A method, apparatus, and system for access information indication

Abstract

The application relates to the field of wireless communication, in particular to an access method in a wireless communication system. The method is used to solve the problem that network equipment cannot flexibly indicate that a certain type of terminal equipment accesses, and another type of terminal equipment is prohibited from accessing in the prior art. The method comprises the following steps: a network equipment sends at least one first information to a first terminal equipment, the at least one first information is used for indicating at least one of a first access capability and a first access permission; and the first terminal equipment determines whether the network equipment has the capability of accessing the first terminal equipment and / or whether the network equipment allows the first terminal equipment to access according to the at least one first information.

Description

[0001] This application is a divisional application. The original application has the application number 202010791732.2 and the original application date is August 7, 2020. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of wireless communication, and more particularly to a method for indicating access information in a wireless communication system. Background Technology

[0003] In existing technologies, when a terminal device attempts to access a cell, it detects access-related information from the network device. When the terminal device receives a message from the network device prohibiting access, it attempts to access another cell. The network device's configured access prohibition message is broadcast to the terminal device. This access method cannot flexibly instruct one or more types of terminal devices to access the cell while prohibiting others from accessing it. Summary of the Invention

[0004] This application provides a method for indicating access information, which solves the problem in the prior art that network devices cannot flexibly indicate the access of a certain type of terminal device to a cell, while other one or more terminal devices are prohibited from accessing the cell.

[0005] Firstly, this application provides a communication method, the execution subject of which can be a terminal device or a chip within the terminal device. The following description uses a terminal device as the execution subject. The first terminal device receives at least one first piece of information from a network device, wherein the at least one first piece of 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 for the first terminal device, and the first access permission indicates whether the network device allows access for the first terminal device. Based on the at least one piece of first information, the first terminal device determines whether the network device supports access for the first terminal device and / or determines whether the network device allows access for the first terminal device.

[0006] Based on this scheme, the network device indicates to the first terminal device whether the network device is capable of supporting the access of the first terminal device and / or whether to allow the access of the first terminal device through at least one first piece of information. When the network device does not support the access of the first terminal device, the network device does not have the capability to allow access of the terminal device of the type to which the first terminal device belongs. When the network device does not allow the access of the first terminal device, the network device has the capability to allow the access of the first terminal device, but does not allow the first terminal device to access.

[0007] In one alternative approach, at least one first piece of information comprises one or more bits, and the at least one first piece of information is used to indicate one or more of the following:

[0008] Access from the first terminal device is not supported;

[0009] The first terminal device is not allowed to access;

[0010] The first terminal device is allowed to access the system, and the first terminal device receives information based on the first resource.

[0011] The first terminal device is allowed to access the system, and the first terminal device receives information based on the second resource.

[0012] The first terminal device is allowed to access the system, and the first terminal device receives information based on the third resource.

[0013] The first terminal device is not allowed to access the network within the first time frame;

[0014] The first terminal device is not allowed to access the network within the second time frame;

[0015] The first terminal device is not allowed to access the network within a third time frame.

[0016] In this approach, the first resource, second resource, and third resource are different resources. The first time range, second time range, and third time range are three different time ranges. In this method, the network device can be configured with three or more resources for the first terminal device to access. Through at least one piece of first information, the first terminal device determines which resource to use for accessing the network device, or, in other words, which resource to use to receive and / or send information to the network device. The network device can more flexibly instruct the first terminal device on the resources corresponding to its access to the network device, avoiding resource congestion caused by too many terminal devices accessing the same resource. This is beneficial for meeting the load balancing requirements when the first terminal device accesses the network device. By pre-configuring different time ranges, the network device can restrict the prohibited access time range for terminal devices based on their type, which also benefits network device load balancing. Alternatively, the network device can define different time ranges for different terminal device types according to different application scenarios to meet network device load balancing requirements. If the first terminal device detects that the network device does not support its access, it will not attempt to access the network device again, or will not attempt to access the network device again within a preset time, which helps save the terminal device's energy consumption.

[0017] In one alternative approach, at least one first piece of information includes one bit, wherein the first bit indicates that the first terminal device does not support access, the second bit indicates that the first terminal device is allowed to access, and the first terminal device receives information based on a first resource.

[0018] In one alternative approach, at least one first piece of information includes one bit, wherein the first bit state indicates that the first terminal device receives information based on a first resource, and the second bit state indicates that the first terminal device receives information based on a second resource.

[0019] In one alternative approach, at least one first piece of information comprises two bits, wherein the first two bits indicate that the first terminal device is not allowed to access, the second two bits indicate that the first terminal device is allowed to access, and the first terminal device receives information based on a first resource; the third two bits indicate that the first terminal device is allowed to access, and the first terminal device receives information based on a second resource; and the fourth two bits indicate that the first terminal device is allowed to access, and the first terminal device receives information based on a third resource.

[0020] In one alternative approach, at least one first piece of information comprises two bits, wherein the first two bits indicate that the network device supports access by the first terminal device; the second two bits indicate that the network device does not support access by the first terminal device; the third two bits indicate that access by the first terminal device is permitted and the first terminal device receives information based on a first resource; and the fourth bit indicates that access by the first terminal device is permitted and the first terminal device receives information based on a second resource.

[0021] In one alternative approach, at least one bit of the state of at least one first information indicates one or more of the following: 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 configuration, and beam resource.

[0022] In one alternative approach, the first resource is a control resource set, random access resource, or synchronization information resource, and the second and third resources are two types of 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 configuration, or beam resources, which are different from the first resource.

[0023] In an alternative approach, the first information may also indicate the search space and / or control channel parameters of the first terminal device.

[0024] In one alternative approach, at least one first piece of information comprises one or more bits, and the at least one first piece of information is used to indicate one or more of the following:

[0025] Access from the first terminal device is not supported, and access from the second terminal device is not supported.

[0026] It does not support access from the first terminal device, but it supports access from the second terminal device.

[0027] It supports access from the first terminal device, but does not support access from the second terminal device.

[0028] The first terminal device is not allowed to access the network, and the second terminal device is not allowed to access the network.

[0029] The first terminal device is not allowed to access, but the second terminal device is allowed to access based on the first resource;

[0030] The first terminal device is not allowed to access, but the second terminal device is allowed to access based on the second resource;

[0031] The first terminal device is allowed to access the resource based on the first resource, but access by the second terminal device is not allowed.

[0032] The first terminal device is allowed to access the system based on the second resource, but access by the second terminal device is not allowed.

[0033] The first terminal device is allowed to access, the second terminal device is allowed to access, and the first terminal device and the second terminal device access based on the first resource;

[0034] The first terminal device is allowed to access the network, and the second terminal device is allowed to access the network. The first terminal device accesses the network based on the first resource, and the second terminal device accesses the network based on the second resource.

[0035] In this system, the second terminal device and the first terminal device differ in their first characteristics, first resources, and second resources. 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 receive antenna ports, the number of radio frequency channels, the number of HARQ processes, supported peak rates, application scenarios, latency requirements, and processing capabilities. The number of resources may be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, time slots, mini-time slots, and / or the number of symbols. In this method, when there are two or more terminal devices with different first characteristics in the communication system, or when there are two types of terminal devices in the communication system, the network device can indicate whether to allow the first type of terminal device and / or whether to allow the second type of terminal device to access the network through at least one piece of first information. Furthermore, the resources corresponding to the access of the two types of terminal devices to the network device can be the same or different. The indication method is more flexible.

[0036] In one alternative approach, at least one bit of the state of at least one first piece of information indicates one or more of the following: 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 configuration, and beam resources of the first or second resource.

[0037] In one alternative approach, the first resource is a control resource set, random access resource, or synchronization information resource, and the second resource is two different types of 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 configuration, or beam resources. In this approach, the network device can be configured with two or more types of resources for access by first-type terminal devices and / or second-type terminal devices.

[0038] In one alternative approach, at least one piece of first information is contained in the Master Information Block (MIB); or, at least one piece of first information is contained in the Downlink Control Information (DCI); or, at least one piece of first information is contained in the System Information Block (SIB).

[0039] In one alternative approach, the communication frequencies of the first terminal device and the network device are located within frequency range 1, and at least one piece of first information is included in the main information block (MIB); or, the communication frequencies of the first terminal device and the network device are located within frequency range 2, and at least one piece of first information is included in the downlink control information (DCI) or the system information block (SIB). These approaches utilize available bits in different frequency ranges to better adapt to scenarios with varying frequency ranges.

[0040] In one alternative approach, one of the first pieces of information is contained in the main information block (MIB), and the other of the first pieces of information is contained in the downlink control information or the system information block.

[0041] In one alternative approach, the communication frequencies of the first terminal device and the network device are within frequency range 2.

[0042] In one alternative approach, the frequencies within frequency range 1 are less than the first frequency, and the frequencies within frequency range 2 are greater than the first frequency, wherein the first frequency is 7125MHz.

[0043] In one alternative, the frequencies within frequency range 1 are between 410MHz and 7125MHz, and the frequencies within frequency range 2 are greater than 24250MHz.

[0044] In one alternative approach, at least one first piece of information includes a first piece of information indicating a first access capability and / or a first access license; or, at least one first piece of information includes two first pieces of information, one of which indicates a first access capability and the other indicates a first access license.

[0045] In one alternative approach, the first information is included in the main information block or system information block 1. At least one piece of the first information includes one or more bits of the operator-reserved field `cellReservedForoperatorUse`, and / or the other-purpose reserved field `cellReservedForOtherUse`, and / or the compatibility reserved field `cellReservedForFutureUse`. At least one piece of the first information indicates whether the network device supports access by the first terminal device. If at least one piece of the first information indicates that the network device supports access by the first terminal device, then `cellReservedForoperatorUse`, or `cellReservedForOtherUse`, or `cellReservedForFutureUse`, is not applied to the first terminal device.

[0046] Secondly, this application provides a communication method, the execution subject of which can be a network device or a chip in the network device. The following description uses a network device as the execution subject. The network device determines whether it supports access for a first terminal device and / or determines whether it allows access for the first terminal device. The network device sends at least one first piece of information to the terminal device. This first piece of 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 for the first terminal device, and the first access permission indicates whether the network device allows access for the first terminal device.

[0047] Based on this scheme, network devices determine whether to support the access of the first terminal device based on hardware capabilities, software capabilities, or performance indicators. The network devices also determine whether to allow the first terminal device to access the network device based on the number of terminal devices connected within the cell and the requirements of load balancing. The first terminal device determines whether the network device has the capability to support its access and / or whether it allows its access through at least one piece of first information. If the network device does not support the first terminal device's access, it lacks the capability to allow access for terminal devices of the type to which the first terminal device belongs. If the network device does not allow the first terminal device's access, it has the capability to allow access but does not permit it to do so.

[0048] In one alternative approach, at least one first piece of information comprises one or more bits, and the at least one first piece of information is used to indicate one or more of the following:

[0049] Access from the first terminal device is not supported;

[0050] The first terminal device is not allowed to access;

[0051] The first terminal device is allowed to access the system, and the first terminal device receives information based on the first resource.

[0052] The first terminal device is allowed to access the system, and the first terminal device receives information based on the second resource.

[0053] The first terminal device is allowed to access the system, and the first terminal device receives information based on the third resource.

[0054] The first terminal device is not allowed to access the network within the first time frame;

[0055] The first terminal device is not allowed to access the network within the second time frame;

[0056] The first terminal device is not allowed to access the network within a third time frame.

[0057] In this configuration, the first resource, second resource, and third resource are different resources. The first time range, second time range, and third time range are three different time ranges. In this approach, the network device can be configured with three or more resources for the first terminal device to access. Through at least one piece of first information, the first terminal device determines which resource to use for accessing the network device, or, in other words, which resource to use to receive and / or send information to the network device. This allows the network device to more flexibly instruct the first terminal device on the corresponding resource, avoiding resource congestion caused by too many terminal devices accessing the same resource. It also helps meet the load balancing requirements when the first terminal device accesses the network device. By pre-configuring different time ranges, the network device can restrict the prohibited access time range for terminal devices based on their type, which also benefits network load balancing. Alternatively, the network device can define different time ranges for different terminal device types according to different application scenarios to meet network load balancing requirements.

[0058] In one alternative approach, at least one first piece of information includes one bit, wherein the first bit indicates that the first terminal device does not support access, the second bit indicates that the first terminal device is allowed to access, and the first terminal device receives information based on a first resource.

[0059] In one alternative approach, at least one first piece of information includes one bit, wherein the first bit state indicates that the first terminal device receives information based on a first resource, and the second bit state indicates that the first terminal device receives information based on a second resource.

[0060] In one alternative approach, at least one first piece of information comprises two bits, wherein the first two bits indicate that the first terminal device is not allowed to access the network, the second two bits indicate that the first terminal device is allowed to access the network, and the first terminal device receives information based on a first resource; the third two bits indicate that the first terminal device is allowed to access the network, and the first terminal device receives information based on a second resource; and the fourth two bits indicate that the first terminal device is allowed to access the network, and the first terminal device receives information based on a third resource.

[0061] In one alternative approach, at least one first piece of information comprises two bits, wherein the first two bits indicate that the network device supports access by the first terminal device; the second two bits indicate that the network device does not support access by the first terminal device; the third two bits indicate that access by the first terminal device is permitted and the first terminal device receives information based on a first resource; and the fourth bit indicates that access by the first terminal device is permitted and the first terminal device receives information based on a second resource.

[0062] In one optional manner, at least one piece of first information comprises one bit. This first information is contained within the main information block or system information block 1. Optionally, at least one piece of first information is carried by at least one bit in the operator-reserved field `cellReservedForoperatorUse`, or by at least one bit in the other-purpose-reserved field `cellReservedForOtherUse`, or by at least one bit in the compatibility-reserved field `cellReservedForFutureUse`. In this case, at least one piece of first information is dedicated information for a first type of terminal device. This dedicated information can be understood as information that only a first type of terminal device can interpret; other types of terminal devices cannot interpret this dedicated information. The first type of terminal device has the same first characteristics as other first-type terminal devices.

[0063] In one alternative approach, at least one bit of the state of at least one first information indicates one or more of the following: 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 configuration, and beam resource.

[0064] In one alternative approach, the first resource is a control resource set, random access resource, or synchronization information resource, and the second and third resources are two types of 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 configuration, or beam resources, which are different from the first resource.

[0065] In an alternative approach, the first information may also indicate the search space and / or control channel parameters of the first terminal device.

[0066] In one alternative approach, at least one first piece of information comprises one or more bits, and the at least one first piece of information is used to indicate one or more of the following:

[0067] Access from the first terminal device is not supported, and access from the second terminal device is not supported.

[0068] It does not support access from the first terminal device, but it supports access from the second terminal device.

[0069] It supports access from the first terminal device, but does not support access from the second terminal device.

[0070] The first terminal device is not allowed to access the network, and the second terminal device is not allowed to access the network.

[0071] The first terminal device is not allowed to access, but the second terminal device is allowed to access based on the first resource;

[0072] The first terminal device is not allowed to access, but the second terminal device is allowed to access based on the second resource;

[0073] The first terminal device is allowed to access the resource based on the first resource, but access by the second terminal device is not allowed.

[0074] The first terminal device is allowed to access the system based on the second resource, but access by the second terminal device is not allowed.

[0075] The first terminal device is allowed to access, the second terminal device is allowed to access, and the first terminal device and the second terminal device access based on the first resource;

[0076] The first terminal device is allowed to access the network, and the second terminal device is allowed to access the network. The first terminal device accesses the network based on the first resource, and the second terminal device accesses the network based on the second resource.

[0077] In this system, the second terminal device and the first terminal device differ in their first characteristics, first resources, and second resources. 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 receive antenna ports, the number of radio frequency channels, the number of HARQ processes, supported peak rates, application scenarios, latency requirements, and processing capabilities. The number of resources may be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, time slots, mini-time slots, and / or the number of symbols. In this method, when there are two or more terminal devices with different first characteristics in the communication system, or when there are two types of terminal devices in the communication system, the network device can indicate whether to allow the first type of terminal device and / or whether to allow the second type of terminal device to access the network through at least one piece of first information. Furthermore, the resources corresponding to the access of the two types of terminal devices to the network device can be the same or different. The indication method is more flexible.

[0078] In one alternative approach, at least one bit of the state of at least one first piece of information indicates one or more of the following: 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 configuration, and beam resources of the first or second resource.

[0079] In one alternative approach, the first resource is a control resource set, random access resource, or synchronization information resource, and the second and third resources are two types of 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 configuration, or beam resources, which are different from the first resource.

[0080] In the above method, the network device can be configured with two or more resources for access by the first type of terminal device and / or the second type of terminal device.

[0081] In one alternative approach, at least one piece of first information is contained in the Master Information Block (MIB); or, at least one piece of first information is contained in the Downlink Control Information (DCI); or, at least one piece of first information is contained in the System Information Block (SIB).

[0082] In one alternative approach, the communication frequencies of the first terminal device and the network device are located within frequency range 1, and at least one piece of first information is included in the main information block (MIB); or, the communication frequencies of the first terminal device and the network device are located within frequency range 2, and at least one piece of first information is included in the downlink control information (DCI) or the system information block (SIB). These approaches utilize available bits in different frequency ranges to better adapt to scenarios with varying frequency ranges.

[0083] In one alternative approach, one of the first pieces of information is contained in the main information block (MIB), and the other of the first pieces of information is contained in the downlink control information or the system information block.

[0084] In one alternative approach, the communication frequencies of the first terminal device and the network device are within frequency range 2.

[0085] In one alternative approach, the frequencies within frequency range 1 are less than the first frequency, and the frequencies within frequency range 2 are greater than the first frequency, wherein the first frequency is 7125MHz.

[0086] In one alternative, the frequencies within frequency range 1 are between 410MHz and 7125MHz, and the frequencies within frequency range 2 are greater than 24250MHz.

[0087] In one alternative approach, at least one first piece of information includes a first piece of information indicating a first access capability and / or a first access license; or, at least one first piece of information includes two first pieces of information, one of which indicates a first access capability and the other indicates a first access license.

[0088] In one alternative approach, the first information is included in the main information block or system information block 1. At least one piece of the first information includes one or more bits of the operator-reserved field `cellReservedForoperatorUse`, and / or the other-purpose reserved field `cellReservedForOtherUse`, and / or the compatibility reserved field `cellReservedForFutureUse`. At least one piece of the first information indicates whether the network device supports access by the first terminal device. If at least one piece of the first information indicates that the network device supports access by the first terminal device, then `cellReservedForoperatorUse`, or `cellReservedForOtherUse`, or `cellReservedForFutureUse`, is not applied to the first terminal device.

[0089] Thirdly, this application provides a communication device, the beneficial effects of which are described in the first aspect and will not be repeated here. The communication device includes at least one processor and an interface circuit. The interface circuit is used to provide input or output of instructions and / or data to the at least one processor. Optionally, the communication device also includes a memory for storing 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 program or instructions, the communication device performs the method described above, which is executed by the network device.

[0090] Fourthly, this application provides a communication device, the beneficial effects of which are described in the second aspect and will not be repeated here. The communication device includes at least one processor and an interface circuit. The interface circuit is used to provide input or output of instructions and / or data to the at least one processor. Optionally, the communication device also includes a memory for storing 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 program or instructions, the communication device performs the method described above, which is executed by the terminal device.

[0091] Fifthly, a computer program product is provided, the computer program product comprising: computer program code, which, when the computer program code is executed, causes the methods executed by the terminal device in the above aspects to be performed.

[0092] In a sixth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when the computer program code is executed, causes the methods executed by the network device in the above aspects to be performed.

[0093] Seventhly, this application provides a chip system including a processor for implementing the functions of the network device in the methods described above. In one possible design, the chip system further includes a memory for storing program instructions and / or data. This chip system may be composed of chips or may include chips and other discrete devices.

[0094] Eighthly, this application provides a chip system including a processor for implementing the functions of the terminal device in the methods described above. In one possible design, the chip system further includes a memory for storing program instructions and / or data. This chip system may be composed of chips or may include chips and other discrete devices.

[0095] Ninthly, this application provides a computer-readable storage medium storing a computer program that, when run, implements the methods executed by the terminal device in the above aspects.

[0096] In a tenth aspect, this application provides a computer-readable storage medium storing a computer program that, when run, implements the methods executed by the network device in the above aspects. Attached Figure Description

[0097] The embodiments of the present invention will now be described in more detail with reference to the accompanying drawings:

[0098] Figure 1A schematic diagram illustrating a possible application scenario of an embodiment of the present invention is shown;

[0099] Figure 2 A flowchart illustrating an indication method provided in this application is shown;

[0100] Figure 3 A flowchart illustrating another indication method provided in this application is shown;

[0101] Figure 4 A flowchart illustrating another indication method provided in this application is shown;

[0102] Figure 5 A flowchart illustrating another indication method provided in this application is shown;

[0103] Figure 6 A schematic structural diagram of the communication device provided in this application is shown;

[0104] Figure 7 A schematic structural diagram of the network device provided in this application is shown;

[0105] Figure 8 A schematic structural diagram of the terminal device provided in this application is shown;

[0106] Figure 9 A schematic diagram of a chip provided in this application is shown. Detailed Implementation

[0107] The network architecture and business scenarios described in the embodiments of this invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of this invention, and do not constitute a limitation on the technical solutions provided by the embodiments of this invention. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this invention are also applicable to similar technical problems.

[0108] In this embodiment of the invention, "multiple" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0109] Figure 1 A schematic diagram of a possible application scenario according to an embodiment of the present invention is shown. The 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 and the at least two types of terminal devices can communicate via one or more air interface technologies.

[0110] When a terminal device accesses an NR network, it needs to go through processes such as cell search, obtaining system information, and random access. The terminal obtains information about the cell through the cell's system information, ensuring it can operate correctly within that cell after access. During cell search, the terminal device needs to search for the synchronization signal block (SS / PBCH Block, SSB). The synchronization signal block contains the primary synchronization signal (PSS), secondary synchronization signal (SSS), demodulation reference signal (DMRS), and physical broadcast channel (PBCH). The UE can obtain downlink synchronization, physical-layer cell identity (PCI), and new system information for the cell through the SSB.

[0111] For a given cell, the system information of that cell applies to all terminal devices within that cell; it can be understood as cell-level system information. System information can be divided into the Master Information Block (MIB) and multiple System Information Blocks (SIBs). After decoding the SSB, the terminal device obtains the MIB information, which includes the field PDCCH-ConfigSIB1, used to indicate the control information configuration parameters for scheduling SIB1. The terminal device retrieves the SSB and control resource set information from PDCCH-ConfigSIB1 by looking up a table, thereby determining the location of the Physical Downlink Control Channel (PDCCH). This PDCCH is used to schedule the Physical Downlink Shared Channel (PDSCH). The terminal device then decodes the PDSCH to obtain the information indicated by SIB1.

[0112] As described above, MIB and SIB1 are essential information for terminal devices to access a cell. Since MIB information is at the cell level, network devices can use it to instruct or prohibit terminal devices from accessing the cell. However, in existing technologies, when two or more types of terminal devices exist in a cell, network devices cannot restrict access to only certain types of terminal devices while disallowing others. Furthermore, for some types of terminal devices, network devices may not have the capability to support their access. In such cases, the terminal device blindly attempting to access the cell will not only fail to connect but also consume excessive power.

[0113] Based on the above, this application provides an access method. The principle of this method is that a network device configures at least one piece of first information to indicate whether the network device has the capability to support the access of a new type of terminal device, and / or whether the network device allows the access of a new type of terminal device. This enables flexible indication of access information for at least two types of terminal devices when two or more types of terminal devices exist in the communication system.

[0114] Based on the process of terminal devices accessing a cell, the following explains the nouns or terms that may appear in the embodiments of the present invention, and these nouns or terms are also part of the content of the invention.

[0115] I. Master Information Block (MIB)

[0116] The MIB (Missing Information Block) is carried in the Physical Broadcast Channel (PBCH). For a given cell, the MIB contains reference and scheduling information for many system information blocks within that cell. The MIB message carries the most basic information, which is crucial for decoding the PDSCH channel. Terminal devices must first decode the MIB before they can use the parameters within it to continue decoding data in the PDSCH. In existing technologies, the MIB information includes a CellBarred field to indicate whether the terminal device is allowed to access the cell. The MIB information also includes a 1-bit Spare field, which does not provide any information.

[0117] In the existing protocol, if the maximum number of SSBs in an SSB cycle is equal to 64, 3 bits of the PBCH field are used to indicate the SSB index. When the maximum number of SSBs in an SSB cycle is less than 64, only 1 bit of the PBCH field is used to indicate the SSB index, and 2 bits are reserved.

[0118] II. System Information Block (SIB)

[0119] A System Information Block (SIB) contains system message elements. An SIB groups together system information elements with the same properties; different SIBs can have different characteristics. The SIB is contained within a Programmable Message Block (PDSCH), which is scheduled by the corresponding Programmable Message Block (PDCCH).

[0120] III. Physical Downlink Control Channel (PDCCH)

[0121] The PDCCH is used to carry downlink control information (DCI). A PDCCH contains one or more control-channel elements (CCEs), and the number of CCEs in the PDCCH is determined by the aggregation level. The aggregation level and the number of CCEs in the PDCCH are shown in Table 1.

[0122]

[0123] IV. Control Resource Set (CORESET)

[0124] A control resource set (CRS) represents a collection of time-frequency resources carrying a PDCCH. A CRS consists of several resource blocks (RBs) in the frequency domain and several symbols in the time domain. A terminal device (Terminal Equipment) can correspond to multiple CRSs, and each CRS can only be bound to one CCE-to-Resource Element Group (REG) mapping relationship. A REG is the basic unit of PDCCH resource mapping; one REG is defined as one RB on one OFDM symbol, and one RB is defined as 12 consecutive subcarriers in the frequency domain and one OFDM symbol in the time domain. REG bundles are a new concept introduced in NR (Radio Frequency Interchange). REGs are first grouped into REG bundles using a time-first (TF) mapping method, and then mapped to control resources at the REG bundle granularity, either interleaved or non-interleaved. One REG bundle consists of a group of consecutive REGs in the time and / or frequency domains, and the size of one REG bundle is equal to the size of the REG in the frequency domain multiplied by the size of the OFDM symbol in the time domain.

[0125] For pdcch-ConfigSIB1 in the MIB information, different pdcch-ConfigSIB1 status values ​​correspond to different control resource sets. The terminal device obtains the possible time and frequency range of PDCCH through pdcch-ConfigSIB1, and detects all possible locations of PDCCH through blind monitoring until the PDCCH is successfully decoded.

[0126] V. Network Equipment

[0127] Network equipment can be a base station, an access point, or an access network device, or it can refer to a device in an access network that communicates with a wireless terminal via one or more sectors on the air interface. Network equipment can be used to convert received air frames to and from IP packets, and act as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. Network equipment can also coordinate the management of air interface attributes. For example, network equipment can be a base station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), a relay station or access point, or a base station in a future 5G network, such as a gNB, etc., without limitation. It should be noted that for 5G or NR systems, under an NR base station, there may be one or more Transmission Reception Points (TRPs). All TRPs belong to the same cell, and each TRP and terminal can use the measurement reporting method described in the embodiments of this application. In another scenario, network devices can also be divided into Control Units (CUs) and Data Units (DUs). Under a CU, there can be multiple DUs, and each DU and terminal can use the measurement reporting method described in the embodiments of this application. The difference between the CU-DU separation scenario and the multi-TRP scenario is that a TRP is only a radio frequency unit or an antenna device, while a DU can implement protocol stack functions, such as physical layer functions.

[0128] VI. Terminal Equipment

[0129] Terminal devices can be wireless or wired. Wireless terminals can be devices that provide voice and / or other service data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. Wireless terminals can communicate with one or more core networks via a Radio Access Network (RAN). Wireless terminals can be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminals can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, remote terminals, access terminals, user terminals, user agents, user devices, or user equipment, without any specific definition here.

[0130] VII. Reduced Capability (REDCAP) Terminal Equipment

[0131] In New Radio (NR) communication systems, there are application scenarios that require support for REDCAP terminal devices. REDCAP terminal devices typically have narrower bandwidth, fewer antenna ports, lower processing power, longer processing time, and / or lower transmission rates. Additionally, REDCAP terminal devices have longer battery life, lower processing complexity, and / or lower cost.

[0132] 8. Radio Network Temporary Identifier (RNTI)

[0133] RNTI is a network device configuration used to identify terminal devices in a specific connected state within a cell, a group of terminal devices in a paging scenario, and / or a specific radio channel. Different types of RNTI operate by scrambling the Cyclic Redundancy Check (CRC) portion of the downlink control information (DCI) on the radio channel. The DCI is contained within the Physical Downlink Control Channel (PDCCH).

[0134] IX. Modulation and Coding Scheme (MCS)

[0135] The Modulation-Coding Table (MCS) is a representation proposed by 802.11n to characterize the communication rate of WLANs. NR rate matching is achieved through MCS index values. Each MCS index corresponds to a set of modulation orders, target code rates, and spectral efficiency. The MCS index is indicated by the DCI. The PDSCH carrying SIB1 is scheduled using a DCI scrambled with System Information Radio Network Temporary Identifier (SI-RNTI). At this time, some reserved idle bits are available, which are 15 or 17 bits. In the following embodiments, the first field represents this idle bit.

[0136] In the existing protocol, for DCI scrambled by Paging Radio Network Temporary Identifier (P-RNTI), Random Access Radio Network Temporary Identifier (RA-RNTI), and SI-RNTI, the modulation order must be less than or equal to 2.

[0137] The DCI contains 5 bits used to indicate the MCS index value. When the MCS index ranges from 0 to 9, the corresponding modulation order is 2; when the MCS index ranges from 10 to 16, the modulation order is 4; when the MCS index ranges from 17 to 28, the modulation order is 6; and when the MCS index ranges from 29, 30, and 31, the modulation orders are 2, 4, and 6, respectively. Specifically, when the MCS index value is 0 to 28, each index value simultaneously corresponds to one coding rate and spectral efficiency. When the MCS index value is 29 to 31, it is reserved and no coding rate or spectral efficiency indication is given. Therefore, for a PDSCH carrying SIB1, the DCI of that PDSCH is scheduled.

[0138] When the indicated modulation order does not exceed 2, the corresponding range of the MCS index value is also 0 to 9. At this time, the state of the 5-bit field indicating the MCS index value is 0000 to 01001, and the highest bit of the indicator field of the MCS index value is 0.

[0139] 10. Frequency Range (FR)

[0140] The frequency range, also known as the frequency band, is between 410MHz and 7125MHz in FR1 and greater than 24250MHz in FR2 in the NR system.

[0141] The technical solutions provided in this application can be applied to various communication systems, such as 5G (5th generation mobile networks), future evolution systems, or multiple converged communication systems. They can also be applied to various application scenarios within these communication systems, such as Industrial Wireless Sensor Networks (IWSN) and video surveillance. Furthermore, the technical solutions provided in this application can support various types of terminal devices, such as REDCAP terminal devices, including industrial wireless sensors, video surveillance cameras, and wearable devices (smartwatches).

[0142] To enable those skilled in the art to better understand the technical solutions provided by the embodiments of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0143] Figure 2 The diagram shown is a flowchart illustrating an access information indication method provided in this application. This method can be executed by a terminal device and a network device, or it can be executed by a chip in the terminal device and a chip in the network device. Figure 2 The network devices in the above can be Figure 1 The access network device 10 in the middle, the terminal device can be the above-mentioned Figure 1 Terminal device 20 in the middle. Figure 2 The methods shown may include the following operations.

[0144] Optionally, S200: The network device determines at least one piece of first information.

[0145] Specifically, the network device determines at least one piece of first information based on the type of terminal device within the cell, the number of terminal devices within the cell, and / or the resource allocation of terminal devices within the cell. The at least one piece of 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 for the first terminal device; the first access permission indicates whether the network device allows access for the first terminal device.

[0146] Optionally, at least one piece of first information is included in the main information block (MIB), the system information block (SIB), or the downlink control information; or, one of the first pieces of first information is included in the MIB, and the other is included in the SIB or the downlink control information. Optionally, the downlink control information is used to schedule the dedicated system information block (SIB1).

[0147] Optionally, at least one first piece of information may contain one or more bits.

[0148] S201: The network device sends at least one first message to the first terminal device, and correspondingly, the first terminal device receives at least one first message from the network device.

[0149] Specifically, at least one piece of first information includes one or more bits, and there is a corresponding relationship between the different bit states of at least one piece of first information and whether the network device allows and / or supports the access of the first terminal device. When the network device does not support the access of the terminal device, it can be understood that the network device does not have the capability for the first terminal device to access. When the network device does not allow the first terminal device to access, it can be understood that the network device has the capability for the first terminal device to access, but does not allow the first terminal device to access. For example, for a certain cell, because there are a large number of terminal devices connected in the cell, the network device, for the purpose of load balancing, does not allow the first terminal device to access the cell.

[0150] S202: Determine whether the network device supports access by the first terminal device and / or allows access by the first terminal device.

[0151] Specifically, based on at least one piece of first information, the first terminal device determines whether the network device supports and / or allows the first terminal device to access.

[0152] Optionally, at least one different bit state of the first information may also correspond to the resource information corresponding to the network device accessed by the first terminal 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 PDSCH, PDCCH and / or SIB1.

[0153] Specifically, the resources corresponding to the network devices accessed by the first terminal device can be a first resource, a second resource, or a third resource. The resource information corresponding to the first terminal device can be one or more of the following: 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 configuration, or beam resources. The first resource, second resource, and third resource are three different types of resources. Optionally, the first resource can be a control resource set, a random access resource, or a synchronization information resource. The resource information of the first resource, second resource, and third resource is different, and the resource information is at least one of the following: time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, beam resources, time-domain resource offset value, frequency-domain resource offset value, or code-domain resource offset value.

[0154] Optionally, the first resource includes one or more resource elements of the second resource. The resource element may be an RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, time slot, mini time slot and / or symbol, etc. In this case, the overlapping one or more resource elements in the first resource element and the second resource element may be time division multiplexing, frequency division multiplexing or code division multiplexing; or, the first resource and the second resource are different, and the resource elements in the first resource and the resource elements in the second resource are completely independent.

[0155] Optionally, the third resource includes one or more resource elements of 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, time slot, mini time slot and / or symbol, etc. In this case, the one or more resource elements overlapping between the third resource and the first resource element and / or the second resource element may be time division multiplexing, frequency division multiplexing or code division multiplexing; or, 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 of the resource elements in the first resource or the resource elements in the second resource.

[0156] Optionally, for the first resource, the time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset of the first resource can be relative to the second resource or the third resource. Similarly, the time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset of the second resource can be relative to the first resource or the third resource. The time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset of the third resource can be relative to the second resource or the first resource. Optionally, the resource offset value can be a preset value. For example, taking the resource offset value of the first resource as an example, the first resource is half the number of resources of the second or third resource.n The number of resources can be the number of RBs, the number of REs, the number of subcarriers, etc.; or, the resource offset value is a fixed bandwidth, such as 100MHz, 50MHz, 25MHz, 10MHz, 5MHz, etc.; or, the resource offset value is a corresponding number of RBs, such as 96RB, 48RB, 24RB, 12RB, 6RB, etc.

[0157] In one alternative approach, at least one first piece of information contains 1 bit; optionally, in the FRI band, at least one first piece of information is contained in a 1-bit indicator field in the MIB; or, in the FR2 band, at least one first piece of information is contained in a 1-bit indicator field in the downlink control information of SIB1 or scheduling SIB1.

[0158] Example 1: The 1-bit indicator field corresponds to two status values. These two status values ​​correspond to whether the network device supports the first terminal device accessing the first cell. For example, status value 0 indicates that the network device does not support the first terminal device access; status value 1 indicates that the network device supports the first terminal device access. When the network device does not support terminal device access, it can be understood that the network device does not have the capability for the first terminal device to access.

[0159] Example 2: The 1-bit indicator field corresponds to two status values, and these two status values ​​are related to whether the network device allows the first terminal device to access the first cell. For example, status value 0 indicates that the network device does not allow the first terminal device to access the cell, while status value 1 indicates that the network device allows the first terminal device to access the cell.

[0160] Example 3: The 1-bit indication field corresponds to two status values, and these two status values ​​are related to the resource information corresponding to the first terminal device accessing the network device. This can be understood as at least one piece of first information indicating the resource information corresponding to the first terminal device's access to the network device when the network device supports and allows the first terminal device to access. For example, status value 0 indicates that the first terminal device receives information based on first resources, and status value 1 indicates that the first terminal device receives information based on second resources. Optionally, at least one piece of first information is included in downlink control information, which is used to schedule the data channel carrying system information block 1.

[0161] Further optionally, the first resource is a public PDSCH, which can be understood as a PDSCH that can be received by all terminal devices within the coverage area of ​​the network device. The second resource is a dedicated PDSCH, which can be understood as a PDSCH that can only be received by terminal devices of the first type. Alternatively, the first resource is a public SIB1, which can be understood as an SIB1 that can be received by all terminal devices within the coverage area of ​​the network device, and the second resource is a dedicated SIB1, which can be understood as an SIB1 that can only be received by terminal devices of the first type. Wherein, the terminal device of the first type is a terminal device that has the same first characteristic as the first terminal device.

[0162] Example 4: The 1-bit indication field corresponds to two status values. The first bit indicates that the first terminal device does not support access, while the second bit indicates that the first terminal device is allowed to access. The first terminal device receives information based on a first resource. Optionally, at least one piece of first information is included in the MIB, and the first resource is the control resource set with index 0.

[0163] Example 5: The 1-bit information contained in the main information block or system information block 1 may, optionally, be a cellReservedForoperatorUse field reserved for the operator, a cellReservedForOtherUse field reserved for other purposes, or a cellReservedForFutureUse field reserved for compatibility. In this case, at least one piece of first information is dedicated information for a first type of terminal device. This dedicated information can be understood as information that only a first type of terminal device can interpret; other types of terminal devices cannot interpret this dedicated information. The first type of terminal device has the same first feature as the first terminal device.

[0164] In one optional manner, at least one piece of first information comprises 2 bits. Optionally, in the FRI band, at least one piece of first information is included in a 2-bit indicator field in the MIB; in the FR2 band, at least one piece of first information is included in a 2-bit indicator field in the downlink control information of SIB1 or scheduling SIB1. Further optionally, in the FRI band, the 2 bits consist of 1 bit of spare in the MIB information and 1 bit of the field indicating the SSB index in the PBCH; or, the 2 bits consist of 2 bits of the field indicating the SSB index in the PBCH.

[0165] Example 1: The correspondence between different state values ​​of at least one first piece of information and the indicated content can be shown in Table 2. At least one first piece of information contains 2 bits, corresponding to 4 state values. In this case, the different bit states of at least one first piece of information can indicate whether the network device supports access by the first terminal device, whether access by the first terminal device is allowed, and information about the resources corresponding to the first terminal device's access to the network device. The resource information includes one or more of the following: 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 configuration, and beam resources. Optionally, the resource information can be information about a first resource, a second resource, or a third resource.

[0166]

[0167] Status value 00 indicates to the first terminal device that the network device does not support the first terminal device's access; status value 01 indicates to the first terminal device that the network device supports the first terminal device's access, but the first terminal device is not allowed to access at this time; status value 10 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and at this time, when the first terminal device accesses the network device, the resource information corresponding to the first terminal device is P1; status value 11 indicates to the first terminal device that the network device supports and allows the first terminal device to access, and at this time, when the first terminal device accesses the network device, the resource information corresponding to the first terminal device is P2.

[0168] Optionally, P1 can be one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the first resource. P2 can be one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the second resource.

[0169] Optionally, P1 is an offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P2 is another offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain.

[0170] For example, P1 and P2 are used to indicate two different offset values ​​between the first and second resources in the time domain; or, P1 and P2 are used to indicate two different offset values ​​between the first and second resources in the frequency domain; or, P1 and P2 are used to indicate two different offset values ​​between the first and second resources in the code domain; or, P1 is used to indicate the offset value between the first and second resources in the time domain, and P2 is used to indicate the offset value between the first and second resources in the frequency domain and / or code domain; or, P1 is used to indicate the offset value between the first and second resources in the frequency domain, and P2 is used to indicate the offset value between the first and second resources in the time domain and / or code domain; or, P1 is used to indicate the offset value between the first and second resources in the code domain, and P2 is used to indicate the offset value between the first and second resources in the time domain and / or frequency domain. It is understood that the offset values ​​indicated by P1 and P2 can be interchanged, and this is not a restriction.

[0171] Example 2: The correspondence between different state values ​​of at least one first piece of information and the indicated content can be shown in Table 3. At least one first piece of information contains 2 bits, corresponding to 4 state values. In this case, the different state values ​​of at least one first piece of information can indicate whether the network device supports access by the first terminal device, whether access by the first terminal device is allowed, and the resource information corresponding to the access of the first terminal device to the network device. The resource information includes one or more of the following: 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 configuration, and beam resources. Optionally, the resource information can be information about a first resource, a second resource, or a third resource.

[0172]

[0173] Status value 00 indicates to the first terminal device that the network device does not support the first terminal device's access; status value 01 indicates to the first terminal device that the network device supports and allows the first terminal device's access, and at this time, the resource information of the first terminal device when accessing the network device is P1; status value 10 indicates to the first terminal device that the network device supports and allows the first terminal device's access, and at this time, the resource information of the first terminal device when accessing the network device is P2. Status value 11 indicates to the first terminal device that the network device supports and allows the first terminal device's access, and at this time, the resource information of the first terminal device when accessing the network device is P3. P1, P2, and P3 can be three different types of resource information.

[0174] Optionally, P1 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the first resource. P2 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the second resource. P3 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the third resource.

[0175] Optionally, P1 is a first offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P2 is a second offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P3 is a third offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain.

[0176] For example, P1, P2, and P3 are used to indicate three different offset values ​​between the first resource and the second resource in the time domain; or, P1, P2, and P3 are used to indicate three different offset values ​​between the first resource and the second resource in the frequency domain; or, P1, P2, and P3 are used to indicate three different offset values ​​between the first resource and the second resource in the code domain; or, P1 is used to indicate the offset value between the first resource and the second resource in the time domain, P2 is used to indicate the offset value between the first resource and the second resource in the frequency domain and / or the code domain; P3 is used to indicate the offset value between the first resource and the second resource in the time domain, and / or... The offset values ​​in the frequency domain and / or code domain; or, P1 indicates the offset value between the first resource and the second resource in the frequency domain, P2 indicates the offset value between the first resource and the second resource in the time domain and / or code domain; P3 indicates the offset value between the first resource and the second resource in the time domain, and / or frequency domain and / or code domain; or, P1 indicates the offset value between the first resource and the second resource in the code domain, P2 indicates the offset value between the first resource and the second resource in the time domain and / or frequency domain, and P3 indicates the offset value between the first resource and the second resource in the time domain, and / or frequency domain and / or code domain. It is understood that the offset values ​​indicated by P1, P2, and P3 can be interchanged, and this is not restricted here.

[0177] Example 3: The correspondence between different state values ​​of at least one first piece of information and the indicated content can be shown in Table 4. At least one first piece of information contains 2 bits, corresponding to 4 state values. Different state values ​​of at least one first piece of information can indicate the resource information corresponding to the network device accessed by the first terminal device. In this case, it can be understood that the network device supports and allows the first terminal device to access. The resource information includes one or more of the following: 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 configuration, and beam resources. Optionally, the resource information can be information about a first resource, a second resource, or a third resource.

[0178]

[0179] Status value 00 indicates to the first terminal device that the network device supports and allows the first terminal device to access the network device, and at this time, the resource information of the first terminal device when accessing the network device is P1; status value 01 indicates to the first terminal device that the network device supports and allows the first terminal device to access the network device, and at this time, the resource information of the first terminal device when accessing the network device is P2. Status value 10 indicates to the first terminal device that the network device supports and allows the first terminal device to access the network device, and at this time, the resource information of the first terminal device when accessing the network device is P3. Status value 11 indicates to the first terminal device that the network device supports and allows the first terminal device to access the network device, and at this time, the resource information of the first terminal device when accessing the network device is P4. Specifically, the resource corresponding to the first terminal device accessing the network device is the first resource, and P1, P2, P3, and P4 can be four different resource information.

[0180] Optionally, P1 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the first resource. P2 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the second resource. P3 represents one or more of the time-domain location information, frequency-domain location information, code-domain location information, resource index, power configuration, and beam resources of the third resource. P4 represents the offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain, or P4 represents the offset value between the third resource and the second resource in the time domain, frequency domain, and / or code domain.

[0181] Optionally, P1 is a first offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P2 is a second offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P3 is a third offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain. P4 is a fourth offset value between the first resource and the second resource in the time domain, frequency domain, and / or code domain.

[0182] Example 4: At least one first piece of information contains 2 bits, wherein the first bit status of the 2 bits indicates that the network device supports access by the first terminal device; the second bit status of the 2 bits indicates that the network device does not support access by the first terminal device; the third bit status of the 2 bits indicates that access by the first terminal device is permitted and the first terminal device receives information based on the first resource; and the fourth bit status indicates that access by the first terminal device is permitted and the first terminal device receives information based on the second resource.

[0183] Figure 3The diagram shown is a flowchart illustrating an access information indication method provided in this application. This method can be executed by a terminal device and a network device, or it can be executed by a chip in the terminal device and a chip in the network device. Figure 3 The network devices in the above can be Figure 1 The access network device 10 in the middle, the terminal device can be the above-mentioned Figure 1 Terminal device 20 in the middle. Figure 3 The methods shown may include the following operations.

[0184] S300: The network device determines at least one piece of first information.

[0185] Specifically, at least one piece of first information is used to indicate at least one of a first access capability and a first access permission, wherein the first access capability is whether the network device supports access by the first terminal device; and the first access permission is whether the network device allows access by the first terminal device.

[0186] Optionally, at least one piece of first information is included in the system information block (SIB) or the downlink control information of the scheduling SIB1, or at least one piece of first information is included in both the system information block (SIB) and the downlink control information of the scheduling SIB1.

[0187] Optionally, at least one piece of first information contains one or more bits, the number of which is N, where N is a positive integer.

[0188] S301: The network device sends at least one first message to the first terminal device, and correspondingly, the first terminal device receives at least one first message from the network device.

[0189] Specifically, at least one piece of first information contains N bits, and there is a corresponding relationship between the different bit status values ​​of at least one piece of first information and whether the network device allows the first terminal device to access and / or supports the access of the first terminal device.

[0190] S302: Determine whether the network device supports access by the first terminal device and / or allows access by the first terminal device.

[0191] Specifically, based on at least one piece of first information, the first terminal device determines whether the network device supports and / or allows the first terminal device to access.

[0192] Optionally, at least one different bit state value of the first information may also correspond to the resource information corresponding to the first terminal device accessing the network device, whether the network device allows the second terminal device to access, and / or the resource information corresponding to the second terminal device accessing the network device. When the network device does not allow the first terminal device and / or the second terminal device to access, it can be understood that the network device has the capability for the first terminal device and / or the second terminal device to access, but does not allow the first terminal device and / or the second terminal device to access. For example, for a certain cell, because the number of terminal devices accessing the cell is large, the network device does not allow the first terminal device and / or the second terminal device to access the cell for the purpose of load balancing. When the first terminal device and the second terminal device access the network device, they receive resource information based on at least one piece of first information, which may be PDSCH, PDCCH, and / or SIB1.

[0193] Specifically, the first terminal device and the second terminal device have different first features, which can also be understood as the first terminal device and the second terminal device belonging to different device types. The first feature includes one or more of the following:

[0194] Bandwidth, number of supported or configured resources, number of transmit antenna ports and / or receive antenna ports, number of RF channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenarios, latency requirements, processing capacity, protocol version, duplex mode, services, etc. The first feature is described in detail below.

[0195] Bandwidth, or channel bandwidth, is the bandwidth supported or configured by the terminal device. The bandwidth of the first terminal device and the second terminal device are different. For example, the bandwidth of the first terminal device is 20M and the bandwidth of the second terminal device is 100M.

[0196] The number of resources supported or configured may be RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, time slot, mini time slot and / or symbol number. The number of resources supported or configured by the first terminal device and the second terminal device are different. For example, the first terminal device supports 48 RBs and the second terminal device supports 96 RBs.

[0197] The number of transmit antenna ports and / or receive antenna ports, i.e., the number of transmit antenna ports and / or receive antenna ports of the first terminal device is different from that of the second terminal device. For example, the first terminal device has 1 transmit antenna port and 2 receive antenna ports, while the second terminal device has 2 transmit antenna ports and 4 receive antenna ports.

[0198] The number of radio frequency channels refers to the difference between the number of radio frequency channels in the first terminal device and the second terminal device. For example, the first terminal device has 1 radio frequency channel, while the second terminal device has 2 radio frequency channels.

[0199] The number of HARQ processes, i.e., the number of HARQ processes supported by the first terminal device is different from that of the second terminal device. For example, the number of HARQ processes supported by the first terminal device is 8, while that supported by the second terminal device is 16.

[0200] The supported peak rates, i.e. the maximum peak rates of the first terminal device and the second terminal device are different, for example: the maximum peak rate supported by the first terminal device is 100Mbps, and the peak rate supported by the second terminal device is 200Mbps.

[0201] Application scenarios refer to the fact that the first terminal device and the second terminal device are designed for different application scenarios. For example, the first terminal device is used in industrial wireless sensing, video surveillance, wearable devices, etc., while the second terminal device is used in mobile communication, video internet access, etc.

[0202] Latency requirements refer to the different transmission latency requirements of the first and second terminal devices. For example, the latency requirement of the first terminal device is 500 milliseconds, while the latency requirement of the second terminal device is 100 milliseconds.

[0203] The processing capabilities, and the different processing times and speeds of the first terminal device and the second terminal device for channel or data under different subcarrier space (SCS) conditions. For example, the first terminal device does not support complex calculations, which may include artificial intelligence (AI) and virtual reality (VR) rendering, while the second terminal device supports complex calculations. Or, it can be understood that the processing capability of the first terminal device is lower than that of the second terminal device.

[0204] Protocol version, that is, the first terminal device and the second terminal device belong to different protocol versions. For example, the first terminal device supports the protocol version Release 17, and the second terminal device supports the protocol version Release 15.

[0205] 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.

[0206] The services include, but are not limited to, IoT applications, such as video surveillance and mobile broadband (MBB). For example, the first terminal device supports real-time video surveillance, and the second terminal device supports mobile broadband (MBB).

[0207] Specifically, the resources corresponding to the first terminal device can be a first resource, a second resource, or a third resource. The resource information corresponding to the first terminal device can be one or more of the following: 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 configuration, or beam resources of the first, second, or third resource. Similarly, the resources corresponding to the second terminal device can be the same. The resource information corresponding to the second terminal device can be one or more of the following: 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 configuration, or beam resources of the first, second, or third resource. The first, second, and third resources represent three different types of resources. Optionally, the first resource can be a control resource set, random access resource, or synchronization information resource, and the second resource can be one of two different types of 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 configuration, or beam resources. Optionally, the first resource includes one or more resource elements of the second resource. The resource element may be an RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, time slot, mini time slot and / or symbol, etc. In this case, the overlapping one or more resource elements in the first resource element and the second resource element may be time division multiplexing, frequency division multiplexing or code division multiplexing; or, the first resource and the second resource are different, and the resource elements in the first resource and the resource elements in the second resource are completely independent.

[0208] Optionally, the third resource includes one or more resource elements of 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, time slot, mini time slot and / or symbol, etc. In this case, the one or more resource elements overlapping between the third resource and the first resource element and / or the second resource element may be time division multiplexing, frequency division multiplexing or code division multiplexing; or, 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 of the resource elements in the first resource or the resource elements in the second resource.

[0209] Optionally, for the first resource, the time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset can be relative to the second resource or the third resource. Similarly, the time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset of the second resource can be relative to the first resource or the third resource. The time-domain resource offset, frequency-domain resource offset, and / or code-domain resource offset of the third resource can be relative to the second resource or the first resource. Optionally, the resource offset value can be a preset value. For example, taking the offset value of the first resource as an example, the first resource is half the number of resources of the second or third resource. n The number of resources can be the number of RBs, the number of REs, the number of subcarriers, etc.; or the resource offset value is a fixed bandwidth, such as 100MHz, 50MHz, 25MHz, 10MHz, 5MHz, etc.; or the resource offset value is a corresponding number of RBs, such as 96RB, 48RB, 24RB, 12RB, 6RB, etc.

[0210] 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 disallowed access, for detailed description. Specifically, the resource information may include one or more of the following: 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 configuration, and beam resources. The following table is merely exemplary; the relationship between different bit states and indications of at least one piece of first information can be expressed in text or in a table, and this application does not impose any limitations on this.

[0211] Example 1: At least one piece of first information comprises 3 bits, and different state values ​​of the at least one piece of first information correspond to different indication contents. Optionally, the 3 bits are fields in SIB1, or the 3 bits consist of a 1-bit field in SIB1 and 2 bits from the downlink control information of the scheduling SIB1. The correspondence between different state values ​​of at least one piece of first information and the indication contents can be shown in Table 5.

[0212]

[0213] For example: one of the 3 bits corresponds to the content of: allowing the first terminal device to access via R1 and allowing the second terminal device to access via R2, which can correspond to state 000; for example: one of the 3 bits corresponds to the content of: allowing the first terminal device to access via R1 and allowing the second terminal device to access via R3, which can correspond to state 001; for example: one of the 3 bits corresponds to the content of: allowing the first terminal device to access via R2 and allowing the second terminal device to access via R3, which can correspond to state 010; for example: one of the 3 bits corresponds to the content of: allowing the first terminal device to access via R3 and allowing the second terminal device to access via R3, which can correspond to state 010; State 011; For example: one of the 3 bits corresponds to the content of: the first terminal device is not allowed to access, the second terminal device is allowed to access via R3, this state can correspond to state 100; for example: one of the 3 bits corresponds to the content of: the first terminal device is allowed to access via R1, the second terminal device is not allowed to access, this state can correspond to state 101; for example: one of the 3 bits corresponds to the content of: the first terminal device is allowed to access via R2, the second terminal device is not allowed to access, this state can correspond to state 110; for example: one of the 3 bits corresponds to the content of: the first terminal device is not allowed to access, the second terminal device is allowed to access via R1, this state can correspond to state 111.

[0214] Example 2: At least one piece of first information consists of 3 bits, and different state values ​​of the first piece of information correspond to different indication contents. Optionally, the 3 bits are fields in SIB1, or the 3-bit field is a field in the downlink control information of scheduling SIB1. The correspondence between different state values ​​of at least one piece of first information and indication contents can be shown in Table 6.

[0215]

[0216] For example: one of the 3 bits corresponds to the content of "first terminal device not allowed to access, second terminal device not allowed to access", which can correspond to state 000; for example: one of the 3 bits corresponds to the content of "first terminal device allowed to access via R1, second terminal device allowed to access via R3", which can correspond to state 001; for example: one of the 3 bits corresponds to the content of "first terminal device allowed to access via R2, second terminal device allowed to access via R3", which can correspond to state 010; for example: one of the 3 bits corresponds to the content of "first terminal device allowed to access via R3, second terminal device allowed to access via R3", which can correspond to state 0. 11; For example: One of the 3-bit states corresponds to the content: the first terminal device is not allowed to access, and the second terminal device is allowed to access via R3. This state can correspond to state 100; For example: One of the 3-bit states corresponds to the content: the first terminal device is allowed to access via R1, and the second terminal device is not allowed to access. This state can correspond to state 101; For example: One of the 3-bit states corresponds to the content: the first terminal device is allowed to access via R2, and the second terminal device is not allowed to access. This state can correspond to state 110; For example: One of the 3-bit states corresponds to the content: the first terminal device is not allowed to access, and the second terminal device is allowed to access via R1. This state can correspond to state 111.

[0217] Example 3: At least one piece of first information comprises 2 bits, and different state values ​​of these 2 bits correspond to different indication contents. Optionally, the 2 bits are fields in SIB1, or the 2 bits consist of 1 bit in SIB1 and 1 bit in the downlink control information of scheduling SIB1. The correspondence between different state values ​​of at least one piece of first information and indication contents can be shown in Table 7.

[0218]

[0219] For example: one of the 2-bit states corresponds to the content of: allowing the first terminal device to access via R3 and allowing the second terminal device to access via R3, which can correspond to state 00; for example: one of the 2-bit states corresponds to the content of: allowing the first terminal device to access via R1 and disallowing the second terminal device to access, which can correspond to state 01; for example: one of the 2-bit states corresponds to the content of: disallowing the first terminal device to access but allowing the second terminal device to access via R1, which can correspond to state 10; for example: one of the 2-bit states corresponds to the content of: allowing the first terminal device to access via R2 and allowing the second terminal device to access via R3, which can correspond to state 11.

[0220] Example 4: At least one piece of first information contains 2 bits, and different state values ​​of these 2 bits correspond to different indication contents. Optionally, the 2 bits are fields in SIB1, or the 2 bits are fields in the downlink control information of the scheduling SIB1. For example: one state of the 2 bits corresponds to the content: the first terminal device is not allowed to access, and the second terminal device is not allowed to access; this state can correspond to state 00. For example: one state of the 2 bits corresponds to the content: the first terminal device is allowed to access via R1, and the second terminal device is not allowed to access; this state can correspond to state 01. For example: one state of the 2 bits corresponds to the content: the first terminal device is not allowed to access, and the second terminal device is allowed to access via R1; this state can correspond to state 10. For example: one state of the 2 bits corresponds to the content: the first terminal device is allowed to access via R2, and the second terminal device is allowed to access via R3; this state can correspond to state 11. This can also be represented by a table. The correspondence between different state values ​​of at least one piece of first information and the indication contents can be shown in Table 8.

[0221]

[0222] Example 5: At least one piece of first information comprises 2 bits, and different state values ​​of these 2 bits correspond to different indication contents. Optionally, the 2 bits are fields in SIB1, or the 2-bit field is a field in the downlink control information of the scheduling SIB1. The correspondence between different state values ​​of at least one piece of first information and indication contents can be shown in Table 9.

[0223]

[0224] For example: one of the 2-bit states corresponds to the content of "the first terminal device is not allowed to access, and the second terminal device is not allowed to access", which can correspond to state 00; for example: one of the 2-bit states corresponds to the content of "the first terminal device is allowed to access via R1, and the second terminal device is not allowed to access", which can correspond to state 01; for example: one of the 2-bit states corresponds to the content of "the first terminal device is not allowed to access, and the second terminal device is allowed to access via R1", which can correspond to state 10; for example: one of the 2-bit states corresponds to the content of "the first terminal device is allowed to access via R1, and the second terminal device is allowed to access via R1", which can correspond to state 11.

[0225] Figure 4 The diagram shown is a flowchart illustrating an access information indication method provided in this application. This method can be executed by a terminal device and a network device, or it can be executed by a chip in the terminal device and a chip in the network device. Figure 4 The network devices in the above can be Figure 1The access network device 10 in the middle, the terminal device can be the above-mentioned Figure 1 Terminal device 20 in the middle. Figure 4 The methods shown may include the following operations.

[0226] S400: The network device determines at least one piece of first information.

[0227] Specifically, at least one piece of first information is used to indicate a first access permission, which is whether the network device allows the first terminal device to access. Optionally, at least one piece of first information is also used to indicate whether the network device allows the first terminal device to access within a preset time range.

[0228] At least one first piece of information is included in the downlink control information (DCI) of the scheduling SIB1, wherein the DCI indicates the modulation and coding scheme (MCS). Specifically, the DCI is in the format of 1-0, and the at least one first piece of information comprises N bits. Optionally, the N bits consist of at least one bit from the first field of the DCI and / or at least one bit from the five bits indicating the MCS index value.

[0229] S401: The network device sends at least one first message to the first terminal device, and correspondingly, the first terminal device receives at least one first message from the network device.

[0230] Specifically, at least one different state value of the first information can 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. Different state values ​​of the first information can correspond to different preset time ranges. The unit of the preset time range can be seconds, minutes, time slots, wireless 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 greater than or equal to 2.

[0231] S402: Determine whether the network device supports access by the first terminal device and / or allows access by the first terminal device.

[0232] Specifically, the first terminal device determines whether the network device allows the first terminal device to access the network, and / or whether the first terminal device is allowed to access the network within a preset time range, based on at least one piece of first information.

[0233] Example 1: The indication field carrying at least one first piece of information is one bit from the 15-bit (17-bit) operation parameters for a spectrum access channel within a cell, corresponding to two state values. In this case, the two states of at least one piece of first information are used to indicate whether the network device allows the first terminal device to access, or whether the network device does not allow the first terminal device to access. For example, state value 0 indicates that the network device allows the first terminal device to access; state value 1 indicates that the network device does not allow the first terminal device to access. The contents indicated by state values ​​0 and 1 can be interchanged; this is not a restriction.

[0234] Example 2: The indication field carrying at least one first piece of information is 2 bits of the 15 bits (17 bits) of the operation for a spectrum access channel within a cell, corresponding to four state values.

[0235]

[0236] In Table 10, T1 and T2 represent two different preset time ranges, N indicates that access is allowed, and Y indicates that access is permitted. A status value of 00 indicates to the first terminal device that the network device does not allow the first terminal device to access; a status value of 01 indicates to the first terminal device that the network device does not allow the first terminal device to access within T1; a status value of 10 indicates to the first terminal device that the network device does not allow the first terminal device to access within T2; and a status value of 11 indicates to the first terminal device that the network device allows the first terminal device to access.

[0237] Example 3: The indication field carrying at least one first piece of information is 2 bits of the 15-bit (17-bit) operation for an intra-cell spectrum access channel, corresponding to four state values.

[0238]

[0239] Status value 00 indicates to the first terminal device that the network device does not allow the first terminal device to access within a first time range; status value 01 indicates to the first terminal device that the network device does not allow the first terminal device to access within a second time range; status value 10 indicates to the first terminal device that the network device does not allow the first terminal device to access within a third time range; status value 11 indicates to the first terminal device that the network device allows the first terminal device to access. The first, second, and third time ranges can be three pre-configured time ranges of the network device. For pre-configured time ranges, when the duration of the configured time range is positive infinity, it can also be interpreted as the network device not allowing the first terminal device to access. For example, if any one of the preset time ranges T1, T2, or T3 is positive infinity, it can also be interpreted as the network device not allowing the first terminal device to access.

[0240] Example 4: The indication field carrying at least one first piece of information is 2 bits, which consists of 1 bit in one of the 15 bits (17 bits) of the operation of a spectrum access channel within a cell and the highest bit of the 5 bits indicating the MCS index value, corresponding to four state values.

[0241] Optionally, the most significant bit of the 5 bits indicating the MCS index value is used as a flag for dedicated downlink control information corresponding to the device type of the first terminal device. When the most significant bit of the 5-bit field indicating the MCS index value is 1, terminal devices of a different device type than the first terminal device cannot decode the downlink control information. Further, one bit from an indicator field of the 15 bits (17 bits) used for operation of the intra-cell spectrum access channel is used to indicate whether the network device allows the first terminal device to access and / or whether it allows the first terminal device to access within a preset time range. This can also be understood as the network device using the most significant bit of the MCS index value and one bit from the 15 bits (17 bits) used for operation of the intra-cell spectrum access channel to jointly indicate whether the network device allows the first terminal device to access, whether it allows the second terminal device to access, and / or whether it allows the first terminal device to access within a preset time range. The first terminal device and the second terminal device have different first characteristics, which can also be understood as the first terminal device and the second terminal device belonging to different device types. The first feature includes 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 receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, latency requirements, and processing capabilities. The number of resources can be RBs, REs, subcarriers, RB groups, REG bundles, control channel elements, subframes, radio frames, time slots, mini-time slots, and / or the number of symbols. For a detailed description of the first feature, please refer to [reference needed]. Figure 3 The relevant descriptions in step S301 will not be repeated here. Optionally, the first terminal device belongs to the first type of terminal device with reduced capabilities, and the second terminal device belongs to the conventional terminal device, wherein the capabilities of the conventional terminal device are superior to those of the first type of terminal device with reduced capabilities.

[0242]

[0243] In the example in Table 12, 1T1 and T2 represent two different preset 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 piece of first information, the high-order bit of the 2-bit field is the highest bit of the 5-bit field indicating the index value of the MCS, and the low-order bit of the 2-bit field is one bit of the 15 bits (17 bits) used for the operation of the spectrum access channel within a cell. When the high-order bit is 1, it indicates that the second terminal device cannot access the network device; when the high-order bit is 0, the second terminal device can access the network device. When the low-order bit is 1, the first terminal device is allowed to access the network device; when the low-order bit is 0, the first terminal device is not allowed to access the network device within the preset time range.

[0244] Example 5: In the 5-bit field indicating the MCS index value, when the highest bit is 1, it indicates that the corresponding DCI is a PDCCH dedicated to the type of terminal device corresponding to the first terminal device. In this case, the second terminal device cannot access the network device. At this time, the SI information indicated by this DCI, excluding SIB1, has a different type and / or content than the SI information of the second terminal device. When the highest bit is 0, the second terminal device can access the network device. Further optionally, at least one of the 23 status values ​​(01010 to 11111) in the 5-bit field indicating the MCS index value can be used to 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.

[0245] Specifically, when the highest bit of the 5-bit field indicating the MCS index value is 1, the second terminal device cannot access the network; when the highest bit of the 5-bit field indicating the MCS index value is 0, the second terminal device can access the network. Furthermore, any one or more of the second, third, fourth, and least significant bits (excluding the highest bit) can be used in conjunction with the highest bit (1) to indicate whether the network device allows the first terminal device to access the network, whether it allows the second terminal device to access the network, and / or whether it allows the first terminal device to access the network within a preset time range.

[0246]

[0247] In Table 13, T1 and T2 represent two different preset time ranges. N indicates that access is not allowed, and Y indicates that access is allowed. Since the highest bit of the 5-bit field indicating the MCS index value is 1 at this time, at least one piece of first information can be understood as simultaneously indicating that the network device does not allow the second terminal device to access. Alternatively, it can be understood that the highest bit (1 bit) and the lowest bit (2 bits) of the 5-bit field indicating the MCS index value jointly 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 is only an example of using four of the 16 state values ​​from 10000 to 11111 to 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; this application does not limit this.

[0248] Figure 5 The diagram shown is a flowchart illustrating an access information indication method provided in this application. This method can be executed by a terminal device and a network device, or it can be executed by a chip in the terminal device and a chip in the network device. Figure 5 The network devices in the above can be Figure 1 The access network device 10 in the middle, the terminal device can be the above-mentioned Figure 1 Terminal device 20 in the middle. Figure 5 The methods shown may include the following operations.

[0249] S500: The network device determines at least one piece of first information.

[0250] Specifically, at least one piece of first information is used to indicate whether the network device allows the first terminal device to access.

[0251] When multiple types of terminal devices exist within the cell to which the first terminal device belongs, the network device can configure first information to indicate whether one or more terminal device types are allowed to access. At least one piece of first information is included in SIB1. Optionally, at least one piece of first information is included in an N-bit field indicating the corresponding access identifiers in unified access control, where N is a positive integer. The N bits can be used to indicate whether the network device allows N terminal devices to access. Each of the N terminal devices has a different first characteristic, which can also be understood as the N terminal devices belonging to different device types. The first characteristic includes 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 receive antenna ports, the number of radio frequency channels, the number of HARQ processes, the supported peak rate, the application scenario, latency requirements, and processing capabilities. The number of resources can be RB, RE, subcarrier, RB group, REG bundle, control channel element, subframe, radio frame, time slot, mini-time slot, and / or the number of symbols. A detailed description of the first characteristic can be found in [reference needed]. Figure 3 The relevant descriptions in step S301 will not be repeated here.

[0252] S501: The network device sends at least one first message to the first terminal device, and correspondingly, the first terminal device receives at least one first message from the network device.

[0253] Specifically, the first terminal device receives at least one first piece of information and determines whether to access the network device.

[0254] Example 1: The N bits are 1 bit, and the 1 bit is used to indicate whether the network device allows the first terminal device to access.

[0255] Example 2: The N bits are 2 bits, used to indicate whether the network device allows the first terminal device and the second terminal device to access the network. The first terminal device and the second terminal device have different first characteristics. Furthermore, the first terminal device is a terminal device with a first type of reduced capability, and the second terminal device is a terminal device with a second type of reduced capability.

[0256] S502: Determine whether the network device allows the first terminal device to access.

[0257] Specifically, the first terminal device determines whether the network device allows the first terminal device to access the network based on at least one piece of first information.

[0258] It should be noted that the resources mentioned in this application may include time-domain and frequency-domain resources of the synchronization channel, a set of control resources, random access resources, PDSCH, and / or PDCCH. Specifically, when at least one piece of first information is contained in the MIB, the resources in this application may include time-domain and frequency-domain resources of the synchronization channel and / or a set of control resources; when at least one piece of first information is contained in the SIB, the resources in this application may include random access resources; when at least one piece of first information is contained in the downlink control information of scheduling SIB1, the resources in this embodiment may be SIB1, or the PDSCH corresponding to SIB1. When at least one piece of first information is contained in the MIB and the other piece of first information is contained in SIB1, the resources in this application may include random access resources; when at least one piece of first information is contained in the MIB and the other piece of first information is contained in the downlink control information of scheduling SIB1, the resources in this application may be SIB1, or the PDSCH corresponding to SIB1.

[0259] In the embodiments provided above, the methods provided by this application have been described from the perspectives of network devices, terminal devices, and the interaction between network devices and terminal devices. To implement the functions of the methods provided in the embodiments of this application, network devices and terminal devices may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0260] Figure 6 The diagram shown is a structural schematic of a possible communication device provided in this application. Figure 6 The communication device shown can realize the functions of the terminal device or network device in the above method, and therefore can also achieve the beneficial effects of the above method embodiments. In this application, the device can be... Figure 1 The network device 10 shown can also be a terminal device 20, or a module or unit of a terminal device or network device.

[0261] like Figure 6 As shown, the communication device 1000 includes a transceiver unit 1100 and a processing unit 1200. The communication device 1000 can be used to implement the above-mentioned... Figures 2 to 5 The methods illustrated in this embodiment demonstrate the functions of the terminal device or network device.

[0262] When the communication device 1000 is used to implement Figures 2 to 5When the network device in the illustrated embodiment functions, the transceiver unit 1100 is used to receive at least one first piece of information, such as steps S201, S301, S401, S501 and / or other processes using the techniques described herein. The processing unit 1200 is used to determine at least one piece of first information, such as S200, S300, S400, S500 and / or other processes using the techniques described herein.

[0263] When the communication device 1000 is used to implement Figures 2 to 5 When the terminal device in the illustrated embodiment functions, the transceiver unit 1100 is used to receive at least one first piece of information, such as steps S201, S301, S401, S501 and / or other processes using the techniques described herein. The processing unit 1200 is used to determine at least one piece of first information, such as S202, S302, S402, S502 and / or other processes using the techniques described herein.

[0264] In the embodiments of this application, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order. "At least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0265] Figure 7 This is a schematic diagram of the network device provided in the embodiments of this application, for example, a schematic diagram of a base station. The base station 2000 can be applied to, for example... Figure 1 In the system shown, the functions of the network device in the above method embodiment are executed. As shown in the figure, 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 (BBU) (also called distributed units (DU)) 2200. The RRU 2100 may be called a transceiver unit or a communication unit, and is connected to... Figure 6The transceiver unit 2100 corresponds to the transceiver unit 1100 in the diagram. Optionally, the transceiver unit 2100 can also be called a transceiver, transceiver circuit, or transceiver, etc., and it 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, where the receiving unit may correspond to a receiver (or receiver circuit), and the transmitting unit may correspond to a transmitter (or transmitter circuit). The RRU 2100 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals. The BBU 2200 is mainly used for baseband processing and controlling the base station. The RRU 2100 and BBU 2200 can be physically set together or physically separated, i.e., a distributed base station.

[0266] The BBU 2200 is the control center of the base station, also known as the processing unit, and can communicate with... Figure 6 The processing unit 1200 is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spreading, etc. For example, the BBU (processing unit) can be used to control the base station to execute the operation procedures of the network equipment in the above method embodiments.

[0267] In one example, the BBU 2200 can be composed of one or more single boards. Multiple single boards can collectively support a single access standard wireless access network (such as an LTE network), or they can each support different access standard wireless access networks (such as LTE, 5G, or other networks). The BBU 2200 also includes a memory 2201 and a processor 2202. The memory 2201 is used to store necessary instructions and data. The processor 2202 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation procedures related to the network device in the above method embodiments. The memory 2201 and processor 2202 can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. Furthermore, each single board can also have necessary circuitry.

[0268] It should be understood that Figure 7 The base station 2000 shown can implement the various processes of the network device involved in the foregoing method embodiments. The operation or function of each module in the base station 2000 is to implement the corresponding process in the above method embodiments. For details, please refer to the description in the above method embodiments, which will not be repeated here.

[0269] The BBU 2200 described above can be used to perform the actions implemented internally by the network device as described in the preceding method embodiments, while the RRU 2100 can be used to perform the actions described in the preceding method embodiments whereby the network device sends data to or receives data from the terminal device. Please refer to the descriptions in the preceding method embodiments for details, which will not be repeated here.

[0270] Figure 8 This is a schematic diagram of the structure of a terminal device 3000 provided in an embodiment of this application. As shown in the figure, the terminal device 3000 includes a processor 3001 and a transceiver 3002. Optionally, the terminal device 3000 may also include a memory 3003. The processor 3001, transceiver 3002, and memory 3003 can communicate with each other through internal connection paths to transmit control and / or data signals. The memory 3003 is used to store computer programs, and the processor 3001 is used to call and run the computer program from the memory 3003 to control the transceiver 3002 to transmit and receive signals.

[0271] The processor 3001 and memory 3003 described above can be combined into a processing device 3004, whereby the processor 3001 executes the program code stored in the memory 3003 to achieve the aforementioned functions. It should be understood that... Figure 8 The processing device 3004 shown is merely an example. In a specific implementation, the memory 3003 may also be integrated into the processor 3001 or independent of the processor 3001. This application does not limit this.

[0272] The aforementioned terminal device 3000 may also include an antenna 3010 for transmitting uplink data or uplink control signaling output by the transceiver 3002 via a wireless signal.

[0273] It should be understood that Figure 8 The terminal device 3000 shown can implement the various processes involved in the terminal device in the foregoing method embodiments. The operation or function of each module in the terminal device 3000 is to implement the corresponding process in the above method embodiments. For details, please refer to the description in the above method embodiments, which will not be repeated here.

[0274] Optionally, the terminal device 3000 may also include a power supply 3005 for providing power to various devices or circuits in the terminal device.

[0275] In addition, to make the terminal device more functional, the terminal device 3000 may also include one or more of the following: an input unit 3006, a display unit 3007, an audio circuit 3008, a camera 3009, and a sensor 30083. The audio circuit may also include a speaker 30081, a microphone 30082, etc.

[0276] It should be understood that the processing device can be a chip. For example, the processing device can be a field-programmable gate array (FPGA), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, a system on-chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0277] This invention also provides a communication system comprising at least one access network device and at least one communication apparatus that perform the above embodiments of this invention.

[0278] Optionally, this application provides a chip system for supporting the implementation of the access method provided in this application, for example, Figures 2 to 5The access method is illustrated. The chip system includes at least one processor and an interface circuit. The interface circuit provides input or output of instructions and / or data to the at least one processor. When the at least one processor executes the aforementioned instructions, the chip system implements the functions of the network device or terminal device in the access method provided in this application. In one possible design, the chip system also includes a memory. The memory is used to store necessary program instructions and data for the network device. Of course, the memory may not be included in the chip system. The chip system may be composed of chips or may contain chips and other discrete devices; this application does not specifically limit this aspect.

[0279] like Figure 9 The image shows an example of a chip system provided in this application. The chip system 900 includes a processor 901 and an interface circuit 902. Optionally, the processor 901 and the interface circuit 902 can be connected via a bus 903.

[0280] It should be understood that the terms "an embodiment," "an embodiment," or "an embodiment of the invention" used throughout the specification mean that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, the phrases "in an embodiment," "in one embodiment," or "an embodiment of the invention" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0281] In various embodiments of the present invention, it should be understood that the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0282] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.

[0283] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An access method, characterized by, The method includes: The system receives a system message block (SIB), the SIB including at least one first piece of information, the at least one first piece of information being used to indicate a first access capability and a first access permission, the first access capability indicating whether access by a first terminal device is supported, and the first access permission indicating whether access by the first terminal device is permitted; the first terminal device is a terminal device with a first type of reduced capability.

2. The method of claim 1, wherein, The at least one first piece of information comprises one or more bits, and the different bit state values ​​of the at least one first piece of information indicate the following: Access by the first terminal device is not supported; The first terminal device is not allowed to access; The first terminal device is allowed to access the system, and the first terminal device receives information based on the first resource. The first terminal device is allowed to access the system, and the first terminal device receives information based on the second resource. The first resource and the second resource are different sets of control resources, random access resources, or synchronization information resources.

3. The method of claim 2, wherein, At least one bit status value of the at least one first information indicates one or more of the following: time-domain location information or frequency-domain location information, code-domain location information, resource index, time-domain resource offset, frequency-domain resource offset, code-domain resource offset, power configuration, or beam resource of the first resource or the second resource.

4. The method of claim 2 or 3, wherein, The resource information of the first resource and the second resource are different, and the resource information is at least one of the following: time domain location information, frequency domain location information, code domain location information, resource index, power configuration, beam resource, time domain resource offset value, frequency domain resource offset value or code domain resource offset value.

5. The method according to any one of claims 1 to 4, characterized in that, The first terminal device has one radio frequency channel; or, the first terminal device has one transmit antenna port; or, the first terminal device has two radio frequency channels; or, the first terminal device has two transmit antenna ports.

6. The method according to any one of claims 1 to 4, characterized in that, The communication frequency of the first terminal device and the network device is in the frequency range 1.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: determining whether the access of the first terminal device is supported and determining whether the access of the first terminal device is allowed based on the at least one first piece of information.

8. The method according to any one of claims 1 to 7, characterized in that, The at least one first piece of information comprises one or more bits, and the different bit state values ​​of the at least one first piece of information indicate the following: Access from the second terminal device is not supported. The second terminal device is not allowed to access; The second terminal device is allowed to access the system, and the second terminal device receives information based on the first resource. The second terminal device is allowed to access the system, and the second terminal device receives information based on the second resource. The first resource and the second resource are different sets of control resources, random access resources, or synchronization information resources. The second terminal device is a terminal device with reduced capabilities of the second type. The first terminal device has 1 radio frequency channel and the second terminal device has 2 radio frequency channels; or the first terminal device has 1 transmit antenna port and the second terminal device has 2 transmit antenna ports.

9. An access method, characterized in that, The method includes: A System Information Block (SIB) is sent, the SIB including at least one first piece of information, the at least one first piece of information being used to indicate a first access capability and a first access permission, the first access capability indicating whether access by a first terminal device is supported, and the first access permission indicating whether access by the first terminal device is permitted; the first terminal device is a terminal device with a first type of reduced capability.

10. The method as described in claim 9, characterized in that, The at least one first piece of information comprises one or more bits, and the different bit state values ​​of the at least one first piece of information indicate the following: Access by the first terminal device is not supported; The first terminal device is not allowed to access; The first terminal device is allowed to access the system, and the first terminal device receives information based on the first resource. The first terminal device is allowed to access the system, and the first terminal device receives information based on the second resource. The first resource and the second resource are different sets of control resources, random access resources, or synchronization information resources.

11. The method as described in claim 10, characterized in that, At least one bit status value of the at least one first information indicates one or more of the following: 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 configuration, and beam resource of the first resource or the second resource.

12. The method as described in claim 10 or 11, characterized in that, The resource information of the first resource and the second resource are different, and the resource information is at least one of the following: time domain location information, frequency domain location information, code domain location information, resource index, power configuration, beam resource, time domain resource offset value, frequency domain resource offset value or code domain resource offset value.

13. The method according to any one of claims 9 to 12, characterized in that, The first terminal device has one radio frequency channel; or, the first terminal device has one transmit antenna port; or, the first terminal device has two radio frequency channels; or, the first terminal device has two transmit antenna ports.

14. The method according to any one of claims 9 to 13, characterized in that, The communication frequency of the first terminal device and the network device is in the frequency range 1.

15. The method according to any one of claims 9 to 14, characterized in that, The at least one first piece of information comprises one or more bits, and the different bit state values ​​of the at least one first piece of information indicate the following: Access from the second terminal device is not supported. The second terminal device is not allowed to access; The second terminal device is allowed to access the system, and the second terminal device receives information based on the first resource. The second terminal device is allowed to access the system, and the second terminal device receives information based on the second resource. The first resource and the second resource are different sets of control resources, random access resources, or synchronization information resources. The second terminal device is a terminal device with reduced capabilities of the second type. The first terminal device has 1 radio frequency channel and the second terminal device has 2 radio frequency channels; or the first terminal device has 1 transmit antenna port and the second terminal device has 2 transmit antenna ports.

16. A communication device, characterized in that, The device includes at least one processor and an interface circuit, the interface circuit being used to provide input or output of instructions and / or data to the at least one processor, wherein when the at least one processor executes the instructions, the device causes the device to implement the method as described in any one of claims 1 to 8.

17. A communication device, characterized in that, The device includes at least one processor and an interface circuit, the interface circuit being used to provide input or output of instructions and / or data to the at least one processor, wherein when the at least one processor executes the instructions, the device causes the device to perform the method as described in any one of claims 9 to 15.

18. A computer-readable storage medium, characterized in that, Includes a program or instructions that, when run on a computer, execute the method as described in any one of claims 1 to 8, or execute the method as described in any one of claims 9 to 15.

19. A computer program product, the computer program product comprising: Computer program code, when executed, causes the method described in any one of claims 1 to 8 to be performed, or causes the method described in any one of claims 9 to 15 to be performed.

20. A chip system comprising a processor configured to implement the method of any one of claims 1 to 8, or the processor configured to implement the method of any one of claims 9 to 15.

21. A communication system comprising at least one communication device as claimed in claim 16 and at least one communication device as claimed in claim 17.

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