions.

[0342] In summary, in the process of communicating with the terminal device, the network equipment has different processing methods for REDCAP terminals and ordinary terminals. Therefore, the REDCAP terminal needs to report its type at the appropriate time. For example, the REDCAP terminal can report its type during the random access process, or the REDCAP terminal can report its type through RRC signaling after the random access is successful. In this way, the network device can allocate appropriate resources to the REDCAP terminal according to the type of the REDCAP terminal to improve the reliability of the REDCAP terminal transmission. It should be understood that the earlier the REDCAP terminal reports its type, the earlier the network device can identify the type of the REDCAP terminal and prepare for subsequent transmission to improve the reliability of transmission.

[0343] Optional, in Figure 6In a possible implementation of the method shown, when the first information indicates that a first type of REDCAP terminal is allowed to access a network device; or, when the first information indicates that a second type of REDCAP terminal is allowed to access a network device; or, when the first information indicates that a first type of REDCAP terminal is allowed to access a network device, and a second type of REDCAP terminal is allowed to access a network device; or, when the first information indicates that a third type of REDCAP terminal is allowed to access a network device, the terminal device indicated in the first information as being allowed to access the network device can report the type of the terminal device to the network device through the second information so that the network device can identify the type of the terminal device. Specifically, Figure 7 As shown, Figure 6 The method shown also includes step 701 .

[0344] Step 701: The terminal device sends second information to the network device.

[0345] The second information is used to indicate that the terminal device is a first-category REDCAP terminal, a second-category REDCAP terminal, or a third-category REDCAP terminal. For example, if the terminal device is a first-category REDCAP terminal, the second information is used to indicate that the terminal device is a first-category REDCAP terminal; if the terminal device is a second-category REDCAP terminal, the second information is used to indicate that the terminal device is a second-category REDCAP terminal; if the terminal device is a third-category REDCAP terminal, the second information is used to indicate that the terminal device is a third-category REDCAP terminal.

[0346] In a possible implementation, the second information is carried on PRACH. The resources of PRACH correspond to the first type REDCAP terminal, the second type REDCAP terminal or the third type REDCAP terminal. Among them, the resources of PRACH include at least one of the time domain resources of PRACH, the frequency domain resources of PRACH or the code domain resources of PRACH. For example, the time domain resources of PRACH and the frequency domain resources of PRACH may be the time domain resources and the frequency domain resources of the random access channel occasion (RACH occasion, RO), and the code domain resources of PRACH may be the preamble code of the terminal device sending PRACH on RO.

[0347] Among them, when the terminal device is a first-class REDCAP terminal, and the first information indicates that the first-class REDCAP terminal is allowed to access the network device; or, when the terminal device is a first-class REDCAP terminal, and the first information indicates that the first-class REDCAP terminal is allowed to access the network device, and the second-class REDCAP terminal is allowed to access the network device, the introduction of PRACH resources can refer to the above step 401 and will not be repeated here.

[0348] Among them, when the terminal device is a second-category REDCAP terminal, and the first information indicates that the second-category REDCAP terminal is allowed to access the network device; or, when the terminal device is a second-category REDCAP terminal, and the first information indicates that the first-category REDCAP terminal is allowed to access the network device, and when the second-category REDCAP terminal is allowed to access the network device, the introduction of PRACH resources can refer to the description in the above step 401 and will not be repeated here.

[0349] The following describes the situation of PRACH resources when the terminal device is a third-category REDCAP terminal and the first information indicates that the third-category REDCAP terminal is allowed to access the network device.

[0350] The PRACH resources are configured by the network device for the terminal device. The network device can configure the PRACH resources corresponding to the third type of REDCAP terminal for the terminal device.

[0351] Exemplarily, the network device configures PRACH resources corresponding to the third type REDCAP terminal for the third type REDCAP terminal. The terminal device sends the second information to the network device through the PRACH resources corresponding to the third type REDCAP terminal.

[0352] It is understandable that the network device may also configure the PRACH resources corresponding to each type of terminal for each type of terminal. In this way, when the terminal device reports the type of the terminal device, the terminal device sends the second information to the network device through the PRACH resources corresponding to the terminal device.

[0353] Exemplarily, the network device configures the resources of the PRACH corresponding to the first type of REDCAP terminal for the first type of REDCAP terminal, configures the resources of the PRACH corresponding to the second type of REDCAP terminal for the second type of REDCAP terminal, and configures the resources of the PRACH corresponding to the third type of REDCAP terminal for the third type of REDCAP terminal. If the terminal device is a first type of REDCAP terminal, the terminal device sends the second information to the network device through the resources of the PRACH corresponding to the first type of REDCAP terminal. If the terminal device is a second type of REDCAP terminal, the terminal device sends the second information to the network device through the resources of the PRACH corresponding to the second type of REDCAP terminal. If the terminal device is a third type of REDCAP terminal, the terminal device sends the second information to the network device through the resources of the PRACH corresponding to the third type of REDCAP terminal.

[0354] It can be understood that the above PRACH resources may also be predefined, for example, the above PRACH resources may be defined in a protocol.

[0355] In another possible implementation, the second information is carried in Msg3, MsgA or RRC signaling. That is, the terminal device can report the type of the terminal device in Msg3, MsgA or RRC signaling. Figure 1 The corresponding description in .

[0356] Furthermore, the second information includes an identifier of the type of the terminal device. Exemplarily, taking the identifier of the first type REDCAP terminal as ID 1 and the identifier of the second type REDCAP terminal as ID 2 as an example, if the second information includes ID 1, the second information indicates that the type of the terminal device is the first type REDCAP terminal; if the second information includes ID 2, the second information indicates that the type of the terminal device is the second type REDCAP terminal.

[0357] Exemplarily, taking the identifier of the third type REDCAP terminal as ID 3 as an example, if the second information includes ID 3, the second information indicates that the type of the terminal device is a third type REDCAP terminal.

[0358] It is understandable that if the network device indicates that the ordinary terminal is allowed to access the network device, the ordinary terminal may report the type of the terminal or may not report the type of the terminal. In the case where the ordinary terminal does not report the terminal type, the network device does not receive the type reported by the terminal device, and can determine that the terminal device is an ordinary terminal. The ordinary terminal can also report the type of the terminal device to the network device through various methods such as PRACH, Msg3, MsgA or RRC signaling. For details, please refer to the description of the REDCAP terminal reporting the terminal type in step 701 above, which will not be repeated here.

[0359] Correspondingly, the network device receives the second information from the terminal device. Subsequently, the network device may determine the type of the terminal device according to the second information.

[0360] The terminal device is a first-type REDCAP terminal or a second-type REDCAP terminal. The process of the network device determining the type of the terminal device according to the second information can refer to the above step 401 and will not be described in detail.

[0361] Exemplarily, taking the example that the terminal device sends the second information to the network device through the PRACH resources corresponding to the third type REDCAP terminal, the network device determines that the terminal device is a third type REDCAP terminal.

[0362] Exemplarily, taking the identifier of the third type REDCAP terminal as ID 3 as an example, if the second information includes ID 3, the network device determines that the type of the terminal device is a third type REDCAP terminal.

[0363] based on Figure 7According to the method shown, the terminal device can report the type of the terminal device to the network device through multiple methods such as PRACH, Msg3, MsgA or RRC signaling, so that the network device can identify the type of the terminal device. On the one hand, it can prevent the network device from scheduling the REDCAP terminal for uplink transmission or downlink transmission, and the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission.

[0364] Optional, in Figure 6 In a possible implementation of the method shown, the terminal device is a first-type REDCAP terminal or a second-type REDCAP terminal, and when the first information indicates that the first-type REDCAP terminal and the second-type REDCAP terminal are allowed to access the network device, the terminal device reports the type of the terminal device to the network device through the second information and the third information, so that the network device can identify the type of the terminal device. Specifically, Figure 8 As shown, Figure 6 The method shown also includes step 801 and step 802 .

[0365] Step 801: The terminal device sends second information to the network device.

[0366] Step 802: The terminal device sends third information to the network device.

[0367] Among them, the introduction of step 801-step 802 can refer to the description of the above-mentioned step 501-step 502, and will not be repeated here.

[0368] based on Figure 8 In the method shown, the terminal device can report the type of the terminal device to the network device through the second information and the third information so that the network device can identify the type of the terminal device. On the one hand, it can prevent the network device from scheduling the REDCAP terminal for uplink transmission or downlink transmission, and the scheduled frequency range exceeds the maximum bandwidth of the REDCAP terminal. On the other hand, when scheduling the REDCAP terminal for downlink reception, the network device can use a lower coding rate or perform repeated transmission to increase the reliability of downlink transmission. In addition, Figure 8 In the method shown, the first type REDCAP terminal can share PRACH resources with the second type REDCAP terminal, or the first type REDCAP terminal can share PRACH resources with ordinary terminals. In this way, excessive segmentation of PRACH resources can be avoided, that is, excessive reduction of random access capacity can be avoided.

[0369] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between various network elements. It can be understood that in order to realize the above functions, the above-mentioned network equipment or terminal device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm operations of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0370] The embodiment of the present application can divide the functional modules of the network device or terminal device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0371] Fig. 9 Schematic diagram of the structure of a communication device 90 provided in an embodiment of the present application. Exemplarily, the communication device 90 is, for example, a terminal device 90. Exemplarily, the terminal device 90 is, for example, Figure 3 The embodiment shown, Figure 4 The embodiment shown or Figure 5 The terminal device described in the embodiment shown.

[0372] The terminal device 90 includes a transceiver module 901 and a processing module 902. Exemplarily, the terminal device 90 may be a terminal device, or may be a chip applied to a terminal device or other combined devices, components, etc. having the above-mentioned terminal device functions. When the terminal device 90 is a terminal device, the transceiver module 901 may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module 902 may be a processor (or a processing circuit), such as a baseband processor, which may include one or more CPUs. When the terminal device 90 is a component having the above-mentioned terminal device functions, the transceiver module 901 may be a radio frequency unit, and the processing module 902 may be a processor (or a processing circuit), such as a baseband processor. When the terminal device 90 is a chip system, the transceiver module 901 may be an input and output interface of a chip (such as a baseband chip), and the processing module 902 may be a processor (or a processing circuit) of the chip system, which may include one or more central processing units. It should be understood that the transceiver module 901 in the embodiment of the present application can be implemented by a transceiver or a transceiver-related circuit component, and the processing module 902 can be implemented by a processor or a processor-related circuit component (or, referred to as a processing circuit).

[0373] For example, the transceiver module 901 can be used to perform Figure 3 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 302, and / or other processes used to support the technology described herein. The processing module 902 can be used to perform Figure 3 All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 303, and / or other processes for supporting the technology described herein.

[0374] For another example, the transceiver module 901 may be used to execute Figure 4 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 302 and step 401, and / or other processes used to support the technology described herein. The processing module 902 can be used to perform Figure 4 All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 303, and / or other processes for supporting the technology described herein.

[0375] For another example, the transceiver module 901 may be used to execute Figure 5 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 302, step 501 and step 502, and / or other processes used to support the technology described herein. The processing module 902 can be used to perform Figure 3All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 303, and / or other processes for supporting the technology described herein.

[0376] Among them, the transceiver module 901 is used to receive first information from a network device, and the first information is used to indicate whether a REDCAP terminal is allowed to access the network device. The REDCAP terminal includes a first type REDCAP terminal and a second type REDCAP terminal. The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range, the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal.

[0377] The processing module 902 is used to determine whether to access the network device according to the first information, wherein the communication device is the first type REDCAP terminal or the second type REDCAP terminal.

[0378] In a possible implementation, the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device.

[0379] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB or includes a reserved field in an additional PBCH payload.

[0380] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the network device, the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0381] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0382] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0383] A possible implementation method is that the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI, or the second indication information is included in the SIB1 information block; or; the first indication information is included in a reserved field of the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, wherein the DCI is used to schedule SIB1.

[0384] In a possible implementation, the first information indicates that the first type REDCAP terminal and / or the second type REDCAP terminal is allowed to access the network device, and the transceiver module 901 is used to send second information to the network device, and the second information is used to indicate that the communication device is the first type REDCAP terminal or the second type REDCAP terminal.

[0385] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type REDCAP terminal or the second type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0386] A possible implementation method is that the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the transceiver module 901 is also used to send second information to the network device, and the second information is used to indicate that the communication device belongs to the REDCAP terminal; the transceiver module 901 is also used to send third information to the network device, and the third information is used to indicate that the communication device is the first type REDCAP terminal or the second type REDCAP terminal.

[0387] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0388] For other functions that the terminal device 90 can realize, please refer to Figure 3 The embodiment shown, Figure 4 The method embodiment shown or Figure 5 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0389] Fig.10 1 is a schematic diagram of the structure of a communication device 100 provided in an embodiment of the present application. For example, the communication device 100 is, for example, a network device 100. For example, the network device 100 is, for example, Figure 3 The embodiment shown, Figure 4 The embodiment shown or Figure 5 The network device described in the embodiment shown.

[0390] The network device 100 includes a processing module 1001 and a transceiver module 1002. Exemplarily, the network device 100 may be a network device, or may be a chip applied to a network device or other combined devices, components, etc. having the above network device functions. When the network device 100 is a network device, the processing module 1001 may be a processor (or a processing circuit), such as a baseband processor, which may include one or more CPUs. The transceiver module 1002 may be a transceiver, which may include an antenna and a radio frequency circuit, etc. When the network device 100 is a component having the above network device functions, the processing module 1001 may be a processor (or a processing circuit), such as a baseband processor. The transceiver module 1002 may be a radio frequency unit. When the network device 100 is a chip system, the processing module 1001 may be a processor (or a processing circuit) of the chip system, which may include one or more central processing units. The transceiver module 1002 may be an input and output interface of a chip (such as a baseband chip). It should be understood that the processing module 1001 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component (or, referred to as a processing circuit), and the transceiver module 1002 can be implemented by a transceiver or a transceiver-related circuit component.

[0391] For example, the processing module 1001 can be used to perform Figure 3 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 301, and / or other processes used to support the technology described herein. The transceiver module 1002 can be used to perform Figure 3 All transceiver operations performed by the network device in the illustrated embodiment, such as step 302, and / or other processes for supporting the technology described herein.

[0392] For another example, the processing module 1001 may be used to execute Figure 4 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 301, and / or other processes used to support the technology described herein. The transceiver module 1002 can be used to perform Figure 4 All transceiver operations performed by the network device in the illustrated embodiment, such as step 302 and step 401, and / or other processes for supporting the technology described herein.

[0393] For another example, the processing module 1001 may be used to execute Figure 5 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 301, and / or other processes used to support the technology described herein. The transceiver module 1002 can be used to perform Figure 5All transceiver operations performed by the network device in the illustrated embodiment, such as step 302, step 501 and step 502, and / or other processes for supporting the technology described herein.

[0394] Among them, the processing module 1001 is used to determine the first information, and the first information is used to indicate whether the REDCAP terminal is allowed to access the communication device. The REDCAP terminal includes a first type REDCAP terminal and a second type REDCAP terminal. The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range, the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal.

[0395] The transceiver module 1002 is configured to send the first information to the terminal device.

[0396] In a possible implementation, the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the communication device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the communication device.

[0397] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the communication device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB or includes a reserved field in an additional PBCH payload.

[0398] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the communication device, the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0399] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0400] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0401] A possible implementation method is that the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI, or the second indication information is included in the SIB1 information block; or; the first indication information is included in a reserved field of the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, wherein the DCI is used to schedule SIB1.

[0402] In a possible implementation, the first information indicates that the first type REDCAP terminal and / or the second type REDCAP terminal is allowed to access the communication device, and the transceiver module 1002 is used to receive second information from the terminal device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

[0403] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type REDCAP terminal or the second type REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0404] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the communication device; the transceiver module 1002 is further used to receive second information from the terminal device, and the second information is used to indicate that the terminal device is a data REDCAP terminal; the transceiver module 1002 is further used to receive third information from the terminal device, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

[0405] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0406] For other functions that the network device 100 can implement, please refer to Figure 3 The embodiment shown, Figure 4 The method embodiment shown or Figure 5 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0407] Fig.11 1 is a schematic diagram of the structure of a communication device 110 provided in an embodiment of the present application. For example, the communication device 110 is, for example, a terminal device 110. For example, the terminal device 110 is, for example, Figure 6 The embodiment shown, Figure 7 The embodiment shown or Figure 8 The terminal device described in the embodiment shown.

[0408] The terminal device 110 includes a transceiver module 1101 and a processing module 1102. Exemplarily, the terminal device 110 may be a terminal device, or may be a chip applied to a terminal device or other combined devices, components, etc. having the above-mentioned terminal device functions. When the terminal device 110 is a terminal device, the transceiver module 1101 may be a transceiver, and the transceiver may include an antenna and a radio frequency circuit, etc., and the processing module 1102 may be a processor (or a processing circuit), such as a baseband processor, and the baseband processor may include one or more CPUs. When the terminal device 110 is a component having the above-mentioned terminal device functions, the transceiver module 1101 may be a radio frequency unit, and the processing module 1102 may be a processor (or a processing circuit), such as a baseband processor. When the terminal device 110 is a chip system, the transceiver module 1101 may be an input and output interface of a chip (such as a baseband chip), and the processing module 1102 may be a processor (or a processing circuit) of the chip system, which may include one or more central processing units. It should be understood that the transceiver module 1101 in the embodiment of the present application can be implemented by a transceiver or a transceiver-related circuit component, and the processing module 1102 can be implemented by a processor or a processor-related circuit component (or, referred to as a processing circuit).

[0409] For example, the transceiver module 1101 can be used to perform Figure 6 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 602, and / or other processes used to support the technology described herein. The processing module 1102 can be used to perform Figure 3All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 603, and / or other processes for supporting the technology described herein.

[0410] For another example, the transceiver module 1101 may be used to execute Figure 7 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 602 and step 701, and / or other processes used to support the technology described herein. The processing module 1102 can be used to perform Figure 7 All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 603, and / or other processes for supporting the technology described herein.

[0411] For another example, the transceiver module 1101 may be used to execute Figure 8 All the sending and receiving operations performed by the terminal device in the embodiment shown, such as step 602, step 801 and step 802, and / or other processes used to support the technology described herein. The processing module 1102 can be used to perform Figure 8 All operations except the sending and receiving operations performed by the terminal device in the illustrated embodiment, such as step 603, and / or other processes for supporting the technology described herein.

[0412] Among them, the transceiver module 1101 is used to receive first information from a network device, and the first information is used to indicate whether a REDCAP terminal is allowed to access the network device, the REDCAP terminal includes a first type REDCAP terminal and a second type REDCAP terminal, or the REDCAP terminal includes a third type REDCAP terminal, the first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range, and the third type REDCAP terminal operates in a frequency domain range that is different from the first type REDCAP terminal and the second type REDCAP terminal; the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal.

[0413] The processing module 1102 is used to determine whether to access the network device according to the first information, wherein the communication device is the first type REDCAP terminal, or the second type REDCAP terminal, or the third type REDCAP terminal.

[0414] A possible implementation method is that the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the network device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the network device.

[0415] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload.

[0416] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, and the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the network device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0417] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0418] A possible implementation method is that the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, and the second indication information is included in a reserved field of the DCI, or the second indication information is included in the SIB1 information block; or; the first indication information is included in a reserved field of the DCI, or the first indication information is included in the SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access prohibited field in the MIB, wherein the DCI is used to schedule SIB1.

[0419] In a possible implementation, the REDCAP terminal includes the third type REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type REDCAP terminal is allowed to access the network device.

[0420] In a possible implementation manner, the third indication information includes a spare field in the MIB; or, the third indication information includes an access prohibited field in the MIB.

[0421] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0422] In a possible implementation manner, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block.

[0423] In a possible implementation, the first information indicates that the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the network device; or, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, and the transceiver module 1101 is used to send second information to the network device, and the second information is used to indicate that the communication device is the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal.

[0424] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type of REDCAP terminal, the second type of REDCAP terminal, or the third type of REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0425] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device; the transceiver module 1101 is also used to send second information to the network device, and the second information is used to indicate that the communication device belongs to a REDCAP terminal; the transceiver module 1101 is also used to send third information to the network device, and the third information is used to indicate that the communication device is the first type REDCAP terminal or the second type REDCAP terminal.

[0426] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0427] For other functions that the terminal device 110 can implement, please refer to Figure 3 The embodiment shown, Figure 4 The method embodiment shown or Figure 5 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0428] Fig.12 1 is a schematic diagram of the structure of the communication device 120 provided in an embodiment of the present application. For example, the communication device 120 is, for example, a network device 120. For example, the network device 120 is, for example, Figure 6 The embodiment shown, Figure 7 The embodiment shown or Figure 8 The network device described in the embodiment shown.

[0429] The network device 120 includes a processing module 1201 and a transceiver module 1202. Exemplarily, the network device 120 may be a network device, or may be a chip applied to the network device or other combined devices, components, etc. having the above network device functions. When the network device 120 is a network device, the processing module 1201 may be a processor (or a processing circuit), such as a baseband processor, and the baseband processor may include one or more CPUs. The transceiver module 1202 may be a transceiver, and the transceiver may include an antenna and a radio frequency circuit, etc. When the network device 120 is a component having the above network device functions, the processing module 1201 may be a processor (or a processing circuit), such as a baseband processor. The transceiver module 1202 may be a radio frequency unit. When the network device 120 is a chip system, the processing module 1201 may be a processor (or a processing circuit) of the chip system, and may include one or more central processing units. The transceiver module 1202 may be an input and output interface of a chip (such as a baseband chip). It should be understood that the processing module 1201 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component (or, referred to as a processing circuit), and the transceiver module 1202 can be implemented by a transceiver or a transceiver-related circuit component.

[0430] For example, the processing module 1201 can be used to perform Figure 6 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 601, and / or other processes used to support the technology described herein. The transceiver module 1202 can be used to perform Figure 6 All transceiver operations performed by the network device in the illustrated embodiment, such as step 602, and / or other processes for supporting the technology described herein.

[0431] For another example, the processing module 1201 may be used to execute Figure 7 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 601, and / or other processes used to support the technology described herein. The transceiver module 1202 can be used to perform Figure 7 All transceiver operations performed by the network device in the illustrated embodiment, such as step 602 and step 701, and / or other processes for supporting the technology described herein.

[0432] For another example, the processing module 1201 may be used to execute Figure 8 In the embodiment shown, all operations performed by the network device except the transceiver operation, such as step 601, and / or other processes used to support the technology described herein. The transceiver module 1202 can be used to perform Figure 8All transceiver operations performed by the network device in the illustrated embodiment, such as step 602, step 801 and step 802, and / or other processes for supporting the technology described herein.

[0433] Among them, the processing module 1201 is used to determine the first information, which is used to indicate whether the REDCAP terminal is allowed to access the communication device, the REDCAP terminal includes a first type REDCAP terminal and a second type REDCAP terminal, or the REDCAP terminal includes a third type REDCAP terminal, the first type REDCAP terminal and the second type REDCAP terminal work in the same frequency domain range, and the third type REDCAP terminal works in a frequency domain range that is different from the first type REDCAP terminal and the second type REDCAP terminal; the bandwidth of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal, and / or the number of receiving antennas of the second type REDCAP terminal is smaller than that of the first type REDCAP terminal.

[0434] The transceiver module 1202 is configured to send the first information to the terminal device.

[0435] In a possible implementation, the REDCAP terminal includes the first type REDCAP terminal and the second type REDCAP terminal; the first information includes first indication information and second indication information; wherein the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type REDCAP terminal is allowed to access the communication device; or, the first indication information is used to indicate whether the first type REDCAP terminal is allowed to access the communication device, and the first indication information and the second indication information are used to indicate whether the second type REDCAP terminal is allowed to access the communication device.

[0436] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, and the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the communication device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload; or, the first indication information includes an access prohibited field in the MIB, and the second indication information includes a spare field in the MIB, or includes a reserved field in an additional PBCH payload.

[0437] A possible implementation method is that the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the communication device, and the first indication information and the second indication information are used to indicate whether the second type of REDCAP terminal is allowed to access the communication device; the first indication information includes a spare field in the MIB, and the second indication information includes a reserved field in an additional PBCH payload.

[0438] A possible implementation method is that the first indication information is included in a reserved field of DCI, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a reserved field of DCI, and the second indication information is included in a SIB1 information block; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a reserved field of DCI; or, the first indication information is included in a SIB1 information block, and the second indication information is included in a SIB1 information block; wherein, the DCI is used to schedule SIB1.

[0439] In a possible implementation, the first indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, and the second indication information is included in a reserved field in the DCI, or the second indication information is included in a SIB1 information block; or; the first indication information is included in a reserved field in the DCI, or the first indication information is included in a SIB1 information block, and the second indication information includes a spare field in the MIB, a reserved field in an additional PBCH payload, or an access-prohibited field in the MIB, wherein the DCI is used to schedule SIB1. In a possible implementation, the REDCAP terminal includes the third type of REDCAP terminal; the first information includes third indication information; wherein the third indication information is used to indicate whether the third type of REDCAP terminal is allowed to access the communication device.

[0440] In a possible implementation manner, the third indication information includes a spare field in the MIB; or, the third indication information includes an access prohibited field in the MIB.

[0441] In one possible implementation, the first information is included in an SSB, and the SSB includes the MIB and the additional PBCH payload.

[0442] In a possible implementation manner, the third indication information is included in a reserved field of the DCI; or, the third indication information is included in a SIB1 information block.

[0443] In a possible implementation, the first information indicates that the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal is allowed to access the communication device; or, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the communication device, and the transceiver module 1202 is used to receive second information from the terminal device, and the second information is used to indicate that the terminal device is the first type REDCAP terminal, the second type REDCAP terminal, or the third type REDCAP terminal.

[0444] In a possible implementation method, the second information is carried on PRACH, the resources of the PRACH correspond to the first type of REDCAP terminal, the second type of REDCAP terminal, or the third type of REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; or, the second information is carried in Msg3, MsgA or RRC signaling.

[0445] In a possible implementation, the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the communication device; the transceiver module 1202 is further used to receive second information from the terminal device, and the second information is used to indicate that the terminal device belongs to a REDCAP terminal; the transceiver module 1202 is further used to receive third information from the communication device, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

[0446] In a possible implementation method, the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the resources of the PRACH include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH; the third information is carried in Msg3, MsgA, or RRC signaling.

[0447] For other functions that the network device 120 can implement, please refer to Figure 6 The embodiment shown, Figure 7 The method embodiment shown or Figure 8 The relevant introduction of the illustrated embodiment will not be repeated in detail.

[0448] Fig.13 A schematic diagram of the structure of a chip provided in an embodiment of the present application. The chip 130 includes one or more processors 1301 and an interface circuit 1302. Optionally, the chip 130 may also include a bus 1303. Among them:

[0449] The processor 1301 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1301 or an instruction in the form of software. The above-mentioned processor 1301 can be a general-purpose processor, a digital communicator (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods and steps in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0450] The interface circuit 1302 is used for sending or receiving data, instructions or information. The processor 1301 can process the data, instructions or other information received by the interface circuit 1302 and send the processing completion information through the interface circuit 1302.

[0451] Optionally, the chip 130 further includes a memory, which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory (NVRAM).

[0452] Optionally, the memory stores executable software modules or data structures, and the processor can perform corresponding operations by calling operation instructions stored in the memory (the operation instructions can be stored in the operating system).

[0453] Optionally, the chip 130 may be used in a communication device (including a terminal device or a network device) involved in an embodiment of the present application. Optionally, the interface circuit 1302 may be used to output the execution result of the processor 1301. The communication method provided by one or more embodiments of the present application may refer to the aforementioned embodiments, which will not be described in detail here.

[0454] It should be noted that the corresponding functions of the processor 1301 and the interface circuit 1302 can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0455] Fig.14 A schematic diagram of the composition of a communication system is shown in FIG. Fig.14 As shown, the communication system 140 may include: a terminal device 1401 and a network device 1402. It should be noted that: Fig.14 This is only an exemplary figure, and the embodiments of this application are not limited to Fig.14 The communication system 140 shown includes network elements and the number of network elements.

[0456] Among them, the terminal device 1401 has the above Fig. 9 The function of the communication device shown can be used to receive first information from the network device 1402 indicating whether the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device 1402, and determine whether to access the network device 1402 according to the first information.

[0457] The network device 1402 has the above Fig.10 The function of the communication device shown can be used to determine first information indicating whether the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device 1402, and send the first information to the terminal device 1401.

[0458] Alternatively, the terminal device has the above Fig.11 The function of the communication device shown can be used to receive first information from network device 1402 for indicating whether first-class REDCAP terminals and second-class REDCAP terminals are allowed to access network device 1402, or to receive first information from network device 1402 for indicating whether third-class REDCAP terminals are allowed to access network device 1402, and determine whether to access network device 1402 based on the first information.

[0459] The network device 1402 has the above Fig.12 The function of the communication device shown can be used to determine the first information used to indicate whether the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device 1402, or to determine the first information used to indicate whether the third type REDCAP terminal is allowed to access the network device 1402, and send the first information to the terminal device 1401.

[0460] It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding network element of the communication system 140, and will not be repeated here.

[0461] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0462] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0463] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0464] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0465] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks or optical disks.

[0466] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for accessing a network device, applied to a terminal device or a chip in a terminal device, characterized in that: The method comprises: Receive a system information block SIB1 from a network device, the SIB1 comprising first information, the first information being used to indicate whether a reduced-capability REDCAP terminal is allowed to access the network device, the REDCAP terminal comprising a first-category REDCAP terminal and a second-category REDCAP terminal, the first information comprising first indication information and second indication information, wherein the first indication information is used to indicate whether the first-category REDCAP terminal is allowed to access the network device, the second indication information is used to indicate whether the second-category REDCAP terminal is allowed to access the network device, and the number of receiving antennas of the second-category REDCAP terminal is less than that of the first-category REDCAP terminal; determining whether to access the network device according to the first information, wherein the terminal device is the first type REDCAP terminal or the second type REDCAP terminal; The method further comprises: When the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, second information is sent to the network device; the second information is used to indicate that the terminal device belongs to the REDCAP terminal; wherein the second information is carried in Msg3 or MsgA, or the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the first type REDCAP terminal and the second type REDCAP terminal share the resources of the PRACH corresponding to the REDCAP terminal; Sending third information to the network device, wherein the third information is carried in RRC signaling, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

2. The method according to claim 1, characterized in that The PRACH resources configured by the network device include PRACH resources corresponding to the REDCAP terminal and PRACH resources corresponding to a common terminal.

3. The method according to claim 1 or 2, characterized in that: The number of receiving antennas of the second-type REDCAP terminal is 1, and the number of receiving antennas of the first-type REDCAP terminal is 2.

4. The method according to any one of claims 1 to 3, characterized in that The frequency domain range in which the first type REDCAP terminal and the second type REDCAP terminal operate is a frequency range FR1, and the frequency range of FR1 is less than 6 GHz.

5. The method according to any one of claims 1 to 4, characterized in that The bandwidth of the second type REDCAP terminal is smaller than the bandwidth of the first type REDCAP terminal.

6. The method according to any one of claims 1 to 5, characterized in that The PRACH resources correspond to the REDCAP terminal, and the PRACH resources include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH.

7. The method according to any one of claims 1 to 6, characterized in that The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range.

8. A method for sending system information, characterized in that: The method comprises: Sending a system information block SIB1 to a terminal device, the SIB1 comprising first information, the first information being used to indicate whether a reduced-capability REDCAP terminal is allowed to access a network device, the REDCAP terminal comprising a first type of REDCAP terminal and a second type of REDCAP terminal, the first information comprising first indication information and second indication information, wherein the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, the second type of REDCAP terminal having less receiving antennas than the first type of REDCAP terminal; When the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, the method further includes: receiving second information from the terminal device, the second information being used to indicate that the terminal device belongs to the REDCAP terminal; wherein the second information is carried in Msg3 or MsgA, or the second information is carried in PRACH, resources of the PRACH correspond to the REDCAP terminal, and the first type of REDCAP terminal and the second type of REDCAP terminal share resources of the PRACH corresponding to the REDCAP terminal; Receive third information from the terminal device, where the third information is carried in RRC signaling, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

9. The method according to claim 8, characterized in that The PRACH resources configured by the network device include PRACH resources corresponding to the REDCAP terminal and PRACH resources corresponding to a common terminal.

10. The method according to claim 8 or 9, characterized in that: The number of receiving antennas of the second-type REDCAP terminal is 1, and the number of receiving antennas of the first-type REDCAP terminal is 2.

11. The method according to any one of claims 8 to 10, characterized in that: The frequency domain range in which the first type REDCAP terminal and the second type REDCAP terminal operate is a frequency range FR1, and the frequency range of FR1 is less than 6 GHz.

12. The method according to any one of claims 8 to 11, characterized in that The bandwidth of the second type REDCAP terminal is smaller than the bandwidth of the first type REDCAP terminal.

13. The method according to any one of claims 8 to 12, characterized in that: The PRACH resources correspond to the REDCAP terminal, and the PRACH resources include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH.

14. The method according to any one of claims 8 to 13, characterized in that: The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range.

15. A communication device, characterized in that: The communication device comprises: a transceiver module and a processing module; The transceiver module is used to receive a system information block SIB1 from a network device, the SIB1 includes first information, the first information is used to indicate whether a REDCAP terminal with reduced capability is allowed to access the network device, the REDCAP terminal includes a first type of REDCAP terminal and a second type of REDCAP terminal, the first information includes first indication information and second indication information, wherein the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access the network device, the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, and the number of receiving antennas of the second type of REDCAP terminal is less than that of the first type of REDCAP terminal; The processing module is used to determine whether to access the network device according to the first information, wherein the communication device is the first type REDCAP terminal or the second type REDCAP terminal; When the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, the transceiver module is further used to: Sending second information to the network device; the second information is used to indicate that the terminal device belongs to the REDCAP terminal; wherein the second information is carried in Msg3 or MsgA, or the second information is carried in PRACH, the resources of the PRACH correspond to the REDCAP terminal, and the first type of REDCAP terminal and the second type of REDCAP terminal share the resources of the PRACH corresponding to the REDCAP terminal; The transceiver module is further used to send third information to the network device, where the third information is carried in RRC signaling, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

16. The communication device according to claim 15, characterized in that: The PRACH resources configured by the network device include PRACH resources corresponding to the REDCAP terminal and PRACH resources corresponding to a common terminal.

17. The communication device according to claim 15 or 16, characterized in that: The number of receiving antennas of the second-type REDCAP terminal is 1, and the number of receiving antennas of the first-type REDCAP terminal is 2.

18. The communication device according to any one of claims 15 to 17, characterized in that: The frequency domain range in which the first type REDCAP terminal and the second type REDCAP terminal operate is a frequency range FR1, and the frequency range of FR1 is less than 6 GHz.

19. The communication device according to any one of claims 15 to 18, characterized in that: The bandwidth of the second type REDCAP terminal is smaller than the bandwidth of the first type REDCAP terminal.

20. The communication device according to any one of claims 15 to 19, characterized in that: The PRACH resources correspond to the REDCAP terminal, and the PRACH resources include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH.

21. The communication device according to any one of claims 15 to 20, characterized in that: The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range.

22. A communication device, characterized in that: The communication device includes a transceiver module; The transceiver module is used to send a system information block SIB1 to the terminal device, the SIB1 includes first information, the first information is used to indicate whether a reduced-capability REDCAP terminal is allowed to access the communication device, the REDCAP terminal includes a first type of REDCAP terminal and a second type of REDCAP terminal, the first information includes first indication information and second indication information, wherein the first indication information is used to indicate whether the first type of REDCAP terminal is allowed to access a network device, the second indication information is used to indicate whether the second type of REDCAP terminal is allowed to access the network device, and the number of receiving antennas of the second type of REDCAP terminal is less than that of the first type of REDCAP terminal; When the first information indicates that the first type REDCAP terminal and the second type REDCAP terminal are allowed to access the network device, the transceiver module is further used to: receiving second information from the terminal device, the second information being used to indicate that the terminal device belongs to the REDCAP terminal; wherein the second information is carried in Msg3 or MsgA, or the second information is carried in PRACH, resources of the PRACH correspond to the REDCAP terminal, and the first type of REDCAP terminal and the second type of REDCAP terminal share resources of the PRACH corresponding to the REDCAP terminal; Receive third information from the terminal device, where the third information is carried in RRC signaling, and the third information is used to indicate that the terminal device is the first type REDCAP terminal or the second type REDCAP terminal.

23. The communication device according to claim 22, characterized in that: The PRACH resources configured by the network device include PRACH resources corresponding to the REDCAP terminal and PRACH resources corresponding to a common terminal.

24. The communication device according to claim 22 or 23, characterized in that: The number of receiving antennas of the second-type REDCAP terminal is 1, and the number of receiving antennas of the first-type REDCAP terminal is 2.

25. The communication device according to any one of claims 22 to 24, characterized in that: The frequency domain range in which the first type REDCAP terminal and the second type REDCAP terminal operate is a frequency range FR1, and the frequency range of FR1 is less than 6 GHz.

26. The communication device according to any one of claims 22 to 25, characterized in that: The bandwidth of the second type REDCAP terminal is smaller than the bandwidth of the first type REDCAP terminal.

27. The communication device according to any one of claims 22 to 26, characterized in that: The PRACH resources correspond to the REDCAP terminal, and the PRACH resources include at least one of the time domain resources of the PRACH, the frequency domain resources of the PRACH, or the code domain resources of the PRACH.

28. The communication device according to any one of claims 22 to 27, characterized in that: The first type REDCAP terminal and the second type REDCAP terminal operate in the same frequency domain range.

29. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device executes the method as claimed in any one of claims 1 to 7, or executes the method as claimed in any one of claims 8 to 14.

30. A computer readable medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer performs the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 14.

31. A chip, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip executes the method as described in any one of claims 1 to 7 or the method as described in any one of claims 8 to 14.

32. A communication system, characterized in that: include: The device as claimed in any one of claims 15 to 21, and / or the device as claimed in any one of claims 22 to 28.

33. A computer program product comprising instructions, characterized in that When the method is executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 14.

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