Access information indication method, device, and system

Abstract

To relate to the field of wireless communication, and in particular to an access method in a wireless communication system to solve a problem in the prior art in which a network device cannot flexibly indicate one or more types of terminal devices that have access to or are barred from accessing a cell.SOLUTION: A method includes a network device transmitting at least one first information to a first terminal device, the at least one first information indicates at least one of a first access capability and a first access permission, and the first terminal device determining, on the basis of the at least one first information, whether the network device has capability for access of the first terminal device and / or whether access of the first terminal device is authorized.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to the field of wireless communication, and in particular to a method for indicating access information in a wireless communication system. [Background technology]

[0002] In the prior art, when a terminal device attempts to access a cell, the terminal device detects access-related information of a network device. When the terminal device receives a message indicating that the network device has prohibited access, the terminal device attempts to access another cell. The access prohibition message configured by the network device is broadcast to the terminal device. In this access method, one or more types of terminal devices cannot be flexibly indicated as accessing or being prohibited from accessing a cell. Summary of the Invention

[0003] The present application provides an access information indication method to solve a problem in the prior art in which a network device cannot flexibly indicate one or more types of terminal devices that access or are prohibited from accessing a cell.

[0004] According to a first aspect, the present application provides a communication method. The method may be executed by a terminal device, or may be executed by a chip in the terminal device. The following provides a description by using an example in which the method is executed by the terminal device. A first terminal device receives at least one first information from a network device. The at least one first information indicates at least one of a first access capability and a first access permission. The first access capability indicates whether the network device supports access of the first terminal device. The first access permission indicates whether the network device allows access of the first terminal device. The first terminal device determines whether the network device supports access of the first terminal device and / or whether the network device allows access of the first terminal device based on the at least one first information.

[0005] According to this solution, the network device indicates to the first terminal device whether the network device has the capability to support the access of the first terminal device and / or whether the network device allows the access of the first terminal device by using at least one first information. If the network device does not support the access of the first terminal device, the network device does not have the capability for the access of the terminal device type to which the first terminal device belongs. If the network device does not allow the access of the first terminal device, the network device has the capability for the access of the first terminal device but does not allow the access of the first terminal device.

[0006] In an optional implementation, the at least one first information comprises one or more bits. The at least one first information comprises: First terminal device access is not supported; The first terminal device is not permitted to access; The first terminal device is granted access, and the first terminal device receives information based on the first resource; The first terminal device is granted access, and the first terminal device receives information based on the second resource; The first terminal device is granted access, and the first terminal device receives information based on the third resource; The first terminal device is not permitted to access within a first time range; access of the first terminal device is not permitted within a second time range; and The first terminal device is not permitted to access within the third time range. Indicates one or more of the following:

[0007] The first resource, the second resource, and the third resource are different resources. The first time range, the second time range, and the third time range are three different time ranges. In the above implementation, the network device may set three or more types of resources for the access of the first terminal device. The first terminal device determines a resource, called a resource for the first terminal device to access the network device, or a resource for the first terminal device to receive information transmitted by the network device and / or transmit information to the network device, based on at least one first information. The network device more flexibly indicates the resource corresponding to the access of the first terminal device to the network device. This avoids resource congestion caused by an excessive number of terminal devices accessing the network device based on the same resource, and satisfies the load balancing requirement when the first terminal device accesses the network device. The network device can restrict the time range for the terminal device type that the terminal device is prohibited from accessing the network device by presetting different time ranges. This also promotes the load balancing of the network device. Alternatively, the network device may define different time ranges for different terminal devices in different application scenarios to satisfy the load balancing requirement of the network device. When the first terminal device detects that the network device does not support the access of the first terminal device, the first terminal device does not attempt to access the network device or does not attempt to access the network device within a preset period of time, which reduces the energy consumption of the terminal device.

[0008] In an optional implementation, the at least one first information comprises one bit, a first bit state of the one bit indicating that access of the first terminal device is not supported, and a second bit state of the one bit indicating that access of the first terminal device is permitted and the first terminal device receives information based on the first resource.

[0009] In an optional implementation, the at least one first information comprises one bit, a first bit state of the one bit indicating that the first terminal device receives information based on a first resource, and a second bit state of the one bit indicating that the first terminal device receives information based on a second resource.

[0010] In an optional implementation, the at least one first information comprises two bits. A first bit state of the two bits indicates that the first terminal device is not allowed to access. A second bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a first resource. A third bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a second resource. A fourth bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a third resource.

[0011] In an optional implementation, the at least one first information comprises two bits. A first bit state of the two bits indicates that the network device supports access for the first terminal device. A second bit state of the two bits indicates that the network device does not support access for the first terminal device. A third bit state of the two bits indicates that access for the first terminal device is permitted and that the first terminal device receives information based on the first resource. A fourth bit state indicates that access for the first terminal device is permitted and that the first terminal device receives information based on the second resource.

[0012] In any implementation, at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource, the second resource, or the third resource.

[0013] In any implementation, the first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource and the third resource have time domain location information, frequency domain location information, code domain location information, resource indexes, time domain resource offset values, frequency domain resource offset values, code domain resource offset values, power settings, or beam resources different from those of the first resource.

[0014] In any implementation, the first information may further indicate a control channel parameter and / or a search space of the first terminal device.

[0015] In an optional implementation, the at least one first information comprises one or more bits. The at least one first information comprises: The access of the first terminal device is not supported, and the access of the second terminal device is not supported; The access of the first terminal device is not supported, and the access of the second terminal device is supported; The access of the first terminal device is supported, and the access of the second terminal device is not supported; The first terminal device is not allowed to access and the second terminal device is not allowed to access; the first terminal device is not allowed to access and the second terminal device is allowed to access based on the first resource; the first terminal device is not allowed to access and the second terminal device is allowed to access based on the second resource; allowing access of a first terminal device based on a first resource and not allowing access of a second terminal device; allowing access of the first terminal device based on the second resource and not allowing access of the second terminal device; the first terminal device is granted access, the second terminal device is granted access, and the access of the first terminal device and the second terminal device is based on the first resource; and The first terminal device is allowed to access, the second terminal device is allowed to access, the first terminal device's access is based on a first resource, and the second terminal device's access is based on a second resource. Indicates one or more of the following:

[0016] The second terminal device and the first terminal device have different first characteristics, and the first resource and the second resource are different. The first characteristics may include one or more of the following: the number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, the latency requirement, and the processing capability. The number of resources may be the number of RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols. In the above implementation, when there are two or more terminal devices in the communication system with different first characteristics, that is, when it is understood that there are two types of terminal devices in the communication system, the network device may indicate whether the access of the first type of terminal device is permitted and / or whether the access of the second type of terminal device is permitted by using at least one first information. Furthermore, the resources corresponding to the access of the two types of terminal devices to the network device may be the same or different. This indication method is more flexible.

[0017] In any implementation, at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource or the second resource.

[0018] In any implementation, the first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource has time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset value, frequency domain resource offset value, code domain resource offset value, power setting, or beam resource different from those of the first resource. In the above manner, the network device may configure two or more types of resources for access of the first type terminal device and / or the second type terminal device.

[0019] In an optional implementation, the at least one first information is included in a master information block MIB. Alternatively, the at least one first information is included in downlink control information DCI. Alternatively, the at least one first information is included in a system information block SIB.

[0020] In an optional implementation, the communication frequency between the first terminal device and the network device is in frequency range 1. The at least one first information is included in the master information block MIB. Alternatively, the communication frequency between the first terminal device and the network device is in frequency range 2. The at least one first information is included in the downlink control information DCI or the system information block SIB. In the above implementation, the available bits of different frequency ranges are used to better adapt to different frequency range scenarios.

[0021] In an optional implementation, one of the at least one first information is included in a master information block MIB, and another of the at least one first information is included in downlink control information or system information.

[0022] In any implementation, the communication frequency between the first terminal device and the network device is within frequency range 2.

[0023] In a given implementation, the frequencies in frequency range 1 are lower than a first frequency and the frequencies in frequency range 2 are higher than the first frequency, the first frequency being 7125 MHz.

[0024] In any implementation, frequencies in frequency range 1 are between 410 MHz and 7125 MHz, and frequencies in frequency range 2 are greater than 24250 MHz.

[0025] In an optional implementation, the at least one first information comprises one piece of first information, the one piece of first information indicating the first access capability and / or the first access permission. Alternatively, the at least one first information comprises two pieces of first information, one piece of first information indicating the first access capability and the other piece of first information indicating the first access permission.

[0026] In an optional implementation, the first information is included in a master information block or a system information block 1. The at least one first information includes one or more bits in a field reserved for operator use cellReservedForoperatorUse, a field reserved for other use cellReservedForOtherUse, and / or a field reserved for compatibility cellReservedForFutureUse. The at least one first information indicates whether the network device supports access of the first terminal device. If the at least one first information indicates that the network device supports access of the first terminal device, cellReservedForoperatorUse, cellReservedForOtherUse, or cellReservedForFutureUse is not applied to the first terminal device.

[0027] According to a second aspect, the present application provides a communication method. The method may be executed by a network device, or may be executed by a chip in the network device. The following provides a description by using an example in which the method is executed by the network device. The network device determines whether access of a first terminal device is supported and / or whether access of the first terminal device is permitted. The network device sends at least one first information to the first terminal device. The at least one first information indicates at least one of a first access capability and a first access permission. The first access capability indicates whether the network device supports access of the first terminal device. The first access permission indicates whether the network device permits access of the first terminal device.

[0028] Based on this solution, the network device determines whether the access of the first terminal device is supported based on hardware capabilities, software capabilities or performance indicators. The network device determines whether the first terminal device should be allowed to access the network device based on the number of terminal devices accessing the cell and load balancing requirements. The first terminal device determines whether the network device has the capability to support the access of the first terminal device and / or whether the network device allows the access of the first terminal device by using at least one first information. If the network device does not support the access of the first terminal device, the network device does not have the capability for the access of the terminal device of the terminal device type to which the first terminal device belongs. If the network device does not allow the access of the first terminal device, the network device has the capability for the access of the first terminal device but does not allow the access of the first terminal device.

[0029] In an optional implementation, the at least one first information comprises one or more bits. The at least one first information comprises: First terminal device access is not supported; The first terminal device is not permitted to access; The first terminal device is granted access, and the first terminal device receives information based on the first resource; The first terminal device is granted access, and the first terminal device receives information based on the second resource; The first terminal device is granted access, and the first terminal device receives information based on the third resource; The first terminal device is not permitted to access within a first time range; access of the first terminal device is not permitted within a second time range; and The first terminal device is not permitted to access within the third time range. Indicates one or more of the following:

[0030] The first resource, the second resource, and the third resource are different resources. The first time range, the second time range, and the third time range are three different time ranges. In the above implementation, the network device may set three or more types of resources for the access of the first terminal device. The first terminal device determines a resource, called a resource for the first terminal device to access the network device, or a resource for the first terminal device to receive information transmitted by the network device and / or transmit information to the network device, based on at least one first information. The network device more flexibly indicates the resource corresponding to the access of the first terminal device to the network device. This avoids resource congestion caused by an excessive number of terminal devices accessing the network device based on the same resource, and satisfies the load balancing requirement when the first terminal device accesses the network device. The network device can restrict the time range for the terminal device type that the terminal device is prohibited from accessing the network device by presetting different time ranges. This also promotes the load balancing of the network device. Alternatively, the network device may define different time ranges for different terminal devices in different application scenarios to satisfy the load balancing requirement of the network device.

[0031] In an optional implementation, the at least one first information comprises one bit, a first bit state of the one bit indicating that access of the first terminal device is not supported, and a second bit state of the one bit indicating that access of the first terminal device is permitted and the first terminal device receives information based on the first resource.

[0032] In an optional implementation, the at least one first information comprises one bit, a first bit state of the one bit indicating that the first terminal device receives information based on a first resource, and a second bit state of the one bit indicating that the first terminal device receives information based on a second resource.

[0033] In an optional implementation, the at least one first information comprises two bits. A first bit state of the two bits indicates that the first terminal device is not allowed to access. A second bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a first resource. A third bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a second resource. A fourth bit state of the two bits indicates that the first terminal device is allowed to access and that the first terminal device receives information based on a third resource.

[0034] In an optional implementation, the at least one first information comprises two bits. A first bit state of the two bits indicates that the network device supports access for the first terminal device. A second bit state of the two bits indicates that the network device does not support access for the first terminal device. A third bit state of the two bits indicates that access for the first terminal device is permitted and that the first terminal device receives information based on the first resource. A fourth bit state indicates that access for the first terminal device is permitted and that the first terminal device receives information based on the second resource.

[0035] In an optional implementation, the at least one first information comprises one bit. The first information is information included in the master information block or the system information block 1. Optionally, the at least one first information is carried by at least one bit in a field cellReservedForoperatorUse reserved for operator use or a field cellReservedForOtherUse reserved for other uses. Alternatively, the first information is carried by at least one bit in a field cellReservedForFutureUse reserved for compatibility. In this case, the at least one first information is information specific to a terminal device of a first type. The specific information may be understood as information that can only be interpreted by a terminal device of a first type. Terminal devices of other types cannot interpret the specific information. The terminal device of the first type has the same first characteristic as the first terminal device.

[0036] In any implementation, at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource, the second resource, or the third resource.

[0037] In any implementation, the first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource and the third resource have time domain location information, frequency domain location information, code domain location information, resource indexes, time domain resource offset values, frequency domain resource offset values, code domain resource offset values, power settings, or beam resources different from those of the first resource.

[0038] In any implementation, the first information may further indicate a control channel parameter and / or a search space of the first terminal device.

[0039] In an optional implementation, the at least one first information comprises one or more bits. The at least one first information comprises: The access of the first terminal device is not supported, and the access of the second terminal device is not supported; The access of the first terminal device is not supported, and the access of the second terminal device is supported; The access of the first terminal device is supported, and the access of the second terminal device is not supported; The first terminal device is not allowed to access and the second terminal device is not allowed to access; the first terminal device is not allowed to access and the second terminal device is allowed to access based on the first resource; the first terminal device is not allowed to access and the second terminal device is allowed to access based on the second resource; allowing access of a first terminal device based on a first resource and not allowing access of a second terminal device; allowing access of the first terminal device based on the second resource and not allowing access of the second terminal device; the first terminal device is granted access, the second terminal device is granted access, and the access of the first terminal device and the second terminal device is based on the first resource; and The first terminal device is allowed to access, the second terminal device is allowed to access, the first terminal device's access is based on a first resource, and the second terminal device's access is based on a second resource. Indicates one or more of the following:

[0040] The second terminal device and the first terminal device have different first characteristics, and the first resource and the second resource are different. The first characteristics may include one or more of the following: the number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, the latency requirement, and the processing capability. The number of resources may be the number of RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols. In the above implementation, when there are two or more terminal devices in the communication system with different first characteristics, that is, when it is understood that there are two types of terminal devices in the communication system, the network device may indicate whether the access of the first type of terminal device is permitted and / or whether the access of the second type of terminal device is permitted by using at least one first information. Furthermore, the resources corresponding to the access of the two types of terminal devices to the network device may be the same or different. This indication method is more flexible.

[0041] In any implementation, at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource or the second resource.

[0042] In any implementation, the first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource has time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset value, frequency domain resource offset value, code domain resource offset value, power setting, or beam resource different from those of the first resource.

[0043] In the above manner, the network device may configure two or more types of resources for access of the first type of terminal device and / or the second type of terminal device.

[0044] In an optional implementation, the at least one first information is included in a master information block MIB. Alternatively, the at least one first information is included in downlink control information DCI. Alternatively, the at least one first information is included in a system information block SIB.

[0045] In an optional implementation, the communication frequency between the first terminal device and the network device is in frequency range 1. The at least one first information is included in the master information block MIB. Alternatively, the communication frequency between the first terminal device and the network device is in frequency range 2. The at least one first information is included in the downlink control information DCI or the system information block SIB. In the above implementation, the available bits of different frequencies are used to better adapt to different frequency range scenarios.

[0046] In an optional implementation, one of the at least one first information is included in a master information block MIB, and another of the at least one first information is included in downlink control information or system information.

[0047] In any implementation, the communication frequency between the first terminal device and the network device is within frequency range 2.

[0048] In a given implementation, the frequencies in frequency range 1 are lower than a first frequency and the frequencies in frequency range 2 are higher than the first frequency, the first frequency being 7125 MHz.

[0049] In any implementation, frequencies in frequency range 1 are between 410 MHz and 7125 MHz, and frequencies in frequency range 2 are greater than 24250 MHz.

[0050] In an optional implementation, the at least one first information comprises one piece of first information, the one piece of first information indicating the first access capability and / or the first access permission. Alternatively, the at least one first information comprises two pieces of first information, one piece of first information indicating the first access capability and the other piece of first information indicating the first access permission.

[0051] In an optional implementation, the first information is included in a master information block or a system information block 1. The at least one first information includes one or more bits in a field reserved for operator use cellReservedForoperatorUse, a field reserved for other use cellReservedForOtherUse, and / or a field reserved for compatibility cellReservedForFutureUse. The at least one first information indicates whether the network device supports access of the first terminal device. If the at least one first information indicates that the network device supports access of the first terminal device, cellReservedForoperatorUse, cellReservedForOtherUse, or cellReservedForFutureUse is not applied to the first terminal device.

[0052] According to a third aspect, the present application provides a communication device. For advantageous effects, please refer to the description of the first aspect. Details will not be described again here. The communication device includes at least one processor and an interface circuit. The interface circuit is configured to provide input or output of instructions and / or data to the at least one processor. Optionally, the communication device further includes a memory. The memory is configured to store computer programs or instructions. The at least one processor is coupled to the memory and the interface circuit. When the at least one processor executes the computer programs or instructions, the communication device performs the method performed by the terminal device in the above manner.

[0053] According to a fourth aspect, the present application provides a communication device. For advantageous effects, please refer to the description of the second aspect. Details will not be described again here. The communication device includes at least one processor and an interface circuit. The interface circuit is configured to provide input or output of instructions and / or data to the at least one processor. Optionally, the communication device further includes a memory. The memory is configured to store computer programs or instructions. The at least one processor is coupled to the memory and the interface circuit. When the at least one processor executes the computer programs or instructions, the communication device performs the method performed by the network device in the above manner.

[0054] According to a fifth aspect, there is provided a computer program product comprising computer program code which, when executed, performs the method performed by a terminal device in the above aspect.

[0055] According to a sixth aspect, there is provided a computer program product comprising computer program code which, when executed, performs the method performed by the network device in the above aspect.

[0056] According to a seventh aspect, the present application provides a chip system. The chip system includes a processor configured to implement the functionality of the network device in the method of the above aspect. In a possible design, the chip system further includes a memory configured to store program instructions and / or data. The chip system may include a chip, or may include a chip and other discrete components.

[0057] According to an eighth aspect, the present application provides a chip system. The chip system includes a processor configured to implement the functions of the terminal device in the method of the above aspect. In a possible design, the chip system further includes a memory configured to store program instructions and / or data. The chip system may include a chip, or may include a chip and other discrete components.

[0058] According to a ninth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed, performs the method performed by the terminal device in the above aspect.

[0059] According to a tenth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed, performs the method performed by the network device in the above aspect.

[0060] Hereinafter, the embodiments of the present application will be described in further detail with reference to the accompanying drawings. [Brief description of the drawings]

[0061] [Figure 1] FIG. 2 is a schematic diagram of a possible application scenario according to an embodiment of the present application; [Diagram 2] 1 is a schematic flow chart of an instruction method according to the present application. [Diagram 3] 4 is a schematic flow chart of another instruction method according to the present application. [Figure 4] 4 is a schematic flow chart of yet another instruction method according to the present application. [Diagram 5] 4 is a schematic flow chart of yet another instruction method according to the present application. [Figure 6] FIG. 1 is a schematic diagram of the structure of a communication device according to the present application. [Figure 7] FIG. 2 is a schematic diagram of the structure of a network device according to the present application; [Figure 8] FIG. 2 is a schematic diagram of the structure of a terminal device according to the present application; [Figure 9] FIG. 1 is a schematic diagram of a chip according to the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0062] The network architecture and service scenarios described in the embodiments of the present application are intended to more clearly describe the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided in the embodiments of the present application. Those skilled in the art may recognize that with the evolution of network architectures and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application can also be applied to similar technical problems.

[0063] In the embodiments of the present application, "multiple of" means two or more than two. The term "and / or" describes an association relationship between related objects and indicates that three relationships may exist. For example, A and / or B may represent three cases: only A exists, both A and B exist, and only B exists. The character " / " generally represents a "logical or" relationship between related objects.

[0064] 1 is a schematic diagram of a possible application scenario according to an embodiment of the present application. A communication system in this application scenario includes a network device 10 and at least two types of terminal devices 20 and 30. The network device may communicate with the at least two types of terminal devices by using one or more air interface technologies.

[0065] To access an NR network, a terminal device needs to perform cell search, obtain system information, and perform random access. To ensure that the terminal device can operate correctly in a cell after accessing the cell, the terminal device knows information about the cell based on the system information of the cell. In the process of cell search, the terminal device needs to search for a synchronization signal block (SS / PBCH Block, SSB). The synchronization signal block includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a demodulation reference signal (DMRS), and a physical broadcast channel (PBCH). Based on the SSB, the UE can obtain downlink synchronization, a physical-layer cell identity (PCI), and new system information of the cell.

[0066] For a cell, the system information of the cell is valid for all terminal devices in the cell. It can be understood that the system information is at the cell level. The system information can be classified into a Master Information Block (MIB) and multiple System Information Blocks (SIBs). After completing SSB decoding, the terminal device obtains the MIB information. The MIB information includes a field PDCCH-ConfigSIB1 indicating a control information configuration parameter for scheduling SIB1. The terminal device obtains information on the control resource set and SSB based on PDCCH-ConfigSIB1 by looking up a table to obtain the location of the Physical Downlink Control Channel (PDCCH). The PDCCH is used to schedule the Physical Downlink Shared Channel (PDSCH). The terminal device decodes the PDSCH and obtains the information indicated by SIB1.

[0067] From the above description, it can be seen that MIB and SIB1 are essential information for a terminal device to access a cell. Because the MIB information is at the cell level, the network device can indicate that the terminal device is prohibited from accessing the cell based on the MIB information. However, in the prior art, when there are two or more types of terminal devices in a cell, the network device cannot only allow a certain type of terminal device to access the cell and not allow other types of terminal devices to access the cell. In addition, the network device may not have the ability to support some types of terminal devices. In this case, when blindly trying to access a cell, the terminal device cannot succeed in accessing the cell, which will cause power consumption.

[0068] In consideration of this, the present application provides an access method. The principle of the method is as follows: a network device configures at least one first information to indicate whether the network device is capable of supporting access of a new type of terminal device and / or whether the network device allows access of a new type of terminal device. In this way, when there are two or more types of terminal devices in a communication system, the access information of the at least two types of terminal devices can be flexibly indicated.

[0069] Based on the process of a terminal device accessing a cell, the following describes words or terms that may appear in the embodiments of the present application, which words or terms are also part of the content of the present application.

[0070] 1. Master Information Block (MIB)

[0071] The MIB is carried on the physical broadcast channel PBCH. For a cell, the MIB contains the references to many system information blocks of the cell and scheduling information. The MIB message carries the most basic information, which is relevant for PDSCH decoding. Only after decoding the MIB can the terminal device continue to decode the data in the PDSCH based on the parameters in the MIB. In the prior art, the MIB information includes a CellBarred field to indicate whether the terminal device is allowed to access the cell. The MIB information further includes a 1-bit Spare field, which does not indicate any information.

[0072] In the existing protocol, 3 bits in the PBCH field indicate the index of the SSB if the maximum number of SSBs in one SSB period is equal to 64. If the maximum number of SSBs in one SSB period is less than 64, only 1 bit in the PBCH field indicates the index of the SSB. In this case, 2 bits are reserved.

[0073] 2. System Information Block (SIB)

[0074] The SIB includes system information elements. One SIB combines system information elements with the same characteristics, and different SIBs may have different characteristics. The SIB is included in the PDSCH that is scheduled by the corresponding PDCCH.

[0075] 3. Physical Downlink Control Channel (PDCCH)

[0076] The PDCCH is used to carry downlink control information (DCI). The PDCCH includes one or more control channel elements (CCEs), and the number of CCEs included in the PDCCH is determined by an aggregation level. The aggregation levels and the number of CCEs included in the PDCCH can be shown in Table 1. [Table 1]

[0077] 4. Control Resource Set (CORESET)

[0078] A control resource set indicates a set of time-frequency resources carrying the PDCCH. A control resource set includes several resource blocks (RBs) in the frequency domain and several symbols in the time domain. One terminal device may support multiple control resource sets. Each control resource set may be associated with only one mapping relationship between CCEs and resource element groups (REGs). A REG is the basic unit for PDCCH resource mapping. One REG is defined as one RB in one OFDM symbol. One RB is defined as 12 consecutive subcarriers in frequency and one OFDM symbol in the time domain. A REG bundle is a new concept introduced in NR. REGs first form a REG bundle by time-first (TF for short) mapping, and then are mapped to control resources in an interleaved or non-interleaved manner with the granularity of the REG bundle. One REG bundle includes a group of REGs that are continuous in the time and / or frequency domains. The size of one REG bundle is equal to the size of the REG occupied in the frequency domain multiplied by the size of the OFDM symbol occupied in the time domain.

[0079] For pdcch-ConfigSIB1 in the MIB information, different pdcch-ConfigSIB1 status values ​​correspond to information about different control resource sets. The terminal device obtains a time-frequency range in which the PDCCH may appear based on pdcch-ConfigSIB1, and detects all positions in which the PDCCH may appear through blind monitoring until the PDCCH is successfully decoded.

[0080] 5. Network Devices

[0081] The network device may be a base station, an access point, an access network device, or a device in an access network that communicates with wireless terminals over one or more sectors over an air interface. The network device may be configured to manually convert received over-the-air frames and IP packets and to act as a router between the wireless terminals and the remainder of the access network, which may include an Internet Protocol (IP) network. The network device may further coordinate attribute management of the air interface. For example, the network device may be a Base Transceiver Station (BTS) in Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), a Node B (NB) in Wideband Code Division Multiple Access (WCDMA), or an Evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), a relay node, an access point, or a base station in a future 5G network, e.g., a gNB. This is not limited here. It should be noted that in a 5G or NR system, there may be one or more Transmission Reception Points (TRPs) in one NR base station. All TRPs belong to the same cell, and each TRP and each terminal can use the measurement reporting method described in this embodiment of the present application. In other scenarios, the network device may be further divided into a control unit (CU) and a data unit (DU). There may be multiple DUs under one CU. The measurement reporting method described in the embodiment of the present application may be used for each DU and terminal.The difference between the CU-DU split scenario and the multi-TRP scenario is that the TRP only functions as a radio frequency unit or antenna device, and the DU can implement protocol stack functions, for example, the DU can implement physical layer functions.

[0082] 6. Terminal Devices

[0083] A terminal device may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device that provides voice and / or other service data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks through a Radio Access Network (RAN). A wireless terminal may be a mobile terminal, such as a mobile phone (also called a "cellular" phone) or a computer with a mobile terminal, such as a portable, packet-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, it may be a device such as a Personal Communication Service (PCS) phone, a cordless phone set, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant (PDA). A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or user equipment, without any limitation herein.

[0084] 7. Reduced Capability (REDCAP) Terminal Devices

[0085] In a New Radio (NR) communication system, REDCAP terminal devices need to be supported in application scenarios. REDCAP terminal devices usually have narrower bandwidth, fewer antenna ports, lower processing capabilities, longer processing times, and / or lower transmission rates, etc. In addition, REDCAP terminal devices have longer battery life, lower processing complexity, and / or lower cost.

[0086] 8. Radio Network Temporary Identifier (RNTI)

[0087] The RNTI is set by the network device and identifies a terminal device in connected mode in a cell, a group of terminal devices in a paging scenario, and / or a special radio channel. In operation, the different type RNTI scrambles the Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) of the radio channel. The DCI is included in the Physical Downlink Control Channel (PDCCH).

[0088] 9. Modulation and Coding Scheme (MCS)

[0089] The MCS modulation and coding table is a representation format provided in 802.11n to represent the communication rate of a WLAN. NR rate matching is performed based on the MCS index value. Each MCS index corresponds to a group of modulation orders, target code rates, and spectral efficiencies. The MCS index is indicated by using DCI. The PDSCH carrying SIB1 is scheduled by using DCI scrambled with System Information Radio Network Temporary Identifier (SI-RNTI for short). In this case, there are some reserved spare bits, which are 15 bits or 17 bits. In the following embodiment, the first field represents the spare bits.

[0090] In existing protocols, the modulation order must be less than or equal to 2 for the paging radio network temporary identifier P-RNTI, the random access radio network temporary identifier RA-RNTI, and the DCI scrambled with the SI-RNTI.

[0091] The DCI includes 5 bits to indicate the MCS index value. When the MCS index indication range is 0 to 9, the corresponding modulation order is 2. When the MCS index indication range is 10 to 16, the modulation order is 4. When the MCS index indication range is 17 to 28, the modulation order is 6. When the MCS index indication range is 29, 30, and 31, the modulation orders are 2, 4, and 6, respectively. When the MCS index value is 0 to 28, each index value corresponds to a code rate and a spectral efficiency. When the MCS index value is 29 to 31, the MCS index value is in a reserved state, and no code rate or spectral efficiency is temporarily indicated. Thus, for the PDSCH carrying SIB1, the DCI of the PDSCH is scheduled.

[0092] When the indicated modulation order does not exceed 2, the MCS index value ranges from 0 to 9 accordingly. In this case, the status of the 5-bit field indicating the MCS index value is from 00000 to 01001, and the most significant bit of the MCS index value indication field is 0.

[0093] 10. Frequency Range (FR)

[0094] The frequency range is also called the frequency band. In an NR system, the frequencies in FR1 range from 410 MHz to 7125 MHz, and the frequencies in FR2 are higher than 24250 MHz.

[0095] The technical solutions provided in this application may be applied to various communication systems, for example, 5th generation mobile networks (5G) communication systems, future evolved systems, or multiple coverage communication systems. The technical solutions provided in this application may be applied to multiple application scenarios of the above communication systems, for example, Industrial Wireless Sensor Networks (IWSN) and Video Surveillance. The technical solutions provided in this application may support multiple terminal device types, for example, REDCAP terminal devices, including industrial wireless sensors, video surveillance cameras, or wearable devices (smart watches).

[0096] In order to allow those skilled in the art to better understand the technical solutions in the embodiments of the present application, the following clearly and completely describes the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It is clear that the described embodiments are only a part, not all of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts should fall within the protection scope of the present application.

[0097] Fig. 2 is a schematic flow chart of an access information indication method according to the present application. The method may be performed by a terminal device and a network device, or may be performed by a chip in a terminal device and a chip in a network device. The network device in Fig. 2 may be the access network device 10 in Fig. 1, and the terminal device may be the terminal device 20 in Fig. 1. The method shown in Fig. 2 may include the following operations.

[0098] Optionally, S200: the network device determines at least one first information.

[0099] Specifically, the network device determines at least one first information based on the type of terminal device in the cell, the number of terminal devices in the cell, and / or resource allocation for the terminal device in the cell, where the at least one first information indicates at least one of a first access capability and a first access permission, where the first access capability is whether the network device supports access of the first terminal device, and the first access permission is whether the network device allows access of the first terminal device.

[0100] Optionally, the at least one first information is included in a master information block MIB, a system information block SIB or downlink control information, or one of the at least one first information is included in a MIB and the other first information is included in a SIB or downlink control information. Optionally, the downlink control information is used for scheduling a dedicated system information block SIB1.

[0101] Optionally, the at least one first information may comprise one or more bits.

[0102] S201: A network device transmits at least one first information to a first terminal device, and correspondingly, the first terminal device receives at least one first information from the network device.

[0103] Specifically, the at least one first information includes one or more bits. There is a correspondence between different bit states of the at least one first information and whether the network device allows the access of the first terminal device and / or supports the access of the first terminal device. When the network device does not support the access of the first terminal device, it can be understood that the network device does not have the capability for the access of the first terminal device. When the network device does not allow the access of the first terminal device, it can be understood that the network device has the capability for the access of the first terminal device but does not allow the access of the first terminal device. For example, for a certain cell, there are many terminal devices accessing the cell, so for load balancing, the network device does not allow the first terminal device to access the cell.

[0104] S202: Determine whether the network device supports access of the first terminal device and / or whether to allow access of the first terminal device.

[0105] Specifically, the first terminal device determines whether the network device supports access for the first terminal device and / or whether to allow access for the first terminal device based on at least one first information.

[0106] Optionally, there may be a correspondence between different bit states of the at least one first information and resource information corresponding to an access of the first terminal device to the network device. The first terminal device accesses the network device and receives information based on the corresponding resource. Optionally, the information received by the first terminal device based on the corresponding resource may be a PDSCH, a PDCCH, and / or a SIB1.

[0107] Specifically, the resource corresponding to the access of the first terminal device to the network device may be the first resource, the second resource, or the third resource. The resource information corresponding to the first terminal device may be one or more of the time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource, the second resource, or the third resource. The first resource, the second resource, and the third resource are three different resources. Optionally, the first resource is a control resource set, a random access resource, or a synchronization information resource. The first resource, the second resource, and the third resource have different resource information, and the resource information is at least one of the following: time domain location information, frequency domain location information, coding partition location information, resource index, power setting, beam resource, time domain resource offset value, frequency domain resource offset value, or code domain resource offset value.

[0108] Optionally, the first resource includes one or more resource elements in the second resource. The resource elements may be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, symbols, etc. In this case, one or more overlapping resource elements in the first resource and the second resource may be in a time division multiplexing, frequency division multiplexing, or code division multiplexing relationship. Alternatively, the first resource is different from the second resource, and the resource elements in the first resource are completely independent from the resource elements in the second resource.

[0109] Optionally, the third resource includes one or more resource elements in the second resource and / or the first resource. The resource element may be an RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, slot, minislot, symbol, etc. In this case, the third resource and one or more overlapping resource elements in the first resource and / or the second resource may be in a time division multiplexing, frequency division multiplexing, or code division multiplexing relationship. Alternatively, the third resource is different from both the first resource and the second resource, and the resource elements in the third resource are completely independent from the resource elements in the first resource or the resource elements in the second resource.

[0110] Optionally, for the first resource, the time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the first resource may be relative to the second resource or may be relative to the third resource. Similarly, the time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the second resource may be relative to the first resource or may be relative to the third resource. The time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the third resource may be relative to the second resource or may be relative to the first resource. Optionally, the resource offset value may be a preset value. For example, the resource offset value of the first resource is used as an example. The first resource is 1 / 2 the number of resources of the second resource or the third resource. n where the number of resources may be a number of RBs, a number of REs, a number of subcarriers, etc. Alternatively, the resource offset value is a fixed bandwidth, e.g., 100 MHz, 50 MHz, 25 MHz, 10 MHz, or 5 MHz. Alternatively, the resource offset value is a corresponding number of RBs, e.g., 96 RBs, 48 ​​RBs, 24 RBs, 12 RBs, or 6 RBs.

[0111] In an optional aspect, the at least one first information comprises one bit. Optionally, in the FR1 frequency band, the at least one first information is comprised in a one-bit indication field in the MIB. Alternatively, in the FR2 frequency band, the at least one first information is comprised in a one-bit indication field in the SIB1 or in the downlink control information scheduling the SIB1.

[0112] Example 1: A 1-bit indication field corresponds to two status values. There is a correspondence between the two status values ​​and whether the network device supports the first terminal device to access the first cell. For example, a status value of 0 indicates that the network device does not support the access of the first terminal device, and a status value of 1 indicates that the network device supports the access of the first terminal device. It can be understood that when the network device does not support the access of the terminal device, the network device does not have the capability for the access of the first terminal device.

[0113] Example 2: The 1-bit indication field corresponds to two status values, and there is a correspondence between the two status values ​​and whether the network device allows the first terminal device to access the first cell. For example, the status value 0 indicates that the network device does not allow the first terminal device to access the cell, and the status value 1 indicates that the network device allows the first terminal device to access the cell.

[0114] Example 3: The 1-bit indication field corresponds to two status values, and there is a correspondence between the two status values ​​and the resource information corresponding to the access of the first terminal device to the network device. In this case, the at least one first information indicates the resource information corresponding to the access of the first terminal device to the network device when the network device supports and allows the access of the first terminal device. For example, the status value 0 indicates that the first terminal device receives information based on the first resource, and the status value 1 indicates that the first terminal device receives information based on the second resource. Optionally, the at least one first information is included in the downlink control information, and the downlink control information is used to schedule the data channel carrying the system information block 1.

[0115] Further optionally, the first resource is a common PDSCH, which may be understood as a PDSCH that all terminal devices within the coverage of the network device can receive. The second resource is a dedicated PDSCH, which may be understood as a PDSCH that only terminal devices of the first type can receive. Alternatively, the first resource is a common SIB1, which may be understood as a SIB1 that all terminal devices within the coverage of the network device can receive. The second resource is a dedicated SIB1, which may be understood as a SIB1 that only terminal devices of the first type can receive. The first type of terminal device is a terminal device that has the same first characteristic as the first terminal device.

[0116] Example 4: the 1-bit indication field corresponds to two status values, a first bit status indicates that the access of the first terminal device is not supported, and a second bit status of the 1-bit indication field indicates that the access of the first terminal device is permitted and the first terminal device receives information based on the first resource. Optionally, the at least one piece of first information is included in the MIB, and the first resource is a control resource with an index of 0.

[0117] Example 5: The 1-bit indication field is information included in the master information block or the system information block 1. Further optionally, 1 bit is a cellReservedForoperatorUse field reserved for the operator, or 1 bit is a cellReservedForOtherUse field reserved for other purposes, or 1 bit is a cellReservedForFutureUse field reserved for compatibility. In this case, the at least one first information is dedicated information for a terminal device of a first type. Dedicated information can be understood as information that can only be interpreted by a terminal device of the first type. In this case, terminal devices of other types cannot interpret the dedicated information. The terminal device of the first type has the same first characteristic as the first terminal device.

[0118] In an optional aspect, the at least one first information comprises two bits. Optionally, in the FR1 frequency band, the at least one first information is comprised in a two-bit indication field in the MIB, and in the FR2 frequency band, the at least one first information is comprised in the SIB1 or a two-bit indication field in the downlink control information scheduling the SIB1. Also optionally, in the FR1 frequency band, the two bits comprise a spare bit in the MIB information and one bit in a field included in the PBCH indicating an SSB index, or the two bits comprise two bits in a field included in the PBCH indicating an SSB index.

[0119] Example 1: The correspondence between different status values ​​of the at least one first information and the indication contents may be shown in Table 2. The at least one first information includes 2 bits and corresponds to 4 status values. In this case, the different bit statuses of the at least one first information may indicate whether the network device supports the access of the first terminal device, whether the network device allows the access of the first terminal device, and resource information corresponding to the access of the first terminal device to the network device. The resource information includes one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, and beam resource. Optionally, the resource information may be information about the first resource, the second resource, or the third resource. [Table 2]

[0120] A status value of 00 indicates to the first terminal device that the network device does not support the access of the first terminal device. A status value of 01 indicates to the first terminal device that the network device supports the access of the first terminal device but does not allow the access of the first terminal device. A status value of 10 indicates to the first terminal device that the network device supports and allows the access of the first terminal device, and when the first terminal device accesses the network device, the resource information corresponding to the first terminal device is P1. A status value of 11 indicates to the first terminal device that the network device supports and allows the access of the first terminal device, and when the first terminal device accesses the network device, the resource information corresponding to the first terminal device is P2.

[0121] Optionally, P1 is one or more of the time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the first resource, and P2 is one or more of the time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the second resource.

[0122] Optionally, P1 is an offset value between the first and second resources in the time domain, frequency domain, and / or code domain, and P2 is another offset value between the first and second resources in the time domain, frequency domain, and / or code domain.

[0123] For example, P1 and P2 indicate two different offset values ​​between the first resource and the second resource in the time domain, or P1 and P2 indicate two different offset values ​​between the first resource and the second resource in the frequency domain, or P1 and P2 indicate two different offset values ​​between the first resource and the second resource in the code domain, or P1 indicates an offset value between the first resource and the second resource in the time domain and P2 indicates an offset value between the first resource and the second resource in the frequency domain and / or the code domain, or P1 indicates an offset value between the first resource and the second resource in the frequency domain and P2 indicates an offset value between the first resource and the second resource in the time domain and / or the code domain, or P1 indicates an offset value between the first resource and the second resource in the code domain and P2 indicates an offset value between the first resource and the second resource in the time domain and / or the frequency domain. It may be understood that the offset values ​​indicated by P1 and P2 may be interchanged. This is not limited here.

[0124] Example 2: The correspondence between different status values ​​of the at least one first information and the indication contents may be shown in Table 3. The at least one first information includes 2 bits and corresponds to four status values. In this case, the different status values ​​of the at least one first information may indicate whether the network device supports the access of the first terminal device, whether the network device allows the access of the first terminal device, and resource information corresponding to the access of the first terminal device to the network device. The resource information includes one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, and beam resource. Optionally, the resource information may be information about a first resource, a second resource, or a third resource. [Table 3]

[0125] The status value 00 indicates to the first terminal device that the network device does not support the access of the first terminal device. The status value 01 indicates to the first terminal device that the network device supports and allows the access of the first terminal device, and when the first terminal device accesses the network device, the resource information of the first terminal device is P1. The status value 10 indicates to the first terminal device that the network device supports and allows the access of the first terminal device, and when the first terminal device accesses the network device, the resource information of the first terminal device is P2. The status value 11 indicates to the first terminal device that the network device supports and allows the access of the first terminal device, and when the first terminal device accesses the network device, the resource information of the first terminal device is P3. P1, P2, and P3 may be three different types of resource information.

[0126] Optionally, P1 is one or more of the time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the first resource, P2 is one or more of the time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the second resource, and P3 is one or more of the time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the third resource.

[0127] Optionally, P1 is a first type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain, P2 is a second type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain, and P3 is a third type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain.

[0128] For example, P1, P2, and P3 indicate three different offset values ​​between the first resource and the second resource in the time domain; or P1, P2, and P3 indicate three different offset values ​​between the first resource and the second resource in the frequency domain; or P1, P2, and P3 indicate three different offset values ​​between the first resource and the second resource in the code domain; or P1 indicates an offset value between the first resource and the second resource in the time domain, P2 indicates an offset value between the first resource and the second resource in the frequency domain and / or the code domain, and P3 indicates an offset value between the first resource and the second resource in the time domain, the frequency domain, and / or the code domain. P1 indicates an offset value between the first resource and the second resource in the frequency domain, P2 indicates an offset value between the first resource and the second resource in the time domain and / or the code domain, and P3 indicates an offset value between the first resource and the second resource in the time domain, the frequency domain, and / or the code domain, or P1 indicates an offset value between the first resource and the second resource in the code domain, P2 indicates an offset value between the first resource and the second resource in the time domain and / or the frequency domain, and P3 indicates an offset value between the first resource and the second resource in the time domain, the frequency domain, and / or the code domain. It may be understood that the offset values ​​indicated by P1, P2, and P3 may be interchanged. This is not limited here.

[0129] Example 3: The correspondence between different status values ​​of the at least one first information and the indication contents may be shown in Table 4. The at least one first information includes 2 bits and corresponds to four status values. The different status values ​​of the at least one first information may indicate resource information corresponding to the access of the first terminal device to the network device. In this case, it can be understood that the network device supports and allows the access of the first terminal device. The resource information includes one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, and beam resource. Optionally, the resource information may be information about the first resource, the second resource, or the third resource. [Table 4]

[0130] The status value 00 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and when the first terminal device accesses the network device, the resource information of the first terminal device is P1. The status value 01 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and when the first terminal device accesses the network device, the resource information of the first terminal device is P2. The status value 10 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and when the first terminal device accesses the network device, the resource information of the first terminal device is P3. The status value 11 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and when the first terminal device accesses the network device, the resource information of the first terminal device is P4. Specifically, the resource information corresponding to the first terminal device's access to the network device is the first resource, and P1, P2, P3, and P4 may be four different types of resource information.

[0131] Optionally, P1 is one or more of time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the first resource. P2 is one or more of time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the second resource. P3 is one or more of time domain location information, frequency domain location information, code domain location information, resource index, power setting, and beam resource of the third resource. P4 is an offset value between the first resource and the second resource in the time domain, the frequency domain, and / or the code domain, or P4 is an offset value between the third resource and the second resource in the time domain, the frequency domain, and / or the code domain.

[0132] Optionally, P1 is a first type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain, P2 is a second type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain, P3 is a third type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain, and P4 is a fourth type offset value between the first and second resources in the time domain, the frequency domain, and / or the code domain.

[0133] Example 4: At least one first information includes two bits, a first bit status of the two bits indicating that the network device supports access for the first terminal device, a second bit status of the two bits indicating that the network device does not support access for the first terminal device, a third bit status of the two bits indicating that access for the first terminal device is permitted and that the first terminal device receives information based on a first resource, and a fourth bit status indicating that access for the first terminal device is permitted and that the first terminal device receives information based on a second resource.

[0134] Fig. 3 is a schematic flow chart of an access information indication method according to the present application. The method may be performed by a terminal device and a network device, or may be performed by a chip in a terminal device and a chip in a network device. The network device in Fig. 3 may be the access network device 10 in Fig. 1, and the terminal device may be the terminal device 20 in Fig. 1. The method shown in Fig. 3 may include the following operations.

[0135] S300: The network device determines at least one first piece of information.

[0136] Specifically, the at least one first information indicates at least one of a first access capability and a first access permission, where the first access capability indicates whether the network device supports access for the first terminal device, and the first access permission indicates whether the network device allows access for the first terminal device.

[0137] Optionally, the at least one first information is included in downlink control information scheduling the system information block SIB or SIB1, or the at least one first information is included in downlink control information scheduling the system information block SIB and SIB1.

[0138] Optionally, the at least one first information includes one or more bits, and the number of the one or more bits is N, where N is a positive integer.

[0139] S301: A network device transmits at least one first information to a first terminal device, and correspondingly, the first terminal device receives at least one first information from the network device.

[0140] Specifically, the at least one first information includes N bits, and there is a correspondence between different bit status values ​​of the at least one first information and whether the network device allows the first terminal device to access and / or supports the first terminal device to access.

[0141] S302: Determine whether the network device supports access of the first terminal device and / or whether to allow access of the first terminal device.

[0142] Specifically, the first terminal device determines whether the network device supports access for the first terminal device and / or whether to allow access for the first terminal device based on at least one first information.

[0143] Optionally, the different bit status values ​​of the at least one first information may further have a correspondence with resource information corresponding to the access of the first terminal device to the network device, have a correspondence with whether the network device allows the access of the second terminal device, and / or have a correspondence with resource information corresponding to the access of the second terminal device to the network device. When the network device does not allow the access of the first terminal device and / or the second terminal device, it can be understood that the network device has the capability for the access of the first terminal device and / or the second terminal device, but does not allow the access of the first terminal device and / or the second terminal device. For example, for a certain cell, there are many terminal devices accessing the cell, so for load balancing, the network device does not allow the first terminal device and / or the second terminal device to access the cell. When accessing the network device, the first terminal device and the second terminal device receive information based on the resource indicated by the at least one first information. The information received based on the resource indicated by the at least one first information may be PDSCH, PDCCH, and / or SIB1.

[0144] Specifically, the first terminal device and the second terminal device having different first characteristics may also be understood as the first terminal device and the second terminal device belonging to different device types. The first characteristics include one or more of the following: Bandwidth, number of resources supported or configured, number of transmit antenna ports and / or number of receive antenna ports, number of radio frequency channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rates, application scenarios, delay requirements, processing capabilities, protocol releases, duplexing schemes, services, etc. The following describes the first feature in detail.

[0145] Bandwidth, or channel bandwidth, is the bandwidth supported or configured by a terminal device. The bandwidth of a first terminal device is different from that of a second terminal device. For example, the bandwidth of the first terminal device is 20M, and the bandwidth of the second terminal device is 100M.

[0146] The number of resources supported or configured may be the number of RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols. The number of resources supported or configured by the first terminal device is different from that of the second terminal device. For example, the number of resources supported by the first terminal device is 48 RBs, and the number of resources supported by the second terminal device is 96 RBs.

[0147] The number of transmitting antenna ports and / or the number of receiving antenna ports particularly means that the number of transmitting antenna ports and / or the number of receiving antenna ports of the first terminal device is different from that / those of the second terminal device, for example, the number of transmitting antenna ports of the first terminal device is 1, the number of receiving antenna ports of the first terminal device is 2, the number of transmitting antenna ports of the second terminal device is 2, and the number of receiving antenna ports of the second terminal device is 4.

[0148] The number of radio frequency channels specifically means that the number of radio frequency channels of the first terminal device is different from that of the second terminal device, for example, the number of radio frequency channels of the first terminal device is 1, and the number of radio frequency channels of the second terminal device is 2.

[0149] The number of HARQ processes specifically means that the number of HARQ processes supported by the first terminal device is different from that supported by the second terminal device, for example, the number of HARQ processes supported by the first terminal device is 8, and the number of HARQ processes supported by the second terminal device is 6.

[0150] The supported peak rate specifically means that the maximum peak rate of the first terminal device is different from that of the second terminal device, for example, the maximum peak rate supported by the first terminal device is 100 Mbps, and the maximum peak rate supported by the second terminal device is 200 Mbps.

[0151] The application scenario specifically means that the first terminal device and the second terminal device provide different application scenarios, for example, the first terminal device is applied to industrial wireless sensing, video surveillance, wearable devices, etc., and the second terminal device is applied to mobile communications, video Internet access, etc.

[0152] The delay requirement specifically means that the first terminal device and the second terminal device have different transmission delay requirements, for example, the delay requirement of the first terminal device is 500 ms and the delay requirement of the second terminal device is 100 ms.

[0153] The processing capability specifically means that the first terminal device and the second terminal device have different channel or data processing time series and processing speed under different subcarrier space (SCS) conditions. For example, the first terminal device does not support complex operations, and the complex operations may include artificial intelligence (AI) and virtual reality (VR) rendering. The second terminal device supports complex operations. It is understood that the processing capability of the first terminal device is lower than that of the second terminal device.

[0154] The protocol release specifically means that the first terminal device and the second terminal device are terminal devices of different protocol releases, for example, the protocol release supported by the first terminal device is Release 17, and the protocol release supported by the second terminal device is Release 15.

[0155] The duplex mode includes half-duplex and full-duplex, for example, the first terminal device operates in half-duplex mode, and the second terminal device operates in full-duplex mode.

[0156] The services include, but are not limited to, Internet of Things applications such as video surveillance and mobile broadband MBB, for example, a service supported by a first terminal device is video surveillance and a service supported by a second terminal device is mobile broadband MBB.

[0157] Specifically, the resource corresponding to the first terminal device may be the first resource, the second resource, or the third resource. The resource information corresponding to the first terminal device may be one or more of the time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource, the second resource, or the third resource. The resource corresponding to the second terminal device may be the first resource, the second resource, or the third resource. The resource information corresponding to the second terminal device may be one or more of the time domain location information, frequency domain location, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, or beam resource of the first resource, the second resource, or the third resource. The first resource, the second resource, and the third resource are three different resources. Optionally, the first resource is a control resource set, a random access resource, or a synchronization information resource. The second resource has different time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset value, frequency domain resource offset value, code domain resource offset value, power setting, or beam resource from those of the first resource. Optionally, the first resource includes one or more resource elements in the second resource. The resource element may be an RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, slot, minislot, symbol, etc. In this case, one or more overlapping resource elements in the first resource and the second resource may be in a time division multiplexing, frequency division multiplexing, or code division multiplexing relationship. Alternatively, the first resource is different from the second resource, and the resource elements in the first resource are completely independent from the resource elements in the second resource.

[0158] Optionally, the third resource includes one or more resource elements in the second resource and / or the first resource. The resource elements may be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols, etc. In this case, one or more overlapping resource elements between the third resource and the first resource and / or the second resource may be in a time division multiplexing, frequency division multiplexing, or code division multiplexing relationship. Alternatively, the third resource is different from both the first resource and the second resource, and the resource elements in the third resource are completely independent from the resource elements in the first resource or the resource elements in the second resource.

[0159] Optionally, for the first resource, the time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the first resource may be relative to the second resource or may be relative to the third resource. Similarly, the time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the second resource may be relative to the first resource or may be relative to the third resource. The time domain resource offset, frequency domain resource offset, and / or code domain resource offset of the third resource may be relative to the second resource or may be relative to the first resource. Optionally, the resource offset value may be a preset value. For example, the resource offset value of the first resource is used as an example. The first resource is 1 / 2 the number of resources of the second resource or the third resource. n where the number of resources may be a number of RBs, a number of REs, a number of subcarriers, etc. Alternatively, the resource offset value is a fixed bandwidth, e.g., 100 MHz, 50 MHz, 25 MHz, 10 MHz, or 5 MHz. Alternatively, the resource offset value is a corresponding number of RBs, e.g., 96 RBs, 48 ​​RBs, 24 RBs, 12 RBs, or 6 RBs.

[0160] In the following example, R1 represents the resource information of the first resource, R2 represents the resource information of the second resource, R3 represents the resource information of the third resource, and N represents that access is not allowed, for detailed description. Specifically, the resource information may include one or more of time domain location information, frequency domain location information, code domain location information, resource index, time domain resource offset, frequency domain resource offset, code domain resource offset, power setting, and beam resource. The following table is only an example. The relationship between different bit statuses of at least one first information and the indication content may be expressed in words or may be expressed in a table. This is not limited in the present application.

[0161] Example 1: The at least one first information includes 3 bits, and different status values ​​of the at least one first information correspond to different indication contents. Optionally, the 3 bits are a field in SIB1, or the 3 bits include a 1-bit field in SIB1 and 2 bits in downlink control information that schedules SIB1. The correspondence between the different status values ​​of the at least one first information and the indication contents may be shown in Table 5. [Table 5]

[0162] For example, the content corresponding to one state of the three bits is to allow the first terminal device to access according to R1 and allow the second terminal device to access according to R2, and the state may correspond to a state value of 000. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access according to R1 and allow the second terminal device to access according to R3, and the state may correspond to a state value of 001. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access according to R2 and allow the second terminal device to access according to R3, and the state may correspond to a state value of 010. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access according to R3 and allow the second terminal device to access according to R3, and the state may correspond to a state value of 011. For example, the content corresponding to one state of the three bits is to not allow the first terminal device to access and allow the second terminal device to access according to R3, and the state may correspond to a state value of 100. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R1 and not allow the second terminal device to access, and the state may correspond to a state value of 101. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R2 and not allow the second terminal device to access, and the state may correspond to a state value of 110. For example, the content corresponding to one state of the three bits is to not allow the first terminal device to access and allow the second terminal device to access based on R1, and the state may correspond to a state value of 111.

[0163] Example 2: The at least one first information includes 3 bits, and different status values ​​of the at least one first information correspond to different indication contents. Optionally, the 3 bits are a field in SIB1, or the 3 bits are a field in downlink control information scheduling SIB1. The correspondence between the different status values ​​of the at least one first information and the indication contents may be shown in Table 6. [Table 6]

[0164] For example, the content corresponding to one state of the three bits is to not allow the first terminal device to access and not allow the second terminal device to access, and the state may correspond to a state value of 000. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R1 and allow the second terminal device to access based on R3, and the state may correspond to a state value of 001. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R2 and allow the second terminal device to access based on R3, and the state may correspond to a state value of 010. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R3 and allow the second terminal device to access based on R3, and the state may correspond to a state value of 011. For example, the content corresponding to one state of the three bits is to not allow the first terminal device to access and allow the second terminal device to access based on R3, and the state may correspond to a state value of 100. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R1 and not allow the second terminal device to access, and the state may correspond to a state value of 101. For example, the content corresponding to one state of the three bits is to allow the first terminal device to access based on R2 and not allow the second terminal device to access, and the state may correspond to a state value of 110. For example, the content corresponding to one state of the three bits is to not allow the first terminal device to access and allow the second terminal device to access based on R1, and the state may correspond to a state value of 111.

[0165] Example 3: The at least one first information includes two bits, and different status values ​​of the two bits correspond to different indications. Optionally, the two bits are a field in SIB1, or the two bits include one bit in SIB1 and one bit in downlink control information that schedules SIB1. The correspondence between the different status values ​​of the at least one first information and the indications may be shown in Table 7. [Table 7]

[0166] For example, the content corresponding to one state of the two bits is to allow the first terminal device to access according to R3, and allow the second terminal device to access according to R3, and the state may correspond to a state value of 00. For example, the content corresponding to one state of the two bits is to allow the first terminal device to access according to R1, and not allow the second terminal device to access, and the state may correspond to a state value of 01. For example, the content corresponding to one state of the two bits is to not allow the first terminal device to access, and allow the second terminal device to access according to R3, and the state may correspond to a state value of 10. For example, the content corresponding to one state of the two bits is to allow the first terminal device to access according to R2, and allow the second terminal device to access according to R3, and the state may correspond to a state value of 11.

[0167] Example 4: At least one first information includes two bits, and different status values ​​of the two bits correspond to different instruction contents. Optionally, the two bits are fields in SIB1, or the two bits are fields in downlink control information for scheduling SIB1. For example, the contents corresponding to one state of the two bits are not allowing access of the first terminal device and not allowing access of the second terminal device, and the state may then correspond to a state value of 00. For example, the contents corresponding to one state of the two bits are allowing access of the first terminal device based on R1 and not allowing access of the second terminal device, and the state may then correspond to a state value of 01. For example, the contents corresponding to one state of the two bits are not allowing access of the first terminal device and allowing access of the second terminal device based on R1, and the state may then correspond to a state value of 10. For example, the contents corresponding to one state of the two bits are allowing access of the first terminal device based on R2 and allowing access of the second terminal device based on R3, and the state may then correspond to a state value of 11. The correspondence may be expressed in a table. The correspondence between different status values ​​of the at least one first information and the indication contents may be shown in Table 8. [Table 8]

[0168] Example 5: The at least one first information includes two bits, and different status values ​​of the two bits correspond to different indications. Optionally, the two bits are a field in SIB1, or the two bits are a field in downlink control information for scheduling SIB1. The correspondence between the different status values ​​of the at least one first information and the indications may be shown in Table 9. [Table 9]

[0169] For example, the content corresponding to one state of the two bits is to not allow the first terminal device to access and not allow the second terminal device to access, and the state may correspond to a state value of 00. For example, the content corresponding to one state of the two bits is to allow the first terminal device to access based on R1 and not allow the second terminal device to access, and the state may correspond to a state value of 01. For example, the content corresponding to one state of the two bits is to not allow the first terminal device to access and allow the second terminal device to access based on R1, and the state may correspond to a state value of 10. For example, the content corresponding to one state of the two bits is to allow the first terminal device to access based on R1 and allow the second terminal device to access based on R1, and the state may correspond to a state value of 11.

[0170] Figure 4 is a schematic flow chart of an access information indication method according to the present application. The method may be performed by a terminal device and a network device, or may be performed by a chip in a terminal device and a chip in a network device. The network device in Figure 4 may be the access network device 10 in Figure 1, and the terminal device may be the terminal device 20 in Figure 1. The method shown in Figure 4 may include the following operations.

[0171] S400: The network device determines at least one first piece of information.

[0172] Specifically, the at least one first information indicates a first access permission, the first access permission indicates whether the network device allows the first terminal device to access, and optionally, the at least one first information further indicates whether the network device allows the first terminal device to access within a preset time range.

[0173] The at least one first information is included in a downlink control information DCI for scheduling SIB1, where the DCI indicates a modulation and coding scheme MCS. Specifically, the format of the DCI is 1-0, and the at least one first information includes N bits. Optionally, the N bits include at least one bit in a first field of the DCI and / or at least one bit of the 5 bits indicating an MCS index value.

[0174] S401: A network device transmits at least one first information to a first terminal device, and correspondingly, the first terminal device receives at least one first information from the network device.

[0175] Specifically, the different status values ​​of the at least one first information may indicate whether the network device allows the first terminal device to access and / or whether the network device allows the first terminal device to access within a preset time range. The different status values ​​of the first information may correspond to different preset time ranges. The unit of the preset time range may be seconds, minutes, slots, radio frames, subframes, symbols, etc. Optionally, the duration indicated by the preset time range is different from 300 seconds. For example, the preset time range is 300×N seconds, where N is an integer equal to or greater than 2.

[0176] S402: Determine whether the network device allows the first terminal device to access and / or whether the network device allows the first terminal device to access within a preset time range.

[0177] Specifically, the first terminal device determines, based on at least one first information, whether the network device will allow access for the first terminal device and / or whether to allow access for the first terminal device within a preset time range.

[0178] Example 1: An indication field carrying at least one first information is one bit among 15 bits (17 bits) of the operation for the spectrum access channel in the cell, and corresponds to two status values. In this case, the two statuses of the at least one first information respectively indicate that the network device allows the first terminal device to access, or that the network device does not allow the first terminal device to access. For example, the status value 0 indicates that the network device allows the first terminal device to access, and the status value 1 indicates that the network device does not allow the first terminal device to access. The contents indicated by the status value 0 and the status value 1 may be interchanged. This is not limited here.

[0179] Example 2: The indication field carrying the at least one first information is 2 bits out of 15 bits (17 bits) of the operation for the spectrum access channel in the cell, and corresponds to four status values. [Table 10]

[0180] In Table 10, T1 and T2 are two different pre-set time ranges, N indicates that access is not allowed, and Y indicates that access is allowed. A status value of 00 indicates to the first terminal device that the network device does not allow access for the first terminal device. A status value of 01 indicates to the first terminal device that the network device does not allow access for the first terminal device within T1. A status value of 10 indicates to the first terminal device that the network device does not allow access for the first terminal device within T2. ​​A status value of 11 indicates to the first terminal device that the network device allows access for the first terminal device.

[0181] Example 3: The indication field carrying the at least one first information is 2 bits out of 15 bits (17 bits) of the operation for the spectrum access channel in the cell, and corresponds to four status values. [Table 11]

[0182] The status value 00 indicates to the first terminal device that the network device does not allow the first terminal device to access within the first time range. The status value 01 indicates to the first terminal device that the network device does not allow the first terminal device to access within the second time range. The status value 10 indicates to the first terminal device that the network device does not allow the first terminal device to access within the third time range. The status value 11 indicates to the first terminal device that the network device allows the first terminal device to access. The first time range, the second time range, and the third time range may be three time ranges preset by the network device. For the time ranges preset by the network device, when the duration of the time range set by the network device is positive infinity, the network device may also be understood to not allow the first terminal device to access. For example, when any of the preset time ranges T1, T2, or T3 is positive infinity, the network device may also be understood to not allow the first terminal device to access.

[0183] Example 4: The indication field carrying at least one first information is two bits, including one bit in the indication field of one of 15 bits (17 bits) of an operation for a spectrum access channel in a cell, and one most significant bit of one of 5 bits indicating an MCS index value.

[0184] Optionally, one most significant bit of the five bits indicating the MCS index value is used as a flag of the downlink control information specific to the device type corresponding to the first terminal device. When the most significant bit of the five-bit field indicating the MCS index value is 1, the terminal device of the device type to which the non-first terminal device belongs cannot decode the downlink control information. Furthermore, one bit in one indication field of the 15 bits (17 bits) of the operation for the spectrum access channel in the cell indicates whether the network device allows the access of the first terminal device and / or whether the network device allows the access of the first terminal device within a preset time range. In this case, the network device collectively indicates whether the network device allows the access of the first terminal device, whether the network device allows the access of the second terminal device, and / or whether the network device allows the access of the first terminal device within a preset time range by using one most significant bit indicating the MCS index value and one bit of the 15 bits (17 bits) of the operation for the spectrum access channel in the cell. The first terminal device and the second terminal device having different first characteristics may also be understood as the first terminal device and the second terminal device belonging to different device types. The first characteristics include one or more of the number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, the latency requirement, and the processing capability. The number of resources may be the number of RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols. For a detailed description of the first characteristics, please refer to the relevant description of step S301 in FIG. 3. The details will not be described again here. Optionally, the first terminal device belongs to a first type of terminal device with reduced capabilities. The second terminal device is a conventional terminal device.The capabilities of the conventional terminal device are greater than those of the first type of terminal device, which has reduced capabilities. [Table 12]

[0185] In the example of Table 12, T1 and T2 are two different pre-set time ranges. N indicates that access is not allowed, and Y indicates that access is allowed. For the 2-bit field carrying at least one first information, one most significant bit in the 2-bit field is one most significant bit in the 5-bit field indicating the indicated MCS index value. One least significant bit in the 2-bit field is one bit of the 15 bits (17 bits) of operation for the spectrum access channel in the cell. When the status value of the most significant bit is 1, it indicates that the second terminal device cannot access the network device. When the status value of the most significant bit is 0, the second terminal device can access the network device. When the status value of the least significant bit is 1, the first terminal device is allowed to access the network device. When the status value of the least significant bit is 0, the first terminal device is not allowed to access the network device within the pre-set time range.

[0186] Example 5: In the 5-bit field indicating the MCS index value, when the most significant bit is 1, it indicates that the corresponding DCI is a PDCCH specific to the terminal device of the type corresponding to the first terminal device. In this case, the second terminal device cannot access the network device. The type and / or content of SI information other than SIB1 indicated by the DCI is different from the type and / or content of SI information of the second terminal device. When the most significant bit is 0, the second terminal device can access the network device. Furthermore, optionally, at least one of 23 status values ​​from status 01010 to 11111 of the 5-bit field indicating the MCS index value indicates whether the network device allows the access of the first terminal device and / or whether the network device allows the access of the first terminal device within a preset time range.

[0187] Specifically, when the most significant bit of the 5-bit field indicating the MCS index value is 1, the second terminal device cannot perform access. When the most significant bit of the 5-bit field indicating the MCS index value is 0, the second terminal device can perform access. Furthermore, any one or more bits of the second most significant bit, the third most significant bit, the fourth most significant bit, and the least significant bit, excluding the most significant bit, may be used together with the most significant bit 1 to indicate whether the network device allows the first terminal device to access, whether the network device allows the second terminal device to access, and / or whether the first terminal device's access is allowed within a preset time range. [Table 13]

[0188] In the example of Table 13, T1 and T2 are two different preset time ranges. N indicates that access is not allowed, and Y indicates that access is allowed. Since the most significant bit of the 5-bit field indicating the MCS index value is 1, it can be understood that the at least one first information in this case indicates that the network device does not allow the second terminal device to access. It can also be understood that one most significant bit and two least significant bits in the 5-bit field indicating the MCS index value collectively indicate whether the network device allows the second terminal device to access, whether the network device allows the first terminal device to access, and whether the network device allows the first terminal device to access within the preset time range. Table 13 simply shows an example in which four of the 16 status values ​​from status 10000 to 11111 indicate whether the network device allows the first terminal device to access and / or whether the network device allows the first terminal device to access within the preset time range.

[0189] Figure 5 is a schematic flow chart of an access information indication method according to the present application. The method may be performed by a terminal device and a network device, or may be performed by a chip in a terminal device and a chip in a network device. The network device in Figure 5 may be the access network device 10 in Figure 1, and the terminal device may be the terminal device 20 in Figure 1. The method shown in Figure 5 may include the following operations.

[0190] S500: The network device determines at least one first piece of information.

[0191] Specifically, the at least one first information indicates whether the network device allows the first terminal device to access.

[0192] When there are multiple types of terminal devices in the cell to which the first terminal device belongs, the network device may set the first information to indicate whether to allow access of one or more types of terminal devices. The at least one first information is included in SIB1. Optionally, the at least one first information is included in N bits in a field indicating a corresponding access identity in the unified access control, where N is a positive integer. The N bits may indicate whether the network device allows access of the N terminal devices. Each of the N terminal devices has a different first characteristic. The first characteristic includes one or more of the number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, the latency requirement, and the processing capability. The number of resources may be the number of RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, slots, minislots, and / or symbols. For a detailed description of the first characteristic, please refer to the related description of step S301 in FIG. 3. The details will not be described again here.

[0193] S501: A network device transmits at least one first information to a first terminal device, and correspondingly, the first terminal device receives at least one first information from the network device.

[0194] Specifically, the first terminal device receives at least one first information, and the first terminal device determines whether to access the network device.

[0195] Example 1: The N bit is 1 bit, which indicates whether the network device allows the first terminal device to access.

[0196] Example 2: The N bits are two bits, and the two bits indicate whether the network device allows access of a first terminal device and a second terminal device. The first terminal device and the second terminal device have different first characteristics. Furthermore, the first terminal device is a first type terminal device with reduced capabilities. The second terminal device is a second type terminal device with reduced capabilities.

[0197] S502: The network device determines whether to allow access of the first terminal device.

[0198] Specifically, the first terminal device determines whether the network device allows the first terminal device to access based on at least one first information.

[0199] It should be noted that the resources mentioned in the present application may include time domain and frequency domain resources of a synchronization channel, a control resource set, a random access resource, a PDSCH, and / or a PDCCH. Specifically, when at least one first information is included in the MIB, the resources of the present application may include time domain and frequency domain resources of a synchronization channel, and / or a control resource set. When at least one first information is included in the SIB, the resources of the present application may include a random access resource. When at least one first information is included in the downlink control information scheduling SIB1, the resources of the present application may be SIB1 or a PDSCH corresponding to SIB1. When one first information of the at least one first information is included in the MIB and the other first information is included in SIB1, the resources of the present application may include a random access resource. When one first information of the at least one first information is included in the MIB and the other first information is included in the downlink control information scheduling SIB1, the resources of the present application may be SIB1 or a PDSCH corresponding to SIB1.

[0200] In the above embodiments provided in the present application, the method provided in the embodiments of the present application is described separately from the starting point of the network device, the terminal device, and the interaction between the network device and the terminal device. To implement the functions of the methods provided in the embodiments of the present application, the network device and the terminal device may each include a hardware structure and / or a software module, so as to implement the above functions in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module. Whether a function among the above functions is performed by using a hardware structure, a software module, or a combination of a hardware structure and a software module depends on the specific application and design constraints of the technical solution.

[0201] Fig. 6 is a schematic diagram of a possible structure of a communication device according to the present application. The communication device shown in Fig. 6 may implement the functions of the terminal device or network device in the above method. Thus, the advantageous effects of the above method embodiments may also be implemented. In the present application, the device may be the network device 10 shown in Fig. 1, may be the terminal device 20, or may be a module or unit of the terminal device or network device.

[0202] As shown in Fig. 6, the communication device 1000 includes a transceiver unit 1100 and a processing unit 1200. The communication device 1000 is configured to implement functions of a terminal device or a network device in the method embodiments shown in Figs. 2 to 5.

[0203] 2 to 5, the transceiver unit 1100 is configured to transmit at least one first information, e.g., perform steps S201, S301, S401, and S501, and / or perform other processes of the techniques described herein. The processing unit 1200 is configured to determine the at least one first information, e.g., perform steps S200, S300, S400, and S500, and / or perform other processes of the techniques described herein.

[0204] When the communication device 1000 is configured to implement the functions of the terminal device in the embodiments shown in Figures 2 to 5, the transceiver unit is configured to receive at least one first information, e.g., to perform steps S201, S301, S401, and S501, and / or to perform other processes of the techniques described herein. The processing unit 1200 is configured to process the at least one first information, e.g., to perform steps S202, S302, S402, and S502, and / or to perform other processes of the techniques described herein.

[0205] In this specification, terms such as "first" and "second" are used solely for distinction and explanation and are not to be understood as indicating or implying relative importance or as indicating or implying order. "At least one" means one or more and "plurality" means two or more. The term "and / or" describes an association relationship between related objects and indicates that three relationships may exist. For example, A and / or B may indicate that only A is present, both A and B are present, and only B is present. A and B may be singular or plural. The character " / " generally indicates a "disjunction" relationship between related objects. "At least one of the following items" or similar expressions means any combination of those items, including any combination of a single item or multiple items. For example, at least one item (element) of a, b, or c can represent a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, and c may be singular or plural.

[0206] 7 is a schematic diagram of a structure of a network device according to an embodiment of the present application, for example, a schematic diagram of a structure of a base station. The base station 2000 may be applied to the system shown in FIG. 1 to implement the functions of the network device in the above method embodiment. As shown, the base station 2000 may include one or more radio frequency units, such as a remote radio unit (RRU) 2100 and one or more baseband units (BBUs) (also referred to as distributed units (DUs)) 2200. The RRU 2100 may also be referred to as a transceiver unit or a communication unit, and corresponds to the transceiver unit 1100 in FIG. 6. Optionally, the transceiver unit 1100 may also be referred to as a transceiver, a transceiver circuit, etc., and may include at least one antenna 2101 and a radio frequency unit 2102. Optionally, the transceiver unit 2100 may include a receiving unit and a transmitting unit. The receiving unit may correspond to a receiver (or referred to as a receiver or a receiver circuit), and the transmitting unit may correspond to a transmitter (or referred to as a transmitter or a transmitter circuit). The RRU 2100 is mainly configured to transmit and receive radio frequency signals, and perform conversion between radio frequency signals and baseband signals. The BBU 2200 is mainly configured to perform baseband processing, control the base station, etc. The RRU 2100 and the BBU 2200 may be physically co-located or physically separated. In other words, the base station is a distributed base station.

[0207] The BBU 2200 is a control center of the base station and may also be called a processing unit. The BBU 2200 may correspond to the processing unit 1200 of Fig. 6 and is mainly configured to perform baseband processing functions, such as channel coding, multiplexing, modification, or spreading. For example, the BBU (processing unit) may be configured to control the base station to execute operation procedures related to the network device in the above method embodiments.

[0208] In one example, the BBU 2200 may include one or more boards, which may jointly support a radio access network having a single access standard (e.g., an LTE network) or separately support radio access networks having different access standards (e.g., an LTE network, a 5G network, or other networks). The BBU 2200 further includes a memory 2201 and a processor 2202. The memory 2201 is configured to store necessary instructions and data. The processor 2202 is configured to control the base station to perform necessary operations, for example, to control the base station to perform operation procedures related to the network device in the above method embodiment. The memory 2201 and the processor 2202 can serve one or more boards. In other words, the memory and the processor may be located on each board. Alternatively, the multiple boards may share the same memory and the same processor. Furthermore, necessary circuits may be further located on each board.

[0209] It should be understood that the base station 2000 shown in Fig. 7 can implement each process related to the network device in the above method embodiment. The operation or function of the module of the base station 2000 is used separately to implement the corresponding procedure in the above method embodiment. For details, please refer to the description of the above method embodiment. The details will not be described again here.

[0210] The BBU2200 may be configured to perform operations implemented in the network device and described in the above method embodiments. The RRU2100 may be configured to perform operations of reception or transmission performed by the network device to / from the terminal device and described in the above method embodiments. For details, please refer to the descriptions of the above method embodiments. Details will not be described again here.

[0211] 8 is a schematic diagram of a terminal device 3000 according to an embodiment of the present application. As shown, the terminal device 3000 includes a processor 3001 and a transceiver 3002. Optionally, the terminal device 3000 may further include a memory 3003. The processor 3001, the transceiver 3002, and the memory 3003 can communicate with each other through an internal connection path and transfer control signals and / or data signals. The memory 3003 is configured to store a computer program. The processor 3001 is configured to call the computer program from the memory 3003, execute the computer program, and control the transceiver 3002 to receive and transmit signals.

[0212] The processor 3001 and the memory 3003 may be integrated into one processing unit 3004. The processor 3001 is configured to execute the program code stored in the memory 3003 to implement the above functions. It should be understood that the processing unit 3004 shown in FIG. 8 is only an example. In a specific implementation, the memory 3003 may alternatively be integrated into the processor 3001, or may be separate from the processor 3001. This is not limited in the present application.

[0213] The terminal device 3000 may further include an antenna 3010 configured to transmit uplink data or uplink control signaling output by the transceiver 3002 by using wireless signals.

[0214] It should be understood that the terminal device 3000 shown in Fig. 8 can implement each process related to the terminal device in the above method embodiment. The operation or function of the module in the terminal device 3000 is respectively intended to implement the corresponding procedure in the above method embodiment. For details, please refer to the description of the above method embodiment. The details will not be described again here.

[0215] Optionally, the terminal device 3000 may further include a power supply 3005 configured to provide power to various components or circuits within the terminal device.

[0216] Further, to improve the functionality of the terminal device, the terminal device 3000 may further include one or more of an input unit 3006, a display unit 3007, an audio circuit 3008, a camera 3009, a sensor 3008, etc. The audio circuit may further include a speaker 30081, a microphone 30082, etc.

[0217] It should be understood that the processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), other programmable logic devices, discrete gates, transistor logic devices, or discrete hardware components, or may be a system on chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD) or other integrated chip, which may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the method disclosed with reference to the embodiments of the present application may be directly performed and achieved by a hardware decoding processor, or may be performed and achieved by using a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register.The storage medium is located in the memory, and the processor accesses the information in the memory and completes the steps of the above-mentioned method in combination with the processor's hardware.

[0218] The embodiments of the present application further provide a communication system including at least one access network device and at least one communication apparatus for implementing the above embodiments of the present application.

[0219] Optionally, the present application provides a chip system. The chip system is configured to support the implementation of the access method provided herein, for example, the access method shown in FIG. 2 to FIG. 5. The chip system includes at least one processor and an interface circuit. The interface circuit is configured to provide input or output of instructions and / or data for the at least one processor. When the at least one processor executes the instructions, the chip system is configured to implement the function of a network device or a terminal device in the access method provided herein. In a possible design, the chip system further includes a memory. The memory is configured to store program instructions and data required for the network device. Of course, alternatively, the memory may not be in the chip system. The chip system may include a chip, or may include a chip and other discrete components. This is not particularly limited in this embodiment of the present application.

[0220] 9 shows an example of a chip system according to the present application. The chip system 900 includes a processor 901 and an interface circuit 902. Optionally, the processor 901 and the interface circuit 902 may be connected by a bus 903.

[0221] It should be understood that the references "in an embodiment," "one embodiment," or "in this embodiment of the present application" throughout the specification mean that a particular feature, structure, or characteristic associated with an embodiment is included in at least one embodiment of the present application. Thus, the appearances of "in an embodiment," "in one embodiment," or "in this embodiment of the present application" throughout the specification are not all referring to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in one or more embodiments by using any suitable manner.

[0222] It should be understood that the sequence numbers of the above processes do not mean the order of execution in various embodiments of the present application. The order of execution of the processes should be determined according to the functions and internal logic of the processes, and should not be construed as any restriction on the implementation process of the embodiments of the present application.

[0223] The objectives, technical solutions and advantageous effects of the present application are further described in detail in the above specific embodiments. It should be understood that the above description is merely a specific embodiment of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, or improvement made based on the technical solutions of the present application should fall within the protection scope of the present application.

[0224] The above description is merely a specific implementation of the present application, and is not intended to limit the scope of protection of the present application. Any variations or replacements that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should fall within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. 1. A method of accessing a computer-readable medium, comprising: receiving at least one first information, the at least one first information indicating a first access grant, the first access grant indicating whether access of a first type of reduced capability terminal device is permitted; The at least one first information has one or more bits, and the different bit states of the at least one first information include: said first type of reduced capability terminal device is not allowed access; receiving information based on a first resource by the reduced capability terminal device of the first type in response to the reduced capability terminal device being granted access; or receiving information based on a second resource by the first type of reduced capability terminal device in response to the first type of reduced capability terminal device being granted access; indicates, the first resource and the second resource are different resources. method.

2. at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, a resource index, a time domain resource offset, a frequency domain resource offset, a code domain resource offset, a power setting, or a beam resource of the first resource or the second resource; The method of claim 1.

3. The first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource is a control resource set, a random access resource, or a synchronization information resource. The method according to claim 1 or 2.

4. The first resource and the second resource have different resource information, and the resource information is at least one of the following: time domain location information, frequency domain location information, code domain location information, a resource index, a power setting, a beam resource, a time domain resource offset value, a frequency domain resource offset value, or a code domain resource offset value. The method according to claim 3.

5. the at least one first information further indicates whether access of a second type of reduced capability terminal device is permitted.

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

6. The different bit states of the at least one first information include: said second type of reduced capability terminal device is not allowed access; in response to the second type of reduced capability terminal device being granted access, the second type of reduced capability terminal device receiving information based on the first resource; or receiving information based on the second resource by the reduced capability terminal device of the second type in response to the reduced capability terminal device being granted access; Showing, The method according to claim 5.

7. the at least one first information further indicates a first access capability, the first access capability indicating whether access of the first type of reduced-capability terminal device or a second type of reduced-capability terminal device is supported; 7. The method according to any one of claims 1 to 6.

8. The second type of reduced-capability terminal device and the first type of reduced-capability terminal device have different first characteristics, the first characteristics being: The number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of HARQ processes, the supported peak rates, the application scenario, the latency requirements, or the processing capabilities. having one or more of:

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

9. the number of radio frequency channels of the first type of reduced-capability terminal device is 1, and the number of radio frequency channels of the second type of reduced-capability terminal device is 2; 9. The method according to any one of claims 5 to 8.

10. The at least one first information is included in a system information block (SIB).

10. The method of claim 9.

11. 1. A method of accessing a computer-readable medium, comprising: transmitting at least one first information, the at least one first information indicating a first access grant, the first access grant indicating whether access of a first type of reduced capability terminal device is permitted; The at least one first information has one or more bits, and the different bit states of the at least one first information include: said first type of reduced capability terminal device is not allowed access; receiving information based on a first resource by the reduced capability terminal device of the first type in response to the reduced capability terminal device being granted access; or receiving information based on a second resource by the first type of reduced capability terminal device in response to the first type of reduced capability terminal device being granted access; indicates, the first resource and the second resource are different resources. method.

12. at least one bit state of the at least one first information indicates one or more of time domain location information, frequency domain location information, code domain location information, a resource index, a time domain resource offset, a frequency domain resource offset, a code domain resource offset, a power setting, or a beam resource of the first resource or the second resource; The method of claim 11.

13. The first resource is a control resource set, a random access resource, or a synchronization information resource, and the second resource is a control resource set, a random access resource, or a synchronization information resource.

13. The method according to claim 11 or 12.

14. The first resource and the second resource have different resource information, and the resource information is at least one of the following: time domain location information, frequency domain location information, code domain location information, a resource index, a power setting, a beam resource, a time domain resource offset value, a frequency domain resource offset value, or a code domain resource offset value. The method of claim 13.

15. the at least one first information further indicates whether access of a second type of reduced capability terminal device is permitted.

15. The method according to any one of claims 11 to 14.

16. The different bit states of the at least one first information include: said second type of reduced capability terminal device is not allowed access; in response to the second type of reduced capability terminal device being granted access, the second type of reduced capability terminal device receiving information based on the first resource; or receiving information based on the second resource by the reduced capability terminal device of the second type in response to the reduced capability terminal device being granted access; Showing, The method of claim 15.

17. the at least one first information further indicates a first access capability, the first access capability indicating whether access of the first type of reduced-capability terminal device or a second type of reduced-capability terminal device is supported; 17. A method according to any one of claims 11 to 16.

18. The second type of reduced-capability terminal device and the first type of reduced-capability terminal device have different first characteristics, the first characteristics being: The number of resources supported or configured by the terminal device, the number of transmit antenna ports and / or the number of receive antenna ports, the number of HARQ processes, the supported peak rates, the application scenario, the latency requirements, or the processing capabilities. having one or more of:

18. The method according to any one of claims 15 to 17.

19. the number of radio frequency channels of the first type of reduced-capability terminal device is 1, and the number of radio frequency channels of the second type of reduced-capability terminal device is 2; 19. The method according to any one of claims 15 to 18.

20. The at least one first information is included in a system information block (SIB).

20. The method of claim 19.

21. 1. A communications device having at least one processor and an interface circuit, the interface circuitry is configured to provide input or output of instructions and / or data to the at least one processor; When said at least one processor executes said instructions, the communication device is capable of performing a method according to any one of claims 1 to 10. Communications equipment.

22. 1. A communications device having at least one processor and an interface circuit, the interface circuitry is configured to provide input or output of instructions and / or data to the at least one processor; When said at least one processor executes said instructions, the communication device is capable of performing a method according to any one of claims 11 to 20. Communications equipment.

23. having a program or instructions; The method according to any one of claims 1 to 10 is carried out when the program or the instructions are executed on a computer. A computer-readable storage medium.

24. having a program or instructions; The method according to any one of claims 11 to 20 is carried out when the program or the instructions are executed on a computer. A computer-readable storage medium.

25. A communication device arranged to carry out the method according to any one of claims 1 to 10.

26. A communication device arranged to carry out a method according to any one of claims 11 to 20.

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